// SPDX-License-Identifier: GPL-2.0-or-later
  /*
   * Cryptographic API.
   *
   * Compression operations.
   *
   * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
   */
  #include <linux/types.h>
  #include <linux/crypto.h>
  #include <linux/errno.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(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(tfm, src, slen, dst,
  	                                                   dlen);
  }
  
  int crypto_init_compress_ops(struct crypto_tfm *tfm)
  {
  	struct compress_tfm *ops = &tfm->crt_compress;
  
  	ops->cot_compress = crypto_compress;
  	ops->cot_decompress = crypto_decompress;
  
  	return 0;
  }