Re: Redirecting output

From: Andrew Morton
Date: Wed Mar 23 2005 - 06:38:47 EST


"shafa.hidee" <shafa.hidee@xxxxxxxxx> wrote:
>
> I have created a dummy module for learning device driver in linux. I
> want to redirect the standard output of printk to my xterm. But by default
> it is redirected to tty.
>
> I have remote logged into the machine.

You can do this from within the module_init() handler only:

module_init_handler(...)
{
mm_segment_t old_fs;

....
old_fs = set_fs(KERNEL_DS);
sys_write(1, "foo\n", 4);
set_fs(old_fs);
...
}

The text comes out on modprobe's standard output.

Don't tell anyone I told you this.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/