blob: 96c544b05b15e3287cff8905b4b6007af69322af [file] [log] [blame]
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>
Paul Gortmakerbc3b2d72011-07-15 11:47:34 -040025#include <linux/export.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070026
27#include <net/scm.h>
28#include <net/sock.h>
David L Stevensdae50292008-04-27 01:06:07 -070029#include <net/ip.h>
30#include <net/ipv6.h>
Linus Torvalds7c0f6ba2016-12-24 11:46:01 -080031#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include <net/compat.h>
33
Al Viroda184282015-03-21 19:29:06 -040034int get_compat_msghdr(struct msghdr *kmsg,
35 struct compat_msghdr __user *umsg,
36 struct sockaddr __user **save_addr,
37 struct iovec **iov)
Linus Torvalds1da177e2005-04-16 15:20:36 -070038{
Al Viro08adb7d2014-11-10 20:23:13 -050039 compat_uptr_t uaddr, uiov, tmp3;
Al Viroc0371da2014-11-24 10:42:55 -050040 compat_size_t nr_segs;
Al Viro08adb7d2014-11-10 20:23:13 -050041 ssize_t err;
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
43 if (!access_ok(VERIFY_READ, umsg, sizeof(*umsg)) ||
Al Viro08adb7d2014-11-10 20:23:13 -050044 __get_user(uaddr, &umsg->msg_name) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 __get_user(kmsg->msg_namelen, &umsg->msg_namelen) ||
Al Viro08adb7d2014-11-10 20:23:13 -050046 __get_user(uiov, &umsg->msg_iov) ||
Al Viroc0371da2014-11-24 10:42:55 -050047 __get_user(nr_segs, &umsg->msg_iovlen) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 __get_user(tmp3, &umsg->msg_control) ||
49 __get_user(kmsg->msg_controllen, &umsg->msg_controllen) ||
50 __get_user(kmsg->msg_flags, &umsg->msg_flags))
51 return -EFAULT;
Catalin Marinas91edd092015-03-20 16:48:13 +000052
53 if (!uaddr)
54 kmsg->msg_namelen = 0;
55
56 if (kmsg->msg_namelen < 0)
57 return -EINVAL;
58
Dan Carpenter1661bf32013-10-03 00:27:20 +030059 if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))
Dan Carpenterdb31c552013-11-27 15:40:21 +030060 kmsg->msg_namelen = sizeof(struct sockaddr_storage);
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 kmsg->msg_control = compat_ptr(tmp3);
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
Al Viro08adb7d2014-11-10 20:23:13 -050063 if (save_addr)
64 *save_addr = compat_ptr(uaddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
Al Viro08adb7d2014-11-10 20:23:13 -050066 if (uaddr && kmsg->msg_namelen) {
67 if (!save_addr) {
68 err = move_addr_to_kernel(compat_ptr(uaddr),
69 kmsg->msg_namelen,
70 kmsg->msg_name);
Stephen Hemmingere71a4782007-04-10 20:10:33 -070071 if (err < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070072 return err;
73 }
Andrey Ryabinin40eea802014-07-26 21:26:58 +040074 } else {
Al Viro08adb7d2014-11-10 20:23:13 -050075 kmsg->msg_name = NULL;
76 kmsg->msg_namelen = 0;
Andrey Ryabinin40eea802014-07-26 21:26:58 +040077 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
Al Viroc0371da2014-11-24 10:42:55 -050079 if (nr_segs > UIO_MAXIOV)
Al Viro08449322014-11-09 22:33:45 -050080 return -EMSGSIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
tadeusz.struk@intel.com0345f932015-03-19 12:31:25 -070082 kmsg->msg_iocb = NULL;
83
Al Viroda184282015-03-21 19:29:06 -040084 return compat_import_iovec(save_addr ? READ : WRITE,
85 compat_ptr(uiov), nr_segs,
86 UIO_FASTIOV, iov, &kmsg->msg_iter);
Linus Torvalds1da177e2005-04-16 15:20:36 -070087}
88
89/* Bleech... */
90#define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32))
91
92#define CMSG_COMPAT_DATA(cmsg) \
93 ((void __user *)((char __user *)(cmsg) + CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr))))
94#define CMSG_COMPAT_SPACE(len) \
95 (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + CMSG_COMPAT_ALIGN(len))
96#define CMSG_COMPAT_LEN(len) \
97 (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + (len))
98
99#define CMSG_COMPAT_FIRSTHDR(msg) \
100 (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \
101 (struct compat_cmsghdr __user *)((msg)->msg_control) : \
102 (struct compat_cmsghdr __user *)NULL)
103
104#define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \
105 ((ucmlen) >= sizeof(struct compat_cmsghdr) && \
106 (ucmlen) <= (unsigned long) \
107 ((mhdr)->msg_controllen - \
108 ((char *)(ucmsg) - (char *)(mhdr)->msg_control)))
109
110static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg,
