On Sat, Apr 19, 2025 at 11:11:11AM -0400, John Hill via Postfix-users wrote:
> When I manually update my lmdb access tables, adding or deleting. I see this
> message in the log: error: accept connection: Socket operation on
> non-socket.
>
> The line before this error: table
> lmdb:/etc/postfix/maps/postscreen_blacklist has changed - finishing in the
> background
This is likely harmless, the background process replaces the control
sockets with the parent master process with duplicated copies of stdin,
and later exit cleanup may attempt some socket operations on these.
The event_server_drain() function reads in part:
for (fd = MASTER_LISTEN_FD; fd < MASTER_LISTEN_FD + socket_count; fd++)
{
event_disable_readwrite(fd);
(void) close(fd);
/* Play safe - don't reuse this file number. */
if (DUP2(STDIN_FILENO, fd) < 0)
msg_warn("%s: dup2(%d, %d): %m", myname, STDIN_FILENO, fd);
}
This can perhaps be changed to be less noisy at some point...
--
Viktor.
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