mount_nfs.c revision 1.52
1 /* $NetBSD: mount_nfs.c,v 1.52 2006/10/16 03:37:42 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 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 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 __COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\n\ 38 The Regents of the University of California. All rights reserved.\n"); 39 #endif /* not lint */ 40 41 #ifndef lint 42 #if 0 43 static char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95"; 44 #else 45 __RCSID("$NetBSD: mount_nfs.c,v 1.52 2006/10/16 03:37:42 christos Exp $"); 46 #endif 47 #endif /* not lint */ 48 49 #include <sys/param.h> 50 #include <sys/mount.h> 51 #include <sys/socket.h> 52 #include <sys/stat.h> 53 #include <syslog.h> 54 55 #ifdef ISO 56 #include <netiso/iso.h> 57 #endif 58 59 #include <nfs/rpcv2.h> 60 #include <nfs/nfsproto.h> 61 #include <nfs/nfs.h> 62 #include <nfs/nqnfs.h> 63 #include <nfs/nfsmount.h> 64 65 #include <arpa/inet.h> 66 67 #include <ctype.h> 68 #include <err.h> 69 #include <errno.h> 70 #include <fcntl.h> 71 #include <netdb.h> 72 #include <signal.h> 73 #include <stdio.h> 74 #include <stdlib.h> 75 #include <string.h> 76 #include <unistd.h> 77 #include <util.h> 78 79 #include <mntopts.h> 80 81 #include "mount_nfs.h" 82 83 #define ALTF_BG 0x00000001 84 #define ALTF_CONN 0x00000002 85 #define ALTF_DUMBTIMR 0x00000004 86 #define ALTF_INTR 0x00000008 87 #define ALTF_KERB 0x00000010 88 #define ALTF_NFSV3 0x00000020 89 #define ALTF_RDIRPLUS 0x00000040 90 #define ALTF_MNTUDP 0x00000080 91 #define ALTF_NORESPORT 0x00000100 92 #define ALTF_SEQPACKET 0x00000200 93 #define ALTF_NQNFS 0x00000400 94 #define ALTF_SOFT 0x00000800 95 #define ALTF_TCP 0x00001000 96 #define ALTF_NFSV2 0x00002000 97 #define ALTF_PORT 0x00004000 98 #define ALTF_RSIZE 0x00008000 99 #define ALTF_WSIZE 0x00010000 100 #define ALTF_RDIRSIZE 0x00020000 101 #define ALTF_MAXGRPS 0x00040000 102 #define ALTF_LEASETERM 0x00080000 103 #define ALTF_READAHEAD 0x00100000 104 #define ALTF_DEADTHRESH 0x00200000 105 #define ALTF_TIMEO 0x00400000 106 #define ALTF_RETRANS 0x00800000 107 108 static const struct mntopt mopts[] = { 109 MOPT_STDOPTS, 110 MOPT_FORCE, 111 MOPT_UPDATE, 112 MOPT_GETARGS, 113 { "bg", 0, ALTF_BG, 1 }, 114 { "conn", 0, ALTF_CONN, 1 }, 115 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 116 { "intr", 0, ALTF_INTR, 1 }, 117 { "nfsv3", 0, ALTF_NFSV3, 1 }, 118 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 119 { "mntudp", 0, ALTF_MNTUDP, 1 }, 120 { "noresport", 0, ALTF_NORESPORT, 1 }, 121 #ifdef ISO 122 { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 123 #endif 124 { "nqnfs", 0, ALTF_NQNFS, 1 }, 125 { "soft", 0, ALTF_SOFT, 1 }, 126 { "tcp", 0, ALTF_TCP, 1 }, 127 { "nfsv2", 0, ALTF_NFSV2, 1 }, 128 { "port", 0, ALTF_PORT, 1 }, 129 { "rsize", 