2 * Copyright (c) 1992, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static const char copyright[] =
36 "@(#) Copyright (c) 1992, 1993, 1994\n\
37 The Regents of the University of California. All rights reserved.\n";
41 static char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95";
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
47 #include <sys/param.h>
48 #include <sys/linker.h>
49 #include <sys/module.h>
50 #include <sys/mount.h>
51 #include <sys/socket.h>
53 #include <sys/syslog.h>
57 #include <rpc/pmap_clnt.h>
58 #include <rpc/pmap_prot.h>
59 #include <rpcsvc/nfs_prot.h>
60 #include <rpcsvc/mount.h>
62 #include <nfsclient/nfs.h>
64 #include <arpa/inet.h>
81 /* Table for af,sotype -> netid conversions. */
87 {"udp", AF_INET, SOCK_DGRAM},
88 {"tcp", AF_INET, SOCK_STREAM},
89 {"udp6", AF_INET6, SOCK_DGRAM},
90 {"tcp6", AF_INET6, SOCK_STREAM},
99 u_char nfh[NFS3_FHSIZE];
107 int nfsproto = IPPROTO_TCP;
110 char *portspec = NULL; /* Server nfs port; NULL means look up via rpcbind. */
111 struct sockaddr *addr;
116 int got_principal = 0;
125 /* Return codes for nfs_tryproto. */
128 TRYRET_TIMEOUT, /* No response received. */
129 TRYRET_REMOTEERR, /* Error received from remote server. */
130 TRYRET_LOCALERR /* Local failure. */
133 static int fallback_mount(struct iovec *iov, int iovlen);
134 static int sec_name_to_num(char *sec);
135 static char *sec_num_to_name(int num);
136 static int getnfsargs(char *, struct iovec **iov, int *iovlen);
137 /* void set_rpc_maxgrouplist(int); */
138 static struct netconfig *getnetconf_cached(const char *netid);
139 static const char *netidbytype(int af, int sotype);
140 static void usage(void) __dead2;
141 static int xdr_dir(XDR *, char *);
142 static int xdr_fh(XDR *, struct nfhret *);
143 static enum tryret nfs_tryproto(struct addrinfo *ai, char *hostp, char *spec,
144 char **errstr, struct iovec **iov, int *iovlen);
145 static enum tryret returncode(enum clnt_stat stat, struct rpc_err *rpcerr);
148 main(int argc, char *argv[])
154 char *name, *p, *spec, *fstype;
155 char mntpath[MAXPATHLEN], errmsg[255];
156 char hostname[MAXHOSTNAMELEN + 1], *gssname, gssn[MAXHOSTNAMELEN + 50];
160 memset(errmsg, 0, sizeof(errmsg));
163 fstype = strrchr(argv[0], '_');
165 errx(EX_USAGE, "argv[0] must end in _fstype");
169 while ((c = getopt(argc, argv,
170 "23a:bcdD:g:I:iLlNo:PR:r:sTt:w:x:U")) != -1)
179 printf("-a deprecated, use -o readahead=<value>\n");
180 build_iovec(&iov, &iovlen, "readahead", optarg, (size_t)-1);
186 printf("-c deprecated, use -o noconn\n");
187 build_iovec(&iov, &iovlen, "noconn", NULL, 0);
191 printf("-D deprecated, use -o deadthresh=<value>\n");
192 build_iovec(&iov, &iovlen, "deadthresh", optarg, (size_t)-1);
195 printf("-d deprecated, use -o dumbtimer");
196 build_iovec(&iov, &iovlen, "dumbtimer", NULL, 0);
199 printf("-g deprecated, use -o maxgroups");
200 num = strtol(optarg, &p, 10);
202 errx(1, "illegal -g value -- %s", optarg);
203 //set_rpc_maxgrouplist(num);
204 build_iovec(&iov, &iovlen, "maxgroups", optarg, (size_t)-1);
207 printf("-I deprecated, use -o readdirsize=<value>\n");
208 build_iovec(&iov, &iovlen, "readdirsize", optarg, (size_t)-1);
211 printf("-i deprecated, use -o intr\n");
212 build_iovec(&iov, &iovlen, "intr", NULL, 0);
215 printf("-L deprecated, use -o nolockd\n");
