mount_nfs.c revision 1.32
1 /* $NetBSD: mount_nfs.c,v 1.32 2002/05/29 02:19:56 cjs 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 1.32 2002/05/29 02:19:56 cjs 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 #define _KERNEL 75 #include <nfs/nfs.h> 76 #undef _KERNEL 77 #include <nfs/nqnfs.h> 78 #include <nfs/nfsmount.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 <string.h> 91 #include <unistd.h> 92 93 #include "mntopts.h" 94 95 #define ALTF_BG 0x1 96 #define ALTF_CONN 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_NORESPORT 0x100 104 #define ALTF_SEQPACKET 0x200 105 #define ALTF_NQNFS 0x400 106 #define ALTF_SOFT 0x800 107 #define ALTF_TCP 0x1000 108 #define ALTF_NFSV2 0x2000 109 110 static const struct mntopt mopts[] = { 111 MOPT_STDOPTS, 112 MOPT_FORCE, 113 MOPT_UPDATE, 114 { "bg", 0, ALTF_BG, 1 }, 115 { "conn", 0, ALTF_CONN, 1 }, 116 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 117 { "intr", 0, ALTF_INTR, 1 }, 118 #ifdef NFSKERB 119 { "kerb", 0, ALTF_KERB, 1 }, 120 #endif 121 { "nfsv3", 0, ALTF_NFSV3, 1 }, 122 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 123 { "mntudp", 0, ALTF_MNTUDP, 1 }, 124 { "noresport", 0, ALTF_NORESPORT, 1 }, 125 #ifdef ISO 126 { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 127 #endif 128 { "nqnfs", 0, ALTF_NQNFS, 1 }, 129 { "soft", 0, ALTF_SOFT, 1 }, 130 { "tcp", 0, ALTF_TCP, 1 }, 131 { "nfsv2", 0, ALTF_NFSV2, 1 }, 132 { NULL } 133 }; 134 135 struct nfs_args nfsdefargs = { 136 NFS_ARGSVERSION, 137 (struct sockaddr *)0, 138 sizeof (struct sockaddr_in), 139 SOCK_DGRAM, 140 0, 141 (u_char *)0, 142 0, 143 NFSMNT_NFSV3|NFSMNT_NOCONN|NFSMNT_RESVPORT, 144 NFS_WSIZE, 145 NFS_RSIZE, 146 NFS_READDIRSIZE, 147 10, 148 NFS_RETRANS, 149 NFS_MAXGRPS, 150 NFS_DEFRAHEAD, 151 NQ_DEFLEASE, 152 NQ_DEADTHRESH, 153 (char *)0, 154 }; 155 156 struct nfhret { 157 u_long stat; 158 long vers; 159 long auth; 160 long fhsize; 161 u_char nfh[NFSX_V3FHMAX]; 162 }; 163 #define DEF_RETRY 10000 164 #define BGRND 1 165 #define ISBGRND 2 166 int retrycnt; 167 int opflags = 0; 168 int nfsproto = IPPROTO_UDP; 169 int force2 = 0; 170 int force3 = 0; 171 int mnttcp_ok = 1; 172 173 #ifdef NFSKERB 174 static char inst[INST_SZ]; 175 static char realm[REALM_SZ]; 176 static struct { 177 u_long kind; 178 KTEXT_ST kt; 179 } ktick; 180 static struct nfsrpc_nickverf kverf; 181 static struct nfsrpc_fullblock kin, kout; 182 static NFSKERBKEY_T kivec; 183 static CREDENTIALS kcr; 184 static struct timeval ktv; 185 static NFSKERBKEYSCHED_T kerb_keysched; 186 #endif 187 188 static int getnfsargs __P((char *, struct nfs_args *)); 189 #ifdef ISO 190 static struct iso_addr *iso_addr __P((const char *)); 191 #endif 192 int main __P((int, char *[])); 193 int mount_nfs __P((int argc, char **argv)); 194 /* void set_rpc_maxgrouplist __P((int)); */ 195 static void usage __P((void)); 196 static int xdr_dir __P((XDR *, char *)); 197 