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>
51 #include <sys/utsname.h>
53 #include <netinet/in.h>
54 #include <arpa/inet.h>
56 #include <sys/mount.h>
63 #include "nfsumount.h"
64 #include "nfs_mount.h"
65 #include "mount_constants.h"
68 #ifdef HAVE_RPCSVC_NFS_PROT_H
69 #include <rpcsvc/nfs_prot.h>
71 #include <linux/nfs.h>
72 #define nfsstat nfs_stat
82 static char *nfs_strerror(int stat);
84 #define MAKE_VERSION(p,q,r) (65536*(p) + 256*(q) + (r))
85 #define MAX_NFSPROT ((nfs_mount_version >= 4) ? 3 : 2)
86 #define MAX_MNTPROT ((nfs_mount_version >= 4) ? 3 : 2)
87 #define HAVE_RELIABLE_TCP (nfs_mount_version >= 4)
89 #ifndef HAVE_INET_ATON
90 #define inet_aton(a,b) (0)
93 typedef dirpath mnt2arg_t;
94 typedef dirpath mnt3arg_t;
95 typedef dirpath mntarg_t;
97 typedef struct fhstatus mnt2res_t;
98 typedef struct mountres3 mnt3res_t;
104 static char errbuf[BUFSIZ];
105 static char *erreob = &errbuf[BUFSIZ];
108 /* Convert RPC errors into strings */
109 int rpc_strerror(int);
110 int rpc_strerror(int spos)
112 int cf_stat = rpc_createerr.cf_stat;
113 int pos=0, cf_errno = rpc_createerr.cf_error.re_errno;
114 char *ptr, *estr = clnt_sperrno(cf_stat);
118 if ((ptr = index(estr, ':')))
122 if (cf_stat == RPC_SYSTEMERROR)
123 pos = snprintf(tmp, (erreob - tmp),
124 "System Error: %s", strerror(cf_errno));
126 pos = snprintf(tmp, (erreob - tmp), "RPC Error:%s", estr);
130 void mount_errors(char *, int, int);
131 void mount_errors(char *server, int will_retry, int bg)
135 static int onlyonce = 0;
139 pos = snprintf(tmp, (erreob - tmp),
140 "mount to NFS server '%s' failed: ", server);
142 pos = snprintf(tmp, (erreob - tmp),
143 "mount: mount to NFS server '%s' failed: ", server);
146 if (rpc_createerr.cf_stat == RPC_TIMEDOUT) {
147 pos = snprintf(tmp, (erreob - tmp), "timed out %s",
148 will_retry ? "(retrying)" : "(giving up)");
150 pos += rpc_strerror(pos);
153 pos = snprintf(tmp, (erreob - tmp), " %s",
154 will_retry ? "(retrying)" : "(giving up)");
159 openlog("mount", LOG_CONS|LOG_PID, LOG_AUTH);
160 syslog(LOG_ERR, "%s.", errbuf);
162 fprintf(stderr, "%s.\n", errbuf);
165 /* Define the order in which to probe for UDP/TCP services */
172 proto_probelist(enum plist list)
174 static const u_int probe_udp_tcp[] = { IPPROTO_UDP, IPPROTO_TCP, 0 };
175 static const u_int probe_both[] = { IPPROTO_TCP, IPPROTO_UDP, 0 };
176 static const u_int probe_udponly[] = { IPPROTO_UDP, 0 };
181 return probe_udp_tcp;
182 return probe_udponly;
185 /* Define the order in which NFS versions are probed on portmapper */
186 static const u_long *
187 nfs_probelist(const int vers)
189 static const u_long nfs2_probe[] = { 2, 0};
190 static const u_long nfs3_probe[] = { 3, 2, 0};
199 /* Define the order in which Mountd versions are probed on portmapper */
200 static const u_long *
201 mnt_probelist(const int vers)
203 static const u_long mnt1_probe[] = { 1, 2, 0 };
204 static const u_long mnt3_probe[] = { 3, 1, 2, 0 };
214 linux_version_code(void) {
215 struct utsname my_utsname;
218 if (uname(&my_utsname) == 0) {
219 p = atoi(strtok(my_utsname.release, "."));
220 q = atoi(strtok(NULL, "."));
221 r = atoi(strtok(NULL, "."));
222 return MAKE_VERSION(p,q,r);
228 * Unfortunately, the kernel prints annoying console messages
229 * in case of an unexpected nfs mount version (instead of
230 * just returning some error). Therefore we'll have to try
231 * and figure out what version the kernel expects.
