[PATCH for-next/seccomp 1/2] selftests/seccomp: Add SKIPs for failed unshare()

[Kees Cook]

Running the seccomp tests as a regular user shouldn't just fail tests
that require CAP_SYS_ADMIN (for getting a PID namespace). Instead,
detect those cases and SKIP them.

Signed-off-by: Kees Cook <keesc...@chromium.org>
---
 tools/testing/selftests/seccomp/seccomp_bpf.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c 
b/tools/testing/selftests/seccomp/seccomp_bpf.c
index bd97a985c9e6..08bfbb7fc1c2 100644
--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
@@ -3420,7 +3420,10 @@ TEST(user_notification_child_pid_ns)
        struct seccomp_notif req = {};
        struct seccomp_notif_resp resp = {};
 
-       ASSERT_EQ(unshare(CLONE_NEWUSER | CLONE_NEWPID), 0);
+       ASSERT_EQ(unshare(CLONE_NEWUSER | CLONE_NEWPID), 0) {
+               if (errno == EPERM)
+                       SKIP(return, "CLONE_NEWPID requires CAP_SYS_ADMIN");
+       };
 
        listener = user_notif_syscall(__NR_getppid,
                                      SECCOMP_FILTER_FLAG_NEW_LISTENER);
@@ -3485,7 +3488,10 @@ TEST(user_notification_sibling_pid_ns)
        }
 
        /* Create the sibling ns, and sibling in it. */
-       ASSERT_EQ(unshare(CLONE_NEWPID), 0);
+       ASSERT_EQ(unshare(CLONE_NEWPID), 0) {
+               if (errno == EPERM)
+                       SKIP(return, "CLONE_NEWPID requires CAP_SYS_ADMIN");
+       }
        ASSERT_EQ(errno, 0);
 
        pid2 = fork();
-- 
2.25.1