1. 根目录:
2. arch
3. sparc
4. include
5. uapi
6. asm
7. fcntl.h

#ifndef _SPARC_FCNTL_H
#define _SPARC_FCNTL_H

#define O_APPEND	0x0008
#define FASYNC		0x0040	/* fcntl, for BSD compatibility */
#define O_CREAT		0x0200	/* not fcntl */
#define O_TRUNC		0x0400	/* not fcntl */
#define O_EXCL		0x0800	/* not fcntl */
#define O_DSYNC		0x2000	/* used to be O_SYNC, see below */
#define O_NONBLOCK	0x4000
#if defined(__sparc__) && defined(__arch64__)
#define O_NDELAY	0x0004
#else
#define O_NDELAY	(0x0004 | O_NONBLOCK)
#endif
#define O_NOCTTY	0x8000	/* not fcntl */
#define O_LARGEFILE	0x40000
#define O_DIRECT        0x100000 /* direct disk access hint */
#define O_NOATIME	0x200000
#define O_CLOEXEC	0x400000
/*
 * Before Linux 2.6.33 only O_DSYNC semantics were implemented, but using
 * the O_SYNC flag.  We continue to use the existing numerical value
 * for O_DSYNC semantics now, but using the correct symbolic name for it.
 * This new value is used to request true Posix O_SYNC semantics.  It is
 * defined in this strange way to make sure applications compiled against
 * new headers get at least O_DSYNC semantics on older kernels.
 *
 * This has the nice side-effect that we can simply test for O_DSYNC
 * wherever we do not care if O_DSYNC or O_SYNC is used.
 *
 * Note: __O_SYNC must never be used directly.
 */
#define __O_SYNC	0x800000
#define O_SYNC		(__O_SYNC|O_DSYNC)

#define O_PATH		0x1000000
#define __O_TMPFILE	0x2000000

#define F_GETOWN	5	/*  for sockets. */
#define F_SETOWN	6	/*  for sockets. */
#define F_GETLK		7
#define F_SETLK		8
#define F_SETLKW	9

/* for posix fcntl() and lockf() */
#define F_RDLCK		1
#define F_WRLCK		2
#define F_UNLCK		3

#define __ARCH_FLOCK_PAD	short __unused;
#define __ARCH_FLOCK64_PAD	short __unused;

#include <asm-generic/fcntl.h>

#endif