[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / arm / bits / fcntl.h

/* O_*, F_*, FD_* bit values for Linux.
   Copyright (C) 1995-1998, 2000, 2004, 2006, 2007, 2009, 2010, 2011
   Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library.  If not, see
   <http://www.gnu.org/licenses/>.  */

#ifndef	_FCNTL_H
# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
#endif

#include <sys/types.h>
#ifdef __USE_GNU
# include <bits/uio.h>
#endif


/* 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	       04010000
#define O_FSYNC		 O_SYNC
#define O_ASYNC		 020000

#ifdef __USE_XOPEN2K8
# define O_DIRECTORY	 040000	/* Must be a directory.	 */
# define O_NOFOLLOW	0100000	/* Do not follow links.	 */
# define O_CLOEXEC     02000000 /* Set close_on_exec.  */
#endif
#ifdef __USE_GNU
# define O_DIRECT	0200000	/* Direct disk access.	*/
# define O_NOATIME     01000000 /* Do not set atime.  */
# define O_PATH	      010000000 /* Resolve pathname but do not open file.  */
#endif

/* For now Linux has synchronisity options for data and read operations.
   We define the symbols here but let them do the same as O_SYNC since
   this is a superset.	*/
#if defined __USE_POSIX199309 || defined __USE_UNIX98
# define O_DSYNC	010000	/* Synchronize data.  */
# define O_RSYNC	O_SYNC	/* Synchronize read operations.	 */
#endif

#ifdef __USE_LARGEFILE64
# define O_LARGEFILE	0400000
#endif

/* Values for the second argument to `fcntl'.  */
#define F_DUPFD		0	/* Duplicate file descriptor.  */
#define F_GETFD		1	/* Get file descriptor flags.  */
#define F_SETFD		2	/* Set file descriptor flags.  */
#define F_GETFL		3	/* Get file status flags.  */
#define F_SETFL		4	/* Set file status flags.  */
#ifndef __USE_FILE_OFFSET64
# define F_GETLK	5	/* Get record locking info.  */
# define F_SETLK	6	/* Set record locking info (non-blocking).  */
# define F_SETLKW	7	/* Set record locking info (blocking).	*/
#else
# define F_GETLK	F_GETLK64  /* Get record locking info.	*/
# define F_SETLK	F_SETLK64  /* Set record locking info (non-blocking).*/
# define F_SETLKW	F_SETLKW64 /* Set record locking info (blocking).  */
#endif
#define F_GETLK64	12	/* Get record locking info.  */
#define F_SETLK64	13	/* Set record locking info (non-blocking).  */
#define F_SETLKW64	14	/* Set record locking info (blocking).	*/

#if defined __USE_BSD || defined __USE_UNIX98 || defined __USE_XOPEN2K8
# define F_SETOWN	8	/* Get owner (process receiving SIGIO).  */
# define F_GETOWN	9	/* Set owner (process receiving SIGIO).  */
#endif

#ifdef __USE_GNU
# define F_SETSIG	10	/* Set number of signal to be sent.  */
# define F_GETSIG	11	/* Get number of signal to be sent.  */
# define F_SETOWN_EX	15	/* Get owner (thread receiving SIGIO).  */
# define F_GETOWN_EX	16	/* Set owner (thread receiving SIGIO).  */
#endif

#ifdef __USE_GNU
# define F_SETLEASE	1024	/* Set a lease.	 */
# define F_GETLEASE	1025	/* Enquire what lease is active.  */
# define F_NOTIFY	1026	/* Request notfications on a directory.	 */
# define F_SETPIPE_SZ	1031	/* Set pipe page size array.  */
# define F_GETPIPE_SZ	1032	/* Set pipe page size array.  */
#endif
#ifdef __USE_XOPEN2K8
# define F_DUPFD_CLOEXEC 1030	/* Duplicate file descriptor with
				   close-on-exit set.  */
#endif

