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1 | // SPDX-License-Identifier: GPL-2.0-only | |
2 | /* | |
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> | |
12 | * Copyright (C) 2000,2001 Andi Kleen, SuSE Labs | |
13 | */ | |
14 | ||
15 | #include <linux/kernel.h> | |
16 | #include <linux/gfp.h> | |
17 | #include <linux/fs.h> | |
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> | |
25 | #include <linux/security.h> | |
26 | #include <linux/audit.h> | |
27 | #include <linux/export.h> | |
28 | ||
29 | #include <net/scm.h> | |
30 | #include <net/sock.h> | |
31 | #include <net/ip.h> | |
32 | #include <net/ipv6.h> | |
33 | #include <linux/uaccess.h> | |
34 | #include <net/compat.h> | |
35 | ||
36 | int __get_compat_msghdr(struct msghdr *kmsg, | |
37 | struct compat_msghdr __user *umsg, | |
38 | struct sockaddr __user **save_addr, | |
39 | compat_uptr_t *ptr, compat_size_t *len) | |
40 | { | |
41 | struct compat_msghdr msg; | |
42 | ssize_t err; | |
43 | ||
44 | if (copy_from_user(&msg, umsg, sizeof(*umsg))) | |
45 | return -EFAULT; | |
46 | ||
47 | kmsg->msg_flags = msg.msg_flags; | |
48 | kmsg->msg_namelen = msg.msg_namelen; | |
49 | ||
50 | if (!msg.msg_name) | |
51 | kmsg->msg_namelen = 0; | |
52 | ||
53 | if (kmsg->msg_namelen < 0) | |
54 | return -EINVAL; | |
55 | ||
56 | if (kmsg->msg_namelen > sizeof(struct sockaddr_storage)) | |
57 | kmsg->msg_namelen = sizeof(struct sockaddr_storage); | |
58 | ||
59 | kmsg->msg_control_is_user = true; | |
60 | kmsg->msg_control_user = compat_ptr(msg.msg_control); | |
61 | kmsg->msg_controllen = msg.msg_controllen; | |
62 | ||
63 | if (save_addr) | |
64 | *save_addr = compat_ptr(msg.msg_name); | |
65 | ||
66 | if (msg.msg_name && kmsg->msg_namelen) { | |
67 | if (!save_addr) { | |
68 | err = move_addr_to_kernel(compat_ptr(msg.msg_name), | |
69 | kmsg->msg_namelen, | |
70 | kmsg->msg_name); | |
71 | if (err < 0) | |
72 | return err; | |
73 | } | |
74 | } else { | |
75 | kmsg->msg_name = NULL; | |
76 | kmsg->msg_namelen = 0; | |
77 | } | |
78 | ||
79 | if (msg.msg_iovlen > UIO_MAXIOV) | |
80 | return -EMSGSIZE; | |
81 | ||
82 | kmsg->msg_iocb = NULL; | |
83 | *ptr = msg.msg_iov; | |
84 | *len = msg.msg_iovlen; | |
85 | return 0; | |
86 | } | |
87 | ||
88 | int get_compat_msghdr(struct msghdr *kmsg, | |
89 | struct compat_msghdr __user *umsg, | |
90 | struct sockaddr __user **save_addr, | |
91 | struct iovec **iov) | |
92 | { | |
93 | compat_uptr_t ptr; | |
94 | compat_size_t len; | |
95 | ssize_t err; | |
96 | ||
97 | err = __get_compat_msghdr(kmsg, umsg, save_addr, &ptr, &len); | |
98 | if (err) | |
99 | return err; | |
100 | ||
101 | err = import_iovec(save_addr ? READ : WRITE, compat_ptr(ptr), len, | |
102 | UIO_FASTIOV, iov, &kmsg->msg_iter); | |
103 | return err < 0 ? err : 0; | |
104 | } | |
105 | ||
106 | /* Bleech... */ | |
107 | #define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32)) | |
108 | ||
109 | #define CMSG_COMPAT_DATA(cmsg) \ | |
110 | ((void __user *)((char __user *)(cmsg) + sizeof(struct compat_cmsghdr))) | |
111 | #define CMSG_COMPAT_SPACE(len) \ | |
112 | (sizeof(struct compat_cmsghdr) + CMSG_COMPAT_ALIGN(len)) | |
113 | #define CMSG_COMPAT_LEN(len) \ | |
114 | (sizeof(struct compat_cmsghdr) + (len)) | |
115 | ||
116 | #define CMSG_COMPAT_FIRSTHDR(msg) \ | |
117 | (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \ | |
118 | (struct compat_cmsghdr __user *)((msg)->msg_control) : \ | |
119 | (struct compat_cmsghdr __user *)NULL) | |
120 | ||
121 | #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \ | |
122 | ((ucmlen) >= sizeof(struct compat_cmsghdr) && \ | |
