commit cf8074b3825f7229a20c60e679511592bde41340
author Kevin Wolf <kwolf@redhat.com> Fri Apr 05 21:27:53 2013 +0200
committer Stefan Hajnoczi <stefanha@redhat.com> Mon Apr 15 08:26:18 2013 +0200
tree 0d44731c8ec33903dd131295f76c8cd6da9b9c7a
parent e2ec3f976803b360c70d9ae2ba13852fa5d11665

block: Introduce bdrv_writev_vmstate

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

block.c

diff --git a/block.c b/block.c
index 602d8a4..175497e 100644
--- a/block.c
+++ b/block.c
@@ -3184,13 +3184,28 @@
 int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf,
                       int64_t pos, int size)
 {
+    QEMUIOVector qiov;
+    struct iovec iov = {
+        .iov_base   = (void *) buf,
+        .iov_len    = size,
+    };
+
+    qemu_iovec_init_external(&qiov, &iov, 1);
+    return bdrv_writev_vmstate(bs, &qiov, pos);
+}
+
+int bdrv_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos)
+{
     BlockDriver *drv = bs->drv;
-    if (!drv)
+
+    if (!drv) {
         return -ENOMEDIUM;
-    if (drv->bdrv_save_vmstate)
-        return drv->bdrv_save_vmstate(bs, buf, pos, size);
-    if (bs->file)
-        return bdrv_save_vmstate(bs->file, buf, pos, size);
+    } else if (drv->bdrv_save_vmstate) {
+        return drv->bdrv_save_vmstate(bs, qiov, pos);
+    } else if (bs->file) {
+        return bdrv_writev_vmstate(bs->file, qiov, pos);
+    }
+
     return -ENOTSUP;
 }