mount_nfs.c revision 1.12
1 /* $NetBSD: mount_nfs.c,v 1.12 1996/04/13 01:31:43 jtc 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 1.12 1996/04/13 01:31:43 jtc 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 108 109 const struct mntopt mopts[] = { 110 MOPT_STDOPTS, 111 MOPT_FORCE, 112 MOPT_UPDATE, 113 { "bg", 0, ALTF_BG, 1 }, 114 { "conn", 1, ALTF_NOCONN, 1 }, 115 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 116 { "intr", 0, ALTF_INTR, 1 }, 117 #ifdef NFSKERB 118 { "kerb", 0, ALTF_KERB, 1 }, 119 #endif 120 { "nfsv3", 0, ALTF_NFSV3, 1 }, 121 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 122 { "mntudp", 0, ALTF_MNTUDP, 1 }, 123 { "resvport", 0, ALTF_RESVPORT, 1 }, 124 #ifdef ISO 125 { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 126 #endif 127 { "nqnfs", 0, ALTF_NQNFS, 1 }, 128 { "soft", 0, ALTF_SOFT, 1 }, 129 { "tcp", 0, ALTF_TCP, 1 }, 130 { NULL } 131 }; 132 133 struct nfs_args nfsdefargs = { 134 NFS_ARGSVERSION, 135 (struct sockaddr *)0, 136 sizeof (struct sockaddr_in), 137 SOCK_DGRAM, 138 0, 139 (u_char *)0, 140 0, 141 NFSMNT_NFSV3, 142 NFS_WSIZE, 143 NFS_RSIZE, 144 NFS_READDIRSIZE, 145 10, 146 NFS_RETRANS, 147 NFS_MAXGRPS, 148 NFS_DEFRAHEAD, 149 NQ_DEFLEASE, 150 NQ_DEADTHRESH, 151 (char *)0, 152 }; 153 154 struct nfhret { 155 u_long stat; 156 long vers; 157 long auth; 158 long fhsize; 159 u_char nfh[NFSX_V3FHMAX]; 160 }; 161 #define DEF_RETRY 10000 162 #define BGRND 1 163 #define ISBGRND 2 164 int retrycnt; 165 int opflags = 0; 166 int nfsproto = IPPROTO_UDP; 167 int mnttcp_ok = 1; 168 int force2 = 0; 169 int force3 = 0; 170 171 #ifdef NFSKERB 172 char inst[INST_SZ]; 173 char realm[REALM_SZ]; 174 struct { 175 u_long kind; 176 KTEXT_ST kt; 177 } ktick; 178 struct nfsrpc_nickverf kverf; 179 struct nfsrpc_fullblock kin, kout; 180 NFSKERBKEY_T kivec; 181 CREDENTIALS kcr; 182 struct timeval ktv; 183 NFSKERBKEYSCHED_T kerb_keysched; 184 #endif 185 186 int getnfsargs __P((char *, struct nfs_args *)); 187 #ifdef ISO 188 struct iso_addr *iso_addr __P((const char *)); 189 #endif 190 void set_rpc_maxgrouplist __P((int)); 191 __dead void usage __P((void)); 192 int xdr_dir __P((XDR *, char *)); 193 int xdr_fh __P((XDR *, struct nfhret *)); 194 195 int 196 main(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 int error = 0; 207 #ifdef NFSKERB 208 uid_t last_ruid; 209 210 last_ruid = -1; 211 if (krb_get_lrealm(realm, 0) != KSUCCESS) 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"); 218 219 #endif 220 retrycnt = DEF_RETRY; 221 222 mntflags = 0; 223 altflags = 0; 224 nfsargs = nfsdefargs; 225 nfsargsp = &nfsargs; 226 while ((c = getopt(argc, argv, 227 "23a:bcdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:U")) != EOF) 228 switch (c) { 229 case '3': 230 if (force2) 231 errx(1, "-2 and -3 are mutually exclusive"); 232 force3 = 1; 233 break; 234 case '2': 235 if (force3) 236 errx(1, "-2 and -3 are mutually exclusive"); 237 force2 = 1; 238 nfsargsp->flags &= ~NFSMNT_NFSV3; 239 break; 240 case 'a': 241 num = strtol(optarg, &p, 10); 242 if (*p || num < 