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 8.3 (Berkeley) 3/27/94"; 46 */ 47 static const char rcsid[] = 48 "$Id: mount_nfs.c,v 1.13 1996/05/13 17:43:06 wollman 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 <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 #ifdef __FreeBSD__ 95 #define ALTF_BG 0x1 96 #define ALTF_NOCONN 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_PORT 0x2000 109 110 struct mntopt mopts[] = { 111 MOPT_STDOPTS, 112 MOPT_FORCE, 113 MOPT_UPDATE, 114 { "bg", 0, ALTF_BG, 1 }, 115 { "conn", 1, ALTF_NOCONN, 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 { "port=", 0, ALTF_PORT, 1 }, 132 { NULL } 133 }; 134 #else 135 struct mntopt mopts[] = { 136 MOPT_STDOPTS, 137 MOPT_FORCE, 138 MOPT_UPDATE, 139 { NULL } 140 }; 141 #endif 142 143 struct nfs_args nfsdefargs = { 144 (struct sockaddr *)0, 145 sizeof (struct sockaddr_in), 146 SOCK_DGRAM, 147 0, 148 (u_char *)0, 149 0, 150 0, 151 NFS_WSIZE, 152 NFS_RSIZE, 153 NFS_READDIRSIZE, 154 10, 155 NFS_RETRANS, 156 NFS_MAXGRPS, 157 NFS_DEFRAHEAD, 158 NQ_DEFLEASE, 159 NQ_DEADTHRESH, 160 (char *)0, 161 }; 162 163 struct nfhret { 164 u_long stat; 165 long vers; 166 long auth; 167 long fhsize; 168 u_char nfh[NFSX_V3FHMAX]; 169 }; 170 #define DEF_RETRY 10000 171 #define BGRND 1 172 #define ISBGRND 2 173 int retrycnt = DEF_RETRY; 174 int opflags = 0; 175 int nfsproto = IPPROTO_UDP; 176 int mnttcp_ok = 1; 177 u_short port_no = 0; 178 179 #ifdef NFSKERB 180 char inst[INST_SZ]; 181 char realm[REALM_SZ]; 182 struct { 183 u_long kind; 184 KTEXT_ST kt; 185 } ktick; 186 struct nfsrpc_nickverf kverf; 187 struct nfsrpc_fullblock kin, kout; 188 NFSKERBKEY_T kivec; 189 CREDENTIALS kcr; 190 struct timeval ktv; 191 NFSKERBKEYSCHED_T kerb_keysched; 192 #endif 193 194 int getnfsargs __P((char *, struct nfs_args *)); 195 #ifdef ISO 196 struct iso_addr *iso_addr __P((const char *)); 197 #endif 198 void set_rpc_maxgrouplist __P((int)); 199 void usage __P((void)) __dead2; 200 int xdr_dir __P((XDR *, char *)); 201 int xdr_fh __P((XDR *, struct nfhret *)); 202 203 int 204 main(argc, argv) 205 int argc; 206 char *argv[]; 207 { 208 register int c; 209 register struct nfs_args *nfsargsp; 210 struct nfs_args nfsargs; 211 struct nfsd_cargs ncd; 212 int mntflags, altflags, i, nfssvc_flag, num; 213 char *name, *p, *spec; 214 struct vfsconf *vfc; 215 #ifdef NFSKERB 216 uid_t last_ruid; 217 218 last_ruid = -1; 219 (void)strcpy(realm, KRB_REALM); 220 if (sizeof (struct nfsrpc_nickverf) != RPCX_NICKVERF || 221 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK || 222 ((char *)&ktick.kt) - ((char *)&ktick) != NFSX_UNSIGNED || 223 ((char *)ktick.kt.dat) - ((char *)&ktick) != 2 * NFSX_UNSIGNED) 224 fprintf(stderr, "Yikes! NFSKERB structs not packed!!