2 * nfsmount.c -- Linux NFS mount
3 * Copyright (C) 1993 Rick Sladkey <jrs@world.std.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2, or (at your option)
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * Wed Feb 8 12:51:48 1995, biro@yggdrasil.com (Ross Biro): allow all port
16 * numbers to be specified on the command line.
18 * Fri, 8 Mar 1996 18:01:39, Swen Thuemmler <swen@uni-paderborn.de>:
19 * Omit the call to connect() for Linux version 1.3.11 or later.
21 * Wed Oct 1 23:55:28 1997: Dick Streefland <dick_streefland@tasking.com>
22 * Implemented the "bg", "fg" and "retry" mount options for NFS.
24 * 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@pld.ORG.PL>
25 * - added Native Language Support
27 * Modified by Olaf Kirch and Trond Myklebust for new NFS code,
30 * 2006-06-06 Amit Gud <agud@redhat.com>
31 * - Moved with modifcations to nfs-utils/utils/mount from util-linux/mount.
35 * nfsmount.c,v 1.1.1.1 1993/11/18 08:40:51 jrs Exp
47 #include <rpc/pmap_prot.h>
48 #include <rpc/pmap_clnt.h>
49 #include <sys/socket.h>
52 #include <netinet/in.h>
53 #include <arpa/inet.h>
55 #include <sys/mount.h>
61 #include "nfs_mount.h"
62 #include "mount_constants.h"
74 #ifndef HAVE_INET_ATON
75 #define inet_aton(a,b) (0)
78 typedef dirpath mnt2arg_t;
79 typedef dirpath mnt3arg_t;
80 typedef dirpath mntarg_t;
82 typedef struct fhstatus mnt2res_t;
83 typedef struct mountres3 mnt3res_t;
89 extern int nfs_mount_data_version;
90 extern char *progname;
94 extern int linux_version_code(void);
96 static inline enum clnt_stat
97 nfs3_mount(CLIENT *clnt, mnt3arg_t *mnt3arg, mnt3res_t *mnt3res)
99 return clnt_call(clnt, MOUNTPROC3_MNT,
100 (xdrproc_t) xdr_dirpath, (caddr_t) mnt3arg,
101 (xdrproc_t) xdr_mountres3, (caddr_t) mnt3res,
105 static inline enum clnt_stat
106 nfs2_mount(CLIENT *clnt, mnt2arg_t *mnt2arg, mnt2res_t *mnt2res)
108 return clnt_call(clnt, MOUNTPROC_MNT,
109 (xdrproc_t) xdr_dirpath, (caddr_t) mnt2arg,
110 (xdrproc_t) xdr_fhstatus, (caddr_t) mnt2res,
115 nfs_call_mount(clnt_addr_t *mnt_server, clnt_addr_t *nfs_server,
116 mntarg_t *mntarg, mntres_t *mntres)
122 if (!probe_bothports(mnt_server, nfs_server))
125 clnt = mnt_openclnt(mnt_server, &msock);
128 /* make pointers in xdr_mountres3 NULL so
129 * that xdr_array allocates memory for us
131 memset(mntres, 0, sizeof(*mntres));
132 switch (mnt_server->pmap.pm_vers) {
134 stat = nfs3_mount(clnt, mntarg, &mntres->nfsv3);
138 stat = nfs2_mount(clnt, mntarg, &mntres->nfsv2);
143 if (stat != RPC_SUCCESS) {
144 clnt_geterr(clnt, &rpc_createerr.cf_error);
145 rpc_createerr.cf_stat = stat;
147 mnt_closeclnt(clnt, msock);
148 if (stat == RPC_SUCCESS)
155 parse_options(char *old_opts, struct nfs_mount_data *data,
156 int *bg, int *retry, clnt_addr_t *mnt_server,
157 clnt_addr_t *nfs_server, char *new_opts, const int opt_size)
159 struct sockaddr_in *mnt_saddr = &mnt_server->saddr;
160 struct pmap *mnt_pmap = &mnt_server->pmap;
161 struct pmap *nfs_pmap = &nfs_server->pmap;
163 char *opt, *opteq, *p, *opt_b;
164 char *mounthost = NULL;
171 len = strlen(new_opts);
172 for (p=old_opts, opt_b=NULL; p && *p; p++) {
174 opt_b = p; /* begin of the option item */
176 open_quote ^= 1; /* reverse the status */
178 continue; /* still in a quoted block */
180 *p = '\0'; /* terminate the option item */
181 if (*p == '\0' || *(p+1) == '\0') {
182 opt = opt_b; /* opt is useful now */
186 continue; /* still somewhere in the option item */
188 if (strlen(opt) >= sizeof(cbuf))
