[BusyBox] rx, setterm patch

Christopher Hoover ch at murgatroid.com
Sat Oct 4 00:22:24 UTC 2003


Here's a patch against the current cvs head that adds rx (xmodem and
xmodem-1k only) and setterm support to busybox.  rx is particularly
useful for embedded targets, as a serial line is often the only thing
available.

The rx code is based on code I wrote from scratch for blob, the ARM
bootloader.

The setterm code is based on the standard linux-utils code.

Please apply.

-ch

mailto:ch(at)murgatroid.com
mailto:ch(at)hpl.hp.com



diff -X dontdiff -Naurp busybox.pristine/coreutils/Config.in busybox/coreutils/Config.in
--- busybox.pristine/coreutils/Config.in	2003-09-23 20:22:54.000000000 -0700
+++ busybox/coreutils/Config.in	2003-10-03 16:23:30.000000000 -0700
@@ -361,6 +361,12 @@ config CONFIG_RM
 	help
 	  rm is used to remove files or directories.
 
+config CONFIG_RX
+	bool "rx"
+	default n
+	help
+	  Receive files using the Xmodem protocol.
+
 config CONFIG_RMDIR
 	bool "rmdir"
 	default n
diff -X dontdiff -Naurp busybox.pristine/coreutils/Makefile.in busybox/coreutils/Makefile.in
--- busybox.pristine/coreutils/Makefile.in	2003-09-23 20:22:54.000000000 -0700
+++ busybox/coreutils/Makefile.in	2003-10-03 16:23:31.000000000 -0700
@@ -63,6 +63,7 @@ COREUTILS-$(CONFIG_PWD)		+= pwd.o
 COREUTILS-$(CONFIG_REALPATH)		+= realpath.o
 COREUTILS-$(CONFIG_RM)		+= rm.o
 COREUTILS-$(CONFIG_RMDIR)	+= rmdir.o
+COREUTILS-$(CONFIG_RX)		+= rx.o
 COREUTILS-$(CONFIG_SHA1SUM)	+= sha1sum.o
 COREUTILS-$(CONFIG_SLEEP)		+= sleep.o
 COREUTILS-$(CONFIG_SORT)	+= sort.o
diff -X dontdiff -Naurp busybox.pristine/coreutils/rx.c busybox/coreutils/rx.c
--- busybox.pristine/coreutils/rx.c	1969-12-31 16:00:00.000000000 -0800
+++ busybox/coreutils/rx.c	2003-10-03 16:19:24.000000000 -0700
@@ -0,0 +1,380 @@
+/*-------------------------------------------------------------------------
+ * Filename:      xmodem.c
+ * Version:       $Id$
+ * Copyright:     Copyright (C) 2001, Hewlett-Packard Company
+ * Author:        Christopher Hoover <ch at hpl.hp.com>
+ * Description:   xmodem functionality for uploading of kernels 
+ *                and the like
+ * Created at:    Thu Dec 20 01:58:08 PST 2001
+ *-----------------------------------------------------------------------*/
+/*
+ * xmodem.c: xmodem functionality for uploading of kernels and 
+ *            the like
+ *
+ * Copyright (C) 2001 Hewlett-Packard Laboratories
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *
+ * This was originally written for blob and then adapted for busybox.
+ *
+ */
+
+#ifndef MAIN
+#include "busybox.h"
+#endif
+
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <termios.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#define SOH 0x01
+#define STX 0x02
+#define EOT 0x04
+#define ACK 0x06
+#define NAK 0x15
+#define CAN 0x18
+#define BS  0x08
+
+/*
+
+Cf:
+
+  http://www.textfiles.com/apple/xmodem
+  http://www.phys.washington.edu/~belonis/xmodem/docxmodem.txt
+  http://www.phys.washington.edu/~belonis/xmodem/docymodem.txt
+  http://www.phys.washington.edu/~belonis/xmodem/modmprot.col
+
+*/
+
+#define TIMEOUT 1
+#define TIMEOUT_LONG 10
+#define MAXERRORS 10
+
+static char error_buf[256];
+
+static void error(char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	vsnprintf(error_buf, sizeof(error_buf), fmt, ap);
+	va_end(ap);
+}
+
+static inline void write_byte(int fd, char cc) { 
+	write(fd, &cc, 1);
+}
+
+static inline void write_flush(int fd) {
+	tcdrain(fd);
+}
+
+static inline void read_flush(int fd) {
+	tcflush(fd, TCIFLUSH);
+}
+  
+static int read_byte(int fd, unsigned int timeout) {
+	char buf[1];
+	int n;
+
+	alarm(timeout);
+
+	n = read(fd, &buf, 1);
+
+	alarm(0);
+
+	if (n == 1)
+		return buf[0] & 0xff;
+	else
+		return -1;
+}
+
+static int write_fully(int fd, const void *buf, size_t n)
+{
+	const char *p = (const char *) buf;
+	size_t remaining = n;
+
+	while (remaining > 0) {
+		ssize_t written = write(fd, p, remaining);
+		if (written < 0) {
+			if (errno == EINTR)
+				continue;
+			return -1;
+		}
+		
+		remaining -= written;
+		p += written;
+	}
+
+	return 0;
+}
+
+static int receive(int ttyfd, int filefd)
+{
+	char blockBuf[1024];
+	unsigned int errors = 0;
+	unsigned int wantBlockNo = 1;
+	unsigned int length = 0;
+	int docrc = 1;
+	char nak = 'C';
+	unsigned int timeout = TIMEOUT_LONG;
+
+	read_flush(ttyfd);
+
+	/* Ask for CRC; if we get errors, we will go with checksum */
+	write_byte(ttyfd, nak);
+	write_flush(ttyfd);
+
+	for (;;) {
+		int blockBegin;
+		int blockNo, blockNoOnesCompl;
+		int blockLength;
+		int cksum = 0;
+		int crcHi = 0;
+		int crcLo = 0;
+
+		blockBegin = read_byte(ttyfd, timeout);
+		if (blockBegin < 0)
+			goto timeout;
+
+		timeout = TIMEOUT;
+		nak = NAK;
+
+		switch (blockBegin) {
+		case SOH:
+		case STX:
+			break;
+
+		case EOT:
+			write_byte(ttyfd, ACK);
+			write_flush(ttyfd);
+			goto done;
+
+		default:
+			goto error;
+		}
+
+		/* block no */
+		blockNo = read_byte(ttyfd, TIMEOUT);
+		if (blockNo < 0)
+			goto timeout;
+
+		/* block no one's compliment */
+		blockNoOnesCompl = read_byte(ttyfd, TIMEOUT);
+		if (blockNoOnesCompl < 0)
+			goto timeout;
+
+		if (blockNo != (255 - blockNoOnesCompl)) {
+			error("bad block ones compl");
+			goto error;
+		}
+
+		blockLength = (blockBegin == SOH) ? 128 : 1024;
+
+		{
+			int i;
+
+			for (i = 0; i < blockLength; i++) {
+				int cc = read_byte(ttyfd, TIMEOUT);
+				if (cc < 0)
+					goto timeout;
+				blockBuf[i] = cc;
+			}
+		}
+
+		if (docrc) {
+			crcHi = read_byte(ttyfd, TIMEOUT);
+			if (crcHi < 0)
+				goto timeout;
+
