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authorMarkus Armbruster <armbru@redhat.com>2021-10-19 10:57:11 +0200
committerMarkus Armbruster <armbru@redhat.com>2021-11-10 06:14:51 +0100
commit1bf4d3294bd48b702530b131e3344860495425fd (patch)
tree96d79ed8d3bcf780ce4df4e61552b616b81437c9 /qom
parent0a70bcf18caf7a61d480f8448723c15209d128ef (diff)
monitor: Fix find_device_state() for IDs containing slashes
Recent commit 6952026120 "monitor: Tidy up find_device_state()" assumed the function's argument is "the device's ID or QOM path" (as documented for device_del). It's actually either an absolute QOM path, or a QOM path relative to /machine/peripheral/. Such a relative path is a device ID when it doesn't contain a slash. When it does, the function now always fails. Broke iotest 200, which uses relative path "vda/virtio-backend". It fails because object_resolve_path_component() resolves just one component, not a relative path. The obvious function to resolve relative paths is object_resolve_path(). It picks a parent automatically. Too much magic, we want to specify the parent. Create new object_resolve_path_at() for that, and use it in find_device_state(). Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20211019085711.86377-1-armbru@redhat.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'qom')
-rw-r--r--qom/object.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/qom/object.c b/qom/object.c
index 6be710bc40..4f0677cca9 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 **);