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[PATCH] Keys: Remove key duplication

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Remove the key duplication stuff since there's nothing that uses it, no way
to get at it and it's awkward to deal with for LSM purposes.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
David Howells
2006-01-06 00:11:24 -08:00
committed by Linus Torvalds
parent 32725ad843
commit 8d9067bda9
6 changed files with 3 additions and 177 deletions
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33
security/keys/user_defined.c
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@@ -26,7 +26,6 @@
struct key_type key_type_user = {
.name = "user",
.instantiate = user_instantiate,
.duplicate = user_duplicate,
.update = user_update,
.match = user_match,
.destroy = user_destroy,
@@ -68,40 +67,8 @@ 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
*/
int user_duplicate(struct key *key, const struct key *source)
{
struct user_key_payload *upayload, *spayload;
int ret;
/* just copy the payload */
ret = -ENOMEM;
upayload = kmalloc(sizeof(*upayload) + source->datalen, GFP_KERNEL);
if (upayload) {
spayload = rcu_dereference(source->payload.data);
BUG_ON(source->datalen != spayload->datalen);
upayload->datalen = key->datalen = spayload->datalen;
memcpy(upayload->data, spayload->data, key->datalen);
key->payload.data = upayload;
ret = 0;
}
return ret;
} /* end user_duplicate() */
EXPORT_SYMBOL_GPL(user_duplicate);
/*****************************************************************************/
/*
* dispose of the old data from an updated user defined key