mount_nfs.c revision 1.45
1 /* $NetBSD: mount_nfs.c,v 1.45 2003/08/07 10:04:29 agc 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 __COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\n\ 38 The Regents of the University of California. All rights reserved.\n"); 39 #endif /* not lint */ 40 41 #ifndef lint 42 #if 0 43 static char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95"; 44 #else 45 __RCSID("$NetBSD: mount_nfs.c,v 1.45 2003/08/07 10:04:29 agc Exp $"); 46 #endif 47 #endif /* not lint */ 48 49 #include <sys/param.h> 50 #include <sys/mount.h> 51 #include <sys/socket.h> 52 #include <sys/stat.h> 53 #include <syslog.h> 54 55 #include <rpc/rpc.h> 56 #include <rpc/pmap_clnt.h> 57 #include <rpc/pmap_prot.h> 58 59 #ifdef ISO 60 #include <netiso/iso.h> 61 #endif 62 63 #ifdef NFSKERB 64 #include <des.h> 65 #include <kerberosIV/krb.h> 66 #endif 67 68 #include <nfs/rpcv2.h> 69 #include <nfs/nfsproto.h> 70 #include <nfs/nfs.h> 71 #include <nfs/nqnfs.h> 72 #include <nfs/nfsmount.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 <string.h> 85 #include <unistd.h> 86 #include <util.h> 87 88 #include <mntopts.h> 89 90 #define ALTF_BG 0x00000001 91 #define ALTF_CONN 0x00000002 92 #define ALTF_DUMBTIMR 0x00000004 93 #define ALTF_INTR 0x00000008 94 #define ALTF_KERB 0x00000010 95 #define ALTF_NFSV3 0x00000020 96 #define ALTF_RDIRPLUS 0x00000040 97 #define ALTF_MNTUDP 0x00000080 98 #define ALTF_NORESPORT 0x00000100 99 #define ALTF_SEQPACKET 0x00000200 100 #define ALTF_NQNFS 0x00000400 101 #define ALTF_SOFT 0x00000800 102 #define ALTF_TCP 0x00001000 103 #define ALTF_NFSV2 0x00002000 104 #define ALTF_PORT 0x00004000 105 #define ALTF_RSIZE 0x00008000 106 #define ALTF_WSIZE 0x00010000 107 #define ALTF_RDIRSIZE 0x00020000 108 #define ALTF_MAXGRPS 0x00040000 109 #define ALTF_LEASETERM 0x00080000 110 #define ALTF_READAHEAD 0x00100000 111 #define ALTF_DEADTHRESH 0x00200000 112 #define ALTF_TIMEO 0x00400000 113 #define ALTF_RETRANS 0x00800000 114 115 static const struct mntopt mopts[] = { 116 MOPT_STDOPTS, 117 MOPT_FORCE, 118 MOPT_UPDATE, 119 MOPT_GETARGS, 120 { "bg", 0, ALTF_BG, 1 }, 121 { "conn", 0, ALTF_CONN, 1 }, 122 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 123 { "intr", 0, ALTF_INTR, 1 }, 124 #ifdef NFSKERB 125 { "kerb", 0, ALTF_KERB, 1 }, 126 #endif 127 { "nfsv3", 0, ALTF_NFSV3, 1 }, 128 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 129 { "mntudp", 0, ALTF_MNTUDP, 1 }, 130 { "noresport", 0, ALTF_NORESPORT, 1 }, 131 #ifdef ISO 132 { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 133 #endif 134 { "nqnfs", 0, ALTF_NQNFS, 1 }, 135 { "soft", 0, ALTF_SOFT, 1 }, 136 { "tcp", 0, ALTF_TCP, 1 }, 137 { "nfsv2", 0, ALTF_NFSV2, 1 }, 138 { "port", 0, ALTF_PORT, 1 }, 139 { "rsize", 0, ALTF_RSIZE, 1 }, 140 { "wsize", 0, ALTF_WSIZE, 1 }, 141 { "rdirsize", 0, ALTF_RDIRSIZE, 1 }, 142 { "maxgrps", 0, ALTF_MAXGRPS, 1 }, 143 { "leaseterm", 0, ALTF_LEASETERM, 1 }, 144 { "readahead", 0, ALTF_READAHEAD, 1 }, 145 { "deadthresh", 0, ALTF_DEADTHRESH, 1 }, 146 { "timeo", 0, ALTF_TIMEO, 1 }, 147 { NULL } 148 149 }; 150 151 struct nfs_args nfsdefargs = { 152 NFS_ARGSVERSION, 153 (struct sockaddr *)0, 154 sizeof (struct sockaddr_in), 155 