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YOSHIFUJI Hideaki4768fbc2007-02-09 23:25:31 +09001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * 32bit Socket syscall emulation. Based on arch/sparc64/kernel/sys_sparc32.c.
3 *
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>
YOSHIFUJI Hideaki4768fbc2007-02-09 23:25:31 +090011 * Copyright (C) 2000,2001 Andi Kleen, SuSE Labs
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 */
13
14#include <linux/kernel.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090015#include <linux/gfp.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <linux/fs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070017#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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include <linux/security.h>
Richard Guy Briggs91e66492017-01-17 11:07:15 -050025#include <linux/audit.h>
Paul Gortmakerbc3b2d72011-07-15 11:47:34 -040026#include <linux/export.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
28#include <net/scm.h>
29#include <net/sock.h>
David L Stevensdae50292008-04-27 01:06:07 -070030#include <net/ip.h>
31#include <net/ipv6.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include <asm/uaccess.h>
33#include <net/compat.h>
34
Al Viroda184282015-03-21 19:29:06 -040035int get_compat_msghdr(struct msghdr *kmsg,
36 struct compat_msghdr __user *umsg,
37 struct sockaddr __user **save_addr,
38 struct iovec **iov)
Linus Torvalds1da177e2005-04-16 15:20:36 -070039{
Al Viro08adb7d2014-11-10 20:23:13 -050040 compat_uptr_t uaddr, uiov, tmp3;
Al Viroc0371da2014-11-24 10:42:55 -050041 compat_size_t nr_segs;
Al Viro08adb7d2014-11-10 20:23:13 -050042 ssize_t err;
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
44 if (!access_ok(VERIFY_READ, umsg, sizeof(*umsg)) ||
Al Viro08adb7d2014-11-10 20:23:13 -050045 __get_user(uaddr, &umsg->msg_name) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -070046 __get_user(kmsg->msg_namelen, &umsg->msg_namelen) ||
Al Viro08adb7d2014-11-10 20:23:13 -050047 __get_user(uiov, &umsg->msg_iov) ||
Al Viroc0371da2014-11-24 10:42:55 -050048 __get_user(nr_segs, &umsg->msg_iovlen) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 __get_user(tmp3, &umsg->msg_control) ||
50 __get_user(kmsg->msg_controllen, &umsg->msg_controllen) ||
51 __get_user(kmsg->msg_flags, &umsg->msg_flags))
52 return -EFAULT;
Catalin Marinas91edd092015-03-20 16:48:13 +000053
54 if (!uaddr)
55 kmsg->msg_namelen = 0;
56
57 if (kmsg->msg_namelen < 0)
58 return -EINVAL;
59
Dan Carpenter1661bf32013-10-03 00:27:20 +030060 if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))
Dan Carpenterdb31c552013-11-27 15:40:21 +030061 kmsg->msg_namelen = sizeof(struct sockaddr_storage);
Linus Torvalds1da177e2005-04-16 15:20:36 -070062 kmsg->msg_control = compat_ptr(tmp3);
Linus Torvalds1da177e2005-04-16 15:20:36 -070063
Al Viro08adb7d2014-11-10 20:23:13 -050064 if (save_addr)
65 *save_addr = compat_ptr(uaddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
Al Viro08adb7d2014-11-10 20:23:13 -050067 if (uaddr && kmsg->msg_namelen) {
68 if (!save_addr) {
69 err = move_addr_to_kernel(compat_ptr(uaddr),
70 kmsg->msg_namelen,
71 kmsg->msg_name);
Stephen Hemmingere71a4782007-04-10 20:10:33 -070072 if (err < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 return err;
74 }
Andrey Ryabinin40eea802014-07-26 21:26:58 +040075 } else {
Al Viro08adb7d2014-11-10 20:23:13 -050076 kmsg->msg_name = NULL;
77 kmsg->msg_namelen = 0;
Andrey Ryabinin40eea802014-07-26 21:26:58 +040078 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070079
Al Viroc0371da2014-11-24 10:42:55 -050080 if (nr_segs > UIO_MAXIOV)
Al Viro08449322014-11-09 22:33:45 -050081 return -EMSGSIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
tadeusz.struk@intel.com0345f932015-03-19 12:31:25 -070083 kmsg->msg_iocb = NULL;
84
Al Viroda184282015-03-21 19:29:06 -040085 return compat_import_iovec(save_addr ? READ : WRITE,
86 compat_ptr(uiov), nr_segs,
87 UIO_FASTIOV, iov, &kmsg->msg_iter);
Linus Torvalds1da177e2005-04-16 15:20:36 -070088}
89
90/* Bleech... */
91#define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32))
92
93#define CMSG_COMPAT_DATA(cmsg) \
94 ((void __user *)((char __user *)(cmsg) + CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr))))
95#define CMSG_COMPAT_SPACE(len) \
96 (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + CMSG_COMPAT_ALIGN(len))
97#define CMSG_COMPAT_LEN(len) \
98 (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + (len))
99
100#define CMSG_COMPAT_FIRSTHDR(msg) \
101 (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \
102 (struct compat_cmsghdr __user *)((msg)->msg_control) : \
103 (struct compat_cmsghdr __user *)NULL)
104
105#define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \
106 ((ucmlen) >= sizeof(struct compat_cmsghdr) && \
107 (ucmlen) <= (unsigned long) \
108 ((mhdr)->msg_controllen - \
109 ((char *)(ucmsg) - (char *)(mhdr)->msg_control)))
110
111static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg,
112 struct compat_cmsghdr __user *cmsg, int cmsg_len)
113{
114 char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len);
115 if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) >
116 msg->msg_controllen)
117 return NULL;
118 return (struct compat_cmsghdr __user *)ptr;
119}
120
121/* There is a lot of hair here because the alignment rules (and
122 * thus placement) of cmsg headers and length are different for
123 * 32-bit apps. -DaveM
124 */
Al Viro8920e8f2005-09-07 18:28:51 -0700125int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 unsigned char *stackbuf, int stackbuf_size)
127{
128 struct compat_cmsghdr __user *ucmsg;
129 struct cmsghdr *kcmsg, *kcmsg_base;
130 compat_size_t ucmlen;
131 __kernel_size_t kcmlen, tmp;
Al Viro8920e8f2005-09-07 18:28:51 -0700132 int err = -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133
134 kcmlen = 0;
135 kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;
136 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700137 while (ucmsg != NULL) {
138 if (get_user(ucmlen, &ucmsg->cmsg_len))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 return -EFAULT;
140
141 /* Catch bogons. */
142 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
143 return -EINVAL;
144
145 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) +
146 CMSG_ALIGN(sizeof(struct cmsghdr)));
Al Viro8920e8f2005-09-07 18:28:51 -0700147 tmp = CMSG_ALIGN(tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 kcmlen += tmp;
149 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
150 }
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700151 if (kcmlen == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 return -EINVAL;
153
154 /* The kcmlen holds the 64-bit version of the control length.
155 * It may not be modified as we do not stick it into the kmsg
156 * until we have successfully copied over all of the data
157 * from the user.
158 */
Al Viro8920e8f2005-09-07 18:28:51 -0700159 if (kcmlen > stackbuf_size)
160 kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL);
161 if (kcmsg == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 return -ENOBUFS;
163
164 /* Now copy them over neatly. */
165 memset(kcmsg, 0, kcmlen);
166 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700167 while (ucmsg != NULL) {
Al Viro8920e8f2005-09-07 18:28:51 -0700168 if (__get_user(ucmlen, &ucmsg->cmsg_len))
169 goto Efault;
170 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
171 goto Einval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) +
173 CMSG_ALIGN(sizeof(struct cmsghdr)));
Al Viro8920e8f2005-09-07 18:28:51 -0700174 if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp))
175 goto Einval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 kcmsg->cmsg_len = tmp;
Al Viro8920e8f2005-09-07 18:28:51 -0700177 tmp = CMSG_ALIGN(tmp);
178 if (__get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level) ||
179 __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type) ||
180 copy_from_user(CMSG_DATA(kcmsg),
181 CMSG_COMPAT_DATA(ucmsg),
182 (ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg)))))
183 goto Efault;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184
185 /* Advance. */
Al Viro8920e8f2005-09-07 18:28:51 -0700186 kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
188 }
189
190 /* Ok, looks like we made it. Hook it up and return success. */
191 kmsg->msg_control = kcmsg_base;
192 kmsg->msg_controllen = kcmlen;
193 return 0;
194
Al Viro8920e8f2005-09-07 18:28:51 -0700195Einval:
196 err = -EINVAL;
197Efault:
198 if (kcmsg_base != (struct cmsghdr *)stackbuf)
199 sock_kfree_s(sk, kcmsg_base, kcmlen);
200 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201}
202
203int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
204{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
206 struct compat_cmsghdr cmhdr;
Jesper Juhl81881042012-07-22 11:37:20 +0000207 struct compat_timeval ctv;
208 struct compat_timespec cts[3];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209 int cmlen;
210
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700211 if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 kmsg->msg_flags |= MSG_CTRUNC;
213 return 0; /* XXX: return error? check spec. */
214 }
215
H. J. Luee4fa232012-02-19 17:50:46 -0800216 if (!COMPAT_USE_64BIT_TIME) {
H. J. Luee4fa232012-02-19 17:50:46 -0800217 if (level == SOL_SOCKET && type == SCM_TIMESTAMP) {
218 struct timeval *tv = (struct timeval *)data;
219 ctv.tv_sec = tv->tv_sec;
220 ctv.tv_usec = tv->tv_usec;
221 data = &ctv;
222 len = sizeof(ctv);
Patrick Ohly20d49472009-02-12 05:03:38 +0000223 }
H. J. Luee4fa232012-02-19 17:50:46 -0800224 if (level == SOL_SOCKET &&
225 (type == SCM_TIMESTAMPNS || type == SCM_TIMESTAMPING)) {
226 int count = type == SCM_TIMESTAMPNS ? 1 : 3;
227 int i;
228 struct timespec *ts = (struct timespec *)data;
229 for (i = 0; i < count; i++) {
230 cts[i].tv_sec = ts[i].tv_sec;
231 cts[i].tv_nsec = ts[i].tv_nsec;
232 }
233 data = &cts;
234 len = sizeof(cts[0]) * count;
235 }
YOSHIFUJI Hideaki4768fbc2007-02-09 23:25:31 +0900236 }
237
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 cmlen = CMSG_COMPAT_LEN(len);
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700239 if (kmsg->msg_controllen < cmlen) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 kmsg->msg_flags |= MSG_CTRUNC;
241 cmlen = kmsg->msg_controllen;
242 }
243 cmhdr.cmsg_level = level;
244 cmhdr.cmsg_type = type;
245 cmhdr.cmsg_len = cmlen;
246
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700247 if (copy_to_user(cm, &cmhdr, sizeof cmhdr))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248 return -EFAULT;
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700249 if (copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 return -EFAULT;
251 cmlen = CMSG_COMPAT_SPACE(len);
Wei Yongjun1ac70e72007-12-20 14:36:44 -0800252 if (kmsg->msg_controllen < cmlen)
253 cmlen = kmsg->msg_controllen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 kmsg->msg_control += cmlen;
255 kmsg->msg_controllen -= cmlen;
256 return 0;
257}
258
259void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
260{
261 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
262 int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int);
263 int fdnum = scm->fp->count;
264 struct file **fp = scm->fp->fp;
265 int __user *cmfptr;
266 int err = 0, i;
267
268 if (fdnum < fdmax)
269 fdmax = fdnum;
270
271 for (i = 0, cmfptr = (int __user *) CMSG_COMPAT_DATA(cm); i < fdmax; i++, cmfptr++) {
272 int new_fd;
273 err = security_file_receive(fp[i]);
274 if (err)
275 break;
Ulrich Drepper4a195422007-07-15 23:40:34 -0700276 err = get_unused_fd_flags(MSG_CMSG_CLOEXEC & kmsg->msg_flags
277 ? O_CLOEXEC : 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 if (err < 0)
279 break;
280 new_fd = err;
281 err = put_user(new_fd, cmfptr);
282 if (err) {
283 put_unused_fd(new_fd);
284 break;
285 }
286 /* Bump the usage count and install the file. */
Al Virocb0942b2012-08-27 14:48:26 -0400287 fd_install(new_fd, get_file(fp[i]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 }
289
290 if (i > 0) {
291 int cmlen = CMSG_COMPAT_LEN(i * sizeof(int));
Miklos Szeredieffee6a2006-10-09 21:42:14 -0700292 err = put_user(SOL_SOCKET, &cm->cmsg_level);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293 if (!err)
294 err = put_user(SCM_RIGHTS, &cm->cmsg_type);
295 if (!err)
296 err = put_user(cmlen, &cm->cmsg_len);
297 if (!err) {
298 cmlen = CMSG_COMPAT_SPACE(i * sizeof(int));
299 kmsg->msg_control += cmlen;
300 kmsg->msg_controllen -= cmlen;
301 }
302 }
303 if (i < fdnum)
304 kmsg->msg_flags |= MSG_CTRUNC;
305
306 /*
307 * All of the files that fit in the message have had their
308 * usage counts incremented, so we just free the list.
309 */
310 __scm_destroy(scm);
311}
312
Willem de Bruijn719c44d2016-06-07 12:06:34 -0400313/* allocate a 64-bit sock_fprog on the user stack for duration of syscall. */
314struct sock_fprog __user *get_compat_bpf_fprog(char __user *optval)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315{
316 struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval;
YOSHIFUJI Hideaki4768fbc2007-02-09 23:25:31 +0900317 struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 compat_uptr_t ptr;
319 u16 len;
320
321 if (!access_ok(VERIFY_READ, fprog32, sizeof(*fprog32)) ||
322 !access_ok(VERIFY_WRITE, kfprog, sizeof(struct sock_fprog)) ||
323 __get_user(len, &fprog32->len) ||
324 __get_user(ptr, &fprog32->filter) ||
325 __put_user(len, &kfprog->len) ||
326 __put_user(compat_ptr(ptr), &kfprog->filter))
Willem de Bruijn719c44d2016-06-07 12:06:34 -0400327 return NULL;
328
329 return kfprog;
330}
331EXPORT_SYMBOL_GPL(get_compat_bpf_fprog);
332
333static int do_set_attach_filter(struct socket *sock, int level, int optname,
334 char __user *optval, unsigned int optlen)
335{
336 struct sock_fprog __user *kfprog;
337
338 kfprog = get_compat_bpf_fprog(optval);
339 if (!kfprog)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 return -EFAULT;
341
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800342 return sock_setsockopt(sock, level, optname, (char __user *)kfprog,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 sizeof(struct sock_fprog));
344}
345
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800346static int do_set_sock_timeout(struct socket *sock, int level,
David S. Millerb7058842009-09-30 16:12:20 -0700347 int optname, char __user *optval, unsigned int optlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348{
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700349 struct compat_timeval __user *up = (struct compat_timeval __user *)optval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 struct timeval ktime;
351 mm_segment_t old_fs;
352 int err;
353
354 if (optlen < sizeof(*up))
355 return -EINVAL;
356 if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
357 __get_user(ktime.tv_sec, &up->tv_sec) ||
358 __get_user(ktime.tv_usec, &up->tv_usec))
359 return -EFAULT;
360 old_fs = get_fs();
361 set_fs(KERNEL_DS);
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700362 err = sock_setsockopt(sock, level, optname, (char *)&ktime, sizeof(ktime));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 set_fs(old_fs);
364
365 return err;
366}
367
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800368static int compat_sock_setsockopt(struct socket *sock, int level, int optname,
David S. Millerb7058842009-09-30 16:12:20 -0700369 char __user *optval, unsigned int optlen)
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800370{
Helge Deller19575982016-06-03 23:49:17 +0200371 if (optname == SO_ATTACH_FILTER ||
372 optname == SO_ATTACH_REUSEPORT_CBPF)
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800373 return do_set_attach_filter(sock, level, optname,
374 optval, optlen);
375 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
376 return do_set_sock_timeout(sock, level, optname, optval, optlen);
377
378 return sock_setsockopt(sock, level, optname, optval, optlen);
379}
380
Heiko Carstens361d93c2014-03-03 16:21:27 +0100381COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname,
382 char __user *, optval, unsigned int, optlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383{
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800384 int err;
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700385 struct socket *sock = sockfd_lookup(fd, &err);
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800386
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700387 if (sock) {
388 err = security_socket_setsockopt(sock, level, optname);
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800389 if (err) {
390 sockfd_put(sock);
391 return err;
392 }
393
394 if (level == SOL_SOCKET)
395 err = compat_sock_setsockopt(sock, level,
396 optname, optval, optlen);
397 else if (sock->ops->compat_setsockopt)
398 err = sock->ops->compat_setsockopt(sock, level,
399 optname, optval, optlen);
400 else
401 err = sock->ops->setsockopt(sock, level,
402 optname, optval, optlen);
403 sockfd_put(sock);
404 }
405 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406}
407
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800408static int do_get_sock_timeout(struct socket *sock, int level, int optname,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 char __user *optval, int __user *optlen)
410{
411 struct compat_timeval __user *up;
412 struct timeval ktime;
413 mm_segment_t old_fs;
414 int len, err;
415
416 up = (struct compat_timeval __user *) optval;
417 if (get_user(len, optlen))
418 return -EFAULT;
419 if (len < sizeof(*up))
420 return -EINVAL;
421 len = sizeof(ktime);
422 old_fs = get_fs();
423 set_fs(KERNEL_DS);
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800424 err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 set_fs(old_fs);
426
427 if (!err) {
428 if (put_user(sizeof(*up), optlen) ||
429 !access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
430 __put_user(ktime.tv_sec, &up->tv_sec) ||
431 __put_user(ktime.tv_usec, &up->tv_usec))
432 err = -EFAULT;
433 }
434 return err;
435}
436
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800437static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
438 char __user *optval, int __user *optlen)
439{
440 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
441 return do_get_sock_timeout(sock, level, optname, optval, optlen);
442 return sock_getsockopt(sock, level, optname, optval, optlen);
443}
444
Shaun Pereiraf0ac2612006-03-21 23:59:39 -0800445int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
446{
H. J. Luee4fa232012-02-19 17:50:46 -0800447 struct compat_timeval __user *ctv;
448 int err;
Eric Dumazetb7aa0bf2007-04-19 16:16:32 -0700449 struct timeval tv;
Shaun Pereiraf0ac2612006-03-21 23:59:39 -0800450
H. J. Luee4fa232012-02-19 17:50:46 -0800451 if (COMPAT_USE_64BIT_TIME)
452 return sock_get_timestamp(sk, userstamp);
453
454 ctv = (struct compat_timeval __user *) userstamp;
455 err = -ENOENT;
Shaun Pereiraf0ac2612006-03-21 23:59:39 -0800456 if (!sock_flag(sk, SOCK_TIMESTAMP))
Patrick Ohly20d49472009-02-12 05:03:38 +0000457 sock_enable_timestamp(sk, SOCK_TIMESTAMP);
Eric Dumazetb7aa0bf2007-04-19 16:16:32 -0700458 tv = ktime_to_timeval(sk->sk_stamp);
459 if (tv.tv_sec == -1)
Shaun Pereiraf0ac2612006-03-21 23:59:39 -0800460 return err;
Eric Dumazetb7aa0bf2007-04-19 16:16:32 -0700461 if (tv.tv_sec == 0) {
462 sk->sk_stamp = ktime_get_real();
463 tv = ktime_to_timeval(sk->sk_stamp);
464 }
465 err = 0;
466 if (put_user(tv.tv_sec, &ctv->tv_sec) ||
467 put_user(tv.tv_usec, &ctv->tv_usec))
Shaun Pereiraf0ac2612006-03-21 23:59:39 -0800468 err = -EFAULT;
469 return err;
470}
471EXPORT_SYMBOL(compat_sock_get_timestamp);
472
Eric Dumazetae40eb12007-03-18 17:33:16 -0700473int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
474{
H. J. Luee4fa232012-02-19 17:50:46 -0800475 struct compat_timespec __user *ctv;
476 int err;
Eric Dumazetae40eb12007-03-18 17:33:16 -0700477 struct timespec ts;
478
H. J. Luee4fa232012-02-19 17:50:46 -0800479 if (COMPAT_USE_64BIT_TIME)
480 return sock_get_timestampns (sk, userstamp);
481
482 ctv = (struct compat_timespec __user *) userstamp;
483 err = -ENOENT;
Eric Dumazetae40eb12007-03-18 17:33:16 -0700484 if (!sock_flag(sk, SOCK_TIMESTAMP))
Patrick Ohly20d49472009-02-12 05:03:38 +0000485 sock_enable_timestamp(sk, SOCK_TIMESTAMP);
Eric Dumazetae40eb12007-03-18 17:33:16 -0700486 ts = ktime_to_timespec(sk->sk_stamp);
487 if (ts.tv_sec == -1)
488 return err;
489 if (ts.tv_sec == 0) {
490 sk->sk_stamp = ktime_get_real();
491 ts = ktime_to_timespec(sk->sk_stamp);
492 }
493 err = 0;
494 if (put_user(ts.tv_sec, &ctv->tv_sec) ||
495 put_user(ts.tv_nsec, &ctv->tv_nsec))
496 err = -EFAULT;
497 return err;
498}
499EXPORT_SYMBOL(compat_sock_get_timestampns);
500
Heiko Carstens361d93c2014-03-03 16:21:27 +0100501COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname,
502 char __user *, optval, int __user *, optlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503{
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800504 int err;
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700505 struct socket *sock = sockfd_lookup(fd, &err);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700507 if (sock) {
508 err = security_socket_getsockopt(sock, level, optname);
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800509 if (err) {
510 sockfd_put(sock);
511 return err;
512 }
513
514 if (level == SOL_SOCKET)
515 err = compat_sock_getsockopt(sock, level,
516 optname, optval, optlen);
517 else if (sock->ops->compat_getsockopt)
518 err = sock->ops->compat_getsockopt(sock, level,
519 optname, optval, optlen);
520 else
521 err = sock->ops->getsockopt(sock, level,
522 optname, optval, optlen);
523 sockfd_put(sock);
524 }
525 return err;
526}
David L Stevensdae50292008-04-27 01:06:07 -0700527
528struct compat_group_req {
529 __u32 gr_interface;
530 struct __kernel_sockaddr_storage gr_group
Ameen Alie099b2d2015-02-22 23:40:36 +0200531 __aligned(4);
Eric Dumazetbc105022010-06-03 03:21:52 -0700532} __packed;
David L Stevensdae50292008-04-27 01:06:07 -0700533
534struct compat_group_source_req {
535 __u32 gsr_interface;
536 struct __kernel_sockaddr_storage gsr_group
Ameen Alie099b2d2015-02-22 23:40:36 +0200537 __aligned(4);
David L Stevensdae50292008-04-27 01:06:07 -0700538 struct __kernel_sockaddr_storage gsr_source
Ameen Alie099b2d2015-02-22 23:40:36 +0200539 __aligned(4);
Eric Dumazetbc105022010-06-03 03:21:52 -0700540} __packed;
David L Stevensdae50292008-04-27 01:06:07 -0700541
542struct compat_group_filter {
543 __u32 gf_interface;
544 struct __kernel_sockaddr_storage gf_group
Ameen Alie099b2d2015-02-22 23:40:36 +0200545 __aligned(4);
David L Stevensdae50292008-04-27 01:06:07 -0700546 __u32 gf_fmode;
547 __u32 gf_numsrc;
548 struct __kernel_sockaddr_storage gf_slist[1]
Ameen Alie099b2d2015-02-22 23:40:36 +0200549 __aligned(4);
Eric Dumazetbc105022010-06-03 03:21:52 -0700550} __packed;
David L Stevensdae50292008-04-27 01:06:07 -0700551
David L Stevensbe666e02008-04-29 03:23:00 -0700552#define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \
553 sizeof(struct __kernel_sockaddr_storage))
554
David L Stevensdae50292008-04-27 01:06:07 -0700555
556int compat_mc_setsockopt(struct sock *sock, int level, int optname,
David S. Millerb7058842009-09-30 16:12:20 -0700557 char __user *optval, unsigned int optlen,
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700558 int (*setsockopt)(struct sock *, int, int, char __user *, unsigned int))
David L Stevensdae50292008-04-27 01:06:07 -0700559{
560 char __user *koptval = optval;
561 int koptlen = optlen;
562
563 switch (optname) {
564 case MCAST_JOIN_GROUP:
565 case MCAST_LEAVE_GROUP:
566 {
567 struct compat_group_req __user *gr32 = (void *)optval;
568 struct group_req __user *kgr =
569 compat_alloc_user_space(sizeof(struct group_req));
570 u32 interface;
571
572 if (!access_ok(VERIFY_READ, gr32, sizeof(*gr32)) ||
573 !access_ok(VERIFY_WRITE, kgr, sizeof(struct group_req)) ||
574 __get_user(interface, &gr32->gr_interface) ||
575 __put_user(interface, &kgr->gr_interface) ||
576 copy_in_user(&kgr->gr_group, &gr32->gr_group,
577 sizeof(kgr->gr_group)))
578 return -EFAULT;
579 koptval = (char __user *)kgr;
580 koptlen = sizeof(struct group_req);
581 break;
582 }
583 case MCAST_JOIN_SOURCE_GROUP:
584 case MCAST_LEAVE_SOURCE_GROUP:
585 case MCAST_BLOCK_SOURCE:
586 case MCAST_UNBLOCK_SOURCE:
587 {
588 struct compat_group_source_req __user *gsr32 = (void *)optval;
David L Stevensbe666e02008-04-29 03:23:00 -0700589 struct group_source_req __user *kgsr = compat_alloc_user_space(
David L Stevensdae50292008-04-27 01:06:07 -0700590 sizeof(struct group_source_req));
591 u32 interface;
592
593 if (!access_ok(VERIFY_READ, gsr32, sizeof(*gsr32)) ||
594 !access_ok(VERIFY_WRITE, kgsr,
595 sizeof(struct group_source_req)) ||
596 __get_user(interface, &gsr32->gsr_interface) ||
597 __put_user(interface, &kgsr->gsr_interface) ||
598 copy_in_user(&kgsr->gsr_group, &gsr32->gsr_group,
599 sizeof(kgsr->gsr_group)) ||
600 copy_in_user(&kgsr->gsr_source, &gsr32->gsr_source,
601 sizeof(kgsr->gsr_source)))
602 return -EFAULT;
603 koptval = (char __user *)kgsr;
604 koptlen = sizeof(struct group_source_req);
605 break;
606 }
607 case MCAST_MSFILTER:
608 {
609 struct compat_group_filter __user *gf32 = (void *)optval;
David L Stevensbe666e02008-04-29 03:23:00 -0700610 struct group_filter __user *kgf;
David L Stevensdae50292008-04-27 01:06:07 -0700611 u32 interface, fmode, numsrc;
612
David L Stevensbe666e02008-04-29 03:23:00 -0700613 if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) ||
David L Stevensdae50292008-04-27 01:06:07 -0700614 __get_user(interface, &gf32->gf_interface) ||
615 __get_user(fmode, &gf32->gf_fmode) ||
616 __get_user(numsrc, &gf32->gf_numsrc))
617 return -EFAULT;
618 koptlen = optlen + sizeof(struct group_filter) -
619 sizeof(struct compat_group_filter);
620 if (koptlen < GROUP_FILTER_SIZE(numsrc))
621 return -EINVAL;
622 kgf = compat_alloc_user_space(koptlen);
623 if (!access_ok(VERIFY_WRITE, kgf, koptlen) ||
624 __put_user(interface, &kgf->gf_interface) ||
625 __put_user(fmode, &kgf->gf_fmode) ||
626 __put_user(numsrc, &kgf->gf_numsrc) ||
627 copy_in_user(&kgf->gf_group, &gf32->gf_group,
628 sizeof(kgf->gf_group)) ||
David L Stevensbe666e02008-04-29 03:23:00 -0700629 (numsrc && copy_in_user(kgf->gf_slist, gf32->gf_slist,
David L Stevensdae50292008-04-27 01:06:07 -0700630 numsrc * sizeof(kgf->gf_slist[0]))))
631 return -EFAULT;
632 koptval = (char __user *)kgf;
633 break;
634 }
635
636 default:
637 break;
638 }
639 return setsockopt(sock, level, optname, koptval, koptlen);
640}
David L Stevensdae50292008-04-27 01:06:07 -0700641EXPORT_SYMBOL(compat_mc_setsockopt);
642
David L Stevens42908c62008-04-29 03:23:22 -0700643int compat_mc_getsockopt(struct sock *sock, int level, int optname,
644 char __user *optval, int __user *optlen,
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700645 int (*getsockopt)(struct sock *, int, int, char __user *, int __user *))
David L Stevens42908c62008-04-29 03:23:22 -0700646{
647 struct compat_group_filter __user *gf32 = (void *)optval;
648 struct group_filter __user *kgf;
649 int __user *koptlen;
650 u32 interface, fmode, numsrc;
651 int klen, ulen, err;
652
653 if (optname != MCAST_MSFILTER)
654 return getsockopt(sock, level, optname, optval, optlen);
655
656 koptlen = compat_alloc_user_space(sizeof(*koptlen));
657 if (!access_ok(VERIFY_READ, optlen, sizeof(*optlen)) ||
658 __get_user(ulen, optlen))
659 return -EFAULT;
660
661 /* adjust len for pad */
662 klen = ulen + sizeof(*kgf) - sizeof(*gf32);
663
664 if (klen < GROUP_FILTER_SIZE(0))
665 return -EINVAL;
666
667 if (!access_ok(VERIFY_WRITE, koptlen, sizeof(*koptlen)) ||
668 __put_user(klen, koptlen))
669 return -EFAULT;
670
671 /* have to allow space for previous compat_alloc_user_space, too */
672 kgf = compat_alloc_user_space(klen+sizeof(*optlen));
673
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) ||
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700681 copy_in_user(&kgf->gf_group, &gf32->gf_group, sizeof(kgf->gf_group)))
David L Stevens42908c62008-04-29 03:23:22 -0700682 return -EFAULT;
683
684 err = getsockopt(sock, level, optname, (char __user *)kgf, koptlen);
685 if (err)
686 return err;
687
688 if (!access_ok(VERIFY_READ, koptlen, sizeof(*koptlen)) ||
689 __get_user(klen, koptlen))
690 return -EFAULT;
691
692 ulen = klen - (sizeof(*kgf)-sizeof(*gf32));
693
694 if (!access_ok(VERIFY_WRITE, optlen, sizeof(*optlen)) ||
695 __put_user(ulen, optlen))
696 return -EFAULT;
697
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))
706 return -EFAULT;
707 if (numsrc) {
708 int copylen;
709
710 klen -= GROUP_FILTER_SIZE(0);
711 copylen = numsrc * sizeof(gf32->gf_slist[0]);
712 if (copylen > klen)
713 copylen = klen;
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700714 if (copy_in_user(gf32->gf_slist, kgf->gf_slist, copylen))
David L Stevens42908c62008-04-29 03:23:22 -0700715 return -EFAULT;
716 }
717 return err;
718}
David L Stevens42908c62008-04-29 03:23:22 -0700719EXPORT_SYMBOL(compat_mc_getsockopt);
720
David L Stevensdae50292008-04-27 01:06:07 -0700721
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722/* Argument list sizes for compat_sys_socketcall */
723#define AL(x) ((x) * sizeof(u32))
Anton Blanchard228e5482011-05-02 20:21:35 +0000724static unsigned char nas[21] = {
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700725 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),
Anton Blanchard228e5482011-05-02 20:21:35 +0000728 AL(4), AL(5), AL(4)
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700729};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730#undef AL
731
Heiko Carstens361d93c2014-03-03 16:21:27 +0100732COMPAT_SYSCALL_DEFINE3(sendmsg, int, fd, struct compat_msghdr __user *, msg, unsigned int, flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733{
Al Viro666547f2014-04-06 14:03:05 -0400734 return __sys_sendmsg(fd, (struct user_msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735}
736
Heiko Carstens361d93c2014-03-03 16:21:27 +0100737COMPAT_SYSCALL_DEFINE4(sendmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
738 unsigned int, vlen, unsigned int, flags)
Anton Blanchard228e5482011-05-02 20:21:35 +0000739{
740 return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
741 flags | MSG_CMSG_COMPAT);
742}
743
Heiko Carstens361d93c2014-03-03 16:21:27 +0100744COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg, unsigned int, flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745{
Al Viro666547f2014-04-06 14:03:05 -0400746 return __sys_recvmsg(fd, (struct user_msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747}
748
Heiko Carstens3a49a0f2014-03-04 17:09:57 +0100749COMPAT_SYSCALL_DEFINE4(recv, int, fd, void __user *, buf, compat_size_t, len, unsigned int, flags)
Johannes Berg1dacc762009-07-01 11:26:02 +0000750{
751 return sys_recv(fd, buf, len, flags | MSG_CMSG_COMPAT);
752}
753
Heiko Carstens3a49a0f2014-03-04 17:09:57 +0100754COMPAT_SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, buf, compat_size_t, len,
755 unsigned int, flags, struct sockaddr __user *, addr,
756 int __user *, addrlen)
Johannes Berg1dacc762009-07-01 11:26:02 +0000757{
758 return sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr, addrlen);
759}
760
Heiko Carstens361d93c2014-03-03 16:21:27 +0100761COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
762 unsigned int, vlen, unsigned int, flags,
763 struct compat_timespec __user *, timeout)
Arnaldo Carvalho de Meloa2e27252009-10-12 23:40:10 -0700764{
765 int datagrams;
766 struct timespec ktspec;
Arnaldo Carvalho de Meloa2e27252009-10-12 23:40:10 -0700767
Jean-Mickael Guerin5b231362009-12-01 07:52:16 +0000768 if (timeout == NULL)
769 return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
770 flags | MSG_CMSG_COMPAT, NULL);
771
PaX Team2def2ef2014-01-30 16:59:25 -0800772 if (compat_get_timespec(&ktspec, timeout))
Arnaldo Carvalho de Meloa2e27252009-10-12 23:40:10 -0700773 return -EFAULT;
774
775 datagrams = __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
776 flags | MSG_CMSG_COMPAT, &ktspec);
PaX Team2def2ef2014-01-30 16:59:25 -0800777 if (datagrams > 0 && compat_put_timespec(&ktspec, timeout))
Arnaldo Carvalho de Meloa2e27252009-10-12 23:40:10 -0700778 datagrams = -EFAULT;
779
780 return datagrams;
781}
782
Heiko Carstens361d93c2014-03-03 16:21:27 +0100783COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784{
Richard Guy Briggs91e66492017-01-17 11:07:15 -0500785 u32 a[AUDITSC_ARGS];
786 unsigned int len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787 u32 a0, a1;
Richard Guy Briggs91e66492017-01-17 11:07:15 -0500788 int ret;
YOSHIFUJI Hideaki4768fbc2007-02-09 23:25:31 +0900789
Anton Blanchard228e5482011-05-02 20:21:35 +0000790 if (call < SYS_SOCKET || call > SYS_SENDMMSG)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791 return -EINVAL;
Richard Guy Briggs91e66492017-01-17 11:07:15 -0500792 len = nas[call];
793 if (len > sizeof(a))
794 return -EINVAL;
795
796 if (copy_from_user(a, args, len))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797 return -EFAULT;
Richard Guy Briggs91e66492017-01-17 11:07:15 -0500798
799 ret = audit_socketcall_compat(len / sizeof(a[0]), a);
800 if (ret)
801 return ret;
802
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803 a0 = a[0];
804 a1 = a[1];
YOSHIFUJI Hideaki4768fbc2007-02-09 23:25:31 +0900805
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700806 switch (call) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807 case SYS_SOCKET:
808 ret = sys_socket(a0, a1, a[2]);
809 break;
810 case SYS_BIND:
811 ret = sys_bind(a0, compat_ptr(a1), a[2]);
812 break;
813 case SYS_CONNECT:
814 ret = sys_connect(a0, compat_ptr(a1), a[2]);
815 break;
816 case SYS_LISTEN:
817 ret = sys_listen(a0, a1);
818 break;
819 case SYS_ACCEPT:
Ulrich Drepperde11def2008-11-19 15:36:14 -0800820 ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821 break;
822 case SYS_GETSOCKNAME:
823 ret = sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2]));
824 break;
825 case SYS_GETPEERNAME:
826 ret = sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2]));
827 break;
828 case SYS_SOCKETPAIR:
829 ret = sys_socketpair(a0, a1, a[2], compat_ptr(a[3]));
830 break;
831 case SYS_SEND:
832 ret = sys_send(a0, compat_ptr(a1), a[2], a[3]);
833 break;
834 case SYS_SENDTO:
835 ret = sys_sendto(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), a[5]);
836 break;
837 case SYS_RECV:
Johannes Berg1dacc762009-07-01 11:26:02 +0000838 ret = compat_sys_recv(a0, compat_ptr(a1), a[2], a[3]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839 break;
840 case SYS_RECVFROM:
Johannes Berg1dacc762009-07-01 11:26:02 +0000841 ret = compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3],
842 compat_ptr(a[4]), compat_ptr(a[5]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843 break;
844 case SYS_SHUTDOWN:
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700845 ret = sys_shutdown(a0, a1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846 break;
847 case SYS_SETSOCKOPT:
848 ret = compat_sys_setsockopt(a0, a1, a[2],
849 compat_ptr(a[3]), a[4]);
850 break;
851 case SYS_GETSOCKOPT:
852 ret = compat_sys_getsockopt(a0, a1, a[2],
853 compat_ptr(a[3]), compat_ptr(a[4]));
854 break;
855 case SYS_SENDMSG:
856 ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]);
857 break;
Anton Blanchard228e5482011-05-02 20:21:35 +0000858 case SYS_SENDMMSG:
859 ret = compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]);
860 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861 case SYS_RECVMSG:
862 ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
863 break;
Arnaldo Carvalho de Meloa2e27252009-10-12 23:40:10 -0700864 case SYS_RECVMMSG:
865 ret = compat_sys_recvmmsg(a0, compat_ptr(a1), a[2], a[3],
866 compat_ptr(a[4]));
867 break;
Ulrich Drepperde11def2008-11-19 15:36:14 -0800868 case SYS_ACCEPT4:
869 ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]);
Ulrich Drepperaaca0bd2008-07-23 21:29:20 -0700870 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871 default:
872 ret = -EINVAL;
873 break;
874 }
875 return ret;
876}