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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 13:14:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 13:14:44 +0000 |
commit | 30ff6afe596eddafacf22b1a5b2d1a3d6254ea15 (patch) | |
tree | 9b788335f92174baf7ee18f03ca8330b8c19ce2b /libmount/src/version.c | |
parent | Initial commit. (diff) | |
download | util-linux-30ff6afe596eddafacf22b1a5b2d1a3d6254ea15.tar.xz util-linux-30ff6afe596eddafacf22b1a5b2d1a3d6254ea15.zip |
Adding upstream version 2.36.1.upstream/2.36.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | libmount/src/version.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/libmount/src/version.c b/libmount/src/version.c new file mode 100644 index 0000000..b69b09a --- /dev/null +++ b/libmount/src/version.c @@ -0,0 +1,154 @@ +/* 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 |