crypto/compress.c

   1 /*
   2  * Cryptographic API.
   3  *
   4  * Compression operations.
   5  *
   6  * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the Free
  10  * Software Foundation; either version 2 of the License, or (at your option)
  11  * any later version.
  12  *
  13  */
  14 #include <linux/types.h>
  15 #include <linux/crypto.h>
  16 #include <linux/errno.h>
  17 #include <linux/string.h>
  18 #include "internal.h"
  19
  20 static int crypto_compress(struct crypto_tfm *tfm,
  21                             const u8 *src, unsigned int slen,
  22                             u8 *dst, unsigned int *dlen)
  23 {
  24         return tfm->__crt_alg->cra_compress.coa_compress(tfm, src, slen, dst,
  25                                                          dlen);
  26 }
  27
  28 static int crypto_decompress(struct crypto_tfm *tfm,
  29                              const u8 *src, unsigned int slen,
  30                              u8 *dst, unsigned int *dlen)
  31 {
  32         return tfm->__crt_alg->cra_compress.coa_decompress(tfm, src, slen, dst,
  33                                                            dlen);
  34 }
  35
  36 int crypto_init_compress_ops(struct crypto_tfm *tfm)
  37 {
  38         struct compress_tfm *ops = &tfm->crt_compress;
  39
  40         ops->cot_compress = crypto_compress;
  41         ops->cot_decompress = crypto_decompress;
  42
  43         return 0;
  44 }
  45
  46 void crypto_exit_compress_ops(struct crypto_tfm *tfm)
  47 {
  48 }