mount_nfs.c revision 1.43
1 /* $NetBSD: mount_nfs.c,v 1.43 2003/07/13 08:08:12 itojun 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 1.43 2003/07/13 08:08:12 itojun 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/stat.h> 57 #include <syslog.h> 58 59 #include <rpc/rpc.h> 60 #include <rpc/pmap_clnt.h> 61 #include <rpc/pmap_prot.h> 62 63 #ifdef ISO 64 #include <netiso/iso.h> 65 #endif 66 67 #ifdef NFSKERB 68 #include <kerberosIV/des.h> 69 #include <kerberosIV/krb.h> 70 #endif 71 72 #include <nfs/rpcv2.h> 73 #include <nfs/nfsproto.h> 74 #include <nfs/nfs.h> 75 #include <nfs/nqnfs.h> 76 #include <nfs/nfsmount.h> 77 78 #include <arpa/inet.h> 79 80 #include <ctype.h> 81 #include <err.h> 82 #include <errno.h> 83 #include <fcntl.h> 84 #include <netdb.h> 85 #include <signal.h> 86 #include <stdio.h> 87 #include <stdlib.h> 88 #include <string.h> 89 #include <unistd.h> 90 #include <util.h> 91 92 #include <mntopts.h> 93 94 #define ALTF_BG 0x00000001 95 #define ALTF_CONN 0x00000002 96 #define ALTF_DUMBTIMR 0x00000004 97 #define ALTF_INTR 0x00000008 98 #define ALTF_KERB 0x00000010 99 #define ALTF_NFSV3 0x00000020 100 #define ALTF_RDIRPLUS 0x00000040 101 #define ALTF_MNTUDP 0x00000080 102 #define ALTF_NORESPORT 0x00000100 103 #define ALTF_SEQPACKET 0x00000200 104 #define ALTF_NQNFS 0x00000400 105 #define ALTF_SOFT 0x00000800 106 #define ALTF_TCP 0x00001000 107 #define ALTF_NFSV2 0x00002000 108 #define ALTF_PORT 0x00004000 109 #define ALTF_RSIZE 0x00008000 110 #define ALTF_WSIZE 0x00010000 111 #define ALTF_RDIRSIZE 0x00020000 112 #define ALTF_MAXGRPS 0x00040000 113 #define ALTF_LEASETERM 0x00080000 114 #define ALTF_READAHEAD 0x00100000 115 #define ALTF_DEADTHRESH 0x00200000 116 #define ALTF_TIMEO 0x00400000 117 #define ALTF_RETRANS 0x00800000 118 119 static const struct mntopt mopts[] = { 120 MOPT_STDOPTS, 121 MOPT_FORCE, 122 MOPT_UPDATE, 123 MOPT_GETARGS, 124 { "bg", 0, ALTF_BG, 1 }, 125 { "conn", 0, ALTF_CONN, 1 }, 126 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 127 { "intr", 0, ALTF_INTR, 1 }, 128 #ifdef NFSKERB 129 { "kerb", 0, ALTF_KERB, 1 }, 130 #endif 131 { "nfsv3", 0, ALTF_NFSV3, 1 }, 132 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 133 { "mntudp", 0, ALTF_MNTUDP, 1 }, 134 { "noresport", 0, ALTF_NORESPORT, 1 }, 135 #ifdef ISO 136 { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 137 #endif 138 { "nqnfs", 0, ALTF_NQNFS, 1 }, 139 { "soft", 0, ALTF_SOFT, 1 }, 140 { "tcp", 0, ALTF_TCP, 1 }, 141 { "nfsv2", 0, ALTF_NFSV2, 1 }, 142 { "port", 0, ALTF_PORT, 1 }, 143 { "rsize", 0, ALTF_RSIZE, 1 }, 144 { "wsize", 0, ALTF_WSIZE, 1 }, 145 { "rdirsize", 0, ALTF_RDIRSIZE, 1 }, 146 { "maxgrps", 0, ALTF_MAXGRPS, 1 }, 147 { "leaseterm", 0, ALTF_LEASETERM, 1 }, 148 { "readahead", 0, ALTF_READAHEAD, 1 }, 149 { "deadthresh", 0, ALTF_DEADTHRESH, 1 }, 150 { "timeo", 0, ALTF_TIMEO, 1 }, 151 { NULL } 152 153 }; 154 155 struct nfs_args nfsdefargs = { 156 NFS_ARGSVERSION, 157 (struct sockaddr *)0, 158 sizeof (struct sockaddr_in), 159 SOCK_DGRAM, 160 0, 161 (u_char *)0, 162 0, 163 NFSMNT_NFSV3|NFSMNT_NOCONN|NFSMNT_RESVPORT, 164 NFS_WSIZE, 165 NFS_RSIZE, 166 NFS_READDIRSIZE, 167 10, 168 NFS_RETRANS, 169 NFS_MAXGRPS, 