From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754709Ab2HMUYX (ORCPT ); Mon, 13 Aug 2012 16:24:23 -0400 Received: from out02.mta.xmission.com ([166.70.13.232]:53780 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754668Ab2HMUYS (ORCPT ); Mon, 13 Aug 2012 16:24:18 -0400 From: "Eric W. Biederman" To: Cc: , , David Miller , Serge Hallyn , "Eric W. Biederman" Date: Mon, 13 Aug 2012 13:18:26 -0700 Message-Id: <1344889115-21610-12-git-send-email-ebiederm@xmission.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1344889115-21610-1-git-send-email-ebiederm@xmission.com> References: <87ehnav9n5.fsf@xmission.com> <1344889115-21610-1-git-send-email-ebiederm@xmission.com> X-XM-SPF: eid=;;;mid=;;;hst=in02.mta.xmission.com;;;ip=98.207.153.68;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX19JqGaxtJ4OfKPDwoT3/nArgoQTSTuqHcg= X-SA-Exim-Connect-IP: 98.207.153.68 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP * 1.5 XMNoVowels Alpha-numberic number with no vowels * 0.0 T_TM2_M_HEADER_IN_MSG BODY: T_TM2_M_HEADER_IN_MSG * -3.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0030] * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa06 1397; Body=1 Fuz1=1 Fuz2=1] * 0.0 T_TooManySym_01 4+ unique symbols in subject X-Spam-DCC: XMission; sa06 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: ; X-Spam-Relay-Country: Subject: [PATCH 12/21] userns: Implement sk_user_ns X-Spam-Flag: No X-SA-Exim-Version: 4.2.1 (built Fri, 06 Aug 2010 16:31:04 -0600) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Eric W. Biederman" Add a helper sk_user_ns to make it easy to find the user namespace of the process that opened a socket. Acked-by: Serge Hallyn Signed-off-by: Eric W. Biederman --- include/net/sock.h | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/include/net/sock.h b/include/net/sock.h index 65c3d62..9d43736 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -604,6 +604,15 @@ static inline void sk_add_bind_node(struct sock *sk, #define sk_for_each_bound(__sk, node, list) \ hlist_for_each_entry(__sk, node, list, sk_bind_node) +static inline struct user_namespace *sk_user_ns(struct sock *sk) +{ + /* Careful only use this in a context where these parameters + * can not change and must all be valid, such as recvmsg from + * userspace. + */ + return sk->sk_socket->file->f_cred->user_ns; +} + /* Sock flags */ enum sock_flags { SOCK_DEAD, -- 1.7.5.4