/*
Copyright (c) 1993 Xerox Corporation.  All rights reserved.
*/
/*
 */

#ifndef	__XR_fcntl_h
#define	__XR_fcntl_h

#include <config/PCR_OS.h>

#define XR_O_RDONLY	0
#define XR_O_WRONLY	1
#define	XR_O_RDWR	2

#define	XR_O_APPEND	0x0008
#define	XR_O_CREAT	0x0200
#define	XR_O_TRUNC	0x0400
#define	XR_O_EXCL	0x0800
#define	XR_O_NOCTTY	0x8000
#define XR_O_NONBLOCK	0x4000

#define	XR_O_ACCMODE	0x3

/* close on exec request */
#define	XR_FD_CLOEXEC	1

/* fcntl(2) requests */
#define	XR_F_DUPFD	0	/* Duplicate fildes */
#define	XR_F_GETFD	1	/* Get fildes flags (close on exec) */
#define	XR_F_SETFD	2	/* Set fildes flags (close on exec) */
#define	XR_F_GETFL	3	/* Get file flags */
#define	XR_F_SETFL	4	/* Set file flags */
#define	XR_F_GETOWN 	5	/* Get owner - for ASYNC */
#define	XR_F_SETOWN 	6	/* Set owner - for ASYNC */
#define	XR_F_GETLK  	7	/* Get record-locking information */
#define	XR_F_SETLK  	8	/* Set or Clear a record-lock (Non-Blocking) */
#define	XR_F_SETLKW 	9	/* Set or Clear a record-lock (Blocking) */

/* fcntl(2) flags (l_type field of flock structure) */
#define	XR_F_RDLCK		1	/* read lock */
#define	XR_F_WRLCK		2	/* write lock */
#define	XR_F_UNLCK		3	/* remove lock(s) */

struct XR_flock {
	short	l_type;		/* F_RDLCK, F_WRLCK, or F_UNLCK */
	short	l_whence;	/* flag to choose starting offset */
	long	l_start;	/* relative offset, in bytes */
	long	l_len;		/* length, in bytes; 0 means lock to EOF */
	short	l_pid;		/* returned with F_GETLK */
	short	l_xxx;		/* reserved for future use */
};

#if defined(PCR_OS_SUNOS4)

#   include <fcntl.h>

#   define XR_fcntl_CmdToHost(cmd) (cmd)
#   define XR_fcntl_FlagToHost(flag) (flag)
#   define XR_fcntl_FlagFromHost(flag) (flag)
#   define XR_fcntl_FDToHost(fd) (fd)
#   define XR_fcntl_FDFromHost(fd) (fd)

extern void XR_fcntl_FLockToHost(struct flock *hfl, struct XR_flock *xfl);
extern void XR_fcntl_FLockFromHost(struct XR_flock *xfl, struct flock *hfl);

#elif defined(PCR_OS_SUNOS5)

#   include <fcntl.h>

extern int XR_fcntl_CmdToHost(int cmd);
extern int XR_fcntl_FlagToHost(int flag);
extern int XR_fcntl_FlagFromHost(int flag);
extern int XR_fcntl_FDToHost(int fd);
extern int XR_fcntl_FDFromHost(int fd);

extern void XR_fcntl_FLockToHost(struct flock *hfl, struct XR_flock *xfl);
extern void XR_fcntl_FLockFromHost(struct XR_flock *xfl, struct flock *hfl);

#else

#   error os ?

#endif

#endif	/* !__XR_fcntl_h */