mount_nfs.c revision 1.1.1.2
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 8.11 (Berkeley) 5/4/95"; 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 #define ALTF_BG 0x1 90 #define ALTF_NOCONN 0x2 91 #define ALTF_DUMBTIMR 0x4 92 #define ALTF_INTR 0x8 93 #define ALTF_KERB 0x10 94 #define ALTF_NFSV3 0x20 95 #define ALTF_RDIRPLUS 0x40 96 #define ALTF_MNTUDP 0x80 97 #define ALTF_RESVPORT 0x100 98 #define ALTF_SEQPACKET 0x200 99 #define ALTF_NQNFS 0x400 100 #define ALTF_SOFT 0x800 101 #define ALTF_TCP 0x1000 102 103 struct mntopt mopts[] = { 104 MOPT_STDOPTS, 105 MOPT_FORCE, 106 MOPT_UPDATE, 107 { "bg", 0, ALTF_BG, 1 }, 108 { "conn", 1, ALTF_NOCONN, 1 }, 109 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 110 { "intr", 0, ALTF_INTR, 1 }, 111 #ifdef NFSKERB 112 { "kerb", 0, ALTF_KERB, 1 }, 113 #endif 114 { "nfsv3", 0, ALTF_NFSV3, 1 }, 115 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 116 { "mntudp", 0, ALTF_MNTUDP, 1 }, 117 { "resvport", 0, ALTF_RESVPORT, 1 }, 118 #ifdef ISO 119 { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 120 #endif 121 { "nqnfs", 0, ALTF_NQNFS, 1 }, 122 { "soft", 0, ALTF_SOFT, 1 }, 123 { "tcp", 0, ALTF_TCP, 1 }, 124 { NULL } 125 }; 126 127 struct nfs_args nfsdefargs = { 128 NFS_ARGSVERSION, 129 (struct sockaddr *)0, 130 sizeof (struct sockaddr_in), 131 SOCK_DGRAM, 132 0, 133 (u_char *)0, 134 0, 135 0, 136 NFS_WSIZE, 137 NFS_RSIZE, 138 NFS_READDIRSIZE, 139 10, 140 NFS_RETRANS, 141 NFS_MAXGRPS, 142 NFS_DEFRAHEAD, 143 NQ_DEFLEASE, 144 NQ_DEADTHRESH, 145 (char *)0, 146 }; 147 148 struct nfhret { 149 u_long stat; 150 long vers; 151 long auth; 152 long fhsize; 153 u_char nfh[NFSX_V3FHMAX]; 154 }; 155 #define DEF_RETRY 10000 156 #define BGRND 1 157 #define ISBGRND 2 158 int retrycnt = DEF_RETRY; 159 int opflags = 0; 160 int nfsproto = IPPROTO_UDP; 161 int mnttcp_ok = 1; 162 163 #ifdef NFSKERB 164 char inst[INST_SZ]; 165 char realm[REALM_SZ]; 166 struct { 167 u_long kind; 168 KTEXT_ST kt; 169 } ktick; 170 struct nfsrpc_nickverf kverf; 171 struct nfsrpc_fullblock kin, kout; 172 NFSKERBKEY_T kivec; 173 CREDENTIALS kcr; 174 struct timeval ktv; 175 NFSKERBKEYSCHED_T kerb_keysched; 176 #endif 177 178 int getnfsargs __P((char *, struct nfs_args *)); 179 #ifdef ISO 180 struct iso_addr *iso_addr __P((const char *)); 181 #endif 182 void set_rpc_maxgrouplist __P((int)); 183 __dead void usage __P((void)); 184 int xdr_dir __P((XDR *, char *)); 185 int xdr_fh __P((XDR *, struct nfhret *)); 186 187 int 188 main(argc, argv) 189 int argc; 190 char *argv[]; 191 { 192 register int c; 193 register struct nfs_args *nfsargsp; 194 struct nfs_args nfsargs; 195 struct nfsd_cargs ncd; 196 int mntflags, altflags, i, nfssvc_flag, num; 197 char *name, *p, *spec; 198 int error = 0; 199 #ifdef NFSKERB 200 uid_t last_ruid; 201 202 last_ruid = -1; 203 (void)strcpy(realm, KRB_REALM); 204 if (sizeof (struct nfsrpc_nickverf) != RPCX_NICKVERF || 205 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK || 206 ((char *)&ktick.kt) - ((char *)&ktick) != NFSX_UNSIGNED || 207 ((char *)ktick.kt.dat) - ((char *)&ktick) != 2 * NFSX_UNSIGNED) 208 fprintf(stderr, "Yikes! NFSKERB structs not packed!!