From: ebiederm@xmission.com (Eric W. Biederman)
To: "Serge E. Hallyn" <serge@hallyn.com>
Cc: LSM <linux-security-module@vger.kernel.org>, Andrew Morton <akpm@osdl.org>,
        James Morris <jmorris@namei.org>, Kees Cook <kees.cook@canonical.com>,
        containers@lists.linux-foundation.org,
        kernel list <linux-kernel@vger.kernel.org>,
        Alexey Dobriyan <adobriyan@gmail.com>,
        Michael Kerrisk <mtk.manpages@gmail.com>, xemul@parallels.com,
        dhowells@redhat.com
References: <20110217150224.GA26334@mail.hallyn.com>
	<20110217150316.GC26395@mail.hallyn.com>
Date: Thu, 17 Feb 2011 19:05:21 -0800
In-Reply-To: <20110217150316.GC26395@mail.hallyn.com> (Serge E. Hallyn's
	message of "Thu, 17 Feb 2011 15:03:16 +0000")
Message-ID: <m11v369h5a.fsf@fess.ebiederm.org>
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Subject: Re: [PATCH 3/9] allow sethostname in a container
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"Serge E. Hallyn" <serge@hallyn.com> writes:

Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>


> Signed-off-by: Serge E. Hallyn <serge.hallyn@canonical.com>
> ---
>  kernel/sys.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/kernel/sys.c b/kernel/sys.c
> index 18da702..7a1bbad 100644
> --- a/kernel/sys.c
> +++ b/kernel/sys.c
> @@ -1177,7 +1177,7 @@ SYSCALL_DEFINE2(sethostname, char __user *, name, int, len)
>  	int errno;
>  	char tmp[__NEW_UTS_LEN];
>  
> -	if (!capable(CAP_SYS_ADMIN))
> +	if (!ns_capable(current->nsproxy->uts_ns->user_ns, CAP_SYS_ADMIN))
>  		return -EPERM;
>  	if (len < 0 || len > __NEW_UTS_LEN)
>  		return -EINVAL;
--
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