Commit | Line | Data |
---|---|---|
457c8996 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
4768fbcb | 2 | /* |
1da177e4 LT |
3 | * 32bit Socket syscall emulation. Based on arch/sparc64/kernel/sys_sparc32.c. |
4 | * | |
5 | * Copyright (C) 2000 VA Linux Co | |
6 | * Copyright (C) 2000 Don Dugger <n0ano@valinux.com> | |
7 | * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com> | |
8 | * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) | |
9 | * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) | |
10 | * Copyright (C) 2000 Hewlett-Packard Co. | |
11 | * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com> | |
4768fbcb | 12 | * Copyright (C) 2000,2001 Andi Kleen, SuSE Labs |
1da177e4 LT |
13 | */ |
14 | ||
15 | #include <linux/kernel.h> | |
5a0e3ad6 | 16 | #include <linux/gfp.h> |
1da177e4 | 17 | #include <linux/fs.h> |
1da177e4 LT |
18 | #include <linux/types.h> |
19 | #include <linux/file.h> | |
20 | #include <linux/icmpv6.h> | |
21 | #include <linux/socket.h> | |
22 | #include <linux/syscalls.h> | |
23 | #include <linux/filter.h> | |
24 | #include <linux/compat.h> | |
1da177e4 | 25 | #include <linux/security.h> |
62bc306e | 26 | #include <linux/audit.h> |
bc3b2d7f | 27 | #include <linux/export.h> |
1da177e4 LT |
28 | |
29 | #include <net/scm.h> | |
30 | #include <net/sock.h> | |
dae50295 DS |
31 | #include <net/ip.h> |
32 | #include <net/ipv6.h> | |
7c0f6ba6 | 33 | #include <linux/uaccess.h> |
1da177e4 LT |
34 | #include <net/compat.h> |
35 | ||
0a384abf | 36 | int __get_compat_msghdr(struct msghdr *kmsg, |
72c531f8 DY |
37 | struct compat_msghdr *msg, |
38 | struct sockaddr __user **save_addr) | |
1da177e4 | 39 | { |
08adb7da | 40 | ssize_t err; |
1da177e4 | 41 | |
72c531f8 DY |
42 | kmsg->msg_flags = msg->msg_flags; |
43 | kmsg->msg_namelen = msg->msg_namelen; | |
5da028a8 | 44 | |
72c531f8 | 45 | if (!msg->msg_name) |
91edd096 CM |
46 | kmsg->msg_namelen = 0; |
47 | ||
48 | if (kmsg->msg_namelen < 0) | |
49 | return -EINVAL; | |
50 | ||
1661bf36 | 51 | if (kmsg->msg_namelen > sizeof(struct sockaddr_storage)) |
db31c55a | 52 | kmsg->msg_namelen = sizeof(struct sockaddr_storage); |
5da028a8 | 53 | |
1f466e1f | 54 | kmsg->msg_control_is_user = true; |
72c531f8 DY |
55 | kmsg->msg_control_user = compat_ptr(msg->msg_control); |
56 | kmsg->msg_controllen = msg->msg_controllen; | |
1da177e4 | 57 | |
08adb7da | 58 | if (save_addr) |
72c531f8 | 59 | *save_addr = compat_ptr(msg->msg_name); |
1da177e4 | 60 | |
72c531f8 | 61 | if (msg->msg_name && kmsg->msg_namelen) { |
08adb7da | 62 | if (!save_addr) { |
72c531f8 | 63 | err = move_addr_to_kernel(compat_ptr(msg->msg_name), |
08adb7da AV |
64 | kmsg->msg_namelen, |
65 | kmsg->msg_name); | |
e71a4783 | 66 | if (err < 0) |
1da177e4 LT |
67 | return err; |
68 | } | |
40eea803 | 69 | } else { |
08adb7da AV |
70 | kmsg->msg_name = NULL; |
71 | kmsg->msg_namelen = 0; | |
40eea803 | 72 | } |
1da177e4 | 73 | |
72c531f8 | 74 | if (msg->msg_iovlen > UIO_MAXIOV) |
08449320 AV |
75 | return -EMSGSIZE; |
