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Initialize ListenSocket array earlier.

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After commit b0bea38705, syslogger prints 63 warnings about failing to
close a listen socket at postmaster startup. That's because the
syslogger process forks before the ListenSockets array is initialized,
so ClosePostmasterPorts() calls "close(0)" 64 times. The first call
succeeds, because fd 0 is stdin.

This has been like this since commit 9a86f03b4e in version 13, which
moved the SysLogger_Start() call to before initializing ListenSockets.
We just didn't notice until commit b0bea38705 added the LOG message.

Reported by Michael Paquier and Jeff Janes.

Author: Michael Paquier
Discussion: https://www.postgresql.org/message-id/ZOvvuQe0rdj2slA9%40paquier.xyz
Discussion: https://www.postgresql.org/message-id/ZO0fgDwVw2SUJiZx@paquier.xyz#482670177eb4eaf4c9f03c1eed963e5f
Backpatch-through: 13
This commit is contained in:
Heikki Linnakangas 2023-08-29 09:09:40 +03:00
parent 27566bcf3c
commit a01e479e84
1 changed files with 11 additions and 8 deletions
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19
src/backend/postmaster/postmaster.c
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@ -1092,6 +1092,17 @@ PostmasterMain(int argc, char *argv[])
errmsg("could not remove file \"%s\": %m",
LOG_METAINFO_DATAFILE)));
/*
* Initialize input sockets.
*
* Mark them all closed, and set up an on_proc_exit function that's
* charged with closing the sockets again at postmaster shutdown.
*/
for (i = 0; i < MAXLISTEN; i++)
ListenSocket[i] = PGINVALID_SOCKET;
on_proc_exit(CloseServerPorts, 0);
/*
* If enabled, start up syslogger collection subprocess
*/
@ -1126,15 +1137,7 @@ PostmasterMain(int argc, char *argv[])
/*
* Establish input sockets.
*
* First, mark them all closed, and set up an on_proc_exit function that's
* charged with closing the sockets again at postmaster shutdown.
*/
for (i = 0; i < MAXLISTEN; i++)
ListenSocket[i] = PGINVALID_SOCKET;
on_proc_exit(CloseServerPorts, 0);
if (ListenAddresses)
{
char *rawstring;