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(VERIFY_READ, 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)
391 struct socket *sock = sockfd_lookup(fd, &err);
394 err = security_socket_setsockopt(sock, level, optname);
400 if (level == SOL_SOCKET)
401 err = compat_sock_setsockopt(sock, level,
402 optname, optval, optlen);
403 else if (sock->ops->compat_setsockopt)
404 err = sock->ops->compat_setsockopt(sock, level,
405 optname, optval, optlen);
407 err = sock->ops->setsockopt(sock, level,
408 optname, optval, optlen);
414 COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname,
415 char __user *, optval, unsigned int, optlen)
417 return __compat_sys_setsockopt(fd, level, optname, optval, optlen);
420 static int do_get_sock_timeout(struct socket *sock, int level, int optname,
421 char __user *optval, int __user *optlen)
423 struct compat_timeval __user *up;
424 struct timeval ktime;
428 up = (struct compat_timeval __user *) optval;
429 if (get_user(len, optlen))
431 if (len < sizeof(*up))
436 err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len);
440 if (put_user(sizeof(*up), optlen) ||
441 !access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
442 __put_user(ktime.tv_sec, &up->tv_sec) ||
443 __put_user(ktime.tv_usec, &up->tv_usec))
449 static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
450 char __user *optval, int __user *optlen)
452 if (!COMPAT_USE_64BIT_TIME &&
453 (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
454 return do_get_sock_timeout(sock, level, optname, optval, optlen);
455 return sock_getsockopt(sock, level, optname, optval, optlen);
458 int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
460 struct compat_timeval __user *ctv;
464 if (COMPAT_USE_64BIT_TIME)
465 return sock_get_timestamp(sk, userstamp);
467 ctv = (struct compat_timeval __user *) userstamp;
469 if (!sock_flag(sk, SOCK_TIMESTAMP))
470 sock_enable_timestamp(sk, SOCK_TIMESTAMP);
471 tv = ktime_to_timeval(sk->sk_stamp);
474 if (tv.tv_sec == 0) {
475 sk->sk_stamp = ktime_get_real();
476 tv = ktime_to_timeval(sk->sk_stamp);
479 if (put_user(tv.tv_sec, &ctv->tv_sec) ||
480 put_user(tv.tv_usec, &ctv->tv_usec))
484 EXPORT_SYMBOL(compat_sock_get_timestamp);
486 int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
488 struct compat_timespec __user *ctv;
492 if (COMPAT_USE_64BIT_TIME)
493 return sock_get_timestampns (sk, userstamp);
495 ctv = (struct compat_timespec __user *) userstamp;
497 if (!sock_flag(sk, SOCK_TIMESTAMP))
498 sock_enable_timestamp(sk, SOCK_TIMESTAMP);
499 ts = ktime_to_timespec(sk->sk_stamp);
502 if (ts.tv_sec == 0) {
503 sk->sk_stamp = ktime_get_real();
504 ts = ktime_to_timespec(sk->sk_stamp);
507 if (put_user(ts.tv_sec, &ctv->tv_sec) ||
508 put_user(ts.tv_nsec, &ctv->tv_nsec))
512 EXPORT_SYMBOL(compat_sock_get_timestampns);
514 static int __compat_sys_getsockopt(int fd, int level, int optname,
519 struct socket *sock = sockfd_lookup(fd, &err);
522 err = security_socket_getsockopt(sock, level, optname);
528 if (level == SOL_SOCKET)
529 err = compat_sock_getsockopt(sock, level,
530 optname, optval, optlen);
531 else if (sock->ops->compat_getsockopt)
532 err = sock->ops->compat_getsockopt(sock, level,
533 optname, optval, optlen);
535 err = sock->ops->getsockopt(sock, level,
536 optname, optval, optlen);
542 COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname,
543 char __user *, optval, int __user *, optlen)
545 return __compat_sys_getsockopt(fd, level, optname, optval, optlen);
548 struct compat_group_req {
550 struct __kernel_sockaddr_storage gr_group
554 struct compat_group_source_req {
556 struct __kernel_sockaddr_storage gsr_group
558 struct __kernel_sockaddr_storage gsr_source
562 struct compat_group_filter {
564 struct __kernel_sockaddr_storage gf_group
568 struct __kernel_sockaddr_storage gf_slist[1]
572 #define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \
573 sizeof(struct __kernel_sockaddr_storage))
576 int compat_mc_setsockopt(struct sock *sock, int level, int optname,
577 char __user *optval, unsigned int optlen,
578 int (*setsockopt)(struct sock *, int, int, char __user *, unsigned int))
580 char __user *koptval = optval;
581 int koptlen = optlen;
584 case MCAST_JOIN_GROUP:
585 case MCAST_LEAVE_GROUP:
587 struct compat_group_req __user *gr32 = (void *)optval;
588 struct group_req __user *kgr =
589 compat_alloc_user_space(sizeof(struct group_req));
592 if (!access_ok(VERIFY_READ, gr32, sizeof(*gr32)) ||
593 !access_ok(VERIFY_WRITE, kgr, sizeof(struct group_req)) ||
594 __get_user(interface, &gr32->gr_interface) ||
595 __put_user(interface, &kgr->gr_interface) ||
596 copy_in_user(&kgr->gr_group, &gr32->gr_group,
597 sizeof(kgr->gr_group)))
599 koptval = (char __user *)kgr;
600 koptlen = sizeof(struct group_req);
603 case MCAST_JOIN_SOURCE_GROUP:
604 case MCAST_LEAVE_SOURCE_GROUP:
605 case MCAST_BLOCK_SOURCE:
606 case MCAST_UNBLOCK_SOURCE:
608 struct compat_group_source_req __user *gsr32 = (void *)optval;
609 struct group_source_req __user *kgsr = compat_alloc_user_space(
610 sizeof(struct group_source_req));
613 if (!access_ok(VERIFY_READ, gsr32, sizeof(*gsr32)) ||
614 !access_ok(VERIFY_WRITE, kgsr,
615 sizeof(struct group_source_req)) ||
616 __get_user(interface, &gsr32->gsr_interface) ||
617 __put_user(interface, &kgsr->gsr_interface) ||
618 copy_in_user(&kgsr->gsr_group, &gsr32->gsr_group,
619 sizeof(kgsr->gsr_group)) ||
620 copy_in_user(&kgsr->gsr_source, &gsr32->gsr_source,
621 sizeof(kgsr->gsr_source)))
623 koptval = (char __user *)kgsr;
624 koptlen = sizeof(struct group_source_req);
629 struct compat_group_filter __user *gf32 = (void *)optval;
630 struct group_filter __user *kgf;
631 u32 interface, fmode, numsrc;
633 if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) ||
634 __get_user(interface, &gf32->gf_interface) ||
635 __get_user(fmode, &gf32->gf_fmode) ||
636 __get_user(numsrc, &gf32->gf_numsrc))
638 koptlen = optlen + sizeof(struct group_filter) -
639 sizeof(struct compat_group_filter);
640 if (koptlen < GROUP_FILTER_SIZE(numsrc))
642 kgf = compat_alloc_user_space(koptlen);
643 if (!access_ok(VERIFY_WRITE, kgf, koptlen) ||
644 __put_user(interface, &kgf->gf_interface) ||
645 __put_user(fmode, &kgf->gf_fmode) ||
646 __put_user(numsrc, &kgf->gf_numsrc) ||
647 copy_in_user(&kgf->gf_group, &gf32->gf_group,
648 sizeof(kgf->gf_group)) ||
649 (numsrc && copy_in_user(kgf->gf_slist, gf32->gf_slist,
650 numsrc * sizeof(kgf->gf_slist[0]))))
652 koptval = (char __user *)kgf;
659 return setsockopt(sock, level, optname, koptval, koptlen);
661 EXPORT_SYMBOL(compat_mc_setsockopt);
663 int compat_mc_getsockopt(struct sock *sock, int level, int optname,
664 char __user *optval, int __user *optlen,
665 int (*getsockopt)(struct sock *, int, int, char __user *, int __user *))
667 struct compat_group_filter __user *gf32 = (void *)optval;
668 struct group_filter __user *kgf;
670 u32 interface, fmode, numsrc;
673 if (optname != MCAST_MSFILTER)
674 return getsockopt(sock, level, optname, optval, optlen);
676 koptlen = compat_alloc_user_space(sizeof(*koptlen));
677 if (!access_ok(VERIFY_READ, optlen, sizeof(*optlen)) ||
678 __get_user(ulen, optlen))
681 /* adjust len for pad */
682 klen = ulen + sizeof(*kgf) - sizeof(*gf32);
684 if (klen < GROUP_FILTER_SIZE(0))
687 if (!access_ok(VERIFY_WRITE, koptlen, sizeof(*koptlen)) ||
688 __put_user(klen, koptlen))
691 /* have to allow space for previous compat_alloc_user_space, too */
692 kgf = compat_alloc_user_space(klen+sizeof(*optlen));
694 if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) ||
695 __get_user(interface, &gf32->gf_interface) ||
696 __get_user(fmode, &gf32->gf_fmode) ||
697 __get_user(numsrc, &gf32->gf_numsrc) ||
698 __put_user(interface, &kgf->gf_interface) ||
699 __put_user(fmode, &kgf->gf_fmode) ||
700 __put_user(numsrc, &kgf->gf_numsrc) ||
701 copy_in_user(&kgf->gf_group, &gf32->gf_group, sizeof(kgf->gf_group)))
704 err = getsockopt(sock, level, optname, (char __user *)kgf, koptlen);
708 if (!access_ok(VERIFY_READ, koptlen, sizeof(*koptlen)) ||
709 __get_user(klen, koptlen))
712 ulen = klen - (sizeof(*kgf)-sizeof(*gf32));
714 if (!access_ok(VERIFY_WRITE, optlen, sizeof(*optlen)) ||
715 __put_user(ulen, optlen))
718 if (!access_ok(VERIFY_READ, kgf, klen) ||
719 !access_ok(VERIFY_WRITE, gf32, ulen) ||
720 __get_user(interface, &kgf->gf_interface) ||
721 __get_user(fmode, &kgf->gf_fmode) ||
722 __get_user(numsrc, &kgf->gf_numsrc) ||
723 __put_user(interface, &gf32->gf_interface) ||
724 __put_user(fmode, &gf32->gf_fmode) ||
725 __put_user(numsrc, &gf32->gf_numsrc))
730 klen -= GROUP_FILTER_SIZE(0);
