adding system calls in linux..

[mythri]

hi all,

I am new here..

I want to know how do I add my own system call to the kernel..

I understand the steps needed..but i am not sure as where to start with...

i also need to place this system call within a module..and den be able to call it..

the call route is understandable but I am not able to begin a basic implementation of the coding part..

need some guidance as to where to start from..i have the makefile , the my_syscall.c ...with entry in syscall_table.S..

btw.i need to do all this in linux 2.6.22.6..

any guidance would be of great help...

thanks in advance..

mythri

[phanikiran]

Hi mythri same question from my side kernel 2.6.20 Redhat 9.. seems these forums are inactive.. Very badd

[ashok449]

Hi Mithri/Phanikiran,

Please go throught
http://www.cs.fsu.edu/~cop4610t/week...SystemCall.doc


Make sure your system call is compiled along with kernel, rebuild kernel and then test it.



Ashok Athukuri

[Franklin52]

Hi mythri same question from my side kernel 2.6.20 Redhat 9.. seems these forums are inactive.. Very badd

Not really, have you search on the forum? These links show how you can manipulate syscalls:

http://www.linuxforums.org/programmi...ng_part_i.html
http://www.linuxforums.org/programmi...g_part_ii.html

Regards