mount_nfs.c revision 1.13
1 /* $NetBSD: mount_nfs.c,v 1.13 1996/05/23 22:52:49 fvdl Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #ifndef lint 40 static char copyright[] = 41 "@(#) Copyright (c) 1992, 1993, 1994\n\ 42 The Regents of the University of California. All rights reserved.\n"; 43 #endif /* not lint */ 44 45 #ifndef lint 46 #if 0 47 static char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95"; 48 #else 49 static char rcsid[] = "$NetBSD: mount_nfs.c,v 1.13 1996/05/23 22:52:49 fvdl Exp $"; 50 #endif 51 #endif /* not lint */ 52 53 #include <sys/param.h> 54 #include <sys/mount.h> 55 #include <sys/socket.h> 56 #include <sys/socketvar.h> 57 #include <sys/stat.h> 58 #include <syslog.h> 59 60 #include <rpc/rpc.h> 61 #include <rpc/pmap_clnt.h> 62 #include <rpc/pmap_prot.h> 63 64 #ifdef ISO 65 #include <netiso/iso.h> 66 #endif 67 68 #ifdef NFSKERB 69 #include <kerberosIV/des.h> 70 #include <kerberosIV/krb.h> 71 #endif 72 73 #include <nfs/rpcv2.h> 74 #include <nfs/nfsproto.h> 75 #define _KERNEL 76 #include <nfs/nfs.h> 77 #undef _KERNEL 78 #include <nfs/nqnfs.h> 79 80 #include <arpa/inet.h> 81 82 #include <ctype.h> 83 #include <err.h> 84 #include <errno.h> 85 #include <fcntl.h> 86 #include <netdb.h> 87 #include <signal.h> 88 #include <stdio.h> 89 #include <stdlib.h> 90 #include <strings.h> 91 #include <unistd.h> 92 93 #include "mntopts.h" 94 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_NFSV2 0x2000 109 110 const 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 { "nfsv2", 0, ALTF_NFSV2, 1 }, 132 { NULL } 133 }; 134 135 struct nfs_args nfsdefargs = { 136 NFS_ARGSVERSION, 137 (struct sockaddr *)0, 138 sizeof (struct sockaddr_in), 139 SOCK_DGRAM, 140 0, 141 (u_char *)0, 142 0, 143 NFSMNT_NFSV3, 144 NFS_WSIZE, 145 NFS_RSIZE, 146 NFS_READDIRSIZE, 147 10, 148 NFS_RETRANS, 149 NFS_MAXGRPS, 150 NFS_DEFRAHEAD, 151 NQ_DEFLEASE, 152 NQ_DEADTHRESH, 153 (char *)0, 154 }; 155 156 struct nfhret { 157 u_long stat; 158 long vers; 159 long auth; 160 long fhsize; 161 u_char nfh[NFSX_V3FHMAX]; 162 }; 163 #define DEF_RETRY 10000 164 #define BGRND 1 165 #define ISBGRND 2 166 int retrycnt; 167 int opflags = 0; 168 int nfsproto = IPPROTO_UDP; 169 int mnttcp_ok = 1; 170 int force2 = 0; 171 int force3 = 0; 172 173 #ifdef NFSKERB 174 char inst[INST_SZ]; 175 char realm[REALM_SZ]; 176 struct { 177 u_long kind; 178 KTEXT_ST kt; 179 } ktick; 180 struct nfsrpc_nickverf kverf; 181 struct nfsrpc_fullblock kin, kout; 182 NFSKERBKEY_T kivec; 183 CREDENTIALS kcr; 184 struct timeval ktv; 185 NFSKERBKEYSCHED_T kerb_keysched; 186 #endif 187 188 int getnfsargs __P((char *, struct nfs_args *)); 189 #ifdef ISO 190 struct iso_addr *iso_addr __P((const char *)); 191 #endif 192 void set_rpc_maxgrouplist __P((int)); 193 __dead void usage __P((void)); 194 int xdr_dir __P((XDR *, char *)); 195 int xdr_fh __P((XDR *, struct nfhret *)); 196 197 int 198 main(argc, argv) 199 int argc; 200 char *argv[]; 201 { 202 register int c; 203 register struct nfs_args *nfsargsp; 204 struct nfs_args nfsargs; 205 struct nfsd_cargs ncd; 206 int mntflags, altflags, i, nfssvc_flag, num; 207 char *name, *p, *spec; 208 int error = 0; 209 #ifdef NFSKERB 210 uid_t last_ruid; 211 212 last_ruid = -1; 213 if (krb_get_lrealm(realm, 0) != KSUCCESS) 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"); 220 221 #endif 222 retrycnt = DEF_RETRY; 223 224 mntflags = 0; 225 altflags = 0; 226 nfsargs = nfsdefargs; 227 nfsargsp = &nfsargs; 228 while ((c = getopt(argc, argv, 229 "23a:bcdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:U")) != EOF) 230 switch (c) { 231 case '3': 232 if (force2) 233 errx(1, "-2 and -3 are mutually exclusive"); 234 force3 = 1; 235 break; 236 case '2': 237 if (force3) 238 errx(1, "-2 and -3 are mutually exclusive"); 239 force2 = 1; 240 nfsargsp->flags &= ~NFSMNT_NFSV3; 241 break; 242 case 'a': 243 num = strtol(optarg, &p, 10); 244 if (*p || num < 0) 245 errx(1, "illegal -a value -- %s", optarg); 246 nfsargsp->readahead = num; 247 nfsargsp->flags |= NFSMNT_READAHEAD; 248 break; 249 case 'b': 250 opflags |= BGRND; 251 break; 252 case 'c': 253 nfsargsp->flags |= NFSMNT_NOCONN; 254 break; 255 case 'D': 256 num = strtol(optarg, &p, 10); 257 if (*p || num <= 0) 258 errx(1, "illegal -D value -- %s", optarg); 259 nfsargsp->deadthresh = num; 260 nfsargsp->flags |= NFSMNT_DEADTHRESH; 261 break; 262 case 'd': 263 nfsargsp->flags |= NFSMNT_DUMBTIMR; 264 break; 265 #if 0 /* XXXX */ 266 case 'g': 267 num = strtol(optarg, &p, 10); 268 if (*p || num <= 0) 269 errx(1, "illegal -g value -- %s", optarg); 270 set_rpc_maxgrouplist(num); 271 nfsargsp->maxgrouplist = num; 272 nfsargsp->flags |= NFSMNT_MAXGRPS; 273 break; 274 #endif 275 case 'I': 276 num = strtol(optarg, &p, 10); 277 if (*p || num <= 0) 278 errx(1, "illegal -I value -- %s", optarg); 279 nfsargsp->readdirsize = num; 280 nfsargsp->flags |= NFSMNT_READDIRSIZE; 281 break; 282 case 'i': 283 nfsargsp->flags |= NFSMNT_INT; 284 break; 285 #ifdef NFSKERB 286 case 'K': 287 nfsargsp->flags |= NFSMNT_KERB; 288 break; 289 #endif 290 case 'L': 291 num = strtol(optarg, &p, 10); 292 if (*p || num < 2) 293 errx(1, "illegal -L value -- %s", optarg); 294 nfsargsp->leaseterm = num; 295 nfsargsp->flags |= NFSMNT_LEASETERM; 296 break; 297 case 'l': 298 nfsargsp->flags |= NFSMNT_RDIRPLUS; 299 break; 300 #ifdef NFSKERB 301 case 'm': 302 (void)strncpy(realm, optarg, REALM_SZ - 1); 303 realm[REALM_SZ - 1] = '\0'; 304 break; 305 #endif 306 case 'o': 307 getmntopts(optarg, mopts, &mntflags, &altflags); 308 if(altflags & ALTF_BG) 309 opflags |= BGRND; 310 if(altflags & ALTF_NOCONN) 311 nfsargsp->flags |= NFSMNT_NOCONN; 312 if(altflags & ALTF_DUMBTIMR) 313 nfsargsp->flags |= NFSMNT_DUMBTIMR; 314 if(altflags & ALTF_INTR) 315 nfsargsp->flags |= NFSMNT_INT; 316 #ifdef NFSKERB 317 if(altflags & ALTF_KERB) 318 nfsargsp->flags |= NFSMNT_KERB; 319 #endif 320 if(altflags & ALTF_NFSV3) { 321 if (force2) 322 errx(1,"conflicting version options"); 323 force3 = 1; 324 } 325 if(altflags & ALTF_NFSV2) { 326 if (force3) 327 errx(1,"conflicting version options"); 328 force2 = 1; 329 nfsargsp->flags &= ~NFSMNT_NFSV3; 330 } 331 if(altflags & ALTF_RDIRPLUS) 332 nfsargsp->flags |= NFSMNT_RDIRPLUS; 333 if(altflags & ALTF_MNTUDP) 334 mnttcp_ok = 0; 335 if(altflags & ALTF_RESVPORT) 336 nfsargsp->flags |= NFSMNT_RESVPORT; 337 #ifdef ISO 338 if(altflags & ALTF_SEQPACKET) 339 nfsargsp->sotype = SOCK_SEQPACKET; 340 #endif 341 if(altflags & ALTF_NQNFS) { 342 if (force2) 343 errx(1,"nqnfs only available with v3"); 344 force3 = 1; 345 nfsargsp->flags |= NFSMNT_NQNFS; 346 } 347 if(altflags & ALTF_SOFT) 348 nfsargsp->flags |= NFSMNT_SOFT; 349 if(altflags & ALTF_TCP) { 350 nfsargsp->sotype = SOCK_STREAM; 351 nfsproto = IPPROTO_TCP; 352 } 353 altflags = 0; 354 break; 355 case 'P': 356 nfsargsp->flags |= NFSMNT_RESVPORT; 357 break; 358 #ifdef ISO 359 case 'p': 360 nfsargsp->sotype = SOCK_SEQPACKET; 361 break; 362 #endif 363 case 'q': 364 if (force2) 365 errx(1,"nqnfs only available with v3"); 366 force3 = 1; 367 nfsargsp->flags |= NFSMNT_NQNFS; 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(); 422 423 spec = *argv++; 424 name = *argv; 425 426 if (!getnfsargs(spec, nfsargsp)) 427 exit(1); 428 if (mount(MOUNT_NFS, name, mntflags, nfsargsp)) 429 err(1, "%s", name); 430 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 431 if ((opflags & ISBGRND) == 0) { 432 if (i = fork()) { 433 if (i == -1) 434 err(1, "nqnfs 1"); 435 exit(0); 436 } 437 (void) setsid(); 438 (void) close(STDIN_FILENO); 439 (void) close(STDOUT_FILENO); 440 (void) close(STDERR_FILENO); 441 (void) chdir("/"); 442 } 443 openlog("mount_nfs:", LOG_PID, LOG_DAEMON); 444 nfssvc_flag = NFSSVC_MNTD; 445 ncd.ncd_dirp = name; 446 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 447 if (errno != ENEEDAUTH) { 448 syslog(LOG_ERR, "nfssvc err %m"); 449 continue; 450 } 451 nfssvc_flag = 452 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 453 #ifdef NFSKERB 454 /* 455 * Set up as ncd_authuid for the kerberos call. 456 * Must set ruid to ncd_authuid and reset the 457 * ticket name iff ncd_authuid is not the same 458 * as last time, so that the right ticket file 459 * is found. 460 * Get the Kerberos credential structure so that 461 * we have the seesion key and get a ticket for 462 * this uid. 463 * For more info see the IETF Draft "Authentication 464 * in ONC RPC". 