initial import to sourceforge

12 files changed, 3306 insertions, 0 deletions

diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..d60c31a
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,340 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	    How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    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
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year  name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/Makefile.in b/Makefile.in
new file mode 100644
index 0000000..918eafa
--- /dev/null
+++ b/Makefile.in
@@ -0,0 +1,35 @@
+srcdir = @srcdir@
+CC = @CC@
+CFLAGS = -W -Wall -I. @CFLAGS@
+LDFLAGS = @LDFLAGS@
+LIBS = @LIBS@
+VERSION = 0.3
+VPATH = $(srcdir)
+
+OBJ = attach.o master.o main.o
+SRC = $(srcdir)/attach.c $(srcdir)/master.c $(srcdir)/main.c
+
+TARFILES = $(srcdir)/README $(srcdir)/COPYING $(srcdir)/*.in $(srcdir)/*.c \
+	   $(srcdir)/*.h $(srcdir)/dtach.spec $(srcdir)/configure \
+	   $(srcdir)/dtach.1
+
+dtach: $(OBJ)
+	$(CC) -o $@ $(LDFLAGS) $^ $(LIBS)
+
+clean:
+	rm -f .depend dtach $(OBJ) dtach-$(VERSION).tar.gz
+
+distclean: clean
+	rm -f config.h Makefile config.log config.status config.cache
+
+tar:
+	mkdir dtach-$(VERSION)
+	cp $(TARFILES) dtach-$(VERSION)
+	tar -cf dtach-$(VERSION).tar dtach-$(VERSION)/
+	gzip -9f dtach-$(VERSION).tar
+	rm -rf dtach-$(VERSION)
+
+.depend:
+	@$(CC) $(CFLAGS) -MM $(SRC) > $@
+
+-include .depend
diff --git a/README b/README
new file mode 100644
index 0000000..c881c0d
--- /dev/null
+++ b/README
@@ -0,0 +1,30 @@
+dtach is a program written in C that emulates the detach feature of
+screen, which allows a program to be executed in an environment that is
+protected from the controlling terminal. For instance, the program under
+the control of dtach would not be affected by the terminal being
+disconnected for some reason.
+
+dtach was written because screen did not adequately meet my needs; I did
+not need the other features of screen, such as its support of multiple
+terminals or its terminal emulation support. screen was also too big,
+bulky, and the source code was also difficult to understand.
+
+screen also interfered with my use of full-screen applications such as
+emacs and ircII, since screen excessively interprets the stream between
+the program and the attached terminals. dtach does not have a terminal
+emulation layer, and passes the raw output stream of the program to the
+attached terminals. The input processing that dtach performs is
+scanning for the detach character (which signals dtach to detach from
+the program) and processing the suspend key (which tells dtach to
+temporarily suspend itself without affecting the running program), which
+can both be disabled if desired.
+
+Contrary to screen, dtach has minimal features, and is extremely tiny.
+The small size allows it to be more easily audited for bugs and security
+holes, and also allows it to fit in environments where space is limited,
+such as on rescue disks.
+
+dtach has only been tested on the Linux/x86 platform, however it should
+be easily portable to other variants of Unix. It currently assumes that
+the host system uses POSIX termios, and has a working forkpty function
+available.
diff --git a/attach.c b/attach.c
new file mode 100644
index 0000000..c5fb412
--- /dev/null
+++ b/attach.c
@@ -0,0 +1,250 @@
+/*
+    dtach - A simple program that emulates the detach feature of screen.
+    Copyright (C) 2001 Ned T. Crigler
+
+    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
+*/
+#include "detach.h"
+
+#ifndef VDISABLE
+#ifdef _POSIX_VDISABLE
+#define VDISABLE _POSIX_VDISABLE
+#else
+#define VDISABLE 0377
+#endif
+#endif
+
+// The current terminal settings. After coming back from a suspend, we
+// restore this.
+static struct termios cur_term;
+// 1 if the window size changed
+static int win_changed;
+// 1 if we want a redraw
+static int want_redraw;
+
+// This hopefully moves to the bottom of the screen
+#define EOS "\033[999H"
+
+// Restores the original terminal settings.
+static void
+restore_term(void)
+{
+	tcsetattr(0, TCSADRAIN, &orig_term);
+	// Make cursor visible. Assumes VT100.
+	printf("\033[?25h\033[?0c");
+	fflush(stdout);
+}
+
+// Connects to a unix domain socket
+static int
+connect_socket(char *name)
+{
+	int s;
+	struct sockaddr_un sun;
+
+	s = socket(PF_UNIX, SOCK_STREAM, 0);
+	if (s < 0)
+		return -1;
+	sun.sun_family = AF_UNIX;
+	strcpy(sun.sun_path, name);
+	if (connect(s, (struct sockaddr*)&sun, sizeof(sun)) < 0)
+		return -1;
+	return s;
+}
+
+// Signal
+static RETSIGTYPE
+die(int sig)
+{
+	// Print a nice pretty message for some things.
+	if (sig == SIGHUP || sig == SIGINT)
+		printf(EOS "\r\n[detached]\r\n");
+	else
+		printf(EOS "\r\n[got signal %d - dying]\r\n", sig);
+	exit(1);
+}
+
+// Window size change.
+static RETSIGTYPE
+win_change()
+{
+	win_changed = 1;
+}
+
+// Handles input from the keyboard.
+static void
+process_kbd(int s, struct packet *pkt)
+{
+	// Suspend?
+	if (!no_suspend && (pkt->u.buf[0] == cur_term.c_cc[VSUSP]))
+	{
+		// Tell the master that we are suspending.
+		pkt->type = MSG_DETACH;
+		write(s, pkt, sizeof(*pkt));
+
+		// And suspend...
+		tcsetattr(0, TCSADRAIN, &orig_term);
+		kill(getpid(), SIGTSTP);
+		tcsetattr(0, TCSADRAIN, &cur_term);
+
+		// Tell the master that we are returning.
+		pkt->type = MSG_ATTACH;
+		write(s, pkt, sizeof(*pkt));
+
+		// The window size might have changed, and we definately want
+		// a redraw. We don't want to pass the suspend, though.
+		win_changed = 1;
+		want_redraw = 1;
+		return;
+	}
+	// Detach char?
+	else if (pkt->u.buf[0] == detach_char)
+	{
+		printf(EOS "\r\n[detached]\r\n");
+		exit(1);
+	}
+	// Just in case something pukes out.
+	else if (pkt->u.buf[0] == '\f')
+		win_changed = 1;
+
+	// Push it out
+	write(s, pkt, sizeof(*pkt));
+}
+
+int
+attach_main(int noerror)
+{
+	int s;
+	struct pollfd polls[2];
+	struct packet pkt;
+	unsigned char buf[BUFSIZE];
+
+	// The current terminal settings are equal to the original terminal
+	// settings at this point.
+	cur_term = orig_term;
+
+	// Set a trap to restore the terminal when we die.
+	atexit(restore_term);
+
+	// Set some signals.
+	signal(SIGPIPE, SIG_IGN);
+	signal(SIGXFSZ, SIG_IGN);
+	signal(SIGHUP, die);
+	signal(SIGTERM, die);
+	signal(SIGINT, die);
+	signal(SIGQUIT, die);
+	signal(SIGWINCH, win_change);
+
+	// Attempt to open the socket. Don't display an error if noerror is
+	// set.
+	s = connect_socket(sockname);
+	if (s < 0)
+	{
+		if (!noerror)
+			printf("%s: %s: %s\n", progname, sockname,
+				strerror(errno));
+		return 1;
+	}
+
+	// Set raw mode, almost. We allow flow control to work, for instance.
+	cur_term.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL);
+	cur_term.c_oflag &= ~(OPOST);
+	cur_term.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
+	cur_term.c_cflag &= ~(CSIZE|PARENB);
+	cur_term.c_cflag |= CS8;
+	cur_term.c_cc[VLNEXT] = VDISABLE;
+
+	tcsetattr(0, TCSADRAIN, &cur_term);
+
+	// Clear the screen. This assumes VT100.
+	write(1, "\33[H\33[J", 6);
+
+	// Set up the poll structures
+	polls[0].fd = 0;
+	polls[0].events = POLLIN;
+	polls[0].revents = 0;
+	polls[1].fd = s;
+	polls[1].events = POLLIN;
+	polls[1].revents = 0;
+
+	// Send our window size.
