[thirdparty/util-linux.git] / libmount / samples / mount.c

/*
 * 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 <unistd.h>
#include <sys/types.h>

#include <libmount.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 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 int table_parser_errcb(struct libmnt_table *tb __attribute__((__unused__)),
			const char *filename, int line)
{
	if (filename)
		warnx(_("%s: parse error: ignore entry at line %d."),
							filename, line);
	return 0;
}

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 void print_all(struct libmnt_context *cxt, char *pattern, int show_label)
{
	struct libmnt_table *tb;
	struct libmnt_iter *itr = NULL;
	struct libmnt_fs *fs;
	struct libmnt_cache *cache = NULL;

	if (mnt_context_get_mtab(cxt, &tb))
		err(EX_SYSERR, _("failed to read mtab"));

	itr = mnt_new_iter(MNT_ITER_FORWARD);
	if (!itr)
		err(EX_SYSERR, _("failed to initialize libmount iterator"));
	if (show_label)
		cache = mnt_new_cache();

	while (mnt_table_next_fs(tb, itr, &fs) == 0) {
		const char *type = mnt_fs_get_fstype(fs);
		const char *src = mnt_fs_get_source(fs);
		const char *optstr = mnt_fs_get_options(fs);
		char *xsrc;

		if (type && pattern && !mnt_match_fstype(type, pattern))
			continue;

		xsrc = mnt_pretty_path(src, cache);
		printf ("%s on %s", xsrc, 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);
		free(xsrc);
	}

	mnt_free_cache(cache);
	mnt_free_iter(itr);
}

/*
 * mount -a [-F]
 * ... -F is not supported yet (TODO)
 */
static int mount_all(struct libmnt_context *cxt,
		     int forkme __attribute__((unused)))
{
	struct libmnt_iter *itr;
	struct libmnt_fs *fs;
	int mntrc, ignored, rc = EX_SUCCESS;

	itr = mnt_new_iter(MNT_ITER_FORWARD);
	if (!itr) {
		warn(_("failed to initialize libmount iterator"));
		return EX_SYSERR;
	}

	while (mnt_context_next_mount(cxt, itr, &fs, &mntrc, &ignored) == 0) {

		const char *tgt = mnt_fs_get_target(fs);

		if (ignored) {
			if (mnt_context_is_verbose(cxt))
				printf(ignored == 1 ? _("%-20s: ignored\n") :
						      _("%-20s: already mounted\n"),
						tgt);
		} else if (!mnt_context_get_status(cxt)) {
			if (mntrc > 0) {
				errno = mntrc;
				printf(_("%-20s: failed: %s\n"), tgt,
						strerror(mntrc));
				rc |= EX_FAIL;
			} else {
				printf(_("%-20s: failed\n"), tgt);
				rc |= EX_SYSERR;
			}
		} else {
			if (mnt_context_is_verbose(cxt))
				printf("%-20s: successfully mounted\n", tgt);

			rc |= EX_SOMEOK;
		}
	}

	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"
	" -c, --no-canonicalize   don't canonicalize paths\n"
	" -f, --fake              dry run; skip the mount(2) syscall\n"
	" -F, --fork              fork off for each device (use with -a)\n"));
	fprintf(out, _(
	" -h, --help              display this help text and exit\n"
	" -i, --internal-only     don't call the mount.<type> helpers\n"
	" -l, --show-labels       lists all mounts with LABELs\n"
	" -n, --no-mtab           don't write to /etc/mtab\n"));
	fprintf(out, _(
	" -o, --options <list>    comma-separated list of mount options\n"
	" -O, --test-opts <list>  limit the set of filesystems (use with -a)\n"
	" -r, --read-only         mount the filesystem read-only (same as -o ro)\n"
	" -t, --types <list>      limit the set of filesystem types\n"));
	fprintf(out, _(
	" -v, --verbose           say what is being done\n"
	" -V, --version           display version information and exit\n"
	" -w, --read-write        mount the filesystem read-write (default)\n"));

	fprintf(out, _(
	"\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"));
	fprintf(out, _(
	" <device>                specifies device by path\n"
	" <directory>             mountpoint for bind mounts (see --bind/rbind)\n"
	" <file>                  regular file for loopdev setup\n"));

	fprintf(out, _(
	"\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"));
	fprintf(out, _(
	" --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"));
	fprintf(out, _(
	" --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 = EX_SUCCESS, all = 0, forkme = 0, show_labels = 0;
	struct libmnt_context *cxt;
	char *source = NULL, *srcbuf = NULL;
	char *types = NULL;
	unsigned long oper = 0;

	static const 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"));

	mnt_context_set_tables_errcb(cxt, table_parser_errcb);

