1 // SPDX-License-Identifier: GPL-2.0-only
3 * 32bit Socket syscall emulation. Based on arch/sparc64/kernel/sys_sparc32.c.
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
15 #include <linux/kernel.h>
16 #include <linux/gfp.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>
33 #include <linux/uaccess.h>
34 #include <net/compat.h>
36 int get_compat_msghdr(struct msghdr *kmsg,
37 struct compat_msghdr __user *umsg,
38 struct sockaddr __user **save_addr,
41 struct compat_msghdr msg;
44 if (copy_from_user(&msg, umsg, sizeof(*umsg)))
47 kmsg->msg_flags = msg.msg_flags;
48 kmsg->msg_namelen = msg.msg_namelen;
51 kmsg->msg_namelen = 0;
53 if (kmsg->msg_namelen < 0)
56 if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))
57 kmsg->msg_namelen = sizeof(struct sockaddr_storage);
59 kmsg->msg_control = compat_ptr(msg.msg_control);
60 kmsg->msg_controllen = msg.msg_controllen;
63 *save_addr = compat_ptr(msg.msg_name);
65 if (msg.msg_name && kmsg->msg_namelen) {
67 err = move_addr_to_kernel(compat_ptr(msg.msg_name),
74 kmsg->msg_name = NULL;
75 kmsg->msg_namelen = 0;
78 if (msg.msg_iovlen > UIO_MAXIOV)
81 kmsg->msg_iocb = NULL;
83 err = compat_import_iovec(save_addr ? READ : WRITE,
84 compat_ptr(msg.msg_iov), msg.msg_iovlen,
85 UIO_FASTIOV, iov, &kmsg->msg_iter);
86 return err < 0 ? err : 0;
90 #define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32))
92 #define CMSG_COMPAT_DATA(cmsg) \
93 ((void __user *)((char __user *)(cmsg) + sizeof(struct compat_cmsghdr)))
94 #define CMSG_COMPAT_SPACE(len) \
95 (sizeof(struct compat_cmsghdr) + CMSG_COMPAT_ALIGN(len))
96 #define CMSG_COMPAT_LEN(len) \
97 (sizeof(struct compat_cmsghdr) + (len))
99 #define CMSG_COMPAT_FIRSTHDR(msg) \
100 (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \
101 (struct compat_cmsghdr __user *)((msg)->msg_control) : \
102 (struct compat_cmsghdr __user *)NULL)
104 #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \
105 ((ucmlen) >= sizeof(struct compat_cmsghdr) && \
106 (ucmlen) <= (unsigned long) \
107 ((mhdr)->msg_controllen - \
108 ((char *)(ucmsg) - (char *)(mhdr)->msg_control)))
110 static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg,
111 struct compat_cmsghdr __user *cmsg, int cmsg_len)
113 char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len);
114 if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) >
117 return (struct compat_cmsghdr __user *)ptr;
120 /* There is a lot of hair here because the alignment rules (and
121 * thus placement) of cmsg headers and length are different for
122 * 32-bit apps. -DaveM
124 int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk,
125 unsigned char *stackbuf, int stackbuf_size)
127 struct compat_cmsghdr __user *ucmsg;
128 struct cmsghdr *kcmsg, *kcmsg_base;
129 compat_size_t ucmlen;
130 __kernel_size_t kcmlen, tmp;
133 BUILD_BUG_ON(sizeof(struct compat_cmsghdr) !=
134 CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)));
137 kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;
138 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
139 while (ucmsg != NULL) {
140 if (get_user(ucmlen, &ucmsg->cmsg_len))
144 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
147 tmp = ((ucmlen - sizeof(*ucmsg)) + sizeof(struct cmsghdr));
148 tmp = CMSG_ALIGN(tmp);
150 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
155 /* The kcmlen holds the 64-bit version of the control length.
156 * It may not be modified as we do not stick it into the kmsg
157 * until we have successfully copied over all of the data
160 if (kcmlen > stackbuf_size)
161 kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL);
165 /* Now copy them over neatly. */
166 memset(kcmsg, 0, kcmlen);
167 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
168 while (ucmsg != NULL) {
169 if (__get_user(ucmlen, &ucmsg->cmsg_len))
171 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
173 tmp = ((ucmlen - sizeof(*ucmsg)) + sizeof(struct cmsghdr));
174 if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp))
176 kcmsg->cmsg_len = tmp;
177 tmp = CMSG_ALIGN(tmp);
178 if (__get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level) ||
179 __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type) ||
180 copy_from_user(CMSG_DATA(kcmsg),
181 CMSG_COMPAT_DATA(ucmsg),
182 (ucmlen - sizeof(*ucmsg))))
186 kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp);
187 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
191 * check the length of messages copied in is the same as the
192 * what we get from the first loop
194 if ((char *)kcmsg - (char *)kcmsg_base != kcmlen)
197 /* Ok, looks like we made it. Hook it up and return success. */
198 kmsg->msg_control = kcmsg_base;
199 kmsg->msg_controllen = kcmlen;
205 if (kcmsg_base != (struct cmsghdr *)stackbuf)
206 sock_kfree_s(sk, kcmsg_base, kcmlen);
210 int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
212 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
213 struct compat_cmsghdr cmhdr;
214 struct old_timeval32 ctv;
215 struct old_timespec32 cts[3];
218 if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
219 kmsg->msg_flags |= MSG_CTRUNC;
220 return 0; /* XXX: return error? check spec. */
223 if (!COMPAT_USE_64BIT_TIME) {
224 if (level == SOL_SOCKET && type == SO_TIMESTAMP_OLD) {
225 struct __kernel_old_timeval *tv = (struct __kernel_old_timeval *)data;
226 ctv.tv_sec = tv->tv_sec;
227 ctv.tv_usec = tv->tv_usec;
231 if (level == SOL_SOCKET &&
232 (type == SO_TIMESTAMPNS_OLD || type == SO_TIMESTAMPING_OLD)) {
233 int count = type == SO_TIMESTAMPNS_OLD ? 1 : 3;
235 struct timespec *ts = (struct timespec *)data;
236 for (i = 0; i < count; i++) {
237 cts[i].tv_sec = ts[i].tv_sec;
238 cts[i].tv_nsec = ts[i].tv_nsec;
241 len = sizeof(cts[0]) * count;
245 cmlen = CMSG_COMPAT_LEN(len);
246 if (kmsg->msg_controllen < cmlen) {
247 kmsg->msg_flags |= MSG_CTRUNC;
248 cmlen = kmsg->msg_controllen;
250 cmhdr.cmsg_level = level;
251 cmhdr.cmsg_type = type;
252 cmhdr.cmsg_len = cmlen;
254 if (copy_to_user(cm, &cmhdr, sizeof cmhdr))
256 if (copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr)))
258 cmlen = CMSG_COMPAT_SPACE(len);
259 if (kmsg->msg_controllen < cmlen)
260 cmlen = kmsg->msg_controllen;
261 kmsg->msg_control += cmlen;
262 kmsg->msg_controllen -= cmlen;
266 void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
268 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
269 int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int);
270 int fdnum = scm->fp->count;
271 struct file **fp = scm->fp->fp;
278 for (i = 0, cmfptr = (int __user *) CMSG_COMPAT_DATA(cm); i < fdmax; i++, cmfptr++) {
280 err = security_file_receive(fp[i]);
283 err = get_unused_fd_flags(MSG_CMSG_CLOEXEC & kmsg->msg_flags
288 err = put_user(new_fd, cmfptr);
290 put_unused_fd(new_fd);
293 /* Bump the usage count and install the file. */
294 fd_install(new_fd, get_file(fp[i]));
298 int cmlen = CMSG_COMPAT_LEN(i * sizeof(int));
299 err = put_user(SOL_SOCKET, &cm->cmsg_level);
301 err = put_user(SCM_RIGHTS, &cm->cmsg_type);
303 err = put_user(cmlen, &cm->cmsg_len);
305 cmlen = CMSG_COMPAT_SPACE(i * sizeof(int));
306 kmsg->msg_control += cmlen;
307 kmsg->msg_controllen -= cmlen;
311 kmsg->msg_flags |= MSG_CTRUNC;
314 * All of the files that fit in the message have had their
315 * usage counts incremented, so we just free the list.
