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authorVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>2017-06-28 15:05:25 +0300
committerMax Reitz <mreitz@redhat.com>2017-07-11 17:44:59 +0200
commita3b52535e8a577d9b12887a34183fe9077ea24d8 (patch)
treeb97d4f9dfd789437e388849fca661d54196db0b5 /util/hbitmap.c
parenteb738bb50f216db5edbbf0a59c488cd685ef9e61 (diff)
qmp: add x-debug-block-dirty-bitmap-sha256
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-id: 20170628120530.31251-26-vsementsov@virtuozzo.com Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'util/hbitmap.c')
-rw-r--r--util/hbitmap.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/util/hbitmap.c b/util/hbitmap.c
index 0c1591a594..21535cc90b 100644
--- a/util/hbitmap.c
+++ b/util/hbitmap.c
@@ -13,6 +13,7 @@
#include "qemu/hbitmap.h"
#include "qemu/host-utils.h"
#include "trace.h"
+#include "crypto/hash.h"
/* HBitmaps provides an array of bits. The bits are stored as usual in an
* array of unsigned longs, but HBitmap is also optimized to provide fast
@@ -727,3 +728,13 @@ void hbitmap_free_meta(HBitmap *hb)
hbitmap_free(hb->meta);
hb->meta = NULL;
}
+
+char *hbitmap_sha256(const HBitmap *bitmap, Error **errp)
+{
+ size_t size = bitmap->sizes[HBITMAP_LEVELS - 1] * sizeof(unsigned long);
+ char *data = (char *)bitmap->levels[HBITMAP_LEVELS - 1];
+ char *hash = NULL;
+ qcrypto_hash_digest(QCRYPTO_HASH_ALG_SHA256, data, size, &hash, errp);
+
+ return hash;
+}