1 /* 2 * Copyright (c) 1992, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 static const char copyright[] = 39 "@(#) Copyright (c) 1992, 1993, 1994\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95"; 46 #endif 47 static const char rcsid[] = 48 "$Id$"; 49 #endif /* not lint */ 50 51 #include <sys/param.h> 52 #include <sys/mount.h> 53 #include <sys/stat.h> 54 #include <sys/syslog.h> 55 56 #include <rpc/rpc.h> 57 #include <rpc/pmap_clnt.h> 58 #include <rpc/pmap_prot.h> 59 60 #ifdef ISO 61 #include <netiso/iso.h> 62 #endif 63 64 #ifdef NFSKERB 65 #include <kerberosIV/des.h> 66 #include <kerberosIV/krb.h> 67 #endif 68 69 #include <nfs/rpcv2.h> 70 #include <nfs/nfsproto.h> 71 #include <nfs/nfs.h> 72 #include <nfs/nqnfs.h> 73 74 #include <arpa/inet.h> 75 76 #include <ctype.h> 77 #include <err.h> 78 #include <errno.h> 79 #include <netdb.h> 80 #include <stdio.h> 81 #include <stdlib.h> 82 #include <strings.h> 83 #include <sysexits.h> 84 #include <unistd.h> 85 86 #include "mntopts.h" 87 88 #define ALTF_BG 0x1 89 #define ALTF_NOCONN 0x2 90 #define ALTF_DUMBTIMR 0x4 91 #define ALTF_INTR 0x8 92 #define ALTF_KERB 0x10 93 #define ALTF_NFSV3 0x20 94 #define ALTF_RDIRPLUS 0x40 95 #define ALTF_MNTUDP 0x80 96 #define ALTF_RESVPORT 0x100 97 #define ALTF_SEQPACKET 0x200 98 #define ALTF_NQNFS 0x400 99 #define ALTF_SOFT 0x800 100 #define ALTF_TCP 0x1000 101 #define ALTF_PORT 0x2000 102 #define ALTF_NFSV2 0x4000 103 #define ALTF_ACREGMIN 0x8000 104 #define ALTF_ACREGMAX 0x10000 105 #define ALTF_ACDIRMIN 0x20000 106 #define ALTF_ACDIRMAX 0x40000 107 108 struct mntopt mopts[] = { 109 MOPT_STDOPTS, 110 MOPT_FORCE, 111 MOPT_UPDATE, 112 MOPT_ASYNC, 113 { "bg", 0, ALTF_BG, 1 }, 114 { "conn", 1, ALTF_NOCONN, 1 }, 115 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 }, 116 { "intr", 0, ALTF_INTR, 1 }, 117 #ifdef NFSKERB 118 { "kerb", 0, ALTF_KERB, 1 }, 119 #endif 120 { "nfsv3", 0, ALTF_NFSV3, 1 }, 121 { "rdirplus", 0, ALTF_RDIRPLUS, 1 }, 122 { "mntudp", 0, ALTF_MNTUDP, 1 }, 123 { "resvport", 0, ALTF_RESVPORT, 1 }, 124 #ifdef ISO 125 { "seqpacket", 0, ALTF_SEQPACKET, 1 }, 126 #endif 127 { "nqnfs", 0, ALTF_NQNFS, 1 }, 128 { "soft", 0, ALTF_SOFT, 1 }, 129 { "tcp", 0, ALTF_TCP, 1 }, 130 { "port=", 0, ALTF_PORT, 1 }, 131 { "nfsv2", 0, ALTF_NFSV2, 1 }, 132 { "acregmin=", 0, ALTF_ACREGMIN, 1 }, 133 { "acregmax=", 0, ALTF_ACREGMAX, 1 }, 134 { "acdirmin=", 0, ALTF_ACDIRMIN, 1 }, 135 { "acdirmax=", 0, ALTF_ACDIRMAX, 1 }, 136 { NULL } 137 }; 138 139 struct nfs_args nfsdefargs = { 140 NFS_ARGSVERSION, 141 (struct sockaddr *)0, 142 sizeof (struct sockaddr_in), 143 SOCK_DGRAM, 144 0, 145 (u_char *)0, 146 0, 147 NFSMNT_RESVPORT, 148 NFS_WSIZE, 149 NFS_RSIZE, 150 NFS_READDIRSIZE, 151 10, 152 NFS_RETRANS, 153 NFS_MAXGRPS, 154 NFS_DEFRAHEAD, 155 NQ_DEFLEASE, 156 