320 /* allocate a 64-bit sock_fprog on the user stack for duration of syscall. */
321 struct sock_fprog __user *get_compat_bpf_fprog(char __user *optval)
323 struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval;
324 struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog));
325 struct compat_sock_fprog f32;
328 if (copy_from_user(&f32, fprog32, sizeof(*fprog32)))
330 memset(&f, 0, sizeof(f));
332 f.filter = compat_ptr(f32.filter);
333 if (copy_to_user(kfprog, &f, sizeof(struct sock_fprog)))
338 EXPORT_SYMBOL_GPL(get_compat_bpf_fprog);
340 static int do_set_attach_filter(struct socket *sock, int level, int optname,
341 char __user *optval, unsigned int optlen)
343 struct sock_fprog __user *kfprog;
345 kfprog = get_compat_bpf_fprog(optval);
349 return sock_setsockopt(sock, level, optname, (char __user *)kfprog,
350 sizeof(struct sock_fprog));
353 static int compat_sock_setsockopt(struct socket *sock, int level, int optname,
354 char __user *optval, unsigned int optlen)
356 if (optname == SO_ATTACH_FILTER ||
357 optname == SO_ATTACH_REUSEPORT_CBPF)
358 return do_set_attach_filter(sock, level, optname,
360 return sock_setsockopt(sock, level, optname, optval, optlen);
363 static int __compat_sys_setsockopt(int fd, int level, int optname,
364 char __user *optval, unsigned int optlen)
369 if (optlen > INT_MAX)
372 sock = sockfd_lookup(fd, &err);
374 err = security_socket_setsockopt(sock, level, optname);
380 if (level == SOL_SOCKET)
381 err = compat_sock_setsockopt(sock, level,
382 optname, optval, optlen);
383 else if (sock->ops->compat_setsockopt)
384 err = sock->ops->compat_setsockopt(sock, level,
385 optname, optval, optlen);
387 err = sock->ops->setsockopt(sock, level,
388 optname, optval, optlen);
394 COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname,
395 char __user *, optval, unsigned int, optlen)
397 return __compat_sys_setsockopt(fd, level, optname, optval, optlen);
400 static int __compat_sys_getsockopt(int fd, int level, int optname,
405 struct socket *sock = sockfd_lookup(fd, &err);
408 err = security_socket_getsockopt(sock, level, optname);
414 if (level == SOL_SOCKET)
415 err = sock_getsockopt(sock, level,
416 optname, optval, optlen);
417 else if (sock->ops->compat_getsockopt)
418 err = sock->ops->compat_getsockopt(sock, level,
419 optname, optval, optlen);
421 err = sock->ops->getsockopt(sock, level,
422 optname, optval, optlen);
428 COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname,
429 char __user *, optval, int __user *, optlen)
431 return __compat_sys_getsockopt(fd, level, optname, optval, optlen);
434 struct compat_group_req {
436 struct __kernel_sockaddr_storage gr_group
440 struct compat_group_source_req {
442 struct __kernel_sockaddr_storage gsr_group
444 struct __kernel_sockaddr_storage gsr_source
448 struct compat_group_filter {
450 struct __kernel_sockaddr_storage gf_group
454 struct __kernel_sockaddr_storage gf_slist[1]
458 #define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \
459 sizeof(struct __kernel_sockaddr_storage))
462 int compat_mc_setsockopt(struct sock *sock, int level, int optname,
463 char __user *optval, unsigned int optlen,
464 int (*setsockopt)(struct sock *, int, int, char __user *, unsigned int))
466 char __user *koptval = optval;
467 int koptlen = optlen;
470 case MCAST_JOIN_GROUP:
471 case MCAST_LEAVE_GROUP:
473 struct compat_group_req __user *gr32 = (void __user *)optval;
474 struct group_req __user *kgr =
475 compat_alloc_user_space(sizeof(struct group_req));
478 if (!access_ok(gr32, sizeof(*gr32)) ||
479 !access_ok(kgr, sizeof(struct group_req)) ||
480 __get_user(interface, &gr32->gr_interface) ||
481 __put_user(interface, &kgr->gr_interface) ||
482 copy_in_user(&kgr->gr_group, &gr32->gr_group,
483 sizeof(kgr->gr_group)))
485 koptval = (char __user *)kgr;
486 koptlen = sizeof(struct group_req);
489 case MCAST_JOIN_SOURCE_GROUP:
490 case MCAST_LEAVE_SOURCE_GROUP:
491 case MCAST_BLOCK_SOURCE:
492 case MCAST_UNBLOCK_SOURCE:
494 struct compat_group_source_req __user *gsr32 = (void __user *)optval;
495 struct group_source_req __user *kgsr = compat_alloc_user_space(
496 sizeof(struct group_source_req));
499 if (!access_ok(gsr32, sizeof(*gsr32)) ||
501 sizeof(struct group_source_req)) ||
502 __get_user(interface, &gsr32->gsr_interface) ||
503 __put_user(interface, &kgsr->gsr_interface) ||
504 copy_in_user(&kgsr->gsr_group, &gsr32->gsr_group,
505 sizeof(kgsr->gsr_group)) ||
506 copy_in_user(&kgsr->gsr_source, &gsr32->gsr_source,
507 sizeof(kgsr->gsr_source)))
509 koptval = (char __user *)kgsr;
510 koptlen = sizeof(struct group_source_req);
515 struct compat_group_filter __user *gf32 = (void __user *)optval;
516 struct group_filter __user *kgf;
517 u32 interface, fmode, numsrc;
519 if (!access_ok(gf32, __COMPAT_GF0_SIZE) ||
520 __get_user(interface, &gf32->gf_interface) ||
521 __get_user(fmode, &gf32->gf_fmode) ||
522 __get_user(numsrc, &gf32->gf_numsrc))
524 koptlen = optlen + sizeof(struct group_filter) -
525 sizeof(struct compat_group_filter);
526 if (koptlen < GROUP_FILTER_SIZE(numsrc))
528 kgf = compat_alloc_user_space(koptlen);
529 if (!access_ok(kgf, koptlen) ||
530 __put_user(interface, &kgf->gf_interface) ||
531 __put_user(fmode, &kgf->gf_fmode) ||
532 __put_user(numsrc, &kgf->gf_numsrc) ||
533 copy_in_user(&kgf->gf_group, &gf32->gf_group,
534 sizeof(kgf->gf_group)) ||
535 (numsrc && copy_in_user(kgf->gf_slist, gf32->gf_slist,
536 numsrc * sizeof(kgf->gf_slist[0]))))
538 koptval = (char __user *)kgf;
545 return setsockopt(sock, level, optname, koptval, koptlen);
547 EXPORT_SYMBOL(compat_mc_setsockopt);
549 int compat_mc_getsockopt(struct sock *sock, int level, int optname,
550 char __user *optval, int __user *optlen,
551 int (*getsockopt)(struct sock *, int, int, char __user *, int __user *))
553 struct compat_group_filter __user *gf32 = (void __user *)optval;
554 struct group_filter __user *kgf;
556 u32 interface, fmode, numsrc;
559 if (optname != MCAST_MSFILTER)
560 return getsockopt(sock, level, optname, optval, optlen);
562 koptlen = compat_alloc_user_space(sizeof(*koptlen));
563 if (!access_ok(optlen, sizeof(*optlen)) ||
564 __get_user(ulen, optlen))
567 /* adjust len for pad */
568 klen = ulen + sizeof(*kgf) - sizeof(*gf32);
570 if (klen < GROUP_FILTER_SIZE(0))
573 if (!access_ok(koptlen, sizeof(*koptlen)) ||
574 __put_user(klen, koptlen))
577 /* have to allow space for previous compat_alloc_user_space, too */
578 kgf = compat_alloc_user_space(klen+sizeof(*optlen));
580 if (!access_ok(gf32, __COMPAT_GF0_SIZE) ||
581 __get_user(interface, &gf32->gf_interface) ||
582 __get_user(fmode, &gf32->gf_fmode) ||
583 __get_user(numsrc, &gf32->gf_numsrc) ||
584 __put_user(interface, &kgf->gf_interface) ||
585 __put_user(fmode, &kgf->gf_fmode) ||
586 __put_user(numsrc, &kgf->gf_numsrc) ||
587 copy_in_user(&kgf->gf_group, &gf32->gf_group, sizeof(kgf->gf_group)))
590 err = getsockopt(sock, level, optname, (char __user *)kgf, koptlen);
594 if (!access_ok(koptlen, sizeof(*koptlen)) ||
595 __get_user(klen, koptlen))
598 ulen = klen - (sizeof(*kgf)-sizeof(*gf32));
600 if (!access_ok(optlen, sizeof(*optlen)) ||
601 __put_user(ulen, optlen))
604 if (!access_ok(kgf, klen) ||
605 !access_ok(gf32, ulen) ||
606 __get_user(interface, &kgf->gf_interface) ||
607 __get_user(fmode, &kgf->gf_fmode) ||
608 __get_user(numsrc, &kgf->gf_numsrc) ||
609 __put_user(interface, &gf32->gf_interface) ||
610 __put_user(fmode, &gf32->gf_fmode) ||
611 __put_user(numsrc, &gf32->gf_numsrc))
616 klen -= GROUP_FILTER_SIZE(0);
617 copylen = numsrc * sizeof(gf32->gf_slist[0]);
620 if (copy_in_user(gf32->gf_slist, kgf->gf_slist, copylen))
625 EXPORT_SYMBOL(compat_mc_getsockopt);
628 /* Argument list sizes for compat_sys_socketcall */
629 #define AL(x) ((x) * sizeof(u32))
630 static unsigned char nas[21] = {
