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-rw-r--r--include/sqfs/block_writer.h26
-rw-r--r--lib/sqfs/block_processor/common.c3
-rw-r--r--lib/sqfs/block_writer.c63
3 files changed, 55 insertions, 37 deletions
diff --git a/include/sqfs/block_writer.h b/include/sqfs/block_writer.h
index 4ac0762..e921141 100644
--- a/include/sqfs/block_writer.h
+++ b/include/sqfs/block_writer.h
@@ -69,15 +69,19 @@ struct sqfs_block_hooks_t {
* disk. If the block has the @ref SQFS_BLK_ALIGN flag set, the
* function is called before padding the file.
*
- * The function may modify the block itself or write data to the file.
- * which is taken into account when padding the file.
+ * The function may write additional data to the file, which is taken
+ * into account when padding the file.
*
* @param user A user pointer.
- * @param block The block that is about to be written.
+ * @param flags A pointer to a combination of @ref E_SQFS_BLK_FLAGS
+ * describing the block. The callback can modify the
+ * user settable flags.
+ * @param size The size of the block in bytes.
+ * @param data A pointer to the raw block data.
* @param file The file that the block will be written to.
*/
- void (*pre_block_write)(void *user, sqfs_block_t *block,
- sqfs_file_t *file);
+ void (*pre_block_write)(void *user, sqfs_u32 *flags, sqfs_u32 size,
+ const sqfs_u8 *data, sqfs_file_t *file);
/**
* @brief Gets called after writing a block to disk.
@@ -91,11 +95,14 @@ struct sqfs_block_hooks_t {
* the file.
*
* @param user A user pointer.
- * @param block The block that is about to be written.
+ * @param flags A combination of @ref E_SQFS_BLK_FLAGS describing
+ * the block.
+ * @param size The size of the block in bytes.
+ * @param data A pointer to the raw block data.
* @param file The file that the block was written to.
*/
- void (*post_block_write)(void *user, const sqfs_block_t *block,
- sqfs_file_t *file);
+ void (*post_block_write)(void *user, sqfs_u32 flags, sqfs_u32 size,
+ const sqfs_u8 *data, sqfs_file_t *file);
/**
* @brief Gets called before writing a block of padding bytes to disk.
@@ -216,7 +223,8 @@ SQFS_API void sqfs_block_writer_destroy(sqfs_block_writer_t *wr);
* @return Zero on success, an @ref E_SQFS_ERROR error on failure.
*/
SQFS_API int sqfs_block_writer_write(sqfs_block_writer_t *wr,
- sqfs_block_t *block,
+ sqfs_u32 size, sqfs_u32 checksum,
+ sqfs_u32 flags, const sqfs_u8 *data,
sqfs_u64 *location);
/**
diff --git a/lib/sqfs/block_processor/common.c b/lib/sqfs/block_processor/common.c
index 38941ab..e2d92c5 100644
--- a/lib/sqfs/block_processor/common.c
+++ b/lib/sqfs/block_processor/common.c
@@ -54,7 +54,8 @@ int process_completed_block(sqfs_block_processor_t *proc, sqfs_block_t *blk)
if (!(blk->flags & SQFS_BLK_IS_COMPRESSED))
size |= 1 << 24;
- err = sqfs_block_writer_write(proc->wr, blk, &location);
+ err = sqfs_block_writer_write(proc->wr, blk->size, blk->checksum,
+ blk->flags, blk->data, &location);
if (err)
return err;
diff --git a/lib/sqfs/block_writer.c b/lib/sqfs/block_writer.c
index 52ed3ac..f77fcf8 100644
--- a/lib/sqfs/block_writer.c
+++ b/lib/sqfs/block_writer.c
@@ -88,16 +88,13 @@ static size_t deduplicate_blocks(sqfs_block_writer_t *wr, size_t count)
return i;
}
-static int align_file(sqfs_block_writer_t *wr, sqfs_block_t *blk)
+static int align_file(sqfs_block_writer_t *wr)
{
void *padding;
sqfs_u64 size;
size_t diff;
int ret;
- if (!(blk->flags & SQFS_BLK_ALIGN))
- return 0;
-
size = wr->file->get_size(wr->file);
diff = size % wr->devblksz;
if (diff == 0)
@@ -162,57 +159,69 @@ void sqfs_block_writer_destroy(sqfs_block_writer_t *wr)
free(wr);
}
-int sqfs_block_writer_write(sqfs_block_writer_t *wr, sqfs_block_t *block,
- sqfs_u64 *location)
+int sqfs_block_writer_write(sqfs_block_writer_t *wr, sqfs_u32 size,
+ sqfs_u32 checksum, sqfs_u32 flags,
+ const sqfs_u8 *data, sqfs_u64 *location)
{
size_t start, count;
sqfs_u64 offset;
sqfs_u32 out;
int err;
- if (wr->hooks != NULL && wr->hooks->pre_block_write != NULL)
- wr->hooks->pre_block_write(wr->user_ptr, block, wr->file);
+ if (wr->hooks != NULL && wr->hooks->pre_block_write != NULL) {
+ out = flags;
+ flags &= ~SQFS_BLK_USER_SETTABLE_FLAGS;
+
+ wr->hooks->pre_block_write(wr->user_ptr, &out, size,
+ data, wr->file);
- if (block->flags & SQFS_BLK_FIRST_BLOCK) {
+ flags |= out & SQFS_BLK_USER_SETTABLE_FLAGS;
+ }
+
+ if (flags & SQFS_BLK_FIRST_BLOCK) {
wr->start = wr->file->get_size(wr->file);
wr->file_start = wr->num_blocks;
- err = align_file(wr, block);
- if (err)
- return err;
+ if (flags & SQFS_BLK_ALIGN) {
+ err = align_file(wr);
+ if (err)
+ return err;
+ }
}
- if (block->size != 0) {
- out = block->size;
- if (!(block->flags & SQFS_BLK_IS_COMPRESSED))
+ if (size != 0) {
+ out = size;
+ if (!(flags & SQFS_BLK_IS_COMPRESSED))
out |= 1 << 24;
offset = wr->file->get_size(wr->file);
*location = offset;
- err = store_block_location(wr, offset, out, block->checksum);
+ err = store_block_location(wr, offset, out, checksum);
if (err)
return err;
- err = wr->file->write_at(wr->file, offset,
- block->data, block->size);
+ err = wr->file->write_at(wr->file, offset, data, size);
if (err)
return err;
- wr->stats.bytes_submitted += block->size;
+ wr->stats.bytes_submitted += size;
wr->stats.blocks_submitted += 1;
wr->stats.blocks_written = wr->num_blocks;
- wr->stats.bytes_written = offset + block->size -
- wr->data_area_start;
+ wr->stats.bytes_written = offset + size - wr->data_area_start;
}
- if (wr->hooks != NULL && wr->hooks->post_block_write != NULL)
- wr->hooks->post_block_write(wr->user_ptr, block, wr->file);
+ if (wr->hooks != NULL && wr->hooks->post_block_write != NULL) {
+ wr->hooks->post_block_write(wr->user_ptr, flags, size, data,
+ wr->file);
+ }
- if (block->flags & SQFS_BLK_LAST_BLOCK) {
- err = align_file(wr, block);
- if (err)
- return err;
+ if (flags & SQFS_BLK_LAST_BLOCK) {
+ if (flags & SQFS_BLK_ALIGN) {
+ err = align_file(wr);
+ if (err)
+ return err;
+ }
count = wr->num_blocks - wr->file_start;
start = deduplicate_blocks(wr, count);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 20:52:18 +0000