mount_nfs.c revision 1.36
1 /* $NetBSD: mount_nfs.c,v 1.36 2002/10/21 03:58:08 enami 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 1.36 2002/10/21 03:58:08 enami 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 struct sockaddr_storage sa; 222 int mntflags, altflags, i, nfssvc_flag, num; 223 char *name, *p, *spec, *ospec; 224 #ifdef NFSKERB 225 uid_t last_ruid; 226 227 last_ruid = -1; 228 if (krb_get_lrealm(realm, 0) != KSUCCESS) 229 (void)strcpy(realm, KRB_REALM); 230 if (sizeof (struct nfsrpc_nickverf) != RPCX_NICKVERF || 231 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK || 232 ((char *)&ktick.kt) - ((char *)&ktick) != NFSX_UNSIGNED || 233 ((char *)ktick.kt.dat) - ((char *)&ktick) != 2 * NFSX_UNSIGNED) 234 warnx("Yikes! NFSKERB structs not packed!!\n"); 235 #endif 236 retrycnt = DEF_RETRY; 237 238 mntflags = 0; 239 altflags = 0; 240 nfsargs = nfsdefargs; 241 nfsargsp = &nfsargs; 242 while ((c = getopt(argc, argv, 243 "23a:bcCdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:UX")) != -1) 244 switch (c) { 245 case '3': 246 if (force2) 247 errx(1, "-2 and -3 are mutually exclusive"); 248 force3 = 1; 249 break; 250 case '2': 251 if (force3) 252 errx(1, "-2 and -3 are mutually exclusive"); 253 force2 = 1; 254 nfsargsp->flags &= ~NFSMNT_NFSV3; 255 break; 256 case 'a': 257 num = strtol(optarg, &p, 10); 258 if (*p || num < 0) 259 errx(1, "illegal -a value -- %s", optarg); 260 nfsargsp->readahead = num; 261 nfsargsp->flags |= NFSMNT_READAHEAD; 262 break; 263 case 'b': 264 opflags |= BGRND; 265 break; 266 case 'c': 267 nfsargsp->flags |= NFSMNT_NOCONN; 268 break; 269 case 'C': 270 nfsargsp->flags &= ~NFSMNT_NOCONN; 271 break; 272 case 'D': 273 num = strtol(optarg, &p, 10); 274 if (*p || num <= 0) 275 errx(1, "illegal -D value -- %s", optarg); 276 nfsargsp->deadthresh = num; 277 nfsargsp->flags |= NFSMNT_DEADTHRESH; 278 break; 279 case 'd': 280 nfsargsp->flags |= NFSMNT_DUMBTIMR; 281 break; 282 #if 0 /* XXXX */ 283 case 'g': 284 num = strtol(optarg, &p, 10); 285 if (*p || num <= 0) 286 errx(1, "illegal -g value -- %s", optarg); 287 set_rpc_maxgrouplist(num); 288 nfsargsp->maxgrouplist = num; 289 nfsargsp->flags |= NFSMNT_MAXGRPS; 290 break; 291 #endif 292 case 'I': 293 num = strtol(optarg, &p, 10); 294 if (*p || num <= 0) 295 errx(1, "illegal -I value -- %s", optarg); 296 nfsargsp->readdirsize = num; 297 nfsargsp->flags |= NFSMNT_READDIRSIZE; 298 break; 299 case 'i': 300 nfsargsp->flags |= NFSMNT_INT; 301 break; 302 #ifdef NFSKERB 303 case 'K': 304 nfsargsp->flags |= NFSMNT_KERB; 305 break; 306 #endif 307 case 'L': 308 num = strtol(optarg, &p, 10); 309 if (*p || num < 2) 310 errx(1, "illegal -L value -- %s", optarg); 311 nfsargsp->leaseterm = num; 312 nfsargsp->flags |= NFSMNT_LEASETERM; 313 break; 314 case 'l': 315 nfsargsp->flags |= NFSMNT_RDIRPLUS; 316 break; 317 #ifdef NFSKERB 318 case 'm': 319 (void)strncpy(realm, optarg, REALM_SZ - 1); 320 realm[REALM_SZ - 1] = '\0'; 321 break; 322 #endif 323 case 'o': 324 getmntopts(optarg, mopts, &mntflags, &altflags); 325 if (altflags & ALTF_BG) 326 opflags |= BGRND; 327 if (altflags & ALTF_CONN) 328 nfsargsp->flags &= ~NFSMNT_NOCONN; 329 if (altflags & ALTF_DUMBTIMR) 330 nfsargsp->flags |= NFSMNT_DUMBTIMR; 331 if (altflags & ALTF_INTR) 332 nfsargsp->flags |= NFSMNT_INT; 333 #ifdef NFSKERB 334 if (altflags & ALTF_KERB) 335 nfsargsp->flags |= NFSMNT_KERB; 336 #endif 337 if (altflags & ALTF_NFSV3) { 338 if (force2) 339 errx(1, "conflicting version options"); 340 force3 = 1; 341 } 342 if (altflags & ALTF_NFSV2) { 343 if (force3) 344 errx(1, "conflicting version options"); 345 force2 = 1; 346 nfsargsp->flags &= ~NFSMNT_NFSV3; 347 } 348 if (altflags & ALTF_RDIRPLUS) 349 nfsargsp->flags |= NFSMNT_RDIRPLUS; 350 if (altflags & ALTF_MNTUDP) 351 mnttcp_ok = 0; 352 if (altflags & ALTF_NORESPORT) 353 nfsargsp->flags &= ~NFSMNT_RESVPORT; 354 #ifdef ISO 355 if (altflags & ALTF_SEQPACKET) 356 nfsargsp->sotype = SOCK_SEQPACKET; 357 #endif 358 if (altflags & ALTF_NQNFS) { 359 if (force2) 360 errx(1, "nqnfs only available with v3"); 361 force3 = 1; 362 nfsargsp->flags |= NFSMNT_NQNFS; 363 } 364 if (altflags & ALTF_SOFT) 365 nfsargsp->flags |= NFSMNT_SOFT; 366 if (altflags & ALTF_TCP) { 367 nfsargsp->sotype = SOCK_STREAM; 368 nfsproto = IPPROTO_TCP; 369 } 370 altflags = 0; 371 break; 372 case 'P': 373 nfsargsp->flags |= NFSMNT_RESVPORT; 374 break; 375 case 'p': 376 nfsargsp->flags &= ~NFSMNT_RESVPORT; 377 break; 378 case 'q': 379 if (force2) 380 errx(1, "nqnfs only available with v3"); 381 force3 = 1; 382 nfsargsp->flags |= NFSMNT_NQNFS; 383 break; 384 case 'R': 385 num = strtol(optarg, &p, 10); 386 if (*p || num <= 0) 387 errx(1, "illegal -R value -- %s", optarg); 388 retrycnt = num; 389 break; 390 case 'r': 391 num = strtol(optarg, &p, 10); 392 if (*p || num <= 0) 393 errx(1, "illegal -r value -- %s", optarg); 394 nfsargsp->rsize = num; 395 nfsargsp->flags |= NFSMNT_RSIZE; 396 break; 397 #ifdef ISO 398 case 'S': 399 nfsargsp->sotype = SOCK_SEQPACKET; 400 break; 401 #endif 402 case 's': 403 nfsargsp->flags |= NFSMNT_SOFT; 404 break; 405 case 'T': 406 nfsargsp->sotype = SOCK_STREAM; 407 nfsproto = IPPROTO_TCP; 408 break; 409 case 't': 410 num = strtol(optarg, &p, 10); 411 if (*p || num <= 0) 412 errx(1, "illegal -t value -- %s", optarg); 413 nfsargsp->timeo = num; 414 nfsargsp->flags |= NFSMNT_TIMEO; 415 break; 416 case 'w': 417 num = strtol(optarg, &p, 10); 418 if (*p || num <= 0) 419 errx(1, "illegal -w value -- %s", optarg); 420 nfsargsp->wsize = num; 421 nfsargsp->flags |= NFSMNT_WSIZE; 422 break; 423 case 'x': 424 num = strtol(optarg, &p, 10); 425 if (*p || num <= 0) 426 errx(1, "illegal -x value -- %s", optarg); 427 nfsargsp->retrans = num; 428 nfsargsp->flags |= NFSMNT_RETRANS; 429 break; 430 case 'X': 431 nfsargsp->flags |= NFSMNT_XLATECOOKIE; 432 break; 433 case 'U': 434 mnttcp_ok = 0; 435 break; 436 default: 437 usage(); 438 break; 439 } 440 argc -= optind; 441 argv += optind; 442 443 if (argc != 2) 444 usage(); 445 446 spec = *argv++; 447 name = *argv; 448 if ((ospec = strdup(spec)) == NULL) { 449 err(1, "strdup"); 450 } 451 452 if ((mntflags & MNT_GETARGS) != 0) { 453 memset(&sa, 0, sizeof(sa)); 454 nfsargsp->addr = (struct sockaddr *)&sa; 455 nfsargsp->addrlen = sizeof(sa); 456 } else { 457 if (!getnfsargs(spec, nfsargsp)) 458 exit(1); 459 } 460 if ((retval = mount(MOUNT_NFS, name, mntflags, nfsargsp))) { 461 /* Did we just default to v3 on a v2-only kernel? 