On 06.11.2016 18:26, Nicolas Joly wrote:
> On Sun, Nov 06, 2016 at 11:56:31PM +0700, Robert Elz wrote:
>> Date: Sun, 6 Nov 2016 16:24:16 +0000
>> From: "Kamil Rytarowski" <ka...@netbsd.org>
>> Message-ID: <20161106162416.95d77f...@cvs.netbsd.org>
>>
>> | assert_pid1 asserts that non-root user cannot attach to PID 1 as it is
>> the
>> | /dev/init process. This tests is skipped if run as root.
>>
>> There's no need to skip it, just
>>
>> child=fork(); /* err if -1 */
>> if (child == 0) {
>> (void)setuid(10);
>> if (ptrace(.....) < 0)
>> _exit(errno);
>> else
>> _exit(0);
>> }
>> waitpid(child, &status, 0);
>> /* and check status */
>>
>> If you're root, the setuid() works, and the child isn't root any more.
>> if you happened to be uid(10), the setuid() is a no-op, if you were some
>> other user the setuid() fails, but you don't care.
>
> Or use dedicated ATF properties :
>
> atf_tc_set_md_var(tc, "require.user", "unprivileged");
>
> Documented in atf-test-case(4).
> It worked, thanks!
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