NQ_DEADTHRESH, 157 (char *)0, 158 /* args version 4 */ 159 NFS_MINATTRTIMO, 160 NFS_MAXATTRTIMO, 161 NFS_MINDIRATTRTIMO, 162 NFS_MAXDIRATTRTIMO, 163 }; 164 165 struct nfhret { 166 u_long stat; 167 long vers; 168 long auth; 169 long fhsize; 170 u_char nfh[NFSX_V3FHMAX]; 171 }; 172 #define DEF_RETRY 10000 173 #define BGRND 1 174 #define ISBGRND 2 175 int retrycnt = DEF_RETRY; 176 int opflags = 0; 177 int nfsproto = IPPROTO_UDP; 178 int mnttcp_ok = 1; 179 u_short port_no = 0; 180 enum { 181 ANY, 182 V2, 183 V3 184 } mountmode = ANY; 185 186 #ifdef NFSKERB 187 char inst[INST_SZ]; 188 char realm[REALM_SZ]; 189 struct { 190 u_long kind; 191 KTEXT_ST kt; 192 } ktick; 193 struct nfsrpc_nickverf kverf; 194 struct nfsrpc_fullblock kin, kout; 195 NFSKERBKEY_T kivec; 196 CREDENTIALS kcr; 197 struct timeval ktv; 198 NFSKERBKEYSCHED_T kerb_keysched; 199 #endif 200 201 int getnfsargs __P((char *, struct nfs_args *)); 202 #ifdef ISO 203 struct iso_addr *iso_addr __P((const char *)); 204 #endif 205 void set_rpc_maxgrouplist __P((int)); 206 void usage __P((void)) __dead2; 207 int xdr_dir __P((XDR *, char *)); 208 int xdr_fh __P((XDR *, struct nfhret *)); 209 210 /* 211 * Used to set mount flags with getmntopts. Call with dir=TRUE to 212 * initialize altflags from the current mount flags. Call with 213 * dir=FALSE to update mount flags with the new value of altflags after 214 * the call to getmntopts. 215 */ 216 static void 217 setflags(int* altflags, int* nfsflags, int dir) 218 { 219 #define F2(af, nf) \ 220 if (dir) { \ 221 if (*nfsflags & NFSMNT_##nf) \ 222 *altflags |= ALTF_##af; \ 223 else \ 224 *altflags &= ~ALTF_##af; \ 225 } else { \ 226 if (*altflags & ALTF_##af) \ 227 *nfsflags |= NFSMNT_##nf; \ 228 else \ 229 *nfsflags &= ~NFSMNT_##nf; \ 230 } 231 #define F(f) F2(f,f) 232 233 F(NOCONN); 234 F(DUMBTIMR); 235 F2(INTR, INT); 236 #ifdef NFSKERB 237 F(KERB); 238 #endif 239 F(RDIRPLUS); 240 F(RESVPORT); 241 F(NQNFS); 242 F(SOFT); 243 244 #undef F 245 #undef F2 246 } 247 248 int 249 main(argc, argv) 250 int argc; 251 char *argv[]; 252 { 253 register int c; 254 register struct nfs_args *nfsargsp; 255 struct nfs_args nfsargs; 256 struct nfsd_cargs ncd; 257 int mntflags, altflags, i, nfssvc_flag, num; 258 char *name, *p, *spec; 259 struct vfsconf vfc; 260 int error = 0; 261 #ifdef NFSKERB 262 uid_t last_ruid; 263 264 last_ruid = -1; 265 (void)strcpy(realm, KRB_REALM); 266 if (sizeof (struct nfsrpc_nickverf) != RPCX_NICKVERF || 267 sizeof (struct nfsrpc_fullblock) != RPCX_FULLBLOCK || 268 ((char *)&ktick.kt) - ((char *)&ktick) != NFSX_UNSIGNED || 269 ((char *)ktick.kt.dat) - ((char *)&ktick) != 2 * NFSX_UNSIGNED) 270 fprintf(stderr, "Yikes! NFSKERB structs not packed!!