0) 243 errx(1, "illegal -a value -- %s", optarg); 244 nfsargsp->readahead = num; 245 nfsargsp->flags |= NFSMNT_READAHEAD; 246 break; 247 case 'b': 248 opflags |= BGRND; 249 break; 250 case 'c': 251 nfsargsp->flags |= NFSMNT_NOCONN; 252 break; 253 case 'D': 254 num = strtol(optarg, &p, 10); 255 if (*p || num <= 0) 256 errx(1, "illegal -D value -- %s", optarg); 257 nfsargsp->deadthresh = num; 258 nfsargsp->flags |= NFSMNT_DEADTHRESH; 259 break; 260 case 'd': 261 nfsargsp->flags |= NFSMNT_DUMBTIMR; 262 break; 263 #if 0 /* XXXX */ 264 case 'g': 265 num = strtol(optarg, &p, 10); 266 if (*p || num <= 0) 267 errx(1, "illegal -g value -- %s", optarg); 268 set_rpc_maxgrouplist(num); 269 nfsargsp->maxgrouplist = num; 270 nfsargsp->flags |= NFSMNT_MAXGRPS; 271 break; 272 #endif 273 case 'I': 274 num = strtol(optarg, &p, 10); 275 if (*p || num <= 0) 276 errx(1, "illegal -I value -- %s", optarg); 277 nfsargsp->readdirsize = num; 278 nfsargsp->flags |= NFSMNT_READDIRSIZE; 279 break; 280 case 'i': 281 nfsargsp->flags |= NFSMNT_INT; 282 break; 283 #ifdef NFSKERB 284 case 'K': 285 nfsargsp->flags |= NFSMNT_KERB; 286 break; 287 #endif 288 case 'L': 289 num = strtol(optarg, &p, 10); 290 if (*p || num < 2) 291 errx(1, "illegal -L value -- %s", optarg); 292 nfsargsp->leaseterm = num; 293 nfsargsp->flags |= NFSMNT_LEASETERM; 294 break; 295 case 'l': 296 nfsargsp->flags |= NFSMNT_RDIRPLUS; 297 break; 298 #ifdef NFSKERB 299 case 'm': 300 (void)strncpy(realm, optarg, REALM_SZ - 1); 301 realm[REALM_SZ - 1] = '\0'; 302 break; 303 #endif 304 case 'o': 305 getmntopts(optarg, mopts, &mntflags, &altflags); 306 if(altflags & ALTF_BG) 307 opflags |= BGRND; 308 if(altflags & ALTF_NOCONN) 309 nfsargsp->flags |= NFSMNT_NOCONN; 310 if(altflags & ALTF_DUMBTIMR) 311 nfsargsp->flags |= NFSMNT_DUMBTIMR; 312 if(altflags & ALTF_INTR) 313 nfsargsp->flags |= NFSMNT_INT; 314 #ifdef NFSKERB 315 if(altflags & ALTF_KERB) 316 nfsargsp->flags |= NFSMNT_KERB; 317 #endif 318 if(altflags & ALTF_NFSV3) 319 nfsargsp->flags |= NFSMNT_NFSV3; 320 if(altflags & ALTF_RDIRPLUS) 321 nfsargsp->flags |= NFSMNT_RDIRPLUS; 322 if(altflags & ALTF_MNTUDP) 323 mnttcp_ok = 0; 324 if(altflags & ALTF_RESVPORT) 325 nfsargsp->flags |= NFSMNT_RESVPORT; 326 #ifdef ISO 327 if(altflags & ALTF_SEQPACKET) 328 nfsargsp->sotype = SOCK_SEQPACKET; 329 #endif 330 if(altflags & ALTF_NQNFS) 331 nfsargsp->flags |= (NFSMNT_NQNFS|NFSMNT_NFSV3); 332 if(altflags & ALTF_SOFT) 333 nfsargsp->flags |= NFSMNT_SOFT; 334 if(altflags & ALTF_TCP) { 335 nfsargsp->sotype = SOCK_STREAM; 336 nfsproto = IPPROTO_TCP; 337 } 338 altflags = 0; 339 break; 340 case 'P': 341 nfsargsp->flags |= NFSMNT_RESVPORT; 342 break; 343 #ifdef ISO 344 case 'p': 345 nfsargsp->sotype = SOCK_SEQPACKET; 346 break; 347 #endif 348 case 'q': 349 nfsargsp->flags |= (NFSMNT_NQNFS | NFSMNT_NFSV3); 350 break; 351 case 'R': 352 num = strtol(optarg, &p, 10); 353 if (*p || num <= 0) 354 errx(1, "illegal -R value -- %s", optarg); 355 retrycnt = num; 356 break; 357 case 'r': 358 num = strtol(optarg, &p, 10); 359 if (*p || num <= 