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-rw-r--r--src/core/unit.c134
1 files changed, 96 insertions, 38 deletions
diff --git a/src/core/unit.c b/src/core/unit.c
index f00cfedb8..1194c524b 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -1941,8 +1941,9 @@ int unit_add_cgroup(Unit *u, CGroupBonding *b) {
assert(b->path);
if (!b->controller) {
- if (!(b->controller = strdup(SYSTEMD_CGROUP_CONTROLLER)))
- return -ENOMEM;
+ b->controller = strdup(SYSTEMD_CGROUP_CONTROLLER);
+ if (!b->controller)
+ return log_oom();
b->ours = true;
}
@@ -1956,7 +1957,8 @@ int unit_add_cgroup(Unit *u, CGroupBonding *b) {
l = hashmap_get(u->manager->cgroup_bondings, b->path);
LIST_PREPEND(CGroupBonding, by_path, l, b);
- if ((r = hashmap_replace(u->manager->cgroup_bondings, b->path, l)) < 0) {
+ r = hashmap_replace(u->manager->cgroup_bondings, b->path, l);
+ if (r < 0) {
LIST_REMOVE(CGroupBonding, by_path, l, b);
return r;
}
@@ -1969,26 +1971,21 @@ int unit_add_cgroup(Unit *u, CGroupBonding *b) {
}
char *unit_default_cgroup_path(Unit *u) {
- char *p;
-
assert(u);
if (u->instance) {
- char *t;
+ _cleanup_free_ char *t = NULL;
t = unit_name_template(u->id);
if (!t)
return NULL;
- p = strjoin(u->manager->cgroup_hierarchy, "/", t, "/", u->instance, NULL);
- free(t);
+ return strjoin(u->manager->cgroup_hierarchy, "/", t, "/", u->instance, NULL);
} else
- p = strjoin(u->manager->cgroup_hierarchy, "/", u->id, NULL);
-
- return p;
+ return strjoin(u->manager->cgroup_hierarchy, "/", u->id, NULL);
}
-int unit_add_cgroup_from_text(Unit *u, const char *name) {
+int unit_add_cgroup_from_text(Unit *u, const char *name, bool overwrite, CGroupBonding **ret) {
char *controller = NULL, *path = NULL;
CGroupBonding *b = NULL;
bool ours = false;
@@ -1997,7 +1994,8 @@ int unit_add_cgroup_from_text(Unit *u, const char *name) {
assert(u);
assert(name);
- if ((r = cg_split_spec(name, &controller, &path)) < 0)
+ r = cg_split_spec(name, &controller, &path);
+ if (r < 0)
return r;
if (!path) {
@@ -2013,16 +2011,42 @@ int unit_add_cgroup_from_text(Unit *u, const char *name) {
if (!path || !controller) {
free(path);
free(controller);
-
- return -ENOMEM;
+ return log_oom();
}
- if (cgroup_bonding_find_list(u->cgroup_bondings, controller)) {
+ b = cgroup_bonding_find_list(u->cgroup_bondings, controller);
+ if (b) {
+ if (streq(path, b->path)) {
+ free(path);
+ free(controller);
+
+ if (ret)
+ *ret = b;
+ return 0;
+ }
+
+ if (overwrite && !b->essential) {
+ free(controller);
+
+ free(b->path);
+ b->path = path;
+
+ b->ours = ours;
+ b->realized = false;
+
+ if (ret)
+ *ret = b;
+
+ return 1;
+ }
+
r = -EEXIST;
+ b = NULL;
goto fail;
}
- if (!(b = new0(CGroupBonding, 1))) {
+ b = new0(CGroupBonding, 1);
+ if (!b) {
r = -ENOMEM;
goto fail;
}
@@ -2032,10 +2056,14 @@ int unit_add_cgroup_from_text(Unit *u, const char *name) {
b->ours = ours;
b->essential = streq(controller, SYSTEMD_CGROUP_CONTROLLER);
- if ((r = unit_add_cgroup(u, b)) < 0)
+ r = unit_add_cgroup(u, b);
+ if (r < 0)
goto fail;
- return 0;
+ if (ret)
+ *ret = b;
+
+ return 1;
fail:
free(path);
@@ -2057,10 +2085,12 @@ static int unit_add_one_default_cgroup(Unit *u, const char *controller) {
if (cgroup_bonding_find_list(u->cgroup_bondings, controller))
return 0;
- if (!(b = new0(CGroupBonding, 1)))
+ b = new0(CGroupBonding, 1);
+ if (!b)
return -ENOMEM;
- if (!(b->controller = strdup(controller)))
+ b->controller = strdup(controller);
+ if (!b)
goto fail;
b->path = unit_default_cgroup_path(u);
@@ -2070,7 +2100,8 @@ static int unit_add_one_default_cgroup(Unit *u, const char *controller) {
b->ours = true;
b->essential = streq(controller, SYSTEMD_CGROUP_CONTROLLER);
- if ((r = unit_add_cgroup(u, b)) < 0)
+ r = unit_add_cgroup(u, b);
+ if (r < 0)
goto fail;
return 0;
@@ -2096,7 +2127,8 @@ int unit_add_default_cgroups(Unit *u) {
if (!u->manager->cgroup_hierarchy)
return 0;
- if ((r = unit_add_one_default_cgroup(u, NULL)) < 0)
+ r = unit_add_one_default_cgroup(u, NULL);
+ if (r < 0)
return r;
STRV_FOREACH(c, u->manager->default_controllers)
@@ -2111,12 +2143,18 @@ int unit_add_default_cgroups(Unit *u) {
CGroupBonding* unit_get_default_cgroup(Unit *u) {
assert(u);
- return cgroup_bonding_find_list(u->cgroup_bondings, SYSTEMD_CGROUP_CONTROLLER);
+ return cgroup_bonding_find_list(u->cgroup_bondings, NULL);
}
-int unit_add_cgroup_attribute(Unit *u, const char *controller, const char *name, const char *value, CGroupAttributeMapCallback map_callback) {
- int r;
- char *c = NULL;
+int unit_add_cgroup_attribute(
+ Unit *u,
+ const char *controller,
+ const char *name,
+ const char *value,
+ CGroupAttributeMapCallback map_callback,
+ CGroupAttribute **ret) {
+
+ _cleanup_free_ char *c = NULL;
CGroupAttribute *a;
assert(u);
@@ -2137,16 +2175,36 @@ int unit_add_cgroup_attribute(Unit *u, const char *controller, const char *name,
controller = c;
}
- if (streq(controller, SYSTEMD_CGROUP_CONTROLLER)) {
- r = -EINVAL;
- goto finish;
+ if (streq(controller, SYSTEMD_CGROUP_CONTROLLER))
+ return -EINVAL;
+
+ a = cgroup_attribute_find_list(u->cgroup_attributes, controller, name);
+ if (a) {
+ char *v;
+
+ if (streq(value, a->value)) {
+ if (ret)
+ *ret = a;
+
+ return 0;
+ }
+
+ v = strdup(value);
+ if (!v)
+ return -ENOMEM;
+
+ free(a->value);
+ a->value = v;
+
+ if (ret)
+ *ret = a;
+
+ return 1;
}
a = new0(CGroupAttribute, 1);
- if (!a) {
- r = -ENOMEM;
- goto finish;
- }
+ if (!a)
+ return -ENOMEM;
if (c) {
a->controller = c;
@@ -2167,14 +2225,14 @@ int unit_add_cgroup_attribute(Unit *u, const char *controller, const char *name,
}
a->map_callback = map_callback;
+ a->unit = u;
LIST_PREPEND(CGroupAttribute, by_unit, u->cgroup_attributes, a);
- r = 0;
+ if (ret)
+ *ret = a;
-finish:
- free(c);
- return r;
+ return 1;
}
int unit_load_related_unit(Unit *u, const char *type, Unit **_found) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-29 08:56:13 +0000