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 static char sccsid[] = "@(#)mount_nfs.c 8.3 (Berkeley) 3/27/94"; 45 #endif /* not lint */ 46 47 #include <sys/param.h> 48 #include <sys/mount.h> 49 #include <sys/socket.h> 50 #include <sys/socketvar.h> 51 #include <sys/stat.h> 52 #include <sys/syslog.h> 53 54 #include <rpc/rpc.h> 55 #include <rpc/pmap_clnt.h> 56 #include <rpc/pmap_prot.h> 57 58 #ifdef ISO 59 #include <netiso/iso.h> 60 #endif 61 62 #ifdef NFSKERB 63 #include <kerberosIV/des.h> 64 #include <kerberosIV/krb.h> 65 #endif 66 67 #include <nfs/rpcv2.h> 68 #include <nfs/nfsproto.h> 69 #define _KERNEL 70 #include <nfs/nfs.h> 71 #undef _KERNEL 72 #include <nfs/nqnfs.h> 73 74 #include <arpa/inet.h> 75 76 #include <ctype.h> 77 #include <err.h> 78 #include <errno.h> 79 #include <fcntl.h> 80 #include <netdb.h> 81 #include <signal.h> 82 #include <stdio.h> 83 #include <stdlib.h> 84 #include <strings.h> 85 #include <unistd.h> 86 87 #include "mntopts.h" 88 89 #ifdef __FreeBSD__ 90 #define ALTF_BG 0x1 91 #define ALTF_NOCONN 0x2 92 #define ALTF_DUMBTIMR 0x4 93 #define ALTF_INTR 0x8 94 #define ALTF_KERB 0x10 95 #define ALTF_NFSV3 0x20 96 #define ALTF_RDIRPLUS 0x40 97 #define ALTF_MNTUDP 0x80 98 #define ALTF_RESVPORT 0x100 99 #define ALTF_SEQPACKET 0x200 100 #define ALTF_NQNFS 0x400 101 #define ALTF_SOFT 0x800 102 #define ALTF_TCP 0x1000 103 #define ALTF_PORT 0x2000 104 105 struct mntopt mopts[] = { 106 MOPT_STDOPTS, 107 MOPT_FORCE, 108 MOPT_UPDATE, 109 { "bg", 0, ALTF_BG, 1 }, 110 { "conn", 1, ALTF_NOCONN, 1 }, 111 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 112 { "intr", 0, ALTF_INTR, 1 }, 113 #ifdef NFSKERB 114 { "kerb", 0, ALTF_KERB, 1 }, 115 #endif 116 { "nfsv3", 0, ALTF_NFSV3, 1 }, 117 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 118 { "mntudp", 0, ALTF_MNTUDP, 1 }, 119 { "resvport", 0, ALTF_RESVPORT, 1 }, 120 #ifdef ISO 121 { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 122 #endif 123 { "nqnfs", 0, ALTF_NQNFS, 1 }, 124 { "soft", 0, ALTF_SOFT, 1 }, 125 { "tcp", 0, ALTF_TCP, 1 }, 126 { "port=", 0, ALTF_PORT, 1 }, 127 { NULL } 128 }; 129 #else 130 struct mntopt mopts[] = { 131 MOPT_STDOPTS, 132 MOPT_FORCE, 133 MOPT_UPDATE, 134 { NULL } 135 }; 136 #endif 137 138 struct nfs_args nfsdefargs = { 139 (struct sockaddr *)0, 140 sizeof (struct sockaddr_in), 141 SOCK_DGRAM, 142 0, 143 (u_char *)0, 144 0, 145 0, 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 = DEF_RETRY; 169 int opflags = 0; 170 int nfsproto = IPPROTO_UDP; 171 int mnttcp_ok = 1; 172 u_short port_no = 0; 173 174 #ifdef NFSKERB 175 char inst[INST_SZ]; 176 char realm[REALM_SZ]; 177 struct { 178 u_long kind; 179 KTEXT_ST kt; 180 } ktick; 181 struct nfsrpc_nickverf kverf; 182 struct nfsrpc_fullblock kin, kout; 183 NFSKERBKEY_T kivec; 184 CREDENTIALS kcr; 185 struct timeval ktv; 186 NFSKERBKEYSCHED_T kerb_keysched; 187 #endif 188 189 int getnfsargs __P((char *, struct nfs_args *)); 190 #ifdef ISO 191 struct iso_addr *iso_addr __P((const char *)); 192 #endif 193 void set_rpc_maxgrouplist __P((int)); 194 __dead void usage __P((void)); 195 int xdr_dir __P((XDR *, char *)); 196 int xdr_fh __P((XDR *, struct nfhret *)); 197 198 int 199 main(argc, argv) 200 int argc; 201 char *argv[]; 202 { 203 register int c; 204 register struct nfs_args *nfsargsp; 205 struct nfs_args nfsargs; 206 struct nfsd_cargs ncd; 207 int mntflags, altflags, i, nfssvc_flag, num; 208 char *name, *p, *spec; 209 struct vfsconf *vfc; 210 #ifdef NFSKERB 211 uid_t last_ruid; 212 213 last_ruid = -1; 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 #endif /* NFSKERB */ 221 retrycnt = DEF_RETRY; 222 223 mntflags = 0; 224 altflags = 0; 225 nfsargs = nfsdefargs; 226 nfsargsp = &nfsargs; 227 while ((c = getopt(argc, argv, 228 "3a:bcdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:U")) != EOF) 229 switch (c) { 230 case '3': 231 nfsargsp->flags |= NFSMNT_NFSV3; 232 break; 233 case 'a': 234 num = strtol(optarg, &p, 10); 235 if (*p || num < 0) 236 errx(1, "illegal -a value -- %s", optarg); 237 nfsargsp->readahead = num; 238 nfsargsp->flags |= NFSMNT_READAHEAD; 239 break; 240 case 'b': 241 opflags |= BGRND; 242 break; 243 case 'c': 244 nfsargsp->flags |= NFSMNT_NOCONN; 245 break; 246 case 'D': 247 num = strtol(optarg, &p, 10); 248 if (*p || num <= 0) 249 errx(1, "illegal -D value -- %s", optarg); 250 nfsargsp->deadthresh = num; 251 nfsargsp->flags |= NFSMNT_DEADTHRESH; 252 break; 253 case 'd': 254 nfsargsp->flags |= NFSMNT_DUMBTIMR; 255 break; 256 case 'g': 257 num = strtol(optarg, &p, 10); 258 if (*p || num <= 0) 259 errx(1, "illegal -g value -- %s", optarg); 260 #ifdef __FreeBSD__ 261 set_rpc_maxgrouplist(num); 262 #endif 263 nfsargsp->maxgrouplist = num; 264 nfsargsp->flags |= NFSMNT_MAXGRPS; 265 break; 266 case 'I': 267 num = strtol(optarg, &p, 10); 268 if (*p || num <= 0) 269 errx(1, "illegal -I value -- %s", optarg); 270 nfsargsp->readdirsize = num; 271 nfsargsp->flags |= NFSMNT_READDIRSIZE; 272 break; 273 case 'i': 274 nfsargsp->flags |= NFSMNT_INT; 275 break; 276 #ifdef NFSKERB 277 case 'K': 278 nfsargsp->flags |= NFSMNT_KERB; 279 break; 280 #endif 281 case 'L': 282 num = strtol(optarg, &p, 10); 283 if (*p || num < 2) 284 errx(1, "illegal -L value -- %s", optarg); 285 nfsargsp->leaseterm = num; 286 nfsargsp->flags |= NFSMNT_LEASETERM; 287 break; 288 case 'l': 289 nfsargsp->flags |= NFSMNT_RDIRPLUS; 290 break; 291 #ifdef NFSKERB 292 case 'm': 293 (void)strncpy(realm, optarg, REALM_SZ - 1); 294 realm[REALM_SZ - 1] = '\0'; 295 break; 296 #endif 297 case 'o': 298 #ifdef __FreeBSD__ 299 getmntopts(optarg, mopts, &mntflags, &altflags); 300 if(altflags & ALTF_BG) 301 opflags |= BGRND; 302 if(altflags & ALTF_NOCONN) 303 nfsargsp->flags |= NFSMNT_NOCONN; 304 if(altflags & ALTF_DUMBTIMR) 305 nfsargsp->flags |= NFSMNT_DUMBTIMR; 306 if(altflags & ALTF_INTR) 307 nfsargsp->flags |= NFSMNT_INT; 308 #ifdef NFSKERB 309 if(altflags & ALTF_KERB) 310 nfsargsp->flags |= NFSMNT_KERB; 311 #endif 312 if(altflags & ALTF_NFSV3) 313 nfsargsp->flags |= NFSMNT_NFSV3; 314 if(altflags & ALTF_RDIRPLUS) 315 nfsargsp->flags |= NFSMNT_RDIRPLUS; 316 if(altflags & ALTF_MNTUDP) 