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>
62 #include "nfs_mount.h"
63 #include "mount_constants.h"
75 #ifndef HAVE_INET_ATON
76 #define inet_aton(a,b) (0)
79 typedef dirpath mnt2arg_t;
80 typedef dirpath mnt3arg_t;
81 typedef dirpath mntarg_t;
83 typedef struct fhstatus mnt2res_t;
84 typedef struct mountres3 mnt3res_t;
90 extern int nfs_mount_data_version;
91 extern char *progname;
95 extern int linux_version_code(void);
97 static inline enum clnt_stat
98 nfs3_mount(CLIENT *clnt, mnt3arg_t *mnt3arg, mnt3res_t *mnt3res)
100 return clnt_call(clnt, MOUNTPROC3_MNT,
101 (xdrproc_t) xdr_dirpath, (caddr_t) mnt3arg,
102 (xdrproc_t) xdr_mountres3, (caddr_t) mnt3res,
106 static inline enum clnt_stat
107 nfs2_mount(CLIENT *clnt, mnt2arg_t *mnt2arg, mnt2res_t *mnt2res)
109 return clnt_call(clnt, MOUNTPROC_MNT,
110 (xdrproc_t) xdr_dirpath, (caddr_t) mnt2arg,
111 (xdrproc_t) xdr_fhstatus, (caddr_t) mnt2res,
116 nfs_call_mount(clnt_addr_t *mnt_server, clnt_addr_t *nfs_server,
117 mntarg_t *mntarg, mntres_t *mntres)
123 if (!probe_bothports(mnt_server, nfs_server))
126 clnt = mnt_openclnt(mnt_server, &msock);
129 /* make pointers in xdr_mountres3 NULL so
130 * that xdr_array allocates memory for us
132 memset(mntres, 0, sizeof(*mntres));
133 switch (mnt_server->pmap.pm_vers) {
135 stat = nfs3_mount(clnt, mntarg, &mntres->nfsv3);
139 stat = nfs2_mount(clnt, mntarg, &mntres->nfsv2);
144 if (stat != RPC_SUCCESS) {
145 clnt_geterr(clnt, &rpc_createerr.cf_error);
146 rpc_createerr.cf_stat = stat;
148 mnt_closeclnt(clnt, msock);
149 if (stat == RPC_SUCCESS)
156 parse_options(char *old_opts, struct nfs_mount_data *data,
157 int *bg, int *retry, clnt_addr_t *mnt_server,
158 clnt_addr_t *nfs_server, char *new_opts, const int opt_size)
160 struct sockaddr_in *mnt_saddr = &mnt_server->saddr;
161 struct pmap *mnt_pmap = &mnt_server->pmap;
162 struct pmap *nfs_pmap = &nfs_server->pmap;
164 char *opt, *opteq, *p, *opt_b;
165 char *mounthost = NULL;
172 len = strlen(new_opts);
173 for (p=old_opts, opt_b=NULL; p && *p; p++) {
175 opt_b = p; /* begin of the option item */
177 open_quote ^= 1; /* reverse the status */
179 continue; /* still in a quoted block */
181 *p = '\0'; /* terminate the option item */
182 if (*p == '\0' || *(p+1) == '\0') {
183 opt = opt_b; /* opt is useful now */
187 continue; /* still somewhere in the option item */
189 if (strlen(opt) >= sizeof(cbuf))
191 if ((opteq = strchr(opt, '=')) && isdigit(opteq[1])) {
192 int val = atoi(opteq + 1);
194 /* printf("opt=%s\n", opt); */
195 if (!strcmp(opt, "rsize"))
197 else if (!strcmp(opt, "wsize"))
199 else if (!strcmp(opt, "timeo"))
201 else if (!strcmp(opt, "retrans"))
203 else if (!strcmp(opt, "acregmin"))
204 data->acregmin = val;
205 else if (!strcmp(opt, "acregmax"))
206 data->acregmax = val;
207 else if (!strcmp(opt, "acdirmin"))
208 data->acdirmin = val;
209 else if (!strcmp(opt, "acdirmax"))
210 data->acdirmax = val;