static int xdr_fh __P((XDR *, struct nfhret *)); 198 199 #ifndef MOUNT_NOMAIN 200 int 201 main(argc, argv) 202 int argc; 203 char **argv; 204 { 205 return mount_nfs(argc, argv); 206 } 207 #endif 208 209 int 210 mount_nfs(argc, argv) 211 int argc; 212 char *argv[]; 213 { 214 int c; 215 struct nfs_args *nfsargsp; 216 struct nfs_args nfsargs; 217 struct nfsd_cargs ncd; 218 int mntflags, altflags, i, nfssvc_flag, num; 219 char *name, *p, *spec, *ospec; 220 #ifdef NFSKERB 221 uid_t last_ruid; 222 223 last_ruid = -1; 224 if (krb_get_lrealm(realm, 0) != KSUCCESS) 225 (void)strcpy(realm, KRB_REALM); 226 if (sizeof (struct nfsrpc_nickverf) != RPCX_NICKVERF || 227 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK || 228 ((char *)&ktick.kt) - ((char *)&ktick) != NFSX_UNSIGNED || 229 ((char *)ktick.kt.dat) - ((char *)&ktick) != 2 * NFSX_UNSIGNED) 230 fprintf(stderr, "Yikes! NFSKERB structs not packed!!\n"); 231 232 #endif 233 retrycnt = DEF_RETRY; 234 235 mntflags = 0; 236 altflags = 0; 237 nfsargs = nfsdefargs; 238 nfsargsp = &nfsargs; 239 while ((c = getopt(argc, argv, 240 "23a:bcCdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:UX")) != -1) 241 switch (c) { 242 case '3': 243 if (force2) 244 errx(1, "-2 and -3 are mutually exclusive"); 245 force3 = 1; 246 break; 247 case '2': 248 if (force3) 249 errx(1, "-2 and -3 are mutually exclusive"); 250 force2 = 1; 251 nfsargsp->flags &= ~NFSMNT_NFSV3; 252 break; 253 case 'a': 254 num = strtol(optarg, &p, 10); 255 if (*p || num < 0) 256 errx(1, "illegal -a value -- %s", optarg); 257 nfsargsp->readahead = num; 258 nfsargsp->flags |= NFSMNT_READAHEAD; 259 break; 260 case 'b': 261 opflags |= BGRND; 262 break; 263 case 'c': 264 nfsargsp->flags |= NFSMNT_NOCONN; 265 break; 266 case 'C': 267 nfsargsp->flags &= ~NFSMNT_NOCONN; 268 break; 269 case 'D': 270 num = strtol(optarg, &p, 10); 271 if (*p || num <= 0) 272 errx(1, "illegal -D value -- %s", optarg); 273 nfsargsp->deadthresh = num; 274 nfsargsp->flags |= NFSMNT_DEADTHRESH; 275 break; 276 case 'd': 277 nfsargsp->flags |= NFSMNT_DUMBTIMR; 278 break; 279 #if 0 /* XXXX */ 280 case 'g': 281 num = strtol(optarg, &p, 10); 282 if (*p || num <= 0) 283 errx(1, "illegal -g value -- %s", optarg); 284 set_rpc_maxgrouplist(num); 285 nfsargsp->maxgrouplist = num; 286 nfsargsp->flags |= NFSMNT_MAXGRPS; 287 break; 288 #endif 289 case 'I': 290 num = strtol(optarg, &p, 10); 291 if (*p || num <= 0) 292 errx(1, "illegal -I value -- %s", optarg); 293 nfsargsp->readdirsize = num; 294 nfsargsp->flags |= NFSMNT_READDIRSIZE; 295 break; 296 case 'i': 297 nfsargsp->flags |= NFSMNT_INT; 298 break; 299 #ifdef NFSKERB 300 case 'K': 301 nfsargsp->flags |= NFSMNT_KERB; 302 break; 303 #endif 304 case 'L': 305 num = strtol(optarg, &p, 10); 306 if (*p || num < 2) 307 errx(1, "illegal -L value -- %s", optarg); 308 nfsargsp->leaseterm = num; 309 nfsargsp->flags |= NFSMNT_LEASETERM; 310 break; 311 case 