--- /dev/null
+/*
+ * mount(8) -- mount a filesystem
+ *
+ * Copyright (C) 2011 Red Hat, Inc. All rights reserved.
+ * Written by Karel Zak <kzak@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it would 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 this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <getopt.h>
+#include <err.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+#include "mount.h"
+#include "nls.h"
+#include "c.h"
+
+/*** TODO: DOCS:
+ *
+ * -p, --pass-fd is unsupported
+ * --guess-fstype is unsupported
+ * -c = --no-canonicalize
+ */
+
+/* exit status */
+#define EX_SUCCESS 0
+#define EX_USAGE 1 /* incorrect invocation or permission */
+#define EX_SYSERR 2 /* out of memory, cannot fork, ... */
+#define EX_SOFTWARE 4 /* internal mount bug or wrong version */
+#define EX_USER 8 /* user interrupt */
+#define EX_FILEIO 16 /* problems writing, locking, ... mtab/fstab */
+#define EX_FAIL 32 /* mount failure */
+#define EX_SOMEOK 64 /* some mount succeeded */
+
+static mnt_lock *lock;
+
+static void lock_atexit_cleanup(void)
+{
+ if (lock)
+ mnt_unlock_file(lock);
+}
+
+static void __attribute__((__noreturn__)) exit_non_root(const char *option)
+{
+ const uid_t ruid = getuid();
+ const uid_t euid = geteuid();
+
+ if (ruid == 0 && euid != 0) {
+ /* user is root, but setuid to non-root */
+ if (option)
+ errx(EX_USAGE, _("only root can use \"--%s\" option "
+ "(effective UID is %u)"),
+ option, euid);
+ errx(EX_USAGE, _("only root can do that "
+ "(effective UID is %u)"), euid);
+ }
+ if (option)
+ errx(EX_USAGE, _("only root can use \"--%s\" option"), option);
+ errx(EX_USAGE, _("only root can do that"));
+}
+
+static void __attribute__((__noreturn__)) print_version(void)
+{
+ const char *ver = NULL;
+
+ mnt_get_library_version(&ver);
+
+ printf("%s from %s (libmount %s)\n",
+ program_invocation_short_name, PACKAGE_STRING, ver);
+ exit(EX_SUCCESS);
+}
+
+static const char *opt_to_longopt(int c, const struct option *opts)
+{
+ const struct option *o;
+
+ for (o = opts; o->name; o++)
+ if (o->val == c)
+ return o->name;
+ return NULL;
+}
+
+static int print_all(mnt_context *cxt, char *pattern, int show_label)
+{
+ int rc = 0;
+ mnt_tab *tb;
+ mnt_iter *itr;
+ mnt_fs *fs;
+ mnt_cache *cache = NULL;
+
+ rc = mnt_context_get_mtab(cxt, &tb);
+ if (rc)
+ goto done;
+
+ itr = mnt_new_iter(MNT_ITER_FORWARD);
+ if (!itr)
+ goto done;
+
+ if (show_label)
+ cache = mnt_new_cache();
+
+ while(mnt_tab_next_fs(tb, itr, &fs) == 0) {
+ const char *type = mnt_fs_get_fstype(fs);
+ const char *src = mnt_fs_get_source(fs);
+ char *optstr = mnt_fs_strdup_options(fs);
+
+ if (type && pattern && !mnt_match_fstype(type, pattern))
+ continue;
+
+ /* TODO: print loop backing file instead of device name */
+
+ printf ("%s on %s", src ? : "none", mnt_fs_get_target(fs));
+ if (type)
+ printf (" type %s", type);
+ if (optstr)
+ printf (" (%s)", optstr);
+ if (show_label && src) {
+ char *lb = mnt_cache_find_tag_value(cache, src, "LABEL");
+ if (lb)
+ printf (" [%s]", lb);
+ }
+ fputc('\n', stdout);
+ }
+done:
+ mnt_free_cache(cache);
+ return rc;
+}
+
+static void __attribute__((__noreturn__)) usage(FILE *out)
+{
+ fprintf(out, _("Usage:\n"
+ " %1$s [-lhV]\n"
+ " %1$s -a [options]\n"
+ " %1$s [options] <source> | <directory>\n"
+ " %1$s [options] <source> <directory>\n"
+ " %1$s <operation> <mountpoint> [<target>]\n"),
+ program_invocation_short_name);
+
+ fprintf(out, _(
+ "\nOptions:\n"
