mount_nfs.c revision 1.20
1 /* $NetBSD: mount_nfs.c,v 1.20 1998/03/01 02:20:49 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 #include <sys/cdefs.h> 40 #ifndef lint 41 __COPYRIGHT("@(#) 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 __RCSID("$NetBSD: mount_nfs.c,v 1.20 1998/03/01 02:20:49 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 #include <nfs/nfsmount.h> 80 81 #include <arpa/inet.h> 82 83 #include <ctype.h> 84 #include <err.h> 85 #include <errno.h> 86 #include <fcntl.h> 87 #include <netdb.h> 88 #include <signal.h> 89 #include <stdio.h> 90 #include <stdlib.h> 91 #include <string.h> 92 #include <unistd.h> 93 94 #include "mntopts.h" 95 96 #define ALTF_BG 0x1 97 #define ALTF_CONN 0x2 98 #define ALTF_DUMBTIMR 0x4 99 #define ALTF_INTR 0x8 100 #define ALTF_KERB 0x10 101 #define ALTF_NFSV3 0x20 102 #define ALTF_RDIRPLUS 0x40 103 #define ALTF_MNTUDP 0x80 104 #define ALTF_NORESPORT 0x100 105 #define ALTF_SEQPACKET 0x200 106 #define ALTF_NQNFS 0x400 107 #define ALTF_SOFT 0x800 108 #define ALTF_TCP 0x1000 109 #define ALTF_NFSV2 0x2000 110 111 const struct mntopt mopts[] = { 112 MOPT_STDOPTS, 113 MOPT_FORCE, 114 MOPT_UPDATE, 115 { "bg", 0, ALTF_BG, 1 }, 116 { "conn", 0, ALTF_CONN, 1 }, 117 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 118 { "intr", 0, ALTF_INTR, 1 }, 119 #ifdef NFSKERB 120 { "kerb", 0, ALTF_KERB, 1 }, 121 #endif 122 { "nfsv3", 0, ALTF_NFSV3, 1 }, 123 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 124 { "mntudp", 0, ALTF_MNTUDP, 1 }, 125 { "noresport", 0, ALTF_NORESPORT, 1 }, 126 #ifdef ISO 127 { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 128 #endif 129 { "nqnfs", 0, ALTF_NQNFS, 1 }, 130 { "soft", 0, ALTF_SOFT, 1 }, 131 { "tcp", 0, ALTF_TCP, 1 }, 132 { "nfsv2", 0, ALTF_NFSV2, 1 }, 133 { NULL } 134 }; 135 136 struct nfs_args nfsdefargs = { 137 NFS_ARGSVERSION, 138 (struct sockaddr *)0, 139 sizeof (struct sockaddr_in), 140 SOCK_DGRAM, 141 0, 142 (u_char *)0, 143 0, 144 NFSMNT_NFSV3|NFSMNT_NOCONN|NFSMNT_RESVPORT, 145 NFS_WSIZE, 146 NFS_RSIZE, 147 NFS_READDIRSIZE, 148 10, 149 NFS_RETRANS, 150 NFS_MAXGRPS, 151 NFS_DEFRAHEAD, 152 NQ_DEFLEASE, 153 NQ_DEADTHRESH, 154 (char *)0, 155 }; 156 157 struct nfhret { 158 u_long stat; 159 long vers; 160 long auth; 161 long fhsize; 162 u_char nfh[NFSX_V3FHMAX]; 163 }; 164 #define DEF_RETRY 10000 165 #define BGRND 1 166 #define ISBGRND 2 167 int retrycnt; 168 int opflags = 0; 169 int nfsproto = IPPROTO_UDP; 170 int mnttcp_ok = 1; 171 int force2 = 0; 172 int force3 = 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 int main __P((int, char *[])); 194 void set_rpc_maxgrouplist __P((int)); 195 void usage __P((void)); 196 int xdr_dir __P((XDR *, char *)); 197 int xdr_fh __P((XDR *, struct nfhret *)); 198 199 int 200 main(argc, argv) 201 int argc; 202 char *argv[]; 203 { 204 int c; 205 struct nfs_args *nfsargsp; 206 struct nfs_args nfsargs; 207 struct nfsd_cargs ncd; 208 int mntflags, altflags, i, nfssvc_flag, num; 209 char *name, *p, *spec; 210 #ifdef NFSKERB 211 uid_t last_ruid; 212 213 last_ruid = -1; 214 if (krb_get_lrealm(realm, 0) != KSUCCESS) 215 (void)strcpy(realm, KRB_REALM); 216 if (sizeof (struct nfsrpc_nickverf) != RPCX_NICKVERF || 217 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK || 218 ((char *)&ktick.kt) - ((char *)&ktick) != NFSX_UNSIGNED || 219 ((char *)ktick.kt.dat) - ((char *)&ktick) != 2 * NFSX_UNSIGNED) 220 fprintf(stderr, "Yikes! NFSKERB structs not packed!!