@@ -166,6 +166,9 @@ 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$(EXESUF): qemu-bridge-helper.o
@@ -119,7 +119,7 @@ obj-$(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)
@@ -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
/**
* Read some data from the QCOW2 file
@@ -217,7 +219,11 @@ static bool qcow2_dedup_insert_hash_in_rb_tree(BlockDriverState *bs,
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