76 | ||
0345f931 | 77 | kmsg->msg_iocb = NULL; |
7c701d92 | 78 | kmsg->msg_ubuf = NULL; |
0a384abf JA |
79 | return 0; |
80 | } | |
81 | ||
82 | int get_compat_msghdr(struct msghdr *kmsg, | |
83 | struct compat_msghdr __user *umsg, | |
84 | struct sockaddr __user **save_addr, | |
85 | struct iovec **iov) | |
86 | { | |
72c531f8 | 87 | struct compat_msghdr msg; |
0a384abf JA |
88 | ssize_t err; |
89 | ||
72c531f8 DY |
90 | if (copy_from_user(&msg, umsg, sizeof(*umsg))) |
91 | return -EFAULT; | |
92 | ||
4f6a94d3 | 93 | err = __get_compat_msghdr(kmsg, &msg, save_addr); |
0a384abf JA |
94 | if (err) |
95 | return err; | |
0345f931 | 96 | |
72c531f8 | 97 | err = import_iovec(save_addr ? READ : WRITE, compat_ptr(msg.msg_iov), msg.msg_iovlen, |
89cd35c5 | 98 | UIO_FASTIOV, iov, &kmsg->msg_iter); |
87e5e6da | 99 | return err < 0 ? err : 0; |
1da177e4 LT |
100 | } |
101 | ||
102 | /* Bleech... */ | |
103 | #define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32)) | |
104 | ||
105 | #define CMSG_COMPAT_DATA(cmsg) \ | |
1ff8cebf | 106 | ((void __user *)((char __user *)(cmsg) + sizeof(struct compat_cmsghdr))) |
1da177e4 | 107 | #define CMSG_COMPAT_SPACE(len) \ |
1ff8cebf | 108 | (sizeof(struct compat_cmsghdr) + CMSG_COMPAT_ALIGN(len)) |
1da177e4 | 109 | #define CMSG_COMPAT_LEN(len) \ |
1ff8cebf | 110 | (sizeof(struct compat_cmsghdr) + (len)) |
1da177e4 LT |
111 | |
112 | #define CMSG_COMPAT_FIRSTHDR(msg) \ | |
113 | (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \ | |
114 | (struct compat_cmsghdr __user *)((msg)->msg_control) : \ | |
115 | (struct compat_cmsghdr __user *)NULL) | |
116 | ||
117 | #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \ | |
118 | ((ucmlen) >= sizeof(struct compat_cmsghdr) && \ | |
119 | (ucmlen) <= (unsigned long) \ | |
120 | ((mhdr)->msg_controllen - \ | |
1f466e1f | 121 | ((char __user *)(ucmsg) - (char __user *)(mhdr)->msg_control_user))) |
1da177e4 LT |
122 | |
123 | static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg, | |
124 | struct compat_cmsghdr __user *cmsg, int cmsg_len) | |
125 | { | |
126 | char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len); | |
127 | if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) > | |
128 | msg->msg_controllen) | |
129 | return NULL; | |
130 | return (struct compat_cmsghdr __user *)ptr; | |
131 | } | |
132 | ||
133 | /* There is a lot of hair here because the alignment rules (and | |
134 | * thus placement) of cmsg headers and length are different for | |
135 | * 32-bit apps. -DaveM | |
136 | */ | |
8920e8f9 | 137 | int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk, |
1da177e4 LT |
138 | unsigned char *stackbuf, int stackbuf_size) |
139 | { | |
140 | struct compat_cmsghdr __user *ucmsg; | |
141 | struct cmsghdr *kcmsg, *kcmsg_base; | |
142 | compat_size_t ucmlen; | |
143 | __kernel_size_t kcmlen, tmp; | |
8920e8f9 | 144 | int err = -EFAULT; |
1da177e4 | 145 | |
ac4340fc DM |
146 | BUILD_BUG_ON(sizeof(struct compat_cmsghdr) != |