\n"); 221 222 #endif 223 retrycnt = DEF_RETRY; 224 225 mntflags = 0; 226 altflags = 0; 227 nfsargs = nfsdefargs; 228 nfsargsp = &nfsargs; 229 while ((c = getopt(argc, argv, 230 "23a:bcCdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:UX")) != -1) 231 switch (c) { 232 case '3': 233 if (force2) 234 errx(1, "-2 and -3 are mutually exclusive"); 235 force3 = 1; 236 break; 237 case '2': 238 if (force3) 239 errx(1, "-2 and -3 are mutually exclusive"); 240 force2 = 1; 241 nfsargsp->flags &= ~NFSMNT_NFSV3; 242 break; 243 case 'a': 244 num = strtol(optarg, &p, 10); 245 if (*p || num < 0) 246 errx(1, "illegal -a value -- %s", optarg); 247 nfsargsp->readahead = num; 248 nfsargsp->flags |= NFSMNT_READAHEAD; 249 break; 250 case 'b': 251 opflags |= BGRND; 252 break; 253 case 'c': 254 nfsargsp->flags |= NFSMNT_NOCONN; 255 break; 256 case 'C': 257 nfsargsp->flags &= ~NFSMNT_NOCONN; 258 break; 259 case 'D': 260 num = strtol(optarg, &p, 10); 261 if (*p || num <= 0) 262 errx(1, "illegal -D value -- %s", optarg); 263 nfsargsp->deadthresh = num; 264 nfsargsp->flags |= NFSMNT_DEADTHRESH; 265 break; 266 case 'd': 267 nfsargsp->flags |= NFSMNT_DUMBTIMR; 268 break; 269 #if 0 /* XXXX */ 270 case 'g': 271 num = strtol(optarg, &p, 10); 272 if (*p || num <= 0) 273 errx(1, "illegal -g value -- %s", optarg); 274 set_rpc_maxgrouplist(num); 275 nfsargsp->maxgrouplist = num; 276 nfsargsp->flags |= NFSMNT_MAXGRPS; 277 break; 278 #endif 279 case 'I': 280 num = strtol(optarg, &p, 10); 281 if (*p || num <= 0) 282 errx(1, "illegal -I value -- %s", optarg); 283 nfsargsp->readdirsize = num; 284 nfsargsp->flags |= NFSMNT_READDIRSIZE; 285 break; 286 case 'i': 287 nfsargsp->flags |= NFSMNT_INT; 288 break; 289 #ifdef NFSKERB 290 case 'K': 291 nfsargsp->flags |= NFSMNT_KERB; 292 break; 293 #endif 294 case 'L': 295 num = strtol(optarg, &p, 10); 296 if (*p || num < 2) 297 errx(1, "illegal -L value -- %s", optarg); 298 nfsargsp->leaseterm = num; 299 nfsargsp->flags |= NFSMNT_LEASETERM; 300 break; 301 case 'l': 302 nfsargsp->flags |= NFSMNT_RDIRPLUS; 303 break; 304 #ifdef NFSKERB 305 case 'm': 306 (void)strncpy(realm, optarg, REALM_SZ - 1); 307 realm[REALM_SZ - 1] = '\0'; 308 break; 309 #endif 310 case 'o': 311 getmntopts(optarg, mopts, &mntflags, &altflags); 312 if(altflags & ALTF_BG) 313 opflags |= BGRND; 314 if(altflags & ALTF_CONN) 315 nfsargsp->flags &= ~NFSMNT_NOCONN; 316 if(altflags & ALTF_DUMBTIMR) 317 nfsargsp->flags |= NFSMNT_DUMBTIMR; 318 if(altflags & ALTF_INTR) 319 nfsargsp->flags |= NFSMNT_INT; 320 #ifdef NFSKERB 321 if(altflags & ALTF_KERB) 322 nfsargsp->flags |= NFSMNT_KERB; 323 #endif 324 if(altflags & ALTF_NFSV3) { 325 if (force2) 326 errx(1,"conflicting version options"); 327 force3 = 1; 328 } 329 if(altflags & ALTF_NFSV2) { 330 if (force3) 331 errx(1,"conflicting version options"); 332 force2 = 1; 333 nfsargsp->flags &= ~NFSMNT_NFSV3; 334 } 335 if(altflags & ALTF_RDIRPLUS) 336 nfsargsp->flags |= NFSMNT_RDIRPLUS; 337 if(altflags & ALTF_MNTUDP) 338 mnttcp_ok = 0; 339 if(altflags & ALTF_NORESPORT) 340 nfsargsp->flags &= ~NFSMNT_RESVPORT; 341 #ifdef ISO 342 if(altflags & ALTF_SEQPACKET) 343 nfsargsp->sotype = SOCK_SEQPACKET; 344 #endif 345 if(altflags & ALTF_NQNFS) { 346 if (force2) 347 errx(1,"nqnfs only available with v3"); 348 force3 = 1; 349 nfsargsp->flags |= NFSMNT_NQNFS; 350 } 351 if(altflags & ALTF_SOFT) 352 nfsargsp->flags |= NFSMNT_SOFT; 353 if(altflags & ALTF_TCP) { 354 nfsargsp->sotype = SOCK_STREAM; 355 nfsproto = IPPROTO_TCP; 356 } 357 altflags = 0; 358 break; 359 case 'P': 360 nfsargsp->flags |= NFSMNT_RESVPORT; 361 break; 362 case 'p': 363 nfsargsp->flags &= ~NFSMNT_RESVPORT; 364 break; 365 case 'q': 366 if (force2) 367 errx(1,"nqnfs only available with v3"); 368 force3 = 1; 369 nfsargsp->flags |= NFSMNT_NQNFS; 370 break; 371 case 'R': 372 num = strtol(optarg, &p, 10); 373 if (*p || num <= 0) 374 errx(1, "illegal -R value -- %s", optarg); 375 retrycnt = num; 376 break; 377 case 'r': 378 num = strtol(optarg, &p, 10); 379 if (*p || num <= 0) 380 errx(1, "illegal -r value -- %s", optarg); 381 nfsargsp->rsize = num; 382 nfsargsp->flags |= NFSMNT_RSIZE; 383 break; 384 #ifdef ISO 385 case 'S': 386 nfsargsp->sotype = SOCK_SEQPACKET; 387 break; 388 #endif 389 case 's': 390 nfsargsp->flags |= NFSMNT_SOFT; 391 break; 392 case 'T': 393 nfsargsp->sotype = SOCK_STREAM; 394 nfsproto = IPPROTO_TCP; 395 break; 396 case 't': 397 num = strtol(optarg, &p, 10); 398 if (*p || num <= 0) 399 errx(1, "illegal -t value -- %s", optarg); 400 nfsargsp->timeo = num; 401 nfsargsp->flags |= NFSMNT_TIMEO; 402 break; 403 case 'w': 404 num = strtol(optarg, &p, 10); 405 if (*p || num <= 0) 406 errx(1, "illegal -w value -- %s", optarg); 407 nfsargsp->wsize = num; 408 nfsargsp->flags |= NFSMNT_WSIZE; 409 break; 410 case 'x': 411 num = strtol(optarg, &p, 10); 412 if (*p || num <= 0) 413 errx(1, "illegal -x value -- %s", optarg); 414 nfsargsp->retrans = num; 415 nfsargsp->flags |= NFSMNT_RETRANS; 416 break; 417 case 'X': 418 nfsargsp->flags |= NFSMNT_XLATECOOKIE; 419 break; 420 case 'U': 421 mnttcp_ok = 0; 422 break; 423 default: 424 usage(); 425 break; 426 } 427 argc -= optind; 428 argv += optind; 429 430 if (argc != 2) 431 usage(); 432 433 spec = *argv++; 434 name = *argv; 435 436 if (!getnfsargs(spec, nfsargsp)) 437 exit(1); 438 if (mount(MOUNT_NFS, name, mntflags, nfsargsp)) 439 err(1, "%s", name); 440 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 441 if ((opflags & ISBGRND) == 0) { 442 if ((i = fork()) != 0) { 443 if (i == -1) 444 err(1, "nqnfs 1"); 445 exit(0); 446 } 447 (void) setsid(); 448 (void) close(STDIN_FILENO); 449 (void) close(STDOUT_FILENO); 450 (void) close(STDERR_FILENO); 451 (void) chdir("/"); 452 } 453 openlog("mount_nfs:", LOG_PID, LOG_DAEMON); 454 nfssvc_flag = NFSSVC_MNTD; 455 ncd.ncd_dirp = name; 456 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 457 if (errno != ENEEDAUTH) { 458 syslog(LOG_ERR, "nfssvc err %m"); 459 continue; 460 } 461 nfssvc_flag = 462 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 463 #ifdef NFSKERB 464 /* 465 * Set up as ncd_authuid for the kerberos call. 466 * Must set ruid to ncd_authuid and reset the 467 * ticket name iff ncd_authuid is not the same 468 * as last time, so that the right ticket file 469 * is found. 