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/* 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"
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_MTAB
"mtab",
#endif
#ifdef USE_LIBMOUNT_SUPPORT_NAMESPACES
"namespaces",
#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, 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
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