170 NFS_DEFRAHEAD, 171 NQ_DEFLEASE, 172 NQ_DEADTHRESH, 173 (char *)0, 174 }; 175 176 struct nfhret { 177 u_long stat; 178 long vers; 179 long auth; 180 long fhsize; 181 u_char nfh[NFSX_V3FHMAX]; 182 }; 183 #define DEF_RETRY 10000 184 #define BGRND 1 185 #define ISBGRND 2 186 int retrycnt; 187 int opflags = 0; 188 int nfsproto = IPPROTO_UDP; 189 int force2 = 0; 190 int force3 = 0; 191 int mnttcp_ok = 1; 192 int port = 0; 193 194 #ifdef NFSKERB 195 static char inst[INST_SZ]; 196 static char realm[REALM_SZ]; 197 static struct { 198 u_long kind; 199 KTEXT_ST kt; 200 } ktick; 201 static struct nfsrpc_nickverf kverf; 202 static struct nfsrpc_fullblock kin, kout; 203 static NFSKERBKEY_T kivec; 204 static CREDENTIALS kcr; 205 static struct timeval ktv; 206 static NFSKERBKEYSCHED_T kerb_keysched; 207 #endif 208 209 static void shownfsargs __P((const struct nfs_args *)); 210 static int getnfsargs __P((char *, struct nfs_args *)); 211 #ifdef ISO 212 static struct iso_addr *iso_addr __P((const char *)); 213 #endif 214 int main __P((int, char *[])); 215 int mount_nfs __P((int argc, char **argv)); 216 /* void set_rpc_maxgrouplist __P((int)); */ 217 static void usage __P((void)); 218 static int xdr_dir __P((XDR *, char *)); 219 static int xdr_fh __P((XDR *, struct nfhret *)); 220 221 #ifndef MOUNT_NOMAIN 222 int 223 main(argc, argv) 224 int argc; 225 char **argv; 226 { 227 return mount_nfs(argc, argv); 228 } 229 #endif 230 231 int 232 mount_nfs(argc, argv) 233 int argc; 234 char *argv[]; 235 { 236 int c, retval; 237 struct nfs_args *nfsargsp; 238 struct nfs_args nfsargs; 239 struct nfsd_cargs ncd; 240 struct sockaddr_storage sa; 241 int mntflags, altflags, i, nfssvc_flag, num; 242 char *name, *p, *spec, *ospec; 243 mntoptparse_t mp; 244 #ifdef NFSKERB 245 uid_t last_ruid; 246 247 last_ruid = -1; 248 if (krb_get_lrealm(realm, 0) != KSUCCESS) 249 (void)strlcpy(realm, KRB_REALM, sizeof(realm)); 250 if (sizeof (struct nfsrpc_nickverf) != RPCX_NICKVERF || 251 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK || 252 ((char *)&ktick.kt) - ((char *)&ktick) != NFSX_UNSIGNED || 253 ((char *)ktick.kt.dat) - ((char *)&ktick) != 2 * NFSX_UNSIGNED) 254 warnx("Yikes! NFSKERB structs not packed!!\n"); 255 #endif 256 retrycnt = DEF_RETRY; 257 258 mntflags = 0; 259 altflags = 0; 260 nfsargs = nfsdefargs; 261 nfsargsp = &nfsargs; 262 while ((c = getopt(argc, argv, 263 "23a:bcCdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:UX")) != -1) 264 switch (c) { 265 case '3': 266 if (force2) 267 errx(1, "-2 and -3 are mutually exclusive"); 268 force3 = 1; 269 break; 270 case '2': 271 if (force3) 272 errx(1, "-2 and -3 are mutually exclusive"); 273 force2 = 1; 274 nfsargsp->flags &= ~NFSMNT_NFSV3; 275 break; 276 case 'a': 277 num = strtol(optarg, &p, 10); 278 if (*p || num < 0) 279 errx(1, "illegal -a value -- %s", optarg); 280 nfsargsp->readahead = num; 281 nfsargsp->flags |= NFSMNT_READAHEAD; 282 break; 283 case 'b': 284 opflags |= BGRND; 285 break; 286 case 'c': 287 nfsargsp->flags |= NFSMNT_NOCONN; 288 break; 289 case 'C': 290 nfsargsp->flags &= ~NFSMNT_NOCONN; 291 break; 292 case 'D': 293 num = strtol(optarg, &p, 10); 294 if (*p || num <= 