1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002 Cluster File Systems, Inc.
5 * Author: Robert Read <rread@clusterfs.com>
6 * Author: Nathan Rutman <nathan@clusterfs.com>
8 * This file is part of Lustre, http://www.lustre.org.
10 * Lustre is free software; you can redistribute it and/or
11 * modify it under the terms of version 2 of the GNU General Public
12 * License as published by the Free Software Foundation.
14 * Lustre is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with Lustre; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
33 #include <sys/mount.h>
36 #include <sys/utsname.h>
44 static char *progname = NULL;
48 fprintf(out, "%s v1.%d\n", progname, LMD_MAGIC & 0xFF);
49 fprintf(out, "usage: %s <mgmtnid>[:<altmgtnid>...]:/<filesystem>[/<cfgname>] <mountpt> "
50 "[-fhnv] [-o mntopt]\n", progname);
51 fprintf(out, "\t<mdsnode>: nid of MDS (config) node\n"
52 "\t<filesystem>: name of the Lustre filesystem (e.g. lustre1)\n"
53 "\t<cfgname>: name of client config (e.g. client)\n"
54 "\t<mountpt>: filesystem mountpoint (e.g. /mnt/lustre)\n"
55 "\t-f|--fake: fake mount (updates /etc/mtab)\n"
56 "\t--force: force mount even if already in /etc/mtab\n"
57 "\t-h|--help: print this usage message\n"
58 "\t-n|--nomtab: do not update /etc/mtab after mount\n"
59 "\t-v|--verbose: print verbose config settings\n");
60 exit((out != stdout) ? EINVAL : 0);
63 static int check_mtab_entry(char *spec, char *mtpt, char *type)
71 fp = setmntent(MOUNTED, "r");
75 while ((mnt = getmntent(fp)) != NULL) {
76 if (strcmp(mnt->mnt_fsname, spec) == 0 &&
77 strcmp(mnt->mnt_dir, mtpt) == 0 &&
78 strcmp(mnt->mnt_type, type) == 0) {
79 fprintf(stderr, "%s: according to %s %s is "
80 "already mounted on %s\n",
81 progname, MOUNTED, spec, mtpt);
82 return(1); /* or should we return an error? */
91 update_mtab_entry(char *spec, char *mtpt, char *type, char *opts,
92 int flags, int freq, int pass)
98 mnt.mnt_fsname = spec;
101 mnt.mnt_opts = opts ? opts : "";
103 mnt.mnt_passno = pass;
105 fp = setmntent(MOUNTED, "a+");
107 fprintf(stderr, "%s: setmntent(%s): %s:",
108 progname, MOUNTED, strerror (errno));
111 if ((addmntent(fp, &mnt)) == 1) {
112 fprintf(stderr, "%s: addmntent: %s:",
113 progname, strerror (errno));
122 /* Get rid of symbolic hostnames for tcp */
123 #define MAXNIDSTR 1024
124 static char *convert_hostnames(char *s1)
126 char *converted, *s2, *c;
127 int left = MAXNIDSTR;
130 converted = malloc(left);
132 while ((left > 0) && ((s2 = strsep(&s1, ",:")))) {
133 nid = libcfs_str2nid(s2);
134 if (nid == LNET_NID_ANY) {
138 fprintf(stderr, "%s: Can't parse NID '%s'\n",
143 if (LNET_NETTYP(LNET_NIDNET(nid)) == SOCKLND) {
144 __u32 addr = LNET_NIDADDR(nid);
145 c += snprintf(c, left, "%u.%u.%u.%u@%s%u:",
146 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
147 (addr >> 8) & 0xff, addr & 0xff,
148 libcfs_lnd2str(SOCKLND),
149 LNET_NETNUM(LNET_NIDNET(nid)));
151 c += snprintf(converted, left, "%s:", s2);
153 left = converted + MAXNIDSTR - c;
155 snprintf(c, left, "%s", s2);
159 /*****************************************************************************
161 * This part was cribbed from util-linux/mount/mount.c. There was no clear
162 * license information, but many other files in the package are identified as
163 * GNU GPL, so it's a pretty safe bet that was their intent.
