From b56feb27b829f7babd41dfa610d191ddf1c9aa03 Mon Sep 17 00:00:00 2001
From: Michal Schmidt <mschmidt@redhat.com>
Date: Thu, 19 Jan 2012 23:58:07 +0100
Subject: [PATCH] service: add missing pid file unwatch in the destructor
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The pid file watch could outlive the service unit if a daemon-reload
request came at the right time. The inotify event would then be
delivered to who knows where.

Fix it by unwatching in the service destructor.

Further changes will be needed to preserve the state of the pid file
watch across daemon-reload. For now let's just fix the crash observed
by Jóhann Guðmundsson:
Assertion 's->state == SERVICE_START || s->state == SERVICE_START_POST'
failed at src/service.c:2609, function service_fd_event().  Aborting

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=783118
(cherry picked from commit 3e52541ef51b1004357fbcd4bf863fb955ab83e9)

Conflicts:

	src/service.c
---
 src/service.c |   23 ++++++++++++-----------
 1 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/src/service.c b/src/service.c
index 81a2954..f99ee60 100644
--- a/src/service.c
+++ b/src/service.c
@@ -147,6 +147,17 @@ static void service_unwatch_main_pid(Service *s) {
         s->main_pid = 0;
 }
 
+static void service_unwatch_pid_file(Service *s) {
+        if (!s->pid_file_pathspec)
+                return;
+
+        log_debug("Stopping watch for %s's PID file %s", s->meta.id, s->pid_file_pathspec->path);
+        path_spec_unwatch(s->pid_file_pathspec, UNIT(s));
+        path_spec_done(s->pid_file_pathspec);
+        free(s->pid_file_pathspec);
+        s->pid_file_pathspec = NULL;
+}
+
 static int service_set_main_pid(Service *s, pid_t pid) {
         pid_t ppid;
 
@@ -222,6 +233,7 @@ static void service_done(Unit *u) {
          * our resources */
         service_unwatch_main_pid(s);
         service_unwatch_control_pid(s);
+        service_unwatch_pid_file(s);
 
         if (s->bus_name)  {
                 unit_unwatch_bus_name(UNIT(u), s->bus_name);
@@ -1381,17 +1393,6 @@ static void service_notify_sockets_dead(Service *s) {
         return;
 }
 
-static void service_unwatch_pid_file(Service *s) {
-        if (!s->pid_file_pathspec)
-                return;
-
-        log_debug("Stopping watch for %s's PID file %s", s->meta.id, s->pid_file_pathspec->path);
-        path_spec_unwatch(s->pid_file_pathspec, UNIT(s));
-        path_spec_done(s->pid_file_pathspec);
-        free(s->pid_file_pathspec);
-        s->pid_file_pathspec = NULL;
-}
-
 static void service_set_state(Service *s, ServiceState state) {
         ServiceState old_state;
         assert(s);