| 1 | /* $NetBSD: linux_socket.c,v 1.133 2016/09/13 07:01:07 martin Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1995, 1998, 2008 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Frank van der Linden and Eric Haszlakiewicz. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | /* |
| 33 | * Functions in multiarch: |
| 34 | * linux_sys_socketcall : linux_socketcall.c |
| 35 | */ |
| 36 | |
| 37 | #include <sys/cdefs.h> |
| 38 | __KERNEL_RCSID(0, "$NetBSD: linux_socket.c,v 1.133 2016/09/13 07:01:07 martin Exp $" ); |
| 39 | |
| 40 | #if defined(_KERNEL_OPT) |
| 41 | #include "opt_inet.h" |
| 42 | #endif /* defined(_KERNEL_OPT) */ |
| 43 | |
| 44 | #include <sys/param.h> |
| 45 | #include <sys/kernel.h> |
| 46 | #include <sys/systm.h> |
| 47 | #include <sys/buf.h> |
| 48 | #include <sys/ioctl.h> |
| 49 | #include <sys/tty.h> |
| 50 | #include <sys/file.h> |
| 51 | #include <sys/filedesc.h> |
| 52 | #include <sys/select.h> |
| 53 | #include <sys/socket.h> |
| 54 | #include <sys/socketvar.h> |
| 55 | #include <sys/domain.h> |
| 56 | #include <net/if.h> |
| 57 | #include <net/if_dl.h> |
| 58 | #include <net/if_types.h> |
| 59 | #include <netinet/in.h> |
| 60 | #include <netinet/tcp.h> |
| 61 | #include <sys/mount.h> |
| 62 | #include <sys/proc.h> |
| 63 | #include <sys/vnode.h> |
| 64 | #include <sys/device.h> |
| 65 | #include <sys/protosw.h> |
| 66 | #include <sys/mbuf.h> |
| 67 | #include <sys/syslog.h> |
| 68 | #include <sys/exec.h> |
| 69 | #include <sys/kauth.h> |
| 70 | #include <sys/syscallargs.h> |
| 71 | #include <sys/ktrace.h> |
| 72 | |
| 73 | #include <lib/libkern/libkern.h> |
| 74 | |
| 75 | #include <netinet/ip6.h> |
| 76 | #include <netinet6/ip6_var.h> |
| 77 | |
| 78 | #include <compat/sys/socket.h> |
| 79 | #include <compat/sys/sockio.h> |
| 80 | |
| 81 | #include <compat/linux/common/linux_types.h> |
| 82 | #include <compat/linux/common/linux_util.h> |
| 83 | #include <compat/linux/common/linux_signal.h> |
| 84 | #include <compat/linux/common/linux_ioctl.h> |
| 85 | #include <compat/linux/common/linux_socket.h> |
| 86 | #include <compat/linux/common/linux_fcntl.h> |
| 87 | #if !defined(__alpha__) && !defined(__amd64__) |
| 88 | #include <compat/linux/common/linux_socketcall.h> |
| 89 | #endif |
| 90 | #include <compat/linux/common/linux_sockio.h> |
| 91 | #include <compat/linux/common/linux_ipc.h> |
| 92 | #include <compat/linux/common/linux_sem.h> |
| 93 | |
| 94 | #include <compat/linux/linux_syscallargs.h> |
| 95 | |
| 96 | #ifdef DEBUG_LINUX |
| 97 | #define DPRINTF(a) uprintf a |
| 98 | #else |
| 99 | #define DPRINTF(a) |
| 100 | #endif |
| 101 | |
| 102 | /* |
| 103 | * The calls in this file are entered either via the linux_socketcall() |
| 104 | * interface or, on the Alpha, as individual syscalls. The |
| 105 | * linux_socketcall function does any massaging of arguments so that all |
| 106 | * the calls in here need not think that they are anything other |
| 107 | * than a normal syscall. |
| 108 | */ |
| 109 | |
| 110 | static int linux_to_bsd_domain(int); |
| 111 | static int bsd_to_linux_domain(int); |
| 112 | static int linux_to_bsd_type(int); |
| 113 | int linux_to_bsd_sopt_level(int); |
| 114 | int linux_to_bsd_so_sockopt(int); |
| 115 | int linux_to_bsd_ip_sockopt(int); |
| 116 | int linux_to_bsd_ipv6_sockopt(int); |
| 117 | int linux_to_bsd_tcp_sockopt(int); |
| 118 | int linux_to_bsd_udp_sockopt(int); |
| 119 | int linux_getifname(struct lwp *, register_t *, void *); |
| 120 | int linux_getifconf(struct lwp *, register_t *, void *); |
| 121 | int linux_getifhwaddr(struct lwp *, register_t *, u_int, void *); |
| 122 | static int linux_get_sa(struct lwp *, int, struct sockaddr_big *, |
| 123 | const struct osockaddr *, socklen_t); |
| 124 | static int linux_sa_put(struct osockaddr *osa); |
| 125 | static int linux_to_bsd_msg_flags(int); |
| 126 | static int bsd_to_linux_msg_flags(int); |
| 127 | static void linux_to_bsd_msghdr(struct linux_msghdr *, struct msghdr *); |
| 128 | static void bsd_to_linux_msghdr(struct msghdr *, struct linux_msghdr *); |
| 129 | |
| 130 | static const int linux_to_bsd_domain_[LINUX_AF_MAX] = { |
| 131 | AF_UNSPEC, |
| 132 | AF_UNIX, |
| 133 | AF_INET, |
| 134 | AF_CCITT, /* LINUX_AF_AX25 */ |
| 135 | AF_IPX, |
| 136 | AF_APPLETALK, |
| 137 | -1, /* LINUX_AF_NETROM */ |
| 138 | -1, /* LINUX_AF_BRIDGE */ |
| 139 | -1, /* LINUX_AF_ATMPVC */ |
| 140 | AF_CCITT, /* LINUX_AF_X25 */ |
| 141 | AF_INET6, |
| 142 | -1, /* LINUX_AF_ROSE */ |
| 143 | AF_DECnet, |
| 144 | -1, /* LINUX_AF_NETBEUI */ |
| 145 | -1, /* LINUX_AF_SECURITY */ |
| 146 | pseudo_AF_KEY, |
| 147 | AF_ROUTE, /* LINUX_AF_NETLINK */ |
| 148 | -1, /* LINUX_AF_PACKET */ |
| 149 | -1, /* LINUX_AF_ASH */ |
| 150 | -1, /* LINUX_AF_ECONET */ |
| 151 | -1, /* LINUX_AF_ATMSVC */ |
| 152 | AF_SNA, |
| 153 | /* rest up to LINUX_AF_MAX-1 is not allocated */ |
| 154 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 155 | }; |
| 156 | |
| 157 | static const int bsd_to_linux_domain_[AF_MAX] = { |
| 158 | LINUX_AF_UNSPEC, |
| 159 | LINUX_AF_UNIX, |
| 160 | LINUX_AF_INET, |
| 161 | -1, /* AF_IMPLINK */ |
| 162 | -1, /* AF_PUP */ |
| 163 | -1, /* AF_CHAOS */ |
| 164 | -1, /* AF_NS */ |
| 165 | -1, /* AF_ISO */ |
| 166 | -1, /* AF_ECMA */ |
| 167 | -1, /* AF_DATAKIT */ |
| 168 | LINUX_AF_AX25, /* AF_CCITT */ |
| 169 | LINUX_AF_SNA, |
| 170 | LINUX_AF_DECnet, |
| 171 | -1, /* AF_DLI */ |
| 172 | -1, /* AF_LAT */ |
| 173 | -1, /* AF_HYLINK */ |
| 174 | LINUX_AF_APPLETALK, |
| 175 | LINUX_AF_NETLINK, |
| 176 | -1, /* AF_LINK */ |
| 177 | -1, /* AF_XTP */ |
| 178 | -1, /* AF_COIP */ |
| 179 | -1, /* AF_CNT */ |
| 180 | -1, /* pseudo_AF_RTIP */ |
| 181 | LINUX_AF_IPX, |
| 182 | LINUX_AF_INET6, |
| 183 | -1, /* pseudo_AF_PIP */ |
| 184 | -1, /* AF_ISDN */ |
| 185 | -1, /* AF_NATM */ |
| 186 | -1, /* AF_ARP */ |
| 187 | LINUX_pseudo_AF_KEY, |
| 188 | -1, /* pseudo_AF_HDRCMPLT */ |
| 189 | }; |
| 190 | |
| 191 | static const struct { |
| 192 | int bfl; |
| 193 | int lfl; |
| 194 | } bsd_to_linux_msg_flags_[] = { |
| 195 | {MSG_OOB, LINUX_MSG_OOB}, |
| 196 | {MSG_PEEK, LINUX_MSG_PEEK}, |
| 197 | {MSG_DONTROUTE, LINUX_MSG_DONTROUTE}, |
| 198 | {MSG_EOR, LINUX_MSG_EOR}, |
| 199 | {MSG_TRUNC, LINUX_MSG_TRUNC}, |
| 200 | {MSG_CTRUNC, LINUX_MSG_CTRUNC}, |
| 201 | {MSG_WAITALL, LINUX_MSG_WAITALL}, |
| 202 | {MSG_DONTWAIT, LINUX_MSG_DONTWAIT}, |
| 203 | {MSG_BCAST, 0}, /* not supported, clear */ |
| 204 | {MSG_MCAST, 0}, /* not supported, clear */ |
| 205 | {MSG_NOSIGNAL, LINUX_MSG_NOSIGNAL}, |
| 206 | {-1, /* not supp */ LINUX_MSG_PROBE}, |
| 207 | {-1, /* not supp */ LINUX_MSG_FIN}, |
| 208 | {-1, /* not supp */ LINUX_MSG_SYN}, |
| 209 | {-1, /* not supp */ LINUX_MSG_CONFIRM}, |
| 210 | {-1, /* not supp */ LINUX_MSG_RST}, |
