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. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#)fdopen.c 8.1 (Berkeley) 6/4/93
33 * $FreeBSD: src/lib/libc/stdio/fdopen.c,v 1.11 2008/05/10 18:39:20 antoine Exp $
36 #include "namespace.h"
37 #include <sys/types.h>
42 #include "un-namespace.h"
47 fdopen(int fd, const char *mode)
50 int flags, oflags, fdflags, tmp;
52 if ((flags = __sflags(mode, &oflags)) == 0)
55 /* Make sure the mode the user wants is a subset of the actual mode. */
56 if ((fdflags = _fcntl(fd, F_GETFL, 0)) < 0)
58 tmp = fdflags & O_ACCMODE;
59 if (tmp != O_RDWR && (tmp != (oflags & O_ACCMODE))) {
64 if ((fp = __sfp()) == NULL)
67 if (oflags & O_CLOEXEC)
68 _fcntl(fd, F_SETFD, FD_CLOEXEC); /* silently ignore err */
70 fp->pub._flags = flags;
72 * If opened for appending, but underlying descriptor does not have
73 * O_APPEND bit set, assert __SAPP so that __swrite() caller
74 * will _sseek() to the end before write.
76 if ((oflags & O_APPEND) && !(fdflags & O_APPEND))
77 fp->pub._flags |= __SAPP;
81 fp->_write = __swrite;
83 fp->_close = __sclose;