Eric Blake <ebl...@redhat.com> writes:

> Having to manually call out the set of expected arguments in
> qmp-commands.hx, in addition to what is already in *.json,
> is tedious and prone to error.  The only reason we use
> .args_type is for checking if there is any excess arguments
> or incorrectly typed arguments during qmp_check_client_args(),
> but a strict QMP Input visitor also does that checking.

We also use it for completion.

> Simplify things so that .args_type is only needed for the
> few remaining commands that don't have a QAPI description
> (namely, device_add, netdev_add, qmp_capabilities) or which
> use 'gen':false (query-qmp-schema).
>
> There was one case where the generated marshal code has to be
> beefed up: for a command that has no (or empty) 'data' in the
> .json file, we were just ignoring the passed-in QDict; now we
> need to validate that there are no extra arguments.
>
> Generated code changes like:
>
> |@@ -1206,7 +1206,10 @@ void qmp_marshal_cont(QDict *args, QObje
> | {
> |     Error *err = NULL;
> |
> |-    (void)args;
> |+    if (args && qdict_size(args)) {
> |+        error_setg(errp, "Command %s does not take arguments", "cont");
> |+        return;
> |+    }
> |
> |     qmp_cont(&err);
> |     error_propagate(errp, err);
>
> QMP behavior for no-arg commands changes from:
>
> {"execute":"query-version","arguments":{"a":1}}
> {"error": {"class": "GenericError", "desc": "Invalid parameter 'a'"}}
>
> to:
>
> {"execute":"query-version","arguments":{"a":1}}
> {"error": {"class": "GenericError", "desc": "Command 'query-version' does not 
> take arguments"}}
>
> and for commands with at least one (possibly-optional) argument,
> the output changes from:
>
> {"execute":"query-command-line-options","arguments":{"a":1}}
> {"error": {"class": "GenericError", "desc": "Invalid parameter 'a'"}}
>
> to:
>
> {"execute":"query-command-line-options","arguments":{"a":1}}
> {"error": {"class": "GenericError", "desc": "QMP input object member 'a' is 
> unexpected"}}

This error message becomes rather generic.  Tolerable.  Can we restore
the old message without trouble?

> Signed-off-by: Eric Blake <ebl...@redhat.com>
>
> ---
> v15: new patch
> ---
>  scripts/qapi-commands.py |   8 ++-
>  monitor.c                |   4 ++
>  qmp-commands.hx          | 148 
> +----------------------------------------------
>  3 files changed, 12 insertions(+), 148 deletions(-)
>
> diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py
> index 04549fa..beb34c5 100644
> --- a/scripts/qapi-commands.py
> +++ b/scripts/qapi-commands.py
> @@ -136,8 +136,12 @@ def gen_marshal(name, arg_type, ret_type):
       if arg_type and arg_type.members:
           visit the parameter struct
>      else:
>          ret += mcgen('''
>
> -    (void)args;
> -''')
> +    if (args && qdict_size(args)) {
> +        error_setg(errp, "Command '%%s' does not take arguments", 
> "%(name)s");
> +        return;
> +    }
> +''',
> +                     name=name)
>
>      ret += gen_call(name, arg_type, ret_type)
>

Works for me.

Naive question: is the special case "no arguments" really necessary
here?  Could we visit the empty struct instead?

> diff --git a/monitor.c b/monitor.c
> index d1c1930..bc8ff5e 100644
> --- a/monitor.c
> +++ b/monitor.c
> @@ -3783,6 +3783,7 @@ out:
>  /*
>   * Client argument checking rules:
>   *
> + * 0. If args_type is NULL, rely on the generated QAPI to do the check
>   * 1. Client must provide all mandatory arguments
>   * 2. Each argument provided by the client must be expected
>   * 3. Each argument provided by the client must have the type expected
> @@ -3795,6 +3796,9 @@ static void qmp_check_client_args(const mon_cmd_t *cmd, 
> QDict *client_args,
>      int flags;
>      QDict *cmd_args;
>
> +    if (!cmd->args_type) {
> +        return;
> +    }



>      cmd_args = qdict_from_args_type(cmd->args_type);
>
>      flags = 0;

Let's review the other uses of args_type, to understand the impact of
deleting args_type values in qmp-commands.hx:

* monitor_parse_arguments()

  HMP only, not affected.

* monitor_find_completion_by_table()

  MONITOR_USE_READLINE only, see monitor_init().  But then it parses
  input in HMP syntax with parse_cmdline().  Crap code.

We're good.

