aboutsummaryrefslogtreecommitdiff
path: root/lib/sqfs
diff options
context:
space:
mode:
Diffstat (limited to 'lib/sqfs')
-rw-r--r--lib/sqfs/block_processor/common.c42
-rw-r--r--lib/sqfs/block_processor/fileapi.c28
2 files changed, 30 insertions, 40 deletions
diff --git a/lib/sqfs/block_processor/common.c b/lib/sqfs/block_processor/common.c
index 3859916..a1e8b6e 100644
--- a/lib/sqfs/block_processor/common.c
+++ b/lib/sqfs/block_processor/common.c
@@ -57,37 +57,31 @@ static bool is_zero_block(unsigned char *ptr, size_t size)
int block_processor_do_block(sqfs_block_t *block, sqfs_compressor_t *cmp,
sqfs_u8 *scratch, size_t scratch_size)
{
- ssize_t ret;
+ sqfs_s32 ret;
- if (block->size == 0) {
- block->checksum = 0;
+ if (block->size == 0)
return 0;
- }
if (is_zero_block(block->data, block->size)) {
block->flags |= SQFS_BLK_IS_SPARSE;
- block->checksum = 0;
return 0;
}
block->checksum = crc32(0, block->data, block->size);
- if (block->flags & SQFS_BLK_IS_FRAGMENT)
+ if (block->flags & (SQFS_BLK_IS_FRAGMENT | SQFS_BLK_DONT_COMPRESS))
return 0;
- if (!(block->flags & SQFS_BLK_DONT_COMPRESS)) {
- ret = cmp->do_block(cmp, block->data, block->size,
- scratch, scratch_size);
- if (ret < 0)
- return ret;
+ ret = cmp->do_block(cmp, block->data, block->size,
+ scratch, scratch_size);
+ if (ret < 0)
+ return ret;
- if (ret > 0) {
- memcpy(block->data, scratch, ret);
- block->size = ret;
- block->flags |= SQFS_BLK_IS_COMPRESSED;
- }
+ if (ret > 0) {
+ memcpy(block->data, scratch, ret);
+ block->size = ret;
+ block->flags |= SQFS_BLK_IS_COMPRESSED;
}
-
return 0;
}
@@ -110,11 +104,12 @@ int process_completed_fragment(sqfs_block_processor_t *proc, sqfs_block_t *frag,
proc->stats.total_frag_count += 1;
- err = sqfs_frag_table_find_tail_end(proc->frag_tbl,
- frag->checksum, frag->size,
- &index, &offset);
- if (err == 0)
- goto out_duplicate;
+ err = sqfs_frag_table_find_tail_end(proc->frag_tbl, frag->checksum,
+ frag->size, &index, &offset);
+ if (err == 0) {
+ sqfs_inode_set_frag_location(frag->inode, index, offset);
+ return 0;
+ }
if (proc->frag_block != NULL) {
size = proc->frag_block->size + frag->size;
@@ -164,9 +159,6 @@ fail:
free(*blk_out);
*blk_out = NULL;
return err;
-out_duplicate:
- sqfs_inode_set_frag_location(frag->inode, index, offset);
- return 0;
}
const sqfs_block_processor_stats_t
diff --git a/lib/sqfs/block_processor/fileapi.c b/lib/sqfs/block_processor/fileapi.c
index abaf3d2..098f724 100644
--- a/lib/sqfs/block_processor/fileapi.c
+++ b/lib/sqfs/block_processor/fileapi.c
@@ -44,14 +44,14 @@ int sqfs_block_processor_begin_file(sqfs_block_processor_t *proc,
proc->inode = inode;
proc->blk_flags = flags | SQFS_BLK_FIRST_BLOCK;
- proc->blk_current = NULL;
return 0;
}
-static int flush_block(sqfs_block_processor_t *proc, sqfs_block_t *block)
+static int flush_block(sqfs_block_processor_t *proc)
{
- block->flags = proc->blk_flags;
- block->inode = proc->inode;
+ sqfs_block_t *block = proc->blk_current;
+
+ proc->blk_current = NULL;
if (block->size < proc->max_block_size &&
!(block->flags & SQFS_BLK_DONT_FRAGMENT)) {
@@ -66,26 +66,25 @@ static int flush_block(sqfs_block_processor_t *proc, sqfs_block_t *block)
int sqfs_block_processor_append(sqfs_block_processor_t *proc, const void *data,
size_t size)
{
+ sqfs_block_t *new;
size_t diff;
- void *new;
int err;
while (size > 0) {
if (proc->blk_current == NULL) {
- new = alloc_flex(sizeof(*proc->blk_current), 1,
- proc->max_block_size);
-
+ new = alloc_flex(sizeof(*new), 1, proc->max_block_size);
if (new == NULL)
return SQFS_ERROR_ALLOC;
proc->blk_current = new;
+ proc->blk_current->flags = proc->blk_flags;
+ proc->blk_current->inode = proc->inode;
}
diff = proc->max_block_size - proc->blk_current->size;
if (diff == 0) {
- err = flush_block(proc, proc->blk_current);
- proc->blk_current = NULL;
+ err = flush_block(proc);
if (err)
return err;
continue;
@@ -106,9 +105,7 @@ int sqfs_block_processor_append(sqfs_block_processor_t *proc, const void *data,
if (proc->blk_current != NULL &&
proc->blk_current->size == proc->max_block_size) {
- err = flush_block(proc, proc->blk_current);
- proc->blk_current = NULL;
- return err;
+ return flush_block(proc);
}
return 0;
@@ -133,8 +130,9 @@ int sqfs_block_processor_end_file(sqfs_block_processor_t *proc)
}
if (proc->blk_current != NULL) {
- err = flush_block(proc, proc->blk_current);
- proc->blk_current = NULL;
+ err = flush_block(proc);
+ if (err)
+ return err;
}
proc->inode = NULL;