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/export.h>
31 #include <asm/uaccess.h>
32 #include <net/compat.h>
34 static inline int iov_from_user_compat_to_kern(struct iovec *kiov,
35 struct compat_iovec __user *uiov32,
44 if (get_user(len, &uiov32->iov_len) ||
45 get_user(buf, &uiov32->iov_base))
48 if (len > INT_MAX - tot_len)
49 len = INT_MAX - tot_len;
52 kiov->iov_base = compat_ptr(buf);
53 kiov->iov_len = (__kernel_size_t) len;
61 int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg)
63 compat_uptr_t tmp1, tmp2, tmp3;
65 if (!access_ok(VERIFY_READ, umsg, sizeof(*umsg)) ||
66 __get_user(tmp1, &umsg->msg_name) ||
67 __get_user(kmsg->msg_namelen, &umsg->msg_namelen) ||
68 __get_user(tmp2, &umsg->msg_iov) ||
69 __get_user(kmsg->msg_iovlen, &umsg->msg_iovlen) ||
70 __get_user(tmp3, &umsg->msg_control) ||
71 __get_user(kmsg->msg_controllen, &umsg->msg_controllen) ||
72 __get_user(kmsg->msg_flags, &umsg->msg_flags))
76 kmsg->msg_namelen = 0;
78 if (kmsg->msg_namelen < 0)
81 if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))
82 kmsg->msg_namelen = sizeof(struct sockaddr_storage);
83 kmsg->msg_name = compat_ptr(tmp1);
84 kmsg->msg_iov = compat_ptr(tmp2);
85 kmsg->msg_control = compat_ptr(tmp3);
89 /* I've named the args so it is easy to tell whose space the pointers are in. */
90 int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
91 struct sockaddr *kern_address, int mode)
95 if (kern_msg->msg_name && kern_msg->msg_namelen) {
96 if (mode == VERIFY_READ) {
97 int err = move_addr_to_kernel(kern_msg->msg_name,
98 kern_msg->msg_namelen,
103 kern_msg->msg_name = kern_address;
105 kern_msg->msg_name = NULL;
106 kern_msg->msg_namelen = 0;
109 tot_len = iov_from_user_compat_to_kern(kern_iov,
110 (struct compat_iovec __user *)kern_msg->msg_iov,
111 kern_msg->msg_iovlen);
113 kern_msg->msg_iov = kern_iov;
119 #define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32))
121 #define CMSG_COMPAT_DATA(cmsg) \
122 ((void __user *)((char __user *)(cmsg) + CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr))))
123 #define CMSG_COMPAT_SPACE(len) \
124 (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + CMSG_COMPAT_ALIGN(len))
125 #define CMSG_COMPAT_LEN(len) \
126 (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + (len))
128 #define CMSG_COMPAT_FIRSTHDR(msg) \
129 (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \
130 (struct compat_cmsghdr __user *)((msg)->msg_control) : \
131 (struct compat_cmsghdr __user *)NULL)
133 #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \
134 ((ucmlen) >= sizeof(struct compat_cmsghdr) && \
135 (ucmlen) <= (unsigned long) \
136 ((mhdr)->msg_controllen - \
137 ((char *)(ucmsg) - (char *)(mhdr)->msg_control)))
139 static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg,
140 struct compat_cmsghdr __user *cmsg, int cmsg_len)
142 char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len);
143 if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) >
146 return (struct compat_cmsghdr __user *)ptr;
149 /* There is a lot of hair here because the alignment rules (and
150 * thus placement) of cmsg headers and length are different for
151 * 32-bit apps. -DaveM
153 int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk,
154 unsigned char *stackbuf, int stackbuf_size)
156 struct compat_cmsghdr __user *ucmsg;
157 struct cmsghdr *kcmsg, *kcmsg_base;
158 compat_size_t ucmlen;
159 __kernel_size_t kcmlen, tmp;
163 kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;
164 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
165 while (ucmsg != NULL) {
166 if (get_user(ucmlen, &ucmsg->cmsg_len))
170 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
173 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) +
174 CMSG_ALIGN(sizeof(struct cmsghdr)));
175 tmp = CMSG_ALIGN(tmp);
177 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
182 /* The kcmlen holds the 64-bit version of the control length.
183 * It may not be modified as we do not stick it into the kmsg
184 * until we have successfully copied over all of the data
187 if (kcmlen > stackbuf_size)
188 kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL);
192 /* Now copy them over neatly. */
193 memset(kcmsg, 0, kcmlen);
194 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
195 while (ucmsg != NULL) {
196 if (__get_user(ucmlen, &ucmsg->cmsg_len))
198 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
200 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) +
201 CMSG_ALIGN(sizeof(struct cmsghdr)));
202 if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp))
204 kcmsg->cmsg_len = tmp;
205 tmp = CMSG_ALIGN(tmp);
206 if (__get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level) ||
207 __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type) ||
208 copy_from_user(CMSG_DATA(kcmsg),
209 CMSG_COMPAT_DATA(ucmsg),
210 (ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg)))))
214 kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp);
215 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
218 /* Ok, looks like we made it. Hook it up and return success. */
219 kmsg->msg_control = kcmsg_base;
220 kmsg->msg_controllen = kcmlen;
226 if (kcmsg_base != (struct cmsghdr *)stackbuf)
227 sock_kfree_s(sk, kcmsg_base, kcmlen);
231 int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
233 struct compat_timeval ctv;
234 struct compat_timespec cts[3];
235 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
236 struct compat_cmsghdr cmhdr;
239 if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
240 kmsg->msg_flags |= MSG_CTRUNC;
241 return 0; /* XXX: return error? check spec. */
244 if (level == SOL_SOCKET && type == SCM_TIMESTAMP) {
245 struct timeval *tv = (struct timeval *)data;
246 ctv.tv_sec = tv->tv_sec;
247 ctv.tv_usec = tv->tv_usec;
251 if (level == SOL_SOCKET &&
252 (type == SCM_TIMESTAMPNS || type == SCM_TIMESTAMPING)) {
253 int count = type == SCM_TIMESTAMPNS ? 1 : 3;
255 struct timespec *ts = (struct timespec *)data;
256 for (i = 0; i < count; i++) {
257 cts[i].tv_sec = ts[i].tv_sec;
258 cts[i].tv_nsec = ts[i].tv_nsec;
261 len = sizeof(cts[0]) * count;
264 cmlen = CMSG_COMPAT_LEN(len);
265 if (kmsg->msg_controllen < cmlen) {
266 kmsg->msg_flags |= MSG_CTRUNC;
267 cmlen = kmsg->msg_controllen;
269 cmhdr.cmsg_level = level;
270 cmhdr.cmsg_type = type;
271 cmhdr.cmsg_len = cmlen;
273 if (copy_to_user(cm, &cmhdr, sizeof cmhdr))
275 if (copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr)))
277 cmlen = CMSG_COMPAT_SPACE(len);
278 if (kmsg->msg_controllen < cmlen)
279 cmlen = kmsg->msg_controllen;
280 kmsg->msg_control += cmlen;
281 kmsg->msg_controllen -= cmlen;
285 void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
287 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
288 int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int);
289 int fdnum = scm->fp->count;
290 struct file **fp = scm->fp->fp;
297 for (i = 0, cmfptr = (int __user *) CMSG_COMPAT_DATA(cm); i < fdmax; i++, cmfptr++) {
299 err = security_file_receive(fp[i]);
302 err = get_unused_fd_flags(MSG_CMSG_CLOEXEC & kmsg->msg_flags
307 err = put_user(new_fd, cmfptr);
309 put_unused_fd(new_fd);
312 /* Bump the usage count and install the file. */
313 fd_install(new_fd, get_file(fp[i]));
317 int cmlen = CMSG_COMPAT_LEN(i * sizeof(int));
318 err = put_user(SOL_SOCKET, &cm->cmsg_level);
320 err = put_user(SCM_RIGHTS, &cm->cmsg_type);
322 err = put_user(cmlen, &cm->cmsg_len);
324 cmlen = CMSG_COMPAT_SPACE(i * sizeof(int));
325 kmsg->msg_control += cmlen;
326 kmsg->msg_controllen -= cmlen;
330 kmsg->msg_flags |= MSG_CTRUNC;
333 * All of the files that fit in the message have had their
334 * usage counts incremented, so we just free the list.
340 * A struct sock_filter is architecture independent.
342 struct compat_sock_fprog {
344 compat_uptr_t filter; /* struct sock_filter * */
347 static int do_set_attach_filter(struct socket *sock, int level, int optname,
348 char __user *optval, unsigned int optlen)
350 struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval;
351 struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog));
355 if (!access_ok(VERIFY_READ, fprog32, sizeof(*fprog32)) ||
356 !access_ok(VERIFY_WRITE, kfprog, sizeof(struct sock_fprog)) ||
357 __get_user(len, &fprog32->len) ||
358 __get_user(ptr, &fprog32->filter) ||
359 __put_user(len, &kfprog->len) ||
360 __put_user(compat_ptr(ptr), &kfprog->filter))
363 return sock_setsockopt(sock, level, optname, (char __user *)kfprog,
364 sizeof(struct sock_fprog));
367 static int do_set_sock_timeout(struct socket *sock, int level,
368 int optname, char __user *optval, unsigned int optlen)
370 struct compat_timeval __user *up = (struct compat_timeval __user *)optval;
371 struct timeval ktime;
375 if (optlen < sizeof(*up))
377 if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
378 __get_user(ktime.tv_sec, &up->tv_sec) ||
379 __get_user(ktime.tv_usec, &up->tv_usec))
383 err = sock_setsockopt(sock, level, optname, (char *)&ktime, sizeof(ktime));
389 static int compat_sock_setsockopt(struct socket *sock, int level, int optname,
390 char __user *optval, unsigned int optlen)
392 if (optname == SO_ATTACH_FILTER)
393 return do_set_attach_filter(sock, level, optname,
395 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
396 return do_set_sock_timeout(sock, level, optname, optval, optlen);
398 return sock_setsockopt(sock, level, optname, optval, optlen);
401 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
402 char __user *optval, unsigned int optlen)
405 struct socket *sock = sockfd_lookup(fd, &err);
408 err = security_socket_setsockopt(sock, level, optname);
414 if (level == SOL_SOCKET)
415 err = compat_sock_setsockopt(sock, level,
416 optname, optval, optlen);
417 else if (sock->ops->compat_setsockopt)
418 err = sock->ops->compat_setsockopt(sock, level,
419 optname, optval, optlen);
421 err = sock->ops->setsockopt(sock, level,
422 optname, optval, optlen);
428 static int do_get_sock_timeout(struct socket *sock, int level, int optname,
429 char __user *optval, int __user *optlen)
431 struct compat_timeval __user *up;
432 struct timeval ktime;
436 up = (struct compat_timeval __user *) optval;
437 if (get_user(len, optlen))
439 if (len < sizeof(*up))
444 err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len);
448 if (put_user(sizeof(*up), optlen) ||
449 !access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
450 __put_user(ktime.tv_sec, &up->tv_sec) ||
451 __put_user(ktime.tv_usec, &up->tv_usec))
457 static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
458 char __user *optval, int __user *optlen)
460 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
461 return do_get_sock_timeout(sock, level, optname, optval, optlen);
462 return sock_getsockopt(sock, level, optname, optval, optlen);
465 int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
467 struct compat_timeval __user *ctv =
468 (struct compat_timeval __user *) userstamp;
472 if (!sock_flag(sk, SOCK_TIMESTAMP))
473 sock_enable_timestamp(sk, SOCK_TIMESTAMP);
474 tv = ktime_to_timeval(sk->sk_stamp);
477 if (tv.tv_sec == 0) {
478 sk->sk_stamp = ktime_get_real();
479 tv = ktime_to_timeval(sk->sk_stamp);
482 if (put_user(tv.tv_sec, &ctv->tv_sec) ||
483 put_user(tv.tv_usec, &ctv->tv_usec))
487 EXPORT_SYMBOL(compat_sock_get_timestamp);
489 int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
491 struct compat_timespec __user *ctv =
492 (struct compat_timespec __user *) userstamp;
496 if (!sock_flag(sk, SOCK_TIMESTAMP))
497 sock_enable_timestamp(sk, SOCK_TIMESTAMP);
498 ts = ktime_to_timespec(sk->sk_stamp);
501 if (ts.tv_sec == 0) {
502 sk->sk_stamp = ktime_get_real();
503 ts = ktime_to_timespec(sk->sk_stamp);
506 if (put_user(ts.tv_sec, &ctv->tv_sec) ||
507 put_user(ts.tv_nsec, &ctv->tv_nsec))
511 EXPORT_SYMBOL(compat_sock_get_timestampns);
513 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
514 char __user *optval, int __user *optlen)
517 struct socket *sock = sockfd_lookup(fd, &err);
520 err = security_socket_getsockopt(sock, level, optname);
526 if (level == SOL_SOCKET)
527 err = compat_sock_getsockopt(sock, level,
528 optname, optval, optlen);
529 else if (sock->ops->compat_getsockopt)
530 err = sock->ops->compat_getsockopt(sock, level,
531 optname, optval, optlen);
533 err = sock->ops->getsockopt(sock, level,
534 optname, optval, optlen);
540 struct compat_group_req {
542 struct __kernel_sockaddr_storage gr_group
543 __attribute__ ((aligned(4)));
546 struct compat_group_source_req {
548 struct __kernel_sockaddr_storage gsr_group
549 __attribute__ ((aligned(4)));
550 struct __kernel_sockaddr_storage gsr_source
551 __attribute__ ((aligned(4)));
554 struct compat_group_filter {
556 struct __kernel_sockaddr_storage gf_group
557 __attribute__ ((aligned(4)));
560 struct __kernel_sockaddr_storage gf_slist[1]
561 __attribute__ ((aligned(4)));
564 #define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \
565 sizeof(struct __kernel_sockaddr_storage))
568 int compat_mc_setsockopt(struct sock *sock, int level, int optname,
569 char __user *optval, unsigned int optlen,
570 int (*setsockopt)(struct sock *, int, int, char __user *, unsigned int))
572 char __user *koptval = optval;
573 int koptlen = optlen;
576 case MCAST_JOIN_GROUP:
577 case MCAST_LEAVE_GROUP:
579 struct compat_group_req __user *gr32 = (void *)optval;
580 struct group_req __user *kgr =
581 compat_alloc_user_space(sizeof(struct group_req));
584 if (!access_ok(VERIFY_READ, gr32, sizeof(*gr32)) ||
585 !access_ok(VERIFY_WRITE, kgr, sizeof(struct group_req)) ||
586 __get_user(interface, &gr32->gr_interface) ||
587 __put_user(interface, &kgr->gr_interface) ||
588 copy_in_user(&kgr->gr_group, &gr32->gr_group,
589 sizeof(kgr->gr_group)))
591 koptval = (char __user *)kgr;
592 koptlen = sizeof(struct group_req);
595 case MCAST_JOIN_SOURCE_GROUP:
596 case MCAST_LEAVE_SOURCE_GROUP:
597 case MCAST_BLOCK_SOURCE:
598 case MCAST_UNBLOCK_SOURCE:
600 struct compat_group_source_req __user *gsr32 = (void *)optval;
601 struct group_source_req __user *kgsr = compat_alloc_user_space(
602 sizeof(struct group_source_req));
605 if (!access_ok(VERIFY_READ, gsr32, sizeof(*gsr32)) ||
606 !access_ok(VERIFY_WRITE, kgsr,
607 sizeof(struct group_source_req)) ||
608 __get_user(interface, &gsr32->gsr_interface) ||
609 __put_user(interface, &kgsr->gsr_interface) ||
610 copy_in_user(&kgsr->gsr_group, &gsr32->gsr_group,
611 sizeof(kgsr->gsr_group)) ||
612 copy_in_user(&kgsr->gsr_source, &gsr32->gsr_source,
613 sizeof(kgsr->gsr_source)))
615 koptval = (char __user *)kgsr;
616 koptlen = sizeof(struct group_source_req);
621 struct compat_group_filter __user *gf32 = (void *)optval;
622 struct group_filter __user *kgf;
623 u32 interface, fmode, numsrc;
625 if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) ||
626 __get_user(interface, &gf32->gf_interface) ||
627 __get_user(fmode, &gf32->gf_fmode) ||
628 __get_user(numsrc, &gf32->gf_numsrc))
630 koptlen = optlen + sizeof(struct group_filter) -
631 sizeof(struct compat_group_filter);
632 if (koptlen < GROUP_FILTER_SIZE(numsrc))
634 kgf = compat_alloc_user_space(koptlen);
635 if (!access_ok(VERIFY_WRITE, kgf, koptlen) ||
636 __put_user(interface, &kgf->gf_interface) ||
637 __put_user(fmode, &kgf->gf_fmode) ||
638 __put_user(numsrc, &kgf->gf_numsrc) ||
639 copy_in_user(&kgf->gf_group, &gf32->gf_group,
640 sizeof(kgf->gf_group)) ||
641 (numsrc && copy_in_user(kgf->gf_slist, gf32->gf_slist,
642 numsrc * sizeof(kgf->gf_slist[0]))))
644 koptval = (char __user *)kgf;
651 return setsockopt(sock, level, optname, koptval, koptlen);
653 EXPORT_SYMBOL(compat_mc_setsockopt);
655 int compat_mc_getsockopt(struct sock *sock, int level, int optname,
656 char __user *optval, int __user *optlen,
657 int (*getsockopt)(struct sock *, int, int, char __user *, int __user *))
659 struct compat_group_filter __user *gf32 = (void *)optval;
660 struct group_filter __user *kgf;
662 u32 interface, fmode, numsrc;
665 if (optname != MCAST_MSFILTER)
666 return getsockopt(sock, level, optname, optval, optlen);
668 koptlen = compat_alloc_user_space(sizeof(*koptlen));
669 if (!access_ok(VERIFY_READ, optlen, sizeof(*optlen)) ||
670 __get_user(ulen, optlen))
673 /* adjust len for pad */
674 klen = ulen + sizeof(*kgf) - sizeof(*gf32);
676 if (klen < GROUP_FILTER_SIZE(0))
679 if (!access_ok(VERIFY_WRITE, koptlen, sizeof(*koptlen)) ||
680 __put_user(klen, koptlen))
683 /* have to allow space for previous compat_alloc_user_space, too */
684 kgf = compat_alloc_user_space(klen+sizeof(*optlen));
686 if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) ||
687 __get_user(interface, &gf32->gf_interface) ||
688 __get_user(fmode, &gf32->gf_fmode) ||
689 __get_user(numsrc, &gf32->gf_numsrc) ||
690 __put_user(interface, &kgf->gf_interface) ||
691 __put_user(fmode, &kgf->gf_fmode) ||
692 __put_user(numsrc, &kgf->gf_numsrc) ||
693 copy_in_user(&kgf->gf_group, &gf32->gf_group, sizeof(kgf->gf_group)))
696 err = getsockopt(sock, level, optname, (char __user *)kgf, koptlen);
700 if (!access_ok(VERIFY_READ, koptlen, sizeof(*koptlen)) ||
701 __get_user(klen, koptlen))
704 ulen = klen - (sizeof(*kgf)-sizeof(*gf32));
706 if (!access_ok(VERIFY_WRITE, optlen, sizeof(*optlen)) ||
707 __put_user(ulen, optlen))
710 if (!access_ok(VERIFY_READ, kgf, klen) ||
711 !access_ok(VERIFY_WRITE, gf32, ulen) ||
712 __get_user(interface, &kgf->gf_interface) ||
713 __get_user(fmode, &kgf->gf_fmode) ||
714 __get_user(numsrc, &kgf->gf_numsrc) ||
715 __put_user(interface, &gf32->gf_interface) ||
716 __put_user(fmode, &gf32->gf_fmode) ||
