1 /* 2 * Linux syscalls 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 #define _ATFILE_SOURCE 20 #include "qemu/osdep.h" 21 #include "qemu/cutils.h" 22 #include "qemu/path.h" 23 #include <elf.h> 24 #include <endian.h> 25 #include <grp.h> 26 #include <sys/ipc.h> 27 #include <sys/msg.h> 28 #include <sys/wait.h> 29 #include <sys/mount.h> 30 #include <sys/file.h> 31 #include <sys/fsuid.h> 32 #include <sys/personality.h> 33 #include <sys/prctl.h> 34 #include <sys/resource.h> 35 #include <sys/swap.h> 36 #include <linux/capability.h> 37 #include <sched.h> 38 #include <sys/timex.h> 39 #ifdef __ia64__ 40 int __clone2(int (*fn)(void *), void *child_stack_base, 41 size_t stack_size, int flags, void *arg, ...); 42 #endif 43 #include <sys/socket.h> 44 #include <sys/un.h> 45 #include <sys/uio.h> 46 #include <poll.h> 47 #include <sys/times.h> 48 #include <sys/shm.h> 49 #include <sys/sem.h> 50 #include <sys/statfs.h> 51 #include <time.h> 52 #include <utime.h> 53 #include <sys/sysinfo.h> 54 #include <sys/signalfd.h> 55 //#include <sys/user.h> 56 #include <netinet/ip.h> 57 #include <netinet/tcp.h> 58 #include <linux/wireless.h> 59 #include <linux/icmp.h> 60 #include <linux/icmpv6.h> 61 #include <linux/errqueue.h> 62 #include "qemu-common.h" 63 #ifdef CONFIG_TIMERFD 64 #include <sys/timerfd.h> 65 #endif 66 #ifdef TARGET_GPROF 67 #include <sys/gmon.h> 68 #endif 69 #ifdef CONFIG_EVENTFD 70 #include <sys/eventfd.h> 71 #endif 72 #ifdef CONFIG_EPOLL 73 #include <sys/epoll.h> 74 #endif 75 #ifdef CONFIG_ATTR 76 #include "qemu/xattr.h" 77 #endif 78 #ifdef CONFIG_SENDFILE 79 #include <sys/sendfile.h> 80 #endif 81 82 #define termios host_termios 83 #define winsize host_winsize 84 #define termio host_termio 85 #define sgttyb host_sgttyb /* same as target */ 86 #define tchars host_tchars /* same as target */ 87 #define ltchars host_ltchars /* same as target */ 88 89 #include <linux/termios.h> 90 #include <linux/unistd.h> 91 #include <linux/cdrom.h> 92 #include <linux/hdreg.h> 93 #include <linux/soundcard.h> 94 #include <linux/kd.h> 95 #include <linux/mtio.h> 96 #include <linux/fs.h> 97 #if defined(CONFIG_FIEMAP) 98 #include <linux/fiemap.h> 99 #endif 100 #include <linux/fb.h> 101 #include <linux/vt.h> 102 #include <linux/dm-ioctl.h> 103 #include <linux/reboot.h> 104 #include <linux/route.h> 105 #include <linux/filter.h> 106 #include <linux/blkpg.h> 107 #include <netpacket/packet.h> 108 #include <linux/netlink.h> 109 #ifdef CONFIG_RTNETLINK 110 #include <linux/rtnetlink.h> 111 #include <linux/if_bridge.h> 112 #endif 113 #include <linux/audit.h> 114 #include "linux_loop.h" 115 #include "uname.h" 116 117 #include "qemu.h" 118 119 #ifndef CLONE_IO 120 #define CLONE_IO 0x80000000 /* Clone io context */ 121 #endif 122 123 /* We can't directly call the host clone syscall, because this will 124 * badly confuse libc (breaking mutexes, for example). So we must 125 * divide clone flags into: 126 * * flag combinations that look like pthread_create() 127 * * flag combinations that look like fork() 128 * * flags we can implement within QEMU itself 129 * * flags we can't support and will return an error for 130 */ 131 /* For thread creation, all these flags must be present; for 132 * fork, none must be present. 133 */ 134 #define CLONE_THREAD_FLAGS \ 135 (CLONE_VM | CLONE_FS | CLONE_FILES | \ 136 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM) 137 138 /* These flags are ignored: 139 * CLONE_DETACHED is now ignored by the kernel; 140 * CLONE_IO is just an optimisation hint to the I/O scheduler 141 */ 142 #define CLONE_IGNORED_FLAGS \ 143 (CLONE_DETACHED | CLONE_IO) 144 145 /* Flags for fork which we can implement within QEMU itself */ 146 #define CLONE_OPTIONAL_FORK_FLAGS \ 147 (CLONE_SETTLS | CLONE_PARENT_SETTID | \ 148 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID) 149 150 /* Flags for thread creation which we can implement within QEMU itself */ 151 #define CLONE_OPTIONAL_THREAD_FLAGS \ 152 (CLONE_SETTLS | CLONE_PARENT_SETTID | \ 153 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT) 154 155 #define CLONE_INVALID_FORK_FLAGS \ 156 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS)) 157 158 #define CLONE_INVALID_THREAD_FLAGS \ 159 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \ 160 CLONE_IGNORED_FLAGS)) 161 162 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits 163 * have almost all been allocated. We cannot support any of 164 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC, 165 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED. 166 * The checks against the invalid thread masks above will catch these. 167 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.) 168 */ 169 170 //#define DEBUG 171 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted 172 * once. This exercises the codepaths for restart. 173 */ 174 //#define DEBUG_ERESTARTSYS 175 176 //#include <linux/msdos_fs.h> 177 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2]) 178 #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2]) 179 180 #undef _syscall0 181 #undef _syscall1 182 #undef _syscall2 183 #undef _syscall3 184 #undef _syscall4 185 #undef _syscall5 186 #undef _syscall6 187 188 #define _syscall0(type,name) \ 189 static type name (void) \ 190 { \ 191 return syscall(__NR_##name); \ 192 } 193 194 #define _syscall1(type,name,type1,arg1) \ 195 static type name (type1 arg1) \ 196 { \ 197 return syscall(__NR_##name, arg1); \ 198 } 199 200 #define _syscall2(type,name,type1,arg1,type2,arg2) \ 201 static type name (type1 arg1,type2 arg2) \ 202 { \ 203 return syscall(__NR_##name, arg1, arg2); \ 204 } 205 206 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ 207 static type name (type1 arg1,type2 arg2,type3 arg3) \ 208 { \ 209 return syscall(__NR_##name, arg1, arg2, arg3); \ 210 } 211 212 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ 213 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \ 214 { \ 215 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 216 } 217 218 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 219 type5,arg5) \ 220 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ 221 { \ 222 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 223 } 224 225 226 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ 227 type5,arg5,type6,arg6) \ 228 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \ 229 type6 arg6) \ 230 { \ 231 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 232 } 233 234 235 #define __NR_sys_uname __NR_uname 236 #define __NR_sys_getcwd1 __NR_getcwd 237 #define __NR_sys_getdents __NR_getdents 238 #define __NR_sys_getdents64 __NR_getdents64 239 #define __NR_sys_getpriority __NR_getpriority 240 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo 241 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo 242 #define __NR_sys_syslog __NR_syslog 243 #define __NR_sys_futex __NR_futex 244 #define __NR_sys_inotify_init __NR_inotify_init 245 #define __NR_sys_inotify_add_watch __NR_inotify_add_watch 246 #define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch 247 248 #if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__) || \ 249 defined(__s390x__) 250 #define __NR__llseek __NR_lseek 251 #endif 252 253 /* Newer kernel ports have llseek() instead of _llseek() */ 254 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek) 255 #define TARGET_NR__llseek TARGET_NR_llseek 256 #endif 257 258 #ifdef __NR_gettid 259 _syscall0(int, gettid) 260 #else 261 /* This is a replacement for the host gettid() and must return a host 262 errno. */ 263 static int gettid(void) { 264 return -ENOSYS; 265 } 266 #endif 267 #if defined(TARGET_NR_getdents) && defined(__NR_getdents) 268 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count); 269 #endif 270 #if !defined(__NR_getdents) || \ 271 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64)) 272 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count); 273 #endif 274 #if defined(TARGET_NR__llseek) && defined(__NR_llseek) 275 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, 276 loff_t *, res, uint, wh); 277 #endif 278 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo) 279 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig, 280 siginfo_t *, uinfo) 281 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len) 282 #ifdef __NR_exit_group 283 _syscall1(int,exit_group,int,error_code) 284 #endif 285 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) 286 _syscall1(int,set_tid_address,int *,tidptr) 287 #endif 288 #if defined(TARGET_NR_futex) && defined(__NR_futex) 289 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val, 290 const struct timespec *,timeout,int *,uaddr2,int,val3) 291 #endif 292 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity 293 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len, 294 unsigned long *, user_mask_ptr); 295 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity 296 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len, 297 unsigned long *, user_mask_ptr); 298 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd, 299 void *, arg); 300 _syscall2(int, capget, struct __user_cap_header_struct *, header, 301 struct __user_cap_data_struct *, data); 302 _syscall2(int, capset, struct __user_cap_header_struct *, header, 303 struct __user_cap_data_struct *, data); 304 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 305 _syscall2(int, ioprio_get, int, which, int, who) 306 #endif 307 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 308 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio) 309 #endif 310 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 311 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags) 312 #endif 313 314 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 315 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type, 316 unsigned long, idx1, unsigned long, idx2) 317 #endif 318 319 static bitmask_transtbl fcntl_flags_tbl[] = { 320 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, }, 321 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, }, 322 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, }, 323 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, }, 324 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, }, 325 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, }, 326 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, }, 327 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, }, 328 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, }, 329 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, }, 330 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, }, 331 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, }, 332 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, }, 333 #if defined(O_DIRECT) 334 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, }, 335 #endif 336 #if defined(O_NOATIME) 337 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME }, 338 #endif 339 #if defined(O_CLOEXEC) 340 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC }, 341 #endif 342 #if defined(O_PATH) 343 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH }, 344 #endif 345 /* Don't terminate the list prematurely on 64-bit host+guest. */ 346 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0 347 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, }, 348 #endif 349 { 0, 0, 0, 0 } 350 }; 351 352 enum { 353 QEMU_IFLA_BR_UNSPEC, 354 QEMU_IFLA_BR_FORWARD_DELAY, 355 QEMU_IFLA_BR_HELLO_TIME, 356 QEMU_IFLA_BR_MAX_AGE, 357 QEMU_IFLA_BR_AGEING_TIME, 358 QEMU_IFLA_BR_STP_STATE, 359 QEMU_IFLA_BR_PRIORITY, 360 QEMU_IFLA_BR_VLAN_FILTERING, 361 QEMU_IFLA_BR_VLAN_PROTOCOL, 362 QEMU_IFLA_BR_GROUP_FWD_MASK, 363 QEMU_IFLA_BR_ROOT_ID, 364 QEMU_IFLA_BR_BRIDGE_ID, 365 QEMU_IFLA_BR_ROOT_PORT, 366 QEMU_IFLA_BR_ROOT_PATH_COST, 367 QEMU_IFLA_BR_TOPOLOGY_CHANGE, 368 QEMU_IFLA_BR_TOPOLOGY_CHANGE_DETECTED, 369 QEMU_IFLA_BR_HELLO_TIMER, 370 QEMU_IFLA_BR_TCN_TIMER, 371 QEMU_IFLA_BR_TOPOLOGY_CHANGE_TIMER, 372 QEMU_IFLA_BR_GC_TIMER, 373 QEMU_IFLA_BR_GROUP_ADDR, 374 QEMU_IFLA_BR_FDB_FLUSH, 375 QEMU_IFLA_BR_MCAST_ROUTER, 376 QEMU_IFLA_BR_MCAST_SNOOPING, 377 QEMU_IFLA_BR_MCAST_QUERY_USE_IFADDR, 378 QEMU_IFLA_BR_MCAST_QUERIER, 379 QEMU_IFLA_BR_MCAST_HASH_ELASTICITY, 380 QEMU_IFLA_BR_MCAST_HASH_MAX, 381 QEMU_IFLA_BR_MCAST_LAST_MEMBER_CNT, 382 QEMU_IFLA_BR_MCAST_STARTUP_QUERY_CNT, 383 QEMU_IFLA_BR_MCAST_LAST_MEMBER_INTVL, 384 QEMU_IFLA_BR_MCAST_MEMBERSHIP_INTVL, 385 QEMU_IFLA_BR_MCAST_QUERIER_INTVL, 386 QEMU_IFLA_BR_MCAST_QUERY_INTVL, 387 QEMU_IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, 388 QEMU_IFLA_BR_MCAST_STARTUP_QUERY_INTVL, 389 QEMU_IFLA_BR_NF_CALL_IPTABLES, 390 QEMU_IFLA_BR_NF_CALL_IP6TABLES, 391 QEMU_IFLA_BR_NF_CALL_ARPTABLES, 392 QEMU_IFLA_BR_VLAN_DEFAULT_PVID, 393 QEMU_IFLA_BR_PAD, 394 QEMU_IFLA_BR_VLAN_STATS_ENABLED, 395 QEMU_IFLA_BR_MCAST_STATS_ENABLED, 396 QEMU___IFLA_BR_MAX, 397 }; 398 399 enum { 400 QEMU_IFLA_UNSPEC, 401 QEMU_IFLA_ADDRESS, 402 QEMU_IFLA_BROADCAST, 403 QEMU_IFLA_IFNAME, 404 QEMU_IFLA_MTU, 405 QEMU_IFLA_LINK, 406 QEMU_IFLA_QDISC, 407 QEMU_IFLA_STATS, 408 QEMU_IFLA_COST, 409 QEMU_IFLA_PRIORITY, 410 QEMU_IFLA_MASTER, 411 QEMU_IFLA_WIRELESS, 412 QEMU_IFLA_PROTINFO, 413 QEMU_IFLA_TXQLEN, 414 QEMU_IFLA_MAP, 415 QEMU_IFLA_WEIGHT, 416 QEMU_IFLA_OPERSTATE, 417 QEMU_IFLA_LINKMODE, 418 QEMU_IFLA_LINKINFO, 419 QEMU_IFLA_NET_NS_PID, 420 QEMU_IFLA_IFALIAS, 421 QEMU_IFLA_NUM_VF, 422 QEMU_IFLA_VFINFO_LIST, 423 QEMU_IFLA_STATS64, 424 QEMU_IFLA_VF_PORTS, 425 QEMU_IFLA_PORT_SELF, 426 QEMU_IFLA_AF_SPEC, 427 QEMU_IFLA_GROUP, 428 QEMU_IFLA_NET_NS_FD, 429 QEMU_IFLA_EXT_MASK, 430 QEMU_IFLA_PROMISCUITY, 431 QEMU_IFLA_NUM_TX_QUEUES, 432 QEMU_IFLA_NUM_RX_QUEUES, 433 QEMU_IFLA_CARRIER, 434 QEMU_IFLA_PHYS_PORT_ID, 435 QEMU_IFLA_CARRIER_CHANGES, 436 QEMU_IFLA_PHYS_SWITCH_ID, 437 QEMU_IFLA_LINK_NETNSID, 438 QEMU_IFLA_PHYS_PORT_NAME, 439 QEMU_IFLA_PROTO_DOWN, 440 QEMU_IFLA_GSO_MAX_SEGS, 441 QEMU_IFLA_GSO_MAX_SIZE, 442 QEMU_IFLA_PAD, 443 QEMU_IFLA_XDP, 444 QEMU___IFLA_MAX 445 }; 446 447 enum { 448 QEMU_IFLA_BRPORT_UNSPEC, 449 QEMU_IFLA_BRPORT_STATE, 450 QEMU_IFLA_BRPORT_PRIORITY, 451 QEMU_IFLA_BRPORT_COST, 452 QEMU_IFLA_BRPORT_MODE, 453 QEMU_IFLA_BRPORT_GUARD, 454 QEMU_IFLA_BRPORT_PROTECT, 455 QEMU_IFLA_BRPORT_FAST_LEAVE, 456 QEMU_IFLA_BRPORT_LEARNING, 457 QEMU_IFLA_BRPORT_UNICAST_FLOOD, 458 QEMU_IFLA_BRPORT_PROXYARP, 459 QEMU_IFLA_BRPORT_LEARNING_SYNC, 460 QEMU_IFLA_BRPORT_PROXYARP_WIFI, 461 QEMU_IFLA_BRPORT_ROOT_ID, 462 QEMU_IFLA_BRPORT_BRIDGE_ID, 463 QEMU_IFLA_BRPORT_DESIGNATED_PORT, 464 QEMU_IFLA_BRPORT_DESIGNATED_COST, 465 QEMU_IFLA_BRPORT_ID, 466 QEMU_IFLA_BRPORT_NO, 467 QEMU_IFLA_BRPORT_TOPOLOGY_CHANGE_ACK, 468 QEMU_IFLA_BRPORT_CONFIG_PENDING, 469 QEMU_IFLA_BRPORT_MESSAGE_AGE_TIMER, 470 QEMU_IFLA_BRPORT_FORWARD_DELAY_TIMER, 471 QEMU_IFLA_BRPORT_HOLD_TIMER, 472 QEMU_IFLA_BRPORT_FLUSH, 473 QEMU_IFLA_BRPORT_MULTICAST_ROUTER, 474 QEMU_IFLA_BRPORT_PAD, 475 QEMU___IFLA_BRPORT_MAX 476 }; 477 478 enum { 479 QEMU_IFLA_INFO_UNSPEC, 480 QEMU_IFLA_INFO_KIND, 481 QEMU_IFLA_INFO_DATA, 482 QEMU_IFLA_INFO_XSTATS, 483 QEMU_IFLA_INFO_SLAVE_KIND, 484 QEMU_IFLA_INFO_SLAVE_DATA, 485 QEMU___IFLA_INFO_MAX, 486 }; 487 488 enum { 489 QEMU_IFLA_INET_UNSPEC, 490 QEMU_IFLA_INET_CONF, 491 QEMU___IFLA_INET_MAX, 492 }; 493 494 enum { 495 QEMU_IFLA_INET6_UNSPEC, 496 QEMU_IFLA_INET6_FLAGS, 497 QEMU_IFLA_INET6_CONF, 498 QEMU_IFLA_INET6_STATS, 499 QEMU_IFLA_INET6_MCAST, 500 QEMU_IFLA_INET6_CACHEINFO, 501 QEMU_IFLA_INET6_ICMP6STATS, 502 QEMU_IFLA_INET6_TOKEN, 503 QEMU_IFLA_INET6_ADDR_GEN_MODE, 504 QEMU___IFLA_INET6_MAX 505 }; 506 507 typedef abi_long (*TargetFdDataFunc)(void *, size_t); 508 typedef abi_long (*TargetFdAddrFunc)(void *, abi_ulong, socklen_t); 509 typedef struct TargetFdTrans { 510 TargetFdDataFunc host_to_target_data; 511 TargetFdDataFunc target_to_host_data; 512 TargetFdAddrFunc target_to_host_addr; 513 } TargetFdTrans; 514 515 static TargetFdTrans **target_fd_trans; 516 517 static unsigned int target_fd_max; 518 519 static TargetFdDataFunc fd_trans_target_to_host_data(int fd) 520 { 521 if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) { 522 return target_fd_trans[fd]->target_to_host_data; 523 } 524 return NULL; 525 } 526 527 static TargetFdDataFunc fd_trans_host_to_target_data(int fd) 528 { 529 if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) { 530 return target_fd_trans[fd]->host_to_target_data; 531 } 532 return NULL; 533 } 534 535 static TargetFdAddrFunc fd_trans_target_to_host_addr(int fd) 536 { 537 if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) { 538 return target_fd_trans[fd]->target_to_host_addr; 539 } 540 return NULL; 541 } 542 543 static void fd_trans_register(int fd, TargetFdTrans *trans) 544 { 545 unsigned int oldmax; 546 547 if (fd >= target_fd_max) { 548 oldmax = target_fd_max; 549 target_fd_max = ((fd >> 6) + 1) << 6; /* by slice of 64 entries */ 550 target_fd_trans = g_renew(TargetFdTrans *, 551 target_fd_trans, target_fd_max); 552 memset((void *)(target_fd_trans + oldmax), 0, 553 (target_fd_max - oldmax) * sizeof(TargetFdTrans *)); 554 } 555 target_fd_trans[fd] = trans; 556 } 557 558 static void fd_trans_unregister(int fd) 559 { 560 if (fd >= 0 && fd < target_fd_max) { 561 target_fd_trans[fd] = NULL; 562 } 563 } 564 565 static void fd_trans_dup(int oldfd, int newfd) 566 { 567 fd_trans_unregister(newfd); 568 if (oldfd < target_fd_max && target_fd_trans[oldfd]) { 569 fd_trans_register(newfd, target_fd_trans[oldfd]); 570 } 571 } 572 573 static int sys_getcwd1(char *buf, size_t size) 574 { 575 if (getcwd(buf, size) == NULL) { 576 /* getcwd() sets errno */ 577 return (-1); 578 } 579 return strlen(buf)+1; 580 } 581 582 #ifdef TARGET_NR_utimensat 583 #if defined(__NR_utimensat) 584 #define __NR_sys_utimensat __NR_utimensat 585 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname, 586 const struct timespec *,tsp,int,flags) 587 #else 588 static int sys_utimensat(int dirfd, const char *pathname, 589 const struct timespec times[2], int flags) 590 { 591 errno = ENOSYS; 592 return -1; 593 } 594 #endif 595 #endif /* TARGET_NR_utimensat */ 596 597 #ifdef CONFIG_INOTIFY 598 #include <sys/inotify.h> 599 600 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) 601 static int sys_inotify_init(void) 602 { 603 return (inotify_init()); 604 } 605 #endif 606 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) 607 static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask) 608 { 609 return (inotify_add_watch(fd, pathname, mask)); 610 } 611 #endif 612 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) 613 static int sys_inotify_rm_watch(int fd, int32_t wd) 614 { 615 return (inotify_rm_watch(fd, wd)); 616 } 617 #endif 618 #ifdef CONFIG_INOTIFY1 619 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1) 620 static int sys_inotify_init1(int flags) 621 { 622 return (inotify_init1(flags)); 623 } 624 #endif 625 #endif 626 #else 627 /* Userspace can usually survive runtime without inotify */ 628 #undef TARGET_NR_inotify_init 629 #undef TARGET_NR_inotify_init1 630 #undef TARGET_NR_inotify_add_watch 631 #undef TARGET_NR_inotify_rm_watch 632 #endif /* CONFIG_INOTIFY */ 633 634 #if defined(TARGET_NR_prlimit64) 635 #ifndef __NR_prlimit64 636 # define __NR_prlimit64 -1 637 #endif 638 #define __NR_sys_prlimit64 __NR_prlimit64 639 /* The glibc rlimit structure may not be that used by the underlying syscall */ 640 struct host_rlimit64 { 641 uint64_t rlim_cur; 642 uint64_t rlim_max; 643 }; 644 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource, 645 const struct host_rlimit64 *, new_limit, 646 struct host_rlimit64 *, old_limit) 647 #endif 648 649 650 #if defined(TARGET_NR_timer_create) 651 /* Maxiumum of 32 active POSIX timers allowed at any one time. */ 652 static timer_t g_posix_timers[32] = { 0, } ; 653 654 static inline int next_free_host_timer(void) 655 { 656 int k ; 657 /* FIXME: Does finding the next free slot require a lock? */ 658 for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) { 659 if (g_posix_timers[k] == 0) { 660 g_posix_timers[k] = (timer_t) 1; 661 return k; 662 } 663 } 664 return -1; 665 } 666 #endif 667 668 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */ 669 #ifdef TARGET_ARM 670 static inline int regpairs_aligned(void *cpu_env) { 671 return ((((CPUARMState *)cpu_env)->eabi) == 1) ; 672 } 673 #elif defined(TARGET_MIPS) && (TARGET_ABI_BITS == 32) 674 static inline int regpairs_aligned(void *cpu_env) { return 1; } 675 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64) 676 /* SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs 677 * of registers which translates to the same as ARM/MIPS, because we start with 678 * r3 as arg1 */ 679 static inline int regpairs_aligned(void *cpu_env) { return 1; } 680 #else 681 static inline int regpairs_aligned(void *cpu_env) { return 0; } 682 #endif 683 684 #define ERRNO_TABLE_SIZE 1200 685 686 /* target_to_host_errno_table[] is initialized from 687 * host_to_target_errno_table[] in syscall_init(). */ 688 static uint16_t target_to_host_errno_table[ERRNO_TABLE_SIZE] = { 689 }; 690 691 /* 692 * This list is the union of errno values overridden in asm-<arch>/errno.h 693 * minus the errnos that are not actually generic to all archs. 694 */ 695 static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = { 696 [EAGAIN] = TARGET_EAGAIN, 697 [EIDRM] = TARGET_EIDRM, 698 [ECHRNG] = TARGET_ECHRNG, 699 [EL2NSYNC] = TARGET_EL2NSYNC, 700 [EL3HLT] = TARGET_EL3HLT, 701 [EL3RST] = TARGET_EL3RST, 702 [ELNRNG] = TARGET_ELNRNG, 703 [EUNATCH] = TARGET_EUNATCH, 704 [ENOCSI] = TARGET_ENOCSI, 705 [EL2HLT] = TARGET_EL2HLT, 706 [EDEADLK] = TARGET_EDEADLK, 707 [ENOLCK] = TARGET_ENOLCK, 708 [EBADE] = TARGET_EBADE, 709 [EBADR] = TARGET_EBADR, 710 [EXFULL] = TARGET_EXFULL, 711 [ENOANO] = TARGET_ENOANO, 712 [EBADRQC] = TARGET_EBADRQC, 713 [EBADSLT] = TARGET_EBADSLT, 714 [EBFONT] = TARGET_EBFONT, 715 [ENOSTR] = TARGET_ENOSTR, 716 [ENODATA] = TARGET_ENODATA, 717 [ETIME] = TARGET_ETIME, 718 [ENOSR] = TARGET_ENOSR, 719 [ENONET] = TARGET_ENONET, 720 [ENOPKG] = TARGET_ENOPKG, 721 [EREMOTE] = TARGET_EREMOTE, 722 [ENOLINK] = TARGET_ENOLINK, 723 [EADV] = TARGET_EADV, 724 [ESRMNT] = TARGET_ESRMNT, 725 [ECOMM] = TARGET_ECOMM, 726 [EPROTO] = TARGET_EPROTO, 727 [EDOTDOT] = TARGET_EDOTDOT, 728 [EMULTIHOP] = TARGET_EMULTIHOP, 729 [EBADMSG] = TARGET_EBADMSG, 730 [ENAMETOOLONG] = TARGET_ENAMETOOLONG, 731 [EOVERFLOW] = TARGET_EOVERFLOW, 732 [ENOTUNIQ] = TARGET_ENOTUNIQ, 733 [EBADFD] = TARGET_EBADFD, 734 [EREMCHG] = TARGET_EREMCHG, 735 [ELIBACC] = TARGET_ELIBACC, 736 [ELIBBAD] = TARGET_ELIBBAD, 737 [ELIBSCN] = TARGET_ELIBSCN, 738 [ELIBMAX] = TARGET_ELIBMAX, 739 [ELIBEXEC] = TARGET_ELIBEXEC, 740 [EILSEQ] = TARGET_EILSEQ, 741 [ENOSYS] = TARGET_ENOSYS, 742 [ELOOP] = TARGET_ELOOP, 743 [ERESTART] = TARGET_ERESTART, 744 [ESTRPIPE] = TARGET_ESTRPIPE, 745 [ENOTEMPTY] = TARGET_ENOTEMPTY, 746 [EUSERS] = TARGET_EUSERS, 747 [ENOTSOCK] = TARGET_ENOTSOCK, 748 [EDESTADDRREQ] = TARGET_EDESTADDRREQ, 749 [EMSGSIZE] = TARGET_EMSGSIZE, 750 [EPROTOTYPE] = TARGET_EPROTOTYPE, 751 [ENOPROTOOPT] = TARGET_ENOPROTOOPT, 752 [EPROTONOSUPPORT] = TARGET_EPROTONOSUPPORT, 753 [ESOCKTNOSUPPORT] = TARGET_ESOCKTNOSUPPORT, 754 [EOPNOTSUPP] = TARGET_EOPNOTSUPP, 755 [EPFNOSUPPORT] = TARGET_EPFNOSUPPORT, 756 [EAFNOSUPPORT] = TARGET_EAFNOSUPPORT, 757 [EADDRINUSE] = TARGET_EADDRINUSE, 758 [EADDRNOTAVAIL] = TARGET_EADDRNOTAVAIL, 759 [ENETDOWN] = TARGET_ENETDOWN, 760 [ENETUNREACH] = TARGET_ENETUNREACH, 761 [ENETRESET] = TARGET_ENETRESET, 762 [ECONNABORTED] = TARGET_ECONNABORTED, 763 [ECONNRESET] = TARGET_ECONNRESET, 764 [ENOBUFS] = TARGET_ENOBUFS, 765 [EISCONN] = TARGET_EISCONN, 766 [ENOTCONN] = TARGET_ENOTCONN, 767 [EUCLEAN] = TARGET_EUCLEAN, 768 [ENOTNAM] = TARGET_ENOTNAM, 769 [ENAVAIL] = TARGET_ENAVAIL, 770 [EISNAM] = TARGET_EISNAM, 771 [EREMOTEIO] = TARGET_EREMOTEIO, 772 [EDQUOT] = TARGET_EDQUOT, 773 [ESHUTDOWN] = TARGET_ESHUTDOWN, 774 [ETOOMANYREFS] = TARGET_ETOOMANYREFS, 775 [ETIMEDOUT] = TARGET_ETIMEDOUT, 776 [ECONNREFUSED] = TARGET_ECONNREFUSED, 777 [EHOSTDOWN] = TARGET_EHOSTDOWN, 778 [EHOSTUNREACH] = TARGET_EHOSTUNREACH, 779 [EALREADY] = TARGET_EALREADY, 780 [EINPROGRESS] = TARGET_EINPROGRESS, 781 [ESTALE] = TARGET_ESTALE, 782 [ECANCELED] = TARGET_ECANCELED, 783 [ENOMEDIUM] = TARGET_ENOMEDIUM, 784 [EMEDIUMTYPE] = TARGET_EMEDIUMTYPE, 785 #ifdef ENOKEY 786 [ENOKEY] = TARGET_ENOKEY, 787 #endif 788 #ifdef EKEYEXPIRED 789 [EKEYEXPIRED] = TARGET_EKEYEXPIRED, 790 #endif 791 #ifdef EKEYREVOKED 792 [EKEYREVOKED] = TARGET_EKEYREVOKED, 793 #endif 794 #ifdef EKEYREJECTED 795 [EKEYREJECTED] = TARGET_EKEYREJECTED, 796 #endif 797 #ifdef EOWNERDEAD 798 [EOWNERDEAD] = TARGET_EOWNERDEAD, 799 #endif 800 #ifdef ENOTRECOVERABLE 801 [ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE, 802 #endif 803 #ifdef ENOMSG 804 [ENOMSG] = TARGET_ENOMSG, 805 #endif 806 #ifdef ERKFILL 807 [ERFKILL] = TARGET_ERFKILL, 808 #endif 809 #ifdef EHWPOISON 810 [EHWPOISON] = TARGET_EHWPOISON, 811 #endif 812 }; 813 814 static inline int host_to_target_errno(int err) 815 { 816 if (err >= 0 && err < ERRNO_TABLE_SIZE && 817 host_to_target_errno_table[err]) { 818 return host_to_target_errno_table[err]; 819 } 820 return err; 821 } 822 823 static inline int target_to_host_errno(int err) 824 { 825 if (err >= 0 && err < ERRNO_TABLE_SIZE && 826 target_to_host_errno_table[err]) { 827 return target_to_host_errno_table[err]; 828 } 829 return err; 830 } 831 832 static inline abi_long get_errno(abi_long ret) 833 { 834 if (ret == -1) 835 return -host_to_target_errno(errno); 836 else 837 return ret; 838 } 839 840 static inline int is_error(abi_long ret) 841 { 842 return (abi_ulong)ret >= (abi_ulong)(-4096); 843 } 844 845 const char *target_strerror(int err) 846 { 847 if (err == TARGET_ERESTARTSYS) { 848 return "To be restarted"; 849 } 850 if (err == TARGET_QEMU_ESIGRETURN) { 851 return "Successful exit from sigreturn"; 852 } 853 854 if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) { 855 return NULL; 856 } 857 return strerror(target_to_host_errno(err)); 858 } 859 860 #define safe_syscall0(type, name) \ 861 static type safe_##name(void) \ 862 { \ 863 return safe_syscall(__NR_##name); \ 864 } 865 866 #define safe_syscall1(type, name, type1, arg1) \ 867 static type safe_##name(type1 arg1) \ 868 { \ 869 return safe_syscall(__NR_##name, arg1); \ 870 } 871 872 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \ 873 static type safe_##name(type1 arg1, type2 arg2) \ 874 { \ 875 return safe_syscall(__NR_##name, arg1, arg2); \ 876 } 877 878 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \ 879 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \ 880 { \ 881 return safe_syscall(__NR_##name, arg1, arg2, arg3); \ 882 } 883 884 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \ 885 type4, arg4) \ 886 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ 887 { \ 888 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \ 889 } 890 891 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \ 892 type4, arg4, type5, arg5) \ 893 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 894 type5 arg5) \ 895 { \ 896 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ 897 } 898 899 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \ 900 type4, arg4, type5, arg5, type6, arg6) \ 901 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ 902 type5 arg5, type6 arg6) \ 903 { \ 904 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ 905 } 906 907 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count) 908 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count) 909 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \ 910 int, flags, mode_t, mode) 911 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \ 912 struct rusage *, rusage) 913 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \ 914 int, options, struct rusage *, rusage) 915 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp) 916 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \ 917 fd_set *, exceptfds, struct timespec *, timeout, void *, sig) 918 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds, 919 struct timespec *, tsp, const sigset_t *, sigmask, 920 size_t, sigsetsize) 921 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events, 922 int, maxevents, int, timeout, const sigset_t *, sigmask, 923 size_t, sigsetsize) 924 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \ 925 const struct timespec *,timeout,int *,uaddr2,int,val3) 926 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize) 927 safe_syscall2(int, kill, pid_t, pid, int, sig) 928 safe_syscall2(int, tkill, int, tid, int, sig) 929 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig) 930 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt) 931 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt) 932 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt, 933 unsigned long, pos_l, unsigned long, pos_h) 934 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt, 935 unsigned long, pos_l, unsigned long, pos_h) 936 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr, 937 socklen_t, addrlen) 938 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len, 939 int, flags, const struct sockaddr *, addr, socklen_t, addrlen) 940 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len, 941 int, flags, struct sockaddr *, addr, socklen_t *, addrlen) 942 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags) 943 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags) 944 safe_syscall2(int, flock, int, fd, int, operation) 945 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo, 946 const struct timespec *, uts, size_t, sigsetsize) 947 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len, 948 int, flags) 949 safe_syscall2(int, nanosleep, const struct timespec *, req, 950 struct timespec *, rem) 951 #ifdef TARGET_NR_clock_nanosleep 952 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags, 953 const struct timespec *, req, struct timespec *, rem) 954 #endif 955 #ifdef __NR_msgsnd 956 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz, 957 int, flags) 958 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz, 959 long, msgtype, int, flags) 960 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops, 961 unsigned, nsops, const struct timespec *, timeout) 962 #else 963 /* This host kernel architecture uses a single ipc syscall; fake up 964 * wrappers for the sub-operations to hide this implementation detail. 965 * Annoyingly we can't include linux/ipc.h to get the constant definitions 966 * for the call parameter because some structs in there conflict with the 967 * sys/ipc.h ones. So we just define them here, and rely on them being 968 * the same for all host architectures. 969 */ 970 #define Q_SEMTIMEDOP 4 971 #define Q_MSGSND 11 972 #define Q_MSGRCV 12 973 #define Q_IPCCALL(VERSION, OP) ((VERSION) << 16 | (OP)) 974 975 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third, 976 void *, ptr, long, fifth) 977 static int safe_msgsnd(int msgid, const void *msgp, size_t sz, int flags) 978 { 979 return safe_ipc(Q_IPCCALL(0, Q_MSGSND), msgid, sz, flags, (void *)msgp, 0); 980 } 981 static int safe_msgrcv(int msgid, void *msgp, size_t sz, long type, int flags) 982 { 983 return safe_ipc(Q_IPCCALL(1, Q_MSGRCV), msgid, sz, flags, msgp, type); 984 } 985 static int safe_semtimedop(int semid, struct sembuf *tsops, unsigned nsops, 986 const struct timespec *timeout) 987 { 988 return safe_ipc(Q_IPCCALL(0, Q_SEMTIMEDOP), semid, nsops, 0, tsops, 989 (long)timeout); 990 } 991 #endif 992 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 993 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr, 994 size_t, len, unsigned, prio, const struct timespec *, timeout) 995 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr, 996 size_t, len, unsigned *, prio, const struct timespec *, timeout) 997 #endif 998 /* We do ioctl like this rather than via safe_syscall3 to preserve the 999 * "third argument might be integer or pointer or not present" behaviour of 1000 * the libc function. 1001 */ 1002 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__) 1003 /* Similarly for fcntl. Note that callers must always: 1004 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK 1005 * use the flock64 struct rather than unsuffixed flock 1006 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts. 1007 */ 1008 #ifdef __NR_fcntl64 1009 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__) 1010 #else 1011 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__) 1012 #endif 1013 1014 static inline int host_to_target_sock_type(int host_type) 1015 { 1016 int target_type; 1017 1018 switch (host_type & 0xf /* SOCK_TYPE_MASK */) { 1019 case SOCK_DGRAM: 1020 target_type = TARGET_SOCK_DGRAM; 1021 break; 1022 case SOCK_STREAM: 1023 target_type = TARGET_SOCK_STREAM; 1024 break; 1025 default: 1026 target_type = host_type & 0xf /* SOCK_TYPE_MASK */; 1027 break; 1028 } 1029 1030 #if defined(SOCK_CLOEXEC) 1031 if (host_type & SOCK_CLOEXEC) { 1032 target_type |= TARGET_SOCK_CLOEXEC; 1033 } 1034 #endif 1035 1036 #if defined(SOCK_NONBLOCK) 1037 if (host_type & SOCK_NONBLOCK) { 1038 target_type |= TARGET_SOCK_NONBLOCK; 1039 } 1040 #endif 1041 1042 return target_type; 1043 } 1044 1045 static abi_ulong target_brk; 1046 static abi_ulong target_original_brk; 1047 static abi_ulong brk_page; 1048 1049 void target_set_brk(abi_ulong new_brk) 1050 { 1051 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk); 1052 brk_page = HOST_PAGE_ALIGN(target_brk); 1053 } 1054 1055 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0) 1056 #define DEBUGF_BRK(message, args...) 1057 1058 /* do_brk() must return target values and target errnos. */ 1059 abi_long do_brk(abi_ulong new_brk) 1060 { 1061 abi_long mapped_addr; 1062 abi_ulong new_alloc_size; 1063 1064 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk); 1065 1066 if (!new_brk) { 1067 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk); 1068 return target_brk; 1069 } 1070 if (new_brk < target_original_brk) { 1071 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n", 1072 target_brk); 1073 return target_brk; 1074 } 1075 1076 /* If the new brk is less than the highest page reserved to the 1077 * target heap allocation, set it and we're almost done... */ 1078 if (new_brk <= brk_page) { 1079 /* Heap contents are initialized to zero, as for anonymous 1080 * mapped pages. */ 1081 if (new_brk > target_brk) { 1082 memset(g2h(target_brk), 0, new_brk - target_brk); 1083 } 1084 target_brk = new_brk; 1085 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk); 1086 return target_brk; 1087 } 1088 1089 /* We need to allocate more memory after the brk... Note that 1090 * we don't use MAP_FIXED because that will map over the top of 1091 * any existing mapping (like the one with the host libc or qemu 1092 * itself); instead we treat "mapped but at wrong address" as 1093 * a failure and unmap again. 1094 */ 1095 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page); 1096 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size, 1097 PROT_READ|PROT_WRITE, 1098 MAP_ANON|MAP_PRIVATE, 0, 0)); 1099 1100 if (mapped_addr == brk_page) { 1101 /* Heap contents are initialized to zero, as for anonymous 1102 * mapped pages. Technically the new pages are already 1103 * initialized to zero since they *are* anonymous mapped 1104 * pages, however we have to take care with the contents that 1105 * come from the remaining part of the previous page: it may 1106 * contains garbage data due to a previous heap usage (grown 1107 * then shrunken). */ 1108 memset(g2h(target_brk), 0, brk_page - target_brk); 1109 1110 target_brk = new_brk; 1111 brk_page = HOST_PAGE_ALIGN(target_brk); 1112 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n", 1113 target_brk); 1114 return target_brk; 1115 } else if (mapped_addr != -1) { 1116 /* Mapped but at wrong address, meaning there wasn't actually 1117 * enough space for this brk. 1118 */ 1119 target_munmap(mapped_addr, new_alloc_size); 1120 mapped_addr = -1; 1121 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk); 1122 } 1123 else { 1124 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk); 1125 } 1126 1127 #if defined(TARGET_ALPHA) 1128 /* We (partially) emulate OSF/1 on Alpha, which requires we 1129 return a proper errno, not an unchanged brk value. */ 1130 return -TARGET_ENOMEM; 1131 #endif 1132 /* For everything else, return the previous break. */ 1133 return target_brk; 1134 } 1135 1136 static inline abi_long copy_from_user_fdset(fd_set *fds, 1137 abi_ulong target_fds_addr, 1138 int n) 1139 { 1140 int i, nw, j, k; 1141 abi_ulong b, *target_fds; 1142 1143 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 1144 if (!(target_fds = lock_user(VERIFY_READ, 1145 target_fds_addr, 1146 sizeof(abi_ulong) * nw, 1147 1))) 1148 return -TARGET_EFAULT; 1149 1150 FD_ZERO(fds); 1151 k = 0; 1152 for (i = 0; i < nw; i++) { 1153 /* grab the abi_ulong */ 1154 __get_user(b, &target_fds[i]); 1155 for (j = 0; j < TARGET_ABI_BITS; j++) { 1156 /* check the bit inside the abi_ulong */ 1157 if ((b >> j) & 1) 1158 FD_SET(k, fds); 1159 k++; 1160 } 1161 } 1162 1163 unlock_user(target_fds, target_fds_addr, 0); 1164 1165 return 0; 1166 } 1167 1168 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr, 1169 abi_ulong target_fds_addr, 1170 int n) 1171 { 1172 if (target_fds_addr) { 1173 if (copy_from_user_fdset(fds, target_fds_addr, n)) 1174 return -TARGET_EFAULT; 1175 *fds_ptr = fds; 1176 } else { 1177 *fds_ptr = NULL; 1178 } 1179 return 0; 1180 } 1181 1182 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr, 1183 const fd_set *fds, 1184 int n) 1185 { 1186 int i, nw, j, k; 1187 abi_long v; 1188 abi_ulong *target_fds; 1189 1190 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS); 1191 if (!(target_fds = lock_user(VERIFY_WRITE, 1192 target_fds_addr, 1193 sizeof(abi_ulong) * nw, 1194 0))) 1195 return -TARGET_EFAULT; 1196 1197 k = 0; 1198 for (i = 0; i < nw; i++) { 1199 v = 0; 1200 for (j = 0; j < TARGET_ABI_BITS; j++) { 1201 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j); 1202 k++; 1203 } 1204 __put_user(v, &target_fds[i]); 1205 } 1206 1207 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw); 1208 1209 return 0; 1210 } 1211 1212 #if defined(__alpha__) 1213 #define HOST_HZ 1024 1214 #else 1215 #define HOST_HZ 100 1216 #endif 1217 1218 static inline abi_long host_to_target_clock_t(long ticks) 1219 { 1220 #if HOST_HZ == TARGET_HZ 1221 return ticks; 1222 #else 1223 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ; 1224 #endif 1225 } 1226 1227 static inline abi_long host_to_target_rusage(abi_ulong target_addr, 1228 const struct rusage *rusage) 1229 { 1230 struct target_rusage *target_rusage; 1231 1232 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0)) 1233 return -TARGET_EFAULT; 1234 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec); 1235 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec); 1236 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec); 1237 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec); 1238 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss); 1239 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss); 1240 target_rusage->ru_idrss = tswapal(rusage->ru_idrss); 1241 target_rusage->ru_isrss = tswapal(rusage->ru_isrss); 1242 target_rusage->ru_minflt = tswapal(rusage->ru_minflt); 1243 target_rusage->ru_majflt = tswapal(rusage->ru_majflt); 1244 target_rusage->ru_nswap = tswapal(rusage->ru_nswap); 1245 target_rusage->ru_inblock = tswapal(rusage->ru_inblock); 1246 target_rusage->ru_oublock = tswapal(rusage->ru_oublock); 1247 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd); 1248 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv); 1249 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals); 1250 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw); 1251 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw); 1252 unlock_user_struct(target_rusage, target_addr, 1); 1253 1254 return 0; 1255 } 1256 1257 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim) 1258 { 1259 abi_ulong target_rlim_swap; 1260 rlim_t result; 1261 1262 target_rlim_swap = tswapal(target_rlim); 1263 if (target_rlim_swap == TARGET_RLIM_INFINITY) 1264 return RLIM_INFINITY; 1265 1266 result = target_rlim_swap; 1267 if (target_rlim_swap != (rlim_t)result) 1268 return RLIM_INFINITY; 1269 1270 return result; 1271 } 1272 1273 static inline abi_ulong host_to_target_rlim(rlim_t rlim) 1274 { 1275 abi_ulong target_rlim_swap; 1276 abi_ulong result; 1277 1278 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim) 1279 target_rlim_swap = TARGET_RLIM_INFINITY; 1280 else 1281 target_rlim_swap = rlim; 1282 result = tswapal(target_rlim_swap); 1283 1284 return result; 1285 } 1286 1287 static inline int target_to_host_resource(int code) 1288 { 1289 switch (code) { 1290 case TARGET_RLIMIT_AS: 1291 return RLIMIT_AS; 1292 case TARGET_RLIMIT_CORE: 1293 return RLIMIT_CORE; 1294 case TARGET_RLIMIT_CPU: 1295 return RLIMIT_CPU; 1296 case TARGET_RLIMIT_DATA: 1297 return RLIMIT_DATA; 1298 case TARGET_RLIMIT_FSIZE: 1299 return RLIMIT_FSIZE; 1300 case TARGET_RLIMIT_LOCKS: 1301 return RLIMIT_LOCKS; 1302 case TARGET_RLIMIT_MEMLOCK: 1303 return RLIMIT_MEMLOCK; 1304 case TARGET_RLIMIT_MSGQUEUE: 1305 return RLIMIT_MSGQUEUE; 1306 case TARGET_RLIMIT_NICE: 1307 return RLIMIT_NICE; 1308 case TARGET_RLIMIT_NOFILE: 1309 return RLIMIT_NOFILE; 1310 case TARGET_RLIMIT_NPROC: 1311 return RLIMIT_NPROC; 1312 case TARGET_RLIMIT_RSS: 1313 return RLIMIT_RSS; 1314 case TARGET_RLIMIT_RTPRIO: 1315 return RLIMIT_RTPRIO; 1316 case TARGET_RLIMIT_SIGPENDING: 1317 return RLIMIT_SIGPENDING; 1318 case TARGET_RLIMIT_STACK: 1319 return RLIMIT_STACK; 1320 default: 1321 return code; 1322 } 1323 } 1324 1325 static inline abi_long copy_from_user_timeval(struct timeval *tv, 1326 abi_ulong target_tv_addr) 1327 { 1328 struct target_timeval *target_tv; 1329 1330 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) 1331 return -TARGET_EFAULT; 1332 1333 __get_user(tv->tv_sec, &target_tv->tv_sec); 1334 __get_user(tv->tv_usec, &target_tv->tv_usec); 1335 1336 unlock_user_struct(target_tv, target_tv_addr, 0); 1337 1338 return 0; 1339 } 1340 1341 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr, 1342 const struct timeval *tv) 1343 { 1344 struct target_timeval *target_tv; 1345 1346 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) 1347 return -TARGET_EFAULT; 1348 1349 __put_user(tv->tv_sec, &target_tv->tv_sec); 1350 __put_user(tv->tv_usec, &target_tv->tv_usec); 1351 1352 unlock_user_struct(target_tv, target_tv_addr, 1); 1353 1354 return 0; 1355 } 1356 1357 static inline abi_long copy_from_user_timezone(struct timezone *tz, 1358 abi_ulong target_tz_addr) 1359 { 1360 struct target_timezone *target_tz; 1361 1362 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) { 1363 return -TARGET_EFAULT; 1364 } 1365 1366 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); 1367 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime); 1368 1369 unlock_user_struct(target_tz, target_tz_addr, 0); 1370 1371 return 0; 1372 } 1373 1374 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 1375 #include <mqueue.h> 1376 1377 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr, 1378 abi_ulong target_mq_attr_addr) 1379 { 1380 struct target_mq_attr *target_mq_attr; 1381 1382 if (!lock_user_struct(VERIFY_READ, target_mq_attr, 1383 target_mq_attr_addr, 1)) 1384 return -TARGET_EFAULT; 1385 1386 __get_user(attr->mq_flags, &target_mq_attr->mq_flags); 1387 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1388 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1389 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1390 1391 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0); 1392 1393 return 0; 1394 } 1395 1396 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr, 1397 const struct mq_attr *attr) 1398 { 1399 struct target_mq_attr *target_mq_attr; 1400 1401 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr, 1402 target_mq_attr_addr, 0)) 1403 return -TARGET_EFAULT; 1404 1405 __put_user(attr->mq_flags, &target_mq_attr->mq_flags); 1406 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); 1407 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); 1408 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); 1409 1410 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1); 1411 1412 return 0; 1413 } 1414 #endif 1415 1416 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) 1417 /* do_select() must return target values and target errnos. */ 1418 static abi_long do_select(int n, 1419 abi_ulong rfd_addr, abi_ulong wfd_addr, 1420 abi_ulong efd_addr, abi_ulong target_tv_addr) 1421 { 1422 fd_set rfds, wfds, efds; 1423 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 1424 struct timeval tv; 1425 struct timespec ts, *ts_ptr; 1426 abi_long ret; 1427 1428 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 1429 if (ret) { 1430 return ret; 1431 } 1432 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 1433 if (ret) { 1434 return ret; 1435 } 1436 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 1437 if (ret) { 1438 return ret; 1439 } 1440 1441 if (target_tv_addr) { 1442 if (copy_from_user_timeval(&tv, target_tv_addr)) 1443 return -TARGET_EFAULT; 1444 ts.tv_sec = tv.tv_sec; 1445 ts.tv_nsec = tv.tv_usec * 1000; 1446 ts_ptr = &ts; 1447 } else { 1448 ts_ptr = NULL; 1449 } 1450 1451 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 1452 ts_ptr, NULL)); 1453 1454 if (!is_error(ret)) { 1455 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) 1456 return -TARGET_EFAULT; 1457 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) 1458 return -TARGET_EFAULT; 1459 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) 1460 return -TARGET_EFAULT; 1461 1462 if (target_tv_addr) { 1463 tv.tv_sec = ts.tv_sec; 1464 tv.tv_usec = ts.tv_nsec / 1000; 1465 if (copy_to_user_timeval(target_tv_addr, &tv)) { 1466 return -TARGET_EFAULT; 1467 } 1468 } 1469 } 1470 1471 return ret; 1472 } 1473 1474 #if defined(TARGET_WANT_OLD_SYS_SELECT) 1475 static abi_long do_old_select(abi_ulong arg1) 1476 { 1477 struct target_sel_arg_struct *sel; 1478 abi_ulong inp, outp, exp, tvp; 1479 long nsel; 1480 1481 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) { 1482 return -TARGET_EFAULT; 1483 } 1484 1485 nsel = tswapal(sel->n); 1486 inp = tswapal(sel->inp); 1487 outp = tswapal(sel->outp); 1488 exp = tswapal(sel->exp); 1489 tvp = tswapal(sel->tvp); 1490 1491 unlock_user_struct(sel, arg1, 0); 1492 1493 return do_select(nsel, inp, outp, exp, tvp); 1494 } 1495 #endif 1496 #endif 1497 1498 static abi_long do_pipe2(int host_pipe[], int flags) 1499 { 1500 #ifdef CONFIG_PIPE2 1501 return pipe2(host_pipe, flags); 1502 #else 1503 return -ENOSYS; 1504 #endif 1505 } 1506 1507 static abi_long do_pipe(void *cpu_env, abi_ulong pipedes, 1508 int flags, int is_pipe2) 1509 { 1510 int host_pipe[2]; 1511 abi_long ret; 1512 ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe); 1513 1514 if (is_error(ret)) 1515 return get_errno(ret); 1516 1517 /* Several targets have special calling conventions for the original 1518 pipe syscall, but didn't replicate this into the pipe2 syscall. */ 1519 if (!is_pipe2) { 1520 #if defined(TARGET_ALPHA) 1521 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1]; 1522 return host_pipe[0]; 1523 #elif defined(TARGET_MIPS) 1524 ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1]; 1525 return host_pipe[0]; 1526 #elif defined(TARGET_SH4) 1527 ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1]; 1528 return host_pipe[0]; 1529 #elif defined(TARGET_SPARC) 1530 ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1]; 1531 return host_pipe[0]; 1532 #endif 1533 } 1534 1535 if (put_user_s32(host_pipe[0], pipedes) 1536 || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0]))) 1537 return -TARGET_EFAULT; 1538 return get_errno(ret); 1539 } 1540 1541 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn, 1542 abi_ulong target_addr, 1543 socklen_t len) 1544 { 1545 struct target_ip_mreqn *target_smreqn; 1546 1547 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1); 1548 if (!target_smreqn) 1549 return -TARGET_EFAULT; 1550 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr; 1551 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr; 1552 if (len == sizeof(struct target_ip_mreqn)) 1553 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex); 1554 unlock_user(target_smreqn, target_addr, 0); 1555 1556 return 0; 1557 } 1558 1559 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr, 1560 abi_ulong target_addr, 1561 socklen_t len) 1562 { 1563 const socklen_t unix_maxlen = sizeof (struct sockaddr_un); 1564 sa_family_t sa_family; 1565 struct target_sockaddr *target_saddr; 1566 1567 if (fd_trans_target_to_host_addr(fd)) { 1568 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len); 1569 } 1570 1571 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1); 1572 if (!target_saddr) 1573 return -TARGET_EFAULT; 1574 1575 sa_family = tswap16(target_saddr->sa_family); 1576 1577 /* Oops. The caller might send a incomplete sun_path; sun_path 1578 * must be terminated by \0 (see the manual page), but 1579 * unfortunately it is quite common to specify sockaddr_un 1580 * length as "strlen(x->sun_path)" while it should be 1581 * "strlen(...) + 1". We'll fix that here if needed. 