462 * If so, default to v2 & try again */ 463 if ((errno == EPROGMISMATCH) && !force3) { 464 nfsargsp->flags &= ~NFSMNT_NFSV3; 465 retval = mount(MOUNT_NFS, name, mntflags, nfsargsp); 466 } 467 } 468 if (retval) 469 err(1, "%s on %s", ospec, name); 470 if (mntflags & MNT_GETARGS) { 471 shownfsargs(nfsargsp); 472 return (0); 473 } 474 475 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 476 if ((opflags & ISBGRND) == 0) { 477 if ((i = fork()) != 0) { 478 if (i == -1) 479 err(1, "nqnfs 1"); 480 exit(0); 481 } 482 (void) setsid(); 483 (void) close(STDIN_FILENO); 484 (void) close(STDOUT_FILENO); 485 (void) close(STDERR_FILENO); 486 (void) chdir("/"); 487 } 488 openlog("mount_nfs", LOG_PID, LOG_DAEMON); 489 nfssvc_flag = NFSSVC_MNTD; 490 ncd.ncd_dirp = name; 491 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 492 if (errno != ENEEDAUTH) { 493 syslog(LOG_ERR, "nfssvc err %m"); 494 continue; 495 } 496 nfssvc_flag = 497 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 498 #ifdef NFSKERB 499 /* 500 * Set up as ncd_authuid for the kerberos call. 501 * Must set ruid to ncd_authuid and reset the 502 * ticket name iff ncd_authuid is not the same 503 * as last time, so that the right ticket file 504 * is found. 505 * Get the Kerberos credential structure so that 506 * we have the seesion key and get a ticket for 507 * this uid. 508 * For more info see the IETF Draft "Authentication 509 * in ONC RPC". 510 */ 511 if (ncd.ncd_authuid != last_ruid) { 512 krb_set_tkt_string(""); 513 last_ruid = ncd.ncd_authuid; 514 } 515 setreuid(ncd.ncd_authuid, 0); 516 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 517 if (kret == RET_NOTKT) { 518 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 519 DEFAULT_TKT_LIFE); 520 if (kret == KSUCCESS) 521 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 522 &kcr); 523 } 524 if (kret == KSUCCESS) 525 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 526 realm, 0); 527 528 /* 529 * Fill in the AKN_FULLNAME authenticator and verfier. 530 * Along with the Kerberos ticket, we need to build 531 * the timestamp verifier and encrypt it in CBC mode. 532 */ 533 if (kret == KSUCCESS && 534 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 535 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 536 ncd.ncd_authtype = RPCAUTH_KERB4; 537 ncd.ncd_authstr = (u_char *)&ktick; 538 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 539 3 * NFSX_UNSIGNED; 540 ncd.ncd_verfstr = (u_char *)&kverf; 541 ncd.ncd_verflen = sizeof (kverf); 542 memmove(ncd.ncd_key, kcr.session, 543 sizeof (kcr.session)); 544 kin.t1 = htonl(ktv.tv_sec); 545 kin.t2 = htonl(ktv.tv_usec); 546 kin.w1 = htonl(NFS_KERBTTL); 547 kin.w2 = htonl(NFS_KERBTTL - 1); 548 memset((caddr_t)kivec, 0, sizeof (kivec)); 549 550 /* 551 * Encrypt kin in CBC mode using the session 552 * key in kcr. 553 */ 554 XXX 555 556 /* 557 * Finally, fill the timestamp verifier into the 558 * authenticator and verifier. 