+			crcLo = read_byte(ttyfd, TIMEOUT);
+			if (crcLo < 0)
+				goto timeout;
+		} else {
+			cksum = read_byte(ttyfd, TIMEOUT);
+			if (cksum < 0)
+				goto timeout;
+		}
+
+		if (blockNo == ((wantBlockNo - 1) & 0xff)) {
+			/* a repeat of the last block is ok, just ignore it. */
+			/* this also ignores the initial block 0 which is */
+			/* meta data. */
+			goto next;
+		} else if (blockNo != (wantBlockNo & 0xff)) {
+			error("unexpected block no, 0x%08x, expecting 0x%08x", blockNo, wantBlockNo);
+			goto error;
+		}
+
+		if (docrc) {
+			int crc = 0;
+			int i, j;
+			int expectedCrcHi;
+			int expectedCrcLo;
+
+			for (i = 0; i < blockLength; i++) {
+				crc = crc ^ (int) blockBuf[i] << 8;
+				for (j = 0; j < 8; j++)
+					if (crc & 0x8000)
+						crc = crc << 1 ^ 0x1021;
+					else
+						crc = crc << 1;
+			}
+
+			expectedCrcHi = (crc >> 8) & 0xff;
+			expectedCrcLo = crc & 0xff;
+
+			if ((crcHi != expectedCrcHi) ||
+			    (crcLo != expectedCrcLo)) {
+				error("crc error, expected 0x%02x 0x%02x, got 0x%02x 0x%02x", expectedCrcHi, expectedCrcLo, crcHi, crcLo);
+				goto error;
+			}
+		} else {
+			unsigned char expectedCksum = 0;
+			int i;
+
+			for (i = 0; i < blockLength; i++)
+				expectedCksum += blockBuf[i];
+
+			if (cksum != expectedCksum) {
+				error("checksum error, expected 0x%02x, got 0x%02x", expectedCksum, cksum);
+				goto error;
+			}
+		}
+
+		wantBlockNo++;
+		length += blockLength;
+
+		if (write_fully(filefd, blockBuf, blockLength) < 0) {
+			error("write to file failed: %m");
+			goto fatal;
+		}
+
+	next:
+		errors = 0;
+		write_byte(ttyfd, ACK);
+		write_flush(ttyfd);
+		continue;
+
+	error:
+	timeout:
+		errors++;
+		if (errors == MAXERRORS) {
+			/* Abort */
+			int i;
+
+			// if using crc, try again w/o crc
+			if (nak == 'C') {
+				nak = NAK;
+				errors = 0;
+				docrc = 0;
+				goto timeout;
+			}
+
+			error("too many errors; giving up");
+
+		fatal:
+			for (i = 0; i < 5; i ++)
+				write_byte(ttyfd, CAN);
+			for (i = 0; i < 5; i ++)
+				write_byte(ttyfd, BS);
+			write_flush(ttyfd);
+			return -1;
+		}
+
+		read_flush(ttyfd);
+		write_byte(ttyfd, nak);
+		write_flush(ttyfd);
+	}
+
+ done:
+	return length;
+}
+
+static void sigalrm_handler(int signum)
+{
+}
+
+int rx_main(int argc, char **argv)
+{
+	char *fn;
+	int ttyfd, filefd;
+	struct termios tty, orig_tty;
+	struct sigaction act;
+	int n;
+
+	if (argc != 2) {
+		fprintf(stderr, "usage: %s file\n", argv[0]);
+		return EXIT_FAILURE;
+	}
+
+	fn = argv[1];
+
+	ttyfd = open("/dev/tty", O_RDWR);
+	if (ttyfd < 0) {
+		fprintf(stderr, "%s: open on /dev/tty failed: %m\n",
+			argv[0]);
+		return EXIT_FAILURE;
+	}
+
+	filefd = open(fn, O_RDWR|O_CREAT|O_TRUNC, 0666);
+	if (filefd < 0) {
+		fprintf(stderr, "%s: open on %s failed: %m\n",
+			argv[0], fn);
+		return EXIT_FAILURE;
+	}
+		
+
+	if (tcgetattr(ttyfd, &tty) < 0) {
+		fprintf(stderr, "%s: tcgetattr failed: %m\n",
+			argv[0]);
+		return EXIT_FAILURE;
+	}
+	
+	orig_tty = tty;
+
+	cfmakeraw(&tty);
+	tcsetattr(ttyfd, TCSAFLUSH, &tty);
+	
+	memset(&act, 0, sizeof(act));
+	act.sa_handler = sigalrm_handler;
+	sigaction(SIGALRM, &act, 0);
+
+	n = receive(ttyfd, filefd);
+
+	close(filefd);
+
+	tcsetattr(ttyfd, TCSAFLUSH, &orig_tty);
+
+	if (n < 0) {
+		fprintf(stderr, "\n\n%s: receive failed: %s\n",
+			argv[0], error_buf);
+		return EXIT_FAILURE;
+	}
+
+	return EXIT_SUCCESS;
+}
+
+#ifdef MAIN
+int main(int argc, char **argv) { return rx_main(argc, argv); }
+#endif
diff -X dontdiff -Naurp busybox.pristine/include/applets.h busybox/include/applets.h
--- busybox.pristine/include/applets.h	2003-09-23 20:22:55.000000000 -0700
+++ busybox/include/applets.h	2003-10-03 16:23:33.000000000 -0700
@@ -499,12 +499,18 @@
 #ifdef CONFIG_RUN_PARTS
 	APPLET_ODDNAME("run-parts", run_parts_main, _BB_DIR_BIN, _BB_SUID_NEVER, run_parts)
 #endif	
+#ifdef CONFIG_RX
+	APPLET(rx, rx_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
+#endif
 #ifdef CONFIG_SED
 	APPLET(sed, sed_main, _BB_DIR_BIN, _BB_SUID_NEVER)
 #endif
 #ifdef CONFIG_SETKEYCODES
 	APPLET(setkeycodes, setkeycodes_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
 #endif
+#ifdef CONFIG_SETTERM
+	APPLET_NOUSAGE("setterm", setterm_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
+#endif
 #if defined(CONFIG_FEATURE_SH_IS_ASH) && defined(CONFIG_ASH)
 	APPLET_NOUSAGE("sh", ash_main, _BB_DIR_BIN, _BB_SUID_NEVER)
 #elif defined(CONFIG_FEATURE_SH_IS_HUSH) && defined(CONFIG_HUSH)
diff -X dontdiff -Naurp busybox.pristine/include/usage.h busybox/include/usage.h
--- busybox.pristine/include/usage.h	2003-09-23 20:22:55.000000000 -0700
+++ busybox/include/usage.h	2003-10-03 16:23:34.000000000 -0700
@@ -2046,6 +2046,13 @@
 	"\t-a ARG\tPass ARG as an argument for every program invoked.\n" \
 	"\t-u MASK\tSet the umask to MASK before executing every program."
 
+#define rx_trivial_usage \
+	"FILE"
+#define rx_full_usage \
+	"Receive a file using the xmodem protocol."
+#define rx_example_usage \
+	"$ rx /tmp/foo\n"
+
 #define sed_trivial_usage \
 	"[-nef] pattern [files...]"
 #define sed_full_usage \
diff -X dontdiff -Naurp busybox.pristine/util-linux/Config.in busybox/util-linux/Config.in
--- busybox.pristine/util-linux/Config.in	2003-08-06 02:07:36.000000000 -0700
+++ busybox/util-linux/Config.in	2003-10-03 16:19:33.000000000 -0700
@@ -273,6 +273,13 @@ config CONFIG_RDATE
 	  the RFC868 protocol, which is built into the inetd daemon on most
 	  systems.
 
+config CONFIG_SETTERM
+	bool "setterm"
+	default n
+	help
+	  The setterm utility allows you to invoke specified terminal
+	  capabilities on the Linux console.