'l': 312 nfsargsp->flags |= NFSMNT_RDIRPLUS; 313 break; 314 #ifdef NFSKERB 315 case 'm': 316 (void)strncpy(realm, optarg, REALM_SZ - 1); 317 realm[REALM_SZ - 1] = '\0'; 318 break; 319 #endif 320 case 'o': 321 getmntopts(optarg, mopts, &mntflags, &altflags); 322 if(altflags & ALTF_BG) 323 opflags |= BGRND; 324 if(altflags & ALTF_CONN) 325 nfsargsp->flags &= ~NFSMNT_NOCONN; 326 if(altflags & ALTF_DUMBTIMR) 327 nfsargsp->flags |= NFSMNT_DUMBTIMR; 328 if(altflags & ALTF_INTR) 329 nfsargsp->flags |= NFSMNT_INT; 330 #ifdef NFSKERB 331 if(altflags & ALTF_KERB) 332 nfsargsp->flags |= NFSMNT_KERB; 333 #endif 334 if(altflags & ALTF_NFSV3) { 335 if (force2) 336 errx(1,"conflicting version options"); 337 force3 = 1; 338 } 339 if(altflags & ALTF_NFSV2) { 340 if (force3) 341 errx(1,"conflicting version options"); 342 force2 = 1; 343 nfsargsp->flags &= ~NFSMNT_NFSV3; 344 } 345 if(altflags & ALTF_RDIRPLUS) 346 nfsargsp->flags |= NFSMNT_RDIRPLUS; 347 if(altflags & ALTF_MNTUDP) 348 mnttcp_ok = 0; 349 if(altflags & ALTF_NORESPORT) 350 nfsargsp->flags &= ~NFSMNT_RESVPORT; 351 #ifdef ISO 352 if(altflags & ALTF_SEQPACKET) 353 nfsargsp->sotype = SOCK_SEQPACKET; 354 #endif 355 if(altflags & ALTF_NQNFS) { 356 if (force2) 357 errx(1,"nqnfs only available with v3"); 358 force3 = 1; 359 nfsargsp->flags |= NFSMNT_NQNFS; 360 } 361 if(altflags & ALTF_SOFT) 362 nfsargsp->flags |= NFSMNT_SOFT; 363 if(altflags & ALTF_TCP) { 364 nfsargsp->sotype = SOCK_STREAM; 365 nfsproto = IPPROTO_TCP; 366 } 367 altflags = 0; 368 break; 369 case 'P': 370 nfsargsp->flags |= NFSMNT_RESVPORT; 371 break; 372 case 'p': 373 nfsargsp->flags &= ~NFSMNT_RESVPORT; 374 break; 375 case 'q': 376 if (force2) 377 errx(1,"nqnfs only available with v3"); 378 force3 = 1; 379 nfsargsp->flags |= NFSMNT_NQNFS; 380 break; 381 case 'R': 382 num = strtol(optarg, &p, 10); 383 if (*p || num <= 0) 384 errx(1, "illegal -R value -- %s", optarg); 385 retrycnt = num; 386 break; 387 case 'r': 388 num = strtol(optarg, &p, 10); 389 if (*p || num <= 0) 390 errx(1, "illegal -r value -- %s", optarg); 391 nfsargsp->rsize = num; 392 nfsargsp->flags |= NFSMNT_RSIZE; 393 break; 394 #ifdef ISO 395 case 'S': 396 nfsargsp->sotype = SOCK_SEQPACKET; 397 break; 398 #endif 399 case 's': 400 nfsargsp->flags |= NFSMNT_SOFT; 401 break; 402 case 'T': 403 nfsargsp->sotype = SOCK_STREAM; 404 nfsproto = IPPROTO_TCP; 405 break; 406 case 't': 407 num = strtol(optarg, &p, 10); 408 if (*p || num <= 0) 409 errx(1, "illegal -t value -- %s", optarg); 410 nfsargsp->timeo = num; 411 nfsargsp->flags |= NFSMNT_TIMEO; 412 break; 413 case 'w': 414 num = strtol(optarg, &p, 10); 415 if (*p || num <= 0) 416 errx(1, "illegal -w value -- %s", optarg); 417 nfsargsp->wsize = num; 418 nfsargsp->flags |= NFSMNT_WSIZE; 419 break; 420 case 'x': 421 num = strtol(optarg, &p, 10); 422 if (*p || num <= 0) 423 errx(1, "illegal -x value -- %s", optarg); 424 nfsargsp->retrans = num; 