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From Ron Newman <rnew...@thecia.net>
Subject general/4934: LoadModule "loaded module %s" message never written to log file, regardless of LogLevel
Date Mon, 30 Aug 1999 22:38:13 GMT

>Number:         4934
>Category:       general
>Synopsis:       LoadModule "loaded module %s" message never written to log file, regardless
of LogLevel
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Mon Aug 30 15:40:00 PDT 1999
>Last-Modified:
>Originator:     rnewman@thecia.net
>Organization:
apache
>Release:        1.3.9
>Environment:
SunOS joplin 5.6 Generic_105181-10 sun4u sparc SUNW,Ultra-5_10
using GCC
>Description:
Although load_module() [in file mod_so.c] is calling 
  ap_log_error(..., APLOG_DEBUG|APLOG_NOERROR, NULL, "loaded module %s", ...) 
the log message never appears in the actual "error_log" file.

This is because load_module() is passing a NULL server_rec * pointer to 
ap_log_error() [in file http_log.c].  ap_log_error() calls log_error_core() which 
does the following:

    if (s == NULL) {
	/*
	 * If we are doing stderr logging (startup), don't log messages that are
	 * above the default server log level unless it is a startup/shutdown
	 * notice
	 */
	if (((level & APLOG_LEVELMASK) != APLOG_NOTICE) &&
	    ((level & APLOG_LEVELMASK) > DEFAULT_LOGLEVEL))
	    return;

Since DEFAULT_LOGLEVEL is defined [in http_log.h] to be APLOG_WARNING (== 4),
and we're calling log_error_core() with s==NULL and level==APLOG_DEBUG(== 7),
log_error_core() returns immediately without actually logging the message.
>How-To-Repeat:
Put these lines into httpd.conf (in this order):

LogLevel debug
LoadModule hello_module libexec/mod_hello.so

[where mod_hello.so is the one supplied with the O'Reilly "Writing Apache Modules" book]

>Fix:

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