mount_nfs.c revision 1.69.8.1
1 /* $NetBSD: mount_nfs.c,v 1.69.8.1 2013/06/23 06:28:51 tls 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 1.69.8.1 2013/06/23 06:28:51 tls 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 #include <nfs/rpcv2.h> 56 #include <nfs/nfsproto.h> 57 #include <nfs/nfs.h> 58 #include <nfs/nfsmount.h> 59 60 #include <arpa/inet.h> 61 62 #include <err.h> 63 #include <errno.h> 64 #include <fcntl.h> 65 #include <netdb.h> 66 #include <signal.h> 67 #include <stdio.h> 68 #include <stdlib.h> 69 #include <string.h> 70 #include <unistd.h> 71 #include <util.h> 72 73 #include <mntopts.h> 74 75 #include "mountprog.h" 76 #include "mount_nfs.h" 77 78 #define ALTF_BG 0x00000001 79 #define ALTF_CONN 0x00000002 80 #define ALTF_DUMBTIMR 0x00000004 81 #define ALTF_INTR 0x00000008 82 #define ALTF_NFSV3 0x00000020 83 #define ALTF_RDIRPLUS 0x00000040 84 #define ALTF_MNTUDP 0x00000080 85 #define ALTF_NORESPORT 0x00000100 86 #define ALTF_SEQPACKET 0x00000200 87 #define ALTF_NQNFS 0x00000400 88 #define ALTF_SOFT 0x00000800 89 #define ALTF_TCP 0x00001000 90 #define ALTF_NFSV2 0x00002000 91 #define ALTF_PORT 0x00004000 92 #define ALTF_RSIZE 0x00008000 93 #define ALTF_WSIZE 0x00010000 94 #define ALTF_RDIRSIZE 0x00020000 95 #define ALTF_MAXGRPS 0x00040000 96 #define ALTF_LEASETERM 0x00080000 97 #define ALTF_READAHEAD 0x00100000 98 #define ALTF_DEADTHRESH 0x00200000 99 #define ALTF_TIMEO 0x00400000 100 #define ALTF_RETRANS 0x00800000 101 102 static const struct mntopt mopts[] = { 103 MOPT_STDOPTS, 104 MOPT_FORCE, 105 MOPT_UPDATE, 106 MOPT_GETARGS, 107 { "bg", 0, ALTF_BG, 1 }, 108 { "conn", 0, ALTF_CONN, 1 }, 109 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 110 { "intr", 0, ALTF_INTR, 1 }, 111 { "nfsv3", 0, ALTF_NFSV3, 1 }, 112 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 113 { "mntudp", 0, ALTF_MNTUDP, 1 }, 114 { "resport", 1, ALTF_NORESPORT, 1 }, 115 { "nqnfs", 0, ALTF_NQNFS, 1 }, 116 { "soft", 0, ALTF_SOFT, 1 }, 117 { "tcp", 0, ALTF_TCP, 1 }, 118 { "nfsv2", 0, ALTF_NFSV2, 1 }, 119 { "port", 0, ALTF_PORT, 1 }, 120 { "rsize", 0, ALTF_RSIZE, 1 }, 121 { "wsize", 0, ALTF_WSIZE, 1 }, 122 { "rdirsize", 0, ALTF_RDIRSIZE, 1 }, 123 { "maxgrps", 0, ALTF_MAXGRPS, 1 }, 124 { "leaseterm", 0, ALTF_LEASETERM, 1 }, 125 { "readahead", 0, ALTF_READAHEAD, 1 }, 126 { "deadthresh", 0, ALTF_DEADTHRESH, 1 }, 127 { "timeo", 0, ALTF_TIMEO, 1 }, 128 MOPT_NULL, 129 130 }; 131 132 struct nfs_args nfsdefargs = { 133 .version = NFS_ARGSVERSION, 134 .addr = NULL, 135 .addrlen = sizeof(struct sockaddr_in), 136 .sotype = SOCK_DGRAM, 137 .proto = 0, 138 .fh = NULL, 139 .fhsize = 0, 140 .flags = NFSMNT_NFSV3|NFSMNT_NOCONN|NFSMNT_RESVPORT, 141 .wsize = NFS_WSIZE, 142 .rsize = NFS_RSIZE, 143 .readdirsize = NFS_READDIRSIZE, 144 .timeo = 10, 145 .retrans = NFS_RETRANS, 146 .maxgrouplist = NFS_MAXGRPS, 147 .readahead = NFS_DEFRAHEAD, 148 .leaseterm = 0, /* Ignored; lease term */ 149 .deadthresh = NFS_DEFDEADTHRESH, 150 .hostname = NULL, 151 }; 152 153 #define DEF_RETRY 10000 154 155 int retrycnt = DEF_RETRY; 156 int opflags = 0; 157 int force2 = 