linux-imx

/* xfrm_user.c: User interface to configure xfrm engine.

 *

 * Copyright (C) 2002 David S. Miller (davem@redhat.com)

 *

 * Changes:

 *  Mitsuru KANDA @USAGI

 *  Kazunori MIYAZAWA @USAGI

 *  Kunihiro Ishiguro <kunihiro@ipinfusion.com>

 *      IPv6 support

 *

 */

​

#include <linux/crypto.h>

#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/types.h>

#include <linux/slab.h>

#include <linux/socket.h>

#include <linux/string.h>

#include <linux/net.h>

#include <linux/skbuff.h>

#include <linux/pfkeyv2.h>

#include <linux/ipsec.h>

#include <linux/init.h>

#include <linux/security.h>

#include <net/sock.h>

#include <net/xfrm.h>

#include <net/netlink.h>

#include <net/ah.h>

#include <linux/uaccess.h>

#if IS_ENABLED(CONFIG_IPV6)

#include <linux/in6.h>

#endif

#include <asm/unaligned.h>

​

static int verify_one_alg(struct nlattr **attrs, enum xfrm_attr_type_t type)

{

    struct nlattr *rt = attrs[type];

    struct xfrm_algo *algp;

​

    if (!rt)

        return 0;

​

    algp = nla_data(rt);

    if (nla_len(rt) < (int)xfrm_alg_len(algp))

        return -EINVAL;

​

    switch (type) {

    case XFRMA_ALG_AUTH:

    case XFRMA_ALG_CRYPT:

    case XFRMA_ALG_COMP:

        break;

​

    default:

        return -EINVAL;

    }

​

    algp->alg_name[sizeof(algp->alg_name) - 1] = '\0';

    return 0;

}

​

static int verify_auth_trunc(struct nlattr **attrs)

{

    struct nlattr *rt = attrs[XFRMA_ALG_AUTH_TRUNC];

    struct xfrm_algo_auth *algp;

​

    if (!rt)

        return 0;

​

    algp = nla_data(rt);

    if (nla_len(rt) < (int)xfrm_alg_auth_len(algp))

        return -EINVAL;

​

    algp->alg_name[sizeof(algp->alg_name) - 1] = '\0';

    return 0;

}

​

static int verify_aead(struct nlattr **attrs)

{

    struct nlattr *rt = attrs[XFRMA_ALG_AEAD];

    struct xfrm_algo_aead *algp;

​

    if (!rt)

        return 0;

​

    algp = nla_data(rt);

    if (nla_len(rt) < (int)aead_len(algp))

        return -EINVAL;

​

    algp->alg_name[sizeof(algp->alg_name) - 1] = '\0';

    return 0;

}