sysdeps/mach/hurd/bits/fcntl.h - nest-cam/v366/glibc - Git at Google

 /* O_*, F_*, FD_* bit values for GNU.
    Copyright (C) 1993,1994,1996,1997,1998,1999,2000,2001,2004,2007
 	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, write to the Free
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */

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

 #include <sys/types.h>

 /* File access modes.  These are understood by io servers; they can be
    passed in `dir_lookup', and are returned by `io_get_openmodes'.
    Consequently they can be passed to `open', `hurd_file_name_lookup', and
    `file_name_lookup'; and are returned by `fcntl' with the F_GETFL
    command.  */

 /* In GNU, read and write are bits (unlike BSD).  */
 #ifdef __USE_GNU
 # define O_READ		O_RDONLY /* Open for reading.  */
 # define O_WRITE	O_WRONLY /* Open for writing.  */
 # define O_EXEC		0x0004	/* Open for execution.  */
 # define O_NORW		0	/* Open without R/W access.  */
 #endif
 /* POSIX.1 standard names.  */
 #define	O_RDONLY	0x0001	/* Open read-only.  */
 #define	O_WRONLY	0x0002	/* Open write-only.  */
 #define	O_RDWR		(O_RDONLY|O_WRONLY) /* Open for reading and writing. */
 #define	O_ACCMODE	O_RDWR	/* Mask for file access modes.  */

 #define O_LARGEFILE	0


 /* File name translation flags.  These are understood by io servers;
    they can be passed in `dir_lookup', and consequently to `open',
    `hurd_file_name_lookup', and `file_name_lookup'.  */

 #define	O_CREAT		0x0010	/* Create file if it doesn't exist.  */
 #define	O_EXCL		0x0020	/* Fail if file already exists.  */
 #ifdef __USE_GNU
 # define O_NOLINK	0x0040	/* No name mappings on final component.  */
 # define O_NOTRANS	0x0080	/* No translator on final component. */

 # define O_NOFOLLOW	0x00100000 /* Produce ENOENT if file is a symlink.  */
 # define O_DIRECTORY	0x00200000 /* Produce ENOTDIR if not a directory.  */
 #endif


 /* I/O operating modes.  These are understood by io servers; they can be
    passed in `dir_lookup' and set or fetched with `io_*_openmodes'.
    Consequently they can be passed to `open', `hurd_file_name_lookup',
    `file_name_lookup', and `fcntl' with the F_SETFL command; and are
    returned by `fcntl' with the F_GETFL command.  */

 #define	O_APPEND	0x0100	/* Writes always append to the file.  */
 #define O_ASYNC		0x0200	/* Send SIGIO to owner when data is ready.  */
 #define O_FSYNC		0x0400	/* Synchronous writes.  */
 #define O_SYNC		O_FSYNC
 #ifdef __USE_GNU
 # define O_NOATIME	0x0800	/* Don't set access time on read (owner).  */
 #endif
 #ifdef	__USE_MISC
 # define O_SHLOCK	0x00020000 /* Open with shared file lock.  */
 # define O_EXLOCK	0x00040000 /* Open with exclusive file lock.  */
 #endif

 /* These are lesser flavors of partial synchronization that are
    implied by our one flag (O_FSYNC).  */
 #if defined __USE_POSIX199309 || defined __USE_UNIX98
 # define O_DSYNC	O_SYNC	/* Synchronize data.  */
 # define O_RSYNC	O_SYNC	/* Synchronize read operations.	 */
 #endif


 /* The name O_NONBLOCK is unfortunately overloaded; it is both a file name
    translation flag and an I/O operating mode.  O_NDELAY is the deprecated
    BSD name for the same flag, overloaded in the same way.

    When used in `dir_lookup' (and consequently `open', `hurd_file_name_lookup',
    or `file_name_lookup'), O_NONBLOCK says the open should return immediately
    instead of blocking for any significant length of time (e.g., to wait
    for carrier detect on a serial line).  It is also saved as an I/O
    operating mode, and after open has the following meaning.

    When used in `io_*_openmodes' (and consequently `fcntl' with the F_SETFL
    command), the O_NONBLOCK flag means to do nonblocking i/o: any i/o
    operation that would block for any significant length of time will instead
    fail with EAGAIN.  */

 #define	O_NONBLOCK	0x0008	/* Non-blocking open or non-blocking I/O.  */
 #ifdef __USE_BSD
 # define O_NDELAY	O_NONBLOCK /* Deprecated.  */
 #endif


 #ifdef __USE_GNU
 /* Mask of bits which are understood by io servers.  */
 # define O_HURD		(0xffff | O_EXLOCK | O_SHLOCK)
 #endif


 /* Open-time action flags.  These are understood by `hurd_file_name_lookup'
    and consequently by `open' and `file_name_lookup'.  They are not preserved
    once the file has been opened.  */