234 * NFS_MOUNT_VERSION: these nfsmount sources at compile time
235 * nfs_mount_version: version this source and running kernel can handle
237 int nfs_mount_version = NFS_MOUNT_VERSION;
240 find_kernel_nfs_mount_version(void) {
241 static int kernel_version = -1;
242 int mnt_version = NFS_MOUNT_VERSION;
244 if (kernel_version == -1)
245 kernel_version = linux_version_code();
247 if (kernel_version) {
248 if (kernel_version < MAKE_VERSION(2,1,32))
250 else if (kernel_version < MAKE_VERSION(2,2,18))
252 else if (kernel_version < MAKE_VERSION(2,3,0))
253 mnt_version = 4; /* since 2.2.18pre9 */
254 else if (kernel_version < MAKE_VERSION(2,3,99))
256 else if (kernel_version < MAKE_VERSION(2,6,3))
261 if (mnt_version > NFS_MOUNT_VERSION)
262 mnt_version = NFS_MOUNT_VERSION;
266 int nfs_gethostbyname(const char *, struct sockaddr_in *);
267 int nfs_gethostbyname(const char *hostname, struct sockaddr_in *saddr)
271 saddr->sin_family = AF_INET;
272 if (!inet_aton(hostname, &saddr->sin_addr)) {
273 if ((hp = gethostbyname(hostname)) == NULL) {
274 fprintf(stderr, _("mount: can't get address for %s\n"),
278 if (hp->h_length > sizeof(*saddr)) {
280 _("mount: got bad hp->h_length\n"));
281 hp->h_length = sizeof(*saddr);
283 memcpy(&saddr->sin_addr, hp->h_addr, hp->h_length);
290 * getport() is very similar to pmap_getport() with
291 * the exception this version uses a non-reserve ports
292 * instead of reserve ports since reserve ports
293 * are not needed for pmap requests.
297 struct sockaddr_in *saddr,
308 saddr->sin_port = htons (PMAPPORT);
309 socket = get_socket(saddr, prot, FALSE, FALSE);
313 clnt = clntudp_bufcreate(saddr,
314 PMAPPROG, PMAPVERS, TIMEOUT, &socket,
315 UDPMSGSIZE, UDPMSGSIZE);
318 clnt = clnttcp_create(saddr,
319 PMAPPROG, PMAPVERS, &socket, 50, 500);
323 parms.pm_prog = prog;
324 parms.pm_vers = vers;
325 parms.pm_prot = prot;
326 parms.pm_port = 0; /* not needed or used */
328 stat = clnt_call(clnt, PMAPPROC_GETPORT, (xdrproc_t)xdr_pmap,
329 (caddr_t)&parms, (xdrproc_t)xdr_u_short, (caddr_t)&port, TIMEOUT);
331 clnt_geterr(clnt, &rpc_createerr.cf_error);
332 rpc_createerr.cf_stat = stat;
335 if (stat != RPC_SUCCESS)
338 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
347 * Use the portmapper to discover whether or not the service we want is
348 * available. The lists 'versions' and 'protos' define ordered sequences
349 * of service versions and udp/tcp protocols to probe for.
352 probe_port(clnt_addr_t *server,
353 const u_long *versions,
356 struct sockaddr_in *saddr = &server->saddr;
357 struct pmap *pmap = &server->pmap;
358 const u_long prog = pmap->pm_prog, *p_vers;
359 const u_int prot = (u_int)pmap->pm_prot,
361 const u_short port = (u_short) pmap->pm_port;
362 u_long vers = pmap->pm_vers;
364 p_prot = prot ? &prot : protos;
365 p_vers = vers ? &vers : versions;
366 rpc_createerr.cf_stat = 0;
368 saddr->sin_port = htons(PMAPPORT);
369 p_port = getport(saddr, prog, *p_vers, *p_prot);
371 if (!port || port == p_port) {
372 saddr->sin_port = htons(p_port);
375 "mount: trying %s prog %ld vers %ld prot %s port %d\n",
376 inet_ntoa(saddr->sin_addr), prog, *p_vers,
377 *p_prot == IPPROTO_UDP ? "udp" : "tcp", p_port);
379 if (clnt_ping(saddr, prog, *p_vers, *p_prot, NULL))
381 if (rpc_createerr.cf_stat == RPC_TIMEDOUT)
385 if (rpc_createerr.cf_stat != RPC_PROGNOTREGISTERED)
393 if (vers == pmap->pm_vers) {
