machined: forward scope properties array from client to systemd

This makes nspawn's --scope= switch work again.

5 files changed, 132 insertions, 10 deletions

diff --git a/src/machine/machine.c b/src/machine/machine.c
index 591a656f1e..602aa18be6 100644
--- a/src/machine/machine.c
+++ b/src/machine/machine.c
@@ -217,7 +217,7 @@ int machine_load(Machine *m) {
         return r;
 }
 
-static int machine_start_scope(Machine *m) {
+static int machine_start_scope(Machine *m, DBusMessageIter *iter) {
         _cleanup_free_ char *description = NULL;
         DBusError error;
         char *job;
@@ -241,7 +241,7 @@ static int machine_start_scope(Machine *m) {
 
                 description = strappend(m->class == MACHINE_VM ? "Virtual Machine " : "Container ", m->name);
 
-                r = manager_start_scope(m->manager, scope, m->leader, SPECIAL_MACHINE_SLICE, description, &error, &job);
+                r = manager_start_scope(m->manager, scope, m->leader, SPECIAL_MACHINE_SLICE, description, iter, &error, &job);
                 if (r < 0) {
                         log_error("Failed to start machine scope: %s", bus_error(&error, r));
                         dbus_error_free(&error);
@@ -262,7 +262,7 @@ static int machine_start_scope(Machine *m) {
         return r;
 }
 
-int machine_start(Machine *m) {
+int machine_start(Machine *m, DBusMessageIter *iter) {
         int r;
 
         assert(m);
@@ -271,7 +271,7 @@ int machine_start(Machine *m) {
                 return 0;
 
         /* Create cgroup */
-        r = machine_start_scope(m);
+        r = machine_start_scope(m, iter);
         if (r < 0)
                 return r;
 
diff --git a/src/machine/machine.h b/src/machine/machine.h
index 7501fa372e..c5d52a968b 100644
--- a/src/machine/machine.h
+++ b/src/machine/machine.h
@@ -82,7 +82,7 @@ Machine* machine_new(Manager *manager, const char *name);
 void machine_free(Machine *m);
 int machine_check_gc(Machine *m, bool drop_not_started);
 void machine_add_to_gc_queue(Machine *m);
-int machine_start(Machine *m);
+int machine_start(Machine *m, DBusMessageIter *iter);
 int machine_stop(Machine *m);
 int machine_save(Machine *m);
 int machine_load(Machine *m);
diff --git a/src/machine/machined-dbus.c b/src/machine/machined-dbus.c
index 4664c73a9c..1e8bc609a3 100644
--- a/src/machine/machined-dbus.c
+++ b/src/machine/machined-dbus.c
@@ -185,6 +185,13 @@ static int bus_manager_create_machine(Manager *manager, DBusMessage *message) {
         if (!(isempty(root_directory) || path_is_absolute(root_directory)))
                 return -EINVAL;
 
+        if (!dbus_message_iter_next(&iter) ||
+            dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
+            dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)
+                return -EINVAL;
+
+        dbus_message_iter_recurse(&iter, &sub);
+
         if (hashmap_get(manager->machines, name))
                 return -EEXIST;
 
@@ -218,7 +225,7 @@ static int bus_manager_create_machine(Manager *manager, DBusMessage *message) {
                 }
         }
 
-        r = machine_start(m);
+        r = machine_start(m, &sub);
         if (r < 0)
                 goto fail;
 
@@ -614,12 +621,118 @@ finish:
         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 }
 
