static int mnt_parse_utab_line(struct libmnt_fs *fs, const char *s)
{
	const char *p = s;

	assert(fs);
	assert(s);
	assert(!fs->source);
	assert(!fs->target);

	while (p && *p) {
		const char *end = NULL;

		while (*p == ' ') p++;
		if (!*p)
			break;

		if (!fs->source && !strncmp(p, "SRC=", 4)) {
			char *v = unmangle(p + 4, &end);
			if (!v)
				goto enomem;
			if (__mnt_fs_set_source_ptr(fs, v))
				free(v);

		} else if (!fs->target && !strncmp(p, "TARGET=", 7)) {
			fs->target = unmangle(p + 7, &end);
			if (!fs->target)
				goto enomem;

		} else if (!fs->root && !strncmp(p, "ROOT=", 5)) {
			fs->root = unmangle(p + 5, &end);
			if (!fs->root)
				goto enomem;

		} else if (!fs->bindsrc && !strncmp(p, "BINDSRC=", 8)) {
			fs->bindsrc = unmangle(p + 8, &end);
			if (!fs->bindsrc)
				goto enomem;

		} else if (!fs->user_optstr && !strncmp(p, "OPTS=", 5)) {
			fs->user_optstr = unmangle(p + 5, &end);
			if (!fs->user_optstr)
				goto enomem;

		} else if (!fs->attrs && !strncmp(p, "ATTRS=", 6)) {
			fs->attrs = unmangle(p + 6, &end);
			if (!fs->attrs)
				goto enomem;

		} else {
			/* unknown variable */
			while (*p && *p != ' ') p++;
		}
		if (end)
			p = end;
	}

	return 0;
enomem:
	DBG(TAB, ul_debug("utab parse error: ENOMEM"));
	return -ENOMEM;
}
static int mnt_parse_utab_line(struct libmnt_fs *fs, const char *s)
{
	const char *p = s;

	assert(fs);
	assert(s);
	assert(!fs->source);
	assert(!fs->target);

	while (p && *p) {
		const char *end = NULL;

		while (*p == ' ') p++;
		if (!*p)
			break;

		if (!fs->source && !strncmp(p, "SRC=", 4)) {
			char *v = unmangle(p + 4, &end);
			if (!v)
				goto enomem;
			if (__mnt_fs_set_source_ptr(fs, v))
				free(v);

		} else if (!fs->target && !strncmp(p, "TARGET=", 7)) {
			fs->target = unmangle(p + 7, &end);
			if (!fs->target)
				goto enomem;

		} else if (!fs->root && !strncmp(p, "ROOT=", 5)) {
			fs->root = unmangle(p + 5, &end);
			if (!fs->root)
				goto enomem;

		} else if (!fs->bindsrc && !strncmp(p, "BINDSRC=", 8)) {
			fs->bindsrc = unmangle(p + 8, &end);
			if (!fs->bindsrc)
				goto enomem;

		} else if (!fs->user_optstr && !strncmp(p, "OPTS=", 5)) {
			fs->user_optstr = unmangle(p + 5, &end);
			if (!fs->user_optstr)
				goto enomem;

		} else if (!fs->attrs && !strncmp(p, "ATTRS=", 6)) {
			fs->attrs = unmangle(p + 6, &end);
			if (!fs->attrs)
				goto enomem;

		} else {
			 
			while (*p && *p != ' ') p++;
		}
		if (end)
			p = end;
	}

	return 0;
enomem:
	DBG(TAB, ul_debug("utab parse error: ENOMEM"));
	return -ENOMEM;
}