\n"); 209 #endif /* NFSKERB */ 210 retrycnt = DEF_RETRY; 211 212 mntflags = 0; 213 altflags = 0; 214 nfsargs = nfsdefargs; 215 nfsargsp = &nfsargs; 216 while ((c = getopt(argc, argv, 217 "3a:bcdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:U")) != EOF) 218 switch (c) { 219 case '3': 220 nfsargsp->flags |= NFSMNT_NFSV3; 221 break; 222 case 'a': 223 num = strtol(optarg, &p, 10); 224 if (*p || num < 0) 225 errx(1, "illegal -a value -- %s", optarg); 226 nfsargsp->readahead = num; 227 nfsargsp->flags |= NFSMNT_READAHEAD; 228 break; 229 case 'b': 230 opflags |= BGRND; 231 break; 232 case 'c': 233 nfsargsp->flags |= NFSMNT_NOCONN; 234 break; 235 case 'D': 236 num = strtol(optarg, &p, 10); 237 if (*p || num <= 0) 238 errx(1, "illegal -D value -- %s", optarg); 239 nfsargsp->deadthresh = num; 240 nfsargsp->flags |= NFSMNT_DEADTHRESH; 241 break; 242 case 'd': 243 nfsargsp->flags |= NFSMNT_DUMBTIMR; 244 break; 245 case 'g': 246 num = strtol(optarg, &p, 10); 247 if (*p || num <= 0) 248 errx(1, "illegal -g value -- %s", optarg); 249 set_rpc_maxgrouplist(num); 250 nfsargsp->maxgrouplist = num; 251 nfsargsp->flags |= NFSMNT_MAXGRPS; 252 break; 253 case 'I': 254 num = strtol(optarg, &p, 10); 255 if (*p || num <= 0) 256 errx(1, "illegal -I value -- %s", optarg); 257 nfsargsp->readdirsize = num; 258 nfsargsp->flags |= NFSMNT_READDIRSIZE; 259 break; 260 case 'i': 261 nfsargsp->flags |= NFSMNT_INT; 262 break; 263 #ifdef NFSKERB 264 case 'K': 265 nfsargsp->flags |= NFSMNT_KERB; 266 break; 267 #endif 268 case 'L': 269 num = strtol(optarg, &p, 10); 270 if (*p || num < 2) 271 errx(1, "illegal -L value -- %s", optarg); 272 nfsargsp->leaseterm = num; 273 nfsargsp->flags |= NFSMNT_LEASETERM; 274 break; 275 case 'l': 276 nfsargsp->flags |= NFSMNT_RDIRPLUS; 277 break; 278 #ifdef NFSKERB 279 case 'm': 280 (void)strncpy(realm, optarg, REALM_SZ - 1); 281 realm[REALM_SZ - 1] = '\0'; 282 break; 283 #endif 284 case 'o': 285 getmntopts(optarg, mopts, &mntflags, &altflags); 286 if(altflags & ALTF_BG) 287 opflags |= BGRND; 288 if(altflags & ALTF_NOCONN) 289 nfsargsp->flags |= NFSMNT_NOCONN; 290 if(altflags & ALTF_DUMBTIMR) 291 nfsargsp->flags |= NFSMNT_DUMBTIMR; 292 if(altflags & ALTF_INTR) 293 nfsargsp->flags |= NFSMNT_INT; 294 #ifdef NFSKERB 295 if(altflags & ALTF_KERB) 296 nfsargsp->flags |= NFSMNT_KERB; 297 #endif 298 if(altflags & ALTF_NFSV3) 299 nfsargsp->flags |= NFSMNT_NFSV3; 300 if(altflags & ALTF_RDIRPLUS) 301 nfsargsp->flags |= NFSMNT_RDIRPLUS; 302 if(altflags & ALTF_MNTUDP) 303 mnttcp_ok = 0; 304 if(altflags & ALTF_RESVPORT) 305 nfsargsp->flags |= NFSMNT_RESVPORT; 306 #ifdef ISO 307 if(altflags & ALTF_SEQPACKET) 308 nfsargsp->sotype = SOCK_SEQPACKET; 309 #endif 310 if(altflags & ALTF_NQNFS) 311 nfsargsp->flags |= (NFSMNT_NQNFS|NFSMNT_NFSV3); 312 if(altflags & ALTF_SOFT) 313 nfsargsp->flags |= NFSMNT_SOFT; 314 if(altflags & ALTF_TCP) { 315 nfsargsp->sotype = SOCK_STREAM; 316 nfsproto = IPPROTO_TCP; 317 } 318 altflags = 0; 319 break; 320 case 'P': 321 nfsargsp->flags |= NFSMNT_RESVPORT; 322 break; 323 #ifdef ISO 324 case 'p': 325 nfsargsp->sotype = SOCK_SEQPACKET; 326 break; 327 #endif 328 case 'q': 329 nfsargsp->flags |= (NFSMNT_NQNFS | NFSMNT_NFSV3); 330 break; 331 case 'R': 332 num = strtol(optarg, &p, 10); 333 if (*p || num <= 0) 334 errx(1, "illegal -R value -- %s", optarg); 335 retrycnt = num; 336 break; 337 case 'r': 338 num = strtol(optarg, &p, 10); 339 if (*p || num <= 0) 340 errx(1, "illegal -r value -- %s", optarg); 341 nfsargsp->rsize = num; 342 nfsargsp->flags |= NFSMNT_RSIZE; 343 break; 344 case 's': 345 nfsargsp->flags |= NFSMNT_SOFT; 346 break; 347 case 'T': 348 nfsargsp->sotype = SOCK_STREAM; 349 nfsproto = IPPROTO_TCP; 350 break; 351 case 't': 352 num = strtol(optarg, &p, 10); 353 if (*p || num <= 0) 354 errx(1, "illegal -t value -- %s", optarg); 355 nfsargsp->timeo = num; 356 nfsargsp->flags |= NFSMNT_TIMEO; 357 break; 358 case 'w': 359 num = strtol(optarg, &p, 10); 360 if (*p || num <= 0) 361 errx(1, "illegal -w value -- %s", optarg); 362 nfsargsp->wsize = num; 363 nfsargsp->flags |= NFSMNT_WSIZE; 364 break; 365 case 'x': 366 num = strtol(optarg, &p, 10); 367 if (*p || num <= 0) 368 errx(1, "illegal -x value -- %s", optarg); 369 nfsargsp->retrans = num; 370 nfsargsp->flags |= NFSMNT_RETRANS; 371 break; 372 case 'U': 373 mnttcp_ok = 0; 374 break; 375 default: 376 usage(); 377 break; 378 } 379 argc -= optind; 380 argv += optind; 381 382 if (argc != 2) { 383 usage(); 384 /* NOTREACHED */ 385 } 386 387 spec = *argv++; 388 name = *argv; 389 390 if (!getnfsargs(spec, nfsargsp)) 391 exit(1); 392 393 if (mount("nfs", name, mntflags, nfsargsp)) 394 err(1, "%s", name); 395 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 396 if ((opflags & ISBGRND) == 0) { 397 if (i = fork()) { 398 if (i == -1) 399 err(1, "nqnfs 1"); 400 exit(0); 401 } 402 (void) setsid(); 403 (void) close(STDIN_FILENO); 404 (void) close(STDOUT_FILENO); 405 (void) close(STDERR_FILENO); 406 (void) chdir("/"); 407 } 408 openlog("mount_nfs:", LOG_PID, LOG_DAEMON); 409 nfssvc_flag = NFSSVC_MNTD; 410 ncd.ncd_dirp = name; 411 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 412 if (errno != ENEEDAUTH) { 413 syslog(LOG_ERR, "nfssvc err %m"); 414 continue; 415 } 416 nfssvc_flag = 417 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 418 #ifdef NFSKERB 419 /* 420 * Set up as ncd_authuid for the kerberos call. 421 * Must set ruid to ncd_authuid and reset the 422 * ticket name iff ncd_authuid is not the same 423 * as last time, so that the right ticket file 424 * is found. 