1  /* O_*, F_*, FD_* bit values for Linux.
       2     Copyright (C) 2000-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #ifndef	_FCNTL_H
      20  # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
      21  #endif
      22  
      23  #include <bits/wordsize.h>
      24  
      25  #if __WORDSIZE == 64
      26  /* Not necessary, files are always with 64bit off_t.  */
      27  # define __O_LARGEFILE	0
      28  #endif
      29  
      30  #if __WORDSIZE == 64
      31  /* Not necessary, we always have 64-bit offsets.  */
      32  # define F_GETLK64	5	/* Get record locking info.  */
      33  # define F_SETLK64	6	/* Set record locking info (non-blocking).  */
      34  # define F_SETLKW64	7	/* Set record locking info (blocking).	*/
      35  #endif
      36  
      37  struct flock
      38    {
      39      short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.	*/
      40      short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
      41  #if __WORDSIZE == 64 || !defined __USE_FILE_OFFSET64
      42      __off_t l_start;	/* Offset where the lock begins.  */
      43      __off_t l_len;	/* Size of the locked area; zero means until EOF.  */
      44  #else
      45      __off64_t l_start;	/* Offset where the lock begins.  */
      46      __off64_t l_len;	/* Size of the locked area; zero means until EOF.  */
      47  #endif
      48      __pid_t l_pid;	/* Process holding the lock.  */
      49    };
      50  
      51  #ifdef __USE_LARGEFILE64
      52  struct flock64
      53    {
      54      short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.	*/
      55      short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
      56      __off64_t l_start;	/* Offset where the lock begins.  */
      57      __off64_t l_len;	/* Size of the locked area; zero means until EOF.  */
      58      __pid_t l_pid;	/* Process holding the lock.  */
      59    };
      60  #endif
      61  
      62  #if __WORDSIZE == 64
      63  # define __POSIX_FADV_DONTNEED	6 /* Don't need these pages.  */
      64  # define __POSIX_FADV_NOREUSE	7 /* Data will be accessed once.  */
      65  #else
      66  # define __POSIX_FADV_DONTNEED	4 /* Don't need these pages.  */
      67  # define __POSIX_FADV_NOREUSE	5 /* Data will be accessed once.  */
      68  #endif
      69  
      70  /* Include generic Linux declarations.  */
      71  #include <bits/fcntl-linux.h>