397 if (vers || !*++p_vers)
405 pmap->pm_vers = *p_vers;
407 pmap->pm_prot = *p_prot;
409 pmap->pm_port = p_port;
410 rpc_createerr.cf_stat = 0;
415 probe_nfsport(clnt_addr_t *nfs_server)
417 const struct pmap *pmap = &nfs_server->pmap;
418 const u_long *probe_vers;
419 const u_int *probe_prot;
421 if (pmap->pm_vers && pmap->pm_prot && pmap->pm_port)
423 probe_vers = nfs_probelist(MAX_NFSPROT);
424 probe_prot = proto_probelist(HAVE_RELIABLE_TCP ? use_tcp : udp_only);
425 return probe_port(nfs_server, probe_vers, probe_prot);
428 int probe_mntport(clnt_addr_t *mnt_server)
430 const struct pmap *pmap = &mnt_server->pmap;
431 const u_long *probe_vers;
432 const u_int *probe_prot;
434 if (pmap->pm_vers && pmap->pm_prot && pmap->pm_port)
436 probe_vers = mnt_probelist(MAX_MNTPROT);
437 probe_prot = proto_probelist(HAVE_RELIABLE_TCP ? udp_tcp : udp_only);
438 return probe_port(mnt_server, probe_vers, probe_prot);
442 probe_bothports(clnt_addr_t *mnt_server, clnt_addr_t *nfs_server)
444 struct pmap *nfs_pmap = &nfs_server->pmap;
445 struct pmap *mnt_pmap = &mnt_server->pmap;
446 struct pmap save_nfs, save_mnt;
448 const u_long *probe_vers;
450 if (mnt_pmap->pm_vers && !nfs_pmap->pm_vers)
451 nfs_pmap->pm_vers = mntvers_to_nfs(mnt_pmap->pm_vers);
452 else if (nfs_pmap->pm_vers && !mnt_pmap->pm_vers)
453 mnt_pmap->pm_vers = nfsvers_to_mnt(nfs_pmap->pm_vers);
454 if (nfs_pmap->pm_vers)
456 memcpy(&save_nfs, nfs_pmap, sizeof(save_nfs));
457 memcpy(&save_mnt, mnt_pmap, sizeof(save_mnt));
458 for (probe_vers = mnt_probelist(MAX_MNTPROT); *probe_vers; probe_vers++) {
459 nfs_pmap->pm_vers = mntvers_to_nfs(*probe_vers);
460 if ((res = probe_nfsport(nfs_server) != 0)) {
461 mnt_pmap->pm_vers = nfsvers_to_mnt(nfs_pmap->pm_vers);
462 if ((res = probe_mntport(mnt_server)) != 0)
464 memcpy(mnt_pmap, &save_mnt, sizeof(*mnt_pmap));
466 switch (rpc_createerr.cf_stat) {
467 case RPC_PROGVERSMISMATCH:
468 case RPC_PROGNOTREGISTERED:
473 memcpy(nfs_pmap, &save_nfs, sizeof(*nfs_pmap));
478 if (!probe_nfsport(nfs_server))
480 return probe_mntport(mnt_server);
483 static inline enum clnt_stat
484 nfs3_mount(CLIENT *clnt, mnt3arg_t *mnt3arg, mnt3res_t *mnt3res)
486 return clnt_call(clnt, MOUNTPROC3_MNT,
487 (xdrproc_t) xdr_dirpath, (caddr_t) mnt3arg,
488 (xdrproc_t) xdr_mountres3, (caddr_t) mnt3res,
492 static inline enum clnt_stat
493 nfs2_mount(CLIENT *clnt, mnt2arg_t *mnt2arg, mnt2res_t *mnt2res)
495 return clnt_call(clnt, MOUNTPROC_MNT,
496 (xdrproc_t) xdr_dirpath, (caddr_t) mnt2arg,
497 (xdrproc_t) xdr_fhstatus, (caddr_t) mnt2res,
502 nfs_call_mount(clnt_addr_t *mnt_server, clnt_addr_t *nfs_server,
503 mntarg_t *mntarg, mntres_t *mntres)
509 if (!probe_bothports(mnt_server, nfs_server))
512 clnt = mnt_openclnt(mnt_server, &msock);
515 /* make pointers in xdr_mountres3 NULL so
516 * that xdr_array allocates memory for us
518 memset(mntres, 0, sizeof(*mntres));
519 switch (mnt_server->pmap.pm_vers) {
521 stat = nfs3_mount(clnt, mntarg, &mntres->nfsv3);
525 stat = nfs2_mount(clnt, mntarg, &mntres->nfsv2);
530 if (stat != RPC_SUCCESS) {
531 clnt_geterr(clnt, &rpc_createerr.cf_error);
532 rpc_createerr.cf_stat = stat;
534 mnt_closeclnt(clnt, msock);
535 if (stat == RPC_SUCCESS)
542 parse_options(char *old_opts, struct nfs_mount_data *data,
543 int *bg, int *retry, clnt_addr_t *mnt_server,
544 clnt_addr_t *nfs_server, char *new_opts, const int opt_size)
546 struct sockaddr_in *mnt_saddr = &mnt_server->saddr;
547 struct pmap *mnt_pmap = &mnt_server->pmap;
548 struct pmap *nfs_pmap = &nfs_server->pmap;
551 char *mounthost = NULL;
557 len = strlen(new_opts);
558 for (opt = strtok(old_opts, ","); opt; opt = strtok(NULL, ",")) {
559 if (strlen(opt) >= sizeof(cbuf))
561 if ((opteq = strchr(opt, '=')) && isdigit(opteq[1])) {
562 int val = atoi(opteq + 1);
564 /* printf("opt=%s\n", opt); */
565 if (!strcmp(opt, "rsize"))
567 else if (!strcmp(opt, "wsize"))
569 else if (!strcmp(opt, "timeo"))
571 else if (!strcmp(opt, "retrans"))
573 else if (!strcmp(opt, "acregmin"))
574 data->acregmin = val;
575 else if (!strcmp(opt, "acregmax"))
576 data->acregmax = val;
577 else if (!strcmp(opt, "acdirmin"))
578 data->acdirmin = val;
579 else if (!strcmp(opt, "acdirmax"))
580 data->acdirmax = val;
581 else if (!strcmp(opt, "actimeo")) {
582 data->acregmin = val;
583 data->acregmax = val;
584 data->acdirmin = val;
585 data->acdirmax = val;
587 else if (!strcmp(opt, "retry"))
589 else if (!strcmp(opt, "port"))
590 nfs_pmap->pm_port = val;
591 else if (!strcmp(opt, "mountport"))
592 mnt_pmap->pm_port = val;
593 else if (!strcmp(opt, "mountprog"))
594 mnt_pmap->pm_prog = val;
595 else if (!strcmp(opt, "mountvers"))
596 mnt_pmap->pm_vers = val;
597 else if (!strcmp(opt, "mounthost"))
598 mounthost=xstrndup(opteq+1, strcspn(opteq+1," \t\n\r,"));
599 else if (!strcmp(opt, "nfsprog"))
600 nfs_pmap->pm_prog = val;
601 else if (!strcmp(opt, "nfsvers") ||
602 !strcmp(opt, "vers")) {
603 nfs_pmap->pm_vers = val;
605 #if NFS_MOUNT_VERSION >= 2
606 } else if (!strcmp(opt, "namlen")) {
607 if (nfs_mount_version >= 2)
612 } else if (!strcmp(opt, "addr")) {
617 sprintf(cbuf, "%s=%s,", opt, opteq+1);
620 if (!strcmp(opt, "proto")) {
621 if (!strcmp(opteq+1, "udp")) {
622 nfs_pmap->pm_prot = IPPROTO_UDP;
623 mnt_pmap->pm_prot = IPPROTO_UDP;
624 #if NFS_MOUNT_VERSION >= 2
625 data->flags &= ~NFS_MOUNT_TCP;
626 } else if (!strcmp(opteq+1, "tcp") &&
627 nfs_mount_version > 2) {
628 nfs_pmap->pm_prot = IPPROTO_TCP;
629 mnt_pmap->pm_prot = IPPROTO_TCP;
630 data->flags |= NFS_MOUNT_TCP;
634 #if NFS_MOUNT_VERSION >= 5
635 } else if (!strcmp(opt, "sec")) {
636 char *secflavor = opteq+1;
638 if (nfs_mount_version < 5) {
639 printf(_("Warning: ignoring sec=%s option\n"), secflavor);
641 } else if (!strcmp(secflavor, "none"))
642 data->pseudoflavor = AUTH_NONE;
643 else if (!strcmp(secflavor, "sys"))
644 data->pseudoflavor = AUTH_SYS;
645 else if (!strcmp(secflavor, "krb5"))
646 data->pseudoflavor = AUTH_GSS_KRB5;
647 else if (!strcmp(secflavor, "krb5i"))
648 data->pseudoflavor = AUTH_GSS_KRB5I;
649 else if (!strcmp(secflavor, "krb5p"))
650 data->pseudoflavor = AUTH_GSS_KRB5P;
651 else if (!strcmp(secflavor, "lipkey"))
652 data->pseudoflavor = AUTH_GSS_LKEY;
653 else if (!strcmp(secflavor, "lipkey-i"))
654 data->pseudoflavor = AUTH_GSS_LKEYI;
655 else if (!strcmp(secflavor, "lipkey-p"))
656 data->pseudoflavor = AUTH_GSS_LKEYP;
657 else if (!strcmp(secflavor, "spkm3"))
658 data->pseudoflavor = AUTH_GSS_SPKM;
659 else if (!strcmp(secflavor, "spkm3i"))
660 data->pseudoflavor = AUTH_GSS_SPKMI;
661 else if (!strcmp(secflavor, "spkm3p"))
662 data->pseudoflavor = AUTH_GSS_SPKMP;
664 printf(_("Warning: Unrecognized security flavor %s.\n"),
668 data->flags |= NFS_MOUNT_SECFLAVOUR;
670 } else if (!strcmp(opt, "mounthost"))
671 mounthost=xstrndup(opteq+1,
672 strcspn(opteq+1," \t\n\r,"));
673 else if (!strcmp(opt, "context")) {
674 char *context = opteq + 1;
676 if (strlen(context) > NFS_MAX_CONTEXT_LEN) {
677 printf(_("context parameter exceeds limit of %d\n"),
678 NFS_MAX_CONTEXT_LEN);
681 strncpy(data->context, context, NFS_MAX_CONTEXT_LEN);
684 sprintf(cbuf, "%s=%s,", opt, opteq+1);
687 if (!strncmp(opt, "no", 2)) {
691 if (!strcmp(opt, "bg"))
693 else if (!strcmp(opt, "fg"))
695 else if (!strcmp(opt, "soft")) {
696 data->flags &= ~NFS_MOUNT_SOFT;
698 data->flags |= NFS_MOUNT_SOFT;
699 } else if (!strcmp(opt, "hard")) {
700 data->flags &= ~NFS_MOUNT_SOFT;
702 data->flags |= NFS_MOUNT_SOFT;
703 } else if (!strcmp(opt, "intr")) {
704 data->flags &= ~NFS_MOUNT_INTR;
706 data->flags |= NFS_MOUNT_INTR;
707 } else if (!strcmp(opt, "posix")) {
708 data->flags &= ~NFS_MOUNT_POSIX;
710 data->flags |= NFS_MOUNT_POSIX;
711 } else if (!strcmp(opt, "cto")) {
712 data->flags &= ~NFS_MOUNT_NOCTO;
714 data->flags |= NFS_MOUNT_NOCTO;
715 } else if (!strcmp(opt, "ac")) {
716 data->flags &= ~NFS_MOUNT_NOAC;
718 data->flags |= NFS_MOUNT_NOAC;
719 #if NFS_MOUNT_VERSION >= 2
720 } else if (!strcmp(opt, "tcp")) {
721 data->flags &= ~NFS_MOUNT_TCP;
723 if (nfs_mount_version < 2)
725 nfs_pmap->pm_prot = IPPROTO_TCP;
726 mnt_pmap->pm_prot = IPPROTO_TCP;
727 data->flags |= NFS_MOUNT_TCP;
729 mnt_pmap->pm_prot = IPPROTO_UDP;
730 nfs_pmap->pm_prot = IPPROTO_UDP;
732 } else if (!strcmp(opt, "udp")) {
733 data->flags &= ~NFS_MOUNT_TCP;
735 if (nfs_mount_version < 2)
737 nfs_pmap->pm_prot = IPPROTO_TCP;
738 mnt_pmap->pm_prot = IPPROTO_TCP;
739 data->flags |= NFS_MOUNT_TCP;
741 nfs_pmap->pm_prot = IPPROTO_UDP;
742 mnt_pmap->pm_prot = IPPROTO_UDP;
745 #if NFS_MOUNT_VERSION >= 3
746 } else if (!strcmp(opt, "lock")) {
747 data->flags &= ~NFS_MOUNT_NONLM;
749 if (nfs_mount_version < 3)
751 data->flags |= NFS_MOUNT_NONLM;
754 #if NFS_MOUNT_VERSION >= 4
755 } else if (!strcmp(opt, "broken_suid")) {
756 data->flags &= ~NFS_MOUNT_BROKEN_SUID;
758 if (nfs_mount_version < 4)
760 data->flags |= NFS_MOUNT_BROKEN_SUID;
762 } else if (!strcmp(opt, "acl")) {
763 data->flags &= ~NFS_MOUNT_NOACL;
765 data->flags |= NFS_MOUNT_NOACL;
769 printf(_("Unsupported nfs mount option: "
770 "%s%s\n"), val ? "" : "no", opt);
773 sprintf(cbuf, val ? "%s,":"no%s,", opt);
776 if (len >= opt_size) {
777 printf(_("mount: excessively long option argument\n"));
780 strcat(new_opts, cbuf);
782 /* See if the nfs host = mount host. */
784 if (!nfs_gethostbyname(mounthost, mnt_saddr))
786 *mnt_server->hostname = mounthost;
790 printf(_("Bad nfs mount parameter: %s\n"), opt);
796 nfsmnt_check_compat(const struct pmap *nfs_pmap, const struct pmap *mnt_pmap)
798 if (nfs_pmap->pm_vers &&
799 (nfs_pmap->pm_vers > MAX_NFSPROT || nfs_pmap->pm_vers < 2)) {
800 if (nfs_pmap->pm_vers == 4)
801 fprintf(stderr, _("'vers=4' is not supported. "
802 "Use '-t nfs4' instead.\n"));
804 fprintf(stderr, _("NFS version %ld is not supported.\n"),
808 if (mnt_pmap->pm_vers > MAX_MNTPROT) {
809 fprintf(stderr, _("NFS mount version %ld s not supported.\n"),
819 nfsmount(const char *spec, const char *node, int *flags,
820 char **extra_opts, char **mount_opts, int *nfs_mount_vers,
821 int running_bg, int *need_statd)
823 static char *prev_bg_host;
825 char *hostname, *dirname, *old_opts, *mounthost = NULL;
826 char new_opts[1024], cbuf[1024];
827 static struct nfs_mount_data data;
829 static int doonce = 0;
831 clnt_addr_t mnt_server = { &mounthost, };
832 clnt_addr_t nfs_server = { &hostname, };
833 struct sockaddr_in *nfs_saddr = &nfs_server.saddr;
834 struct pmap *mnt_pmap = &mnt_server.pmap,
835 *nfs_pmap = &nfs_server.pmap;
836 struct pmap save_mnt, save_nfs;
845 int retval = EX_FAIL;
850 /* The version to try is either specified or 0
851 In case it is 0 we tell the caller what we tried */
852 if (!*nfs_mount_vers)
853 *nfs_mount_vers = find_kernel_nfs_mount_version();
854 nfs_mount_version = *nfs_mount_vers;
856 if (strlen(spec) >= sizeof(hostdir)) {
857 fprintf(stderr, _("mount: "
858 "excessively long host:dir argument\n"));
861 strcpy(hostdir, spec);
862 if ((s = strchr(hostdir, ':'))) {
866 /* Ignore all but first hostname in replicated mounts
867 until they can be fully supported. (mack@sgi.com) */
868 if ((s = strchr(hostdir, ','))) {
872 "multiple hostnames not supported\n"));
877 "directory to mount not in host:dir format\n"));
881 if (!nfs_gethostbyname(hostname, nfs_saddr))
883 mounthost = hostname;
884 memcpy (&mnt_server.saddr, nfs_saddr, sizeof (mnt_server.saddr));
886 /* add IP address to mtab options for use when unmounting */
888 s = inet_ntoa(nfs_saddr->sin_addr);
889 old_opts = *extra_opts;
893 /* Set default options.
894 * rsize/wsize (and bsize, for ver >= 3) are left 0 in order to
895 * let the kernel decide.
896 * timeo is filled in after we know whether it'll be TCP or UDP. */
897 memset(&data, 0, sizeof(data));
902 #if NFS_MOUNT_VERSION >= 2
903 data.namlen = NAME_MAX;
907 retry = 10000; /* 10000 minutes ~ 1 week */
909 memset(mnt_pmap, 0, sizeof(*mnt_pmap));
910 mnt_pmap->pm_prog = MOUNTPROG;
911 memset(nfs_pmap, 0, sizeof(*nfs_pmap));
912 nfs_pmap->pm_prog = NFS_PROGRAM;
916 if (!parse_options(old_opts, &data, &bg, &retry, &mnt_server, &nfs_server,
917 new_opts, sizeof(new_opts)))
919 if (!nfsmnt_check_compat(nfs_pmap, mnt_pmap))
922 if (retry == 10000 && !bg)
923 retry = 2; /* reset for fg mounts */
926 #ifdef NFS_MOUNT_DEBUG
927 printf("rsize = %d, wsize = %d, timeo = %d, retrans = %d\n",
928 data.rsize, data.wsize, data.timeo, data.retrans);
929 printf("acreg (min, max) = (%d, %d), acdir (min, max) = (%d, %d)\n",
930 data.acregmin, data.acregmax, data.acdirmin, data.acdirmax);
931 printf("port = %d, bg = %d, retry = %d, flags = %.8x\n",
932 nfs_pmap->pm_port, bg, retry, data.flags);
933 printf("mountprog = %d, mountvers = %d, nfsprog = %d, nfsvers = %d\n",
934 mnt_pmap->pm_prog, mnt_pmap->pm_vers,
935 nfs_pmap->pm_prog, nfs_pmap->pm_vers);
936 printf("soft = %d, intr = %d, posix = %d, nocto = %d, noac = %d ",
937 (data.flags & NFS_MOUNT_SOFT) != 0,
938 (data.flags & NFS_MOUNT_INTR) != 0,
939 (data.flags & NFS_MOUNT_POSIX) != 0,
940 (data.flags & NFS_MOUNT_NOCTO) != 0,
941 (data.flags & NFS_MOUNT_NOAC) != 0);
942 #if NFS_MOUNT_VERSION >= 2
944 (data.flags & NFS_MOUNT_TCP) != 0);
946 #if NFS_MOUNT_VERSION >= 4
947 printf("noacl = %d ", (data.flags & NFS_MOUNT_NOACL) != 0);
949 #if NFS_MOUNT_VERSION >= 5
950 printf("sec = %u ", data.pseudoflavor);
955 data.version = nfs_mount_version;
956 *mount_opts = (char *) &data;
958 if (*flags & MS_REMOUNT)
962 * If the previous mount operation on the same host was
963 * backgrounded, and the "bg" for this mount is also set,
964 * give up immediately, to avoid the initial timeout.
