gl/fclose.c

   1 /* fclose replacement.
   2    Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18
  19 /* Specification.  */
  20 #include <stdio.h>
  21
  22 #include <errno.h>
  23 #include <unistd.h>
  24
  25 /* Override fclose() to call the overridden close().  */
  26
  27 int
  28 rpl_fclose (FILE *fp)
  29 #undef fclose
  30 {
  31   int saved_errno = 0;
  32
  33   if (fflush (fp))
  34     saved_errno = errno;
  35
  36   if (close (fileno (fp)) < 0 && saved_errno == 0)
  37     saved_errno = errno;
  38
  39   fclose (fp); /* will fail with errno = EBADF */
  40
  41   if (saved_errno != 0)
  42     {
  43       errno = saved_errno;
  44       return EOF;
  45     }
  46   return 0;
  47 }