	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;
			break;
		case 'c':
			mnt_context_disable_canonicalize(cxt, TRUE);
			break;
		case 'f':
			mnt_context_enable_fake(cxt, TRUE);
			break;
		case 'F':
			forkme = 1;
			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> may 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);
		print_all(cxt, types, show_labels);
		goto done;
	}

	if (oper && (types || all || source))
		usage(stderr);

	if (types && (all || strchr(types, ',') ||
			     strncmp(types, "no", 2) == 0))
		mnt_context_set_fstype_pattern(cxt, types);
	else if (types)
		mnt_context_set_fstype(cxt, types);

	if (all) {
		/*
		 * A) Mount all
		 */
		rc = mount_all(cxt, forkme);
		goto done;

	} else if (argc == 0 && source) {
		/*
		 * B) mount -L|-U
		 */
		mnt_context_set_source(cxt, source);

	} else if (argc == 1) {
		/*
		 * C) 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) {
		/*
		 * D) 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_mflags(cxt, oper);

	rc = mnt_context_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;
}
Commit	Line	Data
97073441 KZ	1	/*
	2	* mount(8) -- mount a filesystem
	3	*
	4	* Copyright (C) 2011 Red Hat, Inc. All rights reserved.
	5	* Written by Karel Zak <kzak@redhat.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it would be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software Foundation,
	19	* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*/
	21
	22	#include <stdio.h>
	23	#include <stdlib.h>
	24	#include <errno.h>
	25	#include <string.h>
	26	#include <getopt.h>
97073441 KZ	27	#include <unistd.h>
	28	#include <sys/types.h>
	29
2a1f429a KZ	30	#include <libmount.h>
2a1f429a KZ	31
97073441 KZ	32	#include "nls.h"
	33	#include "c.h"
	34
	35	/*** TODO: DOCS:
	36	*
	37	* -p, --pass-fd is unsupported
	38	* --guess-fstype is unsupported
	39	* -c = --no-canonicalize
	40	*/
	41
	42	/* exit status */
	43	#define EX_SUCCESS 0
	44	#define EX_USAGE 1 /* incorrect invocation or permission */
	45	#define EX_SYSERR 2 /* out of memory, cannot fork, ... */
	46	#define EX_SOFTWARE 4 /* internal mount bug or wrong version */
	47	#define EX_USER 8 /* user interrupt */
	48	#define EX_FILEIO 16 /* problems writing, locking, ... mtab/fstab */
	49	#define EX_FAIL 32 /* mount failure */
	50	#define EX_SOMEOK 64 /* some mount succeeded */
	51
97073441 KZ	52	static void __attribute__((__noreturn__)) exit_non_root(const char *option)
	53	{
	54	const uid_t ruid = getuid();
	55	const uid_t euid = geteuid();
	56
	57	if (ruid == 0 && euid != 0) {
	58	/* user is root, but setuid to non-root */
	59	if (option)
	60	errx(EX_USAGE, _("only root can use \"--%s\" option "
	61	"(effective UID is %u)"),
	62	option, euid);
	63	errx(EX_USAGE, _("only root can do that "
	64	"(effective UID is %u)"), euid);
	65	}
	66	if (option)
	67	errx(EX_USAGE, _("only root can use \"--%s\" option"), option);
	68	errx(EX_USAGE, _("only root can do that"));
	69	}
	70
	71	static void __attribute__((__noreturn__)) print_version(void)
	72	{
	73	const char *ver = NULL;
	74
	75	mnt_get_library_version(&ver);