211 else if (!strcmp(opt, "actimeo")) {
212 data->acregmin = val;
213 data->acregmax = val;
214 data->acdirmin = val;
215 data->acdirmax = val;
217 else if (!strcmp(opt, "retry"))
219 else if (!strcmp(opt, "port"))
220 nfs_pmap->pm_port = val;
221 else if (!strcmp(opt, "mountport"))
222 mnt_pmap->pm_port = val;
223 else if (!strcmp(opt, "mountprog"))
224 mnt_pmap->pm_prog = val;
225 else if (!strcmp(opt, "mountvers"))
226 mnt_pmap->pm_vers = val;
227 else if (!strcmp(opt, "mounthost"))
228 mounthost=xstrndup(opteq+1, strcspn(opteq+1," \t\n\r,"));
229 else if (!strcmp(opt, "nfsprog"))
230 nfs_pmap->pm_prog = val;
231 else if (!strcmp(opt, "nfsvers") ||
232 !strcmp(opt, "vers")) {
233 nfs_pmap->pm_vers = val;
235 #if NFS_MOUNT_VERSION >= 2
236 } else if (!strcmp(opt, "namlen")) {
237 if (nfs_mount_data_version >= 2)
244 } else if (!strcmp(opt, "addr")) {
251 sprintf(cbuf, "%s=%s,", opt, opteq+1);
254 if (!strcmp(opt, "proto")) {
255 if (!strcmp(opteq+1, "udp")) {
256 nfs_pmap->pm_prot = IPPROTO_UDP;
257 mnt_pmap->pm_prot = IPPROTO_UDP;
258 #if NFS_MOUNT_VERSION >= 2
259 data->flags &= ~NFS_MOUNT_TCP;
260 } else if (!strcmp(opteq+1, "tcp") &&
261 nfs_mount_data_version > 2) {
262 nfs_pmap->pm_prot = IPPROTO_TCP;
263 mnt_pmap->pm_prot = IPPROTO_TCP;
264 data->flags |= NFS_MOUNT_TCP;
270 #if NFS_MOUNT_VERSION >= 5
271 } else if (!strcmp(opt, "sec")) {
272 char *secflavor = opteq+1;
274 if (nfs_mount_data_version < 5) {
275 printf(_("Warning: ignoring sec=%s option\n"),
278 } else if (!strcmp(secflavor, "none"))
279 data->pseudoflavor = AUTH_NONE;
280 else if (!strcmp(secflavor, "sys"))
281 data->pseudoflavor = AUTH_SYS;
282 else if (!strcmp(secflavor, "krb5"))
283 data->pseudoflavor = AUTH_GSS_KRB5;
284 else if (!strcmp(secflavor, "krb5i"))
285 data->pseudoflavor = AUTH_GSS_KRB5I;
286 else if (!strcmp(secflavor, "krb5p"))
287 data->pseudoflavor = AUTH_GSS_KRB5P;
288 else if (!strcmp(secflavor, "lipkey"))
289 data->pseudoflavor = AUTH_GSS_LKEY;
290 else if (!strcmp(secflavor, "lipkey-i"))
291 data->pseudoflavor = AUTH_GSS_LKEYI;
292 else if (!strcmp(secflavor, "lipkey-p"))
293 data->pseudoflavor = AUTH_GSS_LKEYP;
294 else if (!strcmp(secflavor, "spkm3"))
295 data->pseudoflavor = AUTH_GSS_SPKM;
296 else if (!strcmp(secflavor, "spkm3i"))
297 data->pseudoflavor = AUTH_GSS_SPKMI;
298 else if (!strcmp(secflavor, "spkm3p"))
299 data->pseudoflavor = AUTH_GSS_SPKMP;
303 printf(_("Warning: Unrecognized security flavor %s.\n"),
307 data->flags |= NFS_MOUNT_SECFLAVOUR;
309 } else if (!strcmp(opt, "mounthost"))
310 mounthost=xstrndup(opteq+1,
311 strcspn(opteq+1," \t\n\r,"));
312 else if (!strcmp(opt, "context")) {
313 char *context = opteq + 1;
314 int ctxlen = strlen(context);
316 if (ctxlen > NFS_MAX_CONTEXT_LEN) {
317 nfs_error(_("context parameter exceeds"
319 NFS_MAX_CONTEXT_LEN);
322 /* The context string is in the format of
323 * "system_u:object_r:...". We only want
324 * the context str between the quotes.
