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/nvidia_raid.c | 65 +++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 extras/volume_id/libvolume_id/nvidia_raid.c (limited to 'extras/volume_id/libvolume_id/nvidia_raid.c') diff --git a/extras/volume_id/libvolume_id/nvidia_raid.c b/extras/volume_id/libvolume_id/nvidia_raid.c new file mode 100644 index 0000000000..3b967e6979 --- /dev/null +++ b/extras/volume_id/libvolume_id/nvidia_raid.c @@ -0,0 +1,65 @@ +/* + * 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 nvidia_meta { + uint8_t vendor[8]; + uint32_t size; + uint32_t chksum; + uint16_t version; +} __attribute__((packed)); + +#define NVIDIA_SIGNATURE "NVIDIA" + +int volume_id_probe_nvidia_raid(struct volume_id *id, uint64_t off, uint64_t size) +{ + const uint8_t *buf; + uint64_t meta_off; + struct nvidia_meta *nv; + + 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; + + nv = (struct nvidia_meta *) buf; + if (memcmp(nv->vendor, NVIDIA_SIGNATURE, sizeof(NVIDIA_SIGNATURE)-1) != 0) + return -1; + + volume_id_set_usage(id, VOLUME_ID_RAID); + snprintf(id->type_version, sizeof(id->type_version)-1, "%u", le16_to_cpu(nv->version)); + id->type = "nvidia_raid_member"; + + return 0; +} -- cgit v1.2.3-54-g00ecf