include/block/copy.h

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#ifndef BLKDEV_COPY_H_INCLUDED
#define BLKDEV_COPY_H_INCLUDED

#include <workqueue.h>
#include <block/device.h>

#define BLOCK_COPY_NOMEM                1

#define BLOCK_COPY_BLOCK_SIZE_MISMATCH  2

struct block_copy_request {
        struct block_device *source;
        struct block_device *target;
        block_addr_t source_start;
        block_addr_t target_start;
        uint32_t length;
        uint32_t total_blocks_copied;
        int status;
        int source_status;
        int dest_status;
        void (*completion_callback)(struct block_copy_request *req,
                        uint32_t blocks_copied, void *data);
        void (*progress_callback)(struct block_copy_request *req,
                        uint32_t blocks_copied, void *data);
        void *data;
        struct block_request *read_req;
        struct block_request *write_req;
        struct slist buffer_list;
        uint32_t blocks_allocated;
        size_t block_size;
        size_t blocks_pr_buf;
        struct workqueue_item work;
};

struct block_copy_request *block_copy_alloc(
                uint32_t nr_blocks,
                uint32_t block_size,
                void *data);

void block_copy_free(struct block_copy_request *request);

int block_copy_set_source(
                struct block_copy_request *req,
                struct block_device *dev,
                block_addr_t lba);

int block_copy_set_dest(
                struct block_copy_request *req,
                struct block_device *dev,
                block_addr_t lba);

void block_copy_set_completion_callback(
                struct block_copy_request *req,
                void (*callback)
                        (struct block_copy_request *, uint32_t, void *));

void block_copy_set_progress_callback(
                struct block_copy_request *req,
                void (*callback)
                        (struct block_copy_request *, uint32_t, void *));

void block_copy_submit(struct block_copy_request *req);

#endif /* BLKDEV_COPY_H_INCLUDED */

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