thr_open.c revision 103388 
1/*
2 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by John Birrell.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL 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 AUTHOR 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
30 * SUCH DAMAGE.
31 *
32 * $FreeBSD: head/lib/libkse/thread/thr_open.c 103388 2002-09-16 08:45:36Z mini $
33 *
34 */
35#include <stdarg.h>
36#include <unistd.h>
37#include <fcntl.h>
38#include <dirent.h>
39#include <errno.h>
40#include <pthread.h>
41#include "thr_private.h"
42
43__weak_reference(__open, open);
44
45int
46_open(const char *path, int flags,...)
47{
48	int	fd;
49	int	mode = 0;
50	va_list	ap;
51
52	/* Check if the file is being created: */
53	if (flags & O_CREAT) {
54		/* Get the creation mode: */
55		va_start(ap, flags);
56		mode = va_arg(ap, int);
57		va_end(ap);
58	}
59	/* Open the file: */
60	if ((fd = __sys_open(path, flags, mode)) < 0) {
61	}
62	/* Initialise the file descriptor table entry: */
63	else if (_thread_fd_table_init(fd) != 0) {
64		/* Quietly close the file: */
65		__sys_close(fd);
66
67		/* Reset the file descriptor: */
68		fd = -1;
69	}
70
71	/* Return the file descriptor or -1 on error: */
72	return (fd);
73}
74
75int
76__open(const char *path, int flags,...)
77{
78	int	ret;
79	int	mode = 0;
80	va_list	ap;
81
82	_thread_enter_cancellation_point();
83
84	/* Check if the file is being created: */
85	if (flags & O_CREAT) {
86		/* Get the creation mode: */
87		va_start(ap, flags);
88		mode = va_arg(ap, int);
89		va_end(ap);
90	}
91
92	ret = _open(path, flags, mode);
93	_thread_leave_cancellation_point();
94
95	return ret;
96}
97