[PATCH 03/12] hmp: replace "O" parser with keyval

[Paolo Bonzini <pbonzini@redhat.com>]

HMP is using QemuOpts to parse free-form commands device_add,
netdev_add and object_add.  However, none of these need QemuOpts
for validation (these three QemuOptsLists are all of the catch-all
kind), and keyval is already able to parse into QDict.  So use
keyval directly, avoiding the detour from
string to QemuOpts to QDict.

The args_type now stores the implied key.  This arguably makes more
sense than storing the QemuOptsList name; at least, it _is_ a key
that might end up in the arguments QDict.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hmp-commands.hx |  6 +++---
 monitor/hmp.c   | 20 +++++++++-----------
 2 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/hmp-commands.hx b/hmp-commands.hx
index ff2d7aa8f3..35ecd0d9ca 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -668,7 +668,7 @@ ERST
 
     {
         .name       = "device_add",
-        .args_type  = "device:O",
+        .args_type  = "driver:O",
         .params     = "driver[,prop=value][,...]",
         .help       = "add device, like -device on the command line",
         .cmd        = hmp_device_add,
@@ -1314,7 +1314,7 @@ ERST
 
     {
         .name       = "netdev_add",
-        .args_type  = "netdev:O",
+        .args_type  = "type:O",
         .params     = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]",
         .help       = "add host network device",
         .cmd        = hmp_netdev_add,
@@ -1342,7 +1342,7 @@ ERST
 
     {
         .name       = "object_add",
-        .args_type  = "object:O",
+        .args_type  = "qom-type:O",
         .params     = "[qom-type=]type,id=str[,prop=value][,...]",
         .help       = "create QOM object",
         .cmd        = hmp_object_add,
diff --git a/monitor/hmp.c b/monitor/hmp.c
index 0027f1465d..e535baafd0 100644
--- a/monitor/hmp.c
+++ b/monitor/hmp.c
@@ -744,13 +744,9 @@ static QDict *monitor_parse_arguments(Monitor *mon,
             break;
         case 'O':
             {
-                QemuOptsList *opts_list;
-                QemuOpts *opts;
+                Error *errp;
+                bool help;
 
-                opts_list = qemu_find_opts(key);
-                if (!opts_list || opts_list->desc->name) {
-                    goto bad_type;
-                }
                 while (qemu_isspace(*p)) {
                     p++;
                 }
@@ -760,12 +756,14 @@ static QDict *monitor_parse_arguments(Monitor *mon,
                 if (get_str(buf, sizeof(buf), &p) < 0) {
                     goto fail;
                 }
-                opts = qemu_opts_parse_noisily(opts_list, buf, true);
-                if (!opts) {
-                    goto fail;
+                keyval_parse_into(qdict, buf, key, &help, &errp);
+                if (help) {
+                    if (qdict_haskey(qdict, key)) {
+                        qdict_put_bool(qdict, "help", true);
+                    } else {
+                        qdict_put_str(qdict, key, "help");
+                    }
                 }
-                qemu_opts_to_qdict(opts, qdict);
-                qemu_opts_del(opts);
             }
             break;
         case '/':
-- 
2.26.2