Bring back LX zones.

@@ -110,10 +110,22 @@
                 }
         }
         return (pidp);
 }
 
+struct pid *
+pid_find(pid_t pid)
+{
+        struct pid *pidp;
+
+        mutex_enter(&pidlinklock);
+        pidp = pid_lookup(pid);
+        mutex_exit(&pidlinklock);
+
+        return (pidp);
+}
+
 void
 pid_setmin(void)
 {
         if (jump_pid && jump_pid > mpid)
                 minpid = mpid = jump_pid;