\n"); 225 #endif /* NFSKERB */ 226 retrycnt = DEF_RETRY; 227 228 mntflags = 0; 229 altflags = 0; 230 nfsargs = nfsdefargs; 231 nfsargsp = &nfsargs; 232 while ((c = getopt(argc, argv, 233 "3a:bcdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:U")) != EOF) 234 switch (c) { 235 case '3': 236 nfsargsp->flags |= NFSMNT_NFSV3; 237 break; 238 case 'a': 239 num = strtol(optarg, &p, 10); 240 if (*p || num < 0) 241 errx(1, "illegal -a value -- %s", optarg); 242 nfsargsp->readahead = num; 243 nfsargsp->flags |= NFSMNT_READAHEAD; 244 break; 245 case 'b': 246 opflags |= BGRND; 247 break; 248 case 'c': 249 nfsargsp->flags |= NFSMNT_NOCONN; 250 break; 251 case 'D': 252 num = strtol(optarg, &p, 10); 253 if (*p || num <= 0) 254 errx(1, "illegal -D value -- %s", optarg); 255 nfsargsp->deadthresh = num; 256 nfsargsp->flags |= NFSMNT_DEADTHRESH; 257 break; 258 case 'd': 259 nfsargsp->flags |= NFSMNT_DUMBTIMR; 260 break; 261 case 'g': 262 num = strtol(optarg, &p, 10); 263 if (*p || num <= 0) 264 errx(1, "illegal -g value -- %s", optarg); 265 #ifdef __FreeBSD__ 266 set_rpc_maxgrouplist(num); 267 #endif 268 nfsargsp->maxgrouplist = num; 269 nfsargsp->flags |= NFSMNT_MAXGRPS; 270 break; 271 case 'I': 272 num = strtol(optarg, &p, 10); 273 if (*p || num <= 0) 274 errx(1, "illegal -I value -- %s", optarg); 275 nfsargsp->readdirsize = num; 276 nfsargsp->flags |= NFSMNT_READDIRSIZE; 277 break; 278 case 'i': 279 nfsargsp->flags |= NFSMNT_INT; 280 break; 281 #ifdef NFSKERB 282 case 'K': 283 nfsargsp->flags |= NFSMNT_KERB; 284 break; 285 #endif 286 case 'L': 287 num = strtol(optarg, &p, 10); 288 if (*p || num < 2) 289 errx(1, "illegal -L value -- %s", optarg); 290 nfsargsp->leaseterm = num; 291 nfsargsp->flags |= NFSMNT_LEASETERM; 292 break; 293 case 'l': 294 nfsargsp->flags |= NFSMNT_RDIRPLUS; 295 break; 296 #ifdef NFSKERB 297 case 'm': 298 (void)strncpy(realm, optarg, REALM_SZ - 1); 299 realm[REALM_SZ - 1] = '\0'; 300 break; 301 #endif 302 case 'o': 303 #ifdef __FreeBSD__ 304 getmntopts(optarg, mopts, &mntflags, &altflags); 305 if(altflags & ALTF_BG) 306 opflags |= BGRND; 307 if(altflags & ALTF_NOCONN) 308 nfsargsp->flags |= NFSMNT_NOCONN; 309 if(altflags & ALTF_DUMBTIMR) 310 nfsargsp->flags |= NFSMNT_DUMBTIMR; 311 if(altflags & ALTF_INTR) 312 nfsargsp->flags |= NFSMNT_INT; 313 #ifdef NFSKERB 314 if(altflags & ALTF_KERB) 315 nfsargsp->flags |= NFSMNT_KERB; 316 #endif 317 if(altflags & ALTF_NFSV3) 318 nfsargsp->flags |= NFSMNT_NFSV3; 319 if(altflags & ALTF_RDIRPLUS) 320 nfsargsp->flags |= NFSMNT_RDIRPLUS; 321 if(altflags & ALTF_MNTUDP) 322 mnttcp_ok = 0; 323 if(altflags & ALTF_RESVPORT) 324 nfsargsp->flags |= NFSMNT_RESVPORT; 325 #ifdef ISO 326 if(altflags & ALTF_SEQPACKET) 327 nfsargsp->sotype = SOCK_SEQPACKET; 328 #endif 329 if(altflags & ALTF_NQNFS) 330 nfsargsp->flags |= (NFSMNT_NQNFS|NFSMNT_NFSV3); 331 if(altflags & ALTF_SOFT) 332 nfsargsp->flags |= NFSMNT_SOFT; 333 if(altflags & ALTF_TCP) { 334 nfsargsp->sotype = SOCK_STREAM; 335 nfsproto = IPPROTO_TCP; 336 } 337 if(altflags & ALTF_PORT) 338 port_no = atoi(strstr(optarg, "port=") + 5); 339 altflags = 0; 340 #else 341 getmntopts(optarg, mopts, &mntflags); 342 #endif 343 break; 344 case 'P': 345 nfsargsp->flags |= NFSMNT_RESVPORT; 346 break; 347 #ifdef ISO 348 case 'p': 349 nfsargsp->sotype = SOCK_SEQPACKET; 350 break; 351 #endif 352 case 'q': 353 nfsargsp->flags |= (NFSMNT_NQNFS | NFSMNT_NFSV3); 354 break; 355 case 'R': 356 num = strtol(optarg, &p, 10); 357 if (*p || num <= 0) 358 errx(1, "illegal -R value -- %s", optarg); 359 retrycnt = num; 360 break; 361 case 'r': 362 num = strtol(optarg, &p, 10); 363 if (*p || num <= 0) 364 errx(1, "illegal -r value -- %s", optarg); 365 nfsargsp->rsize = num; 366 nfsargsp->flags |= NFSMNT_RSIZE; 367 break; 368 case 's': 369 nfsargsp->flags |= NFSMNT_SOFT; 370 break; 371 case 'T': 372 nfsargsp->sotype = SOCK_STREAM; 373 nfsproto = IPPROTO_TCP; 374 break; 375 case 't': 376 num = strtol(optarg, &p, 10); 377 if (*p || num <= 0) 378 errx(1, "illegal -t value -- %s", optarg); 379 nfsargsp->timeo = num; 380 nfsargsp->flags |= NFSMNT_TIMEO; 381 break; 382 case 'w': 383 num = strtol(optarg, &p, 10); 384 if (*p || num <= 0) 385 errx(1, "illegal -w value -- %s", optarg); 386 nfsargsp->wsize = num; 387 nfsargsp->flags |= NFSMNT_WSIZE; 388 break; 389 case 'x': 390 num = strtol(optarg, &p, 10); 391 if (*p || num <= 0) 392 errx(1, "illegal -x value -- %s", optarg); 393 nfsargsp->retrans = num; 394 nfsargsp->flags |= NFSMNT_RETRANS; 395 break; 396 case 'U': 397 mnttcp_ok = 0; 398 break; 399 default: 400 usage(); 401 break; 402 } 403 argc -= optind; 404 argv += optind; 405 406 if (argc != 2) 407 usage(); 408 409 spec = *argv++; 410 name = *argv; 411 412 if (!getnfsargs(spec, nfsargsp)) 413 exit(1); 414 415 #ifdef __FreeBSD__ 416 vfc = getvfsbyname("nfs"); 417 if(!vfc && vfsisloadable("nfs")) { 418 if(vfsload("nfs")) 419 err(EX_OSERR, "vfsload(nfs)"); 420 endvfsent(); /* flush cache */ 421 vfc = getvfsbyname("nfs"); 422 } 423 if (!vfc) 424 errx(EX_OSERR, "nfs filesystem is not loadable"); 425 426 if (mount(vfc->vfc_index, name, mntflags, nfsargsp)) 427 #else 428 if (mount(MOUNT_NFS, name, mntflags, nfsargsp)) 429 #endif 430 err(1, "%s", name); 431 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 432 if ((opflags & ISBGRND) == 0) { 433 if (i = fork()) { 434 if (i == -1) 435 err(1, "nqnfs 1"); 436 exit(0); 437 } 438 (void) setsid(); 439 (void) close(STDIN_FILENO); 440 (void) close(STDOUT_FILENO); 441 (void) close(STDERR_FILENO); 442 (void) chdir("/"); 443 } 444 openlog("mount_nfs:", LOG_PID, LOG_DAEMON); 445 nfssvc_flag = NFSSVC_MNTD; 446 ncd.ncd_dirp = name; 447 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 448 if (errno != ENEEDAUTH) { 449 syslog(LOG_ERR, "nfssvc err %m"); 450 continue; 451 } 452 nfssvc_flag = 453 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 454 #ifdef NFSKERB 455 /* 456 * Set up as ncd_authuid for the kerberos call. 457 * Must set ruid to ncd_authuid and reset the 458 * ticket name iff ncd_authuid is not the same 459 * as last time, so that the right ticket file 460 * is found. 