327 strncpy(data->context, context+1,
330 strncpy(data->context, context,
331 NFS_MAX_CONTEXT_LEN);
336 sprintf(cbuf, "%s=%s,", opt, opteq+1);
339 if (!strncmp(opt, "no", 2)) {
343 if (!strcmp(opt, "bg"))
345 else if (!strcmp(opt, "fg"))
347 else if (!strcmp(opt, "soft")) {
348 data->flags &= ~NFS_MOUNT_SOFT;
350 data->flags |= NFS_MOUNT_SOFT;
351 } else if (!strcmp(opt, "hard")) {
352 data->flags &= ~NFS_MOUNT_SOFT;
354 data->flags |= NFS_MOUNT_SOFT;
355 } else if (!strcmp(opt, "intr")) {
356 data->flags &= ~NFS_MOUNT_INTR;
358 data->flags |= NFS_MOUNT_INTR;
359 } else if (!strcmp(opt, "posix")) {
360 data->flags &= ~NFS_MOUNT_POSIX;
362 data->flags |= NFS_MOUNT_POSIX;
363 } else if (!strcmp(opt, "cto")) {
364 data->flags &= ~NFS_MOUNT_NOCTO;
366 data->flags |= NFS_MOUNT_NOCTO;
367 } else if (!strcmp(opt, "ac")) {
368 data->flags &= ~NFS_MOUNT_NOAC;
370 data->flags |= NFS_MOUNT_NOAC;
371 #if NFS_MOUNT_VERSION >= 2
372 } else if (!strcmp(opt, "tcp")) {
373 data->flags &= ~NFS_MOUNT_TCP;
375 if (nfs_mount_data_version < 2)
377 nfs_pmap->pm_prot = IPPROTO_TCP;
378 mnt_pmap->pm_prot = IPPROTO_TCP;
379 data->flags |= NFS_MOUNT_TCP;
381 mnt_pmap->pm_prot = IPPROTO_UDP;
382 nfs_pmap->pm_prot = IPPROTO_UDP;
384 } else if (!strcmp(opt, "udp")) {
385 data->flags &= ~NFS_MOUNT_TCP;
387 if (nfs_mount_data_version < 2)
389 nfs_pmap->pm_prot = IPPROTO_TCP;
390 mnt_pmap->pm_prot = IPPROTO_TCP;
391 data->flags |= NFS_MOUNT_TCP;
393 nfs_pmap->pm_prot = IPPROTO_UDP;
394 mnt_pmap->pm_prot = IPPROTO_UDP;
397 #if NFS_MOUNT_VERSION >= 3
398 } else if (!strcmp(opt, "lock")) {
399 data->flags &= ~NFS_MOUNT_NONLM;
401 if (nfs_mount_data_version < 3)
403 data->flags |= NFS_MOUNT_NONLM;
406 #if NFS_MOUNT_VERSION >= 4
407 } else if (!strcmp(opt, "broken_suid")) {
408 data->flags &= ~NFS_MOUNT_BROKEN_SUID;
410 if (nfs_mount_data_version < 4)
412 data->flags |= NFS_MOUNT_BROKEN_SUID;
414 } else if (!strcmp(opt, "acl")) {
415 data->flags &= ~NFS_MOUNT_NOACL;
417 data->flags |= NFS_MOUNT_NOACL;
418 } else if (!strcmp(opt, "rdirplus")) {
419 data->flags &= ~NFS_MOUNT_NORDIRPLUS;
421 data->flags |= NFS_MOUNT_NORDIRPLUS;
422 } else if (!strcmp(opt, "sharecache")) {
423 data->flags &= ~NFS_MOUNT_UNSHARED;
425 data->flags |= NFS_MOUNT_UNSHARED;
431 nfs_error(_("%s: Unsupported nfs mount option:"
433 val ? "" : "no", opt);
436 sprintf(cbuf, val ? "%s,":"no%s,", opt);
439 if (len >= opt_size) {
