From accff726856a0b3258a413d823a534f4f437e6b2 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Wed, 9 Nov 2005 15:08:45 +0100 Subject: volume_id: provide libvolume_id.a file Signed-off-by: Kay Sievers --- extras/volume_id/libvolume_id/isw_raid.c | 67 ++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 extras/volume_id/libvolume_id/isw_raid.c (limited to 'extras/volume_id/libvolume_id/isw_raid.c') diff --git a/extras/volume_id/libvolume_id/isw_raid.c b/extras/volume_id/libvolume_id/isw_raid.c new file mode 100644 index 0000000000..1f49959ff9 --- /dev/null +++ b/extras/volume_id/libvolume_id/isw_raid.c @@ -0,0 +1,67 @@ +/* + * volume_id - reads filesystem label and uuid + * + * Copyright (C) 2005 Kay Sievers + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation version 2 of the License. + */ + +#ifndef _GNU_SOURCE +#define _GNU_SOURCE 1 +#endif + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include +#include +#include +#include +#include +#include + +#include "volume_id.h" +#include "logging.h" +#include "util.h" + +struct isw_meta { + uint8_t sig[32]; + uint32_t check_sum; + uint32_t mpb_size; + uint32_t family_num; + uint32_t generation_num; +} __attribute__((packed)); + +#define ISW_SIGNATURE "Intel Raid ISM Cfg Sig. " + + +int volume_id_probe_intel_software_raid(struct volume_id *id, uint64_t off, uint64_t size) +{ + const uint8_t *buf; + uint64_t meta_off; + struct isw_meta *isw; + + dbg("probing at offset 0x%llx, size 0x%llx", + (unsigned long long) off, (unsigned long long) size); + + if (size < 0x10000) + return -1; + + meta_off = ((size / 0x200)-2) * 0x200; + buf = volume_id_get_buffer(id, off + meta_off, 0x200); + if (buf == NULL) + return -1; + + isw = (struct isw_meta *) buf; + if (memcmp(isw->sig, ISW_SIGNATURE, sizeof(ISW_SIGNATURE)-1) != 0) + return -1; + + volume_id_set_usage(id, VOLUME_ID_RAID); + memcpy(id->type_version, &isw->sig[sizeof(ISW_SIGNATURE)-1], 6); + id->type = "isw_raid_member"; + + return 0; +} -- cgit v1.2.3-54-g00ecf