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/types.h> 17 #include <linux/file.h> 18 #include <linux/icmpv6.h> 19 #include <linux/socket.h> 20 #include <linux/syscalls.h> 21 #include <linux/filter.h> 22 #include <linux/compat.h> 23 #include <linux/netfilter_ipv4/ip_tables.h> 24 #include <linux/security.h> 25 26 #include <net/scm.h> 27 #include <net/sock.h> 28 #include <asm/uaccess.h> 29 #include <net/compat.h> 30 31 static inline int iov_from_user_compat_to_kern(struct iovec *kiov, 32 struct compat_iovec __user *uiov32, 33 int niov) 34 { 35 int tot_len = 0; 36 37 while(niov > 0) { 38 compat_uptr_t buf; 39 compat_size_t len; 40 41 if(get_user(len, &uiov32->iov_len) || 42 get_user(buf, &uiov32->iov_base)) { 43 tot_len = -EFAULT; 44 break; 45 } 46 tot_len += len; 47 kiov->iov_base = compat_ptr(buf); 48 kiov->iov_len = (__kernel_size_t) len; 49 uiov32++; 50 kiov++; 51 niov--; 52 } 53 return tot_len; 54 } 55 56 int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg) 57 { 58 compat_uptr_t tmp1, tmp2, tmp3; 59 60 if (!access_ok(VERIFY_READ, umsg, sizeof(*umsg)) || 61 __get_user(tmp1, &umsg->msg_name) || 62 __get_user(kmsg->msg_namelen, &umsg->msg_namelen) || 63 __get_user(tmp2, &umsg->msg_iov) || 64 __get_user(kmsg->msg_iovlen, &umsg->msg_iovlen) || 65 __get_user(tmp3, &umsg->msg_control) || 66 __get_user(kmsg->msg_controllen, &umsg->msg_controllen) || 67 __get_user(kmsg->msg_flags, &umsg->msg_flags)) 68 return -EFAULT; 69 kmsg->msg_name = compat_ptr(tmp1); 70 kmsg->msg_iov = compat_ptr(tmp2); 71 kmsg->msg_control = compat_ptr(tmp3); 72 return 0; 73 } 74 75 /* I've named the args so it is easy to tell whose space the pointers are in. */ 76 int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov, 77 char *kern_address, int mode) 78 { 79 int tot_len; 80 81 if(kern_msg->msg_namelen) { 82 if(mode==VERIFY_READ) { 83 int err = move_addr_to_kernel(kern_msg->msg_name, 84 kern_msg->msg_namelen, 85 kern_address); 86 if(err < 0) 87 return err; 88 } 89 kern_msg->msg_name = kern_address; 90 } else 91 kern_msg->msg_name = NULL; 92 93 tot_len = iov_from_user_compat_to_kern(kern_iov, 94 (struct compat_iovec __user *)kern_msg->msg_iov, 95 kern_msg->msg_iovlen); 96 if(tot_len >= 0) 97 kern_msg->msg_iov = kern_iov; 98 99 return tot_len; 100 } 101 102 /* Bleech... */ 103 #define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32)) 104 105 #define CMSG_COMPAT_DATA(cmsg) \ 106 ((void __user *)((char __user *)(cmsg) + CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)))) 107 #define CMSG_COMPAT_SPACE(len) \ 108 (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + CMSG_COMPAT_ALIGN(len)) 109 #define CMSG_COMPAT_LEN(len) \ 110 (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + (len)) 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 - \ 121 ((char *)(ucmsg) - (char *)(mhdr)->msg_control))) 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 */ 137 int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk, 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; 144 int err = -EFAULT; 145 146 kcmlen = 0; 147 kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf; 148 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); 149 while(ucmsg != NULL) { 150 if(get_user(ucmlen, &ucmsg->cmsg_len)) 151 return -EFAULT; 152 153 /* Catch bogons. */ 154 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg)) 155 return -EINVAL; 156 157 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) + 158 CMSG_ALIGN(sizeof(struct cmsghdr))); 159 tmp = CMSG_ALIGN(tmp); 160 kcmlen += tmp; 161 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen); 162 } 163 if(kcmlen == 0) 164 return -EINVAL; 165 166 /* The kcmlen holds the 64-bit version of the control length. 