These functions facilitate loading kernel modules from userland
applications.
The
kld_isloaded()
function takes a name and returns a non-zero value if a module of that
name is currently loaded.
The name can be either the name of a module file
( cpufreq.ko),
the same name without the
.ko
extension
( cpufreq),
or the name of a module contained within that file
( cpu/ichss).
Only the latter will return correct results if the module is compiled
into the kernel.
The
kld_load()
function is a simple wrapper around the
kldload(2)
function.
It returns zero if and only if the corresponding
kldload()
call succeeded or returned
EEXIST
(signifying that the requested module was already loaded).
