+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2002 Cluster File Systems, Inc.
- * Author: Robert Read <rread@clusterfs.com>
- *
- * This file is part of Lustre, http://www.lustre.org.
- *
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-
-#define _GNU_SOURCE
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-#include <sys/mount.h>
-#include <mntent.h>
-#include <getopt.h>
-#include <sys/utsname.h>
-
-#include "obdctl.h"
-#include <lnet/lnetctl.h>
-
-int verbose;
-int nomtab;
-int fake;
-int force;
-int retry;
-static char *progname = NULL;
-#define MAX_RETRIES 99
-
-void usage(FILE *out)
-{
- fprintf(out, "%s v1.%d\n", progname, LMD_MAGIC & 0xFF);
- fprintf(out, "usage: %s <mdsnode>[,<altmdsnode>]:/<mdsname>/<cfgname>"
- " <mountpt> [-fhnv] [-o mntopt]\n", progname);
- fprintf(out, "\t<mdsnode>: nid of MDS (config) node\n"
- "\t<mdsname>: name of MDS service (e.g. mds1)\n"
- "\t<cfgname>: name of client config (e.g. client)\n"
- "\t<mountpt>: filesystem mountpoint (e.g. /mnt/lustre)\n"
- "\t-f|--fake: fake mount (updates /etc/mtab)\n"
- "\t--force: force mount even if already in /etc/mtab\n"
- "\t-h|--help: print this usage message\n"
- "\t-n|--nomtab: do not update /etc/mtab after mount\n"
- "\t-v|--verbose: print verbose config settings\n"
- "\t-o: filesystem mount options:\n"
- "\t\tflock/noflock: enable/disable flock support\n"
- "\t\tretry=<num>: number of times mount is retried by client\n"
- "\t\tuser_xattr/nouser_xattr: enable/disable user extended "
- "attributes\n"
- );
- exit(out != stdout);
-}
-
-static int check_mtab_entry(char *spec, char *mtpt, char *type)
-{
- FILE *fp;
- struct mntent *mnt;
-
- if (!force) {
- fp = setmntent(MOUNTED, "r");
- if (fp == NULL)
- return(0);
-
- while ((mnt = getmntent(fp)) != NULL) {
- if (strcmp(mnt->mnt_fsname, spec) == 0 &&
- strcmp(mnt->mnt_dir, mtpt) == 0 &&
- strcmp(mnt->mnt_type, type) == 0) {
- fprintf(stderr, "%s: according to %s %s is "
- "already mounted on %s\n",
- progname, MOUNTED, spec, mtpt);
- return(1); /* or should we return an error? */
- }
- }
- endmntent(fp);
- }
- return(0);
-}
-
-static int
-update_mtab_entry(char *spec, char *mtpt, char *type, char *opts,
- int flags, int freq, int pass)
-{
- FILE *fp;
- struct mntent mnt;
- int rc = 0;
-
- mnt.mnt_fsname = spec;
- mnt.mnt_dir = mtpt;
- mnt.mnt_type = type;
- mnt.mnt_opts = opts ? opts : "";
- mnt.mnt_freq = freq;
- mnt.mnt_passno = pass;
-
- fp = setmntent(MOUNTED, "a+");
- if (fp == NULL) {
- fprintf(stderr, "%s: setmntent(%s): %s:",
- progname, MOUNTED, strerror (errno));
- rc = 16;
- } else {
- if ((addmntent(fp, &mnt)) == 1) {
- fprintf(stderr, "%s: addmntent: %s:",
- progname, strerror (errno));
- rc = 16;
- } else if (verbose > 1) {
- fprintf(stderr, "%s: added %s on %s to %s\n",
- progname, spec, mtpt, MOUNTED);
- }
- endmntent(fp);
- }
-
- return rc;
-}
-
-int
-init_options(struct lustre_mount_data *lmd)
-{
- memset(lmd, 0, sizeof(*lmd));
