diff options
Diffstat (limited to 'block/raw-format.c')
| -rw-r--r-- | block/raw-format.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/block/raw-format.c b/block/raw-format.c index 824fe70686..bfb4d7ddb7 100644 --- a/block/raw-format.c +++ b/block/raw-format.c @@ -441,6 +441,7 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags, BDRVRawState *s = bs->opaque; bool has_size; uint64_t offset, size; + BdrvChildRole file_role; int ret; ret = raw_read_options(options, &offset, &has_size, &size, errp); @@ -448,8 +449,18 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags, return ret; } - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + /* + * Without offset and a size limit, this driver behaves very much + * like a filter. With any such limit, it does not. + */ + if (offset || has_size) { + file_role = BDRV_CHILD_DATA | BDRV_CHILD_PRIMARY; + } else { + file_role = BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY; + } + + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + file_role, false, errp); if (!bs->file) { return -EINVAL; } |