[CRIU] [PATCH 2/2] zdtm: check read-only tempfs mount
Andrey Vagin
avagin at openvz.org
Tue Sep 22 01:59:53 PDT 2015
From: Andrew Vagin <avagin at openvz.org>
Signed-off-by: Andrew Vagin <avagin at openvz.org>
---
test/zdtm.sh | 2 +
test/zdtm/live/static/Makefile | 1 +
test/zdtm/live/static/tempfs_ro.c | 78 +++++++++++++++++++++++++++++++++++++++
3 files changed, 81 insertions(+)
create mode 100644 test/zdtm/live/static/tempfs_ro.c
diff --git a/test/zdtm.sh b/test/zdtm.sh
index ba37265..ba42b77 100755
--- a/test/zdtm.sh
+++ b/test/zdtm.sh
@@ -192,6 +192,7 @@ generate_test_list()
ns/static/session00
ns/static/session01
ns/static/tempfs
+ ns/static/tempfs_ro
ns/static/mnt_ro_bind
ns/static/mount_paths
ns/static/bind-mount
@@ -334,6 +335,7 @@ vt
rtc
maps007
tempfs
+tempfs_ro
mnt_ro_bind
bind-mount
mountpoints
diff --git a/test/zdtm/live/static/Makefile b/test/zdtm/live/static/Makefile
index 7a97b0e..812f0e1 100644
--- a/test/zdtm/live/static/Makefile
+++ b/test/zdtm/live/static/Makefile
@@ -186,6 +186,7 @@ TST_DIR = \
overmount_fifo \
overmount_sock \
tempfs \
+ tempfs_ro \
mnt_ro_bind \
mount_paths \
bind-mount \
diff --git a/test/zdtm/live/static/tempfs_ro.c b/test/zdtm/live/static/tempfs_ro.c
new file mode 100644
index 0000000..ff421e2
--- /dev/null
+++ b/test/zdtm/live/static/tempfs_ro.c
@@ -0,0 +1,78 @@
+#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 read-only tmpfs mount";
+const char *test_author = "Andrew Vagin <avagin at openvz.org>";
+
+char *dirname;
+TEST_OPTION(dirname, string, "directory name", 1);
+
+#define TEST_WORD "testtest"
+
+int main(int argc, char **argv)
+{
+ int fd, ret = 1;
+ char buf[1024], fname[PATH_MAX];
+
+ test_init(argc, argv);
+
+ mkdir(dirname, 0700);
+ if (mount("none", dirname, "tmpfs", 0, "") < 0) {
+ fail("Can't mount tmpfs");
+ return 1;
+ }
+
+ snprintf(fname, sizeof(buf), "%s/test.file", dirname);
+ fd = open(fname, O_RDWR | O_CREAT, 0644);
+ if (fd < 0) {
+ err("open failed");
+ goto err;
+ }
+
+ if (write(fd, TEST_WORD, sizeof(TEST_WORD)) != sizeof(TEST_WORD)) {
+ err("write() failed");
+ goto err;
+ }
+ close(fd);
+
+ if (mount(NULL, dirname, "tmpfs", MS_REMOUNT | MS_RDONLY, NULL) < 0) {
+ fail("Can't mount tmpfs");
+ return 1;
+ }
+
+ test_daemon();
+ test_waitsig();
+
+
+ fd = open(fname, O_RDONLY);
+ if (fd < 0) {
+ err("open failed");
+ goto err;
+ }
+
+ buf[sizeof(TEST_WORD) + 1] = '\0';
+ if (read(fd, buf, sizeof(TEST_WORD)) != sizeof(TEST_WORD)) {
+ fail("Read failed");
+ goto err;
+ }
+ close(fd);
+
+ if (strcmp(buf, TEST_WORD)) {
+ fail("File corrupted");
+ goto err;
+ }
+
+ pass();
+ ret = 0;
+err:
+ umount2(dirname, MNT_DETACH);
+ rmdir(dirname);
+ return ret;
+}
--
2.4.3
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