diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2017-02-17 20:42:32 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2017-02-28 20:47:51 +0100 |
| commit | 12fa4af61fb2a08b156134c3b6717534c637c995 (patch) | |
| tree | bd93d226c7af3454aa64b64bdb771b8fc5d22083 /block/stream.c | |
| parent | c8f6d58edb0defbe1e90d44419ec8ec6d711c341 (diff) | |
block: Add Error parameter to bdrv_set_backing_hd()
Not all callers of bdrv_set_backing_hd() know for sure that attaching
the backing file will be allowed by the permission system. Return the
error from the function rather than aborting.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Acked-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block/stream.c')
| -rw-r--r-- | block/stream.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/block/stream.c b/block/stream.c index b9c2f43c57..0113710845 100644 --- a/block/stream.c +++ b/block/stream.c @@ -68,6 +68,7 @@ static void stream_complete(BlockJob *job, void *opaque) StreamCompleteData *data = opaque; BlockDriverState *bs = blk_bs(job->blk); BlockDriverState *base = s->base; + Error *local_err = NULL; if (!block_job_is_cancelled(&s->common) && data->reached_end && data->ret == 0) { @@ -79,9 +80,15 @@ static void stream_complete(BlockJob *job, void *opaque) } } data->ret = bdrv_change_backing_file(bs, base_id, base_fmt); - bdrv_set_backing_hd(bs, base); + bdrv_set_backing_hd(bs, base, &local_err); + if (local_err) { + error_report_err(local_err); + data->ret = -EPERM; + goto out; + } } +out: /* Reopen the image back in read-only mode if necessary */ if (s->bs_flags != bdrv_get_flags(bs)) { /* Give up write permissions before making it read-only */ |