task: signal the parent SIGCHLD when child dies (checkmate)

Signed-off-by: Andy-Python-Programmer <[email protected]>

Author: Andy-Python-Programmer

patches/mlibc/mlibc.patch

@@ -1,4 +1,4 @@
-From 4b435231bee99fa0da6f9498c5342488e02a7bbd Mon Sep 17 00:00:00 2001
+From c7e816f64f5dc357cfd6399413ac38098de6234a Mon Sep 17 00:00:00 2001
 From: Andy-Python-Programmer <[email protected]>
 Date: Thu, 10 Feb 2022 19:12:25 +1100
 Subject: [PATCH] yes

src/aero_kernel/src/userland/task.rs

@@ -516,8 +516,9 @@ impl Task {
             parent.remove_child(self);
             parent.zombies.add_zombie(self.this());
 
-            // TODO: If the parent process is the process leader then
-            // signal SIGCHLD to the parent process.
+            if self.is_process_leader() {
+                parent.signal(aero_syscall::signal::SIGCHLD);
+            }
         }
     }
 }