1 /* 2 * Conversion between 32-bit and 64-bit native system calls. 3 * 4 * Copyright (C) 2000 Silicon Graphics, Inc. 5 * Written by Ulf Carlsson (ulfc@engr.sgi.com) 6 * sys32_execve from ia64/ia32 code, Feb 2000, Kanoj Sarcar (kanoj@sgi.com) 7 */ 8 #include <linux/config.h> 9 #include <linux/compiler.h> 10 #include <linux/mm.h> 11 #include <linux/errno.h> 12 #include <linux/file.h> 13 #include <linux/smp_lock.h> 14 #include <linux/highuid.h> 15 #include <linux/dirent.h> 16 #include <linux/resource.h> 17 #include <linux/highmem.h> 18 #include <linux/time.h> 19 #include <linux/times.h> 20 #include <linux/poll.h> 21 #include <linux/slab.h> 22 #include <linux/skbuff.h> 23 #include <linux/filter.h> 24 #include <linux/shm.h> 25 #include <linux/sem.h> 26 #include <linux/msg.h> 27 #include <linux/icmpv6.h> 28 #include <linux/syscalls.h> 29 #include <linux/sysctl.h> 30 #include <linux/utime.h> 31 #include <linux/utsname.h> 32 #include <linux/personality.h> 33 #include <linux/timex.h> 34 #include <linux/dnotify.h> 35 #include <linux/module.h> 36 #include <linux/binfmts.h> 37 #include <linux/security.h> 38 #include <linux/compat.h> 39 #include <linux/vfs.h> 40 41 #include <net/sock.h> 42 #include <net/scm.h> 43 44 #include <asm/ipc.h> 45 #include <asm/sim.h> 46 #include <asm/uaccess.h> 47 #include <asm/mmu_context.h> 48 #include <asm/mman.h> 49 50 /* Use this to get at 32-bit user passed pointers. */ 51 /* A() macro should be used for places where you e.g. 52 have some internal variable u32 and just want to get 53 rid of a compiler warning. AA() has to be used in 54 places where you want to convert a function argument 55 to 32bit pointer or when you e.g. access pt_regs 56 structure and want to consider 32bit registers only. 57 */ 58 #define A(__x) ((unsigned long)(__x)) 59 #define AA(__x) ((unsigned long)((int)__x)) 60 61 #ifdef __MIPSEB__ 62 #define merge_64(r1,r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL)) 63 #endif 64 #ifdef __MIPSEL__ 65 #define merge_64(r1,r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL)) 66 #endif 67 68 /* 69 * Revalidate the inode. This is required for proper NFS attribute caching. 70 */ 71 72 int cp_compat_stat(struct kstat *stat, struct compat_stat *statbuf) 73 { 74 struct compat_stat tmp; 75 76 if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev)) 77 return -EOVERFLOW; 78 79 memset(&tmp, 0, sizeof(tmp)); 80 tmp.st_dev = new_encode_dev(stat->dev); 81 tmp.st_ino = stat->ino; 82 tmp.st_mode = stat->mode; 83 tmp.st_nlink = stat->nlink; 84 SET_UID(tmp.st_uid, stat->uid); 85 SET_GID(tmp.st_gid, stat->gid); 86 tmp.st_rdev = new_encode_dev(stat->rdev); 87 tmp.st_size = stat->size; 88 tmp.st_atime = stat->atime.tv_sec; 89 tmp.st_mtime = stat->mtime.tv_sec; 90 tmp.st_ctime = stat->ctime.tv_sec; 91 #ifdef STAT_HAVE_NSEC 92 tmp.st_atime_nsec = stat->atime.tv_nsec; 93 tmp.st_mtime_nsec = stat->mtime.tv_nsec; 94 tmp.st_ctime_nsec = stat->ctime.tv_nsec; 95 #endif 96 tmp.st_blocks = stat->blocks; 97 tmp.st_blksize = stat->blksize; 98 return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0; 99 } 100 101 asmlinkage unsigned long 102 sys32_mmap2(unsigned long addr, unsigned long len, unsigned long prot, 103 unsigned long flags, unsigned long fd, unsigned long pgoff) 104 { 105 struct file * file = NULL; 106 unsigned long error; 107 108 error = -EINVAL; 109 if (!(flags & MAP_ANONYMOUS)) { 110 error = -EBADF; 111 file = fget(fd); 112 if (!file) 113 goto out; 114 } 115 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); 116 117 down_write(¤t->mm->mmap_sem); 118 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); 119 up_write(¤t->mm->mmap_sem); 120 if (file) 121 fput(file); 122 123 out: 124 return error; 125 } 126 127 128 asmlinkage int sys_truncate64(const char *path, unsigned int high, 129 unsigned int low) 130 { 131 if ((int)high < 0) 132 return -EINVAL; 133 return sys_truncate(path, ((long) high << 32) | low); 134 } 135 136 asmlinkage int sys_ftruncate64(unsigned int fd, unsigned int high, 137 unsigned int low) 138 { 139 if ((int)high < 0) 140 return -EINVAL; 141 return sys_ftruncate(fd, ((long) high << 32) | low); 142 } 143 144 /* 145 * sys_execve() executes a new program. 146 */ 147 asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs) 148 { 149 int error; 150 char * filename; 151 152 filename = getname(compat_ptr(regs.regs[4])); 153 error = PTR_ERR(filename); 154 if (IS_ERR(filename)) 155 goto out; 156 error = compat_do_execve(filename, compat_ptr(regs.regs[5]), 157 compat_ptr(regs.regs[6]), ®s); 158 putname(filename); 159 160 out: 161 return error; 162 } 163 164 struct dirent32 { 165 unsigned int d_ino; 166 unsigned int d_off; 167 unsigned short d_reclen; 168 char d_name[NAME_MAX + 1]; 169 }; 170 171 static void 172 xlate_dirent(void *dirent64, void *dirent32, long n) 173 { 174 long off; 175 struct dirent *dirp; 176 struct dirent32 *dirp32; 177 178 off = 0; 179 while (off < n) { 180 dirp = (struct dirent *)(dirent64 + off); 181 dirp32 = (struct dirent32 *)(dirent32 + off); 182 off += dirp->d_reclen; 183 dirp32->d_ino = dirp->d_ino; 184 dirp32->d_off = (unsigned int)dirp->d_off; 185 dirp32->d_reclen = dirp->d_reclen; 186 strncpy(dirp32->d_name, dirp->d_name, dirp->d_reclen - ((3 * 4) + 2)); 187 } 188 return; 189 } 190 191 asmlinkage long 192 sys32_getdents(unsigned int fd, void * dirent32, unsigned int count) 