+static int copy_many_fields(DBusMessageIter *dest, DBusMessageIter *src);
+
+static int copy_one_field(DBusMessageIter *dest, DBusMessageIter *src) {
+        int type, r;
+
+        type = dbus_message_iter_get_arg_type(src);
+
+        switch (type) {
+
+        case DBUS_TYPE_STRUCT: {
+                DBusMessageIter dest_sub, src_sub;
+
+                dbus_message_iter_recurse(src, &src_sub);
+
+                if (!dbus_message_iter_open_container(dest, DBUS_TYPE_STRUCT, NULL, &dest_sub))
+                        return log_oom();
+
+                r = copy_many_fields(&dest_sub, &src_sub);
+                if (r < 0)
+                        return r;
+
+                if (!dbus_message_iter_close_container(dest, &dest_sub))
+                        return log_oom();
+
+                return 0;
+        }
+
+        case DBUS_TYPE_ARRAY: {
+                DBusMessageIter dest_sub, src_sub;
+
+                dbus_message_iter_recurse(src, &src_sub);
+
+                if (!dbus_message_iter_open_container(dest, DBUS_TYPE_ARRAY, dbus_message_iter_get_signature(&src_sub), &dest_sub))
+                        return log_oom();
+
+                r = copy_many_fields(&dest_sub, &src_sub);
+                if (r < 0)
+                        return r;
+
+                if (!dbus_message_iter_close_container(dest, &dest_sub))
+                        return log_oom();
+
+                return 0;
+        }
+
+        case DBUS_TYPE_VARIANT: {
+                DBusMessageIter dest_sub, src_sub;
+
+                dbus_message_iter_recurse(src, &src_sub);
+
+                if (!dbus_message_iter_open_container(dest, DBUS_TYPE_VARIANT, dbus_message_iter_get_signature(&src_sub), &dest_sub))
+                        return log_oom();
+
+                r = copy_one_field(&dest_sub, &src_sub);
+                if (r < 0)
+                        return r;
+
+                if (!dbus_message_iter_close_container(dest, &dest_sub))
+                        return log_oom();
+
+                return 0;
+        }
+
+        case DBUS_TYPE_STRING:
+        case DBUS_TYPE_OBJECT_PATH:
+        case DBUS_TYPE_BYTE:
+        case DBUS_TYPE_BOOLEAN:
+        case DBUS_TYPE_UINT16:
+        case DBUS_TYPE_INT16:
+        case DBUS_TYPE_UINT32:
+        case DBUS_TYPE_INT32:
+        case DBUS_TYPE_UINT64:
+        case DBUS_TYPE_INT64:
+        case DBUS_TYPE_DOUBLE:
+        case DBUS_TYPE_SIGNATURE: {
+                const void *p;
+
+                dbus_message_iter_get_basic(src, &p);
+                dbus_message_iter_append_basic(dest, type, &p);
+                return 0;
+        }
+
+        default:
+                return -EINVAL;
+        }
+}
+
+static int copy_many_fields(DBusMessageIter *dest, DBusMessageIter *src) {
+        int r;
+
+        assert(dest);
+        assert(src);
+
+        while (dbus_message_iter_get_arg_type(src) != DBUS_TYPE_INVALID) {
+
+                r = copy_one_field(dest, src);
+                if (r < 0)
+                        return r;
+
+                dbus_message_iter_next(src);
+        }
+
+        return 0;
+}
+
 int manager_start_scope(
                 Manager *manager,
                 const char *scope,
                 pid_t pid,
                 const char *slice,
                 const char *description,
+                DBusMessageIter *more_properties,
                 DBusError *error,
                 char **job) {
 
@@ -630,6 +743,7 @@ int manager_start_scope(
         uint64_t timeout = 500 * USEC_PER_MSEC;
         const char *fail = "fail";
         uint32_t u;
+        int r;
 
         assert(manager);
         assert(scope);
@@ -698,8 +812,16 @@ int manager_start_scope(
             !dbus_message_iter_append_basic(&sub4, DBUS_TYPE_UINT32, &u) ||
             !dbus_message_iter_close_container(&sub3, &sub4) ||
             !dbus_message_iter_close_container(&sub2, &sub3) ||
-            !dbus_message_iter_close_container(&sub, &sub2) ||
-            !dbus_message_iter_close_container(&iter, &sub))
+            !dbus_message_iter_close_container(&sub, &sub2))
+                return log_oom();
+
+        if (more_properties) {
+                r = copy_many_fields(&sub, more_properties);
+                if (r < 0)
+                        return r;
+        }
+
+        if (!dbus_message_iter_close_container(&iter, &sub))
                 return log_oom();
 
         reply = dbus_connection_send_with_reply_and_block(manager->bus, m, -1, error);
diff --git a/src/machine/machined.c b/src/machine/machined.c
index c7c4ecc375..3ce51da90d 100644
--- a/src/machine/machined.c
+++ b/src/machine/machined.c
@@ -330,7 +330,7 @@ int manager_startup(Manager *m) {
 
         /* And start everything */
         HASHMAP_FOREACH(machine, m->machines, i)
-                machine_start(machine);
+                machine_start(machine, NULL);
 
         return 0;
 }
diff --git a/src/machine/machined.h b/src/machine/machined.h
index 32a15fe1ab..780f51678c 100644
--- a/src/machine/machined.h
+++ b/src/machine/machined.h
@@ -67,7 +67,7 @@ extern const DBusObjectPathVTable bus_manager_vtable;
 
 DBusHandlerResult bus_message_filter(DBusConnection *c, DBusMessage *message, void *userdata);
 
-int manager_start_scope(Manager *manager, const char *scope, pid_t pid, const char *slice, const char *description, DBusError *error, char **job);
+int manager_start_scope(Manager *manager, const char *scope, pid_t pid, const char *slice, const char *description, DBusMessageIter *more_properties, DBusError *error, char **job);
 int manager_stop_unit(Manager *manager, const char *unit, DBusError *error, char **job);
 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, DBusError *error);
 int manager_unit_is_active(Manager *manager, const char *unit);