| 211 | {-1, /* not supp */ LINUX_MSG_ERRQUEUE}, |
| 212 | {-1, /* not supp */ LINUX_MSG_MORE}, |
| 213 | }; |
| 214 | |
| 215 | /* |
| 216 | * Convert between Linux and BSD socket domain values |
| 217 | */ |
| 218 | static int |
| 219 | linux_to_bsd_domain(int ldom) |
| 220 | { |
| 221 | if (ldom < 0 || ldom >= LINUX_AF_MAX) |
| 222 | return (-1); |
| 223 | |
| 224 | return linux_to_bsd_domain_[ldom]; |
| 225 | } |
| 226 | |
| 227 | /* |
| 228 | * Convert between BSD and Linux socket domain values |
| 229 | */ |
| 230 | static int |
| 231 | bsd_to_linux_domain(int bdom) |
| 232 | { |
| 233 | if (bdom < 0 || bdom >= AF_MAX) |
| 234 | return (-1); |
| 235 | |
| 236 | return bsd_to_linux_domain_[bdom]; |
| 237 | } |
| 238 | |
| 239 | static int |
| 240 | linux_to_bsd_type(int ltype) |
| 241 | { |
| 242 | int type, flags; |
| 243 | |
| 244 | /* Real types are identical between Linux and NetBSD */ |
| 245 | type = ltype & LINUX_SOCK_TYPE_MASK; |
| 246 | |
| 247 | /* But flags are not .. */ |
| 248 | flags = ltype & ~LINUX_SOCK_TYPE_MASK; |
| 249 | if (flags & ~(LINUX_SOCK_CLOEXEC|LINUX_SOCK_NONBLOCK)) |
| 250 | return -1; |
| 251 | |
| 252 | if (flags & LINUX_SOCK_CLOEXEC) |
| 253 | type |= SOCK_CLOEXEC; |
| 254 | if (flags & LINUX_SOCK_NONBLOCK) |
| 255 | type |= SOCK_NONBLOCK; |
| 256 | |
| 257 | return type; |
| 258 | } |
| 259 | |
| 260 | static int |
| 261 | linux_to_bsd_msg_flags(int lflag) |
| 262 | { |
| 263 | int i, lfl, bfl; |
| 264 | int bflag = 0; |
| 265 | |
| 266 | if (lflag == 0) |
| 267 | return (0); |
| 268 | |
| 269 | for(i = 0; i < __arraycount(bsd_to_linux_msg_flags_); i++) { |
| 270 | bfl = bsd_to_linux_msg_flags_[i].bfl; |
| 271 | lfl = bsd_to_linux_msg_flags_[i].lfl; |
| 272 | |
| 273 | if (lfl == 0) |
| 274 | continue; |
| 275 | |
| 276 | if (lflag & lfl) { |
| 277 | if (bfl < 0) |
| 278 | return (-1); |
| 279 | |
| 280 | bflag |= bfl; |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | return (bflag); |
| 285 | } |
| 286 | |
| 287 | static int |
| 288 | bsd_to_linux_msg_flags(int bflag) |
| 289 | { |
| 290 | int i, lfl, bfl; |
| 291 | int lflag = 0; |
| 292 | |
| 293 | if (bflag == 0) |
| 294 | return (0); |
| 295 | |
| 296 | for(i = 0; i < __arraycount(bsd_to_linux_msg_flags_); i++) { |
| 297 | bfl = bsd_to_linux_msg_flags_[i].bfl; |
| 298 | lfl = bsd_to_linux_msg_flags_[i].lfl; |
| 299 | |
| 300 | if (bfl <= 0) |
| 301 | continue; |
| 302 | |
| 303 | if (bflag & bfl) { |
| 304 | if (lfl < 0) |
| 305 | return (-1); |
| 306 | |
| 307 | lflag |= lfl; |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | return (lflag); |
| 312 | } |
| 313 | |
| 314 | int |
| 315 | linux_sys_socket(struct lwp *l, const struct linux_sys_socket_args *uap, register_t *retval) |
| 316 | { |
| 317 | /* { |
| 318 | syscallarg(int) domain; |
| 319 | syscallarg(int) type; |
| 320 | syscallarg(int) protocol; |
| 321 | } */ |
| 322 | struct sys___socket30_args bsa; |
| 323 | int error; |
| 324 | |
| 325 | |
| 326 | SCARG(&bsa, protocol) = SCARG(uap, protocol); |
| 327 | SCARG(&bsa, domain) = linux_to_bsd_domain(SCARG(uap, domain)); |
| 328 | if (SCARG(&bsa, domain) == -1) |
| 329 | return EINVAL; |
| 330 | SCARG(&bsa, type) = linux_to_bsd_type(SCARG(uap, type)); |
| 331 | if (SCARG(&bsa, type) == -1) |
| 332 | return EINVAL; |
| 333 | /* |
| 334 | * Apparently linux uses this to talk to ISDN sockets. If we fail |
| 335 | * now programs seems to handle it, but if we don't we are going |
| 336 | * to fail when we bind and programs don't handle this well. |
| 337 | */ |
| 338 | if (SCARG(&bsa, domain) == AF_ROUTE && SCARG(&bsa, type) == SOCK_RAW) |
| 339 | return ENOTSUP; |
| 340 | error = sys___socket30(l, &bsa, retval); |
| 341 | |
| 342 | #ifdef INET6 |
| 343 | /* |
| 344 | * Linux AF_INET6 socket has IPV6_V6ONLY setsockopt set to 0 by |
| 345 | * default and some apps depend on this. So, set V6ONLY to 0 |
| 346 | * for Linux apps if the sysctl value is set to 1. |
| 347 | */ |
| 348 | if (!error && ip6_v6only && SCARG(&bsa, domain) == PF_INET6) { |
| 349 | struct socket *so; |
| 350 | |
| 351 | if (fd_getsock(*retval, &so) == 0) { |
| 352 | int val = 0; |
| 353 | |
| 354 | /* ignore error */ |
| 355 | (void)so_setsockopt(l, so, IPPROTO_IPV6, IPV6_V6ONLY, |
| 356 | &val, sizeof(val)); |
| 357 | |
| 358 | fd_putfile(*retval); |
| 359 | } |
| 360 | } |
| 361 | #endif |
| 362 | |
| 363 | return (error); |
| 364 | } |
| 365 | |
| 366 | int |
| 367 | linux_sys_socketpair(struct lwp *l, const struct linux_sys_socketpair_args *uap, register_t *retval) |
| 368 | { |
| 369 | /* { |
| 370 | syscallarg(int) domain; |
| 371 | syscallarg(int) type; |
| 372 | syscallarg(int) protocol; |
| 373 | syscallarg(int *) rsv; |
| 374 | } */ |
| 375 | struct sys_socketpair_args bsa; |
| 376 | |
| 377 | SCARG(&bsa, domain) = linux_to_bsd_domain(SCARG(uap, domain)); |
| 378 | if (SCARG(&bsa, domain) == -1) |
| 379 | return EINVAL; |
| 380 | SCARG(&bsa, type) = linux_to_bsd_type(SCARG(uap, type)); |
| 381 | if (SCARG(&bsa, type) == -1) |
| 382 | return EINVAL; |
| 383 | SCARG(&bsa, protocol) = SCARG(uap, protocol); |
| 384 | SCARG(&bsa, rsv) = SCARG(uap, rsv); |
| 385 | |
| 386 | return sys_socketpair(l, &bsa, retval); |
| 387 | } |
| 388 | |
| 389 | int |
| 390 | linux_sys_sendto(struct lwp *l, const struct linux_sys_sendto_args *uap, register_t *retval) |
| 391 | { |
| 392 | /* { |
| 393 | syscallarg(int) s; |
| 394 | syscallarg(void *) msg; |
| 395 | syscallarg(int) len; |
| 396 | syscallarg(int) flags; |
| 397 | syscallarg(struct osockaddr *) to; |
| 398 | syscallarg(int) tolen; |
| 399 | } */ |
| 400 | struct msghdr msg; |
| 401 | struct iovec aiov; |
| 402 | struct sockaddr_big nam; |
| 403 | int bflags; |
| 404 | int error; |
| 405 | |
| 406 | /* Translate message flags. */ |
| 407 | bflags = linux_to_bsd_msg_flags(SCARG(uap, flags)); |
| 408 | if (bflags < 0) |
| 409 | /* Some supported flag */ |
| 410 | return EINVAL; |
| 411 | |
| 412 | msg.msg_flags = 0; |
| 413 | msg.msg_name = NULL; |
| 414 | msg.msg_control = NULL; |
| 415 | |
| 416 | if (SCARG(uap, tolen)) { |
| 417 | /* Read in and convert the sockaddr */ |
| 418 | error = linux_get_sa(l, SCARG(uap, s), &nam, SCARG(uap, to), |
| 419 | SCARG(uap, tolen)); |
| 420 | if (error) |
| 421 | return (error); |
| 422 | msg.msg_name = &nam; |
| 423 | msg.msg_namelen = SCARG(uap, tolen); |
| 424 | } |
| 425 | |
| 426 | msg.msg_iov = &aiov; |
| 427 | msg.msg_iovlen = 1; |
| 428 | aiov.iov_base = __UNCONST(SCARG(uap, msg)); |
| 429 | aiov.iov_len = SCARG(uap, len); |
| 430 | |
| 431 | return do_sys_sendmsg(l, SCARG(uap, s), &msg, bflags, |
| 432 | NULL, 0, retval); |
| 433 | } |
| 434 | |
| 435 | static void |
| 436 | linux_to_bsd_msghdr(struct linux_msghdr *lmsg, struct msghdr *bmsg) |
| 437 | { |
| 438 | bmsg->msg_name = lmsg->msg_name; |
