include/bits/fcntl.h

   1 /* O_*, F_*, FD_* bit values for Linux/x86.
   2    Copyright (C) 2001-2021 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 #ifdef __x86_64__
  24 # define __O_LARGEFILE  0
  25 #endif
  26
  27 #ifdef __x86_64__
  28 /* Not necessary, we always have 64-bit offsets.  */
  29 # define F_GETLK64      5       /* Get record locking info.  */
  30 # define F_SETLK64      6       /* Set record locking info (non-blocking).  */
  31 # define F_SETLKW64     7       /* Set record locking info (blocking).  */
  32 #endif
  33
  34
  35 struct flock
  36   {
  37     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
  38     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
  39 #ifndef __USE_FILE_OFFSET64
  40     __off_t l_start;    /* Offset where the lock begins.  */
  41     __off_t l_len;      /* Size of the locked area; zero means until EOF.  */
  42 #else
  43     __off64_t l_start;  /* Offset where the lock begins.  */
  44     __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
  45 #endif
  46     __pid_t l_pid;      /* Process holding the lock.  */
  47   };
  48
  49 #ifdef __USE_LARGEFILE64
  50 struct flock64
  51   {
  52     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
  53     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
  54     __off64_t l_start;  /* Offset where the lock begins.  */
  55     __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
  56     __pid_t l_pid;      /* Process holding the lock.  */
  57   };
  58 #endif
  59
  60 /* Include generic Linux declarations.  */
  61 #include <bits/fcntl-linux.h>