0; 158 int force3 = 0; 159 int mnttcp_ok = 1; 160 int port = 0; 161 162 static void shownfsargs(const struct nfs_args *); 163 int mount_nfs(int argc, char **argv); 164 /* void set_rpc_maxgrouplist(int); */ 165 __dead static void usage(void); 166 167 #ifndef MOUNT_NOMAIN 168 int 169 main(int argc, char **argv) 170 { 171 172 setprogname(argv[0]); 173 return mount_nfs(argc, argv); 174 } 175 #endif 176 177 void 178 mount_nfs_dogetargs(struct nfs_args *nfsargsp, int mntflags, const char *spec) 179 { 180 static struct sockaddr_storage sa; 181 char *tspec; 182 183 if ((mntflags & MNT_GETARGS) != 0) { 184 memset(&sa, 0, sizeof(sa)); 185 nfsargsp->addr = (struct sockaddr *)&sa; 186 nfsargsp->addrlen = sizeof(sa); 187 } else { 188 if ((tspec = strdup(spec)) == NULL) { 189 err(1, "strdup"); 190 } 191 if (!getnfsargs(tspec, nfsargsp)) { 192 exit(1); 193 } 194 free(tspec); 195 } 196 } 197 198 void 199 mount_nfs_parseargs(int argc, char *argv[], 200 struct nfs_args *nfsargsp, int *mntflags, 201 char *spec, char *name) 202 { 203 char *p; 204 int altflags, num; 205 int c; 206 mntoptparse_t mp; 207 208 *mntflags = 0; 209 altflags = 0; 210 memset(nfsargsp, 0, sizeof(*nfsargsp)); 211 *nfsargsp = nfsdefargs; 212 while ((c = getopt(argc, argv, 213 "23a:bcCdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:UX")) != -1) 214 switch (c) { 215 case '3': 216 case 'q': 217 if (force2) 218 errx(1, "conflicting version options"); 219 force3 = 1; 220 break; 221 case '2': 222 if (force3) 223 errx(1, "conflicting version options"); 224 force2 = 1; 225 nfsargsp->flags &= ~NFSMNT_NFSV3; 226 break; 227 case 'a': 228 num = strtol(optarg, &p, 10); 229 if (*p || num < 0) 230 errx(1, "illegal -a value -- %s", optarg); 231 nfsargsp->readahead = num; 232 nfsargsp->flags |= NFSMNT_READAHEAD; 233 break; 234 case 'b': 235 opflags |= BGRND; 236 break; 237 case 'c': 238 nfsargsp->flags |= NFSMNT_NOCONN; 239 break; 240 case 'C': 241 nfsargsp->flags &= ~NFSMNT_NOCONN; 242 break; 243 case 'D': 244 num = strtol(optarg, &p, 10); 245 if (*p || num <= 0) 246 errx(1, "illegal -D value -- %s", optarg); 247 nfsargsp->deadthresh = num; 248 nfsargsp->flags |= NFSMNT_DEADTHRESH; 249 break; 250 case 'd': 251 nfsargsp->flags |= NFSMNT_DUMBTIMR; 252 break; 253 #if 0 /* XXXX */ 254 case 'g': 255 num = strtol(optarg, &p, 10); 256 if (*p || num <= 0) 257 errx(1, "illegal -g value -- %s", optarg); 258 set_rpc_maxgrouplist(num); 259 nfsargsp->maxgrouplist = num; 260 nfsargsp->flags |= NFSMNT_MAXGRPS; 261 break; 262 #endif 263 case 'I': 264 num = strtol(optarg, &p, 10); 265 if (*p || num <= 0) 266 errx(1, "illegal -I value -- %s", optarg); 267 nfsargsp->readdirsize = num; 268 nfsargsp->flags |= NFSMNT_READDIRSIZE; 269 break; 270 case 'i': 271 nfsargsp->flags |= NFSMNT_INT; 272 break; 273 case 'L': 274 /* ignore */ 275 break; 276 case 'l': 277 nfsargsp->flags |= NFSMNT_RDIRPLUS; 278 break; 279 case 'o': 280 mp = getmntopts(optarg, mopts, mntflags, &altflags); 281 if (mp == NULL) 282 err(1, "getmntopts"); 283 if (altflags & ALTF_BG) 284 opflags |= BGRND; 285 if (altflags & ALTF_CONN) 286 