linux-kernel - [RFC PATCH 14/15] security: move ima_file

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Date:	Fri, 04 Dec 2009 15:48:32 -0500
From:	Eric Paris <eparis@...hat.com>
To:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Cc:	viro@...iv.linux.org.uk, jmorris@...ei.org, npiggin@...e.de,
	eparis@...hat.com, zohar@...ibm.com, jack@...e.cz,
	jmalicki@...acarta.com, dsmith@...hat.com, serue@...ibm.com,
	hch@....de, john@...nmccutchan.com, rlove@...ve.org,
	ebiederm@...ssion.com, heiko.carstens@...ibm.com,
	penguin-kernel@...ove.SAKURA.ne.jp, mszeredi@...e.cz,
	jens.axboe@...cle.com, akpm@...ux-foundation.org, matthew@....cx,
	hugh.dickins@...cali.co.uk, kamezawa.hiroyu@...fujitsu.com,
	nishimura@....nes.nec.co.jp, davem@...emloft.net, arnd@...db.de,
	eric.dumazet@...il.com
Subject: [RFC PATCH 14/15] security: move ima_file_check() to lsm hook

From: Mimi Zohar <zohar@...ux.vnet.ibm.com>

Move the ima_file_check() hook from the vfs into the LSM hook.

Signed-off-by: Mimi Zohar <zohar@...ux.vnet.ibm.com>
Signed-off-by: Eric Paris <eparis@...hat.com>
---

 fs/open.c           |    7 -------
 security/security.c |    8 +++++++-
 2 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/fs/open.c b/fs/open.c
index 10bd04e..25c1436 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -30,7 +30,6 @@
 #include <linux/audit.h>
 #include <linux/falloc.h>
 #include <linux/fs_struct.h>
-#include <linux/ima.h>
 
 #include "internal.h"
 
@@ -875,12 +874,6 @@ static struct file *__dentry_open(struct dentry *dentry, struct vfsmount *mnt,
 		}
 	}
 
-	error = ima_file_check(f);
-	if (error) {
-		fput(f);
-		f = ERR_PTR(error);
-	}
-
 	return f;
 
 cleanup_all:
diff --git a/security/security.c b/security/security.c
index fd2d450..a42586b 100644
--- a/security/security.c
+++ b/security/security.c
@@ -722,7 +722,13 @@ int security_file_receive(struct file *file)
 
 int security_dentry_open(struct file *file, const struct cred *cred)
 {
-	return security_ops->dentry_open(file, cred);
+	int ret;
+
+	ret = security_ops->dentry_open(file, cred);
+	if (ret)
+		return ret;
+
+	return ima_file_check(file);
 }
 
 int security_task_create(unsigned long clone_flags)

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