147 | CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr))); | |
148 | ||
1da177e4 LT |
149 | kcmlen = 0; |
150 | kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf; | |
151 | ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); | |
e71a4783 SH |
152 | while (ucmsg != NULL) { |
153 | if (get_user(ucmlen, &ucmsg->cmsg_len)) | |
1da177e4 LT |
154 | return -EFAULT; |
155 | ||
156 | /* Catch bogons. */ | |
157 | if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg)) | |
158 | return -EINVAL; | |
159 | ||
1ff8cebf | 160 | tmp = ((ucmlen - sizeof(*ucmsg)) + sizeof(struct cmsghdr)); |
8920e8f9 | 161 | tmp = CMSG_ALIGN(tmp); |
1da177e4 LT |
162 | kcmlen += tmp; |
163 | ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen); | |
164 | } | |
e71a4783 | 165 | if (kcmlen == 0) |
1da177e4 LT |
166 | return -EINVAL; |
167 | ||
168 | /* The kcmlen holds the 64-bit version of the control length. | |
169 | * It may not be modified as we do not stick it into the kmsg | |
170 | * until we have successfully copied over all of the data | |
171 | * from the user. | |
172 | */ | |
8920e8f9 AV |
173 | if (kcmlen > stackbuf_size) |
174 | kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL); | |
175 | if (kcmsg == NULL) | |
49251cd0 | 176 | return -ENOMEM; |
1da177e4 LT |
177 | |
178 | /* Now copy them over neatly. */ | |
179 | memset(kcmsg, 0, kcmlen); | |
180 | ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); | |
e71a4783 | 181 | while (ucmsg != NULL) { |
547ce4cf AV |
182 | struct compat_cmsghdr cmsg; |
183 | if (copy_from_user(&cmsg, ucmsg, sizeof(cmsg))) | |
8920e8f9 | 184 | goto Efault; |
547ce4cf | 185 | if (!CMSG_COMPAT_OK(cmsg.cmsg_len, ucmsg, kmsg)) |
8920e8f9 | 186 | goto Einval; |
547ce4cf | 187 | tmp = ((cmsg.cmsg_len - sizeof(*ucmsg)) + sizeof(struct cmsghdr)); |
8920e8f9 AV |
188 | if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp)) |
189 | goto Einval; | |
1da177e4 | 190 | kcmsg->cmsg_len = tmp; |
547ce4cf AV |
191 | kcmsg->cmsg_level = cmsg.cmsg_level; |
192 | kcmsg->cmsg_type = cmsg.cmsg_type; | |
8920e8f9 | 193 | tmp = CMSG_ALIGN(tmp); |
547ce4cf | 194 | if (copy_from_user(CMSG_DATA(kcmsg), |
8920e8f9 | 195 | CMSG_COMPAT_DATA(ucmsg), |
547ce4cf | 196 | (cmsg.cmsg_len - sizeof(*ucmsg)))) |
8920e8f9 | 197 | goto Efault; |
1da177e4 LT |
198 | |
199 | /* Advance. */ | |
8920e8f9 | 200 | kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp); |
181964e6 | 201 | ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, cmsg.cmsg_len); |
1da177e4 LT |
202 | } |
203 | ||
c2a64bb9 MX |
204 | /* |
205 | * check the length of messages copied in is the same as the | |
206 | * what we get from the first loop | |
207 | */ | |
208 | if ((char *)kcmsg - (char *)kcmsg_base != kcmlen) | |
209 | goto Einval; | |
210 | ||
1da177e4 LT |
211 | /* Ok, looks like we made it. Hook it up and return success. */ |
212 | kmsg->msg_control = kcmsg_base; | |
213 | kmsg->msg_controllen = kcmlen; | |
214 | return 0; | |
215 | ||
8920e8f9 AV |
216 | Einval: |
217 | err = -EINVAL; | |
218 | Efault: | |
