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>
16 #include <linux/types.h>
17 #include <linux/file.h>
18 #include <linux/icmpv6.h>
19 #include <linux/socket.h>
20 #include <linux/syscalls.h>
21 #include <linux/filter.h>
22 #include <linux/compat.h>
23 #include <linux/security.h>
29 #include <asm/uaccess.h>
30 #include <net/compat.h>
32 static inline int iov_from_user_compat_to_kern(struct iovec *kiov,
33 struct compat_iovec __user *uiov32,
42 if (get_user(len, &uiov32->iov_len) ||
43 get_user(buf, &uiov32->iov_base)) {
48 kiov->iov_base = compat_ptr(buf);
49 kiov->iov_len = (__kernel_size_t) len;
57 int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg)
59 compat_uptr_t tmp1, tmp2, tmp3;
61 if (!access_ok(VERIFY_READ, umsg, sizeof(*umsg)) ||
62 __get_user(tmp1, &umsg->msg_name) ||
63 __get_user(kmsg->msg_namelen, &umsg->msg_namelen) ||
64 __get_user(tmp2, &umsg->msg_iov) ||
65 __get_user(kmsg->msg_iovlen, &umsg->msg_iovlen) ||
66 __get_user(tmp3, &umsg->msg_control) ||
67 __get_user(kmsg->msg_controllen, &umsg->msg_controllen) ||
68 __get_user(kmsg->msg_flags, &umsg->msg_flags))
70 kmsg->msg_name = compat_ptr(tmp1);
71 kmsg->msg_iov = compat_ptr(tmp2);
72 kmsg->msg_control = compat_ptr(tmp3);
76 /* I've named the args so it is easy to tell whose space the pointers are in. */
77 int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
78 struct sockaddr *kern_address, int mode)
82 if (kern_msg->msg_namelen) {
83 if (mode==VERIFY_READ) {
84 int err = move_addr_to_kernel(kern_msg->msg_name,
85 kern_msg->msg_namelen,
90 kern_msg->msg_name = kern_address;
92 kern_msg->msg_name = NULL;
94 tot_len = iov_from_user_compat_to_kern(kern_iov,
95 (struct compat_iovec __user *)kern_msg->msg_iov,
96 kern_msg->msg_iovlen);
98 kern_msg->msg_iov = kern_iov;
104 #define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32))
106 #define CMSG_COMPAT_DATA(cmsg) \
107 ((void __user *)((char __user *)(cmsg) + CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr))))
108 #define CMSG_COMPAT_SPACE(len) \
109 (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + CMSG_COMPAT_ALIGN(len))
110 #define CMSG_COMPAT_LEN(len) \
111 (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + (len))
113 #define CMSG_COMPAT_FIRSTHDR(msg) \
114 (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \
115 (struct compat_cmsghdr __user *)((msg)->msg_control) : \
116 (struct compat_cmsghdr __user *)NULL)
118 #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \
119 ((ucmlen) >= sizeof(struct compat_cmsghdr) && \
120 (ucmlen) <= (unsigned long) \
121 ((mhdr)->msg_controllen - \
122 ((char *)(ucmsg) - (char *)(mhdr)->msg_control)))
124 static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg,
125 struct compat_cmsghdr __user *cmsg, int cmsg_len)
127 char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len);
128 if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) >
131 return (struct compat_cmsghdr __user *)ptr;
134 /* There is a lot of hair here because the alignment rules (and
135 * thus placement) of cmsg headers and length are different for
136 * 32-bit apps. -DaveM
138 int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk,
139 unsigned char *stackbuf, int stackbuf_size)
141 struct compat_cmsghdr __user *ucmsg;
142 struct cmsghdr *kcmsg, *kcmsg_base;
143 compat_size_t ucmlen;
144 __kernel_size_t kcmlen, tmp;
148 kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;
149 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
150 while (ucmsg != NULL) {
151 if (get_user(ucmlen, &ucmsg->cmsg_len))
155 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
158 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) +
159 CMSG_ALIGN(sizeof(struct cmsghdr)));
160 tmp = CMSG_ALIGN(tmp);
162 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
167 /* The kcmlen holds the 64-bit version of the control length.
168 * It may not be modified as we do not stick it into the kmsg
169 * until we have successfully copied over all of the data
172 if (kcmlen > stackbuf_size)
173 kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL);
177 /* Now copy them over neatly. */
178 memset(kcmsg, 0, kcmlen);
179 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
180 while (ucmsg != NULL) {
181 if (__get_user(ucmlen, &ucmsg->cmsg_len))
183 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
185 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) +
186 CMSG_ALIGN(sizeof(struct cmsghdr)));
187 if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp))
189 kcmsg->cmsg_len = tmp;
190 tmp = CMSG_ALIGN(tmp);
191 if (__get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level) ||
192 __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type) ||
193 copy_from_user(CMSG_DATA(kcmsg),
194 CMSG_COMPAT_DATA(ucmsg),
195 (ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg)))))
199 kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp);
200 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
203 /* Ok, looks like we made it. Hook it up and return success. */
204 kmsg->msg_control = kcmsg_base;
205 kmsg->msg_controllen = kcmlen;
211 if (kcmsg_base != (struct cmsghdr *)stackbuf)
212 sock_kfree_s(sk, kcmsg_base, kcmlen);
216 int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
218 struct compat_timeval ctv;
219 struct compat_timespec cts;
220 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
221 struct compat_cmsghdr cmhdr;
224 if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
225 kmsg->msg_flags |= MSG_CTRUNC;
226 return 0; /* XXX: return error? check spec. */
229 if (level == SOL_SOCKET && type == SO_TIMESTAMP) {
230 struct timeval *tv = (struct timeval *)data;
231 ctv.tv_sec = tv->tv_sec;
232 ctv.tv_usec = tv->tv_usec;
236 if (level == SOL_SOCKET && type == SO_TIMESTAMPNS) {
237 struct timespec *ts = (struct timespec *)data;
238 cts.tv_sec = ts->tv_sec;
239 cts.tv_nsec = ts->tv_nsec;
244 cmlen = CMSG_COMPAT_LEN(len);
245 if (kmsg->msg_controllen < cmlen) {
246 kmsg->msg_flags |= MSG_CTRUNC;
247 cmlen = kmsg->msg_controllen;
249 cmhdr.cmsg_level = level;
250 cmhdr.cmsg_type = type;
251 cmhdr.cmsg_len = cmlen;
253 if (copy_to_user(cm, &cmhdr, sizeof cmhdr))
255 if (copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr)))
257 cmlen = CMSG_COMPAT_SPACE(len);
258 if (kmsg->msg_controllen < cmlen)
259 cmlen = kmsg->msg_controllen;
260 kmsg->msg_control += cmlen;
261 kmsg->msg_controllen -= cmlen;
265 void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
267 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
268 int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int);
269 int fdnum = scm->fp->count;
270 struct file **fp = scm->fp->fp;
277 for (i = 0, cmfptr = (int __user *) CMSG_COMPAT_DATA(cm); i < fdmax; i++, cmfptr++) {
279 err = security_file_receive(fp[i]);
282 err = get_unused_fd_flags(MSG_CMSG_CLOEXEC & kmsg->msg_flags
287 err = put_user(new_fd, cmfptr);
289 put_unused_fd(new_fd);
292 /* Bump the usage count and install the file. */
294 fd_install(new_fd, 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.
321 * A struct sock_filter is architecture independent.
323 struct compat_sock_fprog {
325 compat_uptr_t filter; /* struct sock_filter * */
328 static int do_set_attach_filter(struct socket *sock, int level, int optname,
329 char __user *optval, int optlen)
331 struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval;
332 struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog));
336 if (!access_ok(VERIFY_READ, fprog32, sizeof(*fprog32)) ||
337 !access_ok(VERIFY_WRITE, kfprog, sizeof(struct sock_fprog)) ||
338 __get_user(len, &fprog32->len) ||
339 __get_user(ptr, &fprog32->filter) ||
340 __put_user(len, &kfprog->len) ||
341 __put_user(compat_ptr(ptr), &kfprog->filter))
344 return sock_setsockopt(sock, level, optname, (char __user *)kfprog,
345 sizeof(struct sock_fprog));
348 static int do_set_sock_timeout(struct socket *sock, int level,
349 int optname, char __user *optval, int optlen)
351 struct compat_timeval __user *up = (struct compat_timeval __user *) optval;
352 struct timeval ktime;
356 if (optlen < sizeof(*up))
358 if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
359 __get_user(ktime.tv_sec, &up->tv_sec) ||
360 __get_user(ktime.tv_usec, &up->tv_usec))
364 err = sock_setsockopt(sock, level, optname, (char *) &ktime, sizeof(ktime));
370 static int compat_sock_setsockopt(struct socket *sock, int level, int optname,
371 char __user *optval, int optlen)
373 if (optname == SO_ATTACH_FILTER)
374 return do_set_attach_filter(sock, level, optname,
376 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
377 return do_set_sock_timeout(sock, level, optname, optval, optlen);
379 return sock_setsockopt(sock, level, optname, optval, optlen);
382 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
383 char __user *optval, int optlen)
391 if ((sock = sockfd_lookup(fd, &err))!=NULL)
393 err = security_socket_setsockopt(sock,level,optname);
399 if (level == SOL_SOCKET)
400 err = compat_sock_setsockopt(sock, level,
401 optname, optval, optlen);
402 else if (sock->ops->compat_setsockopt)
403 err = sock->ops->compat_setsockopt(sock, level,
404 optname, optval, optlen);
406 err = sock->ops->setsockopt(sock, level,
407 optname, optval, optlen);
413 static int do_get_sock_timeout(struct socket *sock, int level, int optname,
414 char __user *optval, int __user *optlen)
416 struct compat_timeval __user *up;
417 struct timeval ktime;
421 up = (struct compat_timeval __user *) optval;
422 if (get_user(len, optlen))
424 if (len < sizeof(*up))
429 err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len);
433 if (put_user(sizeof(*up), optlen) ||
434 !access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
435 __put_user(ktime.tv_sec, &up->tv_sec) ||
436 __put_user(ktime.tv_usec, &up->tv_usec))
442 static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
443 char __user *optval, int __user *optlen)
445 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
446 return do_get_sock_timeout(sock, level, optname, optval, optlen);
447 return sock_getsockopt(sock, level, optname, optval, optlen);
450 int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
452 struct compat_timeval __user *ctv =
453 (struct compat_timeval __user*) userstamp;
457 if (!sock_flag(sk, SOCK_TIMESTAMP))
458 sock_enable_timestamp(sk);
459 tv = ktime_to_timeval(sk->sk_stamp);
462 if (tv.tv_sec == 0) {
463 sk->sk_stamp = ktime_get_real();
464 tv = ktime_to_timeval(sk->sk_stamp);
467 if (put_user(tv.tv_sec, &ctv->tv_sec) ||
468 put_user(tv.tv_usec, &ctv->tv_usec))
472 EXPORT_SYMBOL(compat_sock_get_timestamp);
474 int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
476 struct compat_timespec __user *ctv =
477 (struct compat_timespec __user*) userstamp;
481 if (!sock_flag(sk, SOCK_TIMESTAMP))
482 sock_enable_timestamp(sk);
483 ts = ktime_to_timespec(sk->sk_stamp);
486 if (ts.tv_sec == 0) {
487 sk->sk_stamp = ktime_get_real();
488 ts = ktime_to_timespec(sk->sk_stamp);
491 if (put_user(ts.tv_sec, &ctv->tv_sec) ||
492 put_user(ts.tv_nsec, &ctv->tv_nsec))
496 EXPORT_SYMBOL(compat_sock_get_timestampns);
498 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
499 char __user *optval, int __user *optlen)
504 if ((sock = sockfd_lookup(fd, &err))!=NULL)
506 err = security_socket_getsockopt(sock, level,
513 if (level == SOL_SOCKET)
514 err = compat_sock_getsockopt(sock, level,
515 optname, optval, optlen);
516 else if (sock->ops->compat_getsockopt)
517 err = sock->ops->compat_getsockopt(sock, level,
518 optname, optval, optlen);
520 err = sock->ops->getsockopt(sock, level,
521 optname, optval, optlen);
527 struct compat_group_req {
529 struct __kernel_sockaddr_storage gr_group
530 __attribute__ ((aligned(4)));
531 } __attribute__ ((packed));
533 struct compat_group_source_req {
535 struct __kernel_sockaddr_storage gsr_group
536 __attribute__ ((aligned(4)));
537 struct __kernel_sockaddr_storage gsr_source
538 __attribute__ ((aligned(4)));
539 } __attribute__ ((packed));
541 struct compat_group_filter {
543 struct __kernel_sockaddr_storage gf_group
544 __attribute__ ((aligned(4)));
547 struct __kernel_sockaddr_storage gf_slist[1]
548 __attribute__ ((aligned(4)));
549 } __attribute__ ((packed));
551 #define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \
552 sizeof(struct __kernel_sockaddr_storage))
555 int compat_mc_setsockopt(struct sock *sock, int level, int optname,
556 char __user *optval, int optlen,
557 int (*setsockopt)(struct sock *,int,int,char __user *,int))
559 char __user *koptval = optval;
560 int koptlen = optlen;
563 case MCAST_JOIN_GROUP:
564 case MCAST_LEAVE_GROUP:
566 struct compat_group_req __user *gr32 = (void *)optval;
567 struct group_req __user *kgr =
568 compat_alloc_user_space(sizeof(struct group_req));
571 if (!access_ok(VERIFY_READ, gr32, sizeof(*gr32)) ||
572 !access_ok(VERIFY_WRITE, kgr, sizeof(struct group_req)) ||
573 __get_user(interface, &gr32->gr_interface) ||
574 __put_user(interface, &kgr->gr_interface) ||
575 copy_in_user(&kgr->gr_group, &gr32->gr_group,
576 sizeof(kgr->gr_group)))
578 koptval = (char __user *)kgr;
579 koptlen = sizeof(struct group_req);
582 case MCAST_JOIN_SOURCE_GROUP:
583 case MCAST_LEAVE_SOURCE_GROUP:
584 case MCAST_BLOCK_SOURCE:
585 case MCAST_UNBLOCK_SOURCE:
587 struct compat_group_source_req __user *gsr32 = (void *)optval;
588 struct group_source_req __user *kgsr = compat_alloc_user_space(
589 sizeof(struct group_source_req));
592 if (!access_ok(VERIFY_READ, gsr32, sizeof(*gsr32)) ||
593 !access_ok(VERIFY_WRITE, kgsr,
594 sizeof(struct group_source_req)) ||
595 __get_user(interface, &gsr32->gsr_interface) ||
596 __put_user(interface, &kgsr->gsr_interface) ||
597 copy_in_user(&kgsr->gsr_group, &gsr32->gsr_group,
598 sizeof(kgsr->gsr_group)) ||
599 copy_in_user(&kgsr->gsr_source, &gsr32->gsr_source,
600 sizeof(kgsr->gsr_source)))
602 koptval = (char __user *)kgsr;
603 koptlen = sizeof(struct group_source_req);
608 struct compat_group_filter __user *gf32 = (void *)optval;
609 struct group_filter __user *kgf;
610 u32 interface, fmode, numsrc;
612 if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) ||
613 __get_user(interface, &gf32->gf_interface) ||
614 __get_user(fmode, &gf32->gf_fmode) ||
615 __get_user(numsrc, &gf32->gf_numsrc))
617 koptlen = optlen + sizeof(struct group_filter) -
618 sizeof(struct compat_group_filter);
619 if (koptlen < GROUP_FILTER_SIZE(numsrc))
621 kgf = compat_alloc_user_space(koptlen);
622 if (!access_ok(VERIFY_WRITE, kgf, koptlen) ||
623 __put_user(interface, &kgf->gf_interface) ||
624 __put_user(fmode, &kgf->gf_fmode) ||
625 __put_user(numsrc, &kgf->gf_numsrc) ||
626 copy_in_user(&kgf->gf_group, &gf32->gf_group,
627 sizeof(kgf->gf_group)) ||
628 (numsrc && copy_in_user(kgf->gf_slist, gf32->gf_slist,
629 numsrc * sizeof(kgf->gf_slist[0]))))
631 koptval = (char __user *)kgf;
638 return setsockopt(sock, level, optname, koptval, koptlen);
641 EXPORT_SYMBOL(compat_mc_setsockopt);
643 int compat_mc_getsockopt(struct sock *sock, int level, int optname,
644 char __user *optval, int __user *optlen,
645 int (*getsockopt)(struct sock *,int,int,char __user *,int __user *))
647 struct compat_group_filter __user *gf32 = (void *)optval;
648 struct group_filter __user *kgf;
650 u32 interface, fmode, numsrc;
653 if (optname != MCAST_MSFILTER)
654 return getsockopt(sock, level, optname, optval, optlen);
656 koptlen = compat_alloc_user_space(sizeof(*koptlen));
657 if (!access_ok(VERIFY_READ, optlen, sizeof(*optlen)) ||
658 __get_user(ulen, optlen))
661 /* adjust len for pad */
662 klen = ulen + sizeof(*kgf) - sizeof(*gf32);
664 if (klen < GROUP_FILTER_SIZE(0))
667 if (!access_ok(VERIFY_WRITE, koptlen, sizeof(*koptlen)) ||
668 __put_user(klen, koptlen))
671 /* have to allow space for previous compat_alloc_user_space, too */
672 kgf = compat_alloc_user_space(klen+sizeof(*optlen));
674 if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) ||