| 439 | bmsg->msg_namelen = lmsg->msg_namelen; |
| 440 | bmsg->msg_iov = lmsg->msg_iov; |
| 441 | bmsg->msg_iovlen = lmsg->msg_iovlen; |
| 442 | bmsg->msg_control = lmsg->msg_control; |
| 443 | bmsg->msg_controllen = lmsg->msg_controllen; |
| 444 | bmsg->msg_flags = lmsg->msg_flags; |
| 445 | } |
| 446 | |
| 447 | static void |
| 448 | bsd_to_linux_msghdr(struct msghdr *bmsg, struct linux_msghdr *lmsg) |
| 449 | { |
| 450 | lmsg->msg_name = bmsg->msg_name; |
| 451 | lmsg->msg_namelen = bmsg->msg_namelen; |
| 452 | lmsg->msg_iov = bmsg->msg_iov; |
| 453 | lmsg->msg_iovlen = bmsg->msg_iovlen; |
| 454 | lmsg->msg_control = bmsg->msg_control; |
| 455 | lmsg->msg_controllen = bmsg->msg_controllen; |
| 456 | lmsg->msg_flags = bmsg->msg_flags; |
| 457 | } |
| 458 | |
| 459 | int |
| 460 | linux_sys_sendmsg(struct lwp *l, const struct linux_sys_sendmsg_args *uap, register_t *retval) |
| 461 | { |
| 462 | /* { |
| 463 | syscallarg(int) s; |
| 464 | syscallarg(struct linux_msghdr *) msg; |
| 465 | syscallarg(u_int) flags; |
| 466 | } */ |
| 467 | struct msghdr msg; |
| 468 | struct linux_msghdr lmsg; |
| 469 | int error; |
| 470 | int bflags; |
| 471 | struct sockaddr_big nam; |
| 472 | u_int8_t *control; |
| 473 | struct mbuf *ctl_mbuf = NULL; |
| 474 | |
| 475 | error = copyin(SCARG(uap, msg), &lmsg, sizeof(lmsg)); |
| 476 | if (error) |
| 477 | return error; |
| 478 | linux_to_bsd_msghdr(&lmsg, &msg); |
| 479 | |
| 480 | msg.msg_flags = MSG_IOVUSRSPACE; |
| 481 | |
| 482 | /* |
| 483 | * Translate message flags. |
| 484 | */ |
| 485 | bflags = linux_to_bsd_msg_flags(SCARG(uap, flags)); |
| 486 | if (bflags < 0) |
| 487 | /* Some supported flag */ |
| 488 | return EINVAL; |
| 489 | |
| 490 | if (lmsg.msg_name) { |
| 491 | /* Read in and convert the sockaddr */ |
| 492 | error = linux_get_sa(l, SCARG(uap, s), &nam, msg.msg_name, |
| 493 | msg.msg_namelen); |
| 494 | if (error) |
| 495 | return (error); |
| 496 | msg.msg_name = &nam; |
| 497 | } |
| 498 | |
| 499 | /* |
| 500 | * Handle cmsg if there is any. |
| 501 | */ |
| 502 | if (LINUX_CMSG_FIRSTHDR(&lmsg)) { |
| 503 | struct linux_cmsghdr l_cmsg, *l_cc; |
| 504 | struct cmsghdr *cmsg; |
| 505 | ssize_t resid = msg.msg_controllen; |
| 506 | size_t clen, cidx = 0, cspace; |
| 507 | |
| 508 | ctl_mbuf = m_get(M_WAIT, MT_CONTROL); |
| 509 | clen = MLEN; |
| 510 | control = mtod(ctl_mbuf, void *); |
| 511 | |
| 512 | l_cc = LINUX_CMSG_FIRSTHDR(&lmsg); |
| 513 | do { |
| 514 | error = copyin(l_cc, &l_cmsg, sizeof(l_cmsg)); |
| 515 | if (error) |
| 516 | goto done; |
| 517 | |
| 518 | /* |
| 519 | * Sanity check the control message length. |
| 520 | */ |
| 521 | if (l_cmsg.cmsg_len > resid |
| 522 | || l_cmsg.cmsg_len < sizeof l_cmsg) { |
| 523 | error = EINVAL; |
| 524 | goto done; |
| 525 | } |
| 526 | |
| 527 | /* |
| 528 | * Refuse unsupported control messages, and |
| 529 | * translate fields as appropriate. |
| 530 | */ |
| 531 | switch (l_cmsg.cmsg_level) { |
| 532 | case LINUX_SOL_SOCKET: |
| 533 | /* It only differs on some archs */ |
| 534 | if (LINUX_SOL_SOCKET != SOL_SOCKET) |
| 535 | l_cmsg.cmsg_level = SOL_SOCKET; |
| 536 | |
| 537 | switch(l_cmsg.cmsg_type) { |
| 538 | case LINUX_SCM_RIGHTS: |
| 539 | /* Linux SCM_RIGHTS is same as NetBSD */ |
| 540 | break; |
| 541 | |
| 542 | case LINUX_SCM_CREDENTIALS: |
| 543 | /* no native equivalent, just drop it */ |
| 544 | m_free(ctl_mbuf); |
| 545 | ctl_mbuf = NULL; |
| 546 | msg.msg_control = NULL; |
| 547 | msg.msg_controllen = 0; |
| 548 | goto skipcmsg; |
| 549 | |
| 550 | default: |
| 551 | /* other types not supported */ |
| 552 | error = EINVAL; |
| 553 | goto done; |
| 554 | } |
| 555 | break; |
| 556 | default: |
| 557 | /* pray and leave intact */ |
| 558 | break; |
| 559 | } |
| 560 | |
| 561 | cspace = CMSG_SPACE(l_cmsg.cmsg_len - sizeof(l_cmsg)); |
| 562 | |
| 563 | /* Check the buffer is big enough */ |
| 564 | if (__predict_false(cidx + cspace > clen)) { |
| 565 | u_int8_t *nc; |
| 566 | |
| 567 | clen = cidx + cspace; |
| 568 | if (clen >= PAGE_SIZE) { |
| 569 | error = EINVAL; |
| 570 | goto done; |
| 571 | } |
| 572 | nc = realloc(clen <= MLEN ? NULL : control, |
| 573 | clen, M_TEMP, M_WAITOK); |
| 574 | if (!nc) { |
| 575 | error = ENOMEM; |
| 576 | goto done; |
| 577 | } |
| 578 | if (cidx <= MLEN) |
| 579 | /* Old buffer was in mbuf... */ |
| 580 | memcpy(nc, control, cidx); |
| 581 | control = nc; |
| 582 | } |
| 583 | |
| 584 | /* Copy header */ |
| 585 | cmsg = (void *)&control[cidx]; |
| 586 | cmsg->cmsg_len = l_cmsg.cmsg_len + LINUX_CMSG_ALIGN_DELTA; |
| 587 | cmsg->cmsg_level = l_cmsg.cmsg_level; |
| 588 | cmsg->cmsg_type = l_cmsg.cmsg_type; |
| 589 | |
| 590 | /* Zero area between header and data */ |
| 591 | memset(cmsg + 1, 0, |
| 592 | CMSG_ALIGN(sizeof(*cmsg)) - sizeof(*cmsg)); |
| 593 | |
| 594 | /* Copyin the data */ |
| 595 | error = copyin(LINUX_CMSG_DATA(l_cc), |
| 596 | CMSG_DATA(cmsg), |
| 597 | l_cmsg.cmsg_len - sizeof(l_cmsg)); |
| 598 | if (error) |
| 599 | goto done; |
| 600 | |
| 601 | resid -= LINUX_CMSG_ALIGN(l_cmsg.cmsg_len); |
| 602 | cidx += cspace; |
| 603 | } while ((l_cc = LINUX_CMSG_NXTHDR(&msg, l_cc)) && resid > 0); |
| 604 | |
| 605 | /* If we allocated a buffer, attach to mbuf */ |
| 606 | if (cidx > MLEN) { |
| 607 | MEXTADD(ctl_mbuf, control, clen, M_MBUF, NULL, NULL); |
| 608 | ctl_mbuf->m_flags |= M_EXT_RW; |
| 609 | } |
| 610 | control = NULL; |
| 611 | ctl_mbuf->m_len = cidx; |
| 612 | |
| 613 | msg.msg_control = ctl_mbuf; |
| 614 | msg.msg_flags |= MSG_CONTROLMBUF; |
| 615 | |
| 616 | ktrkuser("mbcontrol" , mtod(ctl_mbuf, void *), |
| 617 | msg.msg_controllen); |
| 618 | } |
| 619 | |
| 620 | skipcmsg: |
| 621 | error = do_sys_sendmsg(l, SCARG(uap, s), &msg, bflags, |
| 622 | NULL, 0, retval); |
| 623 | /* Freed internally */ |
| 624 | ctl_mbuf = NULL; |
| 625 | |
| 626 | done: |
| 627 | if (ctl_mbuf != NULL) { |
| 628 | if (control != NULL && control != mtod(ctl_mbuf, void *)) |
| 629 | free(control, M_MBUF); |
| 630 | m_free(ctl_mbuf); |
| 631 | } |
| 632 | return (error); |
| 633 | } |
| 634 | |
| 635 | int |
| 636 | linux_sys_recvfrom(struct lwp *l, const struct linux_sys_recvfrom_args *uap, register_t *retval) |
| 637 | { |
| 638 | /* { |
| 639 | syscallarg(int) s; |
| 640 | syscallarg(void *) buf; |
| 641 | syscallarg(int) len; |
| 642 | syscallarg(int) flags; |
| 643 | syscallarg(struct osockaddr *) from; |
| 644 | syscallarg(int *) fromlenaddr; |
| 645 | } */ |
| 646 | int error; |
| 647 | struct sys_recvfrom_args bra; |
| 648 | |
| 649 | SCARG(&bra, s) = SCARG(uap, s); |
| 650 | SCARG(&bra, buf) = SCARG(uap, buf); |
| 651 | SCARG(&bra, len) = SCARG(uap, len); |
| 652 | SCARG(&bra, flags) = SCARG(uap, flags); |
| 653 | SCARG(&bra, from) = (struct sockaddr *) SCARG(uap, from); |
