compress.c 1.4 KB

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  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 <asm/scatterlist.h>
  18. #include <linux/string.h>
  19. #include "internal.h"
  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. static int crypto_decompress(struct crypto_tfm *tfm,
  28. const u8 *src, unsigned int slen,
  29. u8 *dst, unsigned int *dlen)
  30. {
  31. return tfm->__crt_alg->cra_compress.coa_decompress(tfm, src, slen, dst,
  32. dlen);
  33. }
  34. int crypto_init_compress_ops(struct crypto_tfm *tfm)
  35. {
  36. struct compress_tfm *ops = &tfm->crt_compress;
  37. ops->cot_compress = crypto_compress;
  38. ops->cot_decompress = crypto_decompress;
  39. return 0;
  40. }
  41. void crypto_exit_compress_ops(struct crypto_tfm *tfm)
  42. {
  43. }