From patchwork Wed Jul 22 13:03:18 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Andreas_Gr=C3=BCnbacher?= X-Patchwork-Id: 6843001 Return-Path: X-Original-To: patchwork-linux-fsdevel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 2B3959F380 for ; Wed, 22 Jul 2015 13:10:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 57C2B206CC for ; Wed, 22 Jul 2015 13:10:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6113A206B6 for ; Wed, 22 Jul 2015 13:10:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757009AbbGVNEr (ORCPT ); Wed, 22 Jul 2015 09:04:47 -0400 Received: from mail-wi0-f181.google.com ([209.85.212.181]:35999 "EHLO mail-wi0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756934AbbGVNEk (ORCPT ); Wed, 22 Jul 2015 09:04:40 -0400 Received: by wicgb10 with SMTP id gb10so97406661wic.1; Wed, 22 Jul 2015 06:04:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=zkWTuluatjR4flCQNGoiXzuB4iJmMHoBn7y6c6EPHr8=; b=MJMS+Y3yBRrs54hbCLn+r41Ctywm2jESDOMWfO1XKqfVmnaESQXpljGNMixDmMuuef utS8sFpKaStqiN2NQ9ZXDuOF+ePNEuHy8H323bcTwM38KWNP5rH1FToZsjgiDljkdHwF WQo0hoUteslS6vSCr01BH9F7gPoRaj48xo8qip6cBqWUgKl8ydPH5s8HHJG/C3sj5vRp taskea03mc4CZbVbXd1glVu3SoHx5wELzrRYOQgiQHoCEQmA3EnQXz4sANE4oXUcziv7 9EkO9qh9uK/JFkz9s1DmD9YSNfxnom77gCp8YrycXnQUSNIyj/x1D8s7Gi9F2bl6GqAR /lyA== X-Received: by 10.194.192.72 with SMTP id he8mr4985511wjc.11.1437570278390; Wed, 22 Jul 2015 06:04:38 -0700 (PDT) Received: from schleppi.home.com ([149.14.88.26]) by smtp.gmail.com with ESMTPSA id u7sm21992628wif.3.2015.07.22.06.04.37 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 22 Jul 2015 06:04:37 -0700 (PDT) From: Andreas Gruenbacher To: linux-kernel@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-api@vger.kernel.org, samba-technical@lists.samba.org, linux-security-module@vger.kernel.org, Andreas Gruenbacher Subject: [PATCH v5 28/39] nfsd: Keep list of acls to dispose of in compoundargs Date: Wed, 22 Jul 2015 15:03:18 +0200 Message-Id: <1437570209-29832-29-git-send-email-andreas.gruenbacher@gmail.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1437570209-29832-1-git-send-email-andreas.gruenbacher@gmail.com> References: <1437570209-29832-1-git-send-email-andreas.gruenbacher@gmail.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Spam-Status: No, score=-8.0 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Andreas Gruenbacher We will decode acls in requests into richacls. Even if unlikely, there can be more than one acl in a single request; those richacls need to be richacl_put() at the end of the request instead of kfree()d, so keep a list of acls in compoundargs for that. Signed-off-by: Andreas Gruenbacher --- fs/nfsd/nfs4xdr.c | 26 ++++++++++++++++++++++++++ fs/nfsd/xdr4.h | 6 ++++++ 2 files changed, 32 insertions(+) diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 5463385..819a670 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -40,6 +40,7 @@ #include #include #include +#include #include "idmap.h" #include "acl.h" @@ -196,6 +197,24 @@ svcxdr_tmpalloc(struct nfsd4_compoundargs *argp, u32 len) return tb->buf; } +static struct richacl * +svcxdr_alloc_richacl(struct nfsd4_compoundargs *argp, u32 nace) +{ + struct svcxdr_richacl *acls; + + acls = kmalloc(sizeof(*acls), GFP_KERNEL); + if (!acls) + return NULL; + acls->acl = richacl_alloc(nace, GFP_KERNEL); + if (!acls->acl) { + kfree(acls); + return NULL; + } + acls->next = argp->acls; + argp->acls = acls; + return acls->acl; +} + /* * For xdr strings that need to be passed to other kernel api's * as null-terminated strings. @@ -4394,6 +4413,12 @@ int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) args->to_free = tb->next; kfree(tb); } + while (args->acls) { + struct svcxdr_richacl *acls = args->acls; + args->acls = acls->next; + richacl_put(acls->acl); + kfree(acls); + } return 1; } @@ -4412,6 +4437,7 @@ nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_comp args->pagelen = rqstp->rq_arg.page_len; args->tmpp = NULL; args->to_free = NULL; + args->acls = NULL; args->ops = args->iops; args->rqstp = rqstp; diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index 9f99100..b698585 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -570,6 +570,11 @@ struct svcxdr_tmpbuf { char buf[]; }; +struct svcxdr_richacl { + struct svcxdr_richacl *next; + struct richacl *acl; +}; + struct nfsd4_compoundargs { /* scratch variables for XDR decode */ __be32 * p; @@ -579,6 +584,7 @@ struct nfsd4_compoundargs { __be32 tmp[8]; __be32 * tmpp; struct svcxdr_tmpbuf *to_free; + struct svcxdr_richacl *acls; struct svc_rqst *rqstp;