linux-imx

/*

 * Crypto user configuration API.

 *

 * Copyright (C) 2011 secunet Security Networks AG

 * Copyright (C) 2011 Steffen Klassert <steffen.klassert@secunet.com>

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

 * more details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program; if not, write to the Free Software Foundation, Inc.,

 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

 */

​

#include <linux/module.h>

#include <linux/crypto.h>

#include <linux/cryptouser.h>

#include <linux/sched.h>

#include <net/netlink.h>

#include <linux/security.h>

#include <net/net_namespace.h>

#include <crypto/internal/skcipher.h>

#include <crypto/internal/rng.h>

#include <crypto/akcipher.h>

#include <crypto/kpp.h>

#include <crypto/internal/cryptouser.h>

​

#include "internal.h"

​

#define null_terminated(x)  (strnlen(x, sizeof(x)) < sizeof(x))

​

static DEFINE_MUTEX(crypto_cfg_mutex);

​

/* The crypto netlink socket */

struct sock *crypto_nlsk;

​

struct crypto_dump_info {

    struct sk_buff *in_skb;

    struct sk_buff *out_skb;

    u32 nlmsg_seq;

    u16 nlmsg_flags;

};

​

struct crypto_alg *crypto_alg_match(struct crypto_user_alg *p, int exact)

{

    struct crypto_alg *q, *alg = NULL;

​

    down_read(&crypto_alg_sem);

​

    list_for_each_entry(q, &crypto_alg_list, cra_list) {

        int match = 0;

​

        if ((q->cra_flags ^ p->cru_type) & p->cru_mask)

            continue;

​

        if (strlen(p->cru_driver_name))

            match = !strcmp(q->cra_driver_name,