1 /* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library 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 GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If
16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
17 Cambridge, MA 02139, USA. */
27 #define badmode() return ((errno = EINVAL), 0)
29 /* Dissect the given mode string into an __io_mode. */
31 DEFUN(__getmode
, (mode
, mptr
), CONST
char *mode AND __io_mode
*mptr
)
33 register unsigned char i
;
38 memset ((PTR
) mptr
, 0, sizeof (*mptr
));
43 mptr
->__write
= mptr
->__create
= mptr
->__append
= 1;
46 mptr
->__write
= mptr
->__create
= mptr
->__truncate
= 1;
55 for (i
= 1; i
< 3; ++i
)
63 mptr
->__read
= mptr
->__write
= 1;
71 if (!mptr
->__read
&& !mptr
->__write
)
74 mptr
->__exclusive
= *mode
== 'x';
79 /* Open a new stream on the given file. */
81 DEFUN(fopen
, (filename
, mode
), CONST
char *filename AND CONST
char *mode
)
92 if (!__getmode (mode
, &m
))
95 stream
= __newstream ();
99 if (__stdio_open (filename
, m
, &stream
->__cookie
))
102 (void) fclose (stream
);