/* For F_[GET|SET]FD.  */
#define FD_CLOEXEC	1	/* actually anything with low bit set goes */

/* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
#define F_RDLCK		0	/* Read lock.  */
#define F_WRLCK		1	/* Write lock.	*/
#define F_UNLCK		2	/* Remove lock.	 */

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

#ifdef __USE_BSD
/* 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 */
#endif

#ifdef __USE_GNU
# define LOCK_MAND	32	/* This is a mandatory flock:	*/
# define LOCK_READ	64	/* ... which allows concurrent read operations.	 */
# define LOCK_WRITE	128	/* ... which allows concurrent write operations.  */
# define LOCK_RW	192	/* ... Which allows concurrent read & write operations.	 */
#endif

#ifdef __USE_GNU
/* Types of directory notifications that may be requested with F_NOTIFY.  */
# define DN_ACCESS	0x00000001	/* File accessed.  */
# define DN_MODIFY	0x00000002	/* File modified.  */
# define DN_CREATE	0x00000004	/* File created.  */
# define DN_DELETE	0x00000008	/* File removed.  */
# define DN_RENAME	0x00000010	/* File renamed.  */
# define DN_ATTRIB	0x00000020	/* File changed attibutes.  */
# define DN_MULTISHOT	0x80000000	/* Don't remove notifier.  */
#endif

struct flock
  {
    short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.	*/
    short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
#ifndef __USE_FILE_OFFSET64
    __off_t l_start;	/* Offset where the lock begins.  */
    __off_t l_len;	/* Size of the locked area; zero means until EOF.  */
#else
    __off64_t l_start;	/* Offset where the lock begins.  */
    __off64_t l_len;	/* Size of the locked area; zero means until EOF.  */
#endif
    __pid_t l_pid;	/* Process holding the lock.  */
  };

#ifdef __USE_LARGEFILE64
struct flock64
  {
    short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.	*/
    short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
    __off64_t l_start;	/* Offset where the lock begins.  */
    __off64_t l_len;	/* Size of the locked area; zero means until EOF.  */
    __pid_t l_pid;	/* Process holding the lock.  */
  };
#endif

#ifdef __USE_GNU
/* Owner types.  */
enum __pid_type
  {
    F_OWNER_TID = 0,		/* Kernel thread.  */
    F_OWNER_PID,		/* Process.  */
    F_OWNER_PGRP,		/* Process group.  */
    F_OWNER_GID = F_OWNER_PGRP	/* Alternative, obsolete name.  */
  };

/* Structure to use with F_GETOWN_EX and F_SETOWN_EX.  */
struct f_owner_ex
  {
    enum __pid_type type;	/* Owner type of ID.  */
    __pid_t pid;		/* ID of owner.  */
  };
#endif

/* Define some more compatibility macros to be backward compatible with
   BSD systems which did not managed to hide these kernel macros.  */
#ifdef	__USE_BSD
# define FAPPEND	O_APPEND
# define FFSYNC		O_FSYNC
# define FASYNC		O_ASYNC
# define FNONBLOCK	O_NONBLOCK
# define FNDELAY	O_NDELAY
#endif /* Use BSD.  */

/* Advise to `posix_fadvise'.  */
#ifdef __USE_XOPEN2K
# define POSIX_FADV_NORMAL	0 /* No further special treatment.  */
# define POSIX_FADV_RANDOM	1 /* Expect random page references.  */
# define POSIX_FADV_SEQUENTIAL	2 /* Expect sequential page references.	 */
# define POSIX_FADV_WILLNEED	3 /* Will need these pages.  */
# define POSIX_FADV_DONTNEED	4 /* Don't need these pages.  */
# define POSIX_FADV_NOREUSE	5 /* Data will be accessed once.  */
#endif


