-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
#include "alloc-util.h"
#include "dbus-slice.h"
#include "log.h"
+#include "slice.h"
#include "special.h"
#include "string-util.h"
#include "strv.h"
#include "unit-name.h"
#include "unit.h"
-#include "slice.h"
static const UnitActiveState state_translation_table[_SLICE_STATE_MAX] = {
[SLICE_DEAD] = UNIT_INACTIVE,
[SLICE_ACTIVE] = UNIT_ACTIVE
};
+static void slice_init(Unit *u) {
+ assert(u);
+ assert(u->load_state == UNIT_STUB);
+
+ u->ignore_on_isolate = true;
+}
+
static void slice_set_state(Slice *t, SliceState state) {
SliceState old_state;
assert(t);
assert(s);
+ if (!UNIT(s)->default_dependencies)
+ return 0;
+
/* Make sure slices are unloaded on shutdown */
r = unit_add_two_dependencies_by_name(
UNIT(s),
UNIT_BEFORE, UNIT_CONFLICTS,
- SPECIAL_SHUTDOWN_TARGET, NULL, true);
+ SPECIAL_SHUTDOWN_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT);
if (r < 0)
return r;
return 0;
}
-
static int slice_verify(Slice *s) {
_cleanup_free_ char *parent = NULL;
int r;
return 0;
}
+static int slice_load_root_slice(Unit *u) {
+ assert(u);
+
+ if (!unit_has_name(u, SPECIAL_ROOT_SLICE))
+ return 0;
+
+ u->perpetual = true;
+
+ /* The root slice is a bit special. For example it is always running and cannot be terminated. Because of its
+ * special semantics we synthesize it here, instead of relying on the unit file on disk. */
+
+ u->default_dependencies = false;
+ u->ignore_on_isolate = true;
+
+ if (!u->description)
+ u->description = strdup("Root Slice");
+ if (!u->documentation)
+ u->documentation = strv_new("man:systemd.special(7)", NULL);
+
+ return 1;
+}
+
static int slice_load(Unit *u) {
Slice *s = SLICE(u);
int r;
assert(s);
+ assert(u->load_state == UNIT_STUB);
+ r = slice_load_root_slice(u);
+ if (r < 0)
+ return r;
r = unit_load_fragment_and_dropin_optional(u);
if (r < 0)
return r;
if (r < 0)
return r;
- if (u->default_dependencies) {
- r = slice_add_default_dependencies(s);
- if (r < 0)
- return r;
- }
+ r = slice_add_default_dependencies(s);
+ if (r < 0)
+ return r;
}
return slice_verify(s);
static int slice_start(Unit *u) {
Slice *t = SLICE(u);
+ int r;
assert(t);
assert(t->state == SLICE_DEAD);
+ r = unit_acquire_invocation_id(u);
+ if (r < 0)
+ return r;
+
(void) unit_realize_cgroup(u);
- (void) unit_reset_cpu_usage(u);
+ (void) unit_reset_cpu_accounting(u);
+ (void) unit_reset_ip_accounting(u);
slice_set_state(t, SLICE_ACTIVE);
return 1;
u = manager_get_unit(m, SPECIAL_ROOT_SLICE);
if (!u) {
- u = unit_new(m, sizeof(Slice));
- if (!u) {
- log_oom();
- return;
- }
-
- r = unit_add_name(u, SPECIAL_ROOT_SLICE);
+ r = unit_new_for_name(m, sizeof(Slice), SPECIAL_ROOT_SLICE, &u);
if (r < 0) {
- unit_free(u);
- log_error_errno(r, "Failed to add -.slice name");
+ log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_SLICE " unit: %m");
return;
}
}
- u->default_dependencies = false;
- u->no_gc = true;
- u->ignore_on_isolate = true;
- u->refuse_manual_start = true;
- u->refuse_manual_stop = true;
+ u->perpetual = true;
SLICE(u)->deserialized_state = SLICE_ACTIVE;
- if (!u->description)
- u->description = strdup("Root Slice");
- if (!u->documentation)
- (void) strv_extend(&u->documentation, "man:systemd.special(7)");
-
unit_add_to_load_queue(u);
unit_add_to_dbus_queue(u);
}
"Install\0",
.private_section = "Slice",
- .no_alias = true,
- .no_instances = true,
+ .can_transient = true,
+ .init = slice_init,
.load = slice_load,
.coldplug = slice_coldplug,