From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965381Ab3BMSEl (ORCPT ); Wed, 13 Feb 2013 13:04:41 -0500 Received: from out01.mta.xmission.com ([166.70.13.231]:34425 "EHLO out01.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965242Ab3BMSC7 (ORCPT ); Wed, 13 Feb 2013 13:02:59 -0500 From: "Eric W. Biederman" To: Cc: Linux Containers , , "Serge E. Hallyn" , "Eric W. Biederman" , "J. Bruce Fields" , Trond Myklebust Date: Wed, 13 Feb 2013 09:51:58 -0800 Message-Id: <1360777934-5663-69-git-send-email-ebiederm@xmission.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1360777934-5663-1-git-send-email-ebiederm@xmission.com> References: <87621w14vs.fsf@xmission.com> <1360777934-5663-1-git-send-email-ebiederm@xmission.com> X-XM-AID: U2FsdGVkX19jZuqNr/ruYIDv/n0YiLMP1HursC2vbRE= 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 * 0.1 XMSubLong Long Subject * 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: 0.0018] * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa03 1397; Body=1 Fuz1=1 Fuz2=1] * 0.0 T_TooManySym_01 4+ unique symbols in subject * 0.0 T_XMDrugObfuBody_08 obfuscated drug references X-Spam-DCC: XMission; sa03 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: ; X-Spam-Relay-Country: Subject: [PATCH review 69/85] nfsd: Modify nfsd4_cb_sec to use kuids and kgids X-Spam-Flag: No X-SA-Exim-Version: 4.2.1 (built Wed, 14 Nov 2012 14:26:46 -0700) 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" Change uid and gid in struct nfsd4_cb_sec to be of type kuid_t and kgid_t. In nfsd4_decode_cb_sec when reading uids and gids off the wire convert them to kuids and kgids, and if they don't convert to valid kuids or valid kuids ignore RPC_AUTH_UNIX and don't fill in any of the fields. Cc: "J. Bruce Fields" Cc: Trond Myklebust Signed-off-by: "Eric W. Biederman" --- fs/nfsd/nfs4xdr.c | 13 ++++++++++--- fs/nfsd/state.h | 4 ++-- 2 files changed, 12 insertions(+), 5 deletions(-) diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 3812b06..2d1d06b 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -464,9 +464,16 @@ static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_ READ32(dummy); READ_BUF(dummy * 4); if (cbs->flavor == (u32)(-1)) { - cbs->uid = uid; - cbs->gid = gid; - cbs->flavor = RPC_AUTH_UNIX; + kuid_t kuid = make_kuid(&init_user_ns, uid); + kgid_t kgid = make_kgid(&init_user_ns, gid); + if (uid_valid(kuid) && gid_valid(kgid)) { + cbs->uid = kuid; + cbs->gid = kgid; + cbs->flavor = RPC_AUTH_UNIX; + } else { + dprintk("RPC_AUTH_UNIX with invalid" + "uid or gid ignoring!\n"); + } } break; case RPC_AUTH_GSS: diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index d1c229f..1a8c739 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -152,8 +152,8 @@ struct nfsd4_channel_attrs { struct nfsd4_cb_sec { u32 flavor; /* (u32)(-1) used to mean "no valid flavor" */ - u32 uid; - u32 gid; + kuid_t uid; + kgid_t gid; }; struct nfsd4_create_session { -- 1.7.5.4