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 nvidia_meta { 30 uint8_t vendor[8]; 31 uint32_t size; 32 uint32_t chksum; 33 uint16_t version; 34} PACKED; 35 36#define NVIDIA_SIGNATURE "NVIDIA" 37 38int volume_id_probe_nvidia_raid(struct volume_id *id, uint64_t off, uint64_t size) 39{ 40 const uint8_t *buf; 41 uint64_t meta_off; 42 struct nvidia_meta *nv; 43 44 info("probing at offset 0x%llx, size 0x%llx", 45 (unsigned long long) off, (unsigned long long) size); 46 47 if (size < 0x10000) 48 return -1; 49 50 meta_off = ((size / 0x200)-2) * 0x200; 51 buf = volume_id_get_buffer(id, off + meta_off, 0x200); 52 if (buf == NULL) 53 return -1; 54 55 nv = (struct nvidia_meta *) buf; 56 if (memcmp(nv->vendor, NVIDIA_SIGNATURE, sizeof(NVIDIA_SIGNATURE)-1) != 0) 57 return -1; 58 59 volume_id_set_usage(id, VOLUME_ID_RAID); 60 snprintf(id->type_version, sizeof(id->type_version)-1, "%u", le16_to_cpu(nv->version)); 61 id->type = "nvidia_raid_member"; 62 63 return 0; 64} 65