diff options
Diffstat (limited to 'src/systemctl.c')
| -rw-r--r-- | src/systemctl.c | 142 |
1 files changed, 140 insertions, 2 deletions
diff --git a/src/systemctl.c b/src/systemctl.c index 15e5ecf437..cf2871dda1 100644 --- a/src/systemctl.c +++ b/src/systemctl.c @@ -52,6 +52,7 @@ static bool arg_no_wtmp = false; static bool arg_no_sync = false; static bool arg_no_wall = false; static bool arg_dry = false; +static bool arg_quiet = false; static char **arg_wall = NULL; enum action { ACTION_INVALID, @@ -849,6 +850,128 @@ static int start_special(DBusConnection *bus, char **args, unsigned n) { return start_unit(bus, args, n); } +static int check_unit(DBusConnection *bus, char **args, unsigned n) { + DBusMessage *m = NULL, *reply = NULL; + const char + *interface = "org.freedesktop.systemd1.Unit", + *property = "ActiveState"; + int r = -EADDRNOTAVAIL; + DBusError error; + unsigned i; + + assert(bus); + assert(args); + + dbus_error_init(&error); + + for (i = 1; i < n; i++) { + const char *path = NULL; + const char *state; + DBusMessageIter iter, sub; + + if (!(m = dbus_message_new_method_call( + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "GetUnit"))) { + log_error("Could not allocate message."); + r = -ENOMEM; + goto finish; + } + + if (!dbus_message_append_args(m, + DBUS_TYPE_STRING, &args[i], + 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))) { + + /* Hmm, cannot figure out anything about this unit... */ + if (!arg_quiet) + puts("unknown"); + + continue; + } + + if (!dbus_message_get_args(reply, &error, + DBUS_TYPE_OBJECT_PATH, &path, + DBUS_TYPE_INVALID)) { + log_error("Failed to parse reply: %s", error.message); + r = -EIO; + goto finish; + } + + dbus_message_unref(m); + if (!(m = dbus_message_new_method_call( + "org.freedesktop.systemd1", + path, + "org.freedesktop.DBus.Properties", + "Get"))) { + log_error("Could not allocate message."); + r = -ENOMEM; + goto finish; + } + + if (!dbus_message_append_args(m, + DBUS_TYPE_STRING, &interface, + DBUS_TYPE_STRING, &property, + DBUS_TYPE_INVALID)) { + log_error("Could not append arguments to message."); + r = -ENOMEM; + goto finish; + } + + dbus_message_unref(reply); + 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_VARIANT) { + log_error("Failed to parse reply."); + r = -EIO; + goto finish; + } + + dbus_message_iter_recurse(&iter, &sub); + + if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) { + log_error("Failed to parse reply."); + r = -EIO; + goto finish; + } + + dbus_message_iter_get_basic(&sub, &state); + + if (!arg_quiet) + puts(state); + + if (streq(state, "active") || startswith(state, "active-")) + r = 0; + + dbus_message_unref(m); + dbus_message_unref(reply); + m = reply = NULL; + } + +finish: + if (m) + dbus_message_unref(m); + + if (reply) + dbus_message_unref(reply); + + dbus_error_free(&error); + + return r; + +} + static DBusHandlerResult monitor_filter(DBusConnection *connection, DBusMessage *message, void *data) { DBusError error; DBusMessage *m = NULL, *reply = NULL; @@ -1205,7 +1328,9 @@ static int snapshot(DBusConnection *bus, char **args, unsigned n) { } dbus_message_iter_get_basic(&sub, &id); - puts(id); + + if (!arg_quiet) + puts(id); r = 0; finish: @@ -1436,6 +1561,7 @@ static int systemctl_help(void) { " --replace When installing a new job, replace existing conflicting ones\n" " --system Connect to system bus\n" " --session Connect to session bus\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" "Commands:\n" @@ -1449,6 +1575,7 @@ static int systemctl_help(void) { " restart [NAME...] Restart one or more units\n" " reload [NAME...] Reload one or more units\n" " isolate [NAME] Start one unit and stop all others\n" + " check [NAME...] Check whether any of the passed units are active\n" " monitor Monitor unit/job changes\n" " dump Dump server status\n" " snapshot [NAME] Create a snapshot\n" @@ -1553,6 +1680,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) { { "system", no_argument, NULL, ARG_SYSTEM }, { "no-block", no_argument, NULL, ARG_NO_BLOCK }, { "no-wall", no_argument, NULL, ARG_NO_WALL }, + { "quiet", no_argument, NULL, 'q' }, { NULL, 0, NULL, 0 } }; @@ -1561,7 +1689,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) { assert(argc >= 0); assert(argv); - while ((c = getopt_long(argc, argv, "hta", options, NULL)) >= 0) { + while ((c = getopt_long(argc, argv, "htaq", options, NULL)) >= 0) { switch (c) { @@ -1597,6 +1725,10 @@ static int systemctl_parse_argv(int argc, char *argv[]) { arg_no_wall = true; break; + case 'q': + arg_quiet = true; + break; + case '?': return -EINVAL; @@ -2108,6 +2240,7 @@ static int systemctl_main(DBusConnection *bus, int argc, char *argv[]) { { "reload", MORE, 2, start_unit }, { "restart", MORE, 2, start_unit }, { "isolate", EQUAL, 2, start_unit }, + { "check", MORE, 2, check_unit }, { "monitor", EQUAL, 1, monitor }, { "dump", EQUAL, 1, dump }, { "snapshot", LESS, 2, snapshot }, @@ -2138,6 +2271,11 @@ static int systemctl_main(DBusConnection *bus, int argc, char *argv[]) { /* Special rule: no arguments means "list-units" */ i = 0; else { + if (streq(argv[optind], "help")) { + systemctl_help(); + return 0; + } + for (i = 0; i < ELEMENTSOF(verbs); i++) if (streq(argv[optind], verbs[i].verb)) break; |