| 654 | SCARG(&bra, fromlenaddr) = (socklen_t *)SCARG(uap, fromlenaddr); |
| 655 | |
| 656 | if ((error = sys_recvfrom(l, &bra, retval))) |
| 657 | return (error); |
| 658 | |
| 659 | if (SCARG(uap, from) && (error = linux_sa_put(SCARG(uap, from)))) |
| 660 | return (error); |
| 661 | |
| 662 | return (0); |
| 663 | } |
| 664 | |
| 665 | static int |
| 666 | linux_copyout_msg_control(struct lwp *l, struct msghdr *mp, struct mbuf *control) |
| 667 | { |
| 668 | int dlen, error = 0; |
| 669 | struct cmsghdr *cmsg; |
| 670 | struct linux_cmsghdr linux_cmsg; |
| 671 | struct mbuf *m; |
| 672 | char *q, *q_end; |
| 673 | |
| 674 | if (mp->msg_controllen <= 0 || control == 0) { |
| 675 | mp->msg_controllen = 0; |
| 676 | free_control_mbuf(l, control, control); |
| 677 | return 0; |
| 678 | } |
| 679 | |
| 680 | ktrkuser("msgcontrol" , mtod(control, void *), mp->msg_controllen); |
| 681 | |
| 682 | q = (char *)mp->msg_control; |
| 683 | q_end = q + mp->msg_controllen; |
| 684 | |
| 685 | for (m = control; m != NULL; ) { |
| 686 | cmsg = mtod(m, struct cmsghdr *); |
| 687 | |
| 688 | /* |
| 689 | * Fixup cmsg. We handle two things: |
| 690 | * 0. different sizeof cmsg_len. |
| 691 | * 1. different values for level/type on some archs |
| 692 | * 2. different alignment of CMSG_DATA on some archs |
| 693 | */ |
| 694 | linux_cmsg.cmsg_len = cmsg->cmsg_len - LINUX_CMSG_ALIGN_DELTA; |
| 695 | linux_cmsg.cmsg_level = cmsg->cmsg_level; |
| 696 | linux_cmsg.cmsg_type = cmsg->cmsg_type; |
| 697 | |
| 698 | dlen = q_end - q; |
| 699 | if (linux_cmsg.cmsg_len > dlen) { |
| 700 | /* Not enough room for the parameter */ |
| 701 | dlen -= sizeof linux_cmsg; |
| 702 | if (dlen <= 0) |
| 703 | /* Discard if header wont fit */ |
| 704 | break; |
| 705 | mp->msg_flags |= MSG_CTRUNC; |
| 706 | if (linux_cmsg.cmsg_level == SOL_SOCKET |
| 707 | && linux_cmsg.cmsg_type == SCM_RIGHTS) |
| 708 | /* Do not truncate me ... */ |
| 709 | break; |
| 710 | } else |
| 711 | dlen = linux_cmsg.cmsg_len - sizeof linux_cmsg; |
| 712 | |
| 713 | switch (linux_cmsg.cmsg_level) { |
| 714 | case SOL_SOCKET: |
| 715 | linux_cmsg.cmsg_level = LINUX_SOL_SOCKET; |
| 716 | switch (linux_cmsg.cmsg_type) { |
| 717 | case SCM_RIGHTS: |
| 718 | /* Linux SCM_RIGHTS is same as NetBSD */ |
| 719 | break; |
| 720 | |
| 721 | default: |
| 722 | /* other types not supported */ |
| 723 | error = EINVAL; |
| 724 | goto done; |
| 725 | } |
| 726 | /* machine dependent ! */ |
| 727 | break; |
| 728 | default: |
| 729 | /* pray and leave intact */ |
| 730 | break; |
| 731 | } |
| 732 | |
| 733 | /* There can be padding between the header and data... */ |
| 734 | error = copyout(&linux_cmsg, q, sizeof linux_cmsg); |
| 735 | if (error != 0) { |
| 736 | error = copyout(CCMSG_DATA(cmsg), q + sizeof linux_cmsg, |
| 737 | dlen); |
| 738 | } |
| 739 | if (error != 0) { |
| 740 | /* We must free all the SCM_RIGHTS */ |
| 741 | m = control; |
| 742 | break; |
| 743 | } |
| 744 | m = m->m_next; |
| 745 | if (m == NULL || q + LINUX_CMSG_SPACE(dlen) > q_end) { |
| 746 | q += LINUX_CMSG_LEN(dlen); |
| 747 | break; |
| 748 | } |
| 749 | q += LINUX_CMSG_SPACE(dlen); |
| 750 | } |
| 751 | |
| 752 | done: |
| 753 | free_control_mbuf(l, control, m); |
| 754 | |
| 755 | mp->msg_controllen = q - (char *)mp->msg_control; |
| 756 | return error; |
| 757 | } |
| 758 | |
| 759 | int |
| 760 | linux_sys_recvmsg(struct lwp *l, const struct linux_sys_recvmsg_args *uap, register_t *retval) |
| 761 | { |
| 762 | /* { |
| 763 | syscallarg(int) s; |
| 764 | syscallarg(struct linux_msghdr *) msg; |
| 765 | syscallarg(u_int) flags; |
| 766 | } */ |
| 767 | struct msghdr msg; |
| 768 | struct linux_msghdr lmsg; |
| 769 | int error; |
| 770 | struct mbuf *from, *control; |
| 771 | |
| 772 | error = copyin(SCARG(uap, msg), &lmsg, sizeof(lmsg)); |
| 773 | if (error) |
| 774 | return (error); |
| 775 | linux_to_bsd_msghdr(&lmsg, &msg); |
| 776 | |
| 777 | msg.msg_flags = linux_to_bsd_msg_flags(SCARG(uap, flags)); |
| 778 | if (msg.msg_flags < 0) { |
| 779 | /* Some unsupported flag */ |
| 780 | return (EINVAL); |
| 781 | } |
| 782 | msg.msg_flags |= MSG_IOVUSRSPACE; |
| 783 | |
| 784 | error = do_sys_recvmsg(l, SCARG(uap, s), &msg, NULL, 0, &from, |
| 785 | msg.msg_control != NULL ? &control : NULL, retval); |
| 786 | if (error != 0) |
| 787 | return error; |
| 788 | |
| 789 | if (msg.msg_control != NULL) |
| 790 | error = linux_copyout_msg_control(l, &msg, control); |
| 791 | |
| 792 | if (error == 0 && from != 0) { |
| 793 | mtod(from, struct osockaddr *)->sa_family = |
| 794 | bsd_to_linux_domain(mtod(from, struct sockaddr *)->sa_family); |
| 795 | error = copyout_sockname(msg.msg_name, &msg.msg_namelen, 0, |
| 796 | from); |
| 797 | } else |
| 798 | msg.msg_namelen = 0; |
| 799 | |
| 800 | if (from != NULL) |
| 801 | m_free(from); |
| 802 | |
| 803 | if (error == 0) { |
| 804 | msg.msg_flags = bsd_to_linux_msg_flags(msg.msg_flags); |
| 805 | if (msg.msg_flags < 0) |
| 806 | /* Some flag unsupported by Linux */ |
| 807 | error = EINVAL; |
| 808 | else { |
| 809 | ktrkuser("msghdr" , &msg, sizeof(msg)); |
| 810 | bsd_to_linux_msghdr(&msg, &lmsg); |
| 811 | error = copyout(&lmsg, SCARG(uap, msg), sizeof(lmsg)); |
| 812 | } |
| 813 | } |
| 814 | |
| 815 | return (error); |
| 816 | } |
| 817 | |
| 818 | /* |
| 819 | * Convert socket option level from Linux to NetBSD value. Only SOL_SOCKET |
| 820 | * is different, the rest matches IPPROTO_* on both systems. |
| 821 | */ |
| 822 | int |
| 823 | linux_to_bsd_sopt_level(int llevel) |
| 824 | { |
| 825 | |
| 826 | switch (llevel) { |
| 827 | case LINUX_SOL_SOCKET: |
| 828 | return SOL_SOCKET; |
| 829 | case LINUX_SOL_IP: |
| 830 | return IPPROTO_IP; |
| 831 | #ifdef INET6 |
| 832 | case LINUX_SOL_IPV6: |
| 833 | return IPPROTO_IPV6; |
| 834 | #endif |
| 835 | case LINUX_SOL_TCP: |
| 836 | return IPPROTO_TCP; |
| 837 | case LINUX_SOL_UDP: |
| 838 | return IPPROTO_UDP; |
| 839 | default: |
| 840 | return -1; |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | /* |
| 845 | * Convert Linux socket level socket option numbers to NetBSD values. |
| 846 | */ |
| 847 | int |
| 848 | linux_to_bsd_so_sockopt(int lopt) |
| 849 | { |
| 850 | |
| 851 | switch (lopt) { |
| 852 | case LINUX_SO_DEBUG: |
| 853 | return SO_DEBUG; |
| 854 | case LINUX_SO_REUSEADDR: |
| 855 | /* |
| 856 | * Linux does not implement SO_REUSEPORT, but allows reuse of a |
| 857 | * host:port pair through SO_REUSEADDR even if the address is not a |
| 858 | * multicast-address. Effectively, this means that we should use |
| 859 | * SO_REUSEPORT to allow Linux applications to not exit with |
| 860 | * EADDRINUSE |
| 861 | */ |
| 862 | return SO_REUSEPORT; |
| 863 | case LINUX_SO_TYPE: |
| 864 | return SO_TYPE; |