167 * It may not be modified as we do not stick it into the kmsg 168 * until we have successfully copied over all of the data 169 * from the user. 170 */ 171 if (kcmlen > stackbuf_size) 172 kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL); 173 if (kcmsg == NULL) 174 return -ENOBUFS; 175 176 /* Now copy them over neatly. */ 177 memset(kcmsg, 0, kcmlen); 178 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); 179 while(ucmsg != NULL) { 180 if (__get_user(ucmlen, &ucmsg->cmsg_len)) 181 goto Efault; 182 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg)) 183 goto Einval; 184 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) + 185 CMSG_ALIGN(sizeof(struct cmsghdr))); 186 if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp)) 187 goto Einval; 188 kcmsg->cmsg_len = tmp; 189 tmp = CMSG_ALIGN(tmp); 190 if (__get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level) || 191 __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type) || 192 copy_from_user(CMSG_DATA(kcmsg), 193 CMSG_COMPAT_DATA(ucmsg), 194 (ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))))) 195 goto Efault; 196 197 /* Advance. */ 198 kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp); 199 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen); 200 } 201 202 /* Ok, looks like we made it. Hook it up and return success. */ 203 kmsg->msg_control = kcmsg_base; 204 kmsg->msg_controllen = kcmlen; 205 return 0; 206 207 Einval: 208 err = -EINVAL; 209 Efault: 210 if (kcmsg_base != (struct cmsghdr *)stackbuf) 211 sock_kfree_s(sk, kcmsg_base, kcmlen); 212 return err; 213 } 214 215 int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data) 216 { 217 struct compat_timeval ctv; 218 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; 219 struct compat_cmsghdr cmhdr; 220 int cmlen; 221 222 if(cm == NULL || kmsg->msg_controllen < sizeof(*cm)) { 223 kmsg->msg_flags |= MSG_CTRUNC; 224 return 0; /* XXX: return error? check spec. */ 225 } 226 227 if (level == SOL_SOCKET && type == SO_TIMESTAMP) { 228 struct timeval *tv = (struct timeval *)data; 229 ctv.tv_sec = tv->tv_sec; 230 ctv.tv_usec = tv->tv_usec; 231 data = &ctv; 232 len = sizeof(struct compat_timeval); 233 } 234 235 cmlen = CMSG_COMPAT_LEN(len); 236 if(kmsg->msg_controllen < cmlen) { 237 kmsg->msg_flags |= MSG_CTRUNC; 238 cmlen = kmsg->msg_controllen; 239 } 240 cmhdr.cmsg_level = level; 241 cmhdr.cmsg_type = type; 242 cmhdr.cmsg_len = cmlen; 243 244 if(copy_to_user(cm, &cmhdr, sizeof cmhdr)) 245 return -EFAULT; 246 if(copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr))) 247 return -EFAULT; 248 cmlen = CMSG_COMPAT_SPACE(len); 249 kmsg->msg_control += cmlen; 250 kmsg->msg_controllen -= cmlen; 251 return 0; 252 } 253 254 void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm) 255 { 256 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; 257 int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int); 258 int fdnum = scm->fp->count; 259 struct file **fp = scm->fp->fp; 260 int __user *cmfptr; 261 int err = 0, i; 262 263 if (fdnum < fdmax) 264 fdmax = fdnum; 265 266 for (i = 0, cmfptr = (int __user *) CMSG_COMPAT_DATA(cm); i < fdmax; i++, cmfptr++) { 267 int new_fd; 268 err = security_file_receive(fp[i]); 269 if (err) 270 break; 271 err = get_unused_fd(); 272 if (err < 0) 273 break; 274 new_fd = err; 275 err = put_user(new_fd, cmfptr); 276 if (err) { 277 put_unused_fd(new_fd); 278 break; 279 } 280 /* Bump the usage count and install the file. */ 281 get_file(fp[i]); 282 fd_install(new_fd, fp[i]); 283 } 284 285 if (i > 0) { 286 int cmlen = CMSG_COMPAT_LEN(i * sizeof(int)); 287 err = put_user(SOL_SOCKET, &cm->cmsg_level); 288 if (!err) 289 err = put_user(SCM_RIGHTS, &cm->cmsg_type); 290 if (!err) 291 err = put_user(cmlen, &cm->cmsg_len); 292 if (!err) { 293 