2 * 32bit Socket syscall emulation. Based on arch/sparc64/kernel/sys_sparc32.c.
4 * Copyright (C) 2000 VA Linux Co
5 * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
6 * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
7 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
8 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
9 * Copyright (C) 2000 Hewlett-Packard Co.
10 * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
11 * Copyright (C) 2000,2001 Andi Kleen, SuSE Labs
14 #include <linux/kernel.h>
15 #include <linux/gfp.h>
17 #include <linux/types.h>
18 #include <linux/file.h>
19 #include <linux/icmpv6.h>
20 #include <linux/socket.h>
21 #include <linux/syscalls.h>
22 #include <linux/filter.h>
23 #include <linux/compat.h>
24 #include <linux/security.h>
25 #include <linux/audit.h>
26 #include <linux/export.h>
32 #include <linux/uaccess.h>
33 #include <net/compat.h>
35 int get_compat_msghdr(struct msghdr *kmsg,
36 struct compat_msghdr __user *umsg,
37 struct sockaddr __user **save_addr,
40 struct compat_msghdr msg;
43 if (copy_from_user(&msg, umsg, sizeof(*umsg)))
46 kmsg->msg_flags = msg.msg_flags;
47 kmsg->msg_namelen = msg.msg_namelen;
50 kmsg->msg_namelen = 0;
52 if (kmsg->msg_namelen < 0)
55 if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))
56 kmsg->msg_namelen = sizeof(struct sockaddr_storage);
58 kmsg->msg_control = compat_ptr(msg.msg_control);
59 kmsg->msg_controllen = msg.msg_controllen;
62 *save_addr = compat_ptr(msg.msg_name);
64 if (msg.msg_name && kmsg->msg_namelen) {
66 err = move_addr_to_kernel(compat_ptr(msg.msg_name),
73 kmsg->msg_name = NULL;
74 kmsg->msg_namelen = 0;
77 if (msg.msg_iovlen > UIO_MAXIOV)
80 kmsg->msg_iocb = NULL;
82 return compat_import_iovec(save_addr ? READ : WRITE,
83 compat_ptr(msg.msg_iov), msg.msg_iovlen,
84 UIO_FASTIOV, iov, &kmsg->msg_iter);
88 #define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32))
90 #define CMSG_COMPAT_DATA(cmsg) \
91 ((void __user *)((char __user *)(cmsg) + sizeof(struct compat_cmsghdr)))
92 #define CMSG_COMPAT_SPACE(len) \
93 (sizeof(struct compat_cmsghdr) + CMSG_COMPAT_ALIGN(len))
94 #define CMSG_COMPAT_LEN(len) \
95 (sizeof(struct compat_cmsghdr) + (len))
97 #define CMSG_COMPAT_FIRSTHDR(msg) \
98 (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \
99 (struct compat_cmsghdr __user *)((msg)->msg_control) : \
100 (struct compat_cmsghdr __user *)NULL)
102 #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \
103 ((ucmlen) >= sizeof(struct compat_cmsghdr) && \
104 (ucmlen) <= (unsigned long) \
105 ((mhdr)->msg_controllen - \
106 ((char *)(ucmsg) - (char *)(mhdr)->msg_control)))
108 static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg,
109 struct compat_cmsghdr __user *cmsg, int cmsg_len)
111 char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len);
112 if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) >
115 return (struct compat_cmsghdr __user *)ptr;
118 /* There is a lot of hair here because the alignment rules (and
119 * thus placement) of cmsg headers and length are different for
120 * 32-bit apps. -DaveM
122 int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk,
123 unsigned char *stackbuf, int stackbuf_size)
125 struct compat_cmsghdr __user *ucmsg;
126 struct cmsghdr *kcmsg, *kcmsg_base;
127 compat_size_t ucmlen;
128 __kernel_size_t kcmlen, tmp;
131 BUILD_BUG_ON(sizeof(struct compat_cmsghdr) !=
132 CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)));
135 kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;
136 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
137 while (ucmsg != NULL) {
138 if (get_user(ucmlen, &ucmsg->cmsg_len))
142 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
145 tmp = ((ucmlen - sizeof(*ucmsg)) + sizeof(struct cmsghdr));
146 tmp = CMSG_ALIGN(tmp);
148 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
153 /* The kcmlen holds the 64-bit version of the control length.
