Re: Help on Kernel-Application Programme Communication

>>   The difficulty comes when I want the kernel wants to communicate
>>with the daemon. I don't know how to implement this. Maybe it is a
>>bd idea.But how can I? I'd really appreciate any assistance--I have
>> been thinking on it for such a long time.

>1) Build a characterdevice, the daemon does a blocking read and >writes the   result.
>2) 1) but instead of a device, use a file in /proc
>3) Implement a new syscall
>4) Open a TCP/IP connection to/from your daemon (localhost)
>5) Open a named pipe to/from your daemon
>6) Send signals to eachother
   My programme does not run in the interrupt context.The kernel 
searches the priority table before the output of a packet.If found,
the packet is sent out by the output routine;if not,the kernel then
copies it to the daemon in the application layer before it is sent 
out.
   I wanted to use the 4th or 5th method you mention before I sent
my mail. But I really wonder whether I can use the system calls,
such as "socket","pipe",and so on,in the kernel context.If I can, 
that is quite simple,if cannot,I have to call the kernel routines 
to do so,it will be more difficult.
   I am sorry to ask you such silly questions. Because I used to
do the application programmes.When it comes to kernel, I am really
a layman. But I am learning. I would be very appriciate if you can
give me some points in more detail.
   Thanks a lot.

Sincerely,
  Mikel

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