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-rw-r--r--security/integrity/ima/ima_iint.c149
1 files changed, 0 insertions, 149 deletions
diff --git a/security/integrity/ima/ima_iint.c b/security/integrity/ima/ima_iint.c
deleted file mode 100644
index fa592ff1ac1..00000000000
--- a/security/integrity/ima/ima_iint.c
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * Copyright (C) 2008 IBM Corporation
- *
- * Authors:
- * 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.
- *
- * File: ima_iint.c
- * - implements the IMA hooks: ima_inode_alloc, ima_inode_free
- * - cache integrity information associated with an inode
- * using a radix tree.
- */
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/radix-tree.h>
-#include "ima.h"
-
-RADIX_TREE(ima_iint_store, GFP_ATOMIC);
-DEFINE_SPINLOCK(ima_iint_lock);
-
-static struct kmem_cache *iint_cache __read_mostly;
-
-/* ima_iint_find_get - return the iint associated with an inode
- *
- * ima_iint_find_get gets a reference to the iint. Caller must
- * remember to put the iint reference.
- */
-struct ima_iint_cache *ima_iint_find_get(struct inode *inode)
-{
- struct ima_iint_cache *iint;
-
- rcu_read_lock();
- iint = radix_tree_lookup(&ima_iint_store, (unsigned long)inode);
- if (!iint)
- goto out;
- kref_get(&iint->refcount);
-out:
- rcu_read_unlock();
- return iint;
-}
-
-/**
- * ima_inode_alloc - allocate an iint associated with an inode
- * @inode: pointer to the inode
- */
-int ima_inode_alloc(struct inode *inode)
-{
- struct ima_iint_cache *iint = NULL;
- int rc = 0;
-
- if (!ima_initialized)
- return 0;
-
- iint = kmem_cache_alloc(iint_cache, GFP_NOFS);
- if (!iint)
- return -ENOMEM;
-
- rc = radix_tree_preload(GFP_NOFS);
- if (rc < 0)
- goto out;
-
- spin_lock(&ima_iint_lock);
- rc = radix_tree_insert(&ima_iint_store, (unsigned long)inode, iint);
- spin_unlock(&ima_iint_lock);
-out:
- if (rc < 0)
- kmem_cache_free(iint_cache, iint);
-
- radix_tree_preload_end();
-
- return rc;
-}
-
-/* iint_free - called when the iint refcount goes to zero */
-void iint_free(struct kref *kref)
-{
- struct ima_iint_cache *iint = container_of(kref, struct ima_iint_cache,
- refcount);
- iint->version = 0;
- iint->flags = 0UL;
- if (iint->readcount != 0) {
- printk(KERN_INFO "%s: readcount: %ld\n", __FUNCTION__,
- iint->readcount);
- iint->readcount = 0;
- }
- if (iint->writecount != 0) {
- printk(KERN_INFO "%s: writecount: %ld\n", __FUNCTION__,
- iint->writecount);
- iint->writecount = 0;
- }
- if (iint->opencount != 0) {
- printk(KERN_INFO "%s: opencount: %ld\n", __FUNCTION__,
- iint->opencount);
- iint->opencount = 0;
- }
- kref_set(&iint->refcount, 1);
- kmem_cache_free(iint_cache, iint);
-}
-
-void iint_rcu_free(struct rcu_head *rcu_head)
-{
- struct ima_iint_cache *iint = container_of(rcu_head,
- struct ima_iint_cache, rcu);
- kref_put(&iint->refcount, iint_free);
-}
-
-/**
- * ima_inode_free - called on security_inode_free
- * @inode: pointer to the inode
- *
- * Free the integrity information(iint) associated with an inode.
- */
-void ima_inode_free(struct inode *inode)
-{
- struct ima_iint_cache *iint;
-
- if (!ima_initialized)
- return;
- spin_lock(&ima_iint_lock);
- iint = radix_tree_delete(&ima_iint_store, (unsigned long)inode);
- spin_unlock(&ima_iint_lock);
- if (iint)
- call_rcu(&iint->rcu, iint_rcu_free);
-}
-
-static void init_once(void *foo)
-{
- struct ima_iint_cache *iint = foo;
-
- memset(iint, 0, sizeof *iint);
- iint->version = 0;
- iint->flags = 0UL;
- mutex_init(&iint->mutex);
- iint->readcount = 0;
- iint->writecount = 0;
- iint->opencount = 0;
- kref_set(&iint->refcount, 1);
-}
-
-void __init ima_iintcache_init(void)
-{
- iint_cache =
- kmem_cache_create("iint_cache", sizeof(struct ima_iint_cache), 0,
- SLAB_PANIC, init_once);
-}