216 build_iovec(&iov, &iovlen, "nolockd", NULL, 0);
219 printf("-l deprecated, -o rdirplus\n");
220 build_iovec(&iov, &iovlen, "rdirplus", NULL, 0);
223 printf("-N deprecated, do not specify -o resvport\n");
226 int pass_flag_to_nmount;
230 char *pnextopt = NULL;
232 pass_flag_to_nmount = 1;
233 pnextopt = strchr(opt, ',');
234 if (pnextopt != NULL) {
238 pval = strchr(opt, '=');
243 if (strcmp(opt, "bg") == 0) {
245 pass_flag_to_nmount=0;
246 } else if (strcmp(opt, "fg") == 0) {
247 /* same as not specifying -o bg */
248 pass_flag_to_nmount=0;
249 } else if (strcmp(opt, "gssname") == 0) {
250 pass_flag_to_nmount = 0;
252 } else if (strcmp(opt, "mntudp") == 0) {
254 nfsproto = IPPROTO_UDP;
255 } else if (strcmp(opt, "udp") == 0) {
256 nfsproto = IPPROTO_UDP;
257 } else if (strcmp(opt, "tcp") == 0) {
258 nfsproto = IPPROTO_TCP;
259 } else if (strcmp(opt, "noinet4") == 0) {
260 pass_flag_to_nmount=0;
261 opflags |= OF_NOINET4;
262 } else if (strcmp(opt, "noinet6") == 0) {
263 pass_flag_to_nmount=0;
264 opflags |= OF_NOINET6;
265 } else if (strcmp(opt, "noconn") == 0) {
267 } else if (strcmp(opt, "nfsv2") == 0) {
268 pass_flag_to_nmount=0;
270 } else if (strcmp(opt, "nfsv3") == 0) {
272 } else if (strcmp(opt, "nfsv4") == 0) {
273 pass_flag_to_nmount=0;
276 nfsproto = IPPROTO_TCP;
277 if (portspec == NULL)
279 } else if (strcmp(opt, "port") == 0) {
280 pass_flag_to_nmount=0;
281 asprintf(&portspec, "%d",
283 if (portspec == NULL)
285 } else if (strcmp(opt, "principal") == 0) {
287 } else if (strcmp(opt, "sec") == 0) {
289 * Don't add this option to
290 * the iovec yet - we will
291 * negotiate which sec flavor
292 * to use with the remote
295 pass_flag_to_nmount=0;
296 secflavor = sec_name_to_num(val);
299 "illegal sec value -- %s",
302 } else if (strcmp(opt, "retrycnt") == 0) {
303 pass_flag_to_nmount=0;
304 num = strtol(val, &p, 10);
306 errx(1, "illegal retrycnt value -- %s", val);
308 } else if (strcmp(opt, "maxgroups") == 0) {
309 num = strtol(val, &p, 10);
311 errx(1, "illegal maxgroups value -- %s", val);
312 //set_rpc_maxgrouplist(num);
314 if (pass_flag_to_nmount)
315 build_iovec(&iov, &iovlen, opt, val,
322 /* obsolete for -o noresvport now default */
323 printf("-P deprecated, use -o noresvport\n");
324 build_iovec(&iov, &iovlen, "noresvport", NULL, 0);
327 printf("-R deprecated, use -o retrycnt=<retrycnt>\n");
328 num = strtol(optarg, &p, 10);
330 errx(1, "illegal -R value -- %s", optarg);
334 printf("-r deprecated, use -o rsize=<rsize>\n");
335 build_iovec(&iov, &iovlen, "rsize", optarg, (size_t)-1);
338 printf("-s deprecated, use -o soft\n");
339 build_iovec(&iov, &iovlen, "soft", NULL, 0);
342 nfsproto = IPPROTO_TCP;
343 printf("-T deprecated, use -o tcp\n");
346 printf("-t deprecated, use -o timeout=<value>\n");
347 build_iovec(&iov, &iovlen, "timeout", optarg, (size_t)-1);
350 printf("-w deprecated, use -o wsize=<value>\n");
351 build_iovec(&iov, &iovlen, "wsize", optarg, (size_t)-1);
354 printf("-x deprecated, use -o retrans=<value>\n");
355 build_iovec(&iov, &iovlen, "retrans", optarg, (size_t)-1);
358 printf("-U deprecated, use -o mntudp\n");
360 nfsproto = IPPROTO_UDP;
361 build_iovec(&iov, &iovlen, "mntudp", NULL, 0);
379 /* The default is to keep retrying forever. */
383 * If the fstye is "oldnfs", run the old NFS client unless the
384 * "nfsv4" option was specified.
