On systems without properly setup systemd, cg_get_root_path returns
-ENOENT. This means that busctl doesn't display much information.
busctl monitor also fails whenever it intercepts messages.
This fix fakes creates a fake "/" root cgroup which lets busctl work
on such systems.
goto fail;
}
- if (!bus->cgroup_root) {
- r = cg_get_root_path(&bus->cgroup_root);
- if (r < 0)
- goto fail;
- }
+ r = bus_get_root_path(bus);
+ if (r < 0)
+ goto fail;
c->cgroup_root = strdup(bus->cgroup_root);
if (!c->cgroup_root) {
int bus_set_address_system_container(sd_bus *b, const char *machine);
int bus_remove_match_by_string(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata);
+
+int bus_get_root_path(sd_bus *bus);
m->creds.cgroup = d->str;
m->creds.mask |= (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID) & bus->creds_mask;
- if (!bus->cgroup_root) {
- r = cg_get_root_path(&bus->cgroup_root);
- if (r < 0)
- goto fail;
- }
+ r = bus_get_root_path(bus);
+ if (r < 0)
+ goto fail;
m->creds.cgroup_root = bus->cgroup_root;
*name = bus->connection_name;
return 0;
}
+
+int bus_get_root_path(sd_bus *bus) {
+ int r;
+
+ if (bus->cgroup_root)
+ return 0;
+
+ r = cg_get_root_path(&bus->cgroup_root);
+ if (r == -ENOENT) {
+ bus->cgroup_root = strdup("/");
+ if (!bus->cgroup_root)
+ return -ENOMEM;
+
+ r = 0;
+ }
+
+ return r;
+}