mount_nfs.c revision 1.63
1 /* $NetBSD: mount_nfs.c,v 1.63 2008/09/27 20:39:42 pooka 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\ 38 The Regents of the University of California. All rights reserved."); 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 1.63 2008/09/27 20:39:42 pooka 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/nfsmount.h> 63 64 #include <arpa/inet.h> 65 66 #include <err.h> 67 #include <errno.h> 68 #include <fcntl.h> 69 #include <netdb.h> 70 #include <signal.h> 71 #include <stdio.h> 72 #include <stdlib.h> 73 #include <string.h> 74 #include <unistd.h> 75 #include <util.h> 76 77 #include <mntopts.h> 78 79 #include "mount_nfs.h" 80 81 #define ALTF_BG 0x00000001 82 #define ALTF_CONN 0x00000002 83 #define ALTF_DUMBTIMR 0x00000004 84 #define ALTF_INTR 0x00000008 85 #define ALTF_NFSV3 0x00000020 86 #define ALTF_RDIRPLUS 0x00000040 87 #define ALTF_MNTUDP 0x00000080 88 #define ALTF_NORESPORT 0x00000100 89 #define ALTF_SEQPACKET 0x00000200 90 #define ALTF_NQNFS 0x00000400 91 #define ALTF_SOFT 0x00000800 92 #define ALTF_TCP 0x00001000 93 #define ALTF_NFSV2 0x00002000 94 #define ALTF_PORT 0x00004000 95 #define ALTF_RSIZE 0x00008000 96 #define ALTF_WSIZE 0x00010000 97 #define ALTF_RDIRSIZE 0x00020000 98 #define ALTF_MAXGRPS 0x00040000 99 #define ALTF_LEASETERM 0x00080000 100 #define ALTF_READAHEAD 0x00100000 101 #define ALTF_DEADTHRESH 0x00200000 102 #define ALTF_TIMEO 0x00400000 103 #define ALTF_RETRANS 0x00800000 104 105 static const struct mntopt mopts[] = { 106 MOPT_STDOPTS, 107 MOPT_FORCE, 108 MOPT_UPDATE, 109 MOPT_GETARGS, 110 { "bg", 0, ALTF_BG, 1 }, 111 { "conn", 0, ALTF_CONN, 1 }, 112 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 113 { "intr", 0, ALTF_INTR, 1 }, 114 { "nfsv3", 0, ALTF_NFSV3, 1 }, 115 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 116 { "mntudp", 0, ALTF_MNTUDP, 1 }, 117 { "noresport", 0, ALTF_NORESPORT, 1 }, 118 #ifdef ISO 119 { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 120 #endif 121 { "nqnfs", 0, ALTF_NQNFS, 1 }, 122 { "soft", 0, ALTF_SOFT, 1 }, 123 { "tcp", 0, ALTF_TCP, 1 }, 124 { "nfsv2", 0, ALTF_NFSV2, 1 }, 125 { "port", 0, ALTF_PORT, 1 }, 126 { "rsize", 0, ALTF_RSIZE, 1 }, 127 { "wsize", 0, ALTF_WSIZE, 1 }, 128 { "rdirsize", 0, ALTF_RDIRSIZE, 1 }, 129 { "maxgrps", 0, ALTF_MAXGRPS, 1 }, 130 { "leaseterm", 0, ALTF_LEASETERM, 1 }, 131 { "readahead", 0, ALTF_READAHEAD, 1 }, 132 { "deadthresh", 0, ALTF_DEADTHRESH, 1 }, 133 { "timeo", 0, ALTF_TIMEO, 1 }, 134 MOPT_NULL, 135 136 }; 137 138 struct nfs_args nfsdefargs = { 139 NFS_ARGSVERSION, 140 (struct sockaddr *)0, 141 sizeof (struct sockaddr_in), 142 SOCK_DGRAM, 143 0, 144 (u_char *)0, 145 0, 146 NFSMNT_NFSV3|NFSMNT_NOCONN|NFSMNT_RESVPORT, 147 NFS_WSIZE, 148 NFS_RSIZE, 149 NFS_READDIRSIZE, 150 10, 151 NFS_RETRANS, 152 NFS_MAXGRPS, 153 NFS_DEFRAHEAD, 154 0, /* Ignored; lease term */ 155 NFS_DEFDEADTHRESH, 156 (char *)0, 157 }; 158 159 int retrycnt = DEF_RETRY; 160 int opflags = 0; 161 int force2 = 0; 162 int force3 = 0; 163 int mnttcp_ok = 1; 164 int port = 0; 165 166 static