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 int fallback_mount(struct iovec *iov, int iovlen, int mntflags);
134 int sec_name_to_num(char *sec);
135 char *sec_num_to_name(int num);
136 int getnfsargs(char *, struct iovec **iov, int *iovlen);
137 /* void set_rpc_maxgrouplist(int); */
138 struct netconfig *getnetconf_cached(const char *netid);
139 const char *netidbytype(int af, int sotype);
140 void usage(void) __dead2;
141 int xdr_dir(XDR *, char *);
142 int xdr_fh(XDR *, struct nfhret *);
143 enum tryret nfs_tryproto(struct addrinfo *ai, char *hostp, char *spec,
144 char **errstr, struct iovec **iov, int *iovlen);
145 enum tryret returncode(enum clnt_stat stat, struct rpc_err *rpcerr);
146 extern int getosreldate(void);
149 main(int argc, char *argv[])
153 int mntflags, num, iovlen;
155 char *name, *p, *spec, *fstype;
156 char mntpath[MAXPATHLEN], errmsg[255];
157 char hostname[MAXHOSTNAMELEN + 1], *gssname, gssn[MAXHOSTNAMELEN + 50];
162 memset(errmsg, 0, sizeof(errmsg));
165 fstype = strrchr(argv[0], '_');
167 errx(EX_USAGE, "argv[0] must end in _fstype");
171 while ((c = getopt(argc, argv,
172 "23a:bcdD:g:I:iLlNo:PR:r:sTt:w:x:U")) != -1)
181 printf("-a deprecated, use -o readhead=<value>\n");
182 build_iovec(&iov, &iovlen, "readahead", optarg, (size_t)-1);
188 printf("-c deprecated, use -o noconn\n");
189 build_iovec(&iov, &iovlen, "noconn", NULL, 0);
193 printf("-D deprecated, use -o deadthresh=<value>\n");
194 build_iovec(&iov, &iovlen, "deadthresh", optarg, (size_t)-1);
197 printf("-d deprecated, use -o dumbtimer");
198 build_iovec(&iov, &iovlen, "dumbtimer", NULL, 0);
201 printf("-g deprecated, use -o maxgroups");
202 num = strtol(optarg, &p, 10);
204 errx(1, "illegal -g value -- %s", optarg);
205 //set_rpc_maxgrouplist(num);
206 build_iovec(&iov, &iovlen, "maxgroups", optarg, (size_t)-1);
209 printf("-I deprecated, use -o readdirsize=<value>\n");
210 build_iovec(&iov, &iovlen, "readdirsize", optarg, (size_t)-1);
213 printf("-i deprecated, use -o intr\n");
214 build_iovec(&iov, &iovlen, "intr", NULL, 0);
217 printf("-i deprecated, use -o nolockd\n");
218 build_iovec(&iov, &iovlen, "nolockd", NULL, 0);
221 printf("-l deprecated, -o rdirplus\n");
222 build_iovec(&iov, &iovlen, "rdirplus", NULL, 0);
225 printf("-N deprecated, do not specify -o resvport\n");
228 int pass_flag_to_nmount;
232 char *pnextopt = NULL;
234 pass_flag_to_nmount = 1;
235 pnextopt = strchr(opt, ',');
236 if (pnextopt != NULL) {
240 pval = strchr(opt, '=');
245 if (strcmp(opt, "bg") == 0) {
247 pass_flag_to_nmount=0;
248 } else if (strcmp(opt, "fg") == 0) {
249 /* same as not specifying -o bg */
250 pass_flag_to_nmount=0;
251 } else if (strcmp(opt, "gssname") == 0) {
252 pass_flag_to_nmount = 0;
254 } else if (strcmp(opt, "mntudp") == 0) {
256 nfsproto = IPPROTO_UDP;
257 } else if (strcmp(opt, "udp") == 0) {
258 nfsproto = IPPROTO_UDP;
259 } else if (strcmp(opt, "tcp") == 0) {
260 nfsproto = IPPROTO_TCP;
261 } else if (strcmp(opt, "noinet4") == 0) {
262 pass_flag_to_nmount=0;
263 opflags |= OF_NOINET4;
264 } else if (strcmp(opt, "noinet6") == 0) {
265 pass_flag_to_nmount=0;
266 opflags |= OF_NOINET6;
267 } else if (strcmp(opt, "noconn") == 0) {
269 } else if (strcmp(opt, "nfsv2") == 0) {
270 pass_flag_to_nmount=0;