+
 config CONFIG_SWAPONOFF
 	bool "swaponoff"
 	default n
diff -X dontdiff -Naurp busybox.pristine/util-linux/Makefile.in busybox/util-linux/Makefile.in
--- busybox.pristine/util-linux/Makefile.in	2003-07-14 14:21:07.000000000 -0700
+++ busybox/util-linux/Makefile.in	2003-10-03 16:19:33.000000000 -0700
@@ -41,6 +41,7 @@ UTILLINUX-$(CONFIG_MOUNT)		+= mount.o
 UTILLINUX-$(CONFIG_NFSMOUNT)		+= nfsmount.o
 UTILLINUX-$(CONFIG_PIVOT_ROOT)	+= pivot_root.o
 UTILLINUX-$(CONFIG_RDATE)		+= rdate.o
+UTILLINUX-$(CONFIG_SETTERM)		+= setterm.o
 UTILLINUX-$(CONFIG_SWAPONOFF)		+= swaponoff.o
 UTILLINUX-$(CONFIG_UMOUNT)		+= umount.o
 
diff -X dontdiff -Naurp busybox.pristine/util-linux/setterm.c busybox/util-linux/setterm.c
--- busybox.pristine/util-linux/setterm.c	1969-12-31 16:00:00.000000000 -0800
+++ busybox/util-linux/setterm.c	2003-10-03 16:19:33.000000000 -0700
@@ -0,0 +1,1398 @@
+/* setterm.c, set terminal attributes.
+ *
+ * Copyright (C) 1990 Gordon Irlam (gordoni at cs.ua.oz.au).  Conditions of use,
+ * modification, and redistribution are contained in the file COPYRIGHT that
+ * forms part of this distribution.
+ * 
+ * Adaption to Linux by Peter MacDonald.
+ *
+ * Enhancements by Mika Liljeberg (liljeber at cs.Helsinki.FI)
+ *
+ * Beep modifications by Christophe Jolif (cjolif at storm.gatelink.fr.net)
+ *
+ * Sanity increases by Cafeine Addict [sic].
+ *
+ * Powersave features by todd j. derr <tjd at wordsmith.org>
+ *
+ * Converted to terminfo by Kars de Jong (jongk at cs.utwente.nl)
+ *
+ * 1999-02-22 Arkadiusz Mi¶kiewicz <misiek at pld.ORG.PL>
+ * - added Native Language Support
+ *
+ *
+ * Syntax:
+ *
+ * setterm
+ *   [ -term terminal_name ]
+ *   [ -reset ]
+ *   [ -initialize ]
+ *   [ -cursor [on|off] ]
+ *   [ -repeat [on|off] ]
+ *   [ -appcursorkeys [on|off] ]
+ *   [ -linewrap [on|off] ]
+ *   [ -snow [on|off] ]
+ *   [ -softscroll [on|off] ]
+ *   [ -defaults ]
+ *   [ -foreground black|red|green|yellow|blue|magenta|cyan|white|default ]
+ *   [ -background black|red|green|yellow|blue|magenta|cyan|white|default ]
+ *   [ -ulcolor black|grey|red|green|yellow|blue|magenta|cyan|white ]
+ *   [ -ulcolor bright red|green|yellow|blue|magenta|cyan|white ]
+ *   [ -hbcolor black|grey|red|green|yellow|blue|magenta|cyan|white ]
+ *   [ -hbcolor bright red|green|yellow|blue|magenta|cyan|white ]
+ *   [ -inversescreen [on|off] ]
+ *   [ -bold [on|off] ]
+ *   [ -half-bright [on|off] ]
+ *   [ -blink [on|off] ]
+ *   [ -reverse [on|off] ]
+ *   [ -underline [on|off] ]
+ *   [ -store ]
+ *   [ -clear [ all|rest ] ]
+ *   [ -tabs [tab1 tab2 tab3 ... ] ]     (tabn = 1-160)
+ *   [ -clrtabs [ tab1 tab2 tab3 ... ]   (tabn = 1-160)
+ *   [ -regtabs [1-160] ]
+ *   [ -blank [0-60] ]
+ *   [ -dump   [1-NR_CONS ] ]
+ *   [ -append [1-NR_CONS ] ]
+ *   [ -file dumpfilename ]
+ *   [ -standout [attr] ]
+ *   [ -msg [on|off] ]
+ *   [ -msglevel [0-8] ]
+ *   [ -powersave [on|vsync|hsync|powerdown|off] ]
+ *   [ -powerdown [0-60] ]
+ *   [ -blength [0-2000] ]
+ *   [ -bfreq freq ]
+ *
+ *
+ * Semantics:
+ *
+ * Setterm writes to standard output a character string that will
+ * invoke the specified terminal capabilities.  Where possibile
+ * terminfo is consulted to find the string to use.  Some options
+ * however do not correspond to a terminfo capability.  In this case if
+ * the terminal type is "con*", or "linux*" the string that invokes
+ * the specified capabilities on the PC Linux virtual console driver
+ * is output.  Options that are not implemented by the terminal are
+ * ignored.
+ *
+ * The following options are non-obvious.
+ *
+ *   -term can be used to override the TERM environment variable.
+ *
+ *   -reset displays the terminal reset string, which typically resets the
+ *      terminal to its power on state.
+ *
+ *   -initialize displays the terminal initialization string, which typically
+ *      sets the terminal's rendering options, and other attributes to the
+ *      default values.
+ *
+ *   -default sets the terminal's rendering options to the default values.
+ *
+ *   -store stores the terminal's current rendering options as the default
+ *      values.  */
+
+#define BUSYBOX
+
+#ifdef BUSYBOX
+/* for busybox ... */
+#  include "busybox.h"
+
+#  define DIET_SETTERM
+
+#  ifndef CONFIG_FEATURE_VERBOSE_USAGE
+#    define NO_USAGE
+#  endif
+
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <termios.h>
+#include <string.h>
+#include <fcntl.h>
+#ifndef DIET_SETTERM
+#  ifndef NCURSES_CONST
+#    define NCURSES_CONST const	/* define before including term.h */
+#  endif
+#  include <term.h>
+#  if NCH
+#    include <ncurses.h>
+#  else
+#    include <curses.h>
+#  endif
+#endif
+#include <sys/param.h>		/* for MAXPATHLEN */
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#ifndef DIET_SETTERM
+#include "nls.h"
+#else
+#define _(X) X
+#endif
+
+#ifndef TCGETS
+/* TCGETS is either defined in termios.h, or here: */
+#include <asm/ioctls.h>
+#endif
+
+#if __GNU_LIBRARY__ < 5
+#ifndef __alpha__
+# include <linux/unistd.h>
+#define __NR_klogctl __NR_syslog
+_syscall3(int, klogctl, int, type, char*, buf, int, len);
+#else /* __alpha__ */
+#define klogctl syslog
+#endif
+#endif
+extern int klogctl(int type, char *buf, int len);
+
+/* Constants. */
+
+/* General constants. */
+#ifndef TRUE
+#define TRUE  1
+#define FALSE 0
+#endif
+
+/* Keyboard types. */
+#define PC	 0
+#define OLIVETTI 1
+#define DUTCH    2
+#define EXTENDED 3
+
+/* Colors. */
+#define BLACK   0
+#define RED     1
+#define GREEN   2
+#define YELLOW  3
+#define BLUE    4
+#define MAGENTA 5
+#define CYAN    6
+#define WHITE   7
+#define GREY	8
+#define DEFAULT 9
+
+/* Control sequences. */
+#define ESC "\033"
+#define DCS "\033P"
+#define ST  "\033\\"
+
+/* Static variables. */
+
+/* Option flags.  Set if the option is to be invoked. */
+static int opt_term, opt_reset, opt_initialize, opt_cursor;
+static int opt_linewrap;
+#if 0
+static int opt_snow, opt_softscroll;
+#endif
+static int opt_default, opt_foreground;
+static int opt_background, opt_bold, opt_blink, opt_reverse, opt_underline;
+static int opt_store, opt_clear, opt_blank;
+#ifndef DIET_SETTERM
+static int opt_snap, opt_snapfile, opt_append;
+#endif
+#if 0
+static int opt_standout;
+#endif
+static int opt_ulcolor, opt_hbcolor, opt_halfbright, opt_repeat;
+#ifndef DIET_SETTERM
+static int opt_tabs, opt_clrtabs, opt_regtabs;
+#endif
+static int opt_appcursorkeys, opt_inversescreen;
+static int opt_msg, opt_msglevel, opt_powersave, opt_powerdown;
+static int opt_blength, opt_bfreq;
+
+/* Option controls.  The variable names have been contracted to ensure
+ * uniqueness.
