Thomas Gleixner | 2874c5f | 2019-05-27 08:55:01 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
| 3 | * Cryptographic API. |
| 4 | * |
| 5 | * Compression operations. |
| 6 | * |
| 7 | * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | */ |
| 9 | #include <linux/types.h> |
| 10 | #include <linux/crypto.h> |
| 11 | #include <linux/errno.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/string.h> |
| 13 | #include "internal.h" |
| 14 | |
| 15 | static int crypto_compress(struct crypto_tfm *tfm, |
| 16 | const u8 *src, unsigned int slen, |
| 17 | u8 *dst, unsigned int *dlen) |
| 18 | { |
Herbert Xu | 6c2bb98 | 2006-05-16 22:09:29 +1000 | [diff] [blame] | 19 | return tfm->__crt_alg->cra_compress.coa_compress(tfm, src, slen, dst, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | dlen); |
| 21 | } |
| 22 | |
| 23 | static int crypto_decompress(struct crypto_tfm *tfm, |
| 24 | const u8 *src, unsigned int slen, |
| 25 | u8 *dst, unsigned int *dlen) |
| 26 | { |
Herbert Xu | 6c2bb98 | 2006-05-16 22:09:29 +1000 | [diff] [blame] | 27 | return tfm->__crt_alg->cra_compress.coa_decompress(tfm, src, slen, dst, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | dlen); |
| 29 | } |
| 30 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | int crypto_init_compress_ops(struct crypto_tfm *tfm) |
| 32 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | struct compress_tfm *ops = &tfm->crt_compress; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | |
| 35 | ops->cot_compress = crypto_compress; |
| 36 | ops->cot_decompress = crypto_decompress; |
Richard Hartmann | 0375d66 | 2010-02-16 20:31:04 +0800 | [diff] [blame] | 37 | |
Herbert Xu | c7fc059 | 2006-05-24 13:02:26 +1000 | [diff] [blame] | 38 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | } |