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);
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, "sys"))
642 data->pseudoflavor = AUTH_SYS;
643 else if (!strcmp(secflavor, "krb5"))
644 data->pseudoflavor = AUTH_GSS_KRB5;
645 else if (!strcmp(secflavor, "krb5i"))
646 data->pseudoflavor = AUTH_GSS_KRB5I;
647 else if (!strcmp(secflavor, "krb5p"))
648 data->pseudoflavor = AUTH_GSS_KRB5P;
649 else if (!strcmp(secflavor, "lipkey"))
650 data->pseudoflavor = AUTH_GSS_LKEY;
651 else if (!strcmp(secflavor, "lipkey-i"))
652 data->pseudoflavor = AUTH_GSS_LKEYI;
653 else if (!strcmp(secflavor, "lipkey-p"))
654 data->pseudoflavor = AUTH_GSS_LKEYP;
655 else if (!strcmp(secflavor, "spkm3"))
656 data->pseudoflavor = AUTH_GSS_SPKM;
657 else if (!strcmp(secflavor, "spkm3i"))
658 data->pseudoflavor = AUTH_GSS_SPKMI;
659 else if (!strcmp(secflavor, "spkm3p"))
660 data->pseudoflavor = AUTH_GSS_SPKMP;
662 printf(_("Warning: Unrecognized security flavor %s.\n"),
666 data->flags |= NFS_MOUNT_SECFLAVOUR;
668 } else if (!strcmp(opt, "mounthost"))
669 mounthost=xstrndup(opteq+1,
670 strcspn(opteq+1," \t\n\r,"));
671 else if (!strcmp(opt, "context")) {
672 char *context = opteq + 1;
674 if (strlen(context) > NFS_MAX_CONTEXT_LEN) {
675 printf(_("context parameter exceeds limit of %d\n"),
676 NFS_MAX_CONTEXT_LEN);
679 strncpy(data->context, context, NFS_MAX_CONTEXT_LEN);
682 sprintf(cbuf, "%s=%s,", opt, opteq+1);
685 if (!strncmp(opt, "no", 2)) {
689 if (!strcmp(opt, "bg"))
691 else if (!strcmp(opt, "fg"))
693 else if (!strcmp(opt, "soft")) {
694 data->flags &= ~NFS_MOUNT_SOFT;
696 data->flags |= NFS_MOUNT_SOFT;
697 } else if (!strcmp(opt, "hard")) {
698 data->flags &= ~NFS_MOUNT_SOFT;
700 data->flags |= NFS_MOUNT_SOFT;
701 } else if (!strcmp(opt, "intr")) {
702 data->flags &= ~NFS_MOUNT_INTR;
704 data->flags |= NFS_MOUNT_INTR;
705 } else if (!strcmp(opt, "posix")) {
706 data->flags &= ~NFS_MOUNT_POSIX;
708 data->flags |= NFS_MOUNT_POSIX;
709 } else if (!strcmp(opt, "cto")) {
710 data->flags &= ~NFS_MOUNT_NOCTO;
712 data->flags |= NFS_MOUNT_NOCTO;
713 } else if (!strcmp(opt, "ac")) {
714 data->flags &= ~NFS_MOUNT_NOAC;
716 data->flags |= NFS_MOUNT_NOAC;
717 #if NFS_MOUNT_VERSION >= 2
718 } else if (!strcmp(opt, "tcp")) {
719 data->flags &= ~NFS_MOUNT_TCP;
721 if (nfs_mount_version < 2)
723 nfs_pmap->pm_prot = IPPROTO_TCP;
724 mnt_pmap->pm_prot = IPPROTO_TCP;
725 data->flags |= NFS_MOUNT_TCP;
727 mnt_pmap->pm_prot = IPPROTO_UDP;
728 nfs_pmap->pm_prot = IPPROTO_UDP;
730 } else if (!strcmp(opt, "udp")) {
731 data->flags &= ~NFS_MOUNT_TCP;
733 if (nfs_mount_version < 2)
735 nfs_pmap->pm_prot = IPPROTO_TCP;
736 mnt_pmap->pm_prot = IPPROTO_TCP;
737 data->flags |= NFS_MOUNT_TCP;
739 nfs_pmap->pm_prot = IPPROTO_UDP;
740 mnt_pmap->pm_prot = IPPROTO_UDP;
743 #if NFS_MOUNT_VERSION >= 3
744 } else if (!strcmp(opt, "lock")) {
745 data->flags &= ~NFS_MOUNT_NONLM;
747 if (nfs_mount_version < 3)
749 data->flags |= NFS_MOUNT_NONLM;
752 #if NFS_MOUNT_VERSION >= 4
753 } else if (!strcmp(opt, "broken_suid")) {
754 data->flags &= ~NFS_MOUNT_BROKEN_SUID;
756 if (nfs_mount_version < 4)
758 data->flags |= NFS_MOUNT_BROKEN_SUID;
760 } else if (!strcmp(opt, "acl")) {
761 data->flags &= ~NFS_MOUNT_NOACL;
763 data->flags |= NFS_MOUNT_NOACL;
767 printf(_("Unsupported nfs mount option: "
768 "%s%s\n"), val ? "" : "no", opt);
771 sprintf(cbuf, val ? "%s,":"no%s,", opt);
774 if (len >= opt_size) {
775 printf(_("mount: excessively long option argument\n"));
778 strcat(new_opts, cbuf);
780 /* See if the nfs host = mount host. */
782 if (!nfs_gethostbyname(mounthost, mnt_saddr))
784 *mnt_server->hostname = mounthost;
788 printf(_("Bad nfs mount parameter: %s\n"), opt);
794 nfsmnt_check_compat(const struct pmap *nfs_pmap, const struct pmap *mnt_pmap)
796 if (nfs_pmap->pm_vers &&
797 (nfs_pmap->pm_vers > MAX_NFSPROT || nfs_pmap->pm_vers < 2)) {
798 if (nfs_pmap->pm_vers == 4)
799 fprintf(stderr, _("'vers=4' is not supported. "
800 "Use '-t nfs4' instead.\n"));
802 fprintf(stderr, _("NFS version %ld is not supported.\n"),
806 if (mnt_pmap->pm_vers > MAX_MNTPROT) {
807 fprintf(stderr, _("NFS mount version %ld s not supported.\n"),
817 nfsmount(const char *spec, const char *node, int *flags,
818 char **extra_opts, char **mount_opts, int *nfs_mount_vers,
821 static char *prev_bg_host;
823 char *hostname, *dirname, *old_opts, *mounthost = NULL;
824 char new_opts[1024], cbuf[1024];
825 static struct nfs_mount_data data;
827 static int doonce = 0;
829 clnt_addr_t mnt_server = { &mounthost, };
830 clnt_addr_t nfs_server = { &hostname, };
831 struct sockaddr_in *nfs_saddr = &nfs_server.saddr;
832 struct pmap *mnt_pmap = &mnt_server.pmap,
833 *nfs_pmap = &nfs_server.pmap;
834 struct pmap save_mnt, save_nfs;
848 /* The version to try is either specified or 0
849 In case it is 0 we tell the caller what we tried */
850 if (!*nfs_mount_vers)
851 *nfs_mount_vers = find_kernel_nfs_mount_version();
852 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;
905 data.pseudoflavor = AUTH_SYS;
908 retry = 10000; /* 10000 minutes ~ 1 week */
910 memset(mnt_pmap, 0, sizeof(*mnt_pmap));
911 mnt_pmap->pm_prog = MOUNTPROG;
912 memset(nfs_pmap, 0, sizeof(*nfs_pmap));
913 nfs_pmap->pm_prog = NFS_PROGRAM;
917 if (!parse_options(old_opts, &data, &bg, &retry, &mnt_server, &nfs_server,
918 new_opts, sizeof(new_opts)))
920 if (!nfsmnt_check_compat(nfs_pmap, mnt_pmap))
923 if (retry == 10000 && !bg)
924 retry = 2; /* reset for fg mounts */
927 #ifdef NFS_MOUNT_DEBUG
928 printf("rsize = %d, wsize = %d, timeo = %d, retrans = %d\n",
929 data.rsize, data.wsize, data.timeo, data.retrans);
930 printf("acreg (min, max) = (%d, %d), acdir (min, max) = (%d, %d)\n",
931 data.acregmin, data.acregmax, data.acdirmin, data.acdirmax);
932 printf("port = %d, bg = %d, retry = %d, flags = %.8x\n",
933 nfs_pmap->pm_port, bg, retry, data.flags);
934 printf("mountprog = %d, mountvers = %d, nfsprog = %d, nfsvers = %d\n",
935 mnt_pmap->pm_prog, mnt_pmap->pm_vers,
936 nfs_pmap->pm_prog, nfs_pmap->pm_vers);
937 printf("soft = %d, intr = %d, posix = %d, nocto = %d, noac = %d ",
938 (data.flags & NFS_MOUNT_SOFT) != 0,
939 (data.flags & NFS_MOUNT_INTR) != 0,
940 (data.flags & NFS_MOUNT_POSIX) != 0,
941 (data.flags & NFS_MOUNT_NOCTO) != 0,
942 (data.flags & NFS_MOUNT_NOAC) != 0);
943 #if NFS_MOUNT_VERSION >= 2
945 (data.flags & NFS_MOUNT_TCP) != 0);
947 #if NFS_MOUNT_VERSION >= 4
948 printf("noacl = %d ", (data.flags & NFS_MOUNT_NOACL) != 0);
950 #if NFS_MOUNT_VERSION >= 5
951 printf("sec = %u ", data.pseudoflavor);
956 data.version = nfs_mount_version;
957 *mount_opts = (char *) &data;
959 if (*flags & MS_REMOUNT)
963 * If the previous mount operation on the same host was
964 * backgrounded, and the "bg" for this mount is also set,
965 * give up immediately, to avoid the initial timeout.
967 if (bg && !running_bg &&
968 prev_bg_host && strcmp(hostname, prev_bg_host) == 0) {
974 /* create mount deamon client */
977 * The following loop implements the mount retries. On the first
978 * call, "running_bg" is 0. When the mount times out, and the
979 * "bg" option is set, the exit status EX_BG will be returned.
980 * For a backgrounded mount, there will be a second call by the
981 * child process with "running_bg" set to 1.
983 * The case where the mount point is not present and the "bg"
984 * option is set, is treated as a timeout. This is done to
985 * support nested mounts.
987 * The "retry" count specified by the user is the number of
988 * minutes to retry before giving up.
990 * Only the first error message will be displayed.
992 timeout = time(NULL) + 60 * retry;
997 memcpy(&save_nfs, nfs_pmap, sizeof(save_nfs));
998 memcpy(&save_mnt, mnt_pmap, sizeof(save_mnt));
1000 if (bg && stat(node, &statbuf) == -1) {
1001 /* no mount point yet - sleep */
1003 sleep(val); /* 1, 2, 4, 8, 16, 30, ... */
1010 /* be careful not to use too many CPU cycles */
1014 stat = nfs_call_mount(&mnt_server, &nfs_server,
1018 memcpy(nfs_pmap, &save_nfs, sizeof(*nfs_pmap));
1019 memcpy(mnt_pmap, &save_mnt, sizeof(*mnt_pmap));
1023 switch(rpc_createerr.cf_stat){
1026 case RPC_SYSTEMERROR:
1027 if (errno == ETIMEDOUT)
1030 mount_errors(*nfs_server.hostname, 0, bg);
1035 mount_errors(*nfs_server.hostname, 0, bg);
1038 mount_errors(*nfs_server.hostname, 1, bg);
1042 prev_bg_host = xstrdup(hostname);
1049 mount_errors(*nfs_server.hostname, 0, bg);
1053 mount_errors(*nfs_server.hostname, 1, bg);
1056 if (nfs_pmap->pm_vers == 2) {
1057 if (mntres.nfsv2.fhs_status != 0) {
1059 _("mount: %s:%s failed, reason given by server: %s\n"),
1061 nfs_strerror(mntres.nfsv2.fhs_status));
1064 memcpy(data.root.data,
1065 (char *) mntres.nfsv2.fhstatus_u.fhs_fhandle,
1067 #if NFS_MOUNT_VERSION >= 4
1068 data.root.size = NFS_FHSIZE;
1069 memcpy(data.old_root.data,
1070 (char *) mntres.nfsv2.fhstatus_u.fhs_fhandle,
1074 #if NFS_MOUNT_VERSION >= 4
1075 mountres3_ok *mountres;
1077 int i, *flavor, yum = 0;
1078 if (mntres.nfsv3.fhs_status != 0) {
1080 _("mount: %s:%s failed, reason given by server: %s\n"),
1082 nfs_strerror(mntres.nfsv3.fhs_status));
1085 #if NFS_MOUNT_VERSION >= 5
1086 mountres = &mntres.nfsv3.mountres3_u.mountinfo;
1087 i = mountres->auth_flavors.auth_flavors_len;
1089 goto noauth_flavors;
1091 flavor = mountres->auth_flavors.auth_flavors_val;
1093 if (flavor[i] == data.pseudoflavor)
1095 #ifdef NFS_MOUNT_DEBUG
1096 printf("auth flavor %d: %d\n",
1102 "mount: %s:%s failed, "
1103 "security flavor not supported\n",
1105 /* server has registered us in mtab, send umount */
1106 nfs_call_umount(&mnt_server, &dirname);
1111 fhandle = &mntres.nfsv3.mountres3_u.mountinfo.fhandle;
1112 memset(data.old_root.data, 0, NFS_FHSIZE);
1113 memset(&data.root, 0, sizeof(data.root));
1114 data.root.size = fhandle->fhandle3_len;
1115 memcpy(data.root.data,
1116 (char *) fhandle->fhandle3_val,
1117 fhandle->fhandle3_len);
1119 data.flags |= NFS_MOUNT_VER3;
1123 /* create nfs socket for kernel */
1125 if (nfs_pmap->pm_prot == IPPROTO_TCP)
1126 fsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
1128 fsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
1130 perror(_("nfs socket"));
1133 if (bindresvport(fsock, 0) < 0) {
1134 perror(_("nfs bindresvport"));
1137 #ifdef NFS_MOUNT_DEBUG
1138 printf(_("using port %d for nfs deamon\n"), nfs_pmap->pm_port);
1140 nfs_saddr->sin_port = htons(nfs_pmap->pm_port);
1142 * connect() the socket for kernels 1.3.10 and below only,
1143 * to avoid problems with multihomed hosts.
1146 if (linux_version_code() <= 66314
1147 && connect(fsock, (struct sockaddr *) nfs_saddr,
1148 sizeof (*nfs_saddr)) < 0) {
1149 perror(_("nfs connect"));
1153 #if NFS_MOUNT_VERSION >= 2
1154 if (nfs_pmap->pm_prot == IPPROTO_TCP)
1155 data.flags |= NFS_MOUNT_TCP;
1157 data.flags &= ~NFS_MOUNT_TCP;
1160 /* prepare data structure for kernel */
1163 memcpy((char *) &data.addr, (char *) nfs_saddr, sizeof(data.addr));
1164 strncpy(data.hostname, hostname, sizeof(data.hostname));
1167 /* Ensure we have enough padding for the following strcat()s */
1168 if (strlen(new_opts) + strlen(s) + 30 >= sizeof(new_opts)) {
1169 fprintf(stderr, _("mount: "
1170 "excessively long option argument\n"));
1174 snprintf(cbuf, sizeof(cbuf)-1, "addr=%s", s);
1175 strcat(new_opts, cbuf);
1177 *extra_opts = xstrdup(new_opts);
1188 * We need to translate between nfs status return values and
1189 * the local errno values which may not be the same.
1191 * Andreas Schwab <schwab@LS5.informatik.uni-dortmund.de>: change errno:
1192 * "after #include <errno.h> the symbol errno is reserved for any use,
1193 * it cannot even be used as a struct tag or field name".
1197 #define EDQUOT ENOSPC
1205 { NFSERR_PERM, EPERM },
1206 { NFSERR_NOENT, ENOENT },
1208 { NFSERR_NXIO, ENXIO },
1209 { NFSERR_ACCES, EACCES },
1210 { NFSERR_EXIST, EEXIST },
1211 { NFSERR_NODEV, ENODEV },
1212 { NFSERR_NOTDIR, ENOTDIR },
1213 { NFSERR_ISDIR, EISDIR },
1215 { NFSERR_INVAL, EINVAL }, /* that Sun forgot */
1217 { NFSERR_FBIG, EFBIG },
1218 { NFSERR_NOSPC, ENOSPC },
1219 { NFSERR_ROFS, EROFS },
1220 { NFSERR_NAMETOOLONG, ENAMETOOLONG },
1221 { NFSERR_NOTEMPTY, ENOTEMPTY },
1222 { NFSERR_DQUOT, EDQUOT },
1223 { NFSERR_STALE, ESTALE },
1225 { NFSERR_WFLUSH, EWFLUSH },
1227 /* Throw in some NFSv3 values for even more fun (HP returns these) */
1233 static char *nfs_strerror(int stat)
1236 static char buf[256];
1238 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
1239 if (nfs_errtbl[i].stat == stat)
1240 return strerror(nfs_errtbl[i].errnum);
1242 sprintf(buf, _("unknown nfs status return value: %d"), stat);