mount_nfs.c revision 1.14
1 /* $NetBSD: mount_nfs.c,v 1.14 1996/10/27 21:18:04 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 #ifndef lint 40 static char copyright[] = 41 "@(#) 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 static char rcsid[] = "$NetBSD: mount_nfs.c,v 1.14 1996/10/27 21:18:04 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/socketvar.h> 57 #include <sys/stat.h> 58 #include <syslog.h> 59 60 #include <rpc/rpc.h> 61 #include <rpc/pmap_clnt.h> 62 #include <rpc/pmap_prot.h> 63 64 #ifdef ISO 65 #include <netiso/iso.h> 66 #endif 67 68 #ifdef NFSKERB 69 #include <kerberosIV/des.h> 70 #include <kerberosIV/krb.h> 71 #endif 72 73 #include <nfs/rpcv2.h> 74 #include <nfs/nfsproto.h> 75 #define _KERNEL 76 #include <nfs/nfs.h> 77 #undef _KERNEL 78 #include <nfs/nqnfs.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 <strings.h> 91 #include <unistd.h> 92 93 #include "mntopts.h" 94 95 #define ALTF_BG 0x1 96 #define ALTF_CONN 0x2 97 #define ALTF_DUMBTIMR 0x4 98 #define ALTF_INTR 0x8 99 #define ALTF_KERB 0x10 100 #define ALTF_NFSV3 0x20 101 #define ALTF_RDIRPLUS 0x40 102 #define ALTF_MNTUDP 0x80 103 #define ALTF_RESVPORT 0x100 104 #define ALTF_SEQPACKET 0x200 105 #define ALTF_NQNFS 0x400 106 #define ALTF_SOFT 0x800 107 #define ALTF_TCP 0x1000 108 #define ALTF_NFSV2 0x2000 109 110 const struct mntopt mopts[] = { 111 MOPT_STDOPTS, 112 MOPT_FORCE, 113 MOPT_UPDATE, 114 { "bg", 0, ALTF_BG, 1 }, 115 { "conn", 0, ALTF_CONN, 1 }, 116 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 117 { "intr", 0, ALTF_INTR, 1 }, 118 #ifdef NFSKERB 119 { "kerb", 0, ALTF_KERB, 1 }, 120 #endif 121 { "nfsv3", 0, ALTF_NFSV3, 1 }, 122 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 123 { "mntudp", 0, ALTF_MNTUDP, 1 }, 124 { "resvport", 0, ALTF_RESVPORT, 1 }, 125 #ifdef ISO 126 { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 127 #endif 128 { "nqnfs", 0, ALTF_NQNFS, 1 }, 129 { "soft", 0, ALTF_SOFT, 1 }, 130 { "tcp", 0, ALTF_TCP, 1 }, 131 { "nfsv2", 0, ALTF_NFSV2, 1 }, 132 { NULL } 133 }; 134 135 struct nfs_args nfsdefargs = { 136 NFS_ARGSVERSION, 137 (struct sockaddr *)0, 138 sizeof (struct sockaddr_in), 139 SOCK_DGRAM, 140 0, 141 (u_char *)0, 142 0, 143 NFSMNT_NFSV3|NFSMNT_NOCONN, 144 NFS_WSIZE, 145 NFS_RSIZE, 146 NFS_READDIRSIZE, 147 10, 148 NFS_RETRANS, 149 NFS_MAXGRPS, 150 NFS_DEFRAHEAD, 151 NQ_DEFLEASE, 152 NQ_DEADTHRESH, 153 (char *)0, 154 }; 155 156 struct nfhret { 157 u_long stat; 158 long vers; 159 long auth; 160 long fhsize; 161 u_char nfh[NFSX_V3FHMAX]; 162 }; 163 #define DEF_RETRY 10000 164 #define BGRND 1 165 #define ISBGRND 2 166 int retrycnt; 167 int opflags = 0; 168 int nfsproto = IPPROTO_UDP; 169 int mnttcp_ok = 1; 170 int force2 = 0; 171 int force3 = 0; 172 173 #ifdef NFSKERB 174 char inst[INST_SZ]; 175 char realm[REALM_SZ]; 176 struct { 177 u_long kind; 178 KTEXT_ST kt; 179 } ktick; 180 struct nfsrpc_nickverf kverf; 181 struct nfsrpc_fullblock kin, kout; 182 NFSKERBKEY_T kivec; 183 CREDENTIALS kcr; 184 struct timeval ktv; 185 NFSKERBKEYSCHED_T kerb_keysched; 186 #endif 187 188 int getnfsargs __P((char *, struct nfs_args *)); 189 #ifdef ISO 190 struct iso_addr *iso_addr __P((const char *)); 191 #endif 192 void set_rpc_maxgrouplist __P((int)); 193 __dead void usage __P((void)); 194 int xdr_dir __P((XDR *, char *)); 195 int xdr_fh __P((XDR *, struct nfhret *)); 196 197 int 198 main(argc, argv) 199 int argc; 200 char *argv[]; 201 { 202 register int c; 203 register struct nfs_args *nfsargsp; 204 struct nfs_args nfsargs; 205 struct nfsd_cargs ncd; 206 int mntflags, altflags, i, nfssvc_flag, num; 207 char *name, *p, *spec; 208 int error = 0; 209 #ifdef NFSKERB 210 uid_t last_ruid; 211 212 last_ruid = -1; 213 if (krb_get_lrealm(realm, 0) != KSUCCESS) 214 (void)strcpy(realm, KRB_REALM); 215 if (sizeof (struct nfsrpc_nickverf) != RPCX_NICKVERF || 216 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK || 217 ((char *)&ktick.kt) - ((char *)&ktick) != NFSX_UNSIGNED || 218 ((char *)ktick.kt.dat) - ((char *)&ktick) != 2 * NFSX_UNSIGNED) 219 fprintf(stderr, "Yikes! NFSKERB structs not packed!!\n"); 220 221 #endif 222 retrycnt = DEF_RETRY; 223 224 mntflags = 0; 225 altflags = 0; 226 nfsargs = nfsdefargs; 227 nfsargsp = &nfsargs; 228 while ((c = getopt(argc, argv, 229 "23a:bcCdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:U")) != EOF) 230 switch (c) { 231 case '3': 232 if (force2) 233 errx(1, "-2 and -3 are mutually exclusive"); 234 force3 = 1; 235 break; 236 case '2': 237 if (force3) 238 errx(1, "-2 and -3 are mutually exclusive"); 239 force2 = 1; 240 nfsargsp->flags &= ~NFSMNT_NFSV3; 241 break; 242 case 'a': 243 num = strtol(optarg, &p, 10); 244 if (*p || num < 0) 245 errx(1, "illegal -a value -- %s", optarg); 246 nfsargsp->readahead = num; 247 nfsargsp->flags |= NFSMNT_READAHEAD; 248 break; 249 case 'b': 250 opflags |= BGRND; 251 break; 252 case 'c': 253 nfsargsp->flags |= NFSMNT_NOCONN; 254 break; 255 case 'C': 256 nfsargsp->flags &= ~NFSMNT_NOCONN; 257 break; 258 case 'D': 259 num = strtol(optarg, &p, 10); 260 if (*p || num <= 0) 261 errx(1, "illegal -D value -- %s", optarg); 262 nfsargsp->deadthresh = num; 263 nfsargsp->flags |= NFSMNT_DEADTHRESH; 264 break; 265 case 'd': 266 nfsargsp->flags |= NFSMNT_DUMBTIMR; 267 break; 268 #if 0 /* XXXX */ 269 case 'g': 270 num = strtol(optarg, &p, 10); 271 if (*p || num <= 0) 272 errx(1, "illegal -g value -- %s", optarg); 273 set_rpc_maxgrouplist(num); 274 nfsargsp->maxgrouplist = num; 275 nfsargsp->flags |= NFSMNT_MAXGRPS; 276 break; 277 #endif 278 case 'I': 279 num = strtol(optarg, &p, 10); 280 if (*p || num <= 0) 281 errx(1, "illegal -I value -- %s", optarg); 282 nfsargsp->readdirsize = num; 283 nfsargsp->flags |= NFSMNT_READDIRSIZE; 284 break; 285 case 'i': 286 nfsargsp->flags |= NFSMNT_INT; 287 break; 288 #ifdef NFSKERB 289 case 'K': 290 nfsargsp->flags |= NFSMNT_KERB; 291 break; 292 #endif 293 case 'L': 294 num = strtol(optarg, &p, 10); 295 if (*p || num < 2) 296 errx(1, "illegal -L value -- %s", optarg); 297 nfsargsp->leaseterm = num; 298 nfsargsp->flags |= NFSMNT_LEASETERM; 299 break; 300 case 'l': 301 nfsargsp->flags |= NFSMNT_RDIRPLUS; 302 break; 303 #ifdef NFSKERB 304 case 'm': 305 (void)strncpy(realm, optarg, REALM_SZ - 1); 306 realm[REALM_SZ - 1] = '\0'; 307 break; 308 #endif 309 case 'o': 310 getmntopts(optarg, mopts, &mntflags, &altflags); 311 if(altflags & ALTF_BG) 312 opflags |= BGRND; 313 if(altflags & ALTF_CONN) 314 nfsargsp->flags &= ~NFSMNT_NOCONN; 315 if(altflags & ALTF_DUMBTIMR) 316 nfsargsp->flags |= NFSMNT_DUMBTIMR; 317 if(altflags & ALTF_INTR) 318 nfsargsp->flags |= NFSMNT_INT; 319 #ifdef NFSKERB 320 if(altflags & ALTF_KERB) 321 nfsargsp->flags |= NFSMNT_KERB; 322 #endif 323 if(altflags & ALTF_NFSV3) { 324 if (force2) 325 errx(1,"conflicting version options"); 326 force3 = 1; 327 } 328 if(altflags & ALTF_NFSV2) { 329 if (force3) 330 errx(1,"conflicting version options"); 331 force2 = 1; 332 nfsargsp->flags &= ~NFSMNT_NFSV3; 333 } 334 if(altflags & ALTF_RDIRPLUS) 335 nfsargsp->flags |= NFSMNT_RDIRPLUS; 336 if(altflags & ALTF_MNTUDP) 337 mnttcp_ok = 0; 338 if(altflags & ALTF_RESVPORT) 339 nfsargsp->flags |= NFSMNT_RESVPORT; 340 #ifdef ISO 341 if(altflags & ALTF_SEQPACKET) 342 nfsargsp->sotype = SOCK_SEQPACKET; 343 #endif 344 if(altflags & ALTF_NQNFS) { 345 if (force2) 346 errx(1,"nqnfs only available with v3"); 347 force3 = 1; 348 nfsargsp->flags |= NFSMNT_NQNFS; 349 } 350 if(altflags & ALTF_SOFT) 351 nfsargsp->flags |= NFSMNT_SOFT; 352 if(altflags & ALTF_TCP) { 353 nfsargsp->sotype = SOCK_STREAM; 354 nfsproto = IPPROTO_TCP; 355 } 356 altflags = 0; 357 break; 358 case 'P': 359 nfsargsp->flags |= NFSMNT_RESVPORT; 360 break; 361 #ifdef ISO 362 case 'p': 363 nfsargsp->sotype = SOCK_SEQPACKET; 364 break; 365 #endif 366 case 'q': 367 if (force2) 368 errx(1,"nqnfs only available with v3"); 369 force3 = 1; 370 nfsargsp->flags |= NFSMNT_NQNFS; 371 break; 372 case 'R': 373 num = strtol(optarg, &p, 10); 374 if (*p || num <= 0) 375 errx(1, "illegal -R value -- %s", optarg); 376 retrycnt = num; 377 break; 378 case 'r': 379 num = strtol(optarg, &p, 10); 380 if (*p || num <= 0) 381 errx(1, "illegal -r value -- %s", optarg); 382 nfsargsp->rsize = num; 383 nfsargsp->flags |= NFSMNT_RSIZE; 384 break; 385 case 's': 386 nfsargsp->flags |= NFSMNT_SOFT; 387 break; 388 case 'T': 389 nfsargsp->sotype = SOCK_STREAM; 390 nfsproto = IPPROTO_TCP; 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 'U': 414 mnttcp_ok = 0; 415 break; 416 default: 417 usage(); 418 break; 419 } 420 argc -= optind; 421 argv += optind; 422 423 if (argc != 2) 424 usage(); 425 426 spec = *argv++; 427 name = *argv; 428 429 if (!getnfsargs(spec, nfsargsp)) 430 exit(1); 431 if (mount(MOUNT_NFS, name, mntflags, nfsargsp)) 432 err(1, "%s", name); 433 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 434 if ((opflags & ISBGRND) == 0) { 435 if (i = fork()) { 436 if (i == -1) 437 err(1, "nqnfs 1"); 438 exit(0); 439 } 440 (void) setsid(); 441 (void) close(STDIN_FILENO); 442 (void) close(STDOUT_FILENO); 443 (void) close(STDERR_FILENO); 444 (void) chdir("/"); 445 } 446 openlog("mount_nfs:", LOG_PID, LOG_DAEMON); 447 nfssvc_flag = NFSSVC_MNTD; 448 ncd.ncd_dirp = name; 449 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 450 if (errno != ENEEDAUTH) { 451 syslog(LOG_ERR, "nfssvc err %m"); 452 continue; 453 } 454 nfssvc_flag = 455 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 456 #ifdef NFSKERB 457 /* 458 * Set up as ncd_authuid for the kerberos call. 459 * Must set ruid to ncd_authuid and reset the 460 * ticket name iff ncd_authuid is not the same 461 * as last time, so that the right ticket file 462 * is found. 