	76
	77	printf("%s from %s (libmount %s)\n",
	78	program_invocation_short_name, PACKAGE_STRING, ver);
	79	exit(EX_SUCCESS);
	80	}
	81
7fc6d2b8	82	static int table_parser_errcb(struct libmnt_table *tb __attribute__((__unused__)),
9f7472b0 KZ	83	const char *filename, int line)
	84	{
	85	if (filename)
	86	warnx(_("%s: parse error: ignore entry at line %d."),
	87	filename, line);
	88	return 0;
	89	}
	90
97073441 KZ	91	static const char opt_to_longopt(int c, const struct option opts)
	92	{
	93	const struct option *o;
	94
	95	for (o = opts; o->name; o++)
	96	if (o->val == c)
	97	return o->name;
	98	return NULL;
	99	}
	100
11754572	101	static void print_all(struct libmnt_context cxt, char pattern, int show_label)
97073441	102	{
68164f6c	103	struct libmnt_table *tb;
a0c014dc	104	struct libmnt_iter *itr = NULL;
68164f6c KZ	105	struct libmnt_fs *fs;
68164f6c KZ	106	struct libmnt_cache *cache = NULL;
97073441	107
11754572 KZ	108	if (mnt_context_get_mtab(cxt, &tb))
11754572 KZ	109	err(EX_SYSERR, _("failed to read mtab"));
97073441 KZ	110
97073441 KZ	111	itr = mnt_new_iter(MNT_ITER_FORWARD);
11754572 KZ	112	if (!itr)
11754572 KZ	113	err(EX_SYSERR, _("failed to initialize libmount iterator"));
97073441 KZ	114	if (show_label)
	115	cache = mnt_new_cache();
	116
9f7472b0	117	while (mnt_table_next_fs(tb, itr, &fs) == 0) {
97073441 KZ	118	const char *type = mnt_fs_get_fstype(fs);
97073441 KZ	119	const char *src = mnt_fs_get_source(fs);
7cf389f7	120	const char *optstr = mnt_fs_get_options(fs);
2576b4e7	121	char *xsrc;
97073441 KZ	122
	123	if (type && pattern && !mnt_match_fstype(type, pattern))
	124	continue;
	125
2576b4e7 KZ	126	xsrc = mnt_pretty_path(src, cache);
2576b4e7 KZ	127	printf ("%s on %s", xsrc, mnt_fs_get_target(fs));
97073441 KZ	128	if (type)
	129	printf (" type %s", type);
	130	if (optstr)
	131	printf (" (%s)", optstr);
	132	if (show_label && src) {
	133	char *lb = mnt_cache_find_tag_value(cache, src, "LABEL");
	134	if (lb)
	135	printf (" [%s]", lb);
	136	}
	137	fputc('\n', stdout);
2576b4e7	138	free(xsrc);
97073441	139	}
11754572	140
97073441	141	mnt_free_cache(cache);
b192b7b9	142	mnt_free_iter(itr);
97073441 KZ	143	}
97073441 KZ	144
9f7472b0 KZ	145	/*
	146	* mount -a [-F]
	147	* ... -F is not supported yet (TODO)
	148	*/
	149	static int mount_all(struct libmnt_context *cxt,
	150	int forkme __attribute__((unused)))
a9ae3955	151	{
9f7472b0 KZ	152	struct libmnt_iter *itr;
	153	struct libmnt_fs *fs;
	154	int mntrc, ignored, rc = EX_SUCCESS;
	155
	156	itr = mnt_new_iter(MNT_ITER_FORWARD);
	157	if (!itr) {
	158	warn(_("failed to initialize libmount iterator"));
	159	return EX_SYSERR;
	160	}
	161
	162	while (mnt_context_next_mount(cxt, itr, &fs, &mntrc, &ignored) == 0) {
	163
	164	const char *tgt = mnt_fs_get_target(fs);
	165
	166	if (ignored) {
	167	if (mnt_context_is_verbose(cxt))
	168	printf(ignored == 1 ? _("%-20s: ignored\n") :
	169	_("%-20s: already mounted\n"),
	170	tgt);
	171	} else if (!mnt_context_get_status(cxt)) {
	172	if (mntrc > 0) {
	173	errno = mntrc;
	174	printf(_("%-20s: failed: %s\n"), tgt,
	175	strerror(mntrc));
