1REGISTER_BLKDEV(9) Block Devices REGISTER_BLKDEV(9)
2
3
4
6 register_blkdev - register a new block device
7
9 int register_blkdev(unsigned int major, const char * name);
10
12 major
13 the requested major device number [1..255]. If major=0, try to
14 allocate any unused major number.
15
16 name
17 the name of the new block device as a zero terminated string
18
20 The name must be unique within the system.
21
22 The return value depends on the major input parameter. - if a major
23 device number was requested in range [1..255] then the function returns
24 zero on success, or a negative error code - if any unused major number
25 was requested with major=0 parameter then the return value is the
26 allocated major number in range [1..255] or a negative error code
27 otherwise
28
30Kernel Hackers Manual 3.10 June 2019 REGISTER_BLKDEV(9)