SOCK_DGRAM, 156 0, 157 (u_char *)0, 158 0, 159 NFSMNT_NFSV3|NFSMNT_NOCONN|NFSMNT_RESVPORT, 160 NFS_WSIZE, 161 NFS_RSIZE, 162 NFS_READDIRSIZE, 163 10, 164 NFS_RETRANS, 165 NFS_MAXGRPS, 166 NFS_DEFRAHEAD, 167 NQ_DEFLEASE, 168 NQ_DEADTHRESH, 169 (char *)0, 170 }; 171 172 struct nfhret { 173 u_long stat; 174 long vers; 175 long auth; 176 long fhsize; 177 u_char nfh[NFSX_V3FHMAX]; 178 }; 179 #define DEF_RETRY 10000 180 #define BGRND 1 181 #define ISBGRND 2 182 int retrycnt; 183 int opflags = 0; 184 int nfsproto = IPPROTO_UDP; 185 int force2 = 0; 186 int force3 = 0; 187 int mnttcp_ok = 1; 188 int port = 0; 189 190 #ifdef NFSKERB 191 static char inst[INST_SZ]; 192 static char realm[REALM_SZ]; 193 static struct { 194 u_long kind; 195 KTEXT_ST kt; 196 } ktick; 197 static struct nfsrpc_nickverf kverf; 198 static struct nfsrpc_fullblock kin, kout; 199 static NFSKERBKEY_T kivec; 200 static CREDENTIALS kcr; 201 static struct timeval ktv; 202 static NFSKERBKEYSCHED_T kerb_keysched; 203 #endif 204 205 static void shownfsargs __P((const struct nfs_args *)); 206 static int getnfsargs __P((char *, struct nfs_args *)); 207 #ifdef ISO 208 static struct iso_addr *iso_addr __P((const char *)); 209 #endif 210 int main __P((int, char *[])); 211 int mount_nfs __P((int argc, char **argv)); 212 /* void set_rpc_maxgrouplist __P((int)); */ 213 static void usage __P((void)); 214 static int xdr_dir __P((XDR *, char *)); 215 static int xdr_fh __P((XDR *, struct nfhret *)); 216 217 #ifndef MOUNT_NOMAIN 218 int 219 main(argc, argv) 220 int argc; 221 char **argv; 222 { 223 return mount_nfs(argc, argv); 224 } 225 #endif 226 227 int 228 mount_nfs(argc, argv) 229 int argc; 230 char *argv[]; 231 { 232 int c, retval; 233 struct nfs_args *nfsargsp; 234 struct nfs_args nfsargs; 235 struct nfsd_cargs ncd; 236 struct sockaddr_storage sa; 237 int mntflags, altflags, i, nfssvc_flag, num; 238 char *name, *p, *spec, *ospec; 239 mntoptparse_t mp; 240 #ifdef NFSKERB 241 uid_t last_ruid; 242 243 last_ruid = -1; 244 if (krb_get_lrealm(realm, 0) != KSUCCESS) 245 (void)strlcpy(realm, KRB_REALM, sizeof(realm)); 246 if (sizeof (struct nfsrpc_nickverf) != RPCX_NICKVERF || 247 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK || 248 ((char *)&ktick.kt) - ((char *)&ktick) != NFSX_UNSIGNED || 249 ((char *)ktick.kt.dat) - ((char *)&ktick) != 2 * NFSX_UNSIGNED) 250 warnx("Yikes! NFSKERB structs not packed!!\n"); 251 #endif 252 retrycnt = DEF_RETRY; 253 254 mntflags = 0; 255 altflags = 0; 256 nfsargs = nfsdefargs; 257 nfsargsp = &nfsargs; 258 while ((c = getopt(argc, argv, 259 "23a:bcCdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:UX")) != -1) 260 switch (c) { 261 case '3': 262 if (force2) 263 errx(1, "-2 and -3 are mutually exclusive"); 264 force3 = 1; 265 break; 266 case '2': 267 if (force3) 268 errx(1, "-2 and -3 are mutually exclusive"); 269 force2 = 1; 270 nfsargsp->flags &= ~NFSMNT_NFSV3; 271 break; 272 case 'a': 273 num = strtol(optarg, &p, 10); 274 if (*p || num < 0) 275 errx(1, "illegal -a value -- %s", optarg); 276 nfsargsp->readahead = num; 277 nfsargsp->flags |= NFSMNT_READAHEAD; 278 break; 279 case 'b': 280 opflags |= BGRND; 281 break; 282 case 'c': 283 nfsargsp->flags |= NFSMNT_NOCONN; 284 break; 285 case 'C': 286 nfsargsp->flags &= ~NFSMNT_NOCONN; 287 break; 288 case 'D': 289 num = strtol(optarg, &p, 10); 290 if (*p || num <= 0) 291 errx(1, "illegal -D value -- %s", optarg); 292 nfsargsp->deadthresh = num; 293 nfsargsp->flags |= NFSMNT_DEADTHRESH; 294 break; 295 case 'd': 296 nfsargsp->flags |= NFSMNT_DUMBTIMR; 297 break; 298 #if 0 /* XXXX */ 299 case 'g': 300 num = strtol(optarg, &p, 10); 301 if (*p || num <= 0) 302 errx(1, "illegal -g value -- %s", optarg); 303 set_rpc_maxgrouplist(num); 304 nfsargsp->maxgrouplist = num; 305 nfsargsp->flags |= NFSMNT_MAXGRPS; 306 break; 307 #endif 308 case 'I': 309 num = strtol(optarg, &p, 10); 310 if (*p || num <= 0) 311 errx(1, "illegal -I value -- %s", optarg); 312 nfsargsp->readdirsize = num; 313 nfsargsp->flags |= NFSMNT_READDIRSIZE; 314 break; 315 case 'i': 316 nfsargsp->flags |= NFSMNT_INT; 317 break; 318 #ifdef NFSKERB 319 case 'K': 320 nfsargsp->flags |= NFSMNT_KERB; 321 break; 322 #endif 323 case 'L': 324 num = strtol(optarg, &p, 10); 325 if (*p || num < 2) 326 errx(1, "illegal -L value -- %s", optarg); 327 nfsargsp->leaseterm = num; 328 nfsargsp->flags |= NFSMNT_LEASETERM; 329 break; 330 case 'l': 331 nfsargsp->flags |= NFSMNT_RDIRPLUS; 332 break; 333 #ifdef NFSKERB 334 case 'm': 335 (void)strlcpy(realm, optarg, sizeof(realm)); 336 break; 337 #endif 338 case 'o': 339 mp = getmntopts(optarg, mopts, &mntflags, &altflags); 340 if (mp == NULL) 341 err(1, NULL); 342 if (altflags & ALTF_BG) 343 opflags |= BGRND; 344 if (altflags & ALTF_CONN) 345 nfsargsp->flags &= ~NFSMNT_NOCONN; 346 if (altflags & ALTF_DUMBTIMR) 347 nfsargsp->flags |= NFSMNT_DUMBTIMR; 348 if (altflags & ALTF_INTR) 349 nfsargsp->flags |= NFSMNT_INT; 350 #ifdef NFSKERB 351 if (altflags & ALTF_KERB) 352 nfsargsp->flags |= NFSMNT_KERB; 353 #endif 354 if (altflags & ALTF_NFSV3) { 355 if (force2) 356 errx(1, "conflicting version options"); 357 force3 = 1; 358 } 359 if (altflags & ALTF_NFSV2) { 360 if (force3) 361 errx(1, "conflicting version options"); 362 force2 = 1; 363 nfsargsp->flags &= ~NFSMNT_NFSV3; 364 } 365 if (altflags & ALTF_RDIRPLUS) 366 nfsargsp->flags |= NFSMNT_RDIRPLUS; 367 if (altflags & ALTF_MNTUDP) 368 mnttcp_ok = 0; 369 if (altflags & ALTF_NORESPORT) 370 nfsargsp->flags &= ~NFSMNT_RESVPORT; 371 #ifdef ISO 372 if (altflags & ALTF_SEQPACKET) 373 nfsargsp->sotype = SOCK_SEQPACKET; 374 #endif 375 if (altflags & ALTF_NQNFS) { 376 if (force2) 377 errx(1, "nqnfs only available with v3"); 378 force3 = 1; 379 nfsargsp->flags |= NFSMNT_NQNFS; 380 } 381 if (altflags & ALTF_SOFT) 382 nfsargsp->flags |= NFSMNT_SOFT; 383 if (altflags & ALTF_TCP) { 384 nfsargsp->sotype = SOCK_STREAM; 385 nfsproto = IPPROTO_TCP; 386 } 387 if (altflags & ALTF_PORT) { 388 port = getmntoptnum(mp, "port"); 389 } 390 if (altflags & ALTF_RSIZE) { 391 nfsargsp->rsize = 392 (int)getmntoptnum(mp, "rsize"); 393 nfsargsp->flags |= NFSMNT_RSIZE; 394 } 395 if (altflags & ALTF_WSIZE) { 396 nfsargsp->wsize = 397 (int)getmntoptnum(mp, "wsize"); 398 nfsargsp->flags |= NFSMNT_WSIZE; 399 } 400 if (altflags & ALTF_RDIRSIZE) { 401 nfsargsp->rsize = 402 (int)getmntoptnum(mp, "rdirsize"); 403 nfsargsp->flags |= NFSMNT_READDIRSIZE; 404 } 405 #if 