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/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
/* Close a stream. */
int
DEFUN(fclose, (stream), register FILE *stream)
{
int status;
if (stream == NULL)
{
/* Close all streams. */
register FILE *f;
for (f = __stdio_head; f != NULL; f = f->__next)
if (__validfp(f))
(void) fclose(f);
return 0;
}
if (!__validfp(stream))
{
errno = EINVAL;
return EOF;
}
if (stream->__mode.__write &&
/* Flush the buffer. */
__flshfp (stream, EOF) == EOF)
return EOF;
/* Free the buffer's storage. */
if (stream->__buffer != NULL && !stream->__userbuf)
free(stream->__buffer);
/* Close the system file descriptor. */
if (stream->__io_funcs.__close != NULL)
status = (*stream->__io_funcs.__close)(stream->__cookie);
else if (!stream->__seen && stream->__cookie != NULL)
status = __stdio_close(stream->__cookie);
else
status = 0;
/* Nuke the stream, making it available for re-use. */
__invalidate(stream);
return status < 0 ? EOF : 0;
}
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