*
* HISTORY
*
- * 12/06/98 blf Created file.
+ * 12/06/98 blf Created file.
*
*/
inline uint32_t udf_get_pblock(struct super_block *sb, uint32_t block,
uint16_t partition, uint32_t offset)
{
- if (partition >= UDF_SB_NUMPARTS(sb)) {
- udf_debug
- ("block=%d, partition=%d, offset=%d: invalid partition\n",
- block, partition, offset);
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *map;
+ if (partition >= sbi->s_partitions) {
+ udf_debug("block=%d, partition=%d, offset=%d: "
+ "invalid partition\n", block, partition, offset);
return 0xFFFFFFFF;
}
- if (UDF_SB_PARTFUNC(sb, partition))
- return UDF_SB_PARTFUNC(sb, partition) (sb, block, partition,
- offset);
+ map = &sbi->s_partmaps[partition];
+ if (map->s_partition_func)
+ return map->s_partition_func(sb, block, partition, offset);
else
- return UDF_SB_PARTROOT(sb, partition) + block + offset;
+ return map->s_partition_root + block + offset;
}
-uint32_t udf_get_pblock_virt15(struct super_block * sb, uint32_t block,
+uint32_t udf_get_pblock_virt15(struct super_block *sb, uint32_t block,
uint16_t partition, uint32_t offset)
{
struct buffer_head *bh = NULL;
uint32_t newblock;
uint32_t index;
uint32_t loc;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *map;
+ struct udf_virtual_data *vdata;
+ struct udf_inode_info *iinfo;
- index =
- (sb->s_blocksize -
- UDF_SB_TYPEVIRT(sb, partition).s_start_offset) / sizeof(uint32_t);
+ map = &sbi->s_partmaps[partition];
+ vdata = &map->s_type_specific.s_virtual;
+ index = (sb->s_blocksize - vdata->s_start_offset) / sizeof(uint32_t);
- if (block > UDF_SB_TYPEVIRT(sb, partition).s_num_entries) {
- udf_debug
- ("Trying to access block beyond end of VAT (%d max %d)\n",
- block, UDF_SB_TYPEVIRT(sb, partition).s_num_entries);
+ if (block > vdata->s_num_entries) {
+ udf_debug("Trying to access block beyond end of VAT "
+ "(%d max %d)\n", block, vdata->s_num_entries);
return 0xFFFFFFFF;
}
index = block % (sb->s_blocksize / sizeof(uint32_t));
} else {
newblock = 0;
- index =
- UDF_SB_TYPEVIRT(sb,
- partition).s_start_offset /
- sizeof(uint32_t) + block;
+ index = vdata->s_start_offset / sizeof(uint32_t) + block;
}
- loc = udf_block_map(UDF_SB_VAT(sb), newblock);
+ loc = udf_block_map(sbi->s_vat_inode, newblock);
- if (!(bh = sb_bread(sb, loc))) {
+ bh = sb_bread(sb, loc);
+ if (!bh) {
udf_debug("get_pblock(UDF_VIRTUAL_MAP:%p,%d,%d) VAT: %d[%d]\n",
sb, block, partition, loc, index);
return 0xFFFFFFFF;
}
- loc = le32_to_cpu(((__le32 *) bh->b_data)[index]);
+ loc = le32_to_cpu(((__le32 *)bh->b_data)[index]);
brelse(bh);
- if (UDF_I_LOCATION(UDF_SB_VAT(sb)).partitionReferenceNum == partition) {
+ iinfo = UDF_I(sbi->s_vat_inode);
+ if (iinfo->i_location.partitionReferenceNum == partition) {
udf_debug("recursive call to udf_get_pblock!\n");
return 0xFFFFFFFF;
}
return udf_get_pblock(sb, loc,
- UDF_I_LOCATION(UDF_SB_VAT(sb)).
- partitionReferenceNum, offset);
+ iinfo->i_location.partitionReferenceNum,
+ offset);
}
-inline uint32_t udf_get_pblock_virt20(struct super_block * sb, uint32_t block,
+inline uint32_t udf_get_pblock_virt20(struct super_block *sb, uint32_t block,
uint16_t partition, uint32_t offset)
{
return udf_get_pblock_virt15(sb, block, partition, offset);
}
-uint32_t udf_get_pblock_spar15(struct super_block * sb, uint32_t block,
+uint32_t udf_get_pblock_spar15(struct super_block *sb, uint32_t block,
uint16_t partition, uint32_t offset)
{
int i;
struct sparingTable *st = NULL;
- uint32_t packet =
- (block + offset) & ~(UDF_SB_TYPESPAR(sb, partition).s_packet_len -
- 1);
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *map;
+ uint32_t packet;
+ struct udf_sparing_data *sdata;
+
+ map = &sbi->s_partmaps[partition];
+ sdata = &map->s_type_specific.s_sparing;
+ packet = (block + offset) & ~(sdata->s_packet_len - 1);
for (i = 0; i < 4; i++) {
- if (UDF_SB_TYPESPAR(sb, partition).s_spar_map[i] != NULL) {
- st = (struct sparingTable *)UDF_SB_TYPESPAR(sb,
- partition).
- s_spar_map[i]->b_data;
+ if (sdata->s_spar_map[i] != NULL) {
+ st = (struct sparingTable *)
+ sdata->s_spar_map[i]->b_data;
break;
}
}
if (st) {
for (i = 0; i < le16_to_cpu(st->reallocationTableLen); i++) {
- if (le32_to_cpu(st->mapEntry[i].origLocation) >=
- 0xFFFFFFF0)
+ struct sparingEntry *entry = &st->mapEntry[i];
+ u32 origLoc = le32_to_cpu(entry->origLocation);
+ if (origLoc >= 0xFFFFFFF0)
break;
- else if (le32_to_cpu(st->mapEntry[i].origLocation) ==
- packet) {
- return le32_to_cpu(st->mapEntry[i].
- mappedLocation) + ((block +
- offset) &
- (UDF_SB_TYPESPAR
- (sb,
- partition).
- s_packet_len
- - 1));
- } else if (le32_to_cpu(st->mapEntry[i].origLocation) >
- packet)
+ else if (origLoc == packet)
+ return le32_to_cpu(entry->mappedLocation) +
+ ((block + offset) &
+ (sdata->s_packet_len - 1));
+ else if (origLoc > packet)
break;
}
}
- return UDF_SB_PARTROOT(sb, partition) + block + offset;
+
+ return map->s_partition_root + block + offset;
}
int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block)
struct sparingEntry mapEntry;
uint32_t packet;
int i, j, k, l;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ u16 reallocationTableLen;
+ struct buffer_head *bh;
+
+ for (i = 0; i < sbi->s_partitions; i++) {
+ struct udf_part_map *map = &sbi->s_partmaps[i];
+ if (old_block > map->s_partition_root &&
+ old_block < map->s_partition_root + map->s_partition_len) {
+ sdata = &map->s_type_specific.s_sparing;
+ packet = (old_block - map->s_partition_root) &
+ ~(sdata->s_packet_len - 1);
- for (i = 0; i < UDF_SB_NUMPARTS(sb); i++) {
- if (old_block > UDF_SB_PARTROOT(sb, i) &&
- old_block < UDF_SB_PARTROOT(sb, i) + UDF_SB_PARTLEN(sb, i))
- {
- sdata = &UDF_SB_TYPESPAR(sb, i);
- packet =
- (old_block -
- UDF_SB_PARTROOT(sb,
- i)) & ~(sdata->s_packet_len - 1);
-
- for (j = 0; j < 4; j++) {
- if (UDF_SB_TYPESPAR(sb, i).s_spar_map[j] !=
- NULL) {
- st = (struct sparingTable *)sdata->
- s_spar_map[j]->b_data;
+ for (j = 0; j < 4; j++)
+ if (sdata->s_spar_map[j] != NULL) {
+ st = (struct sparingTable *)
+ sdata->s_spar_map[j]->b_data;
break;
}
- }
if (!st)
return 1;
- for (k = 0; k < le16_to_cpu(st->reallocationTableLen);
- k++) {
- if (le32_to_cpu(st->mapEntry[k].origLocation) ==
- 0xFFFFFFFF) {
+ reallocationTableLen =
+ le16_to_cpu(st->reallocationTableLen);
+ for (k = 0; k < reallocationTableLen; k++) {
+ struct sparingEntry *entry = &st->mapEntry[k];
+ u32 origLoc = le32_to_cpu(entry->origLocation);
+
+ if (origLoc == 0xFFFFFFFF) {
for (; j < 4; j++) {
- if (sdata->s_spar_map[j]) {
- st = (struct
- sparingTable *)
- sdata->
- s_spar_map[j]->
- b_data;
- st->mapEntry[k].
