mount_nfs.c revision 1.34
1 /* $NetBSD: mount_nfs.c,v 1.34 2002/09/21 18:43:36 christos 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 1.34 2002/09/21 18:43:36 christos 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 fprintf(stderr, "Yikes! NFSKERB structs not packed!!\n"); 234 235 #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 if (!getnfsargs(spec, nfsargsp)) 454 exit(1); 455 } 456 if ((retval = mount(MOUNT_NFS, name, mntflags, nfsargsp))) { 457 /* Did we just default to v3 on a v2-only kernel? 458 * If so, default to v2 & try again */ 459 if ((errno == EPROGMISMATCH) && !force3) { 460 nfsargsp->flags &= ~NFSMNT_NFSV3; 461 retval = mount(MOUNT_NFS, name, mntflags, nfsargsp); 462 } 463 } 464 if (retval) 465 err(1, "%s on %s", ospec, name); 466 if (mntflags & MNT_GETARGS) { 467 shownfsargs(nfsargsp); 468 return 0; 469 } 470 471 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 472 if ((opflags & ISBGRND) == 0) { 473 if ((i = fork()) != 0) { 474 if (i == -1) 475 err(1, "nqnfs 1"); 476 exit(0); 477 } 478 (void) setsid(); 479 (void) close(STDIN_FILENO); 480 (void) close(STDOUT_FILENO); 481 (void) close(STDERR_FILENO); 482 (void) chdir("/"); 483 } 484 openlog("mount_nfs", LOG_PID, LOG_DAEMON); 485 nfssvc_flag = NFSSVC_MNTD; 486 ncd.ncd_dirp = name; 487 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 488 if (errno != ENEEDAUTH) { 489 syslog(LOG_ERR, "nfssvc err %m"); 490 continue; 491 } 492 nfssvc_flag = 493 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 494 #ifdef NFSKERB 495 /* 496 * Set up as ncd_authuid for the kerberos call. 497 * Must set ruid to ncd_authuid and reset the 498 * ticket name iff ncd_authuid is not the same 499 * as last time, so that the right ticket file 500 * is found. 501 * Get the Kerberos credential structure so that 502 * we have the seesion key and get a ticket for 503 * this uid. 504 * For more info see the IETF Draft "Authentication 505 * in ONC RPC". 506 */ 507 if (ncd.ncd_authuid != last_ruid) { 508 krb_set_tkt_string(""); 509 last_ruid = ncd.ncd_authuid; 510 } 511 setreuid(ncd.ncd_authuid, 0); 512 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 513 if (kret == RET_NOTKT) { 514 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 515 DEFAULT_TKT_LIFE); 516 if (kret == KSUCCESS) 517 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 518 &kcr); 519 } 520 if (kret == KSUCCESS) 521 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 522 realm, 0); 523 524 /* 525 * Fill in the AKN_FULLNAME authenticator and verfier. 526 * Along with the Kerberos ticket, we need to build 527 * the timestamp verifier and encrypt it in CBC mode. 528 */ 529 if (kret == KSUCCESS && 530 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 531 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 532 ncd.ncd_authtype = RPCAUTH_KERB4; 533 ncd.ncd_authstr = (u_char *)&ktick; 534 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 535 3 * NFSX_UNSIGNED; 536 ncd.ncd_verfstr = (u_char *)&kverf; 537 ncd.ncd_verflen = sizeof (kverf); 538 memmove(ncd.ncd_key, kcr.session, 539 sizeof (kcr.session)); 540 kin.t1 = htonl(ktv.tv_sec); 541 kin.t2 = htonl(ktv.tv_usec); 542 kin.w1 = htonl(NFS_KERBTTL); 543 kin.w2 = htonl(NFS_KERBTTL - 1); 544 memset((caddr_t)kivec, 0, sizeof (kivec)); 545 546 /* 547 * Encrypt kin in CBC mode using the session 548 * key in kcr. 549 */ 550 XXX 551 552 /* 553 * Finally, fill the timestamp verifier into the 554 * authenticator and verifier. 555 */ 556 ktick.kind = htonl(RPCAKN_FULLNAME); 557 kverf.kind = htonl(RPCAKN_FULLNAME); 558 NFS_KERBW1(ktick.kt) = kout.w1; 559 ktick.kt.length = htonl(ktick.kt.length); 560 kverf.verf.t1 = kout.t1; 561 kverf.verf.t2 = kout.t2; 562 kverf.verf.w2 = kout.w2; 563 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 564 } 565 setreuid(0, 0); 566 #endif /* NFSKERB */ 567 } 568 } 569 exit(0); 570 } 571 572 static void 573 shownfsargs(nfsargsp) 574 const struct nfs_args *nfsargsp; 575 { 576 char fbuf[2048]; 577 578 (void)snprintb(fbuf, sizeof(fbuf), NFSMNT_BITS, nfsargsp->flags); 579 printf("version=%d, addrlen=%d, sotype=%d, proto=%d, fhsize=%d, " 580 "flags=%s, wsize=%d, rsize=%d, readdirsize=%d, timeo=%d, " 581 "retrans=%d, maxgrouplist=%d, readahead=%d, leaseterm=%d, " 582 "deadthresh=%d\n", 583 nfsargsp->version, 584 nfsargsp->addrlen, 585 nfsargsp->sotype, 586 nfsargsp->proto, 587 nfsargsp->fhsize, 588 fbuf, 589 nfsargsp->wsize, 590 nfsargsp->rsize, 591 nfsargsp->readdirsize, 592 nfsargsp->timeo, 593 nfsargsp->retrans, 594 nfsargsp->maxgrouplist, 595 nfsargsp->readahead, 596 nfsargsp->leaseterm, 597 nfsargsp->deadthresh); 598 } 599 600 static int 601 getnfsargs(spec, nfsargsp) 602 char *spec; 603 struct nfs_args *nfsargsp; 604 { 605 CLIENT *clp; 606 struct addrinfo hints, *ai_nfs, *ai; 607 int ecode; 608 char host[NI_MAXHOST], serv[NI_MAXSERV]; 609 static struct netbuf nfs_nb; 610 static struct sockaddr_storage nfs_ss; 611 struct netconfig *nconf; 612 char *netid; 613 #ifdef ISO 614 static struct sockaddr_iso isoaddr; 615 struct iso_addr *isop; 616 int isoflag = 0; 617 #endif 618 struct timeval pertry, try; 619 enum clnt_stat clnt_stat; 620 int i, nfsvers, mntvers, orgcnt; 621 char *hostp, *delimp; 622 #ifdef NFSKERB 623 char *cp; 624 #endif 625 static struct nfhret nfhret; 626 static char nam[MNAMELEN + 1]; 627 628 strncpy(nam, spec, MNAMELEN); 629 nam[MNAMELEN] = '\0'; 630 if ((delimp = strchr(spec, '@')) != NULL) { 631 hostp = delimp + 1; 632 } else if ((delimp = strrchr(spec, ':')) != NULL) { 633 hostp = spec; 634 spec = delimp + 1; 635 } else { 636 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 637 return (0); 638 } 639 *delimp = '\0'; 640 /* 641 * DUMB!! Until the mount protocol works on iso transport, we must 642 * supply both an iso and an inet address for the host. 643 */ 644 #ifdef ISO 645 if (!strncmp(hostp, "iso=", 4)) { 646 u_short isoport; 647 648 hostp += 4; 649 isoflag++; 650 if ((delimp = strchr(hostp, '+')) == NULL) { 651 warnx("no iso+inet address"); 652 return (0); 653 } 654 *delimp = '\0'; 655 if ((isop = iso_addr(hostp)) == NULL) { 656 warnx("bad ISO address"); 657 return (0); 658 } 659 memset(&isoaddr, 0, sizeof (isoaddr)); 660 memcpy(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 661 isoaddr.siso_len = sizeof (isoaddr); 662 isoaddr.siso_family = AF_ISO; 663 isoaddr.siso_tlen = 2; 664 isoport = htons(NFS_PORT); 665 memcpy(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 666 hostp = delimp + 1; 667 } 668 #endif /* ISO */ 669 670 /* 671 * Handle an internet host address and reverse resolve it if 672 * doing Kerberos. 673 */ 674 memset(&hints, 0, sizeof hints); 675 hints.ai_flags = AI_NUMERICHOST; 676 hints.ai_socktype = nfsargsp->sotype; 677 if (getaddrinfo(hostp, "nfs", &hints, &ai_nfs) == 0) { 678 if ((nfsargsp->flags & NFSMNT_KERB)) { 679 hints.ai_flags = 0; 680 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host, 681 sizeof host, serv, sizeof serv, 0) != 0) { 682 warnx("can't reverse resolve net address for " 683 "host \"%s\": %s", hostp, 684 gai_strerror(ecode)); 685 return (0); 686 } 687 hostp = host; 688 } 689 } else { 690 hints.ai_flags = 0; 691 if ((ecode = getaddrinfo(hostp, "nfs", &hints, &ai_nfs)) != 0) { 692 warnx("can't get net id for host \"%s\": %s", hostp, 693 gai_strerror(ecode)); 694 return (0); 695 } 696 } 697 #ifdef NFSKERB 698 if (nfsargsp->flags & NFSMNT_KERB) { 699 strncpy(inst, hp->h_name, INST_SZ); 700 inst[INST_SZ - 1] = '\0'; 701 if (cp = strchr(inst, '.')) 702 *cp = '\0'; 703 } 704 #endif /* NFSKERB */ 705 706 if (force2) { 707 nfsvers = NFS_VER2; 708 mntvers = RPCMNT_VER1; 709 } else { 710 nfsvers = NFS_VER3; 711 mntvers = RPCMNT_VER3; 712 } 713 orgcnt = retrycnt; 714 nfhret.stat = EACCES; /* Mark not yet successful */ 715 716 ai = ai_nfs; 717 while (ai != NULL) { 718 /* 719 * XXX. Nead a generic (family, type, proto) -> nconf interface. 720 * __rpc_*2nconf exist, maybe they should be exported. 721 */ 722 if (nfsargsp->sotype == SOCK_STREAM) { 723 if (ai->ai_family == AF_INET6) 724 netid = "tcp6"; 725 else 726 netid = "tcp"; 727 } else { 728 if (ai->ai_family == AF_INET6) 729 netid = "udp6"; 730 else 731 netid = "udp"; 732 } 733 734 nconf = getnetconfigent(netid); 735 736 tryagain: 737 retrycnt = orgcnt; 738 739 while (retrycnt > 0) { 740 nfs_nb.buf = &nfs_ss; 741 nfs_nb.maxlen = sizeof nfs_ss; 742 if (!rpcb_getaddr(RPCPROG_NFS, nfsvers, nconf, &nfs_nb, hostp)){ 743 if (rpc_createerr.cf_stat == RPC_SYSTEMERROR) { 744 nfhret.stat = rpc_createerr.cf_error.re_errno; 745 break; 746 } 747 if (rpc_createerr.cf_stat == RPC_UNKNOWNPROTO) { 748 nfhret.stat = EPROTONOSUPPORT; 749 break; 750 } 751 if ((opflags & ISBGRND) == 0) 752 clnt_pcreateerror( 753 "mount_nfs: rpcbind to nfs on server"); 754 } else { 755 pertry.tv_sec = 10; 756 pertry.tv_usec = 0; 757 /* 758 * XXX relies on clnt_tcp_create to bind to a reserved 759 * socket. 760 */ 761 clp = clnt_tp_create(hostp, RPCPROG_MNT, mntvers, 762 mnttcp_ok ? nconf : getnetconfigent("udp")); 763 if (clp == NULL) { 764 if ((opflags & ISBGRND) == 0) { 765 clnt_pcreateerror( 766 "Cannot MNT RPC (mountd)"); 767 } 768 } else { 769 CLNT_CONTROL(clp, CLSET_RETRY_TIMEOUT, 770 (char *)&pertry); 771 clp->cl_auth = authsys_create_default(); 772 try.tv_sec = 10; 773 try.tv_usec = 0; 774 if (nfsargsp->flags & NFSMNT_KERB) 775 nfhret.auth = RPCAUTH_KERB4; 776 else 777 nfhret.auth = RPCAUTH_UNIX; 778 nfhret.vers = mntvers; 779 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 780 xdr_dir, spec, xdr_fh, &nfhret, try); 781 