272 } else if (strcmp(opt, "nfsv3") == 0) {
274 } else if (strcmp(opt, "nfsv4") == 0) {
275 pass_flag_to_nmount=0;
278 nfsproto = IPPROTO_TCP;
279 if (portspec == NULL)
281 } else if (strcmp(opt, "port") == 0) {
282 pass_flag_to_nmount=0;
283 asprintf(&portspec, "%d",
285 if (portspec == NULL)
287 } else if (strcmp(opt, "principal") == 0) {
289 } else if (strcmp(opt, "sec") == 0) {
291 * Don't add this option to
292 * the iovec yet - we will
293 * negotiate which sec flavor
294 * to use with the remote
297 pass_flag_to_nmount=0;
298 secflavor = sec_name_to_num(val);
301 "illegal sec value -- %s",
304 } else if (strcmp(opt, "retrycnt") == 0) {
305 pass_flag_to_nmount=0;
306 num = strtol(val, &p, 10);
308 errx(1, "illegal retrycnt value -- %s", val);
310 } else if (strcmp(opt, "maxgroups") == 0) {
311 num = strtol(val, &p, 10);
313 errx(1, "illegal maxgroups value -- %s", val);
314 //set_rpc_maxgrouplist(num);
316 if (pass_flag_to_nmount)
317 build_iovec(&iov, &iovlen, opt, val,
324 /* obsolete for -o noresvport now default */
325 printf("-P deprecated, use -o noresvport\n");
326 build_iovec(&iov, &iovlen, "noresvport", NULL, 0);
329 printf("-R deprecated, use -o retrycnt=<retrycnt>\n");
330 num = strtol(optarg, &p, 10);
332 errx(1, "illegal -R value -- %s", optarg);
336 printf("-r deprecated, use -o rsize=<rsize>\n");
337 build_iovec(&iov, &iovlen, "rsize", optarg, (size_t)-1);
340 printf("-s deprecated, use -o soft\n");
341 build_iovec(&iov, &iovlen, "soft", NULL, 0);
344 nfsproto = IPPROTO_TCP;
345 printf("-T deprecated, use -o tcp\n");
348 printf("-t deprecated, use -o timeout=<value>\n");
349 build_iovec(&iov, &iovlen, "timeout", optarg, (size_t)-1);
352 printf("-w deprecated, use -o wsize=<value>\n");
353 build_iovec(&iov, &iovlen, "wsize", optarg, (size_t)-1);
356 printf("-x deprecated, use -o retrans=<value>\n");
357 build_iovec(&iov, &iovlen, "retrans", optarg, (size_t)-1);
360 printf("-U deprecated, use -o mntudp\n");
362 nfsproto = IPPROTO_UDP;
363 build_iovec(&iov, &iovlen, "mntudp", NULL, 0);
381 /* The default is to keep retrying forever. */
385 * If the experimental nfs subsystem is loaded into the kernel
386 * and the regular one is not, use it. Otherwise, use it if the
387 * fstype is set to "newnfs", either via "mount -t newnfs ..."
388 * or by specifying an nfsv4 mount.
390 if (modfind("nfscl") >= 0 && modfind("nfs") < 0) {
392 } else if (strcmp(fstype, "newnfs") == 0) {
393 if (modfind("nfscl") < 0) {
394 /* Not present in kernel, try loading it */
395 if (kldload("nfscl") < 0 ||
396 modfind("nfscl") < 0)
397 errx(1, "nfscl is not available");
402 * Add the fqdn to the gssname, as required.
404 if (gssname != NULL) {
405 if (strchr(gssname, '@') == NULL &&
406 gethostname(hostname, MAXHOSTNAMELEN) == 0) {
407 snprintf(gssn, sizeof (gssn), "%s@%s", gssname,
411 build_iovec(&iov, &iovlen, "gssname", gssname,
412 strlen(gssname) + 1);
415 if (!getnfsargs(spec, &iov, &iovlen))
418 /* resolve the mountpoint with realpath(3) */
419 (void)checkpath(name, mntpath);
421 build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1);
422 build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1);
423 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
427 * Backwards compatibility routines for older kernels.
