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, int mntflags);
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[])
152 int mntflags, num, iovlen;
154 char *name, *p, *spec, *fstype;
155 char mntpath[MAXPATHLEN], errmsg[255];
156 char hostname[MAXHOSTNAMELEN + 1], *gssname, gssn[MAXHOSTNAMELEN + 50];
161 memset(errmsg, 0, sizeof(errmsg));
164 fstype = strrchr(argv[0], '_');
166 errx(EX_USAGE, "argv[0] must end in _fstype");
170 while ((c = getopt(argc, argv,
171 "23a:bcdD:g:I:iLlNo:PR:r:sTt:w:x:U")) != -1)
180 printf("-a deprecated, use -o readahead=<value>\n");
181 build_iovec(&iov, &iovlen, "readahead", optarg, (size_t)-1);
187 printf("-c deprecated, use -o noconn\n");
188 build_iovec(&iov, &iovlen, "noconn", NULL, 0);
192 printf("-D deprecated, use -o deadthresh=<value>\n");
193 build_iovec(&iov, &iovlen, "deadthresh", optarg, (size_t)-1);
196 printf("-d deprecated, use -o dumbtimer");
197 build_iovec(&iov, &iovlen, "dumbtimer", NULL, 0);
200 printf("-g deprecated, use -o maxgroups");
201 num = strtol(optarg, &p, 10);
203 errx(1, "illegal -g value -- %s", optarg);
204 //set_rpc_maxgrouplist(num);
205 build_iovec(&iov, &iovlen, "maxgroups", optarg, (size_t)-1);
208 printf("-I deprecated, use -o readdirsize=<value>\n");
209 build_iovec(&iov, &iovlen, "readdirsize", optarg, (size_t)-1);
212 printf("-i deprecated, use -o intr\n");
213 build_iovec(&iov, &iovlen, "intr", NULL, 0);
216 printf("-L deprecated, use -o nolockd\n");
217 build_iovec(&iov, &iovlen, "nolockd", NULL, 0);
220 printf("-l deprecated, -o rdirplus\n");
221 build_iovec(&iov, &iovlen, "rdirplus", NULL, 0);
224 printf("-N deprecated, do not specify -o resvport\n");
227 int pass_flag_to_nmount;
231 char *pnextopt = NULL;
233 pass_flag_to_nmount = 1;
234 pnextopt = strchr(opt, ',');
235 if (pnextopt != NULL) {
239 pval = strchr(opt, '=');
244 if (strcmp(opt, "bg") == 0) {
246 pass_flag_to_nmount=0;
247 } else if (strcmp(opt, "fg") == 0) {
248 /* same as not specifying -o bg */
249 pass_flag_to_nmount=0;
250 } else if (strcmp(opt, "gssname") == 0) {
251 pass_flag_to_nmount = 0;
253 } else if (strcmp(opt, "mntudp") == 0) {
255 nfsproto = IPPROTO_UDP;
256 } else if (strcmp(opt, "udp") == 0) {
257 nfsproto = IPPROTO_UDP;
258 } else if (strcmp(opt, "tcp") == 0) {
259 nfsproto = IPPROTO_TCP;
260 } else if (strcmp(opt, "noinet4") == 0) {
261 pass_flag_to_nmount=0;
262 opflags |= OF_NOINET4;
263 } else if (strcmp(opt, "noinet6") == 0) {
264 pass_flag_to_nmount=0;
265 opflags |= OF_NOINET6;
266 } else if (strcmp(opt, "noconn") == 0) {
268 } else if (strcmp(opt, "nfsv2") == 0) {
269 pass_flag_to_nmount=0;
271 } else if (strcmp(opt, "nfsv3") == 0) {
273 } else if (strcmp(opt, "nfsv4") == 0) {
274 pass_flag_to_nmount=0;
277 nfsproto = IPPROTO_TCP;
278 if (portspec == NULL)
280 } else if (strcmp(opt, "port") == 0) {
281 pass_flag_to_nmount=0;
282 asprintf(&portspec, "%d",
284 if (portspec == NULL)
286 } else if (strcmp(opt, "principal") == 0) {