 #define	O_TRUNC		0x00010000 /* Truncate file to zero length.  */
 #ifdef __USE_GNU
 # define O_CLOEXEC	0x00400000 /* Set FD_CLOEXEC.  */
 #endif


 /* Controlling terminal flags.  These are understood only by `open',
    and are not preserved once the file has been opened.  */

 #ifdef __USE_GNU
 # define O_IGNORE_CTTY	0x00080000 /* Don't do any ctty magic at all.  */
 #endif
 /* `open' never assigns a controlling terminal in GNU.  */
 #define	O_NOCTTY	0	/* Don't assign a controlling terminal.  */


 #ifdef __USE_BSD
 /* Bits in the file status flags returned by F_GETFL.  */
 # define FREAD		O_RDONLY
 # define FWRITE		O_WRONLY

 /* Traditional BSD names the O_* bits.  */
 # define FASYNC		O_ASYNC
 # define FCREAT		O_CREAT
 # define FEXCL		O_EXCL
 # define FTRUNC		O_TRUNC
 # define FNOCTTY	O_NOCTTY
 # define FFSYNC		O_FSYNC
 # define FSYNC		O_SYNC
 # define FAPPEND	O_APPEND
 # define FNONBLOCK	O_NONBLOCK
 # define FNDELAY	O_NDELAY
 #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.  */
 #if defined __USE_BSD || defined __USE_UNIX98
 # define F_GETOWN	5	/* Get owner (receiver of SIGIO).  */
 # define F_SETOWN	6	/* Set owner (receiver of SIGIO).  */
 #endif
 #define	F_GETLK		7	/* Get record locking info.  */
 #define	F_SETLK		8	/* Set record locking info (non-blocking).  */
 #define	F_SETLKW	9	/* Set record locking info (blocking).  */

 #ifdef __USE_GNU
 # define F_DUPFD_CLOEXEC 1030	/* Duplicate, set FD_CLOEXEC on new one.  */
 #endif


 /* File descriptor flags used with F_GETFD and F_SETFD.  */
 #define	FD_CLOEXEC	1	/* Close on exec.  */


 #include <bits/types.h>

 /* The structure describing an advisory lock.  This is the type of the third
    argument to `fcntl' for the F_GETLK, F_SETLK, and F_SETLKW requests.  */
 struct flock
   {
     int l_type;		/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
     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
   {
     int l_type;		/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
     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

 /* Values for the `l_type' field of a `struct flock'.  */
 #define	F_RDLCK	1	/* Read lock.  */
 #define	F_WRLCK	2	/* Write lock.  */
 #define	F_UNLCK	3	/* Remove lock.  */

 /* 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
	/* O_, F_, FD_* bit values for GNU.
	Copyright (C) 1993,1994,1996,1997,1998,1999,2000,2001,2004,2007
	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, write to the Free
	Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	02111-1307 USA. */

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

	#include <sys/types.h>

	/* File access modes. These are understood by io servers; they can be
	passed in `dir_lookup', and are returned by `io_get_openmodes'.
	Consequently they can be passed to `open', `hurd_file_name_lookup', and
	`file_name_lookup'; and are returned by `fcntl' with the F_GETFL
	command. */

	/* In GNU, read and write are bits (unlike BSD). */
	#ifdef __USE_GNU
	# define O_READ O_RDONLY /* Open for reading. */
	# define O_WRITE O_WRONLY /* Open for writing. */
	# define O_EXEC 0x0004 /* Open for execution. */
	# define O_NORW 0 /* Open without R/W access. */
	#endif
	/* POSIX.1 standard names. */
	#define O_RDONLY 0x0001 /* Open read-only. */
	#define O_WRONLY 0x0002 /* Open write-only. */
	#define O_RDWR (O_RDONLY\|O_WRONLY) /* Open for reading and writing. */
	#define O_ACCMODE O_RDWR /* Mask for file access modes. */

	#define O_LARGEFILE 0


	/* File name translation flags. These are understood by io servers;
	they can be passed in `dir_lookup', and consequently to `open',
	`hurd_file_name_lookup', and `file_name_lookup'. */

	#define O_CREAT 0x0010 /* Create file if it doesn't exist. */
	#define O_EXCL 0x0020 /* Fail if file already exists. */
	#ifdef __USE_GNU
	# define O_NOLINK 0x0040 /* No name mappings on final component. */
	# define O_NOTRANS 0x0080 /* No translator on final component. */

	# define O_NOFOLLOW 0x00100000 /* Produce ENOENT if file is a symlink. */
	# define O_DIRECTORY 0x00200000 /* Produce ENOTDIR if not a directory. */
	#endif


	/* I/O operating modes. These are understood by io servers; they can be
	passed in `dir_lookup' and set or fetched with `io_*_openmodes'.
	Consequently they can be passed to `open', `hurd_file_name_lookup',
	`file_name_lookup', and `fcntl' with the F_SETFL command; and are
	returned by `fcntl' with the F_GETFL command. */