| 865 | case LINUX_SO_ERROR: |
| 866 | return SO_ERROR; |
| 867 | case LINUX_SO_DONTROUTE: |
| 868 | return SO_DONTROUTE; |
| 869 | case LINUX_SO_BROADCAST: |
| 870 | return SO_BROADCAST; |
| 871 | case LINUX_SO_SNDBUF: |
| 872 | return SO_SNDBUF; |
| 873 | case LINUX_SO_RCVBUF: |
| 874 | return SO_RCVBUF; |
| 875 | case LINUX_SO_SNDLOWAT: |
| 876 | return SO_SNDLOWAT; |
| 877 | case LINUX_SO_RCVLOWAT: |
| 878 | return SO_RCVLOWAT; |
| 879 | case LINUX_SO_KEEPALIVE: |
| 880 | return SO_KEEPALIVE; |
| 881 | case LINUX_SO_OOBINLINE: |
| 882 | return SO_OOBINLINE; |
| 883 | case LINUX_SO_LINGER: |
| 884 | return SO_LINGER; |
| 885 | case LINUX_SO_ACCEPTCONN: |
| 886 | return SO_ACCEPTCONN; |
| 887 | case LINUX_SO_PRIORITY: |
| 888 | case LINUX_SO_NO_CHECK: |
| 889 | default: |
| 890 | return -1; |
| 891 | } |
| 892 | } |
| 893 | |
| 894 | /* |
| 895 | * Convert Linux IP level socket option number to NetBSD values. |
| 896 | */ |
| 897 | int |
| 898 | linux_to_bsd_ip_sockopt(int lopt) |
| 899 | { |
| 900 | |
| 901 | switch (lopt) { |
| 902 | case LINUX_IP_TOS: |
| 903 | return IP_TOS; |
| 904 | case LINUX_IP_TTL: |
| 905 | return IP_TTL; |
| 906 | case LINUX_IP_HDRINCL: |
| 907 | return IP_HDRINCL; |
| 908 | case LINUX_IP_MULTICAST_TTL: |
| 909 | return IP_MULTICAST_TTL; |
| 910 | case LINUX_IP_MULTICAST_LOOP: |
| 911 | return IP_MULTICAST_LOOP; |
| 912 | case LINUX_IP_MULTICAST_IF: |
| 913 | return IP_MULTICAST_IF; |
| 914 | case LINUX_IP_ADD_MEMBERSHIP: |
| 915 | return IP_ADD_MEMBERSHIP; |
| 916 | case LINUX_IP_DROP_MEMBERSHIP: |
| 917 | return IP_DROP_MEMBERSHIP; |
| 918 | default: |
| 919 | return -1; |
| 920 | } |
| 921 | } |
| 922 | |
| 923 | /* |
| 924 | * Convert Linux IPV6 level socket option number to NetBSD values. |
| 925 | */ |
| 926 | #ifdef INET6 |
| 927 | int |
| 928 | linux_to_bsd_ipv6_sockopt(int lopt) |
| 929 | { |
| 930 | |
| 931 | switch (lopt) { |
| 932 | case LINUX_IPV6_V6ONLY: |
| 933 | return IPV6_V6ONLY; |
| 934 | default: |
| 935 | return -1; |
| 936 | } |
| 937 | } |
| 938 | #endif |
| 939 | |
| 940 | /* |
| 941 | * Convert Linux TCP level socket option number to NetBSD values. |
| 942 | */ |
| 943 | int |
| 944 | linux_to_bsd_tcp_sockopt(int lopt) |
| 945 | { |
| 946 | |
| 947 | switch (lopt) { |
| 948 | case LINUX_TCP_NODELAY: |
| 949 | return TCP_NODELAY; |
| 950 | case LINUX_TCP_MAXSEG: |
| 951 | return TCP_MAXSEG; |
| 952 | default: |
| 953 | return -1; |
| 954 | } |
| 955 | } |
| 956 | |
| 957 | /* |
| 958 | * Convert Linux UDP level socket option number to NetBSD values. |
| 959 | */ |
| 960 | int |
| 961 | linux_to_bsd_udp_sockopt(int lopt) |
| 962 | { |
| 963 | |
| 964 | switch (lopt) { |
| 965 | default: |
| 966 | return -1; |
| 967 | } |
| 968 | } |
| 969 | |
| 970 | /* |
| 971 | * Another reasonably straightforward function: setsockopt(2). |
| 972 | * The level and option numbers are converted; the values passed |
| 973 | * are not (yet) converted, the ones currently implemented don't |
| 974 | * need conversion, as they are the same on both systems. |
| 975 | */ |
| 976 | int |
| 977 | linux_sys_setsockopt(struct lwp *l, const struct linux_sys_setsockopt_args *uap, register_t *retval) |
| 978 | { |
| 979 | /* { |
| 980 | syscallarg(int) s; |
| 981 | syscallarg(int) level; |
| 982 | syscallarg(int) optname; |
| 983 | syscallarg(void *) optval; |
| 984 | syscallarg(int) optlen; |
| 985 | } */ |
| 986 | struct sys_setsockopt_args bsa; |
| 987 | int name; |
| 988 | |
| 989 | SCARG(&bsa, s) = SCARG(uap, s); |
| 990 | SCARG(&bsa, level) = linux_to_bsd_sopt_level(SCARG(uap, level)); |
| 991 | SCARG(&bsa, val) = SCARG(uap, optval); |
| 992 | SCARG(&bsa, valsize) = SCARG(uap, optlen); |
| 993 | |
| 994 | /* |
| 995 | * Linux supports only SOL_SOCKET for AF_LOCAL domain sockets |
| 996 | * and returns EOPNOTSUPP for other levels |
| 997 | */ |
| 998 | if (SCARG(&bsa, level) != SOL_SOCKET) { |
| 999 | struct socket *so; |
| 1000 | int error, family; |
| 1001 | |
| 1002 | /* fd_getsock() will use the descriptor for us */ |
| 1003 | if ((error = fd_getsock(SCARG(&bsa, s), &so)) != 0) |
| 1004 | return error; |
| 1005 | family = so->so_proto->pr_domain->dom_family; |
| 1006 | fd_putfile(SCARG(&bsa, s)); |
| 1007 | |
| 1008 | if (family == AF_LOCAL) |
| 1009 | return EOPNOTSUPP; |
| 1010 | } |
| 1011 | |
| 1012 | switch (SCARG(&bsa, level)) { |
| 1013 | case SOL_SOCKET: |
| 1014 | name = linux_to_bsd_so_sockopt(SCARG(uap, optname)); |
| 1015 | break; |
| 1016 | case IPPROTO_IP: |
| 1017 | name = linux_to_bsd_ip_sockopt(SCARG(uap, optname)); |
| 1018 | break; |
| 1019 | #ifdef INET6 |
| 1020 | case IPPROTO_IPV6: |
| 1021 | name = linux_to_bsd_ipv6_sockopt(SCARG(uap, optname)); |
| 1022 | break; |
| 1023 | #endif |
| 1024 | case IPPROTO_TCP: |
| 1025 | name = linux_to_bsd_tcp_sockopt(SCARG(uap, optname)); |
| 1026 | break; |
| 1027 | case IPPROTO_UDP: |
| 1028 | name = linux_to_bsd_udp_sockopt(SCARG(uap, optname)); |
| 1029 | break; |
| 1030 | default: |
| 1031 | return EINVAL; |
| 1032 | } |
| 1033 | |
| 1034 | if (name == -1) |
| 1035 | return EINVAL; |
| 1036 | SCARG(&bsa, name) = name; |
| 1037 | |
| 1038 | return sys_setsockopt(l, &bsa, retval); |
| 1039 | } |
| 1040 | |
| 1041 | /* |
| 1042 | * getsockopt(2) is very much the same as setsockopt(2) (see above) |
| 1043 | */ |
| 1044 | int |
| 1045 | linux_sys_getsockopt(struct lwp *l, const struct linux_sys_getsockopt_args *uap, register_t *retval) |
| 1046 | { |
| 1047 | /* { |
| 1048 | syscallarg(int) s; |
| 1049 | syscallarg(int) level; |
| 1050 | syscallarg(int) optname; |
| 1051 | syscallarg(void *) optval; |
| 1052 | syscallarg(int *) optlen; |
| 1053 | } */ |
| 1054 | struct sys_getsockopt_args bga; |
| 1055 | int name; |
| 1056 | |
| 1057 | SCARG(&bga, s) = SCARG(uap, s); |
| 1058 | SCARG(&bga, level) = linux_to_bsd_sopt_level(SCARG(uap, level)); |
| 1059 | SCARG(&bga, val) = SCARG(uap, optval); |
| 1060 | SCARG(&bga, avalsize) = (socklen_t *)SCARG(uap, optlen); |
| 1061 | |
| 1062 | switch (SCARG(&bga, level)) { |
| 1063 | case SOL_SOCKET: |
| 1064 | name = linux_to_bsd_so_sockopt(SCARG(uap, optname)); |
| 1065 | break; |
| 1066 | case IPPROTO_IP: |
| 1067 | name = linux_to_bsd_ip_sockopt(SCARG(uap, optname)); |
| 1068 | break; |
| 1069 | #ifdef INET6 |
| 1070 | case IPPROTO_IPV6: |
| 1071 | name = linux_to_bsd_ipv6_sockopt(SCARG(uap, optname)); |
| 1072 | break; |
| 1073 | #endif |
| 1074 | case IPPROTO_TCP: |
| 1075 | name = linux_to_bsd_tcp_sockopt(SCARG(uap, optname)); |
| 1076 | break; |
| 1077 | case IPPROTO_UDP: |
| 1078 | name = linux_to_bsd_udp_sockopt(SCARG(uap, optname)); |
| 1079 | break; |
| 1080 | default: |
| 1081 | return EINVAL; |
| 1082 | } |
| 1083 | |
| 1084 | if (name == -1) |
| 1085 | return EINVAL; |
| 1086 | SCARG(&bga, name) = name; |
