keys: make the keyring quotas controllable through /proc/sys

[linux-2.6-omap-h63xx.git] / security / keys / internal.h

diff --git a/security/keys/internal.h b/security/keys/internal.h
index 7d894ef70370bcb2c4906447c22965ba829a1e2a..8c05587f5018b49147bf44ed5f4ad846a173573b 100644 (file)
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -57,10 +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;
@@ -68,6 +64,16 @@ 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;
@@ -77,8 +83,6 @@ 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,
@@ -102,14 +106,15 @@ 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,
+                                       const void *callout_info,
+                                       size_t callout_len,
                                        void *aux,
                                        struct key *dest_keyring,
                                        unsigned long flags);
@@ -120,13 +125,15 @@ extern struct key *request_key_and_link(struct key_type *type,
 struct request_key_auth {
        struct key              *target_key;
        struct task_struct      *context;
-       char                    *callout_info;
+       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,
-                                       const char *callout_info);
+                                       const void *callout_info,
+                                       size_t callout_len);
 
 extern struct key *key_get_instantiation_authkey(key_serial_t target_id);
 
@@ -152,7 +159,8 @@ 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