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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:07:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:07:14 +0000
commita175314c3e5827eb193872241446f2f8f5c9d33c (patch)
treecd3d60ca99ae00829c52a6ca79150a5b6e62528b /wsrep-lib/src/uuid.hpp
parentInitial commit. (diff)
downloadmariadb-10.5-a175314c3e5827eb193872241446f2f8f5c9d33c.tar.xz
mariadb-10.5-a175314c3e5827eb193872241446f2f8f5c9d33c.zip
Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'wsrep-lib/src/uuid.hpp')
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+/*
+ * Copyright (C) 2019 Codership Oy <info@codership.com>
+ *
+ * This file is part of wsrep-lib.
+ *
+ * Wsrep-lib is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Wsrep-lib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with wsrep-lib. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/** @file uuid.hpp
+ *
+ * Helper methods to parse and print UUIDs, intended to use
+ * internally in wsrep-lib.
+ *
+ * The implementation is copied from wsrep-API v26.
+ */
+
+#ifndef WSREP_UUID_HPP
+#define WSREP_UUID_HPP
+
+#include "wsrep/compiler.hpp"
+
+#include <cstddef>
+
+/**
+ * Length of UUID string representation, not including terminating '\0'.
+ */
+#define WSREP_LIB_UUID_STR_LEN 36
+
+namespace wsrep
+{
+ /**
+ * UUID type.
+ */
+ typedef union uuid_
+ {
+ unsigned char data[16];
+ size_t alignment;
+ } uuid_t;
+
+ static const wsrep::uuid_t uuid_initializer = {{0, }};
+
+ /**
+ * Read UUID from string.
+ *
+ * @param str String to read from
+ * @param str_len Length of string
+ * @param[out] UUID to read to
+ *
+ * @return Number of bytes read or negative error code in case
+ * of error.
+ */
+ int uuid_scan(const char* str, size_t str_len, wsrep::uuid_t* uuid);
+
+ /**
+ * Write UUID to string. The caller must allocate at least
+ * WSREP_LIB_UUID_STR_LEN + 1 space for the output str parameter.
+ *
+ * @param uuid UUID to print
+ * @param str[out] Output buffer
+ * @param str_len Size of output buffer
+ *
+ * @return Number of chars printerd, negative error code in case of
+ * error.
+ */
+ int uuid_print(const wsrep::uuid_t* uuid, char* str, size_t str_len);
+}
+
+#endif // WSREP_UUID_HPP