#ifdef __USE_GNU
/* Flags for SYNC_FILE_RANGE.  */
# define SYNC_FILE_RANGE_WAIT_BEFORE	1 /* Wait upon writeout of all pages
					     in the range before performing the
					     write.  */
# define SYNC_FILE_RANGE_WRITE		2 /* Initiate writeout of all those
					     dirty pages in the range which are
					     not presently under writeback.  */
# define SYNC_FILE_RANGE_WAIT_AFTER	4 /* Wait upon writeout of all pages in
					     the range after performing the
					     write.  */

/* Flags for SPLICE and VMSPLICE.  */
# define SPLICE_F_MOVE		1	/* Move pages instead of copying.  */
# define SPLICE_F_NONBLOCK	2	/* Don't block on the pipe splicing
					   (but we may still block on the fd
					   we splice from/to).  */
# define SPLICE_F_MORE		4	/* Expect more data.  */
# define SPLICE_F_GIFT		8	/* Pages passed in are a gift.  */


/* File handle structure.  */
struct file_handle
{
  unsigned int handle_bytes;
  int handle_type;
  /* File identifier.  */
  unsigned char f_handle[0];
};

/* Maximum handle size (for now).  */
# define MAX_HANDLE_SZ	128
#endif

__BEGIN_DECLS

#ifdef __USE_GNU

/* Provide kernel hint to read ahead.  */
extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
    __THROW;


/* Selective file content synch'ing.  */
extern int sync_file_range (int __fd, __off64_t __offset, __off64_t __count,
			    unsigned int __flags);


/* Splice address range into a pipe.

   This function is a possible cancellation point and therefore not
   marked with __THROW.  */
extern ssize_t vmsplice (int __fdout, const struct iovec *__iov,
			 size_t __count, unsigned int __flags);

/* Splice two files together.

   This function is a possible cancellation point and therefore not
   marked with __THROW.  */
extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout,
		       __off64_t *__offout, size_t __len,
		       unsigned int __flags);

/* In-kernel implementation of tee for pipe buffers.

   This function is a possible cancellation point and therefore not
   marked with __THROW.  */
extern ssize_t tee (int __fdin, int __fdout, size_t __len,
		    unsigned int __flags);

/* Reserve storage for the data of the file associated with FD.

   This function is a possible cancellation point and therefore not
   marked with __THROW.  */
# ifndef __USE_FILE_OFFSET64
extern int fallocate (int __fd, int __mode, __off_t __offset, __off_t __len);
# else
#  ifdef __REDIRECT
extern int __REDIRECT (fallocate, (int __fd, int __mode, __off64_t __offset,
				   __off64_t __len),
		       fallocate64);
#  else
#   define fallocate fallocate64
#  endif
# endif
# ifdef __USE_LARGEFILE64
extern int fallocate64 (int __fd, int __mode, __off64_t __offset,
			__off64_t __len);
# endif


/* Map file name to file handle.  */
extern int name_to_handle_at (int __dfd, const char *__name,
			      struct file_handle *__handle, int *__mnt_id,
			      int __flags) __THROW;

/* Open file using the file handle.

   This function is a possible cancellation point and therefore not
   marked with __THROW.  */
extern int open_by_handle_at (int __mountdirfd, struct file_handle *__handle,
			      int __flags);

