1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * 32bit Socket syscall emulation. Based on arch/sparc64/kernel/sys_sparc32.c. 4 * 5 * Copyright (C) 2000 VA Linux Co 6 * Copyright (C) 2000 Don Dugger <n0ano@valinux.com> 7 * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com> 8 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) 9 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) 10 * Copyright (C) 2000 Hewlett-Packard Co. 11 * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com> 12 * Copyright (C) 2000,2001 Andi Kleen, SuSE Labs 13 */ 14 15 #include <linux/kernel.h> 16 #include <linux/gfp.h> 17 #include <linux/fs.h> 18 #include <linux/types.h> 19 #include <linux/file.h> 20 #include <linux/icmpv6.h> 21 #include <linux/socket.h> 22 #include <linux/syscalls.h> 23 #include <linux/filter.h> 24 #include <linux/compat.h> 25 #include <linux/security.h> 26 #include <linux/audit.h> 27 #include <linux/export.h> 28 29 #include <net/scm.h> 30 #include <net/sock.h> 31 #include <net/ip.h> 32 #include <net/ipv6.h> 33 #include <linux/uaccess.h> 34 #include <net/compat.h> 35 36 int __get_compat_msghdr(struct msghdr *kmsg, 37 struct compat_msghdr __user *umsg, 38 struct sockaddr __user **save_addr, 39 compat_uptr_t *ptr, compat_size_t *len) 40 { 41 struct compat_msghdr msg; 42 ssize_t err; 43 44 if (copy_from_user(&msg, umsg, sizeof(*umsg))) 45 return -EFAULT; 46 47 kmsg->msg_flags = msg.msg_flags; 48 kmsg->msg_namelen = msg.msg_namelen; 49 50 if (!msg.msg_name) 51 kmsg->msg_namelen = 0; 52 53 if (kmsg->msg_namelen < 0) 54 return -EINVAL; 55 56 if (kmsg->msg_namelen > sizeof(struct sockaddr_storage)) 57 kmsg->msg_namelen = sizeof(struct sockaddr_storage); 58 59 kmsg->msg_control_is_user = true; 60 kmsg->msg_control_user = compat_ptr(msg.msg_control); 61 kmsg->msg_controllen = msg.msg_controllen; 62 63 if (save_addr) 64 *save_addr = compat_ptr(msg.msg_name); 65 66 if (msg.msg_name && kmsg->msg_namelen) { 67 if (!save_addr) { 68 err = move_addr_to_kernel(compat_ptr(msg.msg_name), 69 kmsg->msg_namelen, 70 kmsg->msg_name); 71 if (err < 0) 72 return err; 73 } 74 } else { 75 kmsg->msg_name = NULL; 76 kmsg->msg_namelen = 0; 77 } 78 79 if (msg.msg_iovlen > UIO_MAXIOV) 80 return -EMSGSIZE; 81 82 kmsg->msg_iocb = NULL; 83 *ptr = msg.msg_iov; 84 *len = msg.msg_iovlen; 85 return 0; 86 } 87 88 int get_compat_msghdr(struct msghdr *kmsg, 89 struct compat_msghdr __user *umsg, 90 struct sockaddr __user **save_addr, 91 struct iovec **iov) 92 { 93 compat_uptr_t ptr; 94 compat_size_t len; 95 ssize_t err; 96 97 err = __get_compat_msghdr(kmsg, umsg, save_addr, &ptr, &len); 98 if (err) 99 return err; 100 101 err = compat_import_iovec(save_addr ? READ : WRITE, compat_ptr(ptr), 102 len, UIO_FASTIOV, iov, &kmsg->msg_iter); 103 return err < 0 ? err : 0; 104 } 105 106 /* Bleech... */ 107 #define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32)) 108 109 #define CMSG_COMPAT_DATA(cmsg) \ 110 ((void __user *)((char __user *)(cmsg) + sizeof(struct compat_cmsghdr))) 111 #define CMSG_COMPAT_SPACE(len) \ 112 (sizeof(struct compat_cmsghdr) + CMSG_COMPAT_ALIGN(len)) 113 #define CMSG_COMPAT_LEN(len) \ 114 (sizeof(struct compat_cmsghdr) + (len)) 115 116 #define CMSG_COMPAT_FIRSTHDR(msg) \ 117 (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \ 118 (struct compat_cmsghdr __user *)((msg)->msg_control) : \ 119 (struct compat_cmsghdr __user *)NULL) 120 121 #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \ 122 ((ucmlen) >= sizeof(struct compat_cmsghdr) && \ 123 (ucmlen) <= (unsigned long) \ 124 ((mhdr)->msg_controllen - \ 125 ((char __user *)(ucmsg) - (char __user *)(mhdr)->msg_control_user))) 126 127 static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg, 128 struct compat_cmsghdr __user *cmsg, int cmsg_len) 129 { 130 char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len); 131 if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) > 132 msg->msg_controllen) 133 return NULL; 134 return (struct compat_cmsghdr __user *)ptr; 135 } 136 137 /* There is a lot of hair here because the alignment rules (and 138 * thus placement) of cmsg headers and length are different for 139 * 32-bit apps. -DaveM 140 */ 141 int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk, 142 unsigned char *stackbuf, int stackbuf_size) 143 { 144 struct compat_cmsghdr __user *ucmsg; 145 struct cmsghdr *kcmsg, *kcmsg_base; 146 compat_size_t ucmlen; 147 __kernel_size_t kcmlen, tmp; 148 int err = -EFAULT; 149 150 BUILD_BUG_ON(sizeof(struct compat_cmsghdr) != 151 CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr))); 152 153 kcmlen = 0; 154 kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf; 155 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); 156 while (ucmsg != NULL) { 157 if (get_user(ucmlen, &ucmsg->cmsg_len)) 158 return -EFAULT; 159 160 /* Catch bogons. */ 161 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg)) 162 return -EINVAL; 163 164 tmp = ((ucmlen - sizeof(*ucmsg)) + sizeof(struct cmsghdr)); 165 tmp = CMSG_ALIGN(tmp); 166 kcmlen += tmp; 167 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen); 168 } 169 if (kcmlen == 0) 170 return -EINVAL; 171 172 /* The kcmlen holds the 64-bit version of the control length. 173 * It may not be modified as we do not stick it into the kmsg 174 * until we have successfully copied over all of the data 175 * from the user. 176 */ 177 if (kcmlen > stackbuf_size) 178 kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL); 179 if (kcmsg == NULL) 180 return -ENOBUFS; 181 182 /* Now copy them over neatly. */ 183 memset(kcmsg, 0, kcmlen); 184 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); 185 while (ucmsg != NULL) { 186 struct compat_cmsghdr cmsg; 187 if (copy_from_user(&cmsg, ucmsg, sizeof(cmsg))) 188 goto Efault; 189 if (!CMSG_COMPAT_OK(cmsg.cmsg_len, ucmsg, kmsg)) 190 goto Einval; 191 tmp = ((cmsg.cmsg_len - sizeof(*ucmsg)) + sizeof(struct cmsghdr)); 192 if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp)) 193 goto Einval; 194 kcmsg->cmsg_len = tmp; 195 kcmsg->cmsg_level = cmsg.cmsg_level; 196 kcmsg->cmsg_type = cmsg.cmsg_type; 197 tmp = CMSG_ALIGN(tmp); 198 if (copy_from_user(CMSG_DATA(kcmsg), 199 CMSG_COMPAT_DATA(ucmsg), 200 (cmsg.cmsg_len - sizeof(*ucmsg)))) 201 goto Efault; 202 203 /* Advance. */ 204 kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp); 205 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, cmsg.cmsg_len); 206 } 207 208 /* 209 * check the length of messages copied in is the same as the 210 * what we get from the first loop 211 */ 212 if ((char *)kcmsg - (char *)kcmsg_base != kcmlen) 213 goto Einval; 214 215 /* Ok, looks like we made it. Hook it up and return success. */ 216 kmsg->msg_control = kcmsg_base; 217 kmsg->msg_controllen = kcmlen; 218 return 0; 219 220 Einval: 221 err = -EINVAL; 222 Efault: 223 if (kcmsg_base != (struct cmsghdr *)stackbuf) 224 sock_kfree_s(sk, kcmsg_base, kcmlen); 225 return err; 226 } 227 228 int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data) 229 { 230 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; 231 struct compat_cmsghdr cmhdr; 232 struct old_timeval32 ctv; 233 struct old_timespec32 cts[3]; 234 int cmlen; 235 236 if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) { 237 kmsg->msg_flags |= MSG_CTRUNC; 238 return 0; /* XXX: return error? check spec. */ 239 } 240 241 if (!COMPAT_USE_64BIT_TIME) { 242 if (level == SOL_SOCKET && type == SO_TIMESTAMP_OLD) { 243 struct __kernel_old_timeval *tv = (struct __kernel_old_timeval *)data; 244 ctv.tv_sec = tv->tv_sec; 245 ctv.tv_usec = tv->tv_usec; 246 data = &ctv; 247 len = sizeof(ctv); 248 } 249 if (level == SOL_SOCKET && 250 (type == SO_TIMESTAMPNS_OLD || type == SO_TIMESTAMPING_OLD)) { 251 int count = type == SO_TIMESTAMPNS_OLD ? 