123 | (ucmlen) <= (unsigned long) \ | |
124 | ((mhdr)->msg_controllen - \ | |
125 | ((char __user *)(ucmsg) - (char __user *)(mhdr)->msg_control_user))) | |
126 | ||
127 | static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg, | |
128 | struct compat_cmsghdr __user *cmsg, int cmsg_len) | |
129 | { | |
130 | char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len); | |
131 | if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) > | |
132 | msg->msg_controllen) | |
133 | return NULL; | |
134 | return (struct compat_cmsghdr __user *)ptr; | |
135 | } | |
136 | ||
137 | /* There is a lot of hair here because the alignment rules (and | |
138 | * thus placement) of cmsg headers and length are different for | |
139 | * 32-bit apps. -DaveM | |
140 | */ | |
141 | int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk, | |
142 | unsigned char *stackbuf, int stackbuf_size) | |
143 | { | |
144 | struct compat_cmsghdr __user *ucmsg; | |
145 | struct cmsghdr *kcmsg, *kcmsg_base; | |
146 | compat_size_t ucmlen; | |
147 | __kernel_size_t kcmlen, tmp; | |
148 | int err = -EFAULT; | |
149 | ||
150 | BUILD_BUG_ON(sizeof(struct compat_cmsghdr) != | |
151 | CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr))); | |
152 | ||
153 | kcmlen = 0; | |
154 | kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf; | |
155 | ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); | |
156 | while (ucmsg != NULL) { | |
157 | if (get_user(ucmlen, &ucmsg->cmsg_len)) | |
158 | return -EFAULT; | |
159 | ||
160 | /* Catch bogons. */ | |
161 | if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg)) | |
162 | return -EINVAL; | |
163 | ||
164 | tmp = ((ucmlen - sizeof(*ucmsg)) + sizeof(struct cmsghdr)); | |
165 | tmp = CMSG_ALIGN(tmp); | |
166 | kcmlen += tmp; | |
167 | ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen); | |
168 | } | |
169 | if (kcmlen == 0) | |
170 | return -EINVAL; | |
171 | ||
172 | /* The kcmlen holds the 64-bit version of the control length. | |
173 | * It may not be modified as we do not stick it into the kmsg | |
174 | * until we have successfully copied over all of the data | |
175 | * from the user. | |
176 | */ | |
177 | if (kcmlen > stackbuf_size) | |
178 | kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL); | |
179 | if (kcmsg == NULL) | |
180 | return -ENOMEM; | |
181 | ||
182 | /* Now copy them over neatly. */ | |
183 | memset(kcmsg, 0, kcmlen); | |
184 | ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); | |
185 | while (ucmsg != NULL) { | |
186 | struct compat_cmsghdr cmsg; | |
187 | if (copy_from_user(&cmsg, ucmsg, sizeof(cmsg))) | |
188 | goto Efault; | |
189 | if (!CMSG_COMPAT_OK(cmsg.cmsg_len, ucmsg, kmsg)) | |
190 | goto Einval; | |
191 | tmp = ((cmsg.cmsg_len - sizeof(*ucmsg)) + sizeof(struct cmsghdr)); | |
192 | if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp)) | |
193 | goto Einval; | |
194 | kcmsg->cmsg_len = tmp; | |
195 | kcmsg->cmsg_level = cmsg.cmsg_level; | |
196 | kcmsg->cmsg_type = cmsg.cmsg_type; | |
197 | tmp = CMSG_ALIGN(tmp); | |
198 | if (copy_from_user(CMSG_DATA(kcmsg), | |
199 | CMSG_COMPAT_DATA(ucmsg), | |
200 | (cmsg.cmsg_len - sizeof(*ucmsg)))) | |
201 | goto Efault; | |
202 | ||
203 | /* Advance. */ | |
204 | kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp); | |
205 | ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, cmsg.cmsg_len); | |
206 | } | |
207 | ||
208 | /* | |
209 | * check the length of messages copied in is the same as the | |
210 | * what we get from the first loop | |
211 | */ | |
212 | if ((char *)kcmsg - (char *)kcmsg_base != kcmlen) | |
