1 /* 2 * 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> 11 * Copyright (C) 2000,2001 Andi Kleen, SuSE Labs 12 */ 13 14 #include <linux/kernel.h> 15 #include <linux/fs.h> 16 #include <linux/sched.h> 17 #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> 24 #include <linux/netfilter_ipv4/ip_tables.h> 25 #include <linux/security.h> 26 27 #include <net/scm.h> 28 #include <net/sock.h> 29 #include <asm/uaccess.h> 30 #include <net/compat.h> 31 32 static inline int iov_from_user_compat_to_kern(struct iovec *kiov, 33 struct compat_iovec __user *uiov32, 34 int niov) 35 { 36 int tot_len = 0; 37 38 while(niov > 0) { 39 compat_uptr_t buf; 40 compat_size_t len; 41 42 if(get_user(len, &uiov32->iov_len) || 43 get_user(buf, &uiov32->iov_base)) { 44 tot_len = -EFAULT; 45 break; 46 } 47 tot_len += len; 48 kiov->iov_base = compat_ptr(buf); 49 kiov->iov_len = (__kernel_size_t) len; 50 uiov32++; 51 kiov++; 52 niov--; 53 } 54 return tot_len; 55 } 56 57 int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg) 58 { 59 compat_uptr_t tmp1, tmp2, tmp3; 60 61 if (!access_ok(VERIFY_READ, umsg, sizeof(*umsg)) || 62 __get_user(tmp1, &umsg->msg_name) || 63 __get_user(kmsg->msg_namelen, &umsg->msg_namelen) || 64 __get_user(tmp2, &umsg->msg_iov) || 65 __get_user(kmsg->msg_iovlen, &umsg->msg_iovlen) || 66 __get_user(tmp3, &umsg->msg_control) || 67 __get_user(kmsg->msg_controllen, &umsg->msg_controllen) || 68 __get_user(kmsg->msg_flags, &umsg->msg_flags)) 69 return -EFAULT; 70 kmsg->msg_name = compat_ptr(tmp1); 71 kmsg->msg_iov = compat_ptr(tmp2); 72 kmsg->msg_control = compat_ptr(tmp3); 73 return 0; 74 } 75 76 /* I've named the args so it is easy to tell whose space the pointers are in. */ 77 int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov, 78 char *kern_address, int mode) 79 { 80 int tot_len; 81 82 if(kern_msg->msg_namelen) { 83 if(mode==VERIFY_READ) { 84 int err = move_addr_to_kernel(kern_msg->msg_name, 85 kern_msg->msg_namelen, 86 kern_address); 87 if(err < 0) 88 return err; 89 } 90 kern_msg->msg_name = kern_address; 91 } else 92 kern_msg->msg_name = NULL; 93 94 tot_len = iov_from_user_compat_to_kern(kern_iov, 95 (struct compat_iovec __user *)kern_msg->msg_iov, 96 kern_msg->msg_iovlen); 97 if(tot_len >= 0) 98 kern_msg->msg_iov = kern_iov; 99 100 return tot_len; 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) + CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)))) 108 #define CMSG_COMPAT_SPACE(len) \ 109 (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + CMSG_COMPAT_ALIGN(len)) 110 #define CMSG_COMPAT_LEN(len) \ 111 (CMSG_COMPAT_ALIGN(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 *)(ucmsg) - (char *)(mhdr)->msg_control))) 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 kcmlen = 0; 148 kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf; 149 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); 150 while(ucmsg != NULL) { 151 if(get_user(ucmlen, &ucmsg->cmsg_len)) 152 return -EFAULT; 153 154 /* Catch bogons. */ 155 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg)) 156 return -EINVAL; 157 158 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) + 159 CMSG_ALIGN(sizeof(struct cmsghdr))); 160 tmp = CMSG_ALIGN(tmp); 161 kcmlen += tmp; 162 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen); 163 } 164 if(kcmlen == 0) 165 return -EINVAL; 166 167 /* The kcmlen holds the 64-bit version of the control length. 