1582 * Linux kernel has a similar feature. 1583 */ 1584 1585 if (sa_family == AF_UNIX) { 1586 if (len < unix_maxlen && len > 0) { 1587 char *cp = (char*)target_saddr; 1588 1589 if ( cp[len-1] && !cp[len] ) 1590 len++; 1591 } 1592 if (len > unix_maxlen) 1593 len = unix_maxlen; 1594 } 1595 1596 memcpy(addr, target_saddr, len); 1597 addr->sa_family = sa_family; 1598 if (sa_family == AF_NETLINK) { 1599 struct sockaddr_nl *nladdr; 1600 1601 nladdr = (struct sockaddr_nl *)addr; 1602 nladdr->nl_pid = tswap32(nladdr->nl_pid); 1603 nladdr->nl_groups = tswap32(nladdr->nl_groups); 1604 } else if (sa_family == AF_PACKET) { 1605 struct target_sockaddr_ll *lladdr; 1606 1607 lladdr = (struct target_sockaddr_ll *)addr; 1608 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex); 1609 lladdr->sll_hatype = tswap16(lladdr->sll_hatype); 1610 } 1611 unlock_user(target_saddr, target_addr, 0); 1612 1613 return 0; 1614 } 1615 1616 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr, 1617 struct sockaddr *addr, 1618 socklen_t len) 1619 { 1620 struct target_sockaddr *target_saddr; 1621 1622 if (len == 0) { 1623 return 0; 1624 } 1625 assert(addr); 1626 1627 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0); 1628 if (!target_saddr) 1629 return -TARGET_EFAULT; 1630 memcpy(target_saddr, addr, len); 1631 if (len >= offsetof(struct target_sockaddr, sa_family) + 1632 sizeof(target_saddr->sa_family)) { 1633 target_saddr->sa_family = tswap16(addr->sa_family); 1634 } 1635 if (addr->sa_family == AF_NETLINK && len >= sizeof(struct sockaddr_nl)) { 1636 struct sockaddr_nl *target_nl = (struct sockaddr_nl *)target_saddr; 1637 target_nl->nl_pid = tswap32(target_nl->nl_pid); 1638 target_nl->nl_groups = tswap32(target_nl->nl_groups); 1639 } else if (addr->sa_family == AF_PACKET) { 1640 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr; 1641 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex); 1642 target_ll->sll_hatype = tswap16(target_ll->sll_hatype); 1643 } else if (addr->sa_family == AF_INET6 && 1644 len >= sizeof(struct target_sockaddr_in6)) { 1645 struct target_sockaddr_in6 *target_in6 = 1646 (struct target_sockaddr_in6 *)target_saddr; 1647 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id); 1648 } 1649 unlock_user(target_saddr, target_addr, len); 1650 1651 return 0; 1652 } 1653 1654 static inline abi_long target_to_host_cmsg(struct msghdr *msgh, 1655 struct target_msghdr *target_msgh) 1656 { 1657 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1658 abi_long msg_controllen; 1659 abi_ulong target_cmsg_addr; 1660 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1661 socklen_t space = 0; 1662 1663 msg_controllen = tswapal(target_msgh->msg_controllen); 1664 if (msg_controllen < sizeof (struct target_cmsghdr)) 1665 goto the_end; 1666 target_cmsg_addr = tswapal(target_msgh->msg_control); 1667 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1); 1668 target_cmsg_start = target_cmsg; 1669 if (!target_cmsg) 1670 return -TARGET_EFAULT; 1671 1672 while (cmsg && target_cmsg) { 1673 void *data = CMSG_DATA(cmsg); 1674 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1675 1676 int len = tswapal(target_cmsg->cmsg_len) 1677 - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr)); 1678 1679 space += CMSG_SPACE(len); 1680 if (space > msgh->msg_controllen) { 1681 space -= CMSG_SPACE(len); 1682 /* This is a QEMU bug, since we allocated the payload 1683 * area ourselves (unlike overflow in host-to-target 1684 * conversion, which is just the guest giving us a buffer 1685 * that's too small). It can't happen for the payload types 1686 * we currently support; if it becomes an issue in future 1687 * we would need to improve our allocation strategy to 1688 * something more intelligent than "twice the size of the 1689 * target buffer we're reading from". 1690 */ 1691 gemu_log("Host cmsg overflow\n"); 1692 break; 1693 } 1694 1695 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) { 1696 cmsg->cmsg_level = SOL_SOCKET; 1697 } else { 1698 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level); 1699 } 1700 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type); 1701 cmsg->cmsg_len = CMSG_LEN(len); 1702 1703 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { 1704 int *fd = (int *)data; 1705 int *target_fd = (int *)target_data; 1706 int i, numfds = len / sizeof(int); 1707 1708 for (i = 0; i < numfds; i++) { 1709 __get_user(fd[i], target_fd + i); 1710 } 1711 } else if (cmsg->cmsg_level == SOL_SOCKET 1712 && cmsg->cmsg_type == SCM_CREDENTIALS) { 1713 struct ucred *cred = (struct ucred *)data; 1714 struct target_ucred *target_cred = 1715 (struct target_ucred *)target_data; 1716 1717 __get_user(cred->pid, &target_cred->pid); 1718 __get_user(cred->uid, &target_cred->uid); 1719 __get_user(cred->gid, &target_cred->gid); 1720 } else { 1721 gemu_log("Unsupported ancillary data: %d/%d\n", 1722 cmsg->cmsg_level, cmsg->cmsg_type); 1723 memcpy(data, target_data, len); 1724 } 1725 1726 cmsg = CMSG_NXTHDR(msgh, cmsg); 1727 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 1728 target_cmsg_start); 1729 } 1730 unlock_user(target_cmsg, target_cmsg_addr, 0); 1731 the_end: 1732 msgh->msg_controllen = space; 1733 return 0; 1734 } 1735 1736 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh, 1737 struct msghdr *msgh) 1738 { 1739 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); 1740 abi_long msg_controllen; 1741 abi_ulong target_cmsg_addr; 1742 struct target_cmsghdr *target_cmsg, *target_cmsg_start; 1743 socklen_t space = 0; 1744 1745 msg_controllen = tswapal(target_msgh->msg_controllen); 1746 if (msg_controllen < sizeof (struct target_cmsghdr)) 1747 goto the_end; 1748 target_cmsg_addr = tswapal(target_msgh->msg_control); 1749 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0); 1750 target_cmsg_start = target_cmsg; 1751 if (!target_cmsg) 1752 return -TARGET_EFAULT; 1753 1754 while (cmsg && target_cmsg) { 1755 void *data = CMSG_DATA(cmsg); 1756 void *target_data = TARGET_CMSG_DATA(target_cmsg); 1757 1758 int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr)); 1759 int tgt_len, tgt_space; 1760 1761 /* We never copy a half-header but may copy half-data; 1762 * this is Linux's behaviour in put_cmsg(). Note that 1763 * truncation here is a guest problem (which we report 1764 * to the guest via the CTRUNC bit), unlike truncation 1765 * in target_to_host_cmsg, which is a QEMU bug. 1766 */ 1767 if (msg_controllen < sizeof(struct cmsghdr)) { 1768 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1769 break; 1770 } 1771 1772 if (cmsg->cmsg_level == SOL_SOCKET) { 1773 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET); 1774 } else { 1775 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level); 1776 } 1777 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type); 1778 1779 tgt_len = TARGET_CMSG_LEN(len); 1780 1781 /* Payload types which need a different size of payload on 1782 * the target must adjust tgt_len here. 1783 */ 1784 switch (cmsg->cmsg_level) { 1785 case SOL_SOCKET: 1786 switch (cmsg->cmsg_type) { 1787 case SO_TIMESTAMP: 1788 tgt_len = sizeof(struct target_timeval); 1789 break; 1790 default: 1791 break; 1792 } 1793 default: 1794 break; 1795 } 1796 1797 if (msg_controllen < tgt_len) { 1798 target_msgh->msg_flags |= tswap32(MSG_CTRUNC); 1799 tgt_len = msg_controllen; 1800 } 1801 1802 /* We must now copy-and-convert len bytes of payload 1803 * into tgt_len bytes of destination space. Bear in mind 1804 * that in both source and destination we may be dealing 1805 * with a truncated value! 1806 */ 1807 switch (cmsg->cmsg_level) { 1808 case SOL_SOCKET: 1809 switch (cmsg->cmsg_type) { 1810 case SCM_RIGHTS: 1811 { 1812 int *fd = (int *)data; 1813 int *target_fd = (int *)target_data; 1814 int i, numfds = tgt_len / sizeof(int); 1815 1816 for (i = 0; i < numfds; i++) { 1817 __put_user(fd[i], target_fd + i); 1818 } 1819 break; 1820 } 1821 case SO_TIMESTAMP: 1822 { 1823 struct timeval *tv = (struct timeval *)data; 1824 struct target_timeval *target_tv = 1825 (struct target_timeval *)target_data; 1826 1827 if (len != sizeof(struct timeval) || 1828 tgt_len != sizeof(struct target_timeval)) { 1829 goto unimplemented; 1830 } 1831 1832 /* copy struct timeval to target */ 1833 __put_user(tv->tv_sec, &target_tv->tv_sec); 1834 __put_user(tv->tv_usec, &target_tv->tv_usec); 1835 break; 1836 } 1837 case SCM_CREDENTIALS: 1838 { 1839 struct ucred *cred = (struct ucred *)data; 1840 struct target_ucred *target_cred = 1841 (struct target_ucred *)target_data; 1842 1843 __put_user(cred->pid, &target_cred->pid); 1844 __put_user(cred->uid, &target_cred->uid); 1845 __put_user(cred->gid, &target_cred->gid); 1846 break; 1847 } 1848 default: 1849 goto unimplemented; 1850 } 1851 break; 1852 1853 case SOL_IP: 1854 switch (cmsg->cmsg_type) { 1855 case IP_TTL: 1856 { 1857 uint32_t *v = (uint32_t *)data; 1858 uint32_t *t_int = (uint32_t *)target_data; 1859 1860 __put_user(*v, t_int); 1861 break; 1862 } 1863 case IP_RECVERR: 1864 { 1865 struct errhdr_t { 1866 struct sock_extended_err ee; 1867 struct sockaddr_in offender; 1868 }; 1869 struct errhdr_t *errh = (struct errhdr_t *)data; 1870 struct errhdr_t *target_errh = 1871 (struct errhdr_t *)target_data; 1872 1873 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 1874 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 1875 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 1876 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 1877 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 1878 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 1879 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 1880 host_to_target_sockaddr((unsigned long) &target_errh->offender, 1881 (void *) &errh->offender, sizeof(errh->offender)); 1882 break; 1883 } 1884 default: 1885 goto unimplemented; 1886 } 1887 break; 1888 1889 case SOL_IPV6: 1890 switch (cmsg->cmsg_type) { 1891 case IPV6_HOPLIMIT: 1892 { 1893 uint32_t *v = (uint32_t *)data; 1894 uint32_t *t_int = (uint32_t *)target_data; 1895 1896 __put_user(*v, t_int); 1897 break; 1898 } 1899 case IPV6_RECVERR: 1900 { 1901 struct errhdr6_t { 1902 struct sock_extended_err ee; 1903 struct sockaddr_in6 offender; 1904 }; 1905 struct errhdr6_t *errh = (struct errhdr6_t *)data; 1906 struct errhdr6_t *target_errh = 1907 (struct errhdr6_t *)target_data; 1908 1909 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno); 1910 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin); 1911 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type); 1912 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code); 1913 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad); 1914 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info); 1915 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data); 1916 host_to_target_sockaddr((unsigned long) &target_errh->offender, 1917 (void *) &errh->offender, sizeof(errh->offender)); 1918 break; 1919 } 1920 default: 1921 goto unimplemented; 1922 } 1923 break; 1924 1925 default: 1926 unimplemented: 1927 gemu_log("Unsupported ancillary data: %d/%d\n", 1928 cmsg->cmsg_level, cmsg->cmsg_type); 1929 memcpy(target_data, data, MIN(len, tgt_len)); 1930 if (tgt_len > len) { 1931 memset(target_data + len, 0, tgt_len - len); 1932 } 1933 } 1934 1935 target_cmsg->cmsg_len = tswapal(tgt_len); 1936 tgt_space = TARGET_CMSG_SPACE(len); 1937 if (msg_controllen < tgt_space) { 1938 tgt_space = msg_controllen; 1939 } 1940 msg_controllen -= tgt_space; 1941 space += tgt_space; 1942 cmsg = CMSG_NXTHDR(msgh, cmsg); 1943 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg, 1944 target_cmsg_start); 1945 } 1946 unlock_user(target_cmsg, target_cmsg_addr, space); 1947 the_end: 1948 target_msgh->msg_controllen = tswapal(space); 1949 return 0; 1950 } 1951 1952 static void tswap_nlmsghdr(struct nlmsghdr *nlh) 1953 { 1954 nlh->nlmsg_len = tswap32(nlh->nlmsg_len); 1955 nlh->nlmsg_type = tswap16(nlh->nlmsg_type); 1956 nlh->nlmsg_flags = tswap16(nlh->nlmsg_flags); 1957 nlh->nlmsg_seq = tswap32(nlh->nlmsg_seq); 1958 nlh->nlmsg_pid = tswap32(nlh->nlmsg_pid); 1959 } 1960 1961 static abi_long host_to_target_for_each_nlmsg(struct nlmsghdr *nlh, 1962 size_t len, 1963 abi_long (*host_to_target_nlmsg) 1964 (struct nlmsghdr *)) 1965 { 1966 uint32_t nlmsg_len; 1967 abi_long ret; 1968 1969 while (len > sizeof(struct nlmsghdr)) { 1970 1971 nlmsg_len = nlh->nlmsg_len; 1972 if (nlmsg_len < sizeof(struct nlmsghdr) || 1973 nlmsg_len > len) { 1974 break; 1975 } 1976 1977 switch (nlh->nlmsg_type) { 1978 case NLMSG_DONE: 1979 tswap_nlmsghdr(nlh); 1980 return 0; 1981 case NLMSG_NOOP: 1982 break; 1983 case NLMSG_ERROR: 1984 { 1985 struct nlmsgerr *e = NLMSG_DATA(nlh); 1986 e->error = tswap32(e->error); 1987 tswap_nlmsghdr(&e->msg); 1988 tswap_nlmsghdr(nlh); 1989 return 0; 1990 } 1991 default: 1992 ret = host_to_target_nlmsg(nlh); 1993 if (ret < 0) { 1994 tswap_nlmsghdr(nlh); 1995 return ret; 1996 } 1997 break; 1998 } 1999 tswap_nlmsghdr(nlh); 2000 len -= NLMSG_ALIGN(nlmsg_len); 2001 nlh = (struct nlmsghdr *)(((char*)nlh) + NLMSG_ALIGN(nlmsg_len)); 2002 } 2003 return 0; 2004 } 2005 2006 static abi_long target_to_host_for_each_nlmsg(struct nlmsghdr *nlh, 2007 size_t len, 2008 abi_long (*target_to_host_nlmsg) 2009 (struct nlmsghdr *)) 2010 { 2011 int ret; 2012 2013 while (len > sizeof(struct nlmsghdr)) { 2014 if (tswap32(nlh->nlmsg_len) < sizeof(struct nlmsghdr) || 2015 tswap32(nlh->nlmsg_len) > len) { 2016 break; 2017 } 2018 tswap_nlmsghdr(nlh); 2019 switch (nlh->nlmsg_type) { 2020 case NLMSG_DONE: 2021 return 0; 2022 case NLMSG_NOOP: 2023 break; 2024 case NLMSG_ERROR: 2025 { 2026 struct nlmsgerr *e = NLMSG_DATA(nlh); 2027 e->error = tswap32(e->error); 2028 tswap_nlmsghdr(&e->msg); 2029 return 0; 2030 } 2031 default: 2032 ret = target_to_host_nlmsg(nlh); 2033 if (ret < 0) { 2034 return ret; 2035 } 2036 } 2037 len -= NLMSG_ALIGN(nlh->nlmsg_len); 2038 nlh = (struct nlmsghdr *)(((char *)nlh) + NLMSG_ALIGN(nlh->nlmsg_len)); 2039 } 2040 return 0; 2041 } 2042 2043 #ifdef CONFIG_RTNETLINK 2044 static abi_long host_to_target_for_each_nlattr(struct nlattr *nlattr, 2045 size_t len, void *context, 2046 abi_long (*host_to_target_nlattr) 2047 (struct nlattr *, 2048 void *context)) 2049 { 2050 unsigned short nla_len; 2051 abi_long ret; 2052 2053 while (len > sizeof(struct nlattr)) { 2054 nla_len = nlattr->nla_len; 2055 if (nla_len < sizeof(struct nlattr) || 2056 nla_len > len) { 2057 break; 2058 } 2059 ret = host_to_target_nlattr(nlattr, context); 2060 nlattr->nla_len = tswap16(nlattr->nla_len); 2061 nlattr->nla_type = tswap16(nlattr->nla_type); 2062 if (ret < 0) { 2063 return ret; 2064 } 2065 len -= NLA_ALIGN(nla_len); 2066 nlattr = (struct nlattr *)(((char *)nlattr) + NLA_ALIGN(nla_len)); 2067 } 2068 return 0; 2069 } 2070 2071 static abi_long host_to_target_for_each_rtattr(struct rtattr *rtattr, 2072 size_t len, 2073 abi_long (*host_to_target_rtattr) 2074 (struct rtattr *)) 2075 { 2076 unsigned short rta_len; 2077 abi_long ret; 2078 2079 while (len > sizeof(struct rtattr)) { 2080 rta_len = rtattr->rta_len; 2081 if (rta_len < sizeof(struct rtattr) || 2082 rta_len > len) { 2083 break; 2084 } 2085 ret = host_to_target_rtattr(rtattr); 2086 rtattr->rta_len = tswap16(rtattr->rta_len); 2087 rtattr->rta_type = tswap16(rtattr->rta_type); 2088 if (ret < 0) { 2089 return ret; 2090 } 2091 len -= RTA_ALIGN(rta_len); 2092 rtattr = (struct rtattr *)(((char *)rtattr) + RTA_ALIGN(rta_len)); 2093 } 2094 return 0; 2095 } 2096 2097 #define NLA_DATA(nla) ((void *)((char *)(nla)) + NLA_HDRLEN) 2098 2099 static abi_long host_to_target_data_bridge_nlattr(struct nlattr *nlattr, 2100 void *context) 2101 { 2102 uint16_t *u16; 2103 uint32_t *u32; 2104 uint64_t *u64; 2105 2106 switch (nlattr->nla_type) { 2107 /* no data */ 2108 case QEMU_IFLA_BR_FDB_FLUSH: 2109 break; 2110 /* binary */ 2111 case QEMU_IFLA_BR_GROUP_ADDR: 2112 break; 2113 /* uint8_t */ 2114 case QEMU_IFLA_BR_VLAN_FILTERING: 2115 case QEMU_IFLA_BR_TOPOLOGY_CHANGE: 2116 case QEMU_IFLA_BR_TOPOLOGY_CHANGE_DETECTED: 2117 case QEMU_IFLA_BR_MCAST_ROUTER: 2118 case QEMU_IFLA_BR_MCAST_SNOOPING: 2119 case QEMU_IFLA_BR_MCAST_QUERY_USE_IFADDR: 2120 case QEMU_IFLA_BR_MCAST_QUERIER: 2121 case QEMU_IFLA_BR_NF_CALL_IPTABLES: 2122 case QEMU_IFLA_BR_NF_CALL_IP6TABLES: 2123 case QEMU_IFLA_BR_NF_CALL_ARPTABLES: 2124 break; 2125 /* uint16_t */ 2126 case QEMU_IFLA_BR_PRIORITY: 2127 case QEMU_IFLA_BR_VLAN_PROTOCOL: 2128 case QEMU_IFLA_BR_GROUP_FWD_MASK: 2129 case QEMU_IFLA_BR_ROOT_PORT: 2130 case QEMU_IFLA_BR_VLAN_DEFAULT_PVID: 2131 u16 = NLA_DATA(nlattr); 2132 *u16 = tswap16(*u16); 2133 break; 2134 /* uint32_t */ 2135 case QEMU_IFLA_BR_FORWARD_DELAY: 2136 case QEMU_IFLA_BR_HELLO_TIME: 2137 case QEMU_IFLA_BR_MAX_AGE: 2138 case QEMU_IFLA_BR_AGEING_TIME: 2139 case QEMU_IFLA_BR_STP_STATE: 2140 case QEMU_IFLA_BR_ROOT_PATH_COST: 2141 case QEMU_IFLA_BR_MCAST_HASH_ELASTICITY: 2142 case QEMU_IFLA_BR_MCAST_HASH_MAX: 2143 case QEMU_IFLA_BR_MCAST_LAST_MEMBER_CNT: 2144 case QEMU_IFLA_BR_MCAST_STARTUP_QUERY_CNT: 2145 u32 = NLA_DATA(nlattr); 2146 *u32 = tswap32(*u32); 2147 break; 2148 /* uint64_t */ 2149 case QEMU_IFLA_BR_HELLO_TIMER: 2150 case QEMU_IFLA_BR_TCN_TIMER: 2151 case QEMU_IFLA_BR_GC_TIMER: 2152 case QEMU_IFLA_BR_TOPOLOGY_CHANGE_TIMER: 2153 case QEMU_IFLA_BR_MCAST_LAST_MEMBER_INTVL: 2154 case QEMU_IFLA_BR_MCAST_MEMBERSHIP_INTVL: 2155 case QEMU_IFLA_BR_MCAST_QUERIER_INTVL: 2156 case QEMU_IFLA_BR_MCAST_QUERY_INTVL: 2157 case QEMU_IFLA_BR_MCAST_QUERY_RESPONSE_INTVL: 2158 case QEMU_IFLA_BR_MCAST_STARTUP_QUERY_INTVL: 2159 u64 = NLA_DATA(nlattr); 2160 *u64 = tswap64(*u64); 2161 break; 2162 /* ifla_bridge_id: uin8_t[] */ 2163 case QEMU_IFLA_BR_ROOT_ID: 2164 case QEMU_IFLA_BR_BRIDGE_ID: 2165 break; 2166 default: 2167 gemu_log("Unknown QEMU_IFLA_BR type %d\n", nlattr->nla_type); 2168 break; 2169 } 2170 return 0; 2171 } 2172 2173 static abi_long host_to_target_slave_data_bridge_nlattr(struct nlattr *nlattr, 2174 void *context) 2175 { 2176 uint16_t *u16; 2177 uint32_t *u32; 2178 uint64_t *u64; 2179 2180 switch (nlattr->nla_type) { 2181 /* uint8_t */ 2182 case QEMU_IFLA_BRPORT_STATE: 2183 case QEMU_IFLA_BRPORT_MODE: 2184 case QEMU_IFLA_BRPORT_GUARD: 2185 case QEMU_IFLA_BRPORT_PROTECT: 2186 case QEMU_IFLA_BRPORT_FAST_LEAVE: 2187 case QEMU_IFLA_BRPORT_LEARNING: 2188 case QEMU_IFLA_BRPORT_UNICAST_FLOOD: 2189 case QEMU_IFLA_BRPORT_PROXYARP: 2190 case QEMU_IFLA_BRPORT_LEARNING_SYNC: 2191 case QEMU_IFLA_BRPORT_PROXYARP_WIFI: 2192 case QEMU_IFLA_BRPORT_TOPOLOGY_CHANGE_ACK: 2193 case QEMU_IFLA_BRPORT_CONFIG_PENDING: 2194 case QEMU_IFLA_BRPORT_MULTICAST_ROUTER: 2195 break; 2196 /* uint16_t */ 2197 case QEMU_IFLA_BRPORT_PRIORITY: 2198 case QEMU_IFLA_BRPORT_DESIGNATED_PORT: 2199 case QEMU_IFLA_BRPORT_DESIGNATED_COST: 2200 case QEMU_IFLA_BRPORT_ID: 2201 case QEMU_IFLA_BRPORT_NO: 2202 u16 = NLA_DATA(nlattr); 2203 *u16 = tswap16(*u16); 2204 break; 2205 /* uin32_t */ 2206 case QEMU_IFLA_BRPORT_COST: 2207 u32 = NLA_DATA(nlattr); 2208 *u32 = tswap32(*u32); 2209 break; 2210 /* uint64_t */ 2211 case QEMU_IFLA_BRPORT_MESSAGE_AGE_TIMER: 2212 case QEMU_IFLA_BRPORT_FORWARD_DELAY_TIMER: 2213 case QEMU_IFLA_BRPORT_HOLD_TIMER: 2214 u64 = NLA_DATA(nlattr); 2215 *u64 = tswap64(*u64); 2216 break; 2217 /* ifla_bridge_id: uint8_t[] */ 2218 case QEMU_IFLA_BRPORT_ROOT_ID: 2219 case QEMU_IFLA_BRPORT_BRIDGE_ID: 2220 break; 2221 default: 2222 gemu_log("Unknown QEMU_IFLA_BRPORT type %d\n", nlattr->nla_type); 2223 break; 2224 } 2225 return 0; 2226 } 2227 2228 struct linkinfo_context { 2229 int len; 2230 char *name; 2231 int slave_len; 2232 char *slave_name; 2233 }; 2234 2235 static abi_long host_to_target_data_linkinfo_nlattr(struct nlattr *nlattr, 2236 void *context) 2237 { 2238 struct linkinfo_context *li_context = context; 2239 2240 switch (nlattr->nla_type) { 2241 /* string */ 2242 case QEMU_IFLA_INFO_KIND: 2243 li_context->name = NLA_DATA(nlattr); 2244 li_context->len = nlattr->nla_len - NLA_HDRLEN; 2245 break; 2246 case QEMU_IFLA_INFO_SLAVE_KIND: 2247 li_context->slave_name = NLA_DATA(nlattr); 2248 li_context->slave_len = nlattr->nla_len - NLA_HDRLEN; 2249 break; 2250 /* stats */ 2251 case QEMU_IFLA_INFO_XSTATS: 2252 /* FIXME: only used by CAN */ 2253 break; 2254 /* nested */ 2255 case QEMU_IFLA_INFO_DATA: 2256 if (strncmp(li_context->name, "bridge", 2257 li_context->len) == 0) { 2258 return host_to_target_for_each_nlattr(NLA_DATA(nlattr), 2259 nlattr->nla_len, 2260 NULL, 2261 host_to_target_data_bridge_nlattr); 2262 } else { 2263 gemu_log("Unknown QEMU_IFLA_INFO_KIND %s\n", li_context->name); 2264 } 2265 break; 2266 case QEMU_IFLA_INFO_SLAVE_DATA: 2267 if (strncmp(li_context->slave_name, "bridge", 2268 li_context->slave_len) == 0) { 2269 return host_to_target_for_each_nlattr(NLA_DATA(nlattr), 2270 nlattr->nla_len, 2271 NULL, 2272 host_to_target_slave_data_bridge_nlattr); 2273 } else { 2274 gemu_log("Unknown QEMU_IFLA_INFO_SLAVE_KIND %s\n", 2275 li_context->slave_name); 2276 } 2277 break; 2278 default: 2279 gemu_log("Unknown host QEMU_IFLA_INFO type: %d\n", nlattr->nla_type); 2280 break; 2281 } 2282 2283 return 0; 2284 } 2285 2286 static abi_long host_to_target_data_inet_nlattr(struct nlattr *nlattr, 2287 void *context) 2288 { 2289 uint32_t *u32; 2290 int i; 2291 2292 switch (nlattr->nla_type) { 2293 case QEMU_IFLA_INET_CONF: 2294 u32 = NLA_DATA(nlattr); 2295 for (i = 0; i < (nlattr->nla_len - NLA_HDRLEN) / sizeof(*u32); 2296 i++) { 2297 u32[i] = tswap32(u32[i]); 2298 } 2299 break; 2300 default: 2301 gemu_log("Unknown host AF_INET type: %d\n", nlattr->nla_type); 2302 } 2303 return 0; 2304 } 2305 2306 static abi_long host_to_target_data_inet6_nlattr(struct nlattr *nlattr, 2307 void *context) 2308 { 2309 uint32_t *u32; 2310 uint64_t *u64; 2311 struct ifla_cacheinfo *ci; 2312 int i; 2313 2314 switch (nlattr->nla_type) { 2315 /* binaries */ 2316 case QEMU_IFLA_INET6_TOKEN: 2317 break; 2318 /* uint8_t */ 2319 case QEMU_IFLA_INET6_ADDR_GEN_MODE: 2320 break; 2321 /* uint32_t */ 2322 case QEMU_IFLA_INET6_FLAGS: 2323 u32 = NLA_DATA(nlattr); 2324 *u32 = tswap32(*u32); 2325 break; 2326 /* uint32_t[] */ 2327 case QEMU_IFLA_INET6_CONF: 2328 u32 = NLA_DATA(nlattr); 2329 for (i = 0; i < (nlattr->nla_len - NLA_HDRLEN) / sizeof(*u32); 2330 i++) { 2331 u32[i] = tswap32(u32[i]); 2332 } 2333 break; 2334 /* ifla_cacheinfo */ 2335 case QEMU_IFLA_INET6_CACHEINFO: 2336 ci = NLA_DATA(nlattr); 2337 ci->max_reasm_len = tswap32(ci->max_reasm_len); 2338 ci->tstamp = tswap32(ci->tstamp); 2339 ci->reachable_time = tswap32(ci->reachable_time); 2340 ci->retrans_time = tswap32(ci->retrans_time); 2341 break; 2342 /* uint64_t[] */ 2343 case QEMU_IFLA_INET6_STATS: 2344 case QEMU_IFLA_INET6_ICMP6STATS: 2345 u64 = NLA_DATA(nlattr); 2346 for (i = 0; i < (nlattr->nla_len - NLA_HDRLEN) / sizeof(*u64); 2347 i++) { 2348 u64[i] = tswap64(u64[i]); 2349 } 2350 break; 2351 default: 2352 gemu_log("Unknown host AF_INET6 type: %d\n", nlattr->nla_type); 2353 } 2354 return 0; 2355 } 2356 2357 static abi_long host_to_target_data_spec_nlattr(struct nlattr *nlattr, 2358 void *context) 2359 { 2360 switch (nlattr->nla_type) { 2361 case AF_INET: 2362 return host_to_target_for_each_nlattr(NLA_DATA(nlattr), nlattr->nla_len, 2363 NULL, 2364 host_to_target_data_inet_nlattr); 2365 case AF_INET6: 2366 return host_to_target_for_each_nlattr(NLA_DATA(nlattr), nlattr->nla_len, 2367 NULL, 2368 host_to_target_data_inet6_nlattr); 2369 default: 2370 gemu_log("Unknown host AF_SPEC type: %d\n", nlattr->nla_type); 2371 break; 2372 } 2373 return 0; 2374 } 2375 2376 static abi_long host_to_target_data_link_rtattr(struct rtattr *rtattr) 2377 { 2378 uint32_t *u32; 2379 struct rtnl_link_stats *st; 2380 struct rtnl_link_stats64 *st64; 2381 struct rtnl_link_ifmap *map; 2382 struct linkinfo_context li_context; 2383 2384 switch (rtattr->rta_type) { 2385 /* binary stream */ 2386 case QEMU_IFLA_ADDRESS: 2387 case QEMU_IFLA_BROADCAST: 2388 /* string */ 2389 case QEMU_IFLA_IFNAME: 2390 case QEMU_IFLA_QDISC: 2391 break; 2392 /* uin8_t */ 2393 case QEMU_IFLA_OPERSTATE: 2394 case QEMU_IFLA_LINKMODE: 2395 case QEMU_IFLA_CARRIER: 2396 case QEMU_IFLA_PROTO_DOWN: 2397 break; 2398 /* uint32_t */ 2399 case QEMU_IFLA_MTU: 2400 case QEMU_IFLA_LINK: 2401 case QEMU_IFLA_WEIGHT: 2402 case QEMU_IFLA_TXQLEN: 2403 case QEMU_IFLA_CARRIER_CHANGES: 2404 case QEMU_IFLA_NUM_RX_QUEUES: 2405 case QEMU_IFLA_NUM_TX_QUEUES: 2406 case QEMU_IFLA_PROMISCUITY: 2407 case QEMU_IFLA_EXT_MASK: 2408 case QEMU_IFLA_LINK_NETNSID: 2409 case QEMU_IFLA_GROUP: 2410 case QEMU_IFLA_MASTER: 2411 case QEMU_IFLA_NUM_VF: 2412 case QEMU_IFLA_GSO_MAX_SEGS: 2413 case QEMU_IFLA_GSO_MAX_SIZE: 2414 u32 = RTA_DATA(rtattr); 2415 *u32 = tswap32(*u32); 2416 break; 2417 /* struct rtnl_link_stats */ 2418 case QEMU_IFLA_STATS: 2419 st = RTA_DATA(rtattr); 2420 st->rx_packets = tswap32(st->rx_packets); 2421 st->tx_packets = tswap32(st->tx_packets); 2422 st->rx_bytes = tswap32(st->rx_bytes); 2423 st->tx_bytes = tswap32(st->tx_bytes); 2424 st->rx_errors = tswap32(st->rx_errors); 2425 st->tx_errors = tswap32(st->tx_errors); 2426 st->rx_dropped = tswap32(st->rx_dropped); 2427 st->tx_dropped = tswap32(st->tx_dropped); 2428 st->multicast = tswap32(st->multicast); 2429 st->collisions = tswap32(st->collisions); 2430 2431 /* detailed rx_errors: */ 2432 st->rx_length_errors = tswap32(st->rx_length_errors); 2433 st->rx_over_errors = tswap32(st->rx_over_errors); 2434 st->rx_crc_errors = tswap32(st->rx_crc_errors); 2435 st->rx_frame_errors = tswap32(st->rx_frame_errors); 2436 st->rx_fifo_errors = tswap32(st->rx_fifo_errors); 2437 st->rx_missed_errors = tswap32(st->rx_missed_errors); 2438 2439 /* detailed tx_errors */ 2440 st->tx_aborted_errors = tswap32(st->tx_aborted_errors); 2441 st->tx_carrier_errors = tswap32(st->tx_carrier_errors); 2442 st->tx_fifo_errors = tswap32(st->tx_fifo_errors); 2443 st->tx_heartbeat_errors = tswap32(st->tx_heartbeat_errors); 2444 st->tx_window_errors = tswap32(st->tx_window_errors); 2445 2446 /* for cslip etc */ 2447 st->rx_compressed = tswap32(st->rx_compressed); 2448 st->tx_compressed = tswap32(st->tx_compressed); 2449 break; 2450 /* struct rtnl_link_stats64 */ 2451 case QEMU_IFLA_STATS64: 2452 st64 = RTA_DATA(rtattr); 2453 st64->rx_packets = tswap64(st64->rx_packets); 2454 st64->tx_packets = tswap64(st64->tx_packets); 2455 st64->rx_bytes = tswap64(st64->rx_bytes); 2456 st64->tx_bytes = tswap64(st64->tx_bytes); 2457 st64->rx_errors = tswap64(st64->rx_errors); 2458 st64->tx_errors = tswap64(st64->tx_errors); 2459 st64->rx_dropped = tswap64(st64->rx_dropped); 2460 st64->tx_dropped = tswap64(st64->tx_dropped); 2461 st64->multicast = tswap64(st64->multicast); 2462 st64->collisions = tswap64(st64->collisions); 2463 2464 /* detailed rx_errors: */ 2465 st64->rx_length_errors = tswap64(st64->rx_length_errors); 2466 st64->rx_over_errors = tswap64(st64->rx_over_errors); 2467 st64->rx_crc_errors = tswap64(st64->rx_crc_errors); 2468 st64->rx_frame_errors = tswap64(st64->rx_frame_errors); 2469 st64->rx_fifo_errors = tswap64(st64->rx_fifo_errors); 2470 st64->rx_missed_errors = tswap64(st64->rx_missed_errors); 2471 2472 /* detailed tx_errors */ 2473 st64->tx_aborted_errors = tswap64(st64->tx_aborted_errors); 2474 st64->tx_carrier_errors = tswap64(st64->tx_carrier_errors); 2475 st64->tx_fifo_errors = tswap64(st64->tx_fifo_errors); 2476 st64->tx_heartbeat_errors = tswap64(st64->tx_heartbeat_errors); 2477 st64->tx_window_errors = tswap64(st64->tx_window_errors); 2478 2479 /* for cslip etc */ 2480 st64->rx_compressed = tswap64(st64->rx_compressed); 2481 st64->tx_compressed = tswap64(st64->tx_compressed); 2482 break; 2483 /* struct rtnl_link_ifmap */ 2484 case QEMU_IFLA_MAP: 2485 map = RTA_DATA(rtattr); 2486 map->mem_start = tswap64(map->mem_start); 2487 map->mem_end = tswap64(map->mem_end); 2488 map->base_addr = tswap64(map->base_addr); 2489 map->irq = tswap16(map->irq); 2490 break; 2491 /* nested */ 2492 case QEMU_IFLA_LINKINFO: 2493 memset(&li_context, 0, sizeof(li_context)); 2494 return host_to_target_for_each_nlattr(RTA_DATA(rtattr), rtattr->rta_len, 2495 &li_context, 2496 host_to_target_data_linkinfo_nlattr); 2497 case QEMU_IFLA_AF_SPEC: 2498 return host_to_target_for_each_nlattr(RTA_DATA(rtattr), rtattr->rta_len, 2499 NULL, 2500 host_to_target_data_spec_nlattr); 2501 default: 2502 gemu_log("Unknown host QEMU_IFLA type: %d\n", rtattr->rta_type); 2503 break; 2504 } 2505 return 0; 2506 } 2507 2508 static abi_long host_to_target_data_addr_rtattr(struct rtattr *rtattr) 2509 { 2510 uint32_t *u32; 2511 struct ifa_cacheinfo *ci; 2512 2513 switch (rtattr->rta_type) { 2514 /* binary: depends on family type */ 2515 case IFA_ADDRESS: 2516 case IFA_LOCAL: 2517 break; 2518 /* string */ 2519 case IFA_LABEL: 2520 break; 2521 /* u32 */ 2522 case IFA_FLAGS: 2523 case IFA_BROADCAST: 2524 u32 = RTA_DATA(rtattr); 2525 *u32 = tswap32(*u32); 2526 break; 2527 /* struct ifa_cacheinfo */ 2528 case IFA_CACHEINFO: 2529 ci = RTA_DATA(rtattr); 2530 ci->ifa_prefered = tswap32(ci->ifa_prefered); 2531 ci->ifa_valid = tswap32(ci->ifa_valid); 2532 ci->cstamp = tswap32(ci->cstamp); 2533 ci->tstamp = tswap32(ci->tstamp); 2534 break; 2535 default: 2536 gemu_log("Unknown host IFA type: %d\n", rtattr->rta_type); 2537 break; 2538 } 2539 return 0; 2540 } 2541 2542 static abi_long host_to_target_data_route_rtattr(struct rtattr *rtattr) 2543 { 2544 uint32_t *u32; 2545 switch (rtattr->rta_type) { 2546 /* binary: depends on family type */ 2547 case RTA_GATEWAY: 2548 case RTA_DST: 2549 case RTA_PREFSRC: 2550 break; 2551 /* u32 */ 2552 case RTA_PRIORITY: 2553 case RTA_TABLE: 2554 case RTA_OIF: 2555 u32 = RTA_DATA(rtattr); 2556 *u32 = tswap32(*u32); 2557 break; 2558 default: 2559 gemu_log("Unknown host RTA type: %d\n", rtattr->rta_type); 2560 break; 2561 } 2562 return 0; 2563 } 2564 2565 static abi_long host_to_target_link_rtattr(struct rtattr *rtattr, 2566 uint32_t rtattr_len) 2567 { 2568 return host_to_target_for_each_rtattr(rtattr, rtattr_len, 2569 host_to_target_data_link_rtattr); 2570 } 2571 2572 static abi_long host_to_target_addr_rtattr(struct rtattr *rtattr, 2573 uint32_t rtattr_len) 2574 { 2575 return host_to_target_for_each_rtattr(rtattr, rtattr_len, 2576 host_to_target_data_addr_rtattr); 2577 } 2578 2579 static abi_long host_to_target_route_rtattr(struct rtattr *rtattr, 2580 uint32_t rtattr_len) 2581 { 2582 return host_to_target_for_each_rtattr(rtattr, rtattr_len, 2583 host_to_target_data_route_rtattr); 2584 } 2585 2586 static abi_long host_to_target_data_route(struct nlmsghdr *nlh) 2587 { 2588 uint32_t nlmsg_len; 2589 struct ifinfomsg *ifi; 2590 struct ifaddrmsg *ifa; 2591 struct rtmsg *rtm; 2592 2593 nlmsg_len = nlh->nlmsg_len; 2594 switch (nlh->nlmsg_type) { 2595 case RTM_NEWLINK: 2596 case RTM_DELLINK: 2597 case RTM_GETLINK: 2598 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifi))) { 2599 ifi = NLMSG_DATA(nlh); 2600 ifi->ifi_type = tswap16(ifi->ifi_type); 2601 ifi->ifi_index = tswap32(ifi->ifi_index); 2602 ifi->ifi_flags = tswap32(ifi->ifi_flags); 2603 ifi->ifi_change = tswap32(ifi->ifi_change); 2604 host_to_target_link_rtattr(IFLA_RTA(ifi), 2605 nlmsg_len - NLMSG_LENGTH(sizeof(*ifi))); 2606 } 2607 break; 2608 case RTM_NEWADDR: 2609 case RTM_DELADDR: 2610 case RTM_GETADDR: 2611 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifa))) { 2612 ifa = NLMSG_DATA(nlh); 2613 ifa->ifa_index = tswap32(ifa->ifa_index); 2614 host_to_target_addr_rtattr(IFA_RTA(ifa), 2615 nlmsg_len - NLMSG_LENGTH(sizeof(*ifa))); 2616 } 2617 break; 2618 case RTM_NEWROUTE: 2619 case RTM_DELROUTE: 2620 case RTM_GETROUTE: 2621 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*rtm))) { 2622 rtm = NLMSG_DATA(nlh); 2623 rtm->rtm_flags = tswap32(rtm->rtm_flags); 2624 host_to_target_route_rtattr(RTM_RTA(rtm), 2625 nlmsg_len - NLMSG_LENGTH(sizeof(*rtm))); 2626 } 2627 break; 2628 default: 2629 return -TARGET_EINVAL; 2630 } 2631 return 0; 2632 } 2633 2634 static inline abi_long host_to_target_nlmsg_route(struct nlmsghdr *nlh, 2635 size_t len) 2636 { 2637 return host_to_target_for_each_nlmsg(nlh, len, host_to_target_data_route); 2638 } 2639 2640 static abi_long target_to_host_for_each_rtattr(struct rtattr *rtattr, 2641 size_t len, 2642 abi_long (*target_to_host_rtattr) 2643 (struct rtattr *)) 2644 { 2645 abi_long ret; 2646 2647 while (len >= sizeof(struct rtattr)) { 2648 if (tswap16(rtattr->rta_len) < sizeof(struct rtattr) || 2649 tswap16(rtattr->rta_len) > len) { 2650 break; 2651 } 2652 rtattr->rta_len = tswap16(rtattr->rta_len); 2653 rtattr->rta_type = tswap16(rtattr->rta_type); 2654 ret = target_to_host_rtattr(rtattr); 2655 if (ret < 0) { 2656 return ret; 2657 } 2658 len -= RTA_ALIGN(rtattr->rta_len); 2659 rtattr = (struct rtattr *)(((char *)rtattr) + 2660 RTA_ALIGN(rtattr->rta_len)); 2661 } 2662 return 0; 2663 } 2664 2665 static abi_long target_to_host_data_link_rtattr(struct rtattr *rtattr) 2666 { 2667 switch (rtattr->rta_type) { 2668 default: 2669 gemu_log("Unknown target QEMU_IFLA type: %d\n", rtattr->rta_type); 2670 break; 2671 } 2672 return 0; 2673 } 2674 2675 static abi_long target_to_host_data_addr_rtattr(struct rtattr *rtattr) 2676 { 2677 switch (rtattr->rta_type) { 2678 /* binary: depends on family type */ 2679 case IFA_LOCAL: 2680 case IFA_ADDRESS: 2681 break; 2682 default: 2683 gemu_log("Unknown target IFA type: %d\n", rtattr->rta_type); 2684 break; 2685 } 2686 return 0; 2687 } 2688 2689 static abi_long target_to_host_data_route_rtattr(struct rtattr *rtattr) 2690 { 2691 uint32_t *u32; 2692 switch (rtattr->rta_type) { 2693 /* binary: depends on family type */ 2694 case RTA_DST: 2695 case RTA_SRC: 2696 case RTA_GATEWAY: 2697 break; 2698 /* u32 */ 2699 case RTA_PRIORITY: 2700 case RTA_OIF: 2701 u32 = RTA_DATA(rtattr); 2702 *u32 = tswap32(*u32); 2703 break; 2704 default: 2705 gemu_log("Unknown target RTA type: %d\n", rtattr->rta_type); 2706 break; 2707 } 2708 return 0; 2709 } 2710 2711 static void target_to_host_link_rtattr(struct rtattr *rtattr, 2712 uint32_t rtattr_len) 2713 { 2714 target_to_host_for_each_rtattr(rtattr, rtattr_len, 2715 target_to_host_data_link_rtattr); 2716 } 2717 2718 static void target_to_host_addr_rtattr(struct rtattr *rtattr, 2719 uint32_t rtattr_len) 2720 { 2721 target_to_host_for_each_rtattr(rtattr, rtattr_len, 2722 target_to_host_data_addr_rtattr); 2723 } 2724 2725 static void target_to_host_route_rtattr(struct rtattr *rtattr, 2726 uint32_t rtattr_len) 2727 { 2728 target_to_host_for_each_rtattr(rtattr, rtattr_len, 2729 target_to_host_data_route_rtattr); 2730 } 2731 2732 static abi_long target_to_host_data_route(struct nlmsghdr *nlh) 2733 { 2734 struct ifinfomsg *ifi; 2735 struct ifaddrmsg *ifa; 2736 struct rtmsg *rtm; 2737 2738 switch (nlh->nlmsg_type) { 2739 case RTM_GETLINK: 2740 break; 2741 case RTM_NEWLINK: 2742 case RTM_DELLINK: 2743 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifi))) { 2744 ifi = NLMSG_DATA(nlh); 2745 ifi->ifi_type = tswap16(ifi->ifi_type); 2746 ifi->ifi_index = tswap32(ifi->ifi_index); 2747 ifi->ifi_flags = tswap32(ifi->ifi_flags); 2748 ifi->ifi_change = tswap32(ifi->ifi_change); 2749 target_to_host_link_rtattr(IFLA_RTA(ifi), nlh->nlmsg_len - 2750 NLMSG_LENGTH(sizeof(*ifi))); 2751 } 2752 break; 2753 case RTM_GETADDR: 2754 case RTM_NEWADDR: 2755 case RTM_DELADDR: 2756 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifa))) { 2757 ifa = NLMSG_DATA(nlh); 2758 ifa->ifa_index = tswap32(ifa->ifa_index); 2759 target_to_host_addr_rtattr(IFA_RTA(ifa), nlh->nlmsg_len - 2760 NLMSG_LENGTH(sizeof(*ifa))); 2761 } 2762 break; 2763 case RTM_GETROUTE: 2764 break; 2765 case RTM_NEWROUTE: 2766 case RTM_DELROUTE: 2767 if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*rtm))) { 2768 rtm = NLMSG_DATA(nlh); 2769 rtm->rtm_flags = tswap32(rtm->rtm_flags); 2770 target_to_host_route_rtattr(RTM_RTA(rtm), nlh->nlmsg_len - 2771 NLMSG_LENGTH(sizeof(*rtm))); 2772 } 2773 break; 2774 default: 2775 return -TARGET_EOPNOTSUPP; 2776 } 2777 return 0; 2778 } 2779 2780 static abi_long target_to_host_nlmsg_route(struct nlmsghdr *nlh, size_t len) 2781 { 2782 return target_to_host_for_each_nlmsg(nlh, len, target_to_host_data_route); 2783 } 2784 #endif /* CONFIG_RTNETLINK */ 2785 2786 static abi_long host_to_target_data_audit(struct nlmsghdr *nlh) 2787 { 2788 switch (nlh->nlmsg_type) { 2789 default: 2790 gemu_log("Unknown host audit message type %d\n", 2791 nlh->nlmsg_type); 2792 return -TARGET_EINVAL; 2793 } 2794 return 0; 2795 } 2796 2797 static inline abi_long host_to_target_nlmsg_audit(struct nlmsghdr *nlh, 2798 size_t len) 2799 { 2800 return host_to_target_for_each_nlmsg(nlh, len, host_to_target_data_audit); 2801 } 2802 2803 static abi_long target_to_host_data_audit(struct nlmsghdr *nlh) 2804 { 2805 switch (nlh->nlmsg_type) { 2806 case AUDIT_USER: 2807 case AUDIT_FIRST_USER_MSG ... AUDIT_LAST_USER_MSG: 2808 case AUDIT_FIRST_USER_MSG2 ... AUDIT_LAST_USER_MSG2: 2809 break; 2810 default: 2811 gemu_log("Unknown target audit message type %d\n", 2812 nlh->nlmsg_type); 2813 return -TARGET_EINVAL; 2814 } 2815 2816 return 0; 2817 } 2818 2819 static abi_long target_to_host_nlmsg_audit(struct nlmsghdr *nlh, size_t len) 2820 { 2821 return target_to_host_for_each_nlmsg(nlh, len, target_to_host_data_audit); 2822 } 2823 2824 /* do_setsockopt() Must return target values and target errnos. */ 2825 static abi_long do_setsockopt(int sockfd, int level, int optname, 2826 abi_ulong optval_addr, socklen_t optlen) 2827 { 2828 abi_long ret; 2829 int val; 2830 struct ip_mreqn *ip_mreq; 2831 struct ip_mreq_source *ip_mreq_source; 2832 2833 switch(level) { 2834 case SOL_TCP: 2835 /* TCP options all take an 'int' value. */ 2836 if (optlen < sizeof(uint32_t)) 2837 return -TARGET_EINVAL; 2838 2839 if (get_user_u32(val, optval_addr)) 2840 return -TARGET_EFAULT; 2841 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 2842 break; 2843 case SOL_IP: 2844 switch(optname) { 2845 case IP_TOS: 2846 case IP_TTL: 2847 case IP_HDRINCL: 2848 case IP_ROUTER_ALERT: 2849 case IP_RECVOPTS: 2850 case IP_RETOPTS: 2851 case IP_PKTINFO: 2852 case IP_MTU_DISCOVER: 2853 case IP_RECVERR: 2854 case IP_RECVTTL: 2855 case IP_RECVTOS: 2856 #ifdef IP_FREEBIND 2857 case IP_FREEBIND: 2858 #endif 2859 case IP_MULTICAST_TTL: 2860 case IP_MULTICAST_LOOP: 2861 val = 0; 2862 if (optlen >= sizeof(uint32_t)) { 2863 if (get_user_u32(val, optval_addr)) 2864 return -TARGET_EFAULT; 2865 } else if (optlen >= 1) { 2866 if (get_user_u8(val, optval_addr)) 2867 return -TARGET_EFAULT; 2868 } 2869 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); 2870 break; 2871 case IP_ADD_MEMBERSHIP: 2872 case IP_DROP_MEMBERSHIP: 2873 if (optlen < sizeof (struct target_ip_mreq) || 2874 optlen > sizeof (struct target_ip_mreqn)) 2875 return -TARGET_EINVAL; 2876 2877 ip_mreq = (struct ip_mreqn *) alloca(optlen); 2878 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen); 2879 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen)); 2880 break; 2881 2882 case IP_BLOCK_SOURCE: 2883 case IP_UNBLOCK_SOURCE: 2884 case IP_ADD_SOURCE_MEMBERSHIP: 2885 case IP_DROP_SOURCE_MEMBERSHIP: 2886 if (optlen != sizeof (struct target_ip_mreq_source)) 2887 return -TARGET_EINVAL; 2888 2889 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1); 2890 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen)); 2891 unlock_user (ip_mreq_source, optval_addr, 0); 2892 break; 2893 2894 default: 2895 goto unimplemented; 2896 } 2897 break; 2898 case SOL_IPV6: 2899 switch (optname) { 2900 case IPV6_MTU_DISCOVER: 2901 case IPV6_MTU: 2902 case IPV6_V6ONLY: 2903 case IPV6_RECVPKTINFO: 2904 case IPV6_UNICAST_HOPS: 2905 case IPV6_RECVERR: 2906 case IPV6_RECVHOPLIMIT: 2907 case IPV6_2292HOPLIMIT: 2908 case IPV6_CHECKSUM: 2909 val = 0; 2910 if (optlen < sizeof(uint32_t)) { 2911 return -TARGET_EINVAL; 2912 } 2913 if (get_user_u32(val, optval_addr)) { 2914 return -TARGET_EFAULT; 2915 } 2916 ret = get_errno(setsockopt(sockfd, level, optname, 2917 &val, sizeof(val))); 2918 break; 2919 case IPV6_PKTINFO: 2920 { 2921 struct in6_pktinfo pki; 2922 2923 if (optlen < sizeof(pki)) { 2924 return -TARGET_EINVAL; 2925 } 2926 2927 if (copy_from_user(&pki, optval_addr, sizeof(pki))) { 2928 return -TARGET_EFAULT; 2929 } 2930 2931 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex); 2932 2933 ret = get_errno(setsockopt(sockfd, level, optname, 2934 &pki, sizeof(pki))); 2935 break; 2936 } 2937 default: 2938 goto unimplemented; 2939 } 2940 break; 2941 case SOL_ICMPV6: 2942 switch (optname) { 2943 case ICMPV6_FILTER: 2944 { 2945 struct icmp6_filter icmp6f; 2946 2947 if (optlen > sizeof(icmp6f)) { 2948 optlen = sizeof(icmp6f); 2949 } 2950 2951 if (copy_from_user(&icmp6f, optval_addr, optlen)) { 2952 return -TARGET_EFAULT; 2953 } 2954 2955 for (val = 0; val < 8; val++) { 2956 icmp6f.data[val] = tswap32(icmp6f.data[val]); 2957 } 2958 2959 ret = get_errno(setsockopt(sockfd, level, optname, 2960 &icmp6f, optlen)); 2961 break; 2962 } 2963 default: 2964 goto unimplemented; 2965 } 2966 break; 2967 case SOL_RAW: 2968 switch (optname) { 2969 case ICMP_FILTER: 2970 case IPV6_CHECKSUM: 2971 /* those take an u32 value */ 2972 if (optlen < sizeof(uint32_t)) { 2973 return -TARGET_EINVAL; 2974 } 2975 2976 if (get_user_u32(val, optval_addr)) { 2977 return -TARGET_EFAULT; 2978 } 2979 ret = get_errno(setsockopt(sockfd, level, optname, 2980 &val, sizeof(val))); 2981 break; 2982 2983 default: 2984 goto unimplemented; 2985 } 2986 break; 2987 case TARGET_SOL_SOCKET: 2988 switch (optname) { 2989 case TARGET_SO_RCVTIMEO: 2990 { 2991 struct timeval tv; 2992 2993 optname = SO_RCVTIMEO; 2994 