diff options
Diffstat (limited to 'util/qemu-option.c')
| -rw-r--r-- | util/qemu-option.c | 71 |
1 files changed, 58 insertions, 13 deletions
diff --git a/util/qemu-option.c b/util/qemu-option.c index 01886efe90..9a5f263294 100644 --- a/util/qemu-option.c +++ b/util/qemu-option.c @@ -208,17 +208,51 @@ out: return result; } +static const char *opt_type_to_string(enum QemuOptType type) +{ + switch (type) { + case QEMU_OPT_STRING: + return "str"; + case QEMU_OPT_BOOL: + return "bool (on/off)"; + case QEMU_OPT_NUMBER: + return "num"; + case QEMU_OPT_SIZE: + return "size"; + } + + g_assert_not_reached(); +} + void qemu_opts_print_help(QemuOptsList *list) { QemuOptDesc *desc; + int i; + GPtrArray *array = g_ptr_array_new(); assert(list); desc = list->desc; while (desc && desc->name) { - printf("%-16s %s\n", desc->name, - desc->help ? desc->help : "No description available"); + GString *str = g_string_new(NULL); + if (list->name) { + g_string_append_printf(str, "%s.", list->name); + } + g_string_append_printf(str, "%s=%s", desc->name, + opt_type_to_string(desc->type)); + if (desc->help) { + g_string_append_printf(str, " - %s", desc->help); + } + g_ptr_array_add(array, g_string_free(str, false)); desc++; } + + g_ptr_array_sort(array, (GCompareFunc)qemu_pstrcmp0); + for (i = 0; i < array->len; i++) { + printf("%s\n", (char *)array->pdata[i]); + } + g_ptr_array_set_free_func(array, g_free); + g_ptr_array_free(array, true); + } /* ------------------------------------------------------------------ */ @@ -486,7 +520,7 @@ int qemu_opt_unset(QemuOpts *opts, const char *name) } static void opt_set(QemuOpts *opts, const char *name, char *value, - bool prepend, Error **errp) + bool prepend, bool *invalidp, Error **errp) { QemuOpt *opt; const QemuOptDesc *desc; @@ -496,6 +530,9 @@ static void opt_set(QemuOpts *opts, const char *name, char *value, if (!desc && !opts_accepts_any(opts)) { g_free(value); error_setg(errp, QERR_INVALID_PARAMETER, name); + if (invalidp) { + *invalidp = true; + } return; } @@ -519,7 +556,7 @@ static void opt_set(QemuOpts *opts, const char *name, char *value, void qemu_opt_set(QemuOpts *opts, const char *name, const char *value, Error **errp) { - opt_set(opts, name, g_strdup(value), false, errp); + opt_set(opts, name, g_strdup(value), false, NULL, errp); } void qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val, @@ -750,7 +787,8 @@ void qemu_opts_print(QemuOpts *opts, const char *separator) } static void opts_do_parse(QemuOpts *opts, const char *params, - const char *firstname, bool prepend, Error **errp) + const char *firstname, bool prepend, + bool *invalidp, Error **errp) { char *option = NULL; char *value = NULL; @@ -785,7 +823,7 @@ static void opts_do_parse(QemuOpts *opts, const char *params, } if (strcmp(option, "id") != 0) { /* store and parse */ - opt_set(opts, option, value, prepend, &local_err); + opt_set(opts, option, value, prepend, invalidp, &local_err); value = NULL; if (local_err) { error_propagate(errp, local_err); @@ -814,11 +852,12 @@ static void opts_do_parse(QemuOpts *opts, const char *params, void qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname, Error **errp) { - opts_do_parse(opts, params, firstname, false, errp); + opts_do_parse(opts, params, firstname, false, NULL, errp); } static QemuOpts *opts_parse(QemuOptsList *list, const char *params, - bool permit_abbrev, bool defaults, Error **errp) + bool permit_abbrev, bool defaults, + bool *invalidp, Error **errp) { const char *firstname; char *id = NULL; @@ -850,7 +889,7 @@ static QemuOpts *opts_parse(QemuOptsList *list, const char *params, return NULL; } - opts_do_parse(opts, params, firstname, defaults, &local_err); + opts_do_parse(opts, params, firstname, defaults, invalidp, &local_err); if (local_err) { error_propagate(errp, local_err); qemu_opts_del(opts); @@ -870,7 +909,7 @@ static QemuOpts *opts_parse(QemuOptsList *list, const char *params, QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, bool permit_abbrev, Error **errp) { - return opts_parse(list, params, permit_abbrev, false, errp); + return opts_parse(list, params, permit_abbrev, false, NULL, errp); } /** @@ -886,10 +925,16 @@ QemuOpts *qemu_opts_parse_noisily(QemuOptsList *list, const char *params, { Error *err = NULL; QemuOpts *opts; + bool invalidp = false; - opts = opts_parse(list, params, permit_abbrev, false, &err); + opts = opts_parse(list, params, permit_abbrev, false, &invalidp, &err); if (err) { - error_report_err(err); + if (invalidp && has_help_option(params)) { + qemu_opts_print_help(list); + error_free(err); + } else { + error_report_err(err); + } } return opts; } @@ -899,7 +944,7 @@ void qemu_opts_set_defaults(QemuOptsList *list, const char *params, { QemuOpts *opts; - opts = opts_parse(list, params, permit_abbrev, true, NULL); + opts = opts_parse(list, params, permit_abbrev, true, NULL, NULL); assert(opts); } |