190 if ((opteq = strchr(opt, '=')) && isdigit(opteq[1])) {
191 int val = atoi(opteq + 1);
193 /* printf("opt=%s\n", opt); */
194 if (!strcmp(opt, "rsize"))
196 else if (!strcmp(opt, "wsize"))
198 else if (!strcmp(opt, "timeo"))
200 else if (!strcmp(opt, "retrans"))
202 else if (!strcmp(opt, "acregmin"))
203 data->acregmin = val;
204 else if (!strcmp(opt, "acregmax"))
205 data->acregmax = val;
206 else if (!strcmp(opt, "acdirmin"))
207 data->acdirmin = val;
208 else if (!strcmp(opt, "acdirmax"))
209 data->acdirmax = val;
210 else if (!strcmp(opt, "actimeo")) {
211 data->acregmin = val;
212 data->acregmax = val;
213 data->acdirmin = val;
214 data->acdirmax = val;
216 else if (!strcmp(opt, "retry"))
218 else if (!strcmp(opt, "port"))
219 nfs_pmap->pm_port = val;
220 else if (!strcmp(opt, "mountport"))
221 mnt_pmap->pm_port = val;
222 else if (!strcmp(opt, "mountprog"))
223 mnt_pmap->pm_prog = val;
224 else if (!strcmp(opt, "mountvers"))
225 mnt_pmap->pm_vers = val;
226 else if (!strcmp(opt, "mounthost"))
227 mounthost=xstrndup(opteq+1, strcspn(opteq+1," \t\n\r,"));
228 else if (!strcmp(opt, "nfsprog"))
229 nfs_pmap->pm_prog = val;
230 else if (!strcmp(opt, "nfsvers") ||
231 !strcmp(opt, "vers")) {
232 nfs_pmap->pm_vers = val;
234 #if NFS_MOUNT_VERSION >= 2
235 } else if (!strcmp(opt, "namlen")) {
236 if (nfs_mount_data_version >= 2)
243 } else if (!strcmp(opt, "addr")) {
250 sprintf(cbuf, "%s=%s,", opt, opteq+1);
253 if (!strcmp(opt, "proto")) {
254 if (!strcmp(opteq+1, "udp")) {
255 nfs_pmap->pm_prot = IPPROTO_UDP;
256 mnt_pmap->pm_prot = IPPROTO_UDP;
257 #if NFS_MOUNT_VERSION >= 2
258 data->flags &= ~NFS_MOUNT_TCP;
259 } else if (!strcmp(opteq+1, "tcp") &&
260 nfs_mount_data_version > 2) {
261 nfs_pmap->pm_prot = IPPROTO_TCP;
262 mnt_pmap->pm_prot = IPPROTO_TCP;
263 data->flags |= NFS_MOUNT_TCP;
269 #if NFS_MOUNT_VERSION >= 5
270 } else if (!strcmp(opt, "sec")) {
271 char *secflavor = opteq+1;
273 if (nfs_mount_data_version < 5) {
274 printf(_("Warning: ignoring sec=%s option\n"),
277 } else if (!strcmp(secflavor, "none"))
278 data->pseudoflavor = AUTH_NONE;
279 else if (!strcmp(secflavor, "sys"))
280 data->pseudoflavor = AUTH_SYS;
281 else if (!strcmp(secflavor, "krb5"))
282 data->pseudoflavor = AUTH_GSS_KRB5;
283 else if (!strcmp(secflavor, "krb5i"))
284 data->pseudoflavor = AUTH_GSS_KRB5I;
285 else if (!strcmp(secflavor, "krb5p"))
286 data->pseudoflavor = AUTH_GSS_KRB5P;
287 else if (!strcmp(secflavor, "lipkey"))
288 data->pseudoflavor = AUTH_GSS_LKEY;
289 else if (!strcmp(secflavor, "lipkey-i"))
290 data->pseudoflavor = AUTH_GSS_LKEYI;
291 else if (!strcmp(secflavor, "lipkey-p"))
292 data->pseudoflavor = AUTH_GSS_LKEYP;
293 else if (!strcmp(secflavor, "spkm3"))
294 data->pseudoflavor = AUTH_GSS_SPKM;
295 else if (!strcmp(secflavor, "spkm3i"))
296 data->pseudoflavor = AUTH_GSS_SPKMI;
297 else if (!strcmp(secflavor, "spkm3p"))
298 data->pseudoflavor = AUTH_GSS_SPKMP;
302 printf(_("Warning: Unrecognized security flavor %s.\n"),
306 data->flags |= NFS_MOUNT_SECFLAVOUR;
308 } else if (!strcmp(opt, "mounthost"))
309 mounthost=xstrndup(opteq+1,
310 strcspn(opteq+1," \t\n\r,"));
311 else if (!strcmp(opt, "context")) {
312 char *context = opteq + 1;
313 int ctxlen = strlen(context);
315 if (ctxlen > NFS_MAX_CONTEXT_LEN) {
316 nfs_error(_("context parameter exceeds"
318 NFS_MAX_CONTEXT_LEN);
321 /* The context string is in the format of
322 * "system_u:object_r:...". We only want
323 * the context str between the quotes.