#endif

__END_DECLS
Commit	Line	Data
69a93556	1	/* O_, F_, FD_* bit values for Linux.
82be5f39	2	Copyright (C) 1995-1998, 2000, 2004, 2006, 2007, 2009, 2010, 2011
713ddf8d	3	Free Software Foundation, Inc.
69a93556 UD	4	This file is part of the GNU C Library.
	5
	6	The GNU C Library is free software; you can redistribute it and/or
3214b89b AJ	7	modify it under the terms of the GNU Lesser General Public
	8	License as published by the Free Software Foundation; either
	9	version 2.1 of the License, or (at your option) any later version.
69a93556 UD	10
	11	The GNU C Library is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
3214b89b AJ	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
3214b89b AJ	14	Lesser General Public License for more details.
69a93556	15
3214b89b	16	You should have received a copy of the GNU Lesser General Public
ab84e3ff PE	17	License along with the GNU C Library. If not, see
ab84e3ff PE	18	<http://www.gnu.org/licenses/>. */
69a93556 UD	19
	20	#ifndef _FCNTL_H
	21	# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
	22	#endif
	23
69a93556	24	#include <sys/types.h>
142b51e4 DJ	25	#ifdef __USE_GNU
	26	# include <bits/uio.h>
	27	#endif
69a93556	28
b395a209	29
69a93556 UD	30	/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
69a93556 UD	31	located on an ext2 file system */
b395a209 DJ	32	#define O_ACCMODE 0003
	33	#define O_RDONLY 00
	34	#define O_WRONLY 01
	35	#define O_RDWR 02
	36	#define O_CREAT 0100 /* not fcntl */
	37	#define O_EXCL 0200 /* not fcntl */
	38	#define O_NOCTTY 0400 /* not fcntl */
	39	#define O_TRUNC 01000 /* not fcntl */
	40	#define O_APPEND 02000
	41	#define O_NONBLOCK 04000
69a93556	42	#define O_NDELAY O_NONBLOCK
4d0f4f9f	43	#define O_SYNC 04010000
b395a209 DJ	44	#define O_FSYNC O_SYNC
b395a209 DJ	45	#define O_ASYNC 020000
69a93556	46
0549913f	47	#ifdef __USE_XOPEN2K8
b395a209	48	# define O_DIRECTORY 040000 /* Must be a directory. */
5e9880e0	49	# define O_NOFOLLOW 0100000 /* Do not follow links. */
0549913f JM	50	# define O_CLOEXEC 02000000 /* Set close_on_exec. */
	51	#endif
	52	#ifdef __USE_GNU
5e9880e0	53	# define O_DIRECT 0200000 /* Direct disk access. */
b395a209	54	# define O_NOATIME 01000000 /* Do not set atime. */
adb252da	55	# define O_PATH 010000000 /* Resolve pathname but do not open file. */
69a93556 UD	56	#endif
	57
	58	/* For now Linux has synchronisity options for data and read operations.
	59	We define the symbols here but let them do the same as O_SYNC since
5e9880e0	60	this is a superset. */
69a93556	61	#if defined __USE_POSIX199309 \|\| defined __USE_UNIX98
4d0f4f9f	62	# define O_DSYNC 010000 /* Synchronize data. */
5e9880e0	63	# define O_RSYNC O_SYNC /* Synchronize read operations. */
69a93556 UD	64	#endif
69a93556 UD	65
b395a209 DJ	66	#ifdef __USE_LARGEFILE64
	67	# define O_LARGEFILE 0400000
	68	#endif
	69
69a93556 UD	70	/* Values for the second argument to `fcntl'. */
	71	#define F_DUPFD 0 /* Duplicate file descriptor. */
	72	#define F_GETFD 1 /* Get file descriptor flags. */
	73	#define F_SETFD 2 /* Set file descriptor flags. */
	74	#define F_GETFL 3 /* Get file status flags. */
	75	#define F_SETFL 4 /* Set file status flags. */
2747c0ea AJ	76	#ifndef __USE_FILE_OFFSET64
	77	# define F_GETLK 5 /* Get record locking info. */