386 if (strcmp(fstype, "nfs") == 0) {
387 if (modfind("nfscl") < 0) {
388 /* Not present in kernel, try loading it */
389 if (kldload("nfscl") < 0 ||
390 modfind("nfscl") < 0)
391 errx(1, "nfscl is not available");
396 * Add the fqdn to the gssname, as required.
398 if (gssname != NULL) {
399 if (strchr(gssname, '@') == NULL &&
400 gethostname(hostname, MAXHOSTNAMELEN) == 0) {
401 snprintf(gssn, sizeof (gssn), "%s@%s", gssname,
405 build_iovec(&iov, &iovlen, "gssname", gssname,
406 strlen(gssname) + 1);
409 if (!getnfsargs(spec, &iov, &iovlen))
412 /* resolve the mountpoint with realpath(3) */
413 if (checkpath(name, mntpath) != 0)
414 err(1, "%s", mntpath);
416 build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1);
417 build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1);
418 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
422 * Backwards compatibility routines for older kernels.
423 * Remove this and fallback_mount() code when we do not need to support
424 * NFS mounts against older kernels which still need
425 * struct nfs_args to be passed in via nmount().
427 osversion = getosreldate();
428 if (osversion >= 702100) {
429 if (nmount(iov, iovlen, 0))
430 err(1, "%s, %s", mntpath, errmsg);
432 if (fallback_mount(iov, iovlen))
433 err(1, "%s, %s", mntpath, errmsg);
440 findopt(struct iovec *iov, int iovlen, const char *name,
441 char **valuep, int *lenp)
445 for (i = 0; i < iovlen/2; i++, iov += 2) {
446 if (strcmp(name, iov[0].iov_base) == 0) {
448 *valuep = iov[1].iov_base;
450 *lenp = iov[1].iov_len;
458 copyopt(struct iovec **newiov, int *newiovlen,
459 struct iovec *iov, int iovlen, const char *name)
464 if (findopt(iov, iovlen, name, &value, &len) == 0)
465 build_iovec(newiov, newiovlen, name, value, len);
469 * XXX: This function is provided for backwards
470 * compatibility with older kernels which did not support
471 * passing NFS mount options to nmount() as individual
472 * parameters. It should be eventually be removed.
475 fallback_mount(struct iovec *iov, int iovlen)
477 struct nfs_args args = {
478 .version = NFS_ARGSVERSION,
480 .addrlen = sizeof (struct sockaddr_in),
481 .sotype = SOCK_STREAM,
485 .flags = NFSMNT_RESVPORT,
488 .readdirsize = NFS_READDIRSIZE,
490 .retrans = NFS_RETRANS,
491 .maxgrouplist = NFS_MAXGRPS,
492 .readahead = NFS_DEFRAHEAD,
493 .wcommitsize = 0, /* was: NQ_DEFLEASE */
494 .deadthresh = NFS_MAXDEADTHRESH, /* was: NQ_DEADTHRESH */
497 .acregmin = NFS_MINATTRTIMO,
498 .acregmax = NFS_MAXATTRTIMO,
499 .acdirmin = NFS_MINDIRATTRTIMO,
500 .acdirmax = NFS_MAXDIRATTRTIMO,
504 struct iovec *newiov;
507 if (findopt(iov, iovlen, "dumbtimer", NULL, NULL) == 0)
508 args.flags |= NFSMNT_DUMBTIMR;
509 if (findopt(iov, iovlen, "noconn", NULL, NULL) == 0)
510 args.flags |= NFSMNT_NOCONN;
511 if (findopt(iov, iovlen, "conn", NULL, NULL) == 0)
512 args.flags |= NFSMNT_NOCONN;
513 if (findopt(iov, iovlen, "nolockd", NULL, NULL) == 0)
514 args.flags |= NFSMNT_NOLOCKD;
515 if (findopt(iov, iovlen, "lockd", NULL, NULL) == 0)
516 args.flags &= ~NFSMNT_NOLOCKD;