559 */ 560 ktick.kind = htonl(RPCAKN_FULLNAME); 561 kverf.kind = htonl(RPCAKN_FULLNAME); 562 NFS_KERBW1(ktick.kt) = kout.w1; 563 ktick.kt.length = htonl(ktick.kt.length); 564 kverf.verf.t1 = kout.t1; 565 kverf.verf.t2 = kout.t2; 566 kverf.verf.w2 = kout.w2; 567 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 568 } 569 setreuid(0, 0); 570 #endif /* NFSKERB */ 571 } 572 } 573 exit(0); 574 } 575 576 static void 577 shownfsargs(nfsargsp) 578 const struct nfs_args *nfsargsp; 579 { 580 char fbuf[2048]; 581 char host[NI_MAXHOST], serv[NI_MAXSERV]; 582 int error; 583 584 (void)snprintb(fbuf, sizeof(fbuf), NFSMNT_BITS, nfsargsp->flags); 585 if (nfsargsp->addr != NULL) { 586 error = getnameinfo(nfsargsp->addr, nfsargsp->addrlen, host, 587 sizeof(host), serv, sizeof(serv), 588 NI_NUMERICHOST | NI_NUMERICSERV); 589 if (error != 0) 590 warnx("getnameinfo: %s", gai_strerror(error)); 591 } else 592 error = -1; 593 594 printf("version=%d", nfsargsp->version); 595 if (error == 0) 596 printf(", addr=%s, port=%s, addrlen=%d", 597 host, serv, nfsargsp->addrlen); 598 printf(", sotype=%d, proto=%d, fhsize=%d, " 599 "flags=%s, wsize=%d, rsize=%d, readdirsize=%d, timeo=%d, " 600 "retrans=%d, maxgrouplist=%d, readahead=%d, leaseterm=%d, " 601 "deadthresh=%d\n", 602 nfsargsp->sotype, 603 nfsargsp->proto, 604 nfsargsp->fhsize, 605 fbuf, 606 nfsargsp->wsize, 607 nfsargsp->rsize, 608 nfsargsp->readdirsize, 609 nfsargsp->timeo, 610 nfsargsp->retrans, 611 nfsargsp->maxgrouplist, 612 nfsargsp->readahead, 613 nfsargsp->leaseterm, 614 nfsargsp->deadthresh); 615 } 616 617 static int 618 getnfsargs(spec, nfsargsp) 619 char *spec; 620 struct nfs_args *nfsargsp; 621 { 622 CLIENT *clp; 623 struct addrinfo hints, *ai_nfs, *ai; 624 int ecode; 625 char host[NI_MAXHOST], serv[NI_MAXSERV]; 626 static struct netbuf nfs_nb; 627 static struct sockaddr_storage nfs_ss; 628 struct netconfig *nconf; 629 char *netid; 630 #ifdef ISO 631 static struct sockaddr_iso isoaddr; 632 struct iso_addr *isop; 633 int isoflag = 0; 634 #endif 635 struct timeval pertry, try; 636 enum clnt_stat clnt_stat; 637 int i, nfsvers, mntvers, orgcnt; 638 char *hostp, *delimp; 639 #ifdef NFSKERB 640 char *cp; 641 #endif 642 static struct nfhret nfhret; 643 static char nam[MNAMELEN + 1]; 644 645 strncpy(nam, spec, MNAMELEN); 646 nam[MNAMELEN] = '\0'; 647 if ((delimp = strchr(spec, '@')) != NULL) { 648 hostp = delimp + 1; 649 } else if ((delimp = strrchr(spec, ':')) != NULL) { 650 hostp = spec; 651 spec = delimp + 1; 652 } else { 653 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 654 return (0); 655 } 656 *delimp = '\0'; 657 /* 658 * DUMB!! Until the mount protocol works on iso transport, we must 659 * supply both an iso and an inet address for the host. 660 */ 661 #ifdef ISO 662 if (!strncmp(hostp, "iso=", 4)) { 663 u_short isoport; 664 665 hostp += 4; 666 isoflag++; 667 if ((delimp = strchr(hostp, '+')) == NULL) { 668 warnx("no iso+inet address"); 669 return (0); 670 } 671 *delimp = '\0'; 672 if ((isop = iso_addr(hostp)) == NULL) { 673 warnx("bad ISO address"); 674 return (0); 675 } 676 memset(&isoaddr, 0, sizeof (isoaddr)); 677 memcpy(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 678 isoaddr.siso_len = sizeof (isoaddr); 679 isoaddr.siso_family = AF_ISO; 680 isoaddr.siso_tlen = 2; 681 isoport = htons(NFS_PORT); 682 memcpy(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 683 hostp = delimp + 1; 684 } 685 #endif /* ISO */ 686 687 /* 688 * Handle an internet host address and reverse resolve it if 689 * doing Kerberos. 