Block processor: Add a raw block submission function

This function allows submission of raw blocks to the block processor,
completely bypassing the file API.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 27 insertions, 0 deletions

diff --git a/lib/sqfs/block_processor/frontend.c b/lib/sqfs/block_processor/frontend.c
index d6571ea..9e9ecc7 100644
--- a/lib/sqfs/block_processor/frontend.c
+++ b/lib/sqfs/block_processor/frontend.c
@@ -170,6 +170,33 @@ int sqfs_block_processor_end_file(sqfs_block_processor_t *proc)
 	return 0;
 }
 
+int sqfs_block_processor_submit_block(sqfs_block_processor_t *proc, void *user,
+				      sqfs_u32 flags, const void *data,
+				      size_t size)
+{
+	sqfs_block_t *blk;
+
+	if (proc->begin_called)
+		return SQFS_ERROR_SEQUENCE;
+
+	if (size > proc->max_block_size)
+		return SQFS_ERROR_OVERFLOW;
+
+	if (flags & ~SQFS_BLK_FLAGS_ALL)
+		return SQFS_ERROR_UNSUPPORTED;
+
+	blk = get_new_block(proc);
+	if (blk == NULL)
+		return SQFS_ERROR_ALLOC;
+
+	blk->flags = flags | BLK_FLAG_MANUAL_SUBMISSION;
+	blk->user = user;
+	blk->size = size;
+	memcpy(blk->data, data, size);
+
+	return proc->append_to_work_queue(proc, blk);
+}
+
 const sqfs_block_processor_stats_t
 *sqfs_block_processor_get_stats(const sqfs_block_processor_t *proc)
 {