0) 295 errx(1, "illegal -D value -- %s", optarg); 296 nfsargsp->deadthresh = num; 297 nfsargsp->flags |= NFSMNT_DEADTHRESH; 298 break; 299 case 'd': 300 nfsargsp->flags |= NFSMNT_DUMBTIMR; 301 break; 302 #if 0 /* XXXX */ 303 case 'g': 304 num = strtol(optarg, &p, 10); 305 if (*p || num <= 0) 306 errx(1, "illegal -g value -- %s", optarg); 307 set_rpc_maxgrouplist(num); 308 nfsargsp->maxgrouplist = num; 309 nfsargsp->flags |= NFSMNT_MAXGRPS; 310 break; 311 #endif 312 case 'I': 313 num = strtol(optarg, &p, 10); 314 if (*p || num <= 0) 315 errx(1, "illegal -I value -- %s", optarg); 316 nfsargsp->readdirsize = num; 317 nfsargsp->flags |= NFSMNT_READDIRSIZE; 318 break; 319 case 'i': 320 nfsargsp->flags |= NFSMNT_INT; 321 break; 322 #ifdef NFSKERB 323 case 'K': 324 nfsargsp->flags |= NFSMNT_KERB; 325 break; 326 #endif 327 case 'L': 328 num = strtol(optarg, &p, 10); 329 if (*p || num < 2) 330 errx(1, "illegal -L value -- %s", optarg); 331 nfsargsp->leaseterm = num; 332 nfsargsp->flags |= NFSMNT_LEASETERM; 333 break; 334 case 'l': 335 nfsargsp->flags |= NFSMNT_RDIRPLUS; 336 break; 337 #ifdef NFSKERB 338 case 'm': 339 (void)strlcpy(realm, optarg, sizeof(realm)); 340 break; 341 #endif 342 case 'o': 343 mp = getmntopts(optarg, mopts, &mntflags, &altflags); 344 if (mp == NULL) 345 err(1, NULL); 346 if (altflags & ALTF_BG) 347 opflags |= BGRND; 348 if (altflags & ALTF_CONN) 349 nfsargsp->flags &= ~NFSMNT_NOCONN; 350 if (altflags & ALTF_DUMBTIMR) 351 nfsargsp->flags |= NFSMNT_DUMBTIMR; 352 if (altflags & ALTF_INTR) 353 nfsargsp->flags |= NFSMNT_INT; 354 #ifdef NFSKERB 355 if (altflags & ALTF_KERB) 356 nfsargsp->flags |= NFSMNT_KERB; 357 #endif 358 if (altflags & ALTF_NFSV3) { 359 if (force2) 360 errx(1, "conflicting version options"); 361 force3 = 1; 362 } 363 if (altflags & ALTF_NFSV2) { 364 if (force3) 365 errx(1, "conflicting version options"); 366 force2 = 1; 367 nfsargsp->flags &= ~NFSMNT_NFSV3; 368 } 369 if (altflags & ALTF_RDIRPLUS) 370 nfsargsp->flags |= NFSMNT_RDIRPLUS; 371 if (altflags & ALTF_MNTUDP) 372 mnttcp_ok = 0; 373 if (altflags & ALTF_NORESPORT) 374 nfsargsp->flags &= ~NFSMNT_RESVPORT; 375 #ifdef ISO 376 if (altflags & ALTF_SEQPACKET) 377 nfsargsp->sotype = SOCK_SEQPACKET; 378 #endif 379 if (altflags & ALTF_NQNFS) { 380 if (force2) 381 errx(1, "nqnfs only available with v3"); 382 force3 = 1; 383 nfsargsp->flags |= NFSMNT_NQNFS; 384 } 385 if (altflags & ALTF_SOFT) 386 nfsargsp->flags |= NFSMNT_SOFT; 387 if (altflags & ALTF_TCP) { 388 nfsargsp->sotype = SOCK_STREAM; 389 nfsproto = IPPROTO_TCP; 390 } 391 if (altflags & ALTF_PORT) { 392 port = getmntoptnum(mp, "port"); 393 } 394 if (altflags & ALTF_RSIZE) { 395 nfsargsp->rsize = 396 (int)getmntoptnum(mp, "rsize"); 397 nfsargsp->flags |= NFSMNT_RSIZE; 398 } 399 if (altflags & ALTF_WSIZE) { 400 nfsargsp->wsize = 401 (int)getmntoptnum(mp, "wsize"); 402 nfsargsp->flags |= NFSMNT_WSIZE; 403 } 404 if (altflags & ALTF_RDIRSIZE) { 405 nfsargsp->rsize = 406 (int)getmntoptnum(mp, "rdirsize"); 407 nfsargsp->flags |= NFSMNT_READDIRSIZE; 408 } 409 #if 0 410 if (altflags & ALTF_MAXGRPS) { 411 set_rpc_maxgrouplist(num); 412 nfsargsp->maxgrouplist = 413 (int)getmntoptnum(mp, "maxgrps"); 