288 } else if (strcmp(opt, "sec") == 0) {
290 * Don't add this option to
291 * the iovec yet - we will
292 * negotiate which sec flavor
293 * to use with the remote
296 pass_flag_to_nmount=0;
297 secflavor = sec_name_to_num(val);
300 "illegal sec value -- %s",
303 } else if (strcmp(opt, "retrycnt") == 0) {
304 pass_flag_to_nmount=0;
305 num = strtol(val, &p, 10);
307 errx(1, "illegal retrycnt value -- %s", val);
309 } else if (strcmp(opt, "maxgroups") == 0) {
310 num = strtol(val, &p, 10);
312 errx(1, "illegal maxgroups value -- %s", val);
313 //set_rpc_maxgrouplist(num);
315 if (pass_flag_to_nmount)
316 build_iovec(&iov, &iovlen, opt, val,
323 /* obsolete for -o noresvport now default */
324 printf("-P deprecated, use -o noresvport\n");
325 build_iovec(&iov, &iovlen, "noresvport", NULL, 0);
328 printf("-R deprecated, use -o retrycnt=<retrycnt>\n");
329 num = strtol(optarg, &p, 10);
331 errx(1, "illegal -R value -- %s", optarg);
335 printf("-r deprecated, use -o rsize=<rsize>\n");
336 build_iovec(&iov, &iovlen, "rsize", optarg, (size_t)-1);
339 printf("-s deprecated, use -o soft\n");
340 build_iovec(&iov, &iovlen, "soft", NULL, 0);
343 nfsproto = IPPROTO_TCP;
344 printf("-T deprecated, use -o tcp\n");
347 printf("-t deprecated, use -o timeout=<value>\n");
348 build_iovec(&iov, &iovlen, "timeout", optarg, (size_t)-1);
351 printf("-w deprecated, use -o wsize=<value>\n");
352 build_iovec(&iov, &iovlen, "wsize", optarg, (size_t)-1);
355 printf("-x deprecated, use -o retrans=<value>\n");
356 build_iovec(&iov, &iovlen, "retrans", optarg, (size_t)-1);
359 printf("-U deprecated, use -o mntudp\n");
361 nfsproto = IPPROTO_UDP;
362 build_iovec(&iov, &iovlen, "mntudp", NULL, 0);
380 /* The default is to keep retrying forever. */
384 * If the fstye is "oldnfs", run the old NFS client unless the
385 * "nfsv4" option was specified.
387 if (strcmp(fstype, "nfs") == 0) {
388 if (modfind("nfscl") < 0) {
389 /* Not present in kernel, try loading it */
390 if (kldload("nfscl") < 0 ||
391 modfind("nfscl") < 0)
392 errx(1, "nfscl is not available");
397 * Add the fqdn to the gssname, as required.
399 if (gssname != NULL) {
400 if (strchr(gssname, '@') == NULL &&
401 gethostname(hostname, MAXHOSTNAMELEN) == 0) {
402 snprintf(gssn, sizeof (gssn), "%s@%s", gssname,
406 build_iovec(&iov, &iovlen, "gssname", gssname,
407 strlen(gssname) + 1);
410 if (!getnfsargs(spec, &iov, &iovlen))
413 /* resolve the mountpoint with realpath(3) */
414 if (checkpath(name, mntpath) != 0)
415 err(1, "%s", mntpath);
417 build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1);
418 build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1);
419 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
423 * Backwards compatibility routines for older kernels.
424 * Remove this and fallback_mount() code when we do not need to support
425 * NFS mounts against older kernels which still need
426 * struct nfs_args to be passed in via nmount().