463 * Get the Kerberos credential structure so that 464 * we have the seesion key and get a ticket for 465 * this uid. 466 * For more info see the IETF Draft "Authentication 467 * in ONC RPC". 468 */ 469 if (ncd.ncd_authuid != last_ruid) { 470 krb_set_tkt_string(""); 471 last_ruid = ncd.ncd_authuid; 472 } 473 setreuid(ncd.ncd_authuid, 0); 474 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 475 if (kret == RET_NOTKT) { 476 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 477 DEFAULT_TKT_LIFE); 478 if (kret == KSUCCESS) 479 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 480 &kcr); 481 } 482 if (kret == KSUCCESS) 483 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 484 realm, 0); 485 486 /* 487 * Fill in the AKN_FULLNAME authenticator and verfier. 488 * Along with the Kerberos ticket, we need to build 489 * the timestamp verifier and encrypt it in CBC mode. 490 */ 491 if (kret == KSUCCESS && 492 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 493 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 494 ncd.ncd_authtype = RPCAUTH_KERB4; 495 ncd.ncd_authstr = (u_char *)&ktick; 496 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 497 3 * NFSX_UNSIGNED; 498 ncd.ncd_verfstr = (u_char *)&kverf; 499 ncd.ncd_verflen = sizeof (kverf); 500 memmove(ncd.ncd_key, kcr.session, 501 sizeof (kcr.session)); 502 kin.t1 = htonl(ktv.tv_sec); 503 kin.t2 = htonl(ktv.tv_usec); 504 kin.w1 = htonl(NFS_KERBTTL); 505 kin.w2 = htonl(NFS_KERBTTL - 1); 506 bzero((caddr_t)kivec, sizeof (kivec)); 507 508 /* 509 * Encrypt kin in CBC mode using the session 510 * key in kcr. 511 */ 512 XXX 513 514 /* 515 * Finally, fill the timestamp verifier into the 516 * authenticator and verifier. 517 */ 518 ktick.kind = htonl(RPCAKN_FULLNAME); 519 kverf.kind = htonl(RPCAKN_FULLNAME); 520 NFS_KERBW1(ktick.kt) = kout.w1; 521 ktick.kt.length = htonl(ktick.kt.length); 522 kverf.verf.t1 = kout.t1; 523 kverf.verf.t2 = kout.t2; 524 kverf.verf.w2 = kout.w2; 525 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 526 } 527 setreuid(0, 0); 528 #endif /* NFSKERB */ 529 } 530 } 531 exit(0); 532 } 533 534 int 535 getnfsargs(spec, nfsargsp) 536 char *spec; 537 struct nfs_args *nfsargsp; 538 { 539 register CLIENT *clp; 540 struct hostent *hp; 541 static struct sockaddr_in saddr; 542 #ifdef ISO 543 static struct sockaddr_iso isoaddr; 544 struct iso_addr *isop; 545 int isoflag = 0; 546 #endif 547 struct timeval pertry, try; 548 enum clnt_stat clnt_stat; 549 int so = RPC_ANYSOCK, i, nfsvers, mntvers, orgcnt; 550 char *hostp, *delimp; 551 #ifdef NFSKERB 552 char *cp; 553 #endif 554 u_short tport; 555 static struct nfhret nfhret; 556 static char nam[MNAMELEN + 1]; 557 558 strncpy(nam, spec, MNAMELEN); 559 nam[MNAMELEN] = '\0'; 560 if ((delimp = strchr(spec, '@')) != NULL) { 561 hostp = delimp + 1; 562 } else if ((delimp = strchr(spec, ':')) != NULL) { 563 hostp = spec; 564 spec = delimp + 1; 565 } else { 566 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 567 return (0); 568 } 569 *delimp = '\0'; 570 /* 571 * DUMB!! Until the mount protocol works on iso transport, we must 572 * supply both an iso and an inet address for the host. 573 */ 574 #ifdef ISO 575 if (!strncmp(hostp, "iso=", 4)) { 576 u_short isoport; 577 578 hostp += 4; 579 isoflag++; 580 if ((delimp = strchr(hostp, '+')) == NULL) { 581 warnx("no iso+inet address"); 582 return (0); 583 } 584 *delimp = '\0'; 585 if ((isop = iso_addr(hostp)) == NULL) { 586 warnx("bad ISO address"); 587 return (0); 588 } 589 memset(&isoaddr, 0, sizeof (isoaddr)); 590 memcpy(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 591 isoaddr.siso_len = sizeof (isoaddr); 592 isoaddr.siso_family = AF_ISO; 593 isoaddr.siso_tlen = 2; 594 isoport = htons(NFS_PORT); 595 memcpy(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 596 hostp = delimp + 1; 597 } 598 #endif /* ISO */ 599 600 /* 601 * Handle an internet host address and reverse resolve it if 602 * doing Kerberos. 603 */ 604 if (inet_aton(hostp, &saddr.sin_addr) != 0) { 605 if ((nfsargsp->flags & NFSMNT_KERB)) { 606 if ((hp = gethostbyaddr((char *)&saddr.sin_addr.s_addr, 607 sizeof (u_long), AF_INET)) == (struct hostent *)0) { 608 warnx("can't reverse resolve net address"); 609 return (0); 610 } 611 } 612 } else { 613 hp = gethostbyname(hostp); 614 if (hp == NULL) { 615 warnx("can't get net id for host"); 616 return (0); 617 } 618 memcpy(&saddr.sin_addr, hp->h_addr, hp->h_length); 619 } 620 #ifdef NFSKERB 621 if (nfsargsp->flags & NFSMNT_KERB) { 622 strncpy(inst, hp->h_name, INST_SZ); 623 inst[INST_SZ - 1] = '\0'; 624 if (cp = strchr(inst, '.')) 625 *cp = '\0'; 626 } 627 #endif /* NFSKERB */ 628 629 if (force2) { 630 nfsvers = NFS_VER2; 631 mntvers = RPCMNT_VER1; 632 } else { 633 nfsvers = NFS_VER3; 634 mntvers = RPCMNT_VER3; 635 } 636 orgcnt = retrycnt; 637 tryagain: 638 nfhret.stat = EACCES; /* Mark not yet successful */ 639 while (retrycnt > 0) { 640 saddr.sin_family = AF_INET; 641 saddr.sin_port = htons(PMAPPORT); 642 if ((tport = pmap_getport(&saddr, RPCPROG_NFS, 643 nfsvers, nfsargsp->sotype == SOCK_STREAM ? IPPROTO_TCP : 644 IPPROTO_UDP)) == 0) { 645 if ((opflags & ISBGRND) == 0) 646 clnt_pcreateerror("NFS Portmap"); 647 } else { 648 saddr.sin_port = 0; 649 pertry.tv_sec = 10; 650 pertry.tv_usec = 0; 651 if (mnttcp_ok && nfsargsp->sotype == SOCK_STREAM) 652 clp = clnttcp_create(&saddr, RPCPROG_MNT, mntvers, 653 &so, 0, 0); 654 else 655 clp = clntudp_create(&saddr, RPCPROG_MNT, mntvers, 656 pertry, &so); 657 if (clp == NULL) { 658 if ((opflags & ISBGRND) == 0) 659 clnt_pcreateerror("Cannot MNT PRC"); 660 } else { 661 clp->cl_auth = authunix_create_default(); 662 try.tv_sec = 10; 663 try.tv_usec = 0; 664 if (nfsargsp->flags & NFSMNT_KERB) 665 nfhret.auth = RPCAUTH_KERB4; 666 else 667 nfhret.auth = RPCAUTH_UNIX; 668 nfhret.vers = mntvers; 669 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 