731 copylen = numsrc * sizeof(gf32->gf_slist[0]);
734 if (copy_in_user(gf32->gf_slist, kgf->gf_slist, copylen))
739 EXPORT_SYMBOL(compat_mc_getsockopt);
742 /* Argument list sizes for compat_sys_socketcall */
743 #define AL(x) ((x) * sizeof(u32))
744 static unsigned char nas[21] = {
745 AL(0), AL(3), AL(3), AL(3), AL(2), AL(3),
746 AL(3), AL(3), AL(4), AL(4), AL(4), AL(6),
747 AL(6), AL(2), AL(5), AL(5), AL(3), AL(3),
752 static inline long __compat_sys_sendmsg(int fd,
753 struct compat_msghdr __user *msg,
756 return __sys_sendmsg(fd, (struct user_msghdr __user *)msg,
757 flags | MSG_CMSG_COMPAT, false);
760 COMPAT_SYSCALL_DEFINE3(sendmsg, int, fd, struct compat_msghdr __user *, msg,
763 return __compat_sys_sendmsg(fd, msg, flags);
766 static inline long __compat_sys_sendmmsg(int fd,
767 struct compat_mmsghdr __user *mmsg,
768 unsigned int vlen, unsigned int flags)
770 return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
771 flags | MSG_CMSG_COMPAT, false);
774 COMPAT_SYSCALL_DEFINE4(sendmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
775 unsigned int, vlen, unsigned int, flags)
777 return __compat_sys_sendmmsg(fd, mmsg, vlen, flags);
780 static inline long __compat_sys_recvmsg(int fd,
781 struct compat_msghdr __user *msg,
784 return __sys_recvmsg(fd, (struct user_msghdr __user *)msg,
785 flags | MSG_CMSG_COMPAT, false);
788 COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg,
791 return __compat_sys_recvmsg(fd, msg, flags);
794 static inline long __compat_sys_recvfrom(int fd, void __user *buf,
795 compat_size_t len, unsigned int flags,
796 struct sockaddr __user *addr,
799 return __sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr,
803 COMPAT_SYSCALL_DEFINE4(recv, int, fd, void __user *, buf, compat_size_t, len, unsigned int, flags)
805 return __compat_sys_recvfrom(fd, buf, len, flags, NULL, NULL);
808 COMPAT_SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, buf, compat_size_t, len,
809 unsigned int, flags, struct sockaddr __user *, addr,
810 int __user *, addrlen)
812 return __compat_sys_recvfrom(fd, buf, len, flags, addr, addrlen);
815 static int __compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
816 unsigned int vlen, unsigned int flags,
817 struct compat_timespec __user *timeout)
820 struct timespec ktspec;
823 return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
824 flags | MSG_CMSG_COMPAT, NULL);
826 if (compat_get_timespec(&ktspec, timeout))
829 datagrams = __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
830 flags | MSG_CMSG_COMPAT, &ktspec);
831 if (datagrams > 0 && compat_put_timespec(&ktspec, timeout))
837 COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
838 unsigned int, vlen, unsigned int, flags,
839 struct compat_timespec __user *, timeout)
841 return __compat_sys_recvmmsg(fd, mmsg, vlen, flags, timeout);
844 COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
851 if (call < SYS_SOCKET || call > SYS_SENDMMSG)
857 if (copy_from_user(a, args, len))
860 ret = audit_socketcall_compat(len / sizeof(a[0]), a);
869 ret = __sys_socket(a0, a1, a[2]);
872 ret = __sys_bind(a0, compat_ptr(a1), a[2]);
875 ret = __sys_connect(a0, compat_ptr(a1), a[2]);
878 ret = __sys_listen(a0, a1);
881 ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0);
883 case SYS_GETSOCKNAME:
884 ret = __sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2]));
886 case SYS_GETPEERNAME:
887 ret = __sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2]));
890 ret = __sys_socketpair(a0, a1, a[2], compat_ptr(a[3]));
893 ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3], NULL, 0);
896 ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3],
897 compat_ptr(a[4]), a[5]);
900 ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3],
904 ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3],
909 ret = __sys_shutdown(a0, a1);
912 ret = __compat_sys_setsockopt(a0, a1, a[2],
913 compat_ptr(a[3]), a[4]);
916 ret = __compat_sys_getsockopt(a0, a1, a[2],
921 ret = __compat_sys_sendmsg(a0, compat_ptr(a1), a[2]);
924 ret = __compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]);
927 ret = __compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
930 ret = __compat_sys_recvmmsg(a0, compat_ptr(a1), a[2], a[3],
934 ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]);