690 */ 691 memset(&hints, 0, sizeof hints); 692 hints.ai_flags = AI_NUMERICHOST; 693 hints.ai_socktype = nfsargsp->sotype; 694 if (getaddrinfo(hostp, "nfs", &hints, &ai_nfs) == 0) { 695 if ((nfsargsp->flags & NFSMNT_KERB)) { 696 hints.ai_flags = 0; 697 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host, 698 sizeof host, serv, sizeof serv, 0) != 0) { 699 warnx("can't reverse resolve net address for " 700 "host \"%s\": %s", hostp, 701 gai_strerror(ecode)); 702 return (0); 703 } 704 hostp = host; 705 } 706 } else { 707 hints.ai_flags = 0; 708 if ((ecode = getaddrinfo(hostp, "nfs", &hints, &ai_nfs)) != 0) { 709 warnx("can't get net id for host \"%s\": %s", hostp, 710 gai_strerror(ecode)); 711 return (0); 712 } 713 } 714 #ifdef NFSKERB 715 if (nfsargsp->flags & NFSMNT_KERB) { 716 strncpy(inst, hp->h_name, INST_SZ); 717 inst[INST_SZ - 1] = '\0'; 718 if (cp = strchr(inst, '.')) 719 *cp = '\0'; 720 } 721 #endif /* NFSKERB */ 722 723 if (force2) { 724 nfsvers = NFS_VER2; 725 mntvers = RPCMNT_VER1; 726 } else { 727 nfsvers = NFS_VER3; 728 mntvers = RPCMNT_VER3; 729 } 730 orgcnt = retrycnt; 731 nfhret.stat = EACCES; /* Mark not yet successful */ 732 733 for (ai = ai_nfs; ai; ai = ai->ai_next) { 734 /* 735 * XXX. Nead a generic (family, type, proto) -> nconf interface. 736 * __rpc_*2nconf exist, maybe they should be exported. 737 */ 738 if (nfsargsp->sotype == SOCK_STREAM) { 739 if (ai->ai_family == AF_INET6) 740 netid = "tcp6"; 741 else 742 netid = "tcp"; 743 } else { 744 if (ai->ai_family == AF_INET6) 745 netid = "udp6"; 746 else 747 netid = "udp"; 748 } 749 750 nconf = getnetconfigent(netid); 751 752 tryagain: 753 retrycnt = orgcnt; 754 755 while (retrycnt > 0) { 756 nfs_nb.buf = &nfs_ss; 757 nfs_nb.maxlen = sizeof nfs_ss; 758 if (!rpcb_getaddr(RPCPROG_NFS, nfsvers, nconf, &nfs_nb, hostp)){ 759 if (rpc_createerr.cf_stat == RPC_SYSTEMERROR) { 760 nfhret.stat = rpc_createerr.cf_error.re_errno; 761 break; 762 } 763 if (rpc_createerr.cf_stat == RPC_UNKNOWNPROTO) { 764 nfhret.stat = EPROTONOSUPPORT; 765 break; 766 } 767 if ((opflags & ISBGRND) == 0) 768 clnt_pcreateerror( 769 "mount_nfs: rpcbind to nfs on server"); 770 } else { 771 pertry.tv_sec = 10; 772 pertry.tv_usec = 0; 773 /* 774 * XXX relies on clnt_tcp_create to bind to a reserved 775 * socket. 776 */ 777 clp = clnt_tp_create(hostp, RPCPROG_MNT, mntvers, 778 mnttcp_ok ? nconf : getnetconfigent("udp")); 779 if (clp == NULL) { 780 if ((opflags & ISBGRND) == 0) { 781 clnt_pcreateerror( 782 "Cannot MNT RPC (mountd)"); 783 } 784 } else { 785 CLNT_CONTROL(clp, CLSET_RETRY_TIMEOUT, 786 (char *)&pertry); 787 clp->cl_auth = authsys_create_default(); 788 try.tv_sec = 10; 789 try.tv_usec = 0; 790 if (nfsargsp->flags & NFSMNT_KERB) 791 nfhret.auth = RPCAUTH_KERB4; 792 else 793 nfhret.auth = RPCAUTH_UNIX; 794 nfhret.vers = mntvers; 795 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 796 xdr_dir, spec, xdr_fh, &nfhret, try); 