cmlen = CMSG_COMPAT_SPACE(i * sizeof(int)); 294 kmsg->msg_control += cmlen; 295 kmsg->msg_controllen -= cmlen; 296 } 297 } 298 if (i < fdnum) 299 kmsg->msg_flags |= MSG_CTRUNC; 300 301 /* 302 * All of the files that fit in the message have had their 303 * usage counts incremented, so we just free the list. 304 */ 305 __scm_destroy(scm); 306 } 307 308 /* 309 * For now, we assume that the compatibility and native version 310 * of struct ipt_entry are the same - sfr. FIXME 311 */ 312 struct compat_ipt_replace { 313 char name[IPT_TABLE_MAXNAMELEN]; 314 u32 valid_hooks; 315 u32 num_entries; 316 u32 size; 317 u32 hook_entry[NF_IP_NUMHOOKS]; 318 u32 underflow[NF_IP_NUMHOOKS]; 319 u32 num_counters; 320 compat_uptr_t counters; /* struct ipt_counters * */ 321 struct ipt_entry entries[0]; 322 }; 323 324 static int do_netfilter_replace(int fd, int level, int optname, 325 char __user *optval, int optlen) 326 { 327 struct compat_ipt_replace __user *urepl; 328 struct ipt_replace __user *repl_nat; 329 char name[IPT_TABLE_MAXNAMELEN]; 330 u32 origsize, tmp32, num_counters; 331 unsigned int repl_nat_size; 332 int ret; 333 int i; 334 compat_uptr_t ucntrs; 335 336 urepl = (struct compat_ipt_replace __user *)optval; 337 if (get_user(origsize, &urepl->size)) 338 return -EFAULT; 339 340 /* Hack: Causes ipchains to give correct error msg --RR */ 341 if (optlen != sizeof(*urepl) + origsize) 342 return -ENOPROTOOPT; 343 344 /* XXX Assumes that size of ipt_entry is the same both in 345 * native and compat environments. 346 */ 347 repl_nat_size = sizeof(*repl_nat) + origsize; 348 repl_nat = compat_alloc_user_space(repl_nat_size); 349 350 ret = -EFAULT; 351 if (put_user(origsize, &repl_nat->size)) 352 goto out; 353 354 if (!access_ok(VERIFY_READ, urepl, optlen) || 355 !access_ok(VERIFY_WRITE, repl_nat, optlen)) 356 goto out; 357 358 if (__copy_from_user(name, urepl->name, sizeof(urepl->name)) || 359 __copy_to_user(repl_nat->name, name, sizeof(repl_nat->name))) 360 goto out; 361 362 if (__get_user(tmp32, &urepl->valid_hooks) || 363 __put_user(tmp32, &repl_nat->valid_hooks)) 364 goto out; 365 366 if (__get_user(tmp32, &urepl->num_entries) || 367 __put_user(tmp32, &repl_nat->num_entries)) 368 goto out; 369 370 if (__get_user(num_counters, &urepl->num_counters) || 371 __put_user(num_counters, &repl_nat->num_counters)) 372 goto out; 373 374 if (__get_user(ucntrs, &urepl->counters) || 375 __put_user(compat_ptr(ucntrs), &repl_nat->counters)) 376 goto out; 377 378 if (__copy_in_user(&repl_nat->entries[0], 379 &urepl->entries[0], 380 origsize)) 381 goto out; 382 383 for (i = 0; i < NF_IP_NUMHOOKS; i++) { 384 if (__get_user(tmp32, &urepl->hook_entry[i]) || 385 __put_user(tmp32, &repl_nat->hook_entry[i]) || 386 __get_user(tmp32, &urepl->underflow[i]) || 387 __put_user(tmp32, &repl_nat->underflow[i])) 388 goto out; 389 } 390 391 /* 392 * Since struct ipt_counters just contains two u_int64_t members 393 * we can just do the access_ok check here and pass the (converted) 394 * pointer into the standard syscall. We hope that the pointer is 395 * not misaligned ... 396 */ 397 if (!access_ok(VERIFY_WRITE, compat_ptr(ucntrs), 398 num_counters * sizeof(struct ipt_counters))) 399 goto out; 400 401 402 ret = sys_setsockopt(fd, level, optname, 403 (char __user *)repl_nat, repl_nat_size); 404 405 out: 406 return ret; 407 } 408 409 /* 410 * A struct sock_filter is architecture independent. 