From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932983AbcFOSP5 (ORCPT ); Wed, 15 Jun 2016 14:15:57 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:37477 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753345AbcFOSOK (ORCPT ); Wed, 15 Jun 2016 14:14:10 -0400 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Masami Hiramatsu , Ananth N Mavinakayanahalli , Brendan Gregg , Hemant Kumar , Namhyung Kim , Peter Zijlstra , Arnaldo Carvalho de Melo Subject: [PATCH 02/19] perf tools: Fix rm_rf() to handle non-regular files correctly Date: Wed, 15 Jun 2016 15:13:11 -0300 Message-Id: <1466014408-12086-3-git-send-email-acme@kernel.org> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1466014408-12086-1-git-send-email-acme@kernel.org> References: <1466014408-12086-1-git-send-email-acme@kernel.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Masami Hiramatsu Fix rm_rf() to handle non-regular files correctly. This fix includes two changes; - Fix to use lstat(3) instead of stat(3) since if the target file is a symbolic link, rm_rf() should unlink the symbolic link itself, not the file which pointed by the symlink. - Fix to unlink non-regular files (except for directory), including symlink. Even though the first one fixes to stat symlink itself, without second fix, it still failed because the symlink is not a regular file. Signed-off-by: Masami Hiramatsu Cc: Ananth N Mavinakayanahalli Cc: Brendan Gregg Cc: Hemant Kumar Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20160608092911.3116.90929.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/util.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 23504ad5d6dd..e08b9a092a23 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -97,20 +97,17 @@ int rm_rf(char *path) scnprintf(namebuf, sizeof(namebuf), "%s/%s", path, d->d_name); - ret = stat(namebuf, &statbuf); + /* We have to check symbolic link itself */ + ret = lstat(namebuf, &statbuf); if (ret < 0) { pr_debug("stat failed: %s\n", namebuf); break; } - if (S_ISREG(statbuf.st_mode)) - ret = unlink(namebuf); - else if (S_ISDIR(statbuf.st_mode)) + if (S_ISDIR(statbuf.st_mode)) ret = rm_rf(namebuf); - else { - pr_debug("unknown file: %s\n", namebuf); - ret = -1; - } + else + ret = unlink(namebuf); } closedir(dir); -- 2.5.5