154 * It may not be modified as we do not stick it into the kmsg
155 * until we have successfully copied over all of the data
158 if (kcmlen > stackbuf_size)
159 kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL);
163 /* Now copy them over neatly. */
164 memset(kcmsg, 0, kcmlen);
165 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
166 while (ucmsg != NULL) {
167 if (__get_user(ucmlen, &ucmsg->cmsg_len))
169 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
171 tmp = ((ucmlen - sizeof(*ucmsg)) + sizeof(struct cmsghdr));
172 if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp))
174 kcmsg->cmsg_len = tmp;
175 tmp = CMSG_ALIGN(tmp);
176 if (__get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level) ||
177 __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type) ||
178 copy_from_user(CMSG_DATA(kcmsg),
179 CMSG_COMPAT_DATA(ucmsg),
180 (ucmlen - sizeof(*ucmsg))))
184 kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp);
185 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
189 * check the length of messages copied in is the same as the
190 * what we get from the first loop
192 if ((char *)kcmsg - (char *)kcmsg_base != kcmlen)
195 /* Ok, looks like we made it. Hook it up and return success. */
196 kmsg->msg_control = kcmsg_base;
197 kmsg->msg_controllen = kcmlen;
203 if (kcmsg_base != (struct cmsghdr *)stackbuf)
204 sock_kfree_s(sk, kcmsg_base, kcmlen);
208 int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
210 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
211 struct compat_cmsghdr cmhdr;
212 struct compat_timeval ctv;
213 struct compat_timespec cts[3];
216 if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
217 kmsg->msg_flags |= MSG_CTRUNC;
218 return 0; /* XXX: return error? check spec. */
221 if (!COMPAT_USE_64BIT_TIME) {
222 if (level == SOL_SOCKET && type == SCM_TIMESTAMP) {
223 struct timeval *tv = (struct timeval *)data;
224 ctv.tv_sec = tv->tv_sec;
225 ctv.tv_usec = tv->tv_usec;
229 if (level == SOL_SOCKET &&
230 (type == SCM_TIMESTAMPNS || type == SCM_TIMESTAMPING)) {
231 int count = type == SCM_TIMESTAMPNS ? 1 : 3;
233 struct timespec *ts = (struct timespec *)data;
234 for (i = 0; i < count; i++) {
235 cts[i].tv_sec = ts[i].tv_sec;
236 cts[i].tv_nsec = ts[i].tv_nsec;
239 len = sizeof(cts[0]) * count;
243 cmlen = CMSG_COMPAT_LEN(len);
244 if (kmsg->msg_controllen < cmlen) {
245 kmsg->msg_flags |= MSG_CTRUNC;
246 cmlen = kmsg->msg_controllen;
248 cmhdr.cmsg_level = level;
249 cmhdr.cmsg_type = type;
250 cmhdr.cmsg_len = cmlen;
252 if (copy_to_user(cm, &cmhdr, sizeof cmhdr))
254 if (copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr)))
256 cmlen = CMSG_COMPAT_SPACE(len);
257 if (kmsg->msg_controllen < cmlen)
258 cmlen = kmsg->msg_controllen;
259 kmsg->msg_control += cmlen;
260 kmsg->msg_controllen -= cmlen;
264 void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
266 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
267 int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int);
268 int fdnum = scm->fp->count;
269 struct file **fp = scm->fp->fp;
276 for (i = 0, cmfptr = (int __user *) CMSG_COMPAT_DATA(cm); i < fdmax; i++, cmfptr++) {
278 err = security_file_receive(fp[i]);
281 err = get_unused_fd_flags(MSG_CMSG_CLOEXEC & kmsg->msg_flags
286 err = put_user(new_fd, cmfptr);
288 put_unused_fd(new_fd);
291 /* Bump the usage count and install the file. */
292 fd_install(new_fd, get_file(fp[i]));
296 int cmlen = CMSG_COMPAT_LEN(i * sizeof(int));
297 err = put_user(SOL_SOCKET, &cm->cmsg_level);
299 err = put_user(SCM_RIGHTS, &cm->cmsg_type);
301 err = put_user(cmlen, &cm->cmsg_len);
303 cmlen = CMSG_COMPAT_SPACE(i * sizeof(int));
304 kmsg->msg_control += cmlen;
305 kmsg->msg_controllen -= cmlen;
309 kmsg->msg_flags |= MSG_CTRUNC;
312 * All of the files that fit in the message have had their
313 * usage counts incremented, so we just free the list.
