guile/lib/fclose.c

/* fclose replacement.
   Copyright (C) 2008-2011 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <config.h>

/* Specification.  */
#include <stdio.h>

#include <errno.h>
#include <unistd.h>

/* Override fclose() to call the overridden close().  */

int
rpl_fclose (FILE *fp)
#undef fclose
{
  int saved_errno = 0;

  if (fflush (fp))
    saved_errno = errno;

  if (close (fileno (fp)) < 0 && saved_errno == 0)
    saved_errno = errno;

  fclose (fp); /* will fail with errno = EBADF */

  if (saved_errno != 0)
    {
      errno = saved_errno;
      return EOF;
    }
  return 0;
}