nfsargsp->flags &= ~NFSMNT_NOCONN; 287 if (altflags & ALTF_DUMBTIMR) 288 nfsargsp->flags |= NFSMNT_DUMBTIMR; 289 if (altflags & ALTF_INTR) 290 nfsargsp->flags |= NFSMNT_INT; 291 if (altflags & (ALTF_NFSV3|ALTF_NQNFS)) { 292 if (force2) 293 errx(1, "conflicting version options"); 294 force3 = 1; 295 } 296 if (altflags & ALTF_NFSV2) { 297 if (force3) 298 errx(1, "conflicting version options"); 299 force2 = 1; 300 nfsargsp->flags &= ~NFSMNT_NFSV3; 301 } 302 if (altflags & ALTF_RDIRPLUS) 303 nfsargsp->flags |= NFSMNT_RDIRPLUS; 304 if (altflags & ALTF_MNTUDP) 305 mnttcp_ok = 0; 306 if (altflags & ALTF_NORESPORT) 307 nfsargsp->flags &= ~NFSMNT_RESVPORT; 308 if (altflags & ALTF_SOFT) 309 nfsargsp->flags |= NFSMNT_SOFT; 310 if (altflags & ALTF_TCP) { 311 nfsargsp->sotype = SOCK_STREAM; 312 } 313 if (altflags & ALTF_PORT) { 314 port = getmntoptnum(mp, "port"); 315 } 316 if (altflags & ALTF_RSIZE) { 317 nfsargsp->rsize = 318 (int)getmntoptnum(mp, "rsize"); 319 nfsargsp->flags |= NFSMNT_RSIZE; 320 } 321 if (altflags & ALTF_WSIZE) { 322 nfsargsp->wsize = 323 (int)getmntoptnum(mp, "wsize"); 324 nfsargsp->flags |= NFSMNT_WSIZE; 325 } 326 if (altflags & ALTF_RDIRSIZE) { 327 nfsargsp->rsize = 328 (int)getmntoptnum(mp, "rdirsize"); 329 nfsargsp->flags |= NFSMNT_READDIRSIZE; 330 } 331 #if 0 332 if (altflags & ALTF_MAXGRPS) { 333 set_rpc_maxgrouplist(num); 334 nfsargsp->maxgrouplist = 335 (int)getmntoptnum(mp, "maxgrps"); 336 nfsargsp->flags |= NFSMNT_MAXGRPS; 337 } 338 #endif 339 if (altflags & ALTF_LEASETERM) { 340 nfsargsp->leaseterm = 341 (int)getmntoptnum(mp, "leaseterm"); 342 nfsargsp->flags |= NFSMNT_LEASETERM; 343 } 344 if (altflags & ALTF_READAHEAD) { 345 nfsargsp->readahead = 346 (int)getmntoptnum(mp, "readahead"); 347 nfsargsp->flags |= NFSMNT_READAHEAD; 348 } 349 if (altflags & ALTF_DEADTHRESH) { 350 nfsargsp->deadthresh = 351 (int)getmntoptnum(mp, "deadthresh"); 352 nfsargsp->flags |= NFSMNT_DEADTHRESH; 353 } 354 if (altflags & ALTF_TIMEO) { 355 nfsargsp->timeo = 356 (int)getmntoptnum(mp, "timeo"); 357 nfsargsp->flags |= NFSMNT_TIMEO; 358 } 359 if (altflags & ALTF_RETRANS) { 360 nfsargsp->retrans = 361 (int)getmntoptnum(mp, "retrans"); 362 nfsargsp->flags |= NFSMNT_RETRANS; 363 } 364 altflags = 0; 365 freemntopts(mp); 366 break; 367 case 'P': 368 nfsargsp->flags |= NFSMNT_RESVPORT; 369 break; 370 case 'p': 371 nfsargsp->flags &= ~NFSMNT_RESVPORT; 372 break; 373 case 'R': 374 num = strtol(optarg, &p, 10); 375 if (*p || num <= 0) 376 errx(1, "illegal -R value -- %s", optarg); 377 retrycnt = num; 378 break; 379 case 'r': 380 num = strtol(optarg, &p, 10); 381 if (*p || num <= 0) 382 errx(1, "illegal -r value -- %s", optarg); 383 nfsargsp->rsize = num; 384 nfsargsp->flags |= NFSMNT_RSIZE; 385 break; 386 case 's': 387 nfsargsp->flags |= NFSMNT_SOFT; 388 break; 389 case 'T': 390 nfsargsp->sotype = SOCK_STREAM; 391 break; 392 case 't': 393 num = strtol(optarg, &p, 10); 394 if (*p || num <= 0) 395 errx(1, "illegal -t value -- %s", optarg); 396 nfsargsp->timeo = num; 397 nfsargsp->flags |= NFSMNT_TIMEO; 398 break; 399 case 'w': 400 num = strtol(optarg, &p, 