Kevin Wolf <kwolf@xxxxxxxxxx> writes:
> This switches qemu-img from a QemuOpts-based parser for --object to
> user_creatable_process_cmdline() which uses a keyval parser and enforces
> the QAPI schema.
>
> Apart from being a cleanup, this makes non-scalar properties accessible.
>
> Signed-off-by: Kevin Wolf <kwolf@xxxxxxxxxx>
> Acked-by: Peter Krempa <pkrempa@xxxxxxxxxx>
> ---
> qemu-img.c | 251 ++++++++++-------------------------------------------
> 1 file changed, 45 insertions(+), 206 deletions(-)
>
> diff --git a/qemu-img.c b/qemu-img.c
> index e2952fe955..babb5573ab 100644
> --- a/qemu-img.c
> +++ b/qemu-img.c
> @@ -226,23 +226,6 @@ static void QEMU_NORETURN help(void)
> exit(EXIT_SUCCESS);
> }
>
> -static QemuOptsList qemu_object_opts = {
> - .name = "object",
> - .implied_opt_name = "qom-type",
> - .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
> - .desc = {
> - { }
> - },
> -};
> -
> -static bool qemu_img_object_print_help(const char *type, QemuOpts *opts)
> -{
> - if (user_creatable_print_help(type, opts)) {
> - exit(0);
> - }
> - return true;
> -}
> -
> /*
> * Is @optarg safe for accumulate_options()?
> * It is when multiple of them can be joined together separated by ','.
> @@ -566,14 +549,9 @@ static int img_create(int argc, char **argv)
> case 'u':
> flags |= BDRV_O_NO_BACKING;
> break;
> - case OPTION_OBJECT: {
> - QemuOpts *opts;
> - opts = qemu_opts_parse_noisily(&qemu_object_opts,
> - optarg, true);
> - if (!opts) {
> - goto fail;
> - }
> - } break;
> + case OPTION_OBJECT:
> + user_creatable_process_cmdline(optarg);
> + break;
> }
> }
>
> @@ -589,12 +567,6 @@ static int img_create(int argc, char **argv)
> }
> optind++;
>
> - if (qemu_opts_foreach(&qemu_object_opts,
> - user_creatable_add_opts_foreach,
> - qemu_img_object_print_help, &error_fatal)) {
> - goto fail;
> - }
> -
> /* Get image size, if specified */
> if (optind < argc) {
> int64_t sval;
> @@ -804,14 +776,9 @@ static int img_check(int argc, char **argv)
> case 'U':
> force_share = true;
> break;
> - case OPTION_OBJECT: {
> - QemuOpts *opts;
> - opts = qemu_opts_parse_noisily(&qemu_object_opts,
> - optarg, true);
> - if (!opts) {
> - return 1;
> - }
> - } break;
> + case OPTION_OBJECT:
> + user_creatable_process_cmdline(optarg);
> + break;
> case OPTION_IMAGE_OPTS:
> image_opts = true;
> break;
> @@ -831,12 +798,6 @@ static int img_check(int argc, char **argv)
> return 1;
> }
>
> - if (qemu_opts_foreach(&qemu_object_opts,
> - user_creatable_add_opts_foreach,
> - qemu_img_object_print_help, &error_fatal)) {
> - return 1;
> - }
> -
> ret = bdrv_parse_cache_mode(cache, &flags, &writethrough);
> if (ret < 0) {
> error_report("Invalid source cache option: %s", cache);
> @@ -1034,14 +995,9 @@ static int img_commit(int argc, char **argv)
> return 1;
> }
> break;
> - case OPTION_OBJECT: {
> - QemuOpts *opts;
> - opts = qemu_opts_parse_noisily(&qemu_object_opts,
> - optarg, true);
> - if (!opts) {
> - return 1;
> - }
> - } break;
> + case OPTION_OBJECT:
> + user_creatable_process_cmdline(optarg);
> + break;
> case OPTION_IMAGE_OPTS:
> image_opts = true;
> break;
> @@ -1058,12 +1014,6 @@ static int img_commit(int argc, char **argv)
> }
> filename = argv[optind++];
>
> - if (qemu_opts_foreach(&qemu_object_opts,
> - user_creatable_add_opts_foreach,
> - qemu_img_object_print_help, &error_fatal)) {
> - return 1;
> - }
> -
> flags = BDRV_O_RDWR | BDRV_O_UNMAP;
> ret = bdrv_parse_cache_mode(cache, &flags, &writethrough);
> if (ret < 0) {
> @@ -1353,7 +1303,7 @@ static int check_empty_sectors(BlockBackend *blk, int64_t offset,
> /*
> * Compares two images. Exit codes:
> *
> - * 0 - Images are identical
> + * 0 - Images are identical or the requested help was printed
> * 1 - Images differ
> * >1 - Error occurred
> */
> @@ -1423,15 +1373,21 @@ static int img_compare(int argc, char **argv)
> case 'U':
> force_share = true;
> break;
> - case OPTION_OBJECT: {
> - QemuOpts *opts;
> - opts = qemu_opts_parse_noisily(&qemu_object_opts,
> - optarg, true);
> - if (!opts) {
> - ret = 2;
> - goto out4;
> + case OPTION_OBJECT:
> + {
> + Error *local_err = NULL;
> +
> + if (!user_creatable_add_from_str(optarg, &local_err)) {
> + if (local_err) {
> + error_report_err(local_err);
> + exit(2);
> + } else {
> + /* Help was printed */
> + exit(EXIT_SUCCESS);
> + }
> + }
> + break;
> }
> - } break;
> case OPTION_IMAGE_OPTS:
> image_opts = true;
> break;
Why is this one different? The others all call
user_creatable_process_cmdline().
> @@ -1450,13 +1406,6 @@ static int img_compare(int argc, char **argv)
> filename1 = argv[optind++];
> filename2 = argv[optind++];
>
> - if (qemu_opts_foreach(&qemu_object_opts,
> - user_creatable_add_opts_foreach,
> - qemu_img_object_print_help, &error_fatal)) {
> - ret = 2;
> - goto out4;
> - }
> -
> /* Initialize before goto out */
> qemu_progress_init(progress, 2.0);
>
> @@ -1641,7 +1590,6 @@ out2:
> blk_unref(blk1);
> out3:
> qemu_progress_end();
> -out4:
> return ret;
> }
>
[...]