428 * Remove this and fallback_mount() code when we do not need to support
429 * NFS mounts against older kernels which still need
430 * struct nfs_args to be passed in via nmount().
432 osversion = getosreldate();
433 if (osversion >= 702100) {
434 if (nmount(iov, iovlen, mntflags))
435 err(1, "%s, %s", mntpath, errmsg);
437 if (fallback_mount(iov, iovlen, mntflags))
438 err(1, "%s, %s", mntpath, errmsg);
445 findopt(struct iovec *iov, int iovlen, const char *name,
446 char **valuep, int *lenp)
450 for (i = 0; i < iovlen/2; i++, iov += 2) {
451 if (strcmp(name, iov[0].iov_base) == 0) {
453 *valuep = iov[1].iov_base;
455 *lenp = iov[1].iov_len;
463 copyopt(struct iovec **newiov, int *newiovlen,
464 struct iovec *iov, int iovlen, const char *name)
469 if (findopt(iov, iovlen, name, &value, &len) == 0)
470 build_iovec(newiov, newiovlen, name, value, len);
474 * XXX: This function is provided for backwards
475 * compatibility with older kernels which did not support
476 * passing NFS mount options to nmount() as individual
477 * parameters. It should be eventually be removed.
480 fallback_mount(struct iovec *iov, int iovlen, int mntflags)
482 struct nfs_args args = {
483 .version = NFS_ARGSVERSION,
485 .addrlen = sizeof (struct sockaddr_in),
486 .sotype = SOCK_STREAM,
490 .flags = NFSMNT_RESVPORT,
493 .readdirsize = NFS_READDIRSIZE,
495 .retrans = NFS_RETRANS,
496 .maxgrouplist = NFS_MAXGRPS,
497 .readahead = NFS_DEFRAHEAD,
498 .wcommitsize = 0, /* was: NQ_DEFLEASE */
499 .deadthresh = NFS_MAXDEADTHRESH, /* was: NQ_DEADTHRESH */
502 .acregmin = NFS_MINATTRTIMO,
503 .acregmax = NFS_MAXATTRTIMO,
504 .acdirmin = NFS_MINDIRATTRTIMO,
505 .acdirmax = NFS_MAXDIRATTRTIMO,
509 struct iovec *newiov;
512 if (findopt(iov, iovlen, "dumbtimer", NULL, NULL) == 0)
513 args.flags |= NFSMNT_DUMBTIMR;
514 if (findopt(iov, iovlen, "noconn", NULL, NULL) == 0)
515 args.flags |= NFSMNT_NOCONN;
516 if (findopt(iov, iovlen, "conn", NULL, NULL) == 0)
517 args.flags |= NFSMNT_NOCONN;
518 if (findopt(iov, iovlen, "nolockd", NULL, NULL) == 0)
519 args.flags |= NFSMNT_NOLOCKD;
520 if (findopt(iov, iovlen, "lockd", NULL, NULL) == 0)
521 args.flags &= ~NFSMNT_NOLOCKD;
522 if (findopt(iov, iovlen, "intr", NULL, NULL) == 0)
523 args.flags |= NFSMNT_INT;
524 if (findopt(iov, iovlen, "rdirplus", NULL, NULL) == 0)
525 args.flags |= NFSMNT_RDIRPLUS;
526 if (findopt(iov, iovlen, "resvport", NULL, NULL) == 0)
527 args.flags |= NFSMNT_RESVPORT;
528 if (findopt(iov, iovlen, "noresvport", NULL, NULL) == 0)
529 args.flags &= ~NFSMNT_RESVPORT;
530 if (findopt(iov, iovlen, "soft", NULL, NULL) == 0)
531 args.flags |= NFSMNT_SOFT;
532 if (findopt(iov, iovlen, "hard", NULL, NULL) == 0)
533 args.flags &= ~NFSMNT_SOFT;
534 if (findopt(iov, iovlen, "mntudp", NULL, NULL) == 0)
535 args.sotype = SOCK_DGRAM;
536 if (findopt(iov, iovlen, "udp", NULL, NULL) == 0)
