mount_nfs.c revision 1.53
1 /* $NetBSD: mount_nfs.c,v 1.53 2006/11/09 10:07:00 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 1.53 2006/11/09 10:07:00 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 /* ignore */ 236 break; 237 case 'd': 238 nfsargsp->flags |= NFSMNT_DUMBTIMR; 239 break; 240 #if 0 /* XXXX */ 241 case 'g': 242 num = strtol(optarg, &p, 10); 243 if (*p || num <= 0) 244 errx(1, "illegal -g value -- %s", optarg); 245 set_rpc_maxgrouplist(num); 246 nfsargsp->maxgrouplist = num; 247 nfsargsp->flags |= NFSMNT_MAXGRPS; 248 break; 249 #endif 250 case 'I': 251 num = strtol(optarg, &p, 10); 252 if (*p || num <= 0) 253 errx(1, "illegal -I value -- %s", optarg); 254 nfsargsp->readdirsize = num; 255 nfsargsp->flags |= NFSMNT_READDIRSIZE; 256 break; 257 case 'i': 258 nfsargsp->flags |= NFSMNT_INT; 259 break; 260 case 'L': 261 /* ignore */ 262 break; 263 case 'l': 264 nfsargsp->flags |= NFSMNT_RDIRPLUS; 265 break; 266 case 'o': 267 mp = getmntopts(optarg, mopts, &mntflags, &altflags); 268 if (mp == NULL) 269 err(1, "getmntopts"); 270 if (altflags & ALTF_BG) 271 opflags |= BGRND; 272 if (altflags & ALTF_CONN) 273 nfsargsp->flags &= ~NFSMNT_NOCONN; 274 if (altflags & ALTF_DUMBTIMR) 275 nfsargsp->flags |= NFSMNT_DUMBTIMR; 276 if (altflags & ALTF_INTR) 277 nfsargsp->flags |= NFSMNT_INT; 278 if (altflags & (ALTF_NFSV3|ALTF_NQNFS)) { 279 if (force2) 280 errx(1, "conflicting version options"); 281 force3 = 1; 282 } 283 if (altflags & ALTF_NFSV2) { 284 if (force3) 285 errx(1, "conflicting version options"); 286 force2 = 1; 287 nfsargsp->flags &= ~NFSMNT_NFSV3; 288 } 289 if (altflags & ALTF_RDIRPLUS) 290 nfsargsp->flags |= NFSMNT_RDIRPLUS; 291 if (altflags & ALTF_MNTUDP) 292 mnttcp_ok = 0; 293 if (altflags & ALTF_NORESPORT) 294 nfsargsp->flags &= ~NFSMNT_RESVPORT; 295 #ifdef ISO 296 if (altflags & ALTF_SEQPACKET) 297 nfsargsp->sotype = SOCK_SEQPACKET; 298 #endif 299 if (altflags & ALTF_SOFT) 300 nfsargsp->flags |= NFSMNT_SOFT; 301 if (altflags & ALTF_TCP) { 302 nfsargsp->sotype = SOCK_STREAM; 303 nfsproto = IPPROTO_TCP; 304 } 305 if (altflags & ALTF_PORT) { 306 port = getmntoptnum(mp, "port"); 307 } 308 if (altflags & ALTF_RSIZE) { 309 nfsargsp->rsize = 310 (int)getmntoptnum(mp, "rsize"); 311 nfsargsp->flags |= NFSMNT_RSIZE; 312 } 313 if (altflags & ALTF_WSIZE) { 314 nfsargsp->wsize = 315 (int)getmntoptnum(mp, "wsize"); 316 nfsargsp->flags |= NFSMNT_WSIZE; 317 } 318 if (altflags & ALTF_RDIRSIZE) { 319 nfsargsp->rsize = 320 (int)getmntoptnum(mp, "rdirsize"); 321 nfsargsp->flags |= NFSMNT_READDIRSIZE; 322 } 323 #if 0 324 if (altflags & ALTF_MAXGRPS) { 325 set_rpc_maxgrouplist(num); 326 nfsargsp->maxgrouplist = 327 (int)getmntoptnum(mp, "maxgrps"); 328 nfsargsp->flags |= NFSMNT_MAXGRPS; 329 } 330 #endif 331 if (altflags & ALTF_LEASETERM) { 332 