440 nfs_error(_("%s: excessively long option argument"),
444 strcat(new_opts, cbuf);
446 /* See if the nfs host = mount host. */
448 if (!nfs_gethostbyname(mounthost, mnt_saddr))
450 *mnt_server->hostname = mounthost;
454 nfs_error(_("%s: Bad nfs mount parameter: %s\n"), progname, opt);
459 static int nfsmnt_check_compat(const struct pmap *nfs_pmap,
460 const struct pmap *mnt_pmap)
462 unsigned int max_nfs_vers = (nfs_mount_data_version >= 4) ? 3 : 2;
463 unsigned int max_mnt_vers = (nfs_mount_data_version >= 4) ? 3 : 2;
465 if (nfs_pmap->pm_vers == 4) {
466 nfs_error(_("%s: Please use '-t nfs4' "
467 "instead of '-o vers=4'"), progname);
471 if (nfs_pmap->pm_vers) {
472 if (nfs_pmap->pm_vers > max_nfs_vers || nfs_pmap->pm_vers < 2) {
473 nfs_error(_("%s: NFS version %ld is not supported"),
474 progname, nfs_pmap->pm_vers);
479 if (mnt_pmap->pm_vers > max_mnt_vers) {
480 nfs_error(_("%s: NFS mount version %ld s not supported"),
481 progname, mnt_pmap->pm_vers);
492 nfsmount(const char *spec, const char *node, int flags,
493 char **extra_opts, int fake)
495 static char *prev_bg_host;
497 char *hostname, *dirname, *old_opts, *mounthost = NULL;
498 char new_opts[1024], cbuf[1024];
499 static struct nfs_mount_data data;
500 int val, running_bg = 0;
501 static int doonce = 0;
503 clnt_addr_t mnt_server = { &mounthost, };
504 clnt_addr_t nfs_server = { &hostname, };
505 struct sockaddr_in *nfs_saddr = &nfs_server.saddr;
506 struct pmap *mnt_pmap = &mnt_server.pmap,
507 *nfs_pmap = &nfs_server.pmap;
508 struct pmap save_mnt, save_nfs;
517 int retval = EX_FAIL;
522 if (strlen(spec) >= sizeof(hostdir)) {
523 nfs_error(_("%s: excessively long host:dir argument"),
527 strcpy(hostdir, spec);
528 if ((s = strchr(hostdir, ':'))) {
532 /* Ignore all but first hostname in replicated mounts
533 until they can be fully supported. (mack@sgi.com) */
534 if ((s = strchr(hostdir, ','))) {
536 nfs_error(_("%s: warning: "
537 "multiple hostnames not supported"),
541 nfs_error(_("%s: directory to mount not in host:dir format"),
546 if (!nfs_gethostbyname(hostname, nfs_saddr))
548 mounthost = hostname;
549 memcpy (&mnt_server.saddr, nfs_saddr, sizeof (mnt_server.saddr));
551 /* add IP address to mtab options for use when unmounting */
553 s = inet_ntoa(nfs_saddr->sin_addr);
554 old_opts = *extra_opts;
558 /* Set default options.
559 * rsize/wsize (and bsize, for ver >= 3) are left 0 in order to
560 * let the kernel decide.
561 * timeo is filled in after we know whether it'll be TCP or UDP. */
562 memset(&data, 0, sizeof(data));
567 #if NFS_MOUNT_VERSION >= 2
568 data.namlen = NAME_MAX;
572 retry = 10000; /* 10000 minutes ~ 1 week */
574 memset(mnt_pmap, 0, sizeof(*mnt_pmap));
575 mnt_pmap->pm_prog = MOUNTPROG;
576 memset(nfs_pmap, 0, sizeof(*nfs_pmap));
577 nfs_pmap->pm_prog = NFS_PROGRAM;
581 if (!parse_options(old_opts, &data, &bg, &retry, &mnt_server, &nfs_server,
582 new_opts, sizeof(new_opts)))
584 if (!nfsmnt_check_compat(nfs_pmap, mnt_pmap))
587 if (retry == 10000 && !bg)
588 retry = 2; /* reset for fg mounts */
591 #ifdef NFS_MOUNT_DEBUG
592 printf("rsize = %d, wsize = %d, timeo = %d, retrans = %d\n",
593 data.rsize, data.wsize, data.timeo, data.retrans);
594 printf("acreg (min, max) = (%d, %d), acdir (min, max) = (%d, %d)\n",
595 data.acregmin, data.acregmax, data.acdirmin, data.acdirmax);
596 printf("port = %d, bg = %d, retry = %d, flags = %.8x\n",
597 nfs_pmap->pm_port, bg, retry, data.flags);
598 printf("mountprog = %d, mountvers = %d, nfsprog = %d, nfsvers = %d\n",
599 mnt_pmap->pm_prog, mnt_pmap->pm_vers,
600 nfs_pmap->pm_prog, nfs_pmap->pm_vers);
601 printf("soft = %d, intr = %d, posix = %d, nocto = %d, noac = %d ",
602 (data.flags & NFS_MOUNT_SOFT) != 0,
603 (data.flags & NFS_MOUNT_INTR) != 0,
604 (data.flags & NFS_MOUNT_POSIX) != 0,
605 (data.flags & NFS_MOUNT_NOCTO) != 0,
606 (data.flags & NFS_MOUNT_NOAC) != 0);
607 #if NFS_MOUNT_VERSION >= 2
609 (data.flags & NFS_MOUNT_TCP) != 0);
611 #if NFS_MOUNT_VERSION >= 4
612 printf("noacl = %d ", (data.flags & NFS_MOUNT_NOACL) != 0);
614 #if NFS_MOUNT_VERSION >= 5
615 printf("sec = %u ", data.pseudoflavor);
616 printf("readdirplus = %d ", (data.flags & NFS_MOUNT_NORDIRPLUS) != 0);
621 data.version = nfs_mount_data_version;
623 if (flags & MS_REMOUNT)
627 * If the previous mount operation on the same host was
628 * backgrounded, and the "bg" for this mount is also set,
629 * give up immediately, to avoid the initial timeout.
631 if (bg && !running_bg &&
632 prev_bg_host && strcmp(hostname, prev_bg_host) == 0) {
638 /* create mount deamon client */
641 * The following loop implements the mount retries. On the first
642 * call, "running_bg" is 0. When the mount times out, and the
643 * "bg" option is set, the exit status EX_BG will be returned.
644 * For a backgrounded mount, there will be a second call by the
645 * child process with "running_bg" set to 1.
647 * The case where the mount point is not present and the "bg"
648 * option is set, is treated as a timeout. This is done to
649 * support nested mounts.
651 * The "retry" count specified by the user is the number of
652 * minutes to retry before giving up.
654 * Only the first error message will be displayed.
656 timeout = time(NULL) + 60 * retry;
661 memcpy(&save_nfs, nfs_pmap, sizeof(save_nfs));
662 memcpy(&save_mnt, mnt_pmap, sizeof(save_mnt));
664 if (bg && stat(node, &statbuf) == -1) {
665 /* no mount point yet - sleep */
667 sleep(val); /* 1, 2, 4, 8, 16, 30, ... */
674 /* be careful not to use too many CPU cycles */
678 stat = nfs_call_mount(&mnt_server, &nfs_server,
682 memcpy(nfs_pmap, &save_nfs, sizeof(*nfs_pmap));
683 memcpy(mnt_pmap, &save_mnt, sizeof(*mnt_pmap));
687 switch(rpc_createerr.cf_stat){
690 case RPC_SYSTEMERROR:
691 if (errno == ETIMEDOUT)
694 mount_errors(*nfs_server.hostname, 0, bg);
699 mount_errors(*nfs_server.hostname, 0, bg);
702 mount_errors(*nfs_server.hostname, 1, bg);
706 prev_bg_host = xstrdup(hostname);
713 mount_errors(*nfs_server.hostname, 0, bg);
717 mount_errors(*nfs_server.hostname, 1, bg);
720 if (nfs_pmap->pm_vers == 2) {
721 if (mntres.nfsv2.fhs_status != 0) {
722 nfs_error(_("%s: %s:%s failed, reason given by server: %s"),
723 progname, hostname, dirname,
724 nfs_strerror(mntres.nfsv2.fhs_status));
727 memcpy(data.root.data,
728 (char *) mntres.nfsv2.fhstatus_u.fhs_fhandle,
730 #if NFS_MOUNT_VERSION >= 4
731 data.root.size = NFS_FHSIZE;
732 memcpy(data.old_root.data,
733 (char *) mntres.nfsv2.fhstatus_u.fhs_fhandle,
737 #if NFS_MOUNT_VERSION >= 4
738 mountres3_ok *mountres;
740 int i, *flavor, yum = 0;
741 if (mntres.nfsv3.fhs_status != 0) {
742 nfs_error(_("%s: %s:%s failed, reason given by server: %s"),
743 progname, hostname, dirname,
744 nfs_strerror(mntres.nfsv3.fhs_status));
747 #if NFS_MOUNT_VERSION >= 5
748 mountres = &mntres.nfsv3.mountres3_u.mountinfo;
749 i = mountres->auth_flavors.auth_flavors_len;
753 flavor = mountres->auth_flavors.auth_flavors_val;
755 /* If no flavour requested, use first simple
756 * flavour that is offered.
