aboutsummaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
authorDavid Howells <dhowells@redhat.com>2013-09-24 10:35:18 +0100
committerDavid Howells <dhowells@redhat.com>2013-09-24 10:35:18 +0100
commitb2a4df200d570b2c33a57e1ebfa5896e4bc81b69 (patch)
tree7fa48ae3c5ecff90d6d1f662fd91af5ddf74d56d /include
parent3cb989501c2688cacbb7dc4b0d353faf838f53a1 (diff)
KEYS: Expand the capacity of a keyring
Expand the capacity of a keyring to be able to hold a lot more keys by using the previously added associative array implementation. Currently the maximum capacity is: (PAGE_SIZE - sizeof(header)) / sizeof(struct key *) which, on a 64-bit system, is a little more 500. However, since this is being used for the NFS uid mapper, we need more than that. The new implementation gives us effectively unlimited capacity. With some alterations, the keyutils testsuite runs successfully to completion after this patch is applied. The alterations are because (a) keyrings that are simply added to no longer appear ordered and (b) some of the errors have changed a bit. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/keys/keyring-type.h17
-rw-r--r--include/linux/key.h13
2 files changed, 10 insertions, 20 deletions
diff --git a/include/keys/keyring-type.h b/include/keys/keyring-type.h
index cf49159b0e3a..fca5c62340a4 100644
--- a/include/keys/keyring-type.h
+++ b/include/keys/keyring-type.h
@@ -1,6 +1,6 @@
/* Keyring key type
*
- * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2008, 2013 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
@@ -13,19 +13,6 @@
#define _KEYS_KEYRING_TYPE_H
#include <linux/key.h>
-#include <linux/rcupdate.h>
-
-/*
- * the keyring payload contains a list of the keys to which the keyring is
- * subscribed
- */
-struct keyring_list {
- struct rcu_head rcu; /* RCU deletion hook */
- unsigned short maxkeys; /* max keys this list can hold */
- unsigned short nkeys; /* number of keys currently held */
- unsigned short delkey; /* key to be unlinked by RCU */
- struct key __rcu *keys[0];
-};
-
+#include <linux/assoc_array.h>
#endif /* _KEYS_KEYRING_TYPE_H */
diff --git a/include/linux/key.h b/include/linux/key.h
index ef596c7af585..2417f789d29b 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -22,6 +22,7 @@
#include <linux/sysctl.h>
#include <linux/rwsem.h>
#include <linux/atomic.h>
+#include <linux/assoc_array.h>
#ifdef __KERNEL__
#include <linux/uidgid.h>
@@ -196,11 +197,13 @@ struct key {
* whatever
*/
union {
- unsigned long value;
- void __rcu *rcudata;
- void *data;
- struct keyring_list __rcu *subscriptions;
- } payload;
+ union {
+ unsigned long value;
+ void __rcu *rcudata;
+ void *data;
+ } payload;
+ struct assoc_array keys;
+ };
};
extern struct key *key_alloc(struct key_type *type,

Privacy Policy