support.h revision 7e7bd3dccbfe8f79e25e5c1554b5bc3a9aaca321
/*
* support.h - Various useful things. Part of the Linux-NTFS project.
*
* Copyright (c) 2000-2004 Anton Altaparmakov
* Copyright (c) 2006 Szabolcs Szakacsits
* Copyright (c) 2006 Yura Pakhuchiy
*
* 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.
*
* 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 (in the main directory of the Linux-NTFS
* distribution in the file COPYING); if not, write to the Free Software
* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _NTFS_SUPPORT_H
#define _NTFS_SUPPORT_H
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include "logging.h"
/*
* Our mailing list. Use this define to prevent typos in email address.
*/
#define NTFS_DEV_LIST "linux-ntfs-dev@lists.sf.net"
/*
* Generic macro to convert pointers to values for comparison purposes.
*/
#ifndef p2n
#endif
/*
* The classic min and max macros.
*/
#ifndef min
#define min(a,b) ((a) <= (b) ? (a) : (b))
#endif
#ifndef max
#define max(a,b) ((a) >= (b) ? (a) : (b))
#endif
/*
* Useful macro for determining the offset of a struct member.
*/
#ifndef offsetof
#endif
/*
* Round up and down @num to 2 in power of @order.
*/
/*
* Simple bit operation macros. NOTE: These are NOT atomic.
*/
#ifdef __sun
{
return old_state;
}
{
return old_state;
}
#else /* !__sun */
({ \
old_state; \
})
({ \
old_state; \
})
#endif /* __sun */
/* Memory allocation with logging. */
#endif /* defined _NTFS_SUPPORT_H */