461 * Get the Kerberos credential structure so that 462 * we have the seesion key and get a ticket for 463 * this uid. 464 * For more info see the IETF Draft "Authentication 465 * in ONC RPC". 466 */ 467 if (ncd.ncd_authuid != last_ruid) { 468 char buf[512]; 469 (void)sprintf(buf, "%s%d", 470 TKT_ROOT, ncd.ncd_authuid); 471 krb_set_tkt_string(buf); 472 last_ruid = ncd.ncd_authuid; 473 } 474 setreuid(ncd.ncd_authuid, 0); 475 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 476 if (kret == RET_NOTKT) { 477 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 478 DEFAULT_TKT_LIFE); 479 if (kret == KSUCCESS) 480 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 481 &kcr); 482 } 483 if (kret == KSUCCESS) 484 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 485 realm, 0); 486 487 /* 488 * Fill in the AKN_FULLNAME authenticator and verfier. 489 * Along with the Kerberos ticket, we need to build 490 * the timestamp verifier and encrypt it in CBC mode. 491 */ 492 if (kret == KSUCCESS && 493 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 494 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 495 ncd.ncd_authtype = RPCAUTH_KERB4; 496 ncd.ncd_authstr = (u_char *)&ktick; 497 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 498 3 * NFSX_UNSIGNED; 499 ncd.ncd_verfstr = (u_char *)&kverf; 500 ncd.ncd_verflen = sizeof (kverf); 501 bcopy((caddr_t)kcr.session, (caddr_t)ncd.ncd_key, 502 sizeof (kcr.session)); 503 kin.t1 = htonl(ktv.tv_sec); 504 kin.t2 = htonl(ktv.tv_usec); 505 kin.w1 = htonl(NFS_KERBTTL); 506 kin.w2 = htonl(NFS_KERBTTL - 1); 507 bzero((caddr_t)kivec, sizeof (kivec)); 508 509 /* 510 * Encrypt kin in CBC mode using the session 511 * key in kcr. 512 */ 513 XXX 514 515 /* 516 * Finally, fill the timestamp verifier into the 517 * authenticator and verifier. 518 */ 519 ktick.kind = htonl(RPCAKN_FULLNAME); 520 kverf.kind = htonl(RPCAKN_FULLNAME); 521 NFS_KERBW1(ktick.kt) = kout.w1; 522 ktick.kt.length = htonl(ktick.kt.length); 523 kverf.verf.t1 = kout.t1; 524 kverf.verf.t2 = kout.t2; 525 kverf.verf.w2 = kout.w2; 526 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 527 } 528 setreuid(0, 0); 529 #endif /* NFSKERB */ 530 } 531 } 532 exit(0); 533 } 534 535 int 536 getnfsargs(spec, nfsargsp) 537 char *spec; 538 struct nfs_args *nfsargsp; 539 { 540 register CLIENT *clp; 541 struct hostent *hp; 542 static struct sockaddr_in saddr; 543 #ifdef ISO 544 static struct sockaddr_iso isoaddr; 545 struct iso_addr *isop; 546 int isoflag = 0; 547 #endif 548 struct timeval pertry, try; 549 enum clnt_stat clnt_stat; 550 int so = RPC_ANYSOCK, i, nfsvers, mntvers; 551 char *hostp, *delimp; 552 #ifdef NFSKERB 553 char *cp; 554 #endif 555 u_short tport; 556 static struct nfhret nfhret; 557 static char nam[MNAMELEN + 1]; 558 559 strncpy(nam, spec, MNAMELEN); 560 nam[MNAMELEN] = '\0'; 561 if ((delimp = strchr(spec, '@')) != NULL) { 562 