static bool arg_dry = false;
static bool arg_quiet = false;
static char **arg_wall = NULL;
-enum action {
+static enum action {
ACTION_INVALID,
ACTION_SYSTEMCTL,
ACTION_HALT,
ACTION_RUNLEVEL,
_ACTION_MAX
} arg_action = ACTION_SYSTEMCTL;
+static enum dot {
+ DOT_ALL,
+ DOT_ORDER,
+ DOT_REQUIRE
+} arg_dot = DOT_ALL;
static bool private_bus = false;
printf("%-45s %-6s %-12s %-12s %-15s %s\n", "UNIT", "LOAD", "ACTIVE", "SUB", "JOB", "DESCRIPTION");
while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
- const char *id, *description, *load_state, *active_state, *sub_state, *unit_state, *job_type, *job_path, *dot;
+ const char *id, *description, *load_state, *active_state, *sub_state, *unit_path, *job_type, *job_path, *dot;
uint32_t job_id;
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
- bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_state, true) < 0 ||
+ bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &job_id, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &job_type, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, false) < 0) {
if (arg_all)
printf("\n%u units listed.\n", k);
else
- printf("\n%u live units listed. Pass --all to see dead units, too.\n", k);
+ printf("\n%u units listed. Pass --all to see inactive units, too.\n", k);
+
+ r = 0;
+
+finish:
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ dbus_error_free(&error);
+
+ return r;
+}
+
+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=\"darkgrey\"]",
+ "Conflicts", "[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 char *name, const char *path) {
+ DBusMessage *m = NULL, *reply = NULL;
+ const char *interface = "org.freedesktop.systemd1.Unit";
+ int r;
+ DBusError error;
+ DBusMessageIter iter, sub, sub2, sub3;
+
+ assert(bus);
+ assert(path);
+
+ dbus_error_init(&error);
+
+ if (!(m = dbus_message_new_method_call(
+ "org.freedesktop.systemd1",
+ path,
+ "org.freedesktop.DBus.Properties",
+ "GetAll"))) {
+ log_error("Could not allocate message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (!dbus_message_append_args(m,
+ DBUS_TYPE_STRING, &interface,
+ DBUS_TYPE_INVALID)) {
+ log_error("Could not append arguments to message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+ log_error("Failed to issue method call: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ 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.");
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_recurse(&iter, &sub);
+
+ while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
+ const char *prop;
+
+ if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_recurse(&sub, &sub2);
+
+ if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_recurse(&sub2, &sub3);
+
+ if (dot_one_property(name, prop, &sub3)) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_next(&sub);
+ }
+
+finish:
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ dbus_error_free(&error);
+
+ return r;
+}
+
+static int dot(DBusConnection *bus, char **args, unsigned n) {
+ DBusMessage *m = NULL, *reply = NULL;
+ DBusError error;
+ int r;
+ DBusMessageIter iter, sub, sub2;
+
+ dbus_error_init(&error);
+
+ assert(bus);
+
+ if (!(m = dbus_message_new_method_call(
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "ListUnits"))) {
+ log_error("Could not allocate message.");
+ return -ENOMEM;
+ }
+
+ if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+ log_error("Failed to issue method call: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ 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.");
+ r = -EIO;
+ goto finish;
+ }
+
+ printf("digraph systemd {\n");
+
+ dbus_message_iter_recurse(&iter, &sub);
+ while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
+ const char *id, *description, *load_state, *active_state, *sub_state, *unit_path;
+
+ if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_recurse(&sub, &sub2);
+
+ if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
+ bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
+ bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
+ bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
+ bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
+ bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ if ((r = dot_one(bus, id, unit_path)) < 0)
+ goto finish;
+
+ /* printf("\t\"%s\";\n", 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 (isatty(fileno(stdout)))
+ 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");
r = 0;
" pending\n"
" --system Connect to system bus\n"
" --session Connect to session bus\n"
+ " --order When generating graph for dot, show only order\n"
+ " --require When generating graph for dot, show only requirement\n"
" -q --quiet Suppress output\n"
" --no-block Do not wait until operation finished\n"
" --no-wall Don't send wall message before halt/power-off/reboot\n\n"
" clear-jobs Cancel all jobs\n"
" monitor Monitor unit/job changes\n"
" dump Dump server status\n"
+ " dot Dump dependency graph for dot(1)\n"
" snapshot [NAME] Create a snapshot\n"
" delete [NAME...] Remove one or more snapshots\n"
" daemon-reload Reload systemd manager configuration\n"
ARG_SESSION,
ARG_SYSTEM,
ARG_NO_BLOCK,
- ARG_NO_WALL
+ ARG_NO_WALL,
+ ARG_ORDER,
+ ARG_REQUIRE
};
static const struct option options[] = {
{ "no-block", no_argument, NULL, ARG_NO_BLOCK },
{ "no-wall", no_argument, NULL, ARG_NO_WALL },
{ "quiet", no_argument, NULL, 'q' },
+ { "order", no_argument, NULL, ARG_ORDER },
+ { "require", no_argument, NULL, ARG_REQUIRE },
{ NULL, 0, NULL, 0 }
};
arg_no_wall = true;
break;
+ case ARG_ORDER:
+ arg_dot = DOT_ORDER;
+ break;
+
+ case ARG_REQUIRE:
+ arg_dot = DOT_REQUIRE;
+ break;
+
case 'q':
arg_quiet = true;
break;
{ "status", MORE, 2, show },
{ "monitor", EQUAL, 1, monitor },
{ "dump", EQUAL, 1, dump },
+ { "dot", EQUAL, 1, dot },
{ "snapshot", LESS, 2, snapshot },
{ "delete", MORE, 2, delete_snapshot },
{ "daemon-reload", EQUAL, 1, clear_jobs },
{ "reboot", EQUAL, 1, start_special },
{ "default", EQUAL, 1, start_special },
{ "rescue", EQUAL, 1, start_special },
- { "emergency", EQUAL, 1, start_special }
+ { "emergency", EQUAL, 1, start_special },
};
int left;
projects / systemd / commitdiff