425 * Get the Kerberos credential structure so that 426 * we have the seesion key and get a ticket for 427 * this uid. 428 * For more info see the IETF Draft "Authentication 429 * in ONC RPC". 430 */ 431 if (ncd.ncd_authuid != last_ruid) { 432 krb_set_tkt_string(""); 433 last_ruid = ncd.ncd_authuid; 434 } 435 setreuid(ncd.ncd_authuid, 0); 436 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 437 if (kret == RET_NOTKT) { 438 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 439 DEFAULT_TKT_LIFE); 440 if (kret == KSUCCESS) 441 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 442 &kcr); 443 } 444 if (kret == KSUCCESS) 445 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 446 realm, 0); 447 448 /* 449 * Fill in the AKN_FULLNAME authenticator and verfier. 450 * Along with the Kerberos ticket, we need to build 451 * the timestamp verifier and encrypt it in CBC mode. 452 */ 453 if (kret == KSUCCESS && 454 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 455 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 456 ncd.ncd_authtype = RPCAUTH_KERB4; 457 ncd.ncd_authstr = (u_char *)&ktick; 458 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 459 3 * NFSX_UNSIGNED; 460 ncd.ncd_verfstr = (u_char *)&kverf; 461 ncd.ncd_verflen = sizeof (kverf); 462 memmove(ncd.ncd_key, kcr.session, 463 sizeof (kcr.session)); 464 kin.t1 = htonl(ktv.tv_sec); 465 kin.t2 = htonl(ktv.tv_usec); 466 kin.w1 = htonl(NFS_KERBTTL); 467 kin.w2 = htonl(NFS_KERBTTL - 1); 468 bzero((caddr_t)kivec, sizeof (kivec)); 469 470 /* 471 * Encrypt kin in CBC mode using the session 472 * key in kcr. 473 */ 474 XXX 475 476 /* 477 * Finally, fill the timestamp verifier into the 478 * authenticator and verifier. 479 */ 480 ktick.kind = htonl(RPCAKN_FULLNAME); 481 kverf.kind = htonl(RPCAKN_FULLNAME); 482 NFS_KERBW1(ktick.kt) = kout.w1; 483 ktick.kt.length = htonl(ktick.kt.length); 484 kverf.verf.t1 = kout.t1; 485 kverf.verf.t2 = kout.t2; 486 kverf.verf.w2 = kout.w2; 487 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 488 } 489 setreuid(0, 0); 490 #endif /* NFSKERB */ 491 } 492 } 493 exit(0); 494 } 495 496 int 497 getnfsargs(spec, nfsargsp) 498 char *spec; 499 struct nfs_args *nfsargsp; 500 { 501 register CLIENT *clp; 502 struct hostent *hp; 503 static struct sockaddr_in saddr; 504 #ifdef ISO 505 static struct sockaddr_iso isoaddr; 506 struct iso_addr *isop; 507 int isoflag = 0; 508 #endif 509 struct timeval pertry, try; 510 enum clnt_stat clnt_stat; 511 int so = RPC_ANYSOCK, i, nfsvers, mntvers; 512 char *hostp, *delimp; 513 #ifdef NFSKERB 514 char *cp; 515 #endif 516 u_short tport; 517 static struct nfhret nfhret; 518 static char nam[MNAMELEN + 1]; 519 520 strncpy(nam, spec, MNAMELEN); 521 nam[MNAMELEN] = '\0'; 522 if ((delimp = strchr(spec, '@')) != NULL) { 523 hostp = delimp + 1; 524 } else if ((delimp = strchr(spec, ':')) != NULL) { 