428 osversion = getosreldate();
429 if (osversion >= 702100) {
430 if (nmount(iov, iovlen, mntflags))
431 err(1, "%s, %s", mntpath, errmsg);
433 if (fallback_mount(iov, iovlen, mntflags))
434 err(1, "%s, %s", mntpath, errmsg);
441 findopt(struct iovec *iov, int iovlen, const char *name,
442 char **valuep, int *lenp)
446 for (i = 0; i < iovlen/2; i++, iov += 2) {
447 if (strcmp(name, iov[0].iov_base) == 0) {
449 *valuep = iov[1].iov_base;
451 *lenp = iov[1].iov_len;
459 copyopt(struct iovec **newiov, int *newiovlen,
460 struct iovec *iov, int iovlen, const char *name)
465 if (findopt(iov, iovlen, name, &value, &len) == 0)
466 build_iovec(newiov, newiovlen, name, value, len);
470 * XXX: This function is provided for backwards
471 * compatibility with older kernels which did not support
472 * passing NFS mount options to nmount() as individual
473 * parameters. It should be eventually be removed.
476 fallback_mount(struct iovec *iov, int iovlen, int mntflags)
478 struct nfs_args args = {
479 .version = NFS_ARGSVERSION,
481 .addrlen = sizeof (struct sockaddr_in),
482 .sotype = SOCK_STREAM,
486 .flags = NFSMNT_RESVPORT,
489 .readdirsize = NFS_READDIRSIZE,
491 .retrans = NFS_RETRANS,
492 .maxgrouplist = NFS_MAXGRPS,
493 .readahead = NFS_DEFRAHEAD,
494 .wcommitsize = 0, /* was: NQ_DEFLEASE */
495 .deadthresh = NFS_MAXDEADTHRESH, /* was: NQ_DEADTHRESH */
498 .acregmin = NFS_MINATTRTIMO,
499 .acregmax = NFS_MAXATTRTIMO,
500 .acdirmin = NFS_MINDIRATTRTIMO,
501 .acdirmax = NFS_MAXDIRATTRTIMO,
505 struct iovec *newiov;
508 if (findopt(iov, iovlen, "dumbtimer", NULL, NULL) == 0)
509 args.flags |= NFSMNT_DUMBTIMR;
510 if (findopt(iov, iovlen, "noconn", NULL, NULL) == 0)
511 args.flags |= NFSMNT_NOCONN;
512 if (findopt(iov, iovlen, "conn", NULL, NULL) == 0)
513 args.flags |= NFSMNT_NOCONN;
514 if (findopt(iov, iovlen, "nolockd", NULL, NULL) == 0)
515 args.flags |= NFSMNT_NOLOCKD;
516 if (findopt(iov, iovlen, "lockd", NULL, NULL) == 0)
517 args.flags &= ~NFSMNT_NOLOCKD;
518 if (findopt(iov, iovlen, "intr", NULL, NULL) == 0)
519 args.flags |= NFSMNT_INT;
520 if (findopt(iov, iovlen, "rdirplus", NULL, NULL) == 0)
521 args.flags |= NFSMNT_RDIRPLUS;
522 if (findopt(iov, iovlen, "resvport", NULL, NULL) == 0)
523 args.flags |= NFSMNT_RESVPORT;
524 if (findopt(iov, iovlen, "noresvport", NULL, NULL) == 0)
525 args.flags &= ~NFSMNT_RESVPORT;
526 if (findopt(iov, iovlen, "soft", NULL, NULL) == 0)
527 args.flags |= NFSMNT_SOFT;
528 if (findopt(iov, iovlen, "hard", NULL, NULL) == 0)
529 args.flags &= ~NFSMNT_SOFT;
530 if (findopt(iov, iovlen, "mntudp", NULL, NULL) == 0)
531 args.sotype = SOCK_DGRAM;
532 if (findopt(iov, iovlen, "udp", NULL, NULL) == 0)
533 args.sotype = SOCK_DGRAM;
534 if (findopt(iov, iovlen, "tcp", NULL, NULL) == 0)
535 args.sotype = SOCK_STREAM;
536 if (findopt(iov, iovlen, "nfsv3", NULL, NULL) == 0)
537 args.flags |= NFSMNT_NFSV3;
538 if (findopt(iov, iovlen, "readdirsize", &opt, NULL) == 0) {