326 strncpy(data->context, context+1,
329 strncpy(data->context, context,
330 NFS_MAX_CONTEXT_LEN);
335 sprintf(cbuf, "%s=%s,", opt, opteq+1);
338 if (!strncmp(opt, "no", 2)) {
342 if (!strcmp(opt, "bg"))
344 else if (!strcmp(opt, "fg"))
346 else if (!strcmp(opt, "soft")) {
347 data->flags &= ~NFS_MOUNT_SOFT;
349 data->flags |= NFS_MOUNT_SOFT;
350 } else if (!strcmp(opt, "hard")) {
351 data->flags &= ~NFS_MOUNT_SOFT;
353 data->flags |= NFS_MOUNT_SOFT;
354 } else if (!strcmp(opt, "intr")) {
355 data->flags &= ~NFS_MOUNT_INTR;
357 data->flags |= NFS_MOUNT_INTR;
358 } else if (!strcmp(opt, "posix")) {
359 data->flags &= ~NFS_MOUNT_POSIX;
361 data->flags |= NFS_MOUNT_POSIX;
362 } else if (!strcmp(opt, "cto")) {
363 data->flags &= ~NFS_MOUNT_NOCTO;
365 data->flags |= NFS_MOUNT_NOCTO;
366 } else if (!strcmp(opt, "ac")) {
367 data->flags &= ~NFS_MOUNT_NOAC;
369 data->flags |= NFS_MOUNT_NOAC;
370 #if NFS_MOUNT_VERSION >= 2
371 } else if (!strcmp(opt, "tcp")) {
372 data->flags &= ~NFS_MOUNT_TCP;
374 if (nfs_mount_data_version < 2)
376 nfs_pmap->pm_prot = IPPROTO_TCP;
377 mnt_pmap->pm_prot = IPPROTO_TCP;
378 data->flags |= NFS_MOUNT_TCP;
380 mnt_pmap->pm_prot = IPPROTO_UDP;
381 nfs_pmap->pm_prot = IPPROTO_UDP;
383 } else if (!strcmp(opt, "udp")) {
384 data->flags &= ~NFS_MOUNT_TCP;
386 if (nfs_mount_data_version < 2)
388 nfs_pmap->pm_prot = IPPROTO_TCP;
389 mnt_pmap->pm_prot = IPPROTO_TCP;
390 data->flags |= NFS_MOUNT_TCP;
392 nfs_pmap->pm_prot = IPPROTO_UDP;
393 mnt_pmap->pm_prot = IPPROTO_UDP;
396 #if NFS_MOUNT_VERSION >= 3
397 } else if (!strcmp(opt, "lock")) {
398 data->flags &= ~NFS_MOUNT_NONLM;
400 if (nfs_mount_data_version < 3)
402 data->flags |= NFS_MOUNT_NONLM;
405 #if NFS_MOUNT_VERSION >= 4
406 } else if (!strcmp(opt, "broken_suid")) {
407 data->flags &= ~NFS_MOUNT_BROKEN_SUID;
409 if (nfs_mount_data_version < 4)
411 data->flags |= NFS_MOUNT_BROKEN_SUID;
413 } else if (!strcmp(opt, "acl")) {
414 data->flags &= ~NFS_MOUNT_NOACL;
416 data->flags |= NFS_MOUNT_NOACL;
417 } else if (!strcmp(opt, "rdirplus")) {
418 data->flags &= ~NFS_MOUNT_NORDIRPLUS;
420 data->flags |= NFS_MOUNT_NORDIRPLUS;
421 } else if (!strcmp(opt, "sharecache")) {
422 data->flags &= ~NFS_MOUNT_UNSHARED;
424 data->flags |= NFS_MOUNT_UNSHARED;
430 nfs_error(_("%s: Unsupported nfs mount option:"
432 val ? "" : "no", opt);
435 sprintf(cbuf, val ? "%s,":"no%s,", opt);
438 if (len >= opt_size) {