537 args.sotype = SOCK_DGRAM;
538 if (findopt(iov, iovlen, "tcp", NULL, NULL) == 0)
539 args.sotype = SOCK_STREAM;
540 if (findopt(iov, iovlen, "nfsv3", NULL, NULL) == 0)
541 args.flags |= NFSMNT_NFSV3;
542 if (findopt(iov, iovlen, "readdirsize", &opt, NULL) == 0) {
544 errx(1, "illegal readdirsize");
546 ret = sscanf(opt, "%d", &args.readdirsize);
547 if (ret != 1 || args.readdirsize <= 0) {
548 errx(1, "illegal readdirsize: %s", opt);
550 args.flags |= NFSMNT_READDIRSIZE;
552 if (findopt(iov, iovlen, "readahead", &opt, NULL) == 0) {
554 errx(1, "illegal readahead");
556 ret = sscanf(opt, "%d", &args.readahead);
557 if (ret != 1 || args.readahead <= 0) {
558 errx(1, "illegal readahead: %s", opt);
560 args.flags |= NFSMNT_READAHEAD;
562 if (findopt(iov, iovlen, "wsize", &opt, NULL) == 0) {
564 errx(1, "illegal wsize");
566 ret = sscanf(opt, "%d", &args.wsize);
567 if (ret != 1 || args.wsize <= 0) {
568 errx(1, "illegal wsize: %s", opt);
570 args.flags |= NFSMNT_WSIZE;
572 if (findopt(iov, iovlen, "rsize", &opt, NULL) == 0) {
574 errx(1, "illegal rsize");
576 ret = sscanf(opt, "%d", &args.rsize);
577 if (ret != 1 || args.rsize <= 0) {
578 errx(1, "illegal wsize: %s", opt);
580 args.flags |= NFSMNT_RSIZE;
582 if (findopt(iov, iovlen, "retrans", &opt, NULL) == 0) {
584 errx(1, "illegal retrans");
586 ret = sscanf(opt, "%d", &args.retrans);
587 if (ret != 1 || args.retrans <= 0) {
588 errx(1, "illegal retrans: %s", opt);
590 args.flags |= NFSMNT_RETRANS;
592 if (findopt(iov, iovlen, "acregmin", &opt, NULL) == 0) {
593 ret = sscanf(opt, "%d", &args.acregmin);
594 if (ret != 1 || args.acregmin < 0) {
595 errx(1, "illegal acregmin: %s", opt);
597 args.flags |= NFSMNT_ACREGMIN;
599 if (findopt(iov, iovlen, "acregmax", &opt, NULL) == 0) {
600 ret = sscanf(opt, "%d", &args.acregmax);
601 if (ret != 1 || args.acregmax < 0) {
602 errx(1, "illegal acregmax: %s", opt);
604 args.flags |= NFSMNT_ACREGMAX;
606 if (findopt(iov, iovlen, "acdirmin", &opt, NULL) == 0) {
607 ret = sscanf(opt, "%d", &args.acdirmin);
608 if (ret != 1 || args.acdirmin < 0) {
609 errx(1, "illegal acdirmin: %s", opt);
611 args.flags |= NFSMNT_ACDIRMIN;
613 if (findopt(iov, iovlen, "acdirmax", &opt, NULL) == 0) {
614 ret = sscanf(opt, "%d", &args.acdirmax);
615 if (ret != 1 || args.acdirmax < 0) {
616 errx(1, "illegal acdirmax: %s", opt);
618 args.flags |= NFSMNT_ACDIRMAX;
620 if (findopt(iov, iovlen, "deadthresh", &opt, NULL) == 0) {
621 ret = sscanf(opt, "%d", &args.deadthresh);
622 if (ret != 1 || args.deadthresh <= 0) {
623 errx(1, "illegal deadthresh: %s", opt);
625 args.flags |= NFSMNT_DEADTHRESH;
627 if (findopt(iov, iovlen, "timeout", &opt, NULL) == 0) {
628 ret = sscanf(opt, "%d", &args.timeo);
629 if (ret != 1 || args.timeo <= 0) {
630 errx(1, "illegal timeout: %s", opt);
632 args.flags |= NFSMNT_TIMEO;