525 hostp = spec; 526 spec = delimp + 1; 527 } else { 528 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 529 return (0); 530 } 531 *delimp = '\0'; 532 /* 533 * DUMB!! Until the mount protocol works on iso transport, we must 534 * supply both an iso and an inet address for the host. 535 */ 536 #ifdef ISO 537 if (!strncmp(hostp, "iso=", 4)) { 538 u_short isoport; 539 540 hostp += 4; 541 isoflag++; 542 if ((delimp = strchr(hostp, '+')) == NULL) { 543 warnx("no iso+inet address"); 544 return (0); 545 } 546 *delimp = '\0'; 547 if ((isop = iso_addr(hostp)) == NULL) { 548 warnx("bad ISO address"); 549 return (0); 550 } 551 memset(&isoaddr, 0, sizeof (isoaddr)); 552 memmove(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 553 isoaddr.siso_len = sizeof (isoaddr); 554 isoaddr.siso_family = AF_ISO; 555 isoaddr.siso_tlen = 2; 556 isoport = htons(NFS_PORT); 557 memmove(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 558 hostp = delimp + 1; 559 } 560 #endif /* ISO */ 561 562 /* 563 * Handle an internet host address and reverse resolve it if 564 * doing Kerberos. 565 */ 566 if (isdigit(*hostp)) { 567 if ((saddr.sin_addr.s_addr = inet_addr(hostp)) == -1) { 568 warnx("bad net address %s", hostp); 569 return (0); 570 } 571 } else if ((hp = gethostbyname(hostp)) != NULL) 572 memmove(&saddr.sin_addr, hp->h_addr, hp->h_length); 573 else { 574 warnx("can't get net id for host"); 575 return (0); 576 } 577 #ifdef NFSKERB 578 if ((nfsargsp->flags & NFSMNT_KERB)) { 579 if ((hp = gethostbyaddr((char *)&saddr.sin_addr.s_addr, 580 sizeof (u_long), AF_INET)) == (struct hostent *)0) { 581 warnx("can't reverse resolve net address"); 582 return (0); 583 } 584 memmove(&saddr.sin_addr, hp->h_addr, hp->h_length); 585 strncpy(inst, hp->h_name, INST_SZ); 586 inst[INST_SZ - 1] = '\0'; 587 if (cp = strchr(inst, '.')) 588 *cp = '\0'; 589 } 590 #endif /* NFSKERB */ 591 592 if (nfsargsp->flags & NFSMNT_NFSV3) { 593 nfsvers = 3; 594 mntvers = 3; 595 } else { 596 nfsvers = 2; 597 mntvers = 1; 598 } 599 nfhret.stat = EACCES; /* Mark not yet successful */ 600 while (retrycnt > 0) { 601 saddr.sin_family = AF_INET; 602 saddr.sin_port = htons(PMAPPORT); 603 if ((tport = pmap_getport(&saddr, RPCPROG_NFS, 604 nfsvers, nfsproto)) == 0) { 605 if ((opflags & ISBGRND) == 0) 606 clnt_pcreateerror("NFS Portmap"); 607 } else { 608 saddr.sin_port = 0; 609 pertry.tv_sec = 10; 610 pertry.tv_usec = 0; 611 if (mnttcp_ok && nfsargsp->sotype == SOCK_STREAM) 612 clp = clnttcp_create(&saddr, RPCPROG_MNT, mntvers, 613 &so, 0, 0); 614 else 615 clp = clntudp_create(&saddr, RPCPROG_MNT, mntvers, 616 pertry, &so); 617 if (clp == NULL) { 618 if ((opflags & ISBGRND) == 0) 619 clnt_pcreateerror("Cannot MNT PRC"); 620 } else { 621 clp->cl_auth = authunix_create_default(); 622 try.tv_sec = 10; 623 try.tv_usec = 0; 624 if (nfsargsp->flags & NFSMNT_KERB) 625 nfhret.auth = RPCAUTH_KERB4; 626 