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1 /* $NetBSD: fdopen.c,v 1.14 2003/08/07 16:43:22 agc Exp $ */
4 * Copyright (c) 1990, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <LibConfig.h>
35 #include <sys/EfiCdefs.h>
36 #if defined(LIBC_SCCS) && !defined(lint)
38 static char sccsid
[] = "@(#)fdopen.c 8.1 (Berkeley) 6/4/93";
40 __RCSID("$NetBSD: fdopen.c,v 1.14 2003/08/07 16:43:22 agc Exp $");
42 #endif /* LIBC_SCCS and not lint */
44 #include "namespace.h"
45 #include <sys/types.h>
50 #include <sys/EfiSysCall.h>
53 #include "reentrant.h"
57 __weak_alias(fdopen
,_fdopen
)
61 fdopen(int fd
, const char *mode
)
64 int flags
, oflags
, fdflags
, tmp
;
66 _DIAGASSERT(fd
!= -1);
68 if ((flags
= __sflags(mode
, &oflags
)) == 0)
71 /* Make sure the mode the user wants is a subset of the actual mode. */
72 if ((fdflags
= fcntl(fd
, F_GETFL
, 0)) < 0)
74 tmp
= fdflags
& O_ACCMODE
;
75 if (tmp
!= O_RDWR
&& (tmp
!= (oflags
& O_ACCMODE
))) {
80 if (oflags
& O_NONBLOCK
) {
82 if (fstat(fd
, &st
) == -1) {
85 if (!S_ISREG(st
.st_mode
)) {
91 if ((fp
= __sfp()) == NULL
)
93 fp
->_flags
= (unsigned short)flags
;
95 * If opened for appending, but underlying descriptor does not have
96 * O_APPEND bit set, assert __SAPP so that __swrite() will lseek to
97 * end before each write.
99 if ((oflags
& O_APPEND
) && !(fdflags
& O_APPEND
))
100 fp
->_flags
|= __SAPP
;
101 fp
->_file
= (short)fd
;
104 fp
->_write
= __swrite
;
106 fp
->_close
= __sclose
;