From c76f542bada1e7036f5961cf71b3697d633e00ad Mon Sep 17 00:00:00 2001
Message-Id: <c76f542bada1e7036f5961cf71b3697d633e00ad.1379425497.git.minovotn@redhat.com>
In-Reply-To: <f5f5558c6067d2cdb77e46707b0bda1f4f885402.1379425497.git.minovotn@redhat.com>
References: <f5f5558c6067d2cdb77e46707b0bda1f4f885402.1379425497.git.minovotn@redhat.com>
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Fri, 6 Sep 2013 18:12:44 +0200
Subject: [PATCH 24/25] block: add default get_block_status implementation for
 protocols

Protocols return raw data, so you can assume the offsets to pass
through unchanged.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit 918e92d71b38306a6bf4fedfd1109367f1425587)
Signed-off-by: Michal Novotny <minovotn@redhat.com>
---
 block.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/block.c b/block.c
index 2306994..9ca164d 100644
--- a/block.c
+++ b/block.c
@@ -2769,7 +2769,11 @@ static int64_t coroutine_fn bdrv_co_get_block_status(BlockDriverState *bs,
 
     if (!bs->drv->bdrv_co_get_block_status) {
         *pnum = nb_sectors;
-        return BDRV_BLOCK_DATA;
+        ret = BDRV_BLOCK_DATA;
+        if (bs->drv->protocol_name) {
+            ret |= BDRV_BLOCK_OFFSET_VALID | (sector_num * BDRV_SECTOR_SIZE);
+        }
+        return ret;
     }
 
     ret = bs->drv->bdrv_co_get_block_status(bs, sector_num, nb_sectors, pnum);
-- 
1.7.11.7