2995 set_timeout: 2996 if (optlen != sizeof(struct target_timeval)) { 2997 return -TARGET_EINVAL; 2998 } 2999 3000 if (copy_from_user_timeval(&tv, optval_addr)) { 3001 return -TARGET_EFAULT; 3002 } 3003 3004 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 3005 &tv, sizeof(tv))); 3006 return ret; 3007 } 3008 case TARGET_SO_SNDTIMEO: 3009 optname = SO_SNDTIMEO; 3010 goto set_timeout; 3011 case TARGET_SO_ATTACH_FILTER: 3012 { 3013 struct target_sock_fprog *tfprog; 3014 struct target_sock_filter *tfilter; 3015 struct sock_fprog fprog; 3016 struct sock_filter *filter; 3017 int i; 3018 3019 if (optlen != sizeof(*tfprog)) { 3020 return -TARGET_EINVAL; 3021 } 3022 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) { 3023 return -TARGET_EFAULT; 3024 } 3025 if (!lock_user_struct(VERIFY_READ, tfilter, 3026 tswapal(tfprog->filter), 0)) { 3027 unlock_user_struct(tfprog, optval_addr, 1); 3028 return -TARGET_EFAULT; 3029 } 3030 3031 fprog.len = tswap16(tfprog->len); 3032 filter = g_try_new(struct sock_filter, fprog.len); 3033 if (filter == NULL) { 3034 unlock_user_struct(tfilter, tfprog->filter, 1); 3035 unlock_user_struct(tfprog, optval_addr, 1); 3036 return -TARGET_ENOMEM; 3037 } 3038 for (i = 0; i < fprog.len; i++) { 3039 filter[i].code = tswap16(tfilter[i].code); 3040 filter[i].jt = tfilter[i].jt; 3041 filter[i].jf = tfilter[i].jf; 3042 filter[i].k = tswap32(tfilter[i].k); 3043 } 3044 fprog.filter = filter; 3045 3046 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, 3047 SO_ATTACH_FILTER, &fprog, sizeof(fprog))); 3048 g_free(filter); 3049 3050 unlock_user_struct(tfilter, tfprog->filter, 1); 3051 unlock_user_struct(tfprog, optval_addr, 1); 3052 return ret; 3053 } 3054 case TARGET_SO_BINDTODEVICE: 3055 { 3056 char *dev_ifname, *addr_ifname; 3057 3058 if (optlen > IFNAMSIZ - 1) { 3059 optlen = IFNAMSIZ - 1; 3060 } 3061 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1); 3062 if (!dev_ifname) { 3063 return -TARGET_EFAULT; 3064 } 3065 optname = SO_BINDTODEVICE; 3066 addr_ifname = alloca(IFNAMSIZ); 3067 memcpy(addr_ifname, dev_ifname, optlen); 3068 addr_ifname[optlen] = 0; 3069 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, 3070 addr_ifname, optlen)); 3071 unlock_user (dev_ifname, optval_addr, 0); 3072 return ret; 3073 } 3074 /* Options with 'int' argument. */ 3075 case TARGET_SO_DEBUG: 3076 optname = SO_DEBUG; 3077 break; 3078 case TARGET_SO_REUSEADDR: 3079 optname = SO_REUSEADDR; 3080 break; 3081 case TARGET_SO_TYPE: 3082 optname = SO_TYPE; 3083 break; 3084 case TARGET_SO_ERROR: 3085 optname = SO_ERROR; 3086 break; 3087 case TARGET_SO_DONTROUTE: 3088 optname = SO_DONTROUTE; 3089 break; 3090 case TARGET_SO_BROADCAST: 3091 optname = SO_BROADCAST; 3092 break; 3093 case TARGET_SO_SNDBUF: 3094 optname = SO_SNDBUF; 3095 break; 3096 case TARGET_SO_SNDBUFFORCE: 3097 optname = SO_SNDBUFFORCE; 3098 break; 3099 case TARGET_SO_RCVBUF: 3100 optname = SO_RCVBUF; 3101 break; 3102 case TARGET_SO_RCVBUFFORCE: 3103 optname = SO_RCVBUFFORCE; 3104 break; 3105 case TARGET_SO_KEEPALIVE: 3106 optname = SO_KEEPALIVE; 3107 break; 3108 case TARGET_SO_OOBINLINE: 3109 optname = SO_OOBINLINE; 3110 break; 3111 case TARGET_SO_NO_CHECK: 3112 optname = SO_NO_CHECK; 3113 break; 3114 case TARGET_SO_PRIORITY: 3115 optname = SO_PRIORITY; 3116 break; 3117 #ifdef SO_BSDCOMPAT 3118 case TARGET_SO_BSDCOMPAT: 3119 optname = SO_BSDCOMPAT; 3120 break; 3121 #endif 3122 case TARGET_SO_PASSCRED: 3123 optname = SO_PASSCRED; 3124 break; 3125 case TARGET_SO_PASSSEC: 3126 optname = SO_PASSSEC; 3127 break; 3128 case TARGET_SO_TIMESTAMP: 3129 optname = SO_TIMESTAMP; 3130 break; 3131 case TARGET_SO_RCVLOWAT: 3132 optname = SO_RCVLOWAT; 3133 break; 3134 break; 3135 default: 3136 goto unimplemented; 3137 } 3138 if (optlen < sizeof(uint32_t)) 3139 return -TARGET_EINVAL; 3140 3141 if (get_user_u32(val, optval_addr)) 3142 return -TARGET_EFAULT; 3143 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val))); 3144 break; 3145 default: 3146 unimplemented: 3147 gemu_log("Unsupported setsockopt level=%d optname=%d\n", level, optname); 3148 ret = -TARGET_ENOPROTOOPT; 3149 } 3150 return ret; 3151 } 3152 3153 /* do_getsockopt() Must return target values and target errnos. */ 3154 static abi_long do_getsockopt(int sockfd, int level, int optname, 3155 abi_ulong optval_addr, abi_ulong optlen) 3156 { 3157 abi_long ret; 3158 int len, val; 3159 socklen_t lv; 3160 3161 switch(level) { 3162 case TARGET_SOL_SOCKET: 3163 level = SOL_SOCKET; 3164 switch (optname) { 3165 /* These don't just return a single integer */ 3166 case TARGET_SO_LINGER: 3167 case TARGET_SO_RCVTIMEO: 3168 case TARGET_SO_SNDTIMEO: 3169 case TARGET_SO_PEERNAME: 3170 goto unimplemented; 3171 case TARGET_SO_PEERCRED: { 3172 struct ucred cr; 3173 socklen_t crlen; 3174 struct target_ucred *tcr; 3175 3176 if (get_user_u32(len, optlen)) { 3177 return -TARGET_EFAULT; 3178 } 3179 if (len < 0) { 3180 return -TARGET_EINVAL; 3181 } 3182 3183 crlen = sizeof(cr); 3184 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED, 3185 &cr, &crlen)); 3186 if (ret < 0) { 3187 return ret; 3188 } 3189 if (len > crlen) { 3190 len = crlen; 3191 } 3192 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) { 3193 return -TARGET_EFAULT; 3194 } 3195 __put_user(cr.pid, &tcr->pid); 3196 __put_user(cr.uid, &tcr->uid); 3197 __put_user(cr.gid, &tcr->gid); 3198 unlock_user_struct(tcr, optval_addr, 1); 3199 if (put_user_u32(len, optlen)) { 3200 return -TARGET_EFAULT; 3201 } 3202 break; 3203 } 3204 /* Options with 'int' argument. */ 3205 case TARGET_SO_DEBUG: 3206 optname = SO_DEBUG; 3207 goto int_case; 3208 case TARGET_SO_REUSEADDR: 3209 optname = SO_REUSEADDR; 3210 goto int_case; 3211 case TARGET_SO_TYPE: 3212 optname = SO_TYPE; 3213 goto int_case; 3214 case TARGET_SO_ERROR: 3215 optname = SO_ERROR; 3216 goto int_case; 3217 case TARGET_SO_DONTROUTE: 3218 optname = SO_DONTROUTE; 3219 goto int_case; 3220 case TARGET_SO_BROADCAST: 3221 optname = SO_BROADCAST; 3222 goto int_case; 3223 case TARGET_SO_SNDBUF: 3224 optname = SO_SNDBUF; 3225 goto int_case; 3226 case TARGET_SO_RCVBUF: 3227 optname = SO_RCVBUF; 3228 goto int_case; 3229 case TARGET_SO_KEEPALIVE: 3230 optname = SO_KEEPALIVE; 3231 goto int_case; 3232 case TARGET_SO_OOBINLINE: 3233 optname = SO_OOBINLINE; 3234 goto int_case; 3235 case TARGET_SO_NO_CHECK: 3236 optname = SO_NO_CHECK; 3237 goto int_case; 3238 case TARGET_SO_PRIORITY: 3239 optname = SO_PRIORITY; 3240 goto int_case; 3241 #ifdef SO_BSDCOMPAT 3242 case TARGET_SO_BSDCOMPAT: 3243 optname = SO_BSDCOMPAT; 3244 goto int_case; 3245 #endif 3246 case TARGET_SO_PASSCRED: 3247 optname = SO_PASSCRED; 3248 goto int_case; 3249 case TARGET_SO_TIMESTAMP: 3250 optname = SO_TIMESTAMP; 3251 goto int_case; 3252 case TARGET_SO_RCVLOWAT: 3253 optname = SO_RCVLOWAT; 3254 goto int_case; 3255 case TARGET_SO_ACCEPTCONN: 3256 optname = SO_ACCEPTCONN; 3257 goto int_case; 3258 default: 3259 goto int_case; 3260 } 3261 break; 3262 case SOL_TCP: 3263 /* TCP options all take an 'int' value. */ 3264 int_case: 3265 if (get_user_u32(len, optlen)) 3266 return -TARGET_EFAULT; 3267 if (len < 0) 3268 return -TARGET_EINVAL; 3269 lv = sizeof(lv); 3270 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 3271 if (ret < 0) 3272 return ret; 3273 if (optname == SO_TYPE) { 3274 val = host_to_target_sock_type(val); 3275 } 3276 if (len > lv) 3277 len = lv; 3278 if (len == 4) { 3279 if (put_user_u32(val, optval_addr)) 3280 return -TARGET_EFAULT; 3281 } else { 3282 if (put_user_u8(val, optval_addr)) 3283 return -TARGET_EFAULT; 3284 } 3285 if (put_user_u32(len, optlen)) 3286 return -TARGET_EFAULT; 3287 break; 3288 case SOL_IP: 3289 switch(optname) { 3290 case IP_TOS: 3291 case IP_TTL: 3292 case IP_HDRINCL: 3293 case IP_ROUTER_ALERT: 3294 case IP_RECVOPTS: 3295 case IP_RETOPTS: 3296 case IP_PKTINFO: 3297 case IP_MTU_DISCOVER: 3298 case IP_RECVERR: 3299 case IP_RECVTOS: 3300 #ifdef IP_FREEBIND 3301 case IP_FREEBIND: 3302 #endif 3303 case IP_MULTICAST_TTL: 3304 case IP_MULTICAST_LOOP: 3305 if (get_user_u32(len, optlen)) 3306 return -TARGET_EFAULT; 3307 if (len < 0) 3308 return -TARGET_EINVAL; 3309 lv = sizeof(lv); 3310 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); 3311 if (ret < 0) 3312 return ret; 3313 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { 3314 len = 1; 3315 if (put_user_u32(len, optlen) 3316 || put_user_u8(val, optval_addr)) 3317 return -TARGET_EFAULT; 3318 } else { 3319 if (len > sizeof(int)) 3320 len = sizeof(int); 3321 if (put_user_u32(len, optlen) 3322 || put_user_u32(val, optval_addr)) 3323 return -TARGET_EFAULT; 3324 } 3325 break; 3326 default: 3327 ret = -TARGET_ENOPROTOOPT; 3328 break; 3329 } 3330 break; 3331 default: 3332 unimplemented: 3333 gemu_log("getsockopt level=%d optname=%d not yet supported\n", 3334 level, optname); 3335 ret = -TARGET_EOPNOTSUPP; 3336 break; 3337 } 3338 return ret; 3339 } 3340 3341 static struct iovec *lock_iovec(int type, abi_ulong target_addr, 3342 abi_ulong count, int copy) 3343 { 3344 struct target_iovec *target_vec; 3345 struct iovec *vec; 3346 abi_ulong total_len, max_len; 3347 int i; 3348 int err = 0; 3349 bool bad_address = false; 3350 3351 if (count == 0) { 3352 errno = 0; 3353 return NULL; 3354 } 3355 if (count > IOV_MAX) { 3356 errno = EINVAL; 3357 return NULL; 3358 } 3359 3360 vec = g_try_new0(struct iovec, count); 3361 if (vec == NULL) { 3362 errno = ENOMEM; 3363 return NULL; 3364 } 3365 3366 target_vec = lock_user(VERIFY_READ, target_addr, 3367 count * sizeof(struct target_iovec), 1); 3368 if (target_vec == NULL) { 3369 err = EFAULT; 3370 goto fail2; 3371 } 3372 3373 /* ??? If host page size > target page size, this will result in a 3374 value larger than what we can actually support. */ 3375 max_len = 0x7fffffff & TARGET_PAGE_MASK; 3376 total_len = 0; 3377 3378 for (i = 0; i < count; i++) { 3379 abi_ulong base = tswapal(target_vec[i].iov_base); 3380 abi_long len = tswapal(target_vec[i].iov_len); 3381 3382 if (len < 0) { 3383 err = EINVAL; 3384 goto fail; 3385 } else if (len == 0) { 3386 /* Zero length pointer is ignored. */ 3387 vec[i].iov_base = 0; 3388 } else { 3389 vec[i].iov_base = lock_user(type, base, len, copy); 3390 /* If the first buffer pointer is bad, this is a fault. But 3391 * subsequent bad buffers will result in a partial write; this 3392 * is realized by filling the vector with null pointers and 3393 * zero lengths. */ 3394 if (!vec[i].iov_base) { 3395 if (i == 0) { 3396 err = EFAULT; 3397 goto fail; 3398 } else { 3399 bad_address = true; 3400 } 3401 } 3402 if (bad_address) { 3403 len = 0; 3404 } 3405 if (len > max_len - total_len) { 3406 len = max_len - total_len; 3407 } 3408 } 3409 vec[i].iov_len = len; 3410 total_len += len; 3411 } 3412 3413 unlock_user(target_vec, target_addr, 0); 3414 return vec; 3415 3416 fail: 3417 while (--i >= 0) { 3418 if (tswapal(target_vec[i].iov_len) > 0) { 3419 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0); 3420 } 3421 } 3422 unlock_user(target_vec, target_addr, 0); 3423 fail2: 3424 g_free(vec); 3425 errno = err; 3426 return NULL; 3427 } 3428 3429 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr, 3430 abi_ulong count, int copy) 3431 { 3432 struct target_iovec *target_vec; 3433 int i; 3434 3435 target_vec = lock_user(VERIFY_READ, target_addr, 3436 count * sizeof(struct target_iovec), 1); 3437 if (target_vec) { 3438 for (i = 0; i < count; i++) { 3439 abi_ulong base = tswapal(target_vec[i].iov_base); 3440 abi_long len = tswapal(target_vec[i].iov_len); 3441 if (len < 0) { 3442 break; 3443 } 3444 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0); 3445 } 3446 unlock_user(target_vec, target_addr, 0); 3447 } 3448 3449 g_free(vec); 3450 } 3451 3452 static inline int target_to_host_sock_type(int *type) 3453 { 3454 int host_type = 0; 3455 int target_type = *type; 3456 3457 switch (target_type & TARGET_SOCK_TYPE_MASK) { 3458 case TARGET_SOCK_DGRAM: 3459 host_type = SOCK_DGRAM; 3460 break; 3461 case TARGET_SOCK_STREAM: 3462 host_type = SOCK_STREAM; 3463 break; 3464 default: 3465 host_type = target_type & TARGET_SOCK_TYPE_MASK; 3466 break; 3467 } 3468 if (target_type & TARGET_SOCK_CLOEXEC) { 3469 #if defined(SOCK_CLOEXEC) 3470 host_type |= SOCK_CLOEXEC; 3471 #else 3472 return -TARGET_EINVAL; 3473 #endif 3474 } 3475 if (target_type & TARGET_SOCK_NONBLOCK) { 3476 #if defined(SOCK_NONBLOCK) 3477 host_type |= SOCK_NONBLOCK; 3478 #elif !defined(O_NONBLOCK) 3479 return -TARGET_EINVAL; 3480 #endif 3481 } 3482 *type = host_type; 3483 return 0; 3484 } 3485 3486 /* Try to emulate socket type flags after socket creation. */ 3487 static int sock_flags_fixup(int fd, int target_type) 3488 { 3489 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK) 3490 if (target_type & TARGET_SOCK_NONBLOCK) { 3491 int flags = fcntl(fd, F_GETFL); 3492 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) { 3493 close(fd); 3494 return -TARGET_EINVAL; 3495 } 3496 } 3497 #endif 3498 return fd; 3499 } 3500 3501 static abi_long packet_target_to_host_sockaddr(void *host_addr, 3502 abi_ulong target_addr, 3503 socklen_t len) 3504 { 3505 struct sockaddr *addr = host_addr; 3506 struct target_sockaddr *target_saddr; 3507 3508 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1); 3509 if (!target_saddr) { 3510 return -TARGET_EFAULT; 3511 } 3512 3513 memcpy(addr, target_saddr, len); 3514 addr->sa_family = tswap16(target_saddr->sa_family); 3515 /* spkt_protocol is big-endian */ 3516 3517 unlock_user(target_saddr, target_addr, 0); 3518 return 0; 3519 } 3520 3521 static TargetFdTrans target_packet_trans = { 3522 .target_to_host_addr = packet_target_to_host_sockaddr, 3523 }; 3524 3525 #ifdef CONFIG_RTNETLINK 3526 static abi_long netlink_route_target_to_host(void *buf, size_t len) 3527 { 3528 abi_long ret; 3529 3530 ret = target_to_host_nlmsg_route(buf, len); 3531 if (ret < 0) { 3532 return ret; 3533 } 3534 3535 return len; 3536 } 3537 3538 static abi_long netlink_route_host_to_target(void *buf, size_t len) 3539 { 3540 abi_long ret; 3541 3542 ret = host_to_target_nlmsg_route(buf, len); 3543 if (ret < 0) { 3544 return ret; 3545 } 3546 3547 return len; 3548 } 3549 3550 static TargetFdTrans target_netlink_route_trans = { 3551 .target_to_host_data = netlink_route_target_to_host, 3552 .host_to_target_data = netlink_route_host_to_target, 3553 }; 3554 #endif /* CONFIG_RTNETLINK */ 3555 3556 static abi_long netlink_audit_target_to_host(void *buf, size_t len) 3557 { 3558 abi_long ret; 3559 3560 ret = target_to_host_nlmsg_audit(buf, len); 3561 if (ret < 0) { 3562 return ret; 3563 } 3564 3565 return len; 3566 } 3567 3568 static abi_long netlink_audit_host_to_target(void *buf, size_t len) 3569 { 3570 abi_long ret; 3571 3572 ret = host_to_target_nlmsg_audit(buf, len); 3573 if (ret < 0) { 3574 return ret; 3575 } 3576 3577 return len; 3578 } 3579 3580 static TargetFdTrans target_netlink_audit_trans = { 3581 .target_to_host_data = netlink_audit_target_to_host, 3582 .host_to_target_data = netlink_audit_host_to_target, 3583 }; 3584 3585 /* do_socket() Must return target values and target errnos. */ 3586 static abi_long do_socket(int domain, int type, int protocol) 3587 { 3588 int target_type = type; 3589 int ret; 3590 3591 ret = target_to_host_sock_type(&type); 3592 if (ret) { 3593 return ret; 3594 } 3595 3596 if (domain == PF_NETLINK && !( 3597 #ifdef CONFIG_RTNETLINK 3598 protocol == NETLINK_ROUTE || 3599 #endif 3600 protocol == NETLINK_KOBJECT_UEVENT || 3601 protocol == NETLINK_AUDIT)) { 3602 return -EPFNOSUPPORT; 3603 } 3604 3605 if (domain == AF_PACKET || 3606 (domain == AF_INET && type == SOCK_PACKET)) { 3607 protocol = tswap16(protocol); 3608 } 3609 3610 ret = get_errno(socket(domain, type, protocol)); 3611 if (ret >= 0) { 3612 ret = sock_flags_fixup(ret, target_type); 3613 if (type == SOCK_PACKET) { 3614 /* Manage an obsolete case : 3615 * if socket type is SOCK_PACKET, bind by name 3616 */ 3617 fd_trans_register(ret, &target_packet_trans); 3618 } else if (domain == PF_NETLINK) { 3619 switch (protocol) { 3620 #ifdef CONFIG_RTNETLINK 3621 case NETLINK_ROUTE: 3622 fd_trans_register(ret, &target_netlink_route_trans); 3623 break; 3624 #endif 3625 case NETLINK_KOBJECT_UEVENT: 3626 /* nothing to do: messages are strings */ 3627 break; 3628 case NETLINK_AUDIT: 3629 fd_trans_register(ret, &target_netlink_audit_trans); 3630 break; 3631 default: 3632 g_assert_not_reached(); 3633 } 3634 } 3635 } 3636 return ret; 3637 } 3638 3639 /* do_bind() Must return target values and target errnos. */ 3640 static abi_long do_bind(int sockfd, abi_ulong target_addr, 3641 socklen_t addrlen) 3642 { 3643 void *addr; 3644 abi_long ret; 3645 3646 if ((int)addrlen < 0) { 3647 return -TARGET_EINVAL; 3648 } 3649 3650 addr = alloca(addrlen+1); 3651 3652 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen); 3653 if (ret) 3654 return ret; 3655 3656 return get_errno(bind(sockfd, addr, addrlen)); 3657 } 3658 3659 /* do_connect() Must return target values and target errnos. */ 3660 static abi_long do_connect(int sockfd, abi_ulong target_addr, 3661 socklen_t addrlen) 3662 { 3663 void *addr; 3664 abi_long ret; 3665 3666 if ((int)addrlen < 0) { 3667 return -TARGET_EINVAL; 3668 } 3669 3670 addr = alloca(addrlen+1); 3671 3672 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen); 3673 if (ret) 3674 return ret; 3675 3676 return get_errno(safe_connect(sockfd, addr, addrlen)); 3677 } 3678 3679 /* do_sendrecvmsg_locked() Must return target values and target errnos. */ 3680 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp, 3681 int flags, int send) 3682 { 3683 abi_long ret, len; 3684 struct msghdr msg; 3685 abi_ulong count; 3686 struct iovec *vec; 3687 abi_ulong target_vec; 3688 3689 if (msgp->msg_name) { 3690 msg.msg_namelen = tswap32(msgp->msg_namelen); 3691 msg.msg_name = alloca(msg.msg_namelen+1); 3692 ret = target_to_host_sockaddr(fd, msg.msg_name, 3693 tswapal(msgp->msg_name), 3694 msg.msg_namelen); 3695 if (ret == -TARGET_EFAULT) { 3696 /* For connected sockets msg_name and msg_namelen must 3697 * be ignored, so returning EFAULT immediately is wrong. 3698 * Instead, pass a bad msg_name to the host kernel, and 3699 * let it decide whether to return EFAULT or not. 3700 */ 3701 msg.msg_name = (void *)-1; 3702 } else if (ret) { 3703 goto out2; 3704 } 3705 } else { 3706 msg.msg_name = NULL; 3707 msg.msg_namelen = 0; 3708 } 3709 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen); 3710 msg.msg_control = alloca(msg.msg_controllen); 3711 msg.msg_flags = tswap32(msgp->msg_flags); 3712 3713 count = tswapal(msgp->msg_iovlen); 3714 target_vec = tswapal(msgp->msg_iov); 3715 3716 if (count > IOV_MAX) { 3717 /* sendrcvmsg returns a different errno for this condition than 3718 * readv/writev, so we must catch it here before lock_iovec() does. 3719 */ 3720 ret = -TARGET_EMSGSIZE; 3721 goto out2; 3722 } 3723 3724 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE, 3725 target_vec, count, send); 3726 if (vec == NULL) { 3727 ret = -host_to_target_errno(errno); 3728 goto out2; 3729 } 3730 msg.msg_iovlen = count; 3731 msg.msg_iov = vec; 3732 3733 if (send) { 3734 if (fd_trans_target_to_host_data(fd)) { 3735 void *host_msg; 3736 3737 host_msg = g_malloc(msg.msg_iov->iov_len); 3738 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len); 3739 ret = fd_trans_target_to_host_data(fd)(host_msg, 3740 msg.msg_iov->iov_len); 3741 if (ret >= 0) { 3742 msg.msg_iov->iov_base = host_msg; 3743 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3744 } 3745 g_free(host_msg); 3746 } else { 3747 ret = target_to_host_cmsg(&msg, msgp); 3748 if (ret == 0) { 3749 ret = get_errno(safe_sendmsg(fd, &msg, flags)); 3750 } 3751 } 3752 } else { 3753 ret = get_errno(safe_recvmsg(fd, &msg, flags)); 3754 if (!is_error(ret)) { 3755 len = ret; 3756 if (fd_trans_host_to_target_data(fd)) { 3757 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base, 3758 len); 3759 } else { 3760 ret = host_to_target_cmsg(msgp, &msg); 3761 } 3762 if (!is_error(ret)) { 3763 msgp->msg_namelen = tswap32(msg.msg_namelen); 3764 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) { 3765 ret = host_to_target_sockaddr(tswapal(msgp->msg_name), 3766 msg.msg_name, msg.msg_namelen); 3767 if (ret) { 3768 goto out; 3769 } 3770 } 3771 3772 ret = len; 3773 } 3774 } 3775 } 3776 3777 out: 3778 unlock_iovec(vec, target_vec, count, !send); 3779 out2: 3780 return ret; 3781 } 3782 3783 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg, 3784 int flags, int send) 3785 { 3786 abi_long ret; 3787 struct target_msghdr *msgp; 3788 3789 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE, 3790 msgp, 3791 target_msg, 3792 send ? 1 : 0)) { 3793 return -TARGET_EFAULT; 3794 } 3795 ret = do_sendrecvmsg_locked(fd, msgp, flags, send); 3796 unlock_user_struct(msgp, target_msg, send ? 0 : 1); 3797 return ret; 3798 } 3799 3800 /* We don't rely on the C library to have sendmmsg/recvmmsg support, 3801 * so it might not have this *mmsg-specific flag either. 3802 */ 3803 #ifndef MSG_WAITFORONE 3804 #define MSG_WAITFORONE 0x10000 3805 #endif 3806 3807 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec, 3808 unsigned int vlen, unsigned int flags, 3809 int send) 3810 { 3811 struct target_mmsghdr *mmsgp; 3812 abi_long ret = 0; 3813 int i; 3814 3815 if (vlen > UIO_MAXIOV) { 3816 vlen = UIO_MAXIOV; 3817 } 3818 3819 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1); 3820 if (!mmsgp) { 3821 return -TARGET_EFAULT; 3822 } 3823 3824 for (i = 0; i < vlen; i++) { 3825 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send); 3826 if (is_error(ret)) { 3827 break; 3828 } 3829 mmsgp[i].msg_len = tswap32(ret); 3830 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */ 3831 if (flags & MSG_WAITFORONE) { 3832 flags |= MSG_DONTWAIT; 3833 } 3834 } 3835 3836 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i); 3837 3838 /* Return number of datagrams sent if we sent any at all; 3839 * otherwise return the error. 3840 */ 3841 if (i) { 3842 return i; 3843 } 3844 return ret; 3845 } 3846 3847 /* do_accept4() Must return target values and target errnos. */ 3848 static abi_long do_accept4(int fd, abi_ulong target_addr, 3849 abi_ulong target_addrlen_addr, int flags) 3850 { 3851 socklen_t addrlen; 3852 void *addr; 3853 abi_long ret; 3854 int host_flags; 3855 3856 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 3857 3858 if (target_addr == 0) { 3859 return get_errno(safe_accept4(fd, NULL, NULL, host_flags)); 3860 } 3861 3862 /* linux returns EINVAL if addrlen pointer is invalid */ 3863 if (get_user_u32(addrlen, target_addrlen_addr)) 3864 return -TARGET_EINVAL; 3865 3866 if ((int)addrlen < 0) { 3867 return -TARGET_EINVAL; 3868 } 3869 3870 if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) 3871 return -TARGET_EINVAL; 3872 3873 addr = alloca(addrlen); 3874 3875 ret = get_errno(safe_accept4(fd, addr, &addrlen, host_flags)); 3876 if (!is_error(ret)) { 3877 host_to_target_sockaddr(target_addr, addr, addrlen); 3878 if (put_user_u32(addrlen, target_addrlen_addr)) 3879 ret = -TARGET_EFAULT; 3880 } 3881 return ret; 3882 } 3883 3884 /* do_getpeername() Must return target values and target errnos. */ 3885 static abi_long do_getpeername(int fd, abi_ulong target_addr, 3886 abi_ulong target_addrlen_addr) 3887 { 3888 socklen_t addrlen; 3889 void *addr; 3890 abi_long ret; 3891 3892 if (get_user_u32(addrlen, target_addrlen_addr)) 3893 return -TARGET_EFAULT; 3894 3895 if ((int)addrlen < 0) { 3896 return -TARGET_EINVAL; 3897 } 3898 3899 if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) 3900 return -TARGET_EFAULT; 3901 3902 addr = alloca(addrlen); 3903 3904 ret = get_errno(getpeername(fd, addr, &addrlen)); 3905 if (!is_error(ret)) { 3906 host_to_target_sockaddr(target_addr, addr, addrlen); 3907 if (put_user_u32(addrlen, target_addrlen_addr)) 3908 ret = -TARGET_EFAULT; 3909 } 3910 return ret; 3911 } 3912 3913 /* do_getsockname() Must return target values and target errnos. */ 3914 static abi_long do_getsockname(int fd, abi_ulong target_addr, 3915 abi_ulong target_addrlen_addr) 3916 { 3917 socklen_t addrlen; 3918 void *addr; 3919 abi_long ret; 3920 3921 if (get_user_u32(addrlen, target_addrlen_addr)) 3922 return -TARGET_EFAULT; 3923 3924 if ((int)addrlen < 0) { 3925 return -TARGET_EINVAL; 3926 } 3927 3928 if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) 3929 return -TARGET_EFAULT; 3930 3931 addr = alloca(addrlen); 3932 3933 ret = get_errno(getsockname(fd, addr, &addrlen)); 3934 if (!is_error(ret)) { 3935 host_to_target_sockaddr(target_addr, addr, addrlen); 3936 if (put_user_u32(addrlen, target_addrlen_addr)) 3937 ret = -TARGET_EFAULT; 3938 } 3939 return ret; 3940 } 3941 3942 /* do_socketpair() Must return target values and target errnos. */ 3943 static abi_long do_socketpair(int domain, int type, int protocol, 3944 abi_ulong target_tab_addr) 3945 { 3946 int tab[2]; 3947 abi_long ret; 3948 3949 target_to_host_sock_type(&type); 3950 3951 ret = get_errno(socketpair(domain, type, protocol, tab)); 3952 if (!is_error(ret)) { 3953 if (put_user_s32(tab[0], target_tab_addr) 3954 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0]))) 3955 ret = -TARGET_EFAULT; 3956 } 3957 return ret; 3958 } 3959 3960 /* do_sendto() Must return target values and target errnos. */ 3961 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags, 3962 abi_ulong target_addr, socklen_t addrlen) 3963 { 3964 void *addr; 3965 void *host_msg; 3966 void *copy_msg = NULL; 3967 abi_long ret; 3968 3969 if ((int)addrlen < 0) { 3970 return -TARGET_EINVAL; 3971 } 3972 3973 host_msg = lock_user(VERIFY_READ, msg, len, 1); 3974 if (!host_msg) 3975 return -TARGET_EFAULT; 3976 if (fd_trans_target_to_host_data(fd)) { 3977 copy_msg = host_msg; 3978 host_msg = g_malloc(len); 3979 memcpy(host_msg, copy_msg, len); 3980 ret = fd_trans_target_to_host_data(fd)(host_msg, len); 3981 if (ret < 0) { 3982 goto fail; 3983 } 3984 } 3985 if (target_addr) { 3986 addr = alloca(addrlen+1); 3987 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen); 3988 if (ret) { 3989 goto fail; 3990 } 3991 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen)); 3992 } else { 3993 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0)); 3994 } 3995 fail: 3996 if (copy_msg) { 3997 g_free(host_msg); 3998 host_msg = copy_msg; 3999 } 4000 unlock_user(host_msg, msg, 0); 4001 return ret; 4002 } 4003 4004 /* do_recvfrom() Must return target values and target errnos. */ 4005 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags, 4006 abi_ulong target_addr, 4007 abi_ulong target_addrlen) 4008 { 4009 socklen_t addrlen; 4010 void *addr; 4011 void *host_msg; 4012 abi_long ret; 4013 4014 host_msg = lock_user(VERIFY_WRITE, msg, len, 0); 4015 if (!host_msg) 4016 return -TARGET_EFAULT; 4017 if (target_addr) { 4018 if (get_user_u32(addrlen, target_addrlen)) { 4019 ret = -TARGET_EFAULT; 4020 goto fail; 4021 } 4022 if ((int)addrlen < 0) { 4023 ret = -TARGET_EINVAL; 4024 goto fail; 4025 } 4026 addr = alloca(addrlen); 4027 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, 4028 addr, &addrlen)); 4029 } else { 4030 addr = NULL; /* To keep compiler quiet. */ 4031 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0)); 4032 } 4033 if (!is_error(ret)) { 4034 if (fd_trans_host_to_target_data(fd)) { 4035 ret = fd_trans_host_to_target_data(fd)(host_msg, ret); 4036 } 4037 if (target_addr) { 4038 host_to_target_sockaddr(target_addr, addr, addrlen); 4039 if (put_user_u32(addrlen, target_addrlen)) { 4040 ret = -TARGET_EFAULT; 4041 goto fail; 4042 } 4043 } 4044 unlock_user(host_msg, msg, len); 4045 } else { 4046 fail: 4047 unlock_user(host_msg, msg, 0); 4048 } 4049 return ret; 4050 } 4051 4052 #ifdef TARGET_NR_socketcall 4053 /* do_socketcall() must return target values and target errnos. */ 4054 static abi_long do_socketcall(int num, abi_ulong vptr) 4055 { 4056 static const unsigned nargs[] = { /* number of arguments per operation */ 4057 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */ 4058 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */ 4059 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */ 4060 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */ 4061 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */ 4062 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */ 4063 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */ 4064 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */ 4065 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */ 4066 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */ 4067 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */ 4068 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */ 4069 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */ 4070 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 4071 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */ 4072 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */ 4073 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */ 4074 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */ 4075 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */ 4076 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */ 4077 }; 4078 abi_long a[6]; /* max 6 args */ 4079 unsigned i; 4080 4081 /* check the range of the first argument num */ 4082 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */ 4083 if (num < 1 || num > TARGET_SYS_SENDMMSG) { 4084 return -TARGET_EINVAL; 4085 } 4086 /* ensure we have space for args */ 4087 if (nargs[num] > ARRAY_SIZE(a)) { 4088 return -TARGET_EINVAL; 4089 } 4090 /* collect the arguments in a[] according to nargs[] */ 4091 for (i = 0; i < nargs[num]; ++i) { 4092 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) { 4093 return -TARGET_EFAULT; 4094 } 4095 } 4096 /* now when we have the args, invoke the appropriate underlying function */ 4097 switch (num) { 4098 case TARGET_SYS_SOCKET: /* domain, type, protocol */ 4099 return do_socket(a[0], a[1], a[2]); 4100 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */ 4101 return do_bind(a[0], a[1], a[2]); 4102 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */ 4103 return do_connect(a[0], a[1], a[2]); 4104 case TARGET_SYS_LISTEN: /* sockfd, backlog */ 4105 return get_errno(listen(a[0], a[1])); 4106 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */ 4107 return do_accept4(a[0], a[1], a[2], 0); 4108 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */ 4109 return do_getsockname(a[0], a[1], a[2]); 4110 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */ 4111 return do_getpeername(a[0], a[1], a[2]); 4112 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */ 4113 return do_socketpair(a[0], a[1], a[2], a[3]); 4114 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */ 4115 return do_sendto(a[0], a[1], a[2], a[3], 0, 0); 4116 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */ 4117 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0); 4118 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */ 4119 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]); 4120 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */ 4121 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]); 4122 case TARGET_SYS_SHUTDOWN: /* sockfd, how */ 4123 return get_errno(shutdown(a[0], a[1])); 4124 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 4125 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]); 4126 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */ 4127 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]); 4128 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */ 4129 return do_sendrecvmsg(a[0], a[1], a[2], 1); 4130 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */ 4131 return do_sendrecvmsg(a[0], a[1], a[2], 0); 4132 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */ 4133 return do_accept4(a[0], a[1], a[2], a[3]); 4134 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */ 4135 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0); 4136 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */ 4137 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1); 4138 default: 4139 gemu_log("Unsupported socketcall: %d\n", num); 4140 return -TARGET_EINVAL; 4141 } 4142 } 4143 #endif 4144 4145 #define N_SHM_REGIONS 32 4146 4147 static struct shm_region { 4148 abi_ulong start; 4149 abi_ulong size; 4150 bool in_use; 4151 } shm_regions[N_SHM_REGIONS]; 4152 4153 #ifndef TARGET_SEMID64_DS 4154 /* asm-generic version of this struct */ 4155 struct target_semid64_ds 4156 { 4157 struct target_ipc_perm sem_perm; 4158 abi_ulong sem_otime; 4159 #if TARGET_ABI_BITS == 32 4160 abi_ulong __unused1; 4161 #endif 4162 abi_ulong sem_ctime; 4163 #if TARGET_ABI_BITS == 32 4164 abi_ulong __unused2; 4165 #endif 4166 abi_ulong sem_nsems; 4167 abi_ulong __unused3; 4168 abi_ulong __unused4; 4169 }; 4170 #endif 4171 4172 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip, 4173 abi_ulong target_addr) 4174 { 4175 struct target_ipc_perm *target_ip; 4176 struct target_semid64_ds *target_sd; 4177 4178 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 4179 return -TARGET_EFAULT; 4180 target_ip = &(target_sd->sem_perm); 4181 host_ip->__key = tswap32(target_ip->__key); 4182 host_ip->uid = tswap32(target_ip->uid); 4183 host_ip->gid = tswap32(target_ip->gid); 4184 host_ip->cuid = tswap32(target_ip->cuid); 4185 host_ip->cgid = tswap32(target_ip->cgid); 4186 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 4187 host_ip->mode = tswap32(target_ip->mode); 4188 #else 4189 host_ip->mode = tswap16(target_ip->mode); 4190 #endif 4191 #if defined(TARGET_PPC) 4192 host_ip->__seq = tswap32(target_ip->__seq); 4193 #else 4194 host_ip->__seq = tswap16(target_ip->__seq); 4195 #endif 4196 unlock_user_struct(target_sd, target_addr, 0); 4197 return 0; 4198 } 4199 4200 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr, 4201 struct ipc_perm *host_ip) 4202 { 4203 struct target_ipc_perm *target_ip; 4204 struct target_semid64_ds *target_sd; 4205 4206 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 4207 return -TARGET_EFAULT; 4208 target_ip = &(target_sd->sem_perm); 4209 target_ip->__key = tswap32(host_ip->__key); 4210 target_ip->uid = tswap32(host_ip->uid); 4211 target_ip->gid = tswap32(host_ip->gid); 4212 target_ip->cuid = tswap32(host_ip->cuid); 4213 target_ip->cgid = tswap32(host_ip->cgid); 4214 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) 4215 target_ip->mode = tswap32(host_ip->mode); 4216 #else 4217 target_ip->mode = tswap16(host_ip->mode); 4218 #endif 4219 #if defined(TARGET_PPC) 4220 target_ip->__seq = tswap32(host_ip->__seq); 4221 #else 4222 target_ip->__seq = tswap16(host_ip->__seq); 4223 #endif 4224 unlock_user_struct(target_sd, target_addr, 1); 4225 return 0; 4226 } 4227 4228 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd, 4229 abi_ulong target_addr) 4230 { 4231 struct target_semid64_ds *target_sd; 4232 4233 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 4234 return -TARGET_EFAULT; 4235 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr)) 4236 return -TARGET_EFAULT; 4237 host_sd->sem_nsems = tswapal(target_sd->sem_nsems); 4238 host_sd->sem_otime = tswapal(target_sd->sem_otime); 4239 host_sd->sem_ctime = tswapal(target_sd->sem_ctime); 4240 unlock_user_struct(target_sd, target_addr, 0); 4241 return 0; 4242 } 4243 4244 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr, 4245 struct semid_ds *host_sd) 4246 { 4247 struct target_semid64_ds *target_sd; 4248 4249 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 4250 return -TARGET_EFAULT; 4251 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm))) 4252 return -TARGET_EFAULT; 4253 target_sd->sem_nsems = tswapal(host_sd->sem_nsems); 4254 target_sd->sem_otime = tswapal(host_sd->sem_otime); 4255 target_sd->sem_ctime = tswapal(host_sd->sem_ctime); 4256 unlock_user_struct(target_sd, target_addr, 1); 4257 return 0; 4258 } 4259 4260 struct target_seminfo { 4261 int semmap; 4262 int semmni; 4263 int semmns; 4264 int semmnu; 4265 int semmsl; 4266 int semopm; 4267 int semume; 4268 int semusz; 4269 int semvmx; 4270 int semaem; 4271 }; 4272 4273 static inline abi_long host_to_target_seminfo(abi_ulong target_addr, 4274 struct seminfo *host_seminfo) 4275 { 4276 struct target_seminfo *target_seminfo; 4277 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0)) 4278 return -TARGET_EFAULT; 4279 __put_user(host_seminfo->semmap, &target_seminfo->semmap); 4280 __put_user(host_seminfo->semmni, &target_seminfo->semmni); 4281 __put_user(host_seminfo->semmns, &target_seminfo->semmns); 4282 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu); 4283 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl); 4284 __put_user(host_seminfo->semopm, &target_seminfo->semopm); 4285 __put_user(host_seminfo->semume, &target_seminfo->semume); 4286 __put_user(host_seminfo->semusz, &target_seminfo->semusz); 4287 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx); 4288 __put_user(host_seminfo->semaem, &target_seminfo->semaem); 4289 unlock_user_struct(target_seminfo, target_addr, 1); 4290 return 0; 4291 } 4292 4293 union semun { 4294 int val; 4295 struct semid_ds *buf; 4296 unsigned short *array; 4297 struct seminfo *__buf; 4298 }; 4299 4300 union target_semun { 4301 int val; 4302 abi_ulong buf; 4303 abi_ulong array; 4304 abi_ulong __buf; 4305 }; 4306 4307 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array, 4308 abi_ulong target_addr) 4309 { 4310 int nsems; 4311 unsigned short *array; 4312 union semun semun; 4313 struct semid_ds semid_ds; 4314 int i, ret; 4315 4316 semun.buf = &semid_ds; 4317 4318 ret = semctl(semid, 0, IPC_STAT, semun); 4319 if (ret == -1) 4320 return get_errno(ret); 4321 4322 nsems = semid_ds.sem_nsems; 4323 4324 *host_array = g_try_new(unsigned short, nsems); 4325 if (!*host_array) { 4326 return -TARGET_ENOMEM; 4327 } 4328 array = lock_user(VERIFY_READ, target_addr, 4329 nsems*sizeof(unsigned short), 1); 4330 if (!array) { 4331 g_free(*host_array); 4332 return -TARGET_EFAULT; 4333 } 4334 4335 for(i=0; i<nsems; i++) { 4336 __get_user((*host_array)[i], &array[i]); 4337 } 4338 unlock_user(array, target_addr, 0); 4339 4340 return 0; 4341 } 4342 4343 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr, 4344 unsigned short **host_array) 4345 { 4346 int nsems; 4347 unsigned short *array; 4348 union semun semun; 4349 struct semid_ds semid_ds; 4350 int i, ret; 4351 4352 semun.buf = &semid_ds; 4353 4354 ret = semctl(semid, 0, IPC_STAT, semun); 4355 if (ret == -1) 4356 return get_errno(ret); 4357 4358 nsems = semid_ds.sem_nsems; 4359 4360 array = lock_user(VERIFY_WRITE, target_addr, 4361 nsems*sizeof(unsigned short), 0); 4362 if (!array) 4363 return -TARGET_EFAULT; 4364 4365 for(i=0; i<nsems; i++) { 4366 __put_user((*host_array)[i], &array[i]); 4367 } 4368 g_free(*host_array); 4369 unlock_user(array, target_addr, 1); 4370 4371 return 0; 4372 } 4373 4374 static inline abi_long do_semctl(int semid, int semnum, int cmd, 4375 abi_ulong target_arg) 4376 { 4377 union target_semun target_su = { .buf = target_arg }; 4378 union semun arg; 4379 struct semid_ds dsarg; 4380 unsigned short *array = NULL; 4381 struct seminfo seminfo; 4382 abi_long ret = -TARGET_EINVAL; 4383 abi_long err; 4384 cmd &= 0xff; 4385 4386 switch( cmd ) { 4387 case GETVAL: 4388 case SETVAL: 4389 /* In 64 bit cross-endian situations, we will erroneously pick up 4390 * the wrong half of the union for the "val" element. To rectify 4391 * this, the entire 8-byte structure is byteswapped, followed by 4392 * a swap of the 4 byte val field. In other cases, the data is 4393 * already in proper host byte order. */ 4394 if (sizeof(target_su.val) != (sizeof(target_su.buf))) { 4395 target_su.buf = tswapal(target_su.buf); 4396 arg.val = tswap32(target_su.val); 4397 } else { 4398 arg.val = target_su.val; 4399 } 4400 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4401 break; 4402 case GETALL: 4403 case SETALL: 4404 err = target_to_host_semarray(semid, &array, target_su.array); 4405 if (err) 4406 return err; 4407 arg.array = array; 4408 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4409 err = host_to_target_semarray(semid, target_su.array, &array); 4410 if (err) 4411 return err; 4412 break; 4413 case IPC_STAT: 4414 case IPC_SET: 4415 case SEM_STAT: 4416 err = target_to_host_semid_ds(&dsarg, target_su.buf); 4417 if (err) 4418 return err; 4419 arg.buf = &dsarg; 4420 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4421 err = host_to_target_semid_ds(target_su.buf, &dsarg); 4422 if (err) 4423 return err; 4424 break; 4425 case IPC_INFO: 4426 case SEM_INFO: 4427 arg.__buf = &seminfo; 4428 ret = get_errno(semctl(semid, semnum, cmd, arg)); 4429 err = host_to_target_seminfo(target_su.