425 nfsargsp->flags |= NFSMNT_RETRANS; 426 break; 427 case 'X': 428 nfsargsp->flags |= NFSMNT_XLATECOOKIE; 429 break; 430 case 'U': 431 mnttcp_ok = 0; 432 break; 433 default: 434 usage(); 435 break; 436 } 437 argc -= optind; 438 argv += optind; 439 440 if (argc != 2) 441 usage(); 442 443 spec = *argv++; 444 name = *argv; 445 if((ospec = strdup(spec))==NULL) { 446 err(1,"strdup"); 447 } 448 449 if (!getnfsargs(spec, nfsargsp)) 450 exit(1); 451 if (mount(MOUNT_NFS, name, mntflags, nfsargsp)) 452 err(1, "%s on %s", ospec, name); 453 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 454 if ((opflags & ISBGRND) == 0) { 455 if ((i = fork()) != 0) { 456 if (i == -1) 457 err(1, "nqnfs 1"); 458 exit(0); 459 } 460 (void) setsid(); 461 (void) close(STDIN_FILENO); 462 (void) close(STDOUT_FILENO); 463 (void) close(STDERR_FILENO); 464 (void) chdir("/"); 465 } 466 openlog("mount_nfs", LOG_PID, LOG_DAEMON); 467 nfssvc_flag = NFSSVC_MNTD; 468 ncd.ncd_dirp = name; 469 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 470 if (errno != ENEEDAUTH) { 471 syslog(LOG_ERR, "nfssvc err %m"); 472 continue; 473 } 474 nfssvc_flag = 475 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 476 #ifdef NFSKERB 477 /* 478 * Set up as ncd_authuid for the kerberos call. 479 * Must set ruid to ncd_authuid and reset the 480 * ticket name iff ncd_authuid is not the same 481 * as last time, so that the right ticket file 482 * is found. 483 * Get the Kerberos credential structure so that 484 * we have the seesion key and get a ticket for 485 * this uid. 486 * For more info see the IETF Draft "Authentication 487 * in ONC RPC". 488 */ 489 if (ncd.ncd_authuid != last_ruid) { 490 krb_set_tkt_string(""); 491 last_ruid = ncd.ncd_authuid; 492 } 493 setreuid(ncd.ncd_authuid, 0); 494 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 495 if (kret == RET_NOTKT) { 496 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 497 DEFAULT_TKT_LIFE); 498 if (kret == KSUCCESS) 499 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 500 &kcr); 501 } 502 if (kret == KSUCCESS) 503 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 504 realm, 0); 505 506 /* 507 * Fill in the AKN_FULLNAME authenticator and verfier. 508 * Along with the Kerberos ticket, we need to build 509 * the timestamp verifier and encrypt it in CBC mode. 510 */ 511 if (kret == KSUCCESS && 512 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 513 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 514 ncd.ncd_authtype = RPCAUTH_KERB4; 515 ncd.ncd_authstr = (u_char *)&ktick; 516 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 517 3 * NFSX_UNSIGNED; 518 ncd.ncd_verfstr = (u_char *)&kverf; 519 ncd.ncd_verflen = sizeof (kverf); 520 memmove(ncd.ncd_key, kcr.session, 521 sizeof (kcr.session)); 522 kin.t1 = htonl(ktv.tv_sec); 523 kin.t2 = htonl(ktv.tv_usec); 524 kin.w1 = htonl(NFS_KERBTTL); 525 kin.w2 = htonl(NFS_KERBTTL - 1); 526 memset((caddr_t)kivec, 0, sizeof (kivec)); 527 528 /* 529 * Encrypt kin in CBC mode using the session 530 * key in kcr. 531 */ 532 XXX 533 534 /* 535 * Finally, fill the timestamp verifier into the 536 * authenticator and verifier. 