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core: generalize FailureAction= move it from service to unit

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All kinds of units can fail, hence it makes sense to offer this as
generic concept for all unit types.
This commit is contained in:
Lennart Poettering 2017-11-16 15:02:56 +01:00
parent 9990ea0e59
commit 53c35a766f
9 changed files with 19 additions and 17 deletions
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8
man/systemd.service.xml
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@ -893,14 +893,6 @@
effect.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>FailureAction=</varname></term>
<listitem><para>Configure the action to take when the service enters a failed state. Takes the same values as
the unit setting <varname>StartLimitAction=</varname> and executes the same actions (see
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>). Defaults to
<option>none</option>. </para></listitem>
</varlistentry>
<varlistentry>
<term><varname>FileDescriptorStoreMax=</varname></term>
<listitem><para>Configure how many file descriptors may be stored in the service manager for the service using

10
man/systemd.unit.xml
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@ -877,11 +877,19 @@
semantics. Defaults to <option>none</option>.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>FailureAction=</varname></term>
<listitem><para>Configure the action to take when the unit enters the failed state. Takes the same values as
the setting <varname>StartLimitAction=</varname> setting and executes the same actions (see
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>). Defaults to
<option>none</option>. </para></listitem>
</varlistentry>
<varlistentry>
<term><varname>RebootArgument=</varname></term>
<listitem><para>Configure the optional argument for the
<citerefentry><refentrytitle>reboot</refentrytitle><manvolnum>2</manvolnum></citerefentry> system call if
<varname>StartLimitAction=</varname> or a service's <varname>FailureAction=</varname> is a reboot action. This
<varname>StartLimitAction=</varname> or <varname>FailureAction=</varname> is a reboot action. This
works just like the optional argument to <command>systemctl reboot</command> command.</para></listitem>
</varlistentry>

2
src/core/dbus-service.c
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@ -51,7 +51,6 @@ const sd_bus_vtable bus_service_vtable[] = {
SD_BUS_PROPERTY("RuntimeMaxUSec", "t", bus_property_get_usec, offsetof(Service, runtime_max_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("WatchdogUSec", "t", bus_property_get_usec, offsetof(Service, watchdog_usec), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("WatchdogTimestamp", offsetof(Service, watchdog_timestamp), 0),
SD_BUS_PROPERTY("FailureAction", "s", property_get_emergency_action, offsetof(Service, emergency_action), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("PermissionsStartOnly", "b", bus_property_get_bool, offsetof(Service, permissions_start_only), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RootDirectoryStartOnly", "b", bus_property_get_bool, offsetof(Service, root_directory_start_only), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RemainAfterExit", "b", bus_property_get_bool, offsetof(Service, remain_after_exit), SD_BUS_VTABLE_PROPERTY_CONST),
@ -82,6 +81,7 @@ const sd_bus_vtable bus_service_vtable[] = {
SD_BUS_PROPERTY("StartLimitInterval", "t", bus_property_get_usec, offsetof(Unit, start_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned, offsetof(Unit, start_limit.burst), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
SD_BUS_PROPERTY("StartLimitAction", "s", property_get_emergency_action, offsetof(Unit, start_limit_action), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
SD_BUS_PROPERTY("FailureAction", "s", property_get_emergency_action, offsetof(Unit, failure_action), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
SD_BUS_PROPERTY("RebootArgument", "s", NULL, offsetof(Unit, reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
SD_BUS_VTABLE_END
};

1
src/core/dbus-unit.c
View File

@ -798,6 +798,7 @@ const sd_bus_vtable bus_unit_vtable[] = {
SD_BUS_PROPERTY("StartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Unit, start_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned, offsetof(Unit, start_limit.burst), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("StartLimitAction", "s", property_get_emergency_action, offsetof(Unit, start_limit_action), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("FailureAction", "s", property_get_emergency_action, offsetof(Unit, failure_action), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RebootArgument", "s", NULL, offsetof(Unit, reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("InvocationID", "ay", bus_property_get_id128, offsetof(Unit, invocation_id), 0),
SD_BUS_PROPERTY("CollectMode", "s", property_get_collect_mode, offsetof(Unit, collect_mode), 0),

