mount_nfs.c revision 1.35
1 /* $NetBSD: mount_nfs.c,v 1.35 2002/10/01 03:08:56 itojun 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 __COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\n\ 42 The Regents of the University of California. All rights reserved.\n"); 43 #endif /* not lint */ 44 45 #ifndef lint 46 #if 0 47 static char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95"; 48 #else 49 __RCSID("$NetBSD: mount_nfs.c,v 1.35 2002/10/01 03:08:56 itojun Exp $"); 50 #endif 51 #endif /* not lint */ 52 53 #include <sys/param.h> 54 #include <sys/mount.h> 55 #include <sys/socket.h> 56 #include <sys/stat.h> 57 #include <syslog.h> 58 59 #include <rpc/rpc.h> 60 #include <rpc/pmap_clnt.h> 61 #include <rpc/pmap_prot.h> 62 63 #ifdef ISO 64 #include <netiso/iso.h> 65 #endif 66 67 #ifdef NFSKERB 68 #include <kerberosIV/des.h> 69 #include <kerberosIV/krb.h> 70 #endif 71 72 #include <nfs/rpcv2.h> 73 #include <nfs/nfsproto.h> 74 #define _KERNEL 75 #include <nfs/nfs.h> 76 #undef _KERNEL 77 #include <nfs/nqnfs.h> 78 #include <nfs/nfsmount.h> 79 80 #include <arpa/inet.h> 81 82 #include <ctype.h> 83 #include <err.h> 84 #include <errno.h> 85 #include <fcntl.h> 86 #include <netdb.h> 87 #include <signal.h> 88 #include <stdio.h> 89 #include <stdlib.h> 90 #include <string.h> 91 #include <unistd.h> 92 #include <util.h> 93 94 #include "mntopts.h" 95 96 #define ALTF_BG 0x1 97 #define ALTF_CONN 0x2 98 #define ALTF_DUMBTIMR 0x4 99 #define ALTF_INTR 0x8 100 #define ALTF_KERB 0x10 101 #define ALTF_NFSV3 0x20 102 #define ALTF_RDIRPLUS 0x40 103 #define ALTF_MNTUDP 0x80 104 #define ALTF_NORESPORT 0x100 105 #define ALTF_SEQPACKET 0x200 106 #define ALTF_NQNFS 0x400 107 #define ALTF_SOFT 0x800 108 #define ALTF_TCP 0x1000 109 #define ALTF_NFSV2 0x2000 110 111 static const struct mntopt mopts[] = { 112 MOPT_STDOPTS, 113 MOPT_FORCE, 114 MOPT_UPDATE, 115 MOPT_GETARGS, 116 { "bg", 0, ALTF_BG, 1 }, 117 { "conn", 0, ALTF_CONN, 1 }, 118 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 119 { "intr", 0, ALTF_INTR, 1 }, 120 #ifdef NFSKERB 121 { "kerb", 0, ALTF_KERB, 1 }, 122 #endif 123 { "nfsv3", 0, ALTF_NFSV3, 1 }, 124 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 125 { "mntudp", 0, ALTF_MNTUDP, 1 }, 126 { "noresport", 0, ALTF_NORESPORT, 1 }, 127 #ifdef ISO 128 { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 129 #endif 130 { "nqnfs", 0, ALTF_NQNFS, 1 }, 131 { "soft", 0, ALTF_SOFT, 1 }, 132 { "tcp", 0, ALTF_TCP, 1 }, 133 { "nfsv2", 0, ALTF_NFSV2, 1 }, 134 { NULL } 135 }; 136 137 struct nfs_args nfsdefargs = { 138 NFS_ARGSVERSION, 139 (struct sockaddr *)0, 140 sizeof (struct sockaddr_in), 141 SOCK_DGRAM, 142 0, 143 (u_char *)0, 144 0, 145 NFSMNT_NFSV3|NFSMNT_NOCONN|NFSMNT_RESVPORT, 146 NFS_WSIZE, 147 NFS_RSIZE, 148 NFS_READDIRSIZE, 149 10, 150 NFS_RETRANS, 151 NFS_MAXGRPS, 152 NFS_DEFRAHEAD, 153 NQ_DEFLEASE, 154 NQ_DEADTHRESH, 155 (char *)0, 156 }; 157 158 struct nfhret { 159 u_long stat; 160 long vers; 161 long auth; 162 long fhsize; 163 u_char nfh[NFSX_V3FHMAX]; 164 }; 165 #define DEF_RETRY 10000 166 #define BGRND 1 167 #define ISBGRND 2 168 int retrycnt; 169 int opflags = 0; 170 