- lmd->lmd_magic = LMD_MAGIC;
- return 0;
-}
-
-int
-print_options(FILE *out, struct lustre_mount_data *lmd, const char *options)
-{
- int i;
- for (i = 0; i < lmd->lmd_nid_count; i++) {
- fprintf(out, "mds nid %d: %s\n", i,
- libcfs_nid2str(lmd->lmd_nid[i]));
- }
- fprintf(out, "mds name: %s\n", lmd->lmd_mds);
- fprintf(out, "profile: %s\n", lmd->lmd_profile);
- fprintf(out, "options: %s\n", options);
- fprintf(out, "retry: %d\n", retry);
-
- return 0;
-}
-
-static int parse_nids(struct lustre_mount_data *lmd, char *nids)
-{
- int i = 0;
- char *tmp = 0;
- lnet_nid_t nid;
-
- while ((tmp = strsep(&nids, ",:"))) {
- nid = libcfs_str2nid(tmp);
- if (nid == LNET_NID_ANY) {
- fprintf(stderr, "%s: Can't parse NID '%s'\n",
- progname, tmp);
- continue;
- }
- lmd->lmd_nid[lmd->lmd_nid_count++] = nid;
- if (lmd->lmd_nid_count >= MAX_FAILOVER_NIDS) {
- fprintf(stderr, "%s: Too many target NIDs: "
- "ignoring nids after %s\n",
- progname, tmp);
- break;
- }
- }
- return (lmd->lmd_nid_count);
-}
-
-
-/*****************************************************************************
- *
- * This part was cribbed from util-linux/mount/mount.c. There was no clear
- * license information, but many other files in the package are identified as
- * GNU GPL, so it's a pretty safe bet that was their intent.
- *
- ****************************************************************************/
-struct opt_map {
- const char *opt; /* option name */
- int skip; /* skip in mtab option string */
- int inv; /* true if flag value should be inverted */
- int ms_mask; /* MS flag mask value */
- int lmd_mask; /* LMD flag mask value */
-};
-
-static const struct opt_map opt_map[] = {
- { "defaults", 0, 0, 0, 0 }, /* default options */
- { "rw", 1, 1, MS_RDONLY, 0 }, /* read-write */
- { "ro", 0, 0, MS_RDONLY, 0 }, /* read-only */
- { "exec", 0, 1, MS_NOEXEC, 0 }, /* permit execution of binaries */
- { "noexec", 0, 0, MS_NOEXEC, 0 }, /* don't execute binaries */
- { "suid", 0, 1, MS_NOSUID, 0 }, /* honor suid executables */
- { "nosuid", 0, 0, MS_NOSUID, 0 }, /* don't honor suid executables */
- { "dev", 0, 1, MS_NODEV, 0 }, /* interpret device files */
- { "nodev", 0, 0, MS_NODEV, 0 }, /* don't interpret devices */
- { "async", 0, 1, MS_SYNCHRONOUS, 0}, /* asynchronous I/O */
- { "auto", 0, 0, 0, 0 }, /* Can be mounted using -a */
- { "noauto", 0, 0, 0, 0 }, /* Can only be mounted explicitly */
- { "nousers", 0, 1, 0, 0 }, /* Forbid ordinary user to mount */
- { "nouser", 0, 1, 0, 0 }, /* Forbid ordinary user to mount */
- { "noowner", 0, 1, 0, 0 }, /* Device owner has no special privs */
- { "_netdev", 0, 0, 0, 0 }, /* Device accessible only via network */
- { "flock", 0, 0, 0, LMD_FLG_FLOCK}, /* Enable flock support */
- { "noflock", 1, 1, 0, LMD_FLG_FLOCK}, /* Disable flock support */
- { "user_xattr", 0, 0, 0, LMD_FLG_USER_XATTR}, /* Enable get/set user xattr */
- { "nouser_xattr", 1, 1, 0, LMD_FLG_USER_XATTR}, /* Disable user xattr */
