[Qemu-devel] [PATCH v2 3/5] crypto/block: rename qcrypto_block_*crypt_helper

Vladimir Sementsov-Ogievskiy posted 5 patches 7 years, 2 months ago
There is a newer version of this series
[Qemu-devel] [PATCH v2 3/5] crypto/block: rename qcrypto_block_*crypt_helper
Posted by Vladimir Sementsov-Ogievskiy 7 years, 2 months ago
Rename qcrypto_block_*crypt_helper to qcrypto_cipher_*crypt_helper, as
it's not about QCryptoBlock. This is needed to introduce
qcrypto_block_*crypt_helper in the next commit, which will have
QCryptoBlock pointer and than will be able to use additional fields of
it, which in turn will be used to implement thread-safe QCryptoBlock
operations.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 crypto/blockpriv.h  | 34 +++++++++++++-------------
 crypto/block-luks.c | 44 +++++++++++++++++-----------------
 crypto/block-qcow.c | 16 ++++++-------
 crypto/block.c      | 58 ++++++++++++++++++++++-----------------------
 4 files changed, 76 insertions(+), 76 deletions(-)

diff --git a/crypto/blockpriv.h b/crypto/blockpriv.h
index 41840abcec..347a7c010a 100644
--- a/crypto/blockpriv.h
+++ b/crypto/blockpriv.h
@@ -78,22 +78,22 @@ struct QCryptoBlockDriver {
 };
 
 
-int qcrypto_block_decrypt_helper(QCryptoCipher *cipher,
-                                 size_t niv,
-                                 QCryptoIVGen *ivgen,
-                                 int sectorsize,
-                                 uint64_t offset,
-                                 uint8_t *buf,
-                                 size_t len,
-                                 Error **errp);
-
-int qcrypto_block_encrypt_helper(QCryptoCipher *cipher,
-                                 size_t niv,
-                                 QCryptoIVGen *ivgen,
-                                 int sectorsize,
-                                 uint64_t offset,
-                                 uint8_t *buf,
-                                 size_t len,
-                                 Error **errp);
+int qcrypto_cipher_decrypt_helper(QCryptoCipher *cipher,
+                                  size_t niv,
+                                  QCryptoIVGen *ivgen,
+                                  int sectorsize,
+                                  uint64_t offset,
+                                  uint8_t *buf,
+                                  size_t len,
+                                  Error **errp);
+
+int qcrypto_cipher_encrypt_helper(QCryptoCipher *cipher,
+                                  size_t niv,
+                                  QCryptoIVGen *ivgen,
+                                  int sectorsize,
+                                  uint64_t offset,
+                                  uint8_t *buf,
+                                  size_t len,
+                                  Error **errp);
 
 #endif /* QCRYPTO_BLOCKPRIV_H */
diff --git a/crypto/block-luks.c b/crypto/block-luks.c
index 51e24d23ca..72dd51051d 100644
--- a/crypto/block-luks.c
+++ b/crypto/block-luks.c
@@ -504,14 +504,14 @@ qcrypto_block_luks_load_key(QCryptoBlock *block,
      * to reset the encryption cipher every time the master
      * key crosses a sector boundary.
      */
-    if (qcrypto_block_decrypt_helper(cipher,
-                                     niv,
-                                     ivgen,
-                                     QCRYPTO_BLOCK_LUKS_SECTOR_SIZE,
-                                     0,
-                                     splitkey,
-                                     splitkeylen,
-                                     errp) < 0) {
+    if (qcrypto_cipher_decrypt_helper(cipher,
+                                      niv,
+                                      ivgen,
+                                      QCRYPTO_BLOCK_LUKS_SECTOR_SIZE,
+                                      0,
+                                      splitkey,
+                                      splitkeylen,
+                                      errp) < 0) {
         goto cleanup;
     }
 
@@ -1219,12 +1219,12 @@ qcrypto_block_luks_create(QCryptoBlock *block,
 
     /* Now we encrypt the split master key with the key generated
      * from the user's password, before storing it */
-    if (qcrypto_block_encrypt_helper(cipher, block->niv, ivgen,
-                                     QCRYPTO_BLOCK_LUKS_SECTOR_SIZE,
-                                     0,
-                                     splitkey,
-                                     splitkeylen,
-                                     errp) < 0) {
+    if (qcrypto_cipher_encrypt_helper(cipher, block->niv, ivgen,
+                                      QCRYPTO_BLOCK_LUKS_SECTOR_SIZE,
+                                      0,
+                                      splitkey,
+                                      splitkeylen,
+                                      errp) < 0) {
         goto error;
     }
 