nfsargsp->leaseterm = 333 (int)getmntoptnum(mp, "leaseterm"); 334 nfsargsp->flags |= NFSMNT_LEASETERM; 335 } 336 if (altflags & ALTF_READAHEAD) { 337 nfsargsp->readahead = 338 (int)getmntoptnum(mp, "readahead"); 339 nfsargsp->flags |= NFSMNT_READAHEAD; 340 } 341 if (altflags & ALTF_DEADTHRESH) { 342 nfsargsp->deadthresh = 343 (int)getmntoptnum(mp, "deadthresh"); 344 nfsargsp->flags |= NFSMNT_DEADTHRESH; 345 } 346 if (altflags & ALTF_TIMEO) { 347 nfsargsp->timeo = 348 (int)getmntoptnum(mp, "timeo"); 349 nfsargsp->flags |= NFSMNT_TIMEO; 350 } 351 if (altflags & ALTF_RETRANS) { 352 nfsargsp->retrans = 353 (int)getmntoptnum(mp, "retrans"); 354 nfsargsp->flags |= NFSMNT_RETRANS; 355 } 356 altflags = 0; 357 freemntopts(mp); 358 break; 359 case 'P': 360 nfsargsp->flags |= NFSMNT_RESVPORT; 361 break; 362 case 'p': 363 nfsargsp->flags &= ~NFSMNT_RESVPORT; 364 break; 365 case 'R': 366 num = strtol(optarg, &p, 10); 367 if (*p || num <= 0) 368 errx(1, "illegal -R value -- %s", optarg); 369 retrycnt = num; 370 break; 371 case 'r': 372 num = strtol(optarg, &p, 10); 373 if (*p || num <= 0) 374 errx(1, "illegal -r value -- %s", optarg); 375 nfsargsp->rsize = num; 376 nfsargsp->flags |= NFSMNT_RSIZE; 377 break; 378 #ifdef ISO 379 case 'S': 380 nfsargsp->sotype = SOCK_SEQPACKET; 381 break; 382 #endif 383 case 's': 384 nfsargsp->flags |= NFSMNT_SOFT; 385 break; 386 case 'T': 387 nfsargsp->sotype = SOCK_STREAM; 388 nfsproto = IPPROTO_TCP; 389 break; 390 case 't': 391 num = strtol(optarg, &p, 10); 392 if (*p || num <= 0) 393 errx(1, "illegal -t value -- %s", optarg); 394 nfsargsp->timeo = num; 395 nfsargsp->flags |= NFSMNT_TIMEO; 396 break; 397 case 'w': 398 num = strtol(optarg, &p, 10); 399 if (*p || num <= 0) 400 errx(1, "illegal -w value -- %s", optarg); 401 nfsargsp->wsize = num; 402 nfsargsp->flags |= NFSMNT_WSIZE; 403 break; 404 case 'x': 405 num = strtol(optarg, &p, 10); 406 if (*p || num <= 0) 407 errx(1, "illegal -x value -- %s", optarg); 408 nfsargsp->retrans = num; 409 nfsargsp->flags |= NFSMNT_RETRANS; 410 break; 411 case 'X': 412 nfsargsp->flags |= NFSMNT_XLATECOOKIE; 413 break; 414 case 'U': 415 mnttcp_ok = 0; 416 break; 417 default: 418 usage(); 419 break; 420 } 421 argc -= optind; 422 argv += optind; 423 424 if (argc != 2) 425 usage(); 426 427 spec = *argv++; 428 if (realpath(*argv, name) == NULL) /* Check mounton path */ 429 err(1, "realpath %s", *argv); 430 if (strncmp(*argv, name, MAXPATHLEN)) { 431 warnx("\"%s\" is a relative path.", *argv); 432 warnx("using \"%s\" instead.", name); 433 } 434 435 retry: 436 if ((mntflags & MNT_GETARGS) != 0) { 437 memset(&sa, 0, sizeof(sa)); 438 nfsargsp->addr = (struct sockaddr *)&sa; 439 nfsargsp->addrlen = sizeof(sa); 440 } else { 441 char *tspec; 442 443 if ((tspec = strdup(spec)) == NULL) { 444 err(1, "strdup"); 445 } 446 if (!getnfsargs(tspec, nfsargsp)) { 447 exit(1); 448 } 449 free(tspec); 450 } 451 if ((retval = mount(MOUNT_NFS, name, mntflags, nfsargsp))) { 452 /* Did we just default to v3 on a v2-only kernel? 