mount_nfs.c revision 24359
18648Sjfranck/* 28648Sjfranck * Copyright (c) 1992, 1993, 1994 38648Sjfranck * The Regents of the University of California. All rights reserved. 48648Sjfranck * 58648Sjfranck * This code is derived from software contributed to Berkeley by 68648Sjfranck * Rick Macklem at The University of Guelph. 78648Sjfranck * 88648Sjfranck * Redistribution and use in source and binary forms, with or without 98648Sjfranck * modification, are permitted provided that the following conditions 108648Sjfranck * are met: 118648Sjfranck * 1. Redistributions of source code must retain the above copyright 128648Sjfranck * notice, this list of conditions and the following disclaimer. 138648Sjfranck * 2. Redistributions in binary form must reproduce the above copyright 148648Sjfranck * notice, this list of conditions and the following disclaimer in the 158648Sjfranck * documentation and/or other materials provided with the distribution. 168648Sjfranck * 3. All advertising materials mentioning features or use of this software 178648Sjfranck * must display the following acknowledgement: 188648Sjfranck * This product includes software developed by the University of 198648Sjfranck * California, Berkeley and its contributors. 208648Sjfranck * 4. Neither the name of the University nor the names of its contributors 218648Sjfranck * may be used to endorse or promote products derived from this software 228648Sjfranck * without specific prior written permission. 238648Sjfranck * 248648Sjfranck * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 258648Sjfranck * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2610462Sjfranck * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 278648Sjfranck * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 288648Sjfranck * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 298648Sjfranck * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 308648Sjfranck * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 318648Sjfranck * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 328648Sjfranck * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 338648Sjfranck * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 348648Sjfranck * SUCH DAMAGE. 358648Sjfranck */ 368648Sjfranck 378648Sjfranck#ifndef lint 388648Sjfranckstatic char copyright[] = 398648Sjfranck"@(#) Copyright (c) 1992, 1993, 1994\n\ 408648Sjfranck The Regents of the University of California. All rights reserved.\n"; 4110462Sjfranck#endif /* not lint */ 4210462Sjfranck 438648Sjfranck#ifndef lint 448648Sjfranck/* 458648Sjfranckstatic char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95"; 468648Sjfranck*/ 4710462Sjfranckstatic const char rcsid[] = 4810462Sjfranck "$Id: mount_nfs.c,v 1.17 1997/03/11 12:31:56 peter Exp $"; 4910462Sjfranck#endif /* not lint */ 5010462Sjfranck 518648Sjfranck#include <sys/param.h> 528648Sjfranck#include <sys/mount.h> 538648Sjfranck#include <sys/socket.h> 548648Sjfranck#include <sys/socketvar.h> 558648Sjfranck#include <sys/stat.h> 568648Sjfranck#include <sys/syslog.h> 578648Sjfranck 588648Sjfranck#include <rpc/rpc.h> 5910462Sjfranck#include <rpc/pmap_clnt.h> 608648Sjfranck#include <rpc/pmap_prot.h> 618648Sjfranck 628648Sjfranck#ifdef ISO 6310462Sjfranck#include <netiso/iso.h> 6410462Sjfranck#endif 658648Sjfranck 668648Sjfranck#ifdef NFSKERB 6710462Sjfranck#include <kerberosIV/des.h> 688648Sjfranck#include <kerberosIV/krb.h> 698648Sjfranck#endif 708648Sjfranck 718648Sjfranck#include <nfs/rpcv2.h> 728648Sjfranck#include <nfs/nfsproto.h> 738648Sjfranck#define KERNEL 748648Sjfranck#include <nfs/nfs.h> 758648Sjfranck#undef KERNEL 768648Sjfranck#include <nfs/nqnfs.h> 778648Sjfranck 788648Sjfranck#include <arpa/inet.h> 798648Sjfranck 808648Sjfranck#include <ctype.h> 818648Sjfranck#include <err.h> 8210462Sjfranck#include <errno.h> 838648Sjfranck#include <fcntl.h> 8410462Sjfranck#include <netdb.h> 858648Sjfranck#include <signal.h> 868648Sjfranck#include <stdio.h> 878648Sjfranck#include <stdlib.h> 8810462Sjfranck#include <strings.h> 8910462Sjfranck#include <sysexits.h> 9010462Sjfranck#include <unistd.h> 9110462Sjfranck 9210462Sjfranck#include "mntopts.h" 9310462Sjfranck 9410462Sjfranck#define ALTF_BG 0x1 9510462Sjfranck#define ALTF_NOCONN 0x2 9610462Sjfranck#define ALTF_DUMBTIMR 0x4 9710462Sjfranck#define ALTF_INTR 0x8 9810462Sjfranck#define ALTF_KERB 0x10 9910462Sjfranck#define ALTF_NFSV3 0x20 10010462Sjfranck#define ALTF_RDIRPLUS 0x40 10110462Sjfranck#define ALTF_MNTUDP 0x80 1028648Sjfranck#define ALTF_RESVPORT 0x100 1038648Sjfranck#define ALTF_SEQPACKET 0x200 1048648Sjfranck#define ALTF_NQNFS 0x400 1058648Sjfranck#define ALTF_SOFT 0x800 1068648Sjfranck#define ALTF_TCP 0x1000 1078648Sjfranck#define ALTF_PORT 0x2000 1088648Sjfranck 1098648Sjfranckstruct mntopt mopts[] = { 1108648Sjfranck MOPT_STDOPTS, 1118648Sjfranck MOPT_FORCE, 1128648Sjfranck MOPT_UPDATE, 1138648Sjfranck { "bg", 0, ALTF_BG, 1 }, 1148648Sjfranck { "conn", 1, ALTF_NOCONN, 1 }, 1158648Sjfranck { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 1168648Sjfranck { "intr", 0, ALTF_INTR, 1 }, 1178648Sjfranck#ifdef NFSKERB 1188648Sjfranck { "kerb", 0, ALTF_KERB, 1 }, 1198648Sjfranck#endif 1208648Sjfranck { "nfsv3", 0, ALTF_NFSV3, 1 }, 1218648Sjfranck { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 1228648Sjfranck { "mntudp", 0, ALTF_MNTUDP, 1 }, 1238648Sjfranck { "resvport", 0, ALTF_RESVPORT, 1 }, 1248648Sjfranck#ifdef ISO 1258648Sjfranck { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 1268648Sjfranck#endif 1278648Sjfranck { "nqnfs", 0, ALTF_NQNFS, 1 }, 1288648Sjfranck { "soft", 0, ALTF_SOFT, 1 }, 1298648Sjfranck { "tcp", 0, ALTF_TCP, 1 }, 1308648Sjfranck { "port=", 0, ALTF_PORT, 1 }, 1318648Sjfranck { NULL } 1328648Sjfranck}; 1338648Sjfranck 1348648Sjfranckstruct nfs_args nfsdefargs = { 1358648Sjfranck NFS_ARGSVERSION, 1368648Sjfranck (struct sockaddr *)0, 1378648Sjfranck sizeof (struct sockaddr_in), 1388648Sjfranck SOCK_DGRAM, 1398648Sjfranck 0, 1408648Sjfranck (u_char *)0, 1418648Sjfranck 0, 1428648Sjfranck 0, 1438648Sjfranck NFS_WSIZE, 1448648Sjfranck NFS_RSIZE, 1458648Sjfranck NFS_READDIRSIZE, 1468648Sjfranck 10, 1478648Sjfranck NFS_RETRANS, 1488648Sjfranck NFS_MAXGRPS, 1498648Sjfranck NFS_DEFRAHEAD, 1508648Sjfranck NQ_DEFLEASE, 1518648Sjfranck NQ_DEADTHRESH, 1528648Sjfranck (char *)0, 1538648Sjfranck}; 1548648Sjfranck 1558648Sjfranckstruct nfhret { 1568648Sjfranck u_long stat; 1578648Sjfranck long vers; 1588648Sjfranck long auth; 15910462Sjfranck long fhsize; 16010462Sjfranck u_char