mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/* Copyright (C) 1991, 1994, 1995, 1996, 1997 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
|
|
|
|
/* Defined in fopen.c. */
|
|
extern int __getmode __P ((const char *, __io_mode *));
|
|
|
|
/* Defined in sysd-stdio.c. */
|
|
extern int __stdio_reopen __P ((const char *filename, __io_mode mode,
|
|
void *cookieptr, __io_close_fn closefn));
|
|
|
|
/* Replace STREAM, opening it on FILENAME. */
|
|
FILE *
|
|
freopen (filename, mode, stream)
|
|
const char *filename;
|
|
const char *mode;
|
|
register FILE *stream;
|
|
{
|
|
__io_mode m;
|
|
void *cookie;
|
|
|
|
if (!__getmode (mode, &m))
|
|
{
|
|
(void) fclose (stream);
|
|
__set_errno (EINVAL);
|
|
return NULL;
|
|
}
|
|
|
|
if (stream->__mode.__write)
|
|
/* Flush the stream. */
|
|
(void) fflush (stream);
|
|
|
|
/* Open the file, attempting to preserve the old cookie value. */
|
|
cookie = stream->__cookie;
|
|
if (__stdio_reopen (filename, m, &cookie,
|
|
stream->__seen ?
|
|
stream->__io_funcs.__close :
|
|
__stdio_close))
|
|
{
|
|
int save = errno;
|
|
(void) fclose (stream);
|
|
__set_errno (save);
|
|
return NULL;
|
|
}
|
|
|
|
/* Close the stream, first disabling its cookie close function because
|
|
__stdio_reopen has already dealt with closing the old cookie. */
|
|
stream->__seen = 1; /* It might have no functions yet. */
|
|
stream->__io_funcs.__close = NULL;
|
|
(void) fclose (stream);
|
|
|
|
stream->__magic = _IOMAGIC;
|
|
stream->__cookie = cookie;
|
|
stream->__mode = m;
|
|
|
|
return stream;
|
|
}
|