else 627 nfhret.auth = RPCAUTH_UNIX; 628 nfhret.vers = mntvers; 629 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 630 xdr_dir, spec, xdr_fh, &nfhret, try); 631 if (clnt_stat != RPC_SUCCESS) { 632 if ((opflags & ISBGRND) == 0) 633 warnx("%s", clnt_sperror(clp, 634 "bad MNT RPC")); 635 } else { 636 auth_destroy(clp->cl_auth); 637 clnt_destroy(clp); 638 retrycnt = 0; 639 } 640 } 641 } 642 if (--retrycnt > 0) { 643 if (opflags & BGRND) { 644 opflags &= ~BGRND; 645 if (i = fork()) { 646 if (i == -1) 647 err(1, "nqnfs 2"); 648 exit(0); 649 } 650 (void) setsid(); 651 (void) close(STDIN_FILENO); 652 (void) close(STDOUT_FILENO); 653 (void) close(STDERR_FILENO); 654 (void) chdir("/"); 655 opflags |= ISBGRND; 656 } 657 sleep(60); 658 } 659 } 660 if (nfhret.stat) { 661 if (opflags & ISBGRND) 662 exit(1); 663 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 664 return (0); 665 } 666 saddr.sin_port = htons(tport); 667 #ifdef ISO 668 if (isoflag) { 669 nfsargsp->addr = (struct sockaddr *) &isoaddr; 670 nfsargsp->addrlen = sizeof (isoaddr); 671 } else 672 #endif /* ISO */ 673 { 674 nfsargsp->addr = (struct sockaddr *) &saddr; 675 nfsargsp->addrlen = sizeof (saddr); 676 } 677 nfsargsp->fh = nfhret.nfh; 678 nfsargsp->fhsize = nfhret.fhsize; 679 nfsargsp->hostname = nam; 680 return (1); 681 } 682 683 /* 684 * xdr routines for mount rpc's 685 */ 686 int 687 xdr_dir(xdrsp, dirp) 688 XDR *xdrsp; 689 char *dirp; 690 { 691 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 692 } 693 694 int 695 xdr_fh(xdrsp, np) 696 XDR *xdrsp; 697 register struct nfhret *np; 698 { 699 register int i; 700 long auth, authcnt, authfnd = 0; 701 702 if (!xdr_u_long(xdrsp, &np->stat)) 703 return (0); 704 if (np->stat) 705 return (1); 706 switch (np->vers) { 707 case 1: 708 np->fhsize = NFSX_V2FH; 709 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 710 case 3: 711 if (!xdr_long(xdrsp, &np->fhsize)) 712 return (0); 713 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 714 return (0); 715 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 716 return (0); 717 if (!xdr_long(xdrsp, &authcnt)) 718 return (0); 719 for (i = 0; i < authcnt; i++) { 720 if (!xdr_long(xdrsp, &auth)) 721 return (0); 722 if (auth == np->auth) 723 authfnd++; 724 } 725 /* 726 * Some servers, such as DEC's OSF/1 return a nil authenticator 727 * list to indicate RPCAUTH_UNIX. 728 */ 729 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 730 np->stat = EAUTH; 731 return (1); 732 }; 733 return (0); 734 } 735 736 __dead void 737 usage() 738 { 739 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n", 740 "[-bcdiKklMPqsT] [-a maxreadahead] [-D deadthresh]", 741 "\t[-g maxgroups] [-L leaseterm] [-m realm] [-o options] [-R retrycnt]", 742 "\t[-r readsize] [-t timeout] [-w writesize] [-x retrans]", 743 "\trhost:path node"); 744 exit(1); 745 } 746
Indexes created Wed Oct 15 16:09:53 GMT 2025