interrupt hooking in linux
 

hello,

does anyone know how interrupt hooking in linux is done?

i am trying to write a module which alters the interrupt descriptor table (idt) and sets the entries to point to my own interrupt handlers.

can anybody help me with this? i don't even know where to start.
what files in the source have code that deals with assignment to the idt?

thanks in advance,
zvi

"what files in the source have code that deals with assignment to the idt?"

I found a structure which describes the idt. I am not sure whether this particular structure allocates the idt or just maps the idt as allocated by another routine.

In file /usr/src/kernel/arch/i386/kernel/traps.c the idt is mapped or allocated by:
struct desc_struct idt_table[256].

----------------------------------------------
Steve Stites