uipc_syscalls_43.c revision 1.40
1 /* $NetBSD: uipc_syscalls_43.c,v 1.40 2008/01/14 21:38:55 martin Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)uipc_syscalls.c 8.4 (Berkeley) 2/21/94 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: uipc_syscalls_43.c,v 1.40 2008/01/14 21:38:55 martin Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/filedesc.h> 40 #include <sys/kernel.h> 41 #include <sys/proc.h> 42 #include <sys/file.h> 43 #include <sys/socket.h> 44 #include <sys/socketvar.h> 45 #include <sys/stat.h> 46 #include <sys/ioctl.h> 47 #include <sys/fcntl.h> 48 #include <sys/malloc.h> 49 #include <sys/syslog.h> 50 #include <sys/unistd.h> 51 #include <sys/resourcevar.h> 52 #include <sys/mbuf.h> /* for MLEN */ 53 #include <sys/protosw.h> 54 55 #include <sys/mount.h> 56 #include <sys/syscallargs.h> 57 58 #include <net/if.h> 59 #include <net/bpf.h> 60 #include <net/route.h> 61 #include <netinet/in.h> 62 #include <netinet/in_systm.h> 63 #include <netinet/ip.h> 64 #include <net/if_gre.h> 65 #include <net/if_atm.h> 66 #include <net/if_tap.h> 67 #include <net80211/ieee80211_ioctl.h> 68 #include <netinet6/in6_var.h> 69 #include <netinet6/nd6.h> 70 #include <compat/sys/socket.h> 71 #include <compat/sys/sockio.h> 72 73 #include <compat/common/compat_util.h> 74 75 #include <uvm/uvm_extern.h> 76 77 /* 78 * Following 4.3 syscalls were not versioned, even through they should 79 * have been: 80 * connect(2), bind(2), sendto(2) 81 */ 82 83 static int compat_43_sa_put(void *); 84 85 int 86 compat_43_sys_accept(struct lwp *l, const struct compat_43_sys_accept_args *uap, register_t *retval) 87 { 88 /* { 89 syscallarg(int) s; 90 syscallarg(void *) name; 91 syscallarg(int *) anamelen; 92 } */ 93 int error; 94 95 if ((error = sys_accept(l, (const void *)uap, retval)) != 0) 96 return error; 97 98 if (SCARG(uap, name) 99 && (error = compat_43_sa_put(SCARG(uap, name)))) 100 return (error); 101 102 return 0; 103 } 104 105 int 106 compat_43_sys_getpeername(struct lwp *l, const struct compat_43_sys_getpeername_args *uap, register_t *retval) 107 { 108 /* { 109 syscallarg(int) fdes; 110 syscallarg(void *) asa; 111 syscallarg(int *) alen; 112 } */ 113 114 int error; 115 116 if ((error = sys_getpeername(l, (const void *)uap, retval)) != 0) 117 return error; 118 119 if ((error = compat_43_sa_put(SCARG(uap, asa)))) 120 return (error); 121 122 return 0; 123 } 124 125 int 126 compat_43_sys_getsockname(struct lwp *l, const struct compat_43_sys_getsockname_args *uap, register_t *retval) 127 { 128 /* { 129 syscallarg(int) fdes; 130 syscallarg(void *) asa; 131 syscallarg(int *) alen; 132 } */ 133 int error; 134 135 if ((error = sys_getsockname(l, (const void *)uap, retval)) != 0) 136 return error; 137 138 if ((error = compat_43_sa_put(SCARG(uap, asa)))) 139 return (error); 140 141 return 0; 142 } 143 144 int 145 compat_43_sys_recv(struct lwp *l, const struct compat_43_sys_recv_args *uap, register_t *retval) 146 { 147 /* { 148 syscallarg(int) s; 149 syscallarg(void *) buf; 150 syscallarg(int) len; 151 syscallarg(int) flags; 152 } */ 153 struct sys_recvfrom_args bra; 154 155 SCARG(&bra, s) = SCARG(uap, s); 156 SCARG(&bra, buf) = SCARG(uap, buf); 157 SCARG(&bra, len) = (size_t) SCARG(uap, len); 