0) 360 errx(1, "illegal -r value -- %s", optarg); 361 nfsargsp->rsize = num; 362 nfsargsp->flags |= NFSMNT_RSIZE; 363 break; 364 case 's': 365 nfsargsp->flags |= NFSMNT_SOFT; 366 break; 367 case 'T': 368 nfsargsp->sotype = SOCK_STREAM; 369 nfsproto = IPPROTO_TCP; 370 break; 371 case 't': 372 num = strtol(optarg, &p, 10); 373 if (*p || num <= 0) 374 errx(1, "illegal -t value -- %s", optarg); 375 nfsargsp->timeo = num; 376 nfsargsp->flags |= NFSMNT_TIMEO; 377 break; 378 case 'w': 379 num = strtol(optarg, &p, 10); 380 if (*p || num <= 0) 381 errx(1, "illegal -w value -- %s", optarg); 382 nfsargsp->wsize = num; 383 nfsargsp->flags |= NFSMNT_WSIZE; 384 break; 385 case 'x': 386 num = strtol(optarg, &p, 10); 387 if (*p || num <= 0) 388 errx(1, "illegal -x value -- %s", optarg); 389 nfsargsp->retrans = num; 390 nfsargsp->flags |= NFSMNT_RETRANS; 391 break; 392 case 'U': 393 mnttcp_ok = 0; 394 break; 395 default: 396 usage(); 397 break; 398 } 399 argc -= optind; 400 argv += optind; 401 402 if (argc != 2) 403 usage(); 404 405 spec = *argv++; 406 name = *argv; 407 408 if (!getnfsargs(spec, nfsargsp)) 409 exit(1); 410 if (mount(MOUNT_NFS, name, mntflags, nfsargsp)) 411 err(1, "%s", name); 412 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 413 if ((opflags & ISBGRND) == 0) { 414 if (i = fork()) { 415 if (i == -1) 416 err(1, "nqnfs 1"); 417 exit(0); 418 } 419 (void) setsid(); 420 (void) close(STDIN_FILENO); 421 (void) close(STDOUT_FILENO); 422 (void) close(STDERR_FILENO); 423 (void) chdir("/"); 424 } 425 openlog("mount_nfs:", LOG_PID, LOG_DAEMON); 426 nfssvc_flag = NFSSVC_MNTD; 427 ncd.ncd_dirp = name; 428 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 429 if (errno != ENEEDAUTH) { 430 syslog(LOG_ERR, "nfssvc err %m"); 431 continue; 432 } 433 nfssvc_flag = 434 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 435 #ifdef NFSKERB 436 /* 437 * Set up as ncd_authuid for the kerberos call. 438 * Must set ruid to ncd_authuid and reset the 439 * ticket name iff ncd_authuid is not the same 440 * as last time, so that the right ticket file 441 * is found. 442 * Get the Kerberos credential structure so that 443 * we have the seesion key and get a ticket for 444 * this uid. 445 * For more info see the IETF Draft "Authentication 446 * in ONC RPC". 447 */ 448 if (ncd.ncd_authuid != last_ruid) { 449 krb_set_tkt_string(""); 450 last_ruid = ncd.ncd_authuid; 451 } 452 setreuid(ncd.ncd_authuid, 0); 453 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 454 if (kret == RET_NOTKT) { 455 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 456 DEFAULT_TKT_LIFE); 457 if (kret == KSUCCESS) 458 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 459 &kcr); 460 } 461 if (kret == KSUCCESS) 462 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 463 realm, 0); 464 465 /* 466 * Fill in the AKN_FULLNAME authenticator and verfier. 