1 /* 2 * Copyright (c) 1992, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 static char copyright[] = 39 "@(#) Copyright (c) 1992, 1993, 1994\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 /* 45 static char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95"; 46 */ 47 static const char rcsid[] = 48 "$Id: mount_nfs.c,v 1.19 1997/04/01 17:20:17 guido Exp $"; 49 #endif /* not lint */ 50 51 #include <sys/param.h> 52 #include <sys/mount.h> 53 #include <sys/socket.h> 54 #include <sys/socketvar.h> 55 #include <sys/stat.h> 56 #include <sys/syslog.h> 57 58 #include <rpc/rpc.h> 59 #include <rpc/pmap_clnt.h> 60 #include <rpc/pmap_prot.h> 61 62 #ifdef ISO 63 #include <netiso/iso.h> 64 #endif 65 66 #ifdef NFSKERB 67 #include <kerberosIV/des.h> 68 #include <kerberosIV/krb.h> 69 #endif 70 71 #include <nfs/rpcv2.h> 72 #include <nfs/nfsproto.h> 73 #define KERNEL 74 #include <nfs/nfs.h> 75 #undef KERNEL 76 #include <nfs/nqnfs.h> 77 78 #include <arpa/inet.h> 79 80 #include <ctype.h> 81 #include <err.h> 82 #include <errno.h> 83 #include <fcntl.h> 84 #include <netdb.h> 85 #include <signal.h> 86 #include <stdio.h> 87 #include <stdlib.h> 88 #include <strings.h> 89 #include <sysexits.h> 90 #include <unistd.h> 91 92 #include "mntopts.h" 93 94 #define ALTF_BG 0x1 95 #define ALTF_NOCONN 0x2 96 #define ALTF_DUMBTIMR 0x4 97 #define ALTF_INTR 0x8 98 #define ALTF_KERB 0x10 99 #define ALTF_NFSV3 0x20 100 #define ALTF_RDIRPLUS 0x40 101 #define ALTF_MNTUDP 0x80 102 #define ALTF_RESVPORT 0x100 103 #define ALTF_SEQPACKET 0x200 104 #define ALTF_NQNFS 0x400 105 #define ALTF_SOFT 0x800 106 #define ALTF_TCP 0x1000 107 #define ALTF_PORT 0x2000 108 109 struct mntopt mopts[] = { 110 MOPT_STDOPTS, 111 MOPT_FORCE, 112 MOPT_UPDATE, 113 { "bg", 0, ALTF_BG, 1 }, 114 { "conn", 1, ALTF_NOCONN, 1 }, 115 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 116 { "intr", 0, ALTF_INTR, 1 }, 117 #ifdef NFSKERB 118 { "kerb", 0, ALTF_KERB, 1 }, 119 #endif 120 { "nfsv3", 0, ALTF_NFSV3, 1 }, 121 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 122 { "mntudp", 0, ALTF_MNTUDP, 1 }, 123 { "resvport", 0, ALTF_RESVPORT, 1 }, 124 #ifdef ISO 125 { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 126 #endif 127 { "nqnfs", 0, ALTF_NQNFS, 1 }, 128 { "soft", 0, ALTF_SOFT, 1 }, 129 { "tcp", 0, ALTF_TCP, 1 }, 130 { "port=", 0, ALTF_PORT, 1 }, 131 { NULL } 132 }; 133 134 struct nfs_args nfsdefargs = { 135 NFS_ARGSVERSION, 136 (struct sockaddr *)0, 137 sizeof (struct sockaddr_in), 138 SOCK_DGRAM, 139 0, 140 (u_char *)0, 141 0, 142 NFSMNT_RESVPORT, 143 NFS_WSIZE, 144 NFS_RSIZE, 145 NFS_READDIRSIZE, 146 10, 147 NFS_RETRANS, 148 NFS_MAXGRPS, 149 NFS_DEFRAHEAD, 150 NQ_DEFLEASE, 151 NQ_DEADTHRESH, 152 (char *)0, 153 }; 154 155 struct nfhret { 156 u_long stat; 157 long vers; 158 long auth; 159 long fhsize; 160 u_char nfh[NFSX_V3FHMAX]; 161 }; 162 #define DEF_RETRY 10000 163 #define BGRND 1 164 #define ISBGRND 2 165 int retrycnt = DEF_RETRY; 166 int opflags = 0; 167 int nfsproto = IPPROTO_UDP; 168 int mnttcp_ok = 1; 169 u_short port_no = 0; 170 171 #ifdef NFSKERB 172 char inst[INST_SZ]; 173 char realm[REALM_SZ]; 174 struct { 175 u_long kind; 176 KTEXT_ST kt; 177 } ktick; 178 struct nfsrpc_nickverf kverf; 179 struct nfsrpc_fullblock kin, kout; 180 NFSKERBKEY_T kivec; 181 CREDENTIALS kcr; 182 struct timeval ktv; 183 NFSKERBKEYSCHED_T kerb_keysched; 184 #endif 185 186 int getnfsargs __P((char *, struct nfs_args *)); 187 #ifdef ISO 188 struct iso_addr *iso_addr __P((const char *)); 189 #endif 190 void set_rpc_maxgrouplist __P((int)); 191 void usage __P((void)) __dead2; 192 int xdr_dir __P((XDR *, char *)); 193 int xdr_fh __P((XDR *, struct nfhret *)); 194 195 /* 196 * Used to set mount flags with getmntopts. Call with dir=TRUE to 197 * initialise altflags from the current mount flags. Call with 198 * dir=FALSE to update mount flags with the new value of altflags after 199 * the call to getmntopts. 200 */ 201 static void 202 setflags(int* altflags, int* nfsflags, int dir) 203 { 204 #define F2(af, nf) \ 205 if (dir) { \ 206 if (*nfsflags & NFSMNT_##nf) \ 207 *altflags |= ALTF_##af; \ 208 else \ 209 *altflags &= ~ALTF_##af; \ 210 } else { \ 211 if (*altflags & ALTF_##af) \ 212 *nfsflags |= NFSMNT_##nf; \ 213 else \ 214 *nfsflags &= ~NFSMNT_##nf; \ 215 } 216 #define F(f) F2(f,f) 217 218 F(NOCONN); 219 F(DUMBTIMR); 220 F2(INTR, INT); 221 #ifdef NFSKERB 222 F(KERB); 223 #endif 224 F(NFSV3); 225 F(RDIRPLUS); 226 F(RESVPORT); 227 F(NQNFS); 228 F(SOFT); 229 230 #undef F 231 #undef F2 232 } 233 234 int 235 main(argc, argv) 236 int argc; 237 char *argv[]; 238 { 239 register int c; 240 register struct nfs_args *nfsargsp; 241 struct nfs_args nfsargs; 242 struct nfsd_cargs ncd; 243 int mntflags, altflags, i, nfssvc_flag, num; 244 char *name, *p, *spec; 245 struct vfsconf vfc; 246 int error = 0; 247 #ifdef NFSKERB 248 uid_t last_ruid; 249 250 last_ruid = -1; 251 (void)strcpy(realm, KRB_REALM); 252 if (sizeof (struct nfsrpc_nickverf) != RPCX_NICKVERF || 253 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK || 254 ((char *)&ktick.kt) - ((char *)&ktick) != NFSX_UNSIGNED || 255 ((char *)ktick.kt.dat) - ((char *)&ktick) != 2 * NFSX_UNSIGNED) 256 fprintf(stderr, "Yikes! NFSKERB structs not packed!!\n"); 257 #endif /* NFSKERB */ 258 retrycnt = DEF_RETRY; 259 260 mntflags = 0; 261 altflags = 0; 262 nfsargs = nfsdefargs; 263 nfsargsp = &nfsargs; 264 while ((c = getopt(argc, argv, 265 "3a:bcdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:U")) != -1) 266 switch (c) { 267 case '3': 268 nfsargsp->flags |= NFSMNT_NFSV3; 269 break; 270 case 'a': 271 num = strtol(optarg, &p, 10); 272 if (*p || num < 0) 273 errx(1, "illegal -a value -- %s", optarg); 274 nfsargsp->readahead = num; 275 nfsargsp->flags |= NFSMNT_READAHEAD; 276 break; 277 case 'b': 278 opflags |= BGRND; 279 break; 280 case 'c': 281 nfsargsp->flags |= NFSMNT_NOCONN; 282 break; 283 case 'D': 284 num = strtol(optarg, &p, 10); 285 if (*p || num <= 0) 286 errx(1, "illegal -D value -- %s", optarg); 287 nfsargsp->deadthresh = num; 288 nfsargsp->flags |= NFSMNT_DEADTHRESH; 289 break; 290 case 'd': 291 nfsargsp->flags |= NFSMNT_DUMBTIMR; 292 break; 293 case 'g': 294 num = strtol(optarg, &p, 10); 295 if (*p || num <= 0) 296 errx(1, "illegal -g value -- %s", optarg); 297 #ifdef __FreeBSD__ 298 set_rpc_maxgrouplist(num); 299 #endif 300 nfsargsp->maxgrouplist = num; 301 nfsargsp->flags |= NFSMNT_MAXGRPS; 302 break; 303 case 'I': 304 num = strtol(optarg, &p, 