| 1087 | |
| 1088 | return sys_getsockopt(l, &bga, retval); |
| 1089 | } |
| 1090 | |
| 1091 | int |
| 1092 | linux_getifname(struct lwp *l, register_t *retval, void *data) |
| 1093 | { |
| 1094 | struct ifnet *ifp; |
| 1095 | struct linux_ifreq ifr; |
| 1096 | int error; |
| 1097 | int s; |
| 1098 | |
| 1099 | error = copyin(data, &ifr, sizeof(ifr)); |
| 1100 | if (error) |
| 1101 | return error; |
| 1102 | |
| 1103 | s = pserialize_read_enter(); |
| 1104 | ifp = if_byindex(ifr.ifr_ifru.ifru_ifindex); |
| 1105 | if (ifp == NULL) { |
| 1106 | pserialize_read_exit(s); |
| 1107 | return ENODEV; |
| 1108 | } |
| 1109 | |
| 1110 | strncpy(ifr.ifr_name, ifp->if_xname, sizeof(ifr.ifr_name)); |
| 1111 | pserialize_read_exit(s); |
| 1112 | |
| 1113 | return copyout(&ifr, data, sizeof(ifr)); |
| 1114 | } |
| 1115 | |
| 1116 | int |
| 1117 | linux_getifconf(struct lwp *l, register_t *retval, void *data) |
| 1118 | { |
| 1119 | struct linux_ifreq ifr, *ifrp = NULL; |
| 1120 | struct linux_ifconf ifc; |
| 1121 | struct ifnet *ifp; |
| 1122 | struct sockaddr *sa; |
| 1123 | struct osockaddr *osa; |
| 1124 | int space = 0, error; |
| 1125 | const int sz = (int)sizeof(ifr); |
| 1126 | bool docopy; |
| 1127 | int s; |
| 1128 | int bound; |
| 1129 | struct psref psref; |
| 1130 | |
| 1131 | error = copyin(data, &ifc, sizeof(ifc)); |
| 1132 | if (error) |
| 1133 | return error; |
| 1134 | |
| 1135 | docopy = ifc.ifc_req != NULL; |
| 1136 | if (docopy) { |
| 1137 | space = ifc.ifc_len; |
| 1138 | ifrp = ifc.ifc_req; |
| 1139 | } |
| 1140 | |
| 1141 | bound = curlwp_bind(); |
| 1142 | s = pserialize_read_enter(); |
| 1143 | IFNET_READER_FOREACH(ifp) { |
| 1144 | struct ifaddr *ifa; |
| 1145 | psref_acquire(&psref, &ifp->if_psref, ifnet_psref_class); |
| 1146 | |
| 1147 | (void)strncpy(ifr.ifr_name, ifp->if_xname, |
| 1148 | sizeof(ifr.ifr_name)); |
| 1149 | if (ifr.ifr_name[sizeof(ifr.ifr_name) - 1] != '\0') { |
| 1150 | error = ENAMETOOLONG; |
| 1151 | goto release_exit; |
| 1152 | } |
| 1153 | |
| 1154 | IFADDR_READER_FOREACH(ifa, ifp) { |
| 1155 | struct psref psref_ifa; |
| 1156 | ifa_acquire(ifa, &psref_ifa); |
| 1157 | pserialize_read_exit(s); |
| 1158 | |
| 1159 | sa = ifa->ifa_addr; |
| 1160 | if (sa->sa_family != AF_INET || |
| 1161 | sa->sa_len > sizeof(*osa)) |
| 1162 | goto next; |
| 1163 | memcpy(&ifr.ifr_addr, sa, sa->sa_len); |
| 1164 | osa = (struct osockaddr *)&ifr.ifr_addr; |
| 1165 | osa->sa_family = sa->sa_family; |
| 1166 | if (space >= sz) { |
| 1167 | error = copyout(&ifr, ifrp, sz); |
| 1168 | if (error != 0) { |
| 1169 | s = pserialize_read_enter(); |
| 1170 | ifa_release(ifa, &psref_ifa); |
| 1171 | goto release_exit; |
| 1172 | } |
| 1173 | ifrp++; |
| 1174 | } |
| 1175 | space -= sz; |
| 1176 | next: |
| 1177 | s = pserialize_read_enter(); |
| 1178 | ifa_release(ifa, &psref_ifa); |
| 1179 | } |
| 1180 | |
| 1181 | psref_release(&psref, &ifp->if_psref, ifnet_psref_class); |
| 1182 | } |
| 1183 | pserialize_read_exit(s); |
| 1184 | curlwp_bindx(bound); |
| 1185 | |
| 1186 | if (docopy) |
| 1187 | ifc.ifc_len -= space; |
| 1188 | else |
| 1189 | ifc.ifc_len = -space; |
| 1190 | |
| 1191 | return copyout(&ifc, data, sizeof(ifc)); |
| 1192 | |
| 1193 | release_exit: |
| 1194 | pserialize_read_exit(s); |
| 1195 | psref_release(&psref, &ifp->if_psref, ifnet_psref_class); |
| 1196 | curlwp_bindx(bound); |
| 1197 | return error; |
| 1198 | } |
| 1199 | |
| 1200 | int |
| 1201 | linux_getifhwaddr(struct lwp *l, register_t *retval, u_int fd, |
| 1202 | void *data) |
| 1203 | { |
| 1204 | /* Not the full structure, just enough to map what we do here */ |
| 1205 | struct linux_ifreq lreq; |
| 1206 | file_t *fp; |
| 1207 | struct ifaddr *ifa; |
| 1208 | struct ifnet *ifp; |
| 1209 | struct sockaddr_dl *sadl; |
| 1210 | int error, found; |
| 1211 | int index, ifnum; |
| 1212 | int s; |
| 1213 | |
| 1214 | /* |
| 1215 | * We can't emulate this ioctl by calling sys_ioctl() to run |
| 1216 | * SIOCGIFCONF, because the user buffer is not of the right |
| 1217 | * type to take those results. We can't use kernel buffers to |
| 1218 | * receive the results, as the implementation of sys_ioctl() |
| 1219 | * and ifconf() [which implements SIOCGIFCONF] use |
| 1220 | * copyin()/copyout() which will fail on kernel addresses. |
| 1221 | * |
| 1222 | * So, we must duplicate code from sys_ioctl() and ifconf(). Ugh. |
| 1223 | */ |
| 1224 | |
| 1225 | if ((fp = fd_getfile(fd)) == NULL) |
| 1226 | return (EBADF); |
| 1227 | |
| 1228 | KERNEL_LOCK(1, NULL); |
| 1229 | |
| 1230 | if ((fp->f_flag & (FREAD | FWRITE)) == 0) { |
| 1231 | error = EBADF; |
| 1232 | goto out; |
| 1233 | } |
| 1234 | |
| 1235 | error = copyin(data, &lreq, sizeof(lreq)); |
| 1236 | if (error) |
| 1237 | goto out; |
| 1238 | lreq.ifr_name[LINUX_IFNAMSIZ-1] = '\0'; /* just in case */ |
| 1239 | |
| 1240 | /* |
| 1241 | * Try real interface name first, then fake "ethX" |
| 1242 | */ |
| 1243 | found = 0; |
| 1244 | s = pserialize_read_enter(); |
| 1245 | IFNET_READER_FOREACH(ifp) { |
| 1246 | if (found) |
| 1247 | break; |
| 1248 | if (strcmp(lreq.ifr_name, ifp->if_xname)) |
| 1249 | /* not this interface */ |
| 1250 | continue; |
| 1251 | |
| 1252 | found=1; |
| 1253 | if (IFADDR_READER_EMPTY(ifp)) { |
| 1254 | pserialize_read_exit(s); |
| 1255 | error = ENODEV; |
| 1256 | goto out; |
| 1257 | } |
| 1258 | IFADDR_READER_FOREACH(ifa, ifp) { |
| 1259 | sadl = satosdl(ifa->ifa_addr); |
| 1260 | /* only return ethernet addresses */ |
| 1261 | /* XXX what about FDDI, etc. ? */ |
| 1262 | if (sadl->sdl_family != AF_LINK || |
| 1263 | sadl->sdl_type != IFT_ETHER) |
| 1264 | continue; |
| 1265 | memcpy(&lreq.ifr_hwaddr.sa_data, CLLADDR(sadl), |
| 1266 | MIN(sadl->sdl_alen, |
| 1267 | sizeof(lreq.ifr_hwaddr.sa_data))); |
| 1268 | lreq.ifr_hwaddr.sa_family = |
| 1269 | sadl->sdl_family; |
| 1270 | pserialize_read_exit(s); |
| 1271 | |
| 1272 | error = copyout(&lreq, data, sizeof(lreq)); |
| 1273 | goto out; |
| 1274 | } |
| 1275 | } |
| 1276 | pserialize_read_exit(s); |
| 1277 | |
| 1278 | if (strncmp(lreq.ifr_name, "eth" , 3) != 0) { |
| 1279 | /* unknown interface, not even an "eth*" name */ |
| 1280 | error = ENODEV; |
| 1281 | goto out; |
| 1282 | } |
| 1283 | |
| 1284 | for (ifnum = 0, index = 3; |
| 1285 | index < LINUX_IFNAMSIZ && lreq.ifr_name[index] != '\0'; |
| 1286 | index++) { |
| 1287 | ifnum *= 10; |
| 1288 | ifnum += lreq.ifr_name[index] - '0'; |
| 1289 | } |
| 1290 | |
| 1291 | error = EINVAL; /* in case we don't find one */ |
| 1292 | s = pserialize_read_enter(); |
| 1293 | IFNET_READER_FOREACH(ifp) { |
| 1294 | memcpy(lreq.ifr_name, ifp->if_xname, |
| 1295 | MIN(LINUX_IFNAMSIZ, IFNAMSIZ)); |
| 1296 | IFADDR_READER_FOREACH(ifa, ifp) { |
| 1297 | sadl = satosdl(ifa->ifa_addr); |
