arch/mips/include/uapi/asm/fcntl.h

Source file repositories/reference/linux-study-clean/arch/mips/include/uapi/asm/fcntl.h

File Facts

System
Linux kernel
Corpus path
arch/mips/include/uapi/asm/fcntl.h
Extension
.h
Size
2056 bytes
Lines
61
Domain
Architecture Layer
Bucket
arch/mips
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _UAPI_ASM_FCNTL_H
#define _UAPI_ASM_FCNTL_H

#include <asm/sgidefs.h>

#define O_APPEND	(1 << 3)
#define O_DSYNC		(1 << 4)	/* used to be O_SYNC, see below */
#define O_NONBLOCK	(1 << 7)
#define O_CREAT		(1 << 8)	/* not fcntl */
#define O_TRUNC		(1 << 9)	/* not fcntl */
#define O_EXCL		(1 << 10)	/* not fcntl */
#define O_NOCTTY	(1 << 11)	/* not fcntl */
#define FASYNC		(1 << 12)	/* fcntl, for BSD compatibility */
#define O_LARGEFILE	(1 << 13)	/* allow large file opens */
/*
 * 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	(1 << 14)
#define O_SYNC		(__O_SYNC|O_DSYNC)
#define O_DIRECT	(1 << 15)	/* direct disk access hint */

#define F_GETLK		14
#define F_SETLK		6
#define F_SETLKW	7

#define F_SETOWN	24	/*  for sockets. */
#define F_GETOWN	23	/*  for sockets. */

#if __BITS_PER_LONG == 32 || defined(__KERNEL__)
#define F_GETLK64	33	/*  using 'struct flock64' */
#define F_SETLK64	34
#define F_SETLKW64	35
#endif /* __BITS_PER_LONG == 32 || defined(__KERNEL__) */

#if _MIPS_SIM != _MIPS_SIM_ABI64
#define __ARCH_FLOCK_EXTRA_SYSID	long l_sysid;
#define __ARCH_FLOCK_PAD		long pad[4];
#endif

#include <asm-generic/fcntl.h>

#endif /* _UAPI_ASM_FCNTL_H */

Annotation

Implementation Notes