[Devel] [PATCH vz10] selftests: pci_endpoint: skip when the test device is absent

[Eva Kurchatova]

Every fixture opens /dev/pci-endpoint-test.0 without checking, so on a
machine that has no PCI endpoint test device each case fails on the
first ioctl against fd -1 rather than saying the hardware is not there.

Check for the device once before handing over to the harness. Doing it
there rather than in each of the four fixtures keeps it to a single skip.

https://virtuozzo.atlassian.net/browse/VSTOR-142446
Feature: fix selftests
Signed-off-by: Eva Kurchatova <eva.kurchatova at virtuozzo.com>
---
 .../selftests/pci_endpoint/pci_endpoint_test.c      | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c b/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c
index da0db0e7c969..640c74fd5b78 100644
--- a/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c
+++ b/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c
@@ -257,4 +257,15 @@ TEST_F(pcie_ep_doorbell, DOORBELL_TEST)
 	pci_ep_ioctl(PCITEST_DOORBELL, 0);
 	EXPECT_FALSE(ret) TH_LOG("Test failed for Doorbell\n");
 }
-TEST_HARNESS_MAIN
+static bool test_device_available(void)
+{
+	return access(test_device, F_OK) == 0;
+}
+
+int main(int argc, char **argv)
+{
+	if (!test_device_available())
+		ksft_exit_skip("no PCI endpoint test device %s\n", test_device);
+
+	return test_harness_run(argc, argv);
+}
-- 
2.55.0