netdev
[Top] [All Lists]

Re: NFS and Network Driver Question

Subject: Re: NFS and Network Driver Question
From: Bob Wirka <bobwirka@xxxxxxxxxxxx>
Date: Tue, 19 Oct 2004 19:19:10 -0500
Cc: netdev@xxxxxxxxxxx, linux-net@xxxxxxxxxxxxxxx
In-reply-to: <41704198.8000206@xxxxxxxxxxxx>
References: <41704198.8000206@xxxxxxxxxxxx>
Sender: netdev-bounce@xxxxxxxxxxx
User-agent: Mozilla Thunderbird 0.7.3 (Windows/20040803)
Ok, now I feel like I'm taking crazy pills...

The embedded system boots up and mounts the root file system on my host laptop. The 'rc.sysinit' startup script executes the command 'mount -a' which should mount /proc, /dev/pts, and /dev/shm, as listed in /etc/fstab. When executed, that command returns "mount: only root can do that".

When I get to the bash prompt, 'whoami' reports that I am, indeed, root. A 'mount -a' from the command prompt gives the same result; it doesn't think I'm root for the mount command.

I can chown a file owned by root to some other user, and I can create a file or directory in a directory owned by root; so it doesn't always think I'm not root.

Any ideas???

Thanks,

Bob Wirka
Realtime Control Works

Bob Wirka wrote:

Hello,

I'm trying to build a kernel that mounts a NFS root file system. This is an embedded system; it uses an SMSC LAN91C111 network chip that is hardwired to I/O addres 0x300 and IRQ 5. I've been using the driver (as supplied by SMSC) as a module, and it works fine. Now I'm trying to incorporate it into the kernel build so that I can mount an NFS file system when the system boots.

I've added the source code to the kernel tree, and modified the Makefile(s) and Config.in files so that the driver <<appears>> to be compiled into the kernel. The kernel will load, but the chip is not initialized and the NFS fails.

Since I don't know how to pass the io address and irq number to the kernel, I've hard-coded them into the driver's init function (which I don't see being called).

If someone could point me in the right direction, I'd appreciate it.

Thank you,

Bob Wirka
Realtime Control Works




<Prev in Thread] Current Thread [Next in Thread>