big <utmp.h>-inspired netbsd switch

import/switch of:
init, getty, reboot, halt, shutdown, wall, last

changes:
	. change reboot() call to netbsd prototype and args
	. allows pristine <utmp.h>
	. use clean <sys/reboot.h> instead of <minix/reboot.h>
	. implement TIOCSCTTY for use by getty so getty can get
	  controlling terminal from init's child(ren)
	. allow NULL envp for exec

Change-Id: I5ca02cb4230857140c08794bbfeba7df982c58a3

include/minix/Makefile

@@ -16,7 +16,7 @@ INCS+=	acpi.h audio_fw.h bitmap.h \
 	keymap.h log.h mmio.h mount.h mthread.h minlib.h \
 	netdriver.h optset.h padconf.h partition.h portio.h \
 	priv.h procfs.h profile.h queryparam.h \
-	reboot.h rs.h safecopies.h sched.h sef.h sffs.h \
+	rs.h safecopies.h sched.h sef.h sffs.h \
 	sound.h spin.h sys_config.h sysinfo.h \
 	syslib.h sysutil.h termios.h timers.h type.h \
 	u64.h usb.h usb_ch9.h vbox.h \

include/minix/reboot.h

@@ -1,15 +0,0 @@
-#ifndef _MINIX_REBOOT_H
-#define _MINIX_REBOOT_H
-
-/* How to exit the system. */
-#define RBT_HALT	   0	/* shut down the system */
-#define RBT_REBOOT	   1	/* reboot the system */
-#define RBT_PANIC	   2	/* the system panics */
-#define RBT_POWEROFF       3    /* power off, reset if not possible */
-#define RBT_RESET	   4	/* hard reset the system */
-#define RBT_DEFAULT	   5	/* perform the default action du jour */
-#define RBT_INVALID	   6	/* first invalid reboot flag */
-
-int reboot(int);
-
-#endif /* _MINIX_REBOOT_H */

include/minix/termios.h

@@ -152,6 +152,12 @@ int tcsetattr(int _filedes, int _opt_actions, const struct termios
 #define VLNEXT            12    /* cc_c[VLNEXT] (^V) */
 #define VDISCARD          13    /* cc_c[VDISCARD] (^O) */
 
+/* Non-functional additions */
+#define VDSUSP		14
+#define VWERASE		15
+#define VSTATUS		16
+#define VEOL2		17
+
 /* Extensions to baud rate settings. */
 #if defined(__minix) && defined(_NETBSD_SOURCE)
 #define B57600		0x0100	/* 57600 baud */

include/sys/ioc_tty.h

@@ -22,6 +22,7 @@
 #define	TIOCSWINSZ	_IOW('T', 17, struct winsize)
 #define	TIOCGPGRP	_IOW('T', 18, int)
 #define	TIOCSPGRP	_IOW('T', 19, int)
+#define TIOCSCTTY	_IO ('T', 20)		      /* controlling tty */
 #define TIOCSFON	_IOW_BIG(1, u8_t [8192])
 
 /* Keyboard ioctls. */

include/unistd.h

@@ -376,8 +376,8 @@ int	 profil(char *, size_t, u_long, u_int);
 void	 psignal(int, const char *);
 #endif /* __PSIGNAL_DECLARED */
 int	 rcmd(char **, int, const char *, const char *, const char *, int *);
-#ifndef __minix
 int	 reboot(int, char *);
+#ifndef __minix
 int	 revoke(const char *);
 #endif
 int	 rresvport(int *);

include/utmp.h

@@ -39,26 +39,12 @@
 #ifndef	_UTMP_H_
 #define	_UTMP_H_
 
-#ifdef __minix
-#define _PATH_UTMP	"/etc/utmp"
-#define _PATH_WTMP	"/usr/adm/wtmp"
-#define _PATH_BTMP	"/usr/adm/btmp"
-#define _PATH_LASTLOG	"/usr/adm/lastlog"
-#define UTMP		_PATH_UTMP
-#define WTMP		_PATH_WTMP
-#define BTMP		_PATH_BTMP
-#else
 #define	_PATH_UTMP	"/var/run/utmp"
 #define	_PATH_WTMP	"/var/log/wtmp"
 #define	_PATH_LASTLOG	"/var/log/lastlog"
-#endif
 
 #define	UT_NAMESIZE	8
-#ifdef __minix
-#define UT_LINESIZE	12
-#else
 #define	UT_LINESIZE	8
-#endif
 #define	UT_HOSTSIZE	16
 
 struct lastlog {
@@ -67,34 +53,12 @@ struct lastlog {
 	char	ll_host[UT_HOSTSIZE];
 };
 
-#ifdef __minix
-struct utmp {
-  char ut_name[UT_NAMESIZE];		/* user name */
-  char ut_id[4];		/* /etc/inittab ID */
-  char ut_line[UT_LINESIZE];		/* terminal name */
-  char ut_host[UT_HOSTSIZE];		/* host name, when remote */
-  short ut_pid;			/* process id */
-  short int ut_type;		/* type of entry */
-  time_t ut_time;			/* login/logout time */
-};
-
-/* Definitions for ut_type. */
-#define RUN_LVL            1	/* this is a RUN_LEVEL record */
-#define BOOT_TIME          2	/* this is a REBOOT record */
-#define INIT_PROCESS       5	/* this process was spawned by INIT */
-#define LOGIN_PROCESS      6	/* this is a 'getty' process waiting */
-#define USER_PROCESS       7	/* any other user process */
-#define DEAD_PROCESS       8	/* this process has died (wtmp only) */
-
-#else /* !__minix */
-
 struct utmp {
 	char	ut_line[UT_LINESIZE];
 	char	ut_name[UT_NAMESIZE];
 	char	ut_host[UT_HOSTSIZE];
 	time_t	ut_time;
 };
-#endif /* __minix */
 
 __BEGIN_DECLS
 int utmpname(const char *);