fcntl.h

#ifndef _I386_FCNTL_H
#define _I386_FCNTL_H

/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
located on an ext2 file system */
#define O_ACCMODE 0003
#define O_RDONLY 00
#define O_WRONLY 01
#define O_RDWR 02
#define O_CREAT 0100 /* not fcntl */
#define O_EXCL 0200 /* not fcntl */
#define O_NOCTTY 0400 /* not fcntl */
#define O_TRUNC 01000 /* not fcntl */
#define O_APPEND 02000
#define O_NONBLOCK 04000
#define O_NDELAY O_NONBLOCK
#define O_SYNC 010000
#define FASYNC 020000 /* fcntl, for BSD compatibility */

#define F_DUPFD 0 /* dup */
#define F_GETFD 1 /* get f_flags */
#define F_SETFD 2 /* set f_flags */
#define F_GETFL 3 /* more flags (cloexec) */
#define F_SETFL 4
#define F_GETLK 5
#define F_SETLK 6
#define F_SETLKW 7

#define F_SETOWN 8 /* for sockets. */
#define F_GETOWN 9 /* for sockets. */

/* for F_[GET|SET]FL */
#define FD_CLOEXEC 1 /* actually anything with low bit set goes */

/* for posix fcntl() and lockf() */
#define F_RDLCK 0
#define F_WRLCK 1
#define F_UNLCK 2

/* for old implementation of bsd flock () */
#define F_EXLCK 4 /* or 3 */
#define F_SHLCK 8 /* or 4 */

/* operations for bsd flock(), also used by the kernel implementation */
#define LOCK_SH 1 /* shared lock */
#define LOCK_EX 2 /* exclusive lock */
#define LOCK_NB 4 /* or'd with one of the above to prevent
blocking */
#define LOCK_UN 8 /* remove lock */

#ifdef __KERNEL__
#define F_POSIX 1
#define F_FLOCK 2
#define F_BROKEN 4 /* broken flock() emulation */
#endif /* __KERNEL__ */

struct flock {
short l_type;
short l_whence;
off_t l_start;
off_t l_len;
pid_t l_pid;
};

#endif