797 switch (clnt_stat) { 798 case RPC_PROGVERSMISMATCH: 799 if (nfsvers == NFS_VER3 && !force3) { 800 nfsvers = NFS_VER2; 801 mntvers = RPCMNT_VER1; 802 nfsargsp->flags &= 803 ~NFSMNT_NFSV3; 804 goto tryagain; 805 } else { 806 errx(1, "%s", clnt_sperror(clp, 807 "MNT RPC")); 808 } 809 case RPC_SUCCESS: 810 auth_destroy(clp->cl_auth); 811 clnt_destroy(clp); 812 retrycnt = 0; 813 break; 814 default: 815 /* XXX should give up on some errors */ 816 if ((opflags & ISBGRND) == 0) 817 warnx("%s", clnt_sperror(clp, 818 "bad MNT RPC")); 819 break; 820 } 821 } 822 } 823 if (--retrycnt > 0) { 824 if (opflags & BGRND) { 825 opflags &= ~BGRND; 826 if ((i = fork()) != 0) { 827 if (i == -1) 828 err(1, "nqnfs 2"); 829 exit(0); 830 } 831 (void) setsid(); 832 (void) close(STDIN_FILENO); 833 (void) close(STDOUT_FILENO); 834 (void) close(STDERR_FILENO); 835 (void) chdir("/"); 836 opflags |= ISBGRND; 837 } 838 sleep(60); 839 } 840 } 841 if (nfhret.stat == 0) 842 break; 843 } 844 freeaddrinfo(ai_nfs); 845 if (nfhret.stat) { 846 if (opflags & ISBGRND) 847 exit(1); 848 errno = nfhret.stat; 849 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 850 return (0); 851 } 852 #ifdef ISO 853 if (isoflag) { 854 nfsargsp->addr = (struct sockaddr *) &isoaddr; 855 nfsargsp->addrlen = sizeof (isoaddr); 856 } else 857 #endif /* ISO */ 858 { 859 nfsargsp->addr = (struct sockaddr *) nfs_nb.buf; 860 nfsargsp->addrlen = nfs_nb.len; 861 } 862 nfsargsp->fh = nfhret.nfh; 863 nfsargsp->fhsize = nfhret.fhsize; 864 nfsargsp->hostname = nam; 865 return (1); 866 } 867 868 /* 869 * xdr routines for mount rpc's 870 */ 871 static int 872 xdr_dir(xdrsp, dirp) 873 XDR *xdrsp; 874 char *dirp; 875 { 876 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 877 } 878 879 static int 880 xdr_fh(xdrsp, np) 881 XDR *xdrsp; 882 struct nfhret *np; 883 { 884 int i; 885 long auth, authcnt, authfnd = 0; 886 887 if (!xdr_u_long(xdrsp, &np->stat)) 888 return (0); 889 if (np->stat) 890 return (1); 891 switch (np->vers) { 892 case 1: 893 np->fhsize = NFSX_V2FH; 894 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 895 case 3: 896 if (!xdr_long(xdrsp, &np->fhsize)) 897 return (0); 898 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 899 return (0); 900 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 901 return (0); 902 if (!xdr_long(xdrsp, &authcnt)) 903 return (0); 904 for (i = 0; i < authcnt; i++) { 905 if (!xdr_long(xdrsp, &auth)) 906 return (0); 907 if (auth == np->auth) 908 authfnd++; 909 } 910 /* 911 * Some servers, such as DEC's OSF/1 return a nil authenticator 912 * list to indicate RPCAUTH_UNIX. 913 */ 914 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 915 np->stat = EAUTH; 916 return (1); 917 }; 918 return (0); 919 } 920 921 static void 922 usage() 923 { 924 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n%s\n", 925 "[-23bcCdiKlpPqsTUX] [-a maxreadahead] [-D deadthresh]", 926 "\t[-g maxgroups] [-I readdirsize] [-L leaseterm] [-m realm]", 927 "\t[-o options] [-R retrycnt] [-r readsize] [-t timeout]", 928 "\t[-w writesize] [-x retrans]", 929 "\trhost:path node"); 930 exit(1); 931 } 932
Indexes created Tue Sep 30 11:09:46 GMT 2025