void shownfsargs(const struct nfs_args *); 167 #ifdef ISO 168 static struct iso_addr *iso_addr(const char *); 169 #endif 170 int mount_nfs(int argc, char **argv); 171 /* void set_rpc_maxgrouplist(int); */ 172 static void usage(void); 173 174 #ifndef MOUNT_NOMAIN 175 int 176 main(int argc, char **argv) 177 { 178 return mount_nfs(argc, argv); 179 } 180 #endif 181 182 int 183 mount_nfs(int argc, char *argv[]) 184 { 185 int c, retval; 186 struct nfs_args *nfsargsp; 187 struct nfs_args nfsargs; 188 struct sockaddr_storage sa; 189 int mntflags, altflags, num; 190 char name[MAXPATHLEN], *p, *spec; 191 mntoptparse_t mp; 192 193 mntflags = 0; 194 altflags = 0; 195 nfsargs = nfsdefargs; 196 nfsargsp = &nfsargs; 197 while ((c = getopt(argc, argv, 198 "23a:bcCdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:UX")) != -1) 199 switch (c) { 200 case '3': 201 case 'q': 202 if (force2) 203 errx(1, "conflicting version options"); 204 force3 = 1; 205 break; 206 case '2': 207 if (force3) 208 errx(1, "conflicting version options"); 209 force2 = 1; 210 nfsargsp->flags &= ~NFSMNT_NFSV3; 211 break; 212 case 'a': 213 num = strtol(optarg, &p, 10); 214 if (*p || num < 0) 215 errx(1, "illegal -a value -- %s", optarg); 216 nfsargsp->readahead = num; 217 nfsargsp->flags |= NFSMNT_READAHEAD; 218 break; 219 case 'b': 220 opflags |= BGRND; 221 break; 222 case 'c': 223 nfsargsp->flags |= NFSMNT_NOCONN; 224 break; 225 case 'C': 226 nfsargsp->flags &= ~NFSMNT_NOCONN; 227 break; 228 case 'D': 229 num = strtol(optarg, &p, 10); 230 if (*p || num <= 0) 231 errx(1, "illegal -D value -- %s", optarg); 232 nfsargsp->deadthresh = num; 233 nfsargsp->flags |= NFSMNT_DEADTHRESH; 234 break; 235 case 'd': 236 nfsargsp->flags |= NFSMNT_DUMBTIMR; 237 break; 238 #if 0 /* XXXX */ 239 case 'g': 240 num = strtol(optarg, &p, 10); 241 if (*p || num <= 0) 242 errx(1, "illegal -g value -- %s", optarg); 243 set_rpc_maxgrouplist(num); 244 nfsargsp->maxgrouplist = num; 245 nfsargsp->flags |= NFSMNT_MAXGRPS; 246 break; 247 #endif 248 case 'I': 249 num = strtol(optarg, &p, 10); 250 if (*p || num <= 0) 251 errx(1, "illegal -I value -- %s", optarg); 252 nfsargsp->readdirsize = num; 253 nfsargsp->flags |= NFSMNT_READDIRSIZE; 254 break; 255 case 'i': 256 nfsargsp->flags |= NFSMNT_INT; 257 break; 258 case 'L': 259 /* ignore */ 260 break; 261 case 'l': 262 nfsargsp->flags |= NFSMNT_RDIRPLUS; 263 break; 264 case 'o': 265 mp = getmntopts(optarg, mopts, &mntflags, &altflags); 266 if (mp == NULL) 267 err(1, "getmntopts"); 268 if (altflags & ALTF_BG) 269 opflags |= BGRND; 270 if (altflags & ALTF_CONN) 271 nfsargsp->flags &= ~NFSMNT_NOCONN; 272 if (altflags & ALTF_DUMBTIMR) 273 nfsargsp->flags |= NFSMNT_DUMBTIMR; 274 if (altflags & ALTF_INTR) 275 nfsargsp->flags |= NFSMNT_INT; 276 if (altflags & (ALTF_NFSV3|ALTF_NQNFS)) { 277 if (force2) 278 errx(1, "conflicting version options"); 279 force3 = 1; 280 } 281 if (altflags & ALTF_NFSV2) { 282 if (force3) 283 errx(1, "conflicting version options"); 284 force2 = 1; 285 nfsargsp->flags &= ~NFSMNT_NFSV3; 286 } 287 if (altflags & ALTF_RDIRPLUS) 288 nfsargsp->flags |= NFSMNT_RDIRPLUS; 289 if (altflags & ALTF_MNTUDP) 290 mnttcp_ok = 0; 291 if (altflags & ALTF_NORESPORT) 292 nfsargsp->flags &= ~NFSMNT_RESVPORT; 293 #ifdef ISO 294 if (altflags & ALTF_SEQPACKET) 295 nfsargsp->sotype = SOCK_SEQPACKET; 296 #endif 297 if (altflags & ALTF_SOFT) 298 nfsargsp->flags |= NFSMNT_SOFT; 299 if (altflags & ALTF_TCP) { 300 nfsargsp->sotype = SOCK_STREAM; 301 } 302 if (altflags & ALTF_PORT) { 303 port = getmntoptnum(mp, "port"); 304 } 305 if (altflags & ALTF_RSIZE) { 306 nfsargsp->rsize = 307 (int)getmntoptnum(mp, "rsize"); 308 nfsargsp->flags |= NFSMNT_RSIZE; 309 } 310 if (altflags & ALTF_WSIZE) { 311 nfsargsp->wsize = 312 (int)getmntoptnum(mp, "wsize"); 313 nfsargsp->flags |= NFSMNT_WSIZE; 314 } 315 if (altflags & ALTF_RDIRSIZE) { 316 nfsargsp->rsize = 317 (int)getmntoptnum(mp, "rdirsize"); 318 nfsargsp->flags |= NFSMNT_READDIRSIZE; 319 } 320 #if 0 321 if (altflags & ALTF_MAXGRPS) { 322 set_rpc_maxgrouplist(num); 323 nfsargsp->maxgrouplist = 324 (int)getmntoptnum(mp, "maxgrps"); 325 nfsargsp->flags |= NFSMNT_MAXGRPS; 326 } 327 #endif 328 if (altflags & ALTF_LEASETERM) { 329 nfsargsp->leaseterm = 330 (int)getmntoptnum(mp, "leaseterm"); 331 nfsargsp->flags |= NFSMNT_LEASETERM; 332 } 333 if (altflags & ALTF_READAHEAD) { 334 nfsargsp->readahead = 335 (int)getmntoptnum(mp, "readahead"); 336 nfsargsp->flags |= NFSMNT_READAHEAD; 337 } 338 if (altflags & ALTF_DEADTHRESH) { 339 nfsargsp->deadthresh = 340 (int)getmntoptnum(mp, "deadthresh"); 341 nfsargsp->flags |= NFSMNT_DEADTHRESH; 342 } 343 if (altflags & ALTF_TIMEO) { 344 nfsargsp->timeo = 345 (int)getmntoptnum(mp, "timeo"); 346 nfsargsp->flags |= NFSMNT_TIMEO; 347 } 348 if (altflags & ALTF_RETRANS) { 349 nfsargsp->retrans = 350 (int)getmntoptnum(mp, "retrans"); 351 nfsargsp->flags |= NFSMNT_RETRANS; 352 } 353 altflags = 0; 354 freemntopts(mp); 355 break; 356 case 'P': 357 nfsargsp->flags |= NFSMNT_RESVPORT; 358 break; 359 case 'p': 360 nfsargsp->flags &= ~NFSMNT_RESVPORT; 361 break; 362 case 'R': 363 num = strtol(optarg, &p, 10); 364 if (*p || num <= 0) 365 errx(1, "illegal -R value -- %s", optarg); 366 retrycnt = num; 367 break; 368 case 'r': 369 num = strtol(optarg, &p, 10); 370 if (*p || num <= 0) 371 errx(1, "illegal -r value -- %s", optarg); 372 nfsargsp->rsize = num; 373 nfsargsp->flags |= NFSMNT_RSIZE; 374 break; 375 #ifdef ISO 376 case 'S': 377 nfsargsp->sotype = SOCK_SEQPACKET; 378 break; 379 #endif 380 case 's': 381 nfsargsp->flags |= NFSMNT_SOFT; 382 break; 383 case 'T': 384 nfsargsp->sotype = SOCK_STREAM; 385 break; 386 case 't': 387 num = strtol(optarg, &p, 10); 388 if (*p || num <= 0) 389 errx(1, "illegal -t value -- %s", optarg); 390 nfsargsp->timeo = num; 391 nfsargsp->flags |= NFSMNT_TIMEO; 392 break; 393 case 'w': 394 num = strtol(optarg, &p, 10); 395 if (*p || num <= 0) 396 errx(1, "illegal -w value -- %s", optarg); 397 nfsargsp->wsize = num; 398 nfsargsp->flags |= NFSMNT_WSIZE; 399 break; 400 case 'x': 401 num = strtol(optarg, &p, 10); 402 if (*p || num <= 0) 403 