Am Mon, 29 Jan 2001 schrieben Sie:
> AFAIK the only way to access functions that exist in kernel space is via
> explicit calls to a "device driver" which could be read/write but are much
> more commonly done via the standard ioctl(2) mechanism. There simply is no
> way to directly "call" such a function because the kernel is not in the
> address space of any user task.
> Norm
I guess the main problem would be how can the program find his data segment /
stack etc. because it in different memory regions in user and kernel space. The
normal way is to share source code and share data in shm or use fifos/devices.
Nevertheless, a kernel module has to be compiled as module, a user programm as
such. User programs afford elf sections there is nothing for kernel modules,
further more main vs. init_module. Isn't such symbol in the kernel module
maybee you will able to insmod/rmmod the module without crash but it isn't
exceuted by the kernel (nice experience on c++ with c++ linkage of these
symbols)
Regards
Olaf
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