[LTP] [PATCH 1/2] swapon01: Test on all filesystems

[Petr Vorel]

Test on all filesystems to increase coverage.  btrfs and tmpfs
currently does not support swap file, but keep it in case this get
changed in the future.

Testing on all filesystems usually requests root, but we don't require
it with .needs_root = 1. But using swapon() requires it as well, thus
keep it defined.

Also detect the support on the same file as which is being tested.

Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
IMHO it's not a big slowdown thus I keep btrfs and tmpfs.
They might get support one day.

 testcases/kernel/syscalls/swapon/swapon01.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/testcases/kernel/syscalls/swapon/swapon01.c b/testcases/kernel/syscalls/swapon/swapon01.c
index b5c3f359c..6b7f96cf7 100644
--- a/testcases/kernel/syscalls/swapon/swapon01.c
+++ b/testcases/kernel/syscalls/swapon/swapon01.c
@@ -9,6 +9,9 @@
  * Checks that swapon() succeds with swapfile.
  */
 
+#define MNTPOINT	"mntpoint"
+#define SWAP_FILE	MNTPOINT"/swapfile01"
+
 #include <unistd.h>
 #include <errno.h>
 #include <stdlib.h>
@@ -18,14 +21,14 @@
 
 static void verify_swapon(void)
 {
-	TEST(tst_syscall(__NR_swapon, "./swapfile01", 0));
+	TEST(tst_syscall(__NR_swapon, SWAP_FILE, 0));
 
 	if (TST_RET == -1) {
 		tst_res(TFAIL | TTERRNO, "Failed to turn on swapfile");
 	} else {
 		tst_res(TPASS, "Succeeded to turn on swapfile");
 		/*we need to turn this swap file off for -i option */
-		if (tst_syscall(__NR_swapoff, "./swapfile01") != 0) {
+		if (tst_syscall(__NR_swapoff, SWAP_FILE) != 0) {
 			tst_brk(TBROK | TERRNO, "Failed to turn off swapfile,"
 				" system reboot after execution of LTP "
 				"test suite is recommended.");
@@ -35,13 +38,15 @@ static void verify_swapon(void)
 
 static void setup(void)
 {
-	is_swap_supported("./tstswap");
-	make_swapfile("swapfile01", 0);
+	is_swap_supported(SWAP_FILE);
+	make_swapfile(SWAP_FILE, 0);
 }
 
 static struct tst_test test = {
-	.needs_root = 1,
-	.needs_tmpdir = 1,
+	.mntpoint = MNTPOINT,
+	.mount_device = 1,
+	.needs_root = 1, /* for swapon() */
+	.all_filesystems = 1,
 	.test_all = verify_swapon,
 	.setup = setup
 };
-- 
2.42.0