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vl: list user creatable properties when 'help' is argument

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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 <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marc-André Lureau 2018-09-06 17:05:34 +04:00
parent 033bfc5e0e
commit 1195fa2b08
2 changed files with 40 additions and 6 deletions
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6
qom/object_interfaces.c
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@ -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;
}