int nfsproto = IPPROTO_UDP; 171 int force2 = 0; 172 int force3 = 0; 173 int mnttcp_ok = 1; 174 175 #ifdef NFSKERB 176 static char inst[INST_SZ]; 177 static char realm[REALM_SZ]; 178 static struct { 179 u_long kind; 180 KTEXT_ST kt; 181 } ktick; 182 static struct nfsrpc_nickverf kverf; 183 static struct nfsrpc_fullblock kin, kout; 184 static NFSKERBKEY_T kivec; 185 static CREDENTIALS kcr; 186 static struct timeval ktv; 187 static NFSKERBKEYSCHED_T kerb_keysched; 188 #endif 189 190 static void shownfsargs __P((const struct nfs_args *)); 191 static int getnfsargs __P((char *, struct nfs_args *)); 192 #ifdef ISO 193 static struct iso_addr *iso_addr __P((const char *)); 194 #endif 195 int main __P((int, char *[])); 196 int mount_nfs __P((int argc, char **argv)); 197 /* void set_rpc_maxgrouplist __P((int)); */ 198 static void usage __P((void)); 199 static int xdr_dir __P((XDR *, char *)); 200 static int xdr_fh __P((XDR *, struct nfhret *)); 201 202 #ifndef MOUNT_NOMAIN 203 int 204 main(argc, argv) 205 int argc; 206 char **argv; 207 { 208 return mount_nfs(argc, argv); 209 } 210 #endif 211 212 int 213 mount_nfs(argc, argv) 214 int argc; 215 char *argv[]; 216 { 217 int c, retval; 218 struct nfs_args *nfsargsp; 219 struct nfs_args nfsargs; 220 struct nfsd_cargs ncd; 221 int mntflags, altflags, i, nfssvc_flag, num; 222 char *name, *p, *spec, *ospec; 223 #ifdef NFSKERB 224 uid_t last_ruid; 225 226 last_ruid = -1; 227 if (krb_get_lrealm(realm, 0) != KSUCCESS) 228 (void)strcpy(realm, KRB_REALM); 229 if (sizeof (struct nfsrpc_nickverf) != RPCX_NICKVERF || 230 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK || 231 ((char *)&ktick.kt) - ((char *)&ktick) != NFSX_UNSIGNED || 232 ((char *)ktick.kt.dat) - ((char *)&ktick) != 2 * NFSX_UNSIGNED) 233 warnx("Yikes! NFSKERB structs not packed!!\n"); 234 #endif 235 retrycnt = DEF_RETRY; 236 237 mntflags = 0; 238 altflags = 0; 239 nfsargs = nfsdefargs; 240 nfsargsp = &nfsargs; 241 while ((c = getopt(argc, argv, 242 "23a:bcCdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:UX")) != -1) 243 switch (c) { 244 case '3': 245 if (force2) 246 errx(1, "-2 and -3 are mutually exclusive"); 247 force3 = 1; 248 break; 249 case '2': 250 if (force3) 251 errx(1, "-2 and -3 are mutually exclusive"); 252 force2 = 1; 253 nfsargsp->flags &= ~NFSMNT_NFSV3; 254 break; 255 case 'a': 256 num = strtol(optarg, &p, 10); 257 if (*p || num < 0) 258 errx(1, "illegal -a value -- %s", optarg); 259 nfsargsp->readahead = num; 260 nfsargsp->flags |= NFSMNT_READAHEAD; 261 break; 262 case 'b': 263 opflags |= BGRND; 264 break; 265 case 'c': 266 nfsargsp->flags |= NFSMNT_NOCONN; 267 break; 268 case 'C': 269 nfsargsp->flags &= ~NFSMNT_NOCONN; 270 break; 271 case 'D': 272 num = strtol(optarg, &p, 10); 273 if (*p || num <= 0) 274 errx(1, "illegal -D value -- %s", optarg); 275 nfsargsp->deadthresh = num; 276 nfsargsp->flags |= NFSMNT_DEADTHRESH; 277 break; 278 case 'd': 279 nfsargsp->flags |= NFSMNT_DUMBTIMR; 280 break; 281 #if 0 /* XXXX */ 282 case 'g': 283 num = strtol(optarg, &p, 10); 284 if (*p || num <= 0) 285 errx(1, "illegal -g value -- %s", optarg); 286 set_rpc_maxgrouplist(num); 