mount_nfs.c revision 1.54
1 /* $NetBSD: mount_nfs.c,v 1.54 2006/12/27 11:05:04 yamt 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 1.54 2006/12/27 11:05:04 yamt 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 case 'q': 208 if (force2) 209 errx(1, "conflicting version options"); 210 force3 = 1; 211 break; 212 case '2': 213 if (force3) 214 errx(1, "conflicting version options"); 215 force2 = 1; 216 nfsargsp->flags &= ~NFSMNT_NFSV3; 217 break; 218 case 'a': 219 num = strtol(optarg, &p, 10); 220 if (*p || num < 0) 221 errx(1, "illegal -a value -- %s", optarg); 222 nfsargsp->readahead = num; 223 nfsargsp->flags |= NFSMNT_READAHEAD; 224 break; 225 case 'b': 226 opflags |= BGRND; 227 break; 228 case 'c': 229 nfsargsp->flags |= NFSMNT_NOCONN; 230 break; 231 case 'C': 232 nfsargsp->flags &= ~NFSMNT_NOCONN; 233 break; 234 case 'D': 235 num = strtol(optarg, &p, 10); 236 if (*p || num <= 0) 237 errx(1, "illegal -D value -- %s", optarg); 238 nfsargsp->deadthresh = num; 239 nfsargsp->flags |= NFSMNT_DEADTHRESH; 240 break; 241 case 'd': 242 nfsargsp->flags |= NFSMNT_DUMBTIMR; 243 break; 244 #if 0 /* XXXX */ 245 case 'g': 246 num = strtol(optarg, &p, 10); 247 if (*p || num <= 0) 248 errx(1, "illegal -g value -- %s", optarg); 249 set_rpc_maxgrouplist(num); 250 nfsargsp->maxgrouplist = num; 251 nfsargsp->flags |= NFSMNT_MAXGRPS; 252 break; 253 #endif 254 case 'I': 255 num = strtol(optarg, &p, 10); 256 if (*p || num <= 0) 257 errx(1, "illegal -I value -- %s", optarg); 258 nfsargsp->readdirsize = num; 259 nfsargsp->flags |= NFSMNT_READDIRSIZE; 260 break; 261 case 'i': 262 nfsargsp->flags |= NFSMNT_INT; 263 break; 264 case 'L': 265 /* ignore */ 266 break; 267 case 'l': 268 nfsargsp->flags |= NFSMNT_RDIRPLUS; 269 break; 270 case 'o': 271 mp = getmntopts(optarg, mopts, &mntflags, &altflags); 272 if (mp == NULL) 273 err(1, "getmntopts"); 274 if (altflags & ALTF_BG) 275 opflags |= BGRND; 276 if (altflags & ALTF_CONN) 277 nfsargsp->flags &= ~NFSMNT_NOCONN; 278 if (altflags & ALTF_DUMBTIMR) 279 nfsargsp->flags |= NFSMNT_DUMBTIMR; 280 if (altflags & ALTF_INTR) 281 nfsargsp->flags |= NFSMNT_INT; 282 if (altflags & (ALTF_NFSV3|ALTF_NQNFS)) { 283 if (force2) 284 errx(1, "conflicting version options"); 285 force3 = 1; 286 } 287 if (altflags & ALTF_NFSV2) { 288 if (force3) 289 errx(1, "conflicting version options"); 290 force2 = 1; 291 nfsargsp->flags &= ~NFSMNT_NFSV3; 292 } 293 if (altflags & ALTF_RDIRPLUS) 294 nfsargsp->flags |= NFSMNT_RDIRPLUS; 295 if (altflags & ALTF_MNTUDP) 296 mnttcp_ok = 0; 297 if (altflags & ALTF_NORESPORT) 298 nfsargsp->flags &= ~NFSMNT_RESVPORT; 299 #ifdef ISO 300 if (altflags & ALTF_SEQPACKET) 301 nfsargsp->sotype = SOCK_SEQPACKET; 302 #endif 303 if (altflags & ALTF_SOFT) 304 nfsargsp->flags |= NFSMNT_SOFT; 305 if (altflags & ALTF_TCP) { 306 nfsargsp->sotype = SOCK_STREAM; 307 nfsproto = IPPROTO_TCP; 308 } 309 if (altflags & ALTF_PORT) { 310 port = getmntoptnum(mp, "port"); 311 } 312 if (altflags & ALTF_RSIZE) { 313 nfsargsp->rsize = 314 (int)getmntoptnum(mp, "rsize"); 315 nfsargsp->flags |= NFSMNT_RSIZE; 316 } 317 if (altflags & ALTF_WSIZE) { 318 nfsargsp->wsize = 319 (int)getmntoptnum(mp, "wsize"); 320 nfsargsp->flags |= NFSMNT_WSIZE; 321 } 322 if (altflags & ALTF_RDIRSIZE) { 323 nfsargsp->rsize = 324 (int)getmntoptnum(mp, "rdirsize"); 325 nfsargsp->flags |= NFSMNT_READDIRSIZE; 326 } 327 #if 0 328 if (altflags & ALTF_MAXGRPS) { 329 set_rpc_maxgrouplist(num); 330 nfsargsp->maxgrouplist = 331 (int)getmntoptnum(mp, "maxgrps"); 332 nfsargsp->flags |= NFSMNT_MAXGRPS; 333 } 334 #endif 335 if (altflags & ALTF_LEASETERM) { 336 nfsargsp->leaseterm = 337 (int)getmntoptnum(mp, "leaseterm"); 338 nfsargsp->flags |= NFSMNT_LEASETERM; 339 } 340 if (altflags & ALTF_READAHEAD) { 341 nfsargsp->readahead = 342 (int)getmntoptnum(mp, "readahead"); 343 nfsargsp->flags |= NFSMNT_READAHEAD; 344 } 345 if (altflags & ALTF_DEADTHRESH) { 346 nfsargsp->deadthresh = 347 (int)getmntoptnum(mp, "deadthresh"); 348 nfsargsp->flags |= NFSMNT_DEADTHRESH; 349 } 350 if (altflags & ALTF_TIMEO) { 351 nfsargsp->timeo = 352 (int)getmntoptnum(mp, "timeo"); 353 nfsargsp->flags |= NFSMNT_TIMEO; 354 } 355 if (altflags & ALTF_RETRANS) { 356 nfsargsp->retrans = 357 (int)getmntoptnum(mp, "retrans"); 358 nfsargsp->flags |= NFSMNT_RETRANS; 359 } 360 altflags = 0; 361 freemntopts(mp); 362 break; 363 case 'P': 364 nfsargsp->flags |= NFSMNT_RESVPORT; 365 break; 366 case 'p': 367 nfsargsp->flags &= ~NFSMNT_RESVPORT; 368 break; 369 case 'R': 370 num = strtol(optarg, &p, 10); 371 if (*p || num <= 0) 372 errx(1, "illegal -R value -- %s", optarg); 373 retrycnt = num; 374 break; 375 case 'r': 376 num = strtol(optarg, &p, 10); 377 if (*p || num <= 0) 378 errx(1, "illegal -r value -- %s", optarg); 379 nfsargsp->rsize = num; 380 nfsargsp->flags |= NFSMNT_RSIZE; 381 break; 382 #ifdef ISO 383 case 'S': 384 nfsargsp->sotype = SOCK_SEQPACKET; 385 break; 386 #endif 387 case 's': 388 nfsargsp->flags |= NFSMNT_SOFT; 389 break; 390 case 'T': 391 nfsargsp->sotype = SOCK_STREAM; 392 nfsproto = IPPROTO_TCP; 393 break; 394 case 't': 395 num = strtol(optarg, &p, 10); 396 if (*p || num <= 0) 397 errx(1, "illegal -t value -- %s", optarg); 398 nfsargsp->timeo = num; 399 nfsargsp->flags |= NFSMNT_TIMEO; 400 break; 401 case 'w': 402 num = strtol(optarg, &p, 10); 403 if (*p || num <= 0) 404 errx(1, "illegal -w value -- %s", optarg); 405 nfsargsp->wsize = num; 406 nfsargsp->flags |= NFSMNT_WSIZE; 407 break; 408 case 'x': 409 num = strtol(optarg, &p, 10); 410 if (*p || num <= 0) 411 errx(1, "illegal -x value -- %s", optarg); 412 nfsargsp->retrans = num; 413 nfsargsp->flags |= NFSMNT_RETRANS; 414 break; 415 case 'X': 416 nfsargsp->flags |= NFSMNT_XLATECOOKIE; 417 break; 418 case 'U': 419 mnttcp_ok = 0; 420 break; 421 default: 422 usage(); 423 break; 424 } 425 argc -= optind; 426 argv += optind; 427 428 if (argc != 2) 429 usage(); 430 431 spec = *argv++; 432 if (realpath(*argv, name) == NULL) /* Check mounton path */ 433 err(1, "realpath %s", *argv); 434 if (strncmp(*argv, name, MAXPATHLEN)) { 435 warnx("\"%s\" is a relative path.", *argv); 436 warnx("using \"%s\" instead.", name); 437 } 438 439 retry: 440 if ((mntflags & MNT_GETARGS) != 0) { 441 memset(&sa, 0, sizeof(sa)); 442 nfsargsp->addr = (struct sockaddr *)&sa; 443 nfsargsp->addrlen = sizeof(sa); 444 } else { 445 char *tspec; 446 447 if ((tspec = strdup(spec)) == NULL) { 448 err(1, "strdup"); 449 } 450 if (!getnfsargs(tspec, nfsargsp)) { 451 exit(1); 452 } 453 free(tspec); 454 } 455 if ((retval = mount(MOUNT_NFS, name, mntflags, nfsargsp))) { 456 /* Did we just default to v3 on a v2-only kernel? 457 * If so, default to v2 & try again */ 458 if (errno == EPROGMISMATCH && 459 (nfsargsp->flags & NFSMNT_NFSV3) != 0 && !force3) { 460 /* 461 * fall back to v2. XXX lack of V3 umount. 462 */ 463 nfsargsp->flags &= ~NFSMNT_NFSV3; 464 goto retry; 465 } 466 } 467 if (retval) 468 err(1, "%s on %s", spec, name); 469 if (mntflags & MNT_GETARGS) { 470 shownfsargs(nfsargsp); 471 return (0); 472 } 473 474 if (nfsargsp->flags & NFSMNT_KERB) { 475 if ((opflags & ISBGRND) == 0) { 476 if ((i = fork()) != 0) { 477 if (i == -1) 478 err(1, "nqnfs 1"); 479 exit(0); 480 } 481 (void) setsid(); 482 (void) close(STDIN_FILENO); 483 (void) close(STDOUT_FILENO); 484 (void) close(STDERR_FILENO); 485 (void) chdir("/"); 486 } 487 openlog("mount_nfs", LOG_PID, LOG_DAEMON); 488 nfssvc_flag = NFSSVC_MNTD; 489 ncd.ncd_dirp = name; 490 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 491 if (errno != ENEEDAUTH) { 492 syslog(LOG_ERR, "nfssvc err %m"); 493 continue; 494 } 495 nfssvc_flag = 496 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 497 } 498 } 499 exit(0); 500 } 501 502 static void 503 shownfsargs(const struct nfs_args *nfsargsp) 504 { 505 char fbuf[2048]; 506 char host[NI_MAXHOST], serv[NI_MAXSERV]; 507 int error; 508 509 (void)snprintb(fbuf, sizeof(fbuf), NFSMNT_BITS, nfsargsp->flags); 510 if (nfsargsp->addr != NULL) { 511 error = getnameinfo(nfsargsp->addr, nfsargsp->addrlen, host, 512 sizeof(host), serv, sizeof(serv), 513 NI_NUMERICHOST | NI_NUMERICSERV); 514 if (error != 0) 515 warnx("getnameinfo: %s", gai_strerror(error)); 516 } else 517 error = -1; 518 519 if (error == 0) 520 printf("addr=%s, port=%s, addrlen=%d, ", 521 host, serv, nfsargsp->addrlen); 522 printf("sotype=%d, proto=%d, fhsize=%d, " 523 "flags=%s, wsize=%d, rsize=%d, readdirsize=%d, timeo=%d, " 524 "retrans=%d, maxgrouplist=%d, readahead=%d, leaseterm=%d, " 525 "deadthresh=%d\n", 526 nfsargsp->sotype, 527 nfsargsp->proto, 528 nfsargsp->fhsize, 529 fbuf, 530 nfsargsp->wsize, 531 nfsargsp->rsize, 532 nfsargsp->readdirsize, 533 nfsargsp->timeo, 534 nfsargsp->retrans, 535 nfsargsp->maxgrouplist, 536 nfsargsp->readahead, 537 nfsargsp->leaseterm, 538 nfsargsp->deadthresh); 539 } 540 541 static void 542 usage(void) 543 { 544 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n%s\n", 545 "[-23bcCdilpPqsTUX] [-a maxreadahead] [-D deadthresh]", 546 "\t[-g maxgroups] [-I readdirsize] [-L leaseterm]", 547 "\t[-o options] [-R retrycnt] [-r readsize] [-t timeout]", 548 "\t[-w writesize] [-x retrans]", 549 "\trhost:path node"); 550 exit(1); 551 } 552
Indexes created Tue Sep 30 20:09:53 GMT 2025