158 SCARG(&bra, flags) = SCARG(uap, flags); 159 SCARG(&bra, from) = NULL; 160 SCARG(&bra, fromlenaddr) = NULL; 161 162 return (sys_recvfrom(l, &bra, retval)); 163 } 164 165 int 166 compat_43_sys_recvfrom(struct lwp *l, const struct compat_43_sys_recvfrom_args *uap, register_t *retval) 167 { 168 /* { 169 syscallarg(int) s; 170 syscallarg(void *) buf; 171 syscallarg(size_t) len; 172 syscallarg(int) flags; 173 syscallarg(void *) from; 174 syscallarg(int *) fromlenaddr; 175 } */ 176 int error; 177 178 if ((error = sys_recvfrom(l, (const void *)uap, retval))) 179 return (error); 180 181 if (SCARG(uap, from) && (error = compat_43_sa_put(SCARG(uap, from)))) 182 return (error); 183 184 return (0); 185 } 186 187 /* 188 * Old recvmsg. Arrange necessary structures, calls generic code and 189 * adjusts results accordingly. 190 */ 191 int 192 compat_43_sys_recvmsg(struct lwp *l, const struct compat_43_sys_recvmsg_args *uap, register_t *retval) 193 { 194 /* { 195 syscallarg(int) s; 196 syscallarg(struct omsghdr *) msg; 197 syscallarg(int) flags; 198 } */ 199 struct omsghdr omsg; 200 struct msghdr msg; 201 struct mbuf *from, *control; 202 int error; 203 204 error = copyin(SCARG(uap, msg), &omsg, sizeof (struct omsghdr)); 205 if (error) 206 return (error); 207 208 if (omsg.msg_accrights == NULL) 209 omsg.msg_accrightslen = 0; 210 /* it was this way in 4.4BSD */ 211 if (omsg.msg_accrightslen > MLEN) 212 return EINVAL; 213 214 msg.msg_name = omsg.msg_name; 215 msg.msg_namelen = omsg.msg_namelen; 216 msg.msg_iovlen = omsg.msg_iovlen; 217 msg.msg_iov = omsg.msg_iov; 218 msg.msg_flags = (SCARG(uap, flags) & MSG_USERFLAGS) | MSG_IOVUSRSPACE; 219 220 error = do_sys_recvmsg(l, SCARG(uap, s), &msg, &from, 221 omsg.msg_accrights != NULL ? &control : NULL, retval); 222 if (error != 0) 223 return error; 224 225 /* 226 * If there is any control information and it's SCM_RIGHTS, 227 * pass it back to the program. 228 * XXX: maybe there can be more than one chunk of control data? 229 */ 230 if (omsg.msg_accrights && control != NULL) { 231 struct cmsghdr *cmsg = mtod(control, void *); 232 233 if (cmsg->cmsg_level == SOL_SOCKET 234 && cmsg->cmsg_type == SCM_RIGHTS 235 && cmsg->cmsg_len < omsg.msg_accrightslen 236 && copyout(CMSG_DATA(cmsg), omsg.msg_accrights, 237 cmsg->cmsg_len) == 0) { 238 omsg.msg_accrightslen = cmsg->cmsg_len; 239 free_control_mbuf(l, control, control->m_next); 240 } else { 241 omsg.msg_accrightslen = 0; 242 free_control_mbuf(l, control, control); 243 } 244 } else 245 omsg.msg_accrightslen = 0; 246 247 if (from != NULL) 248 /* convert from sockaddr sa_family to osockaddr one here */ 249 mtod(from, struct osockaddr *)->sa_family = 250 mtod(from, struct sockaddr *)->sa_family; 251 252 error = copyout_sockname(omsg.msg_name, &omsg.msg_namelen, 0, from); 253 if (from != NULL) 254 m_free(from); 255 256 if (error != 0) 257 error = copyout(&omsg, SCARG(uap, msg), sizeof(omsg)); 258 259 return error; 260 } 261 262 int 263 compat_43_sys_send(struct lwp *l, const struct compat_43_sys_send_args *uap, register_t *retval) 264 { 265 /* { 266 syscallarg(int) s; 267 syscallarg(void *) buf; 268 syscallarg(int) len; 269 syscallarg(int) flags; 270 } */ 271 struct sys_sendto_args