__buf, &seminfo); 4430 if (err) 4431 return err; 4432 break; 4433 case IPC_RMID: 4434 case GETPID: 4435 case GETNCNT: 4436 case GETZCNT: 4437 ret = get_errno(semctl(semid, semnum, cmd, NULL)); 4438 break; 4439 } 4440 4441 return ret; 4442 } 4443 4444 struct target_sembuf { 4445 unsigned short sem_num; 4446 short sem_op; 4447 short sem_flg; 4448 }; 4449 4450 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf, 4451 abi_ulong target_addr, 4452 unsigned nsops) 4453 { 4454 struct target_sembuf *target_sembuf; 4455 int i; 4456 4457 target_sembuf = lock_user(VERIFY_READ, target_addr, 4458 nsops*sizeof(struct target_sembuf), 1); 4459 if (!target_sembuf) 4460 return -TARGET_EFAULT; 4461 4462 for(i=0; i<nsops; i++) { 4463 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num); 4464 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op); 4465 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg); 4466 } 4467 4468 unlock_user(target_sembuf, target_addr, 0); 4469 4470 return 0; 4471 } 4472 4473 static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops) 4474 { 4475 struct sembuf sops[nsops]; 4476 4477 if (target_to_host_sembuf(sops, ptr, nsops)) 4478 return -TARGET_EFAULT; 4479 4480 return get_errno(safe_semtimedop(semid, sops, nsops, NULL)); 4481 } 4482 4483 struct target_msqid_ds 4484 { 4485 struct target_ipc_perm msg_perm; 4486 abi_ulong msg_stime; 4487 #if TARGET_ABI_BITS == 32 4488 abi_ulong __unused1; 4489 #endif 4490 abi_ulong msg_rtime; 4491 #if TARGET_ABI_BITS == 32 4492 abi_ulong __unused2; 4493 #endif 4494 abi_ulong msg_ctime; 4495 #if TARGET_ABI_BITS == 32 4496 abi_ulong __unused3; 4497 #endif 4498 abi_ulong __msg_cbytes; 4499 abi_ulong msg_qnum; 4500 abi_ulong msg_qbytes; 4501 abi_ulong msg_lspid; 4502 abi_ulong msg_lrpid; 4503 abi_ulong __unused4; 4504 abi_ulong __unused5; 4505 }; 4506 4507 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md, 4508 abi_ulong target_addr) 4509 { 4510 struct target_msqid_ds *target_md; 4511 4512 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1)) 4513 return -TARGET_EFAULT; 4514 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr)) 4515 return -TARGET_EFAULT; 4516 host_md->msg_stime = tswapal(target_md->msg_stime); 4517 host_md->msg_rtime = tswapal(target_md->msg_rtime); 4518 host_md->msg_ctime = tswapal(target_md->msg_ctime); 4519 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes); 4520 host_md->msg_qnum = tswapal(target_md->msg_qnum); 4521 host_md->msg_qbytes = tswapal(target_md->msg_qbytes); 4522 host_md->msg_lspid = tswapal(target_md->msg_lspid); 4523 host_md->msg_lrpid = tswapal(target_md->msg_lrpid); 4524 unlock_user_struct(target_md, target_addr, 0); 4525 return 0; 4526 } 4527 4528 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr, 4529 struct msqid_ds *host_md) 4530 { 4531 struct target_msqid_ds *target_md; 4532 4533 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0)) 4534 return -TARGET_EFAULT; 4535 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm))) 4536 return -TARGET_EFAULT; 4537 target_md->msg_stime = tswapal(host_md->msg_stime); 4538 target_md->msg_rtime = tswapal(host_md->msg_rtime); 4539 target_md->msg_ctime = tswapal(host_md->msg_ctime); 4540 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes); 4541 target_md->msg_qnum = tswapal(host_md->msg_qnum); 4542 target_md->msg_qbytes = tswapal(host_md->msg_qbytes); 4543 target_md->msg_lspid = tswapal(host_md->msg_lspid); 4544 target_md->msg_lrpid = tswapal(host_md->msg_lrpid); 4545 unlock_user_struct(target_md, target_addr, 1); 4546 return 0; 4547 } 4548 4549 struct target_msginfo { 4550 int msgpool; 4551 int msgmap; 4552 int msgmax; 4553 int msgmnb; 4554 int msgmni; 4555 int msgssz; 4556 int msgtql; 4557 unsigned short int msgseg; 4558 }; 4559 4560 static inline abi_long host_to_target_msginfo(abi_ulong target_addr, 4561 struct msginfo *host_msginfo) 4562 { 4563 struct target_msginfo *target_msginfo; 4564 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0)) 4565 return -TARGET_EFAULT; 4566 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool); 4567 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap); 4568 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax); 4569 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb); 4570 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni); 4571 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz); 4572 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql); 4573 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg); 4574 unlock_user_struct(target_msginfo, target_addr, 1); 4575 return 0; 4576 } 4577 4578 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr) 4579 { 4580 struct msqid_ds dsarg; 4581 struct msginfo msginfo; 4582 abi_long ret = -TARGET_EINVAL; 4583 4584 cmd &= 0xff; 4585 4586 switch (cmd) { 4587 case IPC_STAT: 4588 case IPC_SET: 4589 case MSG_STAT: 4590 if (target_to_host_msqid_ds(&dsarg,ptr)) 4591 return -TARGET_EFAULT; 4592 ret = get_errno(msgctl(msgid, cmd, &dsarg)); 4593 if (host_to_target_msqid_ds(ptr,&dsarg)) 4594 return -TARGET_EFAULT; 4595 break; 4596 case IPC_RMID: 4597 ret = get_errno(msgctl(msgid, cmd, NULL)); 4598 break; 4599 case IPC_INFO: 4600 case MSG_INFO: 4601 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo)); 4602 if (host_to_target_msginfo(ptr, &msginfo)) 4603 return -TARGET_EFAULT; 4604 break; 4605 } 4606 4607 return ret; 4608 } 4609 4610 struct target_msgbuf { 4611 abi_long mtype; 4612 char mtext[1]; 4613 }; 4614 4615 static inline abi_long do_msgsnd(int msqid, abi_long msgp, 4616 ssize_t msgsz, int msgflg) 4617 { 4618 struct target_msgbuf *target_mb; 4619 struct msgbuf *host_mb; 4620 abi_long ret = 0; 4621 4622 if (msgsz < 0) { 4623 return -TARGET_EINVAL; 4624 } 4625 4626 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0)) 4627 return -TARGET_EFAULT; 4628 host_mb = g_try_malloc(msgsz + sizeof(long)); 4629 if (!host_mb) { 4630 unlock_user_struct(target_mb, msgp, 0); 4631 return -TARGET_ENOMEM; 4632 } 4633 host_mb->mtype = (abi_long) tswapal(target_mb->mtype); 4634 memcpy(host_mb->mtext, target_mb->mtext, msgsz); 4635 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg)); 4636 g_free(host_mb); 4637 unlock_user_struct(target_mb, msgp, 0); 4638 4639 return ret; 4640 } 4641 4642 static inline abi_long do_msgrcv(int msqid, abi_long msgp, 4643 ssize_t msgsz, abi_long msgtyp, 4644 int msgflg) 4645 { 4646 struct target_msgbuf *target_mb; 4647 char *target_mtext; 4648 struct msgbuf *host_mb; 4649 abi_long ret = 0; 4650 4651 if (msgsz < 0) { 4652 return -TARGET_EINVAL; 4653 } 4654 4655 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0)) 4656 return -TARGET_EFAULT; 4657 4658 host_mb = g_try_malloc(msgsz + sizeof(long)); 4659 if (!host_mb) { 4660 ret = -TARGET_ENOMEM; 4661 goto end; 4662 } 4663 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg)); 4664 4665 if (ret > 0) { 4666 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong); 4667 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0); 4668 if (!target_mtext) { 4669 ret = -TARGET_EFAULT; 4670 goto end; 4671 } 4672 memcpy(target_mb->mtext, host_mb->mtext, ret); 4673 unlock_user(target_mtext, target_mtext_addr, ret); 4674 } 4675 4676 target_mb->mtype = tswapal(host_mb->mtype); 4677 4678 end: 4679 if (target_mb) 4680 unlock_user_struct(target_mb, msgp, 1); 4681 g_free(host_mb); 4682 return ret; 4683 } 4684 4685 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd, 4686 abi_ulong target_addr) 4687 { 4688 struct target_shmid_ds *target_sd; 4689 4690 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) 4691 return -TARGET_EFAULT; 4692 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr)) 4693 return -TARGET_EFAULT; 4694 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4695 __get_user(host_sd->shm_atime, &target_sd->shm_atime); 4696 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4697 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4698 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4699 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4700 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4701 unlock_user_struct(target_sd, target_addr, 0); 4702 return 0; 4703 } 4704 4705 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr, 4706 struct shmid_ds *host_sd) 4707 { 4708 struct target_shmid_ds *target_sd; 4709 4710 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) 4711 return -TARGET_EFAULT; 4712 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm))) 4713 return -TARGET_EFAULT; 4714 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz); 4715 __put_user(host_sd->shm_atime, &target_sd->shm_atime); 4716 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime); 4717 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime); 4718 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid); 4719 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid); 4720 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch); 4721 unlock_user_struct(target_sd, target_addr, 1); 4722 return 0; 4723 } 4724 4725 struct target_shminfo { 4726 abi_ulong shmmax; 4727 abi_ulong shmmin; 4728 abi_ulong shmmni; 4729 abi_ulong shmseg; 4730 abi_ulong shmall; 4731 }; 4732 4733 static inline abi_long host_to_target_shminfo(abi_ulong target_addr, 4734 struct shminfo *host_shminfo) 4735 { 4736 struct target_shminfo *target_shminfo; 4737 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0)) 4738 return -TARGET_EFAULT; 4739 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax); 4740 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin); 4741 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni); 4742 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg); 4743 __put_user(host_shminfo->shmall, &target_shminfo->shmall); 4744 unlock_user_struct(target_shminfo, target_addr, 1); 4745 return 0; 4746 } 4747 4748 struct target_shm_info { 4749 int used_ids; 4750 abi_ulong shm_tot; 4751 abi_ulong shm_rss; 4752 abi_ulong shm_swp; 4753 abi_ulong swap_attempts; 4754 abi_ulong swap_successes; 4755 }; 4756 4757 static inline abi_long host_to_target_shm_info(abi_ulong target_addr, 4758 struct shm_info *host_shm_info) 4759 { 4760 struct target_shm_info *target_shm_info; 4761 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0)) 4762 return -TARGET_EFAULT; 4763 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids); 4764 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot); 4765 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss); 4766 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp); 4767 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts); 4768 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes); 4769 unlock_user_struct(target_shm_info, target_addr, 1); 4770 return 0; 4771 } 4772 4773 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf) 4774 { 4775 struct shmid_ds dsarg; 4776 struct shminfo shminfo; 4777 struct shm_info shm_info; 4778 abi_long ret = -TARGET_EINVAL; 4779 4780 cmd &= 0xff; 4781 4782 switch(cmd) { 4783 case IPC_STAT: 4784 case IPC_SET: 4785 case SHM_STAT: 4786 if (target_to_host_shmid_ds(&dsarg, buf)) 4787 return -TARGET_EFAULT; 4788 ret = get_errno(shmctl(shmid, cmd, &dsarg)); 4789 if (host_to_target_shmid_ds(buf, &dsarg)) 4790 return -TARGET_EFAULT; 4791 break; 4792 case IPC_INFO: 4793 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo)); 4794 if (host_to_target_shminfo(buf, &shminfo)) 4795 return -TARGET_EFAULT; 4796 break; 4797 case SHM_INFO: 4798 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info)); 4799 if (host_to_target_shm_info(buf, &shm_info)) 4800 return -TARGET_EFAULT; 4801 break; 4802 case IPC_RMID: 4803 case SHM_LOCK: 4804 case SHM_UNLOCK: 4805 ret = get_errno(shmctl(shmid, cmd, NULL)); 4806 break; 4807 } 4808 4809 return ret; 4810 } 4811 4812 #ifndef TARGET_FORCE_SHMLBA 4813 /* For most architectures, SHMLBA is the same as the page size; 4814 * some architectures have larger values, in which case they should 4815 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function. 4816 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA 4817 * and defining its own value for SHMLBA. 4818 * 4819 * The kernel also permits SHMLBA to be set by the architecture to a 4820 * value larger than the page size without setting __ARCH_FORCE_SHMLBA; 4821 * this means that addresses are rounded to the large size if 4822 * SHM_RND is set but addresses not aligned to that size are not rejected 4823 * as long as they are at least page-aligned. Since the only architecture 4824 * which uses this is ia64 this code doesn't provide for that oddity. 4825 */ 4826 static inline abi_ulong target_shmlba(CPUArchState *cpu_env) 4827 { 4828 return TARGET_PAGE_SIZE; 4829 } 4830 #endif 4831 4832 static inline abi_ulong do_shmat(CPUArchState *cpu_env, 4833 int shmid, abi_ulong shmaddr, int shmflg) 4834 { 4835 abi_long raddr; 4836 void *host_raddr; 4837 struct shmid_ds shm_info; 4838 int i,ret; 4839 abi_ulong shmlba; 4840 4841 /* find out the length of the shared memory segment */ 4842 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info)); 4843 if (is_error(ret)) { 4844 /* can't get length, bail out */ 4845 return ret; 4846 } 4847 4848 shmlba = target_shmlba(cpu_env); 4849 4850 if (shmaddr & (shmlba - 1)) { 4851 if (shmflg & SHM_RND) { 4852 shmaddr &= ~(shmlba - 1); 4853 } else { 4854 return -TARGET_EINVAL; 4855 } 4856 } 4857 4858 mmap_lock(); 4859 4860 if (shmaddr) 4861 host_raddr = shmat(shmid, (void *)g2h(shmaddr), shmflg); 4862 else { 4863 abi_ulong mmap_start; 4864 4865 mmap_start = mmap_find_vma(0, shm_info.shm_segsz); 4866 4867 if (mmap_start == -1) { 4868 errno = ENOMEM; 4869 host_raddr = (void *)-1; 4870 } else 4871 host_raddr = shmat(shmid, g2h(mmap_start), shmflg | SHM_REMAP); 4872 } 4873 4874 if (host_raddr == (void *)-1) { 4875 mmap_unlock(); 4876 return get_errno((long)host_raddr); 4877 } 4878 raddr=h2g((unsigned long)host_raddr); 4879 4880 page_set_flags(raddr, raddr + shm_info.shm_segsz, 4881 PAGE_VALID | PAGE_READ | 4882 ((shmflg & SHM_RDONLY)? 0 : PAGE_WRITE)); 4883 4884 for (i = 0; i < N_SHM_REGIONS; i++) { 4885 if (!shm_regions[i].in_use) { 4886 shm_regions[i].in_use = true; 4887 shm_regions[i].start = raddr; 4888 shm_regions[i].size = shm_info.shm_segsz; 4889 break; 4890 } 4891 } 4892 4893 mmap_unlock(); 4894 return raddr; 4895 4896 } 4897 4898 static inline abi_long do_shmdt(abi_ulong shmaddr) 4899 { 4900 int i; 4901 4902 for (i = 0; i < N_SHM_REGIONS; ++i) { 4903 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) { 4904 shm_regions[i].in_use = false; 4905 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0); 4906 break; 4907 } 4908 } 4909 4910 return get_errno(shmdt(g2h(shmaddr))); 4911 } 4912 4913 #ifdef TARGET_NR_ipc 4914 /* ??? This only works with linear mappings. */ 4915 /* do_ipc() must return target values and target errnos. */ 4916 static abi_long do_ipc(CPUArchState *cpu_env, 4917 unsigned int call, abi_long first, 4918 abi_long second, abi_long third, 4919 abi_long ptr, abi_long fifth) 4920 { 4921 int version; 4922 abi_long ret = 0; 4923 4924 version = call >> 16; 4925 call &= 0xffff; 4926 4927 switch (call) { 4928 case IPCOP_semop: 4929 ret = do_semop(first, ptr, second); 4930 break; 4931 4932 case IPCOP_semget: 4933 ret = get_errno(semget(first, second, third)); 4934 break; 4935 4936 case IPCOP_semctl: { 4937 /* The semun argument to semctl is passed by value, so dereference the 4938 * ptr argument. */ 4939 abi_ulong atptr; 4940 get_user_ual(atptr, ptr); 4941 ret = do_semctl(first, second, third, atptr); 4942 break; 4943 } 4944 4945 case IPCOP_msgget: 4946 ret = get_errno(msgget(first, second)); 4947 break; 4948 4949 case IPCOP_msgsnd: 4950 ret = do_msgsnd(first, ptr, second, third); 4951 break; 4952 4953 case IPCOP_msgctl: 4954 ret = do_msgctl(first, second, ptr); 4955 break; 4956 4957 case IPCOP_msgrcv: 4958 switch (version) { 4959 case 0: 4960 { 4961 struct target_ipc_kludge { 4962 abi_long msgp; 4963 abi_long msgtyp; 4964 } *tmp; 4965 4966 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) { 4967 ret = -TARGET_EFAULT; 4968 break; 4969 } 4970 4971 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third); 4972 4973 unlock_user_struct(tmp, ptr, 0); 4974 break; 4975 } 4976 default: 4977 ret = do_msgrcv(first, ptr, second, fifth, third); 4978 } 4979 break; 4980 4981 case IPCOP_shmat: 4982 switch (version) { 4983 default: 4984 { 4985 abi_ulong raddr; 4986 raddr = do_shmat(cpu_env, first, ptr, second); 4987 if (is_error(raddr)) 4988 return get_errno(raddr); 4989 if (put_user_ual(raddr, third)) 4990 return -TARGET_EFAULT; 4991 break; 4992 } 4993 case 1: 4994 ret = -TARGET_EINVAL; 4995 break; 4996 } 4997 break; 4998 case IPCOP_shmdt: 4999 ret = do_shmdt(ptr); 5000 break; 5001 5002 case IPCOP_shmget: 5003 /* IPC_* flag values are the same on all linux platforms */ 5004 ret = get_errno(shmget(first, second, third)); 5005 break; 5006 5007 /* IPC_* and SHM_* command values are the same on all linux platforms */ 5008 case IPCOP_shmctl: 5009 ret = do_shmctl(first, second, ptr); 5010 break; 5011 default: 5012 gemu_log("Unsupported ipc call: %d (version %d)\n", call, version); 5013 ret = -TARGET_ENOSYS; 5014 break; 5015 } 5016 return ret; 5017 } 5018 #endif 5019 5020 /* kernel structure types definitions */ 5021 5022 #define STRUCT(name, ...) STRUCT_ ## name, 5023 #define STRUCT_SPECIAL(name) STRUCT_ ## name, 5024 enum { 5025 #include "syscall_types.h" 5026 STRUCT_MAX 5027 }; 5028 #undef STRUCT 5029 #undef STRUCT_SPECIAL 5030 5031 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL }; 5032 #define STRUCT_SPECIAL(name) 5033 #include "syscall_types.h" 5034 #undef STRUCT 5035 #undef STRUCT_SPECIAL 5036 5037 typedef struct IOCTLEntry IOCTLEntry; 5038 5039 typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp, 5040 int fd, int cmd, abi_long arg); 5041 5042 struct IOCTLEntry { 5043 int target_cmd; 5044 unsigned int host_cmd; 5045 const char *name; 5046 int access; 5047 do_ioctl_fn *do_ioctl; 5048 const argtype arg_type[5]; 5049 }; 5050 5051 #define IOC_R 0x0001 5052 #define IOC_W 0x0002 5053 #define IOC_RW (IOC_R | IOC_W) 5054 5055 #define MAX_STRUCT_SIZE 4096 5056 5057 #ifdef CONFIG_FIEMAP 5058 /* So fiemap access checks don't overflow on 32 bit systems. 5059 * This is very slightly smaller than the limit imposed by 5060 * the underlying kernel. 5061 */ 5062 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \ 5063 / sizeof(struct fiemap_extent)) 5064 5065 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp, 5066 int fd, int cmd, abi_long arg) 5067 { 5068 /* The parameter for this ioctl is a struct fiemap followed 5069 * by an array of struct fiemap_extent whose size is set 5070 * in fiemap->fm_extent_count. The array is filled in by the 5071 * ioctl. 5072 */ 5073 int target_size_in, target_size_out; 5074 struct fiemap *fm; 5075 const argtype *arg_type = ie->arg_type; 5076 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) }; 5077 void *argptr, *p; 5078 abi_long ret; 5079 int i, extent_size = thunk_type_size(extent_arg_type, 0); 5080 uint32_t outbufsz; 5081 int free_fm = 0; 5082 5083 assert(arg_type[0] == TYPE_PTR); 5084 assert(ie->access == IOC_RW); 5085 arg_type++; 5086 target_size_in = thunk_type_size(arg_type, 0); 5087 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1); 5088 if (!argptr) { 5089 return -TARGET_EFAULT; 5090 } 5091 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5092 unlock_user(argptr, arg, 0); 5093 fm = (struct fiemap *)buf_temp; 5094 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) { 5095 return -TARGET_EINVAL; 5096 } 5097 5098 outbufsz = sizeof (*fm) + 5099 (sizeof(struct fiemap_extent) * fm->fm_extent_count); 5100 5101 if (outbufsz > MAX_STRUCT_SIZE) { 5102 /* We can't fit all the extents into the fixed size buffer. 5103 * Allocate one that is large enough and use it instead. 5104 */ 5105 fm = g_try_malloc(outbufsz); 5106 if (!fm) { 5107 return -TARGET_ENOMEM; 5108 } 5109 memcpy(fm, buf_temp, sizeof(struct fiemap)); 5110 free_fm = 1; 5111 } 5112 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm)); 5113 if (!is_error(ret)) { 5114 target_size_out = target_size_in; 5115 /* An extent_count of 0 means we were only counting the extents 5116 * so there are no structs to copy 5117 */ 5118 if (fm->fm_extent_count != 0) { 5119 target_size_out += fm->fm_mapped_extents * extent_size; 5120 } 5121 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0); 5122 if (!argptr) { 5123 ret = -TARGET_EFAULT; 5124 } else { 5125 /* Convert the struct fiemap */ 5126 thunk_convert(argptr, fm, arg_type, THUNK_TARGET); 5127 if (fm->fm_extent_count != 0) { 5128 p = argptr + target_size_in; 5129 /* ...and then all the struct fiemap_extents */ 5130 for (i = 0; i < fm->fm_mapped_extents; i++) { 5131 thunk_convert(p, &fm->fm_extents[i], extent_arg_type, 5132 THUNK_TARGET); 5133 p += extent_size; 5134 } 5135 } 5136 unlock_user(argptr, arg, target_size_out); 5137 } 5138 } 5139 if (free_fm) { 5140 g_free(fm); 5141 } 5142 return ret; 5143 } 5144 #endif 5145 5146 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp, 5147 int fd, int cmd, abi_long arg) 5148 { 5149 const argtype *arg_type = ie->arg_type; 5150 int target_size; 5151 void *argptr; 5152 int ret; 5153 struct ifconf *host_ifconf; 5154 uint32_t outbufsz; 5155 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) }; 5156 int target_ifreq_size; 5157 int nb_ifreq; 5158 int free_buf = 0; 5159 int i; 5160 int target_ifc_len; 5161 abi_long target_ifc_buf; 5162 int host_ifc_len; 5163 char *host_ifc_buf; 5164 5165 assert(arg_type[0] == TYPE_PTR); 5166 assert(ie->access == IOC_RW); 5167 5168 arg_type++; 5169 target_size = thunk_type_size(arg_type, 0); 5170 5171 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5172 if (!argptr) 5173 return -TARGET_EFAULT; 5174 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5175 unlock_user(argptr, arg, 0); 5176 5177 host_ifconf = (struct ifconf *)(unsigned long)buf_temp; 5178 target_ifc_len = host_ifconf->ifc_len; 5179 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf; 5180 5181 target_ifreq_size = thunk_type_size(ifreq_arg_type, 0); 5182 nb_ifreq = target_ifc_len / target_ifreq_size; 5183 host_ifc_len = nb_ifreq * sizeof(struct ifreq); 5184 5185 outbufsz = sizeof(*host_ifconf) + host_ifc_len; 5186 if (outbufsz > MAX_STRUCT_SIZE) { 5187 /* We can't fit all the extents into the fixed size buffer. 5188 * Allocate one that is large enough and use it instead. 5189 */ 5190 host_ifconf = malloc(outbufsz); 5191 if (!host_ifconf) { 5192 return -TARGET_ENOMEM; 5193 } 5194 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf)); 5195 free_buf = 1; 5196 } 5197 host_ifc_buf = (char*)host_ifconf + sizeof(*host_ifconf); 5198 5199 host_ifconf->ifc_len = host_ifc_len; 5200 host_ifconf->ifc_buf = host_ifc_buf; 5201 5202 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf)); 5203 if (!is_error(ret)) { 5204 /* convert host ifc_len to target ifc_len */ 5205 5206 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq); 5207 target_ifc_len = nb_ifreq * target_ifreq_size; 5208 host_ifconf->ifc_len = target_ifc_len; 5209 5210 /* restore target ifc_buf */ 5211 5212 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf; 5213 5214 /* copy struct ifconf to target user */ 5215 5216 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5217 if (!argptr) 5218 return -TARGET_EFAULT; 5219 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET); 5220 unlock_user(argptr, arg, target_size); 5221 5222 /* copy ifreq[] to target user */ 5223 5224 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0); 5225 for (i = 0; i < nb_ifreq ; i++) { 5226 thunk_convert(argptr + i * target_ifreq_size, 5227 host_ifc_buf + i * sizeof(struct ifreq), 5228 ifreq_arg_type, THUNK_TARGET); 5229 } 5230 unlock_user(argptr, target_ifc_buf, target_ifc_len); 5231 } 5232 5233 if (free_buf) { 5234 free(host_ifconf); 5235 } 5236 5237 return ret; 5238 } 5239 5240 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5241 int cmd, abi_long arg) 5242 { 5243 void *argptr; 5244 struct dm_ioctl *host_dm; 5245 abi_long guest_data; 5246 uint32_t guest_data_size; 5247 int target_size; 5248 const argtype *arg_type = ie->arg_type; 5249 abi_long ret; 5250 void *big_buf = NULL; 5251 char *host_data; 5252 5253 arg_type++; 5254 target_size = thunk_type_size(arg_type, 0); 5255 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5256 if (!argptr) { 5257 ret = -TARGET_EFAULT; 5258 goto out; 5259 } 5260 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5261 unlock_user(argptr, arg, 0); 5262 5263 /* buf_temp is too small, so fetch things into a bigger buffer */ 5264 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2); 5265 memcpy(big_buf, buf_temp, target_size); 5266 buf_temp = big_buf; 5267 host_dm = big_buf; 5268 5269 guest_data = arg + host_dm->data_start; 5270 if ((guest_data - arg) < 0) { 5271 ret = -TARGET_EINVAL; 5272 goto out; 5273 } 5274 guest_data_size = host_dm->data_size - host_dm->data_start; 5275 host_data = (char*)host_dm + host_dm->data_start; 5276 5277 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1); 5278 if (!argptr) { 5279 ret = -TARGET_EFAULT; 5280 goto out; 5281 } 5282 5283 switch (ie->host_cmd) { 5284 case DM_REMOVE_ALL: 5285 case DM_LIST_DEVICES: 5286 case DM_DEV_CREATE: 5287 case DM_DEV_REMOVE: 5288 case DM_DEV_SUSPEND: 5289 case DM_DEV_STATUS: 5290 case DM_DEV_WAIT: 5291 case DM_TABLE_STATUS: 5292 case DM_TABLE_CLEAR: 5293 case DM_TABLE_DEPS: 5294 case DM_LIST_VERSIONS: 5295 /* no input data */ 5296 break; 5297 case DM_DEV_RENAME: 5298 case DM_DEV_SET_GEOMETRY: 5299 /* data contains only strings */ 5300 memcpy(host_data, argptr, guest_data_size); 5301 break; 5302 case DM_TARGET_MSG: 5303 memcpy(host_data, argptr, guest_data_size); 5304 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr); 5305 break; 5306 case DM_TABLE_LOAD: 5307 { 5308 void *gspec = argptr; 5309 void *cur_data = host_data; 5310 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5311 int spec_size = thunk_type_size(arg_type, 0); 5312 int i; 5313 5314 for (i = 0; i < host_dm->target_count; i++) { 5315 struct dm_target_spec *spec = cur_data; 5316 uint32_t next; 5317 int slen; 5318 5319 thunk_convert(spec, gspec, arg_type, THUNK_HOST); 5320 slen = strlen((char*)gspec + spec_size) + 1; 5321 next = spec->next; 5322 spec->next = sizeof(*spec) + slen; 5323 strcpy((char*)&spec[1], gspec + spec_size); 5324 gspec += next; 5325 cur_data += spec->next; 5326 } 5327 break; 5328 } 5329 default: 5330 ret = -TARGET_EINVAL; 5331 unlock_user(argptr, guest_data, 0); 5332 goto out; 5333 } 5334 unlock_user(argptr, guest_data, 0); 5335 5336 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5337 if (!is_error(ret)) { 5338 guest_data = arg + host_dm->data_start; 5339 guest_data_size = host_dm->data_size - host_dm->data_start; 5340 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0); 5341 switch (ie->host_cmd) { 5342 case DM_REMOVE_ALL: 5343 case DM_DEV_CREATE: 5344 case DM_DEV_REMOVE: 5345 case DM_DEV_RENAME: 5346 case DM_DEV_SUSPEND: 5347 case DM_DEV_STATUS: 5348 case DM_TABLE_LOAD: 5349 case DM_TABLE_CLEAR: 5350 case DM_TARGET_MSG: 5351 case DM_DEV_SET_GEOMETRY: 5352 /* no return data */ 5353 break; 5354 case DM_LIST_DEVICES: 5355 { 5356 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start; 5357 uint32_t remaining_data = guest_data_size; 5358 void *cur_data = argptr; 5359 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) }; 5360 int nl_size = 12; /* can't use thunk_size due to alignment */ 5361 5362 while (1) { 5363 uint32_t next = nl->next; 5364 if (next) { 5365 nl->next = nl_size + (strlen(nl->name) + 1); 5366 } 5367 if (remaining_data < nl->next) { 5368 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5369 break; 5370 } 5371 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET); 5372 strcpy(cur_data + nl_size, nl->name); 5373 cur_data += nl->next; 5374 remaining_data -= nl->next; 5375 if (!next) { 5376 break; 5377 } 5378 nl = (void*)nl + next; 5379 } 5380 break; 5381 } 5382 case DM_DEV_WAIT: 5383 case DM_TABLE_STATUS: 5384 { 5385 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start; 5386 void *cur_data = argptr; 5387 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; 5388 int spec_size = thunk_type_size(arg_type, 0); 5389 int i; 5390 5391 for (i = 0; i < host_dm->target_count; i++) { 5392 uint32_t next = spec->next; 5393 int slen = strlen((char*)&spec[1]) + 1; 5394 spec->next = (cur_data - argptr) + spec_size + slen; 5395 if (guest_data_size < spec->next) { 5396 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5397 break; 5398 } 5399 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET); 5400 strcpy(cur_data + spec_size, (char*)&spec[1]); 5401 cur_data = argptr + spec->next; 5402 spec = (void*)host_dm + host_dm->data_start + next; 5403 } 5404 break; 5405 } 5406 case DM_TABLE_DEPS: 5407 { 5408 void *hdata = (void*)host_dm + host_dm->data_start; 5409 int count = *(uint32_t*)hdata; 5410 uint64_t *hdev = hdata + 8; 5411 uint64_t *gdev = argptr + 8; 5412 int i; 5413 5414 *(uint32_t*)argptr = tswap32(count); 5415 for (i = 0; i < count; i++) { 5416 *gdev = tswap64(*hdev); 5417 gdev++; 5418 hdev++; 5419 } 5420 break; 5421 } 5422 case DM_LIST_VERSIONS: 5423 { 5424 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start; 5425 uint32_t remaining_data = guest_data_size; 5426 void *cur_data = argptr; 5427 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) }; 5428 int vers_size = thunk_type_size(arg_type, 0); 5429 5430 while (1) { 5431 uint32_t next = vers->next; 5432 if (next) { 5433 vers->next = vers_size + (strlen(vers->name) + 1); 5434 } 5435 if (remaining_data < vers->next) { 5436 host_dm->flags |= DM_BUFFER_FULL_FLAG; 5437 break; 5438 } 5439 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET); 5440 strcpy(cur_data + vers_size, vers->name); 5441 cur_data += vers->next; 5442 remaining_data -= vers->next; 5443 if (!next) { 5444 break; 5445 } 5446 vers = (void*)vers + next; 5447 } 5448 break; 5449 } 5450 default: 5451 unlock_user(argptr, guest_data, 0); 5452 ret = -TARGET_EINVAL; 5453 goto out; 5454 } 5455 unlock_user(argptr, guest_data, guest_data_size); 5456 5457 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5458 if (!argptr) { 5459 ret = -TARGET_EFAULT; 5460 goto out; 5461 } 5462 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5463 unlock_user(argptr, arg, target_size); 5464 } 5465 out: 5466 g_free(big_buf); 5467 return ret; 5468 } 5469 5470 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, 5471 int cmd, abi_long arg) 5472 { 5473 void *argptr; 5474 int target_size; 5475 const argtype *arg_type = ie->arg_type; 5476 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) }; 5477 abi_long ret; 5478 5479 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp; 5480 struct blkpg_partition host_part; 5481 5482 /* Read and convert blkpg */ 5483 arg_type++; 5484 target_size = thunk_type_size(arg_type, 0); 5485 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5486 if (!argptr) { 5487 ret = -TARGET_EFAULT; 5488 goto out; 5489 } 5490 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5491 unlock_user(argptr, arg, 0); 5492 5493 switch (host_blkpg->op) { 5494 case BLKPG_ADD_PARTITION: 5495 case BLKPG_DEL_PARTITION: 5496 /* payload is struct blkpg_partition */ 5497 break; 5498 default: 5499 /* Unknown opcode */ 5500 ret = -TARGET_EINVAL; 5501 goto out; 5502 } 5503 5504 /* Read and convert blkpg->data */ 5505 arg = (abi_long)(uintptr_t)host_blkpg->data; 5506 target_size = thunk_type_size(part_arg_type, 0); 5507 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5508 if (!argptr) { 5509 ret = -TARGET_EFAULT; 5510 goto out; 5511 } 5512 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST); 5513 unlock_user(argptr, arg, 0); 5514 5515 /* Swizzle the data pointer to our local copy and call! */ 5516 host_blkpg->data = &host_part; 5517 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg)); 5518 5519 out: 5520 return ret; 5521 } 5522 5523 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp, 5524 int fd, int cmd, abi_long arg) 5525 { 5526 const argtype *arg_type = ie->arg_type; 5527 const StructEntry *se; 5528 const argtype *field_types; 5529 const int *dst_offsets, *src_offsets; 5530 int target_size; 5531 void *argptr; 5532 abi_ulong *target_rt_dev_ptr; 5533 unsigned long *host_rt_dev_ptr; 5534 abi_long ret; 5535 int i; 5536 5537 assert(ie->access == IOC_W); 5538 assert(*arg_type == TYPE_PTR); 5539 arg_type++; 5540 assert(*arg_type == TYPE_STRUCT); 5541 target_size = thunk_type_size(arg_type, 0); 5542 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5543 if (!argptr) { 5544 return -TARGET_EFAULT; 5545 } 5546 arg_type++; 5547 assert(*arg_type == (int)STRUCT_rtentry); 5548 se = struct_entries + *arg_type++; 5549 assert(se->convert[0] == NULL); 5550 /* convert struct here to be able to catch rt_dev string */ 5551 field_types = se->field_types; 5552 dst_offsets = se->field_offsets[THUNK_HOST]; 5553 src_offsets = se->field_offsets[THUNK_TARGET]; 5554 for (i = 0; i < se->nb_fields; i++) { 5555 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) { 5556 assert(*field_types == TYPE_PTRVOID); 5557 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]); 5558 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]); 5559 if (*target_rt_dev_ptr != 0) { 5560 *host_rt_dev_ptr = (unsigned long)lock_user_string( 5561 tswapal(*target_rt_dev_ptr)); 5562 if (!*host_rt_dev_ptr) { 5563 unlock_user(argptr, arg, 0); 5564 return -TARGET_EFAULT; 5565 } 5566 } else { 5567 *host_rt_dev_ptr = 0; 5568 } 5569 field_types++; 5570 continue; 5571 } 5572 field_types = thunk_convert(buf_temp + dst_offsets[i], 5573 argptr + src_offsets[i], 5574 field_types, THUNK_HOST); 5575 } 5576 unlock_user(argptr, arg, 0); 5577 assert(host_rt_dev_ptr); 5578 5579 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5580 if (*host_rt_dev_ptr != 0) { 5581 unlock_user((void *)*host_rt_dev_ptr, 5582 *target_rt_dev_ptr, 0); 5583 } 5584 return ret; 5585 } 5586 5587 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp, 5588 int fd, int cmd, abi_long arg) 5589 { 5590 int sig = target_to_host_signal(arg); 5591 return get_errno(safe_ioctl(fd, ie->host_cmd, sig)); 5592 } 5593 5594 static IOCTLEntry ioctl_entries[] = { 5595 #define IOCTL(cmd, access, ...) \ 5596 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } }, 5597 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \ 5598 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } }, 5599 #define IOCTL_IGNORE(cmd) \ 5600 { TARGET_ ## cmd, 0, #cmd }, 5601 #include "ioctls.h" 5602 { 0, 0, }, 5603 }; 5604 5605 /* ??? Implement proper locking for ioctls. */ 5606 /* do_ioctl() Must return target values and target errnos. */ 5607 static abi_long do_ioctl(int fd, int cmd, abi_long arg) 5608 { 5609 const IOCTLEntry *ie; 5610 const argtype *arg_type; 5611 abi_long ret; 5612 uint8_t buf_temp[MAX_STRUCT_SIZE]; 5613 int target_size; 5614 void *argptr; 5615 5616 ie = ioctl_entries; 5617 for(;;) { 5618 if (ie->target_cmd == 0) { 5619 gemu_log("Unsupported ioctl: cmd=0x%04lx\n", (long)cmd); 5620 return -TARGET_ENOSYS; 5621 } 5622 if (ie->target_cmd == cmd) 5623 break; 5624 ie++; 5625 } 5626 arg_type = ie->arg_type; 5627 #if defined(DEBUG) 5628 gemu_log("ioctl: cmd=0x%04lx (%s)\n", (long)cmd, ie->name); 5629 #endif 5630 if (ie->do_ioctl) { 5631 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg); 5632 } else if (!ie->host_cmd) { 5633 /* Some architectures define BSD ioctls in their headers 5634 that are not implemented in Linux. */ 5635 return -TARGET_ENOSYS; 5636 } 5637 5638 switch(arg_type[0]) { 5639 case TYPE_NULL: 5640 /* no argument */ 5641 ret = get_errno(safe_ioctl(fd, ie->host_cmd)); 5642 break; 5643 case TYPE_PTRVOID: 5644 case TYPE_INT: 5645 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg)); 5646 break; 5647 case TYPE_PTR: 5648 arg_type++; 5649 target_size = thunk_type_size(arg_type, 0); 5650 switch(ie->access) { 5651 case IOC_R: 5652 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5653 if (!is_error(ret)) { 5654 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5655 if (!argptr) 5656 return -TARGET_EFAULT; 5657 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5658 unlock_user(argptr, arg, target_size); 5659 } 5660 break; 5661 case IOC_W: 5662 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5663 if (!argptr) 5664 return -TARGET_EFAULT; 5665 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5666 unlock_user(argptr, arg, 0); 5667 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5668 break; 5669 default: 5670 case IOC_RW: 5671 argptr = lock_user(VERIFY_READ, arg, target_size, 1); 5672 if (!argptr) 5673 return -TARGET_EFAULT; 5674 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); 5675 unlock_user(argptr, arg, 0); 5676 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); 5677 if (!is_error(ret)) { 5678 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); 5679 if (!argptr) 5680 return -TARGET_EFAULT; 5681 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); 5682 unlock_user(argptr, arg, target_size); 5683 } 5684 break; 5685 } 5686 break; 5687 default: 5688 gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", 5689 (long)cmd, arg_type[0]); 5690 ret = -TARGET_ENOSYS; 5691 break; 5692 } 5693 return ret; 5694 } 5695 5696 static const bitmask_transtbl iflag_tbl[] = { 5697 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK }, 5698 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT }, 5699 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR }, 5700 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK }, 5701 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK }, 5702 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP }, 5703 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR }, 5704 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR }, 5705 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL }, 5706 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC }, 5707 { TARGET_IXON, TARGET_IXON, IXON, IXON }, 5708 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY }, 5709 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF }, 5710 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL }, 5711 { 0, 0, 0, 0 } 5712 }; 5713 5714 static const bitmask_transtbl oflag_tbl[] = { 5715 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST }, 5716 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC }, 5717 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR }, 5718 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL }, 5719 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR }, 5720 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET }, 5721 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL }, 5722 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL }, 5723 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 }, 5724 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 }, 5725 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 }, 5726 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 }, 5727 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 }, 5728 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 }, 5729 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 }, 5730 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 }, 5731 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 }, 5732 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 }, 5733 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 }, 5734 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 }, 5735 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 }, 5736 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 }, 5737 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 }, 5738 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 }, 5739 { 0, 0, 0, 0 } 5740 }; 5741 5742 static const bitmask_transtbl cflag_tbl[] = { 5743 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 }, 5744 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 }, 5745 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 }, 5746 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 }, 5747 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 }, 5748 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 }, 5749 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 }, 5750 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 }, 5751 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 }, 5752 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 }, 5753 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 }, 5754 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 }, 5755 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 }, 5756 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 }, 5757 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 }, 5758 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 }, 5759 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 }, 5760 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 }, 5761 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 }, 5762 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 }, 5763 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 }, 5764 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 }, 5765 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 }, 5766 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 }, 5767 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB }, 5768 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD }, 5769 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB }, 5770 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD }, 5771 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL }, 5772 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL }, 5773 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS }, 5774 { 0, 0, 0, 0 } 5775 }; 5776 5777 static const bitmask_transtbl lflag_tbl[] = { 5778 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG }, 5779 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON }, 5780 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE }, 5781 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO }, 5782 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE }, 5783 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK }, 5784 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL }, 5785 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH }, 5786 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP }, 5787 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL }, 5788 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT }, 5789 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE }, 5790 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO }, 5791 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN }, 5792 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN }, 5793 { 0, 0, 0, 0 } 5794 }; 5795 5796 static void target_to_host_termios (void *dst, const void *src) 5797 { 5798 struct host_termios *host = dst; 5799 const struct target_termios *target = src; 5800 5801 host->c_iflag = 5802 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl); 5803 host->c_oflag = 5804 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl); 5805 host->c_cflag = 5806 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl); 5807 host->c_lflag = 5808 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl); 5809 host->c_line = target->c_line; 5810 5811 memset(host->c_cc, 0, sizeof(host->c_cc)); 5812 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR]; 5813 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT]; 5814 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE]; 5815 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL]; 5816 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF]; 5817 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME]; 5818 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN]; 5819 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC]; 5820 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART]; 5821 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP]; 5822 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP]; 5823 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL]; 5824 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT]; 5825 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD]; 5826 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE]; 5827 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT]; 5828 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2]; 5829 } 5830 5831 static void host_to_target_termios (void *dst, const void *src) 5832 { 5833 struct target_termios *target = dst; 5834 const struct host_termios *host = src; 5835 5836 target->c_iflag = 5837 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl)); 5838 target->c_oflag = 5839 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl)); 5840 target->c_cflag = 5841 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl)); 5842 target->c_lflag = 5843 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl)); 5844 target->c_line = host->c_line; 5845 5846 memset(target->c_cc, 0, sizeof(target->c_cc)); 5847 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR]; 5848 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT]; 5849 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE]; 5850 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL]; 5851 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF]; 5852 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME]; 5853 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN]; 5854 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC]; 5855 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART]; 5856 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP]; 5857 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP]; 5858 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL]; 5859 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT]; 5860 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD]; 5861 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE]; 5862 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT]; 5863 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2]; 5864 } 5865 5866 static const StructEntry struct_termios_def = { 5867 .convert = { host_to_target_termios, target_to_host_termios }, 5868 .size = { sizeof(struct target_termios), sizeof(struct host_termios) }, 5869 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) }, 5870 }; 5871 5872 static bitmask_transtbl mmap_flags_tbl[] = { 5873 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED }, 5874 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE }, 5875 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED }, 5876 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, MAP_ANONYMOUS, MAP_ANONYMOUS }, 5877 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, MAP_GROWSDOWN, MAP_GROWSDOWN }, 5878 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, MAP_DENYWRITE, MAP_DENYWRITE }, 5879 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, MAP_EXECUTABLE, MAP_EXECUTABLE }, 5880 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED }, 5881 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE, MAP_NORESERVE, 5882 MAP_NORESERVE }, 5883 { 0, 0, 0, 0 } 5884 }; 5885 5886 #if defined(TARGET_I386) 5887 5888 /* NOTE: there is really one LDT for all the threads */ 5889 static uint8_t *ldt_table; 5890 5891 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount) 5892 { 5893 int size; 5894 void *p; 5895 5896 if (!ldt_table) 5897 return 0; 5898 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE; 5899 if (size > bytecount) 5900 size = bytecount; 5901 p = lock_user(VERIFY_WRITE, ptr, size, 0); 5902 if (!p) 5903 return -TARGET_EFAULT; 5904 /* ??? Should this by byteswapped? */ 5905 memcpy(p, ldt_table, size); 5906 unlock_user(p, ptr, size); 5907 return size; 5908 } 5909 5910 /* XXX: add locking support */ 5911 static abi_long write_ldt(CPUX86State *env, 5912 abi_ulong ptr, unsigned long bytecount, int oldmode) 5913 { 5914 struct target_modify_ldt_ldt_s ldt_info; 5915 struct target_modify_ldt_ldt_s *target_ldt_info; 5916 int seg_32bit, contents, read_exec_only, limit_in_pages; 5917 int seg_not_present, useable, lm; 5918 uint32_t *lp, entry_1, entry_2; 5919 5920 if (bytecount != sizeof(ldt_info)) 5921 return -TARGET_EINVAL; 5922 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1)) 5923 return -TARGET_EFAULT; 5924 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 5925 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 5926 ldt_info.limit = tswap32(target_ldt_info->limit); 5927 ldt_info.flags = tswap32(target_ldt_info->flags); 5928 unlock_user_struct(target_ldt_info, ptr, 0); 5929 5930 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES) 5931 return -TARGET_EINVAL; 5932 seg_32bit = ldt_info.flags & 1; 5933 contents = (ldt_info.flags >> 1) & 3; 5934 read_exec_only = (ldt_info.flags >> 3) & 1; 5935 limit_in_pages = (ldt_info.flags >> 4) & 1; 5936 seg_not_present = (ldt_info.flags >> 5) & 1; 5937 useable = (ldt_info.flags >> 6) & 1; 5938 #ifdef TARGET_ABI32 5939 lm = 0; 5940 #else 5941 lm = (ldt_info.flags >> 7) & 1; 5942 #endif 5943 if (contents == 3) { 5944 if (oldmode) 5945 return -TARGET_EINVAL; 5946 if (seg_not_present == 0) 5947 return -TARGET_EINVAL; 5948 } 5949 /* allocate the LDT */ 5950 if (!ldt_table) { 5951 env->ldt.base = target_mmap(0, 5952 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE, 5953 PROT_READ|PROT_WRITE, 5954 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 5955 if (env->ldt.base == -1) 5956 return -TARGET_ENOMEM; 5957 memset(g2h(env->ldt.base), 0, 5958 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE); 5959 env->ldt.limit = 0xffff; 5960 ldt_table = g2h(env->ldt.base); 5961 } 5962 5963 /* NOTE: same code as Linux kernel */ 5964 /* Allow LDTs to be cleared by the user. */ 5965 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 5966 if (oldmode || 5967 (contents == 0 && 5968 read_exec_only == 1 && 5969 seg_32bit == 0 && 5970 limit_in_pages == 0 && 5971 seg_not_present == 1 && 5972 useable == 0 )) { 5973 entry_1 = 0; 5974 entry_2 = 0; 5975 goto install; 5976 } 5977 } 5978 5979 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 5980 (ldt_info.limit & 0x0ffff); 5981 entry_2 = (ldt_info.base_addr & 0xff000000) | 5982 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 5983 (ldt_info.limit & 0xf0000) | 5984 ((read_exec_only ^ 1) << 9) | 5985 (contents << 10) | 5986 ((seg_not_present ^ 1) << 15) | 5987 (seg_32bit << 22) | 5988 (limit_in_pages << 23) | 5989 (lm << 21) | 5990 0x7000; 5991 if (!oldmode) 5992 entry_2 |= (useable << 20); 5993 5994 /* Install the new entry ... */ 5995 install: 5996 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3)); 5997 lp[0] = tswap32(entry_1); 5998 lp[1] = tswap32(entry_2); 5999 return 0; 6000 } 6001 6002 /* specific and weird i386 syscalls */ 6003 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr, 6004 unsigned long bytecount) 6005 { 6006 abi_long ret; 6007 6008 switch (func) { 6009 case 0: 6010 ret = read_ldt(ptr, bytecount); 6011 break; 6012 case 1: 6013 ret = write_ldt(env, ptr, bytecount, 1); 6014 break; 6015 case 0x11: 6016 ret = write_ldt(env, ptr, bytecount, 0); 6017 break; 6018 default: 6019 ret = -TARGET_ENOSYS; 6020 break; 6021 } 6022 return ret; 6023 } 6024 6025 #if defined(TARGET_I386) && defined(TARGET_ABI32) 6026 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr) 6027 { 6028 uint64_t *gdt_table = g2h(env->gdt.base); 6029 struct target_modify_ldt_ldt_s ldt_info; 6030 struct target_modify_ldt_ldt_s *target_ldt_info; 6031 int seg_32bit, contents, read_exec_only, limit_in_pages; 6032 int seg_not_present, useable, lm; 6033 uint32_t *lp, entry_1, entry_2; 6034 int i; 6035 6036 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6037 if (!target_ldt_info) 6038 return -TARGET_EFAULT; 6039 ldt_info.entry_number = tswap32(target_ldt_info->entry_number); 6040 ldt_info.base_addr = tswapal(target_ldt_info->base_addr); 6041 ldt_info.limit = tswap32(target_ldt_info->limit); 6042 ldt_info.flags = tswap32(target_ldt_info->flags); 6043 if (ldt_info.entry_number == -1) { 6044 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) { 6045 if (gdt_table[i] == 0) { 6046 ldt_info.entry_number = i; 6047 target_ldt_info->entry_number = tswap32(i); 6048 break; 6049 } 6050 } 6051 } 6052 unlock_user_struct(target_ldt_info, ptr, 1); 6053 6054 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN || 6055 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX) 6056 return -TARGET_EINVAL; 6057 seg_32bit = ldt_info.flags & 1; 6058 contents = (ldt_info.flags >> 1) & 3; 6059 read_exec_only = (ldt_info.flags >> 3) & 1; 6060 limit_in_pages = (ldt_info.flags >> 4) & 1; 6061 seg_not_present = (ldt_info.flags >> 5) & 1; 6062 useable = (ldt_info.flags >> 6) & 1; 6063 #ifdef TARGET_ABI32 6064 lm = 0; 6065 #else 6066 lm = (ldt_info.flags >> 7) & 1; 6067 #endif 6068 6069 if (contents == 3) { 6070 if (seg_not_present == 0) 6071 return -TARGET_EINVAL; 6072 } 6073 6074 /* NOTE: same code as Linux kernel */ 6075 /* Allow LDTs to be cleared by the user. */ 6076 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { 6077 if ((contents == 0 && 6078 read_exec_only == 1 && 6079 seg_32bit == 0 && 6080 limit_in_pages == 0 && 6081 seg_not_present == 1 && 6082 useable == 0 )) { 6083 entry_1 = 0; 6084 entry_2 = 0; 6085 goto install; 6086 } 6087 } 6088 6089 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | 6090 (ldt_info.limit & 0x0ffff); 6091 entry_2 = (ldt_info.base_addr & 0xff000000) | 6092 ((ldt_info.base_addr & 0x00ff0000) >> 16) | 6093 (ldt_info.limit & 0xf0000) | 6094 ((read_exec_only ^ 1) << 9) | 6095 (contents << 10) | 6096 ((seg_not_present ^ 1) << 15) | 6097 (seg_32bit << 22) | 6098 (limit_in_pages << 23) | 6099 (useable << 20) | 6100 (lm << 21) | 6101 0x7000; 6102 6103 /* Install the new entry ... */ 6104 install: 6105 lp = (uint32_t *)(gdt_table + ldt_info.entry_number); 6106 lp[0] = tswap32(entry_1); 6107 lp[1] = tswap32(entry_2); 6108 return 0; 6109 } 6110 6111 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr) 6112 { 6113 struct target_modify_ldt_ldt_s *target_ldt_info; 6114 uint64_t *gdt_table = g2h(env->gdt.base); 6115 uint32_t base_addr, limit, flags; 6116 int seg_32bit, contents, read_exec_only, limit_in_pages, idx; 6117 int seg_not_present, useable, lm; 6118 uint32_t *lp, entry_1, entry_2; 6119 6120 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); 6121 if (!target_ldt_info) 6122 return -TARGET_EFAULT; 6123 idx = tswap32(target_ldt_info->entry_number); 6124 if (idx < TARGET_GDT_ENTRY_TLS_MIN || 6125 idx > TARGET_GDT_ENTRY_TLS_MAX) { 6126 unlock_user_struct(target_ldt_info, ptr, 1); 6127 return -TARGET_EINVAL; 6128 } 6129 lp = (uint32_t *)(gdt_table + idx); 6130 entry_1 = tswap32(lp[0]); 6131 entry_2 = tswap32(lp[1]); 6132 6133 read_exec_only = ((entry_2 >> 9) & 1) ^ 1; 6134 contents = (entry_2 >> 10) & 3; 6135 seg_not_present = ((entry_2 >> 15) & 1) ^ 1; 6136 seg_32bit = (entry_2 >> 22) & 1; 6137 limit_in_pages = (entry_2 >> 23) & 1; 6138 useable = (entry_2 >> 20) & 1; 6139 #ifdef TARGET_ABI32 6140 lm = 0; 6141 #else 6142 lm = (entry_2 >> 21) & 1; 6143 #endif 6144 flags = (seg_32bit << 0) | (contents << 1) | 6145 (read_exec_only << 3) | (limit_in_pages << 4) | 6146 (seg_not_present << 5) | (useable << 6) | (lm << 7); 6147 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000); 6148 base_addr = (entry_1 >> 16) | 6149 (entry_2 & 0xff000000) | 6150 ((entry_2 & 0xff) << 16); 6151 target_ldt_info->base_addr = tswapal(base_addr); 6152 target_ldt_info->limit = tswap32(limit); 6153 target_ldt_info->flags = tswap32(flags); 6154 unlock_user_struct(target_ldt_info, ptr, 1); 6155 return 0; 6156 } 6157 #endif /* TARGET_I386 && TARGET_ABI32 */ 6158 6159 #ifndef TARGET_ABI32 6160 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) 6161 { 6162 abi_long ret = 0; 6163 abi_ulong val; 6164 int idx; 6165 6166 switch(code) { 6167 case TARGET_ARCH_SET_GS: 6168 case TARGET_ARCH_SET_FS: 6169 if (code == TARGET_ARCH_SET_GS) 6170 idx = R_GS; 6171 else 6172 idx = R_FS; 6173 cpu_x86_load_seg(env, idx, 0); 6174 env->segs[idx].base = addr; 6175 break; 6176 case TARGET_ARCH_GET_GS: 6177 case TARGET_ARCH_GET_FS: 6178 if (code == TARGET_ARCH_GET_GS) 6179 idx = R_GS; 6180 else 6181 idx = R_FS; 6182 val = env->segs[idx].base; 6183 if (put_user(val, addr, abi_ulong)) 6184 ret = -TARGET_EFAULT; 6185 break; 6186 default: 6187 ret = -TARGET_EINVAL; 6188 break; 6189 } 6190 return ret; 6191 } 6192 #endif 6193 6194 #endif /* defined(TARGET_I386) */ 6195 6196 #define NEW_STACK_SIZE 0x40000 6197 6198 6199 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER; 6200 typedef struct { 6201 CPUArchState *env; 6202 pthread_mutex_t mutex; 6203 pthread_cond_t cond; 6204 pthread_t thread; 6205 uint32_t tid; 6206 abi_ulong child_tidptr; 6207 abi_ulong parent_tidptr; 6208 sigset_t sigmask; 6209 } new_thread_info; 6210 6211 static void *clone_func(void *arg) 6212 { 6213 new_thread_info *info = arg; 6214 CPUArchState *env; 6215 CPUState *cpu; 6216 TaskState *ts; 6217 6218 rcu_register_thread(); 6219 env = info->env; 6220 cpu = ENV_GET_CPU(env); 6221 thread_cpu = cpu; 6222 ts = (TaskState *)cpu->opaque; 6223 info->tid = gettid(); 6224 task_settid(ts); 6225 if (info->child_tidptr) 6226 put_user_u32(info->tid, info->child_tidptr); 6227 if (info->parent_tidptr) 6228 put_user_u32(info->tid, info->parent_tidptr); 6229 /* Enable signals. */ 6230 sigprocmask(SIG_SETMASK, &info->sigmask, NULL); 6231 /* Signal to the parent that we're ready. */ 6232 pthread_mutex_lock(&info->mutex); 6233 pthread_cond_broadcast(&info->cond); 6234 pthread_mutex_unlock(&info->mutex); 6235 /* Wait until the parent has finshed initializing the tls state. */ 6236 pthread_mutex_lock(&clone_lock); 6237 pthread_mutex_unlock(&clone_lock); 6238 cpu_loop(env); 6239 /* never exits */ 6240 return NULL; 6241 } 6242 6243 /* do_fork() Must return host values and target errnos (unlike most 6244 do_*() functions). */ 6245 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, 6246 abi_ulong parent_tidptr, target_ulong newtls, 6247 abi_ulong child_tidptr) 6248 { 6249 CPUState *cpu = ENV_GET_CPU(env); 6250 int ret; 6251 TaskState *ts; 6252 CPUState *new_cpu; 6253 CPUArchState *new_env; 6254 sigset_t sigmask; 6255 6256 flags &= ~CLONE_IGNORED_FLAGS; 6257 6258 /* Emulate vfork() with fork() */ 6259 if (flags & CLONE_VFORK) 6260 flags &= ~(CLONE_VFORK | CLONE_VM); 6261 6262 if (flags & CLONE_VM) { 6263 TaskState *parent_ts = (TaskState *)cpu->opaque; 6264 new_thread_info info; 6265 pthread_attr_t attr; 6266 6267 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) || 6268 (flags & CLONE_INVALID_THREAD_FLAGS)) { 6269 return -TARGET_EINVAL; 6270 } 6271 6272 ts = g_new0(TaskState, 1); 6273 init_task_state(ts); 6274 /* we create a new CPU instance. */ 6275 new_env = cpu_copy(env); 6276 /* Init regs that differ from the parent. */ 6277 cpu_clone_regs(new_env, newsp); 6278 new_cpu = ENV_GET_CPU(new_env); 6279 new_cpu->opaque = ts; 6280 ts->bprm = parent_ts->bprm; 6281 ts->info = parent_ts->info; 6282 ts->signal_mask = parent_ts->signal_mask; 6283 6284 if (flags & CLONE_CHILD_CLEARTID) { 6285 ts->child_tidptr = child_tidptr; 6286 } 6287 6288 if (flags & CLONE_SETTLS) { 6289 cpu_set_tls (new_env, newtls); 6290 } 6291 6292 /* Grab a mutex so that thread setup appears atomic. */ 6293 pthread_mutex_lock(&clone_lock); 6294 6295 memset(&info, 0, sizeof(info)); 6296 pthread_mutex_init(&info.mutex, NULL); 6297 pthread_mutex_lock(&info.mutex); 6298 pthread_cond_init(&info.cond, NULL); 6299 info.env = new_env; 6300 if (flags & CLONE_CHILD_SETTID) { 6301 info.child_tidptr = child_tidptr; 6302 } 6303 if (flags & CLONE_PARENT_SETTID) { 6304 info.parent_tidptr = parent_tidptr; 6305 } 6306 6307 ret = pthread_attr_init(&attr); 6308 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE); 6309 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); 6310 /* It is not safe to deliver signals until the child has finished 6311 initializing, so temporarily block all signals. */ 6312 sigfillset(&sigmask); 6313 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask); 6314 6315 /* If this is our first additional thread, we need to ensure we 6316 * generate code for parallel execution and flush old translations. 6317 */ 6318 if (!parallel_cpus) { 6319 parallel_cpus = true; 6320 tb_flush(cpu); 6321 } 6322 6323 ret = pthread_create(&info.thread, &attr, clone_func, &info); 6324 /* TODO: Free new CPU state if thread creation failed. */ 6325 6326 sigprocmask(SIG_SETMASK, &info.sigmask, NULL); 6327 pthread_attr_destroy(&attr); 6328 if (ret == 0) { 6329 /* Wait for the child to initialize. */ 6330 pthread_cond_wait(&info.cond, &info.mutex); 6331 ret = info.tid; 6332 } else { 6333 ret = -1; 6334 } 6335 pthread_mutex_unlock(&info.mutex); 6336 pthread_cond_destroy(&info.cond); 6337 pthread_mutex_destroy(&info.mutex); 6338 pthread_mutex_unlock(&clone_lock); 6339 } else { 6340 /* if no CLONE_VM, we consider it is a fork */ 6341 if (flags & CLONE_INVALID_FORK_FLAGS) { 6342 return -TARGET_EINVAL; 6343 } 6344 6345 /* We can't support custom termination signals */ 6346 if ((flags & CSIGNAL) != TARGET_SIGCHLD) { 6347 return -TARGET_EINVAL; 6348 } 6349 6350 if (block_signals()) { 6351 return -TARGET_ERESTARTSYS; 6352 } 6353 6354 fork_start(); 6355 ret = fork(); 6356 if (ret == 0) { 6357 /* Child Process. */ 6358 rcu_after_fork(); 6359 cpu_clone_regs(env, newsp); 6360 fork_end(1); 6361 /* There is a race condition here. The parent process could 6362 theoretically read the TID in the child process before the child 6363 tid is set. This would require using either ptrace 6364 (not implemented) or having *_tidptr to point at a shared memory 6365 mapping. We can't repeat the spinlock hack used above because 6366 the child process gets its own copy of the lock. */ 6367 if (flags & CLONE_CHILD_SETTID) 6368 put_user_u32(gettid(), child_tidptr); 6369 if (flags & CLONE_PARENT_SETTID) 6370 put_user_u32(gettid(), parent_tidptr); 6371 ts = (TaskState *)cpu->opaque; 6372 if (flags & CLONE_SETTLS) 6373 cpu_set_tls (env, newtls); 6374 if (flags & CLONE_CHILD_CLEARTID) 6375 ts->child_tidptr = child_tidptr; 6376 } else { 6377 fork_end(0); 6378 } 6379 } 6380 return ret; 6381 } 6382 6383 /* warning : doesn't handle linux specific flags... */ 6384 static int target_to_host_fcntl_cmd(int cmd) 6385 { 6386 switch(cmd) { 6387 case TARGET_F_DUPFD: 6388 case TARGET_F_GETFD: 6389 case TARGET_F_SETFD: 6390 case TARGET_F_GETFL: 6391 case TARGET_F_SETFL: 6392 return cmd; 6393 case TARGET_F_GETLK: 6394 return F_GETLK64; 6395 case TARGET_F_SETLK: 6396 return F_SETLK64; 6397 case TARGET_F_SETLKW: 6398 return F_SETLKW64; 6399 case TARGET_F_GETOWN: 6400 return F_GETOWN; 6401 case TARGET_F_SETOWN: 6402 return F_SETOWN; 6403 case TARGET_F_GETSIG: 6404 return F_GETSIG; 6405 case TARGET_F_SETSIG: 6406 return F_SETSIG; 6407 #if TARGET_ABI_BITS == 32 6408 case TARGET_F_GETLK64: 6409 return F_GETLK64; 6410 case TARGET_F_SETLK64: 6411 return F_SETLK64; 6412 case TARGET_F_SETLKW64: 6413 return F_SETLKW64; 6414 #endif 6415 case TARGET_F_SETLEASE: 6416 return F_SETLEASE; 6417 case TARGET_F_GETLEASE: 6418 return F_GETLEASE; 6419 #ifdef F_DUPFD_CLOEXEC 6420 case TARGET_F_DUPFD_CLOEXEC: 6421 return F_DUPFD_CLOEXEC; 6422 #endif 6423 case TARGET_F_NOTIFY: 6424 return F_NOTIFY; 6425 #ifdef F_GETOWN_EX 6426 case TARGET_F_GETOWN_EX: 6427 return F_GETOWN_EX; 6428 #endif 6429 #ifdef F_SETOWN_EX 6430 case TARGET_F_SETOWN_EX: 6431 return F_SETOWN_EX; 6432 #endif 6433 #ifdef F_SETPIPE_SZ 6434 case TARGET_F_SETPIPE_SZ: 6435 return F_SETPIPE_SZ; 6436 case TARGET_F_GETPIPE_SZ: 6437 return F_GETPIPE_SZ; 6438 #endif 6439 default: 6440 return -TARGET_EINVAL; 6441 } 6442 return -TARGET_EINVAL; 6443 } 6444 6445 #define TRANSTBL_CONVERT(a) { -1, TARGET_##a, -1, a } 6446 static const bitmask_transtbl flock_tbl[] = { 6447 TRANSTBL_CONVERT(F_RDLCK), 6448 TRANSTBL_CONVERT(F_WRLCK), 6449 TRANSTBL_CONVERT(F_UNLCK), 6450 TRANSTBL_CONVERT(F_EXLCK), 6451 TRANSTBL_CONVERT(F_SHLCK), 6452 { 0, 0, 0, 0 } 6453 }; 6454 6455 static inline abi_long copy_from_user_flock(struct flock64 *fl, 6456 abi_ulong target_flock_addr) 6457 { 6458 struct target_flock *target_fl; 6459 short l_type; 6460 6461 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6462 return -TARGET_EFAULT; 6463 } 6464 6465 __get_user(l_type, &target_fl->l_type); 6466 fl->l_type = target_to_host_bitmask(l_type, flock_tbl); 6467 __get_user(fl->l_whence, &target_fl->l_whence); 6468 __get_user(fl->l_start, &target_fl->l_start); 6469 __get_user(fl->l_len, &target_fl->l_len); 6470 __get_user(fl->l_pid, &target_fl->l_pid); 6471 unlock_user_struct(target_fl, target_flock_addr, 0); 6472 return 0; 6473 } 6474 6475 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr, 6476 const struct flock64 *fl) 6477 { 6478 struct target_flock *target_fl; 6479 short l_type; 6480 6481 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6482 return -TARGET_EFAULT; 6483 } 6484 6485 l_type = host_to_target_bitmask(fl->l_type, flock_tbl); 6486 __put_user(l_type, &target_fl->l_type); 6487 __put_user(fl->l_whence, &target_fl->l_whence); 6488 __put_user(fl->l_start, &target_fl->l_start); 6489 __put_user(fl->l_len, &target_fl->l_len); 6490 __put_user(fl->l_pid, &target_fl->l_pid); 6491 unlock_user_struct(target_fl, target_flock_addr, 1); 6492 return 0; 6493 } 6494 6495 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr); 6496 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl); 6497 6498 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32 6499 static inline abi_long copy_from_user_eabi_flock64(struct flock64 *fl, 6500 abi_ulong target_flock_addr) 6501 { 6502 struct target_eabi_flock64 *target_fl; 6503 short l_type; 6504 6505 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6506 return -TARGET_EFAULT; 6507 } 6508 6509 __get_user(l_type, &target_fl->l_type); 6510 fl->l_type = target_to_host_bitmask(l_type, flock_tbl); 6511 __get_user(fl->l_whence, &target_fl->l_whence); 6512 __get_user(fl->l_start, &target_fl->l_start); 6513 __get_user(fl->l_len, &target_fl->l_len); 6514 __get_user(fl->l_pid, &target_fl->l_pid); 6515 unlock_user_struct(target_fl, target_flock_addr, 0); 6516 return 0; 6517 } 6518 6519 static inline abi_long copy_to_user_eabi_flock64(abi_ulong target_flock_addr, 6520 const struct flock64 *fl) 6521 { 6522 struct target_eabi_flock64 *target_fl; 6523 short l_type; 6524 6525 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6526 return -TARGET_EFAULT; 6527 } 6528 6529 l_type = host_to_target_bitmask(fl->l_type, flock_tbl); 6530 __put_user(l_type, &target_fl->l_type); 6531 __put_user(fl->l_whence, &target_fl->l_whence); 6532 __put_user(fl->l_start, &target_fl->l_start); 6533 __put_user(fl->l_len, &target_fl->l_len); 6534 __put_user(fl->l_pid, &target_fl->l_pid); 6535 unlock_user_struct(target_fl, target_flock_addr, 1); 6536 return 0; 6537 } 6538 #endif 6539 6540 static inline abi_long copy_from_user_flock64(struct flock64 *fl, 6541 abi_ulong target_flock_addr) 6542 { 6543 struct target_flock64 *target_fl; 6544 short l_type; 6545 6546 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { 6547 return -TARGET_EFAULT; 6548 } 6549 6550 __get_user(l_type, &target_fl->l_type); 6551 fl->l_type = target_to_host_bitmask(l_type, flock_tbl); 6552 __get_user(fl->l_whence, &target_fl->l_whence); 6553 __get_user(fl->l_start, &target_fl->l_start); 6554 __get_user(fl->l_len, &target_fl->l_len); 6555 __get_user(fl->l_pid, &target_fl->l_pid); 6556 unlock_user_struct(target_fl, target_flock_addr, 0); 6557 return 0; 6558 } 6559 6560 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr, 6561 const struct flock64 *fl) 6562 { 6563 struct target_flock64 *target_fl; 6564 short l_type; 6565 6566 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { 6567 return -TARGET_EFAULT; 6568 } 6569 6570 l_type = host_to_target_bitmask(fl->l_type, flock_tbl); 6571 __put_user(l_type, &target_fl->l_type); 6572 __put_user(fl->l_whence, &target_fl->l_whence); 6573 __put_user(fl->l_start, &target_fl->l_start); 6574 __put_user(fl->l_len, &target_fl->l_len); 6575 __put_user(fl->l_pid, &target_fl->l_pid); 6576 unlock_user_struct(target_fl, target_flock_addr, 1); 6577 return 0; 6578 } 6579 6580 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) 6581 { 6582 struct flock64 fl64; 6583 #ifdef F_GETOWN_EX 6584 struct f_owner_ex fox; 6585 struct target_f_owner_ex *target_fox; 6586 #endif 6587 abi_long ret; 6588 int host_cmd = target_to_host_fcntl_cmd(cmd); 6589 6590 if (host_cmd == -TARGET_EINVAL) 6591 return host_cmd; 6592 6593 switch(cmd) { 6594 case TARGET_F_GETLK: 6595 ret = copy_from_user_flock(&fl64, arg); 6596 if (ret) { 6597 return ret; 6598 } 6599 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6600 if (ret == 0) { 6601 ret = copy_to_user_flock(arg, &fl64); 6602 } 6603 break; 6604 6605 case TARGET_F_SETLK: 6606 case TARGET_F_SETLKW: 6607 ret = copy_from_user_flock(&fl64, arg); 6608 if (ret) { 6609 return ret; 6610 } 6611 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6612 break; 6613 6614 case TARGET_F_GETLK64: 6615 ret = copy_from_user_flock64(&fl64, arg); 6616 if (ret) { 6617 return ret; 6618 } 6619 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6620 if (ret == 0) { 6621 ret = copy_to_user_flock64(arg, &fl64); 6622 } 6623 break; 6624 case TARGET_F_SETLK64: 6625 case TARGET_F_SETLKW64: 6626 ret = copy_from_user_flock64(&fl64, arg); 6627 if (ret) { 6628 return ret; 6629 } 6630 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); 6631 break; 6632 6633 case TARGET_F_GETFL: 6634 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 6635 if (ret >= 0) { 6636 ret = host_to_target_bitmask(ret, fcntl_flags_tbl); 6637 } 6638 break; 6639 6640 case TARGET_F_SETFL: 6641 ret = get_errno(safe_fcntl(fd, host_cmd, 6642 target_to_host_bitmask(arg, 6643 fcntl_flags_tbl))); 6644 break; 6645 6646 #ifdef F_GETOWN_EX 6647 case TARGET_F_GETOWN_EX: 6648 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 6649 if (ret >= 0) { 6650 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0)) 6651 return -TARGET_EFAULT; 6652 target_fox->type = tswap32(fox.type); 6653 target_fox->pid = tswap32(fox.pid); 6654 unlock_user_struct(target_fox, arg, 1); 6655 } 6656 break; 6657 #endif 6658 6659 #ifdef F_SETOWN_EX 6660 case TARGET_F_SETOWN_EX: 6661 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1)) 6662 return -TARGET_EFAULT; 6663 fox.type = tswap32(target_fox->type); 6664 fox.pid = tswap32(target_fox->pid); 6665 unlock_user_struct(target_fox, arg, 0); 6666 ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); 6667 break; 6668 #endif 6669 6670 case TARGET_F_SETOWN: 6671 case TARGET_F_GETOWN: 6672 case TARGET_F_SETSIG: 6673 case TARGET_F_GETSIG: 6674 case TARGET_F_SETLEASE: 6675 case TARGET_F_GETLEASE: 6676 case TARGET_F_SETPIPE_SZ: 6677 case TARGET_F_GETPIPE_SZ: 6678 ret = get_errno(safe_fcntl(fd, host_cmd, arg)); 6679 break; 6680 6681 default: 6682 ret = get_errno(safe_fcntl(fd, cmd, arg)); 6683 break; 6684 } 6685 return ret; 6686 } 6687 6688 #ifdef USE_UID16 6689 6690 static inline int high2lowuid(int uid) 6691 { 6692 if (uid > 65535) 6693 return 65534; 6694 else 6695 return uid; 6696 } 6697 6698 static inline int high2lowgid(int gid) 6699 { 6700 if (gid > 65535) 6701 return 65534; 6702 else 6703 return gid; 6704 } 6705 6706 static inline int low2highuid(int uid) 6707 { 6708 if ((int16_t)uid == -1) 6709 return -1; 6710 else 6711 return uid; 6712 } 6713 6714 static inline int low2highgid(int gid) 6715 { 6716 if ((int16_t)gid == -1) 6717 return -1; 6718 else 6719 return gid; 6720 } 6721 static inline int tswapid(int id) 6722 { 6723 return tswap16(id); 6724 } 6725 6726 #define put_user_id(x, gaddr) put_user_u16(x, gaddr) 6727 6728 #else /* !USE_UID16 */ 6729 static inline int high2lowuid(int uid) 6730 { 6731 return uid; 6732 } 6733 static inline int high2lowgid(int gid) 6734 { 6735 return gid; 6736 } 6737 static inline int low2highuid(int uid) 6738 { 6739 return uid; 6740 } 6741 static inline int low2highgid(int gid) 6742 { 6743 return gid; 6744 } 6745 static inline int tswapid(int id) 6746 { 6747 return tswap32(id); 6748 } 6749 6750 #define put_user_id(x, gaddr) put_user_u32(x, gaddr) 6751 6752 #endif /* USE_UID16 */ 6753 6754 /* We must do direct syscalls for setting UID/GID, because we want to 6755 * implement the Linux system call semantics of "change only for this thread", 6756 * not the libc/POSIX semantics of "change for all threads in process". 6757 * (See http://ewontfix.com/17/ for more details.) 6758 * We use the 32-bit version of the syscalls if present; if it is not 6759 * then either the host architecture supports 32-bit UIDs natively with 6760 * the standard syscall, or the 16-bit UID is the best we can do. 6761 */ 6762 #ifdef __NR_setuid32 6763 #define __NR_sys_setuid __NR_setuid32 6764 #else 6765 #define __NR_sys_setuid __NR_setuid 6766 #endif 6767 #ifdef __NR_setgid32 6768 #define __NR_sys_setgid __NR_setgid32 6769 #else 6770 #define __NR_sys_setgid __NR_setgid 6771 #endif 6772 #ifdef __NR_setresuid32 6773 #define __NR_sys_setresuid __NR_setresuid32 6774 #else 6775 #define __NR_sys_setresuid __NR_setresuid 6776 #endif 6777 #ifdef __NR_setresgid32 6778 #define __NR_sys_setresgid __NR_setresgid32 6779 #else 6780 #define __NR_sys_setresgid __NR_setresgid 6781 #endif 6782 6783 _syscall1(int, sys_setuid, uid_t, uid) 6784 _syscall1(int, sys_setgid, gid_t, gid) 6785 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid) 6786 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid) 6787 6788 void syscall_init(void) 6789 { 6790 IOCTLEntry *ie; 6791 const argtype *arg_type; 6792 int size; 6793 int i; 6794 6795 thunk_init(STRUCT_MAX); 6796 6797 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def); 6798 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def); 6799 #include "syscall_types.h" 6800 #undef STRUCT 6801 #undef STRUCT_SPECIAL 6802 6803 /* Build target_to_host_errno_table[] table from 6804 * host_to_target_errno_table[]. */ 6805 for (i = 0; i < ERRNO_TABLE_SIZE; i++) { 6806 target_to_host_errno_table[host_to_target_errno_table[i]] = i; 6807 } 6808 6809 /* we patch the ioctl size if necessary. We rely on the fact that 6810 no ioctl has all the bits at '1' in the size field */ 6811 ie = ioctl_entries; 6812 while (ie->target_cmd != 0) { 6813 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) == 6814 TARGET_IOC_SIZEMASK) { 6815 arg_type = ie->arg_type; 6816 if (arg_type[0] != TYPE_PTR) { 6817 fprintf(stderr, "cannot patch size for ioctl 0x%x\n", 6818 ie->target_cmd); 6819 exit(1); 6820 } 6821 arg_type++; 6822 size = thunk_type_size(arg_type, 0); 6823 ie->target_cmd = (ie->target_cmd & 6824 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) | 6825 (size << TARGET_IOC_SIZESHIFT); 6826 } 6827 6828 /* automatic consistency check if same arch */ 6829 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 6830 (defined(__x86_64__) && defined(TARGET_X86_64)) 6831 if (unlikely(ie->target_cmd != ie->host_cmd)) { 6832 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n", 6833 ie->name, ie->target_cmd, ie->host_cmd); 6834 } 6835 #endif 6836 ie++; 6837 } 6838 } 6839 6840 #if TARGET_ABI_BITS == 32 6841 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1) 6842 { 6843 #ifdef TARGET_WORDS_BIGENDIAN 6844 return ((uint64_t)word0 << 32) | word1; 6845 #else 6846 return ((uint64_t)word1 << 32) | word0; 6847 #endif 6848 } 6849 #else /* TARGET_ABI_BITS == 32 */ 6850 static inline uint64_t target_offset64(uint64_t word0, uint64_t word1) 6851 { 6852 return word0; 6853 } 6854 #endif /* TARGET_ABI_BITS != 32 */ 6855 6856 #ifdef TARGET_NR_truncate64 6857 static inline abi_long target_truncate64(void *cpu_env, const char *arg1, 6858 abi_long arg2, 6859 abi_long arg3, 6860 abi_long arg4) 6861 { 6862 if (regpairs_aligned(cpu_env)) { 6863 arg2 = arg3; 6864 arg3 = arg4; 6865 } 6866 return get_errno(truncate64(arg1, target_offset64(arg2, arg3))); 6867 } 6868 #endif 6869 6870 #ifdef TARGET_NR_ftruncate64 6871 static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1, 6872 abi_long arg2, 6873 abi_long arg3, 6874 abi_long arg4) 6875 { 6876 if (regpairs_aligned(cpu_env)) { 6877 arg2 = arg3; 6878 arg3 = arg4; 6879 } 6880 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3))); 6881 } 6882 #endif 6883 6884 static inline abi_long target_to_host_timespec(struct timespec *host_ts, 6885 abi_ulong target_addr) 6886 { 6887 struct target_timespec *target_ts; 6888 6889 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) 6890 return -TARGET_EFAULT; 6891 __get_user(host_ts->tv_sec, &target_ts->tv_sec); 6892 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); 6893 unlock_user_struct(target_ts, target_addr, 0); 6894 return 0; 6895 } 6896 6897 static inline abi_long host_to_target_timespec(abi_ulong target_addr, 6898 struct timespec *host_ts) 6899 { 6900 struct target_timespec *target_ts; 6901 6902 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) 6903 return -TARGET_EFAULT; 6904 __put_user(host_ts->tv_sec, &target_ts->tv_sec); 6905 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec); 6906 unlock_user_struct(target_ts, target_addr, 1); 6907 return 0; 6908 } 6909 6910 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_itspec, 6911 abi_ulong target_addr) 6912 { 6913 struct target_itimerspec *target_itspec; 6914 6915 if (!lock_user_struct(VERIFY_READ, target_itspec, target_addr, 1)) { 6916 return -TARGET_EFAULT; 6917 } 6918 6919 host_itspec->it_interval.tv_sec = 6920 tswapal(target_itspec->it_interval.tv_sec); 6921 host_itspec->it_interval.tv_nsec = 6922 tswapal(target_itspec->it_interval.tv_nsec); 6923 host_itspec->it_value.tv_sec = tswapal(target_itspec->it_value.tv_sec); 6924 host_itspec->it_value.tv_nsec = tswapal(target_itspec->it_value.tv_nsec); 6925 6926 unlock_user_struct(target_itspec, target_addr, 1); 6927 return 0; 6928 } 6929 6930 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr, 6931 struct itimerspec *host_its) 6932 { 6933 struct target_itimerspec *target_itspec; 6934 6935 if (!lock_user_struct(VERIFY_WRITE, target_itspec, target_addr, 0)) { 6936 return -TARGET_EFAULT; 6937 } 6938 6939 target_itspec->it_interval.tv_sec = tswapal(host_its->it_interval.tv_sec); 6940 target_itspec->it_interval.tv_nsec = tswapal(host_its->it_interval.tv_nsec); 6941 6942 target_itspec->it_value.tv_sec = tswapal(host_its->it_value.tv_sec); 6943 target_itspec->it_value.tv_nsec = tswapal(host_its->it_value.tv_nsec); 6944 6945 unlock_user_struct(target_itspec, target_addr, 0); 6946 return 0; 6947 } 6948 6949 static inline abi_long target_to_host_timex(struct timex *host_tx, 6950 abi_long target_addr) 6951 { 6952 struct target_timex *target_tx; 6953 6954 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) { 6955 return -TARGET_EFAULT; 6956 } 6957 6958 __get_user(host_tx->modes, &target_tx->modes); 6959 __get_user(host_tx->offset, &target_tx->offset); 6960 __get_user(host_tx->freq, &target_tx->freq); 6961 __get_user(host_tx->maxerror, &target_tx->maxerror); 6962 __get_user(host_tx->esterror, &target_tx->esterror); 6963 __get_user(host_tx->status, &target_tx->status); 6964 __get_user(host_tx->constant, &target_tx->constant); 6965 __get_user(host_tx->precision, &target_tx->precision); 6966 __get_user(host_tx->tolerance, &target_tx->tolerance); 6967 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 6968 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 6969 __get_user(host_tx->tick, &target_tx->tick); 6970 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq); 6971 __get_user(host_tx->jitter, &target_tx->jitter); 6972 __get_user(host_tx->shift, &target_tx->shift); 6973 __get_user(host_tx->stabil, &target_tx->stabil); 6974 __get_user(host_tx->jitcnt, &target_tx->jitcnt); 6975 __get_user(host_tx->calcnt, &target_tx->calcnt); 6976 __get_user(host_tx->errcnt, &target_tx->errcnt); 6977 __get_user(host_tx->stbcnt, &target_tx->stbcnt); 6978 __get_user(host_tx->tai, &target_tx->tai); 6979 6980 unlock_user_struct(target_tx, target_addr, 0); 6981 return 0; 6982 } 6983 6984 static inline abi_long host_to_target_timex(abi_long target_addr, 6985 struct timex *host_tx) 6986 { 6987 struct target_timex *target_tx; 6988 6989 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) { 6990 return -TARGET_EFAULT; 6991 } 6992 6993 __put_user(host_tx->modes, &target_tx->modes); 6994 __put_user(host_tx->offset, &target_tx->offset); 6995 __put_user(host_tx->freq, &target_tx->freq); 6996 __put_user(host_tx->maxerror, &target_tx->maxerror); 6997 __put_user(host_tx->esterror, &target_tx->esterror); 6998 __put_user(host_tx->status, &target_tx->status); 6999 __put_user(host_tx->constant, &target_tx->constant); 7000 __put_user(host_tx->precision, &target_tx->precision); 7001 __put_user(host_tx->tolerance, &target_tx->tolerance); 7002 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec); 7003 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec); 7004 __put_user(host_tx->tick, &target_tx->tick); 7005 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq); 7006 __put_user(host_tx->jitter, &target_tx->jitter); 7007 __put_user(host_tx->shift, &target_tx->shift); 7008 __put_user(host_tx->stabil, &target_tx->stabil); 7009 __put_user(host_tx->jitcnt, &target_tx->jitcnt); 7010 __put_user(host_tx->calcnt, &target_tx->calcnt); 7011 __put_user(host_tx->errcnt, &target_tx->errcnt); 7012 __put_user(host_tx->stbcnt, &target_tx->stbcnt); 7013 __put_user(host_tx->tai, &target_tx->tai); 7014 7015 unlock_user_struct(target_tx, target_addr, 1); 7016 return 0; 7017 } 7018 7019 7020 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp, 7021 abi_ulong target_addr) 7022 { 7023 struct target_sigevent *target_sevp; 7024 7025 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) { 7026 return -TARGET_EFAULT; 7027 } 7028 7029 /* This union is awkward on 64 bit systems because it has a 32 bit 7030 * integer and a pointer in it; we follow the conversion approach 7031 * used for handling sigval types in signal.c so the guest should get 7032 * the correct value back even if we did a 64 bit byteswap and it's 7033 * using the 32 bit integer. 7034 */ 7035 host_sevp->sigev_value.sival_ptr = 7036 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr); 7037 host_sevp->sigev_signo = 7038 target_to_host_signal(tswap32(target_sevp->sigev_signo)); 7039 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify); 7040 host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid); 7041 7042 unlock_user_struct(target_sevp, target_addr, 1); 7043 return 0; 7044 } 7045 7046 #if defined(TARGET_NR_mlockall) 7047 static inline int target_to_host_mlockall_arg(int arg) 7048 { 7049 int result = 0; 7050 7051 if (arg & TARGET_MLOCKALL_MCL_CURRENT) { 7052 result |= MCL_CURRENT; 7053 } 7054 if (arg & TARGET_MLOCKALL_MCL_FUTURE) { 7055 result |= MCL_FUTURE; 7056 } 7057 return result; 7058 } 7059 #endif 7060 7061 static inline abi_long host_to_target_stat64(void *cpu_env, 7062 abi_ulong target_addr, 7063 struct stat *host_st) 7064 { 7065 #if defined(TARGET_ARM) && defined(TARGET_ABI32) 7066 if (((CPUARMState *)cpu_env)->eabi) { 7067 struct target_eabi_stat64 *target_st; 7068 7069 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7070 return -TARGET_EFAULT; 7071 memset(target_st, 0, sizeof(struct target_eabi_stat64)); 7072 __put_user(host_st->st_dev, &target_st->st_dev); 7073 __put_user(host_st->st_ino, &target_st->st_ino); 7074 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7075 __put_user(host_st->st_ino, &target_st->__st_ino); 7076 #endif 7077 __put_user(host_st->st_mode, &target_st->st_mode); 7078 __put_user(host_st->st_nlink, &target_st->st_nlink); 7079 __put_user(host_st->st_uid, &target_st->st_uid); 7080 __put_user(host_st->st_gid, &target_st->st_gid); 7081 __put_user(host_st->st_rdev, &target_st->st_rdev); 7082 __put_user(host_st->st_size, &target_st->st_size); 7083 __put_user(host_st->st_blksize, &target_st->st_blksize); 7084 __put_user(host_st->st_blocks, &target_st->st_blocks); 7085 __put_user(host_st->st_atime, &target_st->target_st_atime); 7086 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7087 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7088 unlock_user_struct(target_st, target_addr, 1); 7089 } else 7090 #endif 7091 { 7092 #if defined(TARGET_HAS_STRUCT_STAT64) 7093 struct target_stat64 *target_st; 7094 #else 7095 struct target_stat *target_st; 7096 #endif 7097 7098 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) 7099 return -TARGET_EFAULT; 7100 memset(target_st, 0, sizeof(*target_st)); 7101 __put_user(host_st->st_dev, &target_st->st_dev); 7102 __put_user(host_st->st_ino, &target_st->st_ino); 7103 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO 7104 __put_user(host_st->st_ino, &target_st->__st_ino); 7105 #endif 7106 __put_user(host_st->st_mode, &target_st->st_mode); 7107 __put_user(host_st->st_nlink, &target_st->st_nlink); 7108 __put_user(host_st->st_uid, &target_st->st_uid); 7109 __put_user(host_st->st_gid, &target_st->st_gid); 7110 __put_user(host_st->st_rdev, &target_st->st_rdev); 7111 /* XXX: better use of kernel struct */ 7112 __put_user(host_st->st_size, &target_st->st_size); 7113 __put_user(host_st->st_blksize, &target_st->st_blksize); 7114 __put_user(host_st->st_blocks, &target_st->st_blocks); 7115 __put_user(host_st->st_atime, &target_st->target_st_atime); 7116 __put_user(host_st->st_mtime, &target_st->target_st_mtime); 7117 __put_user(host_st->st_ctime, &target_st->target_st_ctime); 7118 unlock_user_struct(target_st, target_addr, 1); 7119 } 7120 7121 return 0; 7122 } 7123 7124 /* ??? Using host futex calls even when target atomic operations 7125 are not really atomic probably breaks things. However implementing 7126 futexes locally would make futexes shared between multiple processes 7127 tricky. However they're probably useless because guest atomic 7128 operations won't work either. */ 7129 static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout, 7130 target_ulong uaddr2, int val3) 7131 { 7132 struct timespec ts, *pts; 7133 int base_op; 7134 7135 /* ??? We assume FUTEX_* constants are the same on both host 7136 and target. */ 7137 #ifdef FUTEX_CMD_MASK 7138 base_op = op & FUTEX_CMD_MASK; 7139 #else 7140 base_op = op; 7141 #endif 7142 switch (base_op) { 7143 case FUTEX_WAIT: 7144 case FUTEX_WAIT_BITSET: 7145 if (timeout) { 7146 pts = &ts; 7147 target_to_host_timespec(pts, timeout); 7148 } else { 7149 pts = NULL; 7150 } 7151 return get_errno(safe_futex(g2h(uaddr), op, tswap32(val), 7152 pts, NULL, val3)); 7153 case FUTEX_WAKE: 7154 return get_errno(safe_futex(g2h(uaddr), op, val, NULL, NULL, 0)); 7155 case FUTEX_FD: 7156 return get_errno(safe_futex(g2h(uaddr), op, val, NULL, NULL, 0)); 7157 case FUTEX_REQUEUE: 7158 case FUTEX_CMP_REQUEUE: 7159 case FUTEX_WAKE_OP: 7160 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the 7161 TIMEOUT parameter is interpreted as a uint32_t by the kernel. 7162 But the prototype takes a `struct timespec *'; insert casts 7163 to satisfy the compiler. We do not need to tswap TIMEOUT 7164 since it's not compared to guest memory. */ 7165 pts = (struct timespec *)(uintptr_t) timeout; 7166 return get_errno(safe_futex(g2h(uaddr), op, val, pts, 7167 g2h(uaddr2), 7168 (base_op == FUTEX_CMP_REQUEUE 7169 ? tswap32(val3) 7170 : val3))); 7171 default: 7172 return -TARGET_ENOSYS; 7173 } 7174 } 7175 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7176 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname, 7177 abi_long handle, abi_long mount_id, 7178 abi_long flags) 7179 { 7180 struct file_handle *target_fh; 7181 struct file_handle *fh; 7182 int mid = 0; 7183 abi_long ret; 7184 char *name; 7185 unsigned int size, total_size; 7186 7187 if (get_user_s32(size, handle)) { 7188 return -TARGET_EFAULT; 7189 } 7190 7191 name = lock_user_string(pathname); 7192 if (!name) { 7193 return -TARGET_EFAULT; 7194 } 7195 7196 total_size = sizeof(struct file_handle) + size; 7197 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0); 7198 if (!target_fh) { 7199 unlock_user(name, pathname, 0); 7200 return -TARGET_EFAULT; 7201 } 7202 7203 fh = g_malloc0(total_size); 7204 fh->handle_bytes = size; 7205 7206 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags)); 7207 unlock_user(name, pathname, 0); 7208 7209 /* man name_to_handle_at(2): 7210 * Other than the use of the handle_bytes field, the caller should treat 7211 * the file_handle structure as an opaque data type 7212 */ 7213 7214 memcpy(target_fh, fh, total_size); 7215 target_fh->handle_bytes = tswap32(fh->handle_bytes); 7216 target_fh->handle_type = tswap32(fh->handle_type); 7217 g_free(fh); 7218 unlock_user(target_fh, handle, total_size); 7219 7220 if (put_user_s32(mid, mount_id)) { 7221 return -TARGET_EFAULT; 7222 } 7223 7224 return ret; 7225 7226 } 7227 #endif 7228 7229 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7230 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle, 7231 abi_long flags) 7232 { 7233 struct file_handle *target_fh; 7234 struct file_handle *fh; 7235 unsigned int size, total_size; 7236 abi_long ret; 7237 7238 if (get_user_s32(size, handle)) { 7239 return -TARGET_EFAULT; 7240 } 7241 7242 total_size = sizeof(struct file_handle) + size; 7243 target_fh = lock_user(VERIFY_READ, handle, total_size, 1); 7244 if (!target_fh) { 7245 return -TARGET_EFAULT; 7246 } 7247 7248 fh = g_memdup(target_fh, total_size); 7249 fh->handle_bytes = size; 7250 fh->handle_type = tswap32(target_fh->handle_type); 7251 7252 ret = get_errno(open_by_handle_at(mount_fd, fh, 7253 target_to_host_bitmask(flags, fcntl_flags_tbl))); 7254 7255 g_free(fh); 7256 7257 unlock_user(target_fh, handle, total_size); 7258 7259 return ret; 7260 } 7261 #endif 7262 7263 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4) 7264 7265 /* signalfd siginfo conversion */ 7266 7267 static void 7268 host_to_target_signalfd_siginfo(struct signalfd_siginfo *tinfo, 7269 const struct signalfd_siginfo *info) 7270 { 7271 int sig = host_to_target_signal(info->ssi_signo); 7272 7273 /* linux/signalfd.h defines a ssi_addr_lsb 7274 * not defined in sys/signalfd.h but used by some kernels 7275 */ 7276 7277 #ifdef BUS_MCEERR_AO 7278 if (tinfo->ssi_signo == SIGBUS && 7279 (tinfo->ssi_code == BUS_MCEERR_AR || 7280 tinfo->ssi_code == BUS_MCEERR_AO)) { 7281 uint16_t *ssi_addr_lsb = (uint16_t *)(&info->ssi_addr + 1); 7282 uint16_t *tssi_addr_lsb = (uint16_t *)(&tinfo->ssi_addr + 1); 7283 *tssi_addr_lsb = tswap16(*ssi_addr_lsb); 7284 } 7285 #endif 7286 7287 tinfo->ssi_signo = tswap32(sig); 7288 tinfo->ssi_errno = tswap32(tinfo->ssi_errno); 7289 tinfo->ssi_code = tswap32(info->ssi_code); 7290 tinfo->ssi_pid = tswap32(info->ssi_pid); 7291 tinfo->ssi_uid = tswap32(info->ssi_uid); 7292 tinfo->ssi_fd = tswap32(info->ssi_fd); 7293 tinfo->ssi_tid = tswap32(info->ssi_tid); 7294 tinfo->ssi_band = tswap32(info->ssi_band); 7295 tinfo->ssi_overrun = tswap32(info->ssi_overrun); 7296 tinfo->ssi_trapno = tswap32(info->ssi_trapno); 7297 tinfo->ssi_status = tswap32(info->ssi_status); 7298 tinfo->ssi_int = tswap32(info->ssi_int); 7299 tinfo->ssi_ptr = tswap64(info->ssi_ptr); 7300 tinfo->ssi_utime = tswap64(info->ssi_utime); 7301 tinfo->ssi_stime = tswap64(info->ssi_stime); 7302 tinfo->ssi_addr = tswap64(info->ssi_addr); 7303 } 7304 7305 static abi_long host_to_target_data_signalfd(void *buf, size_t len) 7306 { 7307 int i; 7308 7309 for (i = 0; i < len; i += sizeof(struct signalfd_siginfo)) { 7310 host_to_target_signalfd_siginfo(buf + i, buf + i); 7311 } 7312 7313 return len; 7314 } 7315 7316 static TargetFdTrans target_signalfd_trans = { 7317 .host_to_target_data = host_to_target_data_signalfd, 7318 }; 7319 7320 static abi_long do_signalfd4(int fd, abi_long mask, int flags) 7321 { 7322 int host_flags; 7323 target_sigset_t *target_mask; 7324 sigset_t host_mask; 7325 abi_long ret; 7326 7327 if (flags & ~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC)) { 7328 return -TARGET_EINVAL; 7329 } 7330 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) { 7331 return -TARGET_EFAULT; 7332 } 7333 7334 target_to_host_sigset(&host_mask, target_mask); 7335 7336 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); 7337 7338 ret = get_errno(signalfd(fd, &host_mask, host_flags)); 7339 if (ret >= 0) { 7340 fd_trans_register(ret, &target_signalfd_trans); 7341 } 7342 7343 unlock_user_struct(target_mask, mask, 0); 7344 7345 return ret; 7346 } 7347 #endif 7348 7349 /* Map host to target signal numbers for the wait family of syscalls. 7350 Assume all other status bits are the same. */ 7351 int host_to_target_waitstatus(int status) 7352 { 7353 if (WIFSIGNALED(status)) { 7354 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f); 7355 } 7356 if (WIFSTOPPED(status)) { 7357 return (host_to_target_signal(WSTOPSIG(status)) << 8) 7358 | (status & 0xff); 7359 } 7360 return status; 7361 } 7362 7363 static int open_self_cmdline(void *cpu_env, int fd) 7364 { 7365 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env); 7366 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm; 7367 int i; 7368 7369 for (i = 0; i < bprm->argc; i++) { 7370 size_t len = strlen(bprm->argv[i]) + 1; 7371 7372 if (write(fd, bprm->argv[i], len) != len) { 7373 return -1; 7374 } 7375 } 7376 7377 return 0; 7378 } 7379 7380 static int open_self_maps(void *cpu_env, int fd) 7381 { 7382 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env); 7383 TaskState *ts = cpu->opaque; 7384 FILE *fp; 7385 char *line = NULL; 7386 size_t len = 0; 7387 ssize_t read; 7388 7389 fp = fopen("/proc/self/maps", "r"); 7390 if (fp == NULL) { 7391 return -1; 7392 } 7393 7394 while ((read = getline(&line, &len, fp)) != -1) { 7395 int fields, dev_maj, dev_min, inode; 7396 uint64_t min, max, offset; 7397 char flag_r, flag_w, flag_x, flag_p; 7398 char path[512] = ""; 7399 fields = sscanf(line, "%"PRIx64"-%"PRIx64" %c%c%c%c %"PRIx64" %x:%x %d" 7400 " %512s", &min, &max, &flag_r, &flag_w, &flag_x, 7401 &flag_p, &offset, &dev_maj, &dev_min, &inode, path); 7402 7403 if ((fields < 10) || (fields > 11)) { 7404 continue; 7405 } 7406 if (h2g_valid(min)) { 7407 int flags = page_get_flags(h2g(min)); 7408 max = h2g_valid(max - 1) ? max : (uintptr_t)g2h(GUEST_ADDR_MAX); 7409 if (page_check_range(h2g(min), max - min, flags) == -1) { 7410 continue; 7411 } 7412 if (h2g(min) == ts->info->stack_limit) { 7413 pstrcpy(path, sizeof(path), " [stack]"); 7414 } 7415 dprintf(fd, TARGET_ABI_FMT_lx "-" TARGET_ABI_FMT_lx 7416 " %c%c%c%c %08" PRIx64 " %02x:%02x %d %s%s\n", 7417 h2g(min), h2g(max - 1) + 1, flag_r, flag_w, 7418 flag_x, flag_p, offset, dev_maj, dev_min, inode, 7419 path[0] ? " " : "", path); 7420 } 7421 } 7422 7423 free(line); 7424 fclose(fp); 7425 7426 return 0; 7427 } 7428 7429 static int open_self_stat(void *cpu_env, int fd) 7430 { 7431 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env); 7432 TaskState *ts = cpu->opaque; 7433 abi_ulong start_stack = ts->info->start_stack; 7434 int i; 7435 7436 for (i = 0; i < 44; i++) { 7437 char buf[128]; 7438 int len; 7439 uint64_t val = 0; 7440 7441 if (i == 0) { 7442 /* pid */ 7443 val = getpid(); 7444 snprintf(buf, sizeof(buf), "%"PRId64 " ", val); 7445 } else if (i == 1) { 7446 /* app name */ 7447 snprintf(buf, sizeof(buf), "(%s) ", ts->bprm->argv[0]); 7448 } else if (i == 27) { 7449 /* stack bottom */ 7450 val = start_stack; 7451 snprintf(buf, sizeof(buf), "%"PRId64 " ", val); 7452 } else { 7453 /* for the rest, there is MasterCard */ 7454 snprintf(buf, sizeof(buf), "0%c", i == 43 ? '\n' : ' '); 7455 } 7456 7457 len = strlen(buf); 7458 if (write(fd, buf, len) != len) { 7459 return -1; 7460 } 7461 } 7462 7463 return 0; 7464 } 7465 7466 static int open_self_auxv(void *cpu_env, int fd) 7467 { 7468 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env); 7469 TaskState *ts = cpu->opaque; 7470 abi_ulong auxv = ts->info->saved_auxv; 7471 abi_ulong len = ts->info->auxv_len; 7472 char *ptr; 7473 7474 /* 7475 * Auxiliary vector is stored in target process stack. 