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selftests: unshare userns in seccomp pidns testcases 

The pid ns cannot be unshare()d as an unprivileged user without owning the
userns as well. Let's unshare the userns so that we can subsequently
unshare the pidns.

This also means that we don't need to set the no new privs bit as in the
other test cases, since we're unsharing the userns.

Signed-off-by: Tycho Andersen <tycho@tycho.ws>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Shuah Khan <shuah@kernel.org>
This commit is contained in:
Tycho Andersen 2019-01-18 17:12:17 -07:00 committed by Shuah Khan
parent c7140706cb
commit 30d53a5860
1 changed files with 3 additions and 1 deletions
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4
tools/testing/selftests/seccomp/seccomp_bpf.c
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@ -3313,7 +3313,7 @@ TEST(user_notification_child_pid_ns)
struct seccomp_notif req = {};
struct seccomp_notif_resp resp = {};
ASSERT_EQ(unshare(CLONE_NEWPID), 0);
ASSERT_EQ(unshare(CLONE_NEWUSER | CLONE_NEWPID), 0);
listener = user_trap_syscall(__NR_getpid, SECCOMP_FILTER_FLAG_NEW_LISTENER);
ASSERT_GE(listener, 0);
@ -3416,6 +3416,8 @@ TEST(user_notification_fault_recv)
struct seccomp_notif req = {};
struct seccomp_notif_resp resp = {};
ASSERT_EQ(unshare(CLONE_NEWUSER), 0);
listener = user_trap_syscall(__NR_getpid, SECCOMP_FILTER_FLAG_NEW_LISTENER);
ASSERT_GE(listener, 0);