[PATCH v3] selftests/filesystems: Assume that TIOCGPTPEER is defined

[Mark Brown <broonie@kernel.org>]

The devpts_pts selftest has an ifdef in case an architecture does not
define TIOCGPTPEER, but the handling for this is broken since we need
errno to be set to EINVAL in order to skip the test as we should. Given
that this ioctl() has been defined since v4.15 we may as well just assume
it's there rather than write handling code which will probably never get
used.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
Changes in v3:
- Rebase onto v7.0-rc1
- Link to v2: https://patch.msgid.link/20251218-selftests-filesystems-devpts-tiocgptpeer-v2-1-a5fb5847fe58@kernel.org

Changes in v2:
- Rebase onto v6.19-rc1.
- Link to v1: https://patch.msgid.link/20251126-selftests-filesystems-devpts-tiocgptpeer-v1-1-92bd65d02981@kernel.org
---
 tools/testing/selftests/filesystems/devpts_pts.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/tools/testing/selftests/filesystems/devpts_pts.c b/tools/testing/selftests/filesystems/devpts_pts.c
index 54fea349204e..aa8d5324f2a6 100644
--- a/tools/testing/selftests/filesystems/devpts_pts.c
+++ b/tools/testing/selftests/filesystems/devpts_pts.c
@@ -119,9 +119,7 @@ static int do_tiocgptpeer(char *ptmx, char *expected_procfd_contents)
 		goto do_cleanup;
 	}
 
-#ifdef TIOCGPTPEER
 	slave = ioctl(master, TIOCGPTPEER, O_RDWR | O_NOCTTY | O_CLOEXEC);
-#endif
 	if (slave < 0) {
 		if (errno == EINVAL) {
 			fprintf(stderr, "TIOCGPTPEER is not supported. "

---
base-commit: 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f
change-id: 20251126-selftests-filesystems-devpts-tiocgptpeer-fbd30e579859

Best regards,
--  
Mark Brown <broonie@kernel.org>