634 if (findopt(iov, iovlen, "maxgroups", &opt, NULL) == 0) {
635 ret = sscanf(opt, "%d", &args.maxgrouplist);
636 if (ret != 1 || args.timeo <= 0) {
637 errx(1, "illegal maxgroups: %s", opt);
639 args.flags |= NFSMNT_MAXGRPS;
641 if (findopt(iov, iovlen, "addr", &opt,
642 &args.addrlen) == 0) {
643 args.addr = (struct sockaddr *) opt;
645 if (findopt(iov, iovlen, "fh", &opt, &args.fhsize) == 0) {
648 if (findopt(iov, iovlen, "hostname", &args.hostname,
651 if (args.hostname == NULL) {
652 errx(1, "Invalid hostname");
658 build_iovec(&newiov, &newiovlen, "nfs_args", &args, sizeof(args));
659 copyopt(&newiov, &newiovlen, iov, iovlen, "fstype");
660 copyopt(&newiov, &newiovlen, iov, iovlen, "fspath");
661 copyopt(&newiov, &newiovlen, iov, iovlen, "errmsg");
663 return nmount(newiov, newiovlen, mntflags);
667 sec_name_to_num(char *sec)
669 if (!strcmp(sec, "krb5"))
670 return (RPCSEC_GSS_KRB5);
671 if (!strcmp(sec, "krb5i"))
672 return (RPCSEC_GSS_KRB5I);
673 if (!strcmp(sec, "krb5p"))
674 return (RPCSEC_GSS_KRB5P);
675 if (!strcmp(sec, "sys"))
681 sec_num_to_name(int flavor)
684 case RPCSEC_GSS_KRB5:
686 case RPCSEC_GSS_KRB5I:
688 case RPCSEC_GSS_KRB5P:
697 getnfsargs(char *spec, struct iovec **iov, int *iovlen)
699 struct addrinfo hints, *ai_nfs, *ai;
701 int ecode, speclen, remoteerr;
702 char *hostp, *delimp, *errstr;
704 static char nam[MNAMELEN + 1], pname[MAXHOSTNAMELEN + 5];
706 if ((delimp = strrchr(spec, ':')) != NULL) {
709 } else if ((delimp = strrchr(spec, '@')) != NULL) {
710 warnx("path@server syntax is deprecated, use server:path");
713 warnx("no <host>:<dirpath> nfs-name");
719 * If there has been a trailing slash at mounttime it seems
720 * that some mountd implementations fail to remove the mount
721 * entries from their mountlist while unmounting.
723 for (speclen = strlen(spec);
724 speclen > 1 && spec[speclen - 1] == '/';
726 spec[speclen - 1] = '\0';
727 if (strlen(hostp) + strlen(spec) + 1 > MNAMELEN) {
728 warnx("%s:%s: %s", hostp, spec, strerror(ENAMETOOLONG));
731 /* Make both '@' and ':' notations equal */
732 if (*hostp != '\0') {
734 memmove(nam, hostp, len);
736 memmove(nam + len + 1, spec, speclen);
737 nam[len + speclen + 1] = '\0';
741 * Handle an internet host address.
743 memset(&hints, 0, sizeof hints);
744 hints.ai_flags = AI_NUMERICHOST;
745 if (nfsproto == IPPROTO_TCP)
746 hints.ai_socktype = SOCK_STREAM;
747 else if (nfsproto == IPPROTO_UDP)
748 hints.ai_socktype = SOCK_DGRAM;
750 if (getaddrinfo(hostp, portspec, &hints, &ai_nfs) != 0) {
751 hints.ai_flags = AI_CANONNAME;
752 if ((ecode = getaddrinfo(hostp, portspec, &hints, &ai_nfs))
754 if (portspec == NULL)
755 errx(1, "%s: %s", hostp, gai_strerror(ecode));
757 errx(1, "%s:%s: %s", hostp, portspec,
758 gai_strerror(ecode));
763 * For a Kerberized nfs mount where the "principal"
764 * argument has not been set, add it here.
