With feature uuid=auto, overlayfs gets an fsid which is different than
the base fs fsid.
Signed-off-by: Amir Goldstein <amir73il@xxxxxxxxx>
---
testcases/kernel/syscalls/fanotify/fanotify13.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/testcases/kernel/syscalls/fanotify/fanotify13.c b/testcases/kernel/syscalls/fanotify/fanotify13.c
index 5c1d287d7..3bb9eb1df 100644
--- a/testcases/kernel/syscalls/fanotify/fanotify13.c
+++ b/testcases/kernel/syscalls/fanotify/fanotify13.c
@@ -96,6 +96,7 @@ static int fanotify_fd;
static int filesystem_mark_unsupported;
static char events_buf[BUF_SIZE];
static struct event_t event_set[EVENT_MAX];
+static struct fanotify_fid_t base_fs_fid;
static void create_objects(void)
{
@@ -113,8 +114,19 @@ static void get_object_stats(void)
{
unsigned int i;
+ fanotify_save_fid(OVL_BASE_MNTPOINT, &base_fs_fid);
for (i = 0; i < ARRAY_SIZE(objects); i++)
fanotify_save_fid(objects[i].path, &objects[i].fid);
+
+ /* Variant #2: watching overlayfs - expect fsid != base fs fsid */
+ if (ovl_mounted && tst_variant == 2 &&
+ memcmp(&objects[0].fid.fsid, &base_fs_fid.fsid,
+ sizeof(base_fs_fid.fsid)) == 0) {
+ tst_res(TFAIL,
+ "overlayfs fsid is the same as stat.f_fsid that was "
+ "obtained via statfs(2) on the base fs");
+ }
+
}
static int setup_marks(unsigned int fd, struct test_case_t *tc)
--
2.34.1
