Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

[safe/jmp/linux-2.6] / security / keys / internal.h

diff --git a/security/keys/internal.h b/security/keys/internal.h
index 39cba97..b39f5c2 100644 (file)
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -1,6 +1,6 @@
 /* internal.h: authentication token and access key management internal defs
  *
- * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2003-5, 2007 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells (dhowells@redhat.com)
  *
  * This program is free software; you can redistribute it and/or
@@ -12,17 +12,28 @@
 #ifndef _INTERNAL_H
 #define _INTERNAL_H
 
-#include <linux/key.h>
+#include <linux/key-type.h>
 #include <linux/key-ui.h>
 
-#if 0
-#define kenter(FMT, a...)      printk("==> %s("FMT")\n",__FUNCTION__ , ## a)
-#define kleave(FMT, a...)      printk("<== %s()"FMT"\n",__FUNCTION__ , ## a)
-#define kdebug(FMT, a...)      printk(FMT"\n" , ## a)
+static inline __attribute__((format(printf, 1, 2)))
+void no_printk(const char *fmt, ...)
+{
+}
+
+#ifdef __KDEBUG
+#define kenter(FMT, ...) \
+       printk(KERN_DEBUG "==> %s("FMT")\n", __func__, ##__VA_ARGS__)
+#define kleave(FMT, ...) \
+       printk(KERN_DEBUG "<== %s()"FMT"\n", __func__, ##__VA_ARGS__)
+#define kdebug(FMT, ...) \
+       printk(KERN_DEBUG "xxx" FMT"yyy\n", ##__VA_ARGS__)
 #else
-#define kenter(FMT, a...)      do {} while(0)
-#define kleave(FMT, a...)      do {} while(0)
-#define kdebug(FMT, a...)      do {} while(0)
+#define kenter(FMT, ...) \
+       no_printk(KERN_DEBUG "==> %s("FMT")\n", __func__, ##__VA_ARGS__)
+#define kleave(FMT, ...) \
+       no_printk(KERN_DEBUG "<== %s()"FMT"\n", __func__, ##__VA_ARGS__)
+#define kdebug(FMT, ...) \
+       no_printk(KERN_DEBUG FMT"\n", ##__VA_ARGS__)
 #endif
 
 extern struct key_type key_type_user;
@@ -36,7 +47,7 @@ extern struct key_type key_type_user;
  */
 struct key_user {
        struct rb_node          node;
-       struct list_head        consq;          /* construction queue */
+       struct mutex            cons_lock;      /* construction initiation lock */
        spinlock_t              lock;
        atomic_t                usage;          /* for accessing qnkeys & qnbytes */
        atomic_t                nkeys;          /* number of keys */
@@ -46,10 +57,6 @@ struct key_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;
@@ -57,17 +64,24 @@ 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);
 
+/*
+ * key quota limits
+ * - root has its own separate limits to everyone else
+ */
+extern unsigned key_quota_root_maxkeys;
+extern unsigned key_quota_root_maxbytes;
+extern unsigned key_quota_maxkeys;
+extern unsigned key_quota_maxbytes;
+
+#define KEYQUOTA_LINK_BYTES    4               /* a link in a keyring is worth 4 bytes */
 
 
 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 struct mutex key_construction_mutex;
 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 key_ref_t __keyring_search_one(key_ref_t keyring_ref,
@@ -91,15 +105,18 @@ extern key_ref_t search_process_keyrings(struct key_type *type,
                                         key_match_func_t match,
                                         struct task_struct *tsk);
 
-extern struct key *find_keyring_by_name(const char *name, key_serial_t bound);
+extern struct key *find_keyring_by_name(const char *name, bool skip_perm_check);
 
 extern int install_thread_keyring(struct task_struct *tsk);
 extern int install_process_keyring(struct task_struct *tsk);
 
 extern struct key *request_key_and_link(struct key_type *type,
                                        const char *description,
-                                       const char *callout_info,
-                                       struct key *dest_keyring);
+                                       const void *callout_info,
+                                       size_t callout_len,
+                                       void *aux,
+                                       struct key *dest_keyring,
+                                       unsigned long flags);
 
 /*
  * request_key authorisation
@@ -107,12 +124,15 @@ extern struct key *request_key_and_link(struct key_type *type,
 struct request_key_auth {
        struct key              *target_key;
        struct task_struct      *context;
+       void                    *callout_info;
+       size_t                  callout_len;
        pid_t                   pid;
 };
 
 extern struct key_type key_type_request_key_auth;
 extern struct key *request_key_auth_new(struct key *target,
-                                       struct key **_rkakey);
+                                       const void *callout_info,
+                                       size_t callout_len);
 
 extern struct key *key_get_instantiation_authkey(key_serial_t target_id);
 
@@ -136,7 +156,10 @@ 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);
 extern long keyctl_set_reqkey_keyring(int);
-
+extern long keyctl_set_timeout(key_serial_t, unsigned);
+extern long keyctl_assume_authority(key_serial_t);
+extern long keyctl_get_security(key_serial_t keyid, char __user *buffer,
+                               size_t buflen);
 
 /*
  * debugging key validation