193 { 194 long n; 195 void *dirent64; 196 197 dirent64 = (void *)((unsigned long)(dirent32 + (sizeof(long) - 1)) & ~(sizeof(long) - 1)); 198 if ((n = sys_getdents(fd, dirent64, count - (dirent64 - dirent32))) < 0) 199 return(n); 200 xlate_dirent(dirent64, dirent32, n); 201 return(n); 202 } 203 204 asmlinkage int old_readdir(unsigned int fd, void * dirent, unsigned int count); 205 206 asmlinkage int 207 sys32_readdir(unsigned int fd, void * dirent32, unsigned int count) 208 { 209 int n; 210 struct dirent dirent64; 211 212 if ((n = old_readdir(fd, &dirent64, count)) < 0) 213 return(n); 214 xlate_dirent(&dirent64, dirent32, dirent64.d_reclen); 215 return(n); 216 } 217 218 struct rusage32 { 219 struct compat_timeval ru_utime; 220 struct compat_timeval ru_stime; 221 int ru_maxrss; 222 int ru_ixrss; 223 int ru_idrss; 224 int ru_isrss; 225 int ru_minflt; 226 int ru_majflt; 227 int ru_nswap; 228 int ru_inblock; 229 int ru_oublock; 230 int ru_msgsnd; 231 int ru_msgrcv; 232 int ru_nsignals; 233 int ru_nvcsw; 234 int ru_nivcsw; 235 }; 236 237 static int 238 put_rusage (struct rusage32 *ru, struct rusage *r) 239 { 240 int err; 241 242 if (!access_ok(VERIFY_WRITE, ru, sizeof *ru)) 243 return -EFAULT; 244 245 err = __put_user (r->ru_utime.tv_sec, &ru->ru_utime.tv_sec); 246 err |= __put_user (r->ru_utime.tv_usec, &ru->ru_utime.tv_usec); 247 err |= __put_user (r->ru_stime.tv_sec, &ru->ru_stime.tv_sec); 248 err |= __put_user (r->ru_stime.tv_usec, &ru->ru_stime.tv_usec); 249 err |= __put_user (r->ru_maxrss, &ru->ru_maxrss); 250 err |= __put_user (r->ru_ixrss, &ru->ru_ixrss); 251 err |= __put_user (r->ru_idrss, &ru->ru_idrss); 252 err |= __put_user (r->ru_isrss, &ru->ru_isrss); 253 err |= __put_user (r->ru_minflt, &ru->ru_minflt); 254 err |= __put_user (r->ru_majflt, &ru->ru_majflt); 255 err |= __put_user (r->ru_nswap, &ru->ru_nswap); 256 err |= __put_user (r->ru_inblock, &ru->ru_inblock); 257 err |= __put_user (r->ru_oublock, &ru->ru_oublock); 258 err |= __put_user (r->ru_msgsnd, &ru->ru_msgsnd); 259 err |= __put_user (r->ru_msgrcv, &ru->ru_msgrcv); 260 err |= __put_user (r->ru_nsignals, &ru->ru_nsignals); 261 err |= __put_user (r->ru_nvcsw, &ru->ru_nvcsw); 262 err |= __put_user (r->ru_nivcsw, &ru->ru_nivcsw); 263 264 return err; 265 } 266 267 asmlinkage int 268 sys32_wait4(compat_pid_t pid, unsigned int * stat_addr, int options, 269 struct rusage32 * ru) 270 { 271 if (!ru) 272 return sys_wait4(pid, stat_addr, options, NULL); 273 else { 274 struct rusage r; 275 int ret; 276 unsigned int status; 277 mm_segment_t old_fs = get_fs(); 278 279 set_fs(KERNEL_DS); 280 ret = sys_wait4(pid, stat_addr ? &status : NULL, options, &r); 281 set_fs(old_fs); 282 if (put_rusage (ru, &r)) return -EFAULT; 283 if (stat_addr && put_user (status, stat_addr)) 284 return -EFAULT; 285 return ret; 286 } 287 } 288 289 asmlinkage int 290 sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, int options) 291 { 292 return sys32_wait4(pid, stat_addr, options, NULL); 293 } 294 295 struct sysinfo32 { 296 s32 uptime; 297 u32 loads[3]; 298 u32 totalram; 299 u32 freeram; 300 u32 sharedram; 301 u32 bufferram; 302 u32 totalswap; 303 u32 freeswap; 304 u16 procs; 305 u32 totalhigh; 306 u32 freehigh; 307 u32 mem_unit; 308 char _f[8]; 309 }; 310 311 asmlinkage int sys32_sysinfo(struct sysinfo32 *info) 312 { 313 struct sysinfo s; 314 int ret, err; 315 mm_segment_t old_fs = get_fs (); 316 317 set_fs (KERNEL_DS); 318 ret = sys_sysinfo(&s); 319 set_fs (old_fs); 320 err = put_user (s.uptime, &info->uptime); 321 err |= __put_user (s.loads[0], &info->loads[0]); 322 err |= __put_user (s.loads[1], &info->loads[1]); 323 err |= __put_user (s.loads[2], &info->loads[2]); 324 err |= __put_user (s.totalram, &info->totalram); 325 err |= __put_user (s.freeram, &info->freeram); 326 err |= __put_user (s.sharedram, &info->sharedram); 327 err |= __put_user (s.bufferram, &info->bufferram); 328 err |= __put_user (s.totalswap, &info->totalswap); 329 err |= __put_user (s.freeswap, &info->freeswap); 330 err |= __put_user (s.procs, &info->procs); 331 err |= __put_user (s.totalhigh, &info->totalhigh); 332 err |= __put_user (s.freehigh, &info->freehigh); 333 err |= __put_user (s.mem_unit, &info->mem_unit); 334 if (err) 335 return -EFAULT; 336 return ret; 337 } 338 339 #define RLIM_INFINITY32 0x7fffffff 340 #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x) 341 342 struct rlimit32 { 343 int rlim_cur; 344 int rlim_max; 345 }; 346 347 #ifdef __MIPSEB__ 348 asmlinkage long sys32_truncate64(const char * path, unsigned long __dummy, 349 int length_hi, int length_lo) 350 #endif 351 #ifdef __MIPSEL__ 352 asmlinkage long sys32_truncate64(const char * path, unsigned long __dummy, 353 int length_lo, int length_hi) 354 #endif 355 { 356 loff_t length; 357 358 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo; 359 360 return sys_truncate(path, length); 361 } 362 363 #ifdef __MIPSEB__ 364 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy, 365 int length_hi, int length_lo) 366 #endif 367 #ifdef __MIPSEL__ 368 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy, 369 int length_lo, int length_hi) 370 #endif 371 { 372 loff_t length; 373 374 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo; 375 376 return sys_ftruncate(fd, length); 377 } 378 379 static inline long 380 get_tv32(struct timeval *o, struct compat_timeval *i) 381 { 382 