540 errx(1, "illegal readdirsize");
542 ret = sscanf(opt, "%d", &args.readdirsize);
543 if (ret != 1 || args.readdirsize <= 0) {
544 errx(1, "illegal readdirsize: %s", opt);
546 args.flags |= NFSMNT_READDIRSIZE;
548 if (findopt(iov, iovlen, "readahead", &opt, NULL) == 0) {
550 errx(1, "illegal readahead");
552 ret = sscanf(opt, "%d", &args.readahead);
553 if (ret != 1 || args.readahead <= 0) {
554 errx(1, "illegal readahead: %s", opt);
556 args.flags |= NFSMNT_READAHEAD;
558 if (findopt(iov, iovlen, "wsize", &opt, NULL) == 0) {
560 errx(1, "illegal wsize");
562 ret = sscanf(opt, "%d", &args.wsize);
563 if (ret != 1 || args.wsize <= 0) {
564 errx(1, "illegal wsize: %s", opt);
566 args.flags |= NFSMNT_WSIZE;
568 if (findopt(iov, iovlen, "rsize", &opt, NULL) == 0) {
570 errx(1, "illegal rsize");
572 ret = sscanf(opt, "%d", &args.rsize);
573 if (ret != 1 || args.rsize <= 0) {
574 errx(1, "illegal wsize: %s", opt);
576 args.flags |= NFSMNT_RSIZE;
578 if (findopt(iov, iovlen, "retrans", &opt, NULL) == 0) {
580 errx(1, "illegal retrans");
582 ret = sscanf(opt, "%d", &args.retrans);
583 if (ret != 1 || args.retrans <= 0) {
584 errx(1, "illegal retrans: %s", opt);
586 args.flags |= NFSMNT_RETRANS;
588 if (findopt(iov, iovlen, "acregmin", &opt, NULL) == 0) {
589 ret = sscanf(opt, "%d", &args.acregmin);
590 if (ret != 1 || args.acregmin < 0) {
591 errx(1, "illegal acregmin: %s", opt);
593 args.flags |= NFSMNT_ACREGMIN;
595 if (findopt(iov, iovlen, "acregmax", &opt, NULL) == 0) {
596 ret = sscanf(opt, "%d", &args.acregmax);
597 if (ret != 1 || args.acregmax < 0) {
598 errx(1, "illegal acregmax: %s", opt);
600 args.flags |= NFSMNT_ACREGMAX;
602 if (findopt(iov, iovlen, "acdirmin", &opt, NULL) == 0) {
603 ret = sscanf(opt, "%d", &args.acdirmin);
604 if (ret != 1 || args.acdirmin < 0) {
605 errx(1, "illegal acdirmin: %s", opt);
607 args.flags |= NFSMNT_ACDIRMIN;
609 if (findopt(iov, iovlen, "acdirmax", &opt, NULL) == 0) {
610 ret = sscanf(opt, "%d", &args.acdirmax);
611 if (ret != 1 || args.acdirmax < 0) {
612 errx(1, "illegal acdirmax: %s", opt);
614 args.flags |= NFSMNT_ACDIRMAX;
616 if (findopt(iov, iovlen, "wcommitsize", &opt, NULL) == 0) {
617 ret = sscanf(opt, "%d", &args.wcommitsize);
618 if (ret != 1 || args.wcommitsize < 0) {
619 errx(1, "illegal wcommitsize: %s", opt);
621 args.flags |= NFSMNT_WCOMMITSIZE;
623 if (findopt(iov, iovlen, "deadthresh", &opt, NULL) == 0) {
624 ret = sscanf(opt, "%d", &args.deadthresh);
625 if (ret != 1 || args.deadthresh <= 0) {
626 errx(1, "illegal deadthresh: %s", opt);
628 args.flags |= NFSMNT_DEADTHRESH;
630 if (findopt(iov, iovlen, "timeout", &opt, NULL) == 0) {
631 ret = sscanf(opt, "%d", &args.timeo);
632 if (ret != 1 || args.timeo <= 0) {
633 errx(1, "illegal timeout: %s", opt);
635 args.flags |= NFSMNT_TIMEO;
637 if (findopt(iov, iovlen, "maxgroups", &opt, NULL) == 0) {
638 ret = sscanf(opt, "%d", &args.maxgrouplist);
639 if (ret != 1 || args.timeo <= 0) {