453 * If so, default to v2 & try again */ 454 if (errno == EPROGMISMATCH && 455 (nfsargsp->flags & NFSMNT_NFSV3) != 0 && !force3) { 456 /* 457 * fall back to v2. XXX lack of V3 umount. 458 */ 459 nfsargsp->flags &= ~NFSMNT_NFSV3; 460 goto retry; 461 } 462 } 463 if (retval) 464 err(1, "%s on %s", spec, name); 465 if (mntflags & MNT_GETARGS) { 466 shownfsargs(nfsargsp); 467 return (0); 468 } 469 470 if (nfsargsp->flags & NFSMNT_KERB) { 471 if ((opflags & ISBGRND) == 0) { 472 if ((i = fork()) != 0) { 473 if (i == -1) 474 err(1, "nqnfs 1"); 475 exit(0); 476 } 477 (void) setsid(); 478 (void) close(STDIN_FILENO); 479 (void) close(STDOUT_FILENO); 480 (void) close(STDERR_FILENO); 481 (void) chdir("/"); 482 } 483 openlog("mount_nfs", LOG_PID, LOG_DAEMON); 484 nfssvc_flag = NFSSVC_MNTD; 485 ncd.ncd_dirp = name; 486 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 487 if (errno != ENEEDAUTH) { 488 syslog(LOG_ERR, "nfssvc err %m"); 489 continue; 490 } 491 nfssvc_flag = 492 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 493 } 494 } 495 exit(0); 496 } 497 498 static void 499 shownfsargs(const struct nfs_args *nfsargsp) 500 { 501 char fbuf[2048]; 502 char host[NI_MAXHOST], serv[NI_MAXSERV]; 503 int error; 504 505 (void)snprintb(fbuf, sizeof(fbuf), NFSMNT_BITS, nfsargsp->flags); 506 if (nfsargsp->addr != NULL) { 507 error = getnameinfo(nfsargsp->addr, nfsargsp->addrlen, host, 508 sizeof(host), serv, sizeof(serv), 509 NI_NUMERICHOST | NI_NUMERICSERV); 510 if (error != 0) 511 warnx("getnameinfo: %s", gai_strerror(error)); 512 } else 513 error = -1; 514 515 if (error == 0) 516 printf("addr=%s, port=%s, addrlen=%d, ", 517 host, serv, nfsargsp->addrlen); 518 printf("sotype=%d, proto=%d, fhsize=%d, " 519 "flags=%s, wsize=%d, rsize=%d, readdirsize=%d, timeo=%d, " 520 "retrans=%d, maxgrouplist=%d, readahead=%d, leaseterm=%d, " 521 "deadthresh=%d\n", 522 nfsargsp->sotype, 523 nfsargsp->proto, 524 nfsargsp->fhsize, 525 fbuf, 526 nfsargsp->wsize, 527 nfsargsp->rsize, 528 nfsargsp->readdirsize, 529 nfsargsp->timeo, 530 nfsargsp->retrans, 531 nfsargsp->maxgrouplist, 532 nfsargsp->readahead, 533 nfsargsp->leaseterm, 534 nfsargsp->deadthresh); 535 } 536 537 static void 538 usage(void) 539 { 540 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n%s\n", 541 "[-23bcCdilpPqsTUX] [-a maxreadahead] [-D deadthresh]", 542 "\t[-g maxgroups] [-I readdirsize] [-L leaseterm]", 543 "\t[-o options] [-R retrycnt] [-r readsize] [-t timeout]", 544 "\t[-w writesize] [-x retrans]", 545 "\trhost:path node"); 546 exit(1); 547 } 548
Indexes created Tue Sep 30 11:09:46 GMT 2025