[LTP] [PATCH v2 1/2] fanotify06: add a test case for overlayfs
Amir Goldstein
amir73il@gmail.com
Tue Jun 4 17:10:34 CEST 2019
This test fails on overlayfs since kernel v4.19.
Added a test case for overlayfs mount.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
---
Changes since v1:
- Use new overlayfs mount helpers
- Add patch to fix EBUSY error on overlayfs umount
.../kernel/syscalls/fanotify/fanotify06.c | 61 +++++++++++++------
1 file changed, 43 insertions(+), 18 deletions(-)
diff --git a/testcases/kernel/syscalls/fanotify/fanotify06.c b/testcases/kernel/syscalls/fanotify/fanotify06.c
index 6a2e2494f..e053da0e5 100644
--- a/testcases/kernel/syscalls/fanotify/fanotify06.c
+++ b/testcases/kernel/syscalls/fanotify/fanotify06.c
@@ -15,6 +15,14 @@
* Date: Thu Nov 13 15:19:33 2014 -0800
*
* fanotify: fix notification of groups with inode & mount marks
+ *
+ * The overlayfs test case is a regression test for:
+ *
+ * commit d989903058a83e8536cc7aadf9256a47d5c173fe
+ * Author: Amir Goldstein <amir73il@gmail.com>
+ * Date: Wed Apr 24 19:39:50 2019 +0300
+ *
+ * ovl: do not generate duplicate fsnotify events for "fake" path
*/
#define _GNU_SOURCE
#include "config.h"
@@ -54,8 +62,18 @@ static int fd_notify[FANOTIFY_PRIORITIES][GROUPS_PER_PRIO];
static char event_buf[EVENT_BUF_LEN];
-#define MOUNT_NAME "mntpoint"
-static int mount_created;
+static const char mntpoint[] = OVL_BASE_MNTPOINT;
+
+static int ovl_mounted;
+
+static struct tcase {
+ const char *tname;
+ const char *mnt;
+ int use_overlay;
+} tcases[] = {
+ { "Fanotify merge mount mark", mntpoint, 0 },
+ { "Fanotify merge overlayfs mount mark", OVL_MNT, 1 },
+};
static void create_fanotify_groups(void)
{
@@ -72,12 +90,12 @@ static void create_fanotify_groups(void)
ret = fanotify_mark(fd_notify[p][i],
FAN_MARK_ADD | FAN_MARK_MOUNT,
FAN_MODIFY,
- AT_FDCWD, ".");
+ AT_FDCWD, fname);
if (ret < 0) {
tst_brk(TBROK | TERRNO,
"fanotify_mark(%d, FAN_MARK_ADD | "
"FAN_MARK_MOUNT, FAN_MODIFY, AT_FDCWD,"
- " '.') failed", fd_notify[p][i]);
+ " %s) failed", fd_notify[p][i], fname);
}
/* Add ignore mark for groups with higher priority */
if (p == 0)
@@ -130,11 +148,23 @@ static void verify_event(int group, struct fanotify_event_metadata *event)
}
}
-void test01(void)
+void test_fanotify(unsigned int n)
{
int ret;
unsigned int p, i;
struct fanotify_event_metadata *event;
+ struct tcase *tc = &tcases[n];
+
+ tst_res(TINFO, "Test #%d: %s", n, tc->tname);
+
+ if (tc->use_overlay && !ovl_mounted) {
+ tst_res(TCONF,
+ "overlayfs is not configured in this kernel.");
+ return;
+ }
+
+ sprintf(fname, "%s/tfile_%d", tc->mnt, getpid());
+ SAFE_TOUCH(fname, 0644, NULL);
create_fanotify_groups();
@@ -196,31 +226,26 @@ void test01(void)
static void setup(void)
{
- SAFE_MKDIR(MOUNT_NAME, 0755);
- SAFE_MOUNT(MOUNT_NAME, MOUNT_NAME, "none", MS_BIND, NULL);
- mount_created = 1;
- SAFE_CHDIR(MOUNT_NAME);
-
- sprintf(fname, "tfile_%d", getpid());
- SAFE_FILE_PRINTF(fname, "1");
+ ovl_mounted = TST_MOUNT_OVERLAY();
}
static void cleanup(void)
{
cleanup_fanotify_groups();
- SAFE_CHDIR("../");
-
- if (mount_created && tst_umount(MOUNT_NAME) < 0)
- tst_brk(TBROK | TERRNO, "umount failed");
+ if (ovl_mounted)
+ SAFE_UMOUNT(OVL_MNT);
}
static struct tst_test test = {
- .test_all = test01,
+ .test = test_fanotify,
+ .tcnt = ARRAY_SIZE(tcases),
.setup = setup,
.cleanup = cleanup,
.needs_tmpdir = 1,
- .needs_root = 1
+ .needs_root = 1,
+ .mount_device = 1,
+ .mntpoint = mntpoint,
};
#else
--
2.17.1
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