/* O_*, F_*, FD_* bit values for Linux.
   Copyright (C) 1995-2026 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
   <https://www.gnu.org/licenses/>.  */

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

#define O_CREAT	 00000100	/* not fcntl.  */
#define O_TRUNC	 00001000	/* not fcntl.  */
#define O_EXCL		 00000200	/* not fcntl.  */
#define O_NOCTTY	 00000400	/* not fcntl.  */

#define O_NONBLOCK	 00004000
#define O_APPEND	 00002000
#define O_SYNC		 04000000

#define __O_DIRECTORY	 00200000	/* Must be a directory.  */
#define __O_NOFOLLOW	 00400000	/* Do not follow links.  */
#define __O_CLOEXEC	 02000000 	/* Set close_on_exec.  */

#define __O_DIRECT	 00040000 	/* Direct disk access.  */
#define __O_NOATIME	 01000000 	/* Do not set atime.  */
#define __O_PATH	 010000000 	/* Resolve pathname but do not open file.  */

/* Not necessary, files are always with 64bit off_t.  */
#define __O_LARGEFILE	00100000

#define __O_DSYNC	00010000	/* Synchronize data.  */

#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).  */
#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).  */

#define __F_SETOWN	8	/* Get owner of socket (receiver of SIGIO).  */
#define __F_GETOWN	9	/* Set owner of socket (receiver of SIGIO).  */

/* 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.  */

/* We don't need to support __USE_FILE_OFFSET64.  */
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').  */
    __off_t l_start;		/* Offset where the lock begins.  */
    __off_t l_len;		/* Size of the locked area; zero means until EOF.  */
    __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

/* Include generic Linux declarations.  */
#include <bits/fcntl-linux.h>
