scm_inq.c has no problem in functionality, but when compiled with
-Wflex-array-member-not-at-end, it shows this warning:
scm_inq.c:15:24: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]
15 | struct cmsghdr cmsghdr;
| ^~~~~~~
Let's silence it.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250811215432.3379570-3-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Let's add a simple test to check the basic functionality of SO_INQ.
The test does the following:
1. Create socketpair in self->fd[]
2. Enable SO_INQ
3. Send data via self->fd[0]
4. Receive data from self->fd[1]
5. Compare the SCM_INQ cmsg with ioctl(SIOCINQ)
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250702223606.1054680-8-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Kuniyuki Iwashima