0 406 if (altflags & ALTF_MAXGRPS) { 407 set_rpc_maxgrouplist(num); 408 nfsargsp->maxgrouplist = 409 (int)getmntoptnum(mp, "maxgrps"); 410 nfsargsp->flags |= NFSMNT_MAXGRPS; 411 } 412 #endif 413 if (altflags & ALTF_LEASETERM) { 414 nfsargsp->leaseterm = 415 (int)getmntoptnum(mp, "leaseterm"); 416 nfsargsp->flags |= NFSMNT_LEASETERM; 417 } 418 if (altflags & ALTF_READAHEAD) { 419 nfsargsp->readahead = 420 (int)getmntoptnum(mp, "readahead"); 421 nfsargsp->flags |= NFSMNT_READAHEAD; 422 } 423 if (altflags & ALTF_DEADTHRESH) { 424 nfsargsp->deadthresh = 425 (int)getmntoptnum(mp, "deadthresh"); 426 nfsargsp->flags |= NFSMNT_DEADTHRESH; 427 } 428 if (altflags & ALTF_TIMEO) { 429 nfsargsp->timeo = 430 (int)getmntoptnum(mp, "timeo"); 431 nfsargsp->flags |= NFSMNT_TIMEO; 432 } 433 if (altflags & ALTF_RETRANS) { 434 nfsargsp->retrans = 435 (int)getmntoptnum(mp, "retrans"); 436 nfsargsp->flags |= NFSMNT_RETRANS; 437 } 438 altflags = 0; 439 freemntopts(mp); 440 break; 441 case 'P': 442 nfsargsp->flags |= NFSMNT_RESVPORT; 443 break; 444 case 'p': 445 nfsargsp->flags &= ~NFSMNT_RESVPORT; 446 break; 447 case 'q': 448 if (force2) 449 errx(1, "nqnfs only available with v3"); 450 force3 = 1; 451 nfsargsp->flags |= NFSMNT_NQNFS; 452 break; 453 case 'R': 454 num = strtol(optarg, &p, 10); 455 if (*p || num <= 0) 456 errx(1, "illegal -R value -- %s", optarg); 457 retrycnt = num; 458 break; 459 case 'r': 460 num = strtol(optarg, &p, 10); 461 if (*p || num <= 0) 462 errx(1, "illegal -r value -- %s", optarg); 463 nfsargsp->rsize = num; 464 nfsargsp->flags |= NFSMNT_RSIZE; 465 break; 466 #ifdef ISO 467 case 'S': 468 nfsargsp->sotype = SOCK_SEQPACKET; 469 break; 470 #endif 471 case 's': 472 nfsargsp->flags |= NFSMNT_SOFT; 473 break; 474 case 'T': 475 nfsargsp->sotype = SOCK_STREAM; 476 nfsproto = IPPROTO_TCP; 477 break; 478 case 't': 479 num = strtol(optarg, &p, 10); 480 if (*p || num <= 0) 481 errx(1, "illegal -t value -- %s", optarg); 482 nfsargsp->timeo = num; 483 nfsargsp->flags |= NFSMNT_TIMEO; 484 break; 485 case 'w': 486 num = strtol(optarg, &p, 10); 487 if (*p || num <= 0) 488 errx(1, "illegal -w value -- %s", optarg); 489 nfsargsp->wsize = num; 490 nfsargsp->flags |= NFSMNT_WSIZE; 491 break; 492 case 'x': 493 num = strtol(optarg, &p, 10); 494 if (*p || num <= 0) 495 errx(1, "illegal -x value -- %s", optarg); 496 nfsargsp->retrans = num; 497 nfsargsp->flags |= NFSMNT_RETRANS; 498 break; 499 case 'X': 500 nfsargsp->flags |= NFSMNT_XLATECOOKIE; 501 break; 502 case 'U': 503 mnttcp_ok = 0; 504 break; 505 default: 506 usage(); 507 break; 508 } 509 argc -= optind; 510 argv += optind; 511 512 if (argc != 2) 513 usage(); 514 515 spec = *argv++; 516 name = *argv; 517 if ((ospec = strdup(spec)) == NULL) { 518 err(1, "strdup"); 519 } 520 521 if ((mntflags & MNT_GETARGS) != 0) { 522 memset(&sa, 0, sizeof(sa)); 523 nfsargsp->addr = (struct sockaddr *)&sa; 524 nfsargsp->addrlen = sizeof(sa); 525 } else { 526 if (!getnfsargs(spec, nfsargsp)) 527 exit(1); 528 } 529 if ((retval = mount(MOUNT_NFS, name, mntflags, nfsargsp))) { 530 /* Did we just default to v3 on a v2-only kernel? 