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global variables in KLD (FreeBSD)

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Old 01-17-2008
global variables in KLD (FreeBSD)
Hello dear BSD hackers,
how can I define and then make visible some variables that I define in KLD (BSD) for other part of Kernel or other KLD's ?

if i declare for example the varibale out of load-function of KLD , the name of this variable isn't export to symbol-table and the variable can not be visible from other modules.

thanx a lot for your answers.
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LEARN ABOUT FREEBSD

kld

KLD(3)							   BSD Library Functions Manual 						    KLD(3)

NAME

     kld_isloaded, kld_load -- kld utility functions

LIBRARY

     System Utilities Library (libutil, -lutil)

SYNOPSIS

     #include <libutil.h>

     int
     kld_isloaded(const char *name);

     int
     kld_load(const char *name);

DESCRIPTION

     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).

SEE ALSO

     kldfirstmod(2), kldload(2), kldnext(2), kldstat(2), modfnext(2), modstat(2), kld(4)

HISTORY

     The kld_isloaded() and kld_load() functions first appeared in FreeBSD 6.3.

AUTHORS

     The kld_isloaded() and kld_load() functions and this manual page were written by Dag-Erling Smorgrav <des@FreeBSD.org>.

BSD
								 February 18, 2006							       BSD