465 */ 466 if (ncd.ncd_authuid != last_ruid) { 467 krb_set_tkt_string(""); 468 last_ruid = ncd.ncd_authuid; 469 } 470 setreuid(ncd.ncd_authuid, 0); 471 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 472 if (kret == RET_NOTKT) { 473 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 474 DEFAULT_TKT_LIFE); 475 if (kret == KSUCCESS) 476 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 477 &kcr); 478 } 479 if (kret == KSUCCESS) 480 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 481 realm, 0); 482 483 /* 484 * Fill in the AKN_FULLNAME authenticator and verfier. 485 * Along with the Kerberos ticket, we need to build 486 * the timestamp verifier and encrypt it in CBC mode. 487 */ 488 if (kret == KSUCCESS && 489 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 490 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 491 ncd.ncd_authtype = RPCAUTH_KERB4; 492 ncd.ncd_authstr = (u_char *)&ktick; 493 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 494 3 * NFSX_UNSIGNED; 495 ncd.ncd_verfstr = (u_char *)&kverf; 496 ncd.ncd_verflen = sizeof (kverf); 497 memmove(ncd.ncd_key, kcr.session, 498 sizeof (kcr.session)); 499 kin.t1 = htonl(ktv.tv_sec); 500 kin.t2 = htonl(ktv.tv_usec); 501 kin.w1 = htonl(NFS_KERBTTL); 502 kin.w2 = htonl(NFS_KERBTTL - 1); 503 bzero((caddr_t)kivec, sizeof (kivec)); 504 505 /* 506 * Encrypt kin in CBC mode using the session 507 * key in kcr. 508 */ 509 XXX 510 511 /* 512 * Finally, fill the timestamp verifier into the 513 * authenticator and verifier. 514 */ 515 ktick.kind = htonl(RPCAKN_FULLNAME); 516 kverf.kind = htonl(RPCAKN_FULLNAME); 517 NFS_KERBW1(ktick.kt) = kout.w1; 518 ktick.kt.length = htonl(ktick.kt.length); 519 kverf.verf.t1 = kout.t1; 520 kverf.verf.t2 = kout.t2; 521 kverf.verf.w2 = kout.w2; 522 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 523 } 524 setreuid(0, 0); 525 #endif /* NFSKERB */ 526 } 527 } 528 exit(0); 529 } 530 531 int 532 getnfsargs(spec, nfsargsp) 533 char *spec; 534 struct nfs_args *nfsargsp; 535 { 536 register CLIENT *clp; 537 struct hostent *hp; 538 static struct sockaddr_in saddr; 539 #ifdef ISO 540 static struct sockaddr_iso isoaddr; 541 struct iso_addr *isop; 542 int isoflag = 0; 543 #endif 544 struct timeval pertry, try; 545 enum clnt_stat clnt_stat; 546 int so = RPC_ANYSOCK, i, nfsvers, mntvers, orgcnt; 547 char *hostp, *delimp; 548 #ifdef NFSKERB 549 char *cp; 550 #endif 551 u_short tport; 552 static struct nfhret nfhret; 553 static char nam[MNAMELEN + 1]; 554 555 strncpy(nam, spec, MNAMELEN); 556 nam[MNAMELEN] = '\0'; 557 if ((delimp = strchr(spec, '@')) != NULL) { 558 hostp = delimp + 1; 559 } else if ((delimp = strchr(spec, ':')) != NULL) { 560 hostp = spec; 561 spec = delimp + 1; 562 } else { 563 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 564 return (0); 565 } 566 *delimp = '\0'; 567 /* 568 * DUMB!! Until the mount protocol works on iso transport, we must 569 * supply both an iso and an inet address for the host. 570 */ 571 #ifdef ISO 572 if (!strncmp(hostp, "iso=", 4)) { 573 u_short isoport; 574 575 hostp += 4; 576 