linux-kernel - [PATCH 01/11] cgroup: allow subsystems to create files for sane

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <52148F62.5060409@huawei.com>
Date:	Wed, 21 Aug 2013 17:58:58 +0800
From:	Li Zefan <lizefan@...wei.com>
To:	Tejun Heo <tj@...nel.org>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Cgroups <cgroups@...r.kernel.org>,
	Containers <containers@...ts.linux-foundation.org>
Subject: [PATCH 01/11] cgroup: allow subsystems to create files for sane_behavior
 only

So we can add new cgroupfs interfaces for sane_behavior only.

Signed-off-by: Li Zefan <lizefan@...wei.com>
---
 include/linux/cgroup.h | 1 +
 kernel/cgroup.c        | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 3aac34d..7ba7764 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -411,6 +411,7 @@ enum {
 	CFTYPE_ONLY_ON_ROOT	= (1 << 0),	/* only create on root cgrp */
 	CFTYPE_NOT_ON_ROOT	= (1 << 1),	/* don't create on root cgrp */
 	CFTYPE_INSANE		= (1 << 2),	/* don't create if sane_behavior */
+	CFTYPE_SANE		= (1 << 3),	/* only create if sane_behavior */
 };
 
 #define MAX_CFTYPE_NAME		64
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 737d752..6c770ee 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2809,6 +2809,8 @@ static int cgroup_addrm_files(struct cgroup *cgrp, struct cftype cfts[],
 		/* does cft->flags tell us to skip this file on @cgrp? */
 		if ((cft->flags & CFTYPE_INSANE) && cgroup_sane_behavior(cgrp))
 			continue;
+		if ((cft->flags & CFTYPE_SANE) && !cgroup_sane_behavior(cgrp))
+			continue;
 		if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgrp->parent)
 			continue;
 		if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgrp->parent)
-- 
1.8.0.2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/