+	pkt.type = MSG_WINCH;
+	ioctl(0, TIOCGWINSZ, &pkt.u.ws);
+	write(s, &pkt, sizeof(pkt));
+	// We would like a redraw, too.
+	pkt.type = MSG_REDRAW;
+	write(s, &pkt, sizeof(pkt));
+
+	// Wait for things to happen
+	while (1)
+	{
+		if (poll(polls, 2, -1) < 0)
+		{
+			if (errno != EINTR && errno != EAGAIN)
+			{
+				printf(EOS "\r\n[poll failed]\r\n");
+				exit(1);
+			}
+		}
+		// Pty activity
+		if (polls[1].revents != 0)
+		{
+			int len = read(s, buf, sizeof(buf));
+
+			if (len == 0)
+			{
+				printf(EOS "\r\n[EOF - dtach terminating]"
+					"\r\n");
+				exit(1);
+			}
+			else if (len < 0)
+			{
+				printf(EOS "\r\n[read returned an error]\r\n");
+				exit(1);
+			}
+			// Send the data to the terminal.
+			write(1, buf, len);
+		}
+		// stdin activity
+		if (polls[0].revents != 0)
+		{
+			pkt.type = MSG_PUSH;
+			memset(pkt.u.buf, 0, sizeof(pkt.u.buf));
+			pkt.len = read(0, pkt.u.buf, sizeof(pkt.u.buf));
+
+			if (pkt.len <= 0)
+				exit(1);
+			process_kbd(s, &pkt);
+		}
+		// Window size changed?
+		if (win_changed)
+		{
+			win_changed = 0;
+
+			pkt.type = MSG_WINCH;
+			ioctl(0, TIOCGWINSZ, &pkt.u.ws);
+			write(s, &pkt, sizeof(pkt));
+		}
+		// Want a redraw?
+		if (want_redraw)
+		{
+			want_redraw = 0;
+
+			pkt.type = MSG_REDRAW;
+			write(s, &pkt, sizeof(pkt));
+		}
+	}
+	return 0;
+}
diff --git a/config.h.in b/config.h.in
new file mode 100644
index 0000000..71e0f2d
--- /dev/null
+++ b/config.h.in
@@ -0,0 +1,43 @@
+/* config.h.in.  Generated automatically from configure.in by autoheader.  */
+
+/* Define if you have the `forkpty' function. */
+#undef HAVE_FORKPTY
+
+/* Define if you have the `getrlimit' function. */
+#undef HAVE_GETRLIMIT
+
+/* Define if you have the `util' library (-lutil). */
+#undef HAVE_LIBUTIL
+
+/* Define if you have the <pty.h> header file. */
+#undef HAVE_PTY_H
+
+/* Define if you have the `socket' function. */
+#undef HAVE_SOCKET
+
+/* Define if you have the `strerror' function. */
+#undef HAVE_STRERROR
+
+/* Define if you have the <sys/ioctl.h> header file. */
+#undef HAVE_SYS_IOCTL_H
+
+/* Define if you have the <sys/resource.h> header file. */
+#undef HAVE_SYS_RESOURCE_H
+
+/* Define if you have the <termios.h> header file. */
+#undef HAVE_TERMIOS_H
+
+/* Define if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define if you have the <util.h> header file. */
+#undef HAVE_UTIL_H
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#undef RETSIGTYPE
+
+/* Define if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Define to `int' if <sys/types.h> does not define. */
+#undef pid_t
diff --git a/configure b/configure
new file mode 100755
index 0000000..056f407
--- /dev/null
+++ b/configure
@@ -0,0 +1,1715 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated automatically using Autoconf version 2.14.1 
+# Copyright (C) 1992, 93, 94, 95, 96, 98, 1999 Free Software Foundation, Inc.
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+
+# Defaults:
+ac_arg_with_help=
+ac_arg_enable_help=
+ac_arg_var_help=
+ac_default_prefix=/usr/local
+# Any additions from configure.in:
+ac_arg_var_help="$ac_arg_var_help
+  CFLAGS      Extra flags for the C compiler"
+
+# Initialize some variables set by options.
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+build=NONE
+cache_file=./config.cache
+exec_prefix=NONE
+host=NONE
+no_create=
+nonopt=NONE
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+target=NONE
+verbose=
+x_includes=NONE
+x_libraries=NONE
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datadir='${prefix}/share'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+libdir='${exec_prefix}/lib'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+infodir='${prefix}/info'
+mandir='${prefix}/man'
+
+# Initialize some other variables.
+subdirs=
+MFLAGS= MAKEFLAGS=
+SHELL=${CONFIG_SHELL-/bin/sh}
+# Maximum number of lines to put in a shell here document.
+: ${ac_max_here_lines=12}
+# Sed expression to map a string onto a valid sh and CPP variable names.
+ac_tr_sh='sed -e y%*+%pp%;s%[^a-zA-Z0-9_]%_%g'
+ac_tr_cpp='sed -e y%*abcdefghijklmnopqrstuvwxyz%PABCDEFGHIJKLMNOPQRSTUVWXYZ%;s%[^A-Z0-9_]%_%g'
+
+ac_prev=
+for ac_option
+do
+
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval "$ac_prev=\$ac_option"
+    ac_prev=
+    continue
+  fi
+
+  case "$ac_option" in
+  -*=*) ac_optarg=`echo "$ac_option" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
+  *) ac_optarg= ;;
+  esac
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case "$ac_option" in
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir="$ac_optarg" ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build="$ac_optarg" ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file="$ac_optarg" ;;
+
+  -datadir | --datadir | --datadi | --datad | --data | --dat | --da)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=* | --data=* | --dat=* \
+  | --da=*)
+    datadir="$ac_optarg" ;;
+
+  -disable-* | --disable-*)
+    ac_feature=`echo "$ac_option"|sed -e 's/-*disable-//'`
+    # Reject names that are not valid shell variable names.
+    if echo "$ac_feature" | grep '[^-a-zA-Z0-9_]' >/dev/null 2>&1; then
+      { echo "configure: error: $ac_feature: invalid feature name" 1>&2; exit 1; }
+    fi
+    ac_feature=`echo $ac_feature| sed 's/-/_/g'`
+    eval "enable_${ac_feature}=no" ;;
+
+  -enable-* | --enable-*)
+    ac_feature=`echo "$ac_option"|sed -e 's/-*enable-//' -e 's/=.*//'`
+    # Reject names that are not valid shell variable names.
+    if echo "$ac_feature" | grep '[^-a-zA-Z0-9_]' >/dev/null 2>&1; then
+      { echo "configure: error: $ac_feature: invalid feature name" 1>&2; exit 1; }
+    fi
+    ac_feature=`echo $ac_feature| sed 's/-/_/g'`
+    case "$ac_option" in
+      *=*) ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "enable_${ac_feature}='$ac_optarg'" ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix="$ac_optarg" ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he)
+    # Omit some internal or obsolete options to make the list less imposing.
+    # This message is too long to be a string in the A/UX 3.1 sh.
+    cat << \EOF
+`configure' configures software source code packages to adapt to many kinds
+of systems.
+
+Usage: configure [OPTION]... [VAR=VALUE]... [HOST]
+
+To safely assign special values to environment variables (e.g., CC,
+CFLAGS...), give to `configure' the definition as VAR=VALUE.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  --cache-file=FILE       cache test results in FILE
+  --help                  print this message
+  --no-create             do not create output files
+  --quiet, --silent       do not print \`checking...' messages
+  --version               print the version of autoconf that created configure
+
+Directory and file names:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+                          [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+                          [same as prefix]
+  --bindir=DIR            user executables in DIR [EPREFIX/bin]
+  --sbindir=DIR           system admin executables in DIR [EPREFIX/sbin]
+  --libexecdir=DIR        program executables in DIR [EPREFIX/libexec]
+  --datadir=DIR           read-only architecture-independent data in DIR
+                          [PREFIX/share]
+  --sysconfdir=DIR        read-only single-machine data in DIR [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data in DIR
+                          [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data in DIR [PREFIX/var]
+  --libdir=DIR            object code libraries in DIR [EPREFIX/lib]
+  --includedir=DIR        C header files in DIR [PREFIX/include]
+  --oldincludedir=DIR     C header files for non-gcc in DIR [/usr/include]
+  --infodir=DIR           info documentation in DIR [PREFIX/info]
+  --mandir=DIR            man documentation in DIR [PREFIX/man]
+  --srcdir=DIR            find the sources in DIR [configure dir or ..]