	176	rc \|= EX_FAIL;
	177	} else {
	178	printf(_("%-20s: failed\n"), tgt);
	179	rc \|= EX_SYSERR;
	180	}
	181	} else {
	182	if (mnt_context_is_verbose(cxt))
	183	printf("%-20s: successfully mounted\n", tgt);
	184
	185	rc \|= EX_SOMEOK;
	186	}
	187	}
	188
	189	return rc;
a9ae3955 KZ	190	}
a9ae3955 KZ	191
97073441 KZ	192	static void __attribute__((__noreturn__)) usage(FILE *out)
	193	{
	194	fprintf(out, _("Usage:\n"
	195	" %1$s [-lhV]\n"
	196	" %1$s -a [options]\n"
	197	" %1$s [options] <source> \| <directory>\n"
	198	" %1$s [options] <source> <directory>\n"
	199	" %1$s <operation> <mountpoint> [<target>]\n"),
	200	program_invocation_short_name);
	201
	202	fprintf(out, _(
	203	"\nOptions:\n"
	204	" -a, --all mount all filesystems mentioned in fstab\n"
97073441	205	" -c, --no-canonicalize don't canonicalize paths\n"
eaca47f7 BS	206	" -f, --fake dry run; skip the mount(2) syscall\n"
	207	" -F, --fork fork off for each device (use with -a)\n"));
	208	fprintf(out, _(
	209	" -h, --help display this help text and exit\n"
97073441 KZ	210	" -i, --internal-only don't call the mount.<type> helpers\n"
97073441 KZ	211	" -l, --show-labels lists all mounts with LABELs\n"
eaca47f7 BS	212	" -n, --no-mtab don't write to /etc/mtab\n"));
	213	fprintf(out, _(
	214	" -o, --options <list> comma-separated list of mount options\n"
	215	" -O, --test-opts <list> limit the set of filesystems (use with -a)\n"
	216	" -r, --read-only mount the filesystem read-only (same as -o ro)\n"
	217	" -t, --types <list> limit the set of filesystem types\n"));
	218	fprintf(out, _(
	219	" -v, --verbose say what is being done\n"
	220	" -V, --version display version information and exit\n"
	221	" -w, --read-write mount the filesystem read-write (default)\n"));
97073441	222
eaca47f7	223	fprintf(out, _(
97073441 KZ	224	"\nSource:\n"
	225	" -L, --label <label> synonym for LABEL=<label>\n"
	226	" -U, --uuid <uuid> synonym for UUID=<uuid>\n"
	227	" LABEL=<label> specifies device by filesystem label\n"
eaca47f7 BS	228	" UUID=<uuid> specifies device by filesystem UUID\n"));
eaca47f7 BS	229	fprintf(out, _(
97073441 KZ	230	" <device> specifies device by path\n"
97073441 KZ	231	" <directory> mountpoint for bind mounts (see --bind/rbind)\n"
eaca47f7	232	" <file> regular file for loopdev setup\n"));
97073441	233
eaca47f7	234	fprintf(out, _(
97073441 KZ	235	"\nOperations:\n"
	236	" -B, --bind mount a subtree somewhere else (same as -o bind)\n"
	237	" -M, --move move a subtree to some other place\n"
eaca47f7 BS	238	" -R, --rbind mount a subtree and all submounts somewhere else\n"));
eaca47f7 BS	239	fprintf(out, _(
97073441 KZ	240	" --make-shared mark a subtree as shared\n"
	241	" --make-slave mark a subtree as slave\n"
	242	" --make-private mark a subtree as private\n"
eaca47f7 BS	243	" --make-unbindable mark a subtree as unbindable\n"));
eaca47f7 BS	244	fprintf(out, _(
97073441 KZ	245	" --make-rshared recursively mark a whole subtree as shared\n"
	246	" --make-rslave recursively mark a whole subtree as slave\n"
	247	" --make-rprivate recursively mark a whole subtree as private\n"
eaca47f7	248	" --make-runbindable recursively mark a whole subtree as unbindable\n"));
97073441 KZ	249
	250	fprintf(out, _("\nFor more information see mount(8).\n"));
	251
	252	exit(out == stderr ? EX_USAGE : EX_SUCCESS);
	253	}
	254
	255	int main(int argc, char **argv)
	256	{
11754572	257	int c, rc = EX_SUCCESS, all = 0, forkme = 0, show_labels = 0;
68164f6c	258	struct libmnt_context *cxt;
97073441 KZ	259	char source = NULL, srcbuf = NULL;
	260	char *types = NULL;
	261	unsigned long oper = 0;
	262
6c7d5ae9	263	static const struct option longopts[] = {
97073441 KZ	264	{ "all", 0, 0, 'a' },
	265	{ "fake", 0, 0, 'f' },
	266	{ "fork", 0, 0, 'F' },
	267	{ "help", 0, 0, 'h' },
	268	{ "no-mtab", 0, 0, 'n' },
	269	{ "read-only", 0, 0, 'r' },
	270	{ "ro", 0, 0, 'r' },
	271	{ "verbose", 0, 0, 'v' },
	272	{ "version", 0, 0, 'V' },
	273	{ "read-write", 0, 0, 'w' },
	274	{ "rw", 0, 0, 'w' },
	275	{ "options", 1, 0, 'o' },
	276	{ "test-opts", 1, 0, 'O' },
	277	{ "types", 1, 0, 't' },
	278	{ "uuid", 1, 0, 'U' },
	279	{ "label", 1, 0, 'L'},
	280	{ "bind", 0, 0, 'B' },
	281	{ "move", 0, 0, 'M' },
	282	{ "rbind", 0, 0, 'R' },
	283	{ "make-shared", 0, 0, 136 },
	284	{ "make-slave", 0, 0, 137 },
	285	{ "make-private", 0, 0, 138 },
	286	{ "make-unbindable", 0, 0, 139 },
	287	{ "make-rshared", 0, 0, 140 },
	288	{ "make-rslave", 0, 0, 141 },
	289	{ "make-rprivate", 0, 0, 142 },
	290	{ "make-runbindable", 0, 0, 143 },
	291	{ "no-canonicalize", 0, 0, 'c' },
	292	{ "internal-only", 0, 0, 'i' },
	293	{ "show-labels", 0, 0, 'l' },
	294	{ NULL, 0, 0, 0 }
	295	};
	296
	297	setlocale(LC_ALL, "");
	298	bindtextdomain(PACKAGE, LOCALEDIR);
	299	textdomain(PACKAGE);
	300
	301	mnt_init_debug(0);
	302	cxt = mnt_new_context();
	303	if (!cxt)
	304	err(EX_SYSERR, _("libmount context allocation failed"));
	305
9f7472b0 KZ	306	mnt_context_set_tables_errcb(cxt, table_parser_errcb);
9f7472b0 KZ	307
97073441 KZ	308	while ((c = getopt_long(argc, argv, "aBcfFhilL:Mno:O:rRsU:vVwt:",
	309	longopts, NULL)) != -1) {
	310
	311	/* only few options are allowed for non-root users */
	312	if (mnt_context_is_restricted(cxt) && !strchr("hlLUVv", c))
	313	exit_non_root(opt_to_longopt(c, longopts));
	314
	315	switch(c) {
	316	case 'a':
	317	all = 1;
97073441 KZ	318	break;
	319	case 'c':
	320	mnt_context_disable_canonicalize(cxt, TRUE);
	321	break;
	322	case 'f':
	323	mnt_context_enable_fake(cxt, TRUE);
	324	break;
	325	case 'F':
9f7472b0	326	forkme = 1;
97073441 KZ	327	break;
	328	case 'h':
	329	usage(stdout);
	330	break;
	331	case 'i':
	332	mnt_context_disable_helpers(cxt, TRUE);
	333	break;
	334	case 'n':
	335	mnt_context_disable_mtab(cxt, TRUE);
	336	break;
	337	case 'r':
	338	if (mnt_context_append_options(cxt, "ro"))
	339	err(EX_SYSERR, _("failed to append options"));
	340	break;
	341	case 'v':
	342	mnt_context_enable_verbose(cxt, TRUE);
	343	break;
	344	case 'V':
	345	print_version();
	346	break;
	347	case 'w':
	348	if (mnt_context_append_options(cxt, "rw"))
	349	err(EX_SYSERR, _("failed to append options"));
	350	break;
	351	case 'o':
	352	if (mnt_context_append_options(cxt, optarg))