517 if (findopt(iov, iovlen, "intr", NULL, NULL) == 0)
518 args.flags |= NFSMNT_INT;
519 if (findopt(iov, iovlen, "rdirplus", NULL, NULL) == 0)
520 args.flags |= NFSMNT_RDIRPLUS;
521 if (findopt(iov, iovlen, "resvport", NULL, NULL) == 0)
522 args.flags |= NFSMNT_RESVPORT;
523 if (findopt(iov, iovlen, "noresvport", NULL, NULL) == 0)
524 args.flags &= ~NFSMNT_RESVPORT;
525 if (findopt(iov, iovlen, "soft", NULL, NULL) == 0)
526 args.flags |= NFSMNT_SOFT;
527 if (findopt(iov, iovlen, "hard", NULL, NULL) == 0)
528 args.flags &= ~NFSMNT_SOFT;
529 if (findopt(iov, iovlen, "mntudp", NULL, NULL) == 0)
530 args.sotype = SOCK_DGRAM;
531 if (findopt(iov, iovlen, "udp", NULL, NULL) == 0)
532 args.sotype = SOCK_DGRAM;
533 if (findopt(iov, iovlen, "tcp", NULL, NULL) == 0)
534 args.sotype = SOCK_STREAM;
535 if (findopt(iov, iovlen, "nfsv3", NULL, NULL) == 0)
536 args.flags |= NFSMNT_NFSV3;
537 if (findopt(iov, iovlen, "readdirsize", &opt, NULL) == 0) {
539 errx(1, "illegal readdirsize");
541 ret = sscanf(opt, "%d", &args.readdirsize);
542 if (ret != 1 || args.readdirsize <= 0) {
543 errx(1, "illegal readdirsize: %s", opt);
545 args.flags |= NFSMNT_READDIRSIZE;
547 if (findopt(iov, iovlen, "readahead", &opt, NULL) == 0) {
549 errx(1, "illegal readahead");
551 ret = sscanf(opt, "%d", &args.readahead);
552 if (ret != 1 || args.readahead <= 0) {
553 errx(1, "illegal readahead: %s", opt);
555 args.flags |= NFSMNT_READAHEAD;
557 if (findopt(iov, iovlen, "wsize", &opt, NULL) == 0) {
559 errx(1, "illegal wsize");
561 ret = sscanf(opt, "%d", &args.wsize);
562 if (ret != 1 || args.wsize <= 0) {
563 errx(1, "illegal wsize: %s", opt);
565 args.flags |= NFSMNT_WSIZE;
567 if (findopt(iov, iovlen, "rsize", &opt, NULL) == 0) {
569 errx(1, "illegal rsize");
571 ret = sscanf(opt, "%d", &args.rsize);
572 if (ret != 1 || args.rsize <= 0) {
573 errx(1, "illegal wsize: %s", opt);
575 args.flags |= NFSMNT_RSIZE;
577 if (findopt(iov, iovlen, "retrans", &opt, NULL) == 0) {
579 errx(1, "illegal retrans");
581 ret = sscanf(opt, "%d", &args.retrans);
582 if (ret != 1 || args.retrans <= 0) {
583 errx(1, "illegal retrans: %s", opt);
585 args.flags |= NFSMNT_RETRANS;
587 if (findopt(iov, iovlen, "acregmin", &opt, NULL) == 0) {
588 ret = sscanf(opt, "%d", &args.acregmin);
589 if (ret != 1 || args.acregmin < 0) {
590 errx(1, "illegal acregmin: %s", opt);
592 args.flags |= NFSMNT_ACREGMIN;
594 if (findopt(iov, iovlen, "acregmax", &opt, NULL) == 0) {
595 ret = sscanf(opt, "%d", &args.acregmax);
596 if (ret != 1 || args.acregmax < 0) {
597 errx(1, "illegal acregmax: %s", opt);
599 args.flags |= NFSMNT_ACREGMAX;
601 if (findopt(iov, iovlen, "acdirmin", &opt, NULL) == 0) {
602 ret = sscanf(opt, "%d", &args.acdirmin);
603 if (ret != 1 || args.acdirmin < 0) {
604 errx(1, "illegal acdirmin: %s", opt);
606 args.flags |= NFSMNT_ACDIRMIN;
608 if (findopt(iov, iovlen, "acdirmax", &opt, NULL) == 0) {
609 ret = sscanf(opt, "%d", &args.acdirmax);
610 if (ret != 1 || args.acdirmax < 0) {
611 errx(1, "illegal acdirmax: %s", opt);
613 args.flags |= NFSMNT_ACDIRMAX;
615 if (findopt(iov, iovlen, "wcommitsize", &opt, NULL) == 0) {
616 ret = sscanf(opt, "%d", &args.wcommitsize);
617 if (ret != 1 || args.wcommitsize < 0) {
618 errx(1, "illegal wcommitsize: %s", opt);
620 args.flags |= NFSMNT_WCOMMITSIZE;
622 if (findopt(iov, iovlen, "deadthresh", &opt, NULL) == 0) {
623 ret = sscanf(opt, "%d", &args.deadthresh);
624 if (ret != 1 || args.deadthresh <= 0) {
625 errx(1, "illegal deadthresh: %s", opt);
627 args.flags |= NFSMNT_DEADTHRESH;
629 if (findopt(iov, iovlen, "timeout", &opt, NULL) == 0) {
630 ret = sscanf(opt, "%d", &args.timeo);
631 if (ret != 1 || args.timeo <= 0) {
632 errx(1, "illegal timeout: %s", opt);
634 args.flags |= NFSMNT_TIMEO;
636 if (findopt(iov, iovlen, "maxgroups", &opt, NULL) == 0) {
637 ret = sscanf(opt, "%d", &args.maxgrouplist);
638 if (ret != 1 || args.timeo <= 0) {
639 errx(1, "illegal maxgroups: %s", opt);
641 args.flags |= NFSMNT_MAXGRPS;
643 if (findopt(iov, iovlen, "addr", &opt,
644 &args.addrlen) == 0) {
645 args.addr = (struct sockaddr *) opt;
647 if (findopt(iov, iovlen, "fh", &opt, &args.fhsize) == 0) {
650 if (findopt(iov, iovlen, "hostname", &args.hostname,
653 if (args.hostname == NULL) {
654 errx(1, "Invalid hostname");
660 build_iovec(&newiov, &newiovlen, "nfs_args", &args, sizeof(args));
661 copyopt(&newiov, &newiovlen, iov, iovlen, "fstype");
662 copyopt(&newiov, &newiovlen, iov, iovlen, "fspath");
663 copyopt(&newiov, &newiovlen, iov, iovlen, "errmsg");
665 return nmount(newiov, newiovlen, 0);
669 sec_name_to_num(char *sec)
671 if (!strcmp(sec, "krb5"))
672 return (RPCSEC_GSS_KRB5);
673 if (!strcmp(sec, "krb5i"))
674 return (RPCSEC_GSS_KRB5I);
675 if (!strcmp(sec, "krb5p"))
676 return (RPCSEC_GSS_KRB5P);
677 if (!strcmp(sec, "sys"))
683 sec_num_to_name(int flavor)
686 case RPCSEC_GSS_KRB5:
688 case RPCSEC_GSS_KRB5I:
690 case RPCSEC_GSS_KRB5P:
699 getnfsargs(char *spec, struct iovec **iov, int *iovlen)
701 struct addrinfo hints, *ai_nfs, *ai;
703 int ecode, speclen, remoteerr, offset, have_bracket = 0;
704 char *hostp, *delimp, *errstr;
706 static char nam[MNAMELEN + 1], pname[MAXHOSTNAMELEN + 5];
708 if (*spec == '[' && (delimp = strchr(spec + 1, ']')) != NULL &&
709 *(delimp + 1) == ':') {
713 } else if ((delimp = strrchr(spec, ':')) != NULL) {
716 } else if ((delimp = strrchr(spec, '@')) != NULL) {
717 warnx("path@server syntax is deprecated, use server:path");
720 warnx("no <host>:<dirpath> nfs-name");
726 * If there has been a trailing slash at mounttime it seems
727 * that some mountd implementations fail to remove the mount
728 * entries from their mountlist while unmounting.
730 for (speclen = strlen(spec);
731 speclen > 1 && spec[speclen - 1] == '/';
733 spec[speclen - 1] = '\0';
734 if (strlen(hostp) + strlen(spec) + 1 > MNAMELEN) {
735 warnx("%s:%s: %s", hostp, spec, strerror(ENAMETOOLONG));
738 /* Make both '@' and ':' notations equal */
739 if (*hostp != '\0') {
744 memmove(nam + offset, hostp, len);
746 nam[len + offset++] = ']';
747 nam[len + offset++] = ':';
748 memmove(nam + len + offset, spec, speclen);
749 nam[len + speclen + offset] = '\0';
753 * Handle an internet host address.
