On Thu, Jan 30, 2025 at 08:40:30PM +0000, Lorenzo Stoakes wrote:

Add tests to assert that PIDFD_SELF* correctly refers to the current
thread and process.

We explicitly test pidfd_send_signal(), however We defer testing of
mm-specific functionality which uses pidfd, namely process_madvise() and
process_mrelease() to mm testing (though note the latter can not be
sensibly tested as it would require the testing process to be dying).

We also correct the pidfd_open_test.c fields which refer to .request_mask
whereas the UAPI header refers to .mask, which otherwise break the import
of the UAPI header.

Signed-off-by: Lorenzo Stoakes <redacted>

Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev>