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Date: Thu, 18 Nov 2021 18:57:41 -0500 From: Gabriel Krisman Bertazi <krisman@...labora.com> To: pvorel@...e.cz, jack@...e.com, amir73il@...il.com, repnop@...gle.com Cc: linux-ext4@...r.kernel.org, kernel@...labora.com, khazhy@...gle.com, ltp@...ts.linux.it, Gabriel Krisman Bertazi <krisman@...labora.com> Subject: [PATCH v4 6/9] syscalls/fanotify22: Support submission of debugfs commands 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. Reviewed-by: Amir Goldstein <amir73il@...il.com> Signed-off-by: Gabriel Krisman Bertazi <krisman@...labora.com> --- changes since v1: - Add .needs_cmds to require debugfs --- testcases/kernel/syscalls/fanotify/fanotify22.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/testcases/kernel/syscalls/fanotify/fanotify22.c b/testcases/kernel/syscalls/fanotify/fanotify22.c index eeee582f1268..bb44ed55e96e 100644 --- a/testcases/kernel/syscalls/fanotify/fanotify22.c +++ b/testcases/kernel/syscalls/fanotify/fanotify22.c @@ -49,6 +49,13 @@ static void trigger_fs_abort(void) MS_REMOUNT|MS_RDONLY, "abort"); } +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; @@ -227,7 +234,11 @@ static struct tst_test test = { .mount_device = 1, .mntpoint = MOUNT_PATH, .needs_root = 1, - .dev_fs_type = "ext4" + .dev_fs_type = "ext4", + .needs_cmds = (const char *[]) { + "debugfs", + NULL + } }; #else -- 2.33.0
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