10); 305 if (*p || num <= 0) 306 errx(1, "illegal -I value -- %s", optarg); 307 nfsargsp->readdirsize = num; 308 nfsargsp->flags |= NFSMNT_READDIRSIZE; 309 break; 310 case 'i': 311 nfsargsp->flags |= NFSMNT_INT; 312 break; 313 #ifdef NFSKERB 314 case 'K': 315 nfsargsp->flags |= NFSMNT_KERB; 316 break; 317 #endif 318 case 'L': 319 num = strtol(optarg, &p, 10); 320 if (*p || num < 2) 321 errx(1, "illegal -L value -- %s", optarg); 322 nfsargsp->leaseterm = num; 323 nfsargsp->flags |= NFSMNT_LEASETERM; 324 break; 325 case 'l': 326 nfsargsp->flags |= NFSMNT_RDIRPLUS; 327 break; 328 #ifdef NFSKERB 329 case 'm': 330 (void)strncpy(realm, optarg, REALM_SZ - 1); 331 realm[REALM_SZ - 1] = '\0'; 332 break; 333 #endif 334 case 'o': 335 altflags = 0; 336 setflags(&altflags, &nfsargsp->flags, TRUE); 337 getmntopts(optarg, mopts, &mntflags, &altflags); 338 setflags(&altflags, &nfsargsp->flags, FALSE); 339 /* 340 * Handle altflags which don't map directly to 341 * mount flags. 342 */ 343 if(altflags & ALTF_BG) 344 opflags |= BGRND; 345 if(altflags & ALTF_MNTUDP) 346 mnttcp_ok = 0; 347 #ifdef ISO 348 if(altflags & ALTF_SEQPACKET) 349 nfsargsp->sotype = SOCK_SEQPACKET; 350 #endif 351 if(altflags & ALTF_TCP) { 352 nfsargsp->sotype = SOCK_STREAM; 353 nfsproto = IPPROTO_TCP; 354 } 355 if(altflags & ALTF_PORT) 356 port_no = atoi(strstr(optarg, "port=") + 5); 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 nfsargsp->flags |= (NFSMNT_NQNFS | NFSMNT_NFSV3); 368 break; 369 case 'R': 370 num = strtol(optarg, &p, 10); 371 if (*p || num <= 0) 372 errx(1, "illegal -R value -- %s", optarg); 373 retrycnt = num; 374 break; 375 case 'r': 376 num = strtol(optarg, &p, 10); 377 if (*p || num <= 0) 378 errx(1, "illegal -r value -- %s", optarg); 379 nfsargsp->rsize = num; 380 nfsargsp->flags |= NFSMNT_RSIZE; 381 break; 382 case 's': 383 nfsargsp->flags |= NFSMNT_SOFT; 384 break; 385 case 'T': 386 nfsargsp->sotype = SOCK_STREAM; 387 nfsproto = IPPROTO_TCP; 388 break; 389 case 't': 390 num = strtol(optarg, &p, 10); 391 if (*p || num <= 0) 392 errx(1, "illegal -t value -- %s", optarg); 393 nfsargsp->timeo = num; 394 nfsargsp->flags |= NFSMNT_TIMEO; 395 break; 396 case 'w': 397 num = strtol(optarg, &p, 10); 398 if (*p || num <= 0) 399 errx(1, "illegal -w value -- %s", optarg); 400 nfsargsp->wsize = num; 401 nfsargsp->flags |= NFSMNT_WSIZE; 402 break; 403 case 'x': 404 num = strtol(optarg, &p, 10); 405 if (*p || num <= 0) 406 errx(1, "illegal -x value -- %s", optarg); 407 nfsargsp->retrans = num; 408 nfsargsp->flags |= NFSMNT_RETRANS; 409 break; 410 case 'U': 411 mnttcp_ok = 0; 412 break; 413 default: 414 usage(); 415 break; 416 } 417 argc -= optind; 418 argv += optind; 419 420 if (argc != 2) { 421 usage(); 422 /* NOTREACHED */ 423 } 424 425 spec = *argv++; 426 name = *argv; 427 428 if (!getnfsargs(spec, nfsargsp)) 429 exit(1); 430 431 #ifdef __FreeBSD__ 432 error = getvfsbyname("nfs", &vfc); 433 if (error && vfsisloadable("nfs")) { 434 if(vfsload("nfs")) 435 err(EX_OSERR, "vfsload(nfs)"); 436 endvfsent(); /* clear cache */ 437 error = getvfsbyname("nfs", &vfc); 438 } 439 if (error) 440 errx(EX_OSERR, "nfs filesystem is not available"); 441 442 if (mount(vfc.vfc_name, name, mntflags, nfsargsp)) 443 err(1, "%s", name); 444 #else 445 if (mount("nfs", name, mntflags, nfsargsp)) 446 err(1, "%s", name); 447 #endif 448 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 449 if ((opflags & ISBGRND) == 0) { 450 if (i = fork()) { 451 if (i == -1) 452 err(1, "nqnfs 1"); 453 exit(0); 454 } 455 (void) setsid(); 456 (void) close(STDIN_FILENO); 457 (void) close(STDOUT_FILENO); 458 (void) close(STDERR_FILENO); 459 (void) chdir("/"); 460 } 461 openlog("mount_nfs:", LOG_PID, LOG_DAEMON); 462 nfssvc_flag = NFSSVC_MNTD; 463 ncd.ncd_dirp = name; 464 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 465 if (errno != ENEEDAUTH) { 466 syslog(LOG_ERR, "nfssvc err %m"); 467 continue; 468 } 469 nfssvc_flag = 470 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 471 #ifdef NFSKERB 472 /* 473 * Set up as ncd_authuid for the kerberos call. 474 * Must set ruid to ncd_authuid and reset the 475 * ticket name iff ncd_authuid is not the same 476 * as last time, so that the right ticket file 477 * is found. 478 * Get the Kerberos credential structure so that 479 * we have the seesion key and get a ticket for 480 * this uid. 481 * For more info see the IETF Draft "Authentication 482 * in ONC RPC". 483 */ 484 if (ncd.ncd_authuid != last_ruid) { 485 char buf[512]; 486 (void)sprintf(buf, "%s%d", 487 TKT_ROOT, ncd.ncd_authuid); 488 krb_set_tkt_string(buf); 489 last_ruid = ncd.ncd_authuid; 490 } 491 setreuid(ncd.ncd_authuid, 0); 492 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 493 if (kret == RET_NOTKT) { 494 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 495 DEFAULT_TKT_LIFE); 496 if (kret == KSUCCESS) 497 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 498 &kcr); 499 } 500 if (kret == KSUCCESS) 501 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 502 realm, 0); 503 504 /* 505 * Fill in the AKN_FULLNAME authenticator and verfier. 506 * Along with the Kerberos ticket, we need to build 507 * the timestamp verifier and encrypt it in CBC mode. 508 */ 509 if (kret == KSUCCESS && 510 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 511 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 512 ncd.ncd_authtype = RPCAUTH_KERB4; 513 ncd.ncd_authstr = (u_char *)&ktick; 514 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 515 3 * NFSX_UNSIGNED; 516 ncd.ncd_verfstr = (u_char *)&kverf; 517 ncd.ncd_verflen = sizeof (kverf); 518 memmove(ncd.ncd_key, kcr.session, 519 sizeof (kcr.session)); 520 kin.t1 = htonl(ktv.tv_sec); 521 kin.t2 = htonl(ktv.tv_usec); 522 kin.w1 = htonl(NFS_KERBTTL); 523 kin.w2 = htonl(NFS_KERBTTL - 1); 524 bzero((caddr_t)kivec, sizeof (kivec)); 525 526 /* 527 * Encrypt kin in CBC mode using the session 528 * key in kcr. 529 */ 530 XXX 531 532 /* 533 * Finally, fill the timestamp verifier into the 534 * authenticator and verifier. 