+
+Program names:
+  --program-prefix=PREFIX prepend PREFIX to installed program names
+  --program-suffix=SUFFIX append SUFFIX to installed program names
+  --program-transform-name=PROGRAM
+                          run sed PROGRAM on installed program names
+
+EOF
+    cat << \EOF
+Host type:
+  --build=BUILD           configure for building on BUILD [BUILD=HOST]
+  --host=HOST             configure for HOST [guessed]
+  --target=TARGET         configure for TARGET [TARGET=HOST]
+
+Features and packages:
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
+  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+  --x-includes=DIR        X include files are in DIR
+  --x-libraries=DIR       X library files are in DIR
+EOF
+    test -n "$ac_arg_enable_help" && echo "
+--enable options recognized:$ac_arg_enable_help"
+    test -n "$ac_arg_with_help" && echo "
+--with options recognized:$ac_arg_with_help"
+    test -n "$ac_arg_var_help" && echo "
+Some of the influent environment variables:$ac_arg_var_help"
+    exit 0 ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host="$ac_optarg" ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir="$ac_optarg" ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir="$ac_optarg" ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir="$ac_optarg" ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir="$ac_optarg" ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst \
+  | --locals | --local | --loca | --loc | --lo)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* \
+  | --locals=* | --local=* | --loca=* | --loc=* | --lo=*)
+    localstatedir="$ac_optarg" ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir="$ac_optarg" ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir="$ac_optarg" ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix="$ac_optarg" ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix="$ac_optarg" ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix="$ac_optarg" ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name="$ac_optarg" ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir="$ac_optarg" ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir="$ac_optarg" ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site="$ac_optarg" ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir="$ac_optarg" ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir="$ac_optarg" ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target="$ac_optarg" ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers)
+    echo "configure generated by autoconf version 2.14.1"
+    exit 0 ;;
+
+  -with-* | --with-*)
+    ac_package=`echo "$ac_option"|sed -e 's/-*with-//' -e 's/=.*//'`
+    # Reject names that are not valid shell variable names.
+    if echo "$ac_feature" | grep '[^-a-zA-Z0-9_]' >/dev/null 2>&1; then
+      { echo "configure: error: $ac_package: invalid package name" 1>&2; exit 1; }
+    fi
+    ac_package=`echo $ac_package| sed 's/-/_/g'`
+    case "$ac_option" in
+      *=*) ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "with_${ac_package}='$ac_optarg'" ;;
+
+  -without-* | --without-*)
+    ac_package=`echo "$ac_option"|sed -e 's/-*without-//'`
+    # Reject names that are not valid shell variable names.
+    if echo "$ac_feature" | grep '[^-a-zA-Z0-9_]' >/dev/null 2>&1; then
+      { echo "configure: error: $ac_package: invalid package name" 1>&2; exit 1; }
+    fi
+    ac_package=`echo $ac_package| sed 's/-/_/g'`
+    eval "with_${ac_package}=no" ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes="$ac_optarg" ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries="$ac_optarg" ;;
+
+  -*) { echo "configure: error: $ac_option: invalid option; use --help to show usage" 1>&2; exit 1; }
+    ;;
+
+  *=*)
+    ac_envvar=`echo $ac_option|sed -e 's/=.*//'`
+    # Reject names that are not valid shell variable names.
+    if test -n "`echo $ac_envvar| sed 's/[_a-zA-Z0-9]//g'`"; then
+      { echo "configure: error: $ac_envvar: invalid variable name" 1>&2; exit 1; }
+    fi
+    eval "${ac_envvar}='$ac_optarg'"
+    export $ac_envvar ;;
+
+  *)
+    if echo "$ac_feature" | grep '[^-a-zA-Z0-9.]' >/dev/null 2>&1; then
+      echo "configure: warning: $ac_option: invalid host type" 1>&2
+    fi
+    if test "x$nonopt" != xNONE; then
+      { echo "configure: error: can only configure for one host and one target at a time" 1>&2; exit 1; }
+    fi
+    nonopt="$ac_option"
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  { echo "configure: error: missing argument to --\`echo $ac_prev | sed 's/_/-/g'\`" 1>&2; exit 1; }
+fi
+
+trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15
+
+# File descriptor usage:
+# 0 standard input
+# 1 file creation
+# 2 errors and warnings
+# 3 some systems may open it to /dev/tty
+# 4 used on the Kubota Titan
+# 6 checking for... messages and results
+# 5 compiler messages saved in config.log
+if test "$silent" = yes; then
+  exec 6>/dev/null
+else
+  exec 6>&1
+fi
+exec 5>./config.log
+
+echo "\
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+" 1>&5
+
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Also quote any args containing shell meta-characters.
+ac_configure_args=
+for ac_arg
+do
+  case "$ac_arg" in
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c) ;;
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r) ;;
+  *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?]*)
+  ac_arg=`echo "$ac_arg"|sed "s/'/'\\\\\\\\''/g"`
+  ac_configure_args="$ac_configure_args '$ac_arg'" ;;
+  *) ac_configure_args="$ac_configure_args $ac_arg" ;;
+  esac
+done
+
+# NLS nuisances.
+# Only set these to C if already set.  These must not be set unconditionally
+# because not all systems understand e.g. LANG=C (notably SCO).
+# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'!
+# Non-C LC_CTYPE values break the ctype check.
+if test "${LANG+set}"   = set; then LANG=C;   export LANG;   fi
+if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
+if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
+if test "${LC_CTYPE+set}"    = set; then LC_CTYPE=C;    export LC_CTYPE;    fi
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -rf conftest* confdefs.h
+# AIX cpp loses on an empty file, so make sure it contains at least a newline.
+echo > confdefs.h
+
+# A filename unique to this package, relative to the directory that
+# configure is in, which we can look for to find out if srcdir is correct.
+ac_unique_file=main.c
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then its parent.
+  ac_prog=$0
+  ac_confdir=`echo "$ac_prog"|sed 's%/[^/][^/]*$%%'`
+  test "x$ac_confdir" = "x$ac_prog" && ac_confdir=.
+  srcdir=$ac_confdir
+  if test ! -r $srcdir/$ac_unique_file; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r $srcdir/$ac_unique_file; then
+  if test "$ac_srcdir_defaulted" = yes; then
+    { echo "configure: error: cannot find sources in $ac_confdir or .." 1>&2; exit 1; }
+  else
+    { echo "configure: error: cannot find sources in $srcdir" 1>&2; exit 1; }
+  fi
+fi
+srcdir=`echo "${srcdir}" | sed 's%\([^/]\)/*$%\1%'`
+
+# Prefer explicitly selected file to automatically selected ones.
+if test -z "$CONFIG_SITE"; then
+  if test "x$prefix" != xNONE; then
+    CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
+  else
+    CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
+  fi
+fi
+for ac_site_file in $CONFIG_SITE; do
+  if test -r "$ac_site_file"; then
+    echo "loading site script $ac_site_file"
+    . "$ac_site_file"
+  fi
+done
+
+if test -r "$cache_file"; then
+  echo "loading cache $cache_file"
+      test -f "$cache_file" && . $cache_file
+else
+  echo "creating cache $cache_file"
+  > $cache_file
+fi
+
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
+
+ac_exeext=
+ac_objext=o
+if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
+  # Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu.
+  if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then
+    ac_n= ac_c='
+' ac_t='	'
+  else
+    ac_n=-n ac_c= ac_t=
+  fi
+else
+  ac_n= ac_c='\c' ac_t=
+fi
+
+
+
+case "${CFLAGS+set} $ac_configure_args" in
+ *" CFLAGS="* );;
+ "set "*) ac_configure_args="CFLAGS='$CFLAGS' $ac_configure_args";;
+esac
+
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+echo $ac_n "checking for $ac_word... $ac_c" 1>&6
+echo "configure:566: checking for $ac_word" 1>&5
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
+  ac_dummy="$PATH"
+  for ac_dir in $ac_dummy; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_prog_CC="gcc"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+fi
+fi
+CC="$ac_cv_prog_CC"
+if test -n "$CC"; then
+  echo "$ac_t""$CC" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+  if test -z "$CC"; then
+    # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+echo $ac_n "checking for $ac_word... $ac_c" 1>&6
+echo "configure:596: checking for $ac_word" 1>&5
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
+  ac_prog_rejected=no
+  ac_dummy="$PATH"
+  for ac_dir in $ac_dummy; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      if test "$ac_dir/$ac_word" = "/usr/ucb/cc"; then
+        ac_prog_rejected=yes
+	continue
+      fi
+      ac_cv_prog_CC="cc"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# -gt 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    set dummy "$ac_dir/$ac_word" "$@"
+    shift
+    ac_cv_prog_CC="$@"
+  fi
+fi
+fi
+fi
+CC="$ac_cv_prog_CC"
+if test -n "$CC"; then
+  echo "$ac_t""$CC" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+    if test -z "$CC"; then
+      for ac_prog in cl
+do
+# Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+echo $ac_n "checking for $ac_word... $ac_c" 1>&6
+echo "configure:647: checking for $ac_word" 1>&5
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
+  ac_dummy="$PATH"
+  for ac_dir in $ac_dummy; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_prog_CC="$ac_prog"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+fi
+fi
+CC="$ac_cv_prog_CC"
+if test -n "$CC"; then
+  echo "$ac_t""$CC" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+test -n "$CC" && break
+done
+
+    fi
+  fi
+
+
+test -z "$CC" && { echo "configure: error: no acceptable cc found in \$PATH" 1>&2; exit 1; }
+
+echo $ac_n "checking whether the C compiler ($CC $CFLAGS $CPPFLAGS $LDFLAGS) works... $ac_c" 1>&6
+echo "configure:683: checking whether the C compiler ($CC $CFLAGS $CPPFLAGS $LDFLAGS) works" 1>&5
+
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
+
+cat > conftest.$ac_ext << EOF
+
+#line 694 "configure"
+#include "confdefs.h"
+
+int main(){return(0);}
+EOF
+if { (eval echo configure:699: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+  ac_cv_prog_cc_works=yes
+  # If we can't run a trivial program, we are probably using a cross compiler.
+  if (./conftest; exit) 2>/dev/null; then
+    ac_cv_prog_cc_cross=no
+  else
+    ac_cv_prog_cc_cross=yes
+  fi
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  ac_cv_prog_cc_works=no
+fi
+rm -fr conftest*
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
+
+echo "$ac_t""$ac_cv_prog_cc_works" 1>&6
+if test $ac_cv_prog_cc_works = no; then
+  { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
+fi
+echo $ac_n "checking whether the C compiler ($CC $CFLAGS $CPPFLAGS $LDFLAGS) is a cross-compiler... $ac_c" 1>&6
+echo "configure:725: checking whether the C compiler ($CC $CFLAGS $CPPFLAGS $LDFLAGS) is a cross-compiler" 1>&5
+echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
+cross_compiling=$ac_cv_prog_cc_cross
+
+echo $ac_n "checking whether we are using GNU C... $ac_c" 1>&6
+echo "configure:730: checking whether we are using GNU C" 1>&5
+if test "${ac_cv_prog_gcc+set}" = set; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.c <<EOF
+#ifdef __GNUC__
+  yes;
+#endif
+EOF
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:739: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+  ac_cv_prog_gcc=yes
+else
+  ac_cv_prog_gcc=no
+fi
+fi
+echo "$ac_t""$ac_cv_prog_gcc" 1>&6
+
+if test $ac_cv_prog_gcc = yes; then
+  GCC=yes
+else
+  GCC=
+fi
+
+ac_test_CFLAGS="${CFLAGS+set}"
+ac_save_CFLAGS="$CFLAGS"
+CFLAGS=
+echo $ac_n "checking whether ${CC-cc} accepts -g... $ac_c" 1>&6
+echo "configure:757: checking whether ${CC-cc} accepts -g" 1>&5
+if test "${ac_cv_prog_cc_g+set}" = set; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  echo 'void f(){}' > conftest.c
+if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then
+  ac_cv_prog_cc_g=yes
+else
+  ac_cv_prog_cc_g=no
+fi
+rm -f conftest*
+
+fi
+echo "$ac_t""$ac_cv_prog_cc_g" 1>&6
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS="$ac_save_CFLAGS"
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+
+
+echo $ac_n "checking for forkpty in -lutil... $ac_c" 1>&6
+echo "configure:789: checking for forkpty in -lutil" 1>&5
+if test "${ac_cv_lib_util_forkpty+set}" = set; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-lutil  $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 796 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char forkpty();
+
+int main() {
+forkpty()
+; return 0; }
+EOF
+if { (eval echo configure:807: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+  rm -rf conftest*
+  ac_cv_lib_util_forkpty=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_lib_util_forkpty=no
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+fi
+echo "$ac_t""$ac_cv_lib_util_forkpty" 1>&6
+if test $ac_cv_lib_util_forkpty = yes; then
+  cat >> confdefs.h <<EOF
+#define HAVE_LIBUTIL 1
+EOF
+
+  LIBS="-lutil $LIBS"
+
+fi
+
+
+echo $ac_n "checking how to run the C preprocessor... $ac_c" 1>&6
+echo "configure:831: checking how to run the C preprocessor" 1>&5
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+if test "${ac_cv_prog_CPP+set}" = set; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+    # This must be in double quotes, not single quotes, because CPP may get
+  # substituted into the Makefile and "${CC-cc}" will confuse make.
+  CPP="${CC-cc} -E"
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp.
+  cat > conftest.$ac_ext <<EOF
+#line 846 "configure"
+#include "confdefs.h"
+#include <assert.h>
+Syntax Error
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:852: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  :
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  CPP="${CC-cc} -E -traditional-cpp"
+  cat > conftest.$ac_ext <<EOF
+#line 863 "configure"
+#include "confdefs.h"
+#include <assert.h>
+Syntax Error
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:869: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  :
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  CPP="${CC-cc} -nologo -E"
+  cat > conftest.$ac_ext <<EOF
+#line 880 "configure"
+#include "confdefs.h"
+#include <assert.h>
+Syntax Error
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:886: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  :
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  CPP=/lib/cpp
+fi
+rm -f conftest*
+fi
+rm -f conftest*
+fi
+rm -f conftest*
+  ac_cv_prog_CPP="$CPP"
+fi
+  CPP="$ac_cv_prog_CPP"
+else
+  ac_cv_prog_CPP="$CPP"
+fi
+echo "$ac_t""$CPP" 1>&6
+
+echo $ac_n "checking for ANSI C header files... $ac_c" 1>&6
+echo "configure:911: checking for ANSI C header files" 1>&5
+if test "${ac_cv_header_stdc+set}" = set; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 916 "configure"
+#include "confdefs.h"
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:924: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  rm -rf conftest*
+  ac_cv_header_stdc=yes
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+cat > conftest.$ac_ext <<EOF
+#line 941 "configure"
+#include "confdefs.h"
+#include <string.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "memchr" >/dev/null 2>&1; then
+  :
+else
+  rm -rf conftest*
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+cat > conftest.$ac_ext <<EOF
+#line 959 "configure"
+#include "confdefs.h"
+#include <stdlib.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "free" >/dev/null 2>&1; then
+  :
+else
+  rm -rf conftest*
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+if test "$cross_compiling" = yes; then
+  :
+else