470 * Get the Kerberos credential structure so that 471 * we have the seesion key and get a ticket for 472 * this uid. 473 * For more info see the IETF Draft "Authentication 474 * in ONC RPC". 475 */ 476 if (ncd.ncd_authuid != last_ruid) { 477 krb_set_tkt_string(""); 478 last_ruid = ncd.ncd_authuid; 479 } 480 setreuid(ncd.ncd_authuid, 0); 481 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 482 if (kret == RET_NOTKT) { 483 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 484 DEFAULT_TKT_LIFE); 485 if (kret == KSUCCESS) 486 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 487 &kcr); 488 } 489 if (kret == KSUCCESS) 490 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 491 realm, 0); 492 493 /* 494 * Fill in the AKN_FULLNAME authenticator and verfier. 495 * Along with the Kerberos ticket, we need to build 496 * the timestamp verifier and encrypt it in CBC mode. 497 */ 498 if (kret == KSUCCESS && 499 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 500 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 501 ncd.ncd_authtype = RPCAUTH_KERB4; 502 ncd.ncd_authstr = (u_char *)&ktick; 503 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 504 3 * NFSX_UNSIGNED; 505 ncd.ncd_verfstr = (u_char *)&kverf; 506 ncd.ncd_verflen = sizeof (kverf); 507 memmove(ncd.ncd_key, kcr.session, 508 sizeof (kcr.session)); 509 kin.t1 = htonl(ktv.tv_sec); 510 kin.t2 = htonl(ktv.tv_usec); 511 kin.w1 = htonl(NFS_KERBTTL); 512 kin.w2 = htonl(NFS_KERBTTL - 1); 513 memset((caddr_t)kivec, 0, sizeof (kivec)); 514 515 /* 516 * Encrypt kin in CBC mode using the session 517 * key in kcr. 518 */ 519 XXX 520 521 /* 522 * Finally, fill the timestamp verifier into the 523 * authenticator and verifier. 524 */ 525 ktick.kind = htonl(RPCAKN_FULLNAME); 526 kverf.kind = htonl(RPCAKN_FULLNAME); 527 NFS_KERBW1(ktick.kt) = kout.w1; 528 ktick.kt.length = htonl(ktick.kt.length); 529 kverf.verf.t1 = kout.t1; 530 kverf.verf.t2 = kout.t2; 531 kverf.verf.w2 = kout.w2; 532 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 533 } 534 setreuid(0, 0); 535 #endif /* NFSKERB */ 536 } 537 } 538 exit(0); 539 } 540 541 int 542 getnfsargs(spec, nfsargsp) 543 char *spec; 544 struct nfs_args *nfsargsp; 545 { 546 CLIENT *clp; 547 struct hostent *hp; 548 static struct sockaddr_in saddr; 549 #ifdef ISO 550 static struct sockaddr_iso isoaddr; 551 struct iso_addr *isop; 552 int isoflag = 0; 553 #endif 554 struct timeval pertry, try; 555 enum clnt_stat clnt_stat; 556 int so = RPC_ANYSOCK, i, nfsvers, mntvers, orgcnt; 557 char *hostp, *delimp; 558 #ifdef NFSKERB 559 char *cp; 560 #endif 561 u_short tport = 0; 562 static struct nfhret nfhret; 563 static char nam[MNAMELEN + 1]; 564 565 strncpy(nam, spec, MNAMELEN); 566 nam[MNAMELEN] = '\0'; 567 if ((delimp = strchr(spec, '@')) != NULL) { 