return (!access_ok(VERIFY_READ, i, sizeof(*i)) || 383 (__get_user(o->tv_sec, &i->tv_sec) | 384 __get_user(o->tv_usec, &i->tv_usec))); 385 } 386 387 static inline long 388 put_tv32(struct compat_timeval *o, struct timeval *i) 389 { 390 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || 391 (__put_user(i->tv_sec, &o->tv_sec) | 392 __put_user(i->tv_usec, &o->tv_usec))); 393 } 394 395 extern struct timezone sys_tz; 396 397 asmlinkage int 398 sys32_gettimeofday(struct compat_timeval *tv, struct timezone *tz) 399 { 400 if (tv) { 401 struct timeval ktv; 402 do_gettimeofday(&ktv); 403 if (put_tv32(tv, &ktv)) 404 return -EFAULT; 405 } 406 if (tz) { 407 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) 408 return -EFAULT; 409 } 410 return 0; 411 } 412 413 static inline long get_ts32(struct timespec *o, struct compat_timeval *i) 414 { 415 long usec; 416 417 if (!access_ok(VERIFY_READ, i, sizeof(*i))) 418 return -EFAULT; 419 if (__get_user(o->tv_sec, &i->tv_sec)) 420 return -EFAULT; 421 if (__get_user(usec, &i->tv_usec)) 422 return -EFAULT; 423 o->tv_nsec = usec * 1000; 424 return 0; 425 } 426 427 asmlinkage int 428 sys32_settimeofday(struct compat_timeval *tv, struct timezone *tz) 429 { 430 struct timespec kts; 431 struct timezone ktz; 432 433 if (tv) { 434 if (get_ts32(&kts, tv)) 435 return -EFAULT; 436 } 437 if (tz) { 438 if (copy_from_user(&ktz, tz, sizeof(ktz))) 439 return -EFAULT; 440 } 441 442 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); 443 } 444 445 asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high, 446 unsigned int offset_low, loff_t * result, 447 unsigned int origin) 448 { 449 return sys_llseek(fd, offset_high, offset_low, result, origin); 450 } 451 452 /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op + 453 lseek back to original location. They fail just like lseek does on 454 non-seekable files. */ 455 456 asmlinkage ssize_t sys32_pread(unsigned int fd, char * buf, 457 size_t count, u32 unused, u64 a4, u64 a5) 458 { 459 ssize_t ret; 460 struct file * file; 461 ssize_t (*read)(struct file *, char *, size_t, loff_t *); 462 loff_t pos; 463 464 ret = -EBADF; 465 file = fget(fd); 466 if (!file) 467 goto bad_file; 468 if (!(file->f_mode & FMODE_READ)) 469 goto out; 470 pos = merge_64(a4, a5); 471 ret = rw_verify_area(READ, file, &pos, count); 472 if (ret) 473 goto out; 474 ret = -EINVAL; 475 if (!file->f_op || !(read = file->f_op->read)) 476 goto out; 477 if (pos < 0) 478 goto out; 479 ret = -ESPIPE; 480 if (!(file->f_mode & FMODE_PREAD)) 481 goto out; 482 ret = read(file, buf, count, &pos); 483 if (ret > 0) 484 dnotify_parent(file->f_dentry, DN_ACCESS); 485 out: 486 fput(file); 487 bad_file: 488 return ret; 489 } 490 491 asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char * buf, 492 size_t count, u32 unused, u64 a4, u64 a5) 493 { 494 ssize_t ret; 495 struct file * file; 496 ssize_t (*write)(struct file *, const char *, size_t, loff_t *); 497 loff_t pos; 498 499 ret = -EBADF; 500 file = fget(fd); 501 if (!file) 502 goto bad_file; 503 if (!(file->f_mode & FMODE_WRITE)) 504 goto out; 505 pos = merge_64(a4, a5); 506 ret = rw_verify_area(WRITE, file, &pos, count); 507 if (ret) 508 goto out; 509 ret = -EINVAL; 510 if (!file->f_op || !(write = file->f_op->write)) 511 goto out; 512 if (pos < 0) 513 goto out; 514 515 ret = -ESPIPE; 516 if (!(file->f_mode & FMODE_PWRITE)) 517 goto out; 518 519 ret = write(file, buf, count, &pos); 520 if (ret > 0) 521 dnotify_parent(file->f_dentry, DN_MODIFY); 522 out: 523 fput(file); 524 bad_file: 525 return ret; 526 } 527 528 asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid, 529 struct compat_timespec *interval) 530 { 531 struct timespec t; 532 int ret; 533 mm_segment_t old_fs = get_fs (); 534 535 set_fs (KERNEL_DS); 536 ret = sys_sched_rr_get_interval(pid, &t); 537 set_fs (old_fs); 538 if (put_user (t.tv_sec, &interval->tv_sec) || 539 __put_user (t.tv_nsec, &interval->tv_nsec)) 540 return -EFAULT; 541 return ret; 542 } 543 544 struct msgbuf32 { s32 mtype; char mtext[1]; }; 545 546 struct ipc_perm32 547 { 548 key_t key; 549 compat_uid_t uid; 550 compat_gid_t gid; 551 compat_uid_t cuid; 552 compat_gid_t cgid; 553 compat_mode_t mode; 554 unsigned short seq; 555 }; 556 557 struct ipc64_perm32 { 558 key_t key; 559 compat_uid_t uid; 560 compat_gid_t gid; 561 compat_uid_t cuid; 562 compat_gid_t cgid; 563 compat_mode_t mode; 564 unsigned short seq; 565 unsigned short __pad1; 566 unsigned int __unused1; 567 unsigned int __unused2; 568 }; 569 570 struct semid_ds32 { 571 struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */ 572 compat_time_t sem_otime; /* last semop time */ 573 compat_time_t sem_ctime; /* last change time */ 574 u32 sem_base; /* ptr to first semaphore in array */ 575 u32 sem_pending; /* pending operations to be processed */ 576 u32 sem_pending_last; /* last pending operation */ 577 u32 undo; /* undo requests on this array */ 578 unsigned short sem_nsems; /* no. of semaphores in array */ 579 }; 580 581 struct semid64_ds32 { 582 struct ipc64_perm32 sem_perm; 583 compat_time_t sem_otime; 584 compat_time_t sem_ctime; 585 unsigned int sem_nsems; 586 unsigned int __unused1; 587 unsigned int __unused2; 588 }; 589 590 struct msqid_ds32 591 { 592 struct ipc_perm32 msg_perm; 593 u32 msg_first; 594 u32 msg_last; 595 compat_time_t msg_stime; 596 compat_time_t msg_rtime; 597 