[RFC PATCH 14/15] security: move ima_file_check() to lsm hook

[Eric Paris <eparis@redhat.com>]

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

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

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