213 | goto Einval; | |
214 | ||
215 | /* Ok, looks like we made it. Hook it up and return success. */ | |
216 | kmsg->msg_control = kcmsg_base; | |
217 | kmsg->msg_controllen = kcmlen; | |
218 | return 0; | |
219 | ||
220 | Einval: | |
221 | err = -EINVAL; | |
222 | Efault: | |
223 | if (kcmsg_base != (struct cmsghdr *)stackbuf) | |
224 | sock_kfree_s(sk, kcmsg_base, kcmlen); | |
225 | return err; | |
226 | } | |
227 | ||
228 | int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data) | |
229 | { | |
230 | struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; | |
231 | struct compat_cmsghdr cmhdr; | |
232 | struct old_timeval32 ctv; | |
233 | struct old_timespec32 cts[3]; | |
234 | int cmlen; | |
235 | ||
236 | if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) { | |
237 | kmsg->msg_flags |= MSG_CTRUNC; | |
238 | return 0; /* XXX: return error? check spec. */ | |
239 | } | |
240 | ||
241 | if (!COMPAT_USE_64BIT_TIME) { | |
242 | if (level == SOL_SOCKET && type == SO_TIMESTAMP_OLD) { | |
243 | struct __kernel_old_timeval *tv = (struct __kernel_old_timeval *)data; | |
244 | ctv.tv_sec = tv->tv_sec; | |
245 | ctv.tv_usec = tv->tv_usec; | |
246 | data = &ctv; | |
247 | len = sizeof(ctv); | |
248 | } | |
249 | if (level == SOL_SOCKET && | |
250 | (type == SO_TIMESTAMPNS_OLD || type == SO_TIMESTAMPING_OLD)) { | |
251 | int count = type == SO_TIMESTAMPNS_OLD ? 1 : 3; | |
252 | int i; | |
253 | struct __kernel_old_timespec *ts = data; | |
254 | for (i = 0; i < count; i++) { | |
255 | cts[i].tv_sec = ts[i].tv_sec; | |
256 | cts[i].tv_nsec = ts[i].tv_nsec; | |
257 | } | |
258 | data = &cts; | |
259 | len = sizeof(cts[0]) * count; | |
260 | } | |
261 | } | |
262 | ||
263 | cmlen = CMSG_COMPAT_LEN(len); | |
264 | if (kmsg->msg_controllen < cmlen) { | |
265 | kmsg->msg_flags |= MSG_CTRUNC; | |
266 | cmlen = kmsg->msg_controllen; | |
267 | } | |
268 | cmhdr.cmsg_level = level; | |
269 | cmhdr.cmsg_type = type; | |
270 | cmhdr.cmsg_len = cmlen; | |
271 | ||
272 | if (copy_to_user(cm, &cmhdr, sizeof cmhdr)) | |
273 | return -EFAULT; | |
274 | if (copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr))) | |
275 | return -EFAULT; | |
276 | cmlen = CMSG_COMPAT_SPACE(len); | |
277 | if (kmsg->msg_controllen < cmlen) | |
278 | cmlen = kmsg->msg_controllen; | |
279 | kmsg->msg_control += cmlen; | |
280 | kmsg->msg_controllen -= cmlen; | |
281 | return 0; | |
282 | } | |
283 | ||
284 | static int scm_max_fds_compat(struct msghdr *msg) | |
285 | { | |
286 | if (msg->msg_controllen <= sizeof(struct compat_cmsghdr)) | |
287 | return 0; | |
288 | return (msg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int); | |
289 | } | |
290 | ||
291 | void scm_detach_fds_compat(struct msghdr *msg, struct scm_cookie *scm) | |
292 | { | |
293 | struct compat_cmsghdr __user *cm = | |
294 | (struct compat_cmsghdr __user *)msg->msg_control; | |
295 | unsigned int o_flags = (msg->msg_flags & MSG_CMSG_CLOEXEC) ? O_CLOEXEC : 0; | |
296 | int fdmax = min_t(int, scm_max_fds_compat(msg), scm->fp->count); | |
297 | int __user *cmsg_data = CMSG_COMPAT_DATA(cm); | |
298 | int err = 0, i; | |
299 | ||
300 | for (i = 0; i < fdmax; i++) { | |
301 | err = receive_fd_user(scm->fp->fp[i], cmsg_data + i, o_flags); | |
302 | if (err < 0) | |
303 | break; | |
304 | } | |
305 | ||
306 | if (i > 0) { | |
307 | int cmlen = CMSG_COMPAT_LEN(i * sizeof(int)); | |
308 | ||
309 | err = put_user(SOL_SOCKET, &cm->cmsg_level); | |
310 | if (!err) | |
311 | err = put_user(SCM_RIGHTS, &cm->cmsg_type); | |
312 | if (!err) | |
313 | err = put_user(cmlen, &cm->cmsg_len); | |
314 | if (!err) { | |
315 | cmlen = CMSG_COMPAT_SPACE(i * sizeof(int)); | |
316 | if (msg->msg_controllen < cmlen) | |
317 | cmlen = msg->msg_controllen; | |
318 | msg->msg_control += cmlen; | |
319 | msg->msg_controllen -= cmlen; | |
320 | } | |
321 | } | |
322 | ||
323 | if (i < scm->fp->count || (scm->fp->count && fdmax <= 0)) | |
324 | msg->msg_flags |= MSG_CTRUNC; | |
325 | ||
326 | /* | |
327 | * All of the files that fit in the message have had their usage counts | |
328 | * incremented, so we just free the list. | |
329 | */ | |
330 | __scm_destroy(scm); | |
331 | } | |
332 | ||
333 | /* Argument list sizes for compat_sys_socketcall */ | |
334 | #define AL(x) ((x) * sizeof(u32)) | |
335 | static unsigned char nas[21] = { | |
336 | AL(0), AL(3), AL(3), AL(3), AL(2), AL(3), | |
337 | AL(3), AL(3), AL(4), AL(4), AL(4), AL(6), | |
338 | AL(6), AL(2), AL(5), AL(5), AL(3), AL(3), | |
339 | AL(4), AL(5), AL(4) | |
340 | }; | |
341 | #undef AL | |
342 | ||
343 | static inline long __compat_sys_sendmsg(int fd, | |
344 | struct compat_msghdr __user *msg, | |
345 | unsigned int flags) | |
346 | { | |
347 | return __sys_sendmsg(fd, (struct user_msghdr __user *)msg, | |
348 | flags | MSG_CMSG_COMPAT, false); | |
349 | } | |
350 | ||
351 | COMPAT_SYSCALL_DEFINE3(sendmsg, int, fd, struct compat_msghdr __user *, msg, | |
352 | unsigned int, flags) | |
353 | { | |
354 | return __compat_sys_sendmsg(fd, msg, flags); | |
355 | } | |
356 | ||
357 | static inline long __compat_sys_sendmmsg(int fd, | |
358 | struct compat_mmsghdr __user *mmsg, | |
359 | unsigned int vlen, unsigned int flags) | |
360 | { | |
361 | return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, | |
362 | flags | MSG_CMSG_COMPAT, false); | |
363 | } | |
364 | ||
365 | COMPAT_SYSCALL_DEFINE4(sendmmsg, int, fd, struct compat_mmsghdr __user *, mmsg, | |
366 | unsigned int, vlen, unsigned int, flags) | |
367 | { | |
368 | return __compat_sys_sendmmsg(fd, mmsg, vlen, flags); | |
369 | } | |
370 | ||
371 | static inline long __compat_sys_recvmsg(int fd, | |
372 | struct compat_msghdr __user *msg, | |
373 | unsigned int flags) | |
374 | { | |
375 | return __sys_recvmsg(fd, (struct user_msghdr __user *)msg, | |
376 | flags | MSG_CMSG_COMPAT, false); | |
377 | } | |
378 | ||
379 | COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg, | |
380 | unsigned int, flags) | |
381 | { | |
382 | return __compat_sys_recvmsg(fd, msg, flags); | |
383 | } | |
384 | ||
385 | static inline long __compat_sys_recvfrom(int fd, void __user *buf, | |
386 | compat_size_t len, unsigned int flags, | |
387 | struct sockaddr __user *addr, | |
388 | int __user *addrlen) | |
389 | { | |
390 | return __sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr, | |
391 | addrlen); | |
392 | } | |
393 | ||
394 | COMPAT_SYSCALL_DEFINE4(recv, int, fd, void __user *, buf, compat_size_t, len, unsigned int, flags) | |
395 | { | |
396 | return __compat_sys_recvfrom(fd, buf, len, flags, NULL, NULL); | |
397 | } | |
398 | ||
399 | COMPAT_SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, buf, compat_size_t, len, | |
400 | unsigned int, flags, struct sockaddr __user *, addr, | |
401 | int __user *, addrlen) | |
402 | { | |
403 | return __compat_sys_recvfrom(fd, buf, len, flags, addr, addrlen); | |
404 | } | |
405 | ||
406 | COMPAT_SYSCALL_DEFINE5(recvmmsg_time64, int, fd, struct compat_mmsghdr __user *, mmsg, | |
407 | unsigned int, vlen, unsigned int, flags, | |
408 | struct __kernel_timespec __user *, timeout) | |
409 | { | |
410 | return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, | |
411 | flags | MSG_CMSG_COMPAT, timeout, NULL); | |
