[LTP] [PATCH 3/3 v2] tst_test.sh: Fix filesystem support detection

[Petr Vorel]

Filesystem detection of locally used filesystem was broken on tests
which did not use TST_ALL_FILESYSTEMS as it 1) expected used filesystem
is $TST_FS_TYPE 2) this variable was not yet set.

Also this check makes sense only if test defines TST_SKIP_FILESYSTEMS
(to align with the condition in do_test_setup() in C API).

Move filesystem check after (optional) cd "$TST_TMPDIR" (TMPDIR can have
different filesystem).

Remove tst_skip_filesystems_skip.sh test, as filesystem on tmpfs would
have to be detected before.

Fixes: 1f6bd6e66 ("tst_test.sh: Add $TST_ALL_FILESYSTEMS")

Reported-by: Martin Doucha <mdoucha@suse.cz>
Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
 .../shell/tst_skip_filesystems_skip.sh          | 17 -----------------
 testcases/lib/tst_test.sh                       | 14 ++++++++------
 2 files changed, 8 insertions(+), 23 deletions(-)
 delete mode 100755 lib/newlib_tests/shell/tst_skip_filesystems_skip.sh

diff --git a/lib/newlib_tests/shell/tst_skip_filesystems_skip.sh b/lib/newlib_tests/shell/tst_skip_filesystems_skip.sh
deleted file mode 100755
index 6748d021d..000000000
--- a/lib/newlib_tests/shell/tst_skip_filesystems_skip.sh
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0-or-later
-# Copyright (c) 2022 Petr Vorel <pvorel@suse.cz>
-
-TST_MOUNT_DEVICE=1
-TST_NEEDS_ROOT=1
-TST_FS_TYPE=ext4
-TST_TESTFUNC=test
-TST_SKIP_FILESYSTEMS="ext4"
-
-test()
-{
-	tst_res TFAIL "test should be skipped with TCONF"
-}
-
-. tst_test.sh
-tst_run
diff --git a/testcases/lib/tst_test.sh b/testcases/lib/tst_test.sh
index 33aadea91..01c01b79b 100644
--- a/testcases/lib/tst_test.sh
+++ b/testcases/lib/tst_test.sh
@@ -702,12 +702,6 @@ tst_run()
 	[ "$TST_FORMAT_DEVICE" = 1 -o "$TST_ALL_FILESYSTEMS" = 1 ] && TST_NEEDS_DEVICE=1
 	[ "$TST_NEEDS_DEVICE" = 1 ] && TST_NEEDS_TMPDIR=1
 
-	if [ "$TST_ALL_FILESYSTEMS" != 1 ]; then
-		if ! tst_supported_fs -s "$TST_SKIP_FILESYSTEMS" $TST_FS_TYPE > /dev/null; then
-			tst_brk TCONF "$TST_FS_TYPE is skipped by the test"
-		fi
-	fi
-
 	if [ "$TST_NEEDS_DEVICE" = 1 ]; then
 		TST_DEVICE=$(tst_device acquire)
 
@@ -735,6 +729,14 @@ tst_run()
 		cd "$TST_TMPDIR"
 	fi
 
+	if [ "$TST_ALL_FILESYSTEMS" != 1 -a "$TST_SKIP_FILESYSTEMS" ]; then
+		if ! tst_supported_fs -s "$TST_SKIP_FILESYSTEMS" -d . > /dev/null; then
+			tst_brk TCONF "filesystem is not supported by the test"
+		fi
+
+		tst_res TINFO "filesystem is supported by the test"
+	fi
+
 	[ -n "$TST_NEEDS_CHECKPOINTS" ] && _tst_init_checkpoints
 
 	TST_MNTPOINT="${TST_MNTPOINT:-$PWD/mntpoint}"
-- 
2.37.3