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glibc  2.9
filedesc.h
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00001 /* Copyright (C) 1994, 1997, 1998 Free Software Foundation, Inc.
00002    Ported to standalone by Joel Sherrill jsherril@redstone-emh2.army.mil,
00003      On-Line Applications Research Corporation.
00004    This file is part of the GNU C Library.
00005 
00006    The GNU C Library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Lesser General Public
00008    License as published by the Free Software Foundation; either
00009    version 2.1 of the License, or (at your option) any later version.
00010 
00011    The GNU C Library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Lesser General Public License for more details.
00015 
00016    You should have received a copy of the GNU Lesser General Public
00017    License along with the GNU C Library; if not, write to the Free
00018    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00019    02111-1307 USA.  */
00020 
00021 /*
00022  *  This is the file descriptor used by the no OS implementation
00023  *  of __open, __read, __write, and __close.
00024  */
00025 
00026 #ifndef __FILEDESC_h
00027 #define __FILEDESC_h
00028 
00029 #define __need_FOPEN_MAX
00030 #include <bits/stdio_lim.h>
00031 
00032 #ifndef __DECLARE_FILE_DESCRIPTORS__
00033 #define FILEDESC_EXTERN extern
00034 #else
00035 #define FILEDESC_EXTERN
00036 #endif
00037 
00038 typedef struct {
00039   int  in_use;         /* 1 if in use, 0 otherwise */
00040   int  flags;          /* Flags from open */
00041 }   __no_os_file_descriptor;
00042 
00043 #define __FD_Is_valid( _fd ) \
00044   ( (_fd) >= 0 && (_fd) < FOPEN_MAX )
00045 
00046 FILEDESC_EXTERN __no_os_file_descriptor __FD_Table[ FOPEN_MAX ];
00047 
00048 #endif