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Date: Mon, 20 May 2002 13:07:11 -0400
From: Greg Ames <gregames@apache.org>
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To: dev@httpd.apache.org
Subject: HEAD dies on FreeBSD w/mod_rewrite
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Greg Ames wrote:

> [Mon May 20 07:14:14 2002] [crit] (22)Invalid argument: mod_rewrite: Could not
> set permissions on rewrite_log_lock; check User and Group directives
> Configuration Failed

from apr.h:

#define APR_USE_FLOCK_SERIALIZE           1
#define APR_USE_SYSVSEM_SERIALIZE         0

(gdb) p *rewrite_log_lock.proc_mutex.meth
$13 = {flags = 1, create = 0x280e9cd0 <proc_mutex_flock_create>,
  acquire = 0x280e9d7c <proc_mutex_flock_acquire>, tryacquire = 0,
  release = 0x280e9dd4 <proc_mutex_flock_release>,
  destroy = 0x280e9e2c <proc_mutex_flock_destroy>,
  child_init = 0x280e9e70 <proc_mutex_flock_child_init>}
(gdb) bt
#0  unixd_set_proc_mutex_perms (pmutex=0x81299a8) at unixd.c:410
#1  0x807eaba in unixd_set_global_mutex_perms (gmutex=0x81299a0) at unixd.c:422
#2  0x2820a4da in post_config (p=0x809c010, plog=0x80c6010, ptemp=0x80c8010,
    s=0x80b8118) at mod_rewrite.c:968
#3  0x8065ba4 in ap_run_post_config (pconf=0x809c010, plog=0x80c6010,
    ptemp=0x80c8010, s=0x80b8118) at config.c:129
#4  0x806a973 in main (argc=3, argv=0xbfbffb74) at main.c:579

...so it looks like this lock is an flock, but we're trying to set permissions
on it as if it were a SysV sem. unixd_set_proc_mutex_perms() assumes it is only
called for SysV sems.  I'll take a look at the MPMs to see how they know the
difference.

Greg