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 silicon_meta { 30 uint8_t unknown0[0x2E]; 31 uint8_t ascii_version[0x36 - 0x2E]; 32 uint8_t diskname[0x56 - 0x36]; 33 uint8_t unknown1[0x60 - 0x56]; 34 uint32_t magic; 35 uint32_t unknown1a[0x6C - 0x64]; 36 uint32_t array_sectors_low; 37 uint32_t array_sectors_high; 38 uint8_t unknown2[0x78 - 0x74]; 39 uint32_t thisdisk_sectors; 40 uint8_t unknown3[0x100 - 0x7C]; 41 uint8_t unknown4[0x104 - 0x100]; 42 uint16_t product_id; 43 uint16_t vendor_id; 44 uint16_t minor_ver; 45 uint16_t major_ver; 46} PACKED; 47 48#define SILICON_MAGIC 0x2F000000 49 50int volume_id_probe_silicon_medley_raid(struct volume_id *id, uint64_t off, uint64_t size) 51{ 52 const uint8_t *buf; 53 uint64_t meta_off; 54 struct silicon_meta *sil; 55 56 info("probing at offset 0x%llx, size 0x%llx", 57 (unsigned long long) off, (unsigned long long) size); 58 59 if (size < 0x10000) 60 return -1; 61 62 meta_off = ((size / 0x200)-1) * 0x200; 63 buf = volume_id_get_buffer(id, off + meta_off, 0x200); 64 if (buf == NULL) 65 return -1; 66 67 sil = (struct silicon_meta *) buf; 68 if (le32_to_cpu(sil->magic) != SILICON_MAGIC) 69 return -1; 70 71 volume_id_set_usage(id, VOLUME_ID_RAID); 72 snprintf(id->type_version, sizeof(id->type_version)-1, "%u.%u", 73 le16_to_cpu(sil->major_ver), le16_to_cpu(sil->minor_ver)); 74 id->type = "silicon_medley_raid_member"; 75 76 return 0; 77} 78