537 */ 538 ktick.kind = htonl(RPCAKN_FULLNAME); 539 kverf.kind = htonl(RPCAKN_FULLNAME); 540 NFS_KERBW1(ktick.kt) = kout.w1; 541 ktick.kt.length = htonl(ktick.kt.length); 542 kverf.verf.t1 = kout.t1; 543 kverf.verf.t2 = kout.t2; 544 kverf.verf.w2 = kout.w2; 545 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 546 } 547 setreuid(0, 0); 548 #endif /* NFSKERB */ 549 } 550 } 551 exit(0); 552 } 553 554 static int 555 getnfsargs(spec, nfsargsp) 556 char *spec; 557 struct nfs_args *nfsargsp; 558 { 559 CLIENT *clp; 560 struct addrinfo hints, *ai_nfs, *ai; 561 int ecode; 562 char host[NI_MAXHOST], serv[NI_MAXSERV]; 563 static struct netbuf nfs_nb; 564 static struct sockaddr_storage nfs_ss; 565 struct netconfig *nconf; 566 char *netid; 567 #ifdef ISO 568 static struct sockaddr_iso isoaddr; 569 struct iso_addr *isop; 570 int isoflag = 0; 571 #endif 572 struct timeval pertry, try; 573 enum clnt_stat clnt_stat; 574 int i, nfsvers, mntvers, orgcnt; 575 char *hostp, *delimp; 576 #ifdef NFSKERB 577 char *cp; 578 #endif 579 static struct nfhret nfhret; 580 static char nam[MNAMELEN + 1]; 581 582 strncpy(nam, spec, MNAMELEN); 583 nam[MNAMELEN] = '\0'; 584 if ((delimp = strchr(spec, '@')) != NULL) { 585 hostp = delimp + 1; 586 } else if ((delimp = strrchr(spec, ':')) != NULL) { 587 hostp = spec; 588 spec = delimp + 1; 589 } else { 590 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 591 return (0); 592 } 593 *delimp = '\0'; 594 /* 595 * DUMB!! Until the mount protocol works on iso transport, we must 596 * supply both an iso and an inet address for the host. 597 */ 598 #ifdef ISO 599 if (!strncmp(hostp, "iso=", 4)) { 600 u_short isoport; 601 602 hostp += 4; 603 isoflag++; 604 if ((delimp = strchr(hostp, '+')) == NULL) { 605 warnx("no iso+inet address"); 606 return (0); 607 } 608 *delimp = '\0'; 609 if ((isop = iso_addr(hostp)) == NULL) { 610 warnx("bad ISO address"); 611 return (0); 612 } 613 memset(&isoaddr, 0, sizeof (isoaddr)); 614 memcpy(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 615 isoaddr.siso_len = sizeof (isoaddr); 616 isoaddr.siso_family = AF_ISO; 617 isoaddr.siso_tlen = 2; 618 isoport = htons(NFS_PORT); 619 memcpy(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 620 hostp = delimp + 1; 621 } 622 #endif /* ISO */ 623 624 /* 625 * Handle an internet host address and reverse resolve it if 626 * doing Kerberos. 