Merge tag 'pull-monitor-2021-11-10' of git://repo.or.cz/qemu/armbru into staging

Monitor patches patches for 2021-11-10

# gpg: Signature made Wed 10 Nov 2021 06:15:38 AM CET
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]

* tag 'pull-monitor-2021-11-10' of git://repo.or.cz/qemu/armbru:
  monitor: Fix find_device_state() for IDs containing slashes

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

3 files changed, 24 insertions, 7 deletions

diff --git a/include/qom/object.h b/include/qom/object.h
index faae0d8..fae096f 100644
--- a/include/qom/object.h
+++ b/include/qom/object.h
@@ -1544,6 +1544,18 @@ Object *object_resolve_path_type(const char *path, const char *typename,
                                  bool *ambiguous);
 
 /**
+ * object_resolve_path_at:
+ * @parent: the object in which to resolve the path
+ * @path: the path to resolve
+ *
+ * This is like object_resolve_path(), except paths not starting with
+ * a slash are relative to @parent.
+ *
+ * Returns: The resolved object or NULL on path lookup failure.
+ */
+Object *object_resolve_path_at(Object *parent, const char *path);
+
+/**
  * object_resolve_path_component:
  * @parent: the object in which to resolve the path
  * @part: the component to resolve.
diff --git a/qom/object.c b/qom/object.c
index 6be710b..4f0677c 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -2144,6 +2144,17 @@ Object *object_resolve_path(const char *path, bool *ambiguous)
     return object_resolve_path_type(path, TYPE_OBJECT, ambiguous);
 }
 
+Object *object_resolve_path_at(Object *parent, const char *path)
+{
+    g_auto(GStrv) parts = g_strsplit(path, "/", 0);
+
+    if (*path == '/') {
+        return object_resolve_abs_path(object_get_root(), parts + 1,
+                                       TYPE_OBJECT);
+    }
+    return object_resolve_abs_path(parent, parts, TYPE_OBJECT);
+}
+
 typedef struct StringProperty
 {
     char *(*get)(Object *, Error **);
diff --git a/softmmu/qdev-monitor.c b/softmmu/qdev-monitor.c
index f8b3a4c..b5aaae4 100644
--- a/softmmu/qdev-monitor.c
+++ b/softmmu/qdev-monitor.c
@@ -871,15 +871,9 @@ void qmp_device_add(QDict *qdict, QObject **ret_data, Error **errp)
 
 static DeviceState *find_device_state(const char *id, Error **errp)
 {
-    Object *obj;
+    Object *obj = object_resolve_path_at(qdev_get_peripheral(), id);
     DeviceState *dev;
 
-    if (id[0] == '/') {
-        obj = object_resolve_path(id, NULL);
-    } else {
-        obj = object_resolve_path_component(qdev_get_peripheral(), id);
-    }
-
     if (!obj) {
         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
                   "Device '%s' not found", id);