> diff --git a/qmp-commands.hx b/qmp-commands.hx
> index de896a5..49189ce 100644
> --- a/qmp-commands.hx
> +++ b/qmp-commands.hx
> @@ -62,7 +62,6 @@ EQMP
>
>      {
>          .name       = "quit",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_quit,
>      },
>
> @@ -83,7 +82,6 @@ EQMP
>
>      {
>          .name       = "eject",
> -        .args_type  = "force:-f,device:B",
>          .mhandler.cmd_new = qmp_marshal_eject,
>      },
>
> @@ -109,7 +107,6 @@ EQMP
>
>      {
>          .name       = "change",
> -        .args_type  = "device:B,target:F,arg:s?",
>          .mhandler.cmd_new = qmp_marshal_change,
>      },
>
> @@ -145,7 +142,6 @@ EQMP
>
>      {
>          .name       = "screendump",
> -        .args_type  = "filename:F",
>          .mhandler.cmd_new = qmp_marshal_screendump,
>      },
>
> @@ -168,7 +164,6 @@ EQMP
>
>      {
>          .name       = "stop",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_stop,
>      },
>
> @@ -189,7 +184,6 @@ EQMP
>
>      {
>          .name       = "cont",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_cont,
>      },
>
> @@ -210,7 +204,6 @@ EQMP
>
>      {
>          .name       = "system_wakeup",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_system_wakeup,
>      },
>
> @@ -231,7 +224,6 @@ EQMP
>
>      {
>          .name       = "system_reset",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_system_reset,
>      },
>
> @@ -252,7 +244,6 @@ EQMP
>
>      {
>          .name       = "system_powerdown",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_system_powerdown,
>      },
>
> @@ -309,7 +300,6 @@ EQMP
>
>      {
>          .name       = "device_del",
> -        .args_type  = "id:s",
>          .mhandler.cmd_new = qmp_marshal_device_del,
>      },
>
> @@ -337,7 +327,6 @@ EQMP
>
>      {
>          .name       = "send-key",
> -        .args_type  = "keys:q,hold-time:i?",
>          .mhandler.cmd_new = qmp_marshal_send_key,
>      },
>
> @@ -368,7 +357,6 @@ EQMP
>
>      {
>          .name       = "cpu",
> -        .args_type  = "index:i",
>          .mhandler.cmd_new = qmp_marshal_cpu,
>      },
>
> @@ -393,7 +381,6 @@ EQMP
>
>      {
>          .name       = "cpu-add",
> -        .args_type  = "id:i",
>          .mhandler.cmd_new = qmp_marshal_cpu_add,
>      },
>
> @@ -416,7 +403,6 @@ EQMP
>
>      {
>          .name       = "memsave",
> -        .args_type  = "val:l,size:i,filename:s,cpu:i?",
>          .mhandler.cmd_new = qmp_marshal_memsave,
>      },
>
> @@ -445,7 +431,6 @@ EQMP
>
>      {
>          .name       = "pmemsave",
> -        .args_type  = "val:l,size:i,filename:s",
>          .mhandler.cmd_new = qmp_marshal_pmemsave,
>      },
>
> @@ -473,7 +458,6 @@ EQMP
>
>      {
>          .name       = "inject-nmi",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_inject_nmi,
>      },
>
> @@ -496,7 +480,6 @@ EQMP
>
>      {
>          .name       = "ringbuf-write",
> -        .args_type  = "device:s,data:s,format:s?",
>          .mhandler.cmd_new = qmp_marshal_ringbuf_write,
>      },
>
> @@ -525,7 +508,6 @@ EQMP
>
>      {
>          .name       = "ringbuf-read",
> -        .args_type  = "device:s,size:i,format:s?",
>          .mhandler.cmd_new = qmp_marshal_ringbuf_read,
>      },
>
> @@ -561,7 +543,6 @@ EQMP
>
>      {
>          .name       = "xen-save-devices-state",
> -        .args_type  = "filename:F",
>      .mhandler.cmd_new = qmp_marshal_xen_save_devices_state,
>      },
>
> @@ -588,7 +569,6 @@ EQMP
>
>      {
>          .name       = "xen-set-global-dirty-log",
> -        .args_type  = "enable:b",
>          .mhandler.cmd_new = qmp_marshal_xen_set_global_dirty_log,
>      },
>
> @@ -612,7 +592,6 @@ EQMP
>
>      {
>          .name       = "migrate",
> -        .args_type  = "detach:-d,blk:-b,inc:-i,uri:s",
>          .mhandler.cmd_new = qmp_marshal_migrate,
>      },
>
> @@ -645,7 +624,6 @@ EQMP
>
>      {
>          .name       = "migrate_cancel",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_migrate_cancel,
>      },
>
> @@ -666,7 +644,6 @@ EQMP
>
>      {
