Example #1
0
static int is_mounted(struct libmnt_fs *fs)
{
	int rc;
	const char *src;

	src = mnt_fs_get_source(fs);
	if (!src)
		return 0;
	if (!mntcache)
		mntcache = mnt_new_cache();
	if (!mtab) {
		mtab = mnt_new_table();
		if (!mtab)
			err(FSCK_EX_ERROR, ("failed to initialize libmount table"));
		mnt_table_set_cache(mtab, mntcache);
		mnt_table_parse_mtab(mtab, NULL);
	}

	rc = mnt_table_find_source(mtab, src, MNT_ITER_BACKWARD) ? 1 : 0;
	if (verbose) {
		if (rc)
			printf(_("%s is mounted\n"), src);
		else
			printf(_("%s is not mounted\n"), src);
	}
	return rc;
}
Example #2
0
static int dir_to_device(const char *spec, dev_t *dev)
{
	struct libmnt_table *tb = mnt_new_table_from_file("/proc/self/mountinfo");
	struct libmnt_fs *fs;
	struct libmnt_cache *cache;
	int rc = -1;

	if (!tb) {
		/*
		 * Fallback. Traditional way to detect mountpoints. This way
		 * is independent on /proc, but not able to detect bind mounts.
		 */
		struct stat pst, st;
		char buf[PATH_MAX], *cn;
		int len;

		if (stat(spec, &st) != 0)
			return -1;

		cn = mnt_resolve_path(spec, NULL);	/* canonicalize */

		len = snprintf(buf, sizeof(buf), "%s/..", cn ? cn : spec);
		free(cn);

		if (len < 0 || (size_t) len + 1 > sizeof(buf))
			return -1;
		if (stat(buf, &pst) !=0)
			return -1;

		if ((st.st_dev != pst.st_dev) ||
		    (st.st_dev == pst.st_dev && st.st_ino == pst.st_ino)) {
			*dev = st.st_dev;
			return 0;
		}

		return -1;
	}

	/* to canonicalize all necessary paths */
	cache = mnt_new_cache();
	mnt_table_set_cache(tb, cache);

	fs = mnt_table_find_target(tb, spec, MNT_ITER_BACKWARD);
	if (fs && mnt_fs_get_target(fs)) {
		*dev = mnt_fs_get_devno(fs);
		rc = 0;
	}

	mnt_free_table(tb);
	mnt_free_cache(cache);
	return rc;
}
Example #3
0
struct libmnt_table *get_swaps(void)
{
	if (!swaps) {
		swaps = mnt_new_table();
		if (!swaps)
			return NULL;
		mnt_table_set_cache(swaps, mntcache);
		if (mnt_table_parse_swaps(swaps, NULL) != 0)
			return NULL;
	}

	return swaps;
}
Example #4
0
struct libmnt_table *get_fstab(void)
{
	if (!fstab) {
		fstab = mnt_new_table();
		if (!fstab)
			return NULL;
		mnt_table_set_cache(fstab, mntcache);
		if (mnt_table_parse_fstab(fstab, NULL) != 0)
			return NULL;
	}

	return fstab;
}
Example #5
0
static int dir_to_device(struct mountpoint_control *ctl)
{
	struct libmnt_table *tb = mnt_new_table_from_file(_PATH_PROC_MOUNTINFO);
	struct libmnt_fs *fs;
	struct libmnt_cache *cache;
	int rc = -1;

	if (!tb) {
		/*
		 * Fallback. Traditional way to detect mountpoints. This way
		 * is independent on /proc, but not able to detect bind mounts.
		 */
		struct stat pst;
		char buf[PATH_MAX], *cn;
		int len;

		cn = mnt_resolve_path(ctl->path, NULL);	/* canonicalize */

		len = snprintf(buf, sizeof(buf), "%s/..", cn ? cn : ctl->path);
		free(cn);

		if (len < 0 || (size_t) len >= sizeof(buf))
			return -1;
		if (stat(buf, &pst) !=0)
			return -1;

		if ((ctl->st.st_dev != pst.st_dev) ||
		    (ctl->st.st_dev == pst.st_dev && ctl->st.st_ino == pst.st_ino)) {
			ctl->dev = ctl->st.st_dev;
			return 0;
		}

		return -1;
	}

	/* to canonicalize all necessary paths */
	cache = mnt_new_cache();
	mnt_table_set_cache(tb, cache);
	mnt_unref_cache(cache);

	fs = mnt_table_find_target(tb, ctl->path, MNT_ITER_BACKWARD);
	if (fs && mnt_fs_get_target(fs)) {
		ctl->dev = mnt_fs_get_devno(fs);
		rc = 0;
	}

	mnt_unref_table(tb);
	return rc;
}
Example #6
0
/*
 * See if device has been mounted by looking in mount table.  If so, set
 * device name and mount point name, and return 1, otherwise return 0.
 */
static int device_get_mountpoint(char **devname, char **mnt)
{
	struct libmnt_fs *fs;
	int rc;

	*mnt = NULL;

	if (!mtab) {
		mtab = mnt_new_table();
		if (!mtab)
			err(EXIT_FAILURE, _("failed to initialize libmount table"));

		cache = mnt_new_cache();
		mnt_table_set_cache(mtab, cache);

		if (p_option)
			rc = mnt_table_parse_file(mtab, _PATH_PROC_MOUNTINFO);
		else
			rc = mnt_table_parse_mtab(mtab, NULL);
		if (rc)
			err(EXIT_FAILURE, _("failed to parse mount table"));
	}

	fs = mnt_table_find_source(mtab, *devname, MNT_ITER_BACKWARD);
	if (!fs) {
		/* maybe 'devname' is mountpoint rather than a real device */
		fs = mnt_table_find_target(mtab, *devname, MNT_ITER_BACKWARD);
		if (fs) {
			free(*devname);
			*devname = xstrdup(mnt_fs_get_source(fs));
		}
	}

	if (fs) {
		*mnt = xstrdup(mnt_fs_get_target(fs));
		/* We'll call umount(), so remove the filesystem from the table
		 * to avoid duplicate results in the next device_get_mountpoint()
		 * call */
		mnt_free_fs(fs);
	}
	return *mnt ? 0 : -1;
}
Example #7
0
/*
 * See if device has been mounted by looking in mount table.  If so, set
 * device name and mount point name, and return 1, otherwise return 0.
 */
static int device_get_mountpoint(char **devname, char **mnt)
{
	struct libmnt_fs *fs;
	int rc;

	*mnt = NULL;

	if (!mtab) {
		struct libmnt_cache *cache;

		mtab = mnt_new_table();
		if (!mtab)
			err(EXIT_FAILURE, _("failed to initialize libmount table"));

		cache = mnt_new_cache();
		mnt_table_set_cache(mtab, cache);
		mnt_unref_cache(cache);

		if (p_option)
			rc = mnt_table_parse_file(mtab, _PATH_PROC_MOUNTINFO);
		else
			rc = mnt_table_parse_mtab(mtab, NULL);
		if (rc)
			err(EXIT_FAILURE, _("failed to parse mount table"));
	}

	fs = mnt_table_find_source(mtab, *devname, MNT_ITER_BACKWARD);
	if (!fs) {
		/* maybe 'devname' is mountpoint rather than a real device */
		fs = mnt_table_find_target(mtab, *devname, MNT_ITER_BACKWARD);
		if (fs) {
			free(*devname);
			*devname = xstrdup(mnt_fs_get_source(fs));
		}
	}

	if (fs)
		*mnt = xstrdup(mnt_fs_get_target(fs));
	return *mnt ? 0 : -1;
}