nfh[NFSX_V3FHMAX]; 16110462Sjfranck}; 16210462Sjfranck#define DEF_RETRY 10000 1638648Sjfranck#define BGRND 1 1648648Sjfranck#define ISBGRND 2 1658648Sjfranckint retrycnt = DEF_RETRY; 1668648Sjfranckint opflags = 0; 1678648Sjfranckint nfsproto = IPPROTO_UDP; 1688648Sjfranckint mnttcp_ok = 1; 1698648Sjfrancku_short port_no = 0; 1708648Sjfranck 1718648Sjfranck#ifdef NFSKERB 172char inst[INST_SZ]; 173char realm[REALM_SZ]; 174struct { 175 u_long kind; 176 KTEXT_ST kt; 177} ktick; 178struct nfsrpc_nickverf kverf; 179struct nfsrpc_fullblock kin, kout; 180NFSKERBKEY_T kivec; 181CREDENTIALS kcr; 182struct timeval ktv; 183NFSKERBKEYSCHED_T kerb_keysched; 184#endif 185 186int getnfsargs __P((char *, struct nfs_args *)); 187#ifdef ISO 188struct iso_addr *iso_addr __P((const char *)); 189#endif 190void set_rpc_maxgrouplist __P((int)); 191void usage __P((void)) __dead2; 192int xdr_dir __P((XDR *, char *)); 193int xdr_fh __P((XDR *, struct nfhret *)); 194 195int 196main(argc, argv) 197 int argc; 198 char *argv[]; 199{ 200 register int c; 201 register struct nfs_args *nfsargsp; 202 struct nfs_args nfsargs; 203 struct nfsd_cargs ncd; 204 int mntflags, altflags, i, nfssvc_flag, num; 205 char *name, *p, *spec; 206 struct vfsconf vfc; 207 int error = 0; 208#ifdef NFSKERB 209 uid_t last_ruid; 210 211 last_ruid = -1; 212 (void)strcpy(realm, KRB_REALM); 213 if (sizeof (struct nfsrpc_nickverf) != RPCX_NICKVERF || 214 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK || 215 ((char *)&ktick.kt) - ((char *)&ktick) != NFSX_UNSIGNED || 216 ((char *)ktick.kt.dat) - ((char *)&ktick) != 2 * NFSX_UNSIGNED) 217 fprintf(stderr, "Yikes! NFSKERB structs not packed!!\n"); 218#endif /* NFSKERB */ 219 retrycnt = DEF_RETRY; 220 221 mntflags = 0; 222 altflags = 0; 223 nfsargs = nfsdefargs; 224 nfsargsp = &nfsargs; 225 while ((c = getopt(argc, argv, 226 "3a:bcdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:U")) != -1) 227 switch (c) { 228 case '3': 229 nfsargsp->flags |= NFSMNT_NFSV3; 230 break; 231 case 'a': 232 num = strtol(optarg, &p, 10); 233 if (*p || num < 0) 234 errx(1, "illegal -a value -- %s", optarg); 235 nfsargsp->readahead = num; 236 nfsargsp->flags |= NFSMNT_READAHEAD; 237 break; 238 case 'b': 239 opflags |= BGRND; 240 break; 241 case 'c': 242 nfsargsp->flags |= NFSMNT_NOCONN; 243 break; 244 case 'D': 245 num = strtol(optarg, &p, 10); 246 if (*p || num <= 0) 247 errx(1, "illegal -D value -- %s", optarg); 248 nfsargsp->deadthresh = num; 249 nfsargsp->flags |= NFSMNT_DEADTHRESH; 250 break; 251 case 'd': 252 nfsargsp->flags |= NFSMNT_DUMBTIMR; 253 break; 254 case 'g': 255 num = strtol(optarg, &p, 10); 256 if (*p || num <= 0) 257 errx(1, "illegal -g value -- %s", optarg); 258#ifdef __FreeBSD__ 259 set_rpc_maxgrouplist(num); 260#endif 261 nfsargsp->maxgrouplist = num; 262 nfsargsp->flags |= NFSMNT_MAXGRPS; 263 break; 264 case 'I': 265 num = strtol(optarg, &p, 10); 266 if (*p || num <= 0) 267 errx(1, "illegal -I value -- %s", optarg); 268 nfsargsp->readdirsize = num; 269 nfsargsp->flags |= NFSMNT_READDIRSIZE; 270 break; 271 case 'i': 272 nfsargsp->flags |= NFSMNT_INT; 273 break; 274#ifdef NFSKERB 275 case 'K': 276 nfsargsp->flags |= NFSMNT_KERB; 277 break; 278#endif 279 case 'L': 280 num = strtol(optarg, &p, 10); 281 if (*p || num < 2) 282 errx(1, "illegal -L value -- %s", optarg); 283 nfsargsp->leaseterm = num; 284 nfsargsp->flags |= NFSMNT_LEASETERM; 285 break; 286 case 'l': 287 nfsargsp->flags |= NFSMNT_RDIRPLUS; 288 break; 289#ifdef NFSKERB 290 case 'm': 291 (void)strncpy(realm, optarg, REALM_SZ - 1); 292 realm[REALM_SZ - 1] = '\0'; 293 break; 294#endif 295 case 'o': 296 getmntopts(optarg, mopts, &mntflags, &altflags); 297 if(altflags & ALTF_BG) 298 opflags |= BGRND; 299 if(altflags & ALTF_NOCONN) 300 nfsargsp->flags |= NFSMNT_NOCONN; 301 if(altflags & ALTF_DUMBTIMR) 302 nfsargsp->flags |= NFSMNT_DUMBTIMR; 303 if(altflags & ALTF_INTR) 304 nfsargsp->flags |= NFSMNT_INT; 305#ifdef NFSKERB 306 if(altflags & ALTF_KERB) 307 nfsargsp->flags |= NFSMNT_KERB; 308#endif 309 if(altflags & ALTF_NFSV3) 310 nfsargsp->flags |= NFSMNT_NFSV3; 311 if(altflags & ALTF_RDIRPLUS) 312 nfsargsp->flags |= NFSMNT_RDIRPLUS; 313 if(altflags & ALTF_MNTUDP) 314 mnttcp_ok = 0; 315 if(altflags & ALTF_RESVPORT) 316 nfsargsp->flags |= NFSMNT_RESVPORT; 317#ifdef ISO 318 if(altflags & ALTF_SEQPACKET) 319 nfsargsp->sotype = SOCK_SEQPACKET; 320#endif 321 if(altflags & ALTF_NQNFS) 322 nfsargsp->flags |= (NFSMNT_NQNFS|NFSMNT_NFSV3); 323 if(altflags & ALTF_SOFT) 324 nfsargsp->flags |= NFSMNT_SOFT; 325 if(altflags & ALTF_TCP) { 326 nfsargsp->sotype = SOCK_STREAM; 327 nfsproto = IPPROTO_TCP; 328 } 329 if(altflags & ALTF_PORT) 330 port_no = atoi(strstr(optarg, "port=") + 5); 331 altflags = 0; 332 break; 333 case 'P': 334 nfsargsp->flags |= NFSMNT_RESVPORT; 335 break; 336#ifdef ISO 337 case 'p': 338 nfsargsp->sotype = SOCK_SEQPACKET; 339 break; 340#endif 341 case 'q': 342 nfsargsp->flags |= (NFSMNT_NQNFS | NFSMNT_NFSV3); 343 break; 344 case 'R': 345 num = strtol(optarg, &p, 10); 346 if (*p || num <= 0) 347 errx(1, "illegal -R value -- %s", optarg); 348 retrycnt = num; 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 nfsargsp->rsize = num; 355 nfsargsp->flags |= NFSMNT_RSIZE; 356 break; 357 case 's': 358 nfsargsp->flags |= NFSMNT_SOFT; 359 break; 360 case 'T': 361 nfsargsp->sotype = SOCK_STREAM; 362 nfsproto = IPPROTO_TCP; 363 break; 364 case 't': 365 num = strtol(optarg, &p, 10); 366 if (*p || num <= 0) 367 errx(1, "illegal -t value -- %s", optarg); 368 nfsargsp->timeo = num; 369 nfsargsp->flags |= NFSMNT_TIMEO; 370 break; 371 case 'w': 372 num = strtol(optarg, &p, 10); 373 if (*p || num <= 0) 374 errx(1, "illegal -w value -- %s", optarg); 375 nfsargsp->wsize = num; 376 nfsargsp->flags |= NFSMNT_WSIZE; 377 break; 378 case 'x': 379 num = strtol(optarg, &p, 10); 380 if (*p || num <= 0) 381 errx(1, "illegal -x value -- %s", optarg); 382 nfsargsp->retrans = num; 383 nfsargsp->flags |= NFSMNT_RETRANS; 384 break; 385 case 'U': 386 mnttcp_ok = 0; 387 break; 388 default: 389 usage(); 390 break; 391 } 392 argc -= optind; 393 argv += optind; 394 395 if (argc != 2) { 396 usage(); 397 /* NOTREACHED */ 398 } 399 400 spec = *argv++; 401 name = *argv; 402 403 if (!getnfsargs(spec, nfsargsp)) 404 exit(1); 405 406#ifdef __FreeBSD__ 407 error = getvfsbyname("nfs", &vfc); 408 if (error && vfsisloadable("nfs")) { 409 if(vfsload("nfs")) 410 err(EX_OSERR, "vfsload(nfs)"); 411 endvfsent(); /* clear cache */ 412 error = getvfsbyname("nfs", &vfc); 413 } 414 if (error) 415 errx(EX_OSERR, "nfs filesystem is not available"); 416 417 if (mount(vfc.vfc_name, name, mntflags, nfsargsp)) 418 err(1, "%s", name); 419#else 420 if (mount("nfs", name, mntflags, nfsargsp)) 421 err(1, "%s", name); 422#endif 423 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 424 if ((opflags & ISBGRND) == 0) { 425 if (i = fork()) { 426 if (i == -1) 427 err(1, "nqnfs 1"); 428 exit(0); 429 } 430 (void) setsid(); 431 (void) close(STDIN_FILENO); 432 (void) close(STDOUT_FILENO); 433 (void) close(STDERR_FILENO); 434 (void) chdir("/"); 435 } 436 openlog("mount_nfs:", LOG_PID, LOG_DAEMON); 437 nfssvc_flag = NFSSVC_MNTD; 438 ncd.ncd_dirp = name; 439 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 440 if (errno != ENEEDAUTH) { 441 syslog(LOG_ERR, "nfssvc err %m"); 442 continue; 443 } 444 nfssvc_flag = 445 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 446#ifdef NFSKERB 447 /* 448 * Set up as ncd_authuid for the kerberos call. 449 * Must set ruid to ncd_authuid and reset the 450 * ticket name iff ncd_authuid is not the same 451 * as last time, so that the right ticket file 452 * is found. 453 * Get the Kerberos credential structure so that 454 * we have the seesion key and get a ticket for 455 * this uid. 456 * For more info see the IETF Draft "Authentication 457 * in ONC RPC". 458 */ 459 if (ncd.ncd_authuid != last_ruid) { 460 char buf[512]; 461 (void)sprintf(buf, "%s%d", 462 TKT_ROOT, ncd.ncd_authuid); 463 krb_set_tkt_string(buf); 464 last_ruid = ncd.ncd_authuid; 465 } 466 setreuid(ncd.ncd_authuid, 0); 467 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 468 if (kret == RET_NOTKT) { 469 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 470 DEFAULT_TKT_LIFE); 471 if (kret == KSUCCESS) 472 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 473 &kcr); 474 } 475 if (kret == KSUCCESS) 476 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 477 realm, 0); 478 479 /* 480 * Fill in the AKN_FULLNAME authenticator and verfier. 481 * Along with the Kerberos ticket, we need to build 482 * the timestamp verifier and encrypt it in CBC mode. 483 */ 484 if (kret == KSUCCESS && 485 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 486 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 487 ncd.ncd_authtype = RPCAUTH_KERB4; 488 ncd.ncd_authstr = (u_char *)&ktick; 489 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 490 3 * NFSX_UNSIGNED; 491 ncd.ncd_verfstr = (u_char *)&kverf; 492 ncd.ncd_verflen = sizeof (kverf); 493 memmove(ncd.ncd_key, kcr.session, 494 sizeof (kcr.session)); 495 kin.t1 = htonl(ktv.tv_sec); 496 kin.t2 = htonl(ktv.tv_usec); 497 kin.w1 = htonl(NFS_KERBTTL); 498 kin.w2 = htonl(NFS_KERBTTL - 1); 499 bzero((caddr_t)kivec, sizeof (kivec)); 500 501 /* 502 * Encrypt kin in CBC mode using the session 503 * key in kcr. 504 */ 505 XXX 506 507 /* 508 * Finally, fill the timestamp verifier into the 509 * authenticator and verifier. 