755 memset(&hints, 0, sizeof hints);
756 hints.ai_flags = AI_NUMERICHOST;
757 if (nfsproto == IPPROTO_TCP)
758 hints.ai_socktype = SOCK_STREAM;
759 else if (nfsproto == IPPROTO_UDP)
760 hints.ai_socktype = SOCK_DGRAM;
762 if (getaddrinfo(hostp, portspec, &hints, &ai_nfs) != 0) {
763 hints.ai_flags = AI_CANONNAME;
764 if ((ecode = getaddrinfo(hostp, portspec, &hints, &ai_nfs))
766 if (portspec == NULL)
767 errx(1, "%s: %s", hostp, gai_strerror(ecode));
769 errx(1, "%s:%s: %s", hostp, portspec,
770 gai_strerror(ecode));
775 * For a Kerberized nfs mount where the "principal"
776 * argument has not been set, add it here.
778 if (got_principal == 0 && secflavor >= 0 &&
779 secflavor != AUTH_SYS && ai_nfs->ai_canonname != NULL) {
780 snprintf(pname, sizeof (pname), "nfs@%s",
781 ai_nfs->ai_canonname);
782 build_iovec(iov, iovlen, "principal", pname,
787 ret = TRYRET_LOCALERR;
790 * Try each entry returned by getaddrinfo(). Note the
791 * occurrence of remote errors by setting `remoteerr'.
794 for (ai = ai_nfs; ai != NULL; ai = ai->ai_next) {
795 if ((ai->ai_family == AF_INET6) &&
796 (opflags & OF_NOINET6))
798 if ((ai->ai_family == AF_INET) &&
799 (opflags & OF_NOINET4))
801 ret = nfs_tryproto(ai, hostp, spec, &errstr, iov,
803 if (ret == TRYRET_SUCCESS)
805 if (ret != TRYRET_LOCALERR)
807 if ((opflags & ISBGRND) == 0)
808 fprintf(stderr, "%s\n", errstr);
810 if (ret == TRYRET_SUCCESS)
813 /* Exit if all errors were local. */
818 * If retrycnt == 0, we are to keep retrying forever.
819 * Otherwise decrement it, and exit if it hits zero.
821 if (retrycnt != 0 && --retrycnt == 0)
824 if ((opflags & (BGRND | ISBGRND)) == BGRND) {
825 warnx("Cannot immediately mount %s:%s, backgrounding",
828 if (daemon(0, 0) != 0)
833 freeaddrinfo(ai_nfs);
835 build_iovec(iov, iovlen, "hostname", nam, (size_t)-1);
836 /* Add mounted file system to PATH_MOUNTTAB */
837 if (!add_mtab(hostp, spec))
838 warnx("can't update %s for %s:%s", PATH_MOUNTTAB, hostp, spec);
843 * Try to set up the NFS arguments according to the address
844 * family, protocol (and possibly port) specified in `ai'.
846 * Returns TRYRET_SUCCESS if successful, or:
847 * TRYRET_TIMEOUT The server did not respond.
848 * TRYRET_REMOTEERR The server reported an error.
849 * TRYRET_LOCALERR Local failure.
851 * In all error cases, *errstr will be set to a statically-allocated string
852 * describing the error.
855 nfs_tryproto(struct addrinfo *ai, char *hostp, char *spec, char **errstr,
856 struct iovec **iov, int *iovlen)
858 static char errbuf[256];
859 struct sockaddr_storage nfs_ss;
860 struct netbuf nfs_nb;
861 struct nfhret nfhret;
863 struct rpc_err rpcerr;
865 struct netconfig *nconf, *nconf_mnt;
866 const char *netid, *netid_mnt;
868 int doconnect, nfsvers, mntvers, sotype;
870 enum mountmode trymntmode;
873 trymntmode = mountmode;
877 if (nfsproto == IPPROTO_TCP)
878 sotype = SOCK_STREAM;
879 else if (nfsproto == IPPROTO_UDP)
882 if ((netid = netidbytype(ai->ai_family, sotype)) == NULL) {
883 snprintf(errbuf, sizeof errbuf,
884 "af %d sotype %d not supported", ai->ai_family, sotype);
885 return (TRYRET_LOCALERR);
887 if ((nconf = getnetconf_cached(netid)) == NULL) {
888 snprintf(errbuf, sizeof errbuf, "%s: %s", netid, nc_sperror());
889 return (TRYRET_LOCALERR);
891 /* The RPCPROG_MNT netid may be different. */
896 if ((netid_mnt = netidbytype(ai->ai_family, SOCK_DGRAM))
898 snprintf(errbuf, sizeof errbuf,
899 "af %d sotype SOCK_DGRAM not supported",
901 return (TRYRET_LOCALERR);
903 if ((nconf_mnt = getnetconf_cached(netid_mnt)) == NULL) {
