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Diffstat (limited to 'fs/udf/partition.c')
-rw-r--r--fs/udf/partition.c212
1 files changed, 58 insertions, 154 deletions
diff --git a/fs/udf/partition.c b/fs/udf/partition.c
index a95d830a674d..aaab24c8c498 100644
--- a/fs/udf/partition.c
+++ b/fs/udf/partition.c
@@ -14,7 +14,7 @@
*
* HISTORY
*
- * 12/06/98 blf Created file.
+ * 12/06/98 blf Created file.
*
*/
@@ -32,19 +32,17 @@ 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);
+ 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);
+ return UDF_SB_PARTFUNC(sb, partition)(sb, block, partition, offset);
else
return UDF_SB_PARTROOT(sb, partition) + 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;
@@ -52,14 +50,11 @@ uint32_t udf_get_pblock_virt15(struct super_block * sb, uint32_t block,
uint32_t index;
uint32_t loc;
- index =
- (sb->s_blocksize -
- UDF_SB_TYPEVIRT(sb, partition).s_start_offset) / sizeof(uint32_t);
+ index = (sb->s_blocksize - UDF_SB_TYPEVIRT(sb,partition).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 > 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);
return 0xFFFFFFFF;
}
@@ -69,10 +64,7 @@ uint32_t udf_get_pblock_virt15(struct super_block * sb, uint32_t block,
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 = UDF_SB_TYPEVIRT(sb,partition).s_start_offset / sizeof(uint32_t) + block;
}
loc = udf_block_map(UDF_SB_VAT(sb), newblock);
@@ -83,7 +75,7 @@ uint32_t udf_get_pblock_virt15(struct super_block * sb, uint32_t block,
return 0xFFFFFFFF;
}
- loc = le32_to_cpu(((__le32 *) bh->b_data)[index]);
+ loc = le32_to_cpu(((__le32 *)bh->b_data)[index]);
brelse(bh);
@@ -93,8 +85,8 @@ uint32_t udf_get_pblock_virt15(struct super_block * sb, uint32_t block,
}
return udf_get_pblock(sb, loc,
- UDF_I_LOCATION(UDF_SB_VAT(sb)).
- partitionReferenceNum, offset);
+ UDF_I_LOCATION(UDF_SB_VAT(sb)).partitionReferenceNum,
+ offset);
}
inline uint32_t udf_get_pblock_virt20(struct super_block * sb, uint32_t block,
@@ -108,40 +100,29 @@ uint32_t udf_get_pblock_spar15(struct super_block * sb, uint32_t block,
{
int i;
struct sparingTable *st = NULL;
- uint32_t packet =
- (block + offset) & ~(UDF_SB_TYPESPAR(sb, partition).s_packet_len -
- 1);
+ uint32_t packet = (block + offset) & ~(UDF_SB_TYPESPAR(sb,partition).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 (UDF_SB_TYPESPAR(sb,partition).s_spar_map[i] != NULL) {
+ st = (struct sparingTable *)UDF_SB_TYPESPAR(sb,partition).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)
+ if (le32_to_cpu(st->mapEntry[i].origLocation) >= 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 (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) {
break;
+ }
}
}
- return UDF_SB_PARTROOT(sb, partition) + block + offset;
+
+ return UDF_SB_PARTROOT(sb,partition) + block + offset;
}
int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block)
@@ -153,20 +134,14 @@ int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block)
int i, j, k, l;
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);
+ 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;
+ if (UDF_SB_TYPESPAR(sb,i).s_spar_map[j] != NULL) {
+ st = (struct sparingTable *)sdata->s_spar_map[j]->b_data;
break;
}
}
@@ -174,122 +149,51 @@ int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block)
if (!st)
return 1;
- for (k = 0; k < le16_to_cpu(st->reallocationTableLen);
- k++) {
- if (le32_to_cpu(st->mapEntry[k].origLocation) ==
- 0xFFFFFFFF) {
+ for (k = 0; k < le16_to_cpu(st->reallocationTableLen); k++) {
+ if (le32_to_cpu(st->mapEntry[k].origLocation) == 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]);
+ 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]);
}
}
- *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(st->mapEntry[k].mappedLocation) +
+ ((old_block - UDF_SB_PARTROOT(sb,i)) & (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 (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));
return 0;
- } else
- if (le32_to_cpu
- (st->mapEntry[k].origLocation) > packet)
+ } else if (le32_to_cpu(st->mapEntry[k].origLocation) > packet) {
break;
+ }
}
- for (l = k; l < le16_to_cpu(st->reallocationTableLen);
- l++) {
- if (le32_to_cpu(st->mapEntry[l].origLocation) ==
- 0xFFFFFFFF) {
+
+ 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]);
+ 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));
+ *new_block = le32_to_cpu(st->mapEntry[k].mappedLocation) +
+ ((old_block - UDF_SB_PARTROOT(sb,i)) & (sdata->s_packet_len - 1));
return 0;
}
}
+
return 1;
- }
+ } /* if old_block */
}
+
if (i == UDF_SB_NUMPARTS(sb)) {
/* outside of partitions */
/* for now, fail =) */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 22:01:04 +0000