+ */
+static char *opt_te_terminal_name;	/* Terminal name. */
+static int opt_cu_on, opt_li_on;
+#if 0
+static int opt_sn_on, opt_so_on;
+#endif
+static int opt_bo_on, opt_hb_on, opt_bl_on;
+static int opt_re_on, opt_un_on, opt_rep_on, opt_appck_on, opt_invsc_on;
+static int opt_msg_on;			/* Boolean switches. */
+static int opt_fo_color, opt_ba_color;	/* Colors. */
+static int opt_ul_color, opt_hb_color;
+static int opt_cl_all;			/* Clear all or rest. */
+static int opt_bl_min;			/* Blank screen. */
+static int opt_blength_l;
+static int opt_bfreq_f;
+#ifndef DIET_SETTERM
+static int opt_sn_num;			/* Snap screen. */
+static int opt_st_attr;
+#endif
+#ifndef DIET_SETTERM
+static int opt_rt_len;			/* regular tab length */
+static int opt_tb_array[161];		/* Array for tab list */
+#endif
+static int opt_msglevel_num;
+static int opt_ps_mode, opt_pd_min;	/* powersave mode/powerdown time */
+
+#ifndef DIET_SETTERM
+static char opt_sn_name[200] = "screen.dump";
+
+static void screendump(int vcnum, FILE *F);
+#endif
+
+/* Command line parsing routines.
+ *
+ * Note that it is an error for a given option to be invoked more than once.
+ */
+
+static void
+parse_term(int argc, char **argv, int *option, char **opt_termx, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Term flag to set. */
+	/* opt_term: Terminal name to set. */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse a -term specification. */
+
+	if (argc != 1 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if (argc == 1)
+		*opt_termx = argv[0];
+}
+
+static void
+parse_none(int argc, char **argv, int *option, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Term flag to set. */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse a parameterless specification. */
+
+	if (argc != 0 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+}
+
+static void
+parse_switch(int argc, char **argv, int *option, int *opt_on, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Option flag to set. */
+	/* opt_on: Boolean option switch to set or reset. */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse a boolean (on/off) specification. */
+
+	if (argc > 1 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if (argc == 1) {
+		if (strcmp(argv[0], "on") == 0)
+			*opt_on = TRUE;
+		else if (strcmp(argv[0], "off") == 0)
+			*opt_on = FALSE;
+		else
+			*bad_arg = TRUE;
+	} else {
+		*opt_on = TRUE;
+	}
+}
+
+static void
+par_color(int argc, char **argv, int *option, int *opt_color, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Color flag to set. */
+	/* opt_color: Color to set. */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse a -foreground or -background specification. */
+
+	if (argc != 1 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if (argc == 1) {
+		if (strcmp(argv[0], "black") == 0)
+			*opt_color = BLACK;
+		else if (strcmp(argv[0], "red") == 0)
+			*opt_color = RED;
+		else if (strcmp(argv[0], "green") == 0)
+			*opt_color = GREEN;
+		else if (strcmp(argv[0], "yellow") == 0)
+			*opt_color = YELLOW;
+		else if (strcmp(argv[0], "blue") == 0)
+			*opt_color = BLUE;
+		else if (strcmp(argv[0], "magenta") == 0)
+			*opt_color = MAGENTA;
+		else if (strcmp(argv[0], "cyan") == 0)
+			*opt_color = CYAN;
+		else if (strcmp(argv[0], "white") == 0)
+			*opt_color = WHITE;
+		else if (strcmp(argv[0], "default") == 0)
+			*opt_color = DEFAULT;
+		else if (isdigit(argv[0][0]))
+			*opt_color = atoi(argv[0]);
+		else 
+			*bad_arg = TRUE;
+    
+		if(*opt_color < 0 || *opt_color > 9 || *opt_color == 8)
+			*bad_arg = TRUE;
+	}
+}
+
+static void
+par_color2(int argc, char **argv, int *option, int *opt_color, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Color flag to set. */
+	/* opt_color: Color to set. */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse a -ulcolor or -hbcolor specification. */
+
+	if (!argc || argc > 2 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	*opt_color = 0;
+	if (argc == 2) {
+		if (strcmp(argv[0], "bright") == 0)
+			*opt_color = 8;
+		else {
+			*bad_arg = TRUE;
+			return;
+		}
+	}
+	if (argc) {
+		if (strcmp(argv[argc-1], "black") == 0) {
+			if(*opt_color)
+				*bad_arg = TRUE;
+			else
+				*opt_color = BLACK;
+		} else if (strcmp(argv[argc-1], "grey") == 0) {
+			if(*opt_color)
+				*bad_arg = TRUE;
+			else
+				*opt_color = GREY;
+		} else if (strcmp(argv[argc-1], "red") == 0)
+			*opt_color |= RED;
+		else if (strcmp(argv[argc-1], "green") == 0)
+			*opt_color |= GREEN;
+		else if (strcmp(argv[argc-1], "yellow") == 0)
+			*opt_color |= YELLOW;
+		else if (strcmp(argv[argc-1], "blue") == 0)
+			*opt_color |= BLUE;
+		else if (strcmp(argv[argc-1], "magenta") == 0)
+			*opt_color |= MAGENTA;
+		else if (strcmp(argv[argc-1], "cyan") == 0)
+			*opt_color |= CYAN;
+		else if (strcmp(argv[argc-1], "white") == 0)
+			*opt_color |= WHITE;
+		else if (isdigit(argv[argc-1][0]))
+			*opt_color = atoi(argv[argc-1]);
+		else    
+			*bad_arg = TRUE;
+		if(*opt_color < 0 || *opt_color > 15)
+			*bad_arg = TRUE;
+	}
+}
+
+static void
+parse_clear(int argc, char **argv, int *option, int *opt_all, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Clear flag to set. */
+	/* opt_all: Clear all switch to set or reset. */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse a -clear specification. */
+
+	if (argc > 1 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if (argc == 1) {
+		if (strcmp(argv[0], "all") == 0)
+			*opt_all = TRUE;
+		else if (strcmp(argv[0], "rest") == 0)
+			*opt_all = FALSE;
+		else
+			*bad_arg = TRUE;
+	} else {
+		*opt_all = TRUE;
+	}
+}
+
+static void
+parse_blank(int argc, char **argv, int *option, int *opt_all, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Clear flag to set. */
+	/* opt_all: Clear all switch to set or reset. */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse a -blank specification. */
+
+	if (argc > 1 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if (argc == 1) {
+		*opt_all = atoi(argv[0]);
+		if ((*opt_all > 60) || (*opt_all < 0))
+			*bad_arg = TRUE;
+	} else {
+		*opt_all = 0;
+	}
+}
+
+static void
+parse_powersave(int argc, char **argv, int *option, int *opt_mode, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: powersave flag to set. */
