Allocate a test directory and corrupt it with debugfs. The corruption
is done by writing an invalid inode mode. This file can be later
looked up to trigger a corruption error.
Signed-off-by: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxx>
---
testcases/kernel/syscalls/fanotify/fanotify20.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/testcases/kernel/syscalls/fanotify/fanotify20.c b/testcases/kernel/syscalls/fanotify/fanotify20.c
index 7c4b01720654..298bb303a810 100644
--- a/testcases/kernel/syscalls/fanotify/fanotify20.c
+++ b/testcases/kernel/syscalls/fanotify/fanotify20.c
@@ -43,9 +43,12 @@ static char event_buf[BUF_SIZE];
int fd_notify;
#define MOUNT_PATH "test_mnt"
+#define BASE_DIR "internal_dir"
+#define BAD_DIR BASE_DIR"/bad_dir"
/* These expected FIDs are common to multiple tests */
static struct fanotify_fid_t null_fid;
+static struct fanotify_fid_t bad_file_fid;
static void do_debugfs_request(const char *dev, char *request)
{
@@ -182,6 +185,18 @@ static void do_test(unsigned int i)
check_event(event_buf, read_len, tcase);
}
+static void pre_corrupt_fs(void)
+{
+ SAFE_MKDIR(MOUNT_PATH"/"BASE_DIR, 0777);
+ SAFE_MKDIR(MOUNT_PATH"/"BAD_DIR, 0777);
+
+ fanotify_save_fid(MOUNT_PATH"/"BAD_DIR, &bad_file_fid);
+
+ SAFE_UMOUNT(MOUNT_PATH);
+ do_debugfs_request(tst_device->dev, "sif " BAD_DIR " mode 0xff");
+ SAFE_MOUNT(tst_device->dev, MOUNT_PATH, tst_device->fs_type, 0, NULL);
+}
+
static void init_null_fid(void)
{
/* Use fanotify_save_fid to fill the fsid and overwrite the
@@ -201,6 +216,8 @@ static void setup(void)
init_null_fid();
+ pre_corrupt_fs();
+
fd_notify = SAFE_FANOTIFY_INIT(FAN_CLASS_NOTIF|FAN_REPORT_FID,
O_RDONLY);
--
2.33.0