414 nfsargsp->flags |= NFSMNT_MAXGRPS; 415 } 416 #endif 417 if (altflags & ALTF_LEASETERM) { 418 nfsargsp->leaseterm = 419 (int)getmntoptnum(mp, "leaseterm"); 420 nfsargsp->flags |= NFSMNT_LEASETERM; 421 } 422 if (altflags & ALTF_READAHEAD) { 423 nfsargsp->readahead = 424 (int)getmntoptnum(mp, "readahead"); 425 nfsargsp->flags |= NFSMNT_READAHEAD; 426 } 427 if (altflags & ALTF_DEADTHRESH) { 428 nfsargsp->deadthresh = 429 (int)getmntoptnum(mp, "deadthresh"); 430 nfsargsp->flags |= NFSMNT_DEADTHRESH; 431 } 432 if (altflags & ALTF_TIMEO) { 433 nfsargsp->timeo = 434 (int)getmntoptnum(mp, "timeo"); 435 nfsargsp->flags |= NFSMNT_TIMEO; 436 } 437 if (altflags & ALTF_RETRANS) { 438 nfsargsp->retrans = 439 (int)getmntoptnum(mp, "retrans"); 440 nfsargsp->flags |= NFSMNT_RETRANS; 441 } 442 altflags = 0; 443 freemntopts(mp); 444 break; 445 case 'P': 446 nfsargsp->flags |= NFSMNT_RESVPORT; 447 break; 448 case 'p': 449 nfsargsp->flags &= ~NFSMNT_RESVPORT; 450 break; 451 case 'q': 452 if (force2) 453 errx(1, "nqnfs only available with v3"); 454 force3 = 1; 455 nfsargsp->flags |= NFSMNT_NQNFS; 456 break; 457 case 'R': 458 num = strtol(optarg, &p, 10); 459 if (*p || num <= 0) 460 errx(1, "illegal -R value -- %s", optarg); 461 retrycnt = num; 462 break; 463 case 'r': 464 num = strtol(optarg, &p, 10); 465 if (*p || num <= 0) 466 errx(1, "illegal -r value -- %s", optarg); 467 nfsargsp->rsize = num; 468 nfsargsp->flags |= NFSMNT_RSIZE; 469 break; 470 #ifdef ISO 471 case 'S': 472 nfsargsp->sotype = SOCK_SEQPACKET; 473 break; 474 #endif 475 case 's': 476 nfsargsp->flags |= NFSMNT_SOFT; 477 break; 478 case 'T': 479 nfsargsp->sotype = SOCK_STREAM; 480 nfsproto = IPPROTO_TCP; 481 break; 482 case 't': 483 num = strtol(optarg, &p, 10); 484 if (*p || num <= 0) 485 errx(1, "illegal -t value -- %s", optarg); 486 nfsargsp->timeo = num; 487 nfsargsp->flags |= NFSMNT_TIMEO; 488 break; 489 case 'w': 490 num = strtol(optarg, &p, 10); 491 if (*p || num <= 0) 492 errx(1, "illegal -w value -- %s", optarg); 493 nfsargsp->wsize = num; 494 nfsargsp->flags |= NFSMNT_WSIZE; 495 break; 496 case 'x': 497 num = strtol(optarg, &p, 10); 498 if (*p || num <= 0) 499 errx(1, "illegal -x value -- %s", optarg); 500 nfsargsp->retrans = num; 501 nfsargsp->flags |= NFSMNT_RETRANS; 502 break; 503 case 'X': 504 nfsargsp->flags |= NFSMNT_XLATECOOKIE; 505 break; 506 case 'U': 507 mnttcp_ok = 0; 508 break; 509 default: 510 usage(); 511 break; 512 } 513 argc -= optind; 514 argv += optind; 515 516 if (argc != 2) 517 usage(); 518 519 spec = *argv++; 520 name = *argv; 521 if ((ospec = strdup(spec)) == NULL) { 522 err(1, "strdup"); 523 } 524 525 if ((mntflags & MNT_GETARGS) != 0) { 526 memset(&sa, 0, sizeof(sa)); 527 nfsargsp->addr = (struct sockaddr *)&sa; 528 nfsargsp->addrlen = sizeof(sa); 529 } else { 530 if (!getnfsargs(spec, nfsargsp)) 531 exit(1); 532 } 533 if ((retval = mount(MOUNT_NFS, name, mntflags, nfsargsp))) { 534 /* Did we just default to v3 on a v2-only kernel? 