640 errx(1, "illegal maxgroups: %s", opt);
642 args.flags |= NFSMNT_MAXGRPS;
644 if (findopt(iov, iovlen, "addr", &opt,
645 &args.addrlen) == 0) {
646 args.addr = (struct sockaddr *) opt;
648 if (findopt(iov, iovlen, "fh", &opt, &args.fhsize) == 0) {
651 if (findopt(iov, iovlen, "hostname", &args.hostname,
654 if (args.hostname == NULL) {
655 errx(1, "Invalid hostname");
661 build_iovec(&newiov, &newiovlen, "nfs_args", &args, sizeof(args));
662 copyopt(&newiov, &newiovlen, iov, iovlen, "fstype");
663 copyopt(&newiov, &newiovlen, iov, iovlen, "fspath");
664 copyopt(&newiov, &newiovlen, iov, iovlen, "errmsg");
666 return nmount(newiov, newiovlen, mntflags);
670 sec_name_to_num(char *sec)
672 if (!strcmp(sec, "krb5"))
673 return (RPCSEC_GSS_KRB5);
674 if (!strcmp(sec, "krb5i"))
675 return (RPCSEC_GSS_KRB5I);
676 if (!strcmp(sec, "krb5p"))
677 return (RPCSEC_GSS_KRB5P);
678 if (!strcmp(sec, "sys"))
684 sec_num_to_name(int flavor)
687 case RPCSEC_GSS_KRB5:
689 case RPCSEC_GSS_KRB5I:
691 case RPCSEC_GSS_KRB5P:
700 getnfsargs(char *spec, struct iovec **iov, int *iovlen)
702 struct addrinfo hints, *ai_nfs, *ai;
704 int ecode, speclen, remoteerr, offset, have_bracket = 0;
705 char *hostp, *delimp, *errstr;
707 static char nam[MNAMELEN + 1], pname[MAXHOSTNAMELEN + 5];
709 if (*spec == '[' && (delimp = strchr(spec + 1, ']')) != NULL &&
710 *(delimp + 1) == ':') {
714 } else if ((delimp = strrchr(spec, ':')) != NULL) {
717 } else if ((delimp = strrchr(spec, '@')) != NULL) {
718 warnx("path@server syntax is deprecated, use server:path");
721 warnx("no <host>:<dirpath> nfs-name");
727 * If there has been a trailing slash at mounttime it seems
728 * that some mountd implementations fail to remove the mount
729 * entries from their mountlist while unmounting.
731 for (speclen = strlen(spec);
732 speclen > 1 && spec[speclen - 1] == '/';
734 spec[speclen - 1] = '\0';
735 if (strlen(hostp) + strlen(spec) + 1 > MNAMELEN) {
736 warnx("%s:%s: %s", hostp, spec, strerror(ENAMETOOLONG));
739 /* Make both '@' and ':' notations equal */
740 if (*hostp != '\0') {
745 memmove(nam + offset, hostp, len);
747 nam[len + offset++] = ']';
748 nam[len + offset++] = ':';
749 memmove(nam + len + offset, spec, speclen);
750 nam[len + speclen + offset] = '\0';
754 * Handle an internet host address.
756 memset(&hints, 0, sizeof hints);
757 hints.ai_flags = AI_NUMERICHOST;
758 if (nfsproto == IPPROTO_TCP)
759 hints.ai_socktype = SOCK_STREAM;
760 else if (nfsproto == IPPROTO_UDP)
761 hints.ai_socktype = SOCK_DGRAM;
763 if (getaddrinfo(hostp, portspec, &hints, &ai_nfs) != 0) {
764 hints.ai_flags = AI_CANONNAME;
765 if ((ecode = getaddrinfo(hostp, portspec, &hints, &ai_nfs))
767 if (portspec == NULL)
768 errx(1, "%s: %s", hostp, gai_strerror(ecode));
770 errx(1, "%s:%s: %s", hostp, portspec,
771 gai_strerror(ecode));
776 * For a Kerberized nfs mount where the "principal"
777 * argument has not been set, add it here.
779 if (got_principal == 0 && secflavor >= 0 &&
780 secflavor != AUTH_SYS && ai_nfs->ai_canonname != NULL) {
781 snprintf(pname, sizeof (pname), "nfs@%s",
782 ai_nfs->ai_canonname);
783 build_iovec(iov, iovlen, "principal", pname,
788 ret = TRYRET_LOCALERR;
791 * Try each entry returned by getaddrinfo(). Note the
792 * occurrence of remote errors by setting `remoteerr'.
795 for (ai = ai_nfs; ai != NULL; ai = ai->ai_next) {
796 if ((ai->ai_family == AF_INET6) &&
797 (opflags & OF_NOINET6))
799 if ((ai->ai_family == AF_INET) &&
800 (opflags & OF_NOINET4))
802 ret = nfs_tryproto(ai, hostp, spec, &errstr, iov,
804 if (ret == TRYRET_SUCCESS)
806 if (ret != TRYRET_LOCALERR)
808 if ((opflags & ISBGRND) == 0)
809 fprintf(stderr, "%s\n", errstr);
811 if (ret == TRYRET_SUCCESS)
814 /* Exit if all errors were local. */
819 * If retrycnt == 0, we are to keep retrying forever.
820 * Otherwise decrement it, and exit if it hits zero.
822 if (retrycnt != 0 && --retrycnt == 0)
825 if ((opflags & (BGRND | ISBGRND)) == BGRND) {
826 warnx("Cannot immediately mount %s:%s, backgrounding",
829 if (daemon(0, 0) != 0)
834 freeaddrinfo(ai_nfs);
836 build_iovec(iov, iovlen, "hostname", nam, (size_t)-1);
837 /* Add mounted file system to PATH_MOUNTTAB */
838 if (!add_mtab(hostp, spec))
839 warnx("can't update %s for %s:%s", PATH_MOUNTTAB, hostp, spec);
844 * Try to set up the NFS arguments according to the address
845 * family, protocol (and possibly port) specified in `ai'.
847 * Returns TRYRET_SUCCESS if successful, or:
848 * TRYRET_TIMEOUT The server did not respond.
849 * TRYRET_REMOTEERR The server reported an error.
850 * TRYRET_LOCALERR Local failure.
852 * In all error cases, *errstr will be set to a statically-allocated string
853 * describing the error.
856 nfs_tryproto(struct addrinfo *ai, char *hostp, char *spec, char **errstr,
857 struct iovec **iov, int *iovlen)
859 static char errbuf[256];
860 struct sockaddr_storage nfs_ss;
861 struct netbuf nfs_nb;
862 struct nfhret nfhret;
864 struct rpc_err rpcerr;
866 struct netconfig *nconf, *nconf_mnt;
867 const char *netid, *netid_mnt;
869 int doconnect, nfsvers, mntvers, sotype;
871 enum mountmode trymntmode;
874 trymntmode = mountmode;
878 if (nfsproto == IPPROTO_TCP)
879 sotype = SOCK_STREAM;
880 else if (nfsproto == IPPROTO_UDP)
883 if ((netid = netidbytype(ai->ai_family, sotype)) == NULL) {
884 snprintf(errbuf, sizeof errbuf,
885 "af %d sotype %d not supported", ai->ai_family, sotype);
886 return (TRYRET_LOCALERR);
888 if ((nconf = getnetconf_cached(netid)) == NULL) {
889 snprintf(errbuf, sizeof errbuf, "%s: %s", netid, nc_sperror());
890 return (TRYRET_LOCALERR);
892 /* The RPCPROG_MNT netid may be different. */
897 if ((netid_mnt = netidbytype(ai->ai_family, SOCK_DGRAM))
899 snprintf(errbuf, sizeof errbuf,
900 "af %d sotype SOCK_DGRAM not supported",
902 return (TRYRET_LOCALERR);
904 if ((nconf_mnt = getnetconf_cached(netid_mnt)) == NULL) {
905 snprintf(errbuf, sizeof errbuf, "%s: %s", netid_mnt,
907 return (TRYRET_LOCALERR);
912 if (trymntmode == V4) {
914 } else if (trymntmode == V2) {
922 if (portspec != NULL) {
923 /* `ai' contains the complete nfsd sockaddr. */
924 nfs_nb.buf = ai->ai_addr;
925 nfs_nb.len = nfs_nb.maxlen = ai->ai_addrlen;