+  cat > conftest.$ac_ext <<EOF
+#line 980 "configure"
+#include "confdefs.h"
+#include <ctype.h>
+#if ((' ' & 0x0FF) == 0x020)
+#define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+#define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+#define ISLOWER(c) (('a' <= (c) && (c) <= 'i') \
+ || ('j' <= (c) && (c) <= 'r') \
+ || ('s' <= (c) && (c) <= 'z'))
+#define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int main () { int i; for (i = 0; i < 256; i++)
+if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
+exit (0); }
+
+EOF
+if { (eval echo configure:998: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+  :
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  ac_cv_header_stdc=no
+fi
+rm -fr conftest*
+fi
+
+fi
+fi
+echo "$ac_t""$ac_cv_header_stdc" 1>&6
+if test $ac_cv_header_stdc = yes; then
+  cat >> confdefs.h <<\EOF
+#define STDC_HEADERS 1
+EOF
+
+fi
+
+for ac_header in sys/ioctl.h sys/resource.h pty.h termios.h util.h unistd.h
+do
+ac_ac_Header=`echo "ac_cv_header_$ac_header" | $ac_tr_sh`
+echo $ac_n "checking for $ac_header... $ac_c" 1>&6
+echo "configure:1024: checking for $ac_header" 1>&5
+if eval "test \"\${$ac_ac_Header+set}\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1029 "configure"
+#include "confdefs.h"
+#include <$ac_header>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:1034: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  rm -rf conftest*
+  eval "$ac_ac_Header=yes"
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "$ac_ac_Header=no"
+fi
+rm -f conftest*
+fi
+echo "$ac_t""`eval echo '${'$ac_ac_Header'}'`" 1>&6
+if test `eval echo '${'$ac_ac_Header'}'` = yes; then
+  cat >> confdefs.h <<EOF
+#define `echo "HAVE_$ac_header" | $ac_tr_cpp` 1
+EOF
+ 
+fi
+done
+
+
+echo $ac_n "checking for pid_t... $ac_c" 1>&6
+echo "configure:1059: checking for pid_t" 1>&5
+if test "${ac_cv_type_pid_t+set}" = set; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1064 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+#include <sys/types.h>
+#if STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#endif
+
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "(^|[^a-zA-Z_0-9])pid_t[^a-zA-Z_0-9]" >/dev/null 2>&1; then
+  rm -rf conftest*
+  ac_cv_type_pid_t=yes
+else
+  rm -rf conftest*
+  ac_cv_type_pid_t=no
+fi
+rm -f conftest*
+
+fi
+echo "$ac_t""$ac_cv_type_pid_t" 1>&6
+if test $ac_cv_type_pid_t = yes; then
+  :
+else
+  cat >> confdefs.h <<EOF
+#define pid_t int
+EOF
+
+fi
+
+
+if test $ac_cv_prog_gcc = yes; then
+    echo $ac_n "checking whether ${CC-cc} needs -traditional... $ac_c" 1>&6
+echo "configure:1098: checking whether ${CC-cc} needs -traditional" 1>&5
+if test "${ac_cv_prog_gcc_traditional+set}" = set; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+    ac_pattern="Autoconf.*'x'"
+  cat > conftest.$ac_ext <<EOF
+#line 1104 "configure"
+#include "confdefs.h"
+#include <sgtty.h>
+Autoconf TIOCGETP
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "$ac_pattern" >/dev/null 2>&1; then
+  rm -rf conftest*
+  ac_cv_prog_gcc_traditional=yes
+else
+  rm -rf conftest*
+  ac_cv_prog_gcc_traditional=no
+fi
+rm -f conftest*
+
+
+  if test $ac_cv_prog_gcc_traditional = no; then
+    cat > conftest.$ac_ext <<EOF
+#line 1122 "configure"
+#include "confdefs.h"
+#include <termio.h>
+Autoconf TCGETA
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "$ac_pattern" >/dev/null 2>&1; then
+  rm -rf conftest*
+  ac_cv_prog_gcc_traditional=yes
+fi
+rm -f conftest*
+
+  fi
+fi
+echo "$ac_t""$ac_cv_prog_gcc_traditional" 1>&6
+  if test $ac_cv_prog_gcc_traditional = yes; then
+    CC="$CC -traditional"
+  fi
+fi
+
+echo $ac_n "checking return type of signal handlers... $ac_c" 1>&6
+echo "configure:1143: checking return type of signal handlers" 1>&5
+if test "${ac_cv_type_signal+set}" = set; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1148 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <signal.h>
+#ifdef signal
+#undef signal
+#endif
+#ifdef __cplusplus
+extern "C" void (*signal (int, void (*)(int)))(int);
+#else
+void (*signal ()) ();
+#endif
+
+int main() {
+int i;
+; return 0; }
+EOF
+if { (eval echo configure:1165: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_type_signal=void
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_type_signal=int
+fi
+rm -f conftest*
+fi
+echo "$ac_t""$ac_cv_type_signal" 1>&6
+cat >> confdefs.h <<EOF
+#define RETSIGTYPE $ac_cv_type_signal
+EOF
+
+
+for ac_func in socket strerror forkpty getrlimit
+do
+ac_ac_var=`echo "ac_cv_func_$ac_func" | $ac_tr_sh`
+echo $ac_n "checking for $ac_func... $ac_c" 1>&6
+echo "configure:1186: checking for $ac_func" 1>&5
+if eval "test \"\${$ac_ac_var+set}\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1191 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func(); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char $ac_func();
+char (*f)();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+f = $ac_func;
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:1215: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+  rm -rf conftest*
+  eval "$ac_ac_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "$ac_ac_var=no"
+fi
+rm -f conftest*
+fi
+echo "$ac_t""`eval echo '${'$ac_ac_var'}'`" 1>&6
+if test `eval echo '${'$ac_ac_var'}'` = yes; then
+  cat >> confdefs.h <<EOF
+#define `echo "HAVE_$ac_func" | $ac_tr_cpp` 1
+EOF
+ 
+fi
+done
+
+
+
+trap '' 1 2 15
+cat > confcache <<\EOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs.  It is not useful on other systems.
+# If it contains results you don't want to keep, you may remove or edit it.
+#
+# By default, configure uses ./config.cache as the cache file,
+# creating it if it does not exist already.  You can give configure
+# the --cache-file=FILE option to use a different cache file; that is
+# what configure does when it calls configure scripts in
+# subdirectories, so they share the cache.
+# Giving --cache-file=/dev/null disables caching, for debugging configure.
+# config.status only pays attention to the cache file if you give it the
+# --recheck option to rerun configure.
+#
+EOF
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, don't put newlines in cache variables' values.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(set) 2>&1 |
+  case `(ac_space=' '; set | grep ac_space) 2>&1` in
+  *ac_space=\ *)
+    # `set' does not quote correctly, so add quotes (double-quote substitution
+    # turns \\\\ into \\, and sed turns \\ into \).
+    sed -n \
+      -e "s/'/'\\\\''/g" \
+      -e "s/^\\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\\)=\\(.*\\)/\\1=\${\\1='\\2'}/p"
+    ;;
+  *)
+    # `set' quotes correctly as required by POSIX, so do not add quotes.
+    sed -n -e 's/^\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\)=\(.*\)/\1=${\1=\2}/p'
+    ;;
+  esac >> confcache
+if cmp -s $cache_file confcache; then
+  :
+else
+  if test -w $cache_file; then
+    echo "updating cache $cache_file"
+    cat confcache > $cache_file
+  else
+    echo "not updating unwritable cache $cache_file"
+  fi
+fi
+rm -f confcache
+
+trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+# Any assignment to VPATH causes Sun make to only execute
+# the first set of double-colon rules, so remove it if not needed.
+# If there is a colon in the path, we need to keep it.
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[ 	]*VPATH[ 	]*=[^:]*$/d'
+fi
+
+trap 'rm -f $CONFIG_STATUS conftest*; exit 1' 1 2 15
+
+DEFS=-DHAVE_CONFIG_H
+
+# Without the "./", some shells look in PATH for config.status.
+: ${CONFIG_STATUS=./config.status}
+
+echo creating $CONFIG_STATUS
+rm -f $CONFIG_STATUS
+cat > $CONFIG_STATUS <<EOF
+#! /bin/sh
+# Generated automatically by configure.
+# Run this file to recreate the current configuration.
+# This directory was configured as follows,
+# on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+#
+# $0 $ac_configure_args
+#
+# Compiler output produced by configure, useful for debugging
+# configure, is in ./config.log if it exists.
+
+# Files that config.status was made for.
+config_files="\\
+    Makefile"
+config_headers="\\
+    config.h"
+config_links="\\
+    :"
+
+ac_cs_usage="\\
+\\\`$CONFIG_STATUS' instantiates files from templates according to the
+current configuration.
+
+Usage: $CONFIG_STATUS [OPTIONS] FILE...
+
+  --recheck    Update $CONFIG_STATUS by reconfiguring in the same conditions
+  --version    Print the version of Autoconf and exit
+  --help       Display this help and exit
+
+Files to instantiate:
+  Configuration files:
+\$config_files
+  Configuration headers:
+\$config_headers
+  Links to install:
+\$config_links
+
+Report bugs to <bug-autoconf@gnu.org>."
+
+ac_cs_version="\\
+$CONFIG_STATUS generated by autoconf version 2.14.1.
+Configured on host `(hostname || uname -n) 2>/dev/null | sed 1q` by running
+  $0 $ac_configure_args"
+
+# Root of the tmp file names.  Use pid to allow concurrent executions.
+ac_cs_root=cs\$\$
+ac_given_srcdir=$srcdir
+
+for ac_option
+do
+  case "\$ac_option" in
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    echo "running \${CONFIG_SHELL-/bin/sh} $0 `echo "$ac_configure_args" | sed 's/[\\"\`\$]/\\\\&/g'` --no-create --no-recursion"
+    exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;;
+  -version | --version | --versio | --versi | --vers | --ver | --ve | --v)
+    echo "\$ac_cs_version"; exit 0 ;;
+  -help | --help | --hel | --he | --h)
+    echo "\$ac_cs_usage"; exit 0 ;;
+  *) # Find out the files to process.
+    for ac_file in \$config_files
+    do
+      case \$ac_file in
+        \$ac_option | \$ac_option:* )
+          CONFIG_FILES="\$CONFIG_FILES \$ac_file"
+          ac_option=
+          break ;;
+      esac
+    done
+    test -z "\$ac_option" && continue
+    for ac_file in \$config_headers
+    do
+      case \$ac_file in
+        \$ac_option | \$ac_option:* )
+          CONFIG_HEADERS="\$CONFIG_HEADERS \$ac_file"
+          ac_option=
+          break ;;
+      esac
+    done
+    test -z "\$ac_option" && continue
+    for ac_file in \$config_links
+    do
+      case \$ac_file in
+        \$ac_option | \$ac_option:* )
+          CONFIG_LINKS="\$CONFIG_LINKS \$ac_file"
+          ac_option=
+          break ;;
+      esac
+    done
+    test -z "\$ac_option" && continue
+    echo "$CONFIG_STATUS: invalid argument: \$ac_option"; exit 1
+   ;;
+  esac
+done
+
+EOF
+
+cat >> $CONFIG_STATUS <<EOF
+# If there were arguments, don't assign a default value.
+if test \$# = 0; then
+  : \${CONFIG_FILES="\$config_files"}
+  : \${CONFIG_HEADERS="\$config_headers"}
+  : \${CONFIG_LINKS="\$config_links"}
+fi
+
+# Remove all the CONFIG_FILES, and trap to remove the temp files.
+rm -fr \`echo "\$CONFIG_FILES" | sed "s/:[^ ]*//g"\`
+trap 'rm -fr \$ac_cs_root*; exit 1' 1 2 15
+
+EOF
+
+
+cat >>$CONFIG_STATUS <<EOF
+# Protect against being on the right side of a sed subst in config.status.
+sed 's/%@/@@/; s/@%/@@/; s/%;t t\$/@;t t/; /@;t t\$/s/[\\\\&%]/\\\\&/g;
+ s/@@/%@/; s/@@/@%/; s/@;t t\$/%;t t/' > \$ac_cs_root.subs <<\\CEOF
+s%@SHELL@%$SHELL%;t t
+s%@CFLAGS@%$CFLAGS%;t t
+s%@CPPFLAGS@%$CPPFLAGS%;t t
+s%@CXXFLAGS@%$CXXFLAGS%;t t
+s%@FFLAGS@%$FFLAGS%;t t
+s%@DEFS@%$DEFS%;t t
+s%@LDFLAGS@%$LDFLAGS%;t t
+s%@LIBS@%$LIBS%;t t
+s%@exec_prefix@%$exec_prefix%;t t
+s%@prefix@%$prefix%;t t
+s%@program_transform_name@%$program_transform_name%;t t
+s%@bindir@%$bindir%;t t
+s%@sbindir@%$sbindir%;t t
+s%@libexecdir@%$libexecdir%;t t
+s%@datadir@%$datadir%;t t
+s%@sysconfdir@%$sysconfdir%;t t
+s%@sharedstatedir@%$sharedstatedir%;t t
+s%@localstatedir@%$localstatedir%;t t
+s%@libdir@%$libdir%;t t
+s%@includedir@%$includedir%;t t
+s%@oldincludedir@%$oldincludedir%;t t
+s%@infodir@%$infodir%;t t
+s%@mandir@%$mandir%;t t
+s%@CC@%$CC%;t t
+s%@CPP@%$CPP%;t t
+CEOF
+
+EOF
+
+cat >> $CONFIG_STATUS <<\EOF
+# Split the substitutions into bite-sized pieces for seds with
+# small command number limits, like on Digital OSF/1 and HP-UX.
+ac_max_sed_lines=48
+ac_sed_frag=1 # Number of current file.
+ac_beg=1 # First line for current file.
+ac_end=$ac_max_sed_lines # Line after last line for current file.
+ac_more_lines=:
+ac_sed_cmds=""
+while $ac_more_lines; do
+  if test $ac_beg -gt 1; then
+    sed "1,${ac_beg}d; ${ac_end}q" $ac_cs_root.subs > $ac_cs_root.sfrag
+  else
+    sed "${ac_end}q" $ac_cs_root.subs > $ac_cs_root.sfrag
+  fi
+  if test ! -s $ac_cs_root.sfrag; then
+    ac_more_lines=false
+    rm -f $ac_cs_root.sfrag
+  else
+    # The purpose of the label and of the branching condition is to
+    # speed up the sed processing (if there are no `@' at all, there
+    # is no need to browse any of the substitutions).
+    # These are the two extra sed commands mentioned above.
+    (echo ':t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b' && cat $ac_cs_root.sfrag) > $ac_cs_root.s$ac_sed_frag
+    if test -z "$ac_sed_cmds"; then
+      ac_sed_cmds="sed -f $ac_cs_root.s$ac_sed_frag"
+    else
+      ac_sed_cmds="$ac_sed_cmds | sed -f $ac_cs_root.s$ac_sed_frag"
+    fi
+    ac_sed_frag=`expr $ac_sed_frag + 1`
+    ac_beg=$ac_end
+    ac_end=`expr $ac_end + $ac_max_sed_lines`
+  fi
+done
+if test -z "$ac_sed_cmds"; then
+  ac_sed_cmds=cat
+fi
+
+EOF
+
+cat >> $CONFIG_STATUS <<\EOF
+for ac_file in .. $CONFIG_FILES; do if test "x$ac_file" != x..; then
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case "$ac_file" in
+  *:*) ac_file_in=`echo "$ac_file"|sed 's%[^:]*:%%'`
+       ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
+  *) ac_file_in="${ac_file}.in" ;;
+  esac
+
+  # Adjust a relative srcdir, top_srcdir, and INSTALL for subdirectories.
+
+  # Remove last slash and all that follows it.  Not all systems have dirname.
+  ac_dir=`echo $ac_file|sed 's%/[^/][^/]*$%%'`
+  if test "$ac_dir" != "$ac_file" && test "$ac_dir" != .; then
+    # The file is in a subdirectory.
+    test ! -d "$ac_dir" && mkdir "$ac_dir"
+    ac_dir_suffix="/`echo $ac_dir|sed 's%^\./%%'`"
+    # A "../" for each directory in $ac_dir_suffix.
+    ac_dots=`echo $ac_dir_suffix|sed 's%/[^/]*%../%g'`
+  else
+    ac_dir_suffix= ac_dots=
+  fi
+
+  case "$ac_given_srcdir" in
+  .)  srcdir=.
+      if test -z "$ac_dots"; then top_srcdir=.
+      else top_srcdir=`echo $ac_dots|sed 's%/$%%'`; fi ;;
+  /*) srcdir="$ac_given_srcdir$ac_dir_suffix"; top_srcdir="$ac_given_srcdir" ;;
+  *) # Relative path.
+    srcdir="$ac_dots$ac_given_srcdir$ac_dir_suffix"
+    top_srcdir="$ac_dots$ac_given_srcdir" ;;
+  esac
+
+
+  echo creating "$ac_file"
+  rm -f "$ac_file"
+  configure_input="Generated automatically from `echo $ac_file_in|sed 's%.*/%%'` by configure."
