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| System | : | Linux MiraNet 3.0.0-14-generic-pae #23-Ubuntu SMP Mon Nov 21 22:07:10 UTC 2011 i686 |
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/
usr/
src/
httpd-2.4.6/
modules/
ssl/
- drwxr-xr-x
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Viewing file:  ssl_engine_mutex.c (3.61 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* _ _
* _ __ ___ ___ __| | ___ ___| | mod_ssl
* | '_ ` _ \ / _ \ / _` | / __/ __| | Apache Interface to OpenSSL
* | | | | | | (_) | (_| | \__ \__ \ |
* |_| |_| |_|\___/ \__,_|___|___/___/_|
* |_____|
* ssl_engine_mutex.c
* Semaphore for Mutual Exclusion
*/
/* ``Real programmers confuse
Christmas and Halloween
because DEC 25 = OCT 31.''
-- Unknown */
#include "ssl_private.h"
int ssl_mutex_init(server_rec *s, apr_pool_t *p)
{
SSLModConfigRec *mc = myModConfig(s);
apr_status_t rv;
/* A mutex is only needed if a session cache is configured, and
* the provider used is not internally multi-process/thread
* safe. */
if (!mc->sesscache
|| (mc->sesscache->flags & AP_SOCACHE_FLAG_NOTMPSAFE) == 0) {
return TRUE;
}
if (mc->pMutex) {
return TRUE;
}
if ((rv = ap_global_mutex_create(&mc->pMutex, NULL, SSL_CACHE_MUTEX_TYPE,
NULL, s, s->process->pool, 0))
!= APR_SUCCESS) {
return FALSE;
}
return TRUE;
}
int ssl_mutex_reinit(server_rec *s, apr_pool_t *p)
{
SSLModConfigRec *mc = myModConfig(s);
apr_status_t rv;
const char *lockfile;
if (mc->pMutex == NULL || !mc->sesscache
|| (mc->sesscache->flags & AP_SOCACHE_FLAG_NOTMPSAFE) == 0) {
return TRUE;
}
lockfile = apr_global_mutex_lockfile(mc->pMutex);
if ((rv = apr_global_mutex_child_init(&mc->pMutex,
lockfile,
p)) != APR_SUCCESS) {
if (lockfile)
ap_log_error(APLOG_MARK, APLOG_ERR, rv, s, APLOGNO(02024)
"Cannot reinit %s mutex with file `%s'",
SSL_CACHE_MUTEX_TYPE, lockfile);
else
ap_log_error(APLOG_MARK, APLOG_WARNING, rv, s, APLOGNO(02025)
"Cannot reinit %s mutex", SSL_CACHE_MUTEX_TYPE);
return FALSE;
}
return TRUE;
}
int ssl_mutex_on(server_rec *s)
{
SSLModConfigRec *mc = myModConfig(s);
apr_status_t rv;
if ((rv = apr_global_mutex_lock(mc->pMutex)) != APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_WARNING, rv, s, APLOGNO(02026)
"Failed to acquire SSL session cache lock");
return FALSE;
}
return TRUE;
}
int ssl_mutex_off(server_rec *s)
{
SSLModConfigRec *mc = myModConfig(s);
apr_status_t rv;
if ((rv = apr_global_mutex_unlock(mc->pMutex)) != APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_WARNING, rv, s, APLOGNO(02027)
"Failed to release SSL session cache lock");
return FALSE;
}
return TRUE;
}
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