- { "acl", 0, 0, 0, LMD_FLG_ACL}, /* Enable ACL support */
- { "noacl", 1, 1, 0, LMD_FLG_ACL}, /* Disable ACL support */
- /* please add new mount options to usage message */
- { NULL, 0, 0, 0, 0 }
-};
-/****************************************************************************/
-
-static int parse_one_option(const char *check, int *ms_flags, int *lmd_flags)
-{
- const struct opt_map *opt;
-
- for (opt = &opt_map[0]; opt->opt != NULL; opt++) {
- if (strcmp(check, opt->opt) == 0) {
- if (opt->inv) {
- *ms_flags &= ~(opt->ms_mask);
- *lmd_flags &= ~(opt->lmd_mask);
- } else {
- *ms_flags |= opt->ms_mask;
- *lmd_flags |= opt->lmd_mask;
- }
- return 1;
- }
- }
- return 0;
-}
-
-int parse_options(char *options, struct lustre_mount_data *lmd, int *flagp)
-{
- int val;
- char *opt, *opteq;
-
- *flagp = 0;
- /* parsing ideas here taken from util-linux/mount/nfsmount.c */
- for (opt = strtok(options, ","); opt; opt = strtok(NULL, ",")) {
- if ((opteq = strchr(opt, '='))) {
- val = atoi(opteq + 1);
- *opteq = '\0';
- if (!strcmp(opt, "retry")) {
- if (val > MAX_RETRIES)
- retry = MAX_RETRIES;
- else if (val >= 0)
- retry = val;
- } else {
- fprintf(stderr, "%s: unknown option '%s'. "
- "Ignoring.\n", progname, opt);
- /* Ignore old nettype= for now
- usage(stderr);
- */
- }
- } else {
- if (parse_one_option(opt, flagp, &lmd->lmd_flags))
- continue;
-
- fprintf(stderr, "%s: unknown option '%s'\n",
- progname, opt);
- usage(stderr);
- }
- }
- return 0;
-}
-
-int
-build_data(char *source, char *options, struct lustre_mount_data *lmd,
- int *flagp)
-{
- char buf[1024];
- char *nid = NULL;
- char *mds = NULL;
- char *profile = NULL;
- char *s;
- int rc;
-
- if (lmd_bad_magic(lmd))
- return 4;
-
- if (strlen(source) >= sizeof(buf)) {
- fprintf(stderr, "%s: nid:/mds/profile argument too long\n",
- progname);
- return 1;
- }
- strcpy(buf, source);
- if ((s = strchr(buf, ':'))) {
- nid = buf;
- *s = '\0';
-
- while (*++s == '/')
- ;
- mds = s;
- if ((s = strchr(mds, '/'))) {
- *s = '\0';
- profile = s + 1;
- } else {
- fprintf(stderr, "%s: directory to mount not in "
- "nid:/mds/profile format\n",
- progname);
- return(1);
- }
- } else {
- fprintf(stderr, "%s: "
- "directory to mount not in nid:/mds/profile format\n",
- progname);
- return(1);
- }
-
- rc = parse_options(options, lmd, flagp);
- if (rc)
- return rc;
-
- if (parse_nids(lmd, nid) == 0) {
- fprintf(stderr, "%s: Can't parse any mds nids\n", progname);
- return(1);
- }
-
- if (strlen(mds) + 1 > sizeof(lmd->lmd_mds)) {
- fprintf(stderr, "%s: mds name too long\n", progname);
- return(1);
- }
- strcpy(lmd->lmd_mds, mds);
-
- if (strlen(profile) + 1 > sizeof(lmd->lmd_profile)) {
- fprintf(stderr, "%s: profile name too long\n", progname);
- return(1);
- }
- strcpy(lmd->lmd_profile, profile);
-
- return 0;
-}
-
-int main(int argc, char *const argv[])
-{
- char *source, *target, *options = "", optbuf[65536] = { '\0' };
- int i, nargs = 3, opt, rc, flags, buflen = sizeof(optbuf) - 1;
- struct lustre_mount_data lmd;
- static struct option long_opt[] = {
- {"fake", 0, 0, 'f'},
- {"force", 0, 0, 1},
- {"help", 0, 0, 'h'},
- {"nomtab", 0, 0, 'n'},
- {"options", 1, 0, 'o'},
- {"verbose", 0, 0, 'v'},
- {0, 0, 0, 0}
- };
-
- progname = strrchr(argv[0], '/');
- progname = progname ? progname + 1 : argv[0];
-
- while ((opt = getopt_long(argc, argv, "fhno:v", long_opt,NULL)) != EOF){
- switch (opt) {
- case 1:
- ++force;
- if (verbose)
- printf("force: %d\n", force);
- nargs++;
- break;
- case 'f':
- ++fake;
- if (verbose)
- printf("fake: %d\n", fake);
- nargs++;
- break;
- case 'h':
- usage(stdout);
- break;
- case 'n':
- ++nomtab;
- if (verbose)
- printf("nomtab: %d\n", nomtab);
- nargs++;
- break;
- case 'o':
- options = optarg;
- nargs++;
- break;
- case 'v':
- ++verbose;
- printf("verbose: %d\n", verbose);
- nargs++;
- break;
- default:
- fprintf(stderr, "%s: unknown option '%c'\n",
- progname, opt);
- usage(stderr);
- break;
- }
- }
-
- if (optind + 2 > argc) {
- fprintf(stderr, "%s: too few arguments\n", progname);
- usage(stderr);
- }
-
- source = argv[optind];
- target = argv[optind + 1];
-
- if (verbose) {
- for (i = 0; i < argc; i++)
- printf("arg[%d] = %s\n", i, argv[i]);
- printf("source = %s, target = %s\n", source, target);
- }
-
- if (!force && check_mtab_entry(source, target, "lustre"))
- exit(32);
-
- init_options(&lmd);
-
- /* need to copy options, as parse_options->strtok() clobbers it
- * and we can't use it later to put in /etc/mtab. */
- if (strlen(options) > buflen)
- fprintf(stderr, "%s: options too long (%d > %d), ignore last\n",
- progname, strlen(options), buflen);
- strncpy(optbuf, options, buflen);
-
- rc = build_data(source, optbuf, &lmd, &flags);
- if (rc) {
- exit(1);
- }
-
- if (verbose)
- print_options(stdout, &lmd, options);
-
- rc = access(target, F_OK);
- if (rc) {
- rc = errno;
- fprintf(stderr, "%s: %s inaccessible: %s\n", progname, target,
- strerror(errno));
- return 1;
- }
-
- if (!fake) {
- FILE *modpipe = popen("/sbin/modprobe -q llite", "r");
- if (modpipe != NULL)
- pclose(modpipe);
- /* use <= to include the initial mount before we retry */
- for (i = 0, rc = -EAGAIN; i <= retry && rc != 0; i++) {
- rc = mount(source, target, "lustre", flags, &lmd);
- if (rc && retry)
- sleep(1 << max((i/2), 5));
- }
- }
- if (rc) {
- fprintf(stderr, "%s: mount(%s, %s) failed: %s\n", progname,
- source, target, strerror(errno));
- print_options(stderr, &lmd, options);
- if (errno == ENODEV) {
- struct utsname unamebuf;
- char *modfile = "/etc/modutils.conf";
-
- if (uname(&unamebuf) == 0 &&
- strncmp(unamebuf.release, "2.4", 3) == 0)
- modfile = "/etc/modules.conf";
-
- fprintf(stderr, "Are the lustre modules loaded?\n"
- "Check %s and /proc/filesystems\n");
- }
- rc = 32;
- } else if (!nomtab) {
- rc = update_mtab_entry(source, target, "lustre", options,0,0,0);
- }
- return rc;
-}
git://git.whamcloud.com / fs / lustre-release.git / commitdiff