Re: [Qemu-devel] [PATCH] seccomp: add arch_prctl() to the syscall whitelist

[Paul Moore <pmoore@redhat.com>]

On Thursday, July 18, 2013 09:57:03 AM Paul Moore wrote:
> It appears that even a very simple /etc/qemu-ifup configuration can
> require the arch_prctl() syscall, see the example below:
> 
> 	#!/bin/sh
> 	/sbin/ifconfig $1 0.0.0.0 up
> 	/usr/sbin/brctl addif <switch> $1
> 
> Signed-off-by: Paul Moore <pmoore@redhat.com>

As with the other fix, a gentle nudge so this isn't forgotten.

> ---
>  qemu-seccomp.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/qemu-seccomp.c b/qemu-seccomp.c
> index 173d185..9e91c73 100644
> --- a/qemu-seccomp.c
> +++ b/qemu-seccomp.c
> @@ -234,7 +234,8 @@ static const struct QemuSeccompSyscall
> seccomp_whitelist[] = { { SCMP_SYS(waitid), 241 },
>      { SCMP_SYS(io_cancel), 241 },
>      { SCMP_SYS(io_setup), 241 },
> -    { SCMP_SYS(io_destroy), 241 }
> +    { SCMP_SYS(io_destroy), 241 },
> +    { SCMP_SYS(arch_prctl), 240 }
>  };
> 
>  int seccomp_start(void)
-- 
paul moore
security and virtualization @ redhat