531 * If so, default to v2 & try again */ 532 if ((errno == EPROGMISMATCH) && !force3) { 533 nfsargsp->flags &= ~NFSMNT_NFSV3; 534 retval = mount(MOUNT_NFS, name, mntflags, nfsargsp); 535 } 536 } 537 if (retval) 538 err(1, "%s on %s", ospec, name); 539 if (mntflags & MNT_GETARGS) { 540 shownfsargs(nfsargsp); 541 return (0); 542 } 543 544 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 545 if ((opflags & ISBGRND) == 0) { 546 if ((i = fork()) != 0) { 547 if (i == -1) 548 err(1, "nqnfs 1"); 549 exit(0); 550 } 551 (void) setsid(); 552 (void) close(STDIN_FILENO); 553 (void) close(STDOUT_FILENO); 554 (void) close(STDERR_FILENO); 555 (void) chdir("/"); 556 } 557 openlog("mount_nfs", LOG_PID, LOG_DAEMON); 558 nfssvc_flag = NFSSVC_MNTD; 559 ncd.ncd_dirp = name; 560 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 561 if (errno != ENEEDAUTH) { 562 syslog(LOG_ERR, "nfssvc err %m"); 563 continue; 564 } 565 nfssvc_flag = 566 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 567 #ifdef NFSKERB 568 /* 569 * Set up as ncd_authuid for the kerberos call. 570 * Must set ruid to ncd_authuid and reset the 571 * ticket name iff ncd_authuid is not the same 572 * as last time, so that the right ticket file 573 * is found. 574 * Get the Kerberos credential structure so that 575 * we have the seesion key and get a ticket for 576 * this uid. 577 * For more info see the IETF Draft "Authentication 578 * in ONC RPC". 579 */ 580 if (ncd.ncd_authuid != last_ruid) { 581 krb_set_tkt_string(""); 582 last_ruid = ncd.ncd_authuid; 583 } 584 setreuid(ncd.ncd_authuid, 0); 585 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 586 if (kret == RET_NOTKT) { 587 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 588 DEFAULT_TKT_LIFE); 589 if (kret == KSUCCESS) 590 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 591 &kcr); 592 } 593 if (kret == KSUCCESS) 594 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 595 realm, 0); 596 597 /* 598 * Fill in the AKN_FULLNAME authenticator and verfier. 599 * Along with the Kerberos ticket, we need to build 600 * the timestamp verifier and encrypt it in CBC mode. 601 */ 602 if (kret == KSUCCESS && 603 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 604 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 605 ncd.ncd_authtype = RPCAUTH_KERB4; 606 ncd.ncd_authstr = (u_char *)&ktick; 607 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 608 3 * NFSX_UNSIGNED; 609 ncd.ncd_verfstr = (u_char *)&kverf; 610 ncd.ncd_verflen = sizeof (kverf); 611 memmove(ncd.ncd_key, kcr.session, 612 sizeof (kcr.session)); 613 kin.t1 = htonl(ktv.tv_sec); 614 kin.t2 = htonl(ktv.tv_usec); 615 kin.w1 = htonl(NFS_KERBTTL); 616 kin.w2 = htonl(NFS_KERBTTL - 1); 617 memset((caddr_t)kivec, 0, sizeof (kivec)); 618 619 /* 620 * Encrypt kin in CBC mode using the session 621 * key in kcr. 622 */ 623 XXX 624 625 /* 626 * Finally, fill the timestamp verifier into the 627 * authenticator and verifier. 