412 | } | |
413 | ||
414 | #ifdef CONFIG_COMPAT_32BIT_TIME | |
415 | COMPAT_SYSCALL_DEFINE5(recvmmsg_time32, int, fd, struct compat_mmsghdr __user *, mmsg, | |
416 | unsigned int, vlen, unsigned int, flags, | |
417 | struct old_timespec32 __user *, timeout) | |
418 | { | |
419 | return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, | |
420 | flags | MSG_CMSG_COMPAT, NULL, timeout); | |
421 | } | |
422 | #endif | |
423 | ||
424 | COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args) | |
425 | { | |
426 | u32 a[AUDITSC_ARGS]; | |
427 | unsigned int len; | |
428 | u32 a0, a1; | |
429 | int ret; | |
430 | ||
431 | if (call < SYS_SOCKET || call > SYS_SENDMMSG) | |
432 | return -EINVAL; | |
433 | len = nas[call]; | |
434 | if (len > sizeof(a)) | |
435 | return -EINVAL; | |
436 | ||
437 | if (copy_from_user(a, args, len)) | |
438 | return -EFAULT; | |
439 | ||
440 | ret = audit_socketcall_compat(len / sizeof(a[0]), a); | |
441 | if (ret) | |
442 | return ret; | |
443 | ||
444 | a0 = a[0]; | |
445 | a1 = a[1]; | |
446 | ||
447 | switch (call) { | |
448 | case SYS_SOCKET: | |
449 | ret = __sys_socket(a0, a1, a[2]); | |
450 | break; | |
451 | case SYS_BIND: | |
452 | ret = __sys_bind(a0, compat_ptr(a1), a[2]); | |
453 | break; | |
454 | case SYS_CONNECT: | |
455 | ret = __sys_connect(a0, compat_ptr(a1), a[2]); | |
456 | break; | |
457 | case SYS_LISTEN: | |
458 | ret = __sys_listen(a0, a1); | |
459 | break; | |
460 | case SYS_ACCEPT: | |
461 | ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0); | |
462 | break; | |
463 | case SYS_GETSOCKNAME: | |
464 | ret = __sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2])); | |
465 | break; | |
466 | case SYS_GETPEERNAME: | |
467 | ret = __sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2])); | |
468 | break; | |
469 | case SYS_SOCKETPAIR: | |
470 | ret = __sys_socketpair(a0, a1, a[2], compat_ptr(a[3])); | |
471 | break; | |
472 | case SYS_SEND: | |
473 | ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3], NULL, 0); | |
474 | break; | |
475 | case SYS_SENDTO: | |
476 | ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3], | |
477 | compat_ptr(a[4]), a[5]); | |
478 | break; | |
479 | case SYS_RECV: | |
480 | ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], | |
481 | NULL, NULL); | |
482 | break; | |
483 | case SYS_RECVFROM: | |
484 | ret = __compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], | |
485 | compat_ptr(a[4]), | |
486 | compat_ptr(a[5])); | |
487 | break; | |
488 | case SYS_SHUTDOWN: | |
489 | ret = __sys_shutdown(a0, a1); | |
490 | break; | |
491 | case SYS_SETSOCKOPT: | |
492 | ret = __sys_setsockopt(a0, a1, a[2], compat_ptr(a[3]), a[4]); | |
493 | break; | |
494 | case SYS_GETSOCKOPT: | |
495 | ret = __sys_getsockopt(a0, a1, a[2], compat_ptr(a[3]), | |
496 | compat_ptr(a[4])); | |
497 | break; | |
498 | case SYS_SENDMSG: | |
499 | ret = __compat_sys_sendmsg(a0, compat_ptr(a1), a[2]); | |
500 | break; | |
501 | case SYS_SENDMMSG: | |
502 | ret = __compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]); | |
503 | break; | |
504 | case SYS_RECVMSG: | |
505 | ret = __compat_sys_recvmsg(a0, compat_ptr(a1), a[2]); | |
506 | break; | |
507 | case SYS_RECVMMSG: | |
508 | ret = __sys_recvmmsg(a0, compat_ptr(a1), a[2], | |
509 | a[3] | MSG_CMSG_COMPAT, NULL, | |
510 | compat_ptr(a[4])); | |
511 | break; | |
512 | case SYS_ACCEPT4: | |
513 | ret = __sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]); | |
514 | break; | |
515 | default: | |
516 | ret = -EINVAL; | |
517 | break; | |
518 | } | |
519 | return ret; | |
520 | } |