\n"); 271 #endif /* NFSKERB */ 272 retrycnt = DEF_RETRY; 273 274 mntflags = 0; 275 altflags = 0; 276 nfsargs = nfsdefargs; 277 nfsargsp = &nfsargs; 278 while ((c = getopt(argc, argv, 279 "23a:bcdD:g:I:iKL:lm:No:PpqR:r:sTt:w:x:U")) != -1) 280 switch (c) { 281 case '2': 282 mountmode = V2; 283 break; 284 case '3': 285 mountmode = V3; 286 break; 287 case 'a': 288 num = strtol(optarg, &p, 10); 289 if (*p || num < 0) 290 errx(1, "illegal -a value -- %s", optarg); 291 nfsargsp->readahead = num; 292 nfsargsp->flags |= NFSMNT_READAHEAD; 293 break; 294 case 'b': 295 opflags |= BGRND; 296 break; 297 case 'c': 298 nfsargsp->flags |= NFSMNT_NOCONN; 299 break; 300 case 'D': 301 num = strtol(optarg, &p, 10); 302 if (*p || num <= 0) 303 errx(1, "illegal -D value -- %s", optarg); 304 nfsargsp->deadthresh = num; 305 nfsargsp->flags |= NFSMNT_DEADTHRESH; 306 break; 307 case 'd': 308 nfsargsp->flags |= NFSMNT_DUMBTIMR; 309 break; 310 case 'g': 311 num = strtol(optarg, &p, 10); 312 if (*p || num <= 0) 313 errx(1, "illegal -g value -- %s", optarg); 314 #ifdef __FreeBSD__ 315 set_rpc_maxgrouplist(num); 316 #endif 317 nfsargsp->maxgrouplist = num; 318 nfsargsp->flags |= NFSMNT_MAXGRPS; 319 break; 320 case 'I': 321 num = strtol(optarg, &p, 10); 322 if (*p || num <= 0) 323 errx(1, "illegal -I value -- %s", optarg); 324 nfsargsp->readdirsize = num; 325 nfsargsp->flags |= NFSMNT_READDIRSIZE; 326 break; 327 case 'i': 328 nfsargsp->flags |= NFSMNT_INT; 329 break; 330 #ifdef NFSKERB 331 case 'K': 332 nfsargsp->flags |= NFSMNT_KERB; 333 break; 334 #endif 335 case 'L': 336 num = strtol(optarg, &p, 10); 337 if (*p || num < 2) 338 errx(1, "illegal -L value -- %s", optarg); 339 nfsargsp->leaseterm = num; 340 nfsargsp->flags |= NFSMNT_LEASETERM; 341 break; 342 case 'l': 343 nfsargsp->flags |= NFSMNT_RDIRPLUS; 344 break; 345 #ifdef NFSKERB 346 case 'm': 347 (void)strncpy(realm, optarg, REALM_SZ - 1); 348 realm[REALM_SZ - 1] = '\0'; 349 break; 350 #endif 351 case 'N': 352 nfsargsp->flags &= ~NFSMNT_RESVPORT; 353 break; 354 case 'o': 355 altflags = 0; 356 setflags(&altflags, &nfsargsp->flags, TRUE); 357 if (mountmode == V2) 358 altflags |= ALTF_NFSV2; 359 else if (mountmode == V3) 360 altflags |= ALTF_NFSV3; 361 getmntopts(optarg, mopts, &mntflags, &altflags); 362 setflags(&altflags, &nfsargsp->flags, FALSE); 363 /* 364 * Handle altflags which don't map directly to 365 * mount flags. 366 */ 367 if(altflags & ALTF_BG) 368 opflags |= BGRND; 369 if(altflags & ALTF_MNTUDP) 370 mnttcp_ok = 0; 371 #ifdef ISO 372 if(altflags & ALTF_SEQPACKET) 373 nfsargsp->sotype = SOCK_SEQPACKET; 374 #endif 375 if(altflags & ALTF_TCP) { 376 nfsargsp->sotype = SOCK_STREAM; 377 nfsproto = IPPROTO_TCP; 378 } 379 if(altflags & ALTF_PORT) 380 port_no = atoi(strstr(optarg, "port=") + 5); 381 mountmode = ANY; 382 if(altflags & ALTF_NFSV2) 383 mountmode = V2; 384 if(altflags & ALTF_NFSV3) 385 mountmode = V3; 386 if(altflags & ALTF_ACREGMIN) 387 nfsargsp->acregmin = atoi(strstr(optarg, 388 "acregmin=") + 9); 389 if(altflags & ALTF_ACREGMAX) 390 nfsargsp->acregmax = atoi(strstr(optarg, 391 "acregmax=") + 9); 392 if(altflags & ALTF_ACDIRMIN) 393 nfsargsp->acdirmin = atoi(strstr(optarg, 394 "acdirmin=") + 9); 395 if(altflags & ALTF_ACDIRMAX) 396 nfsargsp->acdirmax = atoi(strstr(optarg, 397 "acdirmax=") + 9); 398 break; 399 case 'P': 400 /* obsolete for NFSMNT_RESVPORT, now default */ 401 break; 402 #ifdef ISO 403 case 'p': 404 nfsargsp->sotype = SOCK_SEQPACKET; 405 break; 406 #endif 407 case 'q': 408 mountmode = V3; 409 nfsargsp->flags |= NFSMNT_NQNFS; 410 break; 411 case 'R': 412 num = strtol(optarg, &p, 10); 413 if (*p || num <= 0) 414 errx(1, "illegal -R value -- %s", optarg); 415 retrycnt = num; 416 break; 417 case 'r': 418 num = strtol(optarg, &p, 10); 419 if (*p || num <= 0) 420 errx(1, "illegal -r value -- %s", optarg); 421 nfsargsp->rsize = num; 422 nfsargsp->flags |= NFSMNT_RSIZE; 423 break; 424 case 's': 425 nfsargsp->flags |= NFSMNT_SOFT; 426 break; 427 case 'T': 428 nfsargsp->sotype = SOCK_STREAM; 429 nfsproto = IPPROTO_TCP; 430 break; 431 case 't': 432 num = strtol(optarg, &p, 10); 433 if (*p || num <= 0) 434 errx(1, "illegal -t value -- %s", optarg); 435 nfsargsp->timeo = num; 436 nfsargsp->flags |= NFSMNT_TIMEO; 437 break; 438 case 'w': 439 num = strtol(optarg, &p, 10); 440 if (*p || num <= 0) 441 errx(1, "illegal -w value -- %s", optarg); 442 nfsargsp->wsize = num; 443 nfsargsp->flags |= NFSMNT_WSIZE; 444 break; 445 case 'x': 446 num = strtol(optarg, &p, 10); 447 if (*p || num <= 0) 448 errx(1, "illegal -x value -- %s", optarg); 449 nfsargsp->retrans = num; 450 nfsargsp->flags |= NFSMNT_RETRANS; 451 break; 452 case 'U': 453 mnttcp_ok = 0; 454 break; 455 default: 456 usage(); 457 break; 458 } 459 argc -= optind; 460 argv += optind; 461 462 if (argc != 2) { 463 usage(); 464 /* NOTREACHED */ 465 } 466 467 spec = *argv++; 468 name = *argv; 469 470 if (!getnfsargs(spec, nfsargsp)) 471 exit(1); 472 473 #ifdef __FreeBSD__ 474 error = getvfsbyname("nfs", &vfc); 475 if (error && vfsisloadable("nfs")) { 476 if(vfsload("nfs")) 477 err(EX_OSERR, "vfsload(nfs)"); 478 endvfsent(); /* clear cache */ 479 error = getvfsbyname("nfs", &vfc); 480 } 481 if (error) 482 errx(EX_OSERR, "nfs filesystem is not available"); 483 484 if (mount(vfc.vfc_name, name, mntflags, nfsargsp)) 485 err(1, "%s", name); 486 #else 487 if (mount("nfs", name, mntflags, nfsargsp)) 488 err(1, "%s", name); 489 #endif 490 if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) { 491 if ((opflags & ISBGRND) == 0) { 492 if ((i = fork())) { 493 if (i == -1) 494 err(1, "nqnfs 1"); 495 exit(0); 496 } 497 (void) setsid(); 498 (void) close(STDIN_FILENO); 499 (void) close(STDOUT_FILENO); 500 (void) close(STDERR_FILENO); 501 (void) chdir("/"); 502 } 503 openlog("mount_nfs:", LOG_PID, LOG_DAEMON); 504 nfssvc_flag = NFSSVC_MNTD; 505 ncd.ncd_dirp = name; 506 while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) { 507 if (errno != ENEEDAUTH) { 508 syslog(LOG_ERR, "nfssvc err %m"); 509 continue; 510 } 511 nfssvc_flag = 512 NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL; 513 #ifdef NFSKERB 514 /* 515 * Set up as ncd_authuid for the kerberos call. 516 * Must set ruid to ncd_authuid and reset the 517 * ticket name iff ncd_authuid is not the same 518 * as last time, so that the right ticket file 519 * is found. 520 * Get the Kerberos credential structure so that 521 * we have the session key and get a ticket for 522 * this uid. 523 * For more info see the IETF Draft "Authentication 524 * in ONC RPC". 525 */ 526 if (ncd.ncd_authuid != last_ruid) { 527 char buf[512]; 528 (void)sprintf(buf, "%s%d", 529 TKT_ROOT, ncd.ncd_authuid); 530 krb_set_tkt_string(buf); 531 last_ruid = ncd.ncd_authuid; 532 } 533 setreuid(ncd.ncd_authuid, 0); 534 kret = krb_get_cred(NFS_KERBSRV, inst, realm, &kcr); 535 if (kret == RET_NOTKT) { 536 kret = get_ad_tkt(NFS_KERBSRV, inst, realm, 537 DEFAULT_TKT_LIFE); 538 if (kret == KSUCCESS) 539 kret = krb_get_cred(NFS_KERBSRV, inst, realm, 540 &kcr); 541 } 542 if (kret == KSUCCESS) 543 kret = krb_mk_req(&ktick.kt, NFS_KERBSRV, inst, 544 realm, 0); 545 546 /* 547 * Fill in the AKN_FULLNAME authenticator and verifier. 548 * Along with the Kerberos ticket, we need to build 549 * the timestamp verifier and encrypt it in CBC mode. 550 */ 551 if (kret == KSUCCESS && 552 ktick.kt.length <= (RPCAUTH_MAXSIZ-3*NFSX_UNSIGNED) 553 && gettimeofday(&ktv, (struct timezone *)0) == 0) { 554 ncd.ncd_authtype = RPCAUTH_KERB4; 555 ncd.ncd_authstr = (u_char *)&ktick; 556 ncd.ncd_authlen = nfsm_rndup(ktick.kt.length) + 557 3 * NFSX_UNSIGNED; 558 ncd.ncd_verfstr = (u_char *)&kverf; 559 ncd.ncd_verflen = sizeof (kverf); 560 memmove(ncd.ncd_key, kcr.session, 561 sizeof (kcr.session)); 562 kin.t1 = htonl(ktv.tv_sec); 563 kin.t2 = htonl(ktv.tv_usec); 564 kin.w1 = htonl(NFS_KERBTTL); 565 kin.w2 = htonl(NFS_KERBTTL - 1); 566 bzero((caddr_t)kivec, sizeof (kivec)); 567 568 /* 569 * Encrypt kin in CBC mode using the session 570 * key in kcr. 571 */ 572 XXX 573 574 /* 575 * Finally, fill the timestamp verifier into the 576 * authenticator and verifier. 577 */ 578 ktick.kind = htonl(RPCAKN_FULLNAME); 579 kverf.kind = htonl(RPCAKN_FULLNAME); 580 NFS_KERBW1(ktick.kt) = kout.w1; 581 ktick.kt.length = htonl(ktick.kt.length); 582 kverf.verf.t1 = kout.t1; 583 kverf.verf.t2 = kout.t2; 584 kverf.verf.w2 = kout.w2; 585 nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH; 586 } 587 setreuid(0, 0); 588 #endif /* NFSKERB */ 589 } 590 } 591 exit(0); 592 } 593 594 /* 595 * Return RPC_SUCCESS if server responds. 