From 0f0d596cb16a43314c8bc4a9afa2f966203fb05f Mon Sep 17 00:00:00 2001
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Date: Fri, 7 Dec 2018 19:13:50 +0300
Subject: [PATCH] crypto/block: introduce qcrypto_block_*crypt_helper functions
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Introduce QCryptoBlock-based functions and use them where possible.
This is needed to implement thread-safe encrypt/decrypt operations.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
crypto/block-luks.c | 14 ++++++--------
crypto/block-qcow.c | 14 ++++++--------
crypto/block.c | 28 ++++++++++++++++++++++++++++
crypto/blockpriv.h | 14 ++++++++++++++
4 files changed, 54 insertions(+), 16 deletions(-)
diff --git a/crypto/block-luks.c b/crypto/block-luks.c
index 353a400595..e486e7ee94 100644
--- a/crypto/block-luks.c
+++ b/crypto/block-luks.c
@@ -1409,10 +1409,9 @@ 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_cipher_decrypt_helper(block->cipher,
- block->niv, block->ivgen,
- QCRYPTO_BLOCK_LUKS_SECTOR_SIZE,
- offset, buf, len, errp);
+ return qcrypto_block_decrypt_helper(block,
+ QCRYPTO_BLOCK_LUKS_SECTOR_SIZE,
+ offset, buf, len, errp);
}
@@ -1425,10 +1424,9 @@ 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_cipher_encrypt_helper(block->cipher,
- block->niv, block->ivgen,
- QCRYPTO_BLOCK_LUKS_SECTOR_SIZE,
- offset, buf, len, errp);
+ return qcrypto_block_encrypt_helper(block,
+ QCRYPTO_BLOCK_LUKS_SECTOR_SIZE,
+ offset, buf, len, errp);
}
diff --git a/crypto/block-qcow.c b/crypto/block-qcow.c
index 3b6722deb0..36bf5f09b7 100644
--- a/crypto/block-qcow.c
+++ b/crypto/block-qcow.c
@@ -152,10 +152,9 @@ 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_cipher_decrypt_helper(block->cipher,
- block->niv, block->ivgen,
- QCRYPTO_BLOCK_QCOW_SECTOR_SIZE,
- offset, buf, len, errp);
+ return qcrypto_block_decrypt_helper(block,
+ QCRYPTO_BLOCK_QCOW_SECTOR_SIZE,
+ offset, buf, len, errp);
}
@@ -168,10 +167,9 @@ 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_cipher_encrypt_helper(block->cipher,
- block->niv, block->ivgen,
- QCRYPTO_BLOCK_QCOW_SECTOR_SIZE,
- offset, buf, len, errp);
+ return qcrypto_block_encrypt_helper(block,
+ QCRYPTO_BLOCK_QCOW_SECTOR_SIZE,
+ offset, buf, len, errp);
}
diff --git a/crypto/block.c b/crypto/block.c
index d43139dbc7..3fe3de2ef8 100644
--- a/crypto/block.c
+++ b/crypto/block.c
@@ -277,3 +277,31 @@ int qcrypto_block_cipher_encrypt_helper(QCryptoCipher *cipher,
offset, buf, len,
qcrypto_cipher_encrypt, errp);
}
+
+
+int qcrypto_block_decrypt_helper(QCryptoBlock *block,
+ int sectorsize,
+ uint64_t offset,
+ uint8_t *buf,
+ size_t len,
+ Error **errp)
+{
+ return do_qcrypto_block_cipher_encdec(block->cipher, block->niv,
+ block->ivgen,
+ sectorsize, offset, buf, len,
+ qcrypto_cipher_decrypt, errp);
+}
+
+
+int qcrypto_block_encrypt_helper(QCryptoBlock *block,
+ int sectorsize,
+ uint64_t offset,
+ uint8_t *buf,
+ size_t len,
+ Error **errp)
+{
+ return do_qcrypto_block_cipher_encdec(block->cipher, block->niv,
+ block->ivgen,
+ sectorsize, offset, buf, len,
+ qcrypto_cipher_encrypt, errp);
+}
diff --git a/crypto/blockpriv.h b/crypto/blockpriv.h
index 54bbe1eb6a..438c08bec2 100644
--- a/crypto/blockpriv.h
+++ b/crypto/blockpriv.h
@@ -96,4 +96,18 @@ int qcrypto_block_cipher_encrypt_helper(QCryptoCipher *cipher,
size_t len,
Error **errp);
+int qcrypto_block_decrypt_helper(QCryptoBlock *block,
+ int sectorsize,
+ uint64_t offset,
+ uint8_t *buf,
+ size_t len,
+ Error **errp);
+
+int qcrypto_block_encrypt_helper(QCryptoBlock *block,
+ int sectorsize,
+ uint64_t offset,
+ uint8_t *buf,
+ size_t len,
+ Error **errp);
+
#endif /* QCRYPTO_BLOCKPRIV_H */
--
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