1  /* O_*, F_*, FD_* bit values for Linux.
       2     Copyright (C) 1995-2023 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  #define O_CREAT		 01000	/* not fcntl */
      24  #define O_TRUNC		 02000	/* not fcntl */
      25  #define O_EXCL		 04000	/* not fcntl */
      26  #define O_NOCTTY	010000	/* not fcntl */
      27  
      28  #define O_NONBLOCK	 00004
      29  #define O_APPEND	 00010
      30  #define O_SYNC		020040000
      31  
      32  #define __O_DIRECTORY	0100000	/* Must be a directory.  */
      33  #define __O_NOFOLLOW	0200000	/* Do not follow links.  */
      34  #define __O_CLOEXEC	010000000 /* Set close_on_exec.  */
      35  
      36  #define __O_DIRECT	02000000 /* Direct disk access.  */
      37  #define __O_NOATIME	04000000 /* Do not set atime.  */
      38  #define __O_PATH	040000000 /* Resolve pathname but do not open file.  */
      39  #define __O_TMPFILE	0100100000 /* Atomically create nameless file.  */
      40  
      41  /* Not necessary, files are always with 64bit off_t.  */
      42  #define __O_LARGEFILE	0
      43  
      44  #define __O_DSYNC	040000	/* Synchronize data.  */
      45  
      46  #define F_GETLK		7	/* Get record locking info.  */
      47  #define F_SETLK		8	/* Set record locking info (non-blocking).  */
      48  #define F_SETLKW	9	/* Set record locking info (blocking).  */
      49  #define F_GETLK64	F_GETLK	/* Get record locking info.  */
      50  #define F_SETLK64	F_SETLK	/* Set record locking info (non-blocking).  */
      51  #define F_SETLKW64	F_SETLKW /* Set record locking info (blocking).  */
      52  
      53  #define __F_SETOWN	5	/* Get owner of socket (receiver of SIGIO).  */
      54  #define __F_GETOWN	6	/* Set owner of socket (receiver of SIGIO).  */
      55  
      56  /* For posix fcntl() and `l_type' field of a `struct flock' for lockf() */
      57  #define F_RDLCK		1	/* Read lock.  */
      58  #define F_WRLCK		2	/* Write lock.  */
      59  #define F_UNLCK		8	/* Remove lock.  */
      60  
      61  /* for old implementation of bsd flock () */
      62  #define F_EXLCK		16	/* or 3 */
      63  #define F_SHLCK		32	/* or 4 */
      64  
      65  /* We don't need to support __USE_FILE_OFFSET64.  */
      66  struct flock
      67    {
      68      short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
      69      short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
      70      __off_t l_start;	/* Offset where the lock begins.  */
      71      __off_t l_len;	/* Size of the locked area; zero means until EOF.  */
      72      __pid_t l_pid;	/* Process holding the lock.  */
      73    };
      74  
      75  #ifdef __USE_LARGEFILE64
      76  struct flock64
      77    {
      78      short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
      79      short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
      80      __off64_t l_start;	/* Offset where the lock begins.  */
      81      __off64_t l_len;	/* Size of the locked area; zero means until EOF.  */
      82      __pid_t l_pid;	/* Process holding the lock.  */
      83    };
      84  #endif
      85  
      86  /* Include generic Linux declarations.  */
      87  #include <bits/fcntl-linux.h>