596 */ 597 enum clnt_stat 598 pingnfsserver(addr, version, sotype) 599 struct sockaddr_in *addr; 600 int version; 601 int sotype; 602 { 603 struct sockaddr_in sin; 604 int tport; 605 CLIENT *clp; 606 int so = RPC_ANYSOCK; 607 enum clnt_stat stat; 608 struct timeval pertry, try; 609 610 sin = *addr; 611 612 if ((tport = port_no ? port_no : 613 pmap_getport(&sin, RPCPROG_NFS, version, nfsproto)) == 0) { 614 return rpc_createerr.cf_stat; 615 } 616 617 sin.sin_port = htons(tport); 618 619 pertry.tv_sec = 10; 620 pertry.tv_usec = 0; 621 if (sotype == SOCK_STREAM) 622 clp = clnttcp_create(&sin, RPCPROG_NFS, version, 623 &so, 0, 0); 624 else 625 clp = clntudp_create(&sin, RPCPROG_NFS, version, 626 pertry, &so); 627 if (clp == NULL) 628 return rpc_createerr.cf_stat; 629 630 try.tv_sec = 10; 631 try.tv_usec = 0; 632 stat = clnt_call(clp, NFSPROC_NULL, 633 xdr_void, NULL, xdr_void, NULL, try); 634 635 clnt_destroy(clp); 636 637 return stat; 638 } 639 640 int 641 getnfsargs(spec, nfsargsp) 642 char *spec; 643 struct nfs_args *nfsargsp; 644 { 645 register CLIENT *clp; 646 struct hostent *hp; 647 static struct sockaddr_in saddr; 648 #ifdef ISO 649 static struct sockaddr_iso isoaddr; 650 struct iso_addr *isop; 651 int isoflag = 0; 652 #endif 653 struct timeval pertry, try; 654 enum clnt_stat clnt_stat; 655 int so = RPC_ANYSOCK, i, nfsvers, mntvers, orgcnt; 656 char *hostp, *delimp; 657 #ifdef NFSKERB 658 char *cp; 659 #endif 660 u_short tport; 661 static struct nfhret nfhret; 662 static char nam[MNAMELEN + 1]; 663 664 strncpy(nam, spec, MNAMELEN); 665 nam[MNAMELEN] = '\0'; 666 if ((delimp = strchr(spec, '@')) != NULL) { 667 hostp = delimp + 1; 668 } else if ((delimp = strchr(spec, ':')) != NULL) { 669 hostp = spec; 670 spec = delimp + 1; 671 } else { 672 warnx("no <host>:<dirpath> or <dirpath>@<host> spec"); 673 return (0); 674 } 675 *delimp = '\0'; 676 /* 677 * DUMB!! Until the mount protocol works on iso transport, we must 678 * supply both an iso and an inet address for the host. 679 */ 680 #ifdef ISO 681 if (!strncmp(hostp, "iso=", 4)) { 682 u_short isoport; 683 684 hostp += 4; 685 isoflag++; 686 if ((delimp = strchr(hostp, '+')) == NULL) { 687 warnx("no iso+inet address"); 688 return (0); 689 } 690 *delimp = '\0'; 691 if ((isop = iso_addr(hostp)) == NULL) { 692 warnx("bad ISO address"); 693 return (0); 694 } 695 memset(&isoaddr, 0, sizeof (isoaddr)); 696 memmove(&isoaddr.siso_addr, isop, sizeof (struct iso_addr)); 697 isoaddr.siso_len = sizeof (isoaddr); 698 isoaddr.siso_family = AF_ISO; 699 isoaddr.siso_tlen = 2; 700 isoport = htons(NFS_PORT); 701 memmove(TSEL(&isoaddr), &isoport, isoaddr.siso_tlen); 702 hostp = delimp + 1; 703 } 704 #endif /* ISO */ 705 706 /* 707 * Handle an internet host address and reverse resolve it if 708 * doing Kerberos. 709 */ 710 if (isdigit(*hostp)) { 711 if ((saddr.sin_addr.s_addr = inet_addr(hostp)) == -1) { 712 warnx("bad net address %s", hostp); 713 return (0); 714 } 715 } else if ((hp = gethostbyname(hostp)) != NULL) 716 memmove(&saddr.sin_addr, hp->h_addr, 717 MIN(hp->h_length, sizeof(saddr.sin_addr))); 718 else { 719 warnx("can't get net id for host"); 720 return (0); 721 } 722 #ifdef NFSKERB 723 if ((nfsargsp->flags & NFSMNT_KERB)) { 724 if ((hp = gethostbyaddr((char *)&saddr.sin_addr.s_addr, 725 sizeof (u_long), AF_INET)) == (struct hostent *)0) { 726 warnx("can't reverse resolve net address"); 727 return (0); 728 } 729 memmove(&saddr.sin_addr, hp->h_addr, 730 MIN(hp->h_length, sizeof(saddr.sin_addr))); 731 strncpy(inst, hp->h_name, INST_SZ); 732 inst[INST_SZ - 1] = '\0'; 733 if (cp = strchr(inst, '.')) 734 *cp = '\0'; 735 } 736 #endif /* NFSKERB */ 737 738 orgcnt = retrycnt; 739 tryagain: 740 if (mountmode == ANY || mountmode == V3) { 741 nfsvers = 3; 742 mntvers = 3; 743 nfsargsp->flags |= NFSMNT_NFSV3; 744 } else { 745 nfsvers = 2; 746 mntvers = 1; 747 nfsargsp->flags &= ~NFSMNT_NFSV3; 748 } 749 nfhret.stat = EACCES; /* Mark not yet successful */ 750 while (retrycnt > 0) { 751 saddr.sin_family = AF_INET; 752 saddr.sin_port = htons(PMAPPORT); 753 if ((tport = port_no ? port_no : 754 pmap_getport(&saddr, RPCPROG_NFS, 755 nfsvers, nfsproto)) == 0) { 756 if ((opflags & ISBGRND) == 0) 757 clnt_pcreateerror("NFS Portmap"); 758 } else { 759 /* 760 * First ping the nfs server to see if it supports 761 * the version of the protocol we want to use. 762 */ 763 clnt_stat = pingnfsserver(&saddr, nfsvers, 764 nfsargsp->sotype); 765 if (clnt_stat == RPC_PROGVERSMISMATCH) { 766 if (mountmode == ANY) { 767 mountmode = V2; 768 goto tryagain; 769 } else { 770 errx(1, "can't contact NFS server"); 771 } 772 } 773 saddr.sin_port = 0; 774 pertry.tv_sec = 10; 775 pertry.tv_usec = 0; 776 if (mnttcp_ok && nfsargsp->sotype == SOCK_STREAM) 777 clp = clnttcp_create(&saddr, RPCPROG_MNT, mntvers, 778 &so, 0, 0); 779 else 780 clp = clntudp_create(&saddr, RPCPROG_MNT, mntvers, 781 pertry, &so); 782 if (clp == NULL) { 783 if ((opflags & ISBGRND) == 0) 784 clnt_pcreateerror("Cannot MNT RPC"); 785 } else { 786 clp->cl_auth = authunix_create_default(); 787 try.tv_sec = 10; 788 try.tv_usec = 0; 789 if (nfsargsp->flags & NFSMNT_KERB) 790 nfhret.auth = RPCAUTH_KERB4; 791 else 792 nfhret.auth = RPCAUTH_UNIX; 793 nfhret.vers = mntvers; 794 clnt_stat = clnt_call(clp, RPCMNT_MOUNT, 795 xdr_dir, spec, xdr_fh, &nfhret, try); 796 if (clnt_stat != RPC_SUCCESS) { 797 if (clnt_stat == RPC_PROGVERSMISMATCH) { 798 if (mountmode == ANY) { 799 mountmode = V2; 800 