Skip to main content

Block Storage Device (block)

Block storage device.

Device Type​

DEVICE_TYPE_BLOCK

Structure​

struct block_t {
    char * name;
    uint64_t (*capacity)(struct block_t * block);
    int64_t (*read)(struct block_t * block, uint8_t * buf, uint64_t offset, uint64_t count);
    int64_t (*write)(struct block_t * block, uint8_t * buf, uint64_t offset, uint64_t count);
    void (*sync)(struct block_t * block);
    void * priv;
};

Key API​

FunctionDescription
search_block(name)Find a block device by name
register_block(block, drv)Register a block device
unregister_block(block)Unregister a block device
register_sub_block(block, name, start, size)Register a sub-block device (partition)
block_capacity(block)Get device capacity
block_read(block, buf, offset, count)Read data blocks
block_write(block, buf, offset, count)Write data blocks
block_sync(block)Sync data

Description​

Block storage device interface (Flash, disk, RAM disk). Supports 64-bit addressing and sub-block device (partition) creation.