219 | if (kcmsg_base != (struct cmsghdr *)stackbuf) | |
220 | sock_kfree_s(sk, kcmsg_base, kcmlen); | |
221 | return err; | |
1da177e4 LT |
222 | } |
223 | ||
224 | int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data) | |
225 | { | |
1da177e4 LT |
226 | struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; |
227 | struct compat_cmsghdr cmhdr; | |
13c6ee2a DD |
228 | struct old_timeval32 ctv; |
229 | struct old_timespec32 cts[3]; | |
1da177e4 LT |
230 | int cmlen; |
231 | ||
e71a4783 | 232 | if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) { |
1da177e4 LT |
233 | kmsg->msg_flags |= MSG_CTRUNC; |
234 | return 0; /* XXX: return error? check spec. */ | |
235 | } | |
236 | ||
ee4fa23c | 237 | if (!COMPAT_USE_64BIT_TIME) { |
7f1bc6e9 | 238 | if (level == SOL_SOCKET && type == SO_TIMESTAMP_OLD) { |
13c6ee2a | 239 | struct __kernel_old_timeval *tv = (struct __kernel_old_timeval *)data; |
ee4fa23c L |
240 | ctv.tv_sec = tv->tv_sec; |
241 | ctv.tv_usec = tv->tv_usec; | |
242 | data = &ctv; | |
243 | len = sizeof(ctv); | |
244 | } | |
245 | if (level == SOL_SOCKET && | |
7f1bc6e9 DD |
246 | (type == SO_TIMESTAMPNS_OLD || type == SO_TIMESTAMPING_OLD)) { |
247 | int count = type == SO_TIMESTAMPNS_OLD ? 1 : 3; | |
ee4fa23c | 248 | int i; |
df1b4ba9 | 249 | struct __kernel_old_timespec *ts = data; |
ee4fa23c L |
250 | for (i = 0; i < count; i++) { |
251 | cts[i].tv_sec = ts[i].tv_sec; | |
252 | cts[i].tv_nsec = ts[i].tv_nsec; | |
253 | } | |
254 | data = &cts; | |
255 | len = sizeof(cts[0]) * count; | |
20d49473 | 256 | } |
4768fbcb YH |
257 | } |
258 | ||
1da177e4 | 259 | cmlen = CMSG_COMPAT_LEN(len); |
e71a4783 | 260 | if (kmsg->msg_controllen < cmlen) { |
1da177e4 LT |
261 | kmsg->msg_flags |= MSG_CTRUNC; |
262 | cmlen = kmsg->msg_controllen; | |
263 | } | |
264 | cmhdr.cmsg_level = level; | |
265 | cmhdr.cmsg_type = type; | |
266 | cmhdr.cmsg_len = cmlen; | |
267 | ||
e71a4783 | 268 | if (copy_to_user(cm, &cmhdr, sizeof cmhdr)) |
1da177e4 | 269 | return -EFAULT; |
e71a4783 | 270 | if (copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr))) |
1da177e4 LT |
271 | return -EFAULT; |
272 | cmlen = CMSG_COMPAT_SPACE(len); | |
1ac70e7a WY |
273 | if (kmsg->msg_controllen < cmlen) |
274 | cmlen = kmsg->msg_controllen; | |
1da177e4 LT |
275 | kmsg->msg_control += cmlen; |
276 | kmsg->msg_controllen -= cmlen; | |
277 | return 0; | |
278 | } | |
279 | ||
c0029de5 | 280 | static int scm_max_fds_compat(struct msghdr *msg) |
1da177e4 | 281 | { |
c0029de5 KC |
282 | if (msg->msg_controllen <= sizeof(struct compat_cmsghdr)) |
283 | return 0; | |
284 | return (msg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int); | |
285 | } | |
1da177e4 | 286 | |
c0029de5 KC |
287 | void scm_detach_fds_compat(struct msghdr *msg, struct scm_cookie *scm) |
288 | { | |
289 | struct compat_cmsghdr __user *cm = | |
290 | (struct compat_cmsghdr __user *)msg->msg_control; | |
291 | unsigned int o_flags = (msg->msg_flags & MSG_CMSG_CLOEXEC) ? O_CLOEXEC : 0; | |
