integrity: move ima inode integrity data management

Move the inode integrity data(iint) management up to the integrity directory
in order to share the iint among the different integrity models.

Changelog:
- don't define MAX_DIGEST_SIZE
- rename several globally visible 'ima_' prefixed functions, structs,
  locks, etc to 'integrity_'
- replace '20' with SHA1_DIGEST_SIZE
- reflect location change in appropriate Kconfig and Makefiles
- remove unnecessary initialization of iint_initialized to 0
- rebased on current ima_iint.c
- define integrity_iint_store/lock as static

There should be no other functional changes.

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Acked-by: Serge Hallyn <serge.hallyn@ubuntu.com>

2 files changed, 30 insertions, 13 deletions

diff --git a/include/linux/ima.h b/include/linux/ima.h
index 09e6e62f9953..6ac8e50c6cf5 100644
--- a/include/linux/ima.h
+++ b/include/linux/ima.h
@@ -15,8 +15,6 @@ struct linux_binprm;
 
 #ifdef CONFIG_IMA
 extern int ima_bprm_check(struct linux_binprm *bprm);
-extern int ima_inode_alloc(struct inode *inode);
-extern void ima_inode_free(struct inode *inode);
 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);
@@ -27,16 +25,6 @@ static inline int ima_bprm_check(struct linux_binprm *bprm)
         return 0;
 }
 
-static inline int ima_inode_alloc(struct inode *inode)
-{
-        return 0;
-}
-
-static inline void ima_inode_free(struct inode *inode)
-{
-        return;
-}
-
 static inline int ima_file_check(struct file *file, int mask)
 {
         return 0;
@@ -51,6 +39,5 @@ static inline int ima_file_mmap(struct file *file, unsigned long prot)
 {
         return 0;
 }
-
 #endif /* CONFIG_IMA_H */
 #endif /* _LINUX_IMA_H */
diff --git a/include/linux/integrity.h b/include/linux/integrity.h
new file mode 100644
index 000000000000..905981247327
--- /dev/null
+++ b/include/linux/integrity.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2009 IBM Corporation
+ * Author: Mimi Zohar <zohar@us.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ */
+
+#ifndef _LINUX_INTEGRITY_H
+#define _LINUX_INTEGRITY_H
+
+#include <linux/fs.h>
+
+#ifdef CONFIG_INTEGRITY
+extern int integrity_inode_alloc(struct inode *inode);
+extern void integrity_inode_free(struct inode *inode);
+
+#else
+static inline int integrity_inode_alloc(struct inode *inode)
+{
+        return 0;
+}
+
+static inline void integrity_inode_free(struct inode *inode)
+{
+        return;
+}
+#endif /* CONFIG_INTEGRITY_H */
+#endif /* _LINUX_INTEGRITY_H */