[PATCH v2 06/10] syscalls/fanotify20: Support submission of debugfs commands
From: Gabriel Krisman Bertazi <hidden>
Date: 2021-10-26 18:43:59
Also in:
ltp
Subsystem:
the rest · Maintainer:
Linus Torvalds
In order to test FAN_FS_ERROR, we want to corrupt the filesystem. The easiest way to do it is by using debugfs. Add a small helper to issue debugfs requests. Since most likely this will be the only testcase to need this, don't bother making it a proper helper for now. Signed-off-by: Gabriel Krisman Bertazi <redacted> --- changes since v1: - Add .needs_cmds to require debugfs --- testcases/kernel/syscalls/fanotify/fanotify20.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/testcases/kernel/syscalls/fanotify/fanotify20.c b/testcases/kernel/syscalls/fanotify/fanotify20.c
index 220cd51419e8..7c4b01720654 100644
--- a/testcases/kernel/syscalls/fanotify/fanotify20.c
+++ b/testcases/kernel/syscalls/fanotify/fanotify20.c@@ -47,6 +47,13 @@ int fd_notify; /* These expected FIDs are common to multiple tests */ static struct fanotify_fid_t null_fid; +static void do_debugfs_request(const char *dev, char *request) +{ + const char *cmd[] = {"debugfs", "-w", dev, "-R", request, NULL}; + + SAFE_CMD(cmd, NULL, NULL); +} + static struct test_case { char *name; int error;
@@ -216,7 +223,11 @@ static struct tst_test test = { .mntpoint = MOUNT_PATH, .all_filesystems = 0, .needs_root = 1, - .dev_fs_type = "ext4" + .dev_fs_type = "ext4", + .needs_cmds = (const char *[]) { + "debugfs", + NULL + } }; #else
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2.33.0