isoflag++; 577 if ((delimp = strchr(hostp, '+')) == NULL) { 578 warnx("no iso+inet address"); 579 return (0); 580 } 581 *delimp = '\0'; 582 if ((isop = iso_addr(hostp)) == NULL) { 583 warnx("bad ISO address"); 584 return (0); 585 } 586 memset(&isoaddr, 0, sizeof (isoaddr)); 587 memcpy(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 588 isoaddr.siso_len = sizeof (isoaddr); 589 isoaddr.siso_family = AF_ISO; 590 isoaddr.siso_tlen = 2; 591 isoport = htons(NFS_PORT); 592 memcpy(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 593 hostp = delimp + 1; 594 } 595 #endif /* ISO */ 596 597 /* 598 * Handle an internet host address and reverse resolve it if 599 * doing Kerberos. 600 */ 601 if (inet_aton(hostp, &saddr.sin_addr) != 0) { 602 if ((nfsargsp->flags & NFSMNT_KERB)) { 603 if ((hp = gethostbyaddr((char *)&saddr.sin_addr.s_addr, 604 sizeof (u_long), AF_INET)) == (struct hostent *)0) { 605 warnx("can't reverse resolve net address"); 606 return (0); 607 } 608 } 609 } else { 610 hp = gethostbyname(hostp); 611 if (hp == NULL) { 612 warnx("can't get net id for host"); 613 return (0); 614 } 615 memcpy(&saddr.sin_addr, hp->h_addr, hp->h_length); 616 } 617 #ifdef NFSKERB 618 if (nfsargsp->flags & NFSMNT_KERB) { 619 strncpy(inst, hp->h_name, INST_SZ); 620 inst[INST_SZ - 1] = '\0'; 621 if (cp = strchr(inst, '.')) 622 *cp = '\0'; 623 } 624 #endif /* NFSKERB */ 625 626 if (force2) { 627 nfsvers = NFS_VER2; 628 mntvers = RPCMNT_VER1; 629 } else { 630 nfsvers = NFS_VER3; 631 mntvers = RPCMNT_VER3; 632 } 633 orgcnt = retrycnt; 634 tryagain: 635 nfhret.stat = EACCES; /* Mark not yet successful */ 636 while (retrycnt > 0) { 637 saddr.sin_family = AF_INET; 638 saddr.sin_port = htons(PMAPPORT); 639 if ((tport = pmap_getport(&saddr, RPCPROG_NFS, 640 nfsvers, nfsargsp->sotype == SOCK_STREAM ? IPPROTO_TCP : 641 IPPROTO_UDP)) == 0) { 642 if ((opflags & ISBGRND) == 0) 643 clnt_pcreateerror("NFS Portmap"); 644 } else { 645 saddr.sin_port = 0; 646 pertry.tv_sec = 10; 647 pertry.tv_usec = 0; 648 if (mnttcp_ok && nfsargsp->sotype == SOCK_STREAM) 649 clp = clnttcp_create(&saddr, RPCPROG_MNT, mntvers, 650 &so, 0, 0); 651 else 652 clp = clntudp_create(&saddr, RPCPROG_MNT, mntvers, 653 pertry, &so); 654 if (clp == NULL) { 655 if ((opflags & ISBGRND) == 0) 656 clnt_pcreateerror("Cannot MNT PRC"); 657 } else { 658 clp->cl_auth = authunix_create_default(); 659 try.tv_sec = 10; 660 try.tv_usec = 0; 661 if (nfsargsp->flags & NFSMNT_KERB) 662 nfhret.auth = RPCAUTH_KERB4; 663 else 664 nfhret.auth = RPCAUTH_UNIX; 665 nfhret.vers = mntvers; 666 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 667 xdr_dir, spec, xdr_fh, &nfhret, try); 668 if (clnt_stat != RPC_SUCCESS) { 669 if (clnt_stat == RPC_PROGVERSMISMATCH) { 670 if (nfsvers == NFS_VER3 && 671 !force3) { 672 retrycnt = orgcnt; 673 nfsvers = NFS_VER2; 674 mntvers = RPCMNT_VER1; 675 