stub for pledge(2) for systems that lack it

openbsd-compat/bsd-pledge.c

@@ -0,0 +1,14 @@
+/* Placed in the public domain.  */
+
+#include "includes.h"
+
+#ifndef HAVE_PLEDGE
+
+/* Stub; real implementations wanted. */
+int
+pledge(const char *promises, const char *paths[])
+{
+	return 0;
+}
+
+#endif /* HAVE_PLEDGE */

openbsd-compat/openbsd-compat.h

@@ -264,6 +264,10 @@ int	bcrypt_pbkdf(const char *, size_t, const u_int8_t *, size_t,
 void explicit_bzero(void *p, size_t n);
 #endif
 
+#ifndef HAVE_PLEDGE
+int pledge(const char *promises, const char *paths[]);
+#endif /* HAVE_PLEDGE */
+
 void *xmmap(size_t size);
 char *xcrypt(const char *password, const char *salt);
 char *shadow_pw(struct passwd *pw);