core: add support for a configurable system-wide start-up timeout

When this system-wide start-up timeout is hit we execute one of the
failure actions already implemented for services that fail.

This should not only be useful on embedded devices, but also on laptops
which have the power-button reachable when the lid is closed. This
devices, when in a backpack might get powered on by accident due to the
easily reachable power button. We want to make sure that the system
turns itself off if it starts up due this after a while.

When the system manages to fully start-up logind will suspend the
machine by default if the lid is closed. However, in some cases we don't
even get as far as logind, and the boot hangs much earlier, for example
because we ask for a LUKS password that nobody ever enters.

Yeah, this is a real-life problem on my Yoga 13, which has one of those
easily accessible power buttons, even if the device is closed.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/core/manager.h b/src/core/manager.h
index 7cb76f7f00..7d26c3adea 100644
--- a/src/core/manager.h
+++ b/src/core/manager.h
@@ -33,6 +33,8 @@
 /* Enforce upper limit how many names we allow */
 #define MANAGER_MAX_NAMES 131072 /* 128K */
 
+#define DEFAULT_MANAGER_START_TIMEOUT_USEC (15*USEC_PER_MINUTE)
+
 typedef struct Manager Manager;
 
 typedef enum ManagerState {
@@ -69,6 +71,7 @@ typedef enum ManagerExitCode {
 #include "unit-name.h"
 #include "exit-status.h"
 #include "show-status.h"
+#include "failure-action.h"
 
 struct Manager {
         /* Note that the set of units we know of is allowed to be
@@ -152,6 +155,7 @@ struct Manager {
         dual_timestamp initrd_timestamp;
         dual_timestamp userspace_timestamp;
         dual_timestamp finish_timestamp;
+
         dual_timestamp security_start_timestamp;
         dual_timestamp security_finish_timestamp;
         dual_timestamp generators_start_timestamp;
@@ -279,6 +283,12 @@ struct Manager {
 
         /* Used for processing polkit authorization responses */
         Hashmap *polkit_registry;
+
+        /* System wide startup timeouts */
+        usec_t start_timeout_usec;
+        sd_event_source *start_timeout_event_source;
+        FailureAction start_timeout_action;
+        char *start_timeout_reboot_arg;
 };
 
 int manager_new(SystemdRunningAs running_as, bool test_run, Manager **m);