#ifndef _SYS_FILE_H_
#define _SYS_FILE_H_


#ifdef __cplusplus
extern "C"
{
#endif


#define LOCK_SH	1
#define LOCK_EX	2
#define LOCK_NB	4
#define LOCK_UN	8



  extern int flock (int, int);
#ifdef __cplusplus
}
#endif
#endif