hostp = delimp + 1; 563 } else if ((delimp = strchr(spec, ':')) != NULL) { 564 hostp = spec; 565 spec = delimp + 1; 566 } else { 567 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 568 return (0); 569 } 570 *delimp = '\0'; 571 /* 572 * DUMB!! Until the mount protocol works on iso transport, we must 573 * supply both an iso and an inet address for the host. 574 */ 575 #ifdef ISO 576 if (!strncmp(hostp, "iso=", 4)) { 577 u_short isoport; 578 579 hostp += 4; 580 isoflag++; 581 if ((delimp = strchr(hostp, '+')) == NULL) { 582 warnx("no iso+inet address"); 583 return (0); 584 } 585 *delimp = '\0'; 586 if ((isop = iso_addr(hostp)) == NULL) { 587 warnx("bad ISO address"); 588 return (0); 589 } 590 bzero((caddr_t)&isoaddr, sizeof (isoaddr)); 591 bcopy((caddr_t)isop, (caddr_t)&isoaddr.siso_addr, 592 sizeof (struct iso_addr)); 593 isoaddr.siso_len = sizeof (isoaddr); 594 isoaddr.siso_family = AF_ISO; 595 isoaddr.siso_tlen = 2; 596 isoport = htons(NFS_PORT); 597 bcopy((caddr_t)&isoport, TSEL(&isoaddr), isoaddr.siso_tlen); 598 hostp = delimp + 1; 599 } 600 #endif /* ISO */ 601 602 /* 603 * Handle an internet host address and reverse resolve it if 604 * doing Kerberos. 605 */ 606 if (isdigit(*hostp)) { 607 if ((saddr.sin_addr.s_addr = inet_addr(hostp)) == -1) { 608 warnx("bad net address %s", hostp); 609 return (0); 610 } 611 } else if ((hp = gethostbyname(hostp)) != NULL) { 612 bcopy(hp->h_addr, (caddr_t)&saddr.sin_addr, hp->h_length); 613 } else { 614 warnx("can't get net id for host"); 615 return (0); 616 } 617 #ifdef NFSKERB 618 if ((nfsargsp->flags & NFSMNT_KERB)) { 619 if ((hp = gethostbyaddr((char *)&saddr.sin_addr.s_addr, 620 sizeof (u_long), AF_INET)) == (struct hostent *)0) { 621 warnx("can't reverse resolve net address"); 622 return (0); 623 } 624 bcopy(hp->h_addr, (caddr_t)&saddr.sin_addr, hp->h_length); 625 strncpy(inst, hp->h_name, INST_SZ); 626 inst[INST_SZ - 1] = '\0'; 627 if (cp = strchr(inst, '.')) 628 *cp = '\0'; 629 } 630 #endif /* NFSKERB */ 631 632 if (nfsargsp->flags & NFSMNT_NFSV3) { 633 nfsvers = 3; 634 mntvers = 3; 635 } else { 636 nfsvers = 2; 637 mntvers = 1; 638 } 639 nfhret.stat = EACCES; /* Mark not yet successful */ 640 while (retrycnt > 0) { 641 saddr.sin_family = AF_INET; 642 saddr.sin_port = htons(PMAPPORT); 643 if ((tport = port_no ? port_no : 644 pmap_getport(&saddr, RPCPROG_NFS, 645 nfsvers, nfsproto)) == 0) { 646 if ((opflags & ISBGRND) == 0) 647 clnt_pcreateerror("NFS Portmap"); 648 } else { 649 saddr.sin_port = 0; 650 pertry.tv_sec = 10; 651 pertry.tv_usec = 0; 652 if (mnttcp_ok && nfsargsp->sotype == SOCK_STREAM) 653 clp = clnttcp_create(&saddr, RPCPROG_MNT, mntvers, 654 &so, 0, 0); 655 else 656 clp = clntudp_create(&saddr, RPCPROG_MNT, mntvers, 657 pertry, &so); 658 if (clp == NULL) { 659 if ((opflags & ISBGRND) == 0) 660 clnt_pcreateerror("Cannot MNT RPC"); 661 } else { 662 clp->cl_auth = authunix_create_default(); 663 try.tv_sec = 10; 664 