+	/* opt_mode: Powersaving mode, defined in vesa_blank.c */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse a -powersave mode specification. */
+
+	if (argc > 1 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if (argc == 1) {
+		if (strcmp(argv[0], "on") == 0)
+			*opt_mode = 1;
+		else if (strcmp(argv[0], "vsync") == 0)
+			*opt_mode = 1;
+		else if (strcmp(argv[0], "hsync") == 0)
+			*opt_mode = 2;
+		else if (strcmp(argv[0], "powerdown") == 0)
+			*opt_mode = 3;
+		else if (strcmp(argv[0], "off") == 0)
+			*opt_mode = 0;
+		else
+			*bad_arg = TRUE;
+	} else {
+		*opt_mode = 0;
+	}
+}
+
+#if 0
+static void
+parse_standout(int argc, char *argv, int *option, int *opt_all, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Clear flag to set. */
+	/* opt_all: Clear all switch to set or reset. */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse a -standout specification. */
+
+	if (argc > 1 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if (argc == 1)
+		*opt_all = atoi(argv[0]);
+	else
+		*opt_all = -1;
+}
+#endif
+
+static void
+parse_msglevel(int argc, char **argv, int *option, int *opt_all, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Clear flag to set. */
+	/* opt_all: Clear all switch to set or reset. */
+	/* bad_arg: Set to true if an error is detected. */
+
+	if (argc > 1 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if (argc == 1) {
+		*opt_all = atoi(argv[0]);
+		if (*opt_all < 0 || *opt_all > 8)
+			*bad_arg = TRUE;
+	} else {
+		*opt_all = -1;
+	}
+}
+
+#ifndef DIET_SETTERM
+static void
+parse_snap(int argc, char **argv, int *option, int *opt_all, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Clear flag to set. */
+	/* opt_all: Clear all switch to set or reset. */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse a -dump or -append specification. */
+
+	if (argc > 1 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if (argc == 1) {
+		*opt_all = atoi(argv[0]);
+		if ((*opt_all <= 0))
+			*bad_arg = TRUE;
+	} else {
+		*opt_all = 0;
+	}
+}
+
+static void
+parse_snapfile(int argc, char **argv, int *option, int *opt_all, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Clear flag to set. */
+	/* opt_all: Clear all switch to set or reset. */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse a -file specification. */
+
+	if (argc != 1 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if (argc == 1)
+		strcpy((char *)opt_all, argv[0]);
+}
+#endif
+
+#ifndef DIET_SETTERM
+static void
+parse_tabs(int argc, char **argv, int *option, int *tab_array, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Clear flag to set. */
+	/* tab_array: Array of tabs */
+	/* bad_arg: Set to true if an error is detected. */
+
+	if (*option || argc > 160)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	tab_array[argc] = -1;
+	while(argc--) {
+		tab_array[argc] = atoi(argv[argc]);
+		if(tab_array[argc] < 1 || tab_array[argc] > 160) {
+			*bad_arg = TRUE;
+			return;
+		}
+	}
+}
+
+static void
+parse_clrtabs(int argc, char **argv, int *option, int *tab_array, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Clear flag to set. */
+	/* tab_array: Array of tabs */
+	/* bad_arg: Set to true if an error is detected. */
+
+	if (*option || argc > 160)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if(argc == 0) {
+		tab_array[0] = -1;
+		return;
+	}
+	tab_array[argc] = -1;
+	while(argc--) {
+		tab_array[argc] = atoi(argv[argc]);
+		if(tab_array[argc] < 1 || tab_array[argc] > 160) {
+			*bad_arg = TRUE;
+			return;
+		}
+	}
+}
+
+static void
+parse_regtabs(int argc, char **argv, int *option, int *opt_len, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Clear flag to set. */
+	/* opt_len: Regular tab length. */
+	/* bad_arg: Set to true if an error is detected. */
+
+	if (*option || argc > 1)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if(argc == 0) {
+		*opt_len = 8;
+		return;
+	}
+	*opt_len = atoi(argv[0]);
+	if(*opt_len < 1 || *opt_len > 160) {
+		*bad_arg = TRUE;
+		return;
+	}
+}
+#endif
+
+static void
+parse_blength(int argc, char **argv, int *option, int *opt_all, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Clear flag to set. */
+	/* opt_all */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse  -blength specification. */
+
+	if (argc > 1 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if (argc == 1) {
+		*opt_all = atoi(argv[0]);
+		if (*opt_all > 2000)
+			*bad_arg = TRUE;
+	} else {
+		*opt_all = 0;
+	}
+}
+
+static void
+parse_bfreq(int argc, char **argv, int *option, int *opt_all, int *bad_arg) {
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* option: Clear flag to set. */
+	/* opt_all */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse  -bfreq specification. */
+
+	if (argc > 1 || *option)
+		*bad_arg = TRUE;
+	*option = TRUE;
+	if (argc == 1) {
+		*opt_all = atoi(argv[0]);
+	} else {
+		*opt_all = 0;
+	}
+}
+
+
+#ifndef DIET_SETTERM
+static void
+show_tabs(void) {
+	int i, co = tigetnum("cols");
+
+	if(co > 0) {
+		printf("\r         ");
+		for(i = 10; i < co-2; i+=10)
+			printf("%-10d", i);
+		putchar('\n');
+		for(i = 1; i <= co; i++)
+			putchar(i%10+'0');
+		putchar('\n');
+		for(i = 1; i < co; i++)
+			printf("\tT\b");
+		putchar('\n');
+	}
+}
+#endif
+
+
+#define STRCMP(str1,str2) strncmp(str1,str2,strlen(str1))
+
+static void
+parse_option(char *option, int argc, char **argv, int *bad_arg) {
+	/* option: Option with leading '-' removed. */
+	/* argc: Number of arguments for this option. */
+	/* argv: Arguments for this option. */
+	/* bad_arg: Set to true if an error is detected. */
+
+/* Parse a single specification. */
+
+	if (STRCMP(option, "term") == 0)
+		parse_term(argc, argv, &opt_term, &opt_te_terminal_name, bad_arg);
+	else if (STRCMP(option, "reset") == 0)
+		parse_none(argc, argv, &opt_reset, bad_arg);
+	else if (STRCMP(option, "initialize") == 0)
+		parse_none(argc, argv, &opt_initialize, bad_arg);
+	else if (STRCMP(option, "cursor") == 0)
+		parse_switch(argc, argv, &opt_cursor, &opt_cu_on, bad_arg);
+	else if (STRCMP(option, "repeat") == 0)
+		parse_switch(argc, argv, &opt_repeat, &opt_rep_on, bad_arg);
+	else if (STRCMP(option, "appcursorkeys") == 0)
+		parse_switch(argc, argv, &opt_appcursorkeys, &opt_appck_on, bad_arg);
+	else if (STRCMP(option, "linewrap") == 0)
+		parse_switch(argc, argv, &opt_linewrap, &opt_li_on, bad_arg);
+#if 0
+	else if (STRCMP(option, "snow") == 0)
+		parse_switch(argc, argv, &opt_snow, &opt_sn_on, bad_arg);
+	else if (STRCMP(option, "softscroll") == 0)
+		parse_switch(argc, argv, &opt_softscroll, &opt_so_on, bad_arg);
+#endif
+	else if (STRCMP(option, "default") == 0)
+		parse_none(argc, argv, &opt_default, bad_arg);
+	else if (STRCMP(option, "foreground") == 0)
+		par_color(argc, argv, &opt_foreground, &opt_fo_color, bad_arg);
+	else if (STRCMP(option, "background") == 0)
+		par_color(argc, argv, &opt_background, &opt_ba_color, bad_arg);
+	else if (STRCMP(option, "ulcolor") == 0)
+		par_color2(argc, argv, &opt_ulcolor, &opt_ul_color, bad_arg);
+	else if (STRCMP(option, "hbcolor") == 0)
+		par_color2(argc, argv, &opt_hbcolor, &opt_hb_color, bad_arg);
+	else if (STRCMP(option, "inversescreen") == 0)
+		parse_switch(argc, argv, &opt_inversescreen, &opt_invsc_on, bad_arg);
+	else if (STRCMP(option, "bold") == 0)
+		parse_switch(argc, argv, &opt_bold, &opt_bo_on, bad_arg);
+	else if (STRCMP(option, "half-bright") == 0)
+		parse_switch(argc, argv, &opt_halfbright, &opt_hb_on, bad_arg);
+	else if (STRCMP(option, "blink") == 0)
+		parse_switch(argc, argv, &opt_blink, &opt_bl_on, bad_arg);
+	else if (STRCMP(option, "reverse") == 0)
+		parse_switch(argc, argv, &opt_reverse, &opt_re_on, bad_arg);
+	else if (STRCMP(option, "underline") == 0)
+		parse_switch(argc, argv, &opt_underline, &opt_un_on, bad_arg);
+	else if (STRCMP(option, "store") == 0)
+		parse_none(argc, argv, &opt_store, bad_arg);
+	else if (STRCMP(option, "clear") == 0)
+		parse_clear(argc, argv, &opt_clear, &opt_cl_all, bad_arg);
+#ifndef DIET_SETTERM
+	else if (STRCMP(option, "tabs") == 0)
+		parse_tabs(argc, argv, &opt_tabs, opt_tb_array, bad_arg);
+	else if (STRCMP(option, "clrtabs") == 0)
+		parse_clrtabs(argc, argv, &opt_clrtabs, opt_tb_array, bad_arg);
+	else if (STRCMP(option, "regtabs") == 0)
+		parse_regtabs(argc, argv, &opt_regtabs, &opt_rt_len, bad_arg);
+#endif
+	else if (STRCMP(option, "blank") == 0)
+		parse_blank(argc, argv, &opt_blank, &opt_bl_min, bad_arg);
+#ifndef DIET_SETTERM
+	else if (STRCMP(option, "dump") == 0)
+		parse_snap(argc, argv, &opt_snap, &opt_sn_num, bad_arg);
+	else if (STRCMP(option, "append") == 0)
+		parse_snap(argc, argv, &opt_append, &opt_sn_num, bad_arg);
+	else if (STRCMP(option, "file") == 0)
+		parse_snapfile(argc, argv, &opt_snapfile, (int *)opt_sn_name, bad_arg);
+#endif
+	else if (STRCMP(option, "msg") == 0)
+		parse_switch(argc, argv, &opt_msg, &opt_msg_on, bad_arg);
+	else if (STRCMP(option, "msglevel") == 0)
+		parse_msglevel(argc, argv, &opt_msglevel, &opt_msglevel_num, bad_arg);
+	else if (STRCMP(option, "powersave") == 0)
+		parse_powersave(argc, argv, &opt_powersave, &opt_ps_mode, bad_arg);
+	else if (STRCMP(option, "powerdown") == 0)
+		parse_blank(argc, argv, &opt_powerdown, &opt_pd_min, bad_arg);
+	else if (STRCMP(option, "blength") == 0)
+		parse_blength(argc, argv, &opt_blength, &opt_blength_l, bad_arg);
+	else if (STRCMP(option, "bfreq") == 0)
+		parse_bfreq(argc, argv, &opt_bfreq, &opt_bfreq_f, bad_arg);
+#if 0
+	else if (STRCMP(option, "standout") == 0)
+		parse_standout(argc, argv, &opt_standout, &opt_st_attr, bad_arg);
+#endif
+	else
+		*bad_arg = TRUE;
+}
+
+/* End of command line parsing routines. */
+
+static void
+usage(char *prog_name) {
+/* Print error message about arguments, and the command's syntax. */
+
+	fprintf(stderr, _("%s: Argument error, usage\n"), prog_name);
+#ifndef NO_USAGE
+	fprintf(stderr, "\n");
+	fprintf(stderr, "%s\n", prog_name);
+	fprintf(stderr, _("  [ -term terminal_name ]\n"));
+	fprintf(stderr, _("  [ -reset ]\n"));
+	fprintf(stderr, _("  [ -initialize ]\n"));
+	fprintf(stderr, _("  [ -cursor [on|off] ]\n"));
+#if 0
+	fprintf(stderr, _("  [ -snow [on|off] ]\n"));
+	fprintf(stderr, _("  [ -softscroll [on|off] ]\n"));
+#endif
+	fprintf(stderr, _("  [ -repeat [on|off] ]\n"));
+	fprintf(stderr, _("  [ -appcursorkeys [on|off] ]\n"));
+	fprintf(stderr, _("  [ -linewrap [on|off] ]\n"));
+	fprintf(stderr, _("  [ -default ]\n"));
+	fprintf(stderr, _("  [ -foreground black|blue|green|cyan"));
+	fprintf(stderr, _("|red|magenta|yellow|white|default ]\n"));
+	fprintf(stderr, _("  [ -background black|blue|green|cyan"));
+	fprintf(stderr, _("|red|magenta|yellow|white|default ]\n"));
+	fprintf(stderr, _("  [ -ulcolor black|grey|blue|green|cyan"));
+	fprintf(stderr, _("|red|magenta|yellow|white ]\n"));
+	fprintf(stderr, _("  [ -ulcolor bright blue|green|cyan"));
+	fprintf(stderr, _("|red|magenta|yellow|white ]\n"));
+	fprintf(stderr, _("  [ -hbcolor black|grey|blue|green|cyan"));
+	fprintf(stderr, _("|red|magenta|yellow|white ]\n"));
+	fprintf(stderr, _("  [ -hbcolor bright blue|green|cyan"));
+	fprintf(stderr, _("|red|magenta|yellow|white ]\n"));
+#if 0
+	fprintf(stderr, _("  [ -standout [ attr ] ]\n"));
+#endif
+	fprintf(stderr, _("  [ -inversescreen [on|off] ]\n"));
+	fprintf(stderr, _("  [ -bold [on|off] ]\n"));
+	fprintf(stderr, _("  [ -half-bright [on|off] ]\n"));
+	fprintf(stderr, _("  [ -blink [on|off] ]\n"));
+	fprintf(stderr, _("  [ -reverse [on|off] ]\n"));
+	fprintf(stderr, _("  [ -underline [on|off] ]\n"));
+	fprintf(stderr, _("  [ -store ]\n"));
+	fprintf(stderr, _("  [ -clear [all|rest] ]\n"));
+#ifndef DIET_SETTERM
+	fprintf(stderr, _("  [ -tabs [ tab1 tab2 tab3 ... ] ]      (tabn = 1-160)\n"));
+	fprintf(stderr, _("  [ -clrtabs [ tab1 tab2 tab3 ... ] ]   (tabn = 1-160)\n"));
+	fprintf(stderr, _("  [ -regtabs [1-160] ]\n"));
+#endif
+	fprintf(stderr, _("  [ -blank [0-60] ]\n"));
+#ifndef DIET_SETTERM
+	fprintf(stderr, _("  [ -dump   [1-NR_CONSOLES] ]\n"));
+	fprintf(stderr, _("  [ -append [1-NR_CONSOLES] ]\n"));
+	fprintf(stderr, _("  [ -file dumpfilename ]\n"));
+#endif
+	fprintf(stderr, _("  [ -msg [on|off] ]\n"));
+	fprintf(stderr, _("  [ -msglevel [0-8] ]\n"));
+	fprintf(stderr, _("  [ -powersave [on|vsync|hsync|powerdown|off] ]\n"));
+	fprintf(stderr, _("  [ -powerdown [0-60] ]\n"));
+	fprintf(stderr, _("  [ -blength [0-2000] ]\n"));
+	fprintf(stderr, _("  [ -bfreq freqnumber ]\n"));
+#endif
+}
+
+#ifndef DIET_SETTERM
+static char *ti_entry(const char *name) {
+	/* name: Terminfo capability string to lookup. */
+
+/* Return the specified terminfo string, or an empty string if no such terminfo
+ * capability exists.
+ */
+
+	char *buf_ptr;
+
+	if ((buf_ptr = tigetstr((char *)name)) == (char *)-1)
+		buf_ptr = NULL;
+	return buf_ptr;
+}
+#endif
+
+static void
+perform_sequence(int vcterm) {
+	/* vcterm: Set if terminal is a virtual console. */
+
+	int result;
+/* Perform the selected options. */
+
+	/* -reset. */
+	if (opt_reset) {
+#ifdef DIET_SETTERM
+		printf("\033c\033]R");
+#else
+		putp(ti_entry("rs1"));
+#endif
+	}
+
+	/* -initialize. */
+	if (opt_initialize) {
+#ifndef DIET_SETTERM
+		putp(ti_entry("is2"));
+#endif
+	}
+
+	/* -cursor [on|off]. */
+	if (opt_cursor) {
+		if (opt_cu_on)
+#ifdef DIET_SETTERM
+			printf("\033[?25h\033[?0c");
+#else
+			putp(ti_entry("cnorm"));
+#endif
+		else
+#ifdef DIET_SETTERM
+			printf("\033[?25l\033[?1c");
+#else
+			putp(ti_entry("civis"));
+#endif
+	}
+
+	/* -linewrap [on|off]. Vc only (vt102) */
+	if (opt_linewrap && vcterm) {
+		if (opt_li_on)
+			printf("\033[?7h");
+		else
+			printf("\033[?7l");
+	}
+
+	/* -repeat [on|off]. Vc only (vt102) */
+	if (opt_repeat && vcterm) {
+		if (opt_rep_on)
+			printf("\033[?8h");
+		else
+			printf("\033[?8l");
+	}
+
+	/* -appcursorkeys [on|off]. Vc only (vt102) */
+	if (opt_appcursorkeys && vcterm) {
+		if (opt_appck_on)
+			printf("\033[?1h");
+		else
+			printf("\033[?1l");
+	}
+
+#if 0
+	/* -snow [on|off].  Vc only. */
+	if (opt_snow && vcterm) {
+		if (opt_sn_on)
+			printf("%s%s%s", DCS, "snow.on", ST);
+		else
+			printf("%s%s%s", DCS, "snow.off", ST);
+	}
+
+	/* -softscroll [on|off].  Vc only. */
+	if (opt_softscroll && vcterm) {
+		if (opt_so_on)
+			printf("%s%s%s", DCS, "softscroll.on", ST);
+		else
+			printf("%s%s%s", DCS, "softscroll.off", ST);
+	}
+#endif
+
+	/* -default.  Vc sets default rendition, otherwise clears all
+	 * attributes.
+	 */
+	if (opt_default) {
+		if (vcterm)
+			printf("\033[0m");
+#ifndef DIET_SETTERM
+		else
+			putp(ti_entry("sgr0"));
+#endif
+	}
+
+	/* -foreground black|red|green|yellow|blue|magenta|cyan|white|default.
+	 * Vc only (ANSI).
+	 */
+	if (opt_foreground && vcterm) {
+		printf("%s%s%c%s", ESC, "[3", '0' + opt_fo_color, "m");
+	}
+
+	/* -background black|red|green|yellow|blue|magenta|cyan|white|default.
+	 * Vc only (ANSI).
+	 */
+	if (opt_background && vcterm) {
+		printf("%s%s%c%s", ESC, "[4", '0' + opt_ba_color, "m");
+	}
+
+	/* -ulcolor black|red|green|yellow|blue|magenta|cyan|white|default.
+	 * Vc only.
+	 */
+	if (opt_ulcolor && vcterm) {
+		printf("\033[1;%d]", opt_ul_color);
+	}
+
+	/* -hbcolor black|red|green|yellow|blue|magenta|cyan|white|default.
+	 * Vc only.
+	 */
+	if (opt_hbcolor && vcterm) {
+		printf("\033[2;%d]", opt_hb_color);
+	}
+
+	/* -inversescreen [on|off].  Vc only (vt102).
+	 */
+	if (opt_inversescreen) {
+		if (vcterm) {
+			if (opt_invsc_on)
+				printf("\033[?5h");
+			else
+				printf("\033[?5l");
+		}
+	}
+
+	/* -bold [on|off].  Vc behaves as expected, otherwise off turns off
+	 * all attributes.
+	 */
+	if (opt_bold) {
+		if (opt_bo_on)
+#ifdef DIET_SETTERM
+			printf("\033[1m");
+#else
+			putp(ti_entry("bold"));
+#endif
+		else {
+			if (vcterm)
+				printf("%s%s", ESC, "[22m");
+#ifndef DIET_SETTERM
+			else
+				putp(ti_entry("sgr0"));
+#endif
+		}
+	}
+
+	/* -half-bright [on|off].  Vc behaves as expected, otherwise off turns off
+	 * all attributes.
+	 */
+	if (opt_halfbright) {
+		if (opt_hb_on)
+#ifdef DIET_SETTERM
+			printf("\033[2m");
+#else
+			putp(ti_entry("dim"));
+#endif
+		else {
+			if (vcterm)
+				printf("%s%s", ESC, "[22m");
+#ifndef DIET_SETTERM
+			else
+				putp(ti_entry("sgr0"));
+#endif
+		}
+	}
+
+	/* -blink [on|off].  Vc behaves as expected, otherwise off turns off
+	 * all attributes.
+	 */
+	if (opt_blink) {
+		if (opt_bl_on)
+#ifdef DIET_SETTERM
+			printf("\033[5m");
+#else
+			putp(ti_entry("blink"));
+#endif
+		else {
+			if (vcterm)
+				printf("%s%s", ESC, "[25m");
+#ifndef DIET_SETTERM
+			else
+				putp(ti_entry("sgr0"));
+#endif
+		}
+	}
+
+	/* -reverse [on|off].  Vc behaves as expected, otherwise off turns
+	 * off all attributes.
