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* |
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* |
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* Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org> |
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* Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org> |
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* |
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* |
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* Based on information taken from dmraid: |
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* Copyright (C) 2004-2006 Heinz Mauelshagen, Red Hat GmbH |
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* |
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* This program is free software; you can redistribute it and/or modify it |
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the |
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* under the terms of the GNU General Public License as published by the |
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* Free Software Foundation version 2 of the License. |
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* Free Software Foundation version 2 of the License. |
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uint16_t signature; |
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uint16_t signature; |
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uint8_t version_number; |
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uint8_t version_number; |
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struct via_array { |
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struct via_array { |
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uint16_t disk_bits; |
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uint16_t disk_bit_mask; |
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uint8_t disk_array_ex; |
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uint8_t disk_array_ex; |
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uint32_t capacity_low; |
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uint32_t capacity_low; |
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uint32_t capacity_high; |
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uint32_t capacity_high; |
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#define VIA_SIGNATURE 0xAA55 |
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#define VIA_SIGNATURE 0xAA55 |
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/* 8 bit checksum on first 50 bytes of metadata. */ |
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static uint8_t meta_checksum(struct via_meta *via) |
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{ |
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uint8_t i = 50, sum = 0; |
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while (i--) |
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sum += ((uint8_t*) via)[i]; |
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return sum == via->checksum; |
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} |
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int volume_id_probe_via_raid(struct volume_id *id, uint64_t off, uint64_t size) |
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int volume_id_probe_via_raid(struct volume_id *id, uint64_t off, uint64_t size) |
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{ |
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{ |
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const uint8_t *buf; |
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const uint8_t *buf; |
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if (via->version_number > 1) |
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if (via->version_number > 1) |
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return -1; |
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return -1; |
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if (!meta_checksum(via)) |
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return -1; |
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volume_id_set_usage(id, VOLUME_ID_RAID); |
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volume_id_set_usage(id, VOLUME_ID_RAID); |
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snprintf(id->type_version, sizeof(id->type_version)-1, "%u", via->version_number); |
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snprintf(id->type_version, sizeof(id->type_version)-1, "%u", via->version_number); |
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id->type = "via_raid_member"; |
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id->type = "via_raid_member"; |