287 nfsargsp->maxgrouplist = num; 288 nfsargsp->flags |= NFSMNT_MAXGRPS; 289 break; 290 #endif 291 case 'I': 292 num = strtol(optarg, &p, 10); 293 if (*p || num <= 0) 294 errx(1, "illegal -I value -- %s", optarg); 295 nfsargsp->readdirsize = num; 296 nfsargsp->flags |= NFSMNT_READDIRSIZE; 297 break; 298 case 'i': 299 nfsargsp->flags |= NFSMNT_INT; 300 break; 301 #ifdef NFSKERB 302 case 'K': 303 nfsargsp->flags |= NFSMNT_KERB; 304 break; 305 #endif 306 case 'L': 307 num = strtol(optarg, &p, 10); 308 if (*p || num < 2) 309 errx(1, "illegal -L value -- %s", optarg); 310 nfsargsp->leaseterm = num; 311 nfsargsp->flags |= NFSMNT_LEASETERM; 312 break; 313 case 'l': 314 nfsargsp->flags |= NFSMNT_RDIRPLUS; 315 break; 316 #ifdef NFSKERB 317 case 'm': 318 (void)strncpy(realm, optarg, REALM_SZ - 1); 319 realm[REALM_SZ - 1] = '\0'; 320 break; 321 #endif 322 case 'o': 323 getmntopts(optarg, mopts, &mntflags, &altflags); 324 if (altflags & ALTF_BG) 325 opflags |= BGRND; 326 if (altflags & ALTF_CONN) 327 nfsargsp->flags &= ~NFSMNT_NOCONN; 328 if (altflags & ALTF_DUMBTIMR) 329 nfsargsp->flags |= NFSMNT_DUMBTIMR; 330 if (altflags & ALTF_INTR) 331 nfsargsp->flags |= NFSMNT_INT; 332 #ifdef NFSKERB 333 if (altflags & ALTF_KERB) 334 nfsargsp->flags |= NFSMNT_KERB; 335 #endif 336 if (altflags & ALTF_NFSV3) { 337 if (force2) 338 errx(1, "conflicting version options"); 339 force3 = 1; 340 } 341 if (altflags & ALTF_NFSV2) { 342 if (force3) 343 errx(1, "conflicting version options"); 344 force2 = 1; 345 nfsargsp->flags &= ~NFSMNT_NFSV3; 346 } 347 if (altflags & ALTF_RDIRPLUS) 348 nfsargsp->flags |= NFSMNT_RDIRPLUS; 349 if (altflags & ALTF_MNTUDP) 350 mnttcp_ok = 0; 351 if (altflags & ALTF_NORESPORT) 352 nfsargsp->flags &= ~NFSMNT_RESVPORT; 353 #ifdef ISO 354 if (altflags & ALTF_SEQPACKET) 355 nfsargsp->sotype = SOCK_SEQPACKET; 356 #endif 357 if (altflags & ALTF_NQNFS) { 358 if (force2) 359 errx(1, "nqnfs only available with v3"); 360 force3 = 1; 361 nfsargsp->flags |= NFSMNT_NQNFS; 362 } 363 if (altflags & ALTF_SOFT) 364 nfsargsp->flags |= NFSMNT_SOFT; 365 if (altflags & ALTF_TCP) { 366 nfsargsp->sotype = SOCK_STREAM; 367 nfsproto = IPPROTO_TCP; 368 } 369 altflags = 0; 370 break; 371 case 'P': 372 nfsargsp->flags |= NFSMNT_RESVPORT; 373 break; 374 case 'p': 375 nfsargsp->flags &= ~NFSMNT_RESVPORT; 376 break; 377 case 'q': 378 if (force2) 379 errx(1, "nqnfs only available with v3"); 380 force3 = 1; 381 nfsargsp->flags |= NFSMNT_NQNFS; 382 break; 383 case 'R': 384 num = strtol(optarg, &p, 10); 385 if (*p || num <= 0) 386 errx(1, "illegal -R value -- %s", optarg); 387 retrycnt = num; 388 break; 389 case 'r': 390 num = strtol(optarg, &p, 10); 391 if (*p || num <= 0) 392 errx(1, "illegal -r value -- %s", optarg); 393 nfsargsp->rsize = num; 394 nfsargsp->flags |= NFSMNT_RSIZE; 395 break; 396 #ifdef ISO 397 case 'S': 398 nfsargsp->sotype = SOCK_SEQPACKET; 399 break; 400 #endif 401 case 's': 402 nfsargsp->flags |= NFSMNT_SOFT; 403 break; 404 case 'T': 405 nfsargsp->sotype = SOCK_STREAM; 406 nfsproto = IPPROTO_TCP; 407 break; 408 case 't': 409 num = strtol(optarg, &p, 10); 410 if (*p || num <= 0) 411 errx(1, "illegal -t value -- %s", optarg); 412 nfsargsp->timeo = num; 413 nfsargsp->flags |= NFSMNT_TIMEO; 414 break; 415 case 'w': 416 num = strtol(optarg, &p, 10); 417 if (*p || num <= 0) 418 errx(1, "illegal -w value -- %s", optarg); 419 nfsargsp->wsize = num; 420 nfsargsp->flags |= NFSMNT_WSIZE; 421 break; 422 case 'x': 423 num = strtol(optarg, &p, 10); 424 if (*p || num <= 0) 425 errx(1, "illegal -x value -- %s", optarg); 426 nfsargsp->retrans = num; 427 nfsargsp->flags |= NFSMNT_RETRANS; 428 break; 429 case 'X': 430 nfsargsp->flags |= NFSMNT_XLATECOOKIE; 431 break; 432 case 'U': 433 mnttcp_ok = 0; 434 break; 435 default: 436 usage(); 437 break; 438 } 439 argc -= optind; 440 argv += optind; 441 442 if (argc != 2) 443 usage(); 444 445 spec = *argv++; 446 name = *argv; 447 if ((ospec = strdup(spec)) == NULL) { 448 err(1, "strdup"); 449 } 450 451 if ((mntflags & MNT_GETARGS) == 0) { 452 if (!getnfsargs(spec, nfsargsp)) 453 exit(1); 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) && !force3) { 459 nfsargsp->flags &= ~NFSMNT_NFSV3; 460 retval = mount(MOUNT_NFS, name, mntflags, nfsargsp); 461 } 462 } 463 if (retval) 464 err(1, "%s on %s", ospec, name); 465 if (mntflags & MNT_GETARGS) { 466 shownfsargs(nfsargsp); 467 return 0; 468 } 469 470 if (nfsargsp->flags & (NFSMNT_NQNFS | 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 #ifdef NFSKERB 494 /* 495 * Set up as ncd_authuid for the kerberos call. 496 * Must set ruid to ncd_authuid and reset the 497 * ticket name iff ncd_authuid is not the same 498 * as last time, so that the right ticket file 499 * is found. 500 * Get the Kerberos credential structure so that 501 * we have the seesion key and get a ticket for 502 * this uid. 503 * For more info see the IETF Draft "Authentication 504 * in ONC RPC". 505 */ 506 if (ncd.ncd_authuid != last_ruid) { 507 krb_set_tkt_string(""); 508 last_ruid = ncd.ncd_authuid; 509 } 510 setreuid(ncd.ncd_authuid, 0); 511 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 512 if (kret == RET_NOTKT) { 513 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 514 DEFAULT_TKT_LIFE); 515 if (kret == KSUCCESS) 516 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 517 &kcr); 518 } 519 if (kret == KSUCCESS) 520 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 521 realm, 0); 522 523 /* 524 * Fill in the AKN_FULLNAME authenticator and verfier. 525 * Along with the Kerberos ticket, we need to build 526 * the timestamp verifier and encrypt it in CBC mode. 527 */ 528 if (kret == KSUCCESS && 529 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 530 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 531 ncd.ncd_authtype = RPCAUTH_KERB4; 532 ncd.ncd_authstr = (u_char *)&ktick; 533 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 534 3 * NFSX_UNSIGNED; 535 ncd.ncd_verfstr = (u_char *)&kverf; 536 ncd.ncd_verflen = sizeof (kverf); 537 memmove(ncd.ncd_key, kcr.session, 538 sizeof (kcr.session)); 539 kin.t1 = htonl(ktv.tv_sec); 540 kin.t2 = htonl(ktv.tv_usec); 541 kin.w1 = htonl(NFS_KERBTTL); 542 kin.w2 = htonl(NFS_KERBTTL - 1); 543 memset((caddr_t)kivec, 0, sizeof (kivec)); 544 545 /* 546 * Encrypt kin in CBC mode using the session 547 * key in kcr. 548 */ 549 XXX 550 551 /* 552 * Finally, fill the timestamp verifier into the 553 * authenticator and verifier. 