7476 * read in whole auxv vector and copy it to file 7477 */ 7478 ptr = lock_user(VERIFY_READ, auxv, len, 0); 7479 if (ptr != NULL) { 7480 while (len > 0) { 7481 ssize_t r; 7482 r = write(fd, ptr, len); 7483 if (r <= 0) { 7484 break; 7485 } 7486 len -= r; 7487 ptr += r; 7488 } 7489 lseek(fd, 0, SEEK_SET); 7490 unlock_user(ptr, auxv, len); 7491 } 7492 7493 return 0; 7494 } 7495 7496 static int is_proc_myself(const char *filename, const char *entry) 7497 { 7498 if (!strncmp(filename, "/proc/", strlen("/proc/"))) { 7499 filename += strlen("/proc/"); 7500 if (!strncmp(filename, "self/", strlen("self/"))) { 7501 filename += strlen("self/"); 7502 } else if (*filename >= '1' && *filename <= '9') { 7503 char myself[80]; 7504 snprintf(myself, sizeof(myself), "%d/", getpid()); 7505 if (!strncmp(filename, myself, strlen(myself))) { 7506 filename += strlen(myself); 7507 } else { 7508 return 0; 7509 } 7510 } else { 7511 return 0; 7512 } 7513 if (!strcmp(filename, entry)) { 7514 return 1; 7515 } 7516 } 7517 return 0; 7518 } 7519 7520 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 7521 static int is_proc(const char *filename, const char *entry) 7522 { 7523 return strcmp(filename, entry) == 0; 7524 } 7525 7526 static int open_net_route(void *cpu_env, int fd) 7527 { 7528 FILE *fp; 7529 char *line = NULL; 7530 size_t len = 0; 7531 ssize_t read; 7532 7533 fp = fopen("/proc/net/route", "r"); 7534 if (fp == NULL) { 7535 return -1; 7536 } 7537 7538 /* read header */ 7539 7540 read = getline(&line, &len, fp); 7541 dprintf(fd, "%s", line); 7542 7543 /* read routes */ 7544 7545 while ((read = getline(&line, &len, fp)) != -1) { 7546 char iface[16]; 7547 uint32_t dest, gw, mask; 7548 unsigned int flags, refcnt, use, metric, mtu, window, irtt; 7549 sscanf(line, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 7550 iface, &dest, &gw, &flags, &refcnt, &use, &metric, 7551 &mask, &mtu, &window, &irtt); 7552 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", 7553 iface, tswap32(dest), tswap32(gw), flags, refcnt, use, 7554 metric, tswap32(mask), mtu, window, irtt); 7555 } 7556 7557 free(line); 7558 fclose(fp); 7559 7560 return 0; 7561 } 7562 #endif 7563 7564 static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode) 7565 { 7566 struct fake_open { 7567 const char *filename; 7568 int (*fill)(void *cpu_env, int fd); 7569 int (*cmp)(const char *s1, const char *s2); 7570 }; 7571 const struct fake_open *fake_open; 7572 static const struct fake_open fakes[] = { 7573 { "maps", open_self_maps, is_proc_myself }, 7574 { "stat", open_self_stat, is_proc_myself }, 7575 { "auxv", open_self_auxv, is_proc_myself }, 7576 { "cmdline", open_self_cmdline, is_proc_myself }, 7577 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 7578 { "/proc/net/route", open_net_route, is_proc }, 7579 #endif 7580 { NULL, NULL, NULL } 7581 }; 7582 7583 if (is_proc_myself(pathname, "exe")) { 7584 int execfd = qemu_getauxval(AT_EXECFD); 7585 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode); 7586 } 7587 7588 for (fake_open = fakes; fake_open->filename; fake_open++) { 7589 if (fake_open->cmp(pathname, fake_open->filename)) { 7590 break; 7591 } 7592 } 7593 7594 if (fake_open->filename) { 7595 const char *tmpdir; 7596 char filename[PATH_MAX]; 7597 int fd, r; 7598 7599 /* create temporary file to map stat to */ 7600 tmpdir = getenv("TMPDIR"); 7601 if (!tmpdir) 7602 tmpdir = "/tmp"; 7603 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir); 7604 fd = mkstemp(filename); 7605 if (fd < 0) { 7606 return fd; 7607 } 7608 unlink(filename); 7609 7610 if ((r = fake_open->fill(cpu_env, fd))) { 7611 int e = errno; 7612 close(fd); 7613 errno = e; 7614 return r; 7615 } 7616 lseek(fd, 0, SEEK_SET); 7617 7618 return fd; 7619 } 7620 7621 return safe_openat(dirfd, path(pathname), flags, mode); 7622 } 7623 7624 #define TIMER_MAGIC 0x0caf0000 7625 #define TIMER_MAGIC_MASK 0xffff0000 7626 7627 /* Convert QEMU provided timer ID back to internal 16bit index format */ 7628 static target_timer_t get_timer_id(abi_long arg) 7629 { 7630 target_timer_t timerid = arg; 7631 7632 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) { 7633 return -TARGET_EINVAL; 7634 } 7635 7636 timerid &= 0xffff; 7637 7638 if (timerid >= ARRAY_SIZE(g_posix_timers)) { 7639 return -TARGET_EINVAL; 7640 } 7641 7642 return timerid; 7643 } 7644 7645 static abi_long swap_data_eventfd(void *buf, size_t len) 7646 { 7647 uint64_t *counter = buf; 7648 int i; 7649 7650 if (len < sizeof(uint64_t)) { 7651 return -EINVAL; 7652 } 7653 7654 for (i = 0; i < len; i += sizeof(uint64_t)) { 7655 *counter = tswap64(*counter); 7656 counter++; 7657 } 7658 7659 return len; 7660 } 7661 7662 static TargetFdTrans target_eventfd_trans = { 7663 .host_to_target_data = swap_data_eventfd, 7664 .target_to_host_data = swap_data_eventfd, 7665 }; 7666 7667 #if (defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)) || \ 7668 (defined(CONFIG_INOTIFY1) && defined(TARGET_NR_inotify_init1) && \ 7669 defined(__NR_inotify_init1)) 7670 static abi_long host_to_target_data_inotify(void *buf, size_t len) 7671 { 7672 struct inotify_event *ev; 7673 int i; 7674 uint32_t name_len; 7675 7676 for (i = 0; i < len; i += sizeof(struct inotify_event) + name_len) { 7677 ev = (struct inotify_event *)((char *)buf + i); 7678 name_len = ev->len; 7679 7680 ev->wd = tswap32(ev->wd); 7681 ev->mask = tswap32(ev->mask); 7682 ev->cookie = tswap32(ev->cookie); 7683 ev->len = tswap32(name_len); 7684 } 7685 7686 return len; 7687 } 7688 7689 static TargetFdTrans target_inotify_trans = { 7690 .host_to_target_data = host_to_target_data_inotify, 7691 }; 7692 #endif 7693 7694 /* do_syscall() should always have a single exit point at the end so 7695 that actions, such as logging of syscall results, can be performed. 7696 All errnos that do_syscall() returns must be -TARGET_<errcode>. */ 7697 abi_long do_syscall(void *cpu_env, int num, abi_long arg1, 7698 abi_long arg2, abi_long arg3, abi_long arg4, 7699 abi_long arg5, abi_long arg6, abi_long arg7, 7700 abi_long arg8) 7701 { 7702 CPUState *cpu = ENV_GET_CPU(cpu_env); 7703 abi_long ret; 7704 struct stat st; 7705 struct statfs stfs; 7706 void *p; 7707 7708 #if defined(DEBUG_ERESTARTSYS) 7709 /* Debug-only code for exercising the syscall-restart code paths 7710 * in the per-architecture cpu main loops: restart every syscall 7711 * the guest makes once before letting it through. 7712 */ 7713 { 7714 static int flag; 7715 7716 flag = !flag; 7717 if (flag) { 7718 return -TARGET_ERESTARTSYS; 7719 } 7720 } 7721 #endif 7722 7723 #ifdef DEBUG 7724 gemu_log("syscall %d", num); 7725 #endif 7726 trace_guest_user_syscall(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8); 7727 if(do_strace) 7728 print_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6); 7729 7730 switch(num) { 7731 case TARGET_NR_exit: 7732 /* In old applications this may be used to implement _exit(2). 7733 However in threaded applictions it is used for thread termination, 7734 and _exit_group is used for application termination. 7735 Do thread termination if we have more then one thread. */ 7736 7737 if (block_signals()) { 7738 ret = -TARGET_ERESTARTSYS; 7739 break; 7740 } 7741 7742 cpu_list_lock(); 7743 7744 if (CPU_NEXT(first_cpu)) { 7745 TaskState *ts; 7746 7747 /* Remove the CPU from the list. */ 7748 QTAILQ_REMOVE(&cpus, cpu, node); 7749 7750 cpu_list_unlock(); 7751 7752 ts = cpu->opaque; 7753 if (ts->child_tidptr) { 7754 put_user_u32(0, ts->child_tidptr); 7755 sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX, 7756 NULL, NULL, 0); 7757 } 7758 thread_cpu = NULL; 7759 object_unref(OBJECT(cpu)); 7760 g_free(ts); 7761 rcu_unregister_thread(); 7762 pthread_exit(NULL); 7763 } 7764 7765 cpu_list_unlock(); 7766 #ifdef TARGET_GPROF 7767 _mcleanup(); 7768 #endif 7769 gdb_exit(cpu_env, arg1); 7770 _exit(arg1); 7771 ret = 0; /* avoid warning */ 7772 break; 7773 case TARGET_NR_read: 7774 if (arg3 == 0) 7775 ret = 0; 7776 else { 7777 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) 7778 goto efault; 7779 ret = get_errno(safe_read(arg1, p, arg3)); 7780 if (ret >= 0 && 7781 fd_trans_host_to_target_data(arg1)) { 7782 ret = fd_trans_host_to_target_data(arg1)(p, ret); 7783 } 7784 unlock_user(p, arg2, ret); 7785 } 7786 break; 7787 case TARGET_NR_write: 7788 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) 7789 goto efault; 7790 if (fd_trans_target_to_host_data(arg1)) { 7791 void *copy = g_malloc(arg3); 7792 memcpy(copy, p, arg3); 7793 ret = fd_trans_target_to_host_data(arg1)(copy, arg3); 7794 if (ret >= 0) { 7795 ret = get_errno(safe_write(arg1, copy, ret)); 7796 } 7797 g_free(copy); 7798 } else { 7799 ret = get_errno(safe_write(arg1, p, arg3)); 7800 } 7801 unlock_user(p, arg2, 0); 7802 break; 7803 #ifdef TARGET_NR_open 7804 case TARGET_NR_open: 7805 if (!(p = lock_user_string(arg1))) 7806 goto efault; 7807 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p, 7808 target_to_host_bitmask(arg2, fcntl_flags_tbl), 7809 arg3)); 7810 fd_trans_unregister(ret); 7811 unlock_user(p, arg1, 0); 7812 break; 7813 #endif 7814 case TARGET_NR_openat: 7815 if (!(p = lock_user_string(arg2))) 7816 goto efault; 7817 ret = get_errno(do_openat(cpu_env, arg1, p, 7818 target_to_host_bitmask(arg3, fcntl_flags_tbl), 7819 arg4)); 7820 fd_trans_unregister(ret); 7821 unlock_user(p, arg2, 0); 7822 break; 7823 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7824 case TARGET_NR_name_to_handle_at: 7825 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5); 7826 break; 7827 #endif 7828 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) 7829 case TARGET_NR_open_by_handle_at: 7830 ret = do_open_by_handle_at(arg1, arg2, arg3); 7831 fd_trans_unregister(ret); 7832 break; 7833 #endif 7834 case TARGET_NR_close: 7835 fd_trans_unregister(arg1); 7836 ret = get_errno(close(arg1)); 7837 break; 7838 case TARGET_NR_brk: 7839 ret = do_brk(arg1); 7840 break; 7841 #ifdef TARGET_NR_fork 7842 case TARGET_NR_fork: 7843 ret = get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0)); 7844 break; 7845 #endif 7846 #ifdef TARGET_NR_waitpid 7847 case TARGET_NR_waitpid: 7848 { 7849 int status; 7850 ret = get_errno(safe_wait4(arg1, &status, arg3, 0)); 7851 if (!is_error(ret) && arg2 && ret 7852 && put_user_s32(host_to_target_waitstatus(status), arg2)) 7853 goto efault; 7854 } 7855 break; 7856 #endif 7857 #ifdef TARGET_NR_waitid 7858 case TARGET_NR_waitid: 7859 { 7860 siginfo_t info; 7861 info.si_pid = 0; 7862 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL)); 7863 if (!is_error(ret) && arg3 && info.si_pid != 0) { 7864 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0))) 7865 goto efault; 7866 host_to_target_siginfo(p, &info); 7867 unlock_user(p, arg3, sizeof(target_siginfo_t)); 7868 } 7869 } 7870 break; 7871 #endif 7872 #ifdef TARGET_NR_creat /* not on alpha */ 7873 case TARGET_NR_creat: 7874 if (!(p = lock_user_string(arg1))) 7875 goto efault; 7876 ret = get_errno(creat(p, arg2)); 7877 fd_trans_unregister(ret); 7878 unlock_user(p, arg1, 0); 7879 break; 7880 #endif 7881 #ifdef TARGET_NR_link 7882 case TARGET_NR_link: 7883 { 7884 void * p2; 7885 p = lock_user_string(arg1); 7886 p2 = lock_user_string(arg2); 7887 if (!p || !p2) 7888 ret = -TARGET_EFAULT; 7889 else 7890 ret = get_errno(link(p, p2)); 7891 unlock_user(p2, arg2, 0); 7892 unlock_user(p, arg1, 0); 7893 } 7894 break; 7895 #endif 7896 #if defined(TARGET_NR_linkat) 7897 case TARGET_NR_linkat: 7898 { 7899 void * p2 = NULL; 7900 if (!arg2 || !arg4) 7901 goto efault; 7902 p = lock_user_string(arg2); 7903 p2 = lock_user_string(arg4); 7904 if (!p || !p2) 7905 ret = -TARGET_EFAULT; 7906 else 7907 ret = get_errno(linkat(arg1, p, arg3, p2, arg5)); 7908 unlock_user(p, arg2, 0); 7909 unlock_user(p2, arg4, 0); 7910 } 7911 break; 7912 #endif 7913 #ifdef TARGET_NR_unlink 7914 case TARGET_NR_unlink: 7915 if (!(p = lock_user_string(arg1))) 7916 goto efault; 7917 ret = get_errno(unlink(p)); 7918 unlock_user(p, arg1, 0); 7919 break; 7920 #endif 7921 #if defined(TARGET_NR_unlinkat) 7922 case TARGET_NR_unlinkat: 7923 if (!(p = lock_user_string(arg2))) 7924 goto efault; 7925 ret = get_errno(unlinkat(arg1, p, arg3)); 7926 unlock_user(p, arg2, 0); 7927 break; 7928 #endif 7929 case TARGET_NR_execve: 7930 { 7931 char **argp, **envp; 7932 int argc, envc; 7933 abi_ulong gp; 7934 abi_ulong guest_argp; 7935 abi_ulong guest_envp; 7936 abi_ulong addr; 7937 char **q; 7938 int total_size = 0; 7939 7940 argc = 0; 7941 guest_argp = arg2; 7942 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) { 7943 if (get_user_ual(addr, gp)) 7944 goto efault; 7945 if (!addr) 7946 break; 7947 argc++; 7948 } 7949 envc = 0; 7950 guest_envp = arg3; 7951 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) { 7952 if (get_user_ual(addr, gp)) 7953 goto efault; 7954 if (!addr) 7955 break; 7956 envc++; 7957 } 7958 7959 argp = g_new0(char *, argc + 1); 7960 envp = g_new0(char *, envc + 1); 7961 7962 for (gp = guest_argp, q = argp; gp; 7963 gp += sizeof(abi_ulong), q++) { 7964 if (get_user_ual(addr, gp)) 7965 goto execve_efault; 7966 if (!addr) 7967 break; 7968 if (!(*q = lock_user_string(addr))) 7969 goto execve_efault; 7970 total_size += strlen(*q) + 1; 7971 } 7972 *q = NULL; 7973 7974 for (gp = guest_envp, q = envp; gp; 7975 gp += sizeof(abi_ulong), q++) { 7976 if (get_user_ual(addr, gp)) 7977 goto execve_efault; 7978 if (!addr) 7979 break; 7980 if (!(*q = lock_user_string(addr))) 7981 goto execve_efault; 7982 total_size += strlen(*q) + 1; 7983 } 7984 *q = NULL; 7985 7986 if (!(p = lock_user_string(arg1))) 7987 goto execve_efault; 7988 /* Although execve() is not an interruptible syscall it is 7989 * a special case where we must use the safe_syscall wrapper: 7990 * if we allow a signal to happen before we make the host 7991 * syscall then we will 'lose' it, because at the point of 7992 * execve the process leaves QEMU's control. So we use the 7993 * safe syscall wrapper to ensure that we either take the 7994 * signal as a guest signal, or else it does not happen 7995 * before the execve completes and makes it the other 7996 * program's problem. 7997 */ 7998 ret = get_errno(safe_execve(p, argp, envp)); 7999 unlock_user(p, arg1, 0); 8000 8001 goto execve_end; 8002 8003 execve_efault: 8004 ret = -TARGET_EFAULT; 8005 8006 execve_end: 8007 for (gp = guest_argp, q = argp; *q; 8008 gp += sizeof(abi_ulong), q++) { 8009 if (get_user_ual(addr, gp) 8010 || !addr) 8011 break; 8012 unlock_user(*q, addr, 0); 8013 } 8014 for (gp = guest_envp, q = envp; *q; 8015 gp += sizeof(abi_ulong), q++) { 8016 if (get_user_ual(addr, gp) 8017 || !addr) 8018 break; 8019 unlock_user(*q, addr, 0); 8020 } 8021 8022 g_free(argp); 8023 g_free(envp); 8024 } 8025 break; 8026 case TARGET_NR_chdir: 8027 if (!(p = lock_user_string(arg1))) 8028 goto efault; 8029 ret = get_errno(chdir(p)); 8030 unlock_user(p, arg1, 0); 8031 break; 8032 #ifdef TARGET_NR_time 8033 case TARGET_NR_time: 8034 { 8035 time_t host_time; 8036 ret = get_errno(time(&host_time)); 8037 if (!is_error(ret) 8038 && arg1 8039 && put_user_sal(host_time, arg1)) 8040 goto efault; 8041 } 8042 break; 8043 #endif 8044 #ifdef TARGET_NR_mknod 8045 case TARGET_NR_mknod: 8046 if (!(p = lock_user_string(arg1))) 8047 goto efault; 8048 ret = get_errno(mknod(p, arg2, arg3)); 8049 unlock_user(p, arg1, 0); 8050 break; 8051 #endif 8052 #if defined(TARGET_NR_mknodat) 8053 case TARGET_NR_mknodat: 8054 if (!(p = lock_user_string(arg2))) 8055 goto efault; 8056 ret = get_errno(mknodat(arg1, p, arg3, arg4)); 8057 unlock_user(p, arg2, 0); 8058 break; 8059 #endif 8060 #ifdef TARGET_NR_chmod 8061 case TARGET_NR_chmod: 8062 if (!(p = lock_user_string(arg1))) 8063 goto efault; 8064 ret = get_errno(chmod(p, arg2)); 8065 unlock_user(p, arg1, 0); 8066 break; 8067 #endif 8068 #ifdef TARGET_NR_break 8069 case TARGET_NR_break: 8070 goto unimplemented; 8071 #endif 8072 #ifdef TARGET_NR_oldstat 8073 case TARGET_NR_oldstat: 8074 goto unimplemented; 8075 #endif 8076 case TARGET_NR_lseek: 8077 ret = get_errno(lseek(arg1, arg2, arg3)); 8078 break; 8079 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA) 8080 /* Alpha specific */ 8081 case TARGET_NR_getxpid: 8082 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid(); 8083 ret = get_errno(getpid()); 8084 break; 8085 #endif 8086 #ifdef TARGET_NR_getpid 8087 case TARGET_NR_getpid: 8088 ret = get_errno(getpid()); 8089 break; 8090 #endif 8091 case TARGET_NR_mount: 8092 { 8093 /* need to look at the data field */ 8094 void *p2, *p3; 8095 8096 if (arg1) { 8097 p = lock_user_string(arg1); 8098 if (!p) { 8099 goto efault; 8100 } 8101 } else { 8102 p = NULL; 8103 } 8104 8105 p2 = lock_user_string(arg2); 8106 if (!p2) { 8107 if (arg1) { 8108 unlock_user(p, arg1, 0); 8109 } 8110 goto efault; 8111 } 8112 8113 if (arg3) { 8114 p3 = lock_user_string(arg3); 8115 if (!p3) { 8116 if (arg1) { 8117 unlock_user(p, arg1, 0); 8118 } 8119 unlock_user(p2, arg2, 0); 8120 goto efault; 8121 } 8122 } else { 8123 p3 = NULL; 8124 } 8125 8126 /* FIXME - arg5 should be locked, but it isn't clear how to 8127 * do that since it's not guaranteed to be a NULL-terminated 8128 * string. 8129 */ 8130 if (!arg5) { 8131 ret = mount(p, p2, p3, (unsigned long)arg4, NULL); 8132 } else { 8133 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(arg5)); 8134 } 8135 ret = get_errno(ret); 8136 8137 if (arg1) { 8138 unlock_user(p, arg1, 0); 8139 } 8140 unlock_user(p2, arg2, 0); 8141 if (arg3) { 8142 unlock_user(p3, arg3, 0); 8143 } 8144 } 8145 break; 8146 #ifdef TARGET_NR_umount 8147 case TARGET_NR_umount: 8148 if (!(p = lock_user_string(arg1))) 8149 goto efault; 8150 ret = get_errno(umount(p)); 8151 unlock_user(p, arg1, 0); 8152 break; 8153 #endif 8154 #ifdef TARGET_NR_stime /* not on alpha */ 8155 case TARGET_NR_stime: 8156 { 8157 time_t host_time; 8158 if (get_user_sal(host_time, arg1)) 8159 goto efault; 8160 ret = get_errno(stime(&host_time)); 8161 } 8162 break; 8163 #endif 8164 case TARGET_NR_ptrace: 8165 goto unimplemented; 8166 #ifdef TARGET_NR_alarm /* not on alpha */ 8167 case TARGET_NR_alarm: 8168 ret = alarm(arg1); 8169 break; 8170 #endif 8171 #ifdef TARGET_NR_oldfstat 8172 case TARGET_NR_oldfstat: 8173 goto unimplemented; 8174 #endif 8175 #ifdef TARGET_NR_pause /* not on alpha */ 8176 case TARGET_NR_pause: 8177 if (!block_signals()) { 8178 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask); 8179 } 8180 ret = -TARGET_EINTR; 8181 break; 8182 #endif 8183 #ifdef TARGET_NR_utime 8184 case TARGET_NR_utime: 8185 { 8186 struct utimbuf tbuf, *host_tbuf; 8187 struct target_utimbuf *target_tbuf; 8188 if (arg2) { 8189 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1)) 8190 goto efault; 8191 tbuf.actime = tswapal(target_tbuf->actime); 8192 tbuf.modtime = tswapal(target_tbuf->modtime); 8193 unlock_user_struct(target_tbuf, arg2, 0); 8194 host_tbuf = &tbuf; 8195 } else { 8196 host_tbuf = NULL; 8197 } 8198 if (!(p = lock_user_string(arg1))) 8199 goto efault; 8200 ret = get_errno(utime(p, host_tbuf)); 8201 unlock_user(p, arg1, 0); 8202 } 8203 break; 8204 #endif 8205 #ifdef TARGET_NR_utimes 8206 case TARGET_NR_utimes: 8207 { 8208 struct timeval *tvp, tv[2]; 8209 if (arg2) { 8210 if (copy_from_user_timeval(&tv[0], arg2) 8211 || copy_from_user_timeval(&tv[1], 8212 arg2 + sizeof(struct target_timeval))) 8213 goto efault; 8214 tvp = tv; 8215 } else { 8216 tvp = NULL; 8217 } 8218 if (!(p = lock_user_string(arg1))) 8219 goto efault; 8220 ret = get_errno(utimes(p, tvp)); 8221 unlock_user(p, arg1, 0); 8222 } 8223 break; 8224 #endif 8225 #if defined(TARGET_NR_futimesat) 8226 case TARGET_NR_futimesat: 8227 { 8228 struct timeval *tvp, tv[2]; 8229 if (arg3) { 8230 if (copy_from_user_timeval(&tv[0], arg3) 8231 || copy_from_user_timeval(&tv[1], 8232 arg3 + sizeof(struct target_timeval))) 8233 goto efault; 8234 tvp = tv; 8235 } else { 8236 tvp = NULL; 8237 } 8238 if (!(p = lock_user_string(arg2))) 8239 goto efault; 8240 ret = get_errno(futimesat(arg1, path(p), tvp)); 8241 unlock_user(p, arg2, 0); 8242 } 8243 break; 8244 #endif 8245 #ifdef TARGET_NR_stty 8246 case TARGET_NR_stty: 8247 goto unimplemented; 8248 #endif 8249 #ifdef TARGET_NR_gtty 8250 case TARGET_NR_gtty: 8251 goto unimplemented; 8252 #endif 8253 #ifdef TARGET_NR_access 8254 case TARGET_NR_access: 8255 if (!(p = lock_user_string(arg1))) 8256 goto efault; 8257 ret = get_errno(access(path(p), arg2)); 8258 unlock_user(p, arg1, 0); 8259 break; 8260 #endif 8261 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat) 8262 case TARGET_NR_faccessat: 8263 if (!(p = lock_user_string(arg2))) 8264 goto efault; 8265 ret = get_errno(faccessat(arg1, p, arg3, 0)); 8266 unlock_user(p, arg2, 0); 8267 break; 8268 #endif 8269 #ifdef TARGET_NR_nice /* not on alpha */ 8270 case TARGET_NR_nice: 8271 ret = get_errno(nice(arg1)); 8272 break; 8273 #endif 8274 #ifdef TARGET_NR_ftime 8275 case TARGET_NR_ftime: 8276 goto unimplemented; 8277 #endif 8278 case TARGET_NR_sync: 8279 sync(); 8280 ret = 0; 8281 break; 8282 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS) 8283 case TARGET_NR_syncfs: 8284 ret = get_errno(syncfs(arg1)); 8285 break; 8286 #endif 8287 case TARGET_NR_kill: 8288 ret = get_errno(safe_kill(arg1, target_to_host_signal(arg2))); 8289 break; 8290 #ifdef TARGET_NR_rename 8291 case TARGET_NR_rename: 8292 { 8293 void *p2; 8294 p = lock_user_string(arg1); 8295 p2 = lock_user_string(arg2); 8296 if (!p || !p2) 8297 ret = -TARGET_EFAULT; 8298 else 8299 ret = get_errno(rename(p, p2)); 8300 unlock_user(p2, arg2, 0); 8301 unlock_user(p, arg1, 0); 8302 } 8303 break; 8304 #endif 8305 #if defined(TARGET_NR_renameat) 8306 case TARGET_NR_renameat: 8307 { 8308 void *p2; 8309 p = lock_user_string(arg2); 8310 p2 = lock_user_string(arg4); 8311 if (!p || !p2) 8312 ret = -TARGET_EFAULT; 8313 else 8314 ret = get_errno(renameat(arg1, p, arg3, p2)); 8315 unlock_user(p2, arg4, 0); 8316 unlock_user(p, arg2, 0); 8317 } 8318 break; 8319 #endif 8320 #ifdef TARGET_NR_mkdir 8321 case TARGET_NR_mkdir: 8322 if (!(p = lock_user_string(arg1))) 8323 goto efault; 8324 ret = get_errno(mkdir(p, arg2)); 8325 unlock_user(p, arg1, 0); 8326 break; 8327 #endif 8328 #if defined(TARGET_NR_mkdirat) 8329 case TARGET_NR_mkdirat: 8330 if (!(p = lock_user_string(arg2))) 8331 goto efault; 8332 ret = get_errno(mkdirat(arg1, p, arg3)); 8333 unlock_user(p, arg2, 0); 8334 break; 8335 #endif 8336 #ifdef TARGET_NR_rmdir 8337 case TARGET_NR_rmdir: 8338 if (!(p = lock_user_string(arg1))) 8339 goto efault; 8340 ret = get_errno(rmdir(p)); 8341 unlock_user(p, arg1, 0); 8342 break; 8343 #endif 8344 case TARGET_NR_dup: 8345 ret = get_errno(dup(arg1)); 8346 if (ret >= 0) { 8347 fd_trans_dup(arg1, ret); 8348 } 8349 break; 8350 #ifdef TARGET_NR_pipe 8351 case TARGET_NR_pipe: 8352 ret = do_pipe(cpu_env, arg1, 0, 0); 8353 break; 8354 #endif 8355 #ifdef TARGET_NR_pipe2 8356 case TARGET_NR_pipe2: 8357 ret = do_pipe(cpu_env, arg1, 8358 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1); 8359 break; 8360 #endif 8361 case TARGET_NR_times: 8362 { 8363 struct target_tms *tmsp; 8364 struct tms tms; 8365 ret = get_errno(times(&tms)); 8366 if (arg1) { 8367 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0); 8368 if (!tmsp) 8369 goto efault; 8370 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime)); 8371 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime)); 8372 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime)); 8373 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime)); 8374 } 8375 if (!is_error(ret)) 8376 ret = host_to_target_clock_t(ret); 8377 } 8378 break; 8379 #ifdef TARGET_NR_prof 8380 case TARGET_NR_prof: 8381 goto unimplemented; 8382 #endif 8383 #ifdef TARGET_NR_signal 8384 case TARGET_NR_signal: 8385 goto unimplemented; 8386 #endif 8387 case TARGET_NR_acct: 8388 if (arg1 == 0) { 8389 ret = get_errno(acct(NULL)); 8390 } else { 8391 if (!(p = lock_user_string(arg1))) 8392 goto efault; 8393 ret = get_errno(acct(path(p))); 8394 unlock_user(p, arg1, 0); 8395 } 8396 break; 8397 #ifdef TARGET_NR_umount2 8398 case TARGET_NR_umount2: 8399 if (!(p = lock_user_string(arg1))) 8400 goto efault; 8401 ret = get_errno(umount2(p, arg2)); 8402 unlock_user(p, arg1, 0); 8403 break; 8404 #endif 8405 #ifdef TARGET_NR_lock 8406 case TARGET_NR_lock: 8407 goto unimplemented; 8408 #endif 8409 case TARGET_NR_ioctl: 8410 ret = do_ioctl(arg1, arg2, arg3); 8411 break; 8412 case TARGET_NR_fcntl: 8413 ret = do_fcntl(arg1, arg2, arg3); 8414 break; 8415 #ifdef TARGET_NR_mpx 8416 case TARGET_NR_mpx: 8417 goto unimplemented; 8418 #endif 8419 case TARGET_NR_setpgid: 8420 ret = get_errno(setpgid(arg1, arg2)); 8421 break; 8422 #ifdef TARGET_NR_ulimit 8423 case TARGET_NR_ulimit: 8424 goto unimplemented; 8425 #endif 8426 #ifdef TARGET_NR_oldolduname 8427 case TARGET_NR_oldolduname: 8428 goto unimplemented; 8429 #endif 8430 case TARGET_NR_umask: 8431 ret = get_errno(umask(arg1)); 8432 break; 8433 case TARGET_NR_chroot: 8434 if (!(p = lock_user_string(arg1))) 8435 goto efault; 8436 ret = get_errno(chroot(p)); 8437 unlock_user(p, arg1, 0); 8438 break; 8439 #ifdef TARGET_NR_ustat 8440 case TARGET_NR_ustat: 8441 goto unimplemented; 8442 #endif 8443 #ifdef TARGET_NR_dup2 8444 case TARGET_NR_dup2: 8445 ret = get_errno(dup2(arg1, arg2)); 8446 if (ret >= 0) { 8447 fd_trans_dup(arg1, arg2); 8448 } 8449 break; 8450 #endif 8451 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3) 8452 case TARGET_NR_dup3: 8453 ret = get_errno(dup3(arg1, arg2, arg3)); 8454 if (ret >= 0) { 8455 fd_trans_dup(arg1, arg2); 8456 } 8457 break; 8458 #endif 8459 #ifdef TARGET_NR_getppid /* not on alpha */ 8460 case TARGET_NR_getppid: 8461 ret = get_errno(getppid()); 8462 break; 8463 #endif 8464 #ifdef TARGET_NR_getpgrp 8465 case TARGET_NR_getpgrp: 8466 ret = get_errno(getpgrp()); 8467 break; 8468 #endif 8469 case TARGET_NR_setsid: 8470 ret = get_errno(setsid()); 8471 break; 8472 #ifdef TARGET_NR_sigaction 8473 case TARGET_NR_sigaction: 8474 { 8475 #if defined(TARGET_ALPHA) 8476 struct target_sigaction act, oact, *pact = 0; 8477 struct target_old_sigaction *old_act; 8478 if (arg2) { 8479 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 8480 goto efault; 8481 act._sa_handler = old_act->_sa_handler; 8482 target_siginitset(&act.sa_mask, old_act->sa_mask); 8483 act.sa_flags = old_act->sa_flags; 8484 act.sa_restorer = 0; 8485 unlock_user_struct(old_act, arg2, 0); 8486 pact = &act; 8487 } 8488 ret = get_errno(do_sigaction(arg1, pact, &oact)); 8489 if (!is_error(ret) && arg3) { 8490 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 8491 goto efault; 8492 old_act->_sa_handler = oact._sa_handler; 8493 old_act->sa_mask = oact.sa_mask.sig[0]; 8494 old_act->sa_flags = oact.sa_flags; 8495 unlock_user_struct(old_act, arg3, 1); 8496 } 8497 #elif defined(TARGET_MIPS) 8498 struct target_sigaction act, oact, *pact, *old_act; 8499 8500 if (arg2) { 8501 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 8502 goto efault; 8503 act._sa_handler = old_act->_sa_handler; 8504 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]); 8505 act.sa_flags = old_act->sa_flags; 8506 unlock_user_struct(old_act, arg2, 0); 8507 pact = &act; 8508 } else { 8509 pact = NULL; 8510 } 8511 8512 ret = get_errno(do_sigaction(arg1, pact, &oact)); 8513 8514 if (!is_error(ret) && arg3) { 8515 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 8516 goto efault; 8517 old_act->_sa_handler = oact._sa_handler; 8518 old_act->sa_flags = oact.sa_flags; 8519 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0]; 8520 old_act->sa_mask.sig[1] = 0; 8521 old_act->sa_mask.sig[2] = 0; 8522 old_act->sa_mask.sig[3] = 0; 8523 unlock_user_struct(old_act, arg3, 1); 8524 } 8525 #else 8526 struct target_old_sigaction *old_act; 8527 struct target_sigaction act, oact, *pact; 8528 if (arg2) { 8529 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) 8530 goto efault; 8531 act._sa_handler = old_act->_sa_handler; 8532 target_siginitset(&act.sa_mask, old_act->sa_mask); 8533 act.sa_flags = old_act->sa_flags; 8534 act.sa_restorer = old_act->sa_restorer; 8535 unlock_user_struct(old_act, arg2, 0); 8536 pact = &act; 8537 } else { 8538 pact = NULL; 8539 } 8540 ret = get_errno(do_sigaction(arg1, pact, &oact)); 8541 if (!is_error(ret) && arg3) { 8542 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) 8543 goto efault; 8544 old_act->_sa_handler = oact._sa_handler; 8545 old_act->sa_mask = oact.sa_mask.sig[0]; 8546 old_act->sa_flags = oact.sa_flags; 8547 old_act->sa_restorer = oact.sa_restorer; 8548 unlock_user_struct(old_act, arg3, 1); 8549 } 8550 #endif 8551 } 8552 break; 8553 #endif 8554 case TARGET_NR_rt_sigaction: 8555 { 8556 #if defined(TARGET_ALPHA) 8557 struct target_sigaction act, oact, *pact = 0; 8558 struct target_rt_sigaction *rt_act; 8559 8560 if (arg4 != sizeof(target_sigset_t)) { 8561 ret = -TARGET_EINVAL; 8562 break; 8563 } 8564 if (arg2) { 8565 if (!lock_user_struct(VERIFY_READ, rt_act, arg2, 1)) 8566 goto efault; 8567 act._sa_handler = rt_act->_sa_handler; 8568 act.sa_mask = rt_act->sa_mask; 8569 act.sa_flags = rt_act->sa_flags; 8570 act.sa_restorer = arg5; 8571 unlock_user_struct(rt_act, arg2, 0); 8572 pact = &act; 8573 } 8574 ret = get_errno(do_sigaction(arg1, pact, &oact)); 8575 if (!is_error(ret) && arg3) { 8576 if (!lock_user_struct(VERIFY_WRITE, rt_act, arg3, 0)) 8577 goto efault; 8578 rt_act->_sa_handler = oact._sa_handler; 8579 rt_act->sa_mask = oact.sa_mask; 8580 rt_act->sa_flags = oact.sa_flags; 8581 unlock_user_struct(rt_act, arg3, 1); 8582 } 8583 #else 8584 struct target_sigaction *act; 8585 struct target_sigaction *oact; 8586 8587 if (arg4 != sizeof(target_sigset_t)) { 8588 ret = -TARGET_EINVAL; 8589 break; 8590 } 8591 if (arg2) { 8592 if (!lock_user_struct(VERIFY_READ, act, arg2, 1)) 8593 goto efault; 8594 } else 8595 act = NULL; 8596 if (arg3) { 8597 if (!lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) { 8598 ret = -TARGET_EFAULT; 8599 goto rt_sigaction_fail; 8600 } 8601 } else 8602 oact = NULL; 8603 ret = get_errno(do_sigaction(arg1, act, oact)); 8604 rt_sigaction_fail: 8605 if (act) 8606 unlock_user_struct(act, arg2, 0); 8607 if (oact) 8608 unlock_user_struct(oact, arg3, 1); 8609 #endif 8610 } 8611 break; 8612 #ifdef TARGET_NR_sgetmask /* not on alpha */ 8613 case TARGET_NR_sgetmask: 8614 { 8615 sigset_t cur_set; 8616 abi_ulong target_set; 8617 ret = do_sigprocmask(0, NULL, &cur_set); 8618 if (!ret) { 8619 host_to_target_old_sigset(&target_set, &cur_set); 8620 ret = target_set; 8621 } 8622 } 8623 break; 8624 #endif 8625 #ifdef TARGET_NR_ssetmask /* not on alpha */ 8626 case TARGET_NR_ssetmask: 8627 { 8628 sigset_t set, oset; 8629 abi_ulong target_set = arg1; 8630 target_to_host_old_sigset(&set, &target_set); 8631 ret = do_sigprocmask(SIG_SETMASK, &set, &oset); 8632 if (!ret) { 8633 host_to_target_old_sigset(&target_set, &oset); 8634 ret = target_set; 8635 } 8636 } 8637 break; 8638 #endif 8639 #ifdef TARGET_NR_sigprocmask 8640 case TARGET_NR_sigprocmask: 8641 { 8642 #if defined(TARGET_ALPHA) 8643 sigset_t set, oldset; 8644 abi_ulong mask; 8645 int how; 8646 8647 switch (arg1) { 8648 case TARGET_SIG_BLOCK: 8649 how = SIG_BLOCK; 8650 break; 8651 case TARGET_SIG_UNBLOCK: 8652 how = SIG_UNBLOCK; 8653 break; 8654 case TARGET_SIG_SETMASK: 8655 how = SIG_SETMASK; 8656 break; 8657 default: 8658 ret = -TARGET_EINVAL; 8659 goto fail; 8660 } 8661 mask = arg2; 8662 target_to_host_old_sigset(&set, &mask); 8663 8664 ret = do_sigprocmask(how, &set, &oldset); 8665 if (!is_error(ret)) { 8666 host_to_target_old_sigset(&mask, &oldset); 8667 ret = mask; 8668 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */ 8669 } 8670 #else 8671 sigset_t set, oldset, *set_ptr; 8672 int how; 8673 8674 if (arg2) { 8675 switch (arg1) { 8676 case TARGET_SIG_BLOCK: 8677 how = SIG_BLOCK; 8678 break; 8679 case TARGET_SIG_UNBLOCK: 8680 how = SIG_UNBLOCK; 8681 break; 8682 case TARGET_SIG_SETMASK: 8683 how = SIG_SETMASK; 8684 break; 8685 default: 8686 ret = -TARGET_EINVAL; 8687 goto fail; 8688 } 8689 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) 8690 goto efault; 8691 target_to_host_old_sigset(&set, p); 8692 unlock_user(p, arg2, 0); 8693 set_ptr = &set; 8694 } else { 8695 how = 0; 8696 set_ptr = NULL; 8697 } 8698 ret = do_sigprocmask(how, set_ptr, &oldset); 8699 if (!is_error(ret) && arg3) { 8700 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 8701 goto efault; 8702 host_to_target_old_sigset(p, &oldset); 8703 unlock_user(p, arg3, sizeof(target_sigset_t)); 8704 } 8705 #endif 8706 } 8707 break; 8708 #endif 8709 case TARGET_NR_rt_sigprocmask: 8710 { 8711 int how = arg1; 8712 sigset_t set, oldset, *set_ptr; 8713 8714 if (arg4 != sizeof(target_sigset_t)) { 8715 ret = -TARGET_EINVAL; 8716 break; 8717 } 8718 8719 if (arg2) { 8720 switch(how) { 8721 case TARGET_SIG_BLOCK: 8722 how = SIG_BLOCK; 8723 break; 8724 case TARGET_SIG_UNBLOCK: 8725 how = SIG_UNBLOCK; 8726 break; 8727 case TARGET_SIG_SETMASK: 8728 how = SIG_SETMASK; 8729 break; 8730 default: 8731 ret = -TARGET_EINVAL; 8732 goto fail; 8733 } 8734 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) 8735 goto efault; 8736 target_to_host_sigset(&set, p); 8737 unlock_user(p, arg2, 0); 8738 set_ptr = &set; 8739 } else { 8740 how = 0; 8741 set_ptr = NULL; 8742 } 8743 ret = do_sigprocmask(how, set_ptr, &oldset); 8744 if (!is_error(ret) && arg3) { 8745 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) 8746 goto efault; 8747 host_to_target_sigset(p, &oldset); 8748 unlock_user(p, arg3, sizeof(target_sigset_t)); 8749 } 8750 } 8751 break; 8752 #ifdef TARGET_NR_sigpending 8753 case TARGET_NR_sigpending: 8754 { 8755 sigset_t set; 8756 ret = get_errno(sigpending(&set)); 8757 if (!is_error(ret)) { 8758 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 8759 goto efault; 8760 host_to_target_old_sigset(p, &set); 8761 unlock_user(p, arg1, sizeof(target_sigset_t)); 8762 } 8763 } 8764 break; 8765 #endif 8766 case TARGET_NR_rt_sigpending: 8767 { 8768 sigset_t set; 8769 8770 /* Yes, this check is >, not != like most. We follow the kernel's 8771 * logic and it does it like this because it implements 8772 * NR_sigpending through the same code path, and in that case 8773 * the old_sigset_t is smaller in size. 8774 */ 8775 if (arg2 > sizeof(target_sigset_t)) { 8776 ret = -TARGET_EINVAL; 8777 break; 8778 } 8779 8780 ret = get_errno(sigpending(&set)); 8781 if (!is_error(ret)) { 8782 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) 8783 goto efault; 8784 host_to_target_sigset(p, &set); 8785 unlock_user(p, arg1, sizeof(target_sigset_t)); 8786 } 8787 } 8788 break; 8789 #ifdef TARGET_NR_sigsuspend 8790 case TARGET_NR_sigsuspend: 8791 { 8792 TaskState *ts = cpu->opaque; 8793 #if defined(TARGET_ALPHA) 8794 abi_ulong mask = arg1; 8795 target_to_host_old_sigset(&ts->sigsuspend_mask, &mask); 8796 #else 8797 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 8798 goto efault; 8799 target_to_host_old_sigset(&ts->sigsuspend_mask, p); 8800 unlock_user(p, arg1, 0); 8801 #endif 8802 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, 8803 SIGSET_T_SIZE)); 8804 if (ret != -TARGET_ERESTARTSYS) { 8805 ts->in_sigsuspend = 1; 8806 } 8807 } 8808 break; 8809 #endif 8810 case TARGET_NR_rt_sigsuspend: 8811 { 8812 TaskState *ts = cpu->opaque; 8813 8814 if (arg2 != sizeof(target_sigset_t)) { 8815 ret = -TARGET_EINVAL; 8816 break; 8817 } 8818 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 8819 goto efault; 8820 target_to_host_sigset(&ts->sigsuspend_mask, p); 8821 unlock_user(p, arg1, 0); 8822 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, 8823 SIGSET_T_SIZE)); 8824 if (ret != -TARGET_ERESTARTSYS) { 8825 ts->in_sigsuspend = 1; 8826 } 8827 } 8828 break; 8829 case TARGET_NR_rt_sigtimedwait: 8830 { 8831 sigset_t set; 8832 struct timespec uts, *puts; 8833 siginfo_t uinfo; 8834 8835 if (arg4 != sizeof(target_sigset_t)) { 8836 ret = -TARGET_EINVAL; 8837 break; 8838 } 8839 8840 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) 8841 goto efault; 8842 target_to_host_sigset(&set, p); 8843 unlock_user(p, arg1, 0); 8844 if (arg3) { 8845 puts = &uts; 8846 target_to_host_timespec(puts, arg3); 8847 } else { 8848 puts = NULL; 8849 } 8850 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, 8851 SIGSET_T_SIZE)); 8852 if (!is_error(ret)) { 8853 if (arg2) { 8854 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t), 8855 0); 8856 if (!p) { 8857 goto efault; 8858 } 8859 host_to_target_siginfo(p, &uinfo); 8860 unlock_user(p, arg2, sizeof(target_siginfo_t)); 8861 } 8862 ret = host_to_target_signal(ret); 8863 } 8864 } 8865 break; 8866 case TARGET_NR_rt_sigqueueinfo: 8867 { 8868 siginfo_t uinfo; 8869 8870 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); 8871 if (!p) { 8872 goto efault; 8873 } 8874 target_to_host_siginfo(&uinfo, p); 8875 unlock_user(p, arg3, 0); 8876 ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo)); 8877 } 8878 break; 8879 case TARGET_NR_rt_tgsigqueueinfo: 8880 { 8881 siginfo_t uinfo; 8882 8883 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1); 8884 if (!p) { 8885 goto efault; 8886 } 8887 target_to_host_siginfo(&uinfo, p); 8888 unlock_user(p, arg4, 0); 8889 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo)); 8890 } 8891 break; 8892 #ifdef TARGET_NR_sigreturn 8893 case TARGET_NR_sigreturn: 8894 if (block_signals()) { 8895 ret = -TARGET_ERESTARTSYS; 8896 } else { 8897 ret = do_sigreturn(cpu_env); 8898 } 8899 break; 8900 #endif 8901 case TARGET_NR_rt_sigreturn: 8902 if (block_signals()) { 8903 ret = -TARGET_ERESTARTSYS; 8904 } else { 8905 ret = do_rt_sigreturn(cpu_env); 8906 } 8907 break; 8908 case TARGET_NR_sethostname: 8909 if (!(p = lock_user_string(arg1))) 8910 goto efault; 8911 ret = get_errno(sethostname(p, arg2)); 8912 unlock_user(p, arg1, 0); 8913 break; 8914 case TARGET_NR_setrlimit: 8915 { 8916 int resource = target_to_host_resource(arg1); 8917 struct target_rlimit *target_rlim; 8918 struct rlimit rlim; 8919 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) 8920 goto efault; 8921 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur); 8922 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max); 8923 unlock_user_struct(target_rlim, arg2, 0); 8924 ret = get_errno(setrlimit(resource, &rlim)); 8925 } 8926 break; 8927 case TARGET_NR_getrlimit: 8928 { 8929 int resource = target_to_host_resource(arg1); 8930 struct target_rlimit *target_rlim; 8931 struct rlimit rlim; 8932 8933 ret = get_errno(getrlimit(resource, &rlim)); 8934 if (!is_error(ret)) { 8935 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 8936 goto efault; 8937 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 8938 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 8939 unlock_user_struct(target_rlim, arg2, 1); 8940 } 8941 } 8942 break; 8943 case TARGET_NR_getrusage: 8944 { 8945 struct rusage rusage; 8946 ret = get_errno(getrusage(arg1, &rusage)); 8947 if (!is_error(ret)) { 8948 ret = host_to_target_rusage(arg2, &rusage); 8949 } 8950 } 8951 break; 8952 case TARGET_NR_gettimeofday: 8953 { 8954 struct timeval tv; 8955 ret = get_errno(gettimeofday(&tv, NULL)); 8956 if (!is_error(ret)) { 8957 if (copy_to_user_timeval(arg1, &tv)) 8958 goto efault; 8959 } 8960 } 8961 break; 8962 case TARGET_NR_settimeofday: 8963 { 8964 struct timeval tv, *ptv = NULL; 8965 struct timezone tz, *ptz = NULL; 8966 8967 if (arg1) { 8968 if (copy_from_user_timeval(&tv, arg1)) { 8969 goto efault; 8970 } 8971 ptv = &tv; 8972 } 8973 8974 if (arg2) { 8975 if (copy_from_user_timezone(&tz, arg2)) { 8976 goto efault; 8977 } 8978 ptz = &tz; 8979 } 8980 8981 ret = get_errno(settimeofday(ptv, ptz)); 8982 } 8983 break; 8984 #if defined(TARGET_NR_select) 8985 case TARGET_NR_select: 8986 #if defined(TARGET_WANT_NI_OLD_SELECT) 8987 /* some architectures used to have old_select here 8988 * but now ENOSYS it. 8989 */ 8990 ret = -TARGET_ENOSYS; 8991 #elif defined(TARGET_WANT_OLD_SYS_SELECT) 8992 ret = do_old_select(arg1); 8993 #else 8994 ret = do_select(arg1, arg2, arg3, arg4, arg5); 8995 #endif 8996 break; 8997 #endif 8998 #ifdef TARGET_NR_pselect6 8999 case TARGET_NR_pselect6: 9000 { 9001 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr; 9002 fd_set rfds, wfds, efds; 9003 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; 9004 struct timespec ts, *ts_ptr; 9005 9006 /* 9007 * The 6th arg is actually two args smashed together, 9008 * so we cannot use the C library. 9009 */ 9010 sigset_t set; 9011 struct { 9012 sigset_t *set; 9013 size_t size; 9014 } sig, *sig_ptr; 9015 9016 abi_ulong arg_sigset, arg_sigsize, *arg7; 9017 target_sigset_t *target_sigset; 9018 9019 n = arg1; 9020 rfd_addr = arg2; 9021 wfd_addr = arg3; 9022 efd_addr = arg4; 9023 ts_addr = arg5; 9024 9025 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); 9026 if (ret) { 9027 goto fail; 9028 } 9029 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); 9030 if (ret) { 9031 goto fail; 9032 } 9033 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); 9034 if (ret) { 9035 goto fail; 9036 } 9037 9038 /* 9039 * This takes a timespec, and not a timeval, so we cannot 9040 * use the do_select() helper ... 9041 */ 9042 if (ts_addr) { 9043 if (target_to_host_timespec(&ts, ts_addr)) { 9044 goto efault; 9045 } 9046 ts_ptr = &ts; 9047 } else { 9048 ts_ptr = NULL; 9049 } 9050 9051 /* Extract the two packed args for the sigset */ 9052 if (arg6) { 9053 sig_ptr = &sig; 9054 sig.size = SIGSET_T_SIZE; 9055 9056 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1); 9057 if (!arg7) { 9058 goto efault; 9059 } 9060 arg_sigset = tswapal(arg7[0]); 9061 arg_sigsize = tswapal(arg7[1]); 9062 unlock_user(arg7, arg6, 0); 9063 9064 if (arg_sigset) { 9065 sig.set = &set; 9066 if (arg_sigsize != sizeof(*target_sigset)) { 9067 /* Like the kernel, we enforce correct size sigsets */ 9068 ret = -TARGET_EINVAL; 9069 goto fail; 9070 } 9071 target_sigset = lock_user(VERIFY_READ, arg_sigset, 9072 sizeof(*target_sigset), 1); 9073 if (!target_sigset) { 9074 goto efault; 9075 } 9076 target_to_host_sigset(&set, target_sigset); 9077 unlock_user(target_sigset, arg_sigset, 0); 9078 } else { 9079 sig.set = NULL; 9080 } 9081 } else { 9082 sig_ptr = NULL; 9083 } 9084 9085 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, 9086 ts_ptr, sig_ptr)); 9087 9088 if (!is_error(ret)) { 9089 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) 9090 goto efault; 9091 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) 9092 goto efault; 9093 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) 9094 goto efault; 9095 9096 if (ts_addr && host_to_target_timespec(ts_addr, &ts)) 9097 goto efault; 9098 } 9099 } 9100 break; 9101 #endif 9102 #ifdef TARGET_NR_symlink 9103 case TARGET_NR_symlink: 9104 { 9105 void *p2; 9106 p = lock_user_string(arg1); 9107 p2 = lock_user_string(arg2); 9108 if (!p || !p2) 9109 ret = -TARGET_EFAULT; 9110 else 9111 ret = get_errno(symlink(p, p2)); 9112 unlock_user(p2, arg2, 0); 9113 unlock_user(p, arg1, 0); 9114 } 9115 break; 9116 #endif 9117 #if defined(TARGET_NR_symlinkat) 9118 case TARGET_NR_symlinkat: 9119 { 9120 void *p2; 9121 p = lock_user_string(arg1); 9122 p2 = lock_user_string(arg3); 9123 if (!p || !p2) 9124 ret = -TARGET_EFAULT; 9125 else 9126 ret = get_errno(symlinkat(p, arg2, p2)); 9127 unlock_user(p2, arg3, 0); 9128 unlock_user(p, arg1, 0); 9129 } 9130 break; 9131 #endif 9132 #ifdef TARGET_NR_oldlstat 9133 case TARGET_NR_oldlstat: 9134 goto unimplemented; 9135 #endif 9136 #ifdef TARGET_NR_readlink 9137 case TARGET_NR_readlink: 9138 { 9139 void *p2; 9140 p = lock_user_string(arg1); 9141 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9142 if (!p || !p2) { 9143 ret = -TARGET_EFAULT; 9144 } else if (!arg3) { 9145 /* Short circuit this for the magic exe check. */ 9146 ret = -TARGET_EINVAL; 9147 } else if (is_proc_myself((const char *)p, "exe")) { 9148 char real[PATH_MAX], *temp; 9149 temp = realpath(exec_path, real); 9150 /* Return value is # of bytes that we wrote to the buffer. */ 9151 if (temp == NULL) { 9152 ret = get_errno(-1); 9153 } else { 9154 /* Don't worry about sign mismatch as earlier mapping 9155 * logic would have thrown a bad address error. */ 9156 ret = MIN(strlen(real), arg3); 9157 /* We cannot NUL terminate the string. */ 9158 memcpy(p2, real, ret); 9159 } 9160 } else { 9161 ret = get_errno(readlink(path(p), p2, arg3)); 9162 } 9163 unlock_user(p2, arg2, ret); 9164 unlock_user(p, arg1, 0); 9165 } 9166 break; 9167 #endif 9168 #if defined(TARGET_NR_readlinkat) 9169 case TARGET_NR_readlinkat: 9170 { 9171 void *p2; 9172 p = lock_user_string(arg2); 9173 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); 9174 if (!p || !p2) { 9175 ret = -TARGET_EFAULT; 9176 } else if (is_proc_myself((const char *)p, "exe")) { 9177 char real[PATH_MAX], *temp; 9178 temp = realpath(exec_path, real); 9179 ret = temp == NULL ? get_errno(-1) : strlen(real) ; 9180 snprintf((char *)p2, arg4, "%s", real); 9181 } else { 9182 ret = get_errno(readlinkat(arg1, path(p), p2, arg4)); 9183 } 9184 unlock_user(p2, arg3, ret); 9185 unlock_user(p, arg2, 0); 9186 } 9187 break; 9188 #endif 9189 #ifdef TARGET_NR_uselib 9190 case TARGET_NR_uselib: 9191 goto unimplemented; 9192 #endif 9193 #ifdef TARGET_NR_swapon 9194 case TARGET_NR_swapon: 9195 if (!