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#ifndef __LOCKF_H
#define __LOCKF_H
#include "sys.h"
#if !defined HAVE_LOCKF
/* Drop-in replacement for the simplified lockf interface (POSIX) */
#include <fcntl.h> /* for fcntl and locking flags */
#define F_ULOCK 0 /* Unlock a previously locked region */
#define F_LOCK 1 /* Lock exclusively */
#define F_TLOCK 2 /* Test and lock exclusively */
#define F_TEST 3 /* Test for a locked region */
extern int lockf( int fd, int cmd, off_t len );
#endif /* !defined HAVE_LOCKF */
#endif /* ifndef __LOCKF_H */
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