GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libutil/opendisk.c Lines: 0 23 0.0 %
Date: 2017-11-13 Branches: 0 18 0.0 %

Line Branch Exec Source
1
/*	$OpenBSD: opendisk.c,v 1.7 2014/06/30 00:26:22 deraadt Exp $	*/
2
/*	$NetBSD: opendisk.c,v 1.4 1997/09/30 17:13:50 phil Exp $	*/
3
4
/*-
5
 * Copyright (c) 1997 The NetBSD Foundation, Inc.
6
 * All rights reserved.
7
 *
8
 * This code is derived from software contributed to The NetBSD Foundation
9
 * by Luke Mewburn.
10
 *
11
 * Redistribution and use in source and binary forms, with or without
12
 * modification, are permitted provided that the following conditions
13
 * are met:
14
 * 1. Redistributions of source code must retain the above copyright
15
 *    notice, this list of conditions and the following disclaimer.
16
 * 2. Redistributions in binary form must reproduce the above copyright
17
 *    notice, this list of conditions and the following disclaimer in the
18
 *    documentation and/or other materials provided with the distribution.
19
 *
20
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30
 * POSSIBILITY OF SUCH DAMAGE.
31
 */
32
33
#include <sys/types.h>
34
35
#include <errno.h>
36
#include <fcntl.h>
37
#include <paths.h>
38
#include <stdio.h>
39
#include <string.h>
40
41
#include "util.h"
42
43
int
44
opendisk(const char *path, int flags, char *buf, size_t buflen, int iscooked)
45
{
46
	int f, rawpart;
47
48
	snprintf(buf, buflen, "%s", path);
49
50
	if ((flags & O_CREAT) != 0) {
51
		errno = EINVAL;
52
		return (-1);
53
	}
54
55
	rawpart = getrawpartition();
56
	if (rawpart < 0)
57
		return (-1);	/* sysctl(3) in getrawpartition sets errno */
58
59
	f = open(buf, flags);
60
	if (f != -1 || errno != ENOENT)
61
		return (f);
62
63
	snprintf(buf, buflen, "%s%c", path, 'a' + rawpart);
64
	f = open(buf, flags);
65
	if (f != -1 || errno != ENOENT)
66
		return (f);
67
68
	if (strchr(path, '/') != NULL)
69
		return (-1);
70
71
	snprintf(buf, buflen, "%s%s%s", _PATH_DEV, iscooked ? "" : "r", path);
72
	f = open(buf, flags);
73
	if (f != -1 || errno != ENOENT)
74
		return (f);
75
76
	snprintf(buf, buflen, "%s%s%s%c", _PATH_DEV, iscooked ? "" : "r", path,
77
	    'a' + rawpart);
78
	f = open(buf, flags);
79
	return (f);
80
}