535 */ 536 ktick.kind = htonl(RPCAKN_FULLNAME); 537 kverf.kind = htonl(RPCAKN_FULLNAME); 538 NFS_KERBW1(ktick.kt) = kout.w1; 539 ktick.kt.length = htonl(ktick.kt.length); 540 kverf.verf.t1 = kout.t1; 541 kverf.verf.t2 = kout.t2; 542 kverf.verf.w2 = kout.w2; 543 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 544 } 545 setreuid(0, 0); 546 #endif /* NFSKERB */ 547 } 548 } 549 exit(0); 550 } 551 552 int 553 getnfsargs(spec, nfsargsp) 554 char *spec; 555 struct nfs_args *nfsargsp; 556 { 557 register CLIENT *clp; 558 struct hostent *hp; 559 static struct sockaddr_in saddr; 560 #ifdef ISO 561 static struct sockaddr_iso isoaddr; 562 struct iso_addr *isop; 563 int isoflag = 0; 564 #endif 565 struct timeval pertry, try; 566 enum clnt_stat clnt_stat; 567 int so = RPC_ANYSOCK, i, nfsvers, mntvers; 568 char *hostp, *delimp; 569 #ifdef NFSKERB 570 char *cp; 571 #endif 572 u_short tport; 573 static struct nfhret nfhret; 574 static char nam[MNAMELEN + 1]; 575 576 strncpy(nam, spec, MNAMELEN); 577 nam[MNAMELEN] = '\0'; 578 if ((delimp = strchr(spec, '@')) != NULL) { 579 hostp = delimp + 1; 580 } else if ((delimp = strchr(spec, ':')) != NULL) { 581 hostp = spec; 582 spec = delimp + 1; 583 } else { 584 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 585 return (0); 586 } 587 *delimp = '\0'; 588 /* 589 * DUMB!! Until the mount protocol works on iso transport, we must 590 * supply both an iso and an inet address for the host. 591 */ 592 #ifdef ISO 593 if (!strncmp(hostp, "iso=", 4)) { 594 u_short isoport; 595 596 hostp += 4; 597 isoflag++; 598 if ((delimp = strchr(hostp, '+')) == NULL) { 599 warnx("no iso+inet address"); 600 return (0); 601 } 602 *delimp = '\0'; 603 if ((isop = iso_addr(hostp)) == NULL) { 604 warnx("bad ISO address"); 605 return (0); 606 } 607 memset(&isoaddr, 0, sizeof (isoaddr)); 608 memmove(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 609 isoaddr.siso_len = sizeof (isoaddr); 610 isoaddr.siso_family = AF_ISO; 611 isoaddr.siso_tlen = 2; 612 isoport = htons(NFS_PORT); 613 memmove(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 614 hostp = delimp + 1; 615 } 616 #endif /* ISO */ 617 618 /* 619 * Handle an internet host address and reverse resolve it if 620 * doing Kerberos. 621 */ 622 if (isdigit(*hostp)) { 623 if ((saddr.sin_addr.s_addr = inet_addr(hostp)) == -1) { 624 warnx("bad net address %s", hostp); 625 return (0); 626 } 627 } else if ((hp = gethostbyname(hostp)) != NULL) 628 memmove(&saddr.sin_addr, hp->h_addr, hp->h_length); 629 else { 630 warnx("can't get net id for host"); 631 return (0); 632 } 633 #ifdef NFSKERB 634 if ((nfsargsp->flags & NFSMNT_KERB)) { 635 if ((hp = gethostbyaddr((char *)&saddr.sin_addr.s_addr, 636 sizeof (u_long), AF_INET)) == (struct hostent *)0) { 637 warnx("can't reverse resolve net address"); 638 return (0); 639 } 640 memmove(&saddr.sin_addr, hp->h_addr, hp->h_length); 641 strncpy(inst, hp->h_name, INST_SZ); 642 inst[INST_SZ - 1] = '\0'; 643 if (cp = strchr(inst, '.')) 644 *cp = '\0'; 645 } 646 #endif /* NFSKERB */ 647 648 if (nfsargsp->flags & NFSMNT_NFSV3) { 649 nfsvers = 3; 650 mntvers = 3; 651 } else { 652 nfsvers = 2; 653 mntvers = 1; 654 } 655 nfhret.stat = EACCES; /* Mark not yet successful */ 656 while (retrycnt > 0) { 657 saddr.sin_family = AF_INET; 658 saddr.sin_port = htons(PMAPPORT); 659 if ((tport = port_no ? port_no : 660 pmap_getport(&saddr, RPCPROG_NFS, 661 nfsvers, nfsproto)) == 0) { 662 if ((opflags & ISBGRND) == 0) 663 clnt_pcreateerror("NFS Portmap"); 664 } else { 665 saddr.sin_port = 0; 666 pertry.tv_sec = 10; 667 pertry.tv_usec = 0; 668 if (mnttcp_ok && nfsargsp->sotype == SOCK_STREAM) 669 clp = clnttcp_create(&saddr, RPCPROG_MNT, mntvers, 