/* * Cryptographic API. * * Compression operations. * * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> * * 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 <linux/errno.h>#include <asm/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));}