904 snprintf(errbuf, sizeof errbuf, "%s: %s", netid_mnt,
906 return (TRYRET_LOCALERR);
911 if (trymntmode == V4) {
913 } else if (trymntmode == V2) {
921 if (portspec != NULL) {
922 /* `ai' contains the complete nfsd sockaddr. */
923 nfs_nb.buf = ai->ai_addr;
924 nfs_nb.len = nfs_nb.maxlen = ai->ai_addrlen;
926 /* Ask the remote rpcbind. */
927 nfs_nb.buf = &nfs_ss;
928 nfs_nb.len = nfs_nb.maxlen = sizeof nfs_ss;
930 if (!rpcb_getaddr(NFS_PROGRAM, nfsvers, nconf, &nfs_nb,
932 if (rpc_createerr.cf_stat == RPC_PROGVERSMISMATCH &&
937 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s",
939 clnt_spcreateerror("RPCPROG_NFS"));
940 return (returncode(rpc_createerr.cf_stat,
941 &rpc_createerr.cf_error));
945 /* Check that the server (nfsd) responds on the port we have chosen. */
946 clp = clnt_tli_create(RPC_ANYFD, nconf, &nfs_nb, NFS_PROGRAM, nfsvers,
949 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
950 hostp, spec, clnt_spcreateerror("nfsd: RPCPROG_NFS"));
951 return (returncode(rpc_createerr.cf_stat,
952 &rpc_createerr.cf_error));
954 if (sotype == SOCK_DGRAM && noconn == 0) {
956 * Use connect(), to match what the kernel does. This
957 * catches cases where the server responds from the
958 * wrong source address.
961 if (!clnt_control(clp, CLSET_CONNECT, (char *)&doconnect)) {
963 snprintf(errbuf, sizeof errbuf,
964 "[%s] %s:%s: CLSET_CONNECT failed", netid, hostp,
966 return (TRYRET_LOCALERR);
972 stat = clnt_call(clp, NFSPROC_NULL, (xdrproc_t)xdr_void, NULL,
973 (xdrproc_t)xdr_void, NULL, try);
974 if (stat != RPC_SUCCESS) {
975 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
980 clnt_geterr(clp, &rpcerr);
981 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
982 hostp, spec, clnt_sperror(clp, "NFSPROC_NULL"));
984 return (returncode(stat, &rpcerr));
989 * For NFSv4, there is no mount protocol.
991 if (trymntmode == V4) {
993 * Store the server address in nfsargsp, making
994 * sure to copy any locally allocated structures.
996 addrlen = nfs_nb.len;
997 addr = malloc(addrlen);
1000 bcopy(nfs_nb.buf, addr, addrlen);
1002 build_iovec(iov, iovlen, "addr", addr, addrlen);
1003 secname = sec_num_to_name(secflavor);
1004 if (secname != NULL)
1005 build_iovec(iov, iovlen, "sec", secname, (size_t)-1);
1006 build_iovec(iov, iovlen, "nfsv4", NULL, 0);
1007 build_iovec(iov, iovlen, "dirpath", spec, (size_t)-1);
1009 return (TRYRET_SUCCESS);
1012 /* Send the MOUNTPROC_MNT RPC to get the root filehandle. */
1015 clp = clnt_tp_create(hostp, MOUNTPROG, mntvers, nconf_mnt);
1017 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1018 hostp, spec, clnt_spcreateerror("RPCMNT: clnt_create"));
1019 return (returncode(rpc_createerr.cf_stat,
1020 &rpc_createerr.cf_error));
1022 clp->cl_auth = authsys_create_default();
1023 nfhret.auth = secflavor;
1024 nfhret.vers = mntvers;
1025 stat = clnt_call(clp, MOUNTPROC_MNT, (xdrproc_t)xdr_dir, spec,
1026 (xdrproc_t)xdr_fh, &nfhret,
1028 auth_destroy(clp->cl_auth);
1029 if (stat != RPC_SUCCESS) {
1030 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
1035 clnt_geterr(clp, &rpcerr);
1036 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1037 hostp, spec, clnt_sperror(clp, "RPCPROG_MNT"));
1039 return (returncode(stat, &rpcerr));
1043 if (nfhret.stat != 0) {
1044 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1045 hostp, spec, strerror(nfhret.stat));
1046 return (TRYRET_REMOTEERR);
1050 * Store the filehandle and server address in nfsargsp, making
1051 * sure to copy any locally allocated structures.
