1/* 2 * volume_id - reads filesystem label and uuid 3 * 4 * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org> 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License as published by the 8 * Free Software Foundation version 2 of the License. 9 */ 10 11#ifndef _GNU_SOURCE 12#define _GNU_SOURCE 1 13#endif 14 15#ifdef HAVE_CONFIG_H 16# include <config.h> 17#endif 18 19#include <stdio.h> 20#include <stdlib.h> 21#include <unistd.h> 22#include <string.h> 23#include <errno.h> 24#include <ctype.h> 25 26#include "libvolume_id.h" 27#include "util.h" 28 29struct lsi_meta { 30 uint8_t sig[6]; 31} PACKED; 32 33#define LSI_SIGNATURE "$XIDE$" 34 35int volume_id_probe_lsi_mega_raid(struct volume_id *id, uint64_t off, uint64_t size) 36{ 37 const uint8_t *buf; 38 uint64_t meta_off; 39 struct lsi_meta *lsi; 40 41 info("probing at offset 0x%llx, size 0x%llx", 42 (unsigned long long) off, (unsigned long long) size); 43 44 if (size < 0x10000) 45 return -1; 46 47 meta_off = ((size / 0x200)-1) * 0x200; 48 buf = volume_id_get_buffer(id, off + meta_off, 0x200); 49 if (buf == NULL) 50 return -1; 51 52 lsi = (struct lsi_meta *) buf; 53 if (memcmp(lsi->sig, LSI_SIGNATURE, sizeof(LSI_SIGNATURE)-1) != 0) 54 return -1; 55 56 volume_id_set_usage(id, VOLUME_ID_RAID); 57 id->type = "lsi_mega_raid_member"; 58 59 return 0; 60} 61