@@ -93,6 +93,11 @@ static inline void fanotify_get_fid(const char *path, __kernel_fsid_t *fsid,
if (name_to_handle_at(AT_FDCWD, path, handle, &mount_id, 0) == -1) {
if (errno == EOPNOTSUPP) {
+ /* Try to request non-decodeable fid instead */
+ if (name_to_handle_at(AT_FDCWD, path, handle, &mount_id,
+ AT_HANDLE_FID) == 0)
+ return;
+
tst_brk(TCONF,
"filesystem %s does not support file handles",
tst_device->fs_type);
@@ -179,6 +184,7 @@ static inline int fanotify_events_supported_by_kernel(uint64_t mask,
* @return 0: fanotify supported both in kernel and on tested filesystem
* @return -1: @flags not supported in kernel
* @return -2: @flags not supported on tested filesystem (tested if @fname is not NULL)
+ * @return -3: @flags not supported on overlayfs (tested if @fname == OVL_MNT)
*/
static inline int fanotify_init_flags_supported_on_fs(unsigned int flags, const char *fname)
{
@@ -199,7 +205,7 @@ static inline int fanotify_init_flags_supported_on_fs(unsigned int flags, const
if (fname && fanotify_mark(fd, FAN_MARK_ADD, FAN_ACCESS, AT_FDCWD, fname) < 0) {
if (errno == ENODEV || errno == EOPNOTSUPP || errno == EXDEV) {
- rval = -2;
+ rval = strcmp(fname, OVL_MNT) ? -2 : -3;
} else {
tst_brk(TBROK | TERRNO,
"fanotify_mark (%d, FAN_MARK_ADD, ..., AT_FDCWD, %s) failed",
@@ -226,10 +232,11 @@ static inline void fanotify_init_flags_err_msg(const char *flags_str,
if (fail == -1)
res_func(file, lineno, TCONF,
"%s not supported in kernel?", flags_str);
- if (fail == -2)
+ if (fail == -2 || fail == -3)
res_func(file, lineno, TCONF,
- "%s not supported on %s filesystem",
- flags_str, tst_device->fs_type);
+ "%s not supported on %s%s filesystem",
+ flags_str, fail == -3 ? "overlayfs over " : "",
+ tst_device->fs_type);
}
#define FANOTIFY_INIT_FLAGS_ERR_MSG(flags, fail) \
@@ -287,6 +287,7 @@ static void do_setup(void)
* Bind mount to either base fs or to overlayfs over base fs:
* Variant #0: watch base fs - open files on base fs
* Variant #1: watch upper fs - open files on overlayfs
+ * Variant #2: watch overlayfs - open files on overlayfs
*
* Variant #1 tests a bug whose fix bc2473c90fca ("ovl: enable fsnotify
* events on underlying real files") in kernel 6.5 is not likely to be
@@ -294,11 +295,13 @@ static void do_setup(void)
* To avoid waiting for events that won't arrive when testing old kernels,
* require that kernel supports encoding fid with new flag AT_HADNLE_FID,
* also merged to 6.5 and not likely to be backported to older kernels.
+ * Variant #2 tests overlayfs watch with FAN_REPORT_FID, which also
+ * requires kernel with support for AT_HADNLE_FID.
*/
if (tst_variant) {
REQUIRE_HANDLE_TYPE_SUPPORTED_BY_KERNEL(AT_HANDLE_FID);
ovl_mounted = TST_MOUNT_OVERLAY();
- mnt = OVL_UPPER;
+ mnt = tst_variant == 1 ? OVL_UPPER : OVL_MNT;
} else {
mnt = OVL_BASE_MNTPOINT;
@@ -343,7 +346,7 @@ static void do_cleanup(void)
static struct tst_test test = {
.test = do_test,
.tcnt = ARRAY_SIZE(test_cases),
- .test_variants = 2,
+ .test_variants = 3,
.setup = do_setup,
.cleanup = do_cleanup,
.needs_root = 1,
Run a test variant watching overlayfs (over all supported fs) and reporting events with fid. This requires overlayfs support for AT_HANDLE_FID. Signed-off-by: Amir Goldstein <amir73il@gmail.com> --- testcases/kernel/syscalls/fanotify/fanotify.h | 15 +++++++++++---- testcases/kernel/syscalls/fanotify/fanotify13.c | 7 +++++-- 2 files changed, 16 insertions(+), 6 deletions(-)