diff --git a/utils/init.cpp b/utils/init.cpp
index 6595766f..aa414ffc 100644
--- a/utils/init.cpp
+++ b/utils/init.cpp
@@ -34,6 +34,11 @@
 
 int child()
 {
+	pid_t init_pid = getppid();
+	char init_pid_str[sizeof(pid_t)*3];
+	snprintf(init_pid_str, sizeof(pid_t)*3, "%ju", (uintmax_t) init_pid);
+	setenv("INIT_PID", init_pid_str, 1);
+
 	const char* programname = "sh";
 	const char* newargv[] = { programname, NULL };