Accessing filesystem from a KLD
sebastien.b at swissinfo.org
Sat Jul 2 10:11:48 GMT 2005
Andrey Simonenko wrote :
> You got page fault from namei(), which is called from vn_open() to lookup
> a path name. namei() tries to obtain a reference on current directory for
> the current thread. This current directory (fd_cdir field) is NULL in
> your kthread. At this point a page fault in kernel address space is
You were right :) It works now.
> Can you change fd_cdir in kthread to rootvnode I don't know, haven't
> checked this yet.
It works - and that's what NDISulator does. You also need to set fd_rdir.
Mike Silbersack wrote :
> Ask damien.bergamini at free.fr for his code that does exactly what you're
> asking for. :)
I've looked at Damien's source, but AFAIK in his driver, the firmware is
loaded from userspace through an ioctl call on the network interface.
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