966 if (bg && !running_bg &&
967 prev_bg_host && strcmp(hostname, prev_bg_host) == 0) {
973 /* create mount deamon client */
976 * The following loop implements the mount retries. On the first
977 * call, "running_bg" is 0. When the mount times out, and the
978 * "bg" option is set, the exit status EX_BG will be returned.
979 * For a backgrounded mount, there will be a second call by the
980 * child process with "running_bg" set to 1.
982 * The case where the mount point is not present and the "bg"
983 * option is set, is treated as a timeout. This is done to
984 * support nested mounts.
986 * The "retry" count specified by the user is the number of
987 * minutes to retry before giving up.
989 * Only the first error message will be displayed.
991 timeout = time(NULL) + 60 * retry;
996 memcpy(&save_nfs, nfs_pmap, sizeof(save_nfs));
997 memcpy(&save_mnt, mnt_pmap, sizeof(save_mnt));
999 if (bg && stat(node, &statbuf) == -1) {
1000 /* no mount point yet - sleep */
1002 sleep(val); /* 1, 2, 4, 8, 16, 30, ... */
1009 /* be careful not to use too many CPU cycles */
1013 stat = nfs_call_mount(&mnt_server, &nfs_server,
1017 memcpy(nfs_pmap, &save_nfs, sizeof(*nfs_pmap));
1018 memcpy(mnt_pmap, &save_mnt, sizeof(*mnt_pmap));
1022 switch(rpc_createerr.cf_stat){
1025 case RPC_SYSTEMERROR:
1026 if (errno == ETIMEDOUT)
1029 mount_errors(*nfs_server.hostname, 0, bg);
1034 mount_errors(*nfs_server.hostname, 0, bg);
1037 mount_errors(*nfs_server.hostname, 1, bg);
1041 prev_bg_host = xstrdup(hostname);
1048 mount_errors(*nfs_server.hostname, 0, bg);
1052 mount_errors(*nfs_server.hostname, 1, bg);
1055 if (nfs_pmap->pm_vers == 2) {
1056 if (mntres.nfsv2.fhs_status != 0) {
1058 _("mount: %s:%s failed, reason given by server: %s\n"),
1060 nfs_strerror(mntres.nfsv2.fhs_status));
1063 memcpy(data.root.data,
1064 (char *) mntres.nfsv2.fhstatus_u.fhs_fhandle,
1066 #if NFS_MOUNT_VERSION >= 4
1067 data.root.size = NFS_FHSIZE;
1068 memcpy(data.old_root.data,
1069 (char *) mntres.nfsv2.fhstatus_u.fhs_fhandle,
1073 #if NFS_MOUNT_VERSION >= 4
1074 mountres3_ok *mountres;
1076 int i, *flavor, yum = 0;
1077 if (mntres.nfsv3.fhs_status != 0) {
1079 _("mount: %s:%s failed, reason given by server: %s\n"),
1081 nfs_strerror(mntres.nfsv3.fhs_status));
1084 #if NFS_MOUNT_VERSION >= 5
1085 mountres = &mntres.nfsv3.mountres3_u.mountinfo;
1086 i = mountres->auth_flavors.auth_flavors_len;
1088 goto noauth_flavors;
1090 flavor = mountres->auth_flavors.auth_flavors_val;
1092 /* If no flavour requested, use first simple
1093 * flavour that is offered.
1095 if (! (data.flags & NFS_MOUNT_SECFLAVOUR) &&
1096 (flavor[i] == AUTH_SYS ||
1097 flavor[i] == AUTH_NONE)) {
1098 data.pseudoflavor = flavor[i];
1099 data.flags |= NFS_MOUNT_SECFLAVOUR;
1101 if (flavor[i] == data.pseudoflavor)
1103 #ifdef NFS_MOUNT_DEBUG
1104 printf("auth flavor %d: %d\n",
1110 "mount: %s:%s failed, "
1111 "security flavor not supported\n",
1113 /* server has registered us in rmtab, send umount */
1114 nfs_call_umount(&mnt_server, &dirname);
1119 fhandle = &mntres.nfsv3.mountres3_u.mountinfo.fhandle;
1120 memset(data.old_root.data, 0, NFS_FHSIZE);
1121 memset(&data.root, 0, sizeof(data.root));
1122 data.root.size = fhandle->fhandle3_len;
1123 memcpy(data.root.data,
1124 (char *) fhandle->fhandle3_val,
1125 fhandle->fhandle3_len);
1127 data.flags |= NFS_MOUNT_VER3;
1131 if (nfs_mount_version == 1) {
1132 /* create nfs socket for kernel */
1133 if (nfs_pmap->pm_prot == IPPROTO_TCP)
1134 fsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
1136 fsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
1138 perror(_("nfs socket"));
1141 if (bindresvport(fsock, 0) < 0) {
1142 perror(_("nfs bindresvport"));
1147 #ifdef NFS_MOUNT_DEBUG
1148 printf(_("using port %d for nfs deamon\n"), nfs_pmap->pm_port);
1150 nfs_saddr->sin_port = htons(nfs_pmap->pm_port);
1152 * connect() the socket for kernels 1.3.10 and below only,
1153 * to avoid problems with multihomed hosts.
1156 if (linux_version_code() <= 0x01030a && fsock != -1
1157 && connect(fsock, (struct sockaddr *) nfs_saddr,
1158 sizeof (*nfs_saddr)) < 0) {
1159 perror(_("nfs connect"));
1163 #if NFS_MOUNT_VERSION >= 2
1164 if (nfs_pmap->pm_prot == IPPROTO_TCP)
1165 data.flags |= NFS_MOUNT_TCP;
1167 data.flags &= ~NFS_MOUNT_TCP;
1170 /* prepare data structure for kernel */
1173 memcpy((char *) &data.addr, (char *) nfs_saddr, sizeof(data.addr));
1174 strncpy(data.hostname, hostname, sizeof(data.hostname));
1177 /* Ensure we have enough padding for the following strcat()s */
1178 if (strlen(new_opts) + strlen(s) + 30 >= sizeof(new_opts)) {
1179 fprintf(stderr, _("mount: "
1180 "excessively long option argument\n"));
1184 snprintf(cbuf, sizeof(cbuf)-1, "addr=%s", s);
1185 strcat(new_opts, cbuf);
1187 *extra_opts = xstrdup(new_opts);
1188 *need_statd = ! (data.flags & NFS_MOUNT_NONLM);
1199 * We need to translate between nfs status return values and
1200 * the local errno values which may not be the same.
1202 * Andreas Schwab <schwab@LS5.informatik.uni-dortmund.de>: change errno:
1203 * "after #include <errno.h> the symbol errno is reserved for any use,
1204 * it cannot even be used as a struct tag or field name".
1208 #define EDQUOT ENOSPC
1216 { NFSERR_PERM, EPERM },
1217 { NFSERR_NOENT, ENOENT },
1219 { NFSERR_NXIO, ENXIO },
1220 { NFSERR_ACCES, EACCES },
1221 { NFSERR_EXIST, EEXIST },
1222 { NFSERR_NODEV, ENODEV },
1223 { NFSERR_NOTDIR, ENOTDIR },
1224 { NFSERR_ISDIR, EISDIR },
1226 { NFSERR_INVAL, EINVAL }, /* that Sun forgot */
1228 { NFSERR_FBIG, EFBIG },
1229 { NFSERR_NOSPC, ENOSPC },
1230 { NFSERR_ROFS, EROFS },
1231 { NFSERR_NAMETOOLONG, ENAMETOOLONG },
1232 { NFSERR_NOTEMPTY, ENOTEMPTY },
1233 { NFSERR_DQUOT, EDQUOT },
1234 { NFSERR_STALE, ESTALE },
1236 { NFSERR_WFLUSH, EWFLUSH },
1238 /* Throw in some NFSv3 values for even more fun (HP returns these) */
1244 static char *nfs_strerror(int stat)
1247 static char buf[256];
1249 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
1250 if (nfs_errtbl[i].stat == stat)
1251 return strerror(nfs_errtbl[i].errnum);
1253 sprintf(buf, _("unknown nfs status return value: %d"), stat);