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	 00000100	/* not fcntl.  */
      24  #define O_TRUNC	 00001000	/* not fcntl.  */
      25  #define O_EXCL		 00000200	/* not fcntl.  */
      26  #define O_NOCTTY	 00000400	/* not fcntl.  */
      27  
      28  #define O_NONBLOCK	 00004000
      29  #define O_APPEND	 00002000
      30  #define O_SYNC		 04000000
      31  
      32  #define __O_DIRECTORY	 00200000	/* Must be a directory.  */
      33  #define __O_NOFOLLOW	 00400000	/* Do not follow links.  */
      34  #define __O_CLOEXEC	 02000000 	/* Set close_on_exec.  */
      35  
      36  #define __O_DIRECT	 00040000 	/* Direct disk access.  */
      37  #define __O_NOATIME	 01000000 	/* Do not set atime.  */
      38  #define __O_PATH	 010000000 	/* Resolve pathname but do not open file.  */
      39  
      40  /* Not necessary, files are always with 64bit off_t.  */
      41  #define __O_LARGEFILE	00100000
      42  
      43  #define __O_DSYNC	00010000	/* Synchronize data.  */
      44  
      45  #define F_GETLK	5	/* Get record locking info.  */
      46  #define F_SETLK	6	/* Set record locking info (non-blocking).  */
      47  #define F_SETLKW	7	/* Set record locking info (blocking).  */
      48  #define F_GETLK64	12	/* Get record locking info.  */
      49  #define F_SETLK64	13	/* Set record locking info (non-blocking).  */
      50  #define F_SETLKW64	14 	/* Set record locking info (blocking).  */
      51  
      52  #define __F_SETOWN	8	/* Get owner of socket (receiver of SIGIO).  */
      53  #define __F_GETOWN	9	/* Set owner of socket (receiver of SIGIO).  */
      54  
      55  /* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
      56  #define F_RDLCK	0	/* Read lock.  */
      57  #define F_WRLCK	1	/* Write lock.  */
      58  #define F_UNLCK	2	/* Remove lock.  */
      59  
      60  /* for old implementation of bsd flock ().  */
      61  #define F_EXLCK	4	/* or 3.  */
      62  #define F_SHLCK	8	/* or 4.  */
      63  
      64  /* We don't need to support __USE_FILE_OFFSET64.  */
      65  struct flock
      66    {
      67      short int l_type;		/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
      68      short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
      69      __off_t l_start;		/* Offset where the lock begins.  */
      70      __off_t l_len;		/* Size of the locked area; zero means until EOF.  */
      71      __pid_t l_pid;		/* Process holding the lock.  */
      72    };
      73  
      74  #ifdef __USE_LARGEFILE64
      75  struct flock64
      76    {
      77      short int l_type;		/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
      78      short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
      79      __off64_t l_start;		/* Offset where the lock begins.  */
      80      __off64_t l_len;		/* Size of the locked area; zero means until EOF.  */
      81      __pid_t l_pid;		/* Process holding the lock.  */
      82    };
      83  #endif
      84  
      85  /* Include generic Linux declarations.  */
      86  #include <bits/fcntl-linux.h>