1 files changed, 72 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/linearstore/journal/utils/rec_hdr.h b/qpid/cpp/src/qpid/linearstore/journal/utils/rec_hdr.h
new file mode 100644
index 0000000000..64349b5ab8
--- /dev/null
+++ b/qpid/cpp/src/qpid/linearstore/journal/utils/rec_hdr.h
@@ -0,0 +1,72 @@
+#ifndef QPID_LINEARSTORE_JOURNAL_UTILS_REC_HDR_H
+#define QPID_LINEARSTORE_JOURNAL_UTILS_REC_HDR_H
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+
+#pragma pack(1)
+
+/**
+ * \brief Struct for data common to the head of all journal files and records.
+ * This includes identification for the file type, the encoding version, endian
+ * indicator and a record ID.
+ *
+ * File header info in binary format (24 bytes):
+ * <pre>
+ *   0                           7
+ * +---+---+---+---+---+---+---+---+
+ * |     magic     |  ver  | uflag |
+ * +---+---+---+---+---+---+---+---+
+ * |             serial            |
+ * +---+---+---+---+---+---+---+---+
+ * |              rid              |
+ * +---+---+---+---+---+---+---+---+
+ *
+ * ver = file version (If the format or encoding of this file changes, then this
+ *       number should be incremented)
+ * rid = Record ID
+ * </pre>
+ */
+typedef struct rec_hdr_t {
+    uint32_t _magic;		/**< File type identifier (magic number) */
+    uint16_t _version;		/**< File encoding version */
+    uint16_t _uflag;		/**< User-defined flags */
+    uint64_t _serial;       /**< Serial number for this journal file */
+    uint64_t _rid;			/**< Record ID (rotating 64-bit counter) */
+} rec_hdr_t;
+
+void rec_hdr_init(rec_hdr_t* dest, const uint32_t magic, const uint16_t version, const uint16_t uflag, const uint64_t serial, const uint64_t rid);
+void rec_hdr_copy(rec_hdr_t* dest, const rec_hdr_t* src);
+int rec_hdr_check_base(rec_hdr_t* header, const uint32_t magic, const uint16_t version);
+int rec_hdr_check(rec_hdr_t* header, const uint32_t magic, const uint16_t version, const uint64_t serial);
+
+#pragma pack()
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ifndef QPID_LINEARSTORE_JOURNAL_UTILS_REC_HDR_H */