(p = lock_user_string(arg1))) 9196 goto efault; 9197 ret = get_errno(swapon(p, arg2)); 9198 unlock_user(p, arg1, 0); 9199 break; 9200 #endif 9201 case TARGET_NR_reboot: 9202 if (arg3 == LINUX_REBOOT_CMD_RESTART2) { 9203 /* arg4 must be ignored in all other cases */ 9204 p = lock_user_string(arg4); 9205 if (!p) { 9206 goto efault; 9207 } 9208 ret = get_errno(reboot(arg1, arg2, arg3, p)); 9209 unlock_user(p, arg4, 0); 9210 } else { 9211 ret = get_errno(reboot(arg1, arg2, arg3, NULL)); 9212 } 9213 break; 9214 #ifdef TARGET_NR_readdir 9215 case TARGET_NR_readdir: 9216 goto unimplemented; 9217 #endif 9218 #ifdef TARGET_NR_mmap 9219 case TARGET_NR_mmap: 9220 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \ 9221 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \ 9222 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \ 9223 || defined(TARGET_S390X) 9224 { 9225 abi_ulong *v; 9226 abi_ulong v1, v2, v3, v4, v5, v6; 9227 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1))) 9228 goto efault; 9229 v1 = tswapal(v[0]); 9230 v2 = tswapal(v[1]); 9231 v3 = tswapal(v[2]); 9232 v4 = tswapal(v[3]); 9233 v5 = tswapal(v[4]); 9234 v6 = tswapal(v[5]); 9235 unlock_user(v, arg1, 0); 9236 ret = get_errno(target_mmap(v1, v2, v3, 9237 target_to_host_bitmask(v4, mmap_flags_tbl), 9238 v5, v6)); 9239 } 9240 #else 9241 ret = get_errno(target_mmap(arg1, arg2, arg3, 9242 target_to_host_bitmask(arg4, mmap_flags_tbl), 9243 arg5, 9244 arg6)); 9245 #endif 9246 break; 9247 #endif 9248 #ifdef TARGET_NR_mmap2 9249 case TARGET_NR_mmap2: 9250 #ifndef MMAP_SHIFT 9251 #define MMAP_SHIFT 12 9252 #endif 9253 ret = get_errno(target_mmap(arg1, arg2, arg3, 9254 target_to_host_bitmask(arg4, mmap_flags_tbl), 9255 arg5, 9256 arg6 << MMAP_SHIFT)); 9257 break; 9258 #endif 9259 case TARGET_NR_munmap: 9260 ret = get_errno(target_munmap(arg1, arg2)); 9261 break; 9262 case TARGET_NR_mprotect: 9263 { 9264 TaskState *ts = cpu->opaque; 9265 /* Special hack to detect libc making the stack executable. */ 9266 if ((arg3 & PROT_GROWSDOWN) 9267 && arg1 >= ts->info->stack_limit 9268 && arg1 <= ts->info->start_stack) { 9269 arg3 &= ~PROT_GROWSDOWN; 9270 arg2 = arg2 + arg1 - ts->info->stack_limit; 9271 arg1 = ts->info->stack_limit; 9272 } 9273 } 9274 ret = get_errno(target_mprotect(arg1, arg2, arg3)); 9275 break; 9276 #ifdef TARGET_NR_mremap 9277 case TARGET_NR_mremap: 9278 ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5)); 9279 break; 9280 #endif 9281 /* ??? msync/mlock/munlock are broken for softmmu. */ 9282 #ifdef TARGET_NR_msync 9283 case TARGET_NR_msync: 9284 ret = get_errno(msync(g2h(arg1), arg2, arg3)); 9285 break; 9286 #endif 9287 #ifdef TARGET_NR_mlock 9288 case TARGET_NR_mlock: 9289 ret = get_errno(mlock(g2h(arg1), arg2)); 9290 break; 9291 #endif 9292 #ifdef TARGET_NR_munlock 9293 case TARGET_NR_munlock: 9294 ret = get_errno(munlock(g2h(arg1), arg2)); 9295 break; 9296 #endif 9297 #ifdef TARGET_NR_mlockall 9298 case TARGET_NR_mlockall: 9299 ret = get_errno(mlockall(target_to_host_mlockall_arg(arg1))); 9300 break; 9301 #endif 9302 #ifdef TARGET_NR_munlockall 9303 case TARGET_NR_munlockall: 9304 ret = get_errno(munlockall()); 9305 break; 9306 #endif 9307 case TARGET_NR_truncate: 9308 if (!(p = lock_user_string(arg1))) 9309 goto efault; 9310 ret = get_errno(truncate(p, arg2)); 9311 unlock_user(p, arg1, 0); 9312 break; 9313 case TARGET_NR_ftruncate: 9314 ret = get_errno(ftruncate(arg1, arg2)); 9315 break; 9316 case TARGET_NR_fchmod: 9317 ret = get_errno(fchmod(arg1, arg2)); 9318 break; 9319 #if defined(TARGET_NR_fchmodat) 9320 case TARGET_NR_fchmodat: 9321 if (!(p = lock_user_string(arg2))) 9322 goto efault; 9323 ret = get_errno(fchmodat(arg1, p, arg3, 0)); 9324 unlock_user(p, arg2, 0); 9325 break; 9326 #endif 9327 case TARGET_NR_getpriority: 9328 /* Note that negative values are valid for getpriority, so we must 9329 differentiate based on errno settings. */ 9330 errno = 0; 9331 ret = getpriority(arg1, arg2); 9332 if (ret == -1 && errno != 0) { 9333 ret = -host_to_target_errno(errno); 9334 break; 9335 } 9336 #ifdef TARGET_ALPHA 9337 /* Return value is the unbiased priority. Signal no error. */ 9338 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; 9339 #else 9340 /* Return value is a biased priority to avoid negative numbers. */ 9341 ret = 20 - ret; 9342 #endif 9343 break; 9344 case TARGET_NR_setpriority: 9345 ret = get_errno(setpriority(arg1, arg2, arg3)); 9346 break; 9347 #ifdef TARGET_NR_profil 9348 case TARGET_NR_profil: 9349 goto unimplemented; 9350 #endif 9351 case TARGET_NR_statfs: 9352 if (!(p = lock_user_string(arg1))) 9353 goto efault; 9354 ret = get_errno(statfs(path(p), &stfs)); 9355 unlock_user(p, arg1, 0); 9356 convert_statfs: 9357 if (!is_error(ret)) { 9358 struct target_statfs *target_stfs; 9359 9360 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0)) 9361 goto efault; 9362 __put_user(stfs.f_type, &target_stfs->f_type); 9363 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 9364 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 9365 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 9366 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 9367 __put_user(stfs.f_files, &target_stfs->f_files); 9368 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 9369 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 9370 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 9371 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 9372 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 9373 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 9374 unlock_user_struct(target_stfs, arg2, 1); 9375 } 9376 break; 9377 case TARGET_NR_fstatfs: 9378 ret = get_errno(fstatfs(arg1, &stfs)); 9379 goto convert_statfs; 9380 #ifdef TARGET_NR_statfs64 9381 case TARGET_NR_statfs64: 9382 if (!(p = lock_user_string(arg1))) 9383 goto efault; 9384 ret = get_errno(statfs(path(p), &stfs)); 9385 unlock_user(p, arg1, 0); 9386 convert_statfs64: 9387 if (!is_error(ret)) { 9388 struct target_statfs64 *target_stfs; 9389 9390 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0)) 9391 goto efault; 9392 __put_user(stfs.f_type, &target_stfs->f_type); 9393 __put_user(stfs.f_bsize, &target_stfs->f_bsize); 9394 __put_user(stfs.f_blocks, &target_stfs->f_blocks); 9395 __put_user(stfs.f_bfree, &target_stfs->f_bfree); 9396 __put_user(stfs.f_bavail, &target_stfs->f_bavail); 9397 __put_user(stfs.f_files, &target_stfs->f_files); 9398 __put_user(stfs.f_ffree, &target_stfs->f_ffree); 9399 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); 9400 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); 9401 __put_user(stfs.f_namelen, &target_stfs->f_namelen); 9402 __put_user(stfs.f_frsize, &target_stfs->f_frsize); 9403 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); 9404 unlock_user_struct(target_stfs, arg3, 1); 9405 } 9406 break; 9407 case TARGET_NR_fstatfs64: 9408 ret = get_errno(fstatfs(arg1, &stfs)); 9409 goto convert_statfs64; 9410 #endif 9411 #ifdef TARGET_NR_ioperm 9412 case TARGET_NR_ioperm: 9413 goto unimplemented; 9414 #endif 9415 #ifdef TARGET_NR_socketcall 9416 case TARGET_NR_socketcall: 9417 ret = do_socketcall(arg1, arg2); 9418 break; 9419 #endif 9420 #ifdef TARGET_NR_accept 9421 case TARGET_NR_accept: 9422 ret = do_accept4(arg1, arg2, arg3, 0); 9423 break; 9424 #endif 9425 #ifdef TARGET_NR_accept4 9426 case TARGET_NR_accept4: 9427 ret = do_accept4(arg1, arg2, arg3, arg4); 9428 break; 9429 #endif 9430 #ifdef TARGET_NR_bind 9431 case TARGET_NR_bind: 9432 ret = do_bind(arg1, arg2, arg3); 9433 break; 9434 #endif 9435 #ifdef TARGET_NR_connect 9436 case TARGET_NR_connect: 9437 ret = do_connect(arg1, arg2, arg3); 9438 break; 9439 #endif 9440 #ifdef TARGET_NR_getpeername 9441 case TARGET_NR_getpeername: 9442 ret = do_getpeername(arg1, arg2, arg3); 9443 break; 9444 #endif 9445 #ifdef TARGET_NR_getsockname 9446 case TARGET_NR_getsockname: 9447 ret = do_getsockname(arg1, arg2, arg3); 9448 break; 9449 #endif 9450 #ifdef TARGET_NR_getsockopt 9451 case TARGET_NR_getsockopt: 9452 ret = do_getsockopt(arg1, arg2, arg3, arg4, arg5); 9453 break; 9454 #endif 9455 #ifdef TARGET_NR_listen 9456 case TARGET_NR_listen: 9457 ret = get_errno(listen(arg1, arg2)); 9458 break; 9459 #endif 9460 #ifdef TARGET_NR_recv 9461 case TARGET_NR_recv: 9462 ret = do_recvfrom(arg1, arg2, arg3, arg4, 0, 0); 9463 break; 9464 #endif 9465 #ifdef TARGET_NR_recvfrom 9466 case TARGET_NR_recvfrom: 9467 ret = do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6); 9468 break; 9469 #endif 9470 #ifdef TARGET_NR_recvmsg 9471 case TARGET_NR_recvmsg: 9472 ret = do_sendrecvmsg(arg1, arg2, arg3, 0); 9473 break; 9474 #endif 9475 #ifdef TARGET_NR_send 9476 case TARGET_NR_send: 9477 ret = do_sendto(arg1, arg2, arg3, arg4, 0, 0); 9478 break; 9479 #endif 9480 #ifdef TARGET_NR_sendmsg 9481 case TARGET_NR_sendmsg: 9482 ret = do_sendrecvmsg(arg1, arg2, arg3, 1); 9483 break; 9484 #endif 9485 #ifdef TARGET_NR_sendmmsg 9486 case TARGET_NR_sendmmsg: 9487 ret = do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1); 9488 break; 9489 case TARGET_NR_recvmmsg: 9490 ret = do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0); 9491 break; 9492 #endif 9493 #ifdef TARGET_NR_sendto 9494 case TARGET_NR_sendto: 9495 ret = do_sendto(arg1, arg2, arg3, arg4, arg5, arg6); 9496 break; 9497 #endif 9498 #ifdef TARGET_NR_shutdown 9499 case TARGET_NR_shutdown: 9500 ret = get_errno(shutdown(arg1, arg2)); 9501 break; 9502 #endif 9503 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) 9504 case TARGET_NR_getrandom: 9505 p = lock_user(VERIFY_WRITE, arg1, arg2, 0); 9506 if (!p) { 9507 goto efault; 9508 } 9509 ret = get_errno(getrandom(p, arg2, arg3)); 9510 unlock_user(p, arg1, ret); 9511 break; 9512 #endif 9513 #ifdef TARGET_NR_socket 9514 case TARGET_NR_socket: 9515 ret = do_socket(arg1, arg2, arg3); 9516 break; 9517 #endif 9518 #ifdef TARGET_NR_socketpair 9519 case TARGET_NR_socketpair: 9520 ret = do_socketpair(arg1, arg2, arg3, arg4); 9521 break; 9522 #endif 9523 #ifdef TARGET_NR_setsockopt 9524 case TARGET_NR_setsockopt: 9525 ret = do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5); 9526 break; 9527 #endif 9528 #if defined(TARGET_NR_syslog) 9529 case TARGET_NR_syslog: 9530 { 9531 int len = arg2; 9532 9533 switch (arg1) { 9534 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */ 9535 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */ 9536 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */ 9537 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */ 9538 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */ 9539 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */ 9540 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */ 9541 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */ 9542 { 9543 ret = get_errno(sys_syslog((int)arg1, NULL, (int)arg3)); 9544 } 9545 break; 9546 case TARGET_SYSLOG_ACTION_READ: /* Read from log */ 9547 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */ 9548 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */ 9549 { 9550 ret = -TARGET_EINVAL; 9551 if (len < 0) { 9552 goto fail; 9553 } 9554 ret = 0; 9555 if (len == 0) { 9556 break; 9557 } 9558 p = lock_user(VERIFY_WRITE, arg2, arg3, 0); 9559 if (!p) { 9560 ret = -TARGET_EFAULT; 9561 goto fail; 9562 } 9563 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3)); 9564 unlock_user(p, arg2, arg3); 9565 } 9566 break; 9567 default: 9568 ret = -EINVAL; 9569 break; 9570 } 9571 } 9572 break; 9573 #endif 9574 case TARGET_NR_setitimer: 9575 { 9576 struct itimerval value, ovalue, *pvalue; 9577 9578 if (arg2) { 9579 pvalue = &value; 9580 if (copy_from_user_timeval(&pvalue->it_interval, arg2) 9581 || copy_from_user_timeval(&pvalue->it_value, 9582 arg2 + sizeof(struct target_timeval))) 9583 goto efault; 9584 } else { 9585 pvalue = NULL; 9586 } 9587 ret = get_errno(setitimer(arg1, pvalue, &ovalue)); 9588 if (!is_error(ret) && arg3) { 9589 if (copy_to_user_timeval(arg3, 9590 &ovalue.it_interval) 9591 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval), 9592 &ovalue.it_value)) 9593 goto efault; 9594 } 9595 } 9596 break; 9597 case TARGET_NR_getitimer: 9598 { 9599 struct itimerval value; 9600 9601 ret = get_errno(getitimer(arg1, &value)); 9602 if (!is_error(ret) && arg2) { 9603 if (copy_to_user_timeval(arg2, 9604 &value.it_interval) 9605 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval), 9606 &value.it_value)) 9607 goto efault; 9608 } 9609 } 9610 break; 9611 #ifdef TARGET_NR_stat 9612 case TARGET_NR_stat: 9613 if (!(p = lock_user_string(arg1))) 9614 goto efault; 9615 ret = get_errno(stat(path(p), &st)); 9616 unlock_user(p, arg1, 0); 9617 goto do_stat; 9618 #endif 9619 #ifdef TARGET_NR_lstat 9620 case TARGET_NR_lstat: 9621 if (!(p = lock_user_string(arg1))) 9622 goto efault; 9623 ret = get_errno(lstat(path(p), &st)); 9624 unlock_user(p, arg1, 0); 9625 goto do_stat; 9626 #endif 9627 case TARGET_NR_fstat: 9628 { 9629 ret = get_errno(fstat(arg1, &st)); 9630 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat) 9631 do_stat: 9632 #endif 9633 if (!is_error(ret)) { 9634 struct target_stat *target_st; 9635 9636 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0)) 9637 goto efault; 9638 memset(target_st, 0, sizeof(*target_st)); 9639 __put_user(st.st_dev, &target_st->st_dev); 9640 __put_user(st.st_ino, &target_st->st_ino); 9641 __put_user(st.st_mode, &target_st->st_mode); 9642 __put_user(st.st_uid, &target_st->st_uid); 9643 __put_user(st.st_gid, &target_st->st_gid); 9644 __put_user(st.st_nlink, &target_st->st_nlink); 9645 __put_user(st.st_rdev, &target_st->st_rdev); 9646 __put_user(st.st_size, &target_st->st_size); 9647 __put_user(st.st_blksize, &target_st->st_blksize); 9648 __put_user(st.st_blocks, &target_st->st_blocks); 9649 __put_user(st.st_atime, &target_st->target_st_atime); 9650 __put_user(st.st_mtime, &target_st->target_st_mtime); 9651 __put_user(st.st_ctime, &target_st->target_st_ctime); 9652 unlock_user_struct(target_st, arg2, 1); 9653 } 9654 } 9655 break; 9656 #ifdef TARGET_NR_olduname 9657 case TARGET_NR_olduname: 9658 goto unimplemented; 9659 #endif 9660 #ifdef TARGET_NR_iopl 9661 case TARGET_NR_iopl: 9662 goto unimplemented; 9663 #endif 9664 case TARGET_NR_vhangup: 9665 ret = get_errno(vhangup()); 9666 break; 9667 #ifdef TARGET_NR_idle 9668 case TARGET_NR_idle: 9669 goto unimplemented; 9670 #endif 9671 #ifdef TARGET_NR_syscall 9672 case TARGET_NR_syscall: 9673 ret = do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5, 9674 arg6, arg7, arg8, 0); 9675 break; 9676 #endif 9677 case TARGET_NR_wait4: 9678 { 9679 int status; 9680 abi_long status_ptr = arg2; 9681 struct rusage rusage, *rusage_ptr; 9682 abi_ulong target_rusage = arg4; 9683 abi_long rusage_err; 9684 if (target_rusage) 9685 rusage_ptr = &rusage; 9686 else 9687 rusage_ptr = NULL; 9688 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr)); 9689 if (!is_error(ret)) { 9690 if (status_ptr && ret) { 9691 status = host_to_target_waitstatus(status); 9692 if (put_user_s32(status, status_ptr)) 9693 goto efault; 9694 } 9695 if (target_rusage) { 9696 rusage_err = host_to_target_rusage(target_rusage, &rusage); 9697 if (rusage_err) { 9698 ret = rusage_err; 9699 } 9700 } 9701 } 9702 } 9703 break; 9704 #ifdef TARGET_NR_swapoff 9705 case TARGET_NR_swapoff: 9706 if (!(p = lock_user_string(arg1))) 9707 goto efault; 9708 ret = get_errno(swapoff(p)); 9709 unlock_user(p, arg1, 0); 9710 break; 9711 #endif 9712 case TARGET_NR_sysinfo: 9713 { 9714 struct target_sysinfo *target_value; 9715 struct sysinfo value; 9716 ret = get_errno(sysinfo(&value)); 9717 if (!is_error(ret) && arg1) 9718 { 9719 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0)) 9720 goto efault; 9721 __put_user(value.uptime, &target_value->uptime); 9722 __put_user(value.loads[0], &target_value->loads[0]); 9723 __put_user(value.loads[1], &target_value->loads[1]); 9724 __put_user(value.loads[2], &target_value->loads[2]); 9725 __put_user(value.totalram, &target_value->totalram); 9726 __put_user(value.freeram, &target_value->freeram); 9727 __put_user(value.sharedram, &target_value->sharedram); 9728 __put_user(value.bufferram, &target_value->bufferram); 9729 __put_user(value.totalswap, &target_value->totalswap); 9730 __put_user(value.freeswap, &target_value->freeswap); 9731 __put_user(value.procs, &target_value->procs); 9732 __put_user(value.totalhigh, &target_value->totalhigh); 9733 __put_user(value.freehigh, &target_value->freehigh); 9734 __put_user(value.mem_unit, &target_value->mem_unit); 9735 unlock_user_struct(target_value, arg1, 1); 9736 } 9737 } 9738 break; 9739 #ifdef TARGET_NR_ipc 9740 case TARGET_NR_ipc: 9741 ret = do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6); 9742 break; 9743 #endif 9744 #ifdef TARGET_NR_semget 9745 case TARGET_NR_semget: 9746 ret = get_errno(semget(arg1, arg2, arg3)); 9747 break; 9748 #endif 9749 #ifdef TARGET_NR_semop 9750 case TARGET_NR_semop: 9751 ret = do_semop(arg1, arg2, arg3); 9752 break; 9753 #endif 9754 #ifdef TARGET_NR_semctl 9755 case TARGET_NR_semctl: 9756 ret = do_semctl(arg1, arg2, arg3, arg4); 9757 break; 9758 #endif 9759 #ifdef TARGET_NR_msgctl 9760 case TARGET_NR_msgctl: 9761 ret = do_msgctl(arg1, arg2, arg3); 9762 break; 9763 #endif 9764 #ifdef TARGET_NR_msgget 9765 case TARGET_NR_msgget: 9766 ret = get_errno(msgget(arg1, arg2)); 9767 break; 9768 #endif 9769 #ifdef TARGET_NR_msgrcv 9770 case TARGET_NR_msgrcv: 9771 ret = do_msgrcv(arg1, arg2, arg3, arg4, arg5); 9772 break; 9773 #endif 9774 #ifdef TARGET_NR_msgsnd 9775 case TARGET_NR_msgsnd: 9776 ret = do_msgsnd(arg1, arg2, arg3, arg4); 9777 break; 9778 #endif 9779 #ifdef TARGET_NR_shmget 9780 case TARGET_NR_shmget: 9781 ret = get_errno(shmget(arg1, arg2, arg3)); 9782 break; 9783 #endif 9784 #ifdef TARGET_NR_shmctl 9785 case TARGET_NR_shmctl: 9786 ret = do_shmctl(arg1, arg2, arg3); 9787 break; 9788 #endif 9789 #ifdef TARGET_NR_shmat 9790 case TARGET_NR_shmat: 9791 ret = do_shmat(cpu_env, arg1, arg2, arg3); 9792 break; 9793 #endif 9794 #ifdef TARGET_NR_shmdt 9795 case TARGET_NR_shmdt: 9796 ret = do_shmdt(arg1); 9797 break; 9798 #endif 9799 case TARGET_NR_fsync: 9800 ret = get_errno(fsync(arg1)); 9801 break; 9802 case TARGET_NR_clone: 9803 /* Linux manages to have three different orderings for its 9804 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines 9805 * match the kernel's CONFIG_CLONE_* settings. 9806 * Microblaze is further special in that it uses a sixth 9807 * implicit argument to clone for the TLS pointer. 9808 */ 9809 #if defined(TARGET_MICROBLAZE) 9810 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5)); 9811 #elif defined(TARGET_CLONE_BACKWARDS) 9812 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5)); 9813 #elif defined(TARGET_CLONE_BACKWARDS2) 9814 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4)); 9815 #else 9816 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4)); 9817 #endif 9818 break; 9819 #ifdef __NR_exit_group 9820 /* new thread calls */ 9821 case TARGET_NR_exit_group: 9822 #ifdef TARGET_GPROF 9823 _mcleanup(); 9824 #endif 9825 gdb_exit(cpu_env, arg1); 9826 ret = get_errno(exit_group(arg1)); 9827 break; 9828 #endif 9829 case TARGET_NR_setdomainname: 9830 if (!(p = lock_user_string(arg1))) 9831 goto efault; 9832 ret = get_errno(setdomainname(p, arg2)); 9833 unlock_user(p, arg1, 0); 9834 break; 9835 case TARGET_NR_uname: 9836 /* no need to transcode because we use the linux syscall */ 9837 { 9838 struct new_utsname * buf; 9839 9840 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0)) 9841 goto efault; 9842 ret = get_errno(sys_uname(buf)); 9843 if (!is_error(ret)) { 9844 /* Overwrite the native machine name with whatever is being 9845 emulated. */ 9846 strcpy (buf->machine, cpu_to_uname_machine(cpu_env)); 9847 /* Allow the user to override the reported release. */ 9848 if (qemu_uname_release && *qemu_uname_release) { 9849 g_strlcpy(buf->release, qemu_uname_release, 9850 sizeof(buf->release)); 9851 } 9852 } 9853 unlock_user_struct(buf, arg1, 1); 9854 } 9855 break; 9856 #ifdef TARGET_I386 9857 case TARGET_NR_modify_ldt: 9858 ret = do_modify_ldt(cpu_env, arg1, arg2, arg3); 9859 break; 9860 #if !defined(TARGET_X86_64) 9861 case TARGET_NR_vm86old: 9862 goto unimplemented; 9863 case TARGET_NR_vm86: 9864 ret = do_vm86(cpu_env, arg1, arg2); 9865 break; 9866 #endif 9867 #endif 9868 case TARGET_NR_adjtimex: 9869 { 9870 struct timex host_buf; 9871 9872 if (target_to_host_timex(&host_buf, arg1) != 0) { 9873 goto efault; 9874 } 9875 ret = get_errno(adjtimex(&host_buf)); 9876 if (!is_error(ret)) { 9877 if (host_to_target_timex(arg1, &host_buf) != 0) { 9878 goto efault; 9879 } 9880 } 9881 } 9882 break; 9883 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME) 9884 case TARGET_NR_clock_adjtime: 9885 { 9886 struct timex htx, *phtx = &htx; 9887 9888 if (target_to_host_timex(phtx, arg2) != 0) { 9889 goto efault; 9890 } 9891 ret = get_errno(clock_adjtime(arg1, phtx)); 9892 if (!is_error(ret) && phtx) { 9893 if (host_to_target_timex(arg2, phtx) != 0) { 9894 goto efault; 9895 } 9896 } 9897 } 9898 break; 9899 #endif 9900 #ifdef TARGET_NR_create_module 9901 case TARGET_NR_create_module: 9902 #endif 9903 case TARGET_NR_init_module: 9904 case TARGET_NR_delete_module: 9905 #ifdef TARGET_NR_get_kernel_syms 9906 case TARGET_NR_get_kernel_syms: 9907 #endif 9908 goto unimplemented; 9909 case TARGET_NR_quotactl: 9910 goto unimplemented; 9911 case TARGET_NR_getpgid: 9912 ret = get_errno(getpgid(arg1)); 9913 break; 9914 case TARGET_NR_fchdir: 9915 ret = get_errno(fchdir(arg1)); 9916 break; 9917 #ifdef TARGET_NR_bdflush /* not on x86_64 */ 9918 case TARGET_NR_bdflush: 9919 goto unimplemented; 9920 #endif 9921 #ifdef TARGET_NR_sysfs 9922 case TARGET_NR_sysfs: 9923 goto unimplemented; 9924 #endif 9925 case TARGET_NR_personality: 9926 ret = get_errno(personality(arg1)); 9927 break; 9928 #ifdef TARGET_NR_afs_syscall 9929 case TARGET_NR_afs_syscall: 9930 goto unimplemented; 9931 #endif 9932 #ifdef TARGET_NR__llseek /* Not on alpha */ 9933 case TARGET_NR__llseek: 9934 { 9935 int64_t res; 9936 #if !defined(__NR_llseek) 9937 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5); 9938 if (res == -1) { 9939 ret = get_errno(res); 9940 } else { 9941 ret = 0; 9942 } 9943 #else 9944 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5)); 9945 #endif 9946 if ((ret == 0) && put_user_s64(res, arg4)) { 9947 goto efault; 9948 } 9949 } 9950 break; 9951 #endif 9952 #ifdef TARGET_NR_getdents 9953 case TARGET_NR_getdents: 9954 #ifdef __NR_getdents 9955 #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64 9956 { 9957 struct target_dirent *target_dirp; 9958 struct linux_dirent *dirp; 9959 abi_long count = arg3; 9960 9961 dirp = g_try_malloc(count); 9962 if (!dirp) { 9963 ret = -TARGET_ENOMEM; 9964 goto fail; 9965 } 9966 9967 ret = get_errno(sys_getdents(arg1, dirp, count)); 9968 if (!is_error(ret)) { 9969 struct linux_dirent *de; 9970 struct target_dirent *tde; 9971 int len = ret; 9972 int reclen, treclen; 9973 int count1, tnamelen; 9974 9975 count1 = 0; 9976 de = dirp; 9977 if (!(target_dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 9978 goto efault; 9979 tde = target_dirp; 9980 while (len > 0) { 9981 reclen = de->d_reclen; 9982 tnamelen = reclen - offsetof(struct linux_dirent, d_name); 9983 assert(tnamelen >= 0); 9984 treclen = tnamelen + offsetof(struct target_dirent, d_name); 9985 assert(count1 + treclen <= count); 9986 tde->d_reclen = tswap16(treclen); 9987 tde->d_ino = tswapal(de->d_ino); 9988 tde->d_off = tswapal(de->d_off); 9989 memcpy(tde->d_name, de->d_name, tnamelen); 9990 de = (struct linux_dirent *)((char *)de + reclen); 9991 len -= reclen; 9992 tde = (struct target_dirent *)((char *)tde + treclen); 9993 count1 += treclen; 9994 } 9995 ret = count1; 9996 unlock_user(target_dirp, arg2, ret); 9997 } 9998 g_free(dirp); 9999 } 10000 #else 10001 { 10002 struct linux_dirent *dirp; 10003 abi_long count = arg3; 10004 10005 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 10006 goto efault; 10007 ret = get_errno(sys_getdents(arg1, dirp, count)); 10008 if (!is_error(ret)) { 10009 struct linux_dirent *de; 10010 int len = ret; 10011 int reclen; 10012 de = dirp; 10013 while (len > 0) { 10014 reclen = de->d_reclen; 10015 if (reclen > len) 10016 break; 10017 de->d_reclen = tswap16(reclen); 10018 tswapls(&de->d_ino); 10019 tswapls(&de->d_off); 10020 de = (struct linux_dirent *)((char *)de + reclen); 10021 len -= reclen; 10022 } 10023 } 10024 unlock_user(dirp, arg2, ret); 10025 } 10026 #endif 10027 #else 10028 /* Implement getdents in terms of getdents64 */ 10029 { 10030 struct linux_dirent64 *dirp; 10031 abi_long count = arg3; 10032 10033 dirp = lock_user(VERIFY_WRITE, arg2, count, 0); 10034 if (!dirp) { 10035 goto efault; 10036 } 10037 ret = get_errno(sys_getdents64(arg1, dirp, count)); 10038 if (!is_error(ret)) { 10039 /* Convert the dirent64 structs to target dirent. We do this 10040 * in-place, since we can guarantee that a target_dirent is no 10041 * larger than a dirent64; however this means we have to be 10042 * careful to read everything before writing in the new format. 10043 */ 10044 struct linux_dirent64 *de; 10045 struct target_dirent *tde; 10046 int len = ret; 10047 int tlen = 0; 10048 10049 de = dirp; 10050 tde = (struct target_dirent *)dirp; 10051 while (len > 0) { 10052 int namelen, treclen; 10053 int reclen = de->d_reclen; 10054 uint64_t ino = de->d_ino; 10055 int64_t off = de->d_off; 10056 uint8_t type = de->d_type; 10057 10058 namelen = strlen(de->d_name); 10059 treclen = offsetof(struct target_dirent, d_name) 10060 + namelen + 2; 10061 treclen = QEMU_ALIGN_UP(treclen, sizeof(abi_long)); 10062 10063 memmove(tde->d_name, de->d_name, namelen + 1); 10064 tde->d_ino = tswapal(ino); 10065 tde->d_off = tswapal(off); 10066 tde->d_reclen = tswap16(treclen); 10067 /* The target_dirent type is in what was formerly a padding 10068 * byte at the end of the structure: 10069 */ 10070 *(((char *)tde) + treclen - 1) = type; 10071 10072 de = (struct linux_dirent64 *)((char *)de + reclen); 10073 tde = (struct target_dirent *)((char *)tde + treclen); 10074 len -= reclen; 10075 tlen += treclen; 10076 } 10077 ret = tlen; 10078 } 10079 unlock_user(dirp, arg2, ret); 10080 } 10081 #endif 10082 break; 10083 #endif /* TARGET_NR_getdents */ 10084 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) 10085 case TARGET_NR_getdents64: 10086 { 10087 struct linux_dirent64 *dirp; 10088 abi_long count = arg3; 10089 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) 10090 goto efault; 10091 ret = get_errno(sys_getdents64(arg1, dirp, count)); 10092 if (!is_error(ret)) { 10093 struct linux_dirent64 *de; 10094 int len = ret; 10095 int reclen; 10096 de = dirp; 10097 while (len > 0) { 10098 reclen = de->d_reclen; 10099 if (reclen > len) 10100 break; 10101 de->d_reclen = tswap16(reclen); 10102 tswap64s((uint64_t *)&de->d_ino); 10103 tswap64s((uint64_t *)&de->d_off); 10104 de = (struct linux_dirent64 *)((char *)de + reclen); 10105 len -= reclen; 10106 } 10107 } 10108 unlock_user(dirp, arg2, ret); 10109 } 10110 break; 10111 #endif /* TARGET_NR_getdents64 */ 10112 #if defined(TARGET_NR__newselect) 10113 case TARGET_NR__newselect: 10114 ret = do_select(arg1, arg2, arg3, arg4, arg5); 10115 break; 10116 #endif 10117 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) 10118 # ifdef TARGET_NR_poll 10119 case TARGET_NR_poll: 10120 # endif 10121 # ifdef TARGET_NR_ppoll 10122 case TARGET_NR_ppoll: 10123 # endif 10124 { 10125 struct target_pollfd *target_pfd; 10126 unsigned int nfds = arg2; 10127 struct pollfd *pfd; 10128 unsigned int i; 10129 10130 pfd = NULL; 10131 target_pfd = NULL; 10132 if (nfds) { 10133 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) { 10134 ret = -TARGET_EINVAL; 10135 break; 10136 } 10137 10138 target_pfd = lock_user(VERIFY_WRITE, arg1, 10139 sizeof(struct target_pollfd) * nfds, 1); 10140 if (!target_pfd) { 10141 goto efault; 10142 } 10143 10144 pfd = alloca(sizeof(struct pollfd) * nfds); 10145 for (i = 0; i < nfds; i++) { 10146 pfd[i].fd = tswap32(target_pfd[i].fd); 10147 pfd[i].events = tswap16(target_pfd[i].events); 10148 } 10149 } 10150 10151 switch (num) { 10152 # ifdef TARGET_NR_ppoll 10153 case TARGET_NR_ppoll: 10154 { 10155 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts; 10156 target_sigset_t *target_set; 10157 sigset_t _set, *set = &_set; 10158 10159 if (arg3) { 10160 if (target_to_host_timespec(timeout_ts, arg3)) { 10161 unlock_user(target_pfd, arg1, 0); 10162 goto efault; 10163 } 10164 } else { 10165 timeout_ts = NULL; 10166 } 10167 10168 if (arg4) { 10169 if (arg5 != sizeof(target_sigset_t)) { 10170 unlock_user(target_pfd, arg1, 0); 10171 ret = -TARGET_EINVAL; 10172 break; 10173 } 10174 10175 target_set = lock_user(VERIFY_READ, arg4, sizeof(target_sigset_t), 1); 10176 if (!target_set) { 10177 unlock_user(target_pfd, arg1, 0); 10178 goto efault; 10179 } 10180 target_to_host_sigset(set, target_set); 10181 } else { 10182 set = NULL; 10183 } 10184 10185 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts, 10186 set, SIGSET_T_SIZE)); 10187 10188 if (!is_error(ret) && arg3) { 10189 host_to_target_timespec(arg3, timeout_ts); 10190 } 10191 if (arg4) { 10192 unlock_user(target_set, arg4, 0); 10193 } 10194 break; 10195 } 10196 # endif 10197 # ifdef TARGET_NR_poll 10198 case TARGET_NR_poll: 10199 { 10200 struct timespec ts, *pts; 10201 10202 if (arg3 >= 0) { 10203 /* Convert ms to secs, ns */ 10204 ts.tv_sec = arg3 / 1000; 10205 ts.tv_nsec = (arg3 % 1000) * 1000000LL; 10206 pts = &ts; 10207 } else { 10208 /* -ve poll() timeout means "infinite" */ 10209 pts = NULL; 10210 } 10211 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0)); 10212 break; 10213 } 10214 # endif 10215 default: 10216 g_assert_not_reached(); 10217 } 10218 10219 if (!is_error(ret)) { 10220 for(i = 0; i < nfds; i++) { 10221 target_pfd[i].revents = tswap16(pfd[i].revents); 10222 } 10223 } 10224 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds); 10225 } 10226 break; 10227 #endif 10228 case TARGET_NR_flock: 10229 /* NOTE: the flock constant seems to be the same for every 10230 Linux platform */ 10231 ret = get_errno(safe_flock(arg1, arg2)); 10232 break; 10233 case TARGET_NR_readv: 10234 { 10235 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10236 if (vec != NULL) { 10237 ret = get_errno(safe_readv(arg1, vec, arg3)); 10238 unlock_iovec(vec, arg2, arg3, 1); 10239 } else { 10240 ret = -host_to_target_errno(errno); 10241 } 10242 } 10243 break; 10244 case TARGET_NR_writev: 10245 { 10246 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10247 if (vec != NULL) { 10248 ret = get_errno(safe_writev(arg1, vec, arg3)); 10249 unlock_iovec(vec, arg2, arg3, 0); 10250 } else { 10251 ret = -host_to_target_errno(errno); 10252 } 10253 } 10254 break; 10255 #if defined(TARGET_NR_preadv) 10256 case TARGET_NR_preadv: 10257 { 10258 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); 10259 if (vec != NULL) { 10260 ret = get_errno(safe_preadv(arg1, vec, arg3, arg4, arg5)); 10261 unlock_iovec(vec, arg2, arg3, 1); 10262 } else { 10263 ret = -host_to_target_errno(errno); 10264 } 10265 } 10266 break; 10267 #endif 10268 #if defined(TARGET_NR_pwritev) 10269 case TARGET_NR_pwritev: 10270 { 10271 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 10272 if (vec != NULL) { 10273 ret = get_errno(safe_pwritev(arg1, vec, arg3, arg4, arg5)); 10274 unlock_iovec(vec, arg2, arg3, 0); 10275 } else { 10276 ret = -host_to_target_errno(errno); 10277 } 10278 } 10279 break; 10280 #endif 10281 case TARGET_NR_getsid: 10282 ret = get_errno(getsid(arg1)); 10283 break; 10284 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */ 10285 case TARGET_NR_fdatasync: 10286 ret = get_errno(fdatasync(arg1)); 10287 break; 10288 #endif 10289 #ifdef TARGET_NR__sysctl 10290 case TARGET_NR__sysctl: 10291 /* We don't implement this, but ENOTDIR is always a safe 10292 return value. */ 10293 ret = -TARGET_ENOTDIR; 10294 break; 10295 #endif 10296 case TARGET_NR_sched_getaffinity: 10297 { 10298 unsigned int mask_size; 10299 unsigned long *mask; 10300 10301 /* 10302 * sched_getaffinity needs multiples of ulong, so need to take 10303 * care of mismatches between target ulong and host ulong sizes. 10304 */ 10305 if (arg2 & (sizeof(abi_ulong) - 1)) { 10306 ret = -TARGET_EINVAL; 10307 break; 10308 } 10309 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10310 10311 mask = alloca(mask_size); 10312 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask)); 10313 10314 if (!is_error(ret)) { 10315 if (ret > arg2) { 10316 /* More data returned than the caller's buffer will fit. 10317 * This only happens if sizeof(abi_long) < sizeof(long) 10318 * and the caller passed us a buffer holding an odd number 10319 * of abi_longs. If the host kernel is actually using the 10320 * extra 4 bytes then fail EINVAL; otherwise we can just 10321 * ignore them and only copy the interesting part. 10322 */ 10323 int numcpus = sysconf(_SC_NPROCESSORS_CONF); 10324 if (numcpus > arg2 * 8) { 10325 ret = -TARGET_EINVAL; 10326 break; 10327 } 10328 ret = arg2; 10329 } 10330 10331 if (copy_to_user(arg3, mask, ret)) { 10332 goto efault; 10333 } 10334 } 10335 } 10336 break; 10337 case TARGET_NR_sched_setaffinity: 10338 { 10339 unsigned int mask_size; 10340 unsigned long *mask; 10341 10342 /* 10343 * sched_setaffinity needs multiples of ulong, so need to take 10344 * care of mismatches between target ulong and host ulong sizes. 10345 */ 10346 if (arg2 & (sizeof(abi_ulong) - 1)) { 10347 ret = -TARGET_EINVAL; 10348 break; 10349 } 10350 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); 10351 10352 mask = alloca(mask_size); 10353 if (!lock_user_struct(VERIFY_READ, p, arg3, 1)) { 10354 goto efault; 10355 } 10356 memcpy(mask, p, arg2); 10357 unlock_user_struct(p, arg2, 0); 10358 10359 ret = get_errno(sys_sched_setaffinity(arg1, mask_size, mask)); 10360 } 10361 break; 10362 case TARGET_NR_sched_setparam: 10363 { 10364 struct sched_param *target_schp; 10365 struct sched_param schp; 10366 10367 if (arg2 == 0) { 10368 return -TARGET_EINVAL; 10369 } 10370 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) 10371 goto efault; 10372 schp.sched_priority = tswap32(target_schp->sched_priority); 10373 unlock_user_struct(target_schp, arg2, 0); 10374 ret = get_errno(sched_setparam(arg1, &schp)); 10375 } 10376 break; 10377 case TARGET_NR_sched_getparam: 10378 { 10379 struct sched_param *target_schp; 10380 struct sched_param schp; 10381 10382 if (arg2 == 0) { 10383 return -TARGET_EINVAL; 10384 } 10385 ret = get_errno(sched_getparam(arg1, &schp)); 10386 if (!is_error(ret)) { 10387 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) 10388 goto efault; 10389 target_schp->sched_priority = tswap32(schp.sched_priority); 10390 unlock_user_struct(target_schp, arg2, 1); 10391 } 10392 } 10393 break; 10394 case TARGET_NR_sched_setscheduler: 10395 { 10396 struct sched_param *target_schp; 10397 struct sched_param schp; 10398 if (arg3 == 0) { 10399 return -TARGET_EINVAL; 10400 } 10401 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) 10402 goto efault; 10403 schp.sched_priority = tswap32(target_schp->sched_priority); 10404 unlock_user_struct(target_schp, arg3, 0); 10405 ret = get_errno(sched_setscheduler(arg1, arg2, &schp)); 10406 } 10407 break; 10408 case TARGET_NR_sched_getscheduler: 10409 ret = get_errno(sched_getscheduler(arg1)); 10410 break; 10411 case TARGET_NR_sched_yield: 10412 ret = get_errno(sched_yield()); 10413 break; 10414 case TARGET_NR_sched_get_priority_max: 10415 ret = get_errno(sched_get_priority_max(arg1)); 10416 break; 10417 case TARGET_NR_sched_get_priority_min: 10418 ret = get_errno(sched_get_priority_min(arg1)); 10419 break; 10420 case TARGET_NR_sched_rr_get_interval: 10421 { 10422 struct timespec ts; 10423 ret = get_errno(sched_rr_get_interval(arg1, &ts)); 10424 if (!is_error(ret)) { 10425 ret = host_to_target_timespec(arg2, &ts); 10426 } 10427 } 10428 break; 10429 case TARGET_NR_nanosleep: 10430 { 10431 struct timespec req, rem; 10432 target_to_host_timespec(&req, arg1); 10433 ret = get_errno(safe_nanosleep(&req, &rem)); 10434 if (is_error(ret) && arg2) { 10435 host_to_target_timespec(arg2, &rem); 10436 } 10437 } 10438 break; 10439 #ifdef TARGET_NR_query_module 10440 case TARGET_NR_query_module: 10441 goto unimplemented; 10442 #endif 10443 #ifdef TARGET_NR_nfsservctl 10444 case TARGET_NR_nfsservctl: 10445 goto unimplemented; 10446 #endif 10447 case TARGET_NR_prctl: 10448 switch (arg1) { 10449 case PR_GET_PDEATHSIG: 10450 { 10451 int deathsig; 10452 ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5)); 10453 if (!is_error(ret) && arg2 10454 && put_user_ual(deathsig, arg2)) { 10455 goto efault; 10456 } 10457 break; 10458 } 10459 #ifdef PR_GET_NAME 10460 case PR_GET_NAME: 10461 { 10462 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1); 10463 if (!name) { 10464 goto efault; 10465 } 10466 ret = get_errno(prctl(arg1, (unsigned long)name, 10467 arg3, arg4, arg5)); 10468 unlock_user(name, arg2, 16); 10469 break; 10470 } 10471 case PR_SET_NAME: 10472 { 10473 void *name = lock_user(VERIFY_READ, arg2, 16, 1); 10474 if (!name) { 10475 goto efault; 10476 } 10477 ret = get_errno(prctl(arg1, (unsigned long)name, 10478 arg3, arg4, arg5)); 10479 unlock_user(name, arg2, 0); 10480 break; 10481 } 10482 #endif 10483 default: 10484 /* Most prctl options have no pointer arguments */ 10485 ret = get_errno(prctl(arg1, arg2, arg3, arg4, arg5)); 10486 break; 10487 } 10488 break; 10489 #ifdef TARGET_NR_arch_prctl 10490 case TARGET_NR_arch_prctl: 10491 #if defined(TARGET_I386) && !defined(TARGET_ABI32) 10492 ret = do_arch_prctl(cpu_env, arg1, arg2); 10493 break; 10494 #else 10495 goto unimplemented; 10496 #endif 10497 #endif 10498 #ifdef TARGET_NR_pread64 10499 case TARGET_NR_pread64: 10500 if (regpairs_aligned(cpu_env)) { 10501 arg4 = arg5; 10502 arg5 = arg6; 10503 } 10504 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) 10505 goto efault; 10506 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5))); 10507 unlock_user(p, arg2, ret); 10508 break; 10509 case TARGET_NR_pwrite64: 10510 if (regpairs_aligned(cpu_env)) { 10511 arg4 = arg5; 10512 arg5 = arg6; 10513 } 10514 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) 10515 goto efault; 10516 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5))); 10517 unlock_user(p, arg2, 0); 10518 break; 10519 #endif 10520 case TARGET_NR_getcwd: 10521 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0))) 10522 goto efault; 10523 ret = get_errno(sys_getcwd1(p, arg2)); 10524 unlock_user(p, arg1, ret); 10525 break; 10526 case TARGET_NR_capget: 10527 case TARGET_NR_capset: 10528 { 10529 struct target_user_cap_header *target_header; 10530 struct target_user_cap_data *target_data = NULL; 10531 struct __user_cap_header_struct header; 10532 struct __user_cap_data_struct data[2]; 10533 struct __user_cap_data_struct *dataptr = NULL; 10534 int i, target_datalen; 10535 int data_items = 1; 10536 10537 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) { 10538 goto efault; 10539 } 10540 header.version = tswap32(target_header->version); 10541 header.pid = tswap32(target_header->pid); 10542 10543 if (header.version != _LINUX_CAPABILITY_VERSION) { 10544 /* Version 2 and up takes pointer to two user_data structs */ 10545 data_items = 2; 10546 } 10547 10548 target_datalen = sizeof(*target_data) * data_items; 10549 10550 if (arg2) { 10551 if (num == TARGET_NR_capget) { 10552 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0); 10553 } else { 10554 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1); 10555 } 10556 if (!target_data) { 10557 unlock_user_struct(target_header, arg1, 0); 10558 goto efault; 10559 } 10560 10561 if (num == TARGET_NR_capset) { 10562 for (i = 0; i < data_items; i++) { 10563 data[i].effective = tswap32(target_data[i].effective); 10564 data[i].permitted = tswap32(target_data[i].permitted); 10565 data[i].inheritable = tswap32(target_data[i].inheritable); 10566 } 10567 } 10568 10569 dataptr = data; 10570 } 10571 10572 if (num == TARGET_NR_capget) { 10573 ret = get_errno(capget(&header, dataptr)); 10574 } else { 10575 ret = get_errno(capset(&header, dataptr)); 10576 } 10577 10578 /* The kernel always updates version for both capget and capset */ 10579 target_header->version = tswap32(header.version); 10580 unlock_user_struct(target_header, arg1, 1); 10581 10582 if (arg2) { 10583 if (num == TARGET_NR_capget) { 10584 for (i = 0; i < data_items; i++) { 10585 target_data[i].effective = tswap32(data[i].effective); 10586 target_data[i].permitted = tswap32(data[i].permitted); 10587 target_data[i].inheritable = tswap32(data[i].inheritable); 10588 } 10589 unlock_user(target_data, arg2, target_datalen); 10590 } else { 10591 unlock_user(target_data, arg2, 0); 10592 } 10593 } 10594 break; 10595 } 10596 case TARGET_NR_sigaltstack: 10597 ret = do_sigaltstack(arg1, arg2, get_sp_from_cpustate((CPUArchState *)cpu_env)); 10598 break; 10599 10600 #ifdef CONFIG_SENDFILE 10601 case TARGET_NR_sendfile: 10602 { 10603 off_t *offp = NULL; 10604 off_t off; 10605 if (arg3) { 10606 ret = get_user_sal(off, arg3); 10607 if (is_error(ret)) { 10608 break; 10609 } 10610 offp = &off; 10611 } 10612 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 10613 if (!is_error(ret) && arg3) { 10614 abi_long ret2 = put_user_sal(off, arg3); 10615 if (is_error(ret2)) { 10616 ret = ret2; 10617 } 10618 } 10619 break; 10620 } 10621 #ifdef TARGET_NR_sendfile64 10622 case TARGET_NR_sendfile64: 10623 { 10624 off_t *offp = NULL; 10625 off_t off; 10626 if (arg3) { 10627 ret = get_user_s64(off, arg3); 10628 if (is_error(ret)) { 10629 break; 10630 } 10631 offp = &off; 10632 } 10633 ret = get_errno(sendfile(arg1, arg2, offp, arg4)); 10634 if (!is_error(ret) && arg3) { 10635 abi_long ret2 = put_user_s64(off, arg3); 10636 if (is_error(ret2)) { 10637 ret = ret2; 10638 } 10639 } 10640 break; 10641 } 10642 #endif 10643 #else 10644 case TARGET_NR_sendfile: 10645 #ifdef TARGET_NR_sendfile64 10646 case TARGET_NR_sendfile64: 10647 #endif 10648 goto unimplemented; 10649 #endif 10650 10651 #ifdef TARGET_NR_getpmsg 10652 case TARGET_NR_getpmsg: 10653 goto unimplemented; 10654 #endif 10655 #ifdef TARGET_NR_putpmsg 10656 case TARGET_NR_putpmsg: 10657 goto unimplemented; 10658 #endif 10659 #ifdef TARGET_NR_vfork 10660 case TARGET_NR_vfork: 10661 ret = get_errno(do_fork(cpu_env, 10662 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD, 10663 0, 0, 0, 0)); 10664 break; 10665 #endif 10666 #ifdef TARGET_NR_ugetrlimit 10667 case TARGET_NR_ugetrlimit: 10668 { 10669 struct rlimit rlim; 10670 int resource = target_to_host_resource(arg1); 10671 ret = get_errno(getrlimit(resource, &rlim)); 10672 if (!is_error(ret)) { 10673 struct target_rlimit *target_rlim; 10674 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) 10675 goto efault; 10676 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); 10677 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); 10678 unlock_user_struct(target_rlim, arg2, 1); 10679 } 10680 break; 10681 } 10682 #endif 10683 #ifdef TARGET_NR_truncate64 10684 case TARGET_NR_truncate64: 10685 if (!(p = lock_user_string(arg1))) 10686 goto efault; 10687 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4); 10688 unlock_user(p, arg1, 0); 10689 break; 10690 #endif 10691 #ifdef TARGET_NR_ftruncate64 10692 case TARGET_NR_ftruncate64: 10693 ret = target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4); 10694 break; 10695 #endif 10696 #ifdef TARGET_NR_stat64 10697 case TARGET_NR_stat64: 10698 if (!(p = lock_user_string(arg1))) 10699 goto efault; 10700 ret = get_errno(stat(path(p), &st)); 10701 unlock_user(p, arg1, 0); 10702 if (!is_error(ret)) 10703 ret = host_to_target_stat64(cpu_env, arg2, &st); 10704 break; 10705 #endif 10706 #ifdef TARGET_NR_lstat64 10707 case TARGET_NR_lstat64: 10708 if (!(p = lock_user_string(arg1))) 10709 goto efault; 10710 ret = get_errno(lstat(path(p), &st)); 10711 unlock_user(p, arg1, 0); 10712 if (!is_error(ret)) 10713 ret = host_to_target_stat64(cpu_env, arg2, &st); 10714 break; 10715 #endif 10716 #ifdef TARGET_NR_fstat64 10717 case TARGET_NR_fstat64: 10718 ret = get_errno(fstat(arg1, &st)); 10719 if (!is_error(ret)) 10720 ret = host_to_target_stat64(cpu_env, arg2, &st); 10721 break; 10722 #endif 10723 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)) 10724 #ifdef TARGET_NR_fstatat64 10725 case TARGET_NR_fstatat64: 10726 #endif 10727 #ifdef TARGET_NR_newfstatat 10728 case TARGET_NR_newfstatat: 10729 #endif 10730 if (!(p = lock_user_string(arg2))) 10731 goto efault; 10732 ret = get_errno(fstatat(arg1, path(p), &st, arg4)); 10733 if (!is_error(ret)) 10734 ret = host_to_target_stat64(cpu_env, arg3, &st); 10735 break; 10736 #endif 10737 #ifdef TARGET_NR_lchown 10738 case TARGET_NR_lchown: 10739 if (!