SIMPLE SOLUTIONS

DEVCLASS_GET_MAXUNIT(9FREEBSD) - man page online | system kernel interfaces

Find the maximum unit number in the class.

Chapter
September 10, 2010
DEVCLASS_GET_MAXUNIT(9)           BSD Kernel Developer's Manual           DEVCLASS_GET_MAXUNIT(9)

NAME

devclass_get_maxunit — find the maximum unit number in the class

SYNOPSIS

#include <sys/param.h> #include <sys/bus.h> int devclass_get_maxunit(devclass_t dc);

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.

SEE ALSO

devclass(9), device(9)

AUTHORS

This manual page was written by Doug Rabson.

BUGS

The name is confusing since it is one greater than the maximum unit.
BSD September 10, 2010 BSD
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devclass_get_maxunit(9freebsd) referred by devclass(9freebsd)
refer to devclass(9freebsd) | device(9freebsd)