[PATCH v2] generic/530: fix shutdown failure of generic/530 in overlay

[Jeffle Xu <jefflexu@linux.alibaba.com>]

Testcases are recommended to use  _require_scratch_shutdown()
and _scratch_shutdown() pair helper function to test and execute
shutdown.

generic/530 formmerly used _require_scratch_shutdown() to test
whether the filesystem supports shutdown or not, while executed
the shutdown action in a raw binary (src/t_open_tmpfiles) rather
than the recommended _scratch_shutdown() helper. This will cause
a "shutdown: Inappropriate ioctl for device" error message when
testing overlay filesystem.

This patch simply move the shutdown action from the raw binary
into the packaged _scratch_shutdown() helper. That is, we remove
the "shutdown" interface of t_open_tmpfiles.c and call
_scratch_shutdown() in genric/530 and xfs/501.

thx

Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
---
 src/t_open_tmpfiles.c | 19 -------------------
 tests/generic/530     |  4 +++-
 tests/xfs/501         |  4 +++-
 3 files changed, 6 insertions(+), 21 deletions(-)

diff --git a/src/t_open_tmpfiles.c b/src/t_open_tmpfiles.c
index da9390f..0393c6b 100644
--- a/src/t_open_tmpfiles.c
+++ b/src/t_open_tmpfiles.c
@@ -24,7 +24,6 @@ static int min_fd = -1;
 static int max_fd = -1;
 static unsigned int nr_opened = 0;
 static float start_time;
-static int shutdown_fs = 0;
 
 void clock_time(float *time)
 {
@@ -69,22 +68,6 @@ void die(void)
 				end_time - start_time);
 		fflush(stdout);
 
-		if (shutdown_fs) {
-			/*
-			 * Flush the log so that we have to process the
-			 * unlinked inodes the next time we mount.
-			 */
-			int flag = XFS_FSOP_GOING_FLAGS_LOGFLUSH;
-			int ret;
-
-			ret = ioctl(min_fd, XFS_IOC_GOINGDOWN, &flag);
-			if (ret) {
-				perror("shutdown");
-				exit(2);
-			}
-			exit(0);
-		}
-
 		clock_time(&start_time);
 		for (fd = min_fd; fd <= max_fd; fd++)
 			close(fd);
@@ -160,8 +143,6 @@ int main(int argc, char *argv[])
 		if (ret)
 			perror(argv[1]);
 	}
-	if (argc > 2 && !strcmp(argv[2], "shutdown"))
-		shutdown_fs = 1;
 
 	clock_time(&start_time);
 	while (1)
diff --git a/tests/generic/530 b/tests/generic/530
index b0d188b..56c6d32 100755
--- a/tests/generic/530
+++ b/tests/generic/530
@@ -49,7 +49,9 @@ ulimit -n $max_files
 
 # Open a lot of unlinked files
 echo create >> $seqres.full
-$here/src/t_open_tmpfiles $SCRATCH_MNT shutdown >> $seqres.full
+$here/src/t_open_tmpfiles $SCRATCH_MNT >> $seqres.full
+_scratch_shutdown -f
+
 
 # Unmount to prove that we can clean it all
 echo umount >> $seqres.full
diff --git a/tests/xfs/501 b/tests/xfs/501
index 974f341..4be9997 100755
--- a/tests/xfs/501
+++ b/tests/xfs/501
@@ -54,7 +54,9 @@ ulimit -n $max_files
 
 # Open a lot of unlinked files
 echo create >> $seqres.full
-$here/src/t_open_tmpfiles $SCRATCH_MNT shutdown >> $seqres.full
+$here/src/t_open_tmpfiles $SCRATCH_MNT >> $seqres.full
+_scratch_shutdown -f
+
 
 # Unmount to prove that we can clean it all
 echo umount >> $seqres.full
-- 
1.8.3.1