[PATCH] selftests/tdx: skip when the TDX guest device is absent

[Eva Kurchatova]

verify_report fails outside a TDX guest, where /dev/tdx_guest does not
exist.

Skip only when the device node is missing, so that a real open()
failure, EPERM or EBUSY, still fails the test instead of being
reported as a skip.

Signed-off-by: Eva Kurchatova <eva.kurchatova@xxxxxxxxxxxxx>
---
 tools/testing/selftests/tdx/tdx_guest_test.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/tdx/tdx_guest_test.c b/tools/testing/selftests/tdx/tdx_guest_test.c
index dfaefa685519..c31cc77cc7df 100644
--- a/tools/testing/selftests/tdx/tdx_guest_test.c
+++ b/tools/testing/selftests/tdx/tdx_guest_test.c
@@ -135,6 +135,8 @@ TEST(verify_report)
 	int devfd, i;
 
 	devfd = open(TDX_GUEST_DEVNAME, O_RDWR | O_SYNC);
+	if (devfd < 0 && errno == ENOENT)
+		SKIP(return, "TDX guest device is not available");
 	ASSERT_LT(0, devfd);
 
 	/* Generate sample report data */
-- 
2.55.0