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From c0aa64901aa4d5d7c917fccf0993819fb1a1262f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Tue, 16 Oct 2018 16:34:45 +0200
Subject: [PATCH] units: allow and use SuccessAction=exit-force in system
systemd-exit.service
C.f. 287419c119ef961db487a281162ab037eba70c61: 'systemctl exit 42' can be
used to set an exit value and pulls in exit.target, which pulls in systemd-exit.service,
which calls org.fdo.Manager.Exit, which calls method_exit(), which sets the objective
to MANAGER_EXIT. Allow the same to happen through SuccessAction=exit.
v2: update for 'exit' and 'exit-force'
(cherry picked from commit a400bd8c2a6285576edf8e2147e1d17aab129501)
Related: #1860899
---
man/systemd.unit.xml | 7 +++--
src/core/emergency-action.c | 27 +++++++++++--------
src/test/test-emergency-action.c | 6 ++---
units/meson.build | 2 +-
...d-exit.service.in => systemd-exit.service} | 5 +---
5 files changed, 24 insertions(+), 23 deletions(-)
rename units/{systemd-exit.service.in => systemd-exit.service} (88%)
diff --git a/man/systemd.unit.xml b/man/systemd.unit.xml
index 5772a6684e..e80c760dd6 100644
--- a/man/systemd.unit.xml
+++ b/man/systemd.unit.xml
@@ -881,9 +881,8 @@
Takes one of <option>none</option>, <option>reboot</option>, <option>reboot-force</option>,
<option>reboot-immediate</option>, <option>poweroff</option>, <option>poweroff-force</option>,
<option>poweroff-immediate</option>, <option>exit</option>, and <option>exit-force</option>. In system mode,
- all options except <option>exit</option> and <option>exit-force</option> are allowed. In user mode, only
- <option>none</option>, <option>exit</option>, and <option>exit-force</option> are allowed. Both options default
- to <option>none</option>.</para>
+ all options are allowed. In user mode, only <option>none</option>, <option>exit</option>, and
+ <option>exit-force</option> are allowed. Both options default to <option>none</option>.</para>
<para>If <option>none</option> is set, no action will be triggered. <option>reboot</option> causes a reboot
following the normal shutdown procedure (i.e. equivalent to <command>systemctl reboot</command>).
@@ -893,7 +892,7 @@
<citerefentry><refentrytitle>reboot</refentrytitle><manvolnum>2</manvolnum></citerefentry> system call, which
might result in data loss. Similarly, <option>poweroff</option>, <option>poweroff-force</option>,
<option>poweroff-immediate</option> have the effect of powering down the system with similar
- semantics. <option>exit</option> causes the user manager to exit following the normal shutdown procedure, and
+ semantics. <option>exit</option> causes the manager to exit following the normal shutdown procedure, and
<option>exit-force</option> causes it terminate without shutting down services.</para></listitem>
</varlistentry>
diff --git a/src/core/emergency-action.c b/src/core/emergency-action.c
index e9e757dfa3..44b92ae6f8 100644
--- a/src/core/emergency-action.c
+++ b/src/core/emergency-action.c
@@ -13,6 +13,7 @@
#include "special.h"
#include "string-table.h"
#include "terminal-util.h"
+#include "virt.h"
static void log_and_status(Manager *m, const char *message, const char *reason) {
log_warning("%s: %s", message, reason);
@@ -73,12 +74,14 @@ int emergency_action(
break;
case EMERGENCY_ACTION_EXIT:
- assert(MANAGER_IS_USER(m));
-
- log_and_status(m, "Exiting", reason);
+ if (MANAGER_IS_USER(m) || detect_container() > 0) {
+ log_and_status(m, "Exiting", reason);
