hw/block: Request permissions

This makes all device emulations with a qdev drive property request
permissions on their BlockBackend. The only thing we block at this point
is resizing images for some devices that can't support it.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Acked-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 8e31491..ba47bff 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -1887,6 +1887,7 @@ static void sd_instance_finalize(Object *obj)
 static void sd_realize(DeviceState *dev, Error **errp)
 {
     SDState *sd = SD_CARD(dev);
+    int ret;
 
     if (sd->blk && blk_is_read_only(sd->blk)) {
         error_setg(errp, "Cannot use read-only drive as SD card");
@@ -1894,6 +1895,11 @@ static void sd_realize(DeviceState *dev, Error **errp)
     }
 
     if (sd->blk) {
+        ret = blk_set_perm(sd->blk, BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE,
+                           BLK_PERM_ALL, errp);
+        if (ret < 0) {
+            return;
+        }
         blk_set_dev_ops(sd->blk, &sd_block_ops, sd);
     }
 }