mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-18 19:10:06 +00:00
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.
113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
/* Copyright (C) 1991, 92, 93, 96, 97, 98 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 <ctype.h>
|
||
#include <errno.h>
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
|
||
|
||
#define badmode() return ((__set_errno (EINVAL)), 0)
|
||
|
||
/* Dissect the given mode string into an __io_mode. */
|
||
int
|
||
__getmode (const char *mode, __io_mode *mptr)
|
||
{
|
||
register unsigned char i;
|
||
|
||
if (mode == NULL)
|
||
badmode ();
|
||
|
||
memset ((void *) mptr, 0, sizeof (*mptr));
|
||
|
||
switch (*mode)
|
||
{
|
||
case 'a':
|
||
mptr->__write = mptr->__create = mptr->__append = 1;
|
||
break;
|
||
case 'w':
|
||
mptr->__write = mptr->__create = mptr->__truncate = 1;
|
||
break;
|
||
case 'r':
|
||
mptr->__read = 1;
|
||
break;
|
||
default:
|
||
badmode ();
|
||
}
|
||
|
||
for (i = 1; i < 4; ++i)
|
||
{
|
||
switch (*++mode)
|
||
{
|
||
case '\0':
|
||
break;
|
||
case '+':
|
||
mptr->__read = mptr->__write = 1;
|
||
continue;
|
||
case 'b':
|
||
mptr->__binary = 1;
|
||
continue;
|
||
case 'x':
|
||
mptr->__exclusive = 1;
|
||
continue;
|
||
}
|
||
break;
|
||
}
|
||
|
||
if (!mptr->__read && !mptr->__write)
|
||
badmode ();
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Open a new stream on the given file. */
|
||
FILE *
|
||
fopen (filename, mode)
|
||
const char *filename;
|
||
const char *mode;
|
||
{
|
||
FILE *stream;
|
||
__io_mode m;
|
||
|
||
if (filename == NULL)
|
||
{
|
||
__set_errno (EINVAL);
|
||
return NULL;
|
||
}
|
||
|
||
if (!__getmode (mode, &m))
|
||
return NULL;
|
||
|
||
stream = __newstream ();
|
||
if (stream == NULL)
|
||
return NULL;
|
||
|
||
if (__stdio_open (filename, m, &stream->__cookie))
|
||
{
|
||
int save = errno;
|
||
(void) fclose (stream);
|
||
__set_errno (save);
|
||
return NULL;
|
||
}
|
||
|
||
stream->__mode = m;
|
||
|
||
return stream;
|
||
}
|