5
src/core/load-fragment-gperf.gperf.m4
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@ -223,6 +223,7 @@ m4_dnl The following is a legacy alias name for compatibility
Unit.StartLimitInterval, config_parse_sec, 0, offsetof(Unit, start_limit.interval)
Unit.StartLimitBurst, config_parse_unsigned, 0, offsetof(Unit, start_limit.burst)
Unit.StartLimitAction, config_parse_emergency_action, 0, offsetof(Unit, start_limit_action)
Unit.FailureAction, config_parse_emergency_action, 0, offsetof(Unit, failure_action)
Unit.RebootArgument, config_parse_unit_string_printf, 0, offsetof(Unit, reboot_arg)
Unit.ConditionPathExists, config_parse_unit_condition_path, CONDITION_PATH_EXISTS, offsetof(Unit, conditions)
Unit.ConditionPathExistsGlob, config_parse_unit_condition_path, CONDITION_PATH_EXISTS_GLOB, offsetof(Unit, conditions)
@ -281,12 +282,12 @@ Service.TimeoutStartSec, config_parse_service_timeout, 0,
Service.TimeoutStopSec, config_parse_service_timeout, 0, 0
Service.RuntimeMaxSec, config_parse_sec, 0, offsetof(Service, runtime_max_usec)
Service.WatchdogSec, config_parse_sec, 0, offsetof(Service, watchdog_usec)
m4_dnl The following three only exist for compatibility, they moved into Unit, see above
m4_dnl The following five only exist for compatibility, they moved into Unit, see above
Service.StartLimitInterval, config_parse_sec, 0, offsetof(Unit, start_limit.interval)
Service.StartLimitBurst, config_parse_unsigned, 0, offsetof(Unit, start_limit.burst)
Service.StartLimitAction, config_parse_emergency_action, 0, offsetof(Unit, start_limit_action)
Service.FailureAction, config_parse_emergency_action, 0, offsetof(Unit, failure_action)
Service.RebootArgument, config_parse_unit_path_printf, 0, offsetof(Unit, reboot_arg)
Service.FailureAction, config_parse_emergency_action, 0, offsetof(Service, emergency_action)
Service.Type, config_parse_service_type, 0, offsetof(Service, type)
Service.Restart, config_parse_service_restart, 0, offsetof(Service, restart)
Service.PermissionsStartOnly, config_parse_bool, 0, offsetof(Service, permissions_start_only)

3
src/core/service.c
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@ -1532,9 +1532,6 @@ static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart)
service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
if (s->result != SERVICE_SUCCESS)
emergency_action(UNIT(s)->manager, s->emergency_action, UNIT(s)->reboot_arg, "service failed");
if (allow_restart && service_shall_restart(s)) {
r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec));

2
src/core/service.h
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@ -174,8 +174,6 @@ struct Service {
char *status_text;
int status_errno;
EmergencyAction emergency_action;
UnitRef accept_socket;
sd_event_source *timer_event_source;

3
src/core/unit.c
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@ -2503,6 +2503,9 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_su
* units go directly from starting to inactive,
* without ever entering started.) */
unit_check_binds_to(u);
if (os != UNIT_FAILED && ns == UNIT_FAILED)
(void) emergency_action(u->manager, u->failure_action, u->reboot_arg, "unit failed");
}
unit_add_to_dbus_queue(u);

2
src/core/unit.h
View File

@ -248,6 +248,8 @@ struct Unit {
/* Put a ratelimit on unit starting */
RateLimit start_limit;
EmergencyAction start_limit_action;
EmergencyAction failure_action;
char *reboot_arg;
/* Make sure we never enter endless loops with the check unneeded logic, or the BindsTo= logic */