1053 addrlen = nfs_nb.len;
1054 addr = malloc(addrlen);
1055 fhsize = nfhret.fhsize;
1056 fh = malloc(fhsize);
1057 if (addr == NULL || fh == NULL)
1059 bcopy(nfs_nb.buf, addr, addrlen);
1060 bcopy(nfhret.nfh, fh, fhsize);
1062 build_iovec(iov, iovlen, "addr", addr, addrlen);
1063 build_iovec(iov, iovlen, "fh", fh, fhsize);
1064 secname = sec_num_to_name(nfhret.auth);
1066 build_iovec(iov, iovlen, "sec", secname, (size_t)-1);
1068 build_iovec(iov, iovlen, "nfsv3", NULL, 0);
1070 return (TRYRET_SUCCESS);
1074 * Catagorise a RPC return status and error into an `enum tryret'
1078 returncode(enum clnt_stat stat, struct rpc_err *rpcerr)
1082 return (TRYRET_TIMEOUT);
1083 case RPC_PMAPFAILURE:
1084 case RPC_PROGNOTREGISTERED:
1085 case RPC_PROGVERSMISMATCH:
1086 /* XXX, these can be local or remote. */
1089 return (TRYRET_REMOTEERR);
1090 case RPC_SYSTEMERROR:
1091 switch (rpcerr->re_errno) {
1093 return (TRYRET_TIMEOUT);
1097 return (TRYRET_REMOTEERR);
1103 return (TRYRET_LOCALERR);
1107 * Look up a netid based on an address family and socket type.
1108 * `af' is the address family, and `sotype' is SOCK_DGRAM or SOCK_STREAM.
1110 * XXX there should be a library function for this.
1113 netidbytype(int af, int sotype)
1115 struct nc_protos *p;
1117 for (p = nc_protos; p->netid != NULL; p++) {
1118 if (af != p->af || sotype != p->sotype)
1126 * Look up a netconfig entry based on a netid, and cache the result so
1127 * that we don't need to remember to call freenetconfigent().
1129 * Otherwise it behaves just like getnetconfigent(), so nc_*error()
1132 static struct netconfig *
1133 getnetconf_cached(const char *netid)
1135 static struct nc_entry {
1136 struct netconfig *nconf;
1137 struct nc_entry *next;
1140 struct netconfig *nconf;
1142 for (p = head; p != NULL; p = p->next)
1143 if (strcmp(netid, p->nconf->nc_netid) == 0)
1146 if ((nconf = getnetconfigent(netid)) == NULL)
1148 if ((p = malloc(sizeof(*p))) == NULL)
1158 * xdr routines for mount rpc's
1161 xdr_dir(XDR *xdrsp, char *dirp)
1163 return (xdr_string(xdrsp, &dirp, MNTPATHLEN));
1167 xdr_fh(XDR *xdrsp, struct nfhret *np)
1170 long auth, authcnt, authfnd = 0;
1172 if (!xdr_u_long(xdrsp, &np->stat))
1178 np->fhsize = NFS_FHSIZE;
1179 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFS_FHSIZE));
1181 if (!xdr_long(xdrsp, &np->fhsize))
1183 if (np->fhsize <= 0 || np->fhsize > NFS3_FHSIZE)
1185 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize))
1187 if (!xdr_long(xdrsp, &authcnt))
1189 for (i = 0; i < authcnt; i++) {
1190 if (!xdr_long(xdrsp, &auth))
1192 if (np->auth == -1) {
1195 } else if (auth == np->auth) {
1200 * Some servers, such as DEC's OSF/1 return a nil authenticator
1201 * list to indicate RPCAUTH_UNIX.
1203 if (authcnt == 0 && np->auth == -1)
1204 np->auth = AUTH_SYS;
1205 if (!authfnd && (authcnt > 0 || np->auth != AUTH_SYS))
1215 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
1216 "usage: mount_nfs [-23bcdiLlNPsTU] [-a maxreadahead] [-D deadthresh]",
1217 " [-g maxgroups] [-I readdirsize] [-o options] [-R retrycnt]",
1218 " [-r readsize] [-t timeout] [-w writesize] [-x retrans]",
1219 " rhost:path node");