554 */ 555 ktick.kind = htonl(RPCAKN_FULLNAME); 556 kverf.kind = htonl(RPCAKN_FULLNAME); 557 NFS_KERBW1(ktick.kt) = kout.w1; 558 ktick.kt.length = htonl(ktick.kt.length); 559 kverf.verf.t1 = kout.t1; 560 kverf.verf.t2 = kout.t2; 561 kverf.verf.w2 = kout.w2; 562 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 563 } 564 setreuid(0, 0); 565 #endif /* NFSKERB */ 566 } 567 } 568 exit(0); 569 } 570 571 static void 572 shownfsargs(nfsargsp) 573 const struct nfs_args *nfsargsp; 574 { 575 char fbuf[2048]; 576 577 (void)snprintb(fbuf, sizeof(fbuf), NFSMNT_BITS, nfsargsp->flags); 578 printf("version=%d, addrlen=%d, sotype=%d, proto=%d, fhsize=%d, " 579 "flags=%s, wsize=%d, rsize=%d, readdirsize=%d, timeo=%d, " 580 "retrans=%d, maxgrouplist=%d, readahead=%d, leaseterm=%d, " 581 "deadthresh=%d\n", 582 nfsargsp->version, 583 nfsargsp->addrlen, 584 nfsargsp->sotype, 585 nfsargsp->proto, 586 nfsargsp->fhsize, 587 fbuf, 588 nfsargsp->wsize, 589 nfsargsp->rsize, 590 nfsargsp->readdirsize, 591 nfsargsp->timeo, 592 nfsargsp->retrans, 593 nfsargsp->maxgrouplist, 594 nfsargsp->readahead, 595 nfsargsp->leaseterm, 596 nfsargsp->deadthresh); 597 } 598 599 static int 600 getnfsargs(spec, nfsargsp) 601 char *spec; 602 struct nfs_args *nfsargsp; 603 { 604 CLIENT *clp; 605 struct addrinfo hints, *ai_nfs, *ai; 606 int ecode; 607 char host[NI_MAXHOST], serv[NI_MAXSERV]; 608 static struct netbuf nfs_nb; 609 static struct sockaddr_storage nfs_ss; 610 struct netconfig *nconf; 611 char *netid; 612 #ifdef ISO 613 static struct sockaddr_iso isoaddr; 614 struct iso_addr *isop; 615 int isoflag = 0; 616 #endif 617 struct timeval pertry, try; 618 enum clnt_stat clnt_stat; 619 int i, nfsvers, mntvers, orgcnt; 620 char *hostp, *delimp; 621 #ifdef NFSKERB 622 char *cp; 623 #endif 624 static struct nfhret nfhret; 625 static char nam[MNAMELEN + 1]; 626 627 strncpy(nam, spec, MNAMELEN); 628 nam[MNAMELEN] = '\0'; 629 if ((delimp = strchr(spec, '@')) != NULL) { 630 hostp = delimp + 1; 631 } else if ((delimp = strrchr(spec, ':')) != NULL) { 632 hostp = spec; 633 spec = delimp + 1; 634 } else { 635 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 636 return (0); 637 } 638 *delimp = '\0'; 639 /* 640 * DUMB!! Until the mount protocol works on iso transport, we must 641 * supply both an iso and an inet address for the host. 642 */ 643 #ifdef ISO 644 if (!strncmp(hostp, "iso=", 4)) { 645 u_short isoport; 646 647 hostp += 4; 648 isoflag++; 649 if ((delimp = strchr(hostp, '+')) == NULL) { 650 warnx("no iso+inet address"); 651 return (0); 652 } 653 *delimp = '\0'; 654 if ((isop = iso_addr(hostp)) == NULL) { 655 warnx("bad ISO address"); 656 return (0); 657 } 658 memset(&isoaddr, 0, sizeof (isoaddr)); 659 memcpy(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 660 isoaddr.siso_len = sizeof (isoaddr); 661 isoaddr.siso_family = AF_ISO; 662 isoaddr.siso_tlen = 2; 663 isoport = htons(NFS_PORT); 664 memcpy(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 665 hostp = delimp + 1; 666 } 667 #endif /* ISO */ 668 669 /* 670 * Handle an internet host address and reverse resolve it if 671 * doing Kerberos. 