From: Lennart Poettering Date: Sat, 22 May 2010 02:27:24 +0000 (+0200) Subject: systemctl: add --block switch for synchronous starting of units X-Git-Tag: 0.git+20100605+dfd8ee-1~11^2^2~18 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7535cc788e37afaf9904d0ee8e2b98f1cb3a4cbd;p=systemd systemctl: add --block switch for synchronous starting of units --- diff --git a/fixme b/fixme index 513c32b6..0585d1d6 100644 --- a/fixme +++ b/fixme @@ -56,11 +56,6 @@ * teach dbus to talk to systemd when autospawning services -* Figure out which signal handlers we actually have to reset in the - forked off child - -* Add code to systemctl to wait for an operation to finish - Regularly: * look for close() vs. close_nointr() vs. close_nointr_nofail() diff --git a/src/dbus-job.c b/src/dbus-job.c index 3a6e7159..34e64fc6 100644 --- a/src/dbus-job.c +++ b/src/dbus-job.c @@ -197,15 +197,19 @@ oom: log_error("Failed to allocate job change signal."); } -void bus_job_send_removed_signal(Job *j) { +void bus_job_send_removed_signal(Job *j, bool success) { char *p = NULL; DBusMessage *m = NULL; + dbus_bool_t b = success; assert(j); - if (set_isempty(j->manager->subscribed) || !j->sent_dbus_new_signal) + if (set_isempty(j->manager->subscribed)) return; + if (!j->sent_dbus_new_signal) + bus_job_send_change_signal(j); + if (!(p = job_dbus_path(j))) goto oom; @@ -215,6 +219,7 @@ void bus_job_send_removed_signal(Job *j) { if (!dbus_message_append_args(m, DBUS_TYPE_UINT32, &j->id, DBUS_TYPE_OBJECT_PATH, &p, + DBUS_TYPE_BOOLEAN, &b, DBUS_TYPE_INVALID)) goto oom; diff --git a/src/dbus-job.h b/src/dbus-job.h index cf917605..46023588 100644 --- a/src/dbus-job.h +++ b/src/dbus-job.h @@ -25,7 +25,7 @@ #include void bus_job_send_change_signal(Job *j); -void bus_job_send_removed_signal(Job *j); +void bus_job_send_removed_signal(Job *j, bool success); extern const DBusObjectPathVTable bus_job_vtable; diff --git a/src/dbus-manager.c b/src/dbus-manager.c index 90ab8d1a..9833b6c8 100644 --- a/src/dbus-manager.c +++ b/src/dbus-manager.c @@ -81,6 +81,7 @@ " " \ " " \ " " \ + " " \ " " \ " " \ " " \ diff --git a/src/dbus-unit.c b/src/dbus-unit.c index 5c474c0c..ba428a8d 100644 --- a/src/dbus-unit.c +++ b/src/dbus-unit.c @@ -421,9 +421,12 @@ void bus_unit_send_removed_signal(Unit *u) { assert(u); - if (set_isempty(u->meta.manager->subscribed) || !u->meta.sent_dbus_new_signal) + if (set_isempty(u->meta.manager->subscribed)) return; + if (!u->meta.sent_dbus_new_signal) + bus_unit_send_change_signal(u); + if (!(p = unit_dbus_path(u))) goto oom; diff --git a/src/job.c b/src/job.c index 9937ed73..78fe1363 100644 --- a/src/job.c +++ b/src/job.c @@ -56,7 +56,7 @@ void job_free(Job *j) { /* Detach from next 'bigger' objects */ if (j->installed) { - bus_job_send_removed_signal(j); + bus_job_send_removed_signal(j, !j->failed); if (j->unit->meta.job == j) { j->unit->meta.job = NULL; @@ -476,6 +476,7 @@ int job_finish_and_invalidate(Job *j, bool success) { return 0; } + j->failed = !success; u = j->unit; t = j->type; job_free(j); diff --git a/src/job.h b/src/job.h index 1ae97b75..054aa530 100644 --- a/src/job.h +++ b/src/job.h @@ -108,6 +108,7 @@ struct Job { bool override:1; bool in_dbus_queue:1; bool sent_dbus_new_signal:1; + bool failed:1; }; Job* job_new(Manager *m, JobType type, Unit *unit); diff --git a/src/systemadm.vala b/src/systemadm.vala index b28759a0..9e4a2a23 100644 --- a/src/systemadm.vala +++ b/src/systemadm.vala @@ -728,7 +728,7 @@ public class MainWindow : Window { } while (unit_model.iter_next(ref iter)); } - public void on_job_removed(uint32 id, ObjectPath path) { + public void on_job_removed(uint32 id, ObjectPath path, bool success) { TreeIter iter; if (!(job_model.get_iter_first(out iter))) return; diff --git a/src/systemctl.vala b/src/systemctl.vala index 821be5a4..e1e8a0c8 100644 --- a/src/systemctl.vala +++ b/src/systemctl.vala @@ -24,7 +24,11 @@ static string type = null; static bool all = false; static bool replace = false; static bool session = false; -static Connection bus = null; +static bool block = false; +static Connection? bus = null; +static List jobs = null; +static MainLoop main_loop = null; +static int exit_code = 0; public static int job_info_compare(void* key1, void* key2) { Manager.JobInfo *j1 = (Manager.JobInfo*) key1; @@ -44,11 +48,11 @@ public static int unit_info_compare(void* key1, void* key2) { return Posix.strcmp(u1->id, u2->id); } -public void on_unit_changed(Unit u) { +public void monitor_on_unit_changed(Unit u) { stdout.printf("Unit %s changed.\n", u.id); } -public void on_unit_new(string id, ObjectPath path) { +public void monitor_on_unit_new(string id, ObjectPath path) { stdout.printf("Unit %s added.\n", id); Unit u = bus.get_object( @@ -56,17 +60,17 @@ public void on_unit_new(string id, ObjectPath path) { path, "org.freedesktop.systemd1.Unit") as Unit; - u.changed += on_unit_changed; + u.changed += monitor_on_unit_changed; /* FIXME: We leak memory here */ u.ref(); } -public void on_job_changed(Job j) { +public void monitor_on_job_changed(Job j) { stdout.printf("Job %u changed.\n", j.id); } -public void on_job_new(uint32 id, ObjectPath path) { +public void monitor_on_job_new(uint32 id, ObjectPath path) { stdout.printf("Job %u added.\n", id); Job j = bus.get_object( @@ -74,18 +78,34 @@ public void on_job_new(uint32 id, ObjectPath path) { path, "org.freedesktop.systemd1.Job") as Job; - j.changed += on_job_changed; + j.changed += monitor_on_job_changed; /* FIXME: We leak memory here */ j.ref(); } -public void on_unit_removed(string id, ObjectPath path) { +public void monitor_on_unit_removed(string id, ObjectPath path) { stdout.printf("Unit %s removed.\n", id); } -public void on_job_removed(uint32 id, ObjectPath path) { - stdout.printf("Job %u removed.\n", id); +public void monitor_on_job_removed(uint32 id, ObjectPath path, bool success) { + stdout.printf("Job %u removed (success=%i).\n", id, (int) success); +} + +public void block_on_job_removed(uint32 id, ObjectPath path, bool success) { + + for (unowned List i = jobs; i != null; i = i.next) + if (i.data == path) { + jobs.remove_link(i); + break; + } + + if (jobs == null) { + if (!success) + exit_code = 1; + + main_loop.quit(); + } } static const OptionEntry entries[] = { @@ -94,11 +114,11 @@ static const OptionEntry entries[] = { { "replace", 0, 0, OptionArg.NONE, out replace, "When installing a new job, replace existing conflicting ones", null }, { "session", 0, 0, OptionArg.NONE, out session, "Connect to session bus", null }, { "system", 0, OptionFlags.REVERSE, OptionArg.NONE, out session, "Connect to system bus", null }, + { "block", 0, 0, OptionArg.NONE, out block, "Wait until the operation finished", null }, { null } }; int main (string[] args) { - OptionContext context = new OptionContext("[COMMAND [ARGUMENT...]]"); context.add_main_entries(entries, null); context.set_description( @@ -226,6 +246,9 @@ int main (string[] args) { return 1; } + if (block) + manager.subscribe(); + for (int i = 2; i < args.length; i++) { ObjectPath p = manager.load_unit(args[i]); @@ -237,14 +260,19 @@ int main (string[] args) { string mode = replace ? "replace" : "fail"; + ObjectPath j = null; + if (args[1] == "start") - u.start(mode); + j = u.start(mode); else if (args[1] == "stop") - u.stop(mode); + j = u.stop(mode); else if (args[1] == "restart") - u.restart(mode); + j = u.restart(mode); else if (args[1] == "reload") - u.reload(mode); + j = u.reload(mode); + + if (block) + jobs.append(j); } } else if (args[1] == "isolate") { @@ -261,19 +289,24 @@ int main (string[] args) { p, "org.freedesktop.systemd1.Unit") as Unit; - u.start("isolate"); + ObjectPath j = u.start("isolate"); + + if (block) { + manager.subscribe(); + jobs.append(j); + } } else if (args[1] == "monitor") { manager.subscribe(); - manager.unit_new += on_unit_new; - manager.unit_removed += on_unit_removed; - manager.job_new += on_job_new; - manager.job_removed += on_job_removed; + manager.unit_new += monitor_on_unit_new; + manager.unit_removed += monitor_on_unit_removed; + manager.job_new += monitor_on_job_new; + manager.job_removed += monitor_on_job_removed; - MainLoop l = new MainLoop(); - l.run(); + main_loop = new MainLoop(); + main_loop.run(); } else if (args[1] == "dump") stdout.puts(manager.dump()); @@ -313,9 +346,17 @@ int main (string[] args) { return 1; } + if (jobs != null && block) { + manager.job_removed += block_on_job_removed; + + main_loop = new MainLoop(); + main_loop.run(); + } + } catch (DBus.Error e) { stderr.printf("%s\n".printf(e.message)); + return 1; } - return 0; + return exit_code; } diff --git a/src/systemd-interfaces.vala b/src/systemd-interfaces.vala index 7282bf3d..a8aeb755 100644 --- a/src/systemd-interfaces.vala +++ b/src/systemd-interfaces.vala @@ -71,7 +71,7 @@ public interface Manager : DBus.Object { public abstract signal void unit_new(string id, ObjectPath path); public abstract signal void unit_removed(string id, ObjectPath path); public abstract signal void job_new(uint32 id, ObjectPath path); - public abstract signal void job_removed(uint32 id, ObjectPath path); + public abstract signal void job_removed(uint32 id, ObjectPath path, bool success); } [DBus (name = "org.freedesktop.systemd1.Unit")]