Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 123 insertions, 0 deletions

diff --git a/security/keys/internal.h b/security/keys/internal.h
new file mode 100644
index 000000000000..67b2b93a7489
--- /dev/null
+++ b/security/keys/internal.h
@@ -0,0 +1,123 @@
+/* internal.h: authentication token and access key management internal defs
+ *
+ * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.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; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _INTERNAL_H
+#define _INTERNAL_H
+
+#include <linux/key.h>
+#include <linux/key-ui.h>
+
+extern struct key_type key_type_dead;
+extern struct key_type key_type_user;
+
+/*****************************************************************************/
+/*
+ * keep track of keys for a user
+ * - this needs to be separate to user_struct to avoid a refcount-loop
+ *   (user_struct pins some keyrings which pin this struct)
+ * - this also keeps track of keys under request from userspace for this UID
+ */
+struct key_user {
+        struct rb_node          node;
+        struct list_head        consq;          /* construction queue */
+        spinlock_t              lock;
+        atomic_t                usage;          /* for accessing qnkeys & qnbytes */
+        atomic_t                nkeys;          /* number of keys */
+        atomic_t                nikeys;         /* number of instantiated keys */
+        uid_t                   uid;
+        int                     qnkeys;         /* number of keys allocated to this user */
+        int                     qnbytes;        /* number of bytes allocated to this user */
+};
+
+#define KEYQUOTA_MAX_KEYS       100
+#define KEYQUOTA_MAX_BYTES      10000
+#define KEYQUOTA_LINK_BYTES     4               /* a link in a keyring is worth 4 bytes */
+
+extern struct rb_root   key_user_tree;
+extern spinlock_t       key_user_lock;
+extern struct key_user  root_key_user;
+
+extern struct key_user *key_user_lookup(uid_t uid);
+extern void key_user_put(struct key_user *user);
+
+
+
+extern struct rb_root key_serial_tree;
+extern spinlock_t key_serial_lock;
+extern struct semaphore key_alloc_sem;
+extern struct rw_semaphore key_construction_sem;
+extern wait_queue_head_t request_key_conswq;
+
+
+extern void keyring_publish_name(struct key *keyring);
+
+extern int __key_link(struct key *keyring, struct key *key);
+
+extern struct key *__keyring_search_one(struct key *keyring,
+                                        const struct key_type *type,
+                                        const char *description,
+                                        key_perm_t perm);
+
+typedef int (*key_match_func_t)(const struct key *, const void *);
+
+extern struct key *keyring_search_aux(struct key *keyring,
+                                      struct key_type *type,
+                                      const void *description,
+                                      key_match_func_t match);
+
+extern struct key *search_process_keyrings_aux(struct key_type *type,
+                                               const void *description,
+                                               key_match_func_t match);
+
+extern struct key *find_keyring_by_name(const char *name, key_serial_t bound);
+
+extern int install_thread_keyring(struct task_struct *tsk);
+
+/*
+ * keyctl functions
+ */
+extern long keyctl_get_keyring_ID(key_serial_t, int);
+extern long keyctl_join_session_keyring(const char __user *);
+extern long keyctl_update_key(key_serial_t, const void __user *, size_t);
+extern long keyctl_revoke_key(key_serial_t);
+extern long keyctl_keyring_clear(key_serial_t);
+extern long keyctl_keyring_link(key_serial_t, key_serial_t);
+extern long keyctl_keyring_unlink(key_serial_t, key_serial_t);
+extern long keyctl_describe_key(key_serial_t, char __user *, size_t);
+extern long keyctl_keyring_search(key_serial_t, const char __user *,
+                                  const char __user *, key_serial_t);
+extern long keyctl_read_key(key_serial_t, char __user *, size_t);
+extern long keyctl_chown_key(key_serial_t, uid_t, gid_t);
+extern long keyctl_setperm_key(key_serial_t, key_perm_t);
+extern long keyctl_instantiate_key(key_serial_t, const void __user *,
+                                   size_t, key_serial_t);
+extern long keyctl_negate_key(key_serial_t, unsigned, key_serial_t);
+
+
+/*
+ * debugging key validation
+ */
+#ifdef KEY_DEBUGGING
+extern void __key_check(const struct key *);
+
+static inline void key_check(const struct key *key)
+{
+        if (key && (IS_ERR(key) || key->magic != KEY_DEBUG_MAGIC))
+                __key_check(key);
+}
+
+#else
+
+#define key_check(key) do {} while(0)
+
+#endif
+
+#endif /* _INTERNAL_H */