+ " -a, --all mount all filesystems mentioned in fstab\n"
+ " -f, --fake dry run, skip mount(2) syscall\n"
+ " -F, --fork fork off for each device (use with -a)\n"
+ " -h, --help this help\n"
+ " -n, --no-mtab don't write to /etc/mtab\n"
+ " -r, --read-only mount the filesystem read-only (same as -o ro)\n"
+ " -v, --verbose verbose mode\n"
+ " -V, --version print version string\n"
+ " -w, --read-write mount the filesystem read-write (default)\n"
+ " -o, --options <list> comma separated string of mount options\n"
+ " -O, --test-opts <list> limit the set of filesystems (use with -a)\n"
+ " -t, --types <list> indicate the filesystem type\n"
+ " -c, --no-canonicalize don't canonicalize paths\n"
+ " -i, --internal-only don't call the mount.<type> helpers\n"
+ " -l, --show-labels lists all mounts with LABELs\n"
+
+ "\nSource:\n"
+ " -L, --label <label> synonym for LABEL=<label>\n"
+ " -U, --uuid <uuid> synonym for UUID=<uuid>\n"
+ " LABEL=<label> specifies device by filesystem label\n"
+ " UUID=<uuid> specifies device by filesystem UUID\n"
+ " <device> specifies device by path\n"
+ " <directory> mountpoint for bind mounts (see --bind/rbind)\n"
+ " <file> regular file for loopdev setup\n"
+
+ "\nOperations:\n"
+ " -B, --bind mount a subtree somewhere else (same as -o bind)\n"
+ " -M, --move move a subtree to some other place\n"
+ " -R, --rbind mount a subtree and all submounts somewhere else\n"
+ " --make-shared mark a subtree as shared\n"
+ " --make-slave mark a subtree as slave\n"
+ " --make-private mark a subtree as private\n"
+ " --make-unbindable mark a subtree as unbindable\n"
+ " --make-rshared recursively mark a whole subtree as shared\n"
+ " --make-rslave recursively mark a whole subtree as slave\n"
+ " --make-rprivate recursively mark a whole subtree as private\n"
+ " --make-runbindable recursively mark a whole subtree as unbindable\n"
+ ));
+
+ fprintf(out, _("\nFor more information see mount(8).\n"));
+
+ exit(out == stderr ? EX_USAGE : EX_SUCCESS);
+}
+
+int main(int argc, char **argv)
+{
+ int c, rc = EXIT_FAILURE, all = 0, show_labels = 0;
+ mnt_context *cxt;
+ char *source = NULL, *srcbuf = NULL;
+ char *types = NULL;
+ unsigned long oper = 0;
+
+ struct option longopts[] = {
+ { "all", 0, 0, 'a' },
+ { "fake", 0, 0, 'f' },
+ { "fork", 0, 0, 'F' },
+ { "help", 0, 0, 'h' },
+ { "no-mtab", 0, 0, 'n' },
+ { "read-only", 0, 0, 'r' },
+ { "ro", 0, 0, 'r' },
+ { "verbose", 0, 0, 'v' },
+ { "version", 0, 0, 'V' },
+ { "read-write", 0, 0, 'w' },
+ { "rw", 0, 0, 'w' },
+ { "options", 1, 0, 'o' },
+ { "test-opts", 1, 0, 'O' },
+ { "types", 1, 0, 't' },
+ { "uuid", 1, 0, 'U' },
+ { "label", 1, 0, 'L'},
+ { "bind", 0, 0, 'B' },
+ { "move", 0, 0, 'M' },
+ { "rbind", 0, 0, 'R' },
+ { "make-shared", 0, 0, 136 },
+ { "make-slave", 0, 0, 137 },
+ { "make-private", 0, 0, 138 },
+ { "make-unbindable", 0, 0, 139 },
+ { "make-rshared", 0, 0, 140 },
+ { "make-rslave", 0, 0, 141 },
+ { "make-rprivate", 0, 0, 142 },
+ { "make-runbindable", 0, 0, 143 },
+ { "no-canonicalize", 0, 0, 'c' },
+ { "internal-only", 0, 0, 'i' },
+ { "show-labels", 0, 0, 'l' },
+ { NULL, 0, 0, 0 }
+ };
+
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+
+ mnt_init_debug(0);
+ cxt = mnt_new_context();
+ if (!cxt)
+ err(EX_SYSERR, _("libmount context allocation failed"));
+
+ while ((c = getopt_long(argc, argv, "aBcfFhilL:Mno:O:rRsU:vVwt:",
+ longopts, NULL)) != -1) {
+
+ /* only few options are allowed for non-root users */
+ if (mnt_context_is_restricted(cxt) && !strchr("hlLUVv", c))
+ exit_non_root(opt_to_longopt(c, longopts));
+
+ switch(c) {
+ case 'a':
+ all = 1;
+ err(EX_FAIL, "-a not implemented yet"); /* TODO */
+ break;
+ case 'c':
+ mnt_context_disable_canonicalize(cxt, TRUE);
+ break;
+ case 'f':
+ mnt_context_enable_fake(cxt, TRUE);
+ break;
+ case 'F':
+ err(EX_FAIL, "-F not implemented yet"); /* TODO */
+ break;
+ case 'h':
+ usage(stdout);
+ break;
+ case 'i':
+ mnt_context_disable_helpers(cxt, TRUE);
+ break;
+ case 'n':
+ mnt_context_disable_mtab(cxt, TRUE);
+ break;
+ case 'r':
+ if (mnt_context_append_options(cxt, "ro"))
+ err(EX_SYSERR, _("failed to append options"));
+ break;
+ case 'v':
+ mnt_context_enable_verbose(cxt, TRUE);
+ break;
+ case 'V':
+ print_version();
+ break;
+ case 'w':
+ if (mnt_context_append_options(cxt, "rw"))
+ err(EX_SYSERR, _("failed to append options"));
+ break;
+ case 'o':
+ if (mnt_context_append_options(cxt, optarg))
+ err(EX_SYSERR, _("failed to append options"));
+ break;
+ case 'O':
+ if (mnt_context_set_options_pattern(cxt, optarg))
+ err(EX_SYSERR, _("failed to set options pattern"));
+ break;
+ case 'L':
+ case 'U':
+ if (source)
+ errx(EX_USAGE, _("only one <source> could be specified"));
+ if (asprintf(&srcbuf, "%s=\"%s\"",
+ c == 'L' ? "LABEL" : "UUID", optarg) <= 0)
+ err(EX_SYSERR, _("failed to allocate source buffer"));
+ source = srcbuf;
+ break;
+ case 'l':
+ show_labels = 1;
+ break;
+ case 't':
+ types = optarg;
+ break;
+ case 's':
+ mnt_context_enable_sloppy(cxt, TRUE);
+ break;
+ case 'B':
+ oper = MS_BIND;
+ break;
+ case 'M':
+ oper = MS_MOVE;
+ break;
+ case 'R':
+ oper = (MS_BIND | MS_REC);
+ break;
+ case 136:
+ oper = MS_SHARED;
+ break;
+ case 137:
+ oper = MS_SLAVE;
+ break;
+ case 138:
+ oper = MS_PRIVATE;
+ break;
+ case 139:
+ oper = MS_UNBINDABLE;
+ break;
+ case 140:
+ oper = (MS_SHARED | MS_REC);
+ break;
+ case 141:
+ oper = (MS_SLAVE | MS_REC);
+ break;
+ case 142:
+ oper = (MS_PRIVATE | MS_REC);
+ break;
+ case 143:
+ oper = (MS_UNBINDABLE | MS_REC);
+ break;
+ default:
+ usage(stderr);
+ break;
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ if (!source && !argc && !all) {
+ if (oper)
+ usage(stderr);
+ if (!print_all(cxt, types, show_labels))
+ rc = EX_SUCCESS;
+ goto done;
+ }
+
+ if (oper && (types || all || source))
+ usage(stderr);
+
+ if (types && (strchr(types, ',') || strncmp(types, "no", 2) == 0))
+ mnt_context_set_fstype_pattern(cxt, types);
+ else if (types)
+ mnt_context_set_fstype(cxt, types);
+
+ if (argc == 0 && source) {
+ /* mount -L|-U */
+ mnt_context_set_source(cxt, source);
+
+ } else if (argc == 1) {
+ /* mount [-L|-U] <target>
+ * mount <source|target> */
+ if (source) {
+ if (mnt_context_is_restricted(cxt))
+ exit_non_root(NULL);
+ mnt_context_set_source(cxt, source);
+ }
+ mnt_context_set_target(cxt, argv[0]);
+
+ } else if (argc == 2 && !source) {
+ /* mount <source> <target> */
+ if (mnt_context_is_restricted(cxt))
+ exit_non_root(NULL);
+ mnt_context_set_source(cxt, argv[0]);
+ mnt_context_set_target(cxt, argv[1]);
+ } else
+ usage(stderr);
+
+ if (oper)
+ mnt_context_set_mountflags(cxt, oper);
+
+ lock = mnt_context_get_lock(cxt);
+ if (lock)
+ atexit(lock_atexit_cleanup);
+
+ rc = mnt_context_do_mount(cxt);
+ if (rc) {
+ /* TODO: call mnt_context_strerror() */
+ rc = EX_FAIL;
+ } else
+ rc = EX_SUCCESS;
+done:
+ free(srcbuf);
+ mnt_free_context(cxt);
+ return rc;
+}
+
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