>          .name       = "migrate-incoming",
> -        .args_type  = "uri:s",
>          .mhandler.cmd_new = qmp_marshal_migrate_incoming,
>      },
>
> @@ -694,7 +671,6 @@ Notes:
>  EQMP
>      {
>          .name       = "migrate-set-cache-size",
> -        .args_type  = "value:o",
>          .mhandler.cmd_new = qmp_marshal_migrate_set_cache_size,
>      },
>
> @@ -717,7 +693,6 @@ Example:
>  EQMP
>      {
>          .name       = "migrate-start-postcopy",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_migrate_start_postcopy,
>      },
>
> @@ -736,7 +711,6 @@ EQMP
>
>      {
>          .name       = "query-migrate-cache-size",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_migrate_cache_size,
>      },
>
> @@ -758,7 +732,6 @@ EQMP
>
>      {
>          .name       = "migrate_set_speed",
> -        .args_type  = "value:o",
>          .mhandler.cmd_new = qmp_marshal_migrate_set_speed,
>      },
>
> @@ -781,7 +754,6 @@ EQMP
>
>      {
>          .name       = "migrate_set_downtime",
> -        .args_type  = "value:T",
>          .mhandler.cmd_new = qmp_marshal_migrate_set_downtime,
>      },
>
> @@ -804,7 +776,6 @@ EQMP
>
>      {
>          .name       = "client_migrate_info",
> -        .args_type  = 
> "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
>          .params     = "protocol hostname port tls-port cert-subject",
>          .help       = "set migration information for remote display",
>          .mhandler.cmd_new = qmp_marshal_client_migrate_info,
> @@ -838,7 +809,6 @@ EQMP
>
>      {
>          .name       = "dump-guest-memory",
> -        .args_type  = 
> "paging:b,protocol:s,detach:b?,begin:i?,end:i?,format:s?",
>          .params     = "-p protocol [-d] [begin] [length] [format]",
>          .help       = "dump guest memory to file",
>          .mhandler.cmd_new = qmp_marshal_dump_guest_memory,
> @@ -879,8 +849,7 @@ EQMP
>
>      {
>          .name       = "query-dump-guest-memory-capability",
> -        .args_type  = "",
> -    .mhandler.cmd_new = qmp_marshal_query_dump_guest_memory_capability,
> +        .mhandler.cmd_new = qmp_marshal_query_dump_guest_memory_capability,
>      },
>
>  SQMP
> @@ -899,7 +868,6 @@ EQMP
>
>      {
>          .name       = "query-dump",
> -        .args_type  = "",
>          .params     = "",
>          .help       = "query background dump status",
>          .mhandler.cmd_new = qmp_marshal_query_dump,
> @@ -924,7 +892,6 @@ EQMP
>  #if defined TARGET_S390X
>      {
>          .name       = "dump-skeys",
> -        .args_type  = "filename:F",
>          .mhandler.cmd_new = qmp_marshal_dump_skeys,
>      },
>  #endif
> @@ -979,7 +946,6 @@ EQMP
>
>      {
>          .name       = "netdev_del",
> -        .args_type  = "id:s",
>          .mhandler.cmd_new = qmp_marshal_netdev_del,
>      },
>
> @@ -1003,7 +969,6 @@ EQMP
>
>      {
>          .name       = "object-add",
> -        .args_type  = "qom-type:s,id:s,props:q?",
>          .mhandler.cmd_new = qmp_marshal_object_add,
>      },
>
> @@ -1029,7 +994,6 @@ EQMP
>
>      {
>          .name       = "object-del",
> -        .args_type  = "id:s",
>          .mhandler.cmd_new = qmp_marshal_object_del,
>      },
>
> @@ -1054,7 +1018,6 @@ EQMP
>
>      {
>          .name       = "block_resize",
> -        .args_type  = "device:s?,node-name:s?,size:o",
>          .mhandler.cmd_new = qmp_marshal_block_resize,
>      },
>
> @@ -1079,7 +1042,6 @@ EQMP
>
>      {
>          .name       = "block-stream",
> -        .args_type  = 
> "device:B,base:s?,speed:o?,backing-file:s?,on-error:s?",
>          .mhandler.cmd_new = qmp_marshal_block_stream,
>      },
>
> @@ -1122,7 +1084,6 @@ EQMP
>
>      {
>          .name       = "block-commit",
> -        .args_type  = "device:B,base:s?,top:s?,backing-file:s?,speed:o?",
>          .mhandler.cmd_new = qmp_marshal_block_commit,
>      },
>
> @@ -1185,8 +1146,6 @@ EQMP
>
>      {
>          .name       = "drive-backup",
> -        .args_type  = "sync:s,device:B,target:s,speed:i?,mode:s?,format:s?,"
> -                      "bitmap:s?,on-source-error:s?,on-target-error:s?",
>          .mhandler.cmd_new = qmp_marshal_drive_backup,
>      },
>
> @@ -1239,8 +1198,6 @@ EQMP
>
>      {
>          .name       = "blockdev-backup",
> -        .args_type  = "sync:s,device:B,target:B,speed:i?,"
> -                      "on-source-error:s?,on-target-error:s?",
>          .mhandler.cmd_new = qmp_marshal_blockdev_backup,
>      },
>
> @@ -1280,33 +1237,27 @@ EQMP
>
>      {
>          .name       = "block-job-set-speed",
> -        .args_type  = "device:B,speed:o",
>          .mhandler.cmd_new = qmp_marshal_block_job_set_speed,
>      },
>
>      {
>          .name       = "block-job-cancel",
> -        .args_type  = "device:B,force:b?",
>          .mhandler.cmd_new = qmp_marshal_block_job_cancel,
>      },
>      {
>          .name       = "block-job-pause",
> -        .args_type  = "device:B",
>          .mhandler.cmd_new = qmp_marshal_block_job_pause,
>      },
>      {
>          .name       = "block-job-resume",
> -        .args_type  = "device:B",
>          .mhandler.cmd_new = qmp_marshal_block_job_resume,
>      },
>      {
>          .name       = "block-job-complete",
> -        .args_type  = "device:B",
>          .mhandler.cmd_new = qmp_marshal_block_job_complete,
>      },
>      {
>          .name       = "transaction",
> -        .args_type  = "actions:q,properties:q?",
>          .mhandler.cmd_new = qmp_marshal_transaction,
>      },
>
> @@ -1400,7 +1351,6 @@ EQMP
>
>      {
>          .name       = "block-dirty-bitmap-add",
> -        .args_type  = "node:B,name:s,granularity:i?",
>          .mhandler.cmd_new = qmp_marshal_block_dirty_bitmap_add,
>      },
>
> @@ -1428,7 +1378,6 @@ EQMP
>
>      {
>          .name       = "block-dirty-bitmap-remove",
> -        .args_type  = "node:B,name:s",
>          .mhandler.cmd_new = qmp_marshal_block_dirty_bitmap_remove,
>      },
>
> @@ -1456,7 +1405,6 @@ EQMP
>
>      {
>          .name       = "block-dirty-bitmap-clear",
> -        .args_type  = "node:B,name:s",
>          .mhandler.cmd_new = qmp_marshal_block_dirty_bitmap_clear,
>      },
>
> @@ -1485,7 +1433,6 @@ EQMP
>
>      {
>          .name       = "blockdev-snapshot-sync",
> -        .args_type  = 
> "device:s?,node-name:s?,snapshot-file:s,snapshot-node-name:s?,format:s?,mode:s?",
>          .mhandler.cmd_new = qmp_marshal_blockdev_snapshot_sync,
>      },
>
> @@ -1521,7 +1468,6 @@ EQMP
>
>      {
>          .name       = "blockdev-snapshot",
> -        .args_type  = "node:s,overlay:s",
>          .mhandler.cmd_new = qmp_marshal_blockdev_snapshot,
>      },
>
> @@ -1559,7 +1505,6 @@ EQMP
>
>      {
>          .name       = "blockdev-snapshot-internal-sync",
> -        .args_type  = "device:B,name:s",
>          .mhandler.cmd_new = qmp_marshal_blockdev_snapshot_internal_sync,
>      },
>
> @@ -1588,7 +1533,6 @@ EQMP
>
>      {
>          .name       = "blockdev-snapshot-delete-internal-sync",
> -        .args_type  = "device:B,id:s?,name:s?",
>          .mhandler.cmd_new =
>                        qmp_marshal_blockdev_snapshot_delete_internal_sync,
>      },
> @@ -1629,11 +1573,6 @@ EQMP
>
>      {
>          .name       = "drive-mirror",
> -        .args_type  = "sync:s,device:B,target:s,speed:i?,mode:s?,format:s?,"
> -                      "node-name:s?,replaces:s?,"
> -                      "on-source-error:s?,on-target-error:s?,"
> -                      "unmap:b?,"
> -                      "granularity:i?,buf-size:i?",
>          .mhandler.cmd_new = qmp_marshal_drive_mirror,
>      },
>
> @@ -1693,9 +1632,6 @@ EQMP
>
>      {
>          .name       = "blockdev-mirror",
> -        .args_type  = "sync:s,device:B,target:B,replaces:s?,speed:i?,"
> -                      "on-source-error:s?,on-target-error:s?,"
> -                      "granularity:i?,buf-size:i?",
>          .mhandler.cmd_new = qmp_marshal_blockdev_mirror,
>      },
>
> @@ -1741,7 +1677,6 @@ Example:
>  EQMP
>      {
>          .name       = "change-backing-file",
> -        .args_type  = "device:s,image-node-name:s,backing-file:s",
>          .mhandler.cmd_new = qmp_marshal_change_backing_file,
>      },
>
> @@ -1780,7 +1715,6 @@ EQMP
>
>      {
>          .name       = "balloon",
> -        .args_type  = "value:M",
>          .mhandler.cmd_new = qmp_marshal_balloon,
>      },
>
> @@ -1803,7 +1737,6 @@ EQMP
>
>      {
>          .name       = "set_link",
> -        .args_type  = "name:s,up:b",
>          .mhandler.cmd_new = qmp_marshal_set_link,
>      },
>
> @@ -1827,7 +1760,6 @@ EQMP
>
>      {
>          .name       = "getfd",
> -        .args_type  = "fdname:s",
>          .params     = "getfd name",
>          .help       = "receive a file descriptor via SCM rights and assign 
> it a name",
>          .mhandler.cmd_new = qmp_marshal_getfd,
> @@ -1860,7 +1792,6 @@ EQMP
>
>      {
>          .name       = "closefd",
> -        .args_type  = "fdname:s",
>          .params     = "closefd name",
>          .help       = "close a file descriptor previously passed via SCM 
> rights",
>          .mhandler.cmd_new = qmp_marshal_closefd,
> @@ -1885,7 +1816,6 @@ EQMP
>
>       {
>          .name       = "add-fd",
> -        .args_type  = "fdset-id:i?,opaque:s?",
>          .params     = "add-fd fdset-id opaque",
>          .help       = "Add a file descriptor, that was passed via SCM 
> rights, to an fd set",
>          .mhandler.cmd_new = qmp_marshal_add_fd,
> @@ -1924,7 +1854,6 @@ EQMP
>
>       {
>          .name       = "remove-fd",
> -        .args_type  = "fdset-id:i,fd:i?",
>          .params     = "remove-fd fdset-id fd",
>          .help       = "Remove a file descriptor from an fd set",
>          .mhandler.cmd_new = qmp_marshal_remove_fd,
> @@ -1957,7 +1886,6 @@ EQMP
>
>      {
>          .name       = "query-fdsets",
> -        .args_type  = "",
>          .help       = "Return information describing all fd sets",
>          .mhandler.cmd_new = qmp_marshal_query_fdsets,
>      },
> @@ -2007,7 +1935,6 @@ EQMP
>
>      {
>          .name       = "block_passwd",
> -        .args_type  = "device:s?,node-name:s?,password:s",
>          .mhandler.cmd_new = qmp_marshal_block_passwd,
>      },
>
> @@ -2033,7 +1960,6 @@ EQMP
>
>      {
>          .name       = "block_set_io_throttle",
> -        .args_type  = 
> "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l,bps_max:l?,bps_rd_max:l?,bps_wr_max:l?,iops_max:l?,iops_rd_max:l?,iops_wr_max:l?,bps_max_length:l?,bps_rd_max_length:l?,bps_wr_max_length:l?,iops_max_length:l?,iops_rd_max_length:l?,iops_wr_max_length:l?,iops_size:l?,group:s?",
>          .mhandler.cmd_new = qmp_marshal_block_set_io_throttle,
>      },
>
> @@ -2090,7 +2016,6 @@ EQMP
>
>      {
>          .name       = "set_password",
> -        .args_type  = "protocol:s,password:s,connected:s?",
>          .mhandler.cmd_new = qmp_marshal_set_password,
>      },
>
> @@ -2116,7 +2041,6 @@ EQMP
>
>      {
>          .name       = "expire_password",
> -        .args_type  = "protocol:s,time:s",
>          .mhandler.cmd_new = qmp_marshal_expire_password,
>      },
>
> @@ -2141,7 +2065,6 @@ EQMP
>
>      {
>          .name       = "add_client",
> -        .args_type  = "protocol:s,fdname:s,skipauth:b?,tls:b?",
>          .mhandler.cmd_new = qmp_marshal_add_client,
>      },
>
> @@ -2192,7 +2115,6 @@ EQMP
>
>      {
>          .name       = "human-monitor-command",
> -        .args_type  = "command-line:s,cpu-index:i?",
>          .mhandler.cmd_new = qmp_marshal_human_monitor_command,
>      },
>
> @@ -2271,7 +2193,6 @@ EQMP
>
>      {
>          .name       = "query-version",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_version,
>      },
>
> @@ -2308,7 +2229,6 @@ EQMP
>
>      {
>          .name       = "query-commands",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_commands,
>      },
>
> @@ -2345,7 +2265,6 @@ EQMP
>
>      {
>          .name       = "query-events",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_events,
>      },
>
> @@ -2362,7 +2281,7 @@ EQMP
>
>      {
>          .name       = "query-qmp-schema",
> -        .args_type  = "",
> +     .args_type  = "",
>          .mhandler.cmd_new = qmp_query_qmp_schema,
>      },

