Classify processes from sessions into cgroups

Create a private cgroup tree associated with no controllers, and use it
to map PIDs to sessions.  Since we use our own path structure, remove
internal cgroup-related helpers that interpret the cgroup path structure
to pull out users, slices, and scopes.

1 files changed, 10 insertions, 2 deletions

diff --git a/src/login/logind-user.c b/src/login/logind-user.c
index 84f549479..2ea2067b2 100644
--- a/src/login/logind-user.c
+++ b/src/login/logind-user.c
@@ -579,10 +579,18 @@ UserState user_get_state(User *u) {
 }
 
 int user_kill(User *u, int signo) {
+        Session *s;
+        int res = 0;
+
         assert(u);
 
-        /* FIXME: No way to kill a user without systemd.  */
-        return -ESRCH;
+        LIST_FOREACH(sessions_by_user, s, u->sessions) {
+                int r = session_kill(s, KILL_ALL, signo);
+                if (res == 0 && r < 0)
+                        res = r;
+        }
+
+        return res;
 }
 
 static bool elect_display_filter(Session *s) {