KEYS: Disperse linux/key_ui.h

Disperse the bits of linux/key_ui.h as the reason they were put here (keyfs) didn't get in. Signed-off-by: David Howells <[email protected]> Reviewed-by: James Morris <[email protected]> Signed-off-by: James Morris <[email protected]>
oohal · Nov 13, 2008 · e9e349b · e9e349b
1 parent 76aac0e
commit e9e349b
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Showing 5 changed files with 64 additions and 67 deletions.
diff --git a/include/keys/keyring-type.h b/include/keys/keyring-type.h
@@ -0,0 +1,31 @@
+/* Keyring key type
+ *
+ * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells ([email protected])
+ *
+ * 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 _KEYS_KEYRING_TYPE_H
+#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	*keys[0];
+};
+
+
+#endif /* _KEYS_KEYRING_TYPE_H */
diff --git a/include/linux/key-ui.h b/include/linux/key-ui.h
diff --git a/security/keys/internal.h b/security/keys/internal.h
@@ -13,7 +13,6 @@
 #define _INTERNAL_H
 
 #include <linux/key-type.h>
-#include <linux/key-ui.h>
 
 static inline __attribute__((format(printf, 1, 2)))
 void no_printk(const char *fmt, ...)
@@ -82,6 +81,9 @@ extern struct mutex key_construction_mutex;
 extern wait_queue_head_t request_key_conswq;
 
 
+extern struct key_type *key_type_lookup(const char *type);
+extern void key_type_put(struct key_type *ktype);
+
 extern int __key_link(struct key *keyring, struct key *key);
 
 extern key_ref_t __keyring_search_one(key_ref_t keyring_ref,
@@ -118,6 +120,33 @@ extern struct key *request_key_and_link(struct key_type *type,
 					struct key *dest_keyring,
 					unsigned long flags);
 
+extern key_ref_t lookup_user_key(struct task_struct *context,
+				 key_serial_t id, int create, int partial,
+				 key_perm_t perm);
+
+extern long join_session_keyring(const char *name);
+
+/*
+ * check to see whether permission is granted to use a key in the desired way
+ */
+extern int key_task_permission(const key_ref_t key_ref,
+			       struct task_struct *context,
+			       key_perm_t perm);
+
+static inline int key_permission(const key_ref_t key_ref, key_perm_t perm)
+{
+	return key_task_permission(key_ref, current, perm);
+}
+
+/* required permissions */
+#define	KEY_VIEW	0x01	/* require permission to view attributes */
+#define	KEY_READ	0x02	/* require permission to read content */
+#define	KEY_WRITE	0x04	/* require permission to update / modify */
+#define	KEY_SEARCH	0x08	/* require permission to search (keyring) or find (key) */
+#define	KEY_LINK	0x10	/* require permission to link */
+#define	KEY_SETATTR	0x20	/* require permission to change attributes */
+#define	KEY_ALL		0x3f	/* all the above permissions */
+
 /*
  * request_key authorisation
  */

diff --git a/security/keys/keyring.c b/security/keys/keyring.c
@@ -16,6 +16,7 @@
 #include <linux/security.h>
 #include <linux/seq_file.h>
 #include <linux/err.h>
+#include <keys/keyring-type.h>
 #include <asm/uaccess.h>
 #include "internal.h"
 

diff --git a/security/keys/request_key.c b/security/keys/request_key.c
@@ -19,6 +19,8 @@
 #include <linux/slab.h>
 #include "internal.h"
 
+#define key_negative_timeout	60	/* default timeout on a negative key's existence */
+
 /*
  * wait_on_bit() sleep function for uninterruptible waiting
  */