318 /* allocate a 64-bit sock_fprog on the user stack for duration of syscall. */
319 struct sock_fprog __user *get_compat_bpf_fprog(char __user *optval)
321 struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval;
322 struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog));
323 struct compat_sock_fprog f32;
326 if (copy_from_user(&f32, fprog32, sizeof(*fprog32)))
328 memset(&f, 0, sizeof(f));
330 f.filter = compat_ptr(f32.filter);
331 if (copy_to_user(kfprog, &f, sizeof(struct sock_fprog)))
336 EXPORT_SYMBOL_GPL(get_compat_bpf_fprog);
338 static int do_set_attach_filter(struct socket *sock, int level, int optname,
339 char __user *optval, unsigned int optlen)
341 struct sock_fprog __user *kfprog;
343 kfprog = get_compat_bpf_fprog(optval);
347 return sock_setsockopt(sock, level, optname, (char __user *)kfprog,
348 sizeof(struct sock_fprog));
351 static int do_set_sock_timeout(struct socket *sock, int level,
352 int optname, char __user *optval, unsigned int optlen)
354 struct compat_timeval __user *up = (struct compat_timeval __user *)optval;
355 struct timeval ktime;
359 if (optlen < sizeof(*up))
361 if (!access_ok(up, sizeof(*up)) ||
362 __get_user(ktime.tv_sec, &up->tv_sec) ||
363 __get_user(ktime.tv_usec, &up->tv_usec))
367 err = sock_setsockopt(sock, level, optname, (char *)&ktime, sizeof(ktime));
373 static int compat_sock_setsockopt(struct socket *sock, int level, int optname,
374 char __user *optval, unsigned int optlen)
376 if (optname == SO_ATTACH_FILTER ||
377 optname == SO_ATTACH_REUSEPORT_CBPF)
378 return do_set_attach_filter(sock, level, optname,
380 if (!COMPAT_USE_64BIT_TIME &&
381 (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
382 return do_set_sock_timeout(sock, level, optname, optval, optlen);
384 return sock_setsockopt(sock, level, optname, optval, optlen);
387 static int __compat_sys_setsockopt(int fd, int level, int optname,
388 char __user *optval, unsigned int optlen)
393 if (optlen > INT_MAX)
396 sock = sockfd_lookup(fd, &err);
398 err = security_socket_setsockopt(sock, level, optname);
404 if (level == SOL_SOCKET)
405 err = compat_sock_setsockopt(sock, level,
406 optname, optval, optlen);
407 else if (sock->ops->compat_setsockopt)
408 err = sock->ops->compat_setsockopt(sock, level,
409 optname, optval, optlen);
411 err = sock->ops->setsockopt(sock, level,
412 optname, optval, optlen);
418 COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname,
419 char __user *, optval, unsigned int, optlen)
421 return __compat_sys_setsockopt(fd, level, optname, optval, optlen);
424 static int do_get_sock_timeout(struct socket *sock, int level, int optname,
425 char __user *optval, int __user *optlen)
427 struct compat_timeval __user *up;
428 struct timeval ktime;
432 up = (struct compat_timeval __user *) optval;
433 if (get_user(len, optlen))
435 if (len < sizeof(*up))
440 err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len);
444 if (put_user(sizeof(*up), optlen) ||
445 !access_ok(up, sizeof(*up)) ||
446 __put_user(ktime.tv_sec, &up->tv_sec) ||
447 __put_user(ktime.tv_usec, &up->tv_usec))
453 static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
454 char __user *optval, int __user *optlen)
456 if (!COMPAT_USE_64BIT_TIME &&
457 (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
458 return do_get_sock_timeout(sock, level, optname, optval, optlen);
459 return sock_getsockopt(sock, level, optname, optval, optlen);
462 int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
464 struct compat_timeval __user *ctv;
468 if (COMPAT_USE_64BIT_TIME)
469 return sock_get_timestamp(sk, userstamp);
