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path: root/fs/adfs/super.c
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Diffstat (limited to 'fs/adfs/super.c')
-rw-r--r--fs/adfs/super.c98
1 files changed, 0 insertions, 98 deletions
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index e0eea9adb4e6..4091adb2c7ff 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -88,51 +88,6 @@ static int adfs_checkdiscrecord(struct adfs_discrecord *dr)
return 0;
}
-static unsigned char adfs_calczonecheck(struct super_block *sb, unsigned char *map)
-{
- unsigned int v0, v1, v2, v3;
- int i;
-
- v0 = v1 = v2 = v3 = 0;
- for (i = sb->s_blocksize - 4; i; i -= 4) {
- v0 += map[i] + (v3 >> 8);
- v3 &= 0xff;
- v1 += map[i + 1] + (v0 >> 8);
- v0 &= 0xff;
- v2 += map[i + 2] + (v1 >> 8);
- v1 &= 0xff;
- v3 += map[i + 3] + (v2 >> 8);
- v2 &= 0xff;
- }
- v0 += v3 >> 8;
- v1 += map[1] + (v0 >> 8);
- v2 += map[2] + (v1 >> 8);
- v3 += map[3] + (v2 >> 8);
-
- return v0 ^ v1 ^ v2 ^ v3;
-}
-
-static int adfs_checkmap(struct super_block *sb, struct adfs_discmap *dm)
-{
- unsigned char crosscheck = 0, zonecheck = 1;
- int i;
-
- for (i = 0; i < ADFS_SB(sb)->s_map_size; i++) {
- unsigned char *map;
-
- map = dm[i].dm_bh->b_data;
-
- if (adfs_calczonecheck(sb, map) != map[0]) {
- adfs_error(sb, "zone %d fails zonecheck", i);
- zonecheck = 0;
- }
- crosscheck ^= map[3];
- }
- if (crosscheck != 0xff)
- adfs_error(sb, "crosscheck != 0xff");
- return crosscheck == 0xff && zonecheck;
-}
-
static void adfs_put_super(struct super_block *sb)
{
int i;
@@ -322,59 +277,6 @@ static const struct super_operations adfs_sops = {
.show_options = adfs_show_options,
};
-static struct adfs_discmap *adfs_read_map(struct super_block *sb, struct adfs_discrecord *dr)
-{
- struct adfs_discmap *dm;
- unsigned int map_addr, zone_size, nzones;
- int i, zone;
- struct adfs_sb_info *asb = ADFS_SB(sb);
-
- nzones = asb->s_map_size;
- zone_size = (8 << dr->log2secsize) - le16_to_cpu(dr->zone_spare);
- map_addr = (nzones >> 1) * zone_size -
- ((nzones > 1) ? ADFS_DR_SIZE_BITS : 0);
- map_addr = signed_asl(map_addr, asb->s_map2blk);
-
- asb->s_ids_per_zone = zone_size / (asb->s_idlen + 1);
-
- dm = kmalloc_array(nzones, sizeof(*dm), GFP_KERNEL);
- if (dm == NULL) {
- adfs_error(sb, "not enough memory");
- return ERR_PTR(-ENOMEM);
- }
-
- for (zone = 0; zone < nzones; zone++, map_addr++) {
- dm[zone].dm_startbit = 0;
- dm[zone].dm_endbit = zone_size;
- dm[zone].dm_startblk = zone * zone_size - ADFS_DR_SIZE_BITS;
- dm[zone].dm_bh = sb_bread(sb, map_addr);
-
- if (!dm[zone].dm_bh) {
- adfs_error(sb, "unable to read map");
- goto error_free;
- }
- }
-
- /* adjust the limits for the first and last map zones */
- i = zone - 1;
- dm[0].dm_startblk = 0;
- dm[0].dm_startbit = ADFS_DR_SIZE_BITS;
- dm[i].dm_endbit = (adfs_disc_size(dr) >> dr->log2bpmb) +
- (ADFS_DR_SIZE_BITS - i * zone_size);
-
- if (adfs_checkmap(sb, dm))
- return dm;
-
- adfs_error(sb, "map corrupted");
-
-error_free:
- while (--zone >= 0)
- brelse(dm[zone].dm_bh);
-
- kfree(dm);
- return ERR_PTR(-EIO);
-}
-
static int adfs_fill_super(struct super_block *sb, void *data, int silent)
{
struct adfs_discrecord *dr;