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/*
* Copyright (c) 2002-2005, Network Appliance, Inc. All rights reserved.
*
* This Software is licensed under one of the following licenses:
*
* 1) under the terms of the "Common Public License 1.0" a copy of which is
* in the file LICENSE.txt in the root directory. The license is also
* available from the Open Source Initiative, see
* http://www.opensource.org/licenses/cpl.php.
*
* 2) under the terms of the "The BSD License" a copy of which is in the file
* LICENSE2.txt in the root directory. The license is also available from
* the Open Source Initiative, see
* http://www.opensource.org/licenses/bsd-license.php.
*
* 3) under the terms of the "GNU General Public License (GPL) Version 2" a
* copy of which is in the file LICENSE3.txt in the root directory. The
* license is also available from the Open Source Initiative, see
* http://www.opensource.org/licenses/gpl-license.php.
*
* Licensee has the right to choose one of the above licenses.
*
* Redistributions of source code must retain the above copyright
* notice and one of the license notices.
*
* Redistributions in binary form must reproduce both the above copyright
* notice, one of the license notices in the documentation
* and/or other materials provided with the distribution.
*/
/**********************************************************************
*
* MODULE: dat_osd.c
*
* PURPOSE: Operating System Dependent layer
* Description:
* Provide OS dependent functions with a canonical DAPL
* interface. Designed to be portable and hide OS specific quirks
* of common functions.
*
* $Id: dat_osd.c,v 1.14 2005/04/25 17:29:41 jlentini Exp $
**********************************************************************/
#include "dat_osd.h"
/*********************************************************************
* *
* Constants *
* *
*********************************************************************/
#define DAT_DBG_TYPE_ENV "DAT_DBG_TYPE"
#define DAT_DBG_DEST_ENV "DAT_DBG_DEST"
/*********************************************************************
* *
* Enumerations *
* *
*********************************************************************/
typedef int DAT_OS_DBG_DEST;
typedef enum
{
DAT_OS_DBG_DEST_STDOUT = 0x1,
DAT_OS_DBG_DEST_SYSLOG = 0x2,
DAT_OS_DBG_DEST_ALL = 0x3
} DAT_OS_DBG_DEST_TYPE;
/*********************************************************************
* *
* Global Variables *
* *
*********************************************************************/
static DAT_OS_DBG_TYPE_VAL g_dbg_type = DAT_OS_DBG_TYPE_ERROR;
static DAT_OS_DBG_DEST g_dbg_dest = DAT_OS_DBG_DEST_STDOUT;
/***********************************************************************
* Function: dat_os_dbg_init
***********************************************************************/
void
dat_os_dbg_init ( void )
{
char *dbg_type;
char *dbg_dest;
if ( NULL != (dbg_type = dat_os_getenv (DAT_DBG_TYPE_ENV)) )
{
g_dbg_type = dat_os_strtol (dbg_type, NULL, 0);
}
if ( NULL != (dbg_dest = dat_os_getenv (DAT_DBG_DEST_ENV)) )
{
g_dbg_dest = dat_os_strtol (dbg_dest, NULL, 0);
}
}
/***********************************************************************
* Function: dat_os_dbg_print
***********************************************************************/
void
dat_os_dbg_print (
DAT_OS_DBG_TYPE_VAL type,
const char * fmt,
...)
{
if (type & g_dbg_type)
{
va_list args;
if ( DAT_OS_DBG_DEST_STDOUT & g_dbg_dest )
{
va_start (args, fmt);
vfprintf (stdout, fmt, args);
fflush (stdout);
va_end (args);
}
if ( DAT_OS_DBG_DEST_SYSLOG & g_dbg_dest )
{
va_start (args, fmt);
vsyslog (LOG_USER | LOG_DEBUG, fmt, args);
va_end (args);
}
}
}
/***********************************************************************
* Function: dat_os_library_load
***********************************************************************/
DAT_RETURN
dat_os_library_load (
const char *library_path,
DAT_OS_LIBRARY_HANDLE *library_handle_ptr)
{
DAT_OS_LIBRARY_HANDLE library_handle;
if ( NULL != (library_handle = dlopen (library_path, RTLD_NOW | RTLD_GLOBAL)) )
{
if ( NULL != library_handle_ptr )
{
*library_handle_ptr = library_handle;
}
return DAT_SUCCESS;
}
else
{
dat_os_dbg_print (DAT_OS_DBG_TYPE_ERROR,
"DAT: library load failure: %s\n",
dlerror ());
return DAT_INTERNAL_ERROR;
}
}
/***********************************************************************
* Function: dat_os_library_unload
***********************************************************************/
DAT_RETURN
dat_os_library_unload (
const DAT_OS_LIBRARY_HANDLE library_handle)
{
if ( 0 != dlclose (library_handle) )
{
return DAT_INTERNAL_ERROR;
}
else
{
return DAT_SUCCESS;
}
}
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