471 ctv = (struct compat_timeval __user *) userstamp;
473 sock_enable_timestamp(sk, SOCK_TIMESTAMP);
474 tv = ktime_to_timeval(sock_read_timestamp(sk));
478 if (tv.tv_sec == 0) {
479 ktime_t kt = ktime_get_real();
480 sock_write_timestamp(sk, kt);
481 tv = ktime_to_timeval(kt);
484 if (put_user(tv.tv_sec, &ctv->tv_sec) ||
485 put_user(tv.tv_usec, &ctv->tv_usec))
489 EXPORT_SYMBOL(compat_sock_get_timestamp);
491 int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
493 struct compat_timespec __user *ctv;
497 if (COMPAT_USE_64BIT_TIME)
498 return sock_get_timestampns (sk, userstamp);
500 ctv = (struct compat_timespec __user *) userstamp;
502 sock_enable_timestamp(sk, SOCK_TIMESTAMP);
503 ts = ktime_to_timespec(sock_read_timestamp(sk));
506 if (ts.tv_sec == 0) {
507 ktime_t kt = ktime_get_real();
508 sock_write_timestamp(sk, kt);
509 ts = ktime_to_timespec(kt);
512 if (put_user(ts.tv_sec, &ctv->tv_sec) ||
513 put_user(ts.tv_nsec, &ctv->tv_nsec))
517 EXPORT_SYMBOL(compat_sock_get_timestampns);
519 static int __compat_sys_getsockopt(int fd, int level, int optname,
524 struct socket *sock = sockfd_lookup(fd, &err);
527 err = security_socket_getsockopt(sock, level, optname);
533 if (level == SOL_SOCKET)
534 err = compat_sock_getsockopt(sock, level,
535 optname, optval, optlen);
536 else if (sock->ops->compat_getsockopt)
537 err = sock->ops->compat_getsockopt(sock, level,
538 optname, optval, optlen);
540 err = sock->ops->getsockopt(sock, level,
541 optname, optval, optlen);
547 COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname,
548 char __user *, optval, int __user *, optlen)
550 return __compat_sys_getsockopt(fd, level, optname, optval, optlen);
553 struct compat_group_req {
555 struct __kernel_sockaddr_storage gr_group
559 struct compat_group_source_req {
561 struct __kernel_sockaddr_storage gsr_group
563 struct __kernel_sockaddr_storage gsr_source
567 struct compat_group_filter {
569 struct __kernel_sockaddr_storage gf_group
573 struct __kernel_sockaddr_storage gf_slist[1]
577 #define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \
578 sizeof(struct __kernel_sockaddr_storage))
581 int compat_mc_setsockopt(struct sock *sock, int level, int optname,
582 char __user *optval, unsigned int optlen,
583 int (*setsockopt)(struct sock *, int, int, char __user *, unsigned int))
585 char __user *koptval = optval;
586 int koptlen = optlen;
589 case MCAST_JOIN_GROUP:
590 case MCAST_LEAVE_GROUP:
592 struct compat_group_req __user *gr32 = (void *)optval;
593 struct group_req __user *kgr =
594 compat_alloc_user_space(sizeof(struct group_req));
597 if (!access_ok(gr32, sizeof(*gr32)) ||
598 !access_ok(kgr, sizeof(struct group_req)) ||
599 __get_user(interface, &gr32->gr_interface) ||
600 __put_user(interface, &kgr->gr_interface) ||
601 copy_in_user(&kgr->gr_group, &gr32->gr_group,
602 sizeof(kgr->gr_group)))
604 koptval = (char __user *)kgr;
605 koptlen = sizeof(struct group_req);
608 case MCAST_JOIN_SOURCE_GROUP:
609 case MCAST_LEAVE_SOURCE_GROUP:
610 case MCAST_BLOCK_SOURCE:
611 case MCAST_UNBLOCK_SOURCE:
613 struct compat_group_source_req __user *gsr32 = (void *)optval;
614 struct group_source_req __user *kgsr = compat_alloc_user_space(
615 sizeof(struct group_source_req));
618 if (!access_ok(gsr32, sizeof(*gsr32)) ||
620 sizeof(struct group_source_req)) ||
621 __get_user(interface, &gsr32->gsr_interface) ||
622 __put_user(interface, &kgsr->gsr_interface) ||
623 copy_in_user(&kgsr->gsr_group, &gsr32->gsr_group,
624 sizeof(kgsr->gsr_group)) ||
625 copy_in_user(&kgsr->gsr_source, &gsr32->gsr_source,
626 sizeof(kgsr->gsr_source)))
628 koptval = (char __user *)kgsr;
629 koptlen = sizeof(struct group_source_req);
634 struct compat_group_filter __user *gf32 = (void *)optval;
635 struct group_filter __user *kgf;
636 u32 interface, fmode, numsrc;
638 if (!access_ok(gf32, __COMPAT_GF0_SIZE) ||
639 __get_user(interface, &gf32->gf_interface) ||
640 __get_user(fmode, &gf32->gf_fmode) ||
641 __get_user(numsrc, &gf32->gf_numsrc))
643 koptlen = optlen + sizeof(struct group_filter) -
644 sizeof(struct compat_group_filter);
645 if (koptlen < GROUP_FILTER_SIZE(numsrc))
647 kgf = compat_alloc_user_space(koptlen);
648 if (!access_ok(kgf, koptlen) ||
649 __put_user(interface, &kgf->gf_interface) ||
650 __put_user(fmode, &kgf->gf_fmode) ||
651 __put_user(numsrc, &kgf->gf_numsrc) ||
652 copy_in_user(&kgf->gf_group, &gf32->gf_group,
653 sizeof(kgf->gf_group)) ||
654 (numsrc && copy_in_user(kgf->gf_slist, gf32->gf_slist,
655 numsrc * sizeof(kgf->gf_slist[0]))))
657 koptval = (char __user *)kgf;
664 return setsockopt(sock, level, optname, koptval, koptlen);
666 EXPORT_SYMBOL(compat_mc_setsockopt);
668 int compat_mc_getsockopt(struct sock *sock, int level, int optname,
669 char __user *optval, int __user *optlen,
670 int (*getsockopt)(struct sock *, int, int, char __user *, int __user *))
672 struct compat_group_filter __user *gf32 = (void *)optval;
673 struct group_filter __user *kgf;
675 u32 interface, fmode, numsrc;
678 if (optname != MCAST_MSFILTER)
679 return getsockopt(sock, level, optname, optval, optlen);
681 koptlen = compat_alloc_user_space(sizeof(*koptlen));
682 if (!access_ok(optlen, sizeof(*optlen)) ||
683 __get_user(ulen, optlen))
686 /* adjust len for pad */
687 klen = ulen + sizeof(*kgf) - sizeof(*gf32);
689 if (klen < GROUP_FILTER_SIZE(0))
692 if (!access_ok(koptlen, sizeof(*koptlen)) ||
693 __put_user(klen, koptlen))
696 /* have to allow space for previous compat_alloc_user_space, too */
697 kgf = compat_alloc_user_space(klen+sizeof(*optlen));
699 if (!access_ok(gf32, __COMPAT_GF0_SIZE) ||
700 __get_user(interface, &gf32->gf_interface) ||
701 __get_user(fmode, &gf32->gf_fmode) ||
702 __get_user(numsrc, &gf32->gf_numsrc) ||
703 __put_user(interface, &kgf->gf_interface) ||
704 __put_user(fmode, &kgf->gf_fmode) ||
705 __put_user(numsrc, &kgf->gf_numsrc) ||
706 copy_in_user(&kgf->gf_group, &gf32->gf_group, sizeof(kgf->gf_group)))
709 err = getsockopt(sock, level, optname, (char __user *)kgf, koptlen);
713 if (!access_ok(koptlen, sizeof(*koptlen)) ||
714 __get_user(klen, koptlen))
717 ulen = klen - (sizeof(*kgf)-sizeof(*gf32));
719 if (!access_ok(optlen, sizeof(*optlen)) ||
720 __put_user(ulen, optlen))
723 if (!access_ok(kgf, klen) ||
724 !access_ok(gf32, ulen) ||
725 __get_user(interface, &kgf->gf_interface) ||
726 __get_user(fmode, &kgf->gf_fmode) ||
727 __get_user(numsrc, &kgf->gf_numsrc) ||
728 __put_user(interface, &gf32->gf_interface) ||
729 __put_user(fmode, &gf32->gf_fmode) ||
730 __put_user(numsrc, &gf32->gf_numsrc))
735 klen -= GROUP_FILTER_SIZE(0);
736 copylen = numsrc * sizeof(gf32->gf_slist[0]);
739 if (copy_in_user(gf32->gf_slist, kgf->gf_slist, copylen))
744 EXPORT_SYMBOL(compat_mc_getsockopt);
747 /* Argument list sizes for compat_sys_socketcall */
748 #define AL(x) ((x) * sizeof(u32))
749 static unsigned char nas[21] = {
750 AL(0), AL(3), AL(3), AL(3), AL(2), AL(3),
751 AL(3), AL(3), AL(4), AL(4), AL(4), AL(6),
752 AL(6), AL(2), AL(5), AL(5), AL(3), AL(3),
757 static inline long __compat_sys_sendmsg(int fd,
758 struct compat_msghdr __user *msg,
761 return __sys_sendmsg(fd, (struct user_msghdr __user *)msg,
762 flags | MSG_CMSG_COMPAT, false);
765 COMPAT_SYSCALL_DEFINE3(sendmsg, int, fd, struct compat_msghdr __user *, msg,
768 return __compat_sys_sendmsg(fd, msg, flags);
771 static inline long __compat_sys_sendmmsg(int fd,
772 struct compat_mmsghdr __user *mmsg,
773 unsigned int vlen, unsigned int flags)
775 return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
776 flags | MSG_CMSG_COMPAT, false);
779 COMPAT_SYSCALL_DEFINE4(sendmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
780 unsigned int, vlen, unsigned int, flags)
782 return __compat_sys_sendmmsg(fd, mmsg, vlen, flags);
785 static inline long __compat_sys_recvmsg(int fd,
786 struct compat_msghdr __user *msg,
789 return __sys_recvmsg(fd, (struct user_msghdr __user *)msg,
790 flags | MSG_CMSG_COMPAT, false);
793 COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg,
796 return __compat_sys_recvmsg(fd, msg, flags);
799 static inline long __compat_sys_recvfrom(int fd, void __user *buf,
800 compat_size_t len, unsigned int flags,
801 struct sockaddr __user *addr,
804 return __sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr,
808 COMPAT_SYSCALL_DEFINE4(recv, int, fd, void __user *, buf, compat_size_t, len, unsigned int, flags)
810 return __compat_sys_recvfrom(fd, buf, len, flags, NULL, NULL);
813 COMPAT_SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, buf, compat_size_t, len,
814 unsigned int, flags, struct sockaddr __user *, addr,
815 int __user *, addrlen)
817 return __compat_sys_recvfrom(fd, buf, len, flags, addr, addrlen);
820 COMPAT_SYSCALL_DEFINE5(recvmmsg_time64, int, fd, struct compat_mmsghdr __user *, mmsg,
821 unsigned int, vlen, unsigned int, flags,
822 struct __kernel_timespec __user *, timeout)
824 return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
825 flags | MSG_CMSG_COMPAT, timeout, NULL);
828 #ifdef CONFIG_COMPAT_32BIT_TIME
829 COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
830 unsigned int, vlen, unsigned int, flags,
831 struct old_timespec32 __user *, timeout)
833 return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
834 flags | MSG_CMSG_COMPAT, NULL, timeout);
838 COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
845 if (call < SYS_SOCKET || call > SYS_SENDMMSG)
851 if (copy_from_user(a, args, len))
854 ret = audit_socketcall_compat(len / sizeof(a[0]), a);
863 ret = __sys_socket(a0, a1, a[2]);
866 ret = __sys_bind(a0, compat_ptr(a1), a[2]);
869 ret = __sys_connect(a0, compat_ptr(a1), a[2]);
872 ret = __sys_listen(a0, a1);
875 ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0);
877 case SYS_GETSOCKNAME:
878 ret = __sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2]));
880 case SYS_GETPEERNAME:
881 ret = __sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2]));
884 ret = __sys_socketpair(a0, a1, a[2], compat_ptr(a[3]));
887 ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3], NULL, 0);
890 ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3],
891 compat_ptr(a[4]), a[5]);
894 ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3],
898 ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3],
903 ret = __sys_shutdown(a0, a1);
906 ret = __compat_sys_setsockopt(a0, a1, a[2],
907 compat_ptr(a[3]), a[4]);
910 ret = __compat_sys_getsockopt(a0, a1, a[2],
915 ret = __compat_sys_sendmsg(a0, compat_ptr(a1), a[2]);
918 ret = __compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]);
921 ret = __compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
924 ret = __sys_recvmmsg(a0, compat_ptr(a1), a[2],
925 a[3] | MSG_CMSG_COMPAT, NULL,
929 ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]);