0, ALTF_RSIZE, 1 }, 130 { "wsize", 0, ALTF_WSIZE, 1 }, 131 { "rdirsize", 0, ALTF_RDIRSIZE, 1 }, 132 { "maxgrps", 0, ALTF_MAXGRPS, 1 }, 133 { "leaseterm", 0, ALTF_LEASETERM, 1 }, 134 { "readahead", 0, ALTF_READAHEAD, 1 }, 135 { "deadthresh", 0, ALTF_DEADTHRESH, 1 }, 136 { "timeo", 0, ALTF_TIMEO, 1 }, 137 MOPT_NULL, 138 139 }; 140 141 struct nfs_args nfsdefargs = { 142 NFS_ARGSVERSION, 143 (struct sockaddr *)0, 144 sizeof (struct sockaddr_in), 145 SOCK_DGRAM, 146 0, 147 (u_char *)0, 148 0, 149 NFSMNT_NFSV3|NFSMNT_NOCONN|NFSMNT_RESVPORT, 150 NFS_WSIZE, 151 NFS_RSIZE, 152 NFS_READDIRSIZE, 153 10, 154 NFS_RETRANS, 155 NFS_MAXGRPS, 156 NFS_DEFRAHEAD, 157 NQ_DEFLEASE, 158 NQ_DEADTHRESH, 159 (char *)0, 160 }; 161 162 int retrycnt = 0; 163 int opflags = 0; 164 int nfsproto = IPPROTO_UDP; 165 int force2 = 0; 166 int force3 = 0; 167 int mnttcp_ok = 1; 168 int port = 0; 169 170 static void shownfsargs(const struct nfs_args *); 171 #ifdef ISO 172 static struct iso_addr *iso_addr(const char *); 173 #endif 174 int mount_nfs(int argc, char **argv); 175 /* void set_rpc_maxgrouplist(int); */ 176 static void usage(void); 177 178 #ifndef MOUNT_NOMAIN 179 int 180 main(int argc, char **argv) 181 { 182 return mount_nfs(argc, argv); 183 } 184 #endif 185 186 int 187 mount_nfs(int argc, char *argv[]) 188 { 189 int c, retval; 190 struct nfs_args *nfsargsp; 191 struct nfs_args nfsargs; 192 struct nfsd_cargs ncd; 193 struct sockaddr_storage sa; 194 int mntflags, altflags, i, nfssvc_flag, num; 195 char name[MAXPATHLEN], *p, *spec; 196 mntoptparse_t mp; 197 retrycnt = DEF_RETRY; 198 199 mntflags = 0; 200 altflags = 0; 201 nfsargs = nfsdefargs; 202 nfsargsp = &nfsargs; 203 while ((c = getopt(argc, argv, 204 "23a:bcCdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:UX")) != -1) 205 switch (c) { 206 case '3': 207 if (force2) 208 errx(1, "-2 and -3 are mutually exclusive"); 209 force3 = 1; 210 break; 211 case '2': 212 if (force3) 213 errx(1, "-2 and -3 are mutually exclusive"); 214 force2 = 1; 215 nfsargsp->flags &= ~NFSMNT_NFSV3; 216 break; 217 case 'a': 218 num = strtol(optarg, &p, 10); 219 if (*p || num < 0) 220 errx(1, "illegal -a value -- %s", optarg); 221 nfsargsp->readahead = num; 222 nfsargsp->flags |= NFSMNT_READAHEAD; 223 break; 224 case 'b': 225 opflags |= BGRND; 226 break; 227 case 'c': 228 nfsargsp->flags |= NFSMNT_NOCONN; 229 break; 230 case 'C': 231 nfsargsp->flags &= ~NFSMNT_NOCONN; 232 break; 233 case 'D': 234 num = strtol(optarg, &p, 10); 235 if (*p || num <= 0) 236 errx(1, "illegal -D value -- %s", optarg); 237 nfsargsp->deadthresh = num; 238 nfsargsp->flags |= NFSMNT_DEADTHRESH; 239 break; 240 case 'd': 241 nfsargsp->flags |= NFSMNT_DUMBTIMR; 242 break; 243 #if 0 /* XXXX */ 244 case 'g': 245 num = strtol(optarg, &p, 10); 246 if (*p || num <= 0) 247 errx(1, "illegal -g value -- %s", optarg); 248 set_rpc_maxgrouplist(num); 249 nfsargsp->maxgrouplist = num; 250 nfsargsp->flags |= NFSMNT_MAXGRPS; 251 break; 252 #endif 253 case 'I': 254 num = strtol(optarg, &p, 10); 255 if (*p || num <= 0) 256 errx(1, "illegal -I value -- %s", optarg); 257 nfsargsp->readdirsize = num; 258 nfsargsp->flags |= NFSMNT_READDIRSIZE; 259 break; 260 case 'i': 261 nfsargsp->flags |= NFSMNT_INT; 262 break; 263 case 'L': 264 num = strtol(optarg, &p, 10); 265 if (*p || num < 2) 266 errx(1, "illegal -L value -- %s", optarg); 267 nfsargsp->leaseterm = num; 268 nfsargsp->flags |= NFSMNT_LEASETERM; 269 break; 270 case 'l': 271 nfsargsp->flags |= NFSMNT_RDIRPLUS; 272 break; 273 case 'o': 274 mp = getmntopts(optarg, mopts, &mntflags, &altflags); 275 if (mp == NULL) 276 err(1, "getmntopts"); 277 if (altflags & ALTF_BG) 278 opflags |= BGRND; 279 if (altflags & ALTF_CONN) 280 nfsargsp->flags &= ~NFSMNT_NOCONN; 281 if (altflags & ALTF_DUMBTIMR) 282 nfsargsp->flags |= NFSMNT_DUMBTIMR; 283 if (altflags & ALTF_INTR) 284 nfsargsp->flags |= NFSMNT_INT; 285 if (altflags & ALTF_NFSV3) { 286 if (force2) 287 errx(1, "conflicting version options"); 288 force3 = 1; 289 } 290 if (altflags & ALTF_NFSV2) { 291 if (force3) 292 errx(1, "conflicting version options"); 293 force2 = 1; 294 nfsargsp->flags &= ~NFSMNT_NFSV3; 295 } 296 if (altflags & ALTF_RDIRPLUS) 297 nfsargsp->flags |= NFSMNT_RDIRPLUS; 298 if (altflags & ALTF_MNTUDP) 299 mnttcp_ok = 0; 300 if (altflags & ALTF_NORESPORT) 301 nfsargsp->flags &= ~NFSMNT_RESVPORT; 302 #ifdef ISO 303 if (altflags & ALTF_SEQPACKET) 304 nfsargsp->sotype = SOCK_SEQPACKET; 305 #endif 306 if (altflags & ALTF_NQNFS) { 307 if (force2) 308 errx(1, "nqnfs only available with v3"); 309 force3 = 1; 310 nfsargsp->flags |= NFSMNT_NQNFS; 311 } 312 if (altflags & ALTF_SOFT) 313 nfsargsp->flags |= NFSMNT_SOFT; 314 if (altflags & ALTF_TCP) { 315 nfsargsp->sotype = SOCK_STREAM; 316 nfsproto = IPPROTO_TCP; 317 } 318 if (altflags & ALTF_PORT) { 319 port = getmntoptnum(mp, "port"); 320 } 321 if (altflags & ALTF_RSIZE) { 322 nfsargsp->rsize = 323 (int)getmntoptnum(mp, "rsize"); 324 nfsargsp->flags |= NFSMNT_RSIZE; 325 } 326 if (altflags & ALTF_WSIZE) { 327 nfsargsp->wsize = 328 (int)getmntoptnum(mp, "wsize"); 329 nfsargsp->flags |= NFSMNT_WSIZE; 330 } 331 if (altflags & ALTF_RDIRSIZE) { 332 nfsargsp->rsize = 333 (int)getmntoptnum(mp, "rdirsize"); 334 nfsargsp->flags |= NFSMNT_READDIRSIZE; 335 } 336 #if 0 337 if (altflags & ALTF_MAXGRPS) { 338 set_rpc_maxgrouplist(num); 339 nfsargsp->maxgrouplist = 340 (int)getmntoptnum(mp, "maxgrps"); 341 nfsargsp->flags |= NFSMNT_MAXGRPS; 342 } 343 #endif 344 if (altflags & ALTF_LEASETERM) { 345 nfsargsp->leaseterm = 346 (int)getmntoptnum(mp, "leaseterm"); 347 nfsargsp->flags |= NFSMNT_LEASETERM; 348 } 349 if (altflags & ALTF_READAHEAD) { 350 nfsargsp->readahead = 351 (int)getmntoptnum(mp, "readahead"); 352 nfsargsp->flags |= NFSMNT_READAHEAD; 353 } 354 if (altflags & ALTF_DEADTHRESH) { 355 nfsargsp->deadthresh = 356 (int)getmntoptnum(mp, "deadthresh"); 357 nfsargsp->flags |= NFSMNT_DEADTHRESH; 358 } 359 if (altflags & ALTF_TIMEO) { 360 nfsargsp->timeo = 361 (int)getmntoptnum(mp, "timeo"); 362 nfsargsp->flags |= NFSMNT_TIMEO; 363 } 364 if (altflags & ALTF_RETRANS) { 365 nfsargsp->retrans = 366 (int)getmntoptnum(mp, "retrans"); 367 nfsargsp->flags |= NFSMNT_RETRANS; 368 } 369 altflags = 0; 370 freemntopts(mp); 371 break; 372 case 'P': 373 nfsargsp->flags |= NFSMNT_RESVPORT; 374 break; 375 case 'p': 376 nfsargsp->flags &= ~NFSMNT_RESVPORT; 377 break; 378 case 'q': 379 if (force2) 380 errx(1, "nqnfs only available with v3"); 381 force3 = 1; 382 nfsargsp->flags |= NFSMNT_NQNFS; 383 break; 384 case 'R': 385 num = strtol(optarg, &p, 10); 386 if (*p || num <= 0) 387 errx(1, "illegal -R value -- %s", optarg); 388 retrycnt = num; 389 break; 390 case 'r': 391 num = strtol(optarg, &p, 10); 392 if (*p || num <= 0) 393 errx(1, "illegal -r value -- %s", optarg); 394 nfsargsp->rsize = num; 395 nfsargsp->flags |= NFSMNT_RSIZE; 396 break; 397 #ifdef ISO 398 case 'S': 399 nfsargsp->sotype = SOCK_SEQPACKET; 400 break; 401 #endif 402 case 's': 403 nfsargsp->flags |= NFSMNT_SOFT; 404 break; 405 case 'T': 406 nfsargsp->sotype = SOCK_STREAM; 407 nfsproto = IPPROTO_TCP; 408 break; 409 case 't': 410 num = strtol(optarg, &p, 10); 411 if (*p || num <= 0) 412 errx(1, "illegal -t value -- %s", optarg); 413 nfsargsp->timeo = num; 414 nfsargsp->flags |= NFSMNT_TIMEO; 415 break; 416 case 'w': 417 num = strtol(optarg, &p, 10); 418 if (*p || num <= 0) 419 errx(1, "illegal -w value -- %s", optarg); 420 nfsargsp->wsize = num; 421 nfsargsp->flags |= NFSMNT_WSIZE; 422 break; 423 case 'x': 424 num = strtol(optarg, &p, 10); 425 if (*p || num <= 0) 426 errx(1, "illegal -x value -- %s", optarg); 427 nfsargsp->retrans = num; 428 nfsargsp->flags |= NFSMNT_RETRANS; 429 break; 430 case 'X': 431 nfsargsp->flags |= NFSMNT_XLATECOOKIE; 432 break; 433 case 'U': 434 mnttcp_ok = 0; 435 break; 436 default: 437 usage(); 438 break; 439 } 440 argc -= optind; 441 argv += optind; 442 443 if (argc != 2) 444 usage(); 445 446 spec = *argv++; 447 if (realpath(*argv, name) == NULL) /* Check mounton path */ 448 err(1, "realpath %s", *argv); 449 if (strncmp(*argv, name, MAXPATHLEN)) { 450 warnx("\"%s\" is a relative path.", *argv); 451 warnx("using \"%s\" instead.", name); 452 } 453 454 retry: 455 if ((mntflags & MNT_GETARGS) != 0) { 456 memset(&sa, 0, sizeof(sa)); 457 nfsargsp->addr = (struct sockaddr *)&sa; 458 nfsargsp->addrlen = sizeof(sa); 459 } else { 460 char *tspec; 461 462 if ((tspec = strdup(spec)) == NULL) { 463 err(1, "strdup"); 464 } 465 if (!getnfsargs(tspec, nfsargsp)) { 466 exit(1); 467 } 468 free(tspec); 469 } 470 if ((retval = mount(MOUNT_NFS, name, mntflags, nfsargsp))) { 471 /* Did we just default to v3 on a v2-only kernel? 