Spurious hunk.

>
> @@ -2407,7 +2326,6 @@ EQMP
>
>      {
>          .name       = "query-chardev",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_chardev,
>      },
>
> @@ -2448,7 +2366,6 @@ EQMP
>
>      {
>          .name       = "query-chardev-backends",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_chardev_backends,
>      },
>
> @@ -2632,7 +2549,6 @@ EQMP
>
>      {
>          .name       = "query-block",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_block,
>      },
>
> @@ -2829,7 +2745,6 @@ EQMP
>
>      {
>          .name       = "query-blockstats",
> -        .args_type  = "query-nodes:b?",
>          .mhandler.cmd_new = qmp_marshal_query_blockstats,
>      },
>
> @@ -2884,7 +2799,6 @@ EQMP
>
>      {
>          .name       = "query-cpus",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_cpus,
>      },
>
> @@ -2923,7 +2837,6 @@ EQMP
>
>      {
>          .name       = "query-iothreads",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_iothreads,
>      },
>
> @@ -3140,7 +3053,6 @@ EQMP
>
>      {
>          .name       = "query-pci",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_pci,
>      },
>
> @@ -3164,7 +3076,6 @@ EQMP
>
>      {
>          .name       = "query-kvm",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_kvm,
>      },
>
> @@ -3204,7 +3115,6 @@ EQMP
>      
>      {
>          .name       = "query-status",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_status,
>      },
>
> @@ -3248,7 +3158,6 @@ EQMP
>
>      {
>          .name       = "query-mice",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_mice,
>      },
>
> @@ -3311,12 +3220,10 @@ EQMP
>
>      {
>          .name       = "query-vnc",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_vnc,
>      },
>      {
>          .name       = "query-vnc-servers",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_vnc_servers,
>      },
>
> @@ -3393,7 +3300,6 @@ EQMP
>  #if defined(CONFIG_SPICE)
>      {
>          .name       = "query-spice",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_spice,
>      },
>  #endif
> @@ -3417,7 +3323,6 @@ EQMP
>
>      {
>          .name       = "query-name",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_name,
>      },
>
> @@ -3440,7 +3345,6 @@ EQMP
>
>      {
>          .name       = "query-uuid",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_uuid,
>      },
>
> @@ -3489,7 +3393,6 @@ EQMP
>
>      {
>          .name       = "query-command-line-options",
> -        .args_type  = "option:s?",
>          .mhandler.cmd_new = qmp_marshal_query_command_line_options,
>      },
>
> @@ -3667,7 +3570,6 @@ EQMP
>
>      {
>          .name       = "query-migrate",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_migrate,
>      },
>
> @@ -3696,7 +3598,6 @@ EQMP
>
>      {
>          .name       = "migrate-set-capabilities",
> -        .args_type  = "capabilities:q",
>          .params     = "capability:s,state:b",
>          .mhandler.cmd_new = qmp_marshal_migrate_set_capabilities,
>      },
> @@ -3734,7 +3635,6 @@ EQMP
>
>      {
>          .name       = "query-migrate-capabilities",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_migrate_capabilities,
>      },
>
> @@ -3763,8 +3663,6 @@ EQMP
>
>      {
>          .name       = "migrate-set-parameters",
> -        .args_type  =
> -            
> "compress-level:i?,compress-threads:i?,decompress-threads:i?,x-cpu-throttle-initial:i?,x-cpu-throttle-increment:i?",
>          .mhandler.cmd_new = qmp_marshal_migrate_set_parameters,
>      },
>  SQMP
> @@ -3801,7 +3699,6 @@ EQMP
>
>      {
>          .name       = "query-migrate-parameters",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_migrate_parameters,
>      },
>
> @@ -3829,88 +3726,73 @@ EQMP
>
>      {
>          .name       = "query-balloon",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_balloon,
>      },
>
>      {
