Regarding getrandom syscall

Anoop anoop.chargotra at gmail.com
Sat Jun 18 09:30:32 EDT 2016


Hi Avantika,

On Sat, Jun 18, 2016 at 5:32 PM, Avantika Rawat <avani.rawat at gmail.com> wrote:
> Hi ALL,
>
> I am trying to use getrandom syscall in kernel 3.10.20 by following this
> link
>
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c6e9d6f38894798696f23c8084ca7edbf16ee895
>
> i have compiled the kernel and now want to call the getrandom syscall from
> userspace to generate random numbers. But i am getting following error while
> calling the getrandom () from userspace.
>
> (.text.startup+0x18): undefined reference to `getrandom'
> (.text.startup+0x1c): undefined reference to `getrandom'
Your user space program will not know where 'getrandom' is defined
unless it's in the C library. You need to research more on how to call
custom system calls.

-Anoop

>
>
> --
> Regards,
> Avantika Rawat
>
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