535 * If so, default to v2 & try again */ 536 if ((errno == EPROGMISMATCH) && !force3) { 537 nfsargsp->flags &= ~NFSMNT_NFSV3; 538 retval = mount(MOUNT_NFS, name, mntflags, nfsargsp); 539 } 540 } 541 if (retval) 542 err(1, "%s on %s", ospec, name); 543 if (mntflags & MNT_GETARGS) { 544 shownfsargs(nfsargsp); 545 return (0); 546 } 547 548 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 549 if ((opflags & ISBGRND) == 0) { 550 if ((i = fork()) != 0) { 551 if (i == -1) 552 err(1, "nqnfs 1"); 553 exit(0); 554 } 555 (void) setsid(); 556 (void) close(STDIN_FILENO); 557 (void) close(STDOUT_FILENO); 558 (void) close(STDERR_FILENO); 559 (void) chdir("/"); 560 } 561 openlog("mount_nfs", LOG_PID, LOG_DAEMON); 562 nfssvc_flag = NFSSVC_MNTD; 563 ncd.ncd_dirp = name; 564 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 565 if (errno != ENEEDAUTH) { 566 syslog(LOG_ERR, "nfssvc err %m"); 567 continue; 568 } 569 nfssvc_flag = 570 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 571 #ifdef NFSKERB 572 /* 573 * Set up as ncd_authuid for the kerberos call. 574 * Must set ruid to ncd_authuid and reset the 575 * ticket name iff ncd_authuid is not the same 576 * as last time, so that the right ticket file 577 * is found. 578 * Get the Kerberos credential structure so that 579 * we have the seesion key and get a ticket for 580 * this uid. 581 * For more info see the IETF Draft "Authentication 582 * in ONC RPC". 583 */ 584 if (ncd.ncd_authuid != last_ruid) { 585 krb_set_tkt_string(""); 586 last_ruid = ncd.ncd_authuid; 587 } 588 setreuid(ncd.ncd_authuid, 0); 589 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 590 if (kret == RET_NOTKT) { 591 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 592 DEFAULT_TKT_LIFE); 593 if (kret == KSUCCESS) 594 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 595 &kcr); 596 } 597 if (kret == KSUCCESS) 598 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 599 realm, 0); 600 601 /* 602 * Fill in the AKN_FULLNAME authenticator and verfier. 603 * Along with the Kerberos ticket, we need to build 604 * the timestamp verifier and encrypt it in CBC mode. 605 */ 606 if (kret == KSUCCESS && 607 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 608 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 609 ncd.ncd_authtype = RPCAUTH_KERB4; 610 ncd.ncd_authstr = (u_char *)&ktick; 611 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 612 3 * NFSX_UNSIGNED; 613 ncd.ncd_verfstr = (u_char *)&kverf; 614 ncd.ncd_verflen = sizeof (kverf); 615 memmove(ncd.ncd_key, kcr.session, 616 sizeof (kcr.session)); 617 kin.t1 = htonl(ktv.tv_sec); 618 kin.t2 = htonl(ktv.tv_usec); 619 kin.w1 = htonl(NFS_KERBTTL); 620 kin.w2 = htonl(NFS_KERBTTL - 1); 621 memset((caddr_t)kivec, 0, sizeof (kivec)); 622 623 /* 624 * Encrypt kin in CBC mode using the session 625 * key in kcr. 626 */ 627 XXX 628 629 /* 630 * Finally, fill the timestamp verifier into the 631 * authenticator and verifier. 632 */ 633 ktick.kind = htonl(RPCAKN_FULLNAME); 634 kverf.kind = htonl(RPCAKN_FULLNAME); 635 NFS_KERBW1(ktick.kt) = kout.w1; 636 ktick.kt.length = htonl(ktick.kt.length); 637 kverf.verf.t1 = kout.t1; 638 kverf.verf.t2 = kout.t2; 639 kverf.verf.w2 = kout.w2; 640 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 641 } 642 setreuid(0, 0); 643 #endif /* NFSKERB */ 644 } 645 } 646 exit(0); 647 } 648 649 static void 650 shownfsargs(nfsargsp) 651 const struct nfs_args *nfsargsp; 652 { 653 char fbuf[2048]; 654 char host[NI_MAXHOST], serv[NI_MAXSERV]; 655 int error; 656 657 (void)snprintb(fbuf, sizeof(fbuf), NFSMNT_BITS, nfsargsp->flags); 658 if (nfsargsp->addr != NULL) { 659 error = getnameinfo(nfsargsp->addr, nfsargsp->addrlen, host, 660 sizeof(host), serv, sizeof(serv), 661 NI_NUMERICHOST | NI_NUMERICSERV); 662 if (error != 0) 663 warnx("getnameinfo: %s", gai_strerror(error)); 664 } else 665 error = -1; 666 667 if (error == 0) 668 printf("addr=%s, port=%s, addrlen=%d, ", 669 host, serv, nfsargsp->addrlen); 670 printf("sotype=%d, proto=%d, fhsize=%d, " 671 "flags=%s, wsize=%d, rsize=%d, readdirsize=%d, timeo=%d, " 672 "retrans=%d, maxgrouplist=%d, readahead=%d, leaseterm=%d, " 673 "deadthresh=%d\n", 674 nfsargsp->sotype, 675 nfsargsp->proto, 676 nfsargsp->fhsize, 677 fbuf, 678 nfsargsp->wsize, 679 nfsargsp->rsize, 680 nfsargsp->readdirsize, 681 nfsargsp->timeo, 682 nfsargsp->retrans, 683 nfsargsp->maxgrouplist, 684 nfsargsp->readahead, 685 nfsargsp->leaseterm, 686 nfsargsp->deadthresh); 687 } 688 689 static int 690 getnfsargs(spec, nfsargsp) 691 char *spec; 692 struct nfs_args *nfsargsp; 693 { 694 CLIENT *clp; 695 struct addrinfo hints, *ai_nfs, *ai; 696 int ecode; 697 char host[NI_MAXHOST], serv[NI_MAXSERV]; 698 static struct netbuf nfs_nb; 699 static struct sockaddr_storage nfs_ss; 700 struct netconfig *nconf; 701 char *netid; 702 #ifdef ISO 703 static struct sockaddr_iso isoaddr; 704 struct iso_addr *isop; 705 int isoflag = 0; 706 #endif 707 struct timeval pertry, try; 708 enum clnt_stat clnt_stat; 709 int i, nfsvers, mntvers, orgcnt; 710 char *hostp, *delimp; 711 #ifdef NFSKERB 712 char *cp; 713 #endif 714 static struct nfhret nfhret; 715 static char nam[MNAMELEN + 1]; 716 717 strncpy(nam, spec, MNAMELEN); 718 nam[MNAMELEN] = '\0'; 719 if ((delimp = strchr(spec, '@')) != NULL) { 720 hostp = delimp + 1; 721 } else if ((delimp = strrchr(spec, ':')) != NULL) { 722 hostp = spec; 723 spec = delimp + 1; 724 } else { 725 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 726 return (0); 727 } 728 *delimp = '\0'; 729 /* 730 * DUMB!! Until the mount protocol works on iso transport, we must 731 * supply both an iso and an inet address for the host. 732 */ 733 #ifdef ISO 734 if (!strncmp(hostp, "iso=", 4)) { 735 u_short isoport; 736 737 hostp += 4; 738 isoflag++; 739 if ((delimp = strchr(hostp, '+')) == NULL) { 740 warnx("no iso+inet address"); 741 return (0); 742 } 743 *delimp = '\0'; 744 if ((isop = iso_addr(hostp)) == NULL) { 745 warnx("bad ISO address"); 746 return (0); 747 } 748 memset(&isoaddr, 0, sizeof (isoaddr)); 749 memcpy(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 750 isoaddr.siso_len = sizeof (isoaddr); 751 isoaddr.siso_family = AF_ISO; 752 isoaddr.siso_tlen = 2; 753 isoport = htons(NFS_PORT); 754 memcpy(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 755 hostp = delimp + 1; 756 } 757 #endif /* ISO */ 758 759 /* 760 * Handle an internet host address and reverse resolve it if 761 * doing Kerberos. 