Date: Sat, 2 Jul 2005 12:12:04 +0200 From: Seb <sebastien.b@swissinfo.org> To: freebsd-hackers@freebsd.org Subject: Re: Accessing filesystem from a KLD Message-ID: <200507021212.05048.sebastien.b@swissinfo.org> In-Reply-To: <20050629134029.GA220@pm514-9.comsys.ntu-kpi.kiev.ua> References: <200506251203.13569.sebastien.b@swissinfo.org> <200506291155.50929.sebastien.b@swissinfo.org> <20050629134029.GA220@pm514-9.comsys.ntu-kpi.kiev.ua>
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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 > generated. 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. Thanks ! Mike Silbersack wrote : > Ask damien.bergamini@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.help
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