linux-kernel - [PATCH 13/15] ima: inode post

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Date:	Thu, 24 Jun 2010 14:10:29 -0400
From:	Mimi Zohar <zohar@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	linux-security-module@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, James Morris <jmorris@...ei.org>,
	David Safford <safford@...son.ibm.com>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Mimi Zohar <zohar@...ibm.com>
Subject: [PATCH 13/15] ima: inode post_setattr

Changing an inode's metadata may result in our not needing to
appraise the file.  In such cases, we must remove 'security.ima'.

Signed-off-by: Mimi Zohar <zohar@...ibm.com>
Acked-by: Serge Hallyn <serue@...ibm.com>
---
 fs/attr.c           |    2 ++
 include/linux/ima.h |    6 ++++++
 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/fs/attr.c b/fs/attr.c
index 9293710..f410bde 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -14,6 +14,7 @@
 #include <linux/fcntl.h>
 #include <linux/security.h>
 #include <linux/evm.h>
+#include <linux/ima.h>
 
 /* Taken over from the old code... */
 
@@ -251,6 +252,7 @@ int notify_change(struct dentry * dentry, struct iattr * attr)
 
 	if (!error) {
 		fsnotify_change(dentry, ia_valid);
+		ima_inode_post_setattr(dentry);
 		evm_inode_post_setattr(dentry, ia_valid);
 	}
 
diff --git a/include/linux/ima.h b/include/linux/ima.h
index 4dce900..ce82e29 100644
--- a/include/linux/ima.h
+++ b/include/linux/ima.h
@@ -19,6 +19,7 @@ extern int ima_file_check(struct file *file, int mask);
 extern void ima_file_free(struct file *file);
 extern int ima_file_mmap(struct file *file, unsigned long prot);
 extern void ima_counts_get(struct file *file);
+extern void ima_inode_post_setattr(struct dentry *dentry);
 
 #else
 static inline int ima_bprm_check(struct linux_binprm *bprm)
@@ -46,5 +47,10 @@ static inline void ima_counts_get(struct file *file)
 	return;
 }
 
+static inline void ima_inode_post_setattr(struct dentry *dentry)
+{
+	return;
+}
+
 #endif /* CONFIG_IMA_H */
 #endif /* _LINUX_IMA_H */
-- 
1.6.6.1

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