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Viewing changes to libblkid/src/superblocks/highpoint_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/highpoint_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 <stdint.h>
 
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#include "superblocks.h"
 
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struct hpt45x_metadata {
 
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        uint32_t        magic;
 
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};
 
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#define HPT45X_MAGIC_OK                 0x5a7816f3
 
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#define HPT45X_MAGIC_BAD                0x5a7816fd
 
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static int probe_highpoint45x(blkid_probe pr,
 
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                const struct blkid_idmag *mag __attribute__((__unused__)))
 
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{
 
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        struct hpt45x_metadata *hpt;
 
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        uint64_t off;
 
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        uint32_t magic;
 
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        if (pr->size < 0x10000)
 
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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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        off = ((pr->size / 0x200) - 11) * 0x200;
 
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        hpt = (struct hpt45x_metadata *)
 
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                        blkid_probe_get_buffer(pr,
 
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                                        off,
 
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                                        sizeof(struct hpt45x_metadata));
 
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        if (!hpt)
 
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                return -1;
 
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        magic = le32_to_cpu(hpt->magic);
 
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        if (magic != HPT45X_MAGIC_OK && magic != HPT45X_MAGIC_BAD)
 
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                return -1;
 
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        if (blkid_probe_set_magic(pr, off, sizeof(hpt->magic),
 
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                                (unsigned char *) &hpt->magic))
 
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                return -1;
 
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        return 0;
 
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}
 
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static int probe_highpoint37x(blkid_probe pr,
 
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                const struct blkid_idmag *mag __attribute__((__unused__)))
 
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{
 
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        if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr))
 
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                return -1;
 
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        return 0;
 
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}
 
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const struct blkid_idinfo highpoint45x_idinfo = {
 
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        .name           = "hpt45x_raid_member",
 
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        .usage          = BLKID_USAGE_RAID,
 
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        .probefunc      = probe_highpoint45x,
 
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        .magics         = BLKID_NONE_MAGIC
 
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};
 
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const struct blkid_idinfo highpoint37x_idinfo = {
 
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        .name           = "hpt37x_raid_member",
 
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        .usage          = BLKID_USAGE_RAID,
 
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        .probefunc      = probe_highpoint37x,
 
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        .magics         = {
 
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                /*
 
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                 * Superblok offset:                      4608 bytes  (9 sectors)
 
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                 * Magic string offset within superblock:   32 bytes
 
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                 *
 
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                 * kboff = (4608 + 32) / 1024
 
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                 * sboff = (4608 + 32) % kboff
 
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                 */
 
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                { .magic = "\xf0\x16\x78\x5a", .len = 4, .kboff = 4, .sboff = 544 },
 
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                { .magic = "\xfd\x16\x78\x5a", .len = 4, .kboff = 4, .sboff = 544 },
 
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                { NULL }
 
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        }
 
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};
 
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