From: Max Reitz Date: Wed, 9 May 2018 21:00:17 +0000 (+0200) Subject: qemu-img: Amendment support implies create_opts X-Git-Tag: qemu-xen-4.12.0-rc1~177^2~25 X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=1f996683ad908fd41c572221a63d9fc31ce04d07;p=qemu-xen.git qemu-img: Amendment support implies create_opts Instead of checking whether a driver has a non-NULL create_opts we should check whether it supports image amendment in the first place. If it does, it must have create_opts. On the other hand, if it does not have create_opts (so it does not support amendment either), the error message "does not support any options" is a bit useless. Stating clearly that the driver has no amendment support whatsoever is probably better. Signed-off-by: Max Reitz Reviewed-by: John Snow Reviewed-by: Eric Blake Message-id: 20180509210023.20283-2-mreitz@redhat.com Signed-off-by: Max Reitz --- diff --git a/qemu-img.c b/qemu-img.c index 75f1610aa0..0be11b3852 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -3789,13 +3789,16 @@ static int img_amend(int argc, char **argv) goto out; } - if (!bs->drv->create_opts) { - error_report("Format driver '%s' does not support any options to amend", + if (!bs->drv->bdrv_amend_options) { + error_report("Format driver '%s' does not support option amendment", fmt); ret = -1; goto out; } + /* Every driver supporting amendment must have create_opts */ + assert(bs->drv->create_opts); + create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); qemu_opts_do_parse(opts, options, NULL, &err);