	353	err(EX_SYSERR, _("failed to append options"));
	354	break;
	355	case 'O':
	356	if (mnt_context_set_options_pattern(cxt, optarg))
	357	err(EX_SYSERR, _("failed to set options pattern"));
	358	break;
	359	case 'L':
	360	case 'U':
	361	if (source)
e8ab5ce3	362	errx(EX_USAGE, _("only one <source> may be specified"));
97073441 KZ	363	if (asprintf(&srcbuf, "%s=\"%s\"",
	364	c == 'L' ? "LABEL" : "UUID", optarg) <= 0)
	365	err(EX_SYSERR, _("failed to allocate source buffer"));
	366	source = srcbuf;
	367	break;
	368	case 'l':
	369	show_labels = 1;
	370	break;
	371	case 't':
	372	types = optarg;
	373	break;
	374	case 's':
	375	mnt_context_enable_sloppy(cxt, TRUE);
	376	break;
	377	case 'B':
	378	oper = MS_BIND;
	379	break;
	380	case 'M':
	381	oper = MS_MOVE;
	382	break;
	383	case 'R':
	384	oper = (MS_BIND \| MS_REC);
	385	break;
	386	case 136:
	387	oper = MS_SHARED;
	388	break;
	389	case 137:
	390	oper = MS_SLAVE;
	391	break;
	392	case 138:
	393	oper = MS_PRIVATE;
	394	break;
	395	case 139:
	396	oper = MS_UNBINDABLE;
	397	break;
	398	case 140:
	399	oper = (MS_SHARED \| MS_REC);
	400	break;
	401	case 141:
	402	oper = (MS_SLAVE \| MS_REC);
	403	break;
	404	case 142:
	405	oper = (MS_PRIVATE \| MS_REC);
	406	break;
	407	case 143:
	408	oper = (MS_UNBINDABLE \| MS_REC);
	409	break;
	410	default:
	411	usage(stderr);
	412	break;
	413	}
	414	}
	415
	416	argc -= optind;
	417	argv += optind;
	418
	419	if (!source && !argc && !all) {
	420	if (oper)
	421	usage(stderr);
11754572	422	print_all(cxt, types, show_labels);
97073441 KZ	423	goto done;
	424	}
	425
	426	if (oper && (types \|\| all \|\| source))
	427	usage(stderr);
	428
9f7472b0 KZ	429	if (types && (all \|\| strchr(types, ',') \|\|
9f7472b0 KZ	430	strncmp(types, "no", 2) == 0))
97073441 KZ	431	mnt_context_set_fstype_pattern(cxt, types);
	432	else if (types)
	433	mnt_context_set_fstype(cxt, types);
	434
a9ae3955 KZ	435	if (all) {
	436	/*
	437	* A) Mount all
	438	*/
9f7472b0	439	rc = mount_all(cxt, forkme);
11754572	440	goto done;
a9ae3955 KZ	441
	442	} else if (argc == 0 && source) {
	443	/*
	444	* B) mount -L\|-U
	445	*/
97073441 KZ	446	mnt_context_set_source(cxt, source);
	447
	448	} else if (argc == 1) {
a9ae3955 KZ	449	/*
	450	* C) mount [-L\|-U] <target>
	451	* mount <source\|target>
	452	*/
97073441 KZ	453	if (source) {
	454	if (mnt_context_is_restricted(cxt))
	455	exit_non_root(NULL);
	456	mnt_context_set_source(cxt, source);
	457	}
	458	mnt_context_set_target(cxt, argv[0]);
	459
	460	} else if (argc == 2 && !source) {
a9ae3955 KZ	461	/*
	462	* D) mount <source> <target>
	463	*/
97073441 KZ	464	if (mnt_context_is_restricted(cxt))
	465	exit_non_root(NULL);
	466	mnt_context_set_source(cxt, argv[0]);
	467	mnt_context_set_target(cxt, argv[1]);
	468	} else
	469	usage(stderr);
	470
	471	if (oper)
68164f6c	472	mnt_context_set_mflags(cxt, oper);
97073441	473
cfb9db30	474	rc = mnt_context_mount(cxt);
97073441 KZ	475	if (rc) {
	476	/* TODO: call mnt_context_strerror() */
	477	rc = EX_FAIL;
	478	} else
	479	rc = EX_SUCCESS;
	480	done:
	481	free(srcbuf);
	482	mnt_free_context(cxt);
	483	return rc;
	484	}
	485