670 &so, 0, 0); 671 else 672 clp = clntudp_create(&saddr, RPCPROG_MNT, mntvers, 673 pertry, &so); 674 if (clp == NULL) { 675 if ((opflags & ISBGRND) == 0) 676 clnt_pcreateerror("Cannot MNT RPC"); 677 } else { 678 clp->cl_auth = authunix_create_default(); 679 try.tv_sec = 10; 680 try.tv_usec = 0; 681 if (nfsargsp->flags & NFSMNT_KERB) 682 nfhret.auth = RPCAUTH_KERB4; 683 else 684 nfhret.auth = RPCAUTH_UNIX; 685 nfhret.vers = mntvers; 686 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 687 xdr_dir, spec, xdr_fh, &nfhret, try); 688 if (clnt_stat != RPC_SUCCESS) { 689 if ((opflags & ISBGRND) == 0) 690 warnx("%s", clnt_sperror(clp, 691 "bad MNT RPC")); 692 } else { 693 auth_destroy(clp->cl_auth); 694 clnt_destroy(clp); 695 retrycnt = 0; 696 } 697 } 698 } 699 if (--retrycnt > 0) { 700 if (opflags & BGRND) { 701 opflags &= ~BGRND; 702 if (i = fork()) { 703 if (i == -1) 704 err(1, "nqnfs 2"); 705 exit(0); 706 } 707 (void) setsid(); 708 (void) close(STDIN_FILENO); 709 (void) close(STDOUT_FILENO); 710 (void) close(STDERR_FILENO); 711 (void) chdir("/"); 712 opflags |= ISBGRND; 713 } 714 sleep(60); 715 } 716 } 717 if (nfhret.stat) { 718 if (opflags & ISBGRND) 719 exit(1); 720 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 721 return (0); 722 } 723 saddr.sin_port = htons(tport); 724 #ifdef ISO 725 if (isoflag) { 726 nfsargsp->addr = (struct sockaddr *) &isoaddr; 727 nfsargsp->addrlen = sizeof (isoaddr); 728 } else 729 #endif /* ISO */ 730 { 731 nfsargsp->addr = (struct sockaddr *) &saddr; 732 nfsargsp->addrlen = sizeof (saddr); 733 } 734 nfsargsp->fh = nfhret.nfh; 735 nfsargsp->fhsize = nfhret.fhsize; 736 nfsargsp->hostname = nam; 737 return (1); 738 } 739 740 /* 741 * xdr routines for mount rpc's 742 */ 743 int 744 xdr_dir(xdrsp, dirp) 745 XDR *xdrsp; 746 char *dirp; 747 { 748 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 749 } 750 751 int 752 xdr_fh(xdrsp, np) 753 XDR *xdrsp; 754 register struct nfhret *np; 755 { 756 register int i; 757 long auth, authcnt, authfnd = 0; 758 759 if (!xdr_u_long(xdrsp, &np->stat)) 760 return (0); 761 if (np->stat) 762 return (1); 763 switch (np->vers) { 764 case 1: 765 np->fhsize = NFSX_V2FH; 766 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 767 case 3: 768 if (!xdr_long(xdrsp, &np->fhsize)) 769 return (0); 770 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 771 return (0); 772 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 773 return (0); 774 if (!xdr_long(xdrsp, &authcnt)) 775 return (0); 776 for (i = 0; i < authcnt; i++) { 777 if (!xdr_long(xdrsp, &auth)) 778 return (0); 779 if (auth == np->auth) 780 authfnd++; 781 } 782 /* 783 * Some servers, such as DEC's OSF/1 return a nil authenticator 784 * list to indicate RPCAUTH_UNIX. 785 */ 786 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 787 np->stat = EAUTH; 788 return (1); 789 }; 790 return (0); 791 } 792 793 void 794 usage() 795 { 796 (void)fprintf(stderr, "\ 797 usage: mount_nfs [-3KPTUbcdilqs] [-D deadthresh] [-I readdirsize]\n\ 798 [-L leaseterm] [-R retrycnt] [-a maxreadahead] [-g maxgroups]\n\ 799 [-m realm] [-o options] [-r readsize] [-t timeout] [-w writesize]\n\ 800 [-x retrans] rhost:path node\n"); 801 exit(1); 802 } 803