758 if (! (data.flags & NFS_MOUNT_SECFLAVOUR) &&
759 (flavor[i] == AUTH_SYS ||
760 flavor[i] == AUTH_NONE)) {
761 data.pseudoflavor = flavor[i];
762 data.flags |= NFS_MOUNT_SECFLAVOUR;
764 if (flavor[i] == data.pseudoflavor)
766 #ifdef NFS_MOUNT_DEBUG
767 printf("auth flavor %d: %d\n",
772 nfs_error(_("%s: %s:%s failed, security flavor "
774 progname, hostname, dirname);
775 /* server has registered us in rmtab, send umount */
776 nfs_call_umount(&mnt_server, &dirname);
781 fhandle = &mntres.nfsv3.mountres3_u.mountinfo.fhandle;
782 memset(data.old_root.data, 0, NFS_FHSIZE);
783 memset(&data.root, 0, sizeof(data.root));
784 data.root.size = fhandle->fhandle3_len;
785 memcpy(data.root.data,
786 (char *) fhandle->fhandle3_val,
787 fhandle->fhandle3_len);
789 data.flags |= NFS_MOUNT_VER3;
793 if (nfs_mount_data_version == 1) {
794 /* create nfs socket for kernel */
795 if (nfs_pmap->pm_prot == IPPROTO_TCP)
796 fsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
798 fsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
800 perror(_("nfs socket"));
803 if (bindresvport(fsock, 0) < 0) {
804 perror(_("nfs bindresvport"));
809 #ifdef NFS_MOUNT_DEBUG
810 printf(_("using port %d for nfs deamon\n"), nfs_pmap->pm_port);
812 nfs_saddr->sin_port = htons(nfs_pmap->pm_port);
814 * connect() the socket for kernels 1.3.10 and below only,
815 * to avoid problems with multihomed hosts.
818 if (linux_version_code() <= 0x01030a && fsock != -1
819 && connect(fsock, (struct sockaddr *) nfs_saddr,
820 sizeof (*nfs_saddr)) < 0) {
821 perror(_("nfs connect"));
825 #if NFS_MOUNT_VERSION >= 2
826 if (nfs_pmap->pm_prot == IPPROTO_TCP)
827 data.flags |= NFS_MOUNT_TCP;
829 data.flags &= ~NFS_MOUNT_TCP;
832 /* prepare data structure for kernel */
835 memcpy((char *) &data.addr, (char *) nfs_saddr, sizeof(data.addr));
836 strncpy(data.hostname, hostname, sizeof(data.hostname));
839 /* Ensure we have enough padding for the following strcat()s */
840 if (strlen(new_opts) + strlen(s) + 30 >= sizeof(new_opts)) {
841 nfs_error(_("%s: excessively long option argument"),
846 snprintf(cbuf, sizeof(cbuf)-1, "addr=%s", s);
847 strcat(new_opts, cbuf);
849 *extra_opts = xstrdup(new_opts);
851 if (!fake && !(data.flags & NFS_MOUNT_NONLM)) {
852 if (!start_statd()) {
853 nfs_error(_("%s: rpc.statd is not running but is "
854 "required for remote locking.\n"
855 " Either use '-o nolocks' to keep "
856 "locks local, or start statd."),
863 if (mount(spec, node, "nfs",
864 flags & ~(MS_USER|MS_USERS), &data)) {
865 mount_error(spec, node, errno);