627 */ 628 memset(&hints, 0, sizeof hints); 629 hints.ai_flags = AI_NUMERICHOST; 630 hints.ai_socktype = nfsargsp->sotype; 631 if (getaddrinfo(hostp, "nfs", &hints, &ai_nfs) == 0) { 632 if ((nfsargsp->flags & NFSMNT_KERB)) { 633 hints.ai_flags = 0; 634 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host, 635 sizeof host, serv, sizeof serv, 0) != 0) { 636 warnx("can't reverse resolve net address for " 637 "host \"%s\": %s", hostp, 638 gai_strerror(ecode)); 639 return (0); 640 } 641 hostp = host; 642 } 643 } else { 644 hints.ai_flags = 0; 645 if ((ecode = getaddrinfo(hostp, "nfs", &hints, &ai_nfs)) != 0) { 646 warnx("can't get net id for host \"%s\": %s", hostp, 647 gai_strerror(ecode)); 648 return (0); 649 } 650 } 651 #ifdef NFSKERB 652 if (nfsargsp->flags & NFSMNT_KERB) { 653 strncpy(inst, hp->h_name, INST_SZ); 654 inst[INST_SZ - 1] = '\0'; 655 if (cp = strchr(inst, '.')) 656 *cp = '\0'; 657 } 658 #endif /* NFSKERB */ 659 660 if (force2) { 661 nfsvers = NFS_VER2; 662 mntvers = RPCMNT_VER1; 663 } else { 664 nfsvers = NFS_VER3; 665 mntvers = RPCMNT_VER3; 666 } 667 orgcnt = retrycnt; 668 nfhret.stat = EACCES; /* Mark not yet successful */ 669 670 ai = ai_nfs; 671 while (ai != NULL) { 672 /* 673 * XXX. Nead a generic (family, type, proto) -> nconf interface. 674 * __rpc_*2nconf exist, maybe they should be exported. 675 */ 676 if (nfsargsp->sotype == SOCK_STREAM) { 677 if (ai->ai_family == AF_INET6) 678 netid = "tcp6"; 679 else 680 netid = "tcp"; 681 } else { 682 if (ai->ai_family == AF_INET6) 683 netid = "udp6"; 684 else 685 netid = "udp"; 686 } 687 688 nconf = getnetconfigent(netid); 689 690 tryagain: 691 retrycnt = orgcnt; 692 693 while (retrycnt > 0) { 694 nfs_nb.buf = &nfs_ss; 695 nfs_nb.maxlen = sizeof nfs_ss; 696 if (!rpcb_getaddr(RPCPROG_NFS, nfsvers, nconf, &nfs_nb, hostp)){ 697 if (rpc_createerr.cf_stat == RPC_SYSTEMERROR) { 698 nfhret.stat = rpc_createerr.cf_error.re_errno; 699 break; 700 } 701 if (rpc_createerr.cf_stat == RPC_UNKNOWNPROTO) { 702 nfhret.stat = EPROTONOSUPPORT; 703 break; 704 } 705 if ((opflags & ISBGRND) == 0) 706 clnt_pcreateerror( 707 "mount_nfs: rpcbind to nfs on server"); 708 } else { 709 pertry.tv_sec = 10; 710 pertry.tv_usec = 0; 711 /* 712 * XXX relies on clnt_tcp_create to bind to a reserved 713 * socket. 714 */ 715 clp = clnt_tp_create(hostp, RPCPROG_MNT, mntvers, 716 mnttcp_ok ? nconf : getnetconfigent("udp")); 717 if (clp == NULL) { 718 if ((opflags & ISBGRND) == 0) { 719 clnt_pcreateerror( 720 "Cannot MNT RPC (mountd)"); 721 } 722 } else { 723 CLNT_CONTROL(clp, CLSET_RETRY_TIMEOUT, 724 (char *)&pertry); 725 clp->cl_auth = authsys_create_default(); 726 try.tv_sec = 10; 727 try.tv_usec = 0; 728 if (nfsargsp->flags & NFSMNT_KERB) 729 nfhret.auth = RPCAUTH_KERB4; 730 else 731 nfhret.auth = RPCAUTH_UNIX; 732 nfhret.vers = mntvers; 733 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 734 xdr_dir, spec, xdr_fh, &nfhret, try); 735 switch (clnt_stat) { 736 case RPC_PROGVERSMISMATCH: 737 if (nfsvers == NFS_VER3 && !force3) { 738 nfsvers = NFS_VER2; 739 mntvers = RPCMNT_VER1; 740 nfsargsp->flags &= 741 ~NFSMNT_NFSV3; 742 goto tryagain; 743 } else { 744 errx(1, "%s", clnt_sperror(clp, 745 "MNT RPC")); 