439 nfs_error(_("%s: excessively long option argument"),
443 strcat(new_opts, cbuf);
445 /* See if the nfs host = mount host. */
447 if (!nfs_gethostbyname(mounthost, mnt_saddr))
449 *mnt_server->hostname = mounthost;
453 nfs_error(_("%s: Bad nfs mount parameter: %s\n"), progname, opt);
458 static int nfsmnt_check_compat(const struct pmap *nfs_pmap,
459 const struct pmap *mnt_pmap)
461 unsigned int max_nfs_vers = (nfs_mount_data_version >= 4) ? 3 : 2;
462 unsigned int max_mnt_vers = (nfs_mount_data_version >= 4) ? 3 : 2;
464 if (nfs_pmap->pm_vers == 4) {
465 nfs_error(_("%s: Please use '-t nfs4' "
466 "instead of '-o vers=4'"), progname);
470 if (nfs_pmap->pm_vers) {
471 if (nfs_pmap->pm_vers > max_nfs_vers || nfs_pmap->pm_vers < 2) {
472 nfs_error(_("%s: NFS version %ld is not supported"),
473 progname, nfs_pmap->pm_vers);
478 if (mnt_pmap->pm_vers > max_mnt_vers) {
479 nfs_error(_("%s: NFS mount version %ld s not supported"),
480 progname, mnt_pmap->pm_vers);
491 nfsmount(const char *spec, const char *node, int flags,
492 char **extra_opts, int fake)
494 static char *prev_bg_host;
496 char *hostname, *dirname, *old_opts, *mounthost = NULL;
497 char new_opts[1024], cbuf[1024];
498 static struct nfs_mount_data data;
499 int val, running_bg = 0;
500 static int doonce = 0;
502 clnt_addr_t mnt_server = { &mounthost, };
503 clnt_addr_t nfs_server = { &hostname, };
504 struct sockaddr_in *nfs_saddr = &nfs_server.saddr;
505 struct pmap *mnt_pmap = &mnt_server.pmap,
506 *nfs_pmap = &nfs_server.pmap;
507 struct pmap save_mnt, save_nfs;
516 int retval = EX_FAIL;
521 if (strlen(spec) >= sizeof(hostdir)) {
522 nfs_error(_("%s: excessively long host:dir argument"),
526 strcpy(hostdir, spec);
527 if ((s = strchr(hostdir, ':'))) {
531 /* Ignore all but first hostname in replicated mounts
532 until they can be fully supported. (mack@sgi.com) */
533 if ((s = strchr(hostdir, ','))) {
535 nfs_error(_("%s: warning: "
536 "multiple hostnames not supported"),
540 nfs_error(_("%s: directory to mount not in host:dir format"),
545 if (!nfs_gethostbyname(hostname, nfs_saddr))
547 mounthost = hostname;
548 memcpy (&mnt_server.saddr, nfs_saddr, sizeof (mnt_server.saddr));
550 /* add IP address to mtab options for use when unmounting */
552 s = inet_ntoa(nfs_saddr->sin_addr);
553 old_opts = *extra_opts;
557 /* Set default options.
558 * rsize/wsize (and bsize, for ver >= 3) are left 0 in order to
559 * let the kernel decide.
560 * timeo is filled in after we know whether it'll be TCP or UDP. */
561 memset(&data, 0, sizeof(data));
566 #if NFS_MOUNT_VERSION >= 2
567 data.namlen = NAME_MAX;
571 retry = 10000; /* 10000 minutes ~ 1 week */
573 memset(mnt_pmap, 0, sizeof(*mnt_pmap));
574 mnt_pmap->pm_prog = MOUNTPROG;
575 memset(nfs_pmap, 0, sizeof(*nfs_pmap));
576 nfs_pmap->pm_prog = NFS_PROGRAM;
580 if (!parse_options(old_opts, &data, &bg, &retry, &mnt_server, &nfs_server,
581 new_opts, sizeof(new_opts)))
583 if (!nfsmnt_check_compat(nfs_pmap, mnt_pmap))
586 if (retry == 10000 && !bg)
587 retry = 2; /* reset for fg mounts */
590 #ifdef NFS_MOUNT_DEBUG
591 printf("rsize = %d, wsize = %d, timeo = %d, retrans = %d\n",
592 data.rsize, data.wsize, data.timeo, data.retrans);
593 printf("acreg (min, max) = (%d, %d), acdir (min, max) = (%d, %d)\n",
594 data.acregmin, data.acregmax, data.acdirmin, data.acdirmax);
595 printf("port = %d, bg = %d, retry = %d, flags = %.8x\n",
596 nfs_pmap->pm_port, bg, retry, data.flags);
597 printf("mountprog = %d, mountvers = %d, nfsprog = %d, nfsvers = %d\n",
598 mnt_pmap->pm_prog, mnt_pmap->pm_vers,
599 nfs_pmap->pm_prog, nfs_pmap->pm_vers);
600 printf("soft = %d, intr = %d, posix = %d, nocto = %d, noac = %d ",
601 (data.flags & NFS_MOUNT_SOFT) != 0,
602 (data.flags & NFS_MOUNT_INTR) != 0,
603 (data.flags & NFS_MOUNT_POSIX) != 0,
604 (data.flags & NFS_MOUNT_NOCTO) != 0,
605 (data.flags & NFS_MOUNT_NOAC) != 0);
606 #if NFS_MOUNT_VERSION >= 2
608 (data.flags & NFS_MOUNT_TCP) != 0);
610 #if NFS_MOUNT_VERSION >= 4
611 printf("noacl = %d ", (data.flags & NFS_MOUNT_NOACL) != 0);
613 #if NFS_MOUNT_VERSION >= 5
614 printf("sec = %u ", data.pseudoflavor);
615 printf("readdirplus = %d ", (data.flags & NFS_MOUNT_NORDIRPLUS) != 0);
620 data.version = nfs_mount_data_version;
622 if (flags & MS_REMOUNT)
626 * If the previous mount operation on the same host was
627 * backgrounded, and the "bg" for this mount is also set,
628 * give up immediately, to avoid the initial timeout.
630 if (bg && !running_bg &&
631 prev_bg_host && strcmp(hostname, prev_bg_host) == 0) {
637 /* create mount deamon client */
640 * The following loop implements the mount retries. On the first
641 * call, "running_bg" is 0. When the mount times out, and the
642 * "bg" option is set, the exit status EX_BG will be returned.
643 * For a backgrounded mount, there will be a second call by the
644 * child process with "running_bg" set to 1.
646 * The case where the mount point is not present and the "bg"
647 * option is set, is treated as a timeout. This is done to
648 * support nested mounts.
650 * The "retry" count specified by the user is the number of
651 * minutes to retry before giving up.
653 * Only the first error message will be displayed.
655 timeout = time(NULL) + 60 * retry;
660 memcpy(&save_nfs, nfs_pmap, sizeof(save_nfs));
661 memcpy(&save_mnt, mnt_pmap, sizeof(save_mnt));
663 if (bg && stat(node, &statbuf) == -1) {
664 /* no mount point yet - sleep */
666 sleep(val); /* 1, 2, 4, 8, 16, 30, ... */
673 /* be careful not to use too many CPU cycles */
677 stat = nfs_call_mount(&mnt_server, &nfs_server,
681 memcpy(nfs_pmap, &save_nfs, sizeof(*nfs_pmap));
682 memcpy(mnt_pmap, &save_mnt, sizeof(*mnt_pmap));
686 switch(rpc_createerr.cf_stat){
689 case RPC_SYSTEMERROR:
690 if (errno == ETIMEDOUT)
693 mount_errors(*nfs_server.hostname, 0, bg);
698 mount_errors(*nfs_server.hostname, 0, bg);
701 mount_errors(*nfs_server.hostname, 1, bg);
705 prev_bg_host = xstrdup(hostname);
712 mount_errors(*nfs_server.hostname, 0, bg);
716 mount_errors(*nfs_server.hostname, 1, bg);
719 if (nfs_pmap->pm_vers == 2) {
720 if (mntres.nfsv2.fhs_status != 0) {
721 nfs_error(_("%s: %s:%s failed, reason given by server: %s"),
722 progname, hostname, dirname,
723 nfs_strerror(mntres.nfsv2.fhs_status));
726 memcpy(data.root.data,
727 (char *) mntres.nfsv2.fhstatus_u.fhs_fhandle,
729 #if NFS_MOUNT_VERSION >= 4
730 data.root.size = NFS_FHSIZE;
731 memcpy(data.old_root.data,
732 (char *) mntres.nfsv2.fhstatus_u.fhs_fhandle,
736 #if NFS_MOUNT_VERSION >= 4
737 mountres3_ok *mountres;
739 int i, *flavor, yum = 0;
740 if (mntres.nfsv3.fhs_status != 0) {
741 nfs_error(_("%s: %s:%s failed, reason given by server: %s"),
742 progname, hostname, dirname,
743 nfs_strerror(mntres.nfsv3.fhs_status));
746 #if NFS_MOUNT_VERSION >= 5
747 mountres = &mntres.nfsv3.mountres3_u.mountinfo;
748 i = mountres->auth_flavors.auth_flavors_len;
752 flavor = mountres->auth_flavors.auth_flavors_val;
754 /* If no flavour requested, use first simple
755 * flavour that is offered.