292 | int fdmax = min_t(int, scm_max_fds_compat(msg), scm->fp->count); | |
16b89f69 | 293 | int __user *cmsg_data = CMSG_COMPAT_DATA(cm); |
c0029de5 | 294 | int err = 0, i; |
1da177e4 | 295 | |
c0029de5 | 296 | for (i = 0; i < fdmax; i++) { |
66590610 | 297 | err = receive_fd_user(scm->fp->fp[i], cmsg_data + i, o_flags); |
1da177e4 LT |
298 | if (err < 0) |
299 | break; | |
1da177e4 LT |
300 | } |
301 | ||
302 | if (i > 0) { | |
303 | int cmlen = CMSG_COMPAT_LEN(i * sizeof(int)); | |
c0029de5 | 304 | |
effee6a0 | 305 | err = put_user(SOL_SOCKET, &cm->cmsg_level); |
1da177e4 LT |
306 | if (!err) |
307 | err = put_user(SCM_RIGHTS, &cm->cmsg_type); | |
308 | if (!err) | |
309 | err = put_user(cmlen, &cm->cmsg_len); | |
310 | if (!err) { | |
311 | cmlen = CMSG_COMPAT_SPACE(i * sizeof(int)); | |
c0029de5 KC |
312 | if (msg->msg_controllen < cmlen) |
313 | cmlen = msg->msg_controllen; | |
314 | msg->msg_control += cmlen; | |
315 | msg->msg_controllen -= cmlen; | |
1da177e4 LT |
316 | } |
317 | } | |
c0029de5 KC |
318 | |
319 | if (i < scm->fp->count || (scm->fp->count && fdmax <= 0)) | |
320 | msg->msg_flags |= MSG_CTRUNC; | |
1da177e4 LT |
321 | |
322 | /* | |
c0029de5 KC |
323 | * All of the files that fit in the message have had their usage counts |
324 | * incremented, so we just free the list. | |
1da177e4 LT |
325 | */ |
326 | __scm_destroy(scm); | |
327 | } | |
328 | ||
1da177e4 LT |
329 | /* Argument list sizes for compat_sys_socketcall */ |
330 | #define AL(x) ((x) * sizeof(u32)) | |
228e548e | 331 | static unsigned char nas[21] = { |
c6d409cf ED |
332 | AL(0), AL(3), AL(3), AL(3), AL(2), AL(3), |
333 | AL(3), AL(3), AL(4), AL(4), AL(4), AL(6), | |
334 | AL(6), AL(2), AL(5), AL(5), AL(3), AL(3), | |
228e548e | 335 | AL(4), AL(5), AL(4) |
c6d409cf | 336 | }; |
1da177e4 LT |
337 | #undef AL |
338 | ||
6df35465 DB |
339 | static inline long __compat_sys_sendmsg(int fd, |
340 | struct compat_msghdr __user *msg, | |
341 | unsigned int flags) | |
1da177e4 | 342 | { |
e1834a32 DB |
343 | return __sys_sendmsg(fd, (struct user_msghdr __user *)msg, |
344 | flags | MSG_CMSG_COMPAT, false); | |
1da177e4 LT |
345 | } |
346 | ||
6df35465 DB |
347 | COMPAT_SYSCALL_DEFINE3(sendmsg, int, fd, struct compat_msghdr __user *, msg, |
348 | unsigned int, flags) | |
349 | { | |
350 | return __compat_sys_sendmsg(fd, msg, flags); | |
351 | } | |
352 | ||
353 | static inline long __compat_sys_sendmmsg(int fd, | |
354 | struct compat_mmsghdr __user *mmsg, | |
355 | unsigned int vlen, unsigned int flags) | |
228e548e AB |
356 | { |
357 | return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, | |
e1834a32 | 358 | flags | MSG_CMSG_COMPAT, false); |
228e548e AB |
359 | } |
360 | ||
6df35465 DB |
361 | COMPAT_SYSCALL_DEFINE4(sendmmsg, int, fd, struct compat_mmsghdr __user *, mmsg, |
362 | unsigned int, vlen, unsigned int, flags) | |
363 | { | |
364 | return __compat_sys_sendmmsg(fd, mmsg, vlen, flags); | |
365 | } | |
366 | ||
367 | static inline long __compat_sys_recvmsg(int fd, | |