nfsargsp->flags &= 676 ~NFSMNT_NFSV3; 677 goto tryagain; 678 } else { 679 errx(1, "%s", 680 clnt_sperror(clp, 681 "MNT RPC")); 682 } 683 } 684 if ((opflags & ISBGRND) == 0) 685 warnx("%s", clnt_sperror(clp, 686 "bad MNT RPC")); 687 } else { 688 auth_destroy(clp->cl_auth); 689 clnt_destroy(clp); 690 retrycnt = 0; 691 } 692 } 693 } 694 if (--retrycnt > 0) { 695 if (opflags & BGRND) { 696 opflags &= ~BGRND; 697 if (i = fork()) { 698 if (i == -1) 699 err(1, "nqnfs 2"); 700 exit(0); 701 } 702 (void) setsid(); 703 (void) close(STDIN_FILENO); 704 (void) close(STDOUT_FILENO); 705 (void) close(STDERR_FILENO); 706 (void) chdir("/"); 707 opflags |= ISBGRND; 708 } 709 sleep(60); 710 } 711 } 712 if (nfhret.stat) { 713 if (opflags & ISBGRND) 714 exit(1); 715 errno = nfhret.stat; 716 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 717 return (0); 718 } 719 saddr.sin_port = htons(tport); 720 #ifdef ISO 721 if (isoflag) { 722 nfsargsp->addr = (struct sockaddr *) &isoaddr; 723 nfsargsp->addrlen = sizeof (isoaddr); 724 } else 725 #endif /* ISO */ 726 { 727 nfsargsp->addr = (struct sockaddr *) &saddr; 728 nfsargsp->addrlen = sizeof (saddr); 729 } 730 nfsargsp->fh = nfhret.nfh; 731 nfsargsp->fhsize = nfhret.fhsize; 732 nfsargsp->hostname = nam; 733 return (1); 734 } 735 736 /* 737 * xdr routines for mount rpc's 738 */ 739 int 740 xdr_dir(xdrsp, dirp) 741 XDR *xdrsp; 742 char *dirp; 743 { 744 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 745 } 746 747 int 748 xdr_fh(xdrsp, np) 749 XDR *xdrsp; 750 register struct nfhret *np; 751 { 752 register int i; 753 long auth, authcnt, authfnd = 0; 754 755 if (!xdr_u_long(xdrsp, &np->stat)) 756 return (0); 757 if (np->stat) 758 return (1); 759 switch (np->vers) { 760 case 1: 761 np->fhsize = NFSX_V2FH; 762 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 763 case 3: 764 if (!xdr_long(xdrsp, &np->fhsize)) 765 return (0); 766 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 767 return (0); 768 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 769 return (0); 770 if (!xdr_long(xdrsp, &authcnt)) 771 return (0); 772 for (i = 0; i < authcnt; i++) { 773 if (!xdr_long(xdrsp, &auth)) 774 return (0); 775 if (auth == np->auth) 776 authfnd++; 777 } 778 /* 779 * Some servers, such as DEC's OSF/1 return a nil authenticator 780 * list to indicate RPCAUTH_UNIX. 781 */ 782 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 783 np->stat = EAUTH; 784 return (1); 785 }; 786 return (0); 787 } 788 789 __dead void 790 usage() 791 { 792 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n", 793 "[-23bcdiKklMPqsT] [-a maxreadahead] [-D deadthresh]", 794 "\t[-g maxgroups] [-L leaseterm] [-m realm] [-o options] [-R retrycnt]", 795 "\t[-r readsize] [-t timeout] [-w writesize] [-x retrans]", 796 "\trhost:path node"); 797 exit(1); 798 } 799
Indexes created Mon Sep 29 13:09:55 GMT 2025