switch (clnt_stat) { 782 case RPC_PROGVERSMISMATCH: 783 if (nfsvers == NFS_VER3 && !force3) { 784 nfsvers = NFS_VER2; 785 mntvers = RPCMNT_VER1; 786 nfsargsp->flags &= 787 ~NFSMNT_NFSV3; 788 goto tryagain; 789 } else { 790 errx(1, "%s", clnt_sperror(clp, 791 "MNT RPC")); 792 } 793 case RPC_SUCCESS: 794 auth_destroy(clp->cl_auth); 795 clnt_destroy(clp); 796 retrycnt = 0; 797 break; 798 default: 799 /* XXX should give up on some errors */ 800 if ((opflags & ISBGRND) == 0) 801 warnx("%s", clnt_sperror(clp, 802 "bad MNT RPC")); 803 break; 804 } 805 } 806 } 807 if (--retrycnt > 0) { 808 if (opflags & BGRND) { 809 opflags &= ~BGRND; 810 if ((i = fork()) != 0) { 811 if (i == -1) 812 err(1, "nqnfs 2"); 813 exit(0); 814 } 815 (void) setsid(); 816 (void) close(STDIN_FILENO); 817 (void) close(STDOUT_FILENO); 818 (void) close(STDERR_FILENO); 819 (void) chdir("/"); 820 opflags |= ISBGRND; 821 } 822 sleep(60); 823 } 824 } 825 if (nfhret.stat == 0) 826 break; 827 ai = ai->ai_next; 828 } 829 freeaddrinfo(ai_nfs); 830 if (nfhret.stat) { 831 if (opflags & ISBGRND) 832 exit(1); 833 errno = nfhret.stat; 834 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 835 return (0); 836 } 837 #ifdef ISO 838 if (isoflag) { 839 nfsargsp->addr = (struct sockaddr *) &isoaddr; 840 nfsargsp->addrlen = sizeof (isoaddr); 841 } else 842 #endif /* ISO */ 843 { 844 nfsargsp->addr = (struct sockaddr *) nfs_nb.buf; 845 nfsargsp->addrlen = nfs_nb.len; 846 } 847 nfsargsp->fh = nfhret.nfh; 848 nfsargsp->fhsize = nfhret.fhsize; 849 nfsargsp->hostname = nam; 850 return (1); 851 } 852 853 /* 854 * xdr routines for mount rpc's 855 */ 856 static int 857 xdr_dir(xdrsp, dirp) 858 XDR *xdrsp; 859 char *dirp; 860 { 861 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 862 } 863 864 static int 865 xdr_fh(xdrsp, np) 866 XDR *xdrsp; 867 struct nfhret *np; 868 { 869 int i; 870 long auth, authcnt, authfnd = 0; 871 872 if (!xdr_u_long(xdrsp, &np->stat)) 873 return (0); 874 if (np->stat) 875 return (1); 876 switch (np->vers) { 877 case 1: 878 np->fhsize = NFSX_V2FH; 879 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 880 case 3: 881 if (!xdr_long(xdrsp, &np->fhsize)) 882 return (0); 883 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 884 return (0); 885 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 886 return (0); 887 if (!xdr_long(xdrsp, &authcnt)) 888 return (0); 889 for (i = 0; i < authcnt; i++) { 890 if (!xdr_long(xdrsp, &auth)) 891 return (0); 892 if (auth == np->auth) 893 authfnd++; 894 } 895 /* 896 * Some servers, such as DEC's OSF/1 return a nil authenticator 897 * list to indicate RPCAUTH_UNIX. 898 */ 899 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 900 np->stat = EAUTH; 901 return (1); 902 }; 903 return (0); 904 } 905 906 static void 907 usage() 908 { 909 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n%s\n", 910 "[-23bcCdiKlpPqsTUX] [-a maxreadahead] [-D deadthresh]", 911 "\t[-g maxgroups] [-I readdirsize] [-L leaseterm] [-m realm]", 912 "\t[-o options] [-R retrycnt] [-r readsize] [-t timeout]", 913 "\t[-w writesize] [-x retrans]", 914 "\trhost:path node"); 915 exit(1); 916 } 917
Indexes created Wed Oct 01 15:09:59 GMT 2025