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-rw-r--r--src/core/dbus-unit.c37
-rw-r--r--src/core/load-fragment.c22
-rw-r--r--src/core/mount.c2
-rw-r--r--src/core/scope.c2
-rw-r--r--src/core/service.c2
-rw-r--r--src/core/socket.c2
-rw-r--r--src/core/swap.c2
-rw-r--r--src/core/unit.c35
-rw-r--r--src/core/unit.h3
9 files changed, 65 insertions, 42 deletions
diff --git a/src/core/dbus-unit.c b/src/core/dbus-unit.c
index 91c31987fe..1e6291e762 100644
--- a/src/core/dbus-unit.c
+++ b/src/core/dbus-unit.c
@@ -965,38 +965,39 @@ static int bus_unit_set_transient_property(
return 1;
- } else if (streq(name, "Slice") && UNIT_HAS_CGROUP_CONTEXT(u)) {
+ } else if (streq(name, "Slice")) {
+ Unit *slice;
const char *s;
+ if (!UNIT_HAS_CGROUP_CONTEXT(u))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "The slice property is only available for units with control groups.");
+ if (u->type == UNIT_SLICE)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Slice may not be set for slice units.");
+
r = sd_bus_message_read(message, "s", &s);
if (r < 0)
return r;
- if (!unit_name_is_valid(s, UNIT_NAME_PLAIN) || !endswith(s, ".slice"))
- return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid slice name %s", s);
+ if (!unit_name_is_valid(s, UNIT_NAME_PLAIN))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name '%s'", s);
- if (isempty(s)) {
- if (mode != UNIT_CHECK) {
- unit_ref_unset(&u->slice);
- unit_remove_drop_in(u, mode, name);
- }
- } else {
- Unit *slice;
+ r = manager_load_unit(u->manager, s, NULL, error, &slice);
+ if (r < 0)
+ return r;
+
+ if (slice->type != UNIT_SLICE)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit name '%s' is not a slice", s);
- r = manager_load_unit(u->manager, s, NULL, error, &slice);
+ if (mode != UNIT_CHECK) {
+ r = unit_set_slice(u, slice);
if (r < 0)
return r;
- if (slice->type != UNIT_SLICE)
- return -EINVAL;
-
- if (mode != UNIT_CHECK) {
- unit_ref_set(&u->slice, slice);
- unit_write_drop_in_private_format(u, mode, name, "Slice=%s\n", s);
- }
+ unit_write_drop_in_private_format(u, mode, name, "Slice=%s\n", s);
}
return 1;
+
} else if (STR_IN_SET(name,
"Requires", "RequiresOverridable",
"Requisite", "RequisiteOverridable",
diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
index 721da3470e..745291c5c6 100644
--- a/src/core/load-fragment.c
+++ b/src/core/load-fragment.c
@@ -2602,7 +2602,7 @@ int config_parse_unit_slice(
void *userdata) {
_cleanup_free_ char *k = NULL;
- Unit *u = userdata, *slice;
+ Unit *u = userdata, *slice = NULL;
int r;
assert(filename);
@@ -2611,29 +2611,23 @@ int config_parse_unit_slice(
assert(u);
r = unit_name_printf(u, rvalue, &k);
- if (r < 0)
- log_syntax(unit, LOG_ERR, filename, line, -r,
- "Failed to resolve unit specifiers on %s. Ignoring.", rvalue);
- if (!k) {
- k = strdup(rvalue);
- if (!k)
- return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers on %s. Ignoring.", rvalue);
+ return 0;
}
r = manager_load_unit(u->manager, k, NULL, NULL, &slice);
if (r < 0) {
- log_syntax(unit, LOG_ERR, filename, line, -r,
- "Failed to load slice unit %s. Ignoring.", k);
+ log_syntax(unit, LOG_ERR, filename, line, r, "Failed to load slice unit %s. Ignoring.", k);
return 0;
}
- if (slice->type != UNIT_SLICE) {
- log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Slice unit %s is not a slice. Ignoring.", k);
+ r = unit_set_slice(u, slice);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Failed to assign slice %s to unit %s. Ignoring.", slice->id, u->id);
return 0;
}
- unit_ref_set(&u->slice, slice);
