Signed-off-by: Benoit Canet <ben...@irqsave.net>
---
Makefile | 3 +++
Makefile.target | 2 +-
block/qcow2-dedup.c | 10 ++++++++--
3 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/Makefile b/Makefile
index 88285a4..c79b2da 100644
--- a/Makefile
+++ b/Makefile
@@ -168,6 +168,9 @@ qemu-img$(EXESUF): qemu-img.o $(tools-obj-y) $(block-obj-y)
$(qapi-obj-y) \
qapi-visit.o qapi-types.o
qemu-nbd$(EXESUF): qemu-nbd.o $(tools-obj-y) $(block-obj-y)
qemu-io$(EXESUF): qemu-io.o cmd.o $(tools-obj-y) $(block-obj-y)
+qemu-img$(EXESUF): LIBS+=-lcrypto
+qemu-nbd$(EXESUF): LIBS+=-lcrypto
+qemu-io$(EXESUF): LIBS+=-lcrypto
qemu-bridge-helper$(EXESUF): qemu-bridge-helper.o
diff --git a/Makefile.target b/Makefile.target
index 3822bc5..f9a988a 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -119,7 +119,7 @@ obj-$(CONFIG_HAVE_GET_MEMORY_MAPPING) += memory_mapping.o
obj-$(CONFIG_HAVE_CORE_DUMP) += dump.o
obj-$(CONFIG_NO_GET_MEMORY_MAPPING) += memory_mapping-stub.o
obj-$(CONFIG_NO_CORE_DUMP) += dump-stub.o
-LIBS+=-lz
+LIBS+=-lz -lcrypto
QEMU_CFLAGS += $(VNC_TLS_CFLAGS)
QEMU_CFLAGS += $(VNC_SASL_CFLAGS)
diff --git a/block/qcow2-dedup.c b/block/qcow2-dedup.c
index 83ad61e..37e8266 100644
--- a/block/qcow2-dedup.c
+++ b/block/qcow2-dedup.c
@@ -25,11 +25,13 @@
* THE SOFTWARE.
*/
+#include <openssl/sha.h>
+#include <openssl/evp.h>
#include "block_int.h"
#include "qemu-common.h"
#include "qcow2.h"
-#define HASH_LENGTH 32
+#define HASH_LENGTH SHA256_DIGEST_LENGTH
static int qcow2_dedup_read_write_hash(BlockDriverState *bs,
uint8_t **hash,
@@ -188,7 +190,11 @@ static QCowHashNode
*qcow2_dedup_build_qcow_hash_node(uint8_t *hash,
static uint8_t *qcow2_compute_cluster_hash(BlockDriverState *bs,
uint8_t *data)
{
- return NULL;
+ BDRVQcowState *s = bs->opaque;
+ uint8_t *hash = g_malloc0(HASH_LENGTH);
+ EVP_Digest(data, s->cluster_size,
+ hash, NULL, EVP_sha256(), NULL);
+ return hash;
}
/* Try to find the offset of a given cluster if it's duplicated
--
1.7.10.4
