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authorDavid Howells <dhowells@redhat.com>2005-10-30 15:02:42 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-30 17:37:22 -0800
commit2aa349f6e37ce030060c994d3aebbff4ab703565 (patch)
tree7a0937469f0376931b82d9c3392727dba13c9d45 /security/keys/user_defined.c
parent1426d7a81dea8e9d85f9d69de85ab04ba37018ab (diff)
downloadlinux-2aa349f6e37ce030060c994d3aebbff4ab703565.tar.bz2
[PATCH] Keys: Export user-defined keyring operations
Export user-defined key operations so that those who wish to define their own key type based on the user-defined key operations may do so (as has been requested). The header file created has been placed into include/keys/user-type.h, thus creating a directory where other key types may also be placed. Any objections to doing this? Signed-Off-By: David Howells <dhowells@redhat.com> Signed-Off-By: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'security/keys/user_defined.c')
-rw-r--r--security/keys/user_defined.c49
1 files changed, 24 insertions, 25 deletions
diff --git a/security/keys/user_defined.c b/security/keys/user_defined.c
index e446acba73d3..cbda3b2780a1 100644
--- 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);