168 * It may not be modified as we do not stick it into the kmsg 169 * until we have successfully copied over all of the data 170 * from the user. 171 */ 172 if (kcmlen > stackbuf_size) 173 kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL); 174 if (kcmsg == NULL) 175 return -ENOBUFS; 176 177 /* Now copy them over neatly. */ 178 memset(kcmsg, 0, kcmlen); 179 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); 180 while(ucmsg != NULL) { 181 if (__get_user(ucmlen, &ucmsg->cmsg_len)) 182 goto Efault; 183 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg)) 184 goto Einval; 185 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) + 186 CMSG_ALIGN(sizeof(struct cmsghdr))); 187 if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp)) 188 goto Einval; 189 kcmsg->cmsg_len = tmp; 190 tmp = CMSG_ALIGN(tmp); 191 if (__get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level) || 192 __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type) || 193 copy_from_user(CMSG_DATA(kcmsg), 194 CMSG_COMPAT_DATA(ucmsg), 195 (ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))))) 196 goto Efault; 197 198 /* Advance. */ 199 kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp); 200 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen); 201 } 202 203 /* Ok, looks like we made it. Hook it up and return success. */ 204 kmsg->msg_control = kcmsg_base; 205 kmsg->msg_controllen = kcmlen; 206 return 0; 207 208 Einval: 209 err = -EINVAL; 210 Efault: 211 if (kcmsg_base != (struct cmsghdr *)stackbuf) 212 sock_kfree_s(sk, kcmsg_base, kcmlen); 213 return err; 214 } 215 216 int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data) 217 { 218 struct compat_timeval ctv; 219 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; 220 struct compat_cmsghdr cmhdr; 221 int cmlen; 222 223 if(cm == NULL || kmsg->msg_controllen < sizeof(*cm)) { 224 kmsg->msg_flags |= MSG_CTRUNC; 225 return 0; /* XXX: return error? check spec. */ 226 } 227 228 if (level == SOL_SOCKET && type == SO_TIMESTAMP) { 229 struct timeval *tv = (struct timeval *)data; 230 ctv.tv_sec = tv->tv_sec; 231 ctv.tv_usec = tv->tv_usec; 232 data = &ctv; 233 len = sizeof(struct compat_timeval); 234 } 235 236 cmlen = CMSG_COMPAT_LEN(len); 237 if(kmsg->msg_controllen < cmlen) { 238 kmsg->msg_flags |= MSG_CTRUNC; 239 cmlen = kmsg->msg_controllen; 240 } 241 cmhdr.cmsg_level = level; 242 cmhdr.cmsg_type = type; 243 cmhdr.cmsg_len = cmlen; 244 245 if(copy_to_user(cm, &cmhdr, sizeof cmhdr)) 246 return -EFAULT; 247 if(copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr))) 248 return -EFAULT; 249 cmlen = CMSG_COMPAT_SPACE(len); 250 kmsg->msg_control += cmlen; 251 kmsg->msg_controllen -= cmlen; 252 return 0; 253 } 254 255 void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm) 256 { 257 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; 258 int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int); 259 int fdnum = scm->fp->count; 260 struct file **fp = scm->fp->fp; 261 int __user *cmfptr; 262 int err = 0, i; 263 264 if (fdnum < fdmax) 265 fdmax = fdnum; 266 267 for (i = 0, cmfptr = (int __user *) CMSG_COMPAT_DATA(cm); i < fdmax; i++, cmfptr++) { 268 int new_fd; 269 err = security_file_receive(fp[i]); 270 if (err) 271 break; 272 err = get_unused_fd(); 273 if (err < 0) 274 break; 275 new_fd = err; 276 err = put_user(new_fd, cmfptr); 277 if (err) { 278 put_unused_fd(new_fd); 279 break; 280 } 281 /* Bump the usage count and install the file. */ 282 get_file(fp[i]); 283 fd_install(new_fd, fp[i]); 284 } 285 286 if (i > 0) { 287 int cmlen = CMSG_COMPAT_LEN(i * sizeof(int)); 288 err = put_user(SOL_SOCKET, &cm->cmsg_level); 289 if (!err) 290 err = put_user(SCM_RIGHTS, &cm->cmsg_type); 291 if (!err) 292 err = put_user(cmlen, &cm->cmsg_len); 293 if (!err) { 294 cmlen = CMSG_COMPAT_SPACE(i * sizeof(int)); 295 kmsg->msg_control += cmlen; 296 kmsg->msg_controllen -= cmlen; 297 } 298 } 299 if (i < fdnum) 300 kmsg->msg_flags |= MSG_CTRUNC; 301 302 /* 303 * All of the files that fit in the message have had their 304 * usage counts incremented, so we just free the list. 305 */ 306 __scm_destroy(scm); 307 } 308 309 /* 310 * For now, we assume that the compatibility and native version 311 * of struct ipt_entry are the same - sfr. FIXME 312 */ 313 struct compat_ipt_replace { 314 char name[IPT_TABLE_MAXNAMELEN]; 315 u32 valid_hooks; 316 u32 num_entries; 317 u32 size; 318 u32 hook_entry[NF_IP_NUMHOOKS]; 319 u32 underflow[NF_IP_NUMHOOKS]; 320 u32 num_counters; 321 compat_uptr_t counters; /* struct ipt_counters * */ 322 struct ipt_entry entries[0]; 323 }; 324 325 static int do_netfilter_replace(int fd, int level, int optname, 326 char __user *optval, int optlen) 327 { 328 struct compat_ipt_replace __user *urepl; 329 struct ipt_replace __user *repl_nat; 330 char name[IPT_TABLE_MAXNAMELEN]; 331 u32 origsize, tmp32, num_counters; 332 unsigned int repl_nat_size; 333 int ret; 334 int i; 335 compat_uptr_t ucntrs; 336 337 urepl = (struct compat_ipt_replace __user *)optval; 338 if (get_user(origsize, &urepl->size)) 339 return -EFAULT; 340 341 /* Hack: Causes ipchains to give correct error msg --RR */ 342 if (optlen != sizeof(*urepl) + origsize) 343 return -ENOPROTOOPT; 344 345 /* XXX Assumes that size of ipt_entry is the same both in 346 * native and compat environments. 347 */ 348 repl_nat_size = sizeof(*repl_nat) + origsize; 349 repl_nat = compat_alloc_user_space(repl_nat_size); 350 351 ret = -EFAULT; 352 if (put_user(origsize, &repl_nat->size)) 353 goto out; 354 355 if (!access_ok(VERIFY_READ, urepl, optlen) || 356 !access_ok(VERIFY_WRITE, repl_nat, optlen)) 357 goto out; 358 359 if (__copy_from_user(name, urepl->name, sizeof(urepl->name)) || 360 __copy_to_user(repl_nat->name, name, sizeof(repl_nat->name))) 361 goto out; 362 363 if (__get_user(tmp32, &urepl->valid_hooks) || 364 __put_user(tmp32, &repl_nat->valid_hooks)) 365 goto out; 366 367 if (__get_user(tmp32, &urepl->num_entries) || 368 __put_user(tmp32, &repl_nat->num_entries)) 369 goto out; 370 371 if (__get_user(num_counters, &urepl->num_counters) || 372 __put_user(num_counters, &repl_nat->num_counters)) 373 goto out; 374 375 if (__get_user(ucntrs, &urepl->counters) || 376 __put_user(compat_ptr(ucntrs), &repl_nat->counters)) 377 goto out; 378 379 if (__copy_in_user(&repl_nat->entries[0], 380 &urepl->entries[0], 381 origsize)) 382 goto out; 383 384 for (i = 0; i < NF_IP_NUMHOOKS; i++) { 385 if (__get_user(tmp32, &urepl->hook_entry[i]) || 386 __put_user(tmp32, &repl_nat->hook_entry[i]) || 387 __get_user(tmp32, &urepl->underflow[i]) || 388 __put_user(tmp32, &repl_nat->underflow[i])) 389 goto out; 390 } 391 392 /* 393 * Since struct ipt_counters just contains two u_int64_t members 394 * we can just do the access_ok check here and pass the (converted) 395 * pointer into the standard syscall. We hope that the pointer is 396 * not misaligned ... 397 */ 398 if (!access_ok(VERIFY_WRITE, compat_ptr(ucntrs), 399 num_counters * sizeof(struct ipt_counters))) 400 goto out; 401 402 403 ret = sys_setsockopt(fd, level, optname, 404 (char __user *)repl_nat, repl_nat_size); 405 406 out: 407 return ret; 408 } 409 410 /* 411 * A struct sock_filter is architecture independent. 