	78	# define F_SETLK 6 /* Set record locking info (non-blocking). */
5e9880e0	79	# define F_SETLKW 7 /* Set record locking info (blocking). */
2747c0ea	80	#else
5e9880e0	81	# define F_GETLK F_GETLK64 /* Get record locking info. */
2747c0ea AJ	82	# define F_SETLK F_SETLK64 /* Set record locking info (non-blocking).*/
	83	# define F_SETLKW F_SETLKW64 /* Set record locking info (blocking). */
	84	#endif
	85	#define F_GETLK64 12 /* Get record locking info. */
	86	#define F_SETLK64 13 /* Set record locking info (non-blocking). */
5e9880e0	87	#define F_SETLKW64 14 /* Set record locking info (blocking). */
69a93556	88
0549913f	89	#if defined __USE_BSD \|\| defined __USE_UNIX98 \|\| defined __USE_XOPEN2K8
4ba089f8 JM	90	# define F_SETOWN 8 /* Get owner (process receiving SIGIO). */
4ba089f8 JM	91	# define F_GETOWN 9 /* Set owner (process receiving SIGIO). */
69a93556 UD	92	#endif
	93
	94	#ifdef __USE_GNU
	95	# define F_SETSIG 10 /* Set number of signal to be sent. */
	96	# define F_GETSIG 11 /* Get number of signal to be sent. */
06bda6de JM	97	# define F_SETOWN_EX 15 /* Get owner (thread receiving SIGIO). */
06bda6de JM	98	# define F_GETOWN_EX 16 /* Set owner (thread receiving SIGIO). */
69a93556 UD	99	#endif
69a93556 UD	100
d867f219	101	#ifdef __USE_GNU
5e9880e0 AJ	102	# define F_SETLEASE 1024 /* Set a lease. */
	103	# define F_GETLEASE 1025 /* Enquire what lease is active. */
	104	# define F_NOTIFY 1026 /* Request notfications on a directory. */
ce47c036 JM	105	# define F_SETPIPE_SZ 1031 /* Set pipe page size array. */
ce47c036 JM	106	# define F_GETPIPE_SZ 1032 /* Set pipe page size array. */
0549913f JM	107	#endif
0549913f JM	108	#ifdef __USE_XOPEN2K8
7e0bd9eb DJ	109	# define F_DUPFD_CLOEXEC 1030 /* Duplicate file descriptor with
7e0bd9eb DJ	110	close-on-exit set. */
d867f219 AJ	111	#endif
d867f219 AJ	112
8323b1ab	113	/* For F_[GET\|SET]FD. */
69a93556 UD	114	#define FD_CLOEXEC 1 /* actually anything with low bit set goes */
	115
	116	/* For posix fcntl() and `l_type' field of a `struct flock' for lockf(). */
	117	#define F_RDLCK 0 /* Read lock. */
5e9880e0 AJ	118	#define F_WRLCK 1 /* Write lock. */
5e9880e0 AJ	119	#define F_UNLCK 2 /* Remove lock. */
69a93556	120
b395a209	121	/* For old implementation of bsd flock(). */
69a93556 UD	122	#define F_EXLCK 4 /* or 3 */
	123	#define F_SHLCK 8 /* or 4 */
	124
	125	#ifdef __USE_BSD
b395a209	126	/* Operations for bsd flock(), also used by the kernel implementation. */
69a93556 UD	127	# define LOCK_SH 1 /* shared lock */
	128	# define LOCK_EX 2 /* exclusive lock */
	129	# define LOCK_NB 4 /* or'd with one of the above to prevent
	130	blocking */
	131	# define LOCK_UN 8 /* remove lock */
	132	#endif
	133
d867f219 AJ	134	#ifdef __USE_GNU
d867f219 AJ	135	# define LOCK_MAND 32 /* This is a mandatory flock: */
5e9880e0	136	# define LOCK_READ 64 /* ... which allows concurrent read operations. */
d867f219	137	# define LOCK_WRITE 128 /* ... which allows concurrent write operations. */
5e9880e0	138	# define LOCK_RW 192 /* ... Which allows concurrent read & write operations. */
d867f219 AJ	139	#endif
d867f219 AJ	140
5e9880e0	141	#ifdef __USE_GNU
d867f219	142	/* Types of directory notifications that may be requested with F_NOTIFY. */
5e9880e0 AJ	143	# define DN_ACCESS 0x00000001 /* File accessed. */
	144	# define DN_MODIFY 0x00000002 /* File modified. */
