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selftests/seccomp: Handle EINVAL on unshare(CLONE_NEWPID)

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BugLink: https://bugs.launchpad.net/bugs/2070337

commit ecaaa55c9fa5e8058445a8b891070b12208cdb6d upstream.

unshare(CLONE_NEWPID) can return EINVAL if the kernel does not have the
CONFIG_PID_NS option enabled.

Add a check on these calls to skip the test if we receive EINVAL.

Signed-off-by: Terry Tritton <terry.tritton@linaro.org>
Link: https://lore.kernel.org/r/20240124141357.1243457-2-terry.tritton@linaro.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Terry Tritton
2024-01-24 14:13:55 +00:00
committed by Stefan Bader
parent c66c588beb
commit 3d3eba0eac
1 changed files with 8 additions and 1 deletions
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tools/testing/selftests/seccomp/seccomp_bpf.c
+8 -1
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@@ -3709,7 +3709,12 @@ TEST(user_notification_sibling_pid_ns)
ASSERT_GE(pid, 0);
if (pid == 0) {
ASSERT_EQ(unshare(CLONE_NEWPID), 0);
ASSERT_EQ(unshare(CLONE_NEWPID), 0) {
if (errno == EPERM)
SKIP(return, "CLONE_NEWPID requires CAP_SYS_ADMIN");
else if (errno == EINVAL)
SKIP(return, "CLONE_NEWPID is invalid (missing CONFIG_PID_NS?)");
}
pid2 = fork();
ASSERT_GE(pid2, 0);
@@ -3727,6 +3732,8 @@ TEST(user_notification_sibling_pid_ns)
ASSERT_EQ(unshare(CLONE_NEWPID), 0) {
if (errno == EPERM)
SKIP(return, "CLONE_NEWPID requires CAP_SYS_ADMIN");
else if (errno == EINVAL)
SKIP(return, "CLONE_NEWPID is invalid (missing CONFIG_PID_NS?)");
}
ASSERT_EQ(errno, 0);