From 4fa9e048c2af26beb7dc2ee9479ff3323e92a7b5 Mon Sep 17 00:00:00 2001 From: Darren Tucker Date: Fri, 8 May 2020 21:50:43 +1000 Subject: Ensure SA_SIGNAL test only signals itself. When the test's child signals its parent and it exits the result of getppid changes. On Ubuntu 20.04 this results in the ppid being that of the GDM session, causing it to exit. Analysis and testing from pedro at ambientworks.net --- configure.ac | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/configure.ac b/configure.ac index 3712d55d..003b235e 100644 --- a/configure.ac +++ b/configure.ac @@ -2534,10 +2534,12 @@ static void sighandler(int sig) { } sa.sa_flags = SA_RESTART; (void)sigaction(SIGTERM, &sa, NULL); if ((pid = fork()) == 0) { /* child */ + pid = getppid(); sleep(1); - kill(getppid(), SIGTERM); + kill(pid, SIGTERM); sleep(1); - kill(getppid(), SIGKILL); + if (getppid() == pid) /* if parent did not exit, shoot it */ + kill(pid, SIGKILL); exit(0); } else { /* parent */ r = select(0, NULL, NULL, NULL, NULL); -- cgit v1.2.3