From 3a867c9ba4f41dad6c67a1a08792b358f328c54b Mon Sep 17 00:00:00 2001
From: Leah Neukirchen <leah@vuxu.org>
Date: Sun, 21 Jan 2018 16:26:30 +0100
Subject: add -D to generate a process in uninterruptible sleep

---
 fail.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'fail.c')

diff --git a/fail.c b/fail.c
index f586ba8..6e986ee 100644
--- a/fail.c
+++ b/fail.c
@@ -10,6 +10,7 @@
 
 #include <fcntl.h>
 #include <signal.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 
@@ -34,6 +35,15 @@ dlcrash()
 		*nullp = 1337;
 }
 
+void
+uninterruptible()
+{
+	printf("pid %d is now in state D\n", getpid());
+	vfork();
+	pause();
+	exit(1);
+}
+
 // can lockup your machine
 void
 oom()
@@ -122,11 +132,12 @@ main(int argc, char *argv[])
 {
 	int c;
 
-	while ((c = getopt(argc, argv, "123Oacdikrst")) != -1) {
+	while ((c = getopt(argc, argv, "123DOacdikrst")) != -1) {
 		switch (c) {
 		case '1': exit(-1); break;
 		case '2': exit(2); break;
 		case '3': exit(111); break;
+		case 'D': uninterruptible(); break;
 		case 'O': oom(); break;
 		case 'a': abortme(); break;
 		case 'c': violate_seccomp(); break;
-- 
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