compress.c 1.3 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 <linux/string.h>
  18. #include "internal.h"
  19. static int crypto_compress(struct crypto_tfm *tfm,
  20. const u8 *src, unsigned int slen,
  21. u8 *dst, unsigned int *dlen)
  22. {
  23. return tfm->__crt_alg->cra_compress.coa_compress(tfm, src, slen, dst,
  24. dlen);
  25. }
  26. static int crypto_decompress(struct crypto_tfm *tfm,
  27. const u8 *src, unsigned int slen,
  28. u8 *dst, unsigned int *dlen)
  29. {
  30. return tfm->__crt_alg->cra_compress.coa_decompress(tfm, src, slen, dst,
  31. dlen);
  32. }
  33. int crypto_init_compress_ops(struct crypto_tfm *tfm)
  34. {
  35. struct compress_tfm *ops = &tfm->crt_compress;
  36. ops->cot_compress = crypto_compress;
  37. ops->cot_decompress = crypto_decompress;
  38. return 0;
  39. }
  40. void crypto_exit_compress_ops(struct crypto_tfm *tfm)
  41. {
  42. }