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selftests: pidfd: skip test if unshare fails with EPERM 

Similar to how ENOSYS causes a skip if pidfd_send_signal is not present,
we can do the same for unshare if it fails with EPERM.  This way, running
the test without privileges causes four tests to skip but no early bail out.

Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Paolo Bonzini 2020-07-07 11:39:27 -04:00 committed by Shuah Khan
parent bb91c0ca7b
commit 05790fd7f8
1 changed files with 16 additions and 5 deletions
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21
tools/testing/selftests/pidfd/pidfd_test.c
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@ -162,15 +162,26 @@ static int test_pidfd_send_signal_recycled_pid_fail(void)
}
ret = unshare(CLONE_NEWPID);
if (ret < 0)
if (ret < 0) {
if (errno == EPERM) {
ksft_test_result_skip("%s test: Unsharing pid namespace not permitted\n",
test_name);
return 0;
}
ksft_exit_fail_msg("%s test: Failed to unshare pid namespace\n",
test_name);
}
ret = unshare(CLONE_NEWNS);
if (ret < 0)
ksft_exit_fail_msg(
"%s test: Failed to unshare mount namespace\n",
test_name);
if (ret < 0) {
if (errno == EPERM) {
ksft_test_result_skip("%s test: Unsharing mount namespace not permitted\n",
test_name);
return 0;
}
ksft_exit_fail_msg("%s test: Failed to unshare mount namespace\n",
test_name);
}
ret = mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, 0);
if (ret < 0)