/* key.c: basic authentication token and access key management
*
- * Copyright (C) 2004-5 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/slab.h>
+#include <linux/security.h>
#include <linux/workqueue.h>
#include <linux/err.h>
#include "internal.h"
found:
atomic_inc(&user->usage);
spin_unlock(&key_user_lock);
- if (candidate)
- kfree(candidate);
+ kfree(candidate);
out:
return user;
struct key_user *user = NULL;
struct key *key;
size_t desclen, quotalen;
+ int ret;
key = ERR_PTR(-EINVAL);
if (!desc || !*desc)
key->flags = 0;
key->expiry = 0;
key->payload.data = NULL;
+ key->security = NULL;
if (!not_in_quota)
key->flags |= 1 << KEY_FLAG_IN_QUOTA;
key->magic = KEY_DEBUG_MAGIC;
#endif
+ /* let the security module know about the key */
+ ret = security_key_alloc(key);
+ if (ret < 0)
+ goto security_error;
+
/* publish the key by giving it a serial number */
atomic_inc(&user->nkeys);
key_alloc_serial(key);
- error:
+error:
return key;
- no_memory_3:
+security_error:
+ kfree(key->description);
+ kmem_cache_free(key_jar, key);
+ if (!not_in_quota) {
+ spin_lock(&user->lock);
+ user->qnkeys--;
+ user->qnbytes -= quotalen;
+ spin_unlock(&user->lock);
+ }
+ key_user_put(user);
+ key = ERR_PTR(ret);
+ goto error;
+
+no_memory_3:
kmem_cache_free(key_jar, key);
- no_memory_2:
+no_memory_2:
if (!not_in_quota) {
spin_lock(&user->lock);
user->qnkeys--;
spin_unlock(&user->lock);
}
key_user_put(user);
- no_memory_1:
+no_memory_1:
key = ERR_PTR(-ENOMEM);
goto error;
- no_quota:
+no_quota:
spin_unlock(&user->lock);
key_user_put(user);
key = ERR_PTR(-EDQUOT);
key_check(key);
+ security_key_free(key);
+
/* deal with the user's key tracking and quota */
if (test_bit(KEY_FLAG_IN_QUOTA, &key->flags)) {
spin_lock(&key->user->lock);
int ret;
/* need write permission on the key to update it */
- ret = -EACCES;
- if (!key_permission(key_ref, KEY_WRITE))
+ ret = key_permission(key_ref, KEY_WRITE);
+ if (ret < 0)
goto error;
ret = -EEXIST;
down_write(&key->sem);
ret = key->type->update(key, payload, plen);
-
if (ret == 0)
/* updating a negative key instantiates it */
clear_bit(KEY_FLAG_NEGATIVE, &key->flags);
/* if we're going to allocate a new key, we're going to have
* to modify the keyring */
- key_ref = ERR_PTR(-EACCES);
- if (!key_permission(keyring_ref, KEY_WRITE))
+ ret = key_permission(keyring_ref, KEY_WRITE);
+ if (ret < 0) {
+ key_ref = ERR_PTR(ret);
goto error_3;
+ }
/* search for an existing key of the same type and description in the
* destination keyring
goto found_matching_key;
/* decide on the permissions we want */
- perm = KEY_POS_VIEW | KEY_POS_SEARCH | KEY_POS_LINK;
- perm |= KEY_USR_VIEW | KEY_USR_SEARCH | KEY_USR_LINK;
+ perm = KEY_POS_VIEW | KEY_POS_SEARCH | KEY_POS_LINK | KEY_POS_SETATTR;
+ perm |= KEY_USR_VIEW | KEY_USR_SEARCH | KEY_USR_LINK | KEY_USR_SETATTR;
if (ktype->read)
perm |= KEY_POS_READ | KEY_USR_READ;
key_check(key);
/* the key must be writable */
- ret = -EACCES;
- if (!key_permission(key_ref, KEY_WRITE))
+ ret = key_permission(key_ref, KEY_WRITE);
+ if (ret < 0)
goto error;
/* attempt to update it if supported */
ret = -EOPNOTSUPP;
if (key->type->update) {
down_write(&key->sem);
- ret = key->type->update(key, payload, plen);
+ ret = key->type->update(key, payload, plen);
if (ret == 0)
/* updating a negative key instantiates it */
clear_bit(KEY_FLAG_NEGATIVE, &key->flags);