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Viewing changes to libblkid/src/superblocks/promise_raid.c

  • Committer: Package Import Robot
  • Author(s): LaMont Jones
  • Date: 2011-11-03 15:38:23 UTC
  • mto: (4.5.5 sid) (1.6.4)
  • mto: This revision was merged to the branch mainline in revision 85.
  • Revision ID: package-import@ubuntu.com-20111103153823-10sx16jprzxlhkqf
Import upstream version 2.20.1

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libblkid/src/superblocks/promise_raid.c
 
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/*
 
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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, 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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