| 1298 | /* only return ethernet addresses */ |
| 1299 | /* XXX what about FDDI, etc. ? */ |
| 1300 | if (sadl->sdl_family != AF_LINK || |
| 1301 | sadl->sdl_type != IFT_ETHER) |
| 1302 | continue; |
| 1303 | if (ifnum--) |
| 1304 | /* not the reqested iface */ |
| 1305 | continue; |
| 1306 | memcpy(&lreq.ifr_hwaddr.sa_data, |
| 1307 | CLLADDR(sadl), |
| 1308 | MIN(sadl->sdl_alen, |
| 1309 | sizeof(lreq.ifr_hwaddr.sa_data))); |
| 1310 | lreq.ifr_hwaddr.sa_family = |
| 1311 | sadl->sdl_family; |
| 1312 | pserialize_read_exit(s); |
| 1313 | |
| 1314 | error = copyout(&lreq, data, sizeof(lreq)); |
| 1315 | goto out; |
| 1316 | } |
| 1317 | } |
| 1318 | pserialize_read_exit(s); |
| 1319 | |
| 1320 | out: |
| 1321 | KERNEL_UNLOCK_ONE(NULL); |
| 1322 | fd_putfile(fd); |
| 1323 | return error; |
| 1324 | } |
| 1325 | |
| 1326 | int |
| 1327 | linux_ioctl_socket(struct lwp *l, const struct linux_sys_ioctl_args *uap, register_t *retval) |
| 1328 | { |
| 1329 | /* { |
| 1330 | syscallarg(int) fd; |
| 1331 | syscallarg(u_long) com; |
| 1332 | syscallarg(void *) data; |
| 1333 | } */ |
| 1334 | u_long com; |
| 1335 | int error = 0, isdev = 0, dosys = 1; |
| 1336 | struct sys_ioctl_args ia; |
| 1337 | file_t *fp; |
| 1338 | struct vnode *vp; |
| 1339 | int (*ioctlf)(file_t *, u_long, void *); |
| 1340 | struct ioctl_pt pt; |
| 1341 | |
| 1342 | if ((fp = fd_getfile(SCARG(uap, fd))) == NULL) |
| 1343 | return (EBADF); |
| 1344 | |
| 1345 | if (fp->f_type == DTYPE_VNODE) { |
| 1346 | vp = (struct vnode *)fp->f_data; |
| 1347 | isdev = vp->v_type == VCHR; |
| 1348 | } |
| 1349 | |
| 1350 | /* |
| 1351 | * Don't try to interpret socket ioctl calls that are done |
| 1352 | * on a device filedescriptor, just pass them through, to |
| 1353 | * emulate Linux behaviour. Use PTIOCLINUX so that the |
| 1354 | * device will only handle these if it's prepared to do |
| 1355 | * so, to avoid unexpected things from happening. |
| 1356 | */ |
| 1357 | if (isdev) { |
| 1358 | dosys = 0; |
| 1359 | ioctlf = fp->f_ops->fo_ioctl; |
| 1360 | pt.com = SCARG(uap, com); |
| 1361 | pt.data = SCARG(uap, data); |
| 1362 | error = ioctlf(fp, PTIOCLINUX, &pt); |
| 1363 | /* |
| 1364 | * XXX hack: if the function returns EJUSTRETURN, |
| 1365 | * it has stuffed a sysctl return value in pt.data. |
| 1366 | */ |
| 1367 | if (error == EJUSTRETURN) { |
| 1368 | retval[0] = (register_t)pt.data; |
| 1369 | error = 0; |
| 1370 | } |
| 1371 | goto out; |
| 1372 | } |
| 1373 | |
| 1374 | com = SCARG(uap, com); |
| 1375 | retval[0] = 0; |
| 1376 | |
| 1377 | switch (com) { |
| 1378 | case LINUX_SIOCGIFNAME: |
| 1379 | error = linux_getifname(l, retval, SCARG(uap, data)); |
| 1380 | dosys = 0; |
| 1381 | break; |
| 1382 | case LINUX_SIOCGIFCONF: |
| 1383 | error = linux_getifconf(l, retval, SCARG(uap, data)); |
| 1384 | dosys = 0; |
| 1385 | break; |
| 1386 | case LINUX_SIOCGIFFLAGS: |
| 1387 | SCARG(&ia, com) = OSIOCGIFFLAGS; |
| 1388 | break; |
| 1389 | case LINUX_SIOCSIFFLAGS: |
| 1390 | SCARG(&ia, com) = OSIOCSIFFLAGS; |
| 1391 | break; |
| 1392 | case LINUX_SIOCGIFADDR: |
| 1393 | SCARG(&ia, com) = OOSIOCGIFADDR; |
| 1394 | break; |
| 1395 | case LINUX_SIOCGIFDSTADDR: |
| 1396 | SCARG(&ia, com) = OOSIOCGIFDSTADDR; |
| 1397 | break; |
| 1398 | case LINUX_SIOCGIFBRDADDR: |
| 1399 | SCARG(&ia, com) = OOSIOCGIFBRDADDR; |
| 1400 | break; |
| 1401 | case LINUX_SIOCGIFNETMASK: |
| 1402 | SCARG(&ia, com) = OOSIOCGIFNETMASK; |
| 1403 | break; |
| 1404 | case LINUX_SIOCGIFMTU: |
| 1405 | SCARG(&ia, com) = OSIOCGIFMTU; |
| 1406 | break; |
| 1407 | case LINUX_SIOCADDMULTI: |
| 1408 | SCARG(&ia, com) = OSIOCADDMULTI; |
| 1409 | break; |
| 1410 | case LINUX_SIOCDELMULTI: |
| 1411 | SCARG(&ia, com) = OSIOCDELMULTI; |
| 1412 | break; |
| 1413 | case LINUX_SIOCGIFHWADDR: |
| 1414 | error = linux_getifhwaddr(l, retval, SCARG(uap, fd), |
| 1415 | SCARG(uap, data)); |
| 1416 | dosys = 0; |
| 1417 | break; |
| 1418 | default: |
| 1419 | error = EINVAL; |
| 1420 | } |
| 1421 | |
| 1422 | out: |
| 1423 | fd_putfile(SCARG(uap, fd)); |
| 1424 | |
| 1425 | if (error ==0 && dosys) { |
| 1426 | SCARG(&ia, fd) = SCARG(uap, fd); |
| 1427 | SCARG(&ia, data) = SCARG(uap, data); |
| 1428 | error = sys_ioctl(curlwp, &ia, retval); |
| 1429 | } |
| 1430 | |
| 1431 | return error; |
| 1432 | } |
| 1433 | |
| 1434 | int |
| 1435 | linux_sys_connect(struct lwp *l, const struct linux_sys_connect_args *uap, register_t *retval) |
| 1436 | { |
| 1437 | /* { |
| 1438 | syscallarg(int) s; |
| 1439 | syscallarg(const struct sockaddr *) name; |
| 1440 | syscallarg(int) namelen; |
| 1441 | } */ |
| 1442 | int error; |
| 1443 | struct sockaddr_big sb; |
| 1444 | |
| 1445 | error = linux_get_sa(l, SCARG(uap, s), &sb, SCARG(uap, name), |
| 1446 | SCARG(uap, namelen)); |
| 1447 | if (error) |
| 1448 | return (error); |
| 1449 | |
| 1450 | error = do_sys_connect(l, SCARG(uap, s), (struct sockaddr *)&sb); |
| 1451 | |
| 1452 | if (error == EISCONN) { |
| 1453 | struct socket *so; |
| 1454 | int state, prflags; |
| 1455 | |
| 1456 | /* fd_getsock() will use the descriptor for us */ |
| 1457 | if (fd_getsock(SCARG(uap, s), &so) != 0) |
| 1458 | return EISCONN; |
| 1459 | |
| 1460 | solock(so); |
| 1461 | state = so->so_state; |
| 1462 | prflags = so->so_proto->pr_flags; |
| 1463 | sounlock(so); |
| 1464 | fd_putfile(SCARG(uap, s)); |
| 1465 | /* |
| 1466 | * We should only let this call succeed once per |
| 1467 | * non-blocking connect; however we don't have |
| 1468 | * a convenient place to keep that state.. |
| 1469 | */ |
| 1470 | if ((state & (SS_ISCONNECTED|SS_NBIO)) == |
| 1471 | (SS_ISCONNECTED|SS_NBIO) && |
| 1472 | (prflags & PR_CONNREQUIRED)) |
| 1473 | return 0; |
| 1474 | } |
| 1475 | |
| 1476 | return (error); |
| 1477 | } |
| 1478 | |
| 1479 | int |
| 1480 | linux_sys_bind(struct lwp *l, const struct linux_sys_bind_args *uap, register_t *retval) |
| 1481 | { |
| 1482 | /* { |
| 1483 | syscallarg(int) s; |
| 1484 | syscallarg(const struct osockaddr *) name; |
| 1485 | syscallarg(int) namelen; |
| 1486 | } */ |
| 1487 | int error; |
| 1488 | struct sockaddr_big sb; |
| 1489 | |
| 1490 | error = linux_get_sa(l, SCARG(uap, s), &sb, SCARG(uap, name), |
| 1491 | SCARG(uap, namelen)); |
| 1492 | if (error) |
| 1493 | return (error); |
| 1494 | |
| 1495 | return do_sys_bind(l, SCARG(uap, s), (struct sockaddr *)&sb); |
| 1496 | } |
| 1497 | |
| 1498 | int |
| 1499 | linux_sys_getsockname(struct lwp *l, const struct linux_sys_getsockname_args *uap, register_t *retval) |
| 1500 | { |
| 1501 | /* { |
| 1502 | syscallarg(int) fdes; |
| 1503 | syscallarg(void *) asa; |
| 1504 | syscallarg(int *) alen; |
| 1505 | } */ |
| 1506 | int error; |
| 1507 | |
| 1508 | if ((error = sys_getsockname(l, (const void *)uap, retval)) != 0) |
| 1509 | return (error); |
