lkml.org 
[lkml]   [2014]   [May]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Subject[PATCH (for 3.15) 2/5] SELinux: Handle the rename flags.
From
Date
>From 39e4aea3b42b53d844c87f6c7e54f0a9837ebbfd Mon Sep 17 00:00:00 2001
From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Date: Mon, 12 May 2014 21:34:36 +0900
Subject: [PATCH (for 3.15) 2/5] SELinux: Handle the rename flags.

For SELinux, the RENAME_EXCHANGE flag means "check permissions with
reversed arguments".

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
---
security/selinux/hooks.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 33f6f56..64d8497 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -2752,7 +2752,10 @@ static int selinux_inode_rename(struct inode *old_inode, struct dentry *old_dent
struct inode *new_inode, struct dentry *new_dentry,
unsigned int flags)
{
- return may_rename(old_inode, old_dentry, new_inode, new_dentry);
+ int err = may_rename(old_inode, old_dentry, new_inode, new_dentry);
+ if (!err && (flags & RENAME_EXCHANGE))
+ err = may_rename(new_inode, new_dentry, old_inode, old_dentry);
+ return err;
}

static int selinux_inode_readlink(struct dentry *dentry)
--
1.7.1

\
 
 \ /
  Last update: 2014-05-12 16:01    [W:0.409 / U:0.148 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site