Re: [PATCH v4 06/22] monitor: introduce HumanReadableText and HMP support

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 10/28/21 17:54, Daniel P. Berrangé wrote:
> This provides a foundation on which to convert simple HMP commands to
> use QMP. The QMP implementation will generate formatted text targeted
> for human consumption, returning it in the HumanReadableText data type.
> 
> The HMP command handler will simply print out the formatted string
> within the HumanReadableText data type. Since this will be an entirely
> formulaic action in the case of HMP commands taking no arguemnts, a
> custom command handler is provided.
> 
> Thus instead of registering a 'cmd' callback for the HMP command, a
> 'cmd_info_hrt' callback is provided, which will simply be a pointer
> to the QMP implementation.
> 
> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
> ---
>  include/monitor/hmp.h       |  3 +++
>  include/monitor/monitor.h   |  2 ++
>  include/qapi/type-helpers.h | 14 ++++++++++++++
>  monitor/hmp.c               | 31 ++++++++++++++++++++++++++++---
>  monitor/misc.c              | 18 +++++++++++++++++-
>  monitor/monitor-internal.h  |  7 +++++++
>  qapi/common.json            | 11 +++++++++++
>  qapi/meson.build            |  3 +++
>  qapi/qapi-type-helpers.c    | 23 +++++++++++++++++++++++
>  9 files changed, 108 insertions(+), 4 deletions(-)
>  create mode 100644 include/qapi/type-helpers.h
>  create mode 100644 qapi/qapi-type-helpers.c

> diff --git a/monitor/hmp.c b/monitor/hmp.c
> index d50c3124e1..352a4d9c80 100644
> --- a/monitor/hmp.c
> +++ b/monitor/hmp.c
> @@ -1061,6 +1061,31 @@ fail:
>      return NULL;
>  }
>  
> +static void hmp_info_human_readable_text(Monitor *mon,
> +                                         HumanReadableText *(*handler)(Error **))
> +{
> +    Error *err = NULL;
> +    g_autoptr(HumanReadableText) info = handler(&err);
> +
> +    if (hmp_handle_error(mon, err)) {
> +        return;
> +    }
> +
> +    monitor_printf(mon, "%s", info->human_readable_text);
> +}

Missing:

-- >8 --
diff --git a/monitor/hmp.c b/monitor/hmp.c
--- a/monitor/hmp.c
+++ b/monitor/hmp.c
@@ -35,6 +35,7 @@
 #include "qemu/log.h"
 #include "qemu/option.h"
 #include "qemu/units.h"
+#include "monitor/hmp.h"
 #include "sysemu/block-backend.h"
 #include "sysemu/runstate.h"
 #include "trace.h"
---

to avoid:

monitor/hmp.c: In function ‘hmp_info_human_readable_text’:
monitor/hmp.c:1070:9: error: implicit declaration of function
‘hmp_handle_error’ [-Werror=implicit-function-declaration]
 1070 |     if (hmp_handle_error(mon, err)) {
      |         ^~~~~~~~~~~~~~~~
monitor/hmp.c:1070:9: error: nested extern declaration of
‘hmp_handle_error’ [-Werror=nested-externs]
cc1: all warnings being treated as errors