some extra legacy header stuff

include/ar.h

+#ifndef _AR_H
+#define _AR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ARMAG "!<arch>\n"
+#define SARMAG 8
+#define ARFMAG "`\n"
+
+struct ar_hdr {
+	char ar_name[16];
+	char ar_date[12];
+	char ar_uid[6], ar_gid[6];
+	char ar_mode[8];
+	char ar_size[10];
+	char ar_fmag[2];
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/lastlog.h

+#include <utmp.h>

include/utmp.h

@@ -11,6 +11,12 @@ extern "C" {
 #define UT_NAMESIZE 32
 #define UT_HOSTSIZE 256
 
+struct lastlog {
+	time_t ll_time;
+	char ll_line[UT_LINESIZE];
+	char ll_host[UT_HOSTSIZE];
+};
+
 #define ut_time ut_tv.tv_sec
 #define ut_name ut_user
 #define ut_exit __ut_exit