linux-ext4 - [PATCH 4/7] syscalls/fanotify20: Watch event after filesystem abort

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Date:   Mon,  2 Aug 2021 17:46:42 -0400
From:   Gabriel Krisman Bertazi <krisman@...labora.com>
To:     ltp@...ts.linux.it, jack@...e.com, amir73il@...il.com
Cc:     linux-ext4@...r.kernel.org, khazhy@...gle.com,
        kernel@...labora.com,
        Gabriel Krisman Bertazi <krisman@...labora.com>
Subject: [PATCH 4/7] syscalls/fanotify20: Watch event after filesystem abort

This test monitors the EXT4 specific error triggered after a file system
abort.  It works by forcing a remount with the option "abort".  This is
an error not related to a file so it is reported against the superblock
with a NULL FH.

Signed-off-by: Gabriel Krisman Bertazi <krisman@...labora.com>
---
 testcases/kernel/syscalls/fanotify/fanotify20.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/testcases/kernel/syscalls/fanotify/fanotify20.c b/testcases/kernel/syscalls/fanotify/fanotify20.c
index d8d788ae685f..7a9601072139 100644
--- a/testcases/kernel/syscalls/fanotify/fanotify20.c
+++ b/testcases/kernel/syscalls/fanotify/fanotify20.c
@@ -61,6 +61,14 @@ int fd_notify;
 
 #define MOUNT_PATH "test_mnt"
 
+#define EXT4_ERR_ESHUTDOWN 16
+
+static void trigger_fs_abort(void)
+{
+	SAFE_MOUNT(tst_device->dev, MOUNT_PATH, tst_device->fs_type,
+		   MS_REMOUNT|MS_RDONLY, "abort");
+}
+
 static const struct test_case {
 	char *name;
 	int error;
@@ -71,6 +79,13 @@ static const struct test_case {
 	void (*trigger_error)(void);
 	void (*prepare_fs)(void);
 } testcases[] = {
+	{
+		.name = "Trigger abort",
+		.trigger_error = &trigger_fs_abort,
+		.error_count = 1,
+		.error = EXT4_ERR_ESHUTDOWN,
+		.inode = NULL
+	}
 };
 
 struct fanotify_event_info_header *get_event_info(
-- 
2.32.0