+ (void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_EXIT_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL, NULL);
+ break;
+ }
- (void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_EXIT_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL, NULL);
- break;
+ log_notice("Doing \"poweroff\" action instead of an \"exit\" emergency action.");
+ _fallthrough_;
case EMERGENCY_ACTION_POWEROFF:
log_and_status(m, "Powering off", reason);
@@ -86,11 +89,14 @@ int emergency_action(
break;
case EMERGENCY_ACTION_EXIT_FORCE:
- assert(MANAGER_IS_USER(m));
+ if (MANAGER_IS_USER(m) || detect_container() > 0) {
+ log_and_status(m, "Exiting immediately", reason);
+ m->exit_code = MANAGER_EXIT;
+ break;
+ }
- log_and_status(m, "Exiting immediately", reason);
- m->exit_code = MANAGER_EXIT;
- break;
+ log_notice("Doing \"poweroff-force\" action instead of an \"exit-force\" emergency action.");
+ _fallthrough_;
case EMERGENCY_ACTION_POWEROFF_FORCE:
log_and_status(m, "Forcibly powering off", reason);
@@ -137,8 +143,7 @@ int parse_emergency_action(
if (x < 0)
return -EINVAL;
- if ((system && x >= _EMERGENCY_ACTION_FIRST_USER_ACTION) ||
- (!system && x != EMERGENCY_ACTION_NONE && x < _EMERGENCY_ACTION_FIRST_USER_ACTION))
+ if (!system && x != EMERGENCY_ACTION_NONE && x < _EMERGENCY_ACTION_FIRST_USER_ACTION)
return -EOPNOTSUPP;
*ret = x;
diff --git a/src/test/test-emergency-action.c b/src/test/test-emergency-action.c
index 493b23227e..8ce28ed9f5 100644
--- a/src/test/test-emergency-action.c
+++ b/src/test/test-emergency-action.c
@@ -36,10 +36,10 @@ static void test_parse_emergency_action(void) {
assert_se(parse_emergency_action("poweroff-force", true, &x) == 0);
assert_se(x == EMERGENCY_ACTION_POWEROFF_FORCE);
assert_se(parse_emergency_action("poweroff-immediate", true, &x) == 0);
- assert_se(parse_emergency_action("exit", true, &x) == -EOPNOTSUPP);
- assert_se(parse_emergency_action("exit-force", true, &x) == -EOPNOTSUPP);
+ assert_se(parse_emergency_action("exit", true, &x) == 0);
+ assert_se(parse_emergency_action("exit-force", true, &x) == 0);
assert_se(parse_emergency_action("exit-forcee", true, &x) == -EINVAL);
- assert_se(x == EMERGENCY_ACTION_POWEROFF_IMMEDIATE);
+ assert_se(x == EMERGENCY_ACTION_EXIT_FORCE);
}
int main(int argc, char **argv) {
diff --git a/units/meson.build b/units/meson.build
index 6fa804148b..a74fa95195 100644
--- a/units/meson.build
+++ b/units/meson.build
@@ -86,6 +86,7 @@ units = [
'multi-user.target.wants/'],
['systemd-coredump.socket', 'ENABLE_COREDUMP',
'sockets.target.wants/'],
+ ['systemd-exit.service', ''],
['systemd-initctl.socket', '',
'sockets.target.wants/'],
['systemd-journal-gatewayd.socket', 'ENABLE_REMOTE HAVE_MICROHTTPD'],
@@ -135,7 +136,6 @@ in_units = [
['systemd-binfmt.service', 'ENABLE_BINFMT',
'sysinit.target.wants/'],
['systemd-coredump@.service', 'ENABLE_COREDUMP'],
- ['systemd-exit.service', ''],
['systemd-firstboot.service', 'ENABLE_FIRSTBOOT',
'sysinit.target.wants/'],
['systemd-fsck-root.service', ''],
diff --git a/units/systemd-exit.service.in b/units/systemd-exit.service
similarity index 88%
rename from units/systemd-exit.service.in
rename to units/systemd-exit.service
index 2fb6ebd767..6029b13a05 100644
--- a/units/systemd-exit.service.in
+++ b/units/systemd-exit.service
@@ -13,7 +13,4 @@ Documentation=man:systemd.special(7)
DefaultDependencies=no
Requires=shutdown.target
After=shutdown.target
-
-[Service]
-Type=oneshot
-ExecStart=@SYSTEMCTL@ --force exit
+SuccessAction=exit
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