766 if (got_principal == 0 && secflavor >= 0 &&
767 secflavor != AUTH_SYS && ai_nfs->ai_canonname != NULL) {
768 snprintf(pname, sizeof (pname), "nfs@%s",
769 ai_nfs->ai_canonname);
770 build_iovec(iov, iovlen, "principal", pname,
775 ret = TRYRET_LOCALERR;
778 * Try each entry returned by getaddrinfo(). Note the
779 * occurence of remote errors by setting `remoteerr'.
782 for (ai = ai_nfs; ai != NULL; ai = ai->ai_next) {
783 if ((ai->ai_family == AF_INET6) &&
784 (opflags & OF_NOINET6))
786 if ((ai->ai_family == AF_INET) &&
787 (opflags & OF_NOINET4))
789 ret = nfs_tryproto(ai, hostp, spec, &errstr, iov,
791 if (ret == TRYRET_SUCCESS)
793 if (ret != TRYRET_LOCALERR)
795 if ((opflags & ISBGRND) == 0)
796 fprintf(stderr, "%s\n", errstr);
798 if (ret == TRYRET_SUCCESS)
801 /* Exit if all errors were local. */
806 * If retrycnt == 0, we are to keep retrying forever.
807 * Otherwise decrement it, and exit if it hits zero.
809 if (retrycnt != 0 && --retrycnt == 0)
812 if ((opflags & (BGRND | ISBGRND)) == BGRND) {
813 warnx("Cannot immediately mount %s:%s, backgrounding",
816 if (daemon(0, 0) != 0)
821 freeaddrinfo(ai_nfs);
823 build_iovec(iov, iovlen, "hostname", nam, (size_t)-1);
824 /* Add mounted file system to PATH_MOUNTTAB */
825 if (!add_mtab(hostp, spec))
826 warnx("can't update %s for %s:%s", PATH_MOUNTTAB, hostp, spec);
831 * Try to set up the NFS arguments according to the address
832 * family, protocol (and possibly port) specified in `ai'.
834 * Returns TRYRET_SUCCESS if successful, or:
835 * TRYRET_TIMEOUT The server did not respond.
836 * TRYRET_REMOTEERR The server reported an error.
837 * TRYRET_LOCALERR Local failure.
839 * In all error cases, *errstr will be set to a statically-allocated string
840 * describing the error.
843 nfs_tryproto(struct addrinfo *ai, char *hostp, char *spec, char **errstr,
844 struct iovec **iov, int *iovlen)
846 static char errbuf[256];
847 struct sockaddr_storage nfs_ss;
848 struct netbuf nfs_nb;
849 struct nfhret nfhret;
851 struct rpc_err rpcerr;
853 struct netconfig *nconf, *nconf_mnt;
854 const char *netid, *netid_mnt;
856 int doconnect, nfsvers, mntvers, sotype;
858 enum mountmode trymntmode;
860 trymntmode = mountmode;
864 if (nfsproto == IPPROTO_TCP)
865 sotype = SOCK_STREAM;
866 else if (nfsproto == IPPROTO_UDP)
869 if ((netid = netidbytype(ai->ai_family, sotype)) == NULL) {
870 snprintf(errbuf, sizeof errbuf,
871 "af %d sotype %d not supported", ai->ai_family, sotype);
872 return (TRYRET_LOCALERR);
874 if ((nconf = getnetconf_cached(netid)) == NULL) {
875 snprintf(errbuf, sizeof errbuf, "%s: %s", netid, nc_sperror());
876 return (TRYRET_LOCALERR);
878 /* The RPCPROG_MNT netid may be different. */
883 if ((netid_mnt = netidbytype(ai->ai_family, SOCK_DGRAM))
885 snprintf(errbuf, sizeof errbuf,
886 "af %d sotype SOCK_DGRAM not supported",
888 return (TRYRET_LOCALERR);
890 if ((nconf_mnt = getnetconf_cached(netid_mnt)) == NULL) {
891 snprintf(errbuf, sizeof errbuf, "%s: %s", netid_mnt,
893 return (TRYRET_LOCALERR);
898 if (trymntmode == V4) {
900 } else if (trymntmode == V2) {
908 if (portspec != NULL) {
909 /* `ai' contains the complete nfsd sockaddr. */
910 nfs_nb.buf = ai->ai_addr;