165 ****************************************************************************/
167 const char *opt; /* option name */
168 int skip; /* skip in mtab option string */
169 int inv; /* true if flag value should be inverted */
170 int mask; /* flag mask value */
173 /* These flags are parsed by mount, not lustre */
174 static const struct opt_map opt_map[] = {
175 { "defaults", 0, 0, 0 }, /* default options */
176 { "rw", 1, 1, MS_RDONLY }, /* read-write */
177 { "ro", 0, 0, MS_RDONLY }, /* read-only */
178 { "exec", 0, 1, MS_NOEXEC }, /* permit execution of binaries */
179 { "noexec", 0, 0, MS_NOEXEC }, /* don't execute binaries */
180 { "suid", 0, 1, MS_NOSUID }, /* honor suid executables */
181 { "nosuid", 0, 0, MS_NOSUID }, /* don't honor suid executables */
182 { "dev", 0, 1, MS_NODEV }, /* interpret device files */
183 { "nodev", 0, 0, MS_NODEV }, /* don't interpret devices */
184 { "async", 0, 1, MS_SYNCHRONOUS}, /* asynchronous I/O */
185 { "auto", 0, 0, 0 }, /* Can be mounted using -a */
186 { "noauto", 0, 0, 0 }, /* Can only be mounted explicitly */
187 { "nousers", 0, 1, 0 }, /* Forbid ordinary user to mount */
188 { "nouser", 0, 1, 0 }, /* Forbid ordinary user to mount */
189 { "noowner", 0, 1, 0 }, /* Device owner has no special privs */
190 { "_netdev", 0, 0, 0 }, /* Device accessible only via network */
191 { "flock", 0, 0, 0 }, /* Enable flock support */
192 { "noflock", 1, 1, 0 }, /* Disable flock support */
193 { "user_xattr", 0, 0, 0 }, /* Enable get/set user xattr */
194 { "nouser_xattr", 1, 1, 0 }, /* Disable user xattr */
197 /****************************************************************************/
199 static int parse_one_option(const char *check, int *flagp)
201 const struct opt_map *opt;
203 for (opt = &opt_map[0]; opt->opt != NULL; opt++) {
204 if (strncmp(check, opt->opt, strlen(opt->opt)) == 0) {
208 *flagp &= ~(opt->mask);
214 fprintf(stderr, "%s: unknown option '%s', continuing\n", progname,
219 int parse_options(char *orig_options, int *flagp)
222 char *options, *opt, *nextopt;
224 options = calloc(strlen(orig_options) + 1, 1);
227 nextopt = orig_options;
228 while ((opt = strsep(&nextopt, ","))) {
229 if (parse_one_option(opt, flagp) > 0)
231 /* no mount flags set, so pass this on as an option */
233 strcat(options, ",");
234 strcat(options, opt);
236 strcpy(orig_options, options);
242 int main(int argc, char *const argv[])
244 char *source, *target, *options = "", *optcopy;
245 int i, nargs = 3, opt, rc, flags, optlen;
246 static struct option long_opt[] = {
250 {"nomtab", 0, 0, 'n'},
251 {"options", 1, 0, 'o'},
252 {"verbose", 0, 0, 'v'},
256 progname = strrchr(argv[0], '/');
257 progname = progname ? progname + 1 : argv[0];
259 while ((opt = getopt_long(argc, argv, "fhno:v",
260 long_opt, NULL)) != EOF){
264 printf("force: %d\n", force);
269 printf("fake: %d\n", fake);
277 printf("nomtab: %d\n", nomtab);
286 printf("verbose: %d\n", verbose);
290 fprintf(stderr, "%s: unknown option '%c'\n",
297 if (optind + 2 > argc) {
298 fprintf(stderr, "%s: too few arguments\n", progname);
302 source = convert_hostnames(argv[optind]);
303 target = argv[optind + 1];
310 for (i = 0; i < argc; i++)
311 printf("arg[%d] = %s\n", i, argv[i]);
312 printf("source = %s, target = %s\n", source, target);
315 if (!force && check_mtab_entry(source, target, "lustre"))
318 rc = parse_options(options, &flags);
320 fprintf(stderr, "%s: can't parse options: %s\n",
325 rc = access(target, F_OK);
328 fprintf(stderr, "%s: %s inaccessible: %s\n", progname, target,
333 /* In Linux 2.4, the target device doesn't get passed to any of our
334 functions. So we'll stick it on the end of the options. */
335 optlen = strlen(options) + strlen(",device=") + strlen(source);
336 optcopy = malloc(optlen);
337 strcpy(optcopy, options);
339 strcat(optcopy, ",");
340 strcat(optcopy, "device=");
341 strcat(optcopy, source);
344 printf("mounting devce %s at %s, flags=%#x options=%s\n",
345 source, target, flags, optcopy);
348 /* flags and target get to lustre_get_sb, but not
349 lustre_fill_super. Lustre ignores the flags, but mount
351 rc = mount(source, target, "lustre", flags, (void *)optcopy);
354 fprintf(stderr, "%s: mount(%s, %s) failed: %s\n", progname,
355 source, target, strerror(errno));
357 fprintf(stderr, "Are the lustre modules loaded?\n"
358 "Check /etc/modules.conf and /proc/filesystems\n");
360 } else if (!nomtab) {
361 rc = update_mtab_entry(source, target, "lustre", options,0,0,0);