762 */ 763 memset(&hints, 0, sizeof hints); 764 hints.ai_flags = AI_NUMERICHOST; 765 hints.ai_socktype = nfsargsp->sotype; 766 if (getaddrinfo(hostp, "nfs", &hints, &ai_nfs) == 0) { 767 if ((nfsargsp->flags & NFSMNT_KERB)) { 768 hints.ai_flags = 0; 769 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host, 770 sizeof host, serv, sizeof serv, 0) != 0) { 771 warnx("can't reverse resolve net address for " 772 "host \"%s\": %s", hostp, 773 gai_strerror(ecode)); 774 return (0); 775 } 776 hostp = host; 777 } 778 } else { 779 hints.ai_flags = 0; 780 if ((ecode = getaddrinfo(hostp, "nfs", &hints, &ai_nfs)) != 0) { 781 warnx("can't get net id for host \"%s\": %s", hostp, 782 gai_strerror(ecode)); 783 return (0); 784 } 785 } 786 #ifdef NFSKERB 787 if (nfsargsp->flags & NFSMNT_KERB) { 788 strncpy(inst, hp->h_name, INST_SZ); 789 inst[INST_SZ - 1] = '\0'; 790 if (cp = strchr(inst, '.')) 791 *cp = '\0'; 792 } 793 #endif /* NFSKERB */ 794 795 if (force2) { 796 nfsvers = NFS_VER2; 797 mntvers = RPCMNT_VER1; 798 } else { 799 nfsvers = NFS_VER3; 800 mntvers = RPCMNT_VER3; 801 } 802 orgcnt = retrycnt; 803 nfhret.stat = EACCES; /* Mark not yet successful */ 804 805 for (ai = ai_nfs; ai; ai = ai->ai_next) { 806 /* 807 * XXX. Nead a generic (family, type, proto) -> nconf interface. 808 * __rpc_*2nconf exist, maybe they should be exported. 809 */ 810 if (nfsargsp->sotype == SOCK_STREAM) { 811 if (ai->ai_family == AF_INET6) 812 netid = "tcp6"; 813 else 814 netid = "tcp"; 815 } else { 816 if (ai->ai_family == AF_INET6) 817 netid = "udp6"; 818 else 819 netid = "udp"; 820 } 821 822 nconf = getnetconfigent(netid); 823 824 tryagain: 825 retrycnt = orgcnt; 826 827 while (retrycnt > 0) { 828 nfs_nb.buf = &nfs_ss; 829 nfs_nb.maxlen = sizeof nfs_ss; 830 if (!rpcb_getaddr(RPCPROG_NFS, nfsvers, nconf, &nfs_nb, hostp)){ 831 if (rpc_createerr.cf_stat == RPC_SYSTEMERROR) { 832 nfhret.stat = rpc_createerr.cf_error.re_errno; 833 break; 834 } 835 if (rpc_createerr.cf_stat == RPC_UNKNOWNPROTO) { 836 nfhret.stat = EPROTONOSUPPORT; 837 break; 838 } 839 if ((opflags & ISBGRND) == 0) 840 clnt_pcreateerror( 841 "mount_nfs: rpcbind to nfs on server"); 842 } else { 843 pertry.tv_sec = 10; 844 pertry.tv_usec = 0; 845 /* 846 * XXX relies on clnt_tcp_create to bind to a reserved 847 * socket. 848 */ 849 clp = clnt_tp_create(hostp, RPCPROG_MNT, mntvers, 850 mnttcp_ok ? nconf : getnetconfigent("udp")); 851 if (clp == NULL) { 852 if ((opflags & ISBGRND) == 0) { 853 clnt_pcreateerror( 854 "Cannot MNT RPC (mountd)"); 855 } 856 } else { 857 CLNT_CONTROL(clp, CLSET_RETRY_TIMEOUT, 858 (char *)&pertry); 859 clp->cl_auth = authsys_create_default(); 860 try.tv_sec = 10; 861 try.tv_usec = 0; 862 if (nfsargsp->flags & NFSMNT_KERB) 863 nfhret.auth = RPCAUTH_KERB4; 864 else 865 nfhret.auth = RPCAUTH_UNIX; 866 nfhret.vers = mntvers; 867 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 868 xdr_dir, spec, xdr_fh, &nfhret, try); 869 switch (clnt_stat) { 870 case RPC_PROGVERSMISMATCH: 871 if (nfsvers == NFS_VER3 && !force3) { 872 nfsvers = NFS_VER2; 873 mntvers = RPCMNT_VER1; 874 nfsargsp->flags &= 875 ~NFSMNT_NFSV3; 876 goto tryagain; 877 } else { 878 errx(1, "%s", clnt_sperror(clp, 879 "MNT RPC")); 880 } 881 case RPC_SUCCESS: 882 auth_destroy(clp->cl_auth); 883 clnt_destroy(clp); 