631 AL(0), AL(3), AL(3), AL(3), AL(2), AL(3),
632 AL(3), AL(3), AL(4), AL(4), AL(4), AL(6),
633 AL(6), AL(2), AL(5), AL(5), AL(3), AL(3),
638 static inline long __compat_sys_sendmsg(int fd,
639 struct compat_msghdr __user *msg,
642 return __sys_sendmsg(fd, (struct user_msghdr __user *)msg,
643 flags | MSG_CMSG_COMPAT, false);
646 COMPAT_SYSCALL_DEFINE3(sendmsg, int, fd, struct compat_msghdr __user *, msg,
649 return __compat_sys_sendmsg(fd, msg, flags);
652 static inline long __compat_sys_sendmmsg(int fd,
653 struct compat_mmsghdr __user *mmsg,
654 unsigned int vlen, unsigned int flags)
656 return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
657 flags | MSG_CMSG_COMPAT, false);
660 COMPAT_SYSCALL_DEFINE4(sendmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
661 unsigned int, vlen, unsigned int, flags)
663 return __compat_sys_sendmmsg(fd, mmsg, vlen, flags);
666 static inline long __compat_sys_recvmsg(int fd,
667 struct compat_msghdr __user *msg,
670 return __sys_recvmsg(fd, (struct user_msghdr __user *)msg,
671 flags | MSG_CMSG_COMPAT, false);
674 COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg,
677 return __compat_sys_recvmsg(fd, msg, flags);
680 static inline long __compat_sys_recvfrom(int fd, void __user *buf,
681 compat_size_t len, unsigned int flags,
682 struct sockaddr __user *addr,
685 return __sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr,
689 COMPAT_SYSCALL_DEFINE4(recv, int, fd, void __user *, buf, compat_size_t, len, unsigned int, flags)
691 return __compat_sys_recvfrom(fd, buf, len, flags, NULL, NULL);
694 COMPAT_SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, buf, compat_size_t, len,
695 unsigned int, flags, struct sockaddr __user *, addr,
696 int __user *, addrlen)
698 return __compat_sys_recvfrom(fd, buf, len, flags, addr, addrlen);
701 COMPAT_SYSCALL_DEFINE5(recvmmsg_time64, int, fd, struct compat_mmsghdr __user *, mmsg,
702 unsigned int, vlen, unsigned int, flags,
703 struct __kernel_timespec __user *, timeout)
705 return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
706 flags | MSG_CMSG_COMPAT, timeout, NULL);
709 #ifdef CONFIG_COMPAT_32BIT_TIME
710 COMPAT_SYSCALL_DEFINE5(recvmmsg_time32, int, fd, struct compat_mmsghdr __user *, mmsg,
711 unsigned int, vlen, unsigned int, flags,
712 struct old_timespec32 __user *, timeout)
714 return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
715 flags | MSG_CMSG_COMPAT, NULL, timeout);
719 COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
726 if (call < SYS_SOCKET || call > SYS_SENDMMSG)
732 if (copy_from_user(a, args, len))
735 ret = audit_socketcall_compat(len / sizeof(a[0]), a);
744 ret = __sys_socket(a0, a1, a[2]);
747 ret = __sys_bind(a0, compat_ptr(a1), a[2]);
750 ret = __sys_connect(a0, compat_ptr(a1), a[2]);
753 ret = __sys_listen(a0, a1);
756 ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0);
758 case SYS_GETSOCKNAME:
759 ret = __sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2]));
761 case SYS_GETPEERNAME:
762 ret = __sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2]));
765 ret = __sys_socketpair(a0, a1, a[2], compat_ptr(a[3]));
768 ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3], NULL, 0);
771 ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3],
772 compat_ptr(a[4]), a[5]);
775 ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3],
779 ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3],
784 ret = __sys_shutdown(a0, a1);
787 ret = __compat_sys_setsockopt(a0, a1, a[2],
788 compat_ptr(a[3]), a[4]);
791 ret = __compat_sys_getsockopt(a0, a1, a[2],
796 ret = __compat_sys_sendmsg(a0, compat_ptr(a1), a[2]);
799 ret = __compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]);
802 ret = __compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
805 ret = __sys_recvmmsg(a0, compat_ptr(a1), a[2],
806 a[3] | MSG_CMSG_COMPAT, NULL,
810 ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]);