#sccs	"@(#)inchead:fcntl.h	1.3"
/*	Convergent Technologies - System V - May 1983	*/

#ifndef fcntl_h
#define fcntl_h

/* Flag values accessible to open(2) and fcntl(2) */
/*  (The first three can only be set by open) */
#define	O_RDONLY 0
#define	O_WRONLY 1
#define	O_RDWR	 2
#define	O_NDELAY 04	/* Non-blocking I/O */
#define	O_APPEND 010	/* append (writes guaranteed at the end) */
#define O_DIRECT 0100000 /* Direct I/O */

/* Flag values accessible only to open(2) */
#define	O_CREAT	00400	/* open with file create (uses third open arg)*/
#define	O_TRUNC	01000	/* open with truncation */
#define	O_EXCL	02000	/* exclusive open */

/* fcntl(2) requests */
#define	F_DUPFD	0	/* Duplicate fildes */
#define	F_GETFD	1	/* Get fildes flags */
#define	F_SETFD	2	/* Set fildes flags */
#define	F_GETFL	3	/* Get file flags */
#define	F_SETFL	4	/* Set file flags */
#define	F_GETLK 5	/* Get file lock */
#define	F_SETLK 6	/* Set file lock */
#define	F_SETLKW 7	/* Set file lock and wait */

/* file segment locking set data type - information passed to system by user */
struct flock {
	short	l_type;
	short	l_whence;
	long	l_start;
	long	l_len;		/* len = 0 means until end of file */
	int	l_pid;
};

#define	F_RDLCK	01
#define	F_WRLCK	02
#define	F_UNLCK	03

#endif fcntl_h