goto tryagain; 801 } else { 802 errx(1, "%s", 803 clnt_sperror(clp, "MNT RPC")); 804 } 805 } 806 if ((opflags & ISBGRND) == 0) 807 warnx("%s", clnt_sperror(clp, 808 "bad MNT RPC")); 809 } else { 810 auth_destroy(clp->cl_auth); 811 clnt_destroy(clp); 812 retrycnt = 0; 813 } 814 } 815 } 816 if (--retrycnt > 0) { 817 if (opflags & BGRND) { 818 opflags &= ~BGRND; 819 if ((i = fork())) { 820 if (i == -1) 821 err(1, "nqnfs 2"); 822 exit(0); 823 } 824 (void) setsid(); 825 (void) close(STDIN_FILENO); 826 (void) close(STDOUT_FILENO); 827 (void) close(STDERR_FILENO); 828 (void) chdir("/"); 829 opflags |= ISBGRND; 830 } 831 sleep(60); 832 } 833 } 834 if (nfhret.stat) { 835 if (opflags & ISBGRND) 836 exit(1); 837 warnx("can't access %s: %s", spec, strerror(nfhret.stat)); 838 return (0); 839 } 840 saddr.sin_port = htons(tport); 841 #ifdef ISO 842 if (isoflag) { 843 nfsargsp->addr = (struct sockaddr *) &isoaddr; 844 nfsargsp->addrlen = sizeof (isoaddr); 845 } else 846 #endif /* ISO */ 847 { 848 nfsargsp->addr = (struct sockaddr *) &saddr; 849 nfsargsp->addrlen = sizeof (saddr); 850 } 851 nfsargsp->fh = nfhret.nfh; 852 nfsargsp->fhsize = nfhret.fhsize; 853 nfsargsp->hostname = nam; 854 return (1); 855 } 856 857 /* 858 * xdr routines for mount rpc's 859 */ 860 int 861 xdr_dir(xdrsp, dirp) 862 XDR *xdrsp; 863 char *dirp; 864 { 865 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 866 } 867 868 int 869 xdr_fh(xdrsp, np) 870 XDR *xdrsp; 871 register struct nfhret *np; 872 { 873 register int i; 874 long auth, authcnt, authfnd = 0; 875 876 if (!xdr_u_long(xdrsp, &np->stat)) 877 return (0); 878 if (np->stat) 879 return (1); 880 switch (np->vers) { 881 case 1: 882 np->fhsize = NFSX_V2FH; 883 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH)); 884 case 3: 885 if (!xdr_long(xdrsp, &np->fhsize)) 886 return (0); 887 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX) 888 return (0); 889 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize)) 890 return (0); 891 if (!xdr_long(xdrsp, &authcnt)) 892 return (0); 893 for (i = 0; i < authcnt; i++) { 894 if (!xdr_long(xdrsp, &auth)) 895 return (0); 896 if (auth == np->auth) 897 authfnd++; 898 } 899 /* 900 * Some servers, such as DEC's OSF/1 return a nil authenticator 901 * list to indicate RPCAUTH_UNIX. 902 */ 903 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX)) 904 np->stat = EAUTH; 905 return (1); 906 }; 907 return (0); 908 } 909 910 void 911 usage() 912 { 913 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 914 "usage: mount_nfs [-23KNPTUbcdilqs] [-D deadthresh] [-I readdirsize]", 915 " [-L leaseterm] [-R retrycnt] [-a maxreadahead]", 916 " [-g maxgroups] [-m realm] [-o options] [-r readsize]", 917 " [-t timeout] [-w writesize] [-x retrans] rhost:path node"); 918 exit(1); 919 } 920