2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * $FreeBSD: src/lib/libc/stdio/fopen.c,v 1.3.2.1 2001/03/05 10:53:51 obrien Exp $
37 * $DragonFly: src/lib/libcr/stdio/Attic/fopen.c,v 1.3 2004/07/05 17:31:00 eirikn Exp $
39 * @(#)fopen.c 8.1 (Berkeley) 6/4/93
42 #include <sys/types.h>
51 fopen(const char *file, const char *mode)
57 if ((flags = __sflags(mode, &oflags)) == 0)
59 if ((fp = __sfp()) == NULL)
61 if ((f = _open(file, oflags, DEFFILEMODE)) < 0) {
62 fp->_flags = 0; /* release */
69 fp->_write = __swrite;
71 fp->_close = __sclose;
73 * When opening in append mode, even though we use O_APPEND,
74 * we need to seek to the end so that ftell() gets the right
75 * answer. If the user then alters the seek pointer, or
76 * the file extends, this will fail, but there is not much
77 * we can do about this. (We could set __SAPP and check in
80 if (oflags & O_APPEND)
81 (void) __sseek((void *)fp, (fpos_t)0, SEEK_END);