[PATCH] md: fix ref-counting problems with kobjects in md

[linux-2.6-omap-h63xx.git] / security / keys / user_defined.c

diff --git a/security/keys/user_defined.c b/security/keys/user_defined.c
index e446acba73d325a1d222a0a130c7f23f6a4232a9..cbda3b2780a100696b38e7ce47dec9e3eb46cf33 100644 (file)
--- a/security/keys/user_defined.c
+++ b/security/keys/user_defined.c
@@ -15,18 +15,10 @@
 #include <linux/slab.h>
 #include <linux/seq_file.h>
 #include <linux/err.h>
+#include <keys/user-type.h>
 #include <asm/uaccess.h>
 #include "internal.h"
 
-static int user_instantiate(struct key *key, const void *data, size_t datalen);
-static int user_duplicate(struct key *key, const struct key *source);
-static int user_update(struct key *key, const void *data, size_t datalen);
-static int user_match(const struct key *key, const void *criterion);
-static void user_destroy(struct key *key);
-static void user_describe(const struct key *user, struct seq_file *m);
-static long user_read(const struct key *key,
-                     char __user *buffer, size_t buflen);
-
 /*
  * user defined keys take an arbitrary string as the description and an
  * arbitrary blob of data as the payload
@@ -42,19 +34,13 @@ struct key_type key_type_user = {
        .read           = user_read,
 };
 
-struct user_key_payload {
-       struct rcu_head rcu;            /* RCU destructor */
-       unsigned short  datalen;        /* length of this data */
-       char            data[0];        /* actual data */
-};
-
 EXPORT_SYMBOL_GPL(key_type_user);
 
 /*****************************************************************************/
 /*
  * instantiate a user defined key
  */
-static int user_instantiate(struct key *key, const void *data, size_t datalen)
+int user_instantiate(struct key *key, const void *data, size_t datalen)
 {
        struct user_key_payload *upayload;
        int ret;
@@ -78,18 +64,20 @@ static int user_instantiate(struct key *key, const void *data, size_t datalen)
        rcu_assign_pointer(key->payload.data, upayload);
        ret = 0;
 
- error:
+error:
        return ret;
 
 } /* end user_instantiate() */
 
+EXPORT_SYMBOL_GPL(user_instantiate);
+
 /*****************************************************************************/
 /*
  * duplicate a user defined key
  * - both keys' semaphores are locked against further modification
  * - the new key cannot yet be accessed
  */
-static int user_duplicate(struct key *key, const struct key *source)
+int user_duplicate(struct key *key, const struct key *source)
 {
        struct user_key_payload *upayload, *spayload;
        int ret;
@@ -112,6 +100,8 @@ static int user_duplicate(struct key *key, const struct key *source)
 
 } /* end user_duplicate() */
 
+EXPORT_SYMBOL_GPL(user_duplicate);
+
 /*****************************************************************************/
 /*
  * dispose of the old data from an updated user defined key
@@ -131,7 +121,7 @@ static void user_update_rcu_disposal(struct rcu_head *rcu)
  * update a user defined key
  * - the key's semaphore is write-locked
  */
-static int user_update(struct key *key, const void *data, size_t datalen)
+int user_update(struct key *key, const void *data, size_t datalen)
 {
        struct user_key_payload *upayload, *zap;
        int ret;
@@ -163,26 +153,30 @@ static int user_update(struct key *key, const void *data, size_t datalen)
 
        call_rcu(&zap->rcu, user_update_rcu_disposal);
 
- error:
+error:
        return ret;
 
 } /* end user_update() */
 
+EXPORT_SYMBOL_GPL(user_update);
+
 /*****************************************************************************/
 /*
  * match users on their name
  */
-static int user_match(const struct key *key, const void *description)
+int user_match(const struct key *key, const void *description)
 {
        return strcmp(key->description, description) == 0;
 
 } /* end user_match() */
 
+EXPORT_SYMBOL_GPL(user_match);
+
 /*****************************************************************************/
 /*
  * dispose of the data dangling from the corpse of a user
  */
-static void user_destroy(struct key *key)
+void user_destroy(struct key *key)
 {
        struct user_key_payload *upayload = key->payload.data;
 
@@ -190,11 +184,13 @@ static void user_destroy(struct key *key)
 
 } /* end user_destroy() */
 
+EXPORT_SYMBOL_GPL(user_destroy);
+
 /*****************************************************************************/
 /*
  * describe the user key
  */
-static void user_describe(const struct key *key, struct seq_file *m)
+void user_describe(const struct key *key, struct seq_file *m)
 {
        seq_puts(m, key->description);
 
@@ -202,13 +198,14 @@ static void user_describe(const struct key *key, struct seq_file *m)
 
 } /* end user_describe() */
 
+EXPORT_SYMBOL_GPL(user_describe);
+
 /*****************************************************************************/
 /*
  * read the key data
  * - the key's semaphore is read-locked
  */
-static long user_read(const struct key *key,
-                     char __user *buffer, size_t buflen)
+long user_read(const struct key *key, char __user *buffer, size_t buflen)
 {
        struct user_key_payload *upayload;
        long ret;
@@ -228,3 +225,5 @@ static long user_read(const struct key *key,
        return ret;
 
 } /* end user_read() */
+
+EXPORT_SYMBOL_GPL(user_read);