Kernel: Send a SIGCHLD to the parent upon suspension of a process

...that is controlling a TTY.
Author: https://github.com/alimpfard Commit: https://github.com/SerenityOS/serenity/commit/05972668d14 Pull-request: https://github.com/SerenityOS/serenity/pull/3020 Reviewed-by: https://github.com/awesomekling
2020-08-06 03:22:06 +04:30 · 2020-08-06 03:22:06 +04:30 · 05972668d1 · 2024-07-19 04:14:11 +09:00
commit 05972668d1
parent b3d1a05261
1 changed files with 4 additions and 1 deletions
--- a/Kernel/TTY/TTY.cpp
+++ b/Kernel/TTY/TTY.cpp
@ -155,6 +155,10 @@ void TTY::emit(u8 ch)
        if (ch == m_termios.c_cc[VSUSP]) {
            dbg() << tty_name() << ": VSUSP pressed!";
            generate_signal(SIGTSTP);
+            if (auto process = Process::from_pid(m_pgid)) {
+                if (auto parent = Process::from_pid(process->ppid()))
+                    (void)parent->send_signal(SIGCHLD, process);
+            }
            return;
        }
    }
@ -390,5 +394,4 @@ void TTY::hang_up()
 {
    generate_signal(SIGHUP);
 }
-
 }