675 __get_user(interface, &gf32->gf_interface) ||
676 __get_user(fmode, &gf32->gf_fmode) ||
677 __get_user(numsrc, &gf32->gf_numsrc) ||
678 __put_user(interface, &kgf->gf_interface) ||
679 __put_user(fmode, &kgf->gf_fmode) ||
680 __put_user(numsrc, &kgf->gf_numsrc) ||
681 copy_in_user(&kgf->gf_group,&gf32->gf_group,sizeof(kgf->gf_group)))
684 err = getsockopt(sock, level, optname, (char __user *)kgf, koptlen);
688 if (!access_ok(VERIFY_READ, koptlen, sizeof(*koptlen)) ||
689 __get_user(klen, koptlen))
692 ulen = klen - (sizeof(*kgf)-sizeof(*gf32));
694 if (!access_ok(VERIFY_WRITE, optlen, sizeof(*optlen)) ||
695 __put_user(ulen, optlen))
698 if (!access_ok(VERIFY_READ, kgf, klen) ||
699 !access_ok(VERIFY_WRITE, gf32, ulen) ||
700 __get_user(interface, &kgf->gf_interface) ||
701 __get_user(fmode, &kgf->gf_fmode) ||
702 __get_user(numsrc, &kgf->gf_numsrc) ||
703 __put_user(interface, &gf32->gf_interface) ||
704 __put_user(fmode, &gf32->gf_fmode) ||
705 __put_user(numsrc, &gf32->gf_numsrc))
710 klen -= GROUP_FILTER_SIZE(0);
711 copylen = numsrc * sizeof(gf32->gf_slist[0]);
714 if (copy_in_user(gf32->gf_slist, kgf->gf_slist, copylen))
720 EXPORT_SYMBOL(compat_mc_getsockopt);
723 /* Argument list sizes for compat_sys_socketcall */
724 #define AL(x) ((x) * sizeof(u32))
725 static unsigned char nas[19]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
726 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
727 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3),
731 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, unsigned flags)
733 return sys_sendmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
736 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, unsigned int flags)
738 return sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
741 asmlinkage long compat_sys_paccept(int fd, struct sockaddr __user *upeer_sockaddr,
742 int __user *upeer_addrlen,
743 const compat_sigset_t __user *sigmask,
744 compat_size_t sigsetsize, int flags)
746 compat_sigset_t ss32;
747 sigset_t ksigmask, sigsaved;
751 if (sigsetsize != sizeof(compat_sigset_t))
753 if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
755 sigset_from_compat(&ksigmask, &ss32);
757 sigdelsetmask(&ksigmask, sigmask(SIGKILL)|sigmask(SIGSTOP));
758 sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
761 ret = do_accept(fd, upeer_sockaddr, upeer_addrlen, flags);
763 if (ret == -ERESTARTNOHAND) {
765 * Don't restore the signal mask yet. Let do_signal() deliver
766 * the signal on the way back to userspace, before the signal
770 memcpy(¤t->saved_sigmask, &sigsaved,
772 set_restore_sigmask();
775 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
780 asmlinkage long compat_sys_socketcall(int call, u32 __user *args)
786 if (call < SYS_SOCKET || call > SYS_PACCEPT)
788 if (copy_from_user(a, args, nas[call]))
795 ret = sys_socket(a0, a1, a[2]);
798 ret = sys_bind(a0, compat_ptr(a1), a[2]);
801 ret = sys_connect(a0, compat_ptr(a1), a[2]);
804 ret = sys_listen(a0, a1);
807 ret = do_accept(a0, compat_ptr(a1), compat_ptr(a[2]), 0);
809 case SYS_GETSOCKNAME:
810 ret = sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2]));
812 case SYS_GETPEERNAME:
813 ret = sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2]));
816 ret = sys_socketpair(a0, a1, a[2], compat_ptr(a[3]));
819 ret = sys_send(a0, compat_ptr(a1), a[2], a[3]);
822 ret = sys_sendto(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), a[5]);
825 ret = sys_recv(a0, compat_ptr(a1), a[2], a[3]);
828 ret = sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), compat_ptr(a[5]));
831 ret = sys_shutdown(a0,a1);
834 ret = compat_sys_setsockopt(a0, a1, a[2],
835 compat_ptr(a[3]), a[4]);
838 ret = compat_sys_getsockopt(a0, a1, a[2],
839 compat_ptr(a[3]), compat_ptr(a[4]));
842 ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]);
845 ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
848 ret = compat_sys_paccept(a0, compat_ptr(a1), compat_ptr(a[2]),
849 compat_ptr(a[3]), a[4], a[5]);