757 if (! (data.flags & NFS_MOUNT_SECFLAVOUR) &&
758 (flavor[i] == AUTH_SYS ||
759 flavor[i] == AUTH_NONE)) {
760 data.pseudoflavor = flavor[i];
761 data.flags |= NFS_MOUNT_SECFLAVOUR;
763 if (flavor[i] == data.pseudoflavor)
765 #ifdef NFS_MOUNT_DEBUG
766 printf("auth flavor %d: %d\n",
771 nfs_error(_("%s: %s:%s failed, security flavor "
773 progname, hostname, dirname);
774 /* server has registered us in rmtab, send umount */
775 nfs_call_umount(&mnt_server, &dirname);
780 fhandle = &mntres.nfsv3.mountres3_u.mountinfo.fhandle;
781 memset(data.old_root.data, 0, NFS_FHSIZE);
782 memset(&data.root, 0, sizeof(data.root));
783 data.root.size = fhandle->fhandle3_len;
784 memcpy(data.root.data,
785 (char *) fhandle->fhandle3_val,
786 fhandle->fhandle3_len);
788 data.flags |= NFS_MOUNT_VER3;
792 if (nfs_mount_data_version == 1) {
793 /* create nfs socket for kernel */
794 if (nfs_pmap->pm_prot == IPPROTO_TCP)
795 fsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
797 fsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
799 perror(_("nfs socket"));
802 if (bindresvport(fsock, 0) < 0) {
803 perror(_("nfs bindresvport"));
808 #ifdef NFS_MOUNT_DEBUG
809 printf(_("using port %d for nfs deamon\n"), nfs_pmap->pm_port);
811 nfs_saddr->sin_port = htons(nfs_pmap->pm_port);
813 * connect() the socket for kernels 1.3.10 and below only,
814 * to avoid problems with multihomed hosts.
817 if (linux_version_code() <= 0x01030a && fsock != -1
818 && connect(fsock, (struct sockaddr *) nfs_saddr,
819 sizeof (*nfs_saddr)) < 0) {
820 perror(_("nfs connect"));
824 #if NFS_MOUNT_VERSION >= 2
825 if (nfs_pmap->pm_prot == IPPROTO_TCP)
826 data.flags |= NFS_MOUNT_TCP;
828 data.flags &= ~NFS_MOUNT_TCP;
831 /* prepare data structure for kernel */
834 memcpy((char *) &data.addr, (char *) nfs_saddr, sizeof(data.addr));
835 strncpy(data.hostname, hostname, sizeof(data.hostname));
838 /* Ensure we have enough padding for the following strcat()s */
839 if (strlen(new_opts) + strlen(s) + 30 >= sizeof(new_opts)) {
840 nfs_error(_("%s: excessively long option argument"),
845 snprintf(cbuf, sizeof(cbuf)-1, "addr=%s", s);
846 strcat(new_opts, cbuf);
848 *extra_opts = xstrdup(new_opts);
850 if (!fake && !(data.flags & NFS_MOUNT_NONLM)) {
851 if (!start_statd()) {
852 nfs_error(_("%s: rpc.statd is not running but is "
853 "required for remote locking.\n"
854 " Either use '-o nolocks' to keep "
855 "locks local, or start statd."),
862 if (mount(spec, node, "nfs",
863 flags & ~(MS_USER|MS_USERS), &data)) {
864 mount_error(spec, node, errno);