DEVCLASS_GET_MAXUNIT(9) |
FreeBSD Kernel Developer's Manual |
DEVCLASS_GET_MAXUNIT(9) |
NAME
devclass_get_maxunit —
find the maximum unit number in the class
DESCRIPTION
Returns the next unit number to be allocated to device instances in the
devclass. This is one greater than the highest currently allocated unit.
RETURN VALUES
The
devclass_get_maxunit() function returns -1 if
dc is
NULL, otherwise it returns the next unit number in
dc's devclass.
ERRORS
None.
AUTHORS
This manual page was written by
Doug Rabson.
BUGS
The name is confusing since it is one greater than the maximum unit.