add prctl_set_child_subreaper

1 files changed, 6 insertions, 0 deletions

diff --git a/linuxnamespaces/syscalls.py b/linuxnamespaces/syscalls.py
index 368f437..2a35a69 100644
--- a/linuxnamespaces/syscalls.py
+++ b/linuxnamespaces/syscalls.py
@@ -348,6 +348,7 @@ class PrctlOption(enum.IntEnum):
     """This value may be supplied to prctl(2) as option."""
 
     PR_SET_PDEATHSIG = 1
+    PR_SET_CHILD_SUBREAPER = 36
     PR_CAP_AMBIENT = 47
 
 
@@ -668,6 +669,11 @@ def prctl_raise_ambient_capabilities(capabilities: int) -> None:
         )
 
 
+def prctl_set_child_subreaper(enabled: bool = True) -> None:
+    """Enable or disable being a child subreaper."""
+    prctl(PrctlOption.PR_SET_CHILD_SUBREAPER, int(enabled))
+
+
 def prctl_set_pdeathsig(signum: int) -> None:
     """Set the parent-death signal of the calling process."""
     if signum < 0: