register_blkdev — register a new block device
int register_blkdev ( | unsigned int major, |
const char * name); |
unsigned int major
the requested major device number [1..255]. If major=0, try to
allocate any unused major number.
const char * namethe name of the new block device as a zero terminated string
The name must be unique within the system.
The return value depends on the major input parameter.
- if a major device number was requested in range [1..255] then the
function returns zero on success, or a negative error code
- if any unused major number was requested with major=0 parameter
then the return value is the allocated major number in range
[1..255] or a negative error code otherwise