(p = lock_user_string(arg1))) 10740 goto efault; 10741 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3))); 10742 unlock_user(p, arg1, 0); 10743 break; 10744 #endif 10745 #ifdef TARGET_NR_getuid 10746 case TARGET_NR_getuid: 10747 ret = get_errno(high2lowuid(getuid())); 10748 break; 10749 #endif 10750 #ifdef TARGET_NR_getgid 10751 case TARGET_NR_getgid: 10752 ret = get_errno(high2lowgid(getgid())); 10753 break; 10754 #endif 10755 #ifdef TARGET_NR_geteuid 10756 case TARGET_NR_geteuid: 10757 ret = get_errno(high2lowuid(geteuid())); 10758 break; 10759 #endif 10760 #ifdef TARGET_NR_getegid 10761 case TARGET_NR_getegid: 10762 ret = get_errno(high2lowgid(getegid())); 10763 break; 10764 #endif 10765 case TARGET_NR_setreuid: 10766 ret = get_errno(setreuid(low2highuid(arg1), low2highuid(arg2))); 10767 break; 10768 case TARGET_NR_setregid: 10769 ret = get_errno(setregid(low2highgid(arg1), low2highgid(arg2))); 10770 break; 10771 case TARGET_NR_getgroups: 10772 { 10773 int gidsetsize = arg1; 10774 target_id *target_grouplist; 10775 gid_t *grouplist; 10776 int i; 10777 10778 grouplist = alloca(gidsetsize * sizeof(gid_t)); 10779 ret = get_errno(getgroups(gidsetsize, grouplist)); 10780 if (gidsetsize == 0) 10781 break; 10782 if (!is_error(ret)) { 10783 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0); 10784 if (!target_grouplist) 10785 goto efault; 10786 for(i = 0;i < ret; i++) 10787 target_grouplist[i] = tswapid(high2lowgid(grouplist[i])); 10788 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id)); 10789 } 10790 } 10791 break; 10792 case TARGET_NR_setgroups: 10793 { 10794 int gidsetsize = arg1; 10795 target_id *target_grouplist; 10796 gid_t *grouplist = NULL; 10797 int i; 10798 if (gidsetsize) { 10799 grouplist = alloca(gidsetsize * sizeof(gid_t)); 10800 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1); 10801 if (!target_grouplist) { 10802 ret = -TARGET_EFAULT; 10803 goto fail; 10804 } 10805 for (i = 0; i < gidsetsize; i++) { 10806 grouplist[i] = low2highgid(tswapid(target_grouplist[i])); 10807 } 10808 unlock_user(target_grouplist, arg2, 0); 10809 } 10810 ret = get_errno(setgroups(gidsetsize, grouplist)); 10811 } 10812 break; 10813 case TARGET_NR_fchown: 10814 ret = get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3))); 10815 break; 10816 #if defined(TARGET_NR_fchownat) 10817 case TARGET_NR_fchownat: 10818 if (!(p = lock_user_string(arg2))) 10819 goto efault; 10820 ret = get_errno(fchownat(arg1, p, low2highuid(arg3), 10821 low2highgid(arg4), arg5)); 10822 unlock_user(p, arg2, 0); 10823 break; 10824 #endif 10825 #ifdef TARGET_NR_setresuid 10826 case TARGET_NR_setresuid: 10827 ret = get_errno(sys_setresuid(low2highuid(arg1), 10828 low2highuid(arg2), 10829 low2highuid(arg3))); 10830 break; 10831 #endif 10832 #ifdef TARGET_NR_getresuid 10833 case TARGET_NR_getresuid: 10834 { 10835 uid_t ruid, euid, suid; 10836 ret = get_errno(getresuid(&ruid, &euid, &suid)); 10837 if (!is_error(ret)) { 10838 if (put_user_id(high2lowuid(ruid), arg1) 10839 || put_user_id(high2lowuid(euid), arg2) 10840 || put_user_id(high2lowuid(suid), arg3)) 10841 goto efault; 10842 } 10843 } 10844 break; 10845 #endif 10846 #ifdef TARGET_NR_getresgid 10847 case TARGET_NR_setresgid: 10848 ret = get_errno(sys_setresgid(low2highgid(arg1), 10849 low2highgid(arg2), 10850 low2highgid(arg3))); 10851 break; 10852 #endif 10853 #ifdef TARGET_NR_getresgid 10854 case TARGET_NR_getresgid: 10855 { 10856 gid_t rgid, egid, sgid; 10857 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 10858 if (!is_error(ret)) { 10859 if (put_user_id(high2lowgid(rgid), arg1) 10860 || put_user_id(high2lowgid(egid), arg2) 10861 || put_user_id(high2lowgid(sgid), arg3)) 10862 goto efault; 10863 } 10864 } 10865 break; 10866 #endif 10867 #ifdef TARGET_NR_chown 10868 case TARGET_NR_chown: 10869 if (!(p = lock_user_string(arg1))) 10870 goto efault; 10871 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3))); 10872 unlock_user(p, arg1, 0); 10873 break; 10874 #endif 10875 case TARGET_NR_setuid: 10876 ret = get_errno(sys_setuid(low2highuid(arg1))); 10877 break; 10878 case TARGET_NR_setgid: 10879 ret = get_errno(sys_setgid(low2highgid(arg1))); 10880 break; 10881 case TARGET_NR_setfsuid: 10882 ret = get_errno(setfsuid(arg1)); 10883 break; 10884 case TARGET_NR_setfsgid: 10885 ret = get_errno(setfsgid(arg1)); 10886 break; 10887 10888 #ifdef TARGET_NR_lchown32 10889 case TARGET_NR_lchown32: 10890 if (!(p = lock_user_string(arg1))) 10891 goto efault; 10892 ret = get_errno(lchown(p, arg2, arg3)); 10893 unlock_user(p, arg1, 0); 10894 break; 10895 #endif 10896 #ifdef TARGET_NR_getuid32 10897 case TARGET_NR_getuid32: 10898 ret = get_errno(getuid()); 10899 break; 10900 #endif 10901 10902 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA) 10903 /* Alpha specific */ 10904 case TARGET_NR_getxuid: 10905 { 10906 uid_t euid; 10907 euid=geteuid(); 10908 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid; 10909 } 10910 ret = get_errno(getuid()); 10911 break; 10912 #endif 10913 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA) 10914 /* Alpha specific */ 10915 case TARGET_NR_getxgid: 10916 { 10917 uid_t egid; 10918 egid=getegid(); 10919 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid; 10920 } 10921 ret = get_errno(getgid()); 10922 break; 10923 #endif 10924 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA) 10925 /* Alpha specific */ 10926 case TARGET_NR_osf_getsysinfo: 10927 ret = -TARGET_EOPNOTSUPP; 10928 switch (arg1) { 10929 case TARGET_GSI_IEEE_FP_CONTROL: 10930 { 10931 uint64_t swcr, fpcr = cpu_alpha_load_fpcr (cpu_env); 10932 10933 /* Copied from linux ieee_fpcr_to_swcr. */ 10934 swcr = (fpcr >> 35) & SWCR_STATUS_MASK; 10935 swcr |= (fpcr >> 36) & SWCR_MAP_DMZ; 10936 swcr |= (~fpcr >> 48) & (SWCR_TRAP_ENABLE_INV 10937 | SWCR_TRAP_ENABLE_DZE 10938 | SWCR_TRAP_ENABLE_OVF); 10939 swcr |= (~fpcr >> 57) & (SWCR_TRAP_ENABLE_UNF 10940 | SWCR_TRAP_ENABLE_INE); 10941 swcr |= (fpcr >> 47) & SWCR_MAP_UMZ; 10942 swcr |= (~fpcr >> 41) & SWCR_TRAP_ENABLE_DNO; 10943 10944 if (put_user_u64 (swcr, arg2)) 10945 goto efault; 10946 ret = 0; 10947 } 10948 break; 10949 10950 /* case GSI_IEEE_STATE_AT_SIGNAL: 10951 -- Not implemented in linux kernel. 10952 case GSI_UACPROC: 10953 -- Retrieves current unaligned access state; not much used. 10954 case GSI_PROC_TYPE: 10955 -- Retrieves implver information; surely not used. 10956 case GSI_GET_HWRPB: 10957 -- Grabs a copy of the HWRPB; surely not used. 10958 */ 10959 } 10960 break; 10961 #endif 10962 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA) 10963 /* Alpha specific */ 10964 case TARGET_NR_osf_setsysinfo: 10965 ret = -TARGET_EOPNOTSUPP; 10966 switch (arg1) { 10967 case TARGET_SSI_IEEE_FP_CONTROL: 10968 { 10969 uint64_t swcr, fpcr, orig_fpcr; 10970 10971 if (get_user_u64 (swcr, arg2)) { 10972 goto efault; 10973 } 10974 orig_fpcr = cpu_alpha_load_fpcr(cpu_env); 10975 fpcr = orig_fpcr & FPCR_DYN_MASK; 10976 10977 /* Copied from linux ieee_swcr_to_fpcr. */ 10978 fpcr |= (swcr & SWCR_STATUS_MASK) << 35; 10979 fpcr |= (swcr & SWCR_MAP_DMZ) << 36; 10980 fpcr |= (~swcr & (SWCR_TRAP_ENABLE_INV 10981 | SWCR_TRAP_ENABLE_DZE 10982 | SWCR_TRAP_ENABLE_OVF)) << 48; 10983 fpcr |= (~swcr & (SWCR_TRAP_ENABLE_UNF 10984 | SWCR_TRAP_ENABLE_INE)) << 57; 10985 fpcr |= (swcr & SWCR_MAP_UMZ ? FPCR_UNDZ | FPCR_UNFD : 0); 10986 fpcr |= (~swcr & SWCR_TRAP_ENABLE_DNO) << 41; 10987 10988 cpu_alpha_store_fpcr(cpu_env, fpcr); 10989 ret = 0; 10990 } 10991 break; 10992 10993 case TARGET_SSI_IEEE_RAISE_EXCEPTION: 10994 { 10995 uint64_t exc, fpcr, orig_fpcr; 10996 int si_code; 10997 10998 if (get_user_u64(exc, arg2)) { 10999 goto efault; 11000 } 11001 11002 orig_fpcr = cpu_alpha_load_fpcr(cpu_env); 11003 11004 /* We only add to the exception status here. */ 11005 fpcr = orig_fpcr | ((exc & SWCR_STATUS_MASK) << 35); 11006 11007 cpu_alpha_store_fpcr(cpu_env, fpcr); 11008 ret = 0; 11009 11010 /* Old exceptions are not signaled. */ 11011 fpcr &= ~(orig_fpcr & FPCR_STATUS_MASK); 11012 11013 /* If any exceptions set by this call, 11014 and are unmasked, send a signal. */ 11015 si_code = 0; 11016 if ((fpcr & (FPCR_INE | FPCR_INED)) == FPCR_INE) { 11017 si_code = TARGET_FPE_FLTRES; 11018 } 11019 if ((fpcr & (FPCR_UNF | FPCR_UNFD)) == FPCR_UNF) { 11020 si_code = TARGET_FPE_FLTUND; 11021 } 11022 if ((fpcr & (FPCR_OVF | FPCR_OVFD)) == FPCR_OVF) { 11023 si_code = TARGET_FPE_FLTOVF; 11024 } 11025 if ((fpcr & (FPCR_DZE | FPCR_DZED)) == FPCR_DZE) { 11026 si_code = TARGET_FPE_FLTDIV; 11027 } 11028 if ((fpcr & (FPCR_INV | FPCR_INVD)) == FPCR_INV) { 11029 si_code = TARGET_FPE_FLTINV; 11030 } 11031 if (si_code != 0) { 11032 target_siginfo_t info; 11033 info.si_signo = SIGFPE; 11034 info.si_errno = 0; 11035 info.si_code = si_code; 11036 info._sifields._sigfault._addr 11037 = ((CPUArchState *)cpu_env)->pc; 11038 queue_signal((CPUArchState *)cpu_env, info.si_signo, 11039 QEMU_SI_FAULT, &info); 11040 } 11041 } 11042 break; 11043 11044 /* case SSI_NVPAIRS: 11045 -- Used with SSIN_UACPROC to enable unaligned accesses. 11046 case SSI_IEEE_STATE_AT_SIGNAL: 11047 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 11048 -- Not implemented in linux kernel 11049 */ 11050 } 11051 break; 11052 #endif 11053 #ifdef TARGET_NR_osf_sigprocmask 11054 /* Alpha specific. */ 11055 case TARGET_NR_osf_sigprocmask: 11056 { 11057 abi_ulong mask; 11058 int how; 11059 sigset_t set, oldset; 11060 11061 switch(arg1) { 11062 case TARGET_SIG_BLOCK: 11063 how = SIG_BLOCK; 11064 break; 11065 case TARGET_SIG_UNBLOCK: 11066 how = SIG_UNBLOCK; 11067 break; 11068 case TARGET_SIG_SETMASK: 11069 how = SIG_SETMASK; 11070 break; 11071 default: 11072 ret = -TARGET_EINVAL; 11073 goto fail; 11074 } 11075 mask = arg2; 11076 target_to_host_old_sigset(&set, &mask); 11077 ret = do_sigprocmask(how, &set, &oldset); 11078 if (!ret) { 11079 host_to_target_old_sigset(&mask, &oldset); 11080 ret = mask; 11081 } 11082 } 11083 break; 11084 #endif 11085 11086 #ifdef TARGET_NR_getgid32 11087 case TARGET_NR_getgid32: 11088 ret = get_errno(getgid()); 11089 break; 11090 #endif 11091 #ifdef TARGET_NR_geteuid32 11092 case TARGET_NR_geteuid32: 11093 ret = get_errno(geteuid()); 11094 break; 11095 #endif 11096 #ifdef TARGET_NR_getegid32 11097 case TARGET_NR_getegid32: 11098 ret = get_errno(getegid()); 11099 break; 11100 #endif 11101 #ifdef TARGET_NR_setreuid32 11102 case TARGET_NR_setreuid32: 11103 ret = get_errno(setreuid(arg1, arg2)); 11104 break; 11105 #endif 11106 #ifdef TARGET_NR_setregid32 11107 case TARGET_NR_setregid32: 11108 ret = get_errno(setregid(arg1, arg2)); 11109 break; 11110 #endif 11111 #ifdef TARGET_NR_getgroups32 11112 case TARGET_NR_getgroups32: 11113 { 11114 int gidsetsize = arg1; 11115 uint32_t *target_grouplist; 11116 gid_t *grouplist; 11117 int i; 11118 11119 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11120 ret = get_errno(getgroups(gidsetsize, grouplist)); 11121 if (gidsetsize == 0) 11122 break; 11123 if (!is_error(ret)) { 11124 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0); 11125 if (!target_grouplist) { 11126 ret = -TARGET_EFAULT; 11127 goto fail; 11128 } 11129 for(i = 0;i < ret; i++) 11130 target_grouplist[i] = tswap32(grouplist[i]); 11131 unlock_user(target_grouplist, arg2, gidsetsize * 4); 11132 } 11133 } 11134 break; 11135 #endif 11136 #ifdef TARGET_NR_setgroups32 11137 case TARGET_NR_setgroups32: 11138 { 11139 int gidsetsize = arg1; 11140 uint32_t *target_grouplist; 11141 gid_t *grouplist; 11142 int i; 11143 11144 grouplist = alloca(gidsetsize * sizeof(gid_t)); 11145 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1); 11146 if (!target_grouplist) { 11147 ret = -TARGET_EFAULT; 11148 goto fail; 11149 } 11150 for(i = 0;i < gidsetsize; i++) 11151 grouplist[i] = tswap32(target_grouplist[i]); 11152 unlock_user(target_grouplist, arg2, 0); 11153 ret = get_errno(setgroups(gidsetsize, grouplist)); 11154 } 11155 break; 11156 #endif 11157 #ifdef TARGET_NR_fchown32 11158 case TARGET_NR_fchown32: 11159 ret = get_errno(fchown(arg1, arg2, arg3)); 11160 break; 11161 #endif 11162 #ifdef TARGET_NR_setresuid32 11163 case TARGET_NR_setresuid32: 11164 ret = get_errno(sys_setresuid(arg1, arg2, arg3)); 11165 break; 11166 #endif 11167 #ifdef TARGET_NR_getresuid32 11168 case TARGET_NR_getresuid32: 11169 { 11170 uid_t ruid, euid, suid; 11171 ret = get_errno(getresuid(&ruid, &euid, &suid)); 11172 if (!is_error(ret)) { 11173 if (put_user_u32(ruid, arg1) 11174 || put_user_u32(euid, arg2) 11175 || put_user_u32(suid, arg3)) 11176 goto efault; 11177 } 11178 } 11179 break; 11180 #endif 11181 #ifdef TARGET_NR_setresgid32 11182 case TARGET_NR_setresgid32: 11183 ret = get_errno(sys_setresgid(arg1, arg2, arg3)); 11184 break; 11185 #endif 11186 #ifdef TARGET_NR_getresgid32 11187 case TARGET_NR_getresgid32: 11188 { 11189 gid_t rgid, egid, sgid; 11190 ret = get_errno(getresgid(&rgid, &egid, &sgid)); 11191 if (!is_error(ret)) { 11192 if (put_user_u32(rgid, arg1) 11193 || put_user_u32(egid, arg2) 11194 || put_user_u32(sgid, arg3)) 11195 goto efault; 11196 } 11197 } 11198 break; 11199 #endif 11200 #ifdef TARGET_NR_chown32 11201 case TARGET_NR_chown32: 11202 if (!(p = lock_user_string(arg1))) 11203 goto efault; 11204 ret = get_errno(chown(p, arg2, arg3)); 11205 unlock_user(p, arg1, 0); 11206 break; 11207 #endif 11208 #ifdef TARGET_NR_setuid32 11209 case TARGET_NR_setuid32: 11210 ret = get_errno(sys_setuid(arg1)); 11211 break; 11212 #endif 11213 #ifdef TARGET_NR_setgid32 11214 case TARGET_NR_setgid32: 11215 ret = get_errno(sys_setgid(arg1)); 11216 break; 11217 #endif 11218 #ifdef TARGET_NR_setfsuid32 11219 case TARGET_NR_setfsuid32: 11220 ret = get_errno(setfsuid(arg1)); 11221 break; 11222 #endif 11223 #ifdef TARGET_NR_setfsgid32 11224 case TARGET_NR_setfsgid32: 11225 ret = get_errno(setfsgid(arg1)); 11226 break; 11227 #endif 11228 11229 case TARGET_NR_pivot_root: 11230 goto unimplemented; 11231 #ifdef TARGET_NR_mincore 11232 case TARGET_NR_mincore: 11233 { 11234 void *a; 11235 ret = -TARGET_ENOMEM; 11236 a = lock_user(VERIFY_READ, arg1, arg2, 0); 11237 if (!a) { 11238 goto fail; 11239 } 11240 ret = -TARGET_EFAULT; 11241 p = lock_user_string(arg3); 11242 if (!p) { 11243 goto mincore_fail; 11244 } 11245 ret = get_errno(mincore(a, arg2, p)); 11246 unlock_user(p, arg3, ret); 11247 mincore_fail: 11248 unlock_user(a, arg1, 0); 11249 } 11250 break; 11251 #endif 11252 #ifdef TARGET_NR_arm_fadvise64_64 11253 case TARGET_NR_arm_fadvise64_64: 11254 /* arm_fadvise64_64 looks like fadvise64_64 but 11255 * with different argument order: fd, advice, offset, len 11256 * rather than the usual fd, offset, len, advice. 11257 * Note that offset and len are both 64-bit so appear as 11258 * pairs of 32-bit registers. 11259 */ 11260 ret = posix_fadvise(arg1, target_offset64(arg3, arg4), 11261 target_offset64(arg5, arg6), arg2); 11262 ret = -host_to_target_errno(ret); 11263 break; 11264 #endif 11265 11266 #if TARGET_ABI_BITS == 32 11267 11268 #ifdef TARGET_NR_fadvise64_64 11269 case TARGET_NR_fadvise64_64: 11270 #if defined(TARGET_PPC) 11271 /* 6 args: fd, advice, offset (high, low), len (high, low) */ 11272 ret = arg2; 11273 arg2 = arg3; 11274 arg3 = arg4; 11275 arg4 = arg5; 11276 arg5 = arg6; 11277 arg6 = ret; 11278 #else 11279 /* 6 args: fd, offset (high, low), len (high, low), advice */ 11280 if (regpairs_aligned(cpu_env)) { 11281 /* offset is in (3,4), len in (5,6) and advice in 7 */ 11282 arg2 = arg3; 11283 arg3 = arg4; 11284 arg4 = arg5; 11285 arg5 = arg6; 11286 arg6 = arg7; 11287 } 11288 #endif 11289 ret = -host_to_target_errno(posix_fadvise(arg1, 11290 target_offset64(arg2, arg3), 11291 target_offset64(arg4, arg5), 11292 arg6)); 11293 break; 11294 #endif 11295 11296 #ifdef TARGET_NR_fadvise64 11297 case TARGET_NR_fadvise64: 11298 /* 5 args: fd, offset (high, low), len, advice */ 11299 if (regpairs_aligned(cpu_env)) { 11300 /* offset is in (3,4), len in 5 and advice in 6 */ 11301 arg2 = arg3; 11302 arg3 = arg4; 11303 arg4 = arg5; 11304 arg5 = arg6; 11305 } 11306 ret = -host_to_target_errno(posix_fadvise(arg1, 11307 target_offset64(arg2, arg3), 11308 arg4, arg5)); 11309 break; 11310 #endif 11311 11312 #else /* not a 32-bit ABI */ 11313 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64) 11314 #ifdef TARGET_NR_fadvise64_64 11315 case TARGET_NR_fadvise64_64: 11316 #endif 11317 #ifdef TARGET_NR_fadvise64 11318 case TARGET_NR_fadvise64: 11319 #endif 11320 #ifdef TARGET_S390X 11321 switch (arg4) { 11322 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */ 11323 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */ 11324 case 6: arg4 = POSIX_FADV_DONTNEED; break; 11325 case 7: arg4 = POSIX_FADV_NOREUSE; break; 11326 default: break; 11327 } 11328 #endif 11329 ret = -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4)); 11330 break; 11331 #endif 11332 #endif /* end of 64-bit ABI fadvise handling */ 11333 11334 #ifdef TARGET_NR_madvise 11335 case TARGET_NR_madvise: 11336 /* A straight passthrough may not be safe because qemu sometimes 11337 turns private file-backed mappings into anonymous mappings. 11338 This will break MADV_DONTNEED. 11339 This is a hint, so ignoring and returning success is ok. */ 11340 ret = get_errno(0); 11341 break; 11342 #endif 11343 #if TARGET_ABI_BITS == 32 11344 case TARGET_NR_fcntl64: 11345 { 11346 int cmd; 11347 struct flock64 fl; 11348 from_flock64_fn *copyfrom = copy_from_user_flock64; 11349 to_flock64_fn *copyto = copy_to_user_flock64; 11350 11351 #ifdef TARGET_ARM 11352 if (((CPUARMState *)cpu_env)->eabi) { 11353 copyfrom = copy_from_user_eabi_flock64; 11354 copyto = copy_to_user_eabi_flock64; 11355 } 11356 #endif 11357 11358 cmd = target_to_host_fcntl_cmd(arg2); 11359 if (cmd == -TARGET_EINVAL) { 11360 ret = cmd; 11361 break; 11362 } 11363 11364 switch(arg2) { 11365 case TARGET_F_GETLK64: 11366 ret = copyfrom(&fl, arg3); 11367 if (ret) { 11368 break; 11369 } 11370 ret = get_errno(fcntl(arg1, cmd, &fl)); 11371 if (ret == 0) { 11372 ret = copyto(arg3, &fl); 11373 } 11374 break; 11375 11376 case TARGET_F_SETLK64: 11377 case TARGET_F_SETLKW64: 11378 ret = copyfrom(&fl, arg3); 11379 if (ret) { 11380 break; 11381 } 11382 ret = get_errno(safe_fcntl(arg1, cmd, &fl)); 11383 break; 11384 default: 11385 ret = do_fcntl(arg1, arg2, arg3); 11386 break; 11387 } 11388 break; 11389 } 11390 #endif 11391 #ifdef TARGET_NR_cacheflush 11392 case TARGET_NR_cacheflush: 11393 /* self-modifying code is handled automatically, so nothing needed */ 11394 ret = 0; 11395 break; 11396 #endif 11397 #ifdef TARGET_NR_security 11398 case TARGET_NR_security: 11399 goto unimplemented; 11400 #endif 11401 #ifdef TARGET_NR_getpagesize 11402 case TARGET_NR_getpagesize: 11403 ret = TARGET_PAGE_SIZE; 11404 break; 11405 #endif 11406 case TARGET_NR_gettid: 11407 ret = get_errno(gettid()); 11408 break; 11409 #ifdef TARGET_NR_readahead 11410 case TARGET_NR_readahead: 11411 #if TARGET_ABI_BITS == 32 11412 if (regpairs_aligned(cpu_env)) { 11413 arg2 = arg3; 11414 arg3 = arg4; 11415 arg4 = arg5; 11416 } 11417 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4)); 11418 #else 11419 ret = get_errno(readahead(arg1, arg2, arg3)); 11420 #endif 11421 break; 11422 #endif 11423 #ifdef CONFIG_ATTR 11424 #ifdef TARGET_NR_setxattr 11425 case TARGET_NR_listxattr: 11426 case TARGET_NR_llistxattr: 11427 { 11428 void *p, *b = 0; 11429 if (arg2) { 11430 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11431 if (!b) { 11432 ret = -TARGET_EFAULT; 11433 break; 11434 } 11435 } 11436 p = lock_user_string(arg1); 11437 if (p) { 11438 if (num == TARGET_NR_listxattr) { 11439 ret = get_errno(listxattr(p, b, arg3)); 11440 } else { 11441 ret = get_errno(llistxattr(p, b, arg3)); 11442 } 11443 } else { 11444 ret = -TARGET_EFAULT; 11445 } 11446 unlock_user(p, arg1, 0); 11447 unlock_user(b, arg2, arg3); 11448 break; 11449 } 11450 case TARGET_NR_flistxattr: 11451 { 11452 void *b = 0; 11453 if (arg2) { 11454 b = lock_user(VERIFY_WRITE, arg2, arg3, 0); 11455 if (!b) { 11456 ret = -TARGET_EFAULT; 11457 break; 11458 } 11459 } 11460 ret = get_errno(flistxattr(arg1, b, arg3)); 11461 unlock_user(b, arg2, arg3); 11462 break; 11463 } 11464 case TARGET_NR_setxattr: 11465 case TARGET_NR_lsetxattr: 11466 { 11467 void *p, *n, *v = 0; 11468 if (arg3) { 11469 v = lock_user(VERIFY_READ, arg3, arg4, 1); 11470 if (!v) { 11471 ret = -TARGET_EFAULT; 11472 break; 11473 } 11474 } 11475 p = lock_user_string(arg1); 11476 n = lock_user_string(arg2); 11477 if (p && n) { 11478 if (num == TARGET_NR_setxattr) { 11479 ret = get_errno(setxattr(p, n, v, arg4, arg5)); 11480 } else { 11481 ret = get_errno(lsetxattr(p, n, v, arg4, arg5)); 11482 } 11483 } else { 11484 ret = -TARGET_EFAULT; 11485 } 11486 unlock_user(p, arg1, 0); 11487 unlock_user(n, arg2, 0); 11488 unlock_user(v, arg3, 0); 11489 } 11490 break; 11491 case TARGET_NR_fsetxattr: 11492 { 11493 void *n, *v = 0; 11494 if (arg3) { 11495 v = lock_user(VERIFY_READ, arg3, arg4, 1); 11496 if (!v) { 11497 ret = -TARGET_EFAULT; 11498 break; 11499 } 11500 } 11501 n = lock_user_string(arg2); 11502 if (n) { 11503 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5)); 11504 } else { 11505 ret = -TARGET_EFAULT; 11506 } 11507 unlock_user(n, arg2, 0); 11508 unlock_user(v, arg3, 0); 11509 } 11510 break; 11511 case TARGET_NR_getxattr: 11512 case TARGET_NR_lgetxattr: 11513 { 11514 void *p, *n, *v = 0; 11515 if (arg3) { 11516 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 11517 if (!v) { 11518 ret = -TARGET_EFAULT; 11519 break; 11520 } 11521 } 11522 p = lock_user_string(arg1); 11523 n = lock_user_string(arg2); 11524 if (p && n) { 11525 if (num == TARGET_NR_getxattr) { 11526 ret = get_errno(getxattr(p, n, v, arg4)); 11527 } else { 11528 ret = get_errno(lgetxattr(p, n, v, arg4)); 11529 } 11530 } else { 11531 ret = -TARGET_EFAULT; 11532 } 11533 unlock_user(p, arg1, 0); 11534 unlock_user(n, arg2, 0); 11535 unlock_user(v, arg3, arg4); 11536 } 11537 break; 11538 case TARGET_NR_fgetxattr: 11539 { 11540 void *n, *v = 0; 11541 if (arg3) { 11542 v = lock_user(VERIFY_WRITE, arg3, arg4, 0); 11543 if (!v) { 11544 ret = -TARGET_EFAULT; 11545 break; 11546 } 11547 } 11548 n = lock_user_string(arg2); 11549 if (n) { 11550 ret = get_errno(fgetxattr(arg1, n, v, arg4)); 11551 } else { 11552 ret = -TARGET_EFAULT; 11553 } 11554 unlock_user(n, arg2, 0); 11555 unlock_user(v, arg3, arg4); 11556 } 11557 break; 11558 case TARGET_NR_removexattr: 11559 case TARGET_NR_lremovexattr: 11560 { 11561 void *p, *n; 11562 p = lock_user_string(arg1); 11563 n = lock_user_string(arg2); 11564 if (p && n) { 11565 if (num == TARGET_NR_removexattr) { 11566 ret = get_errno(removexattr(p, n)); 11567 } else { 11568 ret = get_errno(lremovexattr(p, n)); 11569 } 11570 } else { 11571 ret = -TARGET_EFAULT; 11572 } 11573 unlock_user(p, arg1, 0); 11574 unlock_user(n, arg2, 0); 11575 } 11576 break; 11577 case TARGET_NR_fremovexattr: 11578 { 11579 void *n; 11580 n = lock_user_string(arg2); 11581 if (n) { 11582 ret = get_errno(fremovexattr(arg1, n)); 11583 } else { 11584 ret = -TARGET_EFAULT; 11585 } 11586 unlock_user(n, arg2, 0); 11587 } 11588 break; 11589 #endif 11590 #endif /* CONFIG_ATTR */ 11591 #ifdef TARGET_NR_set_thread_area 11592 case TARGET_NR_set_thread_area: 11593 #if defined(TARGET_MIPS) 11594 ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1; 11595 ret = 0; 11596 break; 11597 #elif defined(TARGET_CRIS) 11598 if (arg1 & 0xff) 11599 ret = -TARGET_EINVAL; 11600 else { 11601 ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1; 11602 ret = 0; 11603 } 11604 break; 11605 #elif defined(TARGET_I386) && defined(TARGET_ABI32) 11606 ret = do_set_thread_area(cpu_env, arg1); 11607 break; 11608 #elif defined(TARGET_M68K) 11609 { 11610 TaskState *ts = cpu->opaque; 11611 ts->tp_value = arg1; 11612 ret = 0; 11613 break; 11614 } 11615 #else 11616 goto unimplemented_nowarn; 11617 #endif 11618 #endif 11619 #ifdef TARGET_NR_get_thread_area 11620 case TARGET_NR_get_thread_area: 11621 #if defined(TARGET_I386) && defined(TARGET_ABI32) 11622 ret = do_get_thread_area(cpu_env, arg1); 11623 break; 11624 #elif defined(TARGET_M68K) 11625 { 11626 TaskState *ts = cpu->opaque; 11627 ret = ts->tp_value; 11628 break; 11629 } 11630 #else 11631 goto unimplemented_nowarn; 11632 #endif 11633 #endif 11634 #ifdef TARGET_NR_getdomainname 11635 case TARGET_NR_getdomainname: 11636 goto unimplemented_nowarn; 11637 #endif 11638 11639 #ifdef TARGET_NR_clock_gettime 11640 case TARGET_NR_clock_gettime: 11641 { 11642 struct timespec ts; 11643 ret = get_errno(clock_gettime(arg1, &ts)); 11644 if (!is_error(ret)) { 11645 host_to_target_timespec(arg2, &ts); 11646 } 11647 break; 11648 } 11649 #endif 11650 #ifdef TARGET_NR_clock_getres 11651 case TARGET_NR_clock_getres: 11652 { 11653 struct timespec ts; 11654 ret = get_errno(clock_getres(arg1, &ts)); 11655 if (!is_error(ret)) { 11656 host_to_target_timespec(arg2, &ts); 11657 } 11658 break; 11659 } 11660 #endif 11661 #ifdef TARGET_NR_clock_nanosleep 11662 case TARGET_NR_clock_nanosleep: 11663 { 11664 struct timespec ts; 11665 target_to_host_timespec(&ts, arg3); 11666 ret = get_errno(safe_clock_nanosleep(arg1, arg2, 11667 &ts, arg4 ? &ts : NULL)); 11668 if (arg4) 11669 host_to_target_timespec(arg4, &ts); 11670 11671 #if defined(TARGET_PPC) 11672 /* clock_nanosleep is odd in that it returns positive errno values. 11673 * On PPC, CR0 bit 3 should be set in such a situation. */ 11674 if (ret && ret != -TARGET_ERESTARTSYS) { 11675 ((CPUPPCState *)cpu_env)->crf[0] |= 1; 11676 } 11677 #endif 11678 break; 11679 } 11680 #endif 11681 11682 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) 11683 case TARGET_NR_set_tid_address: 11684 ret = get_errno(set_tid_address((int *)g2h(arg1))); 11685 break; 11686 #endif 11687 11688 case TARGET_NR_tkill: 11689 ret = get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2))); 11690 break; 11691 11692 case TARGET_NR_tgkill: 11693 ret = get_errno(safe_tgkill((int)arg1, (int)arg2, 11694 target_to_host_signal(arg3))); 11695 break; 11696 11697 #ifdef TARGET_NR_set_robust_list 11698 case TARGET_NR_set_robust_list: 11699 case TARGET_NR_get_robust_list: 11700 /* The ABI for supporting robust futexes has userspace pass 11701 * the kernel a pointer to a linked list which is updated by 11702 * userspace after the syscall; the list is walked by the kernel 11703 * when the thread exits. Since the linked list in QEMU guest 11704 * memory isn't a valid linked list for the host and we have 11705 * no way to reliably intercept the thread-death event, we can't 11706 * support these. Silently return ENOSYS so that guest userspace 11707 * falls back to a non-robust futex implementation (which should 11708 * be OK except in the corner case of the guest crashing while 11709 * holding a mutex that is shared with another process via 11710 * shared memory). 11711 */ 11712 goto unimplemented_nowarn; 11713 #endif 11714 11715 #if defined(TARGET_NR_utimensat) 11716 case TARGET_NR_utimensat: 11717 { 11718 struct timespec *tsp, ts[2]; 11719 if (!arg3) { 11720 tsp = NULL; 11721 } else { 11722 target_to_host_timespec(ts, arg3); 11723 target_to_host_timespec(ts+1, arg3+sizeof(struct target_timespec)); 11724 tsp = ts; 11725 } 11726 if (!arg2) 11727 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); 11728 else { 11729 if (!(p = lock_user_string(arg2))) { 11730 ret = -TARGET_EFAULT; 11731 goto fail; 11732 } 11733 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); 11734 unlock_user(p, arg2, 0); 11735 } 11736 } 11737 break; 11738 #endif 11739 case TARGET_NR_futex: 11740 ret = do_futex(arg1, arg2, arg3, arg4, arg5, arg6); 11741 break; 11742 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) 11743 case TARGET_NR_inotify_init: 11744 ret = get_errno(sys_inotify_init()); 11745 if (ret >= 0) { 11746 fd_trans_register(ret, &target_inotify_trans); 11747 } 11748 break; 11749 #endif 11750 #ifdef CONFIG_INOTIFY1 11751 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1) 11752 case TARGET_NR_inotify_init1: 11753 ret = get_errno(sys_inotify_init1(target_to_host_bitmask(arg1, 11754 fcntl_flags_tbl))); 11755 if (ret >= 0) { 11756 fd_trans_register(ret, &target_inotify_trans); 11757 } 11758 break; 11759 #endif 11760 #endif 11761 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) 11762 case TARGET_NR_inotify_add_watch: 11763 p = lock_user_string(arg2); 11764 ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3)); 11765 unlock_user(p, arg2, 0); 11766 break; 11767 #endif 11768 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) 11769 case TARGET_NR_inotify_rm_watch: 11770 ret = get_errno(sys_inotify_rm_watch(arg1, arg2)); 11771 break; 11772 #endif 11773 11774 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) 11775 case TARGET_NR_mq_open: 11776 { 11777 struct mq_attr posix_mq_attr; 11778 struct mq_attr *pposix_mq_attr; 11779 int host_flags; 11780 11781 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl); 11782 pposix_mq_attr = NULL; 11783 if (arg4) { 11784 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) { 11785 goto efault; 11786 } 11787 pposix_mq_attr = &posix_mq_attr; 11788 } 11789 p = lock_user_string(arg1 - 1); 11790 if (!p) { 11791 goto efault; 11792 } 11793 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr)); 11794 unlock_user (p, arg1, 0); 11795 } 11796 break; 11797 11798 case TARGET_NR_mq_unlink: 11799 p = lock_user_string(arg1 - 1); 11800 if (!p) { 11801 ret = -TARGET_EFAULT; 11802 break; 11803 } 11804 ret = get_errno(mq_unlink(p)); 11805 unlock_user (p, arg1, 0); 11806 break; 11807 11808 case TARGET_NR_mq_timedsend: 11809 { 11810 struct timespec ts; 11811 11812 p = lock_user (VERIFY_READ, arg2, arg3, 1); 11813 if (arg5 != 0) { 11814 target_to_host_timespec(&ts, arg5); 11815 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); 11816 host_to_target_timespec(arg5, &ts); 11817 } else { 11818 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); 11819 } 11820 unlock_user (p, arg2, arg3); 11821 } 11822 break; 11823 11824 case TARGET_NR_mq_timedreceive: 11825 { 11826 struct timespec ts; 11827 unsigned int prio; 11828 11829 p = lock_user (VERIFY_READ, arg2, arg3, 1); 11830 if (arg5 != 0) { 11831 target_to_host_timespec(&ts, arg5); 11832 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 11833 &prio, &ts)); 11834 host_to_target_timespec(arg5, &ts); 11835 } else { 11836 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, 11837 &prio, NULL)); 11838 } 11839 unlock_user (p, arg2, arg3); 11840 if (arg4 != 0) 11841 put_user_u32(prio, arg4); 11842 } 11843 break; 11844 11845 /* Not implemented for now... */ 11846 /* case TARGET_NR_mq_notify: */ 11847 /* break; */ 11848 11849 case TARGET_NR_mq_getsetattr: 11850 { 11851 struct mq_attr posix_mq_attr_in, posix_mq_attr_out; 11852 ret = 0; 11853 if (arg3 != 0) { 11854 ret = mq_getattr(arg1, &posix_mq_attr_out); 11855 copy_to_user_mq_attr(arg3, &posix_mq_attr_out); 11856 } 11857 if (arg2 != 0) { 11858 copy_from_user_mq_attr(&posix_mq_attr_in, arg2); 11859 ret |= mq_setattr(arg1, &posix_mq_attr_in, &posix_mq_attr_out); 11860 } 11861 11862 } 11863 break; 11864 #endif 11865 11866 #ifdef CONFIG_SPLICE 11867 #ifdef TARGET_NR_tee 11868 case TARGET_NR_tee: 11869 { 11870 ret = get_errno(tee(arg1,arg2,arg3,arg4)); 11871 } 11872 break; 11873 #endif 11874 #ifdef TARGET_NR_splice 11875 case TARGET_NR_splice: 11876 { 11877 loff_t loff_in, loff_out; 11878 loff_t *ploff_in = NULL, *ploff_out = NULL; 11879 if (arg2) { 11880 if (get_user_u64(loff_in, arg2)) { 11881 goto efault; 11882 } 11883 ploff_in = &loff_in; 11884 } 11885 if (arg4) { 11886 if (get_user_u64(loff_out, arg4)) { 11887 goto efault; 11888 } 11889 ploff_out = &loff_out; 11890 } 11891 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6)); 11892 if (arg2) { 11893 if (put_user_u64(loff_in, arg2)) { 11894 goto efault; 11895 } 11896 } 11897 if (arg4) { 11898 if (put_user_u64(loff_out, arg4)) { 11899 goto efault; 11900 } 11901 } 11902 } 11903 break; 11904 #endif 11905 #ifdef TARGET_NR_vmsplice 11906 case TARGET_NR_vmsplice: 11907 { 11908 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); 11909 if (vec != NULL) { 11910 ret = get_errno(vmsplice(arg1, vec, arg3, arg4)); 11911 unlock_iovec(vec, arg2, arg3, 0); 11912 } else { 11913 ret = -host_to_target_errno(errno); 11914 } 11915 } 11916 break; 11917 #endif 11918 #endif /* CONFIG_SPLICE */ 11919 #ifdef CONFIG_EVENTFD 11920 #if defined(TARGET_NR_eventfd) 11921 case TARGET_NR_eventfd: 11922 ret = get_errno(eventfd(arg1, 0)); 11923 if (ret >= 0) { 11924 fd_trans_register(ret, &target_eventfd_trans); 11925 } 11926 break; 11927 #endif 11928 #if defined(TARGET_NR_eventfd2) 11929 case TARGET_NR_eventfd2: 11930 { 11931 int host_flags = arg2 & (~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC)); 11932 if (arg2 & TARGET_O_NONBLOCK) { 11933 host_flags |= O_NONBLOCK; 11934 } 11935 if (arg2 & TARGET_O_CLOEXEC) { 11936 host_flags |= O_CLOEXEC; 11937 } 11938 ret = get_errno(eventfd(arg1, host_flags)); 11939 if (ret >= 0) { 11940 fd_trans_register(ret, &target_eventfd_trans); 11941 } 11942 break; 11943 } 11944 #endif 11945 #endif /* CONFIG_EVENTFD */ 11946 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate) 11947 case TARGET_NR_fallocate: 11948 #if TARGET_ABI_BITS == 32 11949 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4), 11950 target_offset64(arg5, arg6))); 11951 #else 11952 ret = get_errno(fallocate(arg1, arg2, arg3, arg4)); 11953 #endif 11954 break; 11955 #endif 11956 #if defined(CONFIG_SYNC_FILE_RANGE) 11957 #if defined(TARGET_NR_sync_file_range) 11958 case TARGET_NR_sync_file_range: 11959 #if TARGET_ABI_BITS == 32 11960 #if defined(TARGET_MIPS) 11961 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 11962 target_offset64(arg5, arg6), arg7)); 11963 #else 11964 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3), 11965 target_offset64(arg4, arg5), arg6)); 11966 #endif /* !TARGET_MIPS */ 11967 #else 11968 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4)); 11969 #endif 11970 break; 11971 #endif 11972 #if defined(TARGET_NR_sync_file_range2) 11973 case TARGET_NR_sync_file_range2: 11974 /* This is like sync_file_range but the arguments are reordered */ 11975 #if TARGET_ABI_BITS == 32 11976 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), 11977 target_offset64(arg5, arg6), arg2)); 11978 #else 11979 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2)); 11980 #endif 11981 break; 11982 #endif 11983 #endif 11984 #if defined(TARGET_NR_signalfd4) 11985 case TARGET_NR_signalfd4: 11986 ret = do_signalfd4(arg1, arg2, arg4); 11987 break; 11988 #endif 11989 #if defined(TARGET_NR_signalfd) 11990 case TARGET_NR_signalfd: 11991 ret = do_signalfd4(arg1, arg2, 0); 11992 break; 11993 #endif 11994 #if defined(CONFIG_EPOLL) 11995 #if defined(TARGET_NR_epoll_create) 11996 case TARGET_NR_epoll_create: 11997 ret = get_errno(epoll_create(arg1)); 11998 break; 11999 #endif 12000 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1) 12001 case TARGET_NR_epoll_create1: 12002 ret = get_errno(epoll_create1(arg1)); 12003 break; 12004 #endif 12005 #if defined(TARGET_NR_epoll_ctl) 12006 case TARGET_NR_epoll_ctl: 12007 { 12008 struct epoll_event ep; 12009 struct epoll_event *epp = 0; 12010 if (arg4) { 12011 struct target_epoll_event *target_ep; 12012 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) { 12013 goto efault; 12014 } 12015 ep.events = tswap32(target_ep->events); 12016 /* The epoll_data_t union is just opaque data to the kernel, 12017 * so we transfer all 64 bits across and need not worry what 12018 * actual data type it is. 12019 */ 12020 ep.data.u64 = tswap64(target_ep->data.u64); 12021 unlock_user_struct(target_ep, arg4, 0); 12022 epp = &ep; 12023 } 12024 ret = get_errno(epoll_ctl(arg1, arg2, arg3, epp)); 12025 break; 12026 } 12027 #endif 12028 12029 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait) 12030 #if defined(TARGET_NR_epoll_wait) 12031 case TARGET_NR_epoll_wait: 12032 #endif 12033 #if defined(TARGET_NR_epoll_pwait) 12034 case TARGET_NR_epoll_pwait: 12035 #endif 12036 { 12037 struct target_epoll_event *target_ep; 12038 struct epoll_event *ep; 12039 int epfd = arg1; 12040 int maxevents = arg3; 12041 int timeout = arg4; 12042 12043 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) { 12044 ret = -TARGET_EINVAL; 12045 break; 12046 } 12047 12048 target_ep = lock_user(VERIFY_WRITE, arg2, 12049 maxevents * sizeof(struct target_epoll_event), 1); 12050 if (!target_ep) { 12051 goto efault; 12052 } 12053 12054 ep = g_try_new(struct epoll_event, maxevents); 12055 if (!ep) { 12056 unlock_user(target_ep, arg2, 0); 12057 ret = -TARGET_ENOMEM; 12058 break; 12059 } 12060 12061 switch (num) { 12062 #if defined(TARGET_NR_epoll_pwait) 12063 case TARGET_NR_epoll_pwait: 12064 { 12065 target_sigset_t *target_set; 12066 sigset_t _set, *set = &_set; 12067 12068 if (arg5) { 12069 if (arg6 != sizeof(target_sigset_t)) { 12070 ret = -TARGET_EINVAL; 12071 break; 12072 } 12073 12074 target_set = lock_user(VERIFY_READ, arg5, 12075 sizeof(target_sigset_t), 1); 12076 if (!target_set) { 12077 ret = -TARGET_EFAULT; 12078 break; 12079 } 12080 target_to_host_sigset(set, target_set); 12081 unlock_user(target_set, arg5, 0); 12082 } else { 12083 set = NULL; 12084 } 12085 12086 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12087 set, SIGSET_T_SIZE)); 12088 break; 12089 } 12090 #endif 12091 #if defined(TARGET_NR_epoll_wait) 12092 case TARGET_NR_epoll_wait: 12093 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, 12094 NULL, 0)); 12095 break; 12096 #endif 12097 default: 12098 ret = -TARGET_ENOSYS; 12099 } 12100 if (!is_error(ret)) { 12101 int i; 12102 for (i = 0; i < ret; i++) { 12103 target_ep[i].events = tswap32(ep[i].events); 12104 target_ep[i].data.u64 = tswap64(ep[i].data.u64); 12105 } 12106 unlock_user(target_ep, arg2, 12107 ret * sizeof(struct target_epoll_event)); 12108 } else { 12109 unlock_user(target_ep, arg2, 0); 12110 } 12111 g_free(ep); 12112 break; 12113 } 12114 #endif 12115 #endif 12116 #ifdef TARGET_NR_prlimit64 12117 case TARGET_NR_prlimit64: 12118 { 12119 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */ 12120 struct target_rlimit64 *target_rnew, *target_rold; 12121 struct host_rlimit64 rnew, rold, *rnewp = 0; 12122 int resource = target_to_host_resource(arg2); 12123 if (arg3) { 12124 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) { 12125 goto efault; 12126 } 12127 rnew.rlim_cur = tswap64(target_rnew->rlim_cur); 12128 rnew.rlim_max = tswap64(target_rnew->rlim_max); 12129 unlock_user_struct(target_rnew, arg3, 0); 12130 rnewp = &rnew; 12131 } 12132 12133 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0)); 12134 if (!is_error(ret) && arg4) { 12135 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) { 12136 goto efault; 12137 } 12138 target_rold->rlim_cur = tswap64(rold.rlim_cur); 12139 target_rold->rlim_max = tswap64(rold.rlim_max); 12140 unlock_user_struct(target_rold, arg4, 1); 12141 } 12142 break; 12143 } 12144 #endif 12145 #ifdef TARGET_NR_gethostname 12146 case TARGET_NR_gethostname: 12147 { 12148 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0); 12149 if (name) { 12150 ret = get_errno(gethostname(name, arg2)); 12151 unlock_user(name, arg1, arg2); 12152 } else { 12153 ret = -TARGET_EFAULT; 12154 } 12155 break; 12156 } 12157 #endif 12158 #ifdef TARGET_NR_atomic_cmpxchg_32 12159 case TARGET_NR_atomic_cmpxchg_32: 12160 { 12161 /* should use start_exclusive from main.c */ 12162 abi_ulong mem_value; 12163 if (get_user_u32(mem_value, arg6)) { 12164 target_siginfo_t info; 12165 info.si_signo = SIGSEGV; 12166 info.si_errno = 0; 12167 info.si_code = TARGET_SEGV_MAPERR; 12168 info._sifields._sigfault._addr = arg6; 12169 queue_signal((CPUArchState *)cpu_env, info.si_signo, 12170 QEMU_SI_FAULT, &info); 12171 ret = 0xdeadbeef; 12172 12173 } 12174 if (mem_value == arg2) 12175 put_user_u32(arg1, arg6); 12176 ret = mem_value; 12177 break; 12178 } 12179 #endif 12180 #ifdef TARGET_NR_atomic_barrier 12181 case TARGET_NR_atomic_barrier: 12182 { 12183 /* Like the kernel implementation and the qemu arm barrier, no-op this? */ 12184 ret = 0; 12185 break; 12186 } 12187 #endif 12188 12189 #ifdef TARGET_NR_timer_create 12190 case TARGET_NR_timer_create: 12191 { 12192 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */ 12193 12194 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL; 12195 12196 int clkid = arg1; 12197 int timer_index = next_free_host_timer(); 12198 12199 if (timer_index < 0) { 12200 ret = -TARGET_EAGAIN; 12201 } else { 12202 timer_t *phtimer = g_posix_timers + timer_index; 12203 12204 if (arg2) { 12205 phost_sevp = &host_sevp; 12206 ret = target_to_host_sigevent(phost_sevp, arg2); 12207 if (ret != 0) { 12208 break; 12209 } 12210 } 12211 12212 ret = get_errno(timer_create(clkid, phost_sevp, phtimer)); 12213 if (ret) { 12214 phtimer = NULL; 12215 } else { 12216 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) { 12217 goto efault; 12218 } 12219 } 12220 } 12221 break; 12222 } 12223 #endif 12224 12225 #ifdef TARGET_NR_timer_settime 12226 case TARGET_NR_timer_settime: 12227 { 12228 /* args: timer_t timerid, int flags, const struct itimerspec *new_value, 12229 * struct itimerspec * old_value */ 12230 target_timer_t timerid = get_timer_id(arg1); 12231 12232 if (timerid < 0) { 12233 ret = timerid; 12234 } else if (arg3 == 0) { 12235 ret = -TARGET_EINVAL; 12236 } else { 12237 timer_t htimer = g_posix_timers[timerid]; 12238 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; 12239 12240 if (target_to_host_itimerspec(&hspec_new, arg3)) { 12241 goto efault; 12242 } 12243 ret = get_errno( 12244 timer_settime(htimer, arg2, &hspec_new, &hspec_old)); 12245 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) { 12246 goto efault; 12247 } 12248 } 12249 break; 12250 } 12251 #endif 12252 12253 #ifdef TARGET_NR_timer_gettime 12254 case TARGET_NR_timer_gettime: 12255 { 12256 /* args: timer_t timerid, struct itimerspec *curr_value */ 12257 target_timer_t timerid = get_timer_id(arg1); 12258 12259 if (timerid < 0) { 12260 ret = timerid; 12261 } else if (!arg2) { 12262 ret = -TARGET_EFAULT; 12263 } else { 12264 timer_t htimer = g_posix_timers[timerid]; 12265 struct itimerspec hspec; 12266 ret = get_errno(timer_gettime(htimer, &hspec)); 12267 12268 if (host_to_target_itimerspec(arg2, &hspec)) { 12269 ret = -TARGET_EFAULT; 12270 } 12271 } 12272 break; 12273 } 12274 #endif 12275 12276 #ifdef TARGET_NR_timer_getoverrun 12277 case TARGET_NR_timer_getoverrun: 12278 { 12279 /* args: timer_t timerid */ 12280 target_timer_t timerid = get_timer_id(arg1); 12281 12282 if (timerid < 0) { 12283 ret = timerid; 12284 } else { 12285 timer_t htimer = g_posix_timers[timerid]; 12286 ret = get_errno(timer_getoverrun(htimer)); 12287 } 12288 fd_trans_unregister(ret); 12289 break; 12290 } 12291 #endif 12292 12293 #ifdef TARGET_NR_timer_delete 12294 case TARGET_NR_timer_delete: 12295 { 12296 /* args: timer_t timerid */ 12297 target_timer_t timerid = get_timer_id(arg1); 12298 12299 if (timerid < 0) { 12300 ret = timerid; 12301 } else { 12302 timer_t htimer = g_posix_timers[timerid]; 12303 ret = get_errno(timer_delete(htimer)); 12304 g_posix_timers[timerid] = 0; 12305 } 12306 break; 12307 } 12308 #endif 12309 12310 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD) 12311 case TARGET_NR_timerfd_create: 12312 ret = get_errno(timerfd_create(arg1, 12313 target_to_host_bitmask(arg2, fcntl_flags_tbl))); 12314 break; 12315 #endif 12316 12317 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD) 12318 case TARGET_NR_timerfd_gettime: 12319 { 12320 struct itimerspec its_curr; 12321 12322 ret = get_errno(timerfd_gettime(arg1, &its_curr)); 12323 12324 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) { 12325 goto efault; 12326 } 12327 } 12328 break; 12329 #endif 12330 12331 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD) 12332 case TARGET_NR_timerfd_settime: 12333 { 12334 struct itimerspec its_new, its_old, *p_new; 12335 12336 if (arg3) { 12337 if (target_to_host_itimerspec(&its_new, arg3)) { 12338 goto efault; 12339 } 12340 p_new = &its_new; 12341 } else { 12342 p_new = NULL; 12343 } 12344 12345 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); 12346 12347 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) { 12348 goto efault; 12349 } 12350 } 12351 break; 12352 #endif 12353 12354 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) 12355 case TARGET_NR_ioprio_get: 12356 ret = get_errno(ioprio_get(arg1, arg2)); 12357 break; 12358 #endif 12359 12360 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) 12361 case TARGET_NR_ioprio_set: 12362 ret = get_errno(ioprio_set(arg1, arg2, arg3)); 12363 break; 12364 #endif 12365 12366 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS) 12367 case TARGET_NR_setns: 12368 ret = get_errno(setns(arg1, arg2)); 12369 break; 12370 #endif 12371 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS) 12372 case TARGET_NR_unshare: 12373 ret = get_errno(unshare(arg1)); 12374 break; 12375 #endif 12376 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp) 12377 case TARGET_NR_kcmp: 12378 ret = get_errno(kcmp(arg1, arg2, arg3, arg4, arg5)); 12379 break; 12380 #endif 12381 12382 default: 12383 unimplemented: 12384 gemu_log("qemu: Unsupported syscall: %d\n", num); 12385 #if defined(TARGET_NR_setxattr) || defined(TARGET_NR_get_thread_area) || defined(TARGET_NR_getdomainname) || defined(TARGET_NR_set_robust_list) 12386 unimplemented_nowarn: 12387 #endif 12388 ret = -TARGET_ENOSYS; 12389 break; 12390 } 12391 fail: 12392 #ifdef DEBUG 12393 gemu_log(" = " TARGET_ABI_FMT_ld "\n", ret); 12394 #endif 12395 if(do_strace) 12396 print_syscall_ret(num, ret); 12397 trace_guest_user_syscall_ret(cpu, num, ret); 12398 return ret; 12399 efault: 12400 ret = -TARGET_EFAULT; 12401 goto fail; 12402 } 12403