bsa; 272 273 SCARG(&bsa, s) = SCARG(uap, s); 274 SCARG(&bsa, buf) = SCARG(uap, buf); 275 SCARG(&bsa, len) = SCARG(uap, len); 276 SCARG(&bsa, flags) = SCARG(uap, flags); 277 SCARG(&bsa, to) = NULL; 278 SCARG(&bsa, tolen) = 0; 279 280 return (sys_sendto(l, &bsa, retval)); 281 } 282 283 int 284 compat43_set_accrights(struct msghdr *msg, void *accrights, int accrightslen) 285 { 286 struct cmsghdr *cmsg; 287 int error; 288 struct mbuf *ctl; 289 u_int clen; 290 291 if (accrights == NULL || accrightslen == 0) { 292 msg->msg_control = NULL; 293 msg->msg_controllen = 0; 294 return 0; 295 } 296 297 clen = CMSG_SPACE(accrightslen); 298 /* it was (almost) this way in 4.4BSD */ 299 if (accrightslen < 0 || clen > MLEN) 300 return EINVAL; 301 302 ctl = m_get(M_WAIT, MT_CONTROL); 303 ctl->m_len = clen; 304 cmsg = mtod(ctl, void *); 305 cmsg->cmsg_len = CMSG_SPACE(accrightslen); 306 cmsg->cmsg_level = SOL_SOCKET; 307 cmsg->cmsg_type = SCM_RIGHTS; 308 309 error = copyin(accrights, CMSG_DATA(cmsg), accrightslen); 310 if (error) { 311 m_free(ctl); 312 return error; 313 } 314 315 msg->msg_control = ctl; 316 msg->msg_controllen = clen; 317 msg->msg_flags |= MSG_CONTROLMBUF; 318 return 0; 319 } 320 321 /* 322 * Old sendmsg. Arrange necessary structures, call generic code and 323 * adjust the results accordingly for old code. 324 */ 325 int 326 compat_43_sys_sendmsg(struct lwp *l, const struct compat_43_sys_sendmsg_args *uap, register_t *retval) 327 { 328 /* { 329 syscallarg(int) s; 330 syscallarg(void *) msg; 331 syscallarg(int) flags; 332 } */ 333 struct omsghdr omsg; 334 struct msghdr msg; 335 int error; 336 struct mbuf *nam; 337 struct osockaddr *osa; 338 struct sockaddr *sa; 339 340 error = copyin(SCARG(uap, msg), &omsg, sizeof (struct omsghdr)); 341 if (error != 0) 342 return (error); 343 344 msg.msg_iovlen = omsg.msg_iovlen; 345 msg.msg_iov = omsg.msg_iov; 346 347 error = sockargs(&nam, omsg.msg_name, omsg.msg_namelen, MT_SONAME); 348 if (error != 0) 349 return (error); 350 351 sa = mtod(nam, void *); 352 osa = mtod(nam, void *); 353 sa->sa_family = osa->sa_family; 354 sa->sa_len = omsg.msg_namelen; 355 356 msg.msg_flags = MSG_IOVUSRSPACE | MSG_NAMEMBUF; 357 358 msg.msg_name = nam; 359 msg.msg_namelen = omsg.msg_namelen; 360 error = compat43_set_accrights(&msg, omsg.msg_accrights, 361 omsg.msg_accrightslen); 362 if (error != 0) 363 goto bad; 364 365 return do_sys_sendmsg(l, SCARG(uap, s), &msg, SCARG(uap, flags), retval); 366 367 bad: 368 if (nam != NULL) 369 m_free(nam); 370 371 return (error); 372 } 373 374 static int 375 compat_43_sa_put(void *from) 376 { 377 struct osockaddr *osa = (struct osockaddr *) from; 378 struct sockaddr sa; 379 struct osockaddr *kosa; 380 int error, len; 381 382 /* 383 * Only read/write the sockaddr family and length, the rest is 384 * not changed. 