46 #define _EXT(fp) ((struct __sfileext *)((fp)->_ext._base))  argument
47 #define _UB(fp) _EXT(fp)->_ub  argument
48 #define _FLOCK(fp)  _EXT(fp)->_lock  argument
50 #define _FILEEXT_INIT(fp) \  argument
52 	_UB(fp)._base = NULL; \
53 	_UB(fp)._size = 0; \
54 	WCIO_INIT(fp); \
55 	_FLOCK_INIT(fp); \
62 #define _FLOCK_INIT(fp)    _FLOCK(fp).value = __PTHREAD_RECURSIVE_MUTEX_INIT_VALUE  argument
63 #define _FLOCK_LOCK(fp)    pthread_mutex_lock(&_FLOCK(fp))  argument
64 #define _FLOCK_TRYLOCK(fp) pthread_mutex_trylock(&_FLOCK(fp))  argument
65 #define _FLOCK_UNLOCK(fp)  pthread_mutex_unlock(&_FLOCK(fp))  argument