672 */ 673 memset(&hints, 0, sizeof hints); 674 hints.ai_flags = AI_NUMERICHOST; 675 hints.ai_socktype = nfsargsp->sotype; 676 if (getaddrinfo(hostp, "nfs", &hints, &ai_nfs) == 0) { 677 if ((nfsargsp->flags & NFSMNT_KERB)) { 678 hints.ai_flags = 0; 679 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host, 680 sizeof host, serv, sizeof serv, 0) != 0) { 681 warnx("can't reverse resolve net address for " 682 "host \"%s\": %s", hostp, 683 gai_strerror(ecode)); 684 return (0); 685 } 686 hostp = host; 687 } 688 } else { 689 hints.ai_flags = 0; 690 if ((ecode = getaddrinfo(hostp, "nfs", &hints, &ai_nfs)) != 0) { 691 warnx("can't get net id for host \"%s\": %s", hostp, 692 gai_strerror(ecode)); 693 return (0); 694 } 695 } 696 #ifdef NFSKERB 697 if (nfsargsp->flags & NFSMNT_KERB) { 698 strncpy(inst, hp->h_name, INST_SZ); 699 inst[INST_SZ - 1] = '\0'; 700 if (cp = strchr(inst, '.')) 701 *cp = '\0'; 702 } 703 #endif /* NFSKERB */ 704 705 if (force2) { 706 nfsvers = NFS_VER2; 707 mntvers = RPCMNT_VER1; 708 } else { 709 nfsvers = NFS_VER3; 710 mntvers = RPCMNT_VER3; 711 } 712 orgcnt = retrycnt; 713 nfhret.stat = EACCES; /* Mark not yet successful */ 714 715 for (ai = ai_nfs; ai; ai = ai->ai_next) { 716 /* 717 * XXX. Nead a generic (family, type, proto) -> nconf interface. 718 * __rpc_*2nconf exist, maybe they should be exported. 719 */ 720 if (nfsargsp->sotype == SOCK_STREAM) { 721 if (ai->ai_family == AF_INET6) 722 netid = "tcp6"; 723 else 724 netid = "tcp"; 725 } else { 726 if (ai->ai_family == AF_INET6) 727 netid = "udp6"; 728 else 729 netid = "udp"; 730 } 731 732 nconf = getnetconfigent(netid); 733 734 tryagain: 735 retrycnt = orgcnt; 736 737 while (retrycnt > 0) { 738 nfs_nb.buf = &nfs_ss; 739 nfs_nb.maxlen = sizeof nfs_ss; 740 if (!rpcb_getaddr(RPCPROG_NFS, nfsvers, nconf, &nfs_nb, hostp)){ 741 if (rpc_createerr.cf_stat == RPC_SYSTEMERROR) { 742 nfhret.stat = rpc_createerr.cf_error.re_errno; 743 break; 744 } 745 if (rpc_createerr.cf_stat == RPC_UNKNOWNPROTO) { 746 nfhret.stat = EPROTONOSUPPORT; 747 break; 748 } 749 if ((opflags & ISBGRND) == 0) 750 clnt_pcreateerror( 751 "mount_nfs: rpcbind to nfs on server"); 752 } else { 753 pertry.tv_sec = 10; 754 pertry.tv_usec = 0; 755 /* 756 * XXX relies on clnt_tcp_create to bind to a reserved 757 * socket. 758 */ 759 clp = clnt_tp_create(hostp, RPCPROG_MNT, mntvers, 760 mnttcp_ok ? nconf : getnetconfigent("udp")); 761 if (clp == NULL) { 762 if ((opflags & ISBGRND) == 0) { 763 clnt_pcreateerror( 764 "Cannot MNT RPC (mountd)"); 765 } 766 } else { 767 CLNT_CONTROL(clp, CLSET_RETRY_TIMEOUT, 768 (char *)&pertry); 769 clp->cl_auth = authsys_create_default(); 770 try.tv_sec = 10; 771 try.tv_usec = 0; 772 if (nfsargsp->flags & NFSMNT_KERB) 773 nfhret.auth = RPCAUTH_KERB4; 774 else 775 nfhret.auth = RPCAUTH_UNIX; 776 nfhret.vers = mntvers; 777 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 778 xdr_dir, spec, xdr_fh, &nfhret, try); 779 switch (clnt_stat) { 780 