64 строки
1.8 KiB
C
64 строки
1.8 KiB
C
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/*
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* Cryptographic API.
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*
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* Compression operations.
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*
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* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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*/
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#include <linux/types.h>
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#include <linux/crypto.h>
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#include <linux/errno.h>
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#include <asm/scatterlist.h>
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#include <linux/string.h>
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#include "internal.h"
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static int crypto_compress(struct crypto_tfm *tfm,
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const u8 *src, unsigned int slen,
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u8 *dst, unsigned int *dlen)
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{
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return tfm->__crt_alg->cra_compress.coa_compress(crypto_tfm_ctx(tfm),
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src, slen, dst,
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dlen);
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}
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static int crypto_decompress(struct crypto_tfm *tfm,
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const u8 *src, unsigned int slen,
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u8 *dst, unsigned int *dlen)
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{
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return tfm->__crt_alg->cra_compress.coa_decompress(crypto_tfm_ctx(tfm),
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src, slen, dst,
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dlen);
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}
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int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags)
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{
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return flags ? -EINVAL : 0;
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}
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int crypto_init_compress_ops(struct crypto_tfm *tfm)
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{
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int ret = 0;
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struct compress_tfm *ops = &tfm->crt_compress;
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ret = tfm->__crt_alg->cra_compress.coa_init(crypto_tfm_ctx(tfm));
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if (ret)
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goto out;
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ops->cot_compress = crypto_compress;
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ops->cot_decompress = crypto_decompress;
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out:
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return ret;
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}
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void crypto_exit_compress_ops(struct crypto_tfm *tfm)
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{
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tfm->__crt_alg->cra_compress.coa_exit(crypto_tfm_ctx(tfm));
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}
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