>          .name       = "query-block-jobs",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_block_jobs,
>      },
>
>      {
>          .name       = "qom-list",
> -        .args_type  = "path:s",
>          .mhandler.cmd_new = qmp_marshal_qom_list,
>      },
>
>      {
>          .name       = "qom-set",
> -     .args_type  = "path:s,property:s,value:q",
>          .mhandler.cmd_new = qmp_marshal_qom_set,
>      },
>
>      {
>          .name       = "qom-get",
> -     .args_type  = "path:s,property:s",
>          .mhandler.cmd_new = qmp_marshal_qom_get,
>      },
>
>      {
>          .name       = "nbd-server-start",
> -        .args_type  = "addr:q,tls-creds:s?",
>          .mhandler.cmd_new = qmp_marshal_nbd_server_start,
>      },
>      {
>          .name       = "nbd-server-add",
> -        .args_type  = "device:B,writable:b?",
>          .mhandler.cmd_new = qmp_marshal_nbd_server_add,
>      },
>      {
>          .name       = "nbd-server-stop",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_nbd_server_stop,
>      },
>
>      {
>          .name       = "change-vnc-password",
> -        .args_type  = "password:s",
>          .mhandler.cmd_new = qmp_marshal_change_vnc_password,
>      },
>      {
>          .name       = "qom-list-types",
> -        .args_type  = "implements:s?,abstract:b?",
>          .mhandler.cmd_new = qmp_marshal_qom_list_types,
>      },
>
>      {
>          .name       = "device-list-properties",
> -        .args_type  = "typename:s",
>          .mhandler.cmd_new = qmp_marshal_device_list_properties,
>      },
>
>      {
>          .name       = "query-machines",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_machines,
>      },
>
>      {
>          .name       = "query-cpu-definitions",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_cpu_definitions,
>      },
>
>      {
>          .name       = "query-target",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_target,
>      },
>
>      {
>          .name       = "query-tpm",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_tpm,
>      },
>
> @@ -3944,7 +3826,6 @@ EQMP
>
>      {
>          .name       = "query-tpm-models",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_tpm_models,
>      },
>
> @@ -3965,7 +3846,6 @@ EQMP
>
>      {
>          .name       = "query-tpm-types",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_tpm_types,
>      },
>
> @@ -3986,7 +3866,6 @@ EQMP
>
>      {
>          .name       = "chardev-add",
> -        .args_type  = "id:s,backend:q",
>          .mhandler.cmd_new = qmp_marshal_chardev_add,
>      },
>
> @@ -4023,7 +3902,6 @@ EQMP
>
>      {
>          .name       = "chardev-remove",
> -        .args_type  = "id:s",
>          .mhandler.cmd_new = qmp_marshal_chardev_remove,
>      },
>
> @@ -4046,7 +3924,6 @@ Example:
>  EQMP
>      {
>          .name       = "query-rx-filter",
> -        .args_type  = "name:s?",
>          .mhandler.cmd_new = qmp_marshal_query_rx_filter,
>      },
>
> @@ -4112,7 +3989,6 @@ EQMP
>
>      {
>          .name       = "blockdev-add",
> -        .args_type  = "options:q",
>          .mhandler.cmd_new = qmp_marshal_blockdev_add,
>      },
>
> @@ -4171,7 +4047,6 @@ EQMP
>
>      {
>          .name       = "x-blockdev-del",
> -        .args_type  = "id:s?,node-name:s?",
>          .mhandler.cmd_new = qmp_marshal_x_blockdev_del,
>      },
>
> @@ -4228,7 +4103,6 @@ EQMP
>
>      {
>          .name       = "blockdev-open-tray",
> -        .args_type  = "device:s,force:b?",
>          .mhandler.cmd_new = qmp_marshal_blockdev_open_tray,
>      },
>
> @@ -4276,7 +4150,6 @@ EQMP
>
>      {
>          .name       = "blockdev-close-tray",
> -        .args_type  = "device:s",
>          .mhandler.cmd_new = qmp_marshal_blockdev_close_tray,
>      },
>
> @@ -4311,7 +4184,6 @@ EQMP
>
>      {
>          .name       = "x-blockdev-remove-medium",
> -        .args_type  = "device:s",
