From 1195fa2b08d98ab503155c5cee8831d1ef91aac5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Date: Thu, 6 Sep 2018 17:05:34 +0400 Subject: [PATCH] vl: list user creatable properties when 'help' is argument MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Iterate over the writable class properties, sort and print them out with the description if available. Ex: qemu -object memory-backend-file,help memory-backend-file.align=int memory-backend-file.discard-data=bool memory-backend-file.dump=bool - Set to 'off' to exclude from core dump memory-backend-file.host-nodes=int - Binds memory to the list of NUMA host nodes memory-backend-file.mem-path=string memory-backend-file.merge=bool - Mark memory as mergeable memory-backend-file.pmem=bool memory-backend-file.policy=HostMemPolicy - Set the NUMA policy memory-backend-file.prealloc=bool - Preallocate memory memory-backend-file.share=bool - Mark the memory as private to QEMU or shared memory-backend-file.size=int - Size of the memory region (ex: 500M) Signed-off-by: Marc-André Lureau Reviewed-by: Eric Blake Reviewed-by: Paolo Bonzini --- qom/object_interfaces.c | 6 +++--- vl.c | 40 +++++++++++++++++++++++++++++++++++++--- 2 files changed, 40 insertions(+), 6 deletions(-) diff --git a/qom/object_interfaces.c b/qom/object_interfaces.c index 72b97a8bed..941fd63afd 100644 --- a/qom/object_interfaces.c +++ b/qom/object_interfaces.c @@ -141,14 +141,14 @@ Object *user_creatable_add_opts(QemuOpts *opts, Error **errp) int user_creatable_add_opts_foreach(void *opaque, QemuOpts *opts, Error **errp) { - bool (*type_predicate)(const char *) = opaque; + bool (*type_opt_predicate)(const char *, QemuOpts *) = opaque; Object *obj = NULL; Error *err = NULL; const char *type; type = qemu_opt_get(opts, "qom-type"); - if (type && type_predicate && - !type_predicate(type)) { + if (type && type_opt_predicate && + !type_opt_predicate(type, opts)) { return 0; } diff --git a/vl.c b/vl.c index f254b99bdb..4e25c78bff 100644 --- a/vl.c +++ b/vl.c @@ -2696,8 +2696,10 @@ static int machine_set_property(void *opaque, * cannot be created here, as it depends on the chardev * already existing. */ -static bool object_create_initial(const char *type) +static bool object_create_initial(const char *type, QemuOpts *opts) { + ObjectClass *klass; + if (is_help_option(type)) { GSList *l, *list; @@ -2711,6 +2713,38 @@ static bool object_create_initial(const char *type) exit(0); } + klass = object_class_by_name(type); + if (klass && qemu_opt_has_help_opt(opts)) { + ObjectPropertyIterator iter; + ObjectProperty *prop; + GPtrArray *array = g_ptr_array_new(); + int i; + + object_class_property_iter_init(&iter, klass); + while ((prop = object_property_iter_next(&iter))) { + GString *str; + + if (!prop->set) { + continue; + } + + str = g_string_new(NULL); + g_string_append_printf(str, "%s.%s=%s", type, + prop->name, prop->type); + if (prop->description) { + g_string_append_printf(str, " - %s", prop->description); + } + g_ptr_array_add(array, g_string_free(str, false)); + } + 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); + exit(0); + } + if (g_str_equal(type, "rng-egd") || g_str_has_prefix(type, "pr-manager-")) { return false; @@ -2757,9 +2791,9 @@ static bool object_create_initial(const char *type) * The remainder of object creation happens after the * creation of chardev, fsdev, net clients and device data types. */ -static bool object_create_delayed(const char *type) +static bool object_create_delayed(const char *type, QemuOpts *opts) { - return !object_create_initial(type); + return !object_create_initial(type, opts); }