1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* This file is part of libmount from util-linux project.
*
* Copyright (C) 2008-2018 Karel Zak <kzak@redhat.com>
*
* libmount is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*/
/**
* SECTION: version-utils
* @title: Version functions
* @short_description: functions to get the library version.
*/
#include <ctype.h>
#include "mountP.h"
#include "mount-api-utils.h"
static const char *lib_version = LIBMOUNT_VERSION;
static const char *lib_features[] = {
#ifdef HAVE_LIBSELINUX
"selinux",
#endif
#ifdef HAVE_SMACK
"smack",
#endif
#ifdef HAVE_BTRFS_SUPPORT
"btrfs",
#endif
#ifdef HAVE_CRYPTSETUP
"verity",
#endif
#ifdef USE_LIBMOUNT_SUPPORT_NAMESPACES
"namespaces",
#endif
#if defined(HAVE_MOUNTFD_API) && defined(HAVE_LINUX_MOUNT_H)
"idmapping",
#endif
#ifdef USE_LIBMOUNT_MOUNTFD_SUPPORT
"fd-based-mount",
#endif
#if defined(HAVE_STATX) && defined(HAVE_STRUCT_STATX) && defined(AT_STATX_DONT_SYNC)
"statx",
#endif
#if !defined(NDEBUG)
"assert", /* libc assert.h stuff */
#endif
"debug", /* always enabled */
NULL
};
/**
* mnt_parse_version_string:
* @ver_string: version string (e.g "2.18.0")
*
* Returns: release version code.
*/
int mnt_parse_version_string(const char *ver_string)
{
const char *cp;
int version = 0;
assert(ver_string);
for (cp = ver_string; *cp; cp++) {
if (*cp == '.')
continue;
if (!isdigit(*cp))
break;
version = (version * 10) + (*cp - '0');
}
return version;
}
/**
* mnt_get_library_version:
* @ver_string: return pointer to the static library version string if not NULL
*
* Returns: release version number.
*/
int mnt_get_library_version(const char **ver_string)
{
if (ver_string)
*ver_string = lib_version;
return mnt_parse_version_string(lib_version);
}
/**
* mnt_get_library_features:
* @features: returns a pointer to the static array of strings, the array is
* terminated by NULL.
*
* Returns: number of items in the features array not including the last NULL,
* or less than zero in case of error
*
* Example:
* <informalexample>
* <programlisting>
* const char **features;
*
* mnt_get_library_features(&features);
* while (features && *features)
* printf("%s\n", *features++);
* </programlisting>
* </informalexample>
*
*/
int mnt_get_library_features(const char ***features)
{
if (!features)
return -EINVAL;
*features = lib_features;
return ARRAY_SIZE(lib_features) - 1;
}
#ifdef TEST_PROGRAM
static int test_version(struct libmnt_test *ts __attribute__((unused)),
int argc, char *argv[])
{
const char *ver;
const char **features;
if (argc == 2)
printf("Your version: %d\n",
mnt_parse_version_string(argv[1]));
mnt_get_library_version(&ver);
printf("Library version: %s\n", ver);
printf("Library API version: " LIBMOUNT_VERSION "\n");
printf("Library features:");
mnt_get_library_features(&features);
while (features && *features)
printf(" %s", *features++);
printf("\n");
if (mnt_get_library_version(NULL) ==
mnt_parse_version_string(LIBMOUNT_VERSION))
return 0;
return -1;
}
int main(int argc, char *argv[])
{
struct libmnt_test ts[] = {
{ "--print", test_version, "print versions" },
{ NULL }
};
return mnt_run_test(ts, argc, argv);
}
#endif
|
