2 files changed, 15 insertions, 0 deletions

diff --git a/include/linux/prctl.h b/include/linux/prctl.h
index a0413ac3abe8..e0cfec2490aa 100644
--- a/include/linux/prctl.h
+++ b/include/linux/prctl.h
@@ -121,4 +121,7 @@
 #define PR_SET_PTRACER 0x59616d61
 # define PR_SET_PTRACER_ANY ((unsigned long)-1)
 
+#define PR_SET_CHILD_SUBREAPER 36
+#define PR_GET_CHILD_SUBREAPER 37
+
 #endif /* _LINUX_PRCTL_H */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 0c147a4260a5..0c3854b0d4b1 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -553,6 +553,18 @@ struct signal_struct {
         int                     group_stop_count;
         unsigned int            flags; /* see SIGNAL_* flags below */
 
+        /*
+         * PR_SET_CHILD_SUBREAPER marks a process, like a service
+         * manager, to re-parent orphan (double-forking) child processes
+         * to this process instead of 'init'. The service manager is
+         * able to receive SIGCHLD signals and is able to investigate
+         * the process until it calls wait(). All children of this
+         * process will inherit a flag if they should look for a
+         * child_subreaper process at exit.
+         */
+        unsigned int            is_child_subreaper:1;
+        unsigned int            has_child_subreaper:1;
+
         /* POSIX.1b Interval Timers */
         struct list_head posix_timers;