111 struct compat_cmsghdr __user *cmsg, int cmsg_len)
112{
113 char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len);
114 if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) >
115 msg->msg_controllen)
116 return NULL;
117 return (struct compat_cmsghdr __user *)ptr;
118}
119
120/* There is a lot of hair here because the alignment rules (and
121 * thus placement) of cmsg headers and length are different for
122 * 32-bit apps. -DaveM
123 */
Al Viro8920e8f2005-09-07 18:28:51 -0700124int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125 unsigned char *stackbuf, int stackbuf_size)
126{
127 struct compat_cmsghdr __user *ucmsg;
128 struct cmsghdr *kcmsg, *kcmsg_base;
129 compat_size_t ucmlen;
130 __kernel_size_t kcmlen, tmp;
Al Viro8920e8f2005-09-07 18:28:51 -0700131 int err = -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132
133 kcmlen = 0;
134 kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;
135 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700136 while (ucmsg != NULL) {
137 if (get_user(ucmlen, &ucmsg->cmsg_len))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 return -EFAULT;
139
140 /* Catch bogons. */
141 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
142 return -EINVAL;
143
144 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) +
145 CMSG_ALIGN(sizeof(struct cmsghdr)));
Al Viro8920e8f2005-09-07 18:28:51 -0700146 tmp = CMSG_ALIGN(tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 kcmlen += tmp;
148 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
149 }
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700150 if (kcmlen == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 return -EINVAL;
152
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
156 * from the user.
157 */
Al Viro8920e8f2005-09-07 18:28:51 -0700158 if (kcmlen > stackbuf_size)
159 kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL);
160 if (kcmsg == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 return -ENOBUFS;
162
163 /* Now copy them over neatly. */
164 memset(kcmsg, 0, kcmlen);
165 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700166 while (ucmsg != NULL) {
Al Viro8920e8f2005-09-07 18:28:51 -0700167 if (__get_user(ucmlen, &ucmsg->cmsg_len))
168 goto Efault;
169 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
170 goto Einval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) +
172 CMSG_ALIGN(sizeof(struct cmsghdr)));
Al Viro8920e8f2005-09-07 18:28:51 -0700173 if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp))
174 goto Einval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 kcmsg->cmsg_len = tmp;
Al Viro8920e8f2005-09-07 18:28:51 -0700176 tmp = CMSG_ALIGN(tmp);
177 if (__get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level) ||
178 __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type) ||
179 copy_from_user(CMSG_DATA(kcmsg),
180 CMSG_COMPAT_DATA(ucmsg),
181 (ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg)))))
182 goto Efault;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
184 /* Advance. */
Al Viro8920e8f2005-09-07 18:28:51 -0700185 kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
187 }
188
189 /* Ok, looks like we made it. Hook it up and return success. */
190 kmsg->msg_control = kcmsg_base;
191 kmsg->msg_controllen = kcmlen;
192 return 0;
193
Al Viro8920e8f2005-09-07 18:28:51 -0700194Einval:
195 err = -EINVAL;
196Efault:
197 if (kcmsg_base != (struct cmsghdr *)stackbuf)
198 sock_kfree_s(sk, kcmsg_base, kcmlen);
199 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200}
201
202int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
203{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
205 struct compat_cmsghdr cmhdr;
Jesper Juhl81881042012-07-22 11:37:20 +0000206 struct compat_timeval ctv;
207 struct compat_timespec cts[3];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 int cmlen;
209
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700210 if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 kmsg->msg_flags |= MSG_CTRUNC;
212 return 0; /* XXX: return error? check spec. */
213 }
214
H. J. Luee4fa232012-02-19 17:50:46 -0800215 if (!COMPAT_USE_64BIT_TIME) {
H. J. Luee4fa232012-02-19 17:50:46 -0800216 if (level == SOL_SOCKET && type == SCM_TIMESTAMP) {
217 struct timeval *tv = (struct timeval *)data;
218 ctv.tv_sec = tv->tv_sec;
219 ctv.tv_usec = tv->tv_usec;
220 data = &ctv;
221 len = sizeof(ctv);
Patrick Ohly20d49472009-02-12 05:03:38 +0000222 }
H. J. Luee4fa232012-02-19 17:50:46 -0800223 if (level == SOL_SOCKET &&
224 (type == SCM_TIMESTAMPNS || type == SCM_TIMESTAMPING)) {
225 int count = type == SCM_TIMESTAMPNS ? 1 : 3;
226 int i;
227 struct timespec *ts = (struct timespec *)data;
228 for (i = 0; i < count; i++) {
229 cts[i].tv_sec = ts[i].tv_sec;
230 cts[i].tv_nsec = ts[i].tv_nsec;
231 }
232 data = &cts;
233 len = sizeof(cts[0]) * count;
234 }
YOSHIFUJI Hideaki4768fbc2007-02-09 23:25:31 +0900235 }
236
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 cmlen = CMSG_COMPAT_LEN(len);
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700238 if (kmsg->msg_controllen < cmlen) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 kmsg->msg_flags |= MSG_CTRUNC;
240 cmlen = kmsg->msg_controllen;
241 }
242 cmhdr.cmsg_level = level;
243 cmhdr.cmsg_type = type;
244 cmhdr.cmsg_len = cmlen;
245
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700246 if (copy_to_user(cm, &cmhdr, sizeof cmhdr))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 return -EFAULT;
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700248 if (copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 return -EFAULT;
250 cmlen = CMSG_COMPAT_SPACE(len);
Wei Yongjun1ac70e72007-12-20 14:36:44 -0800251 if (kmsg->msg_controllen < cmlen)
252 cmlen = kmsg->msg_controllen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253 kmsg->msg_control += cmlen;
254 kmsg->msg_controllen -= cmlen;
255 return 0;
256}
257
258void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
259{
260 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
261 int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int);
262 int fdnum = scm->fp->count;
263 struct file **fp = scm->fp->fp;
264 int __user *cmfptr;
265 int err = 0, i;
266
267 if (fdnum < fdmax)
268 fdmax = fdnum;
269
270 for (i = 0, cmfptr = (int __user *) CMSG_COMPAT_DATA(cm); i < fdmax; i++, cmfptr++) {
271 int new_fd;
272 err = security_file_receive(fp[i]);
273 if (err)
274 break;
Ulrich Drepper4a195422007-07-15 23:40:34 -0700275 err = get_unused_fd_flags(MSG_CMSG_CLOEXEC & kmsg->msg_flags
276 ? O_CLOEXEC : 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277 if (err < 0)
278 break;
279 new_fd = err;
280 err = put_user(new_fd, cmfptr);
281 if (err) {
282 put_unused_fd(new_fd);
283 break;
284 }
285 /* Bump the usage count and install the file. */
Al Virocb0942b2012-08-27 14:48:26 -0400286 fd_install(new_fd, get_file(fp[i]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 }
288
289 if (i > 0) {
290 int cmlen = CMSG_COMPAT_LEN(i * sizeof(int));
Miklos Szeredieffee6a2006-10-09 21:42:14 -0700291 err = put_user(SOL_SOCKET, &cm->cmsg_level);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 if (!err)
293 err = put_user(SCM_RIGHTS, &cm->cmsg_type);
294 if (!err)
295 err = put_user(cmlen, &cm->cmsg_len);
296 if (!err) {
297 cmlen = CMSG_COMPAT_SPACE(i * sizeof(int));
298 kmsg->msg_control += cmlen;
299 kmsg->msg_controllen -= cmlen;
300 }
301 }
302 if (i < fdnum)
303 kmsg->msg_flags |= MSG_CTRUNC;
304
305 /*
306 * All of the files that fit in the message have had their
307 * usage counts incremented, so we just free the list.
308 */
309 __scm_destroy(scm);
310}
311
Willem de Bruijn719c44d2016-06-07 12:06:34 -0400312/* allocate a 64-bit sock_fprog on the user stack for duration of syscall. */
313struct sock_fprog __user *get_compat_bpf_fprog(char __user *optval)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314{
315 struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval;
YOSHIFUJI Hideaki4768fbc2007-02-09 23:25:31 +0900316 struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 compat_uptr_t ptr;
318 u16 len;
319
320 if (!access_ok(VERIFY_READ, fprog32, sizeof(*fprog32)) ||
321 !access_ok(VERIFY_WRITE, kfprog, sizeof(struct sock_fprog)) ||
322 __get_user(len, &fprog32->len) ||
323 __get_user(ptr, &fprog32->filter) ||
324 __put_user(len, &kfprog->len) ||
325 __put_user(compat_ptr(ptr), &kfprog->filter))
Willem de Bruijn719c44d2016-06-07 12:06:34 -0400326 return NULL;
327
328 return kfprog;
329}
330EXPORT_SYMBOL_GPL(get_compat_bpf_fprog);
331
332static int do_set_attach_filter(struct socket *sock, int level, int optname,
333 char __user *optval, unsigned int optlen)
334{
335 struct sock_fprog __user *kfprog;
336
337 kfprog = get_compat_bpf_fprog(optval);
338 if (!kfprog)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 return -EFAULT;
340
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800341 return sock_setsockopt(sock, level, optname, (char __user *)kfprog,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342 sizeof(struct sock_fprog));
343}
344
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800345static int do_set_sock_timeout(struct socket *sock, int level,
David S. Millerb7058842009-09-30 16:12:20 -0700346 int optname, char __user *optval, unsigned int optlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347{
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700348 struct compat_timeval __user *up = (struct compat_timeval __user *)optval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 struct timeval ktime;
350 mm_segment_t old_fs;
351 int err;
352
353 if (optlen < sizeof(*up))
354 return -EINVAL;
355 if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
356 __get_user(ktime.tv_sec, &up->tv_sec) ||
357 __get_user(ktime.tv_usec, &up->tv_usec))
358 return -EFAULT;
359 old_fs = get_fs();
360 set_fs(KERNEL_DS);
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700361 err = sock_setsockopt(sock, level, optname, (char *)&ktime, sizeof(ktime));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 set_fs(old_fs);
363
364 return err;
365}
366
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800367static int compat_sock_setsockopt(struct socket *sock, int level, int optname,
David S. Millerb7058842009-09-30 16:12:20 -0700368 char __user *optval, unsigned int optlen)
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800369{
Helge Deller19575982016-06-03 23:49:17 +0200370 if (optname == SO_ATTACH_FILTER ||
371 optname == SO_ATTACH_REUSEPORT_CBPF)
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800372 return do_set_attach_filter(sock, level, optname,
373 optval, optlen);
374 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
375 return do_set_sock_timeout(sock, level, optname, optval, optlen);
376
377 return sock_setsockopt(sock, level, optname, optval, optlen);
378}
379
Heiko Carstens361d93c2014-03-03 16:21:27 +0100380COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname,
381 char __user *, optval, unsigned int, optlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382{
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800383 int err;
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700384 struct socket *sock = sockfd_lookup(fd, &err);
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800385
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700386 if (sock) {
387 err = security_socket_setsockopt(sock, level, optname);
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800388 if (err) {
389 sockfd_put(sock);
390 return err;
391 }
392
393 if (level == SOL_SOCKET)
394 err = compat_sock_setsockopt(sock, level,
395 optname, optval, optlen);
396 else if (sock->ops->compat_setsockopt)
397 err = sock->ops->compat_setsockopt(sock, level,
398 optname, optval, optlen);
399 else
400 err = sock->ops->setsockopt(sock, level,
401 optname, optval, optlen);
402 sockfd_put(sock);
403 }
404 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405}
406
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800407static int do_get_sock_timeout(struct socket *sock, int level, int optname,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 char __user *optval, int __user *optlen)
409{
410 struct compat_timeval __user *up;
411 struct timeval ktime;
412 mm_segment_t old_fs;
413 int len, err;
414
415 up = (struct compat_timeval __user *) optval;
416 if (get_user(len, optlen))
417 return -EFAULT;
418 if (len < sizeof(*up))
419 return -EINVAL;
420 len = sizeof(ktime);
421 old_fs = get_fs();
422 set_fs(KERNEL_DS);
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800423 err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 set_fs(old_fs);
425
426 if (!err) {
427 if (put_user(sizeof(*up), optlen) ||
428 !access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
429 __put_user(ktime.tv_sec, &up->tv_sec) ||
430 __put_user(ktime.tv_usec, &up->tv_usec))
431 err = -EFAULT;
432 }
433 return err;
434}
435
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800436static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
437 char __user *optval, int __user *optlen)
438{
439 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
440 return do_get_sock_timeout(sock, level, optname, optval, optlen);
441 return sock_getsockopt(sock, level, optname, optval, optlen);
442}
443
Shaun Pereiraf0ac2612006-03-21 23:59:39 -0800444int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
445{
H. J. Luee4fa232012-02-19 17:50:46 -0800446 struct compat_timeval __user *ctv;
447 int err;
Eric Dumazetb7aa0bf2007-04-19 16:16:32 -0700448 struct timeval tv;
Shaun Pereiraf0ac2612006-03-21 23:59:39 -0800449
H. J. Luee4fa232012-02-19 17:50:46 -0800450 if (COMPAT_USE_64BIT_TIME)
451 return sock_get_timestamp(sk, userstamp);
452
453 ctv = (struct compat_timeval __user *) userstamp;
454 err = -ENOENT;
Shaun Pereiraf0ac2612006-03-21 23:59:39 -0800455 if (!sock_flag(sk, SOCK_TIMESTAMP))
Patrick Ohly20d49472009-02-12 05:03:38 +0000456 sock_enable_timestamp(sk, SOCK_TIMESTAMP);
Eric Dumazetb7aa0bf2007-04-19 16:16:32 -0700457 tv = ktime_to_timeval(sk->sk_stamp);
458 if (tv.tv_sec == -1)
Shaun Pereiraf0ac2612006-03-21 23:59:39 -0800459 return err;
Eric Dumazetb7aa0bf2007-04-19 16:16:32 -0700460 if (tv.tv_sec == 0) {
461 sk->sk_stamp = ktime_get_real();
462 tv = ktime_to_timeval(sk->sk_stamp);
463 }
464 err = 0;
465 if (put_user(tv.tv_sec, &ctv->tv_sec) ||
466 put_user(tv.tv_usec, &ctv->tv_usec))
Shaun Pereiraf0ac2612006-03-21 23:59:39 -0800467 err = -EFAULT;
468 return err;
469}
470EXPORT_SYMBOL(compat_sock_get_timestamp);
471
Eric Dumazetae40eb12007-03-18 17:33:16 -0700472int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
473{
H. J. Luee4fa232012-02-19 17:50:46 -0800474 struct compat_timespec __user *ctv;
475 int err;
Eric Dumazetae40eb12007-03-18 17:33:16 -0700476 struct timespec ts;
477
H. J. Luee4fa232012-02-19 17:50:46 -0800478 if (COMPAT_USE_64BIT_TIME)
479 return sock_get_timestampns (sk, userstamp);
480
481 ctv = (struct compat_timespec __user *) userstamp;
482 err = -ENOENT;
Eric Dumazetae40eb12007-03-18 17:33:16 -0700483 if (!sock_flag(sk, SOCK_TIMESTAMP))
Patrick Ohly20d49472009-02-12 05:03:38 +0000484 sock_enable_timestamp(sk, SOCK_TIMESTAMP);
Eric Dumazetae40eb12007-03-18 17:33:16 -0700485 ts = ktime_to_timespec(sk->sk_stamp);
486 if (ts.tv_sec == -1)
487 return err;
488 if (ts.tv_sec == 0) {
489 sk->sk_stamp = ktime_get_real();
490 ts = ktime_to_timespec(sk->sk_stamp);
491 }
492 err = 0;
493 if (put_user(ts.tv_sec, &ctv->tv_sec) ||
494 put_user(ts.tv_nsec, &ctv->tv_nsec))
495 err = -EFAULT;
496 return err;
497}
498EXPORT_SYMBOL(compat_sock_get_timestampns);
499
Heiko Carstens361d93c2014-03-03 16:21:27 +0100500COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname,
501 char __user *, optval, int __user *, optlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502{
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800503 int err;
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700504 struct socket *sock = sockfd_lookup(fd, &err);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700506 if (sock) {
507 err = security_socket_getsockopt(sock, level, optname);
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800508 if (err) {
509 sockfd_put(sock);
510 return err;
511 }
512
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);
519 else
520 err = sock->ops->getsockopt(sock, level,
521 optname, optval, optlen);
522 sockfd_put(sock);
523 }
524 return err;
525}
David L Stevensdae50292008-04-27 01:06:07 -0700526
527struct compat_group_req {
528 __u32 gr_interface;
529 struct __kernel_sockaddr_storage gr_group
Ameen Alie099b2d2015-02-22 23:40:36 +0200530 __aligned(4);
Eric Dumazetbc105022010-06-03 03:21:52 -0700531} __packed;
David L Stevensdae50292008-04-27 01:06:07 -0700532
533struct compat_group_source_req {
534 __u32 gsr_interface;
535 struct __kernel_sockaddr_storage gsr_group
Ameen Alie099b2d2015-02-22 23:40:36 +0200536 __aligned(4);
David L Stevensdae50292008-04-27 01:06:07 -0700537 struct __kernel_sockaddr_storage gsr_source
Ameen Alie099b2d2015-02-22 23:40:36 +0200538 __aligned(4);
Eric Dumazetbc105022010-06-03 03:21:52 -0700539} __packed;
David L Stevensdae50292008-04-27 01:06:07 -0700540
541struct compat_group_filter {
542 __u32 gf_interface;
543 struct __kernel_sockaddr_storage gf_group
Ameen Alie099b2d2015-02-22 23:40:36 +0200544 __aligned(4);
David L Stevensdae50292008-04-27 01:06:07 -0700545 __u32 gf_fmode;
546 __u32 gf_numsrc;
547 struct __kernel_sockaddr_storage gf_slist[1]
Ameen Alie099b2d2015-02-22 23:40:36 +0200548 __aligned(4);
Eric Dumazetbc105022010-06-03 03:21:52 -0700549} __packed;
David L Stevensdae50292008-04-27 01:06:07 -0700550
David L Stevensbe666e02008-04-29 03:23:00 -0700551#define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \
552 sizeof(struct __kernel_sockaddr_storage))
553
David L Stevensdae50292008-04-27 01:06:07 -0700554
555int compat_mc_setsockopt(struct sock *sock, int level, int optname,
David S. Millerb7058842009-09-30 16:12:20 -0700556 char __user *optval, unsigned int optlen,
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700557 int (*setsockopt)(struct sock *, int, int, char __user *, unsigned int))
David L Stevensdae50292008-04-27 01:06:07 -0700558{
559 char __user *koptval = optval;
560 int koptlen = optlen;
561
562 switch (optname) {
563 case MCAST_JOIN_GROUP:
564 case MCAST_LEAVE_GROUP:
565 {
566 struct compat_group_req __user *gr32 = (void *)optval;
567 struct group_req __user *kgr =
568 compat_alloc_user_space(sizeof(struct group_req));
569 u32 interface;
570
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)))
577 return -EFAULT;
578 koptval = (char __user *)kgr;
579 koptlen = sizeof(struct group_req);
580 break;
581 }
582 case MCAST_JOIN_SOURCE_GROUP:
583 case MCAST_LEAVE_SOURCE_GROUP:
584 case MCAST_BLOCK_SOURCE:
585 case MCAST_UNBLOCK_SOURCE:
586 {
587 struct compat_group_source_req __user *gsr32 = (void *)optval;
David L Stevensbe666e02008-04-29 03:23:00 -0700588 struct group_source_req __user *kgsr = compat_alloc_user_space(
David L Stevensdae50292008-04-27 01:06:07 -0700589 sizeof(struct group_source_req));
590 u32 interface;
591
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)))
601 return -EFAULT;
602 koptval = (char __user *)kgsr;
603 koptlen = sizeof(struct group_source_req);
604 break;
605 }
606 case MCAST_MSFILTER:
607 {
608 struct compat_group_filter __user *gf32 = (void *)optval;
David L Stevensbe666e02008-04-29 03:23:00 -0700609 struct group_filter __user *kgf;
David L Stevensdae50292008-04-27 01:06:07 -0700610 u32 interface, fmode, numsrc;
611
David L Stevensbe666e02008-04-29 03:23:00 -0700612 if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) ||
David L Stevensdae50292008-04-27 01:06:07 -0700613 __get_user(interface, &gf32->gf_interface) ||
614 __get_user(fmode, &gf32->gf_fmode) ||
615 __get_user(numsrc, &gf32->gf_numsrc))
616 return -EFAULT;
617 koptlen = optlen + sizeof(struct group_filter) -
618 sizeof(struct compat_group_filter);
619 if (koptlen < GROUP_FILTER_SIZE(numsrc))
620 return -EINVAL;
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)) ||
David L Stevensbe666e02008-04-29 03:23:00 -0700628 (numsrc && copy_in_user(kgf->gf_slist, gf32->gf_slist,
David L Stevensdae50292008-04-27 01:06:07 -0700629 numsrc * sizeof(kgf->gf_slist[0]))))
630 return -EFAULT;
631 koptval = (char __user *)kgf;
632 break;
633 }
634
635 default:
636 break;
637 }
638 return setsockopt(sock, level, optname, koptval, koptlen);
639}
David L Stevensdae50292008-04-27 01:06:07 -0700640EXPORT_SYMBOL(compat_mc_setsockopt);
641
David L Stevens42908c62008-04-29 03:23:22 -0700642int compat_mc_getsockopt(struct sock *sock, int level, int optname,
643 char __user *optval, int __user *optlen,
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700644 int (*getsockopt)(struct sock *, int, int, char __user *, int __user *))
David L Stevens42908c62008-04-29 03:23:22 -0700645{
646 struct compat_group_filter __user *gf32 = (void *)optval;
647 struct group_filter __user *kgf;
648 int __user *koptlen;
649 u32 interface, fmode, numsrc;
650 int klen, ulen, err;
651
652 if (optname != MCAST_MSFILTER)
653 return getsockopt(sock, level, optname, optval, optlen);
654
655 koptlen = compat_alloc_user_space(sizeof(*koptlen));
656 if (!access_ok(VERIFY_READ, optlen, sizeof(*optlen)) ||
657 __get_user(ulen, optlen))
658 return -EFAULT;
659
660 /* adjust len for pad */
661 klen = ulen + sizeof(*kgf) - sizeof(*gf32);
662
663 if (klen < GROUP_FILTER_SIZE(0))
664 return -EINVAL;
665
666 if (!access_ok(VERIFY_WRITE, koptlen, sizeof(*koptlen)) ||
667 __put_user(klen, koptlen))
668 return -EFAULT;
669
670 /* have to allow space for previous compat_alloc_user_space, too */
671 kgf = compat_alloc_user_space(klen+sizeof(*optlen));
672
673 if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) ||
674 __get_user(interface, &gf32->gf_interface) ||
675 __get_user(fmode, &gf32->gf_fmode) ||
676 __get_user(numsrc, &gf32->gf_numsrc) ||
677 __put_user(interface, &kgf->gf_interface) ||
678 __put_user(fmode, &kgf->gf_fmode) ||
679 __put_user(numsrc, &kgf->gf_numsrc) ||
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700680 copy_in_user(&kgf->gf_group, &gf32->gf_group, sizeof(kgf->gf_group)))
David L Stevens42908c62008-04-29 03:23:22 -0700681 return -EFAULT;
682
683 err = getsockopt(sock, level, optname, (char __user *)kgf, koptlen);
684 if (err)
685 return err;
686
687 if (!access_ok(VERIFY_READ, koptlen, sizeof(*koptlen)) ||
688 __get_user(klen, koptlen))
689 return -EFAULT;
690
691 ulen = klen - (sizeof(*kgf)-sizeof(*gf32));
692
693 if (!access_ok(VERIFY_WRITE, optlen, sizeof(*optlen)) ||
694 __put_user(ulen, optlen))
695 return -EFAULT;
696
697 if (!access_ok(VERIFY_READ, kgf, klen) ||
698 !access_ok(VERIFY_WRITE, gf32, ulen) ||
699 __get_user(interface, &kgf->gf_interface) ||
700 __get_user(fmode, &kgf->gf_fmode) ||
701 __get_user(numsrc, &kgf->gf_numsrc) ||
702 __put_user(interface, &gf32->gf_interface) ||
703 __put_user(fmode, &gf32->gf_fmode) ||
704 __put_user(numsrc, &gf32->gf_numsrc))
705 return -EFAULT;
706 if (numsrc) {
707 int copylen;
708
709 klen -= GROUP_FILTER_SIZE(0);
710 copylen = numsrc * sizeof(gf32->gf_slist[0]);
711 if (copylen > klen)
712 copylen = klen;
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700713 if (copy_in_user(gf32->gf_slist, kgf->gf_slist, copylen))
David L Stevens42908c62008-04-29 03:23:22 -0700714 return -EFAULT;
715 }
716 return err;
717}
David L Stevens42908c62008-04-29 03:23:22 -0700718EXPORT_SYMBOL(compat_mc_getsockopt);
719
David L Stevensdae50292008-04-27 01:06:07 -0700720
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721/* Argument list sizes for compat_sys_socketcall */
722#define AL(x) ((x) * sizeof(u32))
Anton Blanchard228e5482011-05-02 20:21:35 +0000723static unsigned char nas[21] = {
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700724 AL(0), AL(3), AL(3), AL(3), AL(2), AL(3),
725 AL(3), AL(3), AL(4), AL(4), AL(4), AL(6),
726 AL(6), AL(2), AL(5), AL(5), AL(3), AL(3),
Anton Blanchard228e5482011-05-02 20:21:35 +0000727 AL(4), AL(5), AL(4)
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700728};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729#undef AL
730
Heiko Carstens361d93c2014-03-03 16:21:27 +0100731COMPAT_SYSCALL_DEFINE3(sendmsg, int, fd, struct compat_msghdr __user *, msg, unsigned int, flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732{
Al Viro666547f2014-04-06 14:03:05 -0400733 return __sys_sendmsg(fd, (struct user_msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734}
735
Heiko Carstens361d93c2014-03-03 16:21:27 +0100736COMPAT_SYSCALL_DEFINE4(sendmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
737 unsigned int, vlen, unsigned int, flags)
Anton Blanchard228e5482011-05-02 20:21:35 +0000738{
739 return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
740 flags | MSG_CMSG_COMPAT);
741}
742
Heiko Carstens361d93c2014-03-03 16:21:27 +0100743COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg, unsigned int, flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744{
Al Viro666547f2014-04-06 14:03:05 -0400745 return __sys_recvmsg(fd, (struct user_msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746}
747
Heiko Carstens3a49a0f2014-03-04 17:09:57 +0100748COMPAT_SYSCALL_DEFINE4(recv, int, fd, void __user *, buf, compat_size_t, len, unsigned int, flags)
Johannes Berg1dacc762009-07-01 11:26:02 +0000749{
750 return sys_recv(fd, buf, len, flags | MSG_CMSG_COMPAT);
751}
752
Heiko Carstens3a49a0f2014-03-04 17:09:57 +0100753COMPAT_SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, buf, compat_size_t, len,
754 unsigned int, flags, struct sockaddr __user *, addr,
755 int __user *, addrlen)
Johannes Berg1dacc762009-07-01 11:26:02 +0000756{
757 return sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr, addrlen);