1 : 3; 252 int i; 253 struct __kernel_old_timespec *ts = data; 254 for (i = 0; i < count; i++) { 255 cts[i].tv_sec = ts[i].tv_sec; 256 cts[i].tv_nsec = ts[i].tv_nsec; 257 } 258 data = &cts; 259 len = sizeof(cts[0]) * count; 260 } 261 } 262 263 cmlen = CMSG_COMPAT_LEN(len); 264 if (kmsg->msg_controllen < cmlen) { 265 kmsg->msg_flags |= MSG_CTRUNC; 266 cmlen = kmsg->msg_controllen; 267 } 268 cmhdr.cmsg_level = level; 269 cmhdr.cmsg_type = type; 270 cmhdr.cmsg_len = cmlen; 271 272 if (copy_to_user(cm, &cmhdr, sizeof cmhdr)) 273 return -EFAULT; 274 if (copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr))) 275 return -EFAULT; 276 cmlen = CMSG_COMPAT_SPACE(len); 277 if (kmsg->msg_controllen < cmlen) 278 cmlen = kmsg->msg_controllen; 279 kmsg->msg_control += cmlen; 280 kmsg->msg_controllen -= cmlen; 281 return 0; 282 } 283 284 void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm) 285 { 286 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; 287 int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int); 288 int fdnum = scm->fp->count; 289 struct file **fp = scm->fp->fp; 290 int __user *cmfptr; 291 int err = 0, i; 292 293 if (fdnum < fdmax) 294 fdmax = fdnum; 295 296 for (i = 0, cmfptr = (int __user *) CMSG_COMPAT_DATA(cm); i < fdmax; i++, cmfptr++) { 297 int new_fd; 298 err = security_file_receive(fp[i]); 299 if (err) 300 break; 301 err = get_unused_fd_flags(MSG_CMSG_CLOEXEC & kmsg->msg_flags 302 ? O_CLOEXEC : 0); 303 if (err < 0) 304 break; 305 new_fd = err; 306 err = put_user(new_fd, cmfptr); 307 if (err) { 308 put_unused_fd(new_fd); 309 break; 310 } 311 /* Bump the usage count and install the file. */ 312 fd_install(new_fd, get_file(fp[i])); 313 } 314 315 if (i > 0) { 316 int cmlen = CMSG_COMPAT_LEN(i * sizeof(int)); 317 err = put_user(SOL_SOCKET, &cm->cmsg_level); 318 if (!err) 319 err = put_user(SCM_RIGHTS, &cm->cmsg_type); 320 if (!err) 321 err = put_user(cmlen, &cm->cmsg_len); 322 if (!err) { 323 cmlen = CMSG_COMPAT_SPACE(i * sizeof(int)); 324 kmsg->msg_control += cmlen; 325 kmsg->msg_controllen -= cmlen; 326 } 327 } 328 if (i < fdnum) 329 kmsg->msg_flags |= MSG_CTRUNC; 330 331 /* 332 * All of the files that fit in the message have had their 333 * usage counts incremented, so we just free the list. 334 */ 335 __scm_destroy(scm); 336 } 337 338 /* allocate a 64-bit sock_fprog on the user stack for duration of syscall. */ 339 struct sock_fprog __user *get_compat_bpf_fprog(char __user *optval) 340 { 341 struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval; 342 struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog)); 343 struct compat_sock_fprog f32; 344 struct sock_fprog f; 345 346 if (copy_from_user(&f32, fprog32, sizeof(*fprog32))) 347 return NULL; 348 memset(&f, 0, sizeof(f)); 349 f.len = f32.len; 350 f.filter = compat_ptr(f32.filter); 351 if (copy_to_user(kfprog, &f, sizeof(struct sock_fprog))) 352 return NULL; 353 354 return kfprog; 355 } 356 EXPORT_SYMBOL_GPL(get_compat_bpf_fprog); 357 358 static int do_set_attach_filter(struct socket *sock, int level, int optname, 359 char __user *optval, unsigned int optlen) 360 { 361 struct sock_fprog __user *kfprog; 362 363 kfprog = get_compat_bpf_fprog(optval); 364 if (!kfprog) 365 return -EFAULT; 366 367 return sock_setsockopt(sock, level, optname, (char __user *)kfprog, 368 sizeof(struct sock_fprog)); 369 } 370 371 static int compat_sock_setsockopt(struct socket *sock, int level, int optname, 372 char __user *optval, unsigned int optlen) 373 { 374 if (optname == SO_ATTACH_FILTER || 375 optname == SO_ATTACH_REUSEPORT_CBPF) 