From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758730Ab2FZQgF (ORCPT ); Tue, 26 Jun 2012 12:36:05 -0400 Received: from mail-gh0-f174.google.com ([209.85.160.174]:39316 "EHLO mail-gh0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758703Ab2FZQfx (ORCPT ); Tue, 26 Jun 2012 12:35:53 -0400 From: Jeff Layton To: eparis@redhat.com, viro@zeniv.linux.org.uk Cc: linux-audit@redhat.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 7/9] audit: make audit_compare_dname_path use parent_len helper Date: Tue, 26 Jun 2012 12:35:35 -0400 Message-Id: <1340728537-25599-8-git-send-email-jlayton@redhat.com> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: <1340728537-25599-1-git-send-email-jlayton@redhat.com> References: <1340728537-25599-1-git-send-email-jlayton@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Eric Paris Signed-off-by: Eric Paris --- kernel/auditfilter.c | 27 +++++++-------------------- 1 files 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); } -- 1.7.7.6