911 nfs_nb.len = nfs_nb.maxlen = ai->ai_addrlen;
913 /* Ask the remote rpcbind. */
914 nfs_nb.buf = &nfs_ss;
915 nfs_nb.len = nfs_nb.maxlen = sizeof nfs_ss;
917 if (!rpcb_getaddr(NFS_PROGRAM, nfsvers, nconf, &nfs_nb,
919 if (rpc_createerr.cf_stat == RPC_PROGVERSMISMATCH &&
924 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s",
926 clnt_spcreateerror("RPCPROG_NFS"));
927 return (returncode(rpc_createerr.cf_stat,
928 &rpc_createerr.cf_error));
932 /* Check that the server (nfsd) responds on the port we have chosen. */
933 clp = clnt_tli_create(RPC_ANYFD, nconf, &nfs_nb, NFS_PROGRAM, nfsvers,
936 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
937 hostp, spec, clnt_spcreateerror("nfsd: RPCPROG_NFS"));
938 return (returncode(rpc_createerr.cf_stat,
939 &rpc_createerr.cf_error));
941 if (sotype == SOCK_DGRAM && noconn == 0) {
943 * Use connect(), to match what the kernel does. This
944 * catches cases where the server responds from the
945 * wrong source address.
948 if (!clnt_control(clp, CLSET_CONNECT, (char *)&doconnect)) {
950 snprintf(errbuf, sizeof errbuf,
951 "[%s] %s:%s: CLSET_CONNECT failed", netid, hostp,
953 return (TRYRET_LOCALERR);
959 stat = clnt_call(clp, NFSPROC_NULL, (xdrproc_t)xdr_void, NULL,
960 (xdrproc_t)xdr_void, NULL, try);
961 if (stat != RPC_SUCCESS) {
962 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
967 clnt_geterr(clp, &rpcerr);
968 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
969 hostp, spec, clnt_sperror(clp, "NFSPROC_NULL"));
971 return (returncode(stat, &rpcerr));
976 * For NFSv4, there is no mount protocol.
978 if (trymntmode == V4) {
980 * Store the server address in nfsargsp, making
981 * sure to copy any locally allocated structures.
983 addrlen = nfs_nb.len;
984 addr = malloc(addrlen);
987 bcopy(nfs_nb.buf, addr, addrlen);
989 build_iovec(iov, iovlen, "addr", addr, addrlen);
990 secname = sec_num_to_name(secflavor);
992 build_iovec(iov, iovlen, "sec", secname, (size_t)-1);
993 build_iovec(iov, iovlen, "nfsv4", NULL, 0);
994 build_iovec(iov, iovlen, "dirpath", spec, (size_t)-1);
996 return (TRYRET_SUCCESS);
999 /* Send the MOUNTPROC_MNT RPC to get the root filehandle. */
1002 clp = clnt_tp_create(hostp, MOUNTPROG, mntvers, nconf_mnt);
1004 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1005 hostp, spec, clnt_spcreateerror("RPCMNT: clnt_create"));
1006 return (returncode(rpc_createerr.cf_stat,
1007 &rpc_createerr.cf_error));
1009 clp->cl_auth = authsys_create_default();
1010 nfhret.auth = secflavor;
1011 nfhret.vers = mntvers;
1012 stat = clnt_call(clp, MOUNTPROC_MNT, (xdrproc_t)xdr_dir, spec,
1013 (xdrproc_t)xdr_fh, &nfhret,
1015 auth_destroy(clp->cl_auth);
1016 if (stat != RPC_SUCCESS) {
1017 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
1022 clnt_geterr(clp, &rpcerr);
1023 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1024 hostp, spec, clnt_sperror(clp, "RPCPROG_MNT"));
1026 return (returncode(stat, &rpcerr));
1030 if (nfhret.stat != 0) {
1031 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1032 hostp, spec, strerror(nfhret.stat));
1033 return (TRYRET_REMOTEERR);
1037 * Store the filehandle and server address in nfsargsp, making
1038 * sure to copy any locally allocated structures.
