From ec0c48cb296185c5af585c9f9a7213cd4177dbb5 Mon Sep 17 00:00:00 2001
From: Glenn L McGrath <bug1@ihug.co.nz>
Date: Mon, 16 Sep 2002 03:16:06 +0000
Subject: [PATCH] openvt applet by Quy Tonthat

---
 console-tools/Makefile.in |  1 +
 console-tools/config.in   |  1 +
 console-tools/openvt.c    | 84 +++++++++++++++++++++++++++++++++++++++
 include/applets.h         |  3 ++
 include/usage.h           |  7 ++++
 5 files changed, 96 insertions(+)
 create mode 100644 console-tools/openvt.c

diff --git a/console-tools/Makefile.in b/console-tools/Makefile.in
index bc0335643..c2c1bad6a 100644
--- a/console-tools/Makefile.in
+++ b/console-tools/Makefile.in
@@ -30,6 +30,7 @@ CONSOLETOOLS_DIR-$(CONFIG_DUMPKMAP)	+= dumpkmap.o
 CONSOLETOOLS_DIR-$(CONFIG_LOADACM)	+= loadacm.o
 CONSOLETOOLS_DIR-$(CONFIG_LOADFONT)	+= loadfont.o
 CONSOLETOOLS_DIR-$(CONFIG_LOADKMAP)	+= loadkmap.o
+CONSOLETOOLS_DIR-$(CONFIG_OPENVT)	+= openvt.o
 CONSOLETOOLS_DIR-$(CONFIG_RESET)	+= reset.o
 CONSOLETOOLS_DIR-$(CONFIG_SETKEYCODES)	+= setkeycodes.o
 
diff --git a/console-tools/config.in b/console-tools/config.in
index 53d5ac6b4..2ea96aec4 100644
--- a/console-tools/config.in
+++ b/console-tools/config.in
@@ -12,6 +12,7 @@ bool 'dumpkmap'	    CONFIG_DUMPKMAP
 bool 'loadacm'	    CONFIG_LOADACM
 bool 'loadfont'	    CONFIG_LOADFONT
 bool 'loadkmap'	    CONFIG_LOADKMAP
+bool 'openvt'	    CONFIG_OPENVT
 bool 'reset'	    CONFIG_RESET
 bool 'setkeycodes'  CONFIG_SETKEYCODES
 
diff --git a/console-tools/openvt.c b/console-tools/openvt.c
new file mode 100644
index 000000000..3373edd29
--- /dev/null
+++ b/console-tools/openvt.c
@@ -0,0 +1,84 @@
+/* vi: set sw=4 ts=4: */
+
+/*
+ * openvt.c - open a vt to run a command.
+ *
+ * busyboxed by Quy Tonthat <quy@signal3.com>
+ */
+
+/* getopt not needed */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/types.h>
+#include "busybox.h"
+
+#define VTNAME "/dev/tty%d"
+
+int openvt_main(int argc, char **argv)
+{
+	int pid;
+	int fd;
+	int vtno;
+	char vtname[sizeof VTNAME + 2];
+	char * cmd = NULL;
+	char * cmd_args = NULL;
+
+	if (argc < 3)
+        show_usage();
+
+	if (!isdigit(argv[1][0]))
+	        show_usage();
+
+	vtno = (int) atol(argv[1]);
+
+	/* if (vtno <= 0 || vtno > 63) */
+	if (vtno <= 0 || vtno > 12)
+		error_msg_and_die("Illegal vt number (%d)", vtno);	  
+
+	sprintf(vtname, VTNAME, vtno);
+
+	cmd = argv[2];
+	cmd_args = xmalloc(80);
+	cmd_args[0] = '\0';
+
+	if((pid = fork()) == 0) {
+		/* leave current vt */
+
+#ifdef   ESIX_5_3_2_D
+		if (setpgrp() < 0) {
+#else
+		if (setsid() < 0) {
+#endif
+
+			perror_msg_and_die("Unable to set new session");	  
+		}
+		close(0);			/* so that new vt becomes stdin */
+
+		/* and grab new one */
+		if ((fd = open(vtname, O_RDWR)) == -1)
+			perror_msg_and_die("could not open %s", vtname);	  
+
+		/* Reassign stdout and sterr */
+		close(1);
+		close(2);
+		dup(fd);
+		dup(fd);
+
+		execvp(cmd, &argv[2]);
+		/*execlp(cmd, cmd_args);*/
+		_exit(1);
+	}
+	return EXIT_SUCCESS;
+}
+
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
diff --git a/include/applets.h b/include/applets.h
index 9117880ad..38d75344f 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -341,6 +341,9 @@
 #ifdef CONFIG_OD
 	APPLET(od, od_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
 #endif
+#ifdef CONFIG_OPENVT
+	APPLET(openvt, openvt_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
+#endif
 #ifdef CONFIG_PASSWD
 	APPLET(passwd, passwd_main, _BB_DIR_USR_BIN, _BB_SUID_ALWAYS)
 #endif
diff --git a/include/usage.h b/include/usage.h
index 9e16a085f..98b81cf1d 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -1347,6 +1347,13 @@
 	"Write an unambiguous representation, octal bytes by default, of FILE\n"\
 	"to standard output.  With no FILE, or when FILE is -, read standard input."
 
+#define openvt_trivial_usage \
+	"<vtnum> <COMMAND> [ARGS...]"
+#define openvt_full_usage \
+	"Start a command on a new virtual terminal"
+#define openvt_example_usage \
+	"openvt 2 /bin/ash\n"
+
 #ifdef CONFIG_FEATURE_SHA1_PASSWORDS
   #define PASSWORD_ALG_TYPES(a) a
 #else   
-- 
2.25.1