net: af_unix: enable custom setsockopt for all socket types

unix_setsockopt() and the SOCK_CUSTOM_SOCKOPT flag were only wired up
for SOCK_STREAM (introduced along with the stream-only SO_INQ).
Consequently custom AF_UNIX options are unreachable on SOCK_DGRAM and
SOCK_SEQPACKET: those setsockopt() calls bypass unix_setsockopt() and
fall through to the generic sock_setsockopt(), failing with
-ENOPROTOOPT.

Set SOCK_CUSTOM_SOCKOPT for every AF_UNIX socket type in unix_create(), and
also for accepted sockets in unix_accept() (reachable for stream and
seqpacket).

This is a prerequisite for making SO_RIGHTS_NOTRUNC settable on all AF_UNIX
socket types.

Signed-off-by: Jori Koolstra <jkoolstra@xs4all.nl>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260813162818.149248-2-jkoolstra@xs4all.nl
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

0 files changed, 0 insertions, 0 deletions