368 | struct compat_msghdr __user *msg, | |
369 | unsigned int flags) | |
1da177e4 | 370 | { |
e1834a32 DB |
371 | return __sys_recvmsg(fd, (struct user_msghdr __user *)msg, |
372 | flags | MSG_CMSG_COMPAT, false); | |
1da177e4 LT |
373 | } |
374 | ||
6df35465 DB |
375 | COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg, |
376 | unsigned int, flags) | |
377 | { | |
378 | return __compat_sys_recvmsg(fd, msg, flags); | |
379 | } | |
380 | ||
fd4e82f5 DB |
381 | static inline long __compat_sys_recvfrom(int fd, void __user *buf, |
382 | compat_size_t len, unsigned int flags, | |
383 | struct sockaddr __user *addr, | |
384 | int __user *addrlen) | |
385 | { | |
386 | return __sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr, | |
387 | addrlen); | |
388 | } | |
389 | ||
3a49a0f7 | 390 | COMPAT_SYSCALL_DEFINE4(recv, int, fd, void __user *, buf, compat_size_t, len, unsigned int, flags) |
1dacc76d | 391 | { |
fd4e82f5 | 392 | return __compat_sys_recvfrom(fd, buf, len, flags, NULL, NULL); |
1dacc76d JB |
393 | } |
394 | ||
3a49a0f7 HC |
395 | COMPAT_SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, buf, compat_size_t, len, |
396 | unsigned int, flags, struct sockaddr __user *, addr, | |
397 | int __user *, addrlen) | |
1dacc76d | 398 | { |
fd4e82f5 | 399 | return __compat_sys_recvfrom(fd, buf, len, flags, addr, addrlen); |
1dacc76d JB |
400 | } |
401 | ||
e11d4284 AB |
402 | COMPAT_SYSCALL_DEFINE5(recvmmsg_time64, int, fd, struct compat_mmsghdr __user *, mmsg, |
403 | unsigned int, vlen, unsigned int, flags, | |
404 | struct __kernel_timespec __user *, timeout) | |
a2e27255 | 405 | { |
e11d4284 AB |
406 | return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, |
407 | flags | MSG_CMSG_COMPAT, timeout, NULL); | |
a2e27255 ACM |
408 | } |
409 | ||
e11d4284 | 410 | #ifdef CONFIG_COMPAT_32BIT_TIME |
8dabe724 | 411 | COMPAT_SYSCALL_DEFINE5(recvmmsg_time32, int, fd, struct compat_mmsghdr __user *, mmsg, |
157b334a | 412 | unsigned int, vlen, unsigned int, flags, |
9afc5eee | 413 | struct old_timespec32 __user *, timeout) |
157b334a | 414 | { |
e11d4284 AB |
415 | return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, |
416 | flags | MSG_CMSG_COMPAT, NULL, timeout); | |
157b334a | 417 | } |
e11d4284 | 418 | #endif |
157b334a | 419 | |
361d93c4 | 420 | COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args) |
1da177e4 | 421 | { |
62bc306e RGB |
422 | u32 a[AUDITSC_ARGS]; |
423 | unsigned int len; | |
1da177e4 | 424 | u32 a0, a1; |
62bc306e | 425 | int ret; |
4768fbcb | 426 | |
228e548e | 427 | if (call < SYS_SOCKET || call > SYS_SENDMMSG) |
1da177e4 | 428 | return -EINVAL; |
62bc306e RGB |
429 | len = nas[call]; |
430 | if (len > sizeof(a)) | |
431 | return -EINVAL; | |
432 | ||
433 | if (copy_from_user(a, args, len)) | |
1da177e4 | 434 | return -EFAULT; |
62bc306e RGB |
435 | |
436 | ret = audit_socketcall_compat(len / sizeof(a[0]), a); | |
437 | if (ret) | |
438 | return ret; | |
439 | ||
1da177e4 LT |
440 | a0 = a[0]; |
441 | a1 = a[1]; | |
