The
getbootfile ();
function retrieves the full pathname of the file from which the
current kernel was loaded, and returns a static pointer to the name.
A read/write interface to this information is available via the
sysctl(3)
MIB variable
``kern.bootfile
''
RETURN VALUES
If the call succeeds a string giving the pathname is returned.
If it
fails, a null pointer is returned and an error code is
placed in the global location
errno
If the boot blocks have not been modified to pass this information into
the kernel at boot time, the static string
``/boot/kernel/kernel
''
is returned instead of the real boot file.