10); 401 if (*p || num <= 0) 402 errx(1, "illegal -w value -- %s", optarg); 403 nfsargsp->wsize = num; 404 nfsargsp->flags |= NFSMNT_WSIZE; 405 break; 406 case 'x': 407 num = strtol(optarg, &p, 10); 408 if (*p || num <= 0) 409 errx(1, "illegal -x value -- %s", optarg); 410 nfsargsp->retrans = num; 411 nfsargsp->flags |= NFSMNT_RETRANS; 412 break; 413 case 'X': 414 nfsargsp->flags |= NFSMNT_XLATECOOKIE; 415 break; 416 case 'U': 417 mnttcp_ok = 0; 418 break; 419 default: 420 usage(); 421 break; 422 } 423 argc -= optind; 424 argv += optind; 425 426 if (argc != 2) 427 usage(); 428 429 strlcpy(spec, *argv++, MAXPATHLEN); 430 pathadj(*argv, name); 431 mount_nfs_dogetargs(nfsargsp, *mntflags, spec); 432 } 433 434 int 435 mount_nfs(int argc, char *argv[]) 436 { 437 char spec[MAXPATHLEN], name[MAXPATHLEN]; 438 struct nfs_args args; 439 int mntflags; 440 int retval; 441 442 mount_nfs_parseargs(argc, argv, &args, &mntflags, spec, name); 443 444 retry: 445 if ((retval = mount(MOUNT_NFS, name, mntflags, 446 &args, sizeof args)) == -1) { 447 /* Did we just default to v3 on a v2-only kernel? 448 * If so, default to v2 & try again */ 449 if (errno == EPROGMISMATCH && 450 (args.flags & NFSMNT_NFSV3) != 0 && !force3) { 451 /* 452 * fall back to v2. XXX lack of V3 umount. 453 */ 454 args.flags &= ~NFSMNT_NFSV3; 455 mount_nfs_dogetargs(&args, mntflags, spec); 456 goto retry; 457 } 458 } 459 if (retval == -1) 460 err(1, "%s on %s", spec, name); 461 if (mntflags & MNT_GETARGS) { 462 shownfsargs(&args); 463 return (0); 464 } 465 466 exit(0); 467 } 468 469 static void 470 shownfsargs(const struct nfs_args *nfsargsp) 471 { 472 char fbuf[2048]; 473 char host[NI_MAXHOST], serv[NI_MAXSERV]; 474 int error; 475 476 (void)snprintb(fbuf, sizeof(fbuf), NFSMNT_BITS, nfsargsp->flags); 477 if (nfsargsp->addr != NULL) { 478 error = getnameinfo(nfsargsp->addr, nfsargsp->addrlen, host, 479 sizeof(host), serv, sizeof(serv), 480 NI_NUMERICHOST | NI_NUMERICSERV); 481 if (error != 0) 482 warnx("getnameinfo: %s", gai_strerror(error)); 483 } else 484 error = -1; 485 486 if (error == 0) 487 printf("addr=%s, port=%s, addrlen=%d, ", 488 host, serv, nfsargsp->addrlen); 489 printf("sotype=%d, proto=%d, fhsize=%d, " 490 "flags=%s, wsize=%d, rsize=%d, readdirsize=%d, timeo=%d, " 491 "retrans=%d, maxgrouplist=%d, readahead=%d, leaseterm=%d, " 492 "deadthresh=%d\n", 493 nfsargsp->sotype, 494 nfsargsp->proto, 495 nfsargsp->fhsize, 496 fbuf, 497 nfsargsp->wsize, 498 nfsargsp->rsize, 499 nfsargsp->readdirsize, 500 nfsargsp->timeo, 501 nfsargsp->retrans, 502 nfsargsp->maxgrouplist, 503 nfsargsp->readahead, 504 nfsargsp->leaseterm, 505 nfsargsp->deadthresh); 506 } 507 508 static void 509 usage(void) 510 { 511 (void)fprintf(stderr, "usage: %s %s\n%s\n%s\n%s\n%s\n", getprogname(), 512 "[-23bCcdilPpqsTUX] [-a maxreadahead] [-D deadthresh]", 513 "\t[-g maxgroups] [-I readdirsize] [-L leaseterm]", 514 "\t[-o options] [-R retrycnt] [-r readsize] [-t timeout]", 515 "\t[-w writesize] [-x retrans]", 516 "\trhost:path node"); 517 exit(1); 518 } 519
Indexes created Wed Oct 15 16:09:53 GMT 2025