mount_nfs.c revision 1.33
1 /* $NetBSD: mount_nfs.c,v 1.33 2002/06/16 02:27:31 wrstuden 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 1.33 2002/06/16 02:27:31 wrstuden 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, retval; 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 ((retval = mount(MOUNT_NFS, name, mntflags, nfsargsp))) { 452 /* Did we just default to v3 on a v2-only kernel? 453 * If so, default to v2 & try again */ 454 if ((errno == EPROGMISMATCH) && !force3) { 455 nfsargsp->flags &= ~NFSMNT_NFSV3; 456 retval = mount(MOUNT_NFS, name, mntflags, nfsargsp); 457 } 458 } 459 if (retval) 460 err(1, "%s on %s", ospec, name); 461 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 462 if ((opflags & ISBGRND) == 0) { 463 if ((i = fork()) != 0) { 464 if (i == -1) 465 err(1, "nqnfs 1"); 466 exit(0); 467 } 468 (void) setsid(); 469 (void) close(STDIN_FILENO); 470 (void) close(STDOUT_FILENO); 471 (void) close(STDERR_FILENO); 472 (void) chdir("/"); 473 } 474 openlog("mount_nfs", LOG_PID, LOG_DAEMON); 475 nfssvc_flag = NFSSVC_MNTD; 476 ncd.ncd_dirp = name; 477 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 478 if (errno != ENEEDAUTH) { 479 syslog(LOG_ERR, "nfssvc err %m"); 480 continue; 481 } 482 nfssvc_flag = 483 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 484 #ifdef NFSKERB 485 /* 486 * Set up as ncd_authuid for the kerberos call. 487 * Must set ruid to ncd_authuid and reset the 488 * ticket name iff ncd_authuid is not the same 489 * as last time, so that the right ticket file 490 * is found. 491 * Get the Kerberos credential structure so that 492 * we have the seesion key and get a ticket for 493 * this uid. 494 * For more info see the IETF Draft "Authentication 495 * in ONC RPC". 496 */ 497 if (ncd.ncd_authuid != last_ruid) { 498 krb_set_tkt_string(""); 499 last_ruid = ncd.ncd_authuid; 500 } 501 setreuid(ncd.ncd_authuid, 0); 502 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 503 if (kret == RET_NOTKT) { 504 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 505 DEFAULT_TKT_LIFE); 506 if (kret == KSUCCESS) 507 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 508 &kcr); 509 } 510 if (kret == KSUCCESS) 511 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 512 realm, 0); 513 514 /* 515 * Fill in the AKN_FULLNAME authenticator and verfier. 516 * Along with the Kerberos ticket, we need to build 517 * the timestamp verifier and encrypt it in CBC mode. 518 */ 519 if (kret == KSUCCESS && 520 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 521 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 522 ncd.ncd_authtype = RPCAUTH_KERB4; 523 ncd.ncd_authstr = (u_char *)&ktick; 524 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 525 3 * NFSX_UNSIGNED; 526 ncd.ncd_verfstr = (u_char *)&kverf; 527 ncd.ncd_verflen = sizeof (kverf); 528 memmove(ncd.ncd_key, kcr.session, 529 sizeof (kcr.session)); 530 kin.t1 = htonl(ktv.tv_sec); 531 kin.t2 = htonl(ktv.tv_usec); 532 kin.w1 = htonl(NFS_KERBTTL); 533 kin.w2 = htonl(NFS_KERBTTL - 1); 534 memset((caddr_t)kivec, 0, sizeof (kivec)); 535 536 /* 537 * Encrypt kin in CBC mode using the session 538 * key in kcr. 539 */ 540 XXX 541 542 /* 543 * Finally, fill the timestamp verifier into the 544 * authenticator and verifier. 545 */ 546 ktick.kind = htonl(RPCAKN_FULLNAME); 547 kverf.kind = htonl(RPCAKN_FULLNAME); 548 NFS_KERBW1(ktick.kt) = kout.w1; 549 ktick.kt.length = htonl(ktick.kt.length); 550 kverf.verf.t1 = kout.t1; 551 kverf.verf.t2 = kout.t2; 552 kverf.verf.w2 = kout.w2; 553 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 554 } 555 setreuid(0, 0); 556 #endif /* NFSKERB */ 557 } 558 } 559 exit(0); 560 } 561 562 static int 563 getnfsargs(spec, nfsargsp) 564 char *spec; 565 struct nfs_args *nfsargsp; 566 { 567 CLIENT *clp; 568 struct addrinfo hints, *ai_nfs, *ai; 569 int ecode; 570 char host[NI_MAXHOST], serv[NI_MAXSERV]; 571 static struct netbuf