- origLocation =
- cpu_to_le32(packet);
- udf_update_tag((char *)
- st,
- sizeof
- (struct
- sparingTable)
- +
- le16_to_cpu
- (st->
- reallocationTableLen)
- *
- sizeof
- (struct
- sparingEntry));
- mark_buffer_dirty
- (sdata->
- s_spar_map[j]);
- }
+ int len;
+ bh = sdata->s_spar_map[j];
+ if (!bh)
+ continue;
+
+ st = (struct sparingTable *)
+ bh->b_data;
+ entry->origLocation =
+ cpu_to_le32(packet);
+ len =
+ sizeof(struct sparingTable) +
+ reallocationTableLen *
+ sizeof(struct sparingEntry);
+ udf_update_tag((char *)st, len);
+ mark_buffer_dirty(bh);
}
- *new_block =
- le32_to_cpu(st->mapEntry[k].
- mappedLocation) +
- ((old_block -
- UDF_SB_PARTROOT(sb,
- i)) & (sdata->
- s_packet_len
- - 1));
+ *new_block = le32_to_cpu(
+ entry->mappedLocation) +
+ ((old_block -
+ map->s_partition_root) &
+ (sdata->s_packet_len - 1));
return 0;
- } else
- if (le32_to_cpu
- (st->mapEntry[k].origLocation) ==
- packet) {
- *new_block =
- le32_to_cpu(st->mapEntry[k].
- mappedLocation) +
- ((old_block -
- UDF_SB_PARTROOT(sb,
- i)) & (sdata->
- s_packet_len
- - 1));
+ } else if (origLoc == packet) {
+ *new_block = le32_to_cpu(
+ entry->mappedLocation) +
+ ((old_block -
+ map->s_partition_root) &
+ (sdata->s_packet_len - 1));
return 0;
- } else
- if (le32_to_cpu
- (st->mapEntry[k].origLocation) > packet)
+ } else if (origLoc > packet)
break;
}
- for (l = k; l < le16_to_cpu(st->reallocationTableLen);
- l++) {
- if (le32_to_cpu(st->mapEntry[l].origLocation) ==
- 0xFFFFFFFF) {
- for (; j < 4; j++) {
- if (sdata->s_spar_map[j]) {
- st = (struct
- sparingTable *)
- sdata->
- s_spar_map[j]->
- b_data;
- mapEntry =
- st->mapEntry[l];
- mapEntry.origLocation =
- cpu_to_le32(packet);
- memmove(&st->
- mapEntry[k + 1],
- &st->
- mapEntry[k],
- (l -
- k) *
- sizeof(struct
- sparingEntry));
- st->mapEntry[k] =
- mapEntry;
- udf_update_tag((char *)
- st,
- sizeof
- (struct
- sparingTable)
- +
- le16_to_cpu
- (st->
- reallocationTableLen)
- *
- sizeof
- (struct
- sparingEntry));
- mark_buffer_dirty
- (sdata->
- s_spar_map[j]);
- }
- }
- *new_block =
- le32_to_cpu(st->mapEntry[k].
- mappedLocation) +
- ((old_block -
- UDF_SB_PARTROOT(sb,
- i)) & (sdata->
- s_packet_len
- - 1));
- return 0;
+
+ for (l = k; l < reallocationTableLen; l++) {
+ struct sparingEntry *entry = &st->mapEntry[l];
+ u32 origLoc = le32_to_cpu(entry->origLocation);
+
+ if (origLoc != 0xFFFFFFFF)
+ continue;
+
+ for (; j < 4; j++) {
+ bh = sdata->s_spar_map[j];
+ if (!bh)
+ continue;
+
+ st = (struct sparingTable *)bh->b_data;
+ mapEntry = st->mapEntry[l];
+ mapEntry.origLocation =
+ cpu_to_le32(packet);
+ memmove(&st->mapEntry[k + 1],
+ &st->mapEntry[k],
+ (l - k) *
+ sizeof(struct sparingEntry));
+ st->mapEntry[k] = mapEntry;
+ udf_update_tag((char *)st,
+ sizeof(struct sparingTable) +
+ reallocationTableLen *
+ sizeof(struct sparingEntry));
+ mark_buffer_dirty(bh);
}
+ *new_block =
+ le32_to_cpu(
+ st->mapEntry[k].mappedLocation) +
+ ((old_block - map->s_partition_root) &
+ (sdata->s_packet_len - 1));
+ return 0;
}
+
return 1;
- }
+ } /* if old_block */
}
- if (i == UDF_SB_NUMPARTS(sb)) {
+
+ if (i == sbi->s_partitions) {
/* outside of partitions */
/* for now, fail =) */
return 1;