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/* modules.c
* This is the implementation of syslogd modules object.
* This object handles plug-ins and buil-in modules of all kind.
*
* File begun on 2007-07-22 by RGerhards
*
* Copyright 2007 Rainer Gerhards and Adiscon GmbH.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* A copy of the GPL can be found in the file "COPYING" in this distribution.
*/
#include "config.h"
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <assert.h>
#include <errno.h>
#include <unistd.h>
#include <sys/file.h>
#include "rsyslog.h"
#include "modules.h"
static modInfo_t *pLoadedModules = NULL; /* list of currently-loaded modules */
static modInfo_t *pLoadedModulesLast = NULL; /* tail-pointer */
/* Construct a new module object
*/
static rsRetVal moduleConstruct(modInfo_t **pThis)
{
modInfo_t *pNew;
if((pNew = calloc(1, sizeof(modInfo_t))) == NULL)
return RS_RET_OUT_OF_MEMORY;
/* OK, we got the element, now initialize members that should
* not be zero-filled.
*/
*pThis = pNew;
return RS_RET_OK;
}
/* Add a module to the loaded module linked list
*/
static inline void addModToList(modInfo_t *pThis)
{
assert(pThis != NULL);
if(pLoadedModules == NULL) {
pLoadedModules = pLoadedModulesLast = pThis;
} else {
/* there already exist entries */
pLoadedModulesLast->pNext = pThis;
pLoadedModulesLast = pThis;
}
}
/* Add an already-loaded module to the module linked list. This function does
* anything that is needed to fully initialize the module.
*/
rsRetVal doModInit(rsRetVal *doInit(), uchar *name)
{
modInfo_t *pNew;
rsRetVal iRet;
if((iRet = moduleConstruct(&pNew)) != RS_RET_OK)
return iRet;
if((iRet = *doInit()) != RS_RET_OK)
return iRet;
/* OK, we know we can successfully work with the module. So we now fill the
* rest of the data elements.
*/
pNew->pszModName = (uchar*) strdup((char*)name); /* we do not care if strdup() fails, we can accept that */
return RS_RET_OK;
}
/*
* vi:set ai:
*/
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