return 0;
}
diff --git a/src/core/mount.c b/src/core/mount.c
index 7e19e66a51..2b81d17b9c 100644
--- a/src/core/mount.c
+++ b/src/core/mount.c
@@ -521,7 +521,7 @@ static int mount_add_extras(Mount *m) {
if (r < 0)
return r;
- r = unit_add_default_slice(u, &m->cgroup_context);
+ r = unit_set_default_slice(u);
if (r < 0)
return r;
diff --git a/src/core/scope.c b/src/core/scope.c
index bf89936153..c594ab5294 100644
--- a/src/core/scope.c
+++ b/src/core/scope.c
@@ -164,7 +164,7 @@ static int scope_load(Unit *u) {
if (r < 0)
return r;
- r = unit_add_default_slice(u, &s->cgroup_context);
+ r = unit_set_default_slice(u);
if (r < 0)
return r;
diff --git a/src/core/service.c b/src/core/service.c
index 097e7c710c..3c4232417d 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -556,7 +556,7 @@ static int service_add_extras(Service *s) {
if (r < 0)
return r;
- r = unit_add_default_slice(UNIT(s), &s->cgroup_context);
+ r = unit_set_default_slice(UNIT(s));
if (r < 0)
return r;
diff --git a/src/core/socket.c b/src/core/socket.c
index aa65c5b7a0..1014fad626 100644
--- a/src/core/socket.c
+++ b/src/core/socket.c
@@ -345,7 +345,7 @@ static int socket_add_extras(Socket *s) {
if (r < 0)
return r;
- r = unit_add_default_slice(u, &s->cgroup_context);
+ r = unit_set_default_slice(u);
if (r < 0)
return r;
}
diff --git a/src/core/swap.c b/src/core/swap.c
index 349fd6f7b9..4f3ddc9f04 100644
--- a/src/core/swap.c
+++ b/src/core/swap.c
@@ -326,7 +326,7 @@ static int swap_load(Unit *u) {
if (r < 0)
return r;
- r = unit_add_default_slice(u, &s->cgroup_context);
+ r = unit_set_default_slice(u);
if (r < 0)
return r;
diff --git a/src/core/unit.c b/src/core/unit.c
index 2ad49fd50b..9afb5736d7 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -2424,14 +2424,42 @@ char *unit_default_cgroup_path(Unit *u) {
return strjoin(u->manager->cgroup_root, "/", escaped, NULL);
}
-int unit_add_default_slice(Unit *u, CGroupContext *c) {
+int unit_set_slice(Unit *u, Unit *slice) {
+ assert(u);
+ assert(slice);
+
+ /* Sets the unit slice if it has not been set before. Is extra
+ * careful, to only allow this for units that actually have a
+ * cgroup context. Also, we don't allow to set this for slices
+ * (since the parent slice is derived from the name). Make
+ * sure the unit we set is actually a slice. */
+
+ if (!UNIT_HAS_CGROUP_CONTEXT(u))
+ return -EOPNOTSUPP;
+
+ if (u->type == UNIT_SLICE)
+ return -EINVAL;
+
+ if (slice->type != UNIT_SLICE)
+ return -EINVAL;
+
+ if (UNIT_DEREF(u->slice) == slice)
+ return 0;
+
+ if (UNIT_ISSET(u->slice))
+ return -EBUSY;
+
+ unit_ref_set(&u->slice, slice);
+ return 1;
+}
+
+int unit_set_default_slice(Unit *u) {
_cleanup_free_ char *b = NULL;
const char *slice_name;
Unit *slice;
int r;
assert(u);
- assert(c);
if (UNIT_ISSET(u->slice))
return 0;
@@ -2471,8 +2499,7 @@ int unit_add_default_slice(Unit *u, CGroupContext *c) {
if (r < 0)
return r;
- unit_ref_set(&u->slice, slice);
- return 0;
+ return unit_set_slice(u, slice);
}
const char *unit_slice_name(Unit *u) {
diff --git a/src/core/unit.h b/src/core/unit.h
index 8da12356f8..bc26653247 100644
--- a/src/core/unit.h
+++ b/src/core/unit.h
@@ -494,7 +494,8 @@ int unit_load_fragment_and_dropin(Unit *u);
int unit_load_fragment_and_dropin_optional(Unit *u);
int unit_load(Unit *unit);
-int unit_add_default_slice(Unit *u, CGroupContext *c);
+int unit_set_slice(Unit *u, Unit *slice);
+int unit_set_default_slice(Unit *u);
const char *unit_description(Unit *u) _pure_;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-03 08:38:10 +0000