927 /* Ask the remote rpcbind. */
928 nfs_nb.buf = &nfs_ss;
929 nfs_nb.len = nfs_nb.maxlen = sizeof nfs_ss;
931 if (!rpcb_getaddr(NFS_PROGRAM, nfsvers, nconf, &nfs_nb,
933 if (rpc_createerr.cf_stat == RPC_PROGVERSMISMATCH &&
938 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s",
940 clnt_spcreateerror("RPCPROG_NFS"));
941 return (returncode(rpc_createerr.cf_stat,
942 &rpc_createerr.cf_error));
946 /* Check that the server (nfsd) responds on the port we have chosen. */
947 clp = clnt_tli_create(RPC_ANYFD, nconf, &nfs_nb, NFS_PROGRAM, nfsvers,
950 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
951 hostp, spec, clnt_spcreateerror("nfsd: RPCPROG_NFS"));
952 return (returncode(rpc_createerr.cf_stat,
953 &rpc_createerr.cf_error));
955 if (sotype == SOCK_DGRAM && noconn == 0) {
957 * Use connect(), to match what the kernel does. This
958 * catches cases where the server responds from the
959 * wrong source address.
962 if (!clnt_control(clp, CLSET_CONNECT, (char *)&doconnect)) {
964 snprintf(errbuf, sizeof errbuf,
965 "[%s] %s:%s: CLSET_CONNECT failed", netid, hostp,
967 return (TRYRET_LOCALERR);
973 stat = clnt_call(clp, NFSPROC_NULL, (xdrproc_t)xdr_void, NULL,
974 (xdrproc_t)xdr_void, NULL, try);
975 if (stat != RPC_SUCCESS) {
976 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
981 clnt_geterr(clp, &rpcerr);
982 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
983 hostp, spec, clnt_sperror(clp, "NFSPROC_NULL"));
985 return (returncode(stat, &rpcerr));
990 * For NFSv4, there is no mount protocol.
992 if (trymntmode == V4) {
994 * Store the server address in nfsargsp, making
995 * sure to copy any locally allocated structures.
997 addrlen = nfs_nb.len;
998 addr = malloc(addrlen);
1001 bcopy(nfs_nb.buf, addr, addrlen);
1003 build_iovec(iov, iovlen, "addr", addr, addrlen);
1004 secname = sec_num_to_name(secflavor);
1005 if (secname != NULL)
1006 build_iovec(iov, iovlen, "sec", secname, (size_t)-1);
1007 build_iovec(iov, iovlen, "nfsv4", NULL, 0);
1008 build_iovec(iov, iovlen, "dirpath", spec, (size_t)-1);
1010 return (TRYRET_SUCCESS);
1013 /* Send the MOUNTPROC_MNT RPC to get the root filehandle. */
1016 clp = clnt_tp_create(hostp, MOUNTPROG, mntvers, nconf_mnt);
1018 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1019 hostp, spec, clnt_spcreateerror("RPCMNT: clnt_create"));
1020 return (returncode(rpc_createerr.cf_stat,
1021 &rpc_createerr.cf_error));
1023 clp->cl_auth = authsys_create_default();
1024 nfhret.auth = secflavor;
1025 nfhret.vers = mntvers;
1026 stat = clnt_call(clp, MOUNTPROC_MNT, (xdrproc_t)xdr_dir, spec,
1027 (xdrproc_t)xdr_fh, &nfhret,
1029 auth_destroy(clp->cl_auth);
1030 if (stat != RPC_SUCCESS) {
1031 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
1036 clnt_geterr(clp, &rpcerr);
1037 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1038 hostp, spec, clnt_sperror(clp, "RPCPROG_MNT"));
1040 return (returncode(stat, &rpcerr));
1044 if (nfhret.stat != 0) {
1045 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1046 hostp, spec, strerror(nfhret.stat));
1047 return (TRYRET_REMOTEERR);
1051 * Store the filehandle and server address in nfsargsp, making
1052 * sure to copy any locally allocated structures.
