[Midnightbsd-cvs] src: src/bin: Add Matt Dillon's notty program.

[laffer1 at midnightbsd.org]

Log Message:
-----------
Add Matt Dillon's notty program.

Modified Files:
--------------
    src/bin:
        Makefile (r1.5 -> r1.6)

Added Files:
-----------
    src/bin/notty:
        Makefile (r1.1)
        notty.1 (r1.1)
        notty.c (r1.1)

-------------- next part --------------
Index: Makefile
===================================================================
RCS file: /home/cvs/src/bin/Makefile,v
retrieving revision 1.5
retrieving revision 1.6
diff -L bin/Makefile -L bin/Makefile -u -r1.5 -r1.6
--- bin/Makefile
+++ bin/Makefile
@@ -25,6 +25,7 @@
 	mkdir \
 	mksh \
 	mv \
+	notty \
 	pax \
 	ps \
 	pwd \
--- /dev/null
+++ bin/notty/notty.1
@@ -0,0 +1,38 @@
+.\"
+.\" $MidnightBSD: src/bin/notty/notty.1,v 1.1 2008/08/17 03:13:54 laffer1 Exp $
+.\" $DragonFly: src/bin/notty/notty.1,v 1.3 2008/06/24 21:13:26 thomas Exp $
+.Dd May 27, 2008
+.Dt NOTTY 1
+.Os
+.Sh NAME
+.Nm notty
+.Nd Execute a program in the background, detached from the controlling terminal
+.Sh SYNOPSIS
+.Nm
+.Op Fl 012
+.Ar command Ar args ...
+.Sh DESCRIPTION
+The
+.Nm
+utility will detach the specified command from the controlling terminal,
+running it in the background.  By default stdin, stdout, and stderr are
+set to /dev/null.
+.Pp
+The following options are available:
+.Bl -tag -width indent
+.It Fl 0
+Leave stdin open.
+.It Fl 1
+Leave stdout open.
+.It Fl 2
+Leave stderr open.
+.El
+.Sh HISTORY
+The
+.Nm
+command was originally written in 1994 by Matthew Dillon to provide
+a convenient shortcut for detaching programs.
+.Nm
+was added in 
+.Mx 0.3
+.
--- /dev/null
+++ bin/notty/notty.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2008 The DragonFly Project.  All rights reserved.
+ * 
+ * This code is derived from software contributed to The DragonFly Project
+ * by Matthew Dillon <dillon at backplane.com>
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of The DragonFly Project nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific, prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * $DragonFly: src/bin/notty/notty.c,v 1.2 2008/06/24 21:13:26 thomas Exp $
+ */
+/*
+ * NOTTY.C - program to disconnect a program from the tty and close
+ *           stdin, stdout, and stderr (-012 to specify which descriptors
+ *           to leave open).
+ *
+ * NOTTY [-012] <command>
+ */
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <unistd.h>
+
+static void usage(void);
+
+int
+main(int ac, char **av)
+{
+	const char *opts = "";
+	int ttyfd;
+	int fd;
+
+	if (ac == 1)
+		usage();
+
+	if (av[1]) {
+		if (av[1][0] == '-') {
+			opts = av[1];
+			++av;
+		}
+	}
+
+
+	ttyfd = open("/dev/null", O_RDWR);
+
+	if (strchr(opts, '0') == NULL && ttyfd != 0)
+		dup2(ttyfd, 0);
+	if (strchr(opts, '1') == NULL && ttyfd != 1)
+		dup2(ttyfd, 1);
+	if (strchr(opts, '2') == NULL && ttyfd != 2)
+		dup2(ttyfd, 2);
+
+	if (ttyfd > 2)
+		close(ttyfd);
+
+	fd = open("/dev/tty", O_RDWR);
+	if (fd >= 0) {
+		ioctl(fd, TIOCNOTTY, 0);
+		close(fd);
+	} 
+
+	if (fork() == 0) {
+		setsid();
+		exit(execvp(av[1], av + 1));
+	}
+	exit(0);
+}
+
+static void
+usage(void)
+{
+	fprintf(stderr, "notty [-012] command args ...\n");
+	exit(1);
+}
+
--- /dev/null
+++ bin/notty/Makefile
@@ -0,0 +1,8 @@
+# $MidnightBSD: src/bin/notty/Makefile,v 1.1 2008/08/17 03:13:54 laffer1 Exp $
+# $DragonFly: src/bin/notty/Makefile,v 1.1 2008/05/27 17:10:49 dillon Exp $
+
+PROG=	notty
+SRCS=	notty.c
+MAN=	notty.1
+
+.include <bsd.prog.mk>