+  case "$ac_file" in
+  *[Mm]akefile*) ac_comsub="1i\\
+# $configure_input" ;;
+  *) ac_comsub= ;;
+  esac
+
+# Don't redirect the output to AC_FILE directly: use `mv' so that updating
+# is atomic, and doesn't need trapping.
+  ac_file_inputs=`echo $ac_file_in | sed -e "s%^%$ac_given_srcdir/%" -e "s%:% $ac_given_srcdir/%g"`
+EOF
+cat >>$CONFIG_STATUS <<EOF
+  sed -e "$ac_comsub
+$ac_vpsub
+$extrasub
+EOF
+cat >>$CONFIG_STATUS <<\EOF
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s%@configure_input@%$configure_input%;t t
+s%@srcdir@%$srcdir%;t t
+s%@top_srcdir@%$top_srcdir%;t t
+" $ac_file_inputs | (eval "$ac_sed_cmds") > $ac_cs_root.out
+  mv $ac_cs_root.out $ac_file
+fi; done
+rm -f $ac_cs_root.s*
+EOF
+cat >>$CONFIG_STATUS <<\EOF
+# These sed commands are passed to sed as "A NAME B NAME C VALUE D", where
+# NAME is the cpp macro being defined and VALUE is the value it is being given.
+#
+# ac_d sets the value in "#define NAME VALUE" lines.
+ac_dA='s%^\([ 	]*\)#\([ 	]*define[ 	][ 	]*\)'
+ac_dB='\([ 	][ 	]*\)[^ 	]*%\1#\2'
+ac_dC='\3'
+ac_dD='%g'
+# ac_u turns "#undef NAME" with trailing blanks into "#define NAME VALUE".
+ac_uA='s%^\([ 	]*\)#\([ 	]*\)undef\([ 	][ 	]*\)'
+ac_uB='\([ 	]\)%\1#\2define\3'
+ac_uC=' '
+ac_uD='\4%g'
+# ac_e turns "#undef NAME" without trailing blanks into "#define NAME VALUE".
+ac_eA='s%^\([ 	]*\)#\([ 	]*\)undef\([ 	][ 	]*\)'
+ac_eB='$%\1#\2define\3'
+ac_eC=' '
+ac_eD='%g'
+
+for ac_file in .. $CONFIG_HEADERS; do if test "x$ac_file" != x..; then
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case "$ac_file" in
+  *:*) ac_file_in=`echo "$ac_file"|sed 's%[^:]*:%%'`
+       ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
+  *) ac_file_in="${ac_file}.in" ;;
+  esac
+
+  echo creating $ac_file
+
+  rm -f $ac_cs_root.frag $ac_cs_root.in $ac_cs_root.out
+  ac_file_inputs=`echo $ac_file_in|sed -e "s%^%$ac_given_srcdir/%" -e "s%:% $ac_given_srcdir/%g"`
+  cat $ac_file_inputs > $ac_cs_root.in
+
+EOF
+
+# Transform confdefs.h into a sed script conftest.vals that substitutes
+# the proper values into config.h.in to produce config.h.  And first:
+# Protect against being on the right side of a sed subst in config.status.
+# Protect against being in an unquoted here document in config.status.
+rm -f conftest.vals
+cat > $ac_cs_root.hdr <<\EOF
+s/[\\&%]/\\&/g
+s%[\\$`]%\\&%g
+t clear
+: clear
+s%^[ 	]*#[ 	]*define[ 	][ 	]*\(\([^ 	(][^ 	(]*\)([^)]*)\)[ 	]*\(.*\)$%${ac_dA}\2${ac_dB}\1${ac_dC}\3${ac_dD}%gp
+t cleanup
+s%^[ 	]*#[ 	]*define[ 	][ 	]*\([^ 	][^ 	]*\)[ 	]*\(.*\)$%${ac_dA}\1${ac_dB}\1${ac_dC}\2${ac_dD}%gp
+: cleanup
+s%ac_d%ac_u%gp
+s%ac_u%ac_e%gp
+EOF
+# If some macros were called several times there might be several times
+# the same #defines, which is useless.  Nevertheless, we may not want to
+# sort them, since we want the *last* AC_DEFINE to be honored.
+uniq confdefs.h | sed -n -f $ac_cs_root.hdr > conftest.vals
+rm -f $ac_cs_root.hdr
+
+# This sed command replaces #undef with comments.  This is necessary, for
+# example, in the case of _POSIX_SOURCE, which is predefined and required
+# on some systems where configure will not decide to define it.
+cat >> conftest.vals <<\EOF
+s%^[ 	]*#[ 	]*undef[ 	][ 	]*[a-zA-Z_][a-zA-Z_0-9]*%/* & */%
+EOF
+
+# Break up conftest.vals because some shells have a limit on the size
+# of here documents, and old seds have small limits too (100 cmds).
+rm -f conftest.tail
+while :
+do
+  ac_lines=`grep -c . conftest.vals`
+  # grep -c gives empty output for an empty file on some AIX systems.
+  if test -z "$ac_lines" || test "$ac_lines" -eq 0; then break; fi
+  # Write a limited-size here document to $ac_cs_root.frag.
+  echo '  cat > $ac_cs_root.frag <<CEOF' >> $CONFIG_STATUS
+  echo '/^#[ 	]*u*n*d*e*f*/!b' >> $CONFIG_STATUS
+  sed ${ac_max_here_lines}q conftest.vals >> $CONFIG_STATUS
+  echo 'CEOF
+  sed -f $ac_cs_root.frag $ac_cs_root.in > $ac_cs_root.out
+  rm -f $ac_cs_root.in
+  mv $ac_cs_root.out $ac_cs_root.in
+' >> $CONFIG_STATUS
+  sed 1,${ac_max_here_lines}d conftest.vals > conftest.tail
+  rm -f conftest.vals
+  mv conftest.tail conftest.vals
+done
+rm -f conftest.vals
+
+cat >> $CONFIG_STATUS <<\EOF
+  rm -f $ac_cs_root.frag $ac_cs_root.h
+  echo "/* $ac_file.  Generated automatically by configure.  */" > $ac_cs_root.h
+  cat $ac_cs_root.in >> $ac_cs_root.h
+  rm -f $ac_cs_root.in
+  if cmp -s $ac_file $ac_cs_root.h 2>/dev/null; then
+    echo "$ac_file is unchanged"
+    rm -f $ac_cs_root.h
+  else
+    # Remove last slash and all that follows it.  Not all systems have dirname.
+      ac_dir=`echo $ac_file|sed 's%/[^/][^/]*$%%'`
+      if test "$ac_dir" != "$ac_file" && test "$ac_dir" != .; then
+      # The file is in a subdirectory.
+      test ! -d "$ac_dir" && mkdir "$ac_dir"
+    fi
+    rm -f $ac_file
+    mv $ac_cs_root.h $ac_file
+  fi
+fi; done
+EOF
+cat >> $CONFIG_STATUS <<\EOF
+srcdir=$ac_given_srcdir
+
+for ac_file in : $CONFIG_LINKS; do if test "x$ac_file" != x:; then
+  ac_dest=`echo "$ac_file"|sed 's%:.*%%'`
+  ac_source=`echo "$ac_file"|sed 's%[^:]*:%%'`
+
+  echo "linking $srcdir/$ac_source to $ac_dest"
+
+  if test ! -r $srcdir/$ac_source; then
+    { echo "configure: error: $srcdir/$ac_source: File not found" 1>&2; exit 1; }
+  fi
+  rm -f $ac_dest
+
+  # Make relative symlinks.
+  # Remove last slash and all that follows it.  Not all systems have dirname.
+  ac_dest_dir=`echo $ac_dest|sed 's%/[^/][^/]*$%%'`
+  if test "$ac_dest_dir" != "$ac_dest" && test "$ac_dest_dir" != .; then
+    # The dest file is in a subdirectory.
+    test ! -d "$ac_dest_dir" && mkdir "$ac_dest_dir"
+    ac_dest_dir_suffix="/`echo $ac_dest_dir|sed 's%^\./%%'`"
+    # A "../" for each directory in $ac_dest_dir_suffix.