376 return do_set_attach_filter(sock, level, optname, 377 optval, optlen); 378 return sock_setsockopt(sock, level, optname, optval, optlen); 379 } 380 381 static int __compat_sys_setsockopt(int fd, int level, int optname, 382 char __user *optval, unsigned int optlen) 383 { 384 int err; 385 struct socket *sock; 386 387 if (optlen > INT_MAX) 388 return -EINVAL; 389 390 sock = sockfd_lookup(fd, &err); 391 if (sock) { 392 err = security_socket_setsockopt(sock, level, optname); 393 if (err) { 394 sockfd_put(sock); 395 return err; 396 } 397 398 if (level == SOL_SOCKET) 399 err = compat_sock_setsockopt(sock, level, 400 optname, optval, optlen); 401 else if (sock->ops->compat_setsockopt) 402 err = sock->ops->compat_setsockopt(sock, level, 403 optname, optval, optlen); 404 else 405 err = sock->ops->setsockopt(sock, level, 406 optname, optval, optlen); 407 sockfd_put(sock); 408 } 409 return err; 410 } 411 412 COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname, 413 char __user *, optval, unsigned int, optlen) 414 { 415 return __compat_sys_setsockopt(fd, level, optname, optval, optlen); 416 } 417 418 static int __compat_sys_getsockopt(int fd, int level, int optname, 419 char __user *optval, 420 int __user *optlen) 421 { 422 int err; 423 struct socket *sock = sockfd_lookup(fd, &err); 424 425 if (sock) { 426 err = security_socket_getsockopt(sock, level, optname); 427 if (err) { 428 sockfd_put(sock); 429 return err; 430 } 431 432 if (level == SOL_SOCKET) 433 err = sock_getsockopt(sock, level, 434 optname, optval, optlen); 435 else if (sock->ops->compat_getsockopt) 436 err = sock->ops->compat_getsockopt(sock, level, 437 optname, optval, optlen); 438 else 439 err = sock->ops->getsockopt(sock, level, 440 optname, optval, optlen); 441 sockfd_put(sock); 442 } 443 return err; 444 } 445 446 COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname, 447 char __user *, optval, int __user *, optlen) 448 { 449 return __compat_sys_getsockopt(fd, level, optname, optval, optlen); 450 } 451 452 /* Argument list sizes for compat_sys_socketcall */ 453 #define AL(x) ((x) * sizeof(u32)) 454 static unsigned char nas[21] = { 455 AL(0), AL(3), AL(3), AL(3), AL(2), AL(3), 456 AL(3), AL(3), AL(4), AL(4), AL(4), AL(6), 457 AL(6), AL(2), AL(5), AL(5), AL(3), AL(3), 458 AL(4), AL(5), AL(4) 459 }; 460 #undef AL 461 462 static inline long __compat_sys_sendmsg(int fd, 463 struct compat_msghdr __user *msg, 464 unsigned int flags) 465 { 466 return __sys_sendmsg(fd, (struct user_msghdr __user *)msg, 467 flags | MSG_CMSG_COMPAT, false); 468 } 469 470 COMPAT_SYSCALL_DEFINE3(sendmsg, int, fd, struct compat_msghdr __user *, msg, 471 unsigned int, flags) 472 { 473 return __compat_sys_sendmsg(fd, msg, flags); 474 } 475 476 static inline long __compat_sys_sendmmsg(int fd, 477 struct compat_mmsghdr __user *mmsg, 478 unsigned int vlen, unsigned int flags) 479 { 480 return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, 481 flags | MSG_CMSG_COMPAT, false); 482 } 483 484 COMPAT_SYSCALL_DEFINE4(sendmmsg, int, fd, struct compat_mmsghdr __user *, mmsg, 485 unsigned int, vlen, unsigned int, flags) 486 { 487 return __compat_sys_sendmmsg(fd, mmsg, vlen, flags); 488 } 489 490 static inline long __compat_sys_recvmsg(int fd, 491 struct compat_msghdr __user *msg, 492 unsigned int flags) 493 { 494 return __sys_recvmsg(fd, (struct user_msghdr __user *)msg, 495 flags | MSG_CMSG_COMPAT, false); 496 } 497 498 COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg, 499 unsigned int, flags) 500 { 501 return __compat_sys_recvmsg(fd, msg, flags); 502 } 503 504 static inline long __compat_sys_recvfrom(int fd, void __user *buf, 505 compat_size_t len, unsigned int flags, 506 struct sockaddr __user *addr, 507 int __user *addrlen) 508 { 509 return __sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr, 510 addrlen); 511 } 512 513 COMPAT_SYSCALL_DEFINE4(recv, int, fd, void __user *, buf, compat_size_t, len, unsigned int, flags) 514 { 515 return __compat_sys_recvfrom(fd, buf, len, flags, NULL, NULL); 516 } 517 518 COMPAT_SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, buf, compat_size_t, len, 519 unsigned int, flags, struct sockaddr __user *, addr, 520 int __user *, addrlen) 521 { 522 return __compat_sys_recvfrom(fd, buf, len, flags, addr, addrlen); 523 } 524 525 COMPAT_SYSCALL_DEFINE5(recvmmsg_time64, int, fd, struct compat_mmsghdr __user *, mmsg, 526 unsigned int, vlen, unsigned int, flags, 527 struct __kernel_timespec __user *, timeout) 528 { 529 return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, 530 flags | MSG_CMSG_COMPAT, timeout, NULL); 531 } 532 533 #ifdef CONFIG_COMPAT_32BIT_TIME 534 COMPAT_SYSCALL_DEFINE5(recvmmsg_time32, int, fd, struct compat_mmsghdr __user *, mmsg, 535 unsigned int, vlen, unsigned int, flags, 536 struct old_timespec32 __user *, timeout) 537 { 538 return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, 539 flags | MSG_CMSG_COMPAT, NULL, timeout); 540 } 541 #endif 542 543 COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args) 544 { 545 u32 a[AUDITSC_ARGS]; 546 unsigned int len; 547 u32 a0, a1; 548 int ret; 549 550 if (call < SYS_SOCKET || call > SYS_SENDMMSG) 551 return -EINVAL; 552 len = nas[call]; 553 if (len > sizeof(a)) 554 return -EINVAL; 555 556 if (copy_from_user(a, args, len)) 557 return -EFAULT; 558 559 ret = audit_socketcall_compat(len / sizeof(a[0]), a); 560 if (ret) 561 return ret; 562 563 a0 = a[0]; 564 a1 = a[1]; 565 566 switch (call) { 567 case SYS_SOCKET: 568 ret = __sys_socket(a0, a1, a[2]); 569 break; 570 case SYS_BIND: 571 ret = __sys_bind(a0, compat_ptr(a1), a[2]); 572 break; 573 case SYS_CONNECT: 574 ret = __sys_connect(a0, compat_ptr(a1), a[2]); 575 break; 576 case SYS_LISTEN: 577 ret = __sys_listen(a0, a1); 578 break; 579 case SYS_ACCEPT: 580 ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0); 581 break; 582 case SYS_GETSOCKNAME: 583 ret = __sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2])); 584 break; 585 case SYS_GETPEERNAME: 586 ret = __sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2])); 587 break; 588 case SYS_SOCKETPAIR: 589 ret = __sys_socketpair(a0, a1, a[2], compat_ptr(a[3])); 590 break; 591 case SYS_SEND: 592 ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3], NULL, 0); 593 break; 594 case SYS_SENDTO: 595 ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3], 596 compat_ptr(a[4]), a[5]); 597 break; 598 case SYS_RECV: 599 ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], 600 NULL, NULL); 601 break; 602 case SYS_RECVFROM: 603 ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], 604 compat_ptr(a[4]), 605 compat_ptr(a[5])); 606 break; 607 case SYS_SHUTDOWN: 608 ret = __sys_shutdown(a0, a1); 609 break; 610 case SYS_SETSOCKOPT: 611 ret = __compat_sys_setsockopt(a0, a1, a[2], 612 compat_ptr(a[3]), a[4]); 613 break; 614 case SYS_GETSOCKOPT: 615 ret = __compat_sys_getsockopt(a0, a1, a[2], 616 compat_ptr(a[3]), 617 compat_ptr(a[4])); 618 break; 619 case SYS_SENDMSG: 620 ret = __compat_sys_sendmsg(a0, compat_ptr(a1), a[2]); 621 break; 622 case SYS_SENDMMSG: 623 ret = __compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]); 624 break; 625 case SYS_RECVMSG: 626 ret = __compat_sys_recvmsg(a0, compat_ptr(a1), a[2]); 627 break; 628 case SYS_RECVMMSG: 629 ret = __sys_recvmmsg(a0, compat_ptr(a1), a[2], 630 a[3] | MSG_CMSG_COMPAT, NULL, 631 compat_ptr(a[4])); 632 break; 633 case SYS_ACCEPT4: 634 ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]); 635 break; 636 default: 637 ret = -EINVAL; 638 break; 639 } 640 return ret; 641 } 642