385 */ 386 len = sizeof(sa.sa_len) + sizeof(sa.sa_family); 387 388 error = copyin((void *) osa, (void *) &sa, len); 389 if (error) 390 return (error); 391 392 /* Note: we convert from sockaddr sa_family to osockaddr one here */ 393 kosa = (struct osockaddr *) &sa; 394 kosa->sa_family = sa.sa_family; 395 error = copyout(kosa, osa, len); 396 if (error) 397 return (error); 398 399 return (0); 400 } 401 402 u_long 403 compat_cvtcmd(u_long cmd) 404 { 405 u_long ncmd; 406 407 if (IOCPARM_LEN(cmd) != sizeof(struct oifreq)) 408 return cmd; 409 410 ncmd = ((cmd) & ~(IOCPARM_MASK << IOCPARM_SHIFT)) | 411 (sizeof(struct ifreq) << IOCPARM_SHIFT); 412 413 switch (ncmd) { 414 case BIOCGETIF: 415 case BIOCSETIF: 416 case GREDSOCK: 417 case GREGADDRD: 418 case GREGADDRS: 419 case GREGPROTO: 420 case GRESADDRD: 421 case GRESADDRS: 422 case GRESPROTO: 423 case GRESSOCK: 424 case OSIOCG80211STATS: 425 case OSIOCG80211ZSTATS: 426 case SIOCADDMULTI: 427 case SIOCDELMULTI: 428 case SIOCDIFADDR: 429 case SIOCDIFADDR_IN6: 430 case SIOCDIFPHYADDR: 431 case SIOCGDEFIFACE_IN6: 432 case SIOCG80211NWID: 433 case SIOCG80211STATS: 434 case SIOCG80211ZSTATS: 435 case SIOCGIFADDR: 436 case SIOCGIFADDR_IN6: 437 case SIOCGIFAFLAG_IN6: 438 case SIOCGIFALIFETIME_IN6: 439 case SIOCGIFBRDADDR: 440 case SIOCGIFDLT: 441 case SIOCGIFDSTADDR: 442 case SIOCGIFDSTADDR_IN6: 443 case SIOCGIFFLAGS: 444 case SIOCGIFGENERIC: 445 case SIOCGIFMETRIC: 446 case SIOCGIFMTU: 447 case SIOCGIFNETMASK: 448 case SIOCGIFNETMASK_IN6: 449 case SIOCGIFPDSTADDR: 450 case SIOCGIFPDSTADDR_IN6: 451 case SIOCGIFPSRCADDR: 452 case SIOCGIFPSRCADDR_IN6: 453 case SIOCGIFSTAT_ICMP6: 454 case SIOCGIFSTAT_IN6: 455 case SIOCGPVCSIF: 456 case SIOCGVH: 457 case SIOCIFCREATE: 458 case SIOCIFDESTROY: 459 case SIOCS80211NWID: 460 case SIOCSDEFIFACE_IN6: 461 case SIOCSIFADDR: 462 case SIOCSIFADDR_IN6: 463 case SIOCSIFBRDADDR: 464 case SIOCSIFDSTADDR: 465 case SIOCSIFDSTADDR_IN6: 466 case SIOCSIFFLAGS: 467 case SIOCSIFGENERIC: 468 case SIOCSIFMEDIA: 469 case SIOCSIFMETRIC: 470 case SIOCSIFMTU: 471 case SIOCSIFNETMASK: 472 case SIOCSIFNETMASK_IN6: 473 case SIOCSNDFLUSH_IN6: 474 case SIOCSPFXFLUSH_IN6: 475 case SIOCSPVCSIF: 476 case SIOCSRTRFLUSH_IN6: 477 case SIOCSVH: 478 case TAPGIFNAME: 479 return ncmd; 480 } 481 return cmd; 482 } 483 484 int 485 compat_ifioctl(struct socket *so, u_long ocmd, u_long cmd, void *data, 486 struct lwp *l) 487 { 488 int error; 489 struct ifreq *ifr = data; 490 struct ifnet *ifp = ifunit(ifr->ifr_name); 491 struct sockaddr *sa; 492 493 if (ifp == NULL) 494 return ENXIO; 495 496 switch (ocmd) { 497 case OSIOCSIFADDR: 498 case OSIOCSIFDSTADDR: 499 case OSIOCSIFBRDADDR: 500 case OSIOCSIFNETMASK: 501 sa = &ifr->ifr_addr; 502 #if BYTE_ORDER != BIG_ENDIAN 503 if (sa->sa_family == 0 && sa->sa_len < 16) { 504 sa->sa_family = sa->sa_len; 505 sa->sa_len = 16; 506 } 507 #else 508 if (sa->sa_len == 0) 509 sa->sa_len = 16; 510 #endif 511 break; 512 513 case OOSIOCGIFADDR: 514 cmd = SIOCGIFADDR; 515 break; 516 517 case OOSIOCGIFDSTADDR: 518 cmd = SIOCGIFDSTADDR; 519 break; 520 521 case OOSIOCGIFBRDADDR: 522 cmd = SIOCGIFBRDADDR; 523 break; 524 525 case OOSIOCGIFNETMASK: 526 cmd = SIOCGIFNETMASK; 527 } 528 529 error = (*so->so_proto->pr_usrreq)(so, PRU_CONTROL, 530 (struct mbuf *)cmd, (struct mbuf *)ifr, (struct mbuf *)ifp, l); 531 532 switch (ocmd) { 533 case OOSIOCGIFADDR: 534 case OOSIOCGIFDSTADDR: 535 case OOSIOCGIFBRDADDR: 536 case OOSIOCGIFNETMASK: 537 *(u_int16_t *)&ifr->ifr_addr = 538 ((struct sockaddr *)&ifr->ifr_addr)->sa_family; 539 } 540 return error; 541 } 542
Indexes created Mon Sep 29 21:09:56 GMT 2025