>          .mhandler.cmd_new = qmp_marshal_x_blockdev_remove_medium,
>      },
>
> @@ -4359,7 +4231,6 @@ EQMP
>
>      {
>          .name       = "x-blockdev-insert-medium",
> -        .args_type  = "device:s,node-name:s",
>          .mhandler.cmd_new = qmp_marshal_x_blockdev_insert_medium,
>      },
>
> @@ -4399,7 +4270,6 @@ EQMP
>
>      {
>          .name       = "query-named-block-nodes",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_named_block_nodes,
>      },
>
> @@ -4461,7 +4331,6 @@ EQMP
>
>      {
>          .name       = "blockdev-change-medium",
> -        .args_type  = "device:B,filename:F,format:s?,read-only-mode:s?",
>          .mhandler.cmd_new = qmp_marshal_blockdev_change_medium,
>      },
>
> @@ -4514,7 +4383,6 @@ EQMP
>
>      {
>          .name       = "query-memdev",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_memdev,
>      },
>
> @@ -4552,7 +4420,6 @@ EQMP
>
>      {
>          .name       = "query-memory-devices",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_memory_devices,
>      },
>
> @@ -4579,7 +4446,6 @@ EQMP
>
>      {
>          .name       = "query-acpi-ospm-status",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_acpi_ospm_status,
>      },
>
> @@ -4602,7 +4468,6 @@ EQMP
>  #if defined TARGET_I386
>      {
>          .name       = "rtc-reset-reinjection",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_rtc_reset_reinjection,
>      },
>  #endif
> @@ -4623,7 +4488,6 @@ EQMP
>
>      {
>          .name       = "trace-event-get-state",
> -        .args_type  = "name:s",
>          .mhandler.cmd_new = qmp_marshal_trace_event_get_state,
>      },
>
> @@ -4641,7 +4505,6 @@ EQMP
>
>      {
>          .name       = "trace-event-set-state",
> -        .args_type  = "name:s,enable:b,ignore-unavailable:b?",
>          .mhandler.cmd_new = qmp_marshal_trace_event_set_state,
>      },
>
> @@ -4659,7 +4522,6 @@ EQMP
>
>      {
>          .name       = "input-send-event",
> -        .args_type  = "console:i?,events:q",
>          .mhandler.cmd_new = qmp_marshal_input_send_event,
>      },
>
> @@ -4725,7 +4587,6 @@ EQMP
>
>      {
>          .name       = "block-set-write-threshold",
> -        .args_type  = "node-name:s,write-threshold:l",
>          .mhandler.cmd_new = qmp_marshal_block_set_write_threshold,
>      },
>
> @@ -4753,7 +4614,6 @@ EQMP
>
>      {
>          .name       = "query-rocker",
> -        .args_type  = "name:s",
>          .mhandler.cmd_new = qmp_marshal_query_rocker,
>      },
>
> @@ -4774,7 +4634,6 @@ EQMP
>
>      {
>          .name       = "query-rocker-ports",
> -        .args_type  = "name:s",
>          .mhandler.cmd_new = qmp_marshal_query_rocker_ports,
>      },
>
> @@ -4799,7 +4658,6 @@ EQMP
>
>      {
>          .name       = "query-rocker-of-dpa-flows",
> -        .args_type  = "name:s,tbl-id:i?",
>          .mhandler.cmd_new = qmp_marshal_query_rocker_of_dpa_flows,
>      },
>
> @@ -4828,7 +4686,6 @@ EQMP
>
>      {
>          .name       = "query-rocker-of-dpa-groups",
> -        .args_type  = "name:s,type:i?",
>          .mhandler.cmd_new = qmp_marshal_query_rocker_of_dpa_groups,
>      },
>
> @@ -4859,7 +4716,6 @@ EQMP
>  #if defined TARGET_ARM
>      {
>          .name       = "query-gic-capabilities",
> -        .args_type  = "",
>          .mhandler.cmd_new = qmp_marshal_query_gic_capabilities,
>      },
>  #endif

Entries defining anything beyond .name and .mhandler.cmd_new:

* device_add, qmp_capabilities

  Not QAPIfied, need everything.

* netdev_add, query-qmp-schema

  Need .args_type because of 'gen': false.

* client_migrate_info, dump-guest-memory, query-dump, getfd, closefd,
  add-fd, remove-fd, query-fdsets, migrate-set-capabilities

  Define .params and/or .help.  Does this make any sense?

A comment explaining which members need to be set would be nice.

Have you checked Marc-André's work for overlap?  Cc'ing him.

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