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 __receive_sock(fp[i]);
293 fd_install(new_fd, get_file(fp[i]));
297 int cmlen = CMSG_COMPAT_LEN(i * sizeof(int));
298 err = put_user(SOL_SOCKET, &cm->cmsg_level);
300 err = put_user(SCM_RIGHTS, &cm->cmsg_type);
302 err = put_user(cmlen, &cm->cmsg_len);
304 cmlen = CMSG_COMPAT_SPACE(i * sizeof(int));
305 kmsg->msg_control += cmlen;
306 kmsg->msg_controllen -= cmlen;
310 kmsg->msg_flags |= MSG_CTRUNC;
313 * All of the files that fit in the message have had their
314 * usage counts incremented, so we just free the list.
319 /* allocate a 64-bit sock_fprog on the user stack for duration of syscall. */
320 struct sock_fprog __user *get_compat_bpf_fprog(char __user *optval)
322 struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval;
323 struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog));
324 struct compat_sock_fprog f32;
327 if (copy_from_user(&f32, fprog32, sizeof(*fprog32)))
329 memset(&f, 0, sizeof(f));
331 f.filter = compat_ptr(f32.filter);
332 if (copy_to_user(kfprog, &f, sizeof(struct sock_fprog)))
337 EXPORT_SYMBOL_GPL(get_compat_bpf_fprog);
339 static int do_set_attach_filter(struct socket *sock, int level, int optname,
340 char __user *optval, unsigned int optlen)
342 struct sock_fprog __user *kfprog;
344 kfprog = get_compat_bpf_fprog(optval);
348 return sock_setsockopt(sock, level, optname, (char __user *)kfprog,
349 sizeof(struct sock_fprog));
352 static int do_set_sock_timeout(struct socket *sock, int level,
353 int optname, char __user *optval, unsigned int optlen)
355 struct compat_timeval __user *up = (struct compat_timeval __user *)optval;
356 struct timeval ktime;
360 if (optlen < sizeof(*up))
362 if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
363 __get_user(ktime.tv_sec, &up->tv_sec) ||
364 __get_user(ktime.tv_usec, &up->tv_usec))
368 err = sock_setsockopt(sock, level, optname, (char *)&ktime, sizeof(ktime));
374 static int compat_sock_setsockopt(struct socket *sock, int level, int optname,
375 char __user *optval, unsigned int optlen)
377 if (optname == SO_ATTACH_FILTER ||
378 optname == SO_ATTACH_REUSEPORT_CBPF)
379 return do_set_attach_filter(sock, level, optname,
381 if (!COMPAT_USE_64BIT_TIME &&
382 (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
383 return do_set_sock_timeout(sock, level, optname, optval, optlen);
385 return sock_setsockopt(sock, level, optname, optval, optlen);
388 static int __compat_sys_setsockopt(int fd, int level, int optname,
389 char __user *optval, unsigned int optlen)
392 struct socket *sock = sockfd_lookup(fd, &err);
395 err = security_socket_setsockopt(sock, level, optname);
401 if (level == SOL_SOCKET)
402 err = compat_sock_setsockopt(sock, level,
403 optname, optval, optlen);
404 else if (sock->ops->compat_setsockopt)
405 err = sock->ops->compat_setsockopt(sock, level,
406 optname, optval, optlen);
408 err = sock->ops->setsockopt(sock, level,
409 optname, optval, optlen);
415 COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname,
416 char __user *, optval, unsigned int, optlen)
418 return __compat_sys_setsockopt(fd, level, optname, optval, optlen);
421 static int do_get_sock_timeout(struct socket *sock, int level, int optname,
422 char __user *optval, int __user *optlen)
424 struct compat_timeval __user *up;
425 struct timeval ktime;
429 up = (struct compat_timeval __user *) optval;
430 if (get_user(len, optlen))
432 if (len < sizeof(*up))
437 err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len);
441 if (put_user(sizeof(*up), optlen) ||
442 !access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
443 __put_user(ktime.tv_sec, &up->tv_sec) ||
444 __put_user(ktime.tv_usec, &up->tv_usec))
450 static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
451 char __user *optval, int __user *optlen)
453 if (!COMPAT_USE_64BIT_TIME &&
454 (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
455 return do_get_sock_timeout(sock, level, optname, optval, optlen);
456 return sock_getsockopt(sock, level, optname, optval, optlen);
459 int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
461 struct compat_timeval __user *ctv;
465 if (COMPAT_USE_64BIT_TIME)
466 return sock_get_timestamp(sk, userstamp);
468 ctv = (struct compat_timeval __user *) userstamp;
470 sock_enable_timestamp(sk, SOCK_TIMESTAMP);
471 tv = ktime_to_timeval(sock_read_timestamp(sk));
475 if (tv.tv_sec == 0) {
476 ktime_t kt = ktime_get_real();
477 sock_write_timestamp(sk, kt);
478 tv = ktime_to_timeval(kt);
481 if (put_user(tv.tv_sec, &ctv->tv_sec) ||
482 put_user(tv.tv_usec, &ctv->tv_usec))
486 EXPORT_SYMBOL(compat_sock_get_timestamp);
488 int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
490 struct compat_timespec __user *ctv;
494 if (COMPAT_USE_64BIT_TIME)
495 return sock_get_timestampns (sk, userstamp);
497 ctv = (struct compat_timespec __user *) userstamp;
499 sock_enable_timestamp(sk, SOCK_TIMESTAMP);
500 ts = ktime_to_timespec(sock_read_timestamp(sk));
503 if (ts.tv_sec == 0) {
504 ktime_t kt = ktime_get_real();
505 sock_write_timestamp(sk, kt);
506 ts = ktime_to_timespec(kt);
509 if (put_user(ts.tv_sec, &ctv->tv_sec) ||
510 put_user(ts.tv_nsec, &ctv->tv_nsec))
514 EXPORT_SYMBOL(compat_sock_get_timestampns);
516 static int __compat_sys_getsockopt(int fd, int level, int optname,
521 struct socket *sock = sockfd_lookup(fd, &err);
524 err = security_socket_getsockopt(sock, level, optname);
530 if (level == SOL_SOCKET)
531 err = compat_sock_getsockopt(sock, level,
532 optname, optval, optlen);
533 else if (sock->ops->compat_getsockopt)
534 err = sock->ops->compat_getsockopt(sock, level,
535 optname, optval, optlen);
537 err = sock->ops->getsockopt(sock, level,
538 optname, optval, optlen);
544 COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname,
545 char __user *, optval, int __user *, optlen)
547 return __compat_sys_getsockopt(fd, level, optname, optval, optlen);
550 struct compat_group_req {
552 struct __kernel_sockaddr_storage gr_group
556 struct compat_group_source_req {
558 struct __kernel_sockaddr_storage gsr_group
560 struct __kernel_sockaddr_storage gsr_source
564 struct compat_group_filter {
566 struct __kernel_sockaddr_storage gf_group
570 struct __kernel_sockaddr_storage gf_slist[1]
574 #define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \
575 sizeof(struct __kernel_sockaddr_storage))
578 int compat_mc_setsockopt(struct sock *sock, int level, int optname,
579 char __user *optval, unsigned int optlen,
580 int (*setsockopt)(struct sock *, int, int, char __user *, unsigned int))
582 char __user *koptval = optval;
583 int koptlen = optlen;
586 case MCAST_JOIN_GROUP:
587 case MCAST_LEAVE_GROUP:
589 struct compat_group_req __user *gr32 = (void *)optval;
590 struct group_req __user *kgr =
591 compat_alloc_user_space(sizeof(struct group_req));
594 if (!access_ok(VERIFY_READ, gr32, sizeof(*gr32)) ||
595 !access_ok(VERIFY_WRITE, kgr, sizeof(struct group_req)) ||
596 __get_user(interface, &gr32->gr_interface) ||
597 __put_user(interface, &kgr->gr_interface) ||
598 copy_in_user(&kgr->gr_group, &gr32->gr_group,
599 sizeof(kgr->gr_group)))
601 koptval = (char __user *)kgr;
602 koptlen = sizeof(struct group_req);
605 case MCAST_JOIN_SOURCE_GROUP:
606 case MCAST_LEAVE_SOURCE_GROUP:
607 case MCAST_BLOCK_SOURCE:
608 case MCAST_UNBLOCK_SOURCE:
610 struct compat_group_source_req __user *gsr32 = (void *)optval;
611 struct group_source_req __user *kgsr = compat_alloc_user_space(
612 sizeof(struct group_source_req));
615 if (!access_ok(VERIFY_READ, gsr32, sizeof(*gsr32)) ||
616 !access_ok(VERIFY_WRITE, kgsr,
617 sizeof(struct group_source_req)) ||
618 __get_user(interface, &gsr32->gsr_interface) ||
619 __put_user(interface, &kgsr->gsr_interface) ||
620 copy_in_user(&kgsr->gsr_group, &gsr32->gsr_group,
621 sizeof(kgsr->gsr_group)) ||
622 copy_in_user(&kgsr->gsr_source, &gsr32->gsr_source,
623 sizeof(kgsr->gsr_source)))
625 koptval = (char __user *)kgsr;
626 koptlen = sizeof(struct group_source_req);
631 struct compat_group_filter __user *gf32 = (void *)optval;
632 struct group_filter __user *kgf;
633 u32 interface, fmode, numsrc;
635 if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) ||
636 __get_user(interface, &gf32->gf_interface) ||
637 __get_user(fmode, &gf32->gf_fmode) ||
638 __get_user(numsrc, &gf32->gf_numsrc))
640 koptlen = optlen + sizeof(struct group_filter) -
641 sizeof(struct compat_group_filter);
642 if (koptlen < GROUP_FILTER_SIZE(numsrc))
644 kgf = compat_alloc_user_space(koptlen);
645 if (!access_ok(VERIFY_WRITE, kgf, koptlen) ||
646 __put_user(interface, &kgf->gf_interface) ||
647 __put_user(fmode, &kgf->gf_fmode) ||
648 __put_user(numsrc, &kgf->gf_numsrc) ||
649 copy_in_user(&kgf->gf_group, &gf32->gf_group,
650 sizeof(kgf->gf_group)) ||
651 (numsrc && copy_in_user(kgf->gf_slist, gf32->gf_slist,
652 numsrc * sizeof(kgf->gf_slist[0]))))
654 koptval = (char __user *)kgf;
661 return setsockopt(sock, level, optname, koptval, koptlen);
663 EXPORT_SYMBOL(compat_mc_setsockopt);
665 int compat_mc_getsockopt(struct sock *sock, int level, int optname,
666 char __user *optval, int __user *optlen,
667 int (*getsockopt)(struct sock *, int, int, char __user *, int __user *))
669 struct compat_group_filter __user *gf32 = (void *)optval;
670 struct group_filter __user *kgf;
672 u32 interface, fmode, numsrc;
675 if (optname != MCAST_MSFILTER)
676 return getsockopt(sock, level, optname, optval, optlen);
678 koptlen = compat_alloc_user_space(sizeof(*koptlen));
679 if (!access_ok(VERIFY_READ, optlen, sizeof(*optlen)) ||
680 __get_user(ulen, optlen))
683 /* adjust len for pad */
684 klen = ulen + sizeof(*kgf) - sizeof(*gf32);
686 if (klen < GROUP_FILTER_SIZE(0))
689 if (!access_ok(VERIFY_WRITE, koptlen, sizeof(*koptlen)) ||
690 __put_user(klen, koptlen))
693 /* have to allow space for previous compat_alloc_user_space, too */
694 kgf = compat_alloc_user_space(klen+sizeof(*optlen));
696 if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) ||
697 __get_user(interface, &gf32->gf_interface) ||
698 __get_user(fmode, &gf32->gf_fmode) ||
699 __get_user(numsrc, &gf32->gf_numsrc) ||
700 __put_user(interface, &kgf->gf_interface) ||
701 __put_user(fmode, &kgf->gf_fmode) ||
702 __put_user(numsrc, &kgf->gf_numsrc) ||
703 copy_in_user(&kgf->gf_group, &gf32->gf_group, sizeof(kgf->gf_group)))
706 err = getsockopt(sock, level, optname, (char __user *)kgf, koptlen);
710 if (!access_ok(VERIFY_READ, koptlen, sizeof(*koptlen)) ||
711 __get_user(klen, koptlen))
714 ulen = klen - (sizeof(*kgf)-sizeof(*gf32));
716 if (!access_ok(VERIFY_WRITE, optlen, sizeof(*optlen)) ||
717 __put_user(ulen, optlen))
720 if (!access_ok(VERIFY_READ, kgf, klen) ||
721 !access_ok(VERIFY_WRITE, gf32, ulen) ||
722 __get_user(interface, &kgf->gf_interface) ||
723 __get_user(fmode, &kgf->gf_fmode) ||
724 __get_user(numsrc, &kgf->gf_numsrc) ||
725 __put_user(interface, &gf32->gf_interface) ||
726 __put_user(fmode, &gf32->gf_fmode) ||
727 __put_user(numsrc, &gf32->gf_numsrc))
732 klen -= GROUP_FILTER_SIZE(0);
733 copylen = numsrc * sizeof(gf32->gf_slist[0]);
736 if (copy_in_user(gf32->gf_slist, kgf->gf_slist, copylen))
741 EXPORT_SYMBOL(compat_mc_getsockopt);
744 /* Argument list sizes for compat_sys_socketcall */
745 #define AL(x) ((x) * sizeof(u32))
746 static unsigned char nas[21] = {
747 AL(0), AL(3), AL(3), AL(3), AL(2), AL(3),
748 AL(3), AL(3), AL(4), AL(4), AL(4), AL(6),
749 AL(6), AL(2), AL(5), AL(5), AL(3), AL(3),
754 static inline long __compat_sys_sendmsg(int fd,
755 struct compat_msghdr __user *msg,
758 return __sys_sendmsg(fd, (struct user_msghdr __user *)msg,
759 flags | MSG_CMSG_COMPAT, false);
762 COMPAT_SYSCALL_DEFINE3(sendmsg, int, fd, struct compat_msghdr __user *, msg,
765 return __compat_sys_sendmsg(fd, msg, flags);
768 static inline long __compat_sys_sendmmsg(int fd,
769 struct compat_mmsghdr __user *mmsg,
770 unsigned int vlen, unsigned int flags)
772 return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
773 flags | MSG_CMSG_COMPAT, false);
776 COMPAT_SYSCALL_DEFINE4(sendmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
777 unsigned int, vlen, unsigned int, flags)
779 return __compat_sys_sendmmsg(fd, mmsg, vlen, flags);
782 static inline long __compat_sys_recvmsg(int fd,
783 struct compat_msghdr __user *msg,
786 return __sys_recvmsg(fd, (struct user_msghdr __user *)msg,
787 flags | MSG_CMSG_COMPAT, false);
790 COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg,
793 return __compat_sys_recvmsg(fd, msg, flags);
796 static inline long __compat_sys_recvfrom(int fd, void __user *buf,
797 compat_size_t len, unsigned int flags,
798 struct sockaddr __user *addr,
801 return __sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr,
805 COMPAT_SYSCALL_DEFINE4(recv, int, fd, void __user *, buf, compat_size_t, len, unsigned int, flags)
807 return __compat_sys_recvfrom(fd, buf, len, flags, NULL, NULL);
810 COMPAT_SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, buf, compat_size_t, len,
811 unsigned int, flags, struct sockaddr __user *, addr,
812 int __user *, addrlen)
814 return __compat_sys_recvfrom(fd, buf, len, flags, addr, addrlen);
817 static int __compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
818 unsigned int vlen, unsigned int flags,
819 struct compat_timespec __user *timeout)
822 struct timespec ktspec;
825 return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
826 flags | MSG_CMSG_COMPAT, NULL);
828 if (compat_get_timespec(&ktspec, timeout))
831 datagrams = __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
832 flags | MSG_CMSG_COMPAT, &ktspec);
833 if (datagrams > 0 && compat_put_timespec(&ktspec, timeout))
839 COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
840 unsigned int, vlen, unsigned int, flags,
841 struct compat_timespec __user *, timeout)
843 return __compat_sys_recvmmsg(fd, mmsg, vlen, flags, timeout);
846 COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
853 if (call < SYS_SOCKET || call > SYS_SENDMMSG)
859 if (copy_from_user(a, args, len))
862 ret = audit_socketcall_compat(len / sizeof(a[0]), a);
871 ret = __sys_socket(a0, a1, a[2]);
874 ret = __sys_bind(a0, compat_ptr(a1), a[2]);
877 ret = __sys_connect(a0, compat_ptr(a1), a[2]);
880 ret = __sys_listen(a0, a1);
883 ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0);
885 case SYS_GETSOCKNAME:
886 ret = __sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2]));
888 case SYS_GETPEERNAME:
889 ret = __sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2]));
892 ret = __sys_socketpair(a0, a1, a[2], compat_ptr(a[3]));
895 ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3], NULL, 0);
898 ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3],
899 compat_ptr(a[4]), a[5]);
902 ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3],
906 ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3],
911 ret = __sys_shutdown(a0, a1);
914 ret = __compat_sys_setsockopt(a0, a1, a[2],
915 compat_ptr(a[3]), a[4]);
918 ret = __compat_sys_getsockopt(a0, a1, a[2],
923 ret = __compat_sys_sendmsg(a0, compat_ptr(a1), a[2]);
926 ret = __compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]);
929 ret = __compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
932 ret = __compat_sys_recvmmsg(a0, compat_ptr(a1), a[2], a[3],
936 ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]);