628 */ 629 ktick.kind = htonl(RPCAKN_FULLNAME); 630 kverf.kind = htonl(RPCAKN_FULLNAME); 631 NFS_KERBW1(ktick.kt) = kout.w1; 632 ktick.kt.length = htonl(ktick.kt.length); 633 kverf.verf.t1 = kout.t1; 634 kverf.verf.t2 = kout.t2; 635 kverf.verf.w2 = kout.w2; 636 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 637 } 638 setreuid(0, 0); 639 #endif /* NFSKERB */ 640 } 641 } 642 exit(0); 643 } 644 645 static void 646 shownfsargs(nfsargsp) 647 const struct nfs_args *nfsargsp; 648 { 649 char fbuf[2048]; 650 char host[NI_MAXHOST], serv[NI_MAXSERV]; 651 int error; 652 653 (void)snprintb(fbuf, sizeof(fbuf), NFSMNT_BITS, nfsargsp->flags); 654 if (nfsargsp->addr != NULL) { 655 error = getnameinfo(nfsargsp->addr, nfsargsp->addrlen, host, 656 sizeof(host), serv, sizeof(serv), 657 NI_NUMERICHOST | NI_NUMERICSERV); 658 if (error != 0) 659 warnx("getnameinfo: %s", gai_strerror(error)); 660 } else 661 error = -1; 662 663 if (error == 0) 664 printf("addr=%s, port=%s, addrlen=%d, ", 665 host, serv, nfsargsp->addrlen); 666 printf("sotype=%d, proto=%d, fhsize=%d, " 667 "flags=%s, wsize=%d, rsize=%d, readdirsize=%d, timeo=%d, " 668 "retrans=%d, maxgrouplist=%d, readahead=%d, leaseterm=%d, " 669 "deadthresh=%d\n", 670 nfsargsp->sotype, 671 nfsargsp->proto, 672 nfsargsp->fhsize, 673 fbuf, 674 nfsargsp->wsize, 675 nfsargsp->rsize, 676 nfsargsp->readdirsize, 677 nfsargsp->timeo, 678 nfsargsp->retrans, 679 nfsargsp->maxgrouplist, 680 nfsargsp->readahead, 681 nfsargsp->leaseterm, 682 nfsargsp->deadthresh); 683 } 684 685 static int 686 getnfsargs(spec, nfsargsp) 687 char *spec; 688 struct nfs_args *nfsargsp; 689 { 690 CLIENT *clp; 691 struct addrinfo hints, *ai_nfs, *ai; 692 int ecode; 693 char host[NI_MAXHOST], serv[NI_MAXSERV]; 694 static struct netbuf nfs_nb; 695 static struct sockaddr_storage nfs_ss; 696 struct netconfig *nconf; 697 char *netid; 698 #ifdef ISO 699 static struct sockaddr_iso isoaddr; 700 struct iso_addr *isop; 701 int isoflag = 0; 702 #endif 703 struct timeval pertry, try; 704 enum clnt_stat clnt_stat; 705 int i, nfsvers, mntvers, orgcnt; 706 char *hostp, *delimp; 707 #ifdef NFSKERB 708 char *cp; 709 #endif 710 static struct nfhret nfhret; 711 static char nam[MNAMELEN + 1]; 712 713 strncpy(nam, spec, MNAMELEN); 714 nam[MNAMELEN] = '\0'; 715 if ((delimp = strchr(spec, '@')) != NULL) { 716 hostp = delimp + 1; 717 } else if ((delimp = strrchr(spec, ':')) != NULL) { 718 hostp = spec; 719 spec = delimp + 1; 720 } else { 721 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 722 return (0); 723 } 724 *delimp = '\0'; 725 /* 726 * DUMB!! Until the mount protocol works on iso transport, we must 727 * supply both an iso and an inet address for the host. 728 */ 729 #ifdef ISO 730 if (!strncmp(hostp, "iso=", 4)) { 731 u_short isoport; 732 733 hostp += 4; 734 isoflag++; 735 if ((delimp = strchr(hostp, '+')) == NULL) { 736 warnx("no iso+inet address"); 737 return (0); 738 } 739 *delimp = '\0'; 740 if ((isop = iso_addr(hostp)) == NULL) { 741 warnx("bad ISO address"); 742 return (0); 743 } 744 memset(&isoaddr, 0, sizeof (isoaddr)); 745 memcpy(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 746 isoaddr.siso_len = sizeof (isoaddr); 747 isoaddr.siso_family = AF_ISO; 748 isoaddr.siso_tlen = 2; 749 isoport = htons(NFS_PORT); 750 memcpy(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 751 hostp = delimp + 1; 752 } 753 #endif /* ISO */ 754 755 /* 756 * Handle an internet host address and reverse resolve it if 757 * doing Kerberos. 