568 hostp = delimp + 1; 569 } else if ((delimp = strchr(spec, ':')) != NULL) { 570 hostp = spec; 571 spec = delimp + 1; 572 } else { 573 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 574 return (0); 575 } 576 *delimp = '\0'; 577 /* 578 * DUMB!! Until the mount protocol works on iso transport, we must 579 * supply both an iso and an inet address for the host. 580 */ 581 #ifdef ISO 582 if (!strncmp(hostp, "iso=", 4)) { 583 u_short isoport; 584 585 hostp += 4; 586 isoflag++; 587 if ((delimp = strchr(hostp, '+')) == NULL) { 588 warnx("no iso+inet address"); 589 return (0); 590 } 591 *delimp = '\0'; 592 if ((isop = iso_addr(hostp)) == NULL) { 593 warnx("bad ISO address"); 594 return (0); 595 } 596 memset(&isoaddr, 0, sizeof (isoaddr)); 597 memcpy(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 598 isoaddr.siso_len = sizeof (isoaddr); 599 isoaddr.siso_family = AF_ISO; 600 isoaddr.siso_tlen = 2; 601 isoport = htons(NFS_PORT); 602 memcpy(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 603 hostp = delimp + 1; 604 } 605 #endif /* ISO */ 606 607 /* 608 * Handle an internet host address and reverse resolve it if 609 * doing Kerberos. 610 */ 611 if (inet_aton(hostp, &saddr.sin_addr) != 0) { 612 if ((nfsargsp->flags & NFSMNT_KERB)) { 613 if ((hp = gethostbyaddr((char *)&saddr.sin_addr.s_addr, 614 sizeof (u_long), AF_INET)) == (struct hostent *)0) { 615 warnx("can't reverse resolve net address"); 616 return (0); 617 } 618 } 619 } else { 620 hp = gethostbyname(hostp); 621 if (hp == NULL) { 622 warnx("can't get net id for host"); 623 return (0); 624 } 625 memcpy(&saddr.sin_addr, hp->h_addr, hp->h_length); 626 } 627 #ifdef NFSKERB 628 if (nfsargsp->flags & NFSMNT_KERB) { 629 strncpy(inst, hp->h_name, INST_SZ); 630 inst[INST_SZ - 1] = '\0'; 631 if (cp = strchr(inst, '.')) 632 *cp = '\0'; 633 } 634 #endif /* NFSKERB */ 635 636 if (force2) { 637 nfsvers = NFS_VER2; 638 mntvers = RPCMNT_VER1; 639 } else { 640 nfsvers = NFS_VER3; 641 mntvers = RPCMNT_VER3; 642 } 643 orgcnt = retrycnt; 644 tryagain: 645 nfhret.stat = EACCES; /* Mark not yet successful */ 646 while (retrycnt > 0) { 647 saddr.sin_family = AF_INET; 648 saddr.sin_port = htons(PMAPPORT); 649 if ((tport = pmap_getport(&saddr, RPCPROG_NFS, 650 nfsvers, nfsargsp->sotype == SOCK_STREAM ? IPPROTO_TCP : 651 IPPROTO_UDP)) == 0) { 652 if ((opflags & ISBGRND) == 0) 653 clnt_pcreateerror("NFS Portmap"); 654 } else { 655 saddr.sin_port = 0; 656 pertry.tv_sec = 10; 657 pertry.tv_usec = 0; 658 if (mnttcp_ok && nfsargsp->sotype == SOCK_STREAM) 659 clp = clnttcp_create(&saddr, RPCPROG_MNT, mntvers, 660 &so, 0, 0); 661 else 662 clp = clntudp_create(&saddr, RPCPROG_MNT, mntvers, 663 pertry, &so); 664 if (clp == NULL) { 665 if ((opflags & ISBGRND) == 0) 666 clnt_pcreateerror("Cannot MNT RPC"); 667 } else { 668 clp->cl_auth = authunix_create_default(); 669 try.tv_sec = 10; 670 try.tv_usec = 0; 671 if (nfsargsp->flags & NFSMNT_KERB) 672 nfhret.auth = RPCAUTH_KERB4; 673 else 674 nfhret.auth = RPCAUTH_UNIX; 675 nfhret.vers = mntvers; 676 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 677 