Re: [PATCH 4/4] qemu-storage-daemon: Remove QemuOpts from --object parser

[Eric Blake]

On 9/29/20 12:26 PM, Kevin Wolf wrote:
> The command line parser for --object parses the input twice: Once into
> QemuOpts just for detecting help options, and then again into a QDict
> using the keyval parser for actually creating the object.
> 
> Now that the keyval parser can also detect help options, we can simplify
> this and remove the QemuOpts part.
> 
> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
> ---
>  storage-daemon/qemu-storage-daemon.c | 15 ++++-----------
>  1 file changed, 4 insertions(+), 11 deletions(-)
> 
> diff --git a/storage-daemon/qemu-storage-daemon.c 
> b/storage-daemon/qemu-storage-daemon.c
> index bb9cb740f0..7cbdbf0b23 100644
> --- a/storage-daemon/qemu-storage-daemon.c
> +++ b/storage-daemon/qemu-storage-daemon.c
> @@ -264,21 +264,14 @@ static void process_options(int argc, char *argv[])
>              }
>          case OPTION_OBJECT:
>              {
> -                QemuOpts *opts;
> -                const char *type;
>                  QDict *args;
> +                bool help;
>  
> -                /* FIXME The keyval parser rejects 'help' arguments, so we 
> must
> -                 * unconditionall try QemuOpts first. */

And you're fixing a typo by deleting it ;)

> -                opts = qemu_opts_parse(&qemu_object_opts,
> -                                       optarg, true, &error_fatal);
> -                type = qemu_opt_get(opts, "qom-type");
> -                if (type && user_creatable_print_help(type, opts)) {
> +                args = keyval_parse(optarg, "qom-type", &help, &error_fatal);
> +                if (help) {
> +                    user_creatable_print_help_from_qdict(args);
>                      exit(EXIT_SUCCESS);
>                  }

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org

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