510 */ 511 ktick.kind = htonl(RPCAKN_FULLNAME); 512 kverf.kind = htonl(RPCAKN_FULLNAME); 513 NFS_KERBW1(ktick.kt) = kout.w1; 514 ktick.kt.length = htonl(ktick.kt.length); 515 kverf.verf.t1 = kout.t1; 516 kverf.verf.t2 = kout.t2; 517 kverf.verf.w2 = kout.w2; 518 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 519 } 520 setreuid(0, 0); 521#endif /* NFSKERB */ 522 } 523 } 524 exit(0); 525} 526 527int 528getnfsargs(spec, nfsargsp) 529 char *spec; 530 struct nfs_args *nfsargsp; 531{ 532 register CLIENT *clp; 533 struct hostent *hp; 534 static struct sockaddr_in saddr; 535#ifdef ISO 536 static struct sockaddr_iso isoaddr; 537 struct iso_addr *isop; 538 int isoflag = 0; 539#endif 540 struct timeval pertry, try; 541 enum clnt_stat clnt_stat; 542 int so = RPC_ANYSOCK, i, nfsvers, mntvers; 543 char *hostp, *delimp; 544#ifdef NFSKERB 545 char *cp; 546#endif 547 u_short tport; 548 static struct nfhret nfhret; 549 static char nam[MNAMELEN + 1]; 550 551 strncpy(nam, spec, MNAMELEN); 552 nam[MNAMELEN] = '\0'; 553 if ((delimp = strchr(spec, '@')) != NULL) { 554 hostp = delimp + 1; 555 } else if ((delimp = strchr(spec, ':')) != NULL) { 556 hostp = spec; 557 spec = delimp + 1; 558 } else { 559 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 560 return (0); 561 } 562 *delimp = '\0'; 563 /* 564 * DUMB!! Until the mount protocol works on iso transport, we must 565 * supply both an iso and an inet address for the host. 566 */ 567#ifdef ISO 568 if (!strncmp(hostp, "iso=", 4)) { 569 u_short isoport; 570 571 hostp += 4; 572 isoflag++; 573 if ((delimp = strchr(hostp, '+')) == NULL) { 574 warnx("no iso+inet address"); 575 return (0); 576 } 577 *delimp = '\0'; 578 if ((isop = iso_addr(hostp)) == NULL) { 579 warnx("bad ISO address"); 580 return (0); 581 } 582 memset(&isoaddr, 0, sizeof (isoaddr)); 583 memmove(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 584 isoaddr.siso_len = sizeof (isoaddr); 585 isoaddr.siso_family = AF_ISO; 586 isoaddr.siso_tlen = 2; 587 isoport = htons(NFS_PORT); 588 memmove(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 589 hostp = delimp + 1; 590 } 591#endif /* ISO */ 592 593 /* 594 * Handle an internet host address and reverse resolve it if 595 * doing Kerberos. 596 */ 597 if (isdigit(*hostp)) { 598 if ((saddr.sin_addr.s_addr = inet_addr(hostp)) == -1) { 599 warnx("bad net address %s", hostp); 600 return (0); 601 } 602 } else if ((hp = gethostbyname(hostp)) != NULL) 603 memmove(&saddr.sin_addr, hp->h_addr, hp->h_length); 604 else { 605 warnx("can't get net id for host"); 606 return (0); 607 } 608#ifdef NFSKERB 609 if ((nfsargsp->flags & NFSMNT_KERB)) { 610 if ((hp = gethostbyaddr((char *)&saddr.sin_addr.s_addr, 611 sizeof (u_long), AF_INET)) == (struct hostent *)0) { 612 warnx("can't reverse resolve net address"); 613 return (0); 614 } 615 memmove(&saddr.sin_addr, hp->h_addr, hp->h_length); 616 strncpy(inst, hp->h_name, INST_SZ); 617 inst[INST_SZ - 1] = '\0'; 618 if (cp = strchr(inst, '.')) 619 *cp = '\0'; 620 } 621#endif /* NFSKERB */ 622 623 if (nfsargsp->flags & NFSMNT_NFSV3) { 624 nfsvers = 3; 625 mntvers = 3; 626 } else { 627 nfsvers = 2; 628 mntvers = 1; 629 } 630 nfhret.stat = EACCES; /* Mark not yet successful */ 631 while (retrycnt > 0) { 632 saddr.sin_family = AF_INET; 633 saddr.sin_port = htons(PMAPPORT); 634 if ((tport = port_no ? port_no : 635 pmap_getport(&saddr, RPCPROG_NFS, 636 nfsvers, nfsproto)) == 0) { 637 if ((opflags & ISBGRND) == 0) 638 clnt_pcreateerror("NFS Portmap"); 639 } else { 640 saddr.sin_port = 0; 641 pertry.tv_sec = 10; 642 pertry.tv_usec = 0; 643 if (mnttcp_ok && nfsargsp->sotype == SOCK_STREAM) 644 clp = clnttcp_create(&saddr, RPCPROG_MNT, mntvers, 645 &so, 0, 0); 646 else 647 clp = clntudp_create(&saddr, RPCPROG_MNT, mntvers, 648 pertry, &so); 649 if (clp == NULL) { 650 if ((opflags & ISBGRND) == 0) 651 clnt_pcreateerror("Cannot MNT RPC"); 652 } else { 653 clp->cl_auth = authunix_create_default(); 654 try.tv_sec = 10; 655 try.tv_usec = 0; 656 if (nfsargsp->flags & NFSMNT_KERB) 657 nfhret.auth = RPCAUTH_KERB4; 658 else 659 nfhret.auth = RPCAUTH_UNIX; 660 nfhret.vers = mntvers; 661 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 662 xdr_dir, spec, xdr_fh, &nfhret, try); 663 if (clnt_stat != RPC_SUCCESS) { 664 if ((opflags & ISBGRND) == 0) 665 warnx("%s", clnt_sperror(clp, 666 "bad MNT RPC")); 667 } else { 668 auth_destroy(clp->cl_auth); 669 clnt_destroy(clp); 670 retrycnt = 0; 671 } 672 } 673 } 674 if (--retrycnt > 0) { 675 if (opflags & BGRND) { 676 opflags &= ~BGRND; 677 if (i = fork()) { 678 if (i == -1) 679 err(1, "nqnfs 2"); 680 exit(0); 681 } 682 (void) setsid(); 683 (void) close(STDIN_FILENO); 684 (void) close(STDOUT_FILENO); 685 (void) close(STDERR_FILENO); 686 (void) chdir("/"); 687 opflags |= ISBGRND; 688 } 689 sleep(60); 690 } 691 } 692 if (nfhret.stat) { 693 if (opflags & ISBGRND) 694 exit(1); 695 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 696 return (0); 697 } 698 saddr.sin_port = htons(tport); 699#ifdef ISO 700 if (isoflag) { 701 nfsargsp->addr = (struct sockaddr *) &isoaddr; 702 nfsargsp->addrlen = sizeof (isoaddr); 703 } else 704#endif /* ISO */ 705 { 706 nfsargsp->addr = (struct sockaddr *) &saddr; 707 nfsargsp->addrlen = sizeof (saddr); 708 } 709 nfsargsp->fh = nfhret.nfh; 710 nfsargsp->fhsize = nfhret.fhsize; 711 nfsargsp->hostname = nam; 712 return (1); 713} 714 715/* 716 * xdr routines for mount rpc's 717 */ 718int 719xdr_dir(xdrsp, dirp) 720 XDR *xdrsp; 721 char *dirp; 722{ 723 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 724} 725 726int 727xdr_fh(xdrsp, np) 728 XDR *xdrsp; 729 register struct nfhret *np; 730{ 731 register int i; 732 long auth, authcnt, authfnd = 0; 733 734 if (!xdr_u_long(xdrsp, &np->stat)) 735 return (0); 736 if (np->stat) 737 return (1); 738 switch (np->vers) { 739 case 1: 740 np->fhsize = NFSX_V2FH; 741 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 742 case 3: 743 if (!xdr_long(xdrsp, &np->fhsize)) 744 return (0); 745 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 746 return (0); 747 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 748 return (0); 749 if (!xdr_long(xdrsp, &authcnt)) 750 return (0); 751 for (i = 0; i < authcnt; i++) { 752 if (!xdr_long(xdrsp, &auth)) 753 return (0); 754 if (auth == np->auth) 755 authfnd++; 756 } 757 /* 758 * Some servers, such as DEC's OSF/1 return a nil authenticator 759 * list to indicate RPCAUTH_UNIX. 760 */ 761 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 762 np->stat = EAUTH; 763 return (1); 764 }; 765 return (0); 766} 767 768void 769usage() 770{ 771 (void)fprintf(stderr, "\ 772usage: mount_nfs [-3KPTUbcdilqs] [-D deadthresh] [-I readdirsize]\n\ 773 [-L leaseterm] [-R retrycnt] [-a maxreadahead] [-g maxgroups]\n\ 774 [-m realm] [-o options] [-r readsize] [-t timeout] [-w writesize]\n\ 775 [-x retrans] rhost:path node\n"); 776 exit(1); 777} 778