411 */ 412 struct compat_sock_fprog { 413 u16 len; 414 compat_uptr_t filter; /* struct sock_filter * */ 415 }; 416 417 static int do_set_attach_filter(struct socket *sock, int level, int optname, 418 char __user *optval, int optlen) 419 { 420 struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval; 421 struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog)); 422 compat_uptr_t ptr; 423 u16 len; 424 425 if (!access_ok(VERIFY_READ, fprog32, sizeof(*fprog32)) || 426 !access_ok(VERIFY_WRITE, kfprog, sizeof(struct sock_fprog)) || 427 __get_user(len, &fprog32->len) || 428 __get_user(ptr, &fprog32->filter) || 429 __put_user(len, &kfprog->len) || 430 __put_user(compat_ptr(ptr), &kfprog->filter)) 431 return -EFAULT; 432 433 return sock_setsockopt(sock, level, optname, (char __user *)kfprog, 434 sizeof(struct sock_fprog)); 435 } 436 437 static int do_set_sock_timeout(struct socket *sock, int level, 438 int optname, char __user *optval, int optlen) 439 { 440 struct compat_timeval __user *up = (struct compat_timeval __user *) optval; 441 struct timeval ktime; 442 mm_segment_t old_fs; 443 int err; 444 445 if (optlen < sizeof(*up)) 446 return -EINVAL; 447 if (!access_ok(VERIFY_READ, up, sizeof(*up)) || 448 __get_user(ktime.tv_sec, &up->tv_sec) || 449 __get_user(ktime.tv_usec, &up->tv_usec)) 450 return -EFAULT; 451 old_fs = get_fs(); 452 set_fs(KERNEL_DS); 453 err = sock_setsockopt(sock, level, optname, (char *) &ktime, sizeof(ktime)); 454 set_fs(old_fs); 455 456 return err; 457 } 458 459 static int compat_sock_setsockopt(struct socket *sock, int level, int optname, 460 char __user *optval, int optlen) 461 { 462 if (optname == SO_ATTACH_FILTER) 463 return do_set_attach_filter(sock, level, optname, 464 optval, optlen); 465 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO) 466 return do_set_sock_timeout(sock, level, optname, optval, optlen); 467 468 return sock_setsockopt(sock, level, optname, optval, optlen); 469 } 470 471 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, 472 char __user *optval, int optlen) 473 { 474 int err; 475 struct socket *sock; 476 477 if (level == SOL_IPV6 && optname == IPT_SO_SET_REPLACE) 478 return do_netfilter_replace(fd, level, optname, 479 optval, optlen); 480 481 if (optlen < 0) 482 return -EINVAL; 483 484 if ((sock = sockfd_lookup(fd, &err))!=NULL) 485 { 486 err = security_socket_setsockopt(sock,level,optname); 487 if (err) { 488 sockfd_put(sock); 489 return err; 490 } 491 492 if (level == SOL_SOCKET) 493 err = compat_sock_setsockopt(sock, level, 494 optname, optval, optlen); 495 else if (sock->ops->compat_setsockopt) 496 err = sock->ops->compat_setsockopt(sock, level, 497 optname, optval, optlen); 498 else 499 err = sock->ops->setsockopt(sock, level, 500 optname, optval, optlen); 501 sockfd_put(sock); 502 } 503 return err; 504 } 505 506 static int do_get_sock_timeout(struct socket *sock, int level, int optname, 507 char __user *optval, int __user *optlen) 508 { 509 struct compat_timeval __user *up; 510 struct timeval ktime; 511 mm_segment_t old_fs; 512 int len, err; 513 514 up = (struct compat_timeval __user *) optval; 515 if (get_user(len, optlen)) 516 return -EFAULT; 517 if (len < sizeof(*up)) 518 return -EINVAL; 519 len = sizeof(ktime); 520 old_fs = get_fs(); 521 set_fs(KERNEL_DS); 522 err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len); 523 set_fs(old_fs); 524 525 if (!err) { 526 if (put_user(sizeof(*up), optlen) || 527 !access_ok(VERIFY_WRITE, up, sizeof(*up)) || 528 __put_user(ktime.tv_sec, &up->tv_sec) || 529 __put_user(ktime.tv_usec, &up->tv_usec)) 530 err = -EFAULT; 531 } 532 return err; 533 } 534 535 static int compat_sock_getsockopt(struct socket *sock, int level, int optname, 536 char __user *optval, int __user *optlen) 537 { 538 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO) 539 return do_get_sock_timeout(sock, level, optname, optval, optlen); 540 return sock_getsockopt(sock, level, optname, optval, optlen); 541 } 542 543 int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp) 544 { 545 struct compat_timeval __user *ctv = 546 (struct compat_timeval __user*) userstamp; 547 int err = -ENOENT; 548 549 if (!sock_flag(sk, SOCK_TIMESTAMP)) 550 sock_enable_timestamp(sk); 551 if (sk->sk_stamp.tv_sec == -1) 552 return err; 553 if (sk->sk_stamp.tv_sec == 0) 554 do_gettimeofday(&sk->sk_stamp); 555 if (put_user(sk->sk_stamp.tv_sec, &ctv->tv_sec) || 556 put_user(sk->sk_stamp.tv_usec, &ctv->tv_usec)) 557 err = -EFAULT; 558 return err; 559 } 560 EXPORT_SYMBOL(compat_sock_get_timestamp); 561 562 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, 563 char __user *optval, int __user *optlen) 564 { 565 int err; 566 struct socket *sock; 567 568 if ((sock = sockfd_lookup(fd, &err))!=NULL) 569 { 570 err = security_socket_getsockopt(sock, level, 571 optname); 572 if (err) { 573 sockfd_put(sock); 574 return err; 575 } 576 577 if (level == SOL_SOCKET) 578 err = compat_sock_getsockopt(sock, level, 579 optname, optval, optlen); 580 else if (sock->ops->compat_getsockopt) 581 err = sock->ops->compat_getsockopt(sock, level, 582 optname, optval, optlen); 583 else 584 err = sock->ops->getsockopt(sock, level, 585 optname, optval, optlen); 586 sockfd_put(sock); 587 } 588 return err; 589 } 590 /* Argument list sizes for compat_sys_socketcall */ 591 #define AL(x) ((x) * sizeof(u32)) 592 static unsigned char nas[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), 593 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6), 594 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)}; 595 #undef AL 596 597 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, unsigned flags) 598 { 599 return sys_sendmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT); 600 } 601 602 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, unsigned int flags) 603 { 604 return sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT); 605 } 606 607 asmlinkage long compat_sys_socketcall(int call, u32 __user *args) 608 { 609 int ret; 610 u32 a[6]; 611 u32 a0, a1; 612 613 if (call < SYS_SOCKET || call > SYS_RECVMSG) 614 return -EINVAL; 615 if (copy_from_user(a, args, nas[call])) 616 return -EFAULT; 617 a0 = a[0]; 618 a1 = a[1]; 619 620 switch(call) { 621 case SYS_SOCKET: 622 ret = sys_socket(a0, a1, a[2]); 623 break; 624 case SYS_BIND: 625 ret = sys_bind(a0, compat_ptr(a1), a[2]); 626 break; 627 case SYS_CONNECT: 628 ret = sys_connect(a0, compat_ptr(a1), a[2]); 629 break; 630 case SYS_LISTEN: 631 ret = sys_listen(a0, a1); 632 break; 633 case SYS_ACCEPT: 634 ret = sys_accept(a0, compat_ptr(a1), compat_ptr(a[2])); 635 break; 636 case SYS_GETSOCKNAME: 637 ret = sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2])); 638 break; 639 case SYS_GETPEERNAME: 640 ret = sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2])); 641 break; 642 case SYS_SOCKETPAIR: 643 ret = sys_socketpair(a0, a1, a[2], compat_ptr(a[3])); 644 break; 645 case SYS_SEND: 646 ret = sys_send(a0, compat_ptr(a1), a[2], a[3]); 647 break; 648 case SYS_SENDTO: 649 ret = sys_sendto(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), a[5]); 650 break; 651 case SYS_RECV: 652 ret = sys_recv(a0, compat_ptr(a1), a[2], a[3]); 653 break; 654 case SYS_RECVFROM: 655 ret = sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), compat_ptr(a[5])); 656 break; 657 case SYS_SHUTDOWN: 658 ret = sys_shutdown(a0,a1); 659 break; 660 case SYS_SETSOCKOPT: 661 ret = compat_sys_setsockopt(a0, a1, a[2], 662 compat_ptr(a[3]), a[4]); 663 break; 664 case SYS_GETSOCKOPT: 665 ret = compat_sys_getsockopt(a0, a1, a[2], 666 compat_ptr(a[3]), compat_ptr(a[4])); 667 break; 668 case SYS_SENDMSG: 669 ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]); 670 break; 671 case SYS_RECVMSG: 672 ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]); 673 break; 674 default: 675 ret = -EINVAL; 676 break; 677 } 678 return ret; 679 } 680