[LTP] [PATCH v2] kernel/pty06: Skip test when TTY not available

[Bogdan Lezhepekov]

Since TTYs under test are hardcoded, they
might not be available in some systems.

Signed-off-by: Bogdan Lezhepekov <blezhepekov@suse.de>
---
 testcases/kernel/pty/pty06.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/testcases/kernel/pty/pty06.c b/testcases/kernel/pty/pty06.c
index b621f584f..cc8eb1f85 100644
--- a/testcases/kernel/pty/pty06.c
+++ b/testcases/kernel/pty/pty06.c
@@ -45,8 +45,6 @@ static struct tst_fzsync_pair fzp;
 
 static void *open_close(void *unused)
 {
-	sprintf(tty_path_b, "/dev/tty%d", test_tty_port);
-
 	while (tst_fzsync_run_b(&fzp)) {
 		tst_fzsync_start_race_b(&fzp);
 		int fd = SAFE_OPEN(tty_path_b, O_RDWR);
@@ -60,7 +58,6 @@ static void *open_close(void *unused)
 
 static void do_test(void)
 {
-	sprintf(tty_path_a, "/dev/tty%d", test_tty_port + 1);
 	int fd = SAFE_OPEN(tty_path_a, O_RDWR);
 
 	tst_fzsync_pair_reset(&fzp, open_close);
@@ -80,6 +77,12 @@ static void do_test(void)
 
 static void setup(void)
 {
+	sprintf(tty_path_a, "/dev/tty%d", test_tty_port + 1);
+	sprintf(tty_path_b, "/dev/tty%d", test_tty_port);
+
+	if (access(tty_path_a, F_OK) || access(tty_path_b, F_OK))
+		tst_brk(TCONF, "TTY(s) under test not available in system");
+
 	tst_fzsync_pair_init(&fzp);
 }
 
-- 
2.35.1