717 __put_user(numsrc, &gf32->gf_numsrc))
722 klen -= GROUP_FILTER_SIZE(0);
723 copylen = numsrc * sizeof(gf32->gf_slist[0]);
726 if (copy_in_user(gf32->gf_slist, kgf->gf_slist, copylen))
731 EXPORT_SYMBOL(compat_mc_getsockopt);
734 /* Argument list sizes for compat_sys_socketcall */
735 #define AL(x) ((x) * sizeof(u32))
736 static unsigned char nas[21] = {
737 AL(0), AL(3), AL(3), AL(3), AL(2), AL(3),
738 AL(3), AL(3), AL(4), AL(4), AL(4), AL(6),
739 AL(6), AL(2), AL(5), AL(5), AL(3), AL(3),
744 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, unsigned flags)
746 return __sys_sendmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
749 asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
750 unsigned vlen, unsigned int flags)
752 return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
753 flags | MSG_CMSG_COMPAT);
756 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, unsigned int flags)
758 return __sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
761 asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len, unsigned flags)
763 return sys_recv(fd, buf, len, flags | MSG_CMSG_COMPAT);
766 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
767 unsigned flags, struct sockaddr __user *addr,
770 return sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr, addrlen);
773 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
774 unsigned vlen, unsigned int flags,
775 struct compat_timespec __user *timeout)
778 struct timespec ktspec;
781 return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
782 flags | MSG_CMSG_COMPAT, NULL);
784 if (get_compat_timespec(&ktspec, timeout))
787 datagrams = __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
788 flags | MSG_CMSG_COMPAT, &ktspec);
789 if (datagrams > 0 && put_compat_timespec(&ktspec, timeout))
795 asmlinkage long compat_sys_socketcall(int call, u32 __user *args)
801 if (call < SYS_SOCKET || call > SYS_SENDMMSG)
803 if (copy_from_user(a, args, nas[call]))
810 ret = sys_socket(a0, a1, a[2]);
813 ret = sys_bind(a0, compat_ptr(a1), a[2]);
816 ret = sys_connect(a0, compat_ptr(a1), a[2]);
819 ret = sys_listen(a0, a1);
822 ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0);
824 case SYS_GETSOCKNAME:
825 ret = sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2]));
827 case SYS_GETPEERNAME:
828 ret = sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2]));
831 ret = sys_socketpair(a0, a1, a[2], compat_ptr(a[3]));
834 ret = sys_send(a0, compat_ptr(a1), a[2], a[3]);
837 ret = sys_sendto(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), a[5]);
840 ret = compat_sys_recv(a0, compat_ptr(a1), a[2], a[3]);
843 ret = compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3],
844 compat_ptr(a[4]), compat_ptr(a[5]));
847 ret = sys_shutdown(a0, a1);
850 ret = compat_sys_setsockopt(a0, a1, a[2],
851 compat_ptr(a[3]), a[4]);
854 ret = compat_sys_getsockopt(a0, a1, a[2],
855 compat_ptr(a[3]), compat_ptr(a[4]));
858 ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]);
861 ret = compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]);
864 ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
867 ret = compat_sys_recvmmsg(a0, compat_ptr(a1), a[2], a[3],
871 ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]);