758 */ 759 memset(&hints, 0, sizeof hints); 760 hints.ai_flags = AI_NUMERICHOST; 761 hints.ai_socktype = nfsargsp->sotype; 762 if (getaddrinfo(hostp, "nfs", &hints, &ai_nfs) == 0) { 763 if ((nfsargsp->flags & NFSMNT_KERB)) { 764 hints.ai_flags = 0; 765 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host, 766 sizeof host, serv, sizeof serv, 0) != 0) { 767 warnx("can't reverse resolve net address for " 768 "host \"%s\": %s", hostp, 769 gai_strerror(ecode)); 770 return (0); 771 } 772 hostp = host; 773 } 774 } else { 775 hints.ai_flags = 0; 776 if ((ecode = getaddrinfo(hostp, "nfs", &hints, &ai_nfs)) != 0) { 777 warnx("can't get net id for host \"%s\": %s", hostp, 778 gai_strerror(ecode)); 779 return (0); 780 } 781 } 782 #ifdef NFSKERB 783 if (nfsargsp->flags & NFSMNT_KERB) { 784 strncpy(inst, hp->h_name, INST_SZ); 785 inst[INST_SZ - 1] = '\0'; 786 if (cp = strchr(inst, '.')) 787 *cp = '\0'; 788 } 789 #endif /* NFSKERB */ 790 791 if (force2) { 792 nfsvers = NFS_VER2; 793 mntvers = RPCMNT_VER1; 794 } else { 795 nfsvers = NFS_VER3; 796 mntvers = RPCMNT_VER3; 797 } 798 orgcnt = retrycnt; 799 nfhret.stat = EACCES; /* Mark not yet successful */ 800 801 for (ai = ai_nfs; ai; ai = ai->ai_next) { 802 /* 803 * XXX. Nead a generic (family, type, proto) -> nconf interface. 804 * __rpc_*2nconf exist, maybe they should be exported. 805 */ 806 if (nfsargsp->sotype == SOCK_STREAM) { 807 if (ai->ai_family == AF_INET6) 808 netid = "tcp6"; 809 else 810 netid = "tcp"; 811 } else { 812 if (ai->ai_family == AF_INET6) 813 netid = "udp6"; 814 else 815 netid = "udp"; 816 } 817 818 nconf = getnetconfigent(netid); 819 820 tryagain: 821 retrycnt = orgcnt; 822 823 while (retrycnt > 0) { 824 nfs_nb.buf = &nfs_ss; 825 nfs_nb.maxlen = sizeof nfs_ss; 826 if (!rpcb_getaddr(RPCPROG_NFS, nfsvers, nconf, &nfs_nb, hostp)){ 827 if (rpc_createerr.cf_stat == RPC_SYSTEMERROR) { 828 nfhret.stat = rpc_createerr.cf_error.re_errno; 829 break; 830 } 831 if (rpc_createerr.cf_stat == RPC_UNKNOWNPROTO) { 832 nfhret.stat = EPROTONOSUPPORT; 833 break; 834 } 835 if ((opflags & ISBGRND) == 0) 836 clnt_pcreateerror( 837 "mount_nfs: rpcbind to nfs on server"); 838 } else { 839 pertry.tv_sec = 10; 840 pertry.tv_usec = 0; 841 /* 842 * XXX relies on clnt_tcp_create to bind to a reserved 843 * socket. 844 */ 845 clp = clnt_tp_create(hostp, RPCPROG_MNT, mntvers, 846 mnttcp_ok ? nconf : getnetconfigent("udp")); 847 if (clp == NULL) { 848 if ((opflags & ISBGRND) == 0) { 849 clnt_pcreateerror( 850 "Cannot MNT RPC (mountd)"); 851 } 852 } else { 853 CLNT_CONTROL(clp, CLSET_RETRY_TIMEOUT, 854 (char *)&pertry); 855 clp->cl_auth = authsys_create_default(); 856 try.tv_sec = 10; 857 try.tv_usec = 0; 858 if (nfsargsp->flags & NFSMNT_KERB) 859 nfhret.auth = RPCAUTH_KERB4; 860 else 861 nfhret.auth = RPCAUTH_UNIX; 862 nfhret.vers = mntvers; 863 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 864 xdr_dir, spec, xdr_fh, &nfhret, try); 865 switch (clnt_stat) { 866 case RPC_PROGVERSMISMATCH: 867 if (nfsvers == NFS_VER3 && !force3) { 868 nfsvers = NFS_VER2; 869 mntvers = RPCMNT_VER1; 870 nfsargsp->flags &= 871 ~NFSMNT_NFSV3; 872 goto tryagain; 873 } else { 874 errx(1, "%s", clnt_sperror(clp, 875 "MNT RPC")); 876 } 877 case RPC_SUCCESS: 878 auth_destroy(clp->cl_auth); 