try.tv_usec = 0; 665 if (nfsargsp->flags & NFSMNT_KERB) 666 nfhret.auth = RPCAUTH_KERB4; 667 else 668 nfhret.auth = RPCAUTH_UNIX; 669 nfhret.vers = mntvers; 670 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 671 xdr_dir, spec, xdr_fh, &nfhret, try); 672 if (clnt_stat != RPC_SUCCESS) { 673 if ((opflags & ISBGRND) == 0) 674 warnx("%s", clnt_sperror(clp, 675 "bad MNT RPC")); 676 } else { 677 auth_destroy(clp->cl_auth); 678 clnt_destroy(clp); 679 retrycnt = 0; 680 } 681 } 682 } 683 if (--retrycnt > 0) { 684 if (opflags & BGRND) { 685 opflags &= ~BGRND; 686 if (i = fork()) { 687 if (i == -1) 688 err(1, "nqnfs 2"); 689 exit(0); 690 } 691 (void) setsid(); 692 (void) close(STDIN_FILENO); 693 (void) close(STDOUT_FILENO); 694 (void) close(STDERR_FILENO); 695 (void) chdir("/"); 696 opflags |= ISBGRND; 697 } 698 sleep(60); 699 } 700 } 701 if (nfhret.stat) { 702 if (opflags & ISBGRND) 703 exit(1); 704 errno = nfhret.stat; 705 warn("can't access %s", spec); 706 return (0); 707 } 708 saddr.sin_port = htons(tport); 709 #ifdef ISO 710 if (isoflag) { 711 nfsargsp->addr = (struct sockaddr *) &isoaddr; 712 nfsargsp->addrlen = sizeof (isoaddr); 713 } else 714 #endif /* ISO */ 715 { 716 nfsargsp->addr = (struct sockaddr *) &saddr; 717 nfsargsp->addrlen = sizeof (saddr); 718 } 719 nfsargsp->fh = nfhret.nfh; 720 nfsargsp->fhsize = nfhret.fhsize; 721 nfsargsp->hostname = nam; 722 return (1); 723 } 724 725 /* 726 * xdr routines for mount rpc's 727 */ 728 int 729 xdr_dir(xdrsp, dirp) 730 XDR *xdrsp; 731 char *dirp; 732 { 733 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 734 } 735 736 int 737 xdr_fh(xdrsp, np) 738 XDR *xdrsp; 739 register struct nfhret *np; 740 { 741 register int i; 742 long auth, authcnt, authfnd = 0; 743 744 if (!xdr_u_long(xdrsp, &np->stat)) 745 return (0); 746 if (np->stat) 747 return (1); 748 switch (np->vers) { 749 case 1: 750 np->fhsize = NFSX_V2FH; 751 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 752 case 3: 753 if (!xdr_long(xdrsp, &np->fhsize)) 754 return (0); 755 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 756 return (0); 757 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 758 return (0); 759 if (!xdr_long(xdrsp, &authcnt)) 760 return (0); 761 for (i = 0; i < authcnt; i++) { 762 if (!xdr_long(xdrsp, &auth)) 763 return (0); 764 if (auth == np->auth) 765 authfnd++; 766 } 767 768 /* 769 * Some servers, such as DEC's OSF/1 return a nil authenticator 770 * list to indicate RPCAUTH_UNIX. 771 */ 772 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 773 np->stat = EAUTH; 774 return (1); 775 }; 776 return (0); 777 } 778 779 void 780 usage() 781 { 782 (void)fprintf(stderr, "\ 783 usage: mount_nfs [-3KPTUbcdilqs] [-D deadthresh] [-I readdirsize]\n\ 784 [-L leaseterm] [-R retrycnt] [-a maxreadahead] [-g maxgroups]\n\ 785 [-m realm] [-o options] [-r readsize] [-t timeout] [-w writesize]\n\ 786 [-x retrans] rhost:path node\n"); 787 exit(1); 788 } 789