412 */ 413 struct compat_sock_fprog { 414 u16 len; 415 compat_uptr_t filter; /* struct sock_filter * */ 416 }; 417 418 static int do_set_attach_filter(struct socket *sock, int level, int optname, 419 char __user *optval, int optlen) 420 { 421 struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval; 422 struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog)); 423 compat_uptr_t ptr; 424 u16 len; 425 426 if (!access_ok(VERIFY_READ, fprog32, sizeof(*fprog32)) || 427 !access_ok(VERIFY_WRITE, kfprog, sizeof(struct sock_fprog)) || 428 __get_user(len, &fprog32->len) || 429 __get_user(ptr, &fprog32->filter) || 430 __put_user(len, &kfprog->len) || 431 __put_user(compat_ptr(ptr), &kfprog->filter)) 432 return -EFAULT; 433 434 return sock_setsockopt(sock, level, optname, (char __user *)kfprog, 435 sizeof(struct sock_fprog)); 436 } 437 438 static int do_set_sock_timeout(struct socket *sock, int level, 439 int optname, char __user *optval, int optlen) 440 { 441 struct compat_timeval __user *up = (struct compat_timeval __user *) optval; 442 struct timeval ktime; 443 mm_segment_t old_fs; 444 int err; 445 446 if (optlen < sizeof(*up)) 447 return -EINVAL; 448 if (!access_ok(VERIFY_READ, up, sizeof(*up)) || 449 __get_user(ktime.tv_sec, &up->tv_sec) || 450 __get_user(ktime.tv_usec, &up->tv_usec)) 451 return -EFAULT; 452 old_fs = get_fs(); 453 set_fs(KERNEL_DS); 454 err = sock_setsockopt(sock, level, optname, (char *) &ktime, sizeof(ktime)); 455 set_fs(old_fs); 456 457 return err; 458 } 459 460 static int compat_sock_setsockopt(struct socket *sock, int level, int optname, 461 char __user *optval, int optlen) 462 { 463 if (optname == SO_ATTACH_FILTER) 464 return do_set_attach_filter(sock, level, optname, 465 optval, optlen); 466 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO) 467 return do_set_sock_timeout(sock, level, optname, optval, optlen); 468 469 return sock_setsockopt(sock, level, optname, optval, optlen); 470 } 471 472 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, 473 char __user *optval, int optlen) 474 { 475 int err; 476 struct socket *sock; 477 478 if (level == SOL_IPV6 && optname == IPT_SO_SET_REPLACE) 479 return do_netfilter_replace(fd, level, optname, 480 optval, optlen); 481 482 if (optlen < 0) 483 return -EINVAL; 484 485 if ((sock = sockfd_lookup(fd, &err))!=NULL) 486 { 487 err = security_socket_setsockopt(sock,level,optname); 488 if (err) { 489 sockfd_put(sock); 490 return err; 491 } 492 493 if (level == SOL_SOCKET) 494 err = compat_sock_setsockopt(sock, level, 495 optname, optval, optlen); 496 else if (sock->ops->compat_setsockopt) 497 err = sock->ops->compat_setsockopt(sock, level, 498 optname, optval, optlen); 499 else 500 err = sock->ops->setsockopt(sock, level, 501 optname, optval, optlen); 502 sockfd_put(sock); 503 } 504 return err; 505 } 506 507 static int do_get_sock_timeout(struct socket *sock, int level, int optname, 508 char __user *optval, int __user *optlen) 509 { 510 struct compat_timeval __user *up; 511 struct timeval ktime; 512 mm_segment_t old_fs; 513 int len, err; 514 515 up = (struct compat_timeval __user *) optval; 516 if (get_user(len, optlen)) 517 return -EFAULT; 518 if (len < sizeof(*up)) 519 return -EINVAL; 520 len = sizeof(ktime); 521 old_fs = get_fs(); 522 set_fs(KERNEL_DS); 523 err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len); 524 set_fs(old_fs); 525 526 if (!err) { 527 if (put_user(sizeof(*up), optlen) || 528 !access_ok(VERIFY_WRITE, up, sizeof(*up)) || 529 __put_user(ktime.tv_sec, &up->tv_sec) || 530 __put_user(ktime.tv_usec, &up->tv_usec)) 531 err = -EFAULT; 532 } 533 return err; 534 } 535 536 static int compat_sock_getsockopt(struct socket *sock, int level, int optname, 537 char __user *optval, int __user *optlen) 538 { 539 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO) 540 return do_get_sock_timeout(sock, level, optname, optval, optlen); 541 return sock_getsockopt(sock, level, optname, optval, optlen); 542 } 543 544 int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp) 545 { 546 struct compat_timeval __user *ctv = 547 (struct compat_timeval __user*) userstamp; 548 int err = -ENOENT; 549 550 if (!sock_flag(sk, SOCK_TIMESTAMP)) 551 sock_enable_timestamp(sk); 552 if (sk->sk_stamp.tv_sec == -1) 553 return err; 554 if (sk->sk_stamp.tv_sec == 0) 555 do_gettimeofday(&sk->sk_stamp); 556 if (put_user(sk->sk_stamp.tv_sec, &ctv->tv_sec) || 557 put_user(sk->sk_stamp.tv_usec, &ctv->tv_usec)) 558 err = -EFAULT; 559 return err; 560 } 561 EXPORT_SYMBOL(compat_sock_get_timestamp); 562 563 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, 564 char __user *optval, int __user *optlen) 565 { 566 int err; 567 struct socket *sock; 568 569 if ((sock = sockfd_lookup(fd, &err))!=NULL) 570 { 571 err = security_socket_getsockopt(sock, level, 572 optname); 573 if (err) { 574 sockfd_put(sock); 575 return err; 576 } 577 578 if (level == SOL_SOCKET) 579 err = compat_sock_getsockopt(sock, level, 580 optname, optval, optlen); 581 else if (sock->ops->compat_getsockopt) 582 err = sock->ops->compat_getsockopt(sock, level, 583 optname, optval, optlen); 584 else 585 err = sock->ops->getsockopt(sock, level, 586 optname, optval, optlen); 587 sockfd_put(sock); 588 } 589 return err; 590 } 591 /* Argument list sizes for compat_sys_socketcall */ 592 #define AL(x) ((x) * sizeof(u32)) 593 static unsigned char nas[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), 594 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6), 595 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)}; 596 #undef AL 597 598 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, unsigned flags) 599 { 600 return sys_sendmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT); 601 } 602 603 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, unsigned int flags) 604 { 605 return sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT); 606 } 607 608 asmlinkage long compat_sys_socketcall(int call, u32 __user *args) 609 { 610 int ret; 611 u32 a[6]; 612 u32 a0, a1; 613 614 if (call < SYS_SOCKET || call > SYS_RECVMSG) 615 return -EINVAL; 616 if (copy_from_user(a, args, nas[call])) 617 return -EFAULT; 618 a0 = a[0]; 619 a1 = a[1]; 620 621 switch(call) { 622 case SYS_SOCKET: 623 ret = sys_socket(a0, a1, a[2]); 624 break; 625 case SYS_BIND: 626 ret = sys_bind(a0, compat_ptr(a1), a[2]); 627 break; 628 case SYS_CONNECT: 629 ret = sys_connect(a0, compat_ptr(a1), a[2]); 630 break; 631 case SYS_LISTEN: 632 ret = sys_listen(a0, a1); 633 break; 634 case SYS_ACCEPT: 635 ret = sys_accept(a0, compat_ptr(a1), compat_ptr(a[2])); 636 break; 637 case SYS_GETSOCKNAME: 638 ret = sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2])); 639 break; 640 case SYS_GETPEERNAME: 641 ret = sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2])); 642 break; 643 case SYS_SOCKETPAIR: 644 ret = sys_socketpair(a0, a1, a[2], compat_ptr(a[3])); 645 break; 646 case SYS_SEND: 647 ret = sys_send(a0, compat_ptr(a1), a[2], a[3]); 648 break; 649 case SYS_SENDTO: 650 ret = sys_sendto(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), a[5]); 651 break; 652 case SYS_RECV: 653 ret = sys_recv(a0, compat_ptr(a1), a[2], a[3]); 654 break; 655 case SYS_RECVFROM: 656 ret = sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), compat_ptr(a[5])); 657 break; 658 case SYS_SHUTDOWN: 659 ret = sys_shutdown(a0,a1); 660 break; 661 case SYS_SETSOCKOPT: 662 ret = compat_sys_setsockopt(a0, a1, a[2], 663 compat_ptr(a[3]), a[4]); 664 break; 665 case SYS_GETSOCKOPT: 666 ret = compat_sys_getsockopt(a0, a1, a[2], 667 compat_ptr(a[3]), compat_ptr(a[4])); 668 break; 669 case SYS_SENDMSG: 670 ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]); 671 break; 672 case SYS_RECVMSG: 673 ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]); 674 break; 675 default: 676 ret = -EINVAL; 677 break; 678 } 679 return ret; 680 } 681