758}
759
Heiko Carstens361d93c2014-03-03 16:21:27 +0100760COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
761 unsigned int, vlen, unsigned int, flags,
762 struct compat_timespec __user *, timeout)
Arnaldo Carvalho de Meloa2e27252009-10-12 23:40:10 -0700763{
764 int datagrams;
765 struct timespec ktspec;
Arnaldo Carvalho de Meloa2e27252009-10-12 23:40:10 -0700766
Jean-Mickael Guerin5b231362009-12-01 07:52:16 +0000767 if (timeout == NULL)
768 return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
769 flags | MSG_CMSG_COMPAT, NULL);
770
PaX Team2def2ef2014-01-30 16:59:25 -0800771 if (compat_get_timespec(&ktspec, timeout))
Arnaldo Carvalho de Meloa2e27252009-10-12 23:40:10 -0700772 return -EFAULT;
773
774 datagrams = __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
775 flags | MSG_CMSG_COMPAT, &ktspec);
PaX Team2def2ef2014-01-30 16:59:25 -0800776 if (datagrams > 0 && compat_put_timespec(&ktspec, timeout))
Arnaldo Carvalho de Meloa2e27252009-10-12 23:40:10 -0700777 datagrams = -EFAULT;
778
779 return datagrams;
780}
781
Heiko Carstens361d93c2014-03-03 16:21:27 +0100782COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783{
784 int ret;
785 u32 a[6];
786 u32 a0, a1;
YOSHIFUJI Hideaki4768fbc2007-02-09 23:25:31 +0900787
Anton Blanchard228e5482011-05-02 20:21:35 +0000788 if (call < SYS_SOCKET || call > SYS_SENDMMSG)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789 return -EINVAL;
790 if (copy_from_user(a, args, nas[call]))
791 return -EFAULT;
792 a0 = a[0];
793 a1 = a[1];
YOSHIFUJI Hideaki4768fbc2007-02-09 23:25:31 +0900794
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700795 switch (call) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796 case SYS_SOCKET:
797 ret = sys_socket(a0, a1, a[2]);
798 break;
799 case SYS_BIND:
800 ret = sys_bind(a0, compat_ptr(a1), a[2]);
801 break;
802 case SYS_CONNECT:
803 ret = sys_connect(a0, compat_ptr(a1), a[2]);
804 break;
805 case SYS_LISTEN:
806 ret = sys_listen(a0, a1);
807 break;
808 case SYS_ACCEPT:
Ulrich Drepperde11def2008-11-19 15:36:14 -0800809 ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 break;
811 case SYS_GETSOCKNAME:
812 ret = sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2]));
813 break;
814 case SYS_GETPEERNAME:
815 ret = sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2]));
816 break;
817 case SYS_SOCKETPAIR:
818 ret = sys_socketpair(a0, a1, a[2], compat_ptr(a[3]));
819 break;
820 case SYS_SEND:
821 ret = sys_send(a0, compat_ptr(a1), a[2], a[3]);
822 break;
823 case SYS_SENDTO:
824 ret = sys_sendto(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), a[5]);
825 break;
826 case SYS_RECV:
Johannes Berg1dacc762009-07-01 11:26:02 +0000827 ret = compat_sys_recv(a0, compat_ptr(a1), a[2], a[3]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828 break;
829 case SYS_RECVFROM:
Johannes Berg1dacc762009-07-01 11:26:02 +0000830 ret = compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3],
831 compat_ptr(a[4]), compat_ptr(a[5]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832 break;
833 case SYS_SHUTDOWN:
Eric Dumazetc6d409c2010-06-03 20:03:40 -0700834 ret = sys_shutdown(a0, a1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835 break;
836 case SYS_SETSOCKOPT:
837 ret = compat_sys_setsockopt(a0, a1, a[2],
838 compat_ptr(a[3]), a[4]);
839 break;
840 case SYS_GETSOCKOPT:
841 ret = compat_sys_getsockopt(a0, a1, a[2],
842 compat_ptr(a[3]), compat_ptr(a[4]));
843 break;
844 case SYS_SENDMSG:
845 ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]);
846 break;
Anton Blanchard228e5482011-05-02 20:21:35 +0000847 case SYS_SENDMMSG:
848 ret = compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]);
849 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850 case SYS_RECVMSG:
851 ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
852 break;
Arnaldo Carvalho de Meloa2e27252009-10-12 23:40:10 -0700853 case SYS_RECVMMSG:
854 ret = compat_sys_recvmmsg(a0, compat_ptr(a1), a[2], a[3],
855 compat_ptr(a[4]));
856 break;
Ulrich Drepperde11def2008-11-19 15:36:14 -0800857 case SYS_ACCEPT4:
858 ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]);
Ulrich Drepperaaca0bd2008-07-23 21:29:20 -0700859 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860 default:
861 ret = -EINVAL;
862 break;
863 }
864 return ret;
865}