884 retrycnt = 0; 885 break; 886 default: 887 /* XXX should give up on some errors */ 888 if ((opflags & ISBGRND) == 0) 889 warnx("%s", clnt_sperror(clp, 890 "bad MNT RPC")); 891 break; 892 } 893 } 894 } 895 if (--retrycnt > 0) { 896 if (opflags & BGRND) { 897 opflags &= ~BGRND; 898 if ((i = fork()) != 0) { 899 if (i == -1) 900 err(1, "nqnfs 2"); 901 exit(0); 902 } 903 (void) setsid(); 904 (void) close(STDIN_FILENO); 905 (void) close(STDOUT_FILENO); 906 (void) close(STDERR_FILENO); 907 (void) chdir("/"); 908 opflags |= ISBGRND; 909 } 910 sleep(60); 911 } 912 } 913 if (nfhret.stat == 0) 914 break; 915 } 916 freeaddrinfo(ai_nfs); 917 if (nfhret.stat) { 918 if (opflags & ISBGRND) 919 exit(1); 920 errno = nfhret.stat; 921 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 922 return (0); 923 } 924 #ifdef ISO 925 if (isoflag) { 926 nfsargsp->addr = (struct sockaddr *) &isoaddr; 927 nfsargsp->addrlen = sizeof (isoaddr); 928 } else 929 #endif /* ISO */ 930 { 931 nfsargsp->addr = (struct sockaddr *) nfs_nb.buf; 932 nfsargsp->addrlen = nfs_nb.len; 933 if (port != 0) { 934 struct sockaddr *sa = nfsargsp->addr; 935 switch (sa->sa_family) { 936 case AF_INET: 937 ((struct sockaddr_in *)sa)->sin_port = port; 938 #ifdef INET6 939 case AF_INET6: 940 ((struct sockaddr_in6 *)sa)->sin6_port = port; 941 break; 942 #endif 943 default: 944 errx(1, "Unsupported socket family %d", 945 sa->sa_family); 946 } 947 } 948 } 949 nfsargsp->fh = nfhret.nfh; 950 nfsargsp->fhsize = nfhret.fhsize; 951 nfsargsp->hostname = nam; 952 return (1); 953 } 954 955 /* 956 * xdr routines for mount rpc's 957 */ 958 static int 959 xdr_dir(xdrsp, dirp) 960 XDR *xdrsp; 961 char *dirp; 962 { 963 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 964 } 965 966 static int 967 xdr_fh(xdrsp, np) 968 XDR *xdrsp; 969 struct nfhret *np; 970 { 971 int i; 972 long auth, authcnt, authfnd = 0; 973 974 if (!xdr_u_long(xdrsp, &np->stat)) 975 return (0); 976 if (np->stat) 977 return (1); 978 switch (np->vers) { 979 case 1: 980 np->fhsize = NFSX_V2FH; 981 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 982 case 3: 983 if (!xdr_long(xdrsp, &np->fhsize)) 984 return (0); 985 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 986 return (0); 987 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 988 return (0); 989 if (!xdr_long(xdrsp, &authcnt)) 990 return (0); 991 for (i = 0; i < authcnt; i++) { 992 if (!xdr_long(xdrsp, &auth)) 993 return (0); 994 if (auth == np->auth) 995 authfnd++; 996 } 997 /* 998 * Some servers, such as DEC's OSF/1 return a nil authenticator 999 * list to indicate RPCAUTH_UNIX. 1000 */ 1001 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 1002 np->stat = EAUTH; 1003 return (1); 1004 }; 1005 return (0); 1006 } 1007 1008 static void 1009 usage() 1010 { 1011 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n%s\n", 1012 "[-23bcCdiKlpPqsTUX] [-a maxreadahead] [-D deadthresh]", 1013 "\t[-g maxgroups] [-I readdirsize] [-L leaseterm] [-m realm]", 1014 "\t[-o options] [-R retrycnt] [-r readsize] [-t timeout]", 1015 "\t[-w writesize] [-x retrans]", 1016 "\trhost:path node"); 1017 exit(1); 1018 } 1019
Indexes created Tue Sep 30 06:09:59 GMT 2025