4768fbcb | 442 | |
e71a4783 | 443 | switch (call) { |
1da177e4 | 444 | case SYS_SOCKET: |
9d6a15c3 | 445 | ret = __sys_socket(a0, a1, a[2]); |
1da177e4 LT |
446 | break; |
447 | case SYS_BIND: | |
a87d35d8 | 448 | ret = __sys_bind(a0, compat_ptr(a1), a[2]); |
1da177e4 LT |
449 | break; |
450 | case SYS_CONNECT: | |
1387c2c2 | 451 | ret = __sys_connect(a0, compat_ptr(a1), a[2]); |
1da177e4 LT |
452 | break; |
453 | case SYS_LISTEN: | |
25e290ee | 454 | ret = __sys_listen(a0, a1); |
1da177e4 LT |
455 | break; |
456 | case SYS_ACCEPT: | |
4541e805 | 457 | ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0); |
1da177e4 LT |
458 | break; |
459 | case SYS_GETSOCKNAME: | |
8882a107 | 460 | ret = __sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2])); |
1da177e4 LT |
461 | break; |
462 | case SYS_GETPEERNAME: | |
b21c8f83 | 463 | ret = __sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2])); |
1da177e4 LT |
464 | break; |
465 | case SYS_SOCKETPAIR: | |
6debc8d8 | 466 | ret = __sys_socketpair(a0, a1, a[2], compat_ptr(a[3])); |
1da177e4 LT |
467 | break; |
468 | case SYS_SEND: | |
f3bf896b | 469 | ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3], NULL, 0); |
1da177e4 LT |
470 | break; |
471 | case SYS_SENDTO: | |
211b634b DB |
472 | ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3], |
473 | compat_ptr(a[4]), a[5]); | |
1da177e4 LT |
474 | break; |
475 | case SYS_RECV: | |
fd4e82f5 DB |
476 | ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], |
477 | NULL, NULL); | |
1da177e4 LT |
478 | break; |
479 | case SYS_RECVFROM: | |
fd4e82f5 DB |
480 | ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], |
481 | compat_ptr(a[4]), | |
482 | compat_ptr(a[5])); | |
1da177e4 LT |
483 | break; |
484 | case SYS_SHUTDOWN: | |
005a1aea | 485 | ret = __sys_shutdown(a0, a1); |
1da177e4 LT |
486 | break; |
487 | case SYS_SETSOCKOPT: | |
55db9c0e | 488 | ret = __sys_setsockopt(a0, a1, a[2], compat_ptr(a[3]), a[4]); |
1da177e4 LT |
489 | break; |
490 | case SYS_GETSOCKOPT: | |
55db9c0e CH |
491 | ret = __sys_getsockopt(a0, a1, a[2], compat_ptr(a[3]), |
492 | compat_ptr(a[4])); | |
1da177e4 LT |
493 | break; |
494 | case SYS_SENDMSG: | |
6df35465 | 495 | ret = __compat_sys_sendmsg(a0, compat_ptr(a1), a[2]); |
1da177e4 | 496 | break; |
228e548e | 497 | case SYS_SENDMMSG: |
6df35465 | 498 | ret = __compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]); |
228e548e | 499 | break; |
1da177e4 | 500 | case SYS_RECVMSG: |
6df35465 | 501 | ret = __compat_sys_recvmsg(a0, compat_ptr(a1), a[2]); |
1da177e4 | 502 | break; |
a2e27255 | 503 | case SYS_RECVMMSG: |
e11d4284 AB |
504 | ret = __sys_recvmmsg(a0, compat_ptr(a1), a[2], |
505 | a[3] | MSG_CMSG_COMPAT, NULL, | |
506 | compat_ptr(a[4])); | |
a2e27255 | 507 | break; |
de11defe | 508 | case SYS_ACCEPT4: |
4541e805 | 509 | ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]); |
aaca0bdc | 510 | break; |
1da177e4 LT |
511 | default: |
512 | ret = -EINVAL; | |
513 | break; | |
514 | } | |
515 | return ret; | |
516 | } |