670 xdr_dir, spec, xdr_fh, &nfhret, try); 671 if (clnt_stat != RPC_SUCCESS) { 672 if (clnt_stat == RPC_PROGVERSMISMATCH) { 673 if (nfsvers == NFS_VER3 && 674 !force3) { 675 retrycnt = orgcnt; 676 nfsvers = NFS_VER2; 677 mntvers = RPCMNT_VER1; 678 nfsargsp->flags &= 679 ~NFSMNT_NFSV3; 680 goto tryagain; 681 } else { 682 errx(1, "%s", 683 clnt_sperror(clp, 684 "MNT RPC")); 685 } 686 } 687 if ((opflags & ISBGRND) == 0) 688 warnx("%s", clnt_sperror(clp, 689 "bad MNT RPC")); 690 } else { 691 auth_destroy(clp->cl_auth); 692 clnt_destroy(clp); 693 retrycnt = 0; 694 } 695 } 696 } 697 if (--retrycnt > 0) { 698 if (opflags & BGRND) { 699 opflags &= ~BGRND; 700 if (i = fork()) { 701 if (i == -1) 702 err(1, "nqnfs 2"); 703 exit(0); 704 } 705 (void) setsid(); 706 (void) close(STDIN_FILENO); 707 (void) close(STDOUT_FILENO); 708 (void) close(STDERR_FILENO); 709 (void) chdir("/"); 710 opflags |= ISBGRND; 711 } 712 sleep(60); 713 } 714 } 715 if (nfhret.stat) { 716 if (opflags & ISBGRND) 717 exit(1); 718 errno = nfhret.stat; 719 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 720 return (0); 721 } 722 saddr.sin_port = htons(tport); 723 #ifdef ISO 724 if (isoflag) { 725 nfsargsp->addr = (struct sockaddr *) &isoaddr; 726 nfsargsp->addrlen = sizeof (isoaddr); 727 } else 728 #endif /* ISO */ 729 { 730 nfsargsp->addr = (struct sockaddr *) &saddr; 731 nfsargsp->addrlen = sizeof (saddr); 732 } 733 nfsargsp->fh = nfhret.nfh; 734 nfsargsp->fhsize = nfhret.fhsize; 735 nfsargsp->hostname = nam; 736 return (1); 737 } 738 739 /* 740 * xdr routines for mount rpc's 741 */ 742 int 743 xdr_dir(xdrsp, dirp) 744 XDR *xdrsp; 745 char *dirp; 746 { 747 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 748 } 749 750 int 751 xdr_fh(xdrsp, np) 752 XDR *xdrsp; 753 register struct nfhret *np; 754 { 755 register int i; 756 long auth, authcnt, authfnd = 0; 757 758 if (!xdr_u_long(xdrsp, &np->stat)) 759 return (0); 760 if (np->stat) 761 return (1); 762 switch (np->vers) { 763 case 1: 764 np->fhsize = NFSX_V2FH; 765 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 766 case 3: 767 if (!xdr_long(xdrsp, &np->fhsize)) 768 return (0); 769 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 770 return (0); 771 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 772 return (0); 773 if (!xdr_long(xdrsp, &authcnt)) 774 return (0); 775 for (i = 0; i < authcnt; i++) { 776 if (!xdr_long(xdrsp, &auth)) 777 return (0); 778 if (auth == np->auth) 779 authfnd++; 780 } 781 /* 782 * Some servers, such as DEC's OSF/1 return a nil authenticator 783 * list to indicate RPCAUTH_UNIX. 784 */ 785 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 786 np->stat = EAUTH; 787 return (1); 788 }; 789 return (0); 790 } 791 792 __dead void 793 usage() 794 { 795 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n", 796 "[-23bcCdiKklMPqsT] [-a maxreadahead] [-D deadthresh]", 797 "\t[-g maxgroups] [-L leaseterm] [-m realm] [-o options] [-R retrycnt]", 798 "\t[-r readsize] [-t timeout] [-w writesize] [-x retrans]", 799 "\trhost:path node"); 800 exit(1); 801 } 802
Indexes created Sun Sep 28 12:09:53 GMT 2025