Linux Kernel  3.7.1
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crypto_compat.h
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1 /*
2  * Header file to maintain compatibility among different kernel versions.
3  *
4  * Copyright (c) 2004-2006 <[email protected]>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation. See README and COPYING for
9  * more details.
10  */
11 
12 #include <linux/crypto.h>
13 
14 static inline int crypto_cipher_encrypt(struct crypto_tfm *tfm,
15  struct scatterlist *dst,
16  struct scatterlist *src,
17  unsigned int nbytes)
18 {
19  BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
20  return tfm->crt_cipher.cit_encrypt(tfm, dst, src, nbytes);
21 }
22 
23 
24 static inline int crypto_cipher_decrypt(struct crypto_tfm *tfm,
25  struct scatterlist *dst,
26  struct scatterlist *src,
27  unsigned int nbytes)
28 {
29  BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
30  return tfm->crt_cipher.cit_decrypt(tfm, dst, src, nbytes);
31 }
32 
33  struct crypto_tfm *crypto_alloc_tfm(const char *name, u32 flags)
34 {
35  struct crypto_tfm *tfm = NULL;
36  int err;
37  printk("call crypto_alloc_tfm!!!\n");
38  do {
39  struct crypto_alg *alg;
40 
42  err = PTR_ERR(alg);
43  if (IS_ERR(alg))
44  continue;
45 
46  tfm = __crypto_alloc_tfm(alg, flags);
47  err = 0;
48  if (IS_ERR(tfm)) {
49  crypto_mod_put(alg);
50  err = PTR_ERR(tfm);
51  tfm = NULL;
52  }
53  } while (err == -EAGAIN && !signal_pending(current));
54 
55  return tfm;
56 }
57 //EXPORT_SYMBOL_GPL(crypto_alloc_tfm);
58 //EXPORT_SYMBOL_GPL(crypto_free_tfm);
59 
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