linux/include/keys/asymmetric-subtype.h
David Howells 146aa8b145 KEYS: Merge the type-specific data with the payload data
Merge the type-specific data with the payload data into one four-word chunk
as it seems pointless to keep them separate.

Use user_key_payload() for accessing the payloads of overloaded
user-defined keys.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-cifs@vger.kernel.org
cc: ecryptfs@vger.kernel.org
cc: linux-ext4@vger.kernel.org
cc: linux-f2fs-devel@lists.sourceforge.net
cc: linux-nfs@vger.kernel.org
cc: ceph-devel@vger.kernel.org
cc: linux-ima-devel@lists.sourceforge.net
2015-10-21 15:18:36 +01:00

56 lines
1.6 KiB
C

/* Asymmetric public-key cryptography key subtype
*
* See Documentation/security/asymmetric-keys.txt
*
* Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _KEYS_ASYMMETRIC_SUBTYPE_H
#define _KEYS_ASYMMETRIC_SUBTYPE_H
#include <linux/seq_file.h>
#include <keys/asymmetric-type.h>
struct public_key_signature;
/*
* Keys of this type declare a subtype that indicates the handlers and
* capabilities.
*/
struct asymmetric_key_subtype {
struct module *owner;
const char *name;
unsigned short name_len; /* length of name */
/* Describe a key of this subtype for /proc/keys */
void (*describe)(const struct key *key, struct seq_file *m);
/* Destroy a key of this subtype */
void (*destroy)(void *payload);
/* Verify the signature on a key of this subtype (optional) */
int (*verify_signature)(const struct key *key,
const struct public_key_signature *sig);
};
/**
* asymmetric_key_subtype - Get the subtype from an asymmetric key
* @key: The key of interest.
*
* Retrieves and returns the subtype pointer of the asymmetric key from the
* type-specific data attached to the key.
*/
static inline
struct asymmetric_key_subtype *asymmetric_key_subtype(const struct key *key)
{
return key->payload.data[asym_subtype];
}
#endif /* _KEYS_ASYMMETRIC_SUBTYPE_H */