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 "rtl_crypto.h"
17 #include <linux/errno.h>
18 #include <linux/scatterlist.h>
19 #include <linux/string.h>
20 #include "internal.h"
21
crypto_compress(struct crypto_tfm * tfm,const u8 * src,unsigned int slen,u8 * dst,unsigned int * dlen)22 static int crypto_compress(struct crypto_tfm *tfm,
23 const u8 *src, unsigned int slen,
24 u8 *dst, unsigned int *dlen)
25 {
26 return tfm->__crt_alg->cra_compress.coa_compress(crypto_tfm_ctx(tfm),
27 src, slen, dst,
28 dlen);
29 }
30
crypto_decompress(struct crypto_tfm * tfm,const u8 * src,unsigned int slen,u8 * dst,unsigned int * dlen)31 static int crypto_decompress(struct crypto_tfm *tfm,
32 const u8 *src, unsigned int slen,
33 u8 *dst, unsigned int *dlen)
34 {
35 return tfm->__crt_alg->cra_compress.coa_decompress(crypto_tfm_ctx(tfm),
36 src, slen, dst,
37 dlen);
38 }
39
crypto_init_compress_flags(struct crypto_tfm * tfm,u32 flags)40 int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags)
41 {
42 return flags ? -EINVAL : 0;
43 }
44
crypto_init_compress_ops(struct crypto_tfm * tfm)45 int crypto_init_compress_ops(struct crypto_tfm *tfm)
46 {
47 int ret = 0;
48 struct compress_tfm *ops = &tfm->crt_compress;
49
50 ret = tfm->__crt_alg->cra_compress.coa_init(crypto_tfm_ctx(tfm));
51 if (ret)
52 goto out;
53
54 ops->cot_compress = crypto_compress;
55 ops->cot_decompress = crypto_decompress;
56
57 out:
58 return ret;
59 }
60
crypto_exit_compress_ops(struct crypto_tfm * tfm)61 void crypto_exit_compress_ops(struct crypto_tfm *tfm)
62 {
63 tfm->__crt_alg->cra_compress.coa_exit(crypto_tfm_ctx(tfm));
64 }
65