317 mnttcp_ok = 0; 318 if(altflags & ALTF_RESVPORT) 319 nfsargsp->flags |= NFSMNT_RESVPORT; 320 #ifdef ISO 321 if(altflags & ALTF_SEQPACKET) 322 nfsargsp->sotype = SOCK_SEQPACKET; 323 #endif 324 if(altflags & ALTF_NQNFS) 325 nfsargsp->flags |= (NFSMNT_NQNFS|NFSMNT_NFSV3); 326 if(altflags & ALTF_SOFT) 327 nfsargsp->flags |= NFSMNT_SOFT; 328 if(altflags & ALTF_TCP) { 329 nfsargsp->sotype = SOCK_STREAM; 330 nfsproto = IPPROTO_TCP; 331 } 332 if(altflags & ALTF_PORT) 333 port_no = atoi(strstr(optarg, "port=") + 5); 334 altflags = 0; 335 #else 336 getmntopts(optarg, mopts, &mntflags); 337 #endif 338 break; 339 case 'P': 340 nfsargsp->flags |= NFSMNT_RESVPORT; 341 break; 342 #ifdef ISO 343 case 'p': 344 nfsargsp->sotype = SOCK_SEQPACKET; 345 break; 346 #endif 347 case 'q': 348 nfsargsp->flags |= (NFSMNT_NQNFS | NFSMNT_NFSV3); 349 break; 350 case 'R': 351 num = strtol(optarg, &p, 10); 352 if (*p || num <= 0) 353 errx(1, "illegal -R value -- %s", optarg); 354 retrycnt = num; 355 break; 356 case 'r': 357 num = strtol(optarg, &p, 10); 358 if (*p || num <= 0) 359 errx(1, "illegal -r value -- %s", optarg); 360 nfsargsp->rsize = num; 361 nfsargsp->flags |= NFSMNT_RSIZE; 362 break; 363 case 's': 364 nfsargsp->flags |= NFSMNT_SOFT; 365 break; 366 case 'T': 367 nfsargsp->sotype = SOCK_STREAM; 368 nfsproto = IPPROTO_TCP; 369 break; 370 case 't': 371 num = strtol(optarg, &p, 10); 372 if (*p || num <= 0) 373 errx(1, "illegal -t value -- %s", optarg); 374 nfsargsp->timeo = num; 375 nfsargsp->flags |= NFSMNT_TIMEO; 376 break; 377 case 'w': 378 num = strtol(optarg, &p, 10); 379 if (*p || num <= 0) 380 errx(1, "illegal -w value -- %s", optarg); 381 nfsargsp->wsize = num; 382 nfsargsp->flags |= NFSMNT_WSIZE; 383 break; 384 case 'x': 385 num = strtol(optarg, &p, 10); 386 if (*p || num <= 0) 387 errx(1, "illegal -x value -- %s", optarg); 388 nfsargsp->retrans = num; 389 nfsargsp->flags |= NFSMNT_RETRANS; 390 break; 391 case 'U': 392 mnttcp_ok = 0; 393 break; 394 default: 395 usage(); 396 break; 397 } 398 argc -= optind; 399 argv += optind; 400 401 if (argc != 2) 402 usage(); 403 404 spec = *argv++; 405 name = *argv; 406 407 if (!getnfsargs(spec, nfsargsp)) 408 exit(1); 409 410 #ifdef __FreeBSD__ 411 vfc = getvfsbyname("nfs"); 412 if(!vfc && vfsisloadable("nfs")) { 413 if(vfsload("nfs")) 414 err(1, "vfsload(nfs)"); 415 endvfsent(); /* flush cache */ 416 vfc = getvfsbyname("nfs"); 417 } 418 419 if (mount(vfc ? vfc->vfc_index : MOUNT_NFS, name, mntflags, nfsargsp)) 420 #else 421 if (mount(MOUNT_NFS, name, mntflags, nfsargsp)) 422 #endif 423 err(1, "%s", name); 424 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 425 if ((opflags & ISBGRND) == 0) { 426 if (i = fork()) { 427 if (i == -1) 428 err(1, "nqnfs 1"); 429 exit(0); 430 } 431 (void) setsid(); 432 (void) close(STDIN_FILENO); 433 (void) close(STDOUT_FILENO); 434 (void) close(STDERR_FILENO); 435 (void) chdir("/"); 436 } 437 openlog("mount_nfs:", LOG_PID, LOG_DAEMON); 438 nfssvc_flag = NFSSVC_MNTD; 439 ncd.ncd_dirp = name; 440 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 441 if (errno != ENEEDAUTH) { 442 syslog(LOG_ERR, "nfssvc err %m"); 443 continue; 444 } 445 nfssvc_flag = 446 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 447 #ifdef NFSKERB 448 /* 449 * Set up as ncd_authuid for the kerberos call. 450 * Must set ruid to ncd_authuid and reset the 451 * ticket name iff ncd_authuid is not the same 452 * as last time, so that the right ticket file 453 * is found. 454 * Get the Kerberos credential structure so that 455 * we have the seesion key and get a ticket for 456 * this uid. 457 * For more info see the IETF Draft "Authentication 458 * in ONC RPC". 459 */ 460 if (ncd.ncd_authuid != last_ruid) { 461 char buf[512]; 462 (void)sprintf(buf, "%s%d", 463 TKT_ROOT, ncd.ncd_authuid); 464 krb_set_tkt_string(buf); 465 last_ruid = ncd.ncd_authuid; 466 } 467 setreuid(ncd.ncd_authuid, 0); 468 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 469 if (kret == RET_NOTKT) { 470 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 471 DEFAULT_TKT_LIFE); 472 if (kret == KSUCCESS) 473 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 474 &kcr); 475 } 476 if (kret == KSUCCESS) 477 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 478 realm, 0); 479 480 /* 481 * Fill in the AKN_FULLNAME authenticator and verfier. 482 * Along with the Kerberos ticket, we need to build 483 * the timestamp verifier and encrypt it in CBC mode. 484 */ 485 if (kret == KSUCCESS && 486 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 487 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 488 ncd.ncd_authtype = RPCAUTH_KERB4; 489 ncd.ncd_authstr = (u_char *)&ktick; 490 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 491 3 * NFSX_UNSIGNED; 492 ncd.ncd_verfstr = (u_char *)&kverf; 493 ncd.ncd_verflen = sizeof (kverf); 494 bcopy((caddr_t)kcr.session, (caddr_t)ncd.ncd_key, 495 sizeof (kcr.session)); 496 kin.t1 = htonl(ktv.tv_sec); 497 kin.t2 = htonl(ktv.tv_usec); 498 kin.w1 = htonl(NFS_KERBTTL); 499 kin.w2 = htonl(NFS_KERBTTL - 1); 500 bzero((caddr_t)kivec, sizeof (kivec)); 501 502 /* 503 * Encrypt kin in CBC mode using the session 504 * key in kcr. 505 */ 506 XXX 507 508 /* 509 * Finally, fill the timestamp verifier into the 510 * authenticator and verifier. 511 */ 512 ktick.kind = htonl(RPCAKN_FULLNAME); 513 kverf.kind = htonl(RPCAKN_FULLNAME); 514 NFS_KERBW1(ktick.kt) = kout.w1; 515 ktick.kt.length = htonl(ktick.kt.length); 516 kverf.verf.t1 = kout.t1; 517 kverf.verf.t2 = kout.t2; 518 kverf.verf.w2 = kout.w2; 519 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 520 } 521 setreuid(0, 0); 522 #endif /* NFSKERB */ 523 } 524 } 525 exit(0); 526 } 527 528 int 529 getnfsargs(spec, nfsargsp) 530 char *spec; 531 struct nfs_args *nfsargsp; 532 { 533 register CLIENT *clp; 534 struct hostent *hp; 535 static struct sockaddr_in saddr; 536 #ifdef ISO 537 static struct sockaddr_iso isoaddr; 538 struct iso_addr *isop; 539 int isoflag = 0; 540 #endif 541 struct timeval pertry, try; 542 enum clnt_stat clnt_stat; 543 int so = RPC_ANYSOCK, i, nfsvers, mntvers; 544 char *hostp, *delimp; 545 #ifdef NFSKERB 546 char *cp; 547 #endif 548 u_short tport; 549 static struct nfhret nfhret; 550 static char nam[MNAMELEN + 1]; 551 552 strncpy(nam, spec, MNAMELEN); 553 nam[MNAMELEN] = '\0'; 554 if ((delimp = strchr(spec, '@')) != NULL) { 555 hostp = delimp + 1; 556 } else if ((delimp = strchr(spec, ':')) != NULL) { 557 hostp = spec; 558 spec = delimp + 1; 559 } else { 560 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 561 return (0); 562 } 563 *delimp = '\0'; 564 /* 565 * DUMB!! Until the mount protocol works on iso transport, we must 566 * supply both an iso and an inet address for the host. 567 */ 568 #ifdef ISO 569 if (!strncmp(hostp, "iso=", 4)) { 570 u_short isoport; 571 572 hostp += 4; 573 isoflag++; 574 if ((delimp = strchr(hostp, '+')) == NULL) { 575 warnx("no iso+inet address"); 576 return (0); 577 } 578 *delimp = '\0'; 579 if ((isop = iso_addr(hostp)) == NULL) { 580 warnx("bad ISO address"); 581 return (0); 582 } 583 bzero((caddr_t)&isoaddr, sizeof (isoaddr)); 584 bcopy((caddr_t)isop, (caddr_t)&isoaddr.siso_addr, 585 sizeof (struct iso_addr)); 586 isoaddr.siso_len = sizeof (isoaddr); 587 isoaddr.siso_family = AF_ISO; 588 isoaddr.siso_tlen = 2; 589 isoport = htons(NFS_PORT); 590 bcopy((caddr_t)&isoport, TSEL(&isoaddr), isoaddr.siso_tlen); 591 hostp = delimp + 1; 592 } 593 #endif /* ISO */ 594 595 /* 596 * Handle an internet host address and reverse resolve it if 597 * doing Kerberos. 598 */ 599 if (isdigit(*hostp)) { 600 if ((saddr.sin_addr.s_addr = inet_addr(hostp)) == -1) { 601 warnx("bad net address %s", hostp); 602 return (0); 603 } 604 } else if ((hp = gethostbyname(hostp)) != NULL) { 605 bcopy(hp->h_addr, (caddr_t)&saddr.sin_addr, hp->h_length); 606 } else { 607 warnx("can't get net id for host"); 608 return (0); 609 } 610 #ifdef NFSKERB 611 if ((nfsargsp->flags & NFSMNT_KERB)) { 612 if ((hp = gethostbyaddr((char *)&saddr.sin_addr.s_addr, 613 sizeof (u_long), AF_INET)) == (struct hostent *)0) { 614 warnx("can't reverse resolve net address"); 615 return (0); 616 } 617 bcopy(hp->h_addr, (caddr_t)&saddr.sin_addr, hp->h_length); 618 strncpy(inst, hp->h_name, INST_SZ); 619 inst[INST_SZ - 1] = '\0'; 620 if (cp = strchr(inst, '.')) 621 *cp = '\0'; 622 } 623 #endif /* NFSKERB */ 624 625 if (nfsargsp->flags & NFSMNT_NFSV3) { 626 nfsvers = 3; 627 mntvers = 3; 628 } else { 629 nfsvers = 2; 630 mntvers = 1; 631 } 632 nfhret.stat = EACCES; /* Mark not yet successful */ 633 while (retrycnt > 0) { 634 saddr.sin_family = AF_INET; 635 saddr.sin_port = htons(PMAPPORT); 636 if ((tport = port_no ? port_no : 637 pmap_getport(&saddr, RPCPROG_NFS, 638 nfsvers, nfsproto)) == 0) { 639 if ((opflags & ISBGRND) == 0) 640 clnt_pcreateerror("NFS Portmap"); 641 } else { 642 saddr.sin_port = 0; 643 pertry.tv_sec = 10; 644 pertry.tv_usec = 0; 645 if (mnttcp_ok && nfsargsp->sotype == SOCK_STREAM) 646 clp = clnttcp_create(&saddr, RPCPROG_MNT, mntvers, 647 &so, 0, 0); 648 else 649 clp = clntudp_create(&saddr, RPCPROG_MNT, mntvers, 650 pertry, &so); 651 if (clp == NULL) { 652 if ((opflags & ISBGRND) == 0) 653 clnt_pcreateerror("Cannot MNT RPC"); 654 } else { 655 clp->cl_auth = authunix_create_default(); 656 try.tv_sec = 10; 657 try.tv_usec = 0; 658 if (nfsargsp->flags & NFSMNT_KERB) 659 nfhret.auth = RPCAUTH_KERB4; 660 else 661 nfhret.auth = RPCAUTH_UNIX; 662 nfhret.vers = mntvers; 663 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 664 xdr_dir, spec, xdr_fh, &nfhret, try); 665 if (clnt_stat != RPC_SUCCESS) { 666 if ((opflags & ISBGRND) == 0) 667 warnx("%s", clnt_sperror(clp, 668 "bad MNT RPC")); 669 } else { 670 auth_destroy(clp->cl_auth); 671 clnt_destroy(clp); 672 retrycnt = 0; 673 } 674 } 675 } 676 if (--retrycnt > 0) { 677 if (opflags & BGRND) { 678 opflags &= ~BGRND; 679 if (i = fork()) { 680 if (i == -1) 681 err(1, "nqnfs 2"); 682 exit(0); 683 } 684 (void) setsid(); 685 (void) close(STDIN_FILENO); 686 (void) close(STDOUT_FILENO); 687 (void) close(STDERR_FILENO); 688 (void) chdir("/"); 689 opflags |= ISBGRND; 690 } 691 sleep(60); 692 } 693 } 694 if (nfhret.stat) { 695 if (opflags & ISBGRND) 696 exit(1); 697 errno = nfhret.stat; 698 warn("can't access %s", spec); 699 return (0); 700 } 701 saddr.sin_port = htons(tport); 702 #ifdef ISO 703 if (isoflag) { 704 nfsargsp->addr = (struct sockaddr *) &isoaddr; 705 nfsargsp->addrlen = sizeof (isoaddr); 706 } else 707 #endif /* ISO */ 708 { 709 nfsargsp->addr = (struct sockaddr *) &saddr; 710 nfsargsp->addrlen = sizeof (saddr); 711 } 712 nfsargsp->fh = nfhret.nfh; 713 nfsargsp->fhsize = nfhret.fhsize; 714 nfsargsp->hostname = nam; 715 return (1); 716 } 717 718 /* 719 * xdr routines for mount rpc's 720 */ 721 int 722 xdr_dir(xdrsp, dirp) 723 XDR *xdrsp; 724 char *dirp; 725 { 726 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 727 } 728 729 int 730 xdr_fh(xdrsp, np) 731 XDR *xdrsp; 732 register struct nfhret *np; 733 { 734 register int i; 735 long auth, authcnt, authfnd = 0; 736 737 if (!xdr_u_long(xdrsp, &np->stat)) 738 return (0); 739 if (np->stat) 740 return (1); 741 switch (np->vers) { 742 case 1: 743 np->fhsize = NFSX_V2FH; 744 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 745 case 3: 746 if (!xdr_long(xdrsp, &np->fhsize)) 747 return (0); 748 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 749 return (0); 750 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 751 return (0); 752 if (!xdr_long(xdrsp, &authcnt)) 753 return (0); 754 for (i = 0; i < authcnt; i++) { 755 if (!xdr_long(xdrsp, &auth)) 756 return (0); 757 if (auth == np->auth) 758 authfnd++; 759 } 760 761 /* 762 * Some servers, such as DEC's OSF/1 return a nil authenticator 763 * list to indicate RPCAUTH_UNIX. 764 */ 765 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 766 np->stat = EAUTH; 767 return (1); 768 }; 769 return (0); 770 } 771 772 __dead void 773 usage() 774 { 775 (void)fprintf(stderr, "\ 776 usage: mount_nfs [-3KPTUbcdilqs] [-D deadthresh] [-I readdirsize]\n\ 777 [-L leaseterm] [-R retrycnt] [-a maxreadahead] [-g maxgroups]\n\ 778 [-m realm] [-o options] [-r readsize] [-t timeout] [-w writesize]\n\ 779 [-x retrans] rhost:path node\n"); 780 exit(1); 781 } 782