diff options
| author | Max Reitz <mreitz@redhat.com> | 2020-05-13 13:05:35 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2020-05-18 19:05:25 +0200 |
| commit | 8b1869daad17f313bf9a68fd3275448df0ecb7fb (patch) | |
| tree | d6686fc9a54daf85e6a893fa093ae8d7864bb570 /block/qcow2.c | |
| parent | ff3541c4e27030fe681d0613ef69bdffb0e29f3a (diff) | |
| download | qemu-8b1869daad17f313bf9a68fd3275448df0ecb7fb.zip qemu-8b1869daad17f313bf9a68fd3275448df0ecb7fb.tar.gz qemu-8b1869daad17f313bf9a68fd3275448df0ecb7fb.tar.bz2 | |
block: Make format drivers use child_of_bds
Commonly, they need to pass the BDRV_CHILD_IMAGE set as the
BdrvChildRole; but there are exceptions for drivers with external data
files (qcow2 and vmdk).
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200513110544.176672-26-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/qcow2.c')
| -rw-r--r-- | block/qcow2.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 86335d9..8d7230d 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1590,8 +1590,9 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options, } /* Open external data file */ - s->data_file = bdrv_open_child(NULL, options, "data-file", bs, &child_file, - 0, true, &local_err); + s->data_file = bdrv_open_child(NULL, options, "data-file", bs, + &child_of_bds, BDRV_CHILD_DATA, + true, &local_err); if (local_err) { error_propagate(errp, local_err); ret = -EINVAL; @@ -1601,8 +1602,8 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options, if (s->incompatible_features & QCOW2_INCOMPAT_DATA_FILE) { if (!s->data_file && s->image_data_file) { s->data_file = bdrv_open_child(s->image_data_file, options, - "data-file", bs, &child_file, 0, - false, errp); + "data-file", bs, &child_of_bds, + BDRV_CHILD_DATA, false, errp); if (!s->data_file) { ret = -EINVAL; goto fail; @@ -1613,6 +1614,12 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options, ret = -EINVAL; goto fail; } + + /* No data here */ + bs->file->role &= ~BDRV_CHILD_DATA; + + /* Must succeed because we have given up permissions if anything */ + bdrv_child_refresh_perms(bs, bs->file, &error_abort); } else { if (s->data_file) { error_setg(errp, "'data-file' can only be set for images with an " @@ -1863,8 +1870,8 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, .ret = -EINPROGRESS }; - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + BDRV_CHILD_IMAGE, false, errp); if (!bs->file) { return -EINVAL; } |