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glibc  2.9
close.c
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00001 /* Copyright (C) 1994, 1995, 1996, 1997, 2002 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 #include <errno.h>
00022 #include <unistd.h>
00023 
00024 #define _STDIO_H
00025 #include <bits/stdio_lim.h>
00026 #include "filedesc.h"
00027 
00028 /* Close the file descriptor FD.  */
00029 int
00030 __close (fd)
00031      int fd;
00032 {
00033   if ( !__FD_Is_valid( fd ) || !__FD_Table[ fd ].in_use )
00034     {
00035       __set_errno (EBADF);
00036       return -1;
00037     }
00038 
00039   __FD_Table[ fd ].in_use = 0;
00040   return 0;
00041 }
00042 libc_hidden_def (__close)
00043 weak_alias (__close, close)