+	 */
+	if (opt_reverse) {
+		if (opt_re_on)
+#ifdef DIET_SETTERM
+			printf("\033[7m");
+#else
+			putp(ti_entry("rev"));
+#endif
+		else {
+			if (vcterm)
+				printf("%s%s", ESC, "[27m");
+#ifndef DIET_SETTERM
+			else
+				putp(ti_entry("sgr0"));
+#endif
+		}
+	}
+
+	/* -underline [on|off]. */
+	if (opt_underline) {
+		if (opt_un_on)
+#ifdef DIET_SETTERM
+			printf("\033[4m");
+#else
+			putp(ti_entry("smul"));
+#endif
+		else
+#ifdef DIET_SETTERM
+			printf("\033[24m");
+#else
+			putp(ti_entry("rmul"));
+#endif
+	}
+
+	/* -store.  Vc only. */
+	if (opt_store && vcterm) {
+		printf("\033[8]");
+	}
+
+	/* -clear [all|rest]. */
+	if (opt_clear) {
+		if (opt_cl_all)
+#ifdef DIET_SETTERM
+			printf("\033[H\033[J");
+#else
+			putp(ti_entry("clear"));
+#endif
+		else
+#ifdef DIET_SETTERM
+			printf("\033[J");
+#else
+			putp(ti_entry("ed"));
+#endif
+	}
+
+#ifndef DIET_SETTERM
+	/* -tabs Vc only. */
+	if (opt_tabs && vcterm) {
+		int i;
+
+		if (opt_tb_array[0] == -1)
+			show_tabs();
+		else {
+			for(i=0; opt_tb_array[i] > 0; i++)
+				printf("\033[%dG\033H", opt_tb_array[i]);
+			putchar('\r');
+		}
+	}
+
+	/* -clrtabs Vc only. */
+	if (opt_clrtabs && vcterm) {
+		int i;
+
+		if (opt_tb_array[0] == -1)
+			printf("\033[3g");
+		else
+			for(i=0; opt_tb_array[i] > 0; i++)
+				printf("\033[%dG\033[g", opt_tb_array[i]);
+		putchar('\r');
+	}
+
+	/* -regtabs Vc only. */
+	if (opt_regtabs && vcterm) {
+		int i;
+
+		printf("\033[3g\r");
+		for(i=opt_rt_len+1; i<=160; i+=opt_rt_len)
+			printf("\033[%dC\033H",opt_rt_len);
+		putchar('\r');
+	}
+#endif
+
+	/* -blank [0-60]. */
+	if (opt_blank && vcterm) 
+		printf("\033[9;%d]", opt_bl_min);
+    
+	/* -powersave [on|vsync|hsync|powerdown|off] (console) */
+	if (opt_powersave) {
+		char ioctlarg[2];
+		ioctlarg[0] = 10;	/* powersave */
+		ioctlarg[1] = opt_ps_mode;
+		if (ioctl(0,TIOCLINUX,ioctlarg))
+			fprintf(stderr,_("cannot (un)set powersave mode\n"));
+	}
+
+	/* -powerdown [0-60]. */
+	if (opt_powerdown) {
+		printf("\033[14;%d]", opt_pd_min);
+	}
+
+#if 0
+	/* -standout [num]. */
+	if (opt_standout)
+		/* nothing */;
+#endif
+
+#ifndef DIET_SETTERM
+	/* -snap [1-NR_CONS]. */
+	if (opt_snap || opt_append) {
+		FILE *F;
+
+		F = fopen(opt_sn_name, opt_snap ? "w" : "a");
+		if (!F) {
+			perror(opt_sn_name);
+			fprintf(stderr,("setterm: can not open dump file %s for output\n"),
+				opt_sn_name); 
+			exit(-1);
+		}
+		screendump(opt_sn_num, F);
+		fclose(F);
+	}
+#endif
+
+	/* -msg [on|off]. */
+	if (opt_msg && vcterm) {
+		if (opt_msg_on)
+			/* 7 -- Enable printk's to console */
+			result = klogctl(7, NULL, 0);
+		else
+			/*  6 -- Disable printk's to console */
+			result = klogctl(6, NULL, 0);
+
+		if (result != 0)
+			printf(_("klogctl error: %s\n"), strerror(result));
+	}
+
+	/* -msglevel [0-8] */
+	if (opt_msglevel && vcterm) {
+		/* 8 -- Set level of messages printed to console */
+		result = klogctl(8, NULL, opt_msglevel_num);
+		if (result != 0)
+			printf(_("klogctl error: %s\n"), strerror(result));
+	}
+
+	/* -blength [0-2000] */
+	if (opt_blength && vcterm) {
+		printf("\033[11;%d]", opt_blength_l);
+	}
+  
+	/* -bfreq freqnumber */
+	if (opt_bfreq && vcterm) {
+		printf("\033[10;%d]", opt_bfreq_f);
+	}
+
+}
+
+#ifndef DIET_SETTERM
+static void
+screendump(int vcnum, FILE *F) {
+    char infile[MAXPATHLEN];
+    unsigned char header[4];
+    unsigned int rows, cols;
+    int fd, i, j;
+    char *inbuf, *outbuf, *p, *q;
+
+    sprintf(infile, "/dev/vcsa%d", vcnum);
+    fd = open(infile, O_RDONLY);
+    if (fd < 0 && vcnum == 0) {
+	/* vcsa0 is often called vcsa */
+	sprintf(infile, "/dev/vcsa");
+	fd = open(infile, O_RDONLY);
+    }
+    if (fd < 0) {
+	/* try devfs name - for zero vcnum just /dev/vcc/a */
+	/* some gcc's warn for %.u - add 0 */
+	sprintf(infile, "/dev/vcc/a%.0u", vcnum);
+	fd = open(infile, O_RDONLY);
+    }
+    if (fd < 0) {
+	sprintf(infile, "/dev/vcsa%d", vcnum);
+	goto try_ioctl;
+    }
+    if (read(fd, header, 4) != 4)
+	goto try_ioctl;
+    rows = header[0];
+    cols = header[1];
+    if (rows * cols == 0)
+        goto try_ioctl;
+    inbuf = malloc(rows*cols*2);
+    outbuf = malloc(rows*(cols+1));
+    if(!inbuf || !outbuf) {
+	fputs(_("Out of memory"), stderr);
+	exit(1);
+    }
+    if (read(fd, inbuf, rows*cols*2) != rows*cols*2) {
+	fprintf(stderr, _("Error reading %s\n"), infile);
+	exit(1);
+    }
+    p = inbuf;
+    q = outbuf;
+    for(i=0; i<rows; i++) {
+	for(j=0; j<cols; j++) {
+	    *q++ = *p;
+	    p += 2;
+	}
+	while(j-- > 0 && q[-1] == ' ')
+	  q--;
+	*q++ = '\n';
+    }
+    if (fwrite(outbuf, 1, q-outbuf, F) != q-outbuf) {
+	fprintf(stderr, _("Error writing screendump\n"));
+	exit(1);
+    }
+    return;
+
+try_ioctl:
+    {
+#define NUM_COLS 160
+#define NUM_ROWS 75
+	char buf[NUM_COLS+1];
+	unsigned char screenbuf[NUM_ROWS*NUM_COLS];
+	screenbuf[0] = 0;
+	screenbuf[1] = (unsigned char) vcnum;
+	if (ioctl(0,TIOCLINUX,screenbuf) < 0) {
+	    fprintf(stderr,_("couldn't read %s, and cannot ioctl dump\n"),
+		    infile);
+	    exit(1);
+	}
+	rows = screenbuf[0];
+	cols = screenbuf[1];
+
+	for (i=0; i<rows; i++) {
+	    strncpy(buf, screenbuf+2+(cols*i), cols);
+	    buf[cols] = '\0';
+	    j = cols;
+	    while (--j && (buf[j] == ' '))
+	      buf[j] = '\0';
+	    fputs(buf,F);
+	    fputc('\n',F); 
+	}
+    }
+}
+#endif
+
+int
+setterm_main(int argc, char **argv) {
+	int bad_arg = FALSE;		/* Set if error in arguments. */
+	int arg, modifier;
+	char *term;			/* Terminal type. */
+	int vcterm;			/* Set if terminal is a virtual console. */
+
+#ifndef DIET_SETTERM
+	setlocale(LC_ALL, "");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
+#endif
+  
+	if (argc < 2)
+		bad_arg = TRUE;
+
+	/* Parse arguments. */
+
+	for (arg = 1; arg < argc;) {
+		if (*argv[arg] == '-') {
+
+			/* Parse a single option. */
+
+			for (modifier = arg + 1; modifier < argc; modifier++) {
+				if (*argv[modifier] == '-') break;
+			}
+			parse_option(argv[arg] + 1, modifier - arg - 1,
+				     &argv[arg + 1], &bad_arg);
+			arg = modifier;
+		} else {
+			bad_arg = TRUE;
+			arg++;
+		}
+	}
+
+	/* Display syntax message if error in arguments. */
+
+	if (bad_arg) {
+		usage(argv[0]);
+		exit(1);
+	}
+
+	/* Find out terminal name. */
+
+	if (opt_term) {
+		term = opt_te_terminal_name;
+	} else {
+		term = getenv("TERM");
+		if (term == NULL) {
+			fprintf(stderr, _("%s: $TERM is not defined.\n"),
+				argv[0]);
+			exit(1);
+		}
+	}
+
+	/* Find terminfo entry. */
+
+#ifndef DIET_SETTERM
+	setupterm(term, 1, (int *)0);
+#endif
+
+	/* See if the terminal is a virtual console terminal. */
+
+	vcterm = (!strncmp(term, "con", 3) || !strncmp(term, "linux",
+						       5));
+#ifdef DIET_SETTERM
+	if (!vcterm) {
+		fprintf(stderr, "%s: setterm compiled with"
+			" DIET_SETTERM only supports the linux"
+			" console\n",
+			argv[0]);
+		exit(1);
+	}
+#endif
+
+	/* Perform the selected options. */
+
+	perform_sequence(vcterm);
+
+	return 0;
+}



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