472 * If so, default to v2 & try again */ 473 if (errno == EPROGMISMATCH && 474 (nfsargsp->flags & NFSMNT_NFSV3) != 0 && !force3) { 475 /* 476 * fall back to v2. XXX lack of V3 umount. 477 */ 478 nfsargsp->flags &= ~NFSMNT_NFSV3; 479 goto retry; 480 } 481 } 482 if (retval) 483 err(1, "%s on %s", spec, name); 484 if (mntflags & MNT_GETARGS) { 485 shownfsargs(nfsargsp); 486 return (0); 487 } 488 489 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 490 if ((opflags & ISBGRND) == 0) { 491 if ((i = fork()) != 0) { 492 if (i == -1) 493 err(1, "nqnfs 1"); 494 exit(0); 495 } 496 (void) setsid(); 497 (void) close(STDIN_FILENO); 498 (void) close(STDOUT_FILENO); 499 (void) close(STDERR_FILENO); 500 (void) chdir("/"); 501 } 502 openlog("mount_nfs", LOG_PID, LOG_DAEMON); 503 nfssvc_flag = NFSSVC_MNTD; 504 ncd.ncd_dirp = name; 505 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 506 if (errno != ENEEDAUTH) { 507 syslog(LOG_ERR, "nfssvc err %m"); 508 continue; 509 } 510 nfssvc_flag = 511 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 512 } 513 } 514 exit(0); 515 } 516 517 static void 518 shownfsargs(const struct nfs_args *nfsargsp) 519 { 520 char fbuf[2048]; 521 char host[NI_MAXHOST], serv[NI_MAXSERV]; 522 int error; 523 524 (void)snprintb(fbuf, sizeof(fbuf), NFSMNT_BITS, nfsargsp->flags); 525 if (nfsargsp->addr != NULL) { 526 error = getnameinfo(nfsargsp->addr, nfsargsp->addrlen, host, 527 sizeof(host), serv, sizeof(serv), 528 NI_NUMERICHOST | NI_NUMERICSERV); 529 if (error != 0) 530 warnx("getnameinfo: %s", gai_strerror(error)); 531 } else 532 error = -1; 533 534 if (error == 0) 535 printf("addr=%s, port=%s, addrlen=%d, ", 536 host, serv, nfsargsp->addrlen); 537 printf("sotype=%d, proto=%d, fhsize=%d, " 538 "flags=%s, wsize=%d, rsize=%d, readdirsize=%d, timeo=%d, " 539 "retrans=%d, maxgrouplist=%d, readahead=%d, leaseterm=%d, " 540 "deadthresh=%d\n", 541 nfsargsp->sotype, 542 nfsargsp->proto, 543 nfsargsp->fhsize, 544 fbuf, 545 nfsargsp->wsize, 546 nfsargsp->rsize, 547 nfsargsp->readdirsize, 548 nfsargsp->timeo, 549 nfsargsp->retrans, 550 nfsargsp->maxgrouplist, 551 nfsargsp->readahead, 552 nfsargsp->leaseterm, 553 nfsargsp->deadthresh); 554 } 555 556 static void 557 usage(void) 558 { 559 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n%s\n", 560 "[-23bcCdilpPqsTUX] [-a maxreadahead] [-D deadthresh]", 561 "\t[-g maxgroups] [-I readdirsize] [-L leaseterm]", 562 "\t[-o options] [-R retrycnt] [-r readsize] [-t timeout]", 563 "\t[-w writesize] [-x retrans]", 564 "\trhost:path node"); 565 exit(1); 566 } 567
Indexes created Mon Sep 29 21:09:56 GMT 2025