From 3258b91141090b05edcaab8f1d1dd355ca91b49a Mon Sep 17 00:00:00 2001 From: Max Reitz Date: Wed, 26 Apr 2017 15:46:47 +0200 Subject: [PATCH] qemu-img/convert: Use @opts for one thing only After storing the creation options for the new image into @opts, we fetch some things for our own information, like the backing file name, or whether to use encryption or preallocation. With the -n parameter, there will not be any creation options; this is not too bad because this just means that querying a NULL @opts will always return the default value. However, we also use @opts for the --object options. Therefore, @opts is not necessarily NULL if -n was specified; instead, it may contain those options. In practice, this probably does not cause any problems because there most likely is no object that supports any of the parameters we query here, but this is neither something we should rely on nor does this variable reuse make the code very nice to read. Therefore, just use a separate variable for the --object options. Signed-off-by: Max Reitz Reviewed-by: Eric Blake Signed-off-by: Kevin Wolf --- qemu-img.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/qemu-img.c b/qemu-img.c index b94fc11e67f4..e0503aec9b07 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -2049,13 +2049,15 @@ static int img_convert(int argc, char **argv) case 'W': s.wr_in_order = false; break; - case OPTION_OBJECT: - opts = qemu_opts_parse_noisily(&qemu_object_opts, - optarg, true); - if (!opts) { + case OPTION_OBJECT: { + QemuOpts *object_opts; + object_opts = qemu_opts_parse_noisily(&qemu_object_opts, + optarg, true); + if (!object_opts) { goto fail_getopt; } break; + } case OPTION_IMAGE_OPTS: image_opts = true; break;