machine: also acquire Image object from cache when a dbus method in the main interfac...

Previously, Image objects were only cached when reading properties or
methods in the org.freedesktop.machine1.Image interface are called.

This makes that, when a method in the main interface (org.freedesktop.machine1)
for an image is called, also acquire the Image object from the cache,
and if not cached, create Image object and put into the cache, like we
do for org.freedesktop.machine1.Image.

Otherwise, if some properties of an image are updated by methods in the main
interface, e.g. MarkImageReadOnly(), the changes do not applied to the cached
Image object, and subsequent read of proerties through the interface for the
image, e.g. ReadOnly property, may provide outdated values.

Follow-up for 1ddb263d21099ae42195c2bc382bdf72a7f24f82.

Fixes #32888.

diff --git a/src/machine/machined-dbus.c b/src/machine/machined-dbus.c
index dbb03f3d67d073de03db9c087ae5d6dfdfe9efb1..944b52efd4b8b354dae8d1ab0f22e59d9259303a 100644 (file)
--- a/src/machine/machined-dbus.c
+++ b/src/machine/machined-dbus.c
@@ -550,8 +550,8 @@ static int method_get_machine_uid_shift(sd_bus_message *message, void *userdata,
 }
 
 static int redirect_method_to_image(sd_bus_message *message, Manager *m, sd_bus_error *error, sd_bus_message_handler_t method) {
-        _cleanup_(image_unrefp) Image* i = NULL;
         const char *name;
+        Image *i;
         int r;
 
         assert(message);
@@ -565,13 +565,12 @@ static int redirect_method_to_image(sd_bus_message *message, Manager *m, sd_bus_
         if (!image_name_is_valid(name))
                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", name);
 
-        r = image_find(IMAGE_MACHINE, name, NULL, &i);
+        r = manager_acquire_image(m, name, &i);
         if (r == -ENOENT)
                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
         if (r < 0)
                 return r;
 
-        i->userdata = m;
         return method(message, i, error);
 }