nfs_nb; 572 static struct sockaddr_storage nfs_ss; 573 struct netconfig *nconf; 574 char *netid; 575 #ifdef ISO 576 static struct sockaddr_iso isoaddr; 577 struct iso_addr *isop; 578 int isoflag = 0; 579 #endif 580 struct timeval pertry, try; 581 enum clnt_stat clnt_stat; 582 int i, nfsvers, mntvers, orgcnt; 583 char *hostp, *delimp; 584 #ifdef NFSKERB 585 char *cp; 586 #endif 587 static struct nfhret nfhret; 588 static char nam[MNAMELEN + 1]; 589 590 strncpy(nam, spec, MNAMELEN); 591 nam[MNAMELEN] = '\0'; 592 if ((delimp = strchr(spec, '@')) != NULL) { 593 hostp = delimp + 1; 594 } else if ((delimp = strrchr(spec, ':')) != NULL) { 595 hostp = spec; 596 spec = delimp + 1; 597 } else { 598 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 599 return (0); 600 } 601 *delimp = '\0'; 602 /* 603 * DUMB!! Until the mount protocol works on iso transport, we must 604 * supply both an iso and an inet address for the host. 605 */ 606 #ifdef ISO 607 if (!strncmp(hostp, "iso=", 4)) { 608 u_short isoport; 609 610 hostp += 4; 611 isoflag++; 612 if ((delimp = strchr(hostp, '+')) == NULL) { 613 warnx("no iso+inet address"); 614 return (0); 615 } 616 *delimp = '\0'; 617 if ((isop = iso_addr(hostp)) == NULL) { 618 warnx("bad ISO address"); 619 return (0); 620 } 621 memset(&isoaddr, 0, sizeof (isoaddr)); 622 memcpy(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 623 isoaddr.siso_len = sizeof (isoaddr); 624 isoaddr.siso_family = AF_ISO; 625 isoaddr.siso_tlen = 2; 626 isoport = htons(NFS_PORT); 627 memcpy(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 628 hostp = delimp + 1; 629 } 630 #endif /* ISO */ 631 632 /* 633 * Handle an internet host address and reverse resolve it if 634 * doing Kerberos. 635 */ 636 memset(&hints, 0, sizeof hints); 637 hints.ai_flags = AI_NUMERICHOST; 638 hints.ai_socktype = nfsargsp->sotype; 639 if (getaddrinfo(hostp, "nfs", &hints, &ai_nfs) == 0) { 640 if ((nfsargsp->flags & NFSMNT_KERB)) { 641 hints.ai_flags = 0; 642 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host, 643 sizeof host, serv, sizeof serv, 0) != 0) { 644 warnx("can't reverse resolve net address for " 645 "host \"%s\": %s", hostp, 646 gai_strerror(ecode)); 647 return (0); 648 } 649 hostp = host; 650 } 651 } else { 652 hints.ai_flags = 0; 653 if ((ecode = getaddrinfo(hostp, "nfs", &hints, &ai_nfs)) != 0) { 654 warnx("can't get net id for host \"%s\": %s", hostp, 655 gai_strerror(ecode)); 656 return (0); 657 } 658 } 659 #ifdef NFSKERB 660 if (nfsargsp->flags & NFSMNT_KERB) { 661 strncpy(inst, hp->h_name, INST_SZ); 662 inst[INST_SZ - 1] = '\0'; 663 if (cp = strchr(inst, '.')) 664 *cp = '\0'; 665 } 666 #endif /* NFSKERB */ 667 668 if (force2) { 669 nfsvers = NFS_VER2; 670 mntvers = RPCMNT_VER1; 671 } else { 672 nfsvers = NFS_VER3; 673 mntvers = RPCMNT_VER3; 674 } 675 orgcnt = retrycnt; 676 nfhret.stat = EACCES; /* Mark not yet successful */ 677 678 ai = ai_nfs; 679 while (ai != NULL) { 680 /* 681 * XXX. Nead a generic (family, type, proto) -> nconf interface. 682 * __rpc_*2nconf exist, maybe they should be exported. 683 */ 684 if (nfsargsp->sotype == SOCK_STREAM) { 685 if (ai->ai_family == AF_INET6) 686 netid = "tcp6"; 687 else 688 netid = "tcp"; 689 } else { 690 if (ai->ai_family == AF_INET6) 691 netid = "udp6"; 692 else 693 netid = "udp"; 694 } 695 696 nconf = getnetconfigent(netid); 697 698 tryagain: 699 retrycnt = orgcnt; 700 701 while (retrycnt > 0) { 702 nfs_nb.buf = &nfs_ss; 703 nfs_nb.maxlen = sizeof nfs_ss; 704 if (!rpcb_getaddr(RPCPROG_NFS, nfsvers, nconf, &nfs_nb, hostp)){ 705 if (rpc_createerr.cf_stat == RPC_SYSTEMERROR) { 706 nfhret.stat = rpc_createerr.cf_error.re_errno; 707 break; 708 } 709 if (rpc_createerr.cf_stat == RPC_UNKNOWNPROTO) { 710 nfhret.stat = EPROTONOSUPPORT; 711 break; 712 } 713 if ((opflags & ISBGRND) == 0) 714 clnt_pcreateerror( 715 "mount_nfs: rpcbind to nfs on server"); 716 } else { 717 pertry.tv_sec = 10; 718 pertry.tv_usec = 0; 719 /* 720 * XXX relies on clnt_tcp_create to bind to a reserved 721 * socket. 