467 * Along with the Kerberos ticket, we need to build 468 * the timestamp verifier and encrypt it in CBC mode. 469 */ 470 if (kret == KSUCCESS && 471 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 472 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 473 ncd.ncd_authtype = RPCAUTH_KERB4; 474 ncd.ncd_authstr = (u_char *)&ktick; 475 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 476 3 * NFSX_UNSIGNED; 477 ncd.ncd_verfstr = (u_char *)&kverf; 478 ncd.ncd_verflen = sizeof (kverf); 479 memmove(ncd.ncd_key, kcr.session, 480 sizeof (kcr.session)); 481 kin.t1 = htonl(ktv.tv_sec); 482 kin.t2 = htonl(ktv.tv_usec); 483 kin.w1 = htonl(NFS_KERBTTL); 484 kin.w2 = htonl(NFS_KERBTTL - 1); 485 bzero((caddr_t)kivec, sizeof (kivec)); 486 487 /* 488 * Encrypt kin in CBC mode using the session 489 * key in kcr. 490 */ 491 XXX 492 493 /* 494 * Finally, fill the timestamp verifier into the 495 * authenticator and verifier. 496 */ 497 ktick.kind = htonl(RPCAKN_FULLNAME); 498 kverf.kind = htonl(RPCAKN_FULLNAME); 499 NFS_KERBW1(ktick.kt) = kout.w1; 500 ktick.kt.length = htonl(ktick.kt.length); 501 kverf.verf.t1 = kout.t1; 502 kverf.verf.t2 = kout.t2; 503 kverf.verf.w2 = kout.w2; 504 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 505 } 506 setreuid(0, 0); 507 #endif /* NFSKERB */ 508 } 509 } 510 exit(0); 511 } 512 513 int 514 getnfsargs(spec, nfsargsp) 515 char *spec; 516 struct nfs_args *nfsargsp; 517 { 518 register CLIENT *clp; 519 struct hostent *hp; 520 static struct sockaddr_in saddr; 521 #ifdef ISO 522 static struct sockaddr_iso isoaddr; 523 struct iso_addr *isop; 524 int isoflag = 0; 525 #endif 526 struct timeval pertry, try; 527 enum clnt_stat clnt_stat; 528 int so = RPC_ANYSOCK, i, nfsvers, mntvers, orgcnt; 529 char *hostp, *delimp; 530 #ifdef NFSKERB 531 char *cp; 532 #endif 533 u_short tport; 534 static struct nfhret nfhret; 535 static char nam[MNAMELEN + 1]; 536 537 strncpy(nam, spec, MNAMELEN); 538 nam[MNAMELEN] = '\0'; 539 if ((delimp = strchr(spec, '@')) != NULL) { 540 hostp = delimp + 1; 541 } else if ((delimp = strchr(spec, ':')) != NULL) { 542 hostp = spec; 543 spec = delimp + 1; 544 } else { 545 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 546 return (0); 547 } 548 *delimp = '\0'; 549 /* 550 * DUMB!! Until the mount protocol works on iso transport, we must 551 * supply both an iso and an inet address for the host. 552 */ 553 #ifdef ISO 554 if (!strncmp(hostp, "iso=", 4)) { 555 u_short isoport; 556 557 hostp += 4; 558 isoflag++; 559 if ((delimp = strchr(hostp, '+')) == NULL) { 560 warnx("no iso+inet address"); 561 return (0); 562 } 563 *delimp = '\0'; 564 if ((isop = iso_addr(hostp)) == NULL) { 565 warnx("bad ISO address"); 566 return (0); 567 } 568 memset(&isoaddr, 0, sizeof (isoaddr)); 569 memcpy(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 570 isoaddr.siso_len = sizeof (isoaddr); 571 isoaddr.siso_family = AF_ISO; 572 isoaddr.siso_tlen = 2; 573 isoport = htons(NFS_PORT); 574 memcpy(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 575 hostp = delimp + 1; 576 } 577 #endif /* ISO */ 578 579 /* 580 * Handle an internet host address and reverse resolve it if 581 * doing Kerberos. 