@@ -1409,10 +1409,10 @@ qcrypto_block_luks_decrypt(QCryptoBlock *block,
 {
     assert(QEMU_IS_ALIGNED(offset, QCRYPTO_BLOCK_LUKS_SECTOR_SIZE));
     assert(QEMU_IS_ALIGNED(len, QCRYPTO_BLOCK_LUKS_SECTOR_SIZE));
-    return qcrypto_block_decrypt_helper(block->cipher,
-                                        block->niv, block->ivgen,
-                                        QCRYPTO_BLOCK_LUKS_SECTOR_SIZE,
-                                        offset, buf, len, errp);
+    return qcrypto_cipher_decrypt_helper(block->cipher,
+                                         block->niv, block->ivgen,
+                                         QCRYPTO_BLOCK_LUKS_SECTOR_SIZE,
+                                         offset, buf, len, errp);
 }
 
 
@@ -1425,10 +1425,10 @@ qcrypto_block_luks_encrypt(QCryptoBlock *block,
 {
     assert(QEMU_IS_ALIGNED(offset, QCRYPTO_BLOCK_LUKS_SECTOR_SIZE));
     assert(QEMU_IS_ALIGNED(len, QCRYPTO_BLOCK_LUKS_SECTOR_SIZE));
-    return qcrypto_block_encrypt_helper(block->cipher,
-                                        block->niv, block->ivgen,
-                                        QCRYPTO_BLOCK_LUKS_SECTOR_SIZE,
-                                        offset, buf, len, errp);
+    return qcrypto_cipher_encrypt_helper(block->cipher,
+                                         block->niv, block->ivgen,
+                                         QCRYPTO_BLOCK_LUKS_SECTOR_SIZE,
+                                         offset, buf, len, errp);
 }
 
 
diff --git a/crypto/block-qcow.c b/crypto/block-qcow.c
index 7606231e79..536ef4ee98 100644
--- a/crypto/block-qcow.c
+++ b/crypto/block-qcow.c
@@ -152,10 +152,10 @@ qcrypto_block_qcow_decrypt(QCryptoBlock *block,
 {
     assert(QEMU_IS_ALIGNED(offset, QCRYPTO_BLOCK_QCOW_SECTOR_SIZE));
     assert(QEMU_IS_ALIGNED(len, QCRYPTO_BLOCK_QCOW_SECTOR_SIZE));
-    return qcrypto_block_decrypt_helper(block->cipher,
-                                        block->niv, block->ivgen,
-                                        QCRYPTO_BLOCK_QCOW_SECTOR_SIZE,
-                                        offset, buf, len, errp);
+    return qcrypto_cipher_decrypt_helper(block->cipher,
+                                         block->niv, block->ivgen,
+                                         QCRYPTO_BLOCK_QCOW_SECTOR_SIZE,
+                                         offset, buf, len, errp);
 }
 
 
@@ -168,10 +168,10 @@ qcrypto_block_qcow_encrypt(QCryptoBlock *block,
 {
     assert(QEMU_IS_ALIGNED(offset, QCRYPTO_BLOCK_QCOW_SECTOR_SIZE));
     assert(QEMU_IS_ALIGNED(len, QCRYPTO_BLOCK_QCOW_SECTOR_SIZE));
-    return qcrypto_block_encrypt_helper(block->cipher,
-                                        block->niv, block->ivgen,
-                                        QCRYPTO_BLOCK_QCOW_SECTOR_SIZE,
-                                        offset, buf, len, errp);
+    return qcrypto_cipher_encrypt_helper(block->cipher,
+                                         block->niv, block->ivgen,
+                                         QCRYPTO_BLOCK_QCOW_SECTOR_SIZE,
+                                         offset, buf, len, errp);
 }
 
 
diff --git a/crypto/block.c b/crypto/block.c
index f4101f0841..540b27e581 100644
--- a/crypto/block.c
+++ b/crypto/block.c
@@ -196,15 +196,15 @@ typedef int (*QCryptoCipherEncryptFunc)(QCryptoCipher *cipher,
                                         size_t len,
                                         Error **errp);
 
-static int do_qcrypto_block_encrypt(QCryptoCipher *cipher,
-                                    size_t niv,
-                                    QCryptoIVGen *ivgen,
-                                    int sectorsize,
-                                    uint64_t offset,
-                                    uint8_t *buf,
-                                    size_t len,
-                                    QCryptoCipherEncryptFunc func,
-                                    Error **errp)
+static int do_qcrypto_cipher_encrypt(QCryptoCipher *cipher,
+                                     size_t niv,
+                                     QCryptoIVGen *ivgen,
+                                     int sectorsize,
+                                     uint64_t offset,
+                                     uint8_t *buf,
+                                     size_t len,
+                                     QCryptoCipherEncryptFunc func,
+                                     Error **errp)
 {
     uint8_t *iv;
     int ret = -1;
@@ -249,29 +249,29 @@ static int do_qcrypto_block_encrypt(QCryptoCipher *cipher,
 }
 
 
-int qcrypto_block_decrypt_helper(QCryptoCipher *cipher,
-                                 size_t niv,
-                                 QCryptoIVGen *ivgen,
-                                 int sectorsize,
-                                 uint64_t offset,
-                                 uint8_t *buf,
-                                 size_t len,
-                                 Error **errp)
+int qcrypto_cipher_decrypt_helper(QCryptoCipher *cipher,
+                                  size_t niv,
+                                  QCryptoIVGen *ivgen,
+                                  int sectorsize,
+                                  uint64_t offset,
+                                  uint8_t *buf,
+                                  size_t len,
+                                  Error **errp)
 {
-    return do_qcrypto_block_encrypt(cipher, niv, ivgen, sectorsize, offset,
-                                    buf, len, qcrypto_cipher_decrypt, errp);
+    return do_qcrypto_cipher_encrypt(cipher, niv, ivgen, sectorsize, offset,
+                                     buf, len, qcrypto_cipher_decrypt, errp);
 }
 
 
-int qcrypto_block_encrypt_helper(QCryptoCipher *cipher,
-                                 size_t niv,
-                                 QCryptoIVGen *ivgen,
-                                 int sectorsize,
-                                 uint64_t offset,
-                                 uint8_t *buf,
-                                 size_t len,
-                                 Error **errp)
+int qcrypto_cipher_encrypt_helper(QCryptoCipher *cipher,
+                                  size_t niv,
+                                  QCryptoIVGen *ivgen,
+                                  int sectorsize,
+                                  uint64_t offset,
+                                  uint8_t *buf,
+                                  size_t len,
+                                  Error **errp)
 {
-    return do_qcrypto_block_encrypt(cipher, niv, ivgen, sectorsize, offset,
-                                    buf, len, qcrypto_cipher_encrypt, errp);
+    return do_qcrypto_cipher_encrypt(cipher, niv, ivgen, sectorsize, offset,
+                                     buf, len, qcrypto_cipher_encrypt, errp);
 }
-- 
2.18.0


Re: [Qemu-devel] [PATCH v2 3/5] crypto/block: rename qcrypto_block_*crypt_helper
Posted by Daniel P. Berrangé 7 years, 2 months ago
On Wed, Dec 05, 2018 at 05:46:58PM +0300, Vladimir Sementsov-Ogievskiy wrote:
> Rename qcrypto_block_*crypt_helper to qcrypto_cipher_*crypt_helper, as
> it's not about QCryptoBlock. This is needed to introduce
> qcrypto_block_*crypt_helper in the next commit, which will have
> QCryptoBlock pointer and than will be able to use additional fields of
> it, which in turn will be used to implement thread-safe QCryptoBlock
> operations.

The naming convention I'm following is that methods defined in a file
should all use the name of the file as their prefix. Hence everything
in crypto/block.* should be named with a qcrypto_block_ prefix

> 
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> ---
>  crypto/blockpriv.h  | 34 +++++++++++++-------------
>  crypto/block-luks.c | 44 +++++++++++++++++-----------------
>  crypto/block-qcow.c | 16 ++++++-------
>  crypto/block.c      | 58 ++++++++++++++++++++++-----------------------
>  4 files changed, 76 insertions(+), 76 deletions(-)
> 
> diff --git a/crypto/blockpriv.h b/crypto/blockpriv.h
> index 41840abcec..347a7c010a 100644
> --- a/crypto/blockpriv.h
> +++ b/crypto/blockpriv.h
> @@ -78,22 +78,22 @@ struct QCryptoBlockDriver {
>  };
>  
>  
> -int qcrypto_block_decrypt_helper(QCryptoCipher *cipher,
> -                                 size_t niv,
> -                                 QCryptoIVGen *ivgen,
> -                                 int sectorsize,
> -                                 uint64_t offset,
> -                                 uint8_t *buf,
> -                                 size_t len,
> -                                 Error **errp);
> -
> -int qcrypto_block_encrypt_helper(QCryptoCipher *cipher,
> -                                 size_t niv,
> -                                 QCryptoIVGen *ivgen,
> -                                 int sectorsize,
> -                                 uint64_t offset,
> -                                 uint8_t *buf,
> -                                 size_t len,
> -                                 Error **errp);
> +int qcrypto_cipher_decrypt_helper(QCryptoCipher *cipher,
> +                                  size_t niv,
> +                                  QCryptoIVGen *ivgen,
> +                                  int sectorsize,
> +                                  uint64_t offset,
> +                                  uint8_t *buf,
> +                                  size_t len,
> +                                  Error **errp);
> +
> +int qcrypto_cipher_encrypt_helper(QCryptoCipher *cipher,
> +                                  size_t niv,
> +                                  QCryptoIVGen *ivgen,
> +                                  int sectorsize,
> +                                  uint64_t offset,
> +                                  uint8_t *buf,
> +                                  size_t len,
> +                                  Error **errp);

Rather than dropping 'block' from the method name, just add
'cipher'. eg

  qcrypto_block_cipher_decrypt_helper
  qcrypto_block_cipher_encrypt_helper


Regards,
Daniel
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