install signal handlers early & handle SIGTERM

1 files changed, 6 insertions, 0 deletions

diff --git a/src/transport/mycelium.rs b/src/transport/mycelium.rs
index c2d0181..7d88d73 100644
--- a/src/transport/mycelium.rs
+++ b/src/transport/mycelium.rs
@@ -279,6 +279,12 @@ impl SupervisedMycelium {
                 for &fd in &fds_to_inherit {
                     libc::fcntl(fd, libc::F_SETFD, 0);
                 }
+                // Own process group: a Ctrl-C in the terminal goes to continuum only,
+                // which then stops Mycelium itself, instead of both exiting at once (which
+                // shows up as "Mycelium runtime process exited").
+                if libc::setpgid(0, 0) != 0 {
+                    return Err(std::io::Error::last_os_error());
+                }
                 #[cfg(target_os = "linux")]
                 {
                     if libc::prctl(libc::PR_SET_PDEATHSIG, libc::SIGTERM) != 0 {