From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Layton Subject: [PATCH v7 08/49] audit: make audit_compare_dname_path use parent_len helper Date: Mon, 1 Oct 2012 20:16:17 -0400 Message-ID: <1349137018-21948-9-git-send-email-jlayton@redhat.com> References: <1349137018-21948-1-git-send-email-jlayton@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.redhat.com (ext-mx13.extmail.prod.ext.phx2.redhat.com [10.5.110.18]) by int-mx12.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id q920HHsb028268 for ; Mon, 1 Oct 2012 20:17:17 -0400 Received: from mail-gg0-f174.google.com (mail-gg0-f174.google.com [209.85.161.174]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q920H5PD018691 for ; Mon, 1 Oct 2012 20:17:16 -0400 Received: by mail-gg0-f174.google.com with SMTP id r5so1511468ggn.33 for ; Mon, 01 Oct 2012 17:17:16 -0700 (PDT) In-Reply-To: <1349137018-21948-1-git-send-email-jlayton@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-audit-bounces@redhat.com Errors-To: linux-audit-bounces@redhat.com To: viro@ZenIV.linux.org.uk Cc: linux-fsdevel@vger.kernel.org, linux-audit@redhat.com, linux-kernel@vger.kernel.org List-Id: linux-audit@redhat.com From: Eric Paris Signed-off-by: Eric Paris --- kernel/auditfilter.c | 27 +++++++-------------------- 1 file changed, 7 insertions(+), 20 deletions(-) diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c index f9c48d0..f47ba18 100644 --- a/kernel/auditfilter.c +++ b/kernel/auditfilter.c @@ -1232,32 +1232,19 @@ int parent_len(const char *path) * return of 0 indicates a match. */ int audit_compare_dname_path(const char *dname, const char *path) { - int dlen, plen; + int dlen, pathlen, parentlen; const char *p; - if (!dname || !path) - return 1; - dlen = strlen(dname); - plen = strlen(path); - if (plen < dlen) + pathlen = strlen(path); + if (pathlen < dlen) return 1; - /* disregard trailing slashes */ - p = path + plen - 1; - while ((*p == '/') && (p > path)) - p--; - - /* find last path component */ - p = p - dlen + 1; - if (p < path) + parentlen = parent_len(path); + if (pathlen - parentlen != dlen) return 1; - else if (p > path) { - if (*--p != '/') - return 1; - else - p++; - } + + p = path + parentlen; return strncmp(p, dname, dlen); } -- 1.7.11.4