/* * Copyright (c) 2025 Miroslav Cimerman * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * - The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** @addtogroup hr * @{ */ /** * @file */ #ifndef _HR_METADATA_NATIVE_H #define _HR_METADATA_NATIVE_H #include "../var.h" /* * Metadata is stored on the last block of an extent. */ #define HR_NATIVE_META_SIZE 1 /* in blocks */ #define HR_NATIVE_DATA_OFF 0 #define HR_NATIVE_MAGIC_STR "HelenRAID" #define HR_NATIVE_MAGIC_SIZE 16 #define HR_NATIVE_UUID_LEN 16 #define HR_NATIVE_METADATA_VERSION 1 struct hr_metadata { char magic[HR_NATIVE_MAGIC_SIZE]; uint8_t uuid[HR_NATIVE_UUID_LEN]; uint64_t data_blkno; /* usable blocks */ uint64_t truncated_blkno; /* size of smallest extent */ uint64_t data_offset; uint64_t counter; uint32_t version; /* XXX: yet unused */ uint32_t extent_no; uint32_t index; /* index of extent in volume */ uint32_t level; uint32_t layout; uint32_t strip_size; uint32_t bsize; char devname[HR_DEVNAME_LEN]; } __attribute__((packed)); #endif /** @} */