linux-kernel - Re: [PATCH, RFC] random: introduce getrandom(2) system call

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Message-ID: <20140720170635.GF5017@thunk.org>
Date:	Sun, 20 Jul 2014 13:06:35 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org, linux-abi@...r.kernel.org,
	linux-crypto@...r.kernel.org, beck@...nbsd.org
Subject: Re: [PATCH, RFC] random: introduce getrandom(2) system call

On Sun, Jul 20, 2014 at 08:50:06AM -0700, Andi Kleen wrote:
> Theodore Ts'o <tytso@....edu> writes:
> >  
> >  #undef __NR_syscalls
> > -#define __NR_syscalls 277
> > +#define __NR_syscalls 278
> 
> You need to add the syscall to kernel/sys_ni.c too, otherwise it will be
> impossible to build without random device.

The random device is not optional; it is alaways guaranteed to be
present.  From drivers/char/Makefile:

obj-y			+= mem.o random.o

Cheers,

					- Ted
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