	145	# define DN_CREATE 0x00000004 /* File created. */
	146	# define DN_DELETE 0x00000008 /* File removed. */
	147	# define DN_RENAME 0x00000010 /* File renamed. */
	148	# define DN_ATTRIB 0x00000020 /* File changed attibutes. */
	149	# define DN_MULTISHOT 0x80000000 /* Don't remove notifier. */
	150	#endif
d867f219	151
69a93556 UD	152	struct flock
69a93556 UD	153	{
5e9880e0	154	short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
69a93556 UD	155	short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
	156	#ifndef __USE_FILE_OFFSET64
	157	__off_t l_start; /* Offset where the lock begins. */
	158	__off_t l_len; /* Size of the locked area; zero means until EOF. */
	159	#else
	160	__off64_t l_start; /* Offset where the lock begins. */
	161	__off64_t l_len; /* Size of the locked area; zero means until EOF. */
	162	#endif
	163	__pid_t l_pid; /* Process holding the lock. */
	164	};
	165
	166	#ifdef __USE_LARGEFILE64
	167	struct flock64
	168	{
5e9880e0	169	short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
69a93556 UD	170	short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
	171	__off64_t l_start; /* Offset where the lock begins. */
	172	__off64_t l_len; /* Size of the locked area; zero means until EOF. */
	173	__pid_t l_pid; /* Process holding the lock. */
	174	};
	175	#endif
	176
0366e559 JM	177	#ifdef __USE_GNU
	178	/* Owner types. */
	179	enum __pid_type
	180	{
bc97817f JM	181	F_OWNER_TID = 0, /* Kernel thread. */
	182	F_OWNER_PID, /* Process. */
	183	F_OWNER_PGRP, /* Process group. */
	184	F_OWNER_GID = F_OWNER_PGRP /* Alternative, obsolete name. */
0366e559 JM	185	};
	186
	187	/* Structure to use with F_GETOWN_EX and F_SETOWN_EX. */
	188	struct f_owner_ex
	189	{
	190	enum __pid_type type; /* Owner type of ID. */
	191	__pid_t pid; /* ID of owner. */
	192	};
	193	#endif
	194
69a93556 UD	195	/* Define some more compatibility macros to be backward compatible with
	196	BSD systems which did not managed to hide these kernel macros. */
	197	#ifdef __USE_BSD
	198	# define FAPPEND O_APPEND
	199	# define FFSYNC O_FSYNC
	200	# define FASYNC O_ASYNC
	201	# define FNONBLOCK O_NONBLOCK
	202	# define FNDELAY O_NDELAY
	203	#endif /* Use BSD. */
	204
	205	/* Advise to `posix_fadvise'. */
	206	#ifdef __USE_XOPEN2K
	207	# define POSIX_FADV_NORMAL 0 /* No further special treatment. */
	208	# define POSIX_FADV_RANDOM 1 /* Expect random page references. */
5e9880e0	209	# define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */
69a93556 UD	210	# define POSIX_FADV_WILLNEED 3 /* Will need these pages. */
	211	# define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */
	212	# define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */
	213	#endif
9efb40c8	214
142b51e4	215
711daa30	216	#ifdef __USE_GNU
b395a209 DJ	217	/* Flags for SYNC_FILE_RANGE. */
	218	# define SYNC_FILE_RANGE_WAIT_BEFORE 1 /* Wait upon writeout of all pages
	219	in the range before performing the
	220	write. */
	221	# define SYNC_FILE_RANGE_WRITE 2 /* Initiate writeout of all those
	222	dirty pages in the range which are
	223	not presently under writeback. */
	224	# define SYNC_FILE_RANGE_WAIT_AFTER 4 /* Wait upon writeout of all pages in
	225	the range after performing the
	226	write. */
	227
	228	/* Flags for SPLICE and VMSPLICE. */
	229	# define SPLICE_F_MOVE 1 /* Move pages instead of copying. */
	230	# define SPLICE_F_NONBLOCK 2 /* Don't block on the pipe splicing
	231	(but we may still block on the fd
	232	we splice from/to). */
	233	# define SPLICE_F_MORE 4 /* Expect more data. */
	234	# define SPLICE_F_GIFT 8 /* Pages passed in are a gift. */
82be5f39 JM	235
	236
	237	/* File handle structure. */
	238	struct file_handle
	239	{
	240	unsigned int handle_bytes;
	241	int handle_type;
	242	/* File identifier. */
	243	unsigned char f_handle[0];
	244	};
	245
	246	/* Maximum handle size (for now). */
	247	# define MAX_HANDLE_SZ 128
711daa30 DJ	248	#endif
711daa30 DJ	249
9efb40c8 UD	250	__BEGIN_DECLS
9efb40c8 UD	251
142b51e4 DJ	252	#ifdef __USE_GNU
142b51e4 DJ	253
9efb40c8 UD	254	/* Provide kernel hint to read ahead. */
	255	extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
	256	__THROW;
	257
142b51e4 DJ	258
142b51e4 DJ	259	/* Selective file content synch'ing. */
0ecde272	260	extern int sync_file_range (int __fd, __off64_t __offset, __off64_t __count,
b395a209	261	unsigned int __flags);
142b51e4 DJ	262
142b51e4 DJ	263
82be5f39 JM	264	/* Splice address range into a pipe.
	265
	266	This function is a possible cancellation point and therefore not
	267	marked with __THROW. */
017cc633 DJ	268	extern ssize_t vmsplice (int __fdout, const struct iovec *__iov,
017cc633 DJ	269	size_t __count, unsigned int __flags);
142b51e4	270
82be5f39 JM	271	/* Splice two files together.
	272
	273	This function is a possible cancellation point and therefore not
	274	marked with __THROW. */
017cc633 DJ	275	extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout,
	276	__off64_t *__offout, size_t __len,
	277	unsigned int __flags);
142b51e4	278
82be5f39 JM	279	/* In-kernel implementation of tee for pipe buffers.
	280
	281	This function is a possible cancellation point and therefore not
	282	marked with __THROW. */
017cc633 DJ	283	extern ssize_t tee (int __fdin, int __fdout, size_t __len,
017cc633 DJ	284	unsigned int __flags);
142b51e4	285
82be5f39 JM	286	/* Reserve storage for the data of the file associated with FD.
	287
	288	This function is a possible cancellation point and therefore not
	289	marked with __THROW. */
ae99295b JM	290	# ifndef __USE_FILE_OFFSET64
	291	extern int fallocate (int __fd, int __mode, __off_t __offset, __off_t __len);
	292	# else
	293	# ifdef __REDIRECT
b055d3f1 JM	294	extern int __REDIRECT (fallocate, (int __fd, int __mode, __off64_t __offset,
b055d3f1 JM	295	__off64_t __len),
ae99295b JM	296	fallocate64);
	297	# else
	298	# define fallocate fallocate64
	299	# endif
	300	# endif
	301	# ifdef __USE_LARGEFILE64
	302	extern int fallocate64 (int __fd, int __mode, __off64_t __offset,
	303	__off64_t __len);
	304	# endif
	305
82be5f39 JM	306
	307	/* Map file name to file handle. */
	308	extern int name_to_handle_at (int __dfd, const char *__name,
	309	struct file_handle __handle, int __mnt_id,
	310	int __flags) __THROW;
	311
	312	/* Open file using the file handle.
	313
	314	This function is a possible cancellation point and therefore not
	315	marked with __THROW. */
54feca39 JM	316	extern int open_by_handle_at (int __mountdirfd, struct file_handle *__handle,
54feca39 JM	317	int __flags);
82be5f39	318
142b51e4 DJ	319	#endif
142b51e4 DJ	320
9efb40c8	321	__END_DECLS