From: Alexey Tikhonov <atikhono@xxxxxxxxxx> Date: Wed, 20 Dec 2023 18:28:34 +0100 > In case of connected AF_UNIX stream sockets, server-side > credentials are set at the time of a call to listen(2), > not when client-side calls connect(2). > > This is important if server side process changes UID/GID > after listen(2) and before connect(2). > > Reproducer is available in https://bugzilla.redhat.com/show_bug.cgi?id=2247682 > > Behavior was confirmed in the email thread > https://lore.kernel.org/linux-man/CABPeg3a9L0142gmdZZ+0hoD+Q3Vgv0BQ21g8Z+gf2kznWouErA@xxxxxxxxxxxxxx/ > > Signed-off-by: Alexey Tikhonov <atikhono@xxxxxxxxxx> Reviewed-by: Kuniyuki Iwashima <kuniyu@xxxxxxxxxx> Thanks! > --- > man7/unix.7 | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/man7/unix.7 b/man7/unix.7 > index e9edad467..71cdfc758 100644 > --- a/man7/unix.7 > +++ b/man7/unix.7 > @@ -331,7 +331,8 @@ This read-only socket option returns the > credentials of the peer process connected to this socket. > The returned credentials are those that were in effect at the time > of the call to > -.BR connect (2) > +.BR connect (2), > +.BR listen (2), > or > .BR socketpair (2). > .IP > -- > 2.41.0