1040 addrlen = nfs_nb.len;
1041 addr = malloc(addrlen);
1042 fhsize = nfhret.fhsize;
1043 fh = malloc(fhsize);
1044 if (addr == NULL || fh == NULL)
1046 bcopy(nfs_nb.buf, addr, addrlen);
1047 bcopy(nfhret.nfh, fh, fhsize);
1049 build_iovec(iov, iovlen, "addr", addr, addrlen);
1050 build_iovec(iov, iovlen, "fh", fh, fhsize);
1051 secname = sec_num_to_name(nfhret.auth);
1053 build_iovec(iov, iovlen, "sec", secname, (size_t)-1);
1055 build_iovec(iov, iovlen, "nfsv3", NULL, 0);
1057 return (TRYRET_SUCCESS);
1061 * Catagorise a RPC return status and error into an `enum tryret'
1065 returncode(enum clnt_stat stat, struct rpc_err *rpcerr)
1069 return (TRYRET_TIMEOUT);
1070 case RPC_PMAPFAILURE:
1071 case RPC_PROGNOTREGISTERED:
1072 case RPC_PROGVERSMISMATCH:
1073 /* XXX, these can be local or remote. */
1076 return (TRYRET_REMOTEERR);
1077 case RPC_SYSTEMERROR:
1078 switch (rpcerr->re_errno) {
1080 return (TRYRET_TIMEOUT);
1084 return (TRYRET_REMOTEERR);
1090 return (TRYRET_LOCALERR);
1094 * Look up a netid based on an address family and socket type.
1095 * `af' is the address family, and `sotype' is SOCK_DGRAM or SOCK_STREAM.
1097 * XXX there should be a library function for this.
1100 netidbytype(int af, int sotype)
1102 struct nc_protos *p;
1104 for (p = nc_protos; p->netid != NULL; p++) {
1105 if (af != p->af || sotype != p->sotype)
1113 * Look up a netconfig entry based on a netid, and cache the result so
1114 * that we don't need to remember to call freenetconfigent().
1116 * Otherwise it behaves just like getnetconfigent(), so nc_*error()
1120 getnetconf_cached(const char *netid)
1122 static struct nc_entry {
1123 struct netconfig *nconf;
1124 struct nc_entry *next;
1127 struct netconfig *nconf;
1129 for (p = head; p != NULL; p = p->next)
1130 if (strcmp(netid, p->nconf->nc_netid) == 0)
1133 if ((nconf = getnetconfigent(netid)) == NULL)
1135 if ((p = malloc(sizeof(*p))) == NULL)
1145 * xdr routines for mount rpc's
1148 xdr_dir(XDR *xdrsp, char *dirp)
1150 return (xdr_string(xdrsp, &dirp, MNTPATHLEN));
1154 xdr_fh(XDR *xdrsp, struct nfhret *np)
1157 long auth, authcnt, authfnd = 0;
1159 if (!xdr_u_long(xdrsp, &np->stat))
1165 np->fhsize = NFS_FHSIZE;
1166 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFS_FHSIZE));
1168 if (!xdr_long(xdrsp, &np->fhsize))
1170 if (np->fhsize <= 0 || np->fhsize > NFS3_FHSIZE)
1172 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize))
1174 if (!xdr_long(xdrsp, &authcnt))
1176 for (i = 0; i < authcnt; i++) {
1177 if (!xdr_long(xdrsp, &auth))
1179 if (np->auth == -1) {
1182 } else if (auth == np->auth) {
1187 * Some servers, such as DEC's OSF/1 return a nil authenticator
1188 * list to indicate RPCAUTH_UNIX.
1190 if (authcnt == 0 && np->auth == -1)
1191 np->auth = AUTH_SYS;
1192 if (!authfnd && (authcnt > 0 || np->auth != AUTH_SYS))
1202 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
1203 "usage: mount_nfs [-23bcdiLlNPsTU] [-a maxreadahead] [-D deadthresh]",
1204 " [-g maxgroups] [-I readdirsize] [-o options] [-R retrycnt]",
1205 " [-r readsize] [-t timeout] [-w writesize] [-x retrans]",
1206 " rhost:path node");