compress.c

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/*
 * Cryptographic API.
 *
 * Compression operations.
 *
 * Copyright (c) 2002 James Morris <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 */
#include <linux/types.h>
/*#include <linux/crypto.h>*/
#include "rtl_crypto.h"
#include <linux/errno.h>
#include <linux/scatterlist.h>
#include <linux/string.h>
#include "internal.h"

static int crypto_compress(struct crypto_tfm *tfm,
                const u8 *src, unsigned int slen,
                u8 *dst, unsigned int *dlen)
{
    return tfm->__crt_alg->cra_compress.coa_compress(crypto_tfm_ctx(tfm),
                             src, slen, dst,
                             dlen);
}

static int crypto_decompress(struct crypto_tfm *tfm,
                 const u8 *src, unsigned int slen,
                 u8 *dst, unsigned int *dlen)
{
    return tfm->__crt_alg->cra_compress.coa_decompress(crypto_tfm_ctx(tfm),
                               src, slen, dst,
                               dlen);
}

int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags)
{
    return flags ? -EINVAL : 0;
}

int crypto_init_compress_ops(struct crypto_tfm *tfm)
{
    int ret = 0;
    struct compress_tfm *ops = &tfm->crt_compress;

    ret = tfm->__crt_alg->cra_compress.coa_init(crypto_tfm_ctx(tfm));
    if (ret)
        goto out;

    ops->cot_compress = crypto_compress;
    ops->cot_decompress = crypto_decompress;

out:
    return ret;
}

void crypto_exit_compress_ops(struct crypto_tfm *tfm)
{
    tfm->__crt_alg->cra_compress.coa_exit(crypto_tfm_ctx(tfm));
}