system call returns -1

[Rami Rosen]

Hi, Nada,
Return value of -1 could be EPERM,  "Operation not permitted"; see:
http://lxr.free-electrons.com/source/include/uapi/asm-generic/errno-base.h

Can you paste the code in pastebin or some other public site?

regards,
Rami Rosen
http://ramirose.wix.com/ramirosen


On Fri, May 2, 2014 at 9:23 AM, Nada Saif <nada.saif7 at gmail.com> wrote:
> Hi,
>
> I added a new system call to kernel 2.6.32.61 - I used these commands for
> complication :
>
> make oldconfig
> make
> make modules install
>
> It went ok with few warning messages.
>
> When I tried to test the system call , the function _syscall  return -1,
> what that means?
>
>
> Thanks,
> Nada
>
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