compat_time_t msg_ctime; 598 u32 wwait; 599 u32 rwait; 600 unsigned short msg_cbytes; 601 unsigned short msg_qnum; 602 unsigned short msg_qbytes; 603 compat_ipc_pid_t msg_lspid; 604 compat_ipc_pid_t msg_lrpid; 605 }; 606 607 struct msqid64_ds32 { 608 struct ipc64_perm32 msg_perm; 609 compat_time_t msg_stime; 610 unsigned int __unused1; 611 compat_time_t msg_rtime; 612 unsigned int __unused2; 613 compat_time_t msg_ctime; 614 unsigned int __unused3; 615 unsigned int msg_cbytes; 616 unsigned int msg_qnum; 617 unsigned int msg_qbytes; 618 compat_pid_t msg_lspid; 619 compat_pid_t msg_lrpid; 620 unsigned int __unused4; 621 unsigned int __unused5; 622 }; 623 624 struct shmid_ds32 { 625 struct ipc_perm32 shm_perm; 626 int shm_segsz; 627 compat_time_t shm_atime; 628 compat_time_t shm_dtime; 629 compat_time_t shm_ctime; 630 compat_ipc_pid_t shm_cpid; 631 compat_ipc_pid_t shm_lpid; 632 unsigned short shm_nattch; 633 }; 634 635 struct shmid64_ds32 { 636 struct ipc64_perm32 shm_perm; 637 compat_size_t shm_segsz; 638 compat_time_t shm_atime; 639 compat_time_t shm_dtime; 640 compat_time_t shm_ctime; 641 compat_pid_t shm_cpid; 642 compat_pid_t shm_lpid; 643 unsigned int shm_nattch; 644 unsigned int __unused1; 645 unsigned int __unused2; 646 }; 647 648 struct ipc_kludge32 { 649 u32 msgp; 650 s32 msgtyp; 651 }; 652 653 static int 654 do_sys32_semctl(int first, int second, int third, void *uptr) 655 { 656 union semun fourth; 657 u32 pad; 658 int err, err2; 659 struct semid64_ds s; 660 mm_segment_t old_fs; 661 662 if (!uptr) 663 return -EINVAL; 664 err = -EFAULT; 665 if (get_user (pad, (u32 *)uptr)) 666 return err; 667 if ((third & ~IPC_64) == SETVAL) 668 fourth.val = (int)pad; 669 else 670 fourth.__pad = (void *)A(pad); 671 switch (third & ~IPC_64) { 672 case IPC_INFO: 673 case IPC_RMID: 674 case IPC_SET: 675 case SEM_INFO: 676 case GETVAL: 677 case GETPID: 678 case GETNCNT: 679 case GETZCNT: 680 case GETALL: 681 case SETVAL: 682 case SETALL: 683 err = sys_semctl (first, second, third, fourth); 684 break; 685 686 case IPC_STAT: 687 case SEM_STAT: 688 fourth.__pad = &s; 689 old_fs = get_fs(); 690 set_fs(KERNEL_DS); 691 err = sys_semctl(first, second, third | IPC_64, fourth); 692 set_fs(old_fs); 693 694 if (third & IPC_64) { 695 struct semid64_ds32 *usp64 = (struct semid64_ds32 *) A(pad); 696 697 if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) { 698 err = -EFAULT; 699 break; 700 } 701 err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key); 702 err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid); 703 err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid); 704 err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid); 705 err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid); 706 err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode); 707 err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq); 708 err2 |= __put_user(s.sem_otime, &usp64->sem_otime); 709 err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime); 710 err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems); 711 } else { 712 struct semid_ds32 *usp32 = (struct semid_ds32 *) A(pad); 713 714 if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) { 715 err = -EFAULT; 716 break; 717 } 718 err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key); 719 err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid); 720 err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid); 721 err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid); 722 err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid); 723 err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode); 724 err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq); 725 err2 |= __put_user(s.sem_otime, &usp32->sem_otime); 726 err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime); 727 err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems); 728 } 729 if (err2) 730 err = -EFAULT; 731 break; 732 733 default: 734 err = - EINVAL; 735 break; 736 } 737 738 return err; 739 } 740 741 static int 742 do_sys32_msgsnd (int first, int second, int third, void *uptr) 743 { 744 struct msgbuf32 *up = (struct msgbuf32 *)uptr; 745 struct msgbuf *p; 746 mm_segment_t old_fs; 747 int err; 748 749 if (second < 0) 750 return -EINVAL; 751 p = kmalloc (second + sizeof (struct msgbuf) 752 + 4, GFP_USER); 753 if (!p) 754 return -ENOMEM; 755 err = get_user (p->mtype, &up->mtype); 756 if (err) 757 goto out; 758 err |= __copy_from_user (p->mtext, &up->mtext, second); 759 if (err) 760 goto out; 761 old_fs = get_fs (); 762 set_fs (KERNEL_DS); 763 err = sys_msgsnd (first, p, second, third); 764 set_fs (old_fs); 765 out: 766 kfree (p); 767 768 return err; 769 } 770 771 static int 772 do_sys32_msgrcv (int first, int second, int msgtyp, int third, 773 int version, void *uptr) 774 { 775 struct msgbuf32 *up; 776 struct msgbuf *p; 777 mm_segment_t old_fs; 778 int err; 779 780 if (!version) { 781 struct ipc_kludge32 *uipck = (struct ipc_kludge32 *)uptr; 782 struct ipc_kludge32 ipck; 783 784 err = -EINVAL; 785 if (!uptr) 786 goto out; 787 err = -EFAULT; 788 if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32))) 789 goto out; 790 uptr = (void *)AA(ipck.msgp); 791 msgtyp = ipck.msgtyp; 792 } 793 794 if (second < 0) 795 return -EINVAL; 796 err = -ENOMEM; 797 p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER); 798 if (!p) 