selftests: filesystems: return Kselftest Skip code for skipped tests

When devpts_pts test is skipped because of unmet dependencies and/or
unsupported configuration, it exits with error which is treated as
a fail by the Kselftest framework. This leads to false negative
result even when the test could not be run.

In another case, it returns pass for a skipped test reporting a false
postive.

Change it to return kselftest skip code when a test gets skipped to
clearly report that the test could not be run.

Change it to use ksft_exit_skip() when test is skipped.

Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>

1 files changed, 7 insertions, 4 deletions

diff --git a/tools/testing/selftests/filesystems/devpts_pts.c b/tools/testing/selftests/filesystems/devpts_pts.c
index b2712b16d7fd..b1fc9b916ace 100644
--- a/tools/testing/selftests/filesystems/devpts_pts.c
+++ b/tools/testing/selftests/filesystems/devpts_pts.c
@@ -11,6 +11,7 @@
 #include <asm/ioctls.h>
 #include <sys/mount.h>
 #include <sys/wait.h>
+#include "../kselftest.h"
 
 static bool terminal_dup2(int duplicate, int original)
 {
@@ -125,10 +126,12 @@ static int do_tiocgptpeer(char *ptmx, char *expected_procfd_contents)
                 if (errno == EINVAL) {
                         fprintf(stderr, "TIOCGPTPEER is not supported. "
                                         "Skipping test.\n");
-                        fret = EXIT_SUCCESS;
+                        fret = KSFT_SKIP;
+                } else {
+                        fprintf(stderr,
+                                "Failed to perform TIOCGPTPEER ioctl\n");
+                        fret = EXIT_FAILURE;
                 }
-
-                fprintf(stderr, "Failed to perform TIOCGPTPEER ioctl\n");
                 goto do_cleanup;
         }
 
@@ -281,7 +284,7 @@ int main(int argc, char *argv[])
         if (!isatty(STDIN_FILENO)) {
                 fprintf(stderr, "Standard input file descriptor is not attached "
                                 "to a terminal. Skipping test\n");
-                exit(EXIT_FAILURE);
+                exit(KSFT_SKIP);
         }
 
         ret = unshare(CLONE_NEWNS);