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| author | dwmalone <dwmalone@FreeBSD.org> | 2003-11-16 21:51:06 +0000 |
|---|---|---|
| committer | dwmalone <dwmalone@FreeBSD.org> | 2003-11-16 21:51:06 +0000 |
| commit | 0146715061514e61750069f049e3d6d08d20409c (patch) | |
| tree | 04b8138ea35be91b01435250e726b7c8a8f77cce /usr.sbin/syslogd | |
| parent | 898b9151c23c6a84f9599085231de4b26a6e09cd (diff) | |
| download | FreeBSD-src-0146715061514e61750069f049e3d6d08d20409c.zip FreeBSD-src-0146715061514e61750069f049e3d6d08d20409c.tar.gz | |
logerror is used in syslogd to log errors from syslogd itself. It
is possible for an error to occur while trying to log an error, and
this can result in infinite recursion (or at least until we run out
of stack).
Rather than this, we ignore requests to log an error while logging an
error.
PR: 51253
MFC after: 2 weeks
Diffstat (limited to 'usr.sbin/syslogd')
| -rw-r--r-- | usr.sbin/syslogd/syslogd.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/usr.sbin/syslogd/syslogd.c b/usr.sbin/syslogd/syslogd.c index f2d0874..c47dfa9 100644 --- a/usr.sbin/syslogd/syslogd.c +++ b/usr.sbin/syslogd/syslogd.c @@ -1338,7 +1338,12 @@ static void logerror(const char *type) { char buf[512]; + static int recursed = 0; + /* If there's an error while trying to log an error, give up. */ + if (recursed) + return; + recursed++; if (errno) (void)snprintf(buf, sizeof buf, "syslogd: %s: %s", type, strerror(errno)); @@ -1347,6 +1352,7 @@ logerror(const char *type) errno = 0; dprintf("%s\n", buf); logmsg(LOG_SYSLOG|LOG_ERR, buf, LocalHostName, ADDDATE); + recursed--; } static void |
