Fix -snapshot deleting images on disk change

[qemu.git] / blockdev.c

diff --git a/blockdev.c b/blockdev.c
index cecde2b87365a2d74126c1fd828b28d705564f7a..01e402bf3d079672efb40160b4df6314756fcc51 100644 (file)
--- a/blockdev.c
+++ b/blockdev.c
@@ -532,7 +532,7 @@ static int eject_device(Monitor *mon, BlockDriverState *bs, int force)
 int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data)
 {
     BlockDriverState *bs;
-    int force = qdict_get_int(qdict, "force");
+    int force = qdict_get_try_bool(qdict, "force", 0);
     const char *filename = qdict_get_str(qdict, "device");
 
     bs = bdrv_find(filename);
@@ -589,7 +589,8 @@ int do_change_block(Monitor *mon, const char *device,
     if (eject_device(mon, bs, 0) < 0) {
         return -1;
     }
-    bdrv_flags = bdrv_get_type_hint(bs) == BDRV_TYPE_CDROM ? 0 : BDRV_O_RDWR;
+    bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR;
+    bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0;
     if (bdrv_open(bs, filename, bdrv_flags, drv) < 0) {
         qerror_report(QERR_OPEN_FILE_FAILED, filename);
         return -1;