722 */ 723 clp = clnt_tp_create(hostp, RPCPROG_MNT, mntvers, 724 mnttcp_ok ? nconf : getnetconfigent("udp")); 725 if (clp == NULL) { 726 if ((opflags & ISBGRND) == 0) { 727 clnt_pcreateerror( 728 "Cannot MNT RPC (mountd)"); 729 } 730 } else { 731 CLNT_CONTROL(clp, CLSET_RETRY_TIMEOUT, 732 (char *)&pertry); 733 clp->cl_auth = authsys_create_default(); 734 try.tv_sec = 10; 735 try.tv_usec = 0; 736 if (nfsargsp->flags & NFSMNT_KERB) 737 nfhret.auth = RPCAUTH_KERB4; 738 else 739 nfhret.auth = RPCAUTH_UNIX; 740 nfhret.vers = mntvers; 741 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 742 xdr_dir, spec, xdr_fh, &nfhret, try); 743 switch (clnt_stat) { 744 case RPC_PROGVERSMISMATCH: 745 if (nfsvers == NFS_VER3 && !force3) { 746 nfsvers = NFS_VER2; 747 mntvers = RPCMNT_VER1; 748 nfsargsp->flags &= 749 ~NFSMNT_NFSV3; 750 goto tryagain; 751 } else { 752 errx(1, "%s", clnt_sperror(clp, 753 "MNT RPC")); 754 } 755 case RPC_SUCCESS: 756 auth_destroy(clp->cl_auth); 757 clnt_destroy(clp); 758 retrycnt = 0; 759 break; 760 default: 761 /* XXX should give up on some errors */ 762 if ((opflags & ISBGRND) == 0) 763 warnx("%s", clnt_sperror(clp, 764 "bad MNT RPC")); 765 break; 766 } 767 } 768 } 769 if (--retrycnt > 0) { 770 if (opflags & BGRND) { 771 opflags &= ~BGRND; 772 if ((i = fork()) != 0) { 773 if (i == -1) 774 err(1, "nqnfs 2"); 775 exit(0); 776 } 777 (void) setsid(); 778 (void) close(STDIN_FILENO); 779 (void) close(STDOUT_FILENO); 780 (void) close(STDERR_FILENO); 781 (void) chdir("/"); 782 opflags |= ISBGRND; 783 } 784 sleep(60); 785 } 786 } 787 if (nfhret.stat == 0) 788 break; 789 ai = ai->ai_next; 790 } 791 freeaddrinfo(ai_nfs); 792 if (nfhret.stat) { 793 if (opflags & ISBGRND) 794 exit(1); 795 errno = nfhret.stat; 796 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 797 return (0); 798 } 799 #ifdef ISO 800 if (isoflag) { 801 nfsargsp->addr = (struct sockaddr *) &isoaddr; 802 nfsargsp->addrlen = sizeof (isoaddr); 803 } else 804 #endif /* ISO */ 805 { 806 nfsargsp->addr = (struct sockaddr *) nfs_nb.buf; 807 nfsargsp->addrlen = nfs_nb.len; 808 } 809 nfsargsp->fh = nfhret.nfh; 810 nfsargsp->fhsize = nfhret.fhsize; 811 nfsargsp->hostname = nam; 812 return (1); 813 } 814 815 /* 816 * xdr routines for mount rpc's 817 */ 818 static int 819 xdr_dir(xdrsp, dirp) 820 XDR *xdrsp; 821 char *dirp; 822 { 823 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 824 } 825 826 static int 827 xdr_fh(xdrsp, np) 828 XDR *xdrsp; 829 struct nfhret *np; 830 { 831 int i; 832 long auth, authcnt, authfnd = 0; 833 834 if (!xdr_u_long(xdrsp, &np->stat)) 835 return (0); 836 if (np->stat) 837 return (1); 838 switch (np->vers) { 839 case 1: 840 np->fhsize = NFSX_V2FH; 841 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 842 case 3: 843 if (!xdr_long(xdrsp, &np->fhsize)) 844 return (0); 845 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 846 return (0); 847 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 848 return (0); 849 if (!xdr_long(xdrsp, &authcnt)) 850 return (0); 851 for (i = 0; i < authcnt; i++) { 852 if (!xdr_long(xdrsp, &auth)) 853 return (0); 854 if (auth == np->auth) 855 authfnd++; 856 } 857 /* 858 * Some servers, such as DEC's OSF/1 return a nil authenticator 859 * list to indicate RPCAUTH_UNIX. 860 */ 861 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 862 np->stat = EAUTH; 863 return (1); 864 }; 865 return (0); 866 } 867 868 static void 869 usage() 870 { 871 (void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n%s\n", 872 "[-23bcCdiKlpPqsTUX] [-a maxreadahead] [-D deadthresh]", 873 "\t[-g maxgroups] [-I readdirsize] [-L leaseterm] [-m realm]", 874 "\t[-o options] [-R retrycnt] [-r readsize] [-t timeout]", 875 "\t[-w writesize] [-x retrans]", 876 "\trhost:path node"); 877 exit(1); 878 } 879
Indexes created Tue Sep 30 20:09:53 GMT 2025