582 */ 583 if (inet_aton(hostp, &saddr.sin_addr) != 0) { 584 if ((nfsargsp->flags & NFSMNT_KERB)) { 585 if ((hp = gethostbyaddr((char *)&saddr.sin_addr.s_addr, 586 sizeof (u_long), AF_INET)) == (struct hostent *)0) { 587 warnx("can't reverse resolve net address"); 588 return (0); 589 } 590 } 591 } else { 592 hp = gethostbyname(hostp); 593 if (hp == NULL) { 594 warnx("can't get net id for host"); 595 return (0); 596 } 597 memcpy(&saddr.sin_addr, hp->h_addr, hp->h_length); 598 } 599 #ifdef NFSKERB 600 if (nfsargsp->flags & NFSMNT_KERB) { 601 strncpy(inst, hp->h_name, INST_SZ); 602 inst[INST_SZ - 1] = '\0'; 603 if (cp = strchr(inst, '.')) 604 *cp = '\0'; 605 } 606 #endif /* NFSKERB */ 607 608 if (force2) { 609 nfsvers = NFS_VER2; 610 mntvers = RPCMNT_VER1; 611 } else { 612 nfsvers = NFS_VER3; 613 mntvers = RPCMNT_VER3; 614 } 615 orgcnt = retrycnt; 616 tryagain: 617 nfhret.stat = EACCES; /* Mark not yet successful */ 618 while (retrycnt > 0) { 619 saddr.sin_family = AF_INET; 620 saddr.sin_port = htons(PMAPPORT); 621 if ((tport = pmap_getport(&saddr, RPCPROG_NFS, 622 nfsvers, nfsargsp->sotype == SOCK_STREAM ? IPPROTO_TCP : 623 IPPROTO_UDP)) == 0) { 624 if ((opflags & ISBGRND) == 0) 625 clnt_pcreateerror("NFS Portmap"); 626 } else { 627 saddr.sin_port = 0; 628 pertry.tv_sec = 10; 629 pertry.tv_usec = 0; 630 if (mnttcp_ok && nfsargsp->sotype == SOCK_STREAM) 631 clp = clnttcp_create(&saddr, RPCPROG_MNT, mntvers, 632 &so, 0, 0); 633 else 634 clp = clntudp_create(&saddr, RPCPROG_MNT, mntvers, 635 pertry, &so); 636 if (clp == NULL) { 637 if ((opflags & ISBGRND) == 0) 638 clnt_pcreateerror("Cannot MNT PRC"); 639 } else { 640 clp->cl_auth = authunix_create_default(); 641 try.tv_sec = 10; 642 try.tv_usec = 0; 643 if (nfsargsp->flags & NFSMNT_KERB) 644 nfhret.auth = RPCAUTH_KERB4; 645 else 646 nfhret.auth = RPCAUTH_UNIX; 647 nfhret.vers = mntvers; 648 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 649 xdr_dir, spec, xdr_fh, &nfhret, try); 650 if (clnt_stat != RPC_SUCCESS) { 651 if (clnt_stat == RPC_PROGVERSMISMATCH) { 652 if (nfsvers == NFS_VER3 && 653 !force3) { 654 retrycnt = orgcnt; 655 nfsvers = NFS_VER2; 656 mntvers = RPCMNT_VER1; 657 nfsargsp->flags &= 658 ~NFSMNT_NFSV3; 659 goto tryagain; 660 } else { 661 errx(1, "%s", 662 clnt_sperror(clp, 663 "MNT RPC")); 664 } 665 } 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 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 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 * Some servers, such as DEC's OSF/1 return a nil authenticator 762 * list to indicate RPCAUTH_UNIX. 763 */ 764 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 765 np->stat = EAUTH; 766 return (1); 767 }; 768 return (0); 769 } 770 771 __dead void 772 usage() 773 { 774 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n", 775 "[-bcdiKklMPqsT] [-a maxreadahead] [-D deadthresh]", 776 "\t[-g maxgroups] [-L leaseterm] [-m realm] [-o options] [-R retrycnt]", 777 "\t[-r readsize] [-t timeout] [-w writesize] [-x retrans]", 778 "\trhost:path node"); 779 exit(1); 780 } 781
Indexes created Tue Sep 30 11:09:46 GMT 2025