746 } 747 case RPC_SUCCESS: 748 auth_destroy(clp->cl_auth); 749 clnt_destroy(clp); 750 retrycnt = 0; 751 break; 752 default: 753 /* XXX should give up on some errors */ 754 if ((opflags & ISBGRND) == 0) 755 warnx("%s", clnt_sperror(clp, 756 "bad MNT RPC")); 757 break; 758 } 759 } 760 } 761 if (--retrycnt > 0) { 762 if (opflags & BGRND) { 763 opflags &= ~BGRND; 764 if ((i = fork()) != 0) { 765 if (i == -1) 766 err(1, "nqnfs 2"); 767 exit(0); 768 } 769 (void) setsid(); 770 (void) close(STDIN_FILENO); 771 (void) close(STDOUT_FILENO); 772 (void) close(STDERR_FILENO); 773 (void) chdir("/"); 774 opflags |= ISBGRND; 775 } 776 sleep(60); 777 } 778 } 779 if (nfhret.stat == 0) 780 break; 781 ai = ai->ai_next; 782 } 783 freeaddrinfo(ai_nfs); 784 if (nfhret.stat) { 785 if (opflags & ISBGRND) 786 exit(1); 787 errno = nfhret.stat; 788 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 789 return (0); 790 } 791 #ifdef ISO 792 if (isoflag) { 793 nfsargsp->addr = (struct sockaddr *) &isoaddr; 794 nfsargsp->addrlen = sizeof (isoaddr); 795 } else 796 #endif /* ISO */ 797 { 798 nfsargsp->addr = (struct sockaddr *) nfs_nb.buf; 799 nfsargsp->addrlen = nfs_nb.len; 800 } 801 nfsargsp->fh = nfhret.nfh; 802 nfsargsp->fhsize = nfhret.fhsize; 803 nfsargsp->hostname = nam; 804 return (1); 805 } 806 807 /* 808 * xdr routines for mount rpc's 809 */ 810 static int 811 xdr_dir(xdrsp, dirp) 812 XDR *xdrsp; 813 char *dirp; 814 { 815 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 816 } 817 818 static int 819 xdr_fh(xdrsp, np) 820 XDR *xdrsp; 821 struct nfhret *np; 822 { 823 int i; 824 long auth, authcnt, authfnd = 0; 825 826 if (!xdr_u_long(xdrsp, &np->stat)) 827 return (0); 828 if (np->stat) 829 return (1); 830 switch (np->vers) { 831 case 1: 832 np->fhsize = NFSX_V2FH; 833 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 834 case 3: 835 if (!xdr_long(xdrsp, &np->fhsize)) 836 return (0); 837 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 838 return (0); 839 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 840 return (0); 841 if (!xdr_long(xdrsp, &authcnt)) 842 return (0); 843 for (i = 0; i < authcnt; i++) { 844 if (!xdr_long(xdrsp, &auth)) 845 return (0); 846 if (auth == np->auth) 847 authfnd++; 848 } 849 /* 850 * Some servers, such as DEC's OSF/1 return a nil authenticator 851 * list to indicate RPCAUTH_UNIX. 852 */ 853 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 854 np->stat = EAUTH; 855 return (1); 856 }; 857 return (0); 858 } 859 860 static void 861 usage() 862 { 863 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n%s\n", 864 "[-23bcCdiKlpPqsTUX] [-a maxreadahead] [-D deadthresh]", 865 "\t[-g maxgroups] [-I readdirsize] [-L leaseterm] [-m realm]", 866 "\t[-o options] [-R retrycnt] [-r readsize] [-t timeout]", 867 "\t[-w writesize] [-x retrans]", 868 "\trhost:path node"); 869 exit(1); 870 } 871
Indexes created Tue Sep 30 11:09:46 GMT 2025