1054 addrlen = nfs_nb.len;
1055 addr = malloc(addrlen);
1056 fhsize = nfhret.fhsize;
1057 fh = malloc(fhsize);
1058 if (addr == NULL || fh == NULL)
1060 bcopy(nfs_nb.buf, addr, addrlen);
1061 bcopy(nfhret.nfh, fh, fhsize);
1063 build_iovec(iov, iovlen, "addr", addr, addrlen);
1064 build_iovec(iov, iovlen, "fh", fh, fhsize);
1065 secname = sec_num_to_name(nfhret.auth);
1067 build_iovec(iov, iovlen, "sec", secname, (size_t)-1);
1069 build_iovec(iov, iovlen, "nfsv3", NULL, 0);
1071 return (TRYRET_SUCCESS);
1075 * Catagorise a RPC return status and error into an `enum tryret'
1079 returncode(enum clnt_stat stat, struct rpc_err *rpcerr)
1083 return (TRYRET_TIMEOUT);
1084 case RPC_PMAPFAILURE:
1085 case RPC_PROGNOTREGISTERED:
1086 case RPC_PROGVERSMISMATCH:
1087 /* XXX, these can be local or remote. */
1090 return (TRYRET_REMOTEERR);
1091 case RPC_SYSTEMERROR:
1092 switch (rpcerr->re_errno) {
1094 return (TRYRET_TIMEOUT);
1098 return (TRYRET_REMOTEERR);
1104 return (TRYRET_LOCALERR);
1108 * Look up a netid based on an address family and socket type.
1109 * `af' is the address family, and `sotype' is SOCK_DGRAM or SOCK_STREAM.
1111 * XXX there should be a library function for this.
1114 netidbytype(int af, int sotype)
1116 struct nc_protos *p;
1118 for (p = nc_protos; p->netid != NULL; p++) {
1119 if (af != p->af || sotype != p->sotype)
1127 * Look up a netconfig entry based on a netid, and cache the result so
1128 * that we don't need to remember to call freenetconfigent().
1130 * Otherwise it behaves just like getnetconfigent(), so nc_*error()
1133 static struct netconfig *
1134 getnetconf_cached(const char *netid)
1136 static struct nc_entry {
1137 struct netconfig *nconf;
1138 struct nc_entry *next;
1141 struct netconfig *nconf;
1143 for (p = head; p != NULL; p = p->next)
1144 if (strcmp(netid, p->nconf->nc_netid) == 0)
1147 if ((nconf = getnetconfigent(netid)) == NULL)
1149 if ((p = malloc(sizeof(*p))) == NULL)
1159 * xdr routines for mount rpc's
1162 xdr_dir(XDR *xdrsp, char *dirp)
1164 return (xdr_string(xdrsp, &dirp, MNTPATHLEN));
1168 xdr_fh(XDR *xdrsp, struct nfhret *np)
1171 long auth, authcnt, authfnd = 0;
1173 if (!xdr_u_long(xdrsp, &np->stat))
1179 np->fhsize = NFS_FHSIZE;
1180 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFS_FHSIZE));
1182 if (!xdr_long(xdrsp, &np->fhsize))
1184 if (np->fhsize <= 0 || np->fhsize > NFS3_FHSIZE)
1186 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize))
1188 if (!xdr_long(xdrsp, &authcnt))
1190 for (i = 0; i < authcnt; i++) {
1191 if (!xdr_long(xdrsp, &auth))
1193 if (np->auth == -1) {
1196 } else if (auth == np->auth) {
1201 * Some servers, such as DEC's OSF/1 return a nil authenticator
1202 * list to indicate RPCAUTH_UNIX.
1204 if (authcnt == 0 && np->auth == -1)
1205 np->auth = AUTH_SYS;
1206 if (!authfnd && (authcnt > 0 || np->auth != AUTH_SYS))
1216 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
1217 "usage: mount_nfs [-23bcdiLlNPsTU] [-a maxreadahead] [-D deadthresh]",
1218 " [-g maxgroups] [-I readdirsize] [-o options] [-R retrycnt]",
1219 " [-r readsize] [-t timeout] [-w writesize] [-x retrans]",
1220 " rhost:path node");