| 1510 | |
| 1511 | if ((error = linux_sa_put((struct osockaddr *)SCARG(uap, asa)))) |
| 1512 | return (error); |
| 1513 | |
| 1514 | return (0); |
| 1515 | } |
| 1516 | |
| 1517 | int |
| 1518 | linux_sys_getpeername(struct lwp *l, const struct linux_sys_getpeername_args *uap, register_t *retval) |
| 1519 | { |
| 1520 | /* { |
| 1521 | syscallarg(int) fdes; |
| 1522 | syscallarg(void *) asa; |
| 1523 | syscallarg(int *) alen; |
| 1524 | } */ |
| 1525 | int error; |
| 1526 | |
| 1527 | if ((error = sys_getpeername(l, (const void *)uap, retval)) != 0) |
| 1528 | return (error); |
| 1529 | |
| 1530 | if ((error = linux_sa_put((struct osockaddr *)SCARG(uap, asa)))) |
| 1531 | return (error); |
| 1532 | |
| 1533 | return (0); |
| 1534 | } |
| 1535 | |
| 1536 | /* |
| 1537 | * Copy the osockaddr structure pointed to by name to sb, adjust |
| 1538 | * family and convert to sockaddr. |
| 1539 | */ |
| 1540 | static int |
| 1541 | linux_get_sa(struct lwp *l, int s, struct sockaddr_big *sb, |
| 1542 | const struct osockaddr *name, socklen_t namelen) |
| 1543 | { |
| 1544 | int error, bdom; |
| 1545 | |
| 1546 | if (namelen > UCHAR_MAX || |
| 1547 | namelen <= offsetof(struct sockaddr_big, sb_data)) |
| 1548 | return EINVAL; |
| 1549 | |
| 1550 | error = copyin(name, sb, namelen); |
| 1551 | if (error) |
| 1552 | return error; |
| 1553 | |
| 1554 | bdom = linux_to_bsd_domain(sb->sb_family); |
| 1555 | if (bdom == -1) |
| 1556 | return EINVAL; |
| 1557 | |
| 1558 | /* |
| 1559 | * If the family is unspecified, use address family of the socket. |
| 1560 | * This avoid triggering strict family checks in netinet/in_pcb.c et.al. |
| 1561 | */ |
| 1562 | if (bdom == AF_UNSPEC) { |
| 1563 | struct socket *so; |
| 1564 | |
| 1565 | /* fd_getsock() will use the descriptor for us */ |
| 1566 | if ((error = fd_getsock(s, &so)) != 0) |
| 1567 | return error; |
| 1568 | |
| 1569 | bdom = so->so_proto->pr_domain->dom_family; |
| 1570 | fd_putfile(s); |
| 1571 | } |
| 1572 | |
| 1573 | /* |
| 1574 | * Older Linux IPv6 code uses obsolete RFC2133 struct sockaddr_in6, |
| 1575 | * which lacks the scope id compared with RFC2553 one. If we detect |
| 1576 | * the situation, reject the address and write a message to system log. |
| 1577 | * |
| 1578 | * Still accept addresses for which the scope id is not used. |
| 1579 | */ |
| 1580 | if (bdom == AF_INET6 && |
| 1581 | namelen == sizeof(struct sockaddr_in6) - sizeof(uint32_t)) { |
| 1582 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sb; |
| 1583 | if (!IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr) && |
| 1584 | (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) || |
| 1585 | IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) || |
| 1586 | IN6_IS_ADDR_V4COMPAT(&sin6->sin6_addr) || |
| 1587 | IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || |
| 1588 | IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))) { |
| 1589 | struct proc *p = l->l_proc; |
| 1590 | int uid = l->l_cred ? kauth_cred_geteuid(l->l_cred) : -1; |
| 1591 | |
| 1592 | log(LOG_DEBUG, |
| 1593 | "pid %d (%s), uid %d: obsolete pre-RFC2553 " |
| 1594 | "sockaddr_in6 rejected" , |
| 1595 | p->p_pid, p->p_comm, uid); |
| 1596 | return EINVAL; |
| 1597 | } |
| 1598 | namelen = sizeof(struct sockaddr_in6); |
| 1599 | sin6->sin6_scope_id = 0; |
| 1600 | } |
| 1601 | |
| 1602 | if (bdom == AF_INET) |
| 1603 | namelen = sizeof(struct sockaddr_in); |
| 1604 | |
| 1605 | sb->sb_family = bdom; |
| 1606 | sb->sb_len = namelen; |
| 1607 | ktrkuser("mbsoname" , sb, namelen); |
| 1608 | return 0; |
| 1609 | } |
| 1610 | |
| 1611 | static int |
| 1612 | linux_sa_put(struct osockaddr *osa) |
| 1613 | { |
| 1614 | struct sockaddr sa; |
| 1615 | struct osockaddr *kosa; |
| 1616 | int error, bdom, len; |
| 1617 | |
| 1618 | /* |
| 1619 | * Only read/write the sockaddr family and length part, the rest is |
| 1620 | * not changed. |
| 1621 | */ |
| 1622 | len = sizeof(sa.sa_len) + sizeof(sa.sa_family); |
| 1623 | |
| 1624 | error = copyin(osa, &sa, len); |
| 1625 | if (error) |
| 1626 | return (error); |
| 1627 | |
| 1628 | bdom = bsd_to_linux_domain(sa.sa_family); |
| 1629 | if (bdom == -1) |
| 1630 | return (EINVAL); |
| 1631 | |
| 1632 | /* Note: we convert from sockaddr to osockaddr here, too */ |
| 1633 | kosa = (struct osockaddr *) &sa; |
| 1634 | kosa->sa_family = bdom; |
| 1635 | error = copyout(kosa, osa, len); |
| 1636 | if (error) |
| 1637 | return (error); |
| 1638 | |
| 1639 | return (0); |
| 1640 | } |
| 1641 | |
| 1642 | #ifndef __amd64__ |
| 1643 | int |
| 1644 | linux_sys_recv(struct lwp *l, const struct linux_sys_recv_args *uap, register_t *retval) |
| 1645 | { |
| 1646 | /* { |
| 1647 | syscallarg(int) s; |
| 1648 | syscallarg(void *) buf; |
| 1649 | syscallarg(int) len; |
| 1650 | syscallarg(int) flags; |
| 1651 | } */ |
| 1652 | struct sys_recvfrom_args bra; |
| 1653 | |
| 1654 | |
| 1655 | SCARG(&bra, s) = SCARG(uap, s); |
| 1656 | SCARG(&bra, buf) = SCARG(uap, buf); |
| 1657 | SCARG(&bra, len) = (size_t) SCARG(uap, len); |
| 1658 | SCARG(&bra, flags) = SCARG(uap, flags); |
| 1659 | SCARG(&bra, from) = NULL; |
| 1660 | SCARG(&bra, fromlenaddr) = NULL; |
| 1661 | |
| 1662 | return (sys_recvfrom(l, &bra, retval)); |
| 1663 | } |
| 1664 | |
| 1665 | int |
| 1666 | linux_sys_send(struct lwp *l, const struct linux_sys_send_args *uap, register_t *retval) |
| 1667 | { |
| 1668 | /* { |
| 1669 | syscallarg(int) s; |
| 1670 | syscallarg(void *) buf; |
| 1671 | syscallarg(int) len; |
| 1672 | syscallarg(int) flags; |
| 1673 | } */ |
| 1674 | struct sys_sendto_args bsa; |
| 1675 | |
| 1676 | SCARG(&bsa, s) = SCARG(uap, s); |
| 1677 | SCARG(&bsa, buf) = SCARG(uap, buf); |
| 1678 | SCARG(&bsa, len) = SCARG(uap, len); |
| 1679 | SCARG(&bsa, flags) = SCARG(uap, flags); |
| 1680 | SCARG(&bsa, to) = NULL; |
| 1681 | SCARG(&bsa, tolen) = 0; |
| 1682 | |
| 1683 | return (sys_sendto(l, &bsa, retval)); |
| 1684 | } |
| 1685 | #endif |
| 1686 | |
| 1687 | int |
| 1688 | linux_sys_accept(struct lwp *l, const struct linux_sys_accept_args *uap, register_t *retval) |
| 1689 | { |
| 1690 | /* { |
| 1691 | syscallarg(int) s; |
| 1692 | syscallarg(struct osockaddr *) name; |
| 1693 | syscallarg(int *) anamelen; |
| 1694 | } */ |
| 1695 | int error; |
| 1696 | struct sys_accept_args baa; |
| 1697 | |
| 1698 | SCARG(&baa, s) = SCARG(uap, s); |
| 1699 | SCARG(&baa, name) = (struct sockaddr *) SCARG(uap, name); |
| 1700 | SCARG(&baa, anamelen) = (unsigned int *) SCARG(uap, anamelen); |
| 1701 | |
| 1702 | if ((error = sys_accept(l, &baa, retval))) |
| 1703 | return (error); |
| 1704 | |
| 1705 | if (SCARG(uap, name) && (error = linux_sa_put(SCARG(uap, name)))) |
| 1706 | return (error); |
| 1707 | |
| 1708 | return (0); |
| 1709 | } |
| 1710 | |