jtkohl@athena.mit.edu (John T Kohl) (10/14/88)
Index: etc/syslogd.c 4.3BSD
Description:
when syslogd is configured to log messages to /dev/console or to
other hosts via the @hostname forwarding conventions, and it is
reconfigured by SIGHUP, it fails to close the file descriptors it uses,
and eventually syslogd will run out of file descriptors.
Repeat-By:
Put a line in your crontab to hangup syslogd every once in a while.
Then put a forwarding host line in your /etc/syslog.conf.
After a lot of hangups, watch syslog complain about a lack of
file descriptors. Examining with netstat shows lots of udp *.* ports.
Fix:
This patch closes the appropriate type of file descriptors:
*** syslogd.c Tue May 27 01:03:20 1986
--- /tmp/syslogd.c Thu Oct 13 14:24:53 1988
***************
*** 795,804 ****
/*
* Close all open log files.
*/
for (f = Files; f < &Files[NLOGS]; f++) {
! if (f->f_type == F_FILE || f->f_type == F_TTY)
(void) close(f->f_file);
f->f_type = F_UNUSED;
}
--- 795,811 ----
/*
* Close all open log files.
+ * This includes files, consoles, ttys, and forwarding sockets.
*/
for (f = Files; f < &Files[NLOGS]; f++) {
! switch (f->f_type) {
! case F_FILE:
! case F_TTY:
! case F_CONSOLE:
! case F_FORW:
(void) close(f->f_file);
+ break;
+ }
f->f_type = F_UNUSED;
}
John Kohl <jtkohl@ATHENA.MIT.EDU>
Digital Equipment Corporation/MIT Project Athena
(As usual, the opinions expressed above do not necessarily reflect the
opinions of my employer. :-)