errx(1, "illegal -x value -- %s", optarg); 404 nfsargsp->retrans = num; 405 nfsargsp->flags |= NFSMNT_RETRANS; 406 break; 407 case 'X': 408 nfsargsp->flags |= NFSMNT_XLATECOOKIE; 409 break; 410 case 'U': 411 mnttcp_ok = 0; 412 break; 413 default: 414 usage(); 415 break; 416 } 417 argc -= optind; 418 argv += optind; 419 420 if (argc != 2) 421 usage(); 422 423 spec = *argv++; 424 if (realpath(*argv, name) == NULL) /* Check mounton path */ 425 err(1, "realpath %s", *argv); 426 if (strncmp(*argv, name, MAXPATHLEN)) { 427 warnx("\"%s\" is a relative path.", *argv); 428 warnx("using \"%s\" instead.", name); 429 } 430 431 retry: 432 if ((mntflags & MNT_GETARGS) != 0) { 433 memset(&sa, 0, sizeof(sa)); 434 nfsargsp->addr = (struct sockaddr *)&sa; 435 nfsargsp->addrlen = sizeof(sa); 436 } else { 437 char *tspec; 438 439 if ((tspec = strdup(spec)) == NULL) { 440 err(1, "strdup"); 441 } 442 if (!getnfsargs(tspec, nfsargsp)) { 443 exit(1); 444 } 445 free(tspec); 446 } 447 if ((retval = mount(MOUNT_NFS, name, mntflags, 448 nfsargsp, sizeof *nfsargsp)) == -1) { 449 /* Did we just default to v3 on a v2-only kernel? 450 * If so, default to v2 & try again */ 451 if (errno == EPROGMISMATCH && 452 (nfsargsp->flags & NFSMNT_NFSV3) != 0 && !force3) { 453 /* 454 * fall back to v2. XXX lack of V3 umount. 455 */ 456 nfsargsp->flags &= ~NFSMNT_NFSV3; 457 goto retry; 458 } 459 } 460 if (retval == -1) 461 err(1, "%s on %s", spec, name); 462 if (mntflags & MNT_GETARGS) { 463 shownfsargs(nfsargsp); 464 return (0); 465 } 466 467 exit(0); 468 } 469 470 static void 471 shownfsargs(const struct nfs_args *nfsargsp) 472 { 473 char fbuf[2048]; 474 char host[NI_MAXHOST], serv[NI_MAXSERV]; 475 int error; 476 477 (void)snprintb(fbuf, sizeof(fbuf), NFSMNT_BITS, nfsargsp->flags); 478 if (nfsargsp->addr != NULL) { 479 error = getnameinfo(nfsargsp->addr, nfsargsp->addrlen, host, 480 sizeof(host), serv, sizeof(serv), 481 NI_NUMERICHOST | NI_NUMERICSERV); 482 if (error != 0) 483 warnx("getnameinfo: %s", gai_strerror(error)); 484 } else 485 error = -1; 486 487 if (error == 0) 488 printf("addr=%s, port=%s, addrlen=%d, ", 489 host, serv, nfsargsp->addrlen); 490 printf("sotype=%d, proto=%d, fhsize=%d, " 491 "flags=%s, wsize=%d, rsize=%d, readdirsize=%d, timeo=%d, " 492 "retrans=%d, maxgrouplist=%d, readahead=%d, leaseterm=%d, " 493 "deadthresh=%d\n", 494 nfsargsp->sotype, 495 nfsargsp->proto, 496 nfsargsp->fhsize, 497 fbuf, 498 nfsargsp->wsize, 499 nfsargsp->rsize, 500 nfsargsp->readdirsize, 501 nfsargsp->timeo, 502 nfsargsp->retrans, 503 nfsargsp->maxgrouplist, 504 nfsargsp->readahead, 505 nfsargsp->leaseterm, 506 nfsargsp->deadthresh); 507 } 508 509 static void 510 usage(void) 511 { 512 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n%s\n", 513 "[-23bCcdilPpqsTUX] [-a maxreadahead] [-D deadthresh]", 514 "\t[-g maxgroups] [-I readdirsize] [-L leaseterm]", 515 "\t[-o options] [-R retrycnt] [-r readsize] [-t timeout]", 516 "\t[-w writesize] [-x retrans]", 517 "\trhost:path node"); 518 exit(1); 519 } 520
Indexes created Tue Sep 30 17:09:57 GMT 2025