-static int dot_one_property(const char *name, const char *prop, DBusMessageIter *iter) {
-
- static const char * const colors[] = {
- "Requires", "[color=\"black\"]",
- "RequiresOverridable", "[color=\"black\"]",
- "Requisite", "[color=\"darkblue\"]",
- "RequisiteOverridable", "[color=\"darkblue\"]",
- "Wants", "[color=\"grey66\"]",
- "Conflicts", "[color=\"red\"]",
- "ConflictedBy", "[color=\"red\"]",
- "After", "[color=\"green\"]"
- };
-
- const char *c = NULL;
- unsigned i;
-
- assert(name);
- assert(prop);
- assert(iter);
-
- for (i = 0; i < ELEMENTSOF(colors); i += 2)
- if (streq(colors[i], prop)) {
- c = colors[i+1];
- break;
- }
-
- if (!c)
- return 0;
-
- if (arg_dot != DOT_ALL)
- if ((arg_dot == DOT_ORDER) != streq(prop, "After"))
- return 0;
-
- switch (dbus_message_iter_get_arg_type(iter)) {
-
- case DBUS_TYPE_ARRAY:
-
- if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
- DBusMessageIter sub;
-
- dbus_message_iter_recurse(iter, &sub);
-
- while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
- const char *s;
-
- assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
- dbus_message_iter_get_basic(&sub, &s);
- printf("\t\"%s\"->\"%s\" %s;\n", name, s, c);
-
- dbus_message_iter_next(&sub);
- }
-
- return 0;
- }
- }
-
- return 0;
-}
-
-static int dot_one(DBusConnection *bus, const struct unit_info *u) {
- _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
- const char *interface = "org.freedesktop.systemd1.Unit";
- int r;
- DBusMessageIter iter, sub, sub2, sub3;
-
- assert(bus);
- assert(u);
-
- r = bus_method_call_with_reply(
- bus,
- "org.freedesktop.systemd1",
- u->unit_path,
- "org.freedesktop.DBus.Properties",
- "GetAll",
- &reply,
- NULL,
- DBUS_TYPE_STRING, &interface,
- DBUS_TYPE_INVALID);
- if (r < 0)
- return r;
-
- if (!dbus_message_iter_init(reply, &iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
- dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
- log_error("Failed to parse reply.");
- return -EIO;
- }
-
- dbus_message_iter_recurse(&iter, &sub);
-
- while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
- const char *prop;
-
- assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_DICT_ENTRY);
- dbus_message_iter_recurse(&sub, &sub2);
-
- if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0 ||
- dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
- log_error("Failed to parse reply.");
- return -EIO;
- }
-
- dbus_message_iter_recurse(&sub2, &sub3);
- r = dot_one_property(u->id, prop, &sub3);
- if (r < 0)
- return r;
-
- dbus_message_iter_next(&sub);
- }
-
- return 0;
-}
-
-static int dot(DBusConnection *bus, char **args) {
- _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
- DBusMessageIter iter, sub;
- int r;
-
- r = bus_method_call_with_reply(
- bus,
- "org.freedesktop.systemd1",
- "/org/freedesktop/systemd1",
- "org.freedesktop.systemd1.Manager",
- "ListUnits",
- &reply,
- NULL,
- DBUS_TYPE_INVALID);
- if (r < 0)
- return r;
-
- if (!dbus_message_iter_init(reply, &iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
- dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
- log_error("Failed to parse reply.");
- return -EIO;
- }
-
- printf("digraph systemd {\n");
-
- dbus_message_iter_recurse(&iter, &sub);
- while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
- struct unit_info u;
-
- r = bus_parse_unit_info(&sub, &u);
- if (r < 0)
- return -EIO;
-
- r = dot_one(bus, &u);
- if (r < 0)
- return r;
-
- /* printf("\t\"%s\";\n", u.id); */
- dbus_message_iter_next(&sub);
- }
-
- printf("}\n");
-
- log_info(" Color legend: black = Requires\n"
- " dark blue = Requisite\n"
- " dark grey = Wants\n"
- " red = Conflicts\n"
- " green = After\n");
-
- if (on_tty())
- log_notice("-- You probably want to process this output with graphviz' dot tool.\n"
- "-- Try a shell pipeline like 'systemctl dot | dot -Tsvg > systemd.svg'!\n");
-
- return 0;
-}
-
~ianmdlvl / elogind.git / blobdiff