zdtm: add a new test to check escaped charecter in mountinfo

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/zdtm.sh

@@ -182,6 +182,7 @@ generate_test_list()
 		ns/static/session00
 		ns/static/session01
 		ns/static/tempfs
+		ns/static/mount_paths
 		ns/static/bind-mount
 		static/utsname
 		static/ipc_namespace
@@ -271,6 +272,7 @@ generate_test_list()
 		ns/static/dumpable02
 		ns/static/deleted_dev
 		ns/static/tempfs
+		ns/static/mount_paths
 		ns/static/clean_mntns
 		ns/static/mntns_link_remap
 		ns/static/mntns_link_ghost
@@ -339,6 +341,7 @@ mntns_shared_bind
 mntns_shared_bind02
 mntns_root_bind
 mntns_rw_ro_rw
+mount_paths
 netns-dev
 sockets00
 cow01

test/zdtm/live/static/Makefile

@@ -178,6 +178,7 @@ TST_DIR		=				\
 		overmount_fifo			\
 		overmount_sock			\
 		tempfs				\
+		mount_paths			\
 		bind-mount			\
 		inotify00			\
 		cgroup00			\

test/zdtm/live/static/mount_paths.c

+#include <stdbool.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <linux/limits.h>
+
+#include "zdtmtst.h"
+
+const char *test_doc	= "Check that special charecters in paths are handled correctly";
+const char *test_author	= "Andrew Vagin <avagin@virtuozzo.com>";
+
+char *dirname;
+TEST_OPTION(dirname, string, "directory name", 1);
+
+#define TEST_DIR "tmpfs  \t \t\\\\\t test  \t\t\\\\ \t\\"
+
+int main(int argc, char **argv)
+{
+	int ret = 1;
+	char buf[1024], test_dir[PATH_MAX], fname[PATH_MAX];
+
+	test_init(argc, argv);
+
+	mkdir(dirname, 0700);
+
+	snprintf(test_dir, sizeof(test_dir), "%s/%s", dirname, TEST_DIR);
+	mkdir(test_dir, 0700);
+
+	if (mount("", test_dir, "tmpfs", 0, NULL)) {
+		err("mount");
+		return 1;
+	}
+
+	snprintf(fname, sizeof(buf), "%s/\\\t \\\\ \\tt", test_dir);
+	if (mkdir(fname, 0700)) {
+		err("mkdir");
+		return 1;
+	}
+
+	test_daemon();
+	test_waitsig();
+
+	if (access(fname, F_OK)) {
+		fail();
+		goto err;
+	}
+
+	pass();
+	ret = 0;
+err:
+	umount2(test_dir, MNT_DETACH);
+	rmdir(test_dir);
+	rmdir(dirname);
+	return ret;
+}