	#define O_APPEND 0x0100 /* Writes always append to the file. */
	#define O_ASYNC 0x0200 /* Send SIGIO to owner when data is ready. */
	#define O_FSYNC 0x0400 /* Synchronous writes. */
	#define O_SYNC O_FSYNC
	#ifdef __USE_GNU
	# define O_NOATIME 0x0800 /* Don't set access time on read (owner). */
	#endif
	#ifdef __USE_MISC
	# define O_SHLOCK 0x00020000 /* Open with shared file lock. */
	# define O_EXLOCK 0x00040000 /* Open with exclusive file lock. */
	#endif

	/* These are lesser flavors of partial synchronization that are
	implied by our one flag (O_FSYNC). */
	#if defined __USE_POSIX199309 \|\| defined __USE_UNIX98
	# define O_DSYNC O_SYNC /* Synchronize data. */
	# define O_RSYNC O_SYNC /* Synchronize read operations. */
	#endif


	/* The name O_NONBLOCK is unfortunately overloaded; it is both a file name
	translation flag and an I/O operating mode. O_NDELAY is the deprecated
	BSD name for the same flag, overloaded in the same way.

	When used in `dir_lookup' (and consequently `open', `hurd_file_name_lookup',
	or `file_name_lookup'), O_NONBLOCK says the open should return immediately
	instead of blocking for any significant length of time (e.g., to wait
	for carrier detect on a serial line). It is also saved as an I/O
	operating mode, and after open has the following meaning.

	When used in `io_*_openmodes' (and consequently `fcntl' with the F_SETFL
	command), the O_NONBLOCK flag means to do nonblocking i/o: any i/o
	operation that would block for any significant length of time will instead
	fail with EAGAIN. */

	#define O_NONBLOCK 0x0008 /* Non-blocking open or non-blocking I/O. */
	#ifdef __USE_BSD
	# define O_NDELAY O_NONBLOCK /* Deprecated. */
	#endif


	#ifdef __USE_GNU
	/* Mask of bits which are understood by io servers. */
	# define O_HURD (0xffff \| O_EXLOCK \| O_SHLOCK)
	#endif


	/* Open-time action flags. These are understood by `hurd_file_name_lookup'
	and consequently by `open' and `file_name_lookup'. They are not preserved
	once the file has been opened. */

	#define O_TRUNC 0x00010000 /* Truncate file to zero length. */
	#ifdef __USE_GNU
	# define O_CLOEXEC 0x00400000 /* Set FD_CLOEXEC. */
	#endif


	/* Controlling terminal flags. These are understood only by `open',
	and are not preserved once the file has been opened. */

	#ifdef __USE_GNU
	# define O_IGNORE_CTTY 0x00080000 /* Don't do any ctty magic at all. */
	#endif
	/* `open' never assigns a controlling terminal in GNU. */
	#define O_NOCTTY 0 /* Don't assign a controlling terminal. */


	#ifdef __USE_BSD
	/* Bits in the file status flags returned by F_GETFL. */
	# define FREAD O_RDONLY
	# define FWRITE O_WRONLY

	/* Traditional BSD names the O_* bits. */
	# define FASYNC O_ASYNC
	# define FCREAT O_CREAT
	# define FEXCL O_EXCL
	# define FTRUNC O_TRUNC
	# define FNOCTTY O_NOCTTY
	# define FFSYNC O_FSYNC
	# define FSYNC O_SYNC
	# define FAPPEND O_APPEND
	# define FNONBLOCK O_NONBLOCK
	# define FNDELAY O_NDELAY
	#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. */
	#if defined __USE_BSD \|\| defined __USE_UNIX98
	# define F_GETOWN 5 /* Get owner (receiver of SIGIO). */
	# define F_SETOWN 6 /* Set owner (receiver of SIGIO). */
	#endif
	#define F_GETLK 7 /* Get record locking info. */
	#define F_SETLK 8 /* Set record locking info (non-blocking). */
	#define F_SETLKW 9 /* Set record locking info (blocking). */

	#ifdef __USE_GNU
	# define F_DUPFD_CLOEXEC 1030 /* Duplicate, set FD_CLOEXEC on new one. */
	#endif


	/* File descriptor flags used with F_GETFD and F_SETFD. */
	#define FD_CLOEXEC 1 /* Close on exec. */


	#include <bits/types.h>

	/* The structure describing an advisory lock. This is the type of the third
	argument to `fcntl' for the F_GETLK, F_SETLK, and F_SETLKW requests. */
	struct flock
	{
	int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
	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
	{
	int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
	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

	/* Values for the `l_type' field of a `struct flock'. */
	#define F_RDLCK 1 /* Read lock. */
	#define F_WRLCK 2 /* Write lock. */
	#define F_UNLCK 3 /* Remove lock. */

	/* 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