799 goto out; 800 old_fs = get_fs (); 801 set_fs (KERNEL_DS); 802 err = sys_msgrcv (first, p, second + 4, msgtyp, third); 803 set_fs (old_fs); 804 if (err < 0) 805 goto free_then_out; 806 up = (struct msgbuf32 *)uptr; 807 if (put_user (p->mtype, &up->mtype) || 808 __copy_to_user (&up->mtext, p->mtext, err)) 809 err = -EFAULT; 810 free_then_out: 811 kfree (p); 812 out: 813 return err; 814 } 815 816 static int 817 do_sys32_msgctl (int first, int second, void *uptr) 818 { 819 int err = -EINVAL, err2; 820 struct msqid64_ds m; 821 struct msqid_ds32 *up32 = (struct msqid_ds32 *)uptr; 822 struct msqid64_ds32 *up64 = (struct msqid64_ds32 *)uptr; 823 mm_segment_t old_fs; 824 825 switch (second & ~IPC_64) { 826 case IPC_INFO: 827 case IPC_RMID: 828 case MSG_INFO: 829 err = sys_msgctl (first, second, (struct msqid_ds *)uptr); 830 break; 831 832 case IPC_SET: 833 if (second & IPC_64) { 834 if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) { 835 err = -EFAULT; 836 break; 837 } 838 err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid); 839 err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid); 840 err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode); 841 err |= __get_user(m.msg_qbytes, &up64->msg_qbytes); 842 } else { 843 if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) { 844 err = -EFAULT; 845 break; 846 } 847 err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid); 848 err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid); 849 err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode); 850 err |= __get_user(m.msg_qbytes, &up32->msg_qbytes); 851 } 852 if (err) 853 break; 854 old_fs = get_fs(); 855 set_fs(KERNEL_DS); 856 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds *)&m); 857 set_fs(old_fs); 858 break; 859 860 case IPC_STAT: 861 case MSG_STAT: 862 old_fs = get_fs(); 863 set_fs(KERNEL_DS); 864 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds *)&m); 865 set_fs(old_fs); 866 if (second & IPC_64) { 867 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) { 868 err = -EFAULT; 869 break; 870 } 871 err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key); 872 err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid); 873 err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid); 874 err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid); 875 err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid); 876 err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode); 877 err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq); 878 err2 |= __put_user(m.msg_stime, &up64->msg_stime); 879 err2 |= __put_user(m.msg_rtime, &up64->msg_rtime); 880 err2 |= __put_user(m.msg_ctime, &up64->msg_ctime); 881 err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes); 882 err2 |= __put_user(m.msg_qnum, &up64->msg_qnum); 883 err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes); 884 err2 |= __put_user(m.msg_lspid, &up64->msg_lspid); 885 err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid); 886 if (err2) 887 err = -EFAULT; 888 } else { 889 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) { 890 err = -EFAULT; 891 break; 892 } 893 err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key); 894 err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid); 895 err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid); 896 err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid); 897 err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid); 898 err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode); 899 err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq); 900 err2 |= __put_user(m.msg_stime, &up32->msg_stime); 901 err2 |= __put_user(m.msg_rtime, &up32->msg_rtime); 902 err2 |= __put_user(m.msg_ctime, &up32->msg_ctime); 903 err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes); 904 err2 |= __put_user(m.msg_qnum, &up32->msg_qnum); 905 err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes); 906 err2 |= __put_user(m.msg_lspid, &up32->msg_lspid); 907 err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid); 908 if (err2) 909 err = -EFAULT; 910 } 911 break; 912 } 913 914 return err; 915 } 916 917 static int 918 do_sys32_shmat (int first, int second, int third, int version, void *uptr) 919 { 920 unsigned long raddr; 921 u32 *uaddr = (u32 *)A((u32)third); 922 int err = -EINVAL; 923 924 if (version == 1) 925 return err; 926 err = do_shmat (first, uptr, second, &raddr); 927 if (err) 928 return err; 929 err = put_user (raddr, uaddr); 930 return err; 931 } 932 933 struct shm_info32 { 934 int used_ids; 935 u32 shm_tot, shm_rss, shm_swp; 936 u32 swap_attempts, swap_successes; 937 }; 938 939 static int 940 do_sys32_shmctl (int first, int second, void *uptr) 941 { 942 struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr; 943 struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr; 944 struct shm_info32 *uip = (struct shm_info32 *)uptr; 945 int err = -EFAULT, err2; 946 struct shmid64_ds s64; 947 mm_segment_t old_fs; 948 struct shm_info si; 949 struct shmid_ds s; 950 951 switch (second & ~IPC_64) { 952 case IPC_INFO: 953 second = IPC_INFO; /* So that we don't have to translate it */ 954 case IPC_RMID: 955 case SHM_LOCK: 956 case SHM_UNLOCK: 957 err = sys_shmctl(first, second, (struct shmid_ds *)uptr); 958 break; 959 case IPC_SET: 960 if (second & IPC_64) { 961 err = get_user(s.shm_perm.uid, &up64->shm_perm.uid); 962 err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid); 963 err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode); 964 } else { 965 err = get_user(s.shm_perm.uid, &up32->shm_perm.uid); 966 err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid); 967 err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode); 968 } 969 if (err) 970 break; 971 old_fs = get_fs(); 972 set_fs(KERNEL_DS); 973 err = sys_shmctl(first, second & ~IPC_64, &s); 974 set_fs(old_fs); 975 break; 976 977 case IPC_STAT: 978 case SHM_STAT: 979 old_fs = get_fs(); 980 set_fs(KERNEL_DS); 981 err = sys_shmctl(first, second | IPC_64, (void *) &s64); 982 set_fs(old_fs); 983 if (err < 0) 984 break; 985 if (second & IPC_64) { 986 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) { 987 err = -EFAULT; 988 break; 989 } 990 err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key); 991 err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid); 992 err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid); 993 err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid); 994 err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid); 995 err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode); 996 err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq); 997 err2 |= __put_user(s64.shm_atime, &up64->shm_atime); 998 err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime); 999 err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime); 1000 err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz); 1001 err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch); 1002 err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid); 1003 err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid); 1004 } else { 1005 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) { 1006 err = -EFAULT; 1007 break; 1008 } 1009 err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key); 1010 err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid); 1011 err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid); 1012 err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid); 1013 err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid); 1014 err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode); 1015 err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq); 1016 err2 |= __put_user(s64.shm_atime, &up32->shm_atime); 1017 err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime); 1018 err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime); 1019 err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz); 1020 err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch); 1021 err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid); 1022 err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid); 1023 } 1024 if (err2) 1025 err = -EFAULT; 1026 break; 1027 1028 case SHM_INFO: 1029 old_fs = get_fs(); 1030 set_fs(KERNEL_DS); 1031 err = sys_shmctl(first, second, (void *)&si); 1032 set_fs(old_fs); 1033 if (err < 0) 1034 break; 1035 err2 = put_user(si.used_ids, &uip->used_ids); 1036 err2 |= __put_user(si.shm_tot, &uip->shm_tot); 1037 err2 |= __put_user(si.shm_rss, &uip->shm_rss); 1038 err2 |= __put_user(si.shm_swp, &uip->shm_swp); 1039 err2 |= __put_user(si.swap_attempts, &uip->swap_attempts); 1040 err2 |= __put_user (si.swap_successes, &uip->swap_successes); 1041 if (err2) 1042 err = -EFAULT; 1043 break; 1044 1045 default: 1046 err = -EINVAL; 1047 break; 1048 } 1049 1050 return err; 1051 } 1052 1053 static int sys32_semtimedop(int semid, struct sembuf *tsems, int nsems, 1054 const struct compat_timespec *timeout32) 1055 { 1056 struct compat_timespec t32; 1057 struct timespec *t64 = compat_alloc_user_space(sizeof(*t64)); 1058 1059 if (copy_from_user(&t32, timeout32, sizeof(t32))) 1060 return -EFAULT; 1061 1062 if (put_user(t32.tv_sec, &t64->tv_sec) || 1063 put_user(t32.tv_nsec, &t64->tv_nsec)) 1064 return -EFAULT; 1065 1066 return sys_semtimedop(semid, tsems, nsems, t64); 1067 } 1068 1069 asmlinkage long 1070 sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth) 1071 { 1072 int version, err; 1073 1074 version = call >> 16; /* hack for backward compatibility */ 1075 call &= 0xffff; 1076 1077 switch (call) { 1078 case SEMOP: 1079 /* struct sembuf is the same on 32 and 64bit :)) */ 1080 err = sys_semtimedop (first, (struct sembuf *)AA(ptr), second, 1081 NULL); 1082 break; 1083 case SEMTIMEDOP: 1084 err = sys32_semtimedop (first, (struct sembuf *)AA(ptr), second, 1085 (const struct compat_timespec __user *)AA(fifth)); 1086 break; 1087 case SEMGET: 1088 err = sys_semget (first, second, third); 1089 break; 1090 case SEMCTL: 1091 err = do_sys32_semctl (first, second, third, 1092 (void *)AA(ptr)); 1093 break; 1094 1095 case MSGSND: 1096 err = do_sys32_msgsnd (first, second, third, 1097 (void *)AA(ptr)); 1098 break; 1099 case MSGRCV: 1100 err = do_sys32_msgrcv (first, second, fifth, third, 1101 version, (void *)AA(ptr)); 1102 break; 1103 case MSGGET: 1104 err = sys_msgget ((key_t) first, second); 1105 break; 1106 case MSGCTL: 1107 err = do_sys32_msgctl (first, second, (void *)AA(ptr)); 1108 break; 1109 1110 case SHMAT: 1111 err = do_sys32_shmat (first, second, third, 1112 version, (void *)AA(ptr)); 1113 break; 1114 case SHMDT: 1115 err = sys_shmdt ((char *)A(ptr)); 1116 break; 1117 case SHMGET: 1118 err = sys_shmget (first, (unsigned)second, third); 1119 break; 1120 case SHMCTL: 1121 err = do_sys32_shmctl (first, second, (void *)AA(ptr)); 1122 break; 1123 default: 1124 err = -EINVAL; 1125 break; 1126 } 1127 1128 return err; 1129 } 1130 1131 asmlinkage long sys32_shmat(int shmid, char __user *shmaddr, 1132 int shmflg, int32_t *addr) 1133 { 1134 unsigned long raddr; 1135 int err; 1136 1137 err = do_shmat(shmid, shmaddr, shmflg, &raddr); 1138 if (err) 1139 return err; 1140 1141 return put_user(raddr, addr); 1142 } 1143 1144 struct sysctl_args32 1145 { 1146 compat_caddr_t name; 1147 int nlen; 1148 compat_caddr_t oldval; 1149 compat_caddr_t oldlenp; 1150 compat_caddr_t newval; 1151 compat_size_t newlen; 1152 unsigned int __unused[4]; 1153 }; 1154 1155 #ifdef CONFIG_SYSCTL 1156 1157 asmlinkage long sys32_sysctl(struct sysctl_args32 *args) 1158 { 1159 struct sysctl_args32 tmp; 1160 int error; 1161 size_t oldlen, *oldlenp = NULL; 1162 unsigned long addr = (((long)&args->__unused[0]) + 7) & ~7; 1163 1164 if (copy_from_user(&tmp, args, sizeof(tmp))) 1165 return -EFAULT; 1166 1167 if (tmp.oldval && tmp.oldlenp) { 1168 /* Duh, this is ugly and might not work if sysctl_args 1169 is in read-only memory, but do_sysctl does indirectly 1170 a lot of uaccess in both directions and we'd have to 1171 basically copy the whole sysctl.c here, and 1172 glibc's __sysctl uses rw memory for the structure 1173 anyway. */ 1174 if (get_user(oldlen, (u32 *)A(tmp.oldlenp)) || 1175 put_user(oldlen, (size_t *)addr)) 1176 return -EFAULT; 1177 oldlenp = (size_t *)addr; 1178 } 1179 1180 lock_kernel(); 1181 error = do_sysctl((int *)A(tmp.name), tmp.nlen, (void *)A(tmp.oldval), 1182 oldlenp, (void *)A(tmp.newval), tmp.newlen); 1183 unlock_kernel(); 1184 if (oldlenp) { 1185 if (!error) { 1186 if (get_user(oldlen, (size_t *)addr) || 1187 put_user(oldlen, (u32 *)A(tmp.oldlenp))) 1188 error = -EFAULT; 1189 } 1190 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); 1191 } 1192 return error; 1193 } 1194 1195 #endif /* CONFIG_SYSCTL */ 1196 1197 asmlinkage long sys32_newuname(struct new_utsname * name) 1198 { 1199 int ret = 0; 1200 1201 down_read(&uts_sem); 1202 if (copy_to_user(name,&system_utsname,sizeof *name)) 1203 ret = -EFAULT; 1204 up_read(&uts_sem); 1205 1206 if (current->personality == PER_LINUX32 && !ret) 1207 if (copy_to_user(name->machine, "mips\0\0\0", 8)) 1208 ret = -EFAULT; 1209 1210 return ret; 1211 } 1212 1213 asmlinkage int sys32_personality(unsigned long personality) 1214 { 1215 int ret; 1216 if (current->personality == PER_LINUX32 && personality == PER_LINUX) 1217 personality = PER_LINUX32; 1218 ret = sys_personality(personality); 1219 if (ret == PER_LINUX32) 1220 ret = PER_LINUX; 1221 return ret; 1222 } 1223 1224 /* ustat compatibility */ 1225 struct ustat32 { 1226 compat_daddr_t f_tfree; 1227 compat_ino_t f_tinode; 1228 char f_fname[6]; 1229 char f_fpack[6]; 1230 }; 1231 1232 extern asmlinkage long sys_ustat(dev_t dev, struct ustat * ubuf); 1233 1234 asmlinkage int sys32_ustat(dev_t dev, struct ustat32 * ubuf32) 1235 { 1236 int err; 1237 struct ustat tmp; 1238 struct ustat32 tmp32; 1239 mm_segment_t old_fs = get_fs(); 1240 1241 set_fs(KERNEL_DS); 1242 err = sys_ustat(dev, &tmp); 1243 set_fs (old_fs); 1244 1245 if (err) 1246 goto out; 1247 1248 memset(&tmp32,0,sizeof(struct ustat32)); 1249 tmp32.f_tfree = tmp.f_tfree; 1250 tmp32.f_tinode = tmp.f_tinode; 1251 1252 err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0; 1253 1254 out: 1255 return err; 1256 } 1257 1258 /* Handle adjtimex compatibility. */ 1259 1260 struct timex32 { 1261 u32 modes; 1262 s32 offset, freq, maxerror, esterror; 1263 s32 status, constant, precision, tolerance; 1264 struct compat_timeval time; 1265 s32 tick; 1266 s32 ppsfreq, jitter, shift, stabil; 1267 s32 jitcnt, calcnt, errcnt, stbcnt; 1268 s32 :32; s32 :32; s32 :32; s32 :32; 1269 s32 :32; s32 :32; s32 :32; s32 :32; 1270 s32 :32; s32 :32; s32 :32; s32 :32; 1271 }; 1272 1273 extern int do_adjtimex(struct timex *); 1274 1275 asmlinkage int sys32_adjtimex(struct timex32 *utp) 1276 { 1277 struct timex txc; 1278 int ret; 1279 1280 memset(&txc, 0, sizeof(struct timex)); 1281 1282 if (get_user(txc.modes, &utp->modes) || 1283 __get_user(txc.offset, &utp->offset) || 1284 __get_user(txc.freq, &utp->freq) || 1285 __get_user(txc.maxerror, &utp->maxerror) || 1286 __get_user(txc.esterror, &utp->esterror) || 1287 __get_user(txc.status, &utp->status) || 1288 __get_user(txc.constant, &utp->constant) || 1289 __get_user(txc.precision, &utp->precision) || 1290 __get_user(txc.tolerance, &utp->tolerance) || 1291 __get_user(txc.time.tv_sec, &utp->time.tv_sec) || 1292 __get_user(txc.time.tv_usec, &utp->time.tv_usec) || 1293 __get_user(txc.tick, &utp->tick) || 1294 __get_user(txc.ppsfreq, &utp->ppsfreq) || 1295 __get_user(txc.jitter, &utp->jitter) || 1296 __get_user(txc.shift, &utp->shift) || 1297 __get_user(txc.stabil, &utp->stabil) || 1298 __get_user(txc.jitcnt, &utp->jitcnt) || 1299 __get_user(txc.calcnt, &utp->calcnt) || 1300 __get_user(txc.errcnt, &utp->errcnt) || 1301 __get_user(txc.stbcnt, &utp->stbcnt)) 1302 return -EFAULT; 1303 1304 ret = do_adjtimex(&txc); 1305 1306 if (put_user(txc.modes, &utp->modes) || 1307 __put_user(txc.offset, &utp->offset) || 1308 __put_user(txc.freq, &utp->freq) || 1309 __put_user(txc.maxerror, &utp->maxerror) || 1310 __put_user(txc.esterror, &utp->esterror) || 1311 __put_user(txc.status, &utp->status) || 1312 __put_user(txc.constant, &utp->constant) || 1313 __put_user(txc.precision, &utp->precision) || 1314 __put_user(txc.tolerance, &utp->tolerance) || 1315 __put_user(txc.time.tv_sec, &utp->time.tv_sec) || 1316 __put_user(txc.time.tv_usec, &utp->time.tv_usec) || 1317 __put_user(txc.tick, &utp->tick) || 1318 __put_user(txc.ppsfreq, &utp->ppsfreq) || 1319 __put_user(txc.jitter, &utp->jitter) || 1320 __put_user(txc.shift, &utp->shift) || 1321 __put_user(txc.stabil, &utp->stabil) || 1322 __put_user(txc.jitcnt, &utp->jitcnt) || 1323 __put_user(txc.calcnt, &utp->calcnt) || 1324 __put_user(txc.errcnt, &utp->errcnt) || 1325 __put_user(txc.stbcnt, &utp->stbcnt)) 1326 ret = -EFAULT; 1327 1328 return ret; 1329 } 1330 1331 asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t *offset, 1332 s32 count) 1333 { 1334 mm_segment_t old_fs = get_fs(); 1335 int ret; 1336 off_t of; 1337 1338 if (offset && get_user(of, offset)) 1339 return -EFAULT; 1340 1341 set_fs(KERNEL_DS); 1342 ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count); 1343 set_fs(old_fs); 1344 1345 if (offset && put_user(of, offset)) 1346 return -EFAULT; 1347 1348 return ret; 1349 } 1350 1351 asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3, 1352 size_t count) 1353 { 1354 return sys_readahead(fd, merge_64(a2, a3), count); 1355 } 1356 1357 /* Argument list sizes for sys_socketcall */ 1358 #define AL(x) ((x) * sizeof(unsigned int)) 1359 static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), 1360 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6), 1361 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)}; 1362 #undef AL 1363 1364 /* 1365 * System call vectors. 1366 * 1367 * Argument checking cleaned up. Saved 20% in size. 1368 * This function doesn't need to set the kernel lock because 1369 * it is set by the callees. 1370 */ 1371 1372 asmlinkage long sys32_socketcall(int call, unsigned int *args32) 1373 { 1374 unsigned int a[6]; 1375 unsigned int a0,a1; 1376 int err; 1377 1378 extern asmlinkage long sys_socket(int family, int type, int protocol); 1379 extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen); 1380 extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen); 1381 extern asmlinkage long sys_listen(int fd, int backlog); 1382 extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen); 1383 extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len); 1384 extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len); 1385 extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec); 1386 extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags); 1387 extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags, 1388 struct sockaddr __user *addr, int addr_len); 1389 extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags); 1390 extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags, 1391 struct sockaddr __user *addr, int __user *addr_len); 1392 extern asmlinkage long sys_shutdown(int fd, int how); 1393 extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen); 1394 extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int *optlen); 1395 extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags); 1396 extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags); 1397 1398 1399 if(call<1||call>SYS_RECVMSG) 1400 return -EINVAL; 1401 1402 /* copy_from_user should be SMP safe. */ 1403 if (copy_from_user(a, args32, socketcall_nargs[call])) 1404 return -EFAULT; 1405 1406 a0=a[0]; 1407 a1=a[1]; 1408 1409 switch(call) 1410 { 1411 case SYS_SOCKET: 1412 err = sys_socket(a0,a1,a[2]); 1413 break; 1414 case SYS_BIND: 1415 err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]); 1416 break; 1417 case SYS_CONNECT: 1418 err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]); 1419 break; 1420 case SYS_LISTEN: 1421 err = sys_listen(a0,a1); 1422 break; 1423 case SYS_ACCEPT: 1424 err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2])); 1425 break; 1426 case SYS_GETSOCKNAME: 1427 err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2])); 1428 break; 1429 case SYS_GETPEERNAME: 1430 err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2])); 1431 break; 1432 case SYS_SOCKETPAIR: 1433 err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3])); 1434 break; 1435 case SYS_SEND: 1436 err = sys_send(a0, (void __user *)A(a1), a[2], a[3]); 1437 break; 1438 case SYS_SENDTO: 1439 err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3], 1440 (struct sockaddr __user *)A(a[4]), a[5]); 1441 break; 1442 case SYS_RECV: 1443 err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]); 1444 break; 1445 case SYS_RECVFROM: 1446 err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3], 1447 (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5])); 1448 break; 1449 case SYS_SHUTDOWN: 1450 err = sys_shutdown(a0,a1); 1451 break; 1452 case SYS_SETSOCKOPT: 1453 err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]); 1454 break; 1455 case SYS_GETSOCKOPT: 1456 err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4])); 1457 break; 1458 case SYS_SENDMSG: 1459 err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]); 1460 break; 1461 case SYS_RECVMSG: 1462 err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]); 1463 break; 1464 default: 1465 err = -EINVAL; 1466 break; 1467 } 1468 return err; 1469 } 1470