72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
/*
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* Copyright (C) 2008 Karel Zak <kzak@redhat.com>
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*
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* Inspired by libvolume_id by
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* Kay Sievers <kay.sievers@vrfy.org>
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*
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* This file may be redistributed under the terms of the
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* GNU Lesser General Public License.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <ctype.h>
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#include <stdint.h>
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#include "superblocks.h"
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struct promise_metadata {
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uint8_t sig[24];
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};
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#define PDC_CONFIG_OFF 0x1200
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#define PDC_SIGNATURE "Promise Technology, Inc."
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static int probe_pdcraid(blkid_probe pr,
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const struct blkid_idmag *mag __attribute__((__unused__)))
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{
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unsigned int i;
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static unsigned int sectors[] = {
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63, 255, 256, 16, 399, 591, 675, 735, 911, 974, 991, 951, 3087, 0
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};
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if (pr->size < 0x40000)
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return -1;
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if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr))
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return -1;
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for (i = 0; sectors[i] != 0; i++) {
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uint64_t off;
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struct promise_metadata *pdc;
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off = ((pr->size / 0x200) - sectors[i]) * 0x200;
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pdc = (struct promise_metadata *)
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blkid_probe_get_buffer(pr,
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off,
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sizeof(struct promise_metadata));
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if (!pdc)
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return -1;
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if (memcmp(pdc->sig, PDC_SIGNATURE,
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sizeof(PDC_SIGNATURE) - 1) == 0) {
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if (blkid_probe_set_magic(pr, off, sizeof(pdc->sig),
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(unsigned char *) pdc->sig))
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return -1;
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return 0;
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}
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}
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return -1;
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}
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const struct blkid_idinfo pdcraid_idinfo = {
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.name = "promise_fasttrack_raid_member",
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.usage = BLKID_USAGE_RAID,
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.probefunc = probe_pdcraid,
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.magics = BLKID_NONE_MAGIC
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};
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