Various stubs while trying to get an old coreutils to build.

LibC/utmp.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+struct exit_status {              /* Type for ut_exit, below */
+    short int e_termination;      /* Process termination status */
+    short int e_exit;             /* Process exit status */
+};
+
+#define UT_NAMESIZE 32
+#define UT_LINESIZE 32
+#define UT_HOSTSIZE 256
+
+struct utmp {
+    short   ut_type;              /* Type of record */
+    pid_t   ut_pid;               /* PID of login process */
+    char    ut_line[UT_LINESIZE]; /* Device name of tty - "/dev/" */
+    char    ut_id[4];             /* Terminal name suffix,
+                                     or inittab(5) ID */
+    char    ut_user[UT_NAMESIZE]; /* Username */
+    char    ut_host[UT_HOSTSIZE]; /* Hostname for remote login, or
+                                     kernel version for run-level
+                                     messages */
+    struct  exit_status ut_exit;  /* Exit status of a process
+                                     marked as DEAD_PROCESS; not
+                                     used by Linux init (1 */
+
+     long   ut_session;           /* Session ID */
+     struct timeval ut_tv;        /* Time entry was made */
+
+    int32_t ut_addr_v6[4];        /* Internet address of remote
+                                     host; IPv4 address uses
+                                     just ut_addr_v6[0] */
+
+    char __unused[20];            /* Reserved for future use */
+};
+
+__END_DECLS