xdr_dir, spec, xdr_fh, &nfhret, try); 678 switch (clnt_stat) { 679 case RPC_PROGVERSMISMATCH: 680 if (nfsvers == NFS_VER3 && !force3) { 681 retrycnt = orgcnt; 682 nfsvers = NFS_VER2; 683 mntvers = RPCMNT_VER1; 684 nfsargsp->flags &= 685 ~NFSMNT_NFSV3; 686 goto tryagain; 687 } else { 688 errx(1, "%s", clnt_sperror(clp, 689 "MNT RPC")); 690 } 691 case RPC_SUCCESS: 692 auth_destroy(clp->cl_auth); 693 clnt_destroy(clp); 694 retrycnt = 0; 695 break; 696 default: 697 /* XXX should give up on some errors */ 698 if ((opflags & ISBGRND) == 0) 699 warnx("%s", clnt_sperror(clp, 700 "bad MNT RPC")); 701 break; 702 } 703 } 704 } 705 if (--retrycnt > 0) { 706 if (opflags & BGRND) { 707 opflags &= ~BGRND; 708 if ((i = fork()) != 0) { 709 if (i == -1) 710 err(1, "nqnfs 2"); 711 exit(0); 712 } 713 (void) setsid(); 714 (void) close(STDIN_FILENO); 715 (void) close(STDOUT_FILENO); 716 (void) close(STDERR_FILENO); 717 (void) chdir("/"); 718 opflags |= ISBGRND; 719 } 720 sleep(60); 721 } 722 } 723 if (nfhret.stat) { 724 if (opflags & ISBGRND) 725 exit(1); 726 errno = nfhret.stat; 727 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 728 return (0); 729 } 730 saddr.sin_port = htons(tport); 731 #ifdef ISO 732 if (isoflag) { 733 nfsargsp->addr = (struct sockaddr *) &isoaddr; 734 nfsargsp->addrlen = sizeof (isoaddr); 735 } else 736 #endif /* ISO */ 737 { 738 nfsargsp->addr = (struct sockaddr *) &saddr; 739 nfsargsp->addrlen = sizeof (saddr); 740 } 741 nfsargsp->fh = nfhret.nfh; 742 nfsargsp->fhsize = nfhret.fhsize; 743 nfsargsp->hostname = nam; 744 return (1); 745 } 746 747 /* 748 * xdr routines for mount rpc's 749 */ 750 int 751 xdr_dir(xdrsp, dirp) 752 XDR *xdrsp; 753 char *dirp; 754 { 755 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 756 } 757 758 int 759 xdr_fh(xdrsp, np) 760 XDR *xdrsp; 761 struct nfhret *np; 762 { 763 int i; 764 long auth, authcnt, authfnd = 0; 765 766 if (!xdr_u_long(xdrsp, &np->stat)) 767 return (0); 768 if (np->stat) 769 return (1); 770 switch (np->vers) { 771 case 1: 772 np->fhsize = NFSX_V2FH; 773 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 774 case 3: 775 if (!xdr_long(xdrsp, &np->fhsize)) 776 return (0); 777 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 778 return (0); 779 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 780 return (0); 781 if (!xdr_long(xdrsp, &authcnt)) 782 return (0); 783 for (i = 0; i < authcnt; i++) { 784 if (!xdr_long(xdrsp, &auth)) 785 return (0); 786 if (auth == np->auth) 787 authfnd++; 788 } 789 /* 790 * Some servers, such as DEC's OSF/1 return a nil authenticator 791 * list to indicate RPCAUTH_UNIX. 792 */ 793 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 794 np->stat = EAUTH; 795 return (1); 796 }; 797 return (0); 798 } 799 800 void 801 usage() 802 { 803 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n", 804 "[-23bcCdiKklMPqsT] [-a maxreadahead] [-D deadthresh]", 805 "\t[-g maxgroups] [-L leaseterm] [-m realm] [-o options] [-R retrycnt]", 806 "\t[-r readsize] [-t timeout] [-w writesize] [-x retrans]", 807 "\trhost:path node"); 808 exit(1); 809 } 810
Indexes created Tue Sep 30 10:09:55 GMT 2025