879 clnt_destroy(clp); 880 retrycnt = 0; 881 break; 882 default: 883 /* XXX should give up on some errors */ 884 if ((opflags & ISBGRND) == 0) 885 warnx("%s", clnt_sperror(clp, 886 "bad MNT RPC")); 887 break; 888 } 889 } 890 } 891 if (--retrycnt > 0) { 892 if (opflags & BGRND) { 893 opflags &= ~BGRND; 894 if ((i = fork()) != 0) { 895 if (i == -1) 896 err(1, "nqnfs 2"); 897 exit(0); 898 } 899 (void) setsid(); 900 (void) close(STDIN_FILENO); 901 (void) close(STDOUT_FILENO); 902 (void) close(STDERR_FILENO); 903 (void) chdir("/"); 904 opflags |= ISBGRND; 905 } 906 sleep(60); 907 } 908 } 909 if (nfhret.stat == 0) 910 break; 911 } 912 freeaddrinfo(ai_nfs); 913 if (nfhret.stat) { 914 if (opflags & ISBGRND) 915 exit(1); 916 errno = nfhret.stat; 917 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 918 return (0); 919 } 920 #ifdef ISO 921 if (isoflag) { 922 nfsargsp->addr = (struct sockaddr *) &isoaddr; 923 nfsargsp->addrlen = sizeof (isoaddr); 924 } else 925 #endif /* ISO */ 926 { 927 nfsargsp->addr = (struct sockaddr *) nfs_nb.buf; 928 nfsargsp->addrlen = nfs_nb.len; 929 if (port != 0) { 930 struct sockaddr *sa = nfsargsp->addr; 931 switch (sa->sa_family) { 932 case AF_INET: 933 ((struct sockaddr_in *)sa)->sin_port = port; 934 #ifdef INET6 935 case AF_INET6: 936 ((struct sockaddr_in6 *)sa)->sin6_port = port; 937 break; 938 #endif 939 default: 940 errx(1, "Unsupported socket family %d", 941 sa->sa_family); 942 } 943 } 944 } 945 nfsargsp->fh = nfhret.nfh; 946 nfsargsp->fhsize = nfhret.fhsize; 947 nfsargsp->hostname = nam; 948 return (1); 949 } 950 951 /* 952 * xdr routines for mount rpc's 953 */ 954 static int 955 xdr_dir(xdrsp, dirp) 956 XDR *xdrsp; 957 char *dirp; 958 { 959 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 960 } 961 962 static int 963 xdr_fh(xdrsp, np) 964 XDR *xdrsp; 965 struct nfhret *np; 966 { 967 int i; 968 long auth, authcnt, authfnd = 0; 969 970 if (!xdr_u_long(xdrsp, &np->stat)) 971 return (0); 972 if (np->stat) 973 return (1); 974 switch (np->vers) { 975 case 1: 976 np->fhsize = NFSX_V2FH; 977 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 978 case 3: 979 if (!xdr_long(xdrsp, &np->fhsize)) 980 return (0); 981 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 982 return (0); 983 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 984 return (0); 985 if (!xdr_long(xdrsp, &authcnt)) 986 return (0); 987 for (i = 0; i < authcnt; i++) { 988 if (!xdr_long(xdrsp, &auth)) 989 return (0); 990 if (auth == np->auth) 991 authfnd++; 992 } 993 /* 994 * Some servers, such as DEC's OSF/1 return a nil authenticator 995 * list to indicate RPCAUTH_UNIX. 996 */ 997 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 998 np->stat = EAUTH; 999 return (1); 1000 }; 1001 return (0); 1002 } 1003 1004 static void 1005 usage() 1006 { 1007 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n%s\n", 1008 "[-23bcCdiKlpPqsTUX] [-a maxreadahead] [-D deadthresh]", 1009 "\t[-g maxgroups] [-I readdirsize] [-L leaseterm] [-m realm]", 1010 "\t[-o options] [-R retrycnt] [-r readsize] [-t timeout]", 1011 "\t[-w writesize] [-x retrans]", 1012 "\trhost:path node"); 1013 exit(1); 1014 } 1015
Indexes created Tue Sep 30 06:09:59 GMT 2025