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unit: implement new PropagateReloadTo=/PropagateReloadFrom= operations

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This commit is contained in:
Lennart Poettering 2012-01-11 02:47:14 +01:00
parent bd1a698180
commit 4dcc1cb415
6 changed files with 51 additions and 3 deletions
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16
man/systemd.unit.xml
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@ -509,6 +509,22 @@
state.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>PropagateReloadTo=</varname></term>
<term><varname>PropagateReloadFrom=</varname></term>
<listitem><para>Lists one or more
units where reload requests on the
unit will be propagated to/on the
other unit will be propagated
from. Issuing a reload request on a
unit will automatically also enqueue a
reload request on all units that the
reload request shall be propagated to
via these two
settings.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>OnFailureIsolate=</varname></term>

6
src/dbus-unit.h
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@ -80,6 +80,10 @@
" <property name=\"Before\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"After\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"OnFailure\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"Triggers\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"TriggeredBy\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"PropagateReloadTo\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"PropagateReloadFrom\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"Description\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"LoadState\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"ActiveState\" type=\"s\" access=\"read\"/>\n" \
@ -143,6 +147,8 @@
{ "org.freedesktop.systemd1.Unit", "OnFailure", bus_unit_append_dependencies, "as", u->meta.dependencies[UNIT_ON_FAILURE] }, \
{ "org.freedesktop.systemd1.Unit", "Triggers", bus_unit_append_dependencies, "as", u->meta.dependencies[UNIT_TRIGGERS] }, \
{ "org.freedesktop.systemd1.Unit", "TriggeredBy", bus_unit_append_dependencies, "as", u->meta.dependencies[UNIT_TRIGGERED_BY] }, \
{ "org.freedesktop.systemd1.Unit", "PropagateReloadTo", bus_unit_append_dependencies, "as", u->meta.dependencies[UNIT_PROPAGATE_RELOAD_TO] }, \
{ "org.freedesktop.systemd1.Unit", "PropagateReloadFrom", bus_unit_append_dependencies, "as", u->meta.dependencies[UNIT_PROPAGATE_RELOAD_FROM] }, \
{ "org.freedesktop.systemd1.Unit", "Description", bus_unit_append_description, "s", u }, \
{ "org.freedesktop.systemd1.Unit", "LoadState", bus_unit_append_load_state, "s", &u->meta.load_state }, \
{ "org.freedesktop.systemd1.Unit", "ActiveState", bus_unit_append_active_state, "s", u }, \

2
src/load-fragment-gperf.gperf.m4
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@ -100,6 +100,8 @@ Unit.Conflicts, config_parse_unit_deps, UNIT_CONFLI
Unit.Before, config_parse_unit_deps, UNIT_BEFORE, 0
Unit.After, config_parse_unit_deps, UNIT_AFTER, 0
Unit.OnFailure, config_parse_unit_deps, UNIT_ON_FAILURE, 0
Unit.PropagateReloadTo, config_parse_unit_deps, UNIT_PROPAGATE_RELOAD_TO, 0
Unit.PropagateReloadFrom, config_parse_unit_deps, UNIT_PROPAGATE_RELOAD_FROM, 0
Unit.StopWhenUnneeded, config_parse_bool, 0, offsetof(Meta, stop_when_unneeded)
Unit.RefuseManualStart, config_parse_bool, 0, offsetof(Meta, refuse_manual_start)
Unit.RefuseManualStop, config_parse_bool, 0, offsetof(Meta, refuse_manual_stop)

18
src/manager.c
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@ -1610,7 +1610,9 @@ static int transaction_add_job_and_dependencies(
dbus_error_free(e);
}
} else if (type == JOB_STOP || type == JOB_RESTART || type == JOB_TRY_RESTART) {
}
if (type == JOB_STOP || type == JOB_RESTART || type == JOB_TRY_RESTART) {
SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRED_BY], i)
if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) {
@ -1633,6 +1635,20 @@ static int transaction_add_job_and_dependencies(
}
}
if (type == JOB_RELOAD || type == JOB_RELOAD_OR_START) {
SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_PROPAGATE_RELOAD_TO], i) {
r = transaction_add_job_and_dependencies(m, JOB_RELOAD, dep, ret, false, override, false, false, ignore_order, e, NULL);
if (r < 0) {
log_warning("Cannot add dependency reload job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r));
if (e)
dbus_error_free(e);
}
}
}
/* JOB_VERIFY_STARTED, JOB_RELOAD require no dependency handling */
}

8
src/unit.c
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@ -1539,7 +1539,9 @@ int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_referen
[UNIT_REFERENCES] = UNIT_REFERENCED_BY,
[UNIT_REFERENCED_BY] = UNIT_REFERENCES,
[UNIT_TRIGGERS] = UNIT_TRIGGERED_BY,
[UNIT_TRIGGERED_BY] = UNIT_TRIGGERS
[UNIT_TRIGGERED_BY] = UNIT_TRIGGERS,
[UNIT_PROPAGATE_RELOAD_TO] = UNIT_PROPAGATE_RELOAD_FROM,
[UNIT_PROPAGATE_RELOAD_FROM] = UNIT_PROPAGATE_RELOAD_TO
};
int r, q = 0, v = 0, w = 0;
@ -2663,7 +2665,9 @@ static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = {
[UNIT_REFERENCED_BY] = "ReferencedBy",
[UNIT_ON_FAILURE] = "OnFailure",
[UNIT_TRIGGERS] = "Triggers",
[UNIT_TRIGGERED_BY] = "TriggeredBy"
[UNIT_TRIGGERED_BY] = "TriggeredBy",
[UNIT_PROPAGATE_RELOAD_TO] = "PropagateReloadTo",
[UNIT_PROPAGATE_RELOAD_FROM] = "PropagateReloadFrom"
};
DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency);

4
src/unit.h
View File

@ -124,6 +124,10 @@ enum UnitDependency {
UNIT_TRIGGERS,
UNIT_TRIGGERED_BY,
/* Propagate reloads */
UNIT_PROPAGATE_RELOAD_TO,
UNIT_PROPAGATE_RELOAD_FROM,
/* Reference information for GC logic */
UNIT_REFERENCES, /* Inverse of 'references' is 'referenced_by' */
UNIT_REFERENCED_BY,