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