case RPC_PROGVERSMISMATCH: 781 if (nfsvers == NFS_VER3 && !force3) { 782 nfsvers = NFS_VER2; 783 mntvers = RPCMNT_VER1; 784 nfsargsp->flags &= 785 ~NFSMNT_NFSV3; 786 goto tryagain; 787 } else { 788 errx(1, "%s", clnt_sperror(clp, 789 "MNT RPC")); 790 } 791 case RPC_SUCCESS: 792 auth_destroy(clp->cl_auth); 793 clnt_destroy(clp); 794 retrycnt = 0; 795 break; 796 default: 797 /* XXX should give up on some errors */ 798 if ((opflags & ISBGRND) == 0) 799 warnx("%s", clnt_sperror(clp, 800 "bad MNT RPC")); 801 break; 802 } 803 } 804 } 805 if (--retrycnt > 0) { 806 if (opflags & BGRND) { 807 opflags &= ~BGRND; 808 if ((i = fork()) != 0) { 809 if (i == -1) 810 err(1, "nqnfs 2"); 811 exit(0); 812 } 813 (void) setsid(); 814 (void) close(STDIN_FILENO); 815 (void) close(STDOUT_FILENO); 816 (void) close(STDERR_FILENO); 817 (void) chdir("/"); 818 opflags |= ISBGRND; 819 } 820 sleep(60); 821 } 822 } 823 if (nfhret.stat == 0) 824 break; 825 } 826 freeaddrinfo(ai_nfs); 827 if (nfhret.stat) { 828 if (opflags & ISBGRND) 829 exit(1); 830 errno = nfhret.stat; 831 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 832 return (0); 833 } 834 #ifdef ISO 835 if (isoflag) { 836 nfsargsp->addr = (struct sockaddr *) &isoaddr; 837 nfsargsp->addrlen = sizeof (isoaddr); 838 } else 839 #endif /* ISO */ 840 { 841 nfsargsp->addr = (struct sockaddr *) nfs_nb.buf; 842 nfsargsp->addrlen = nfs_nb.len; 843 } 844 nfsargsp->fh = nfhret.nfh; 845 nfsargsp->fhsize = nfhret.fhsize; 846 nfsargsp->hostname = nam; 847 return (1); 848 } 849 850 /* 851 * xdr routines for mount rpc's 852 */ 853 static int 854 xdr_dir(xdrsp, dirp) 855 XDR *xdrsp; 856 char *dirp; 857 { 858 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 859 } 860 861 static int 862 xdr_fh(xdrsp, np) 863 XDR *xdrsp; 864 struct nfhret *np; 865 { 866 int i; 867 long auth, authcnt, authfnd = 0; 868 869 if (!xdr_u_long(xdrsp, &np->stat)) 870 return (0); 871 if (np->stat) 872 return (1); 873 switch (np->vers) { 874 case 1: 875 np->fhsize = NFSX_V2FH; 876 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 877 case 3: 878 if (!xdr_long(xdrsp, &np->fhsize)) 879 return (0); 880 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 881 return (0); 882 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 883 return (0); 884 if (!xdr_long(xdrsp, &authcnt)) 885 return (0); 886 for (i = 0; i < authcnt; i++) { 887 if (!xdr_long(xdrsp, &auth)) 888 return (0); 889 if (auth == np->auth) 890 authfnd++; 891 } 892 /* 893 * Some servers, such as DEC's OSF/1 return a nil authenticator 894 * list to indicate RPCAUTH_UNIX. 895 */ 896 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 897 np->stat = EAUTH; 898 return (1); 899 }; 900 return (0); 901 } 902 903 static void 904 usage() 905 { 906 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n%s\n", 907 "[-23bcCdiKlpPqsTUX] [-a maxreadahead] [-D deadthresh]", 908 "\t[-g maxgroups] [-I readdirsize] [-L leaseterm] [-m realm]", 909 "\t[-o options] [-R retrycnt] [-r readsize] [-t timeout]", 910 "\t[-w writesize] [-x retrans]", 911 "\trhost:path node"); 912 exit(1); 913 } 914
Indexes created Tue Sep 30 07:10:03 GMT 2025