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From 210dca6fd02254b8c4d145064cdfadbfef68dbd3 Mon Sep 17 00:00:00 2001
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From: Olivier Brunel <jjk@jjacky.com>
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Date: Thu, 14 Nov 2013 15:52:54 +0100
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Subject: [PATCH] Fix RemainAfterExit services keeping a hold on console
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When a service exits succesfully and has RemainAfterExit set, its hold
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on the console (in m->n_on_console) wasn't released since the unit state
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didn't change.
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---
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src/core/service.c | 16 ++++++++++++++++
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src/core/unit.c | 3 +++
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2 files changed, 19 insertions(+)
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diff --git a/src/core/service.c b/src/core/service.c
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index 5662180..62ae8f0 100644
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--- a/src/core/service.c
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+++ b/src/core/service.c
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@@ -1570,6 +1570,22 @@ static void service_set_state(Service *s, ServiceState state) {
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if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
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unit_destroy_cgroup(UNIT(s));
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+ /* For remain_after_exit services, let's see if we can "release" the
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+ * hold on the console, since unit_notify() only does that in case of
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+ * change of state */
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+ if (state == SERVICE_EXITED && s->remain_after_exit &&
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+ UNIT(s)->manager->n_on_console > 0) {
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+ ExecContext *ec = unit_get_exec_context(UNIT(s));
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+ if (ec && exec_context_may_touch_console(ec)) {
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+ Manager *m = UNIT(s)->manager;
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+
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+ m->n_on_console --;
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+ if (m->n_on_console == 0)
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+ /* unset no_console_output flag, since the console is free */
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+ m->no_console_output = false;
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+ }
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+ }
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+
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if (old_state != state)
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log_debug_unit(UNIT(s)->id,
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"%s changed %s -> %s", UNIT(s)->id,
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diff --git a/src/core/unit.c b/src/core/unit.c
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index acd9c74..6c2c4a0 100644
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--- a/src/core/unit.c
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+++ b/src/core/unit.c
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@@ -1449,6 +1449,9 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_su
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if (UNIT_IS_INACTIVE_OR_FAILED(ns))
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unit_destroy_cgroup(u);
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+ /* Note that this doesn't apply to RemainAfterExit services exiting
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+ * sucessfully, since there's no change of state in that case. Which is
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+ * why it is handled in service_set_state() */
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if (UNIT_IS_INACTIVE_OR_FAILED(os) != UNIT_IS_INACTIVE_OR_FAILED(ns)) {
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ExecContext *ec = unit_get_exec_context(u);
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if (ec && exec_context_may_touch_console(ec)) {
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