+    ac_dots=`echo $ac_dest_dir_suffix|sed 's%/[^/]*%../%g'`
+  else
+    ac_dest_dir_suffix= ac_dots=
+  fi
+
+  case "$srcdir" in
+  [/$]*) ac_rel_source="$srcdir/$ac_source" ;;
+  *) ac_rel_source="$ac_dots$srcdir/$ac_source" ;;
+  esac
+
+  # Make a symlink if possible; otherwise try a hard link.
+  if ln -s $ac_rel_source $ac_dest 2>/dev/null ||
+     ln $srcdir/$ac_source $ac_dest; then :
+  else
+    { echo "configure: error: cannot link $ac_dest to $srcdir/$ac_source" 1>&2; exit 1; }
+  fi
+fi; done
+EOF
+
+cat >> $CONFIG_STATUS <<EOF
+
+EOF
+cat >> $CONFIG_STATUS <<\EOF
+
+exit 0
+EOF
+chmod +x $CONFIG_STATUS
+rm -fr confdefs* $ac_clean_files
+test "$no_create" = yes || $SHELL $CONFIG_STATUS || exit 1
+
diff --git a/configure.in b/configure.in
new file mode 100644
index 0000000..2e3f736
--- /dev/null
+++ b/configure.in
@@ -0,0 +1,23 @@
+dnl Process this file with autoconf to produce a configure script.
+AC_INIT(main.c)
+
+dnl Checks for programs.
+AC_PROG_CC
+
+dnl Checks for libraries.
+AC_CHECK_LIB(util, forkpty)
+
+dnl Checks for header files.
+AC_HEADER_STDC
+AC_CHECK_HEADERS(sys/ioctl.h sys/resource.h pty.h termios.h util.h unistd.h)
+
+dnl Checks for typedefs, structures, and compiler characteristics.
+AC_TYPE_PID_T
+
+dnl Checks for library functions.
+AC_PROG_GCC_TRADITIONAL
+AC_TYPE_SIGNAL
+AC_CHECK_FUNCS(socket strerror forkpty getrlimit)
+
+AC_CONFIG_HEADER(config.h)
+AC_OUTPUT(Makefile)
diff --git a/detach.h b/detach.h
new file mode 100644
index 0000000..8cb2b1f
--- /dev/null
+++ b/detach.h
@@ -0,0 +1,91 @@
+/*
+    dtach - A simple program that emulates the detach feature of screen.
+    Copyright (C) 2001 Ned T. Crigler
+
+    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
+*/
+#ifndef detach_h
+#define detach_h
+
+#include "config.h"
+
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef HAVE_PTY_H
+#include <pty.h>
+#endif
+
+#ifdef HAVE_UTIL_H
+#include <util.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
+#ifdef HAVE_SYS_RESOURCE_H
+#include <sys/resource.h>
+#endif
+
+#include <poll.h>
+#include <termios.h>
+
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+extern char *progname, *sockname;
+extern int detach_char, no_suspend;
+extern struct termios orig_term;
+
+enum
+{
+	MSG_PUSH,
+	MSG_WINCH,
+	MSG_REDRAW,
+	MSG_ATTACH,
+	MSG_DETACH
+};
+
+// The client to master protocol.
+struct packet
+{
+	unsigned char type;
+	unsigned char len;
+	union
+	{
+		unsigned char buf[sizeof(struct winsize)];
+		struct winsize ws;
+	} u;
+};
+
+// The master sends a simple stream of text to the attaching clients, without
+// any protocol. This might change back to the packet based protocol in the
+// future. In the meantime, however, we minimize the amount of data sent back
+// and forth between the client and the master. BUFSIZE is the size of the
+// buffer used for the text stream.
+#define BUFSIZE 4096
+
+int attach_main(int noerror);
+int master_main(char **argv);
+#endif
diff --git a/dtach.1 b/dtach.1
new file mode 100644
index 0000000..50b62fd
--- /dev/null
+++ b/dtach.1
@@ -0,0 +1,153 @@
+.TH dtach 1 "September 2001" "dtach 0.3"
+.SH NAME
+dtach \- simple program that emulates the detach feature of screen.
+.SH SYNOPSIS
+.B dtach -a
+.I <socket> <options>
+.br
+.B dtach -A
+.I <socket> <options> <command...>
+.br
+.B dtach -c
+.I <socket> <options> <command...>
+.br
+.B dtach -n
+.I <socket> <options> <command...>
+
+.SH DESCRIPTION
+.B dtach
+is a program that emulates the detach feature of screen. It is designed
+to be transparent and un-intrusive; it avoids interpreting the input and output
+between attached terminals and the program under its control. Consequently, it
+works best with full-screen applications such as emacs.
+
+.B dtach
+is intended for users who want the detach feature of screen without the other
+overhead that screen has. It is tiny, does not use many libraries, and stays
+out of the way as much as possible.
+
+.SS SESSIONS
+A session in
+.B dtach
+is a single instance in which a program is running under the control of
+.BR dtach .
+The program is dissasociated from the original terminal, and is thus protected
+from your original terminal being disconnected for some reason.
+.PP
+
+Other instances of 
+.B dtach
+can attach themselves to a particular session. Input and output is copied
+between the program running in the
+.B dtach
+session, and the attached terminals.
+.PP
+
+.B dtach
+avoids interpreting the communication stream between the program and the
+attached terminals; it instead relies on the ability of the attached terminals
+to manage the screen.
+.PP
+
+Sessions are represented by Unix-domain sockets in the filesystem. No other
+permission checking other than the filesystem access checks is performed.
+.B dtach
+creates a master process that monitors the session socket, the program, and any
+attached terminals.
+
+.PP
+.SS MODES
+.B dtach
+has several modes of operation. It can create a new session in which a
+program is executed, or it can attach to an already existing session. The first
+argument specifies which mode
+.B dtach
+should operate in.
+.TP
+.B \-a
+Attach to an already existing session.
+.B dtach
+attaches itself to the session specified by
+.IR <socket> .
+After the attach is completed, the window size of the current terminal is sent
+to the master process, and a redraw is also requested. 
+.TP
+.B \-A
+Attach to an already existing session, or create a new one.
+.B dtach
+first tries to attach to the session specified by
+.I <socket>
+if possible. If the attempt to open the socket fails,
+.B dtach
+tries to create a new session before attaching to it.
+.TP
+.B \-c
+Creates a new session. A new session is created in which the specified program
+is executed.
+.B dtach
+then tries to attach itself to the newly created session.
+.TP
+.B \-n
+Creates a new session, without attaching to it. A new session is created in
+which the specified program is executed.
+.B dtach
+does not try to attach to the newly created session, however, and exits
+instead.
+
+.PP
+.SS OPTIONS
+.B dtach
+has a few options that allow you to modify its behavior. Each attaching
+process can have separate settings for these options, which allows for
+some flexibility.
+
+.TP
+.BI "\-e " "<char>"
+Sets the detach character to
+.IR <char> .
+When the detach character is pressed,
+.B dtach
+detaches itself from the current session and exits. The process running in
+the session is unaffected by the detach. By default, the detach character is
+set to ^\\ (Ctrl-\\).
+.TP
+.B \-E
+Disables the detach character.
+.B dtach
+does not try to scan input from the terminal for a detach character. The only
+way to detach from the session is then by sending the attaching process an
+appropriate signal.
+.TP
+.B \-z
+Inhibits processing of the suspend key.
+Normally,
+.B dtach
+will suspend itself when the suspend key is pressed. With this option, the
+suspend character is sent to the session instead of being handled by
+.BR dtach .
+
+.PP
+.SH EXAMPLES
+
+The following example creates a new session that has the detach character
+and suspend processing disabled. A socket is created in the /tmp directory
+for the session.
+
+.nf
+   $ dtach -c /tmp/foozle -Ez bash
+.fi
+
+The following example attaches to the /tmp/foozle session if it exists, and if
+not, creates a new session using /tmp/foozle as the socket for the session.
+Processing of the suspend character is also disabled for the attach instance.
+
+.nf
+   $ dtach -A /tmp/foozle -z bash
+.fi
+
+.PP
+.SH AUTHORS
+Ned T. Crigler <crigler@hell-city.org>.
+
+.SH "SEE ALSO"
+.BR screen "(1)"
diff --git a/dtach.spec b/dtach.spec
new file mode 100644
index 0000000..d775c33
--- /dