1 files changed, 39 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/com32/lib/onexit.c b/contrib/syslinux-4.02/com32/lib/onexit.c
new file mode 100644
index 0000000..d409e82
--- /dev/null
+++ b/contrib/syslinux-4.02/com32/lib/onexit.c
@@ -0,0 +1,39 @@
+/*
+ * onexit.c
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include "atexit.h"
+
+extern __noreturn(*__exit_handler) (int);
+static struct atexit *__atexit_list;
+
+static __noreturn on_exit_exit(int rv)
+{
+    struct atexit *ap;
+
+    for (ap = __atexit_list; ap; ap = ap->next) {
+	ap->fctn(rv, ap->arg);	/* This assumes extra args are harmless */
+    }
+
+    _exit(rv);
+}
+
+int on_exit(void (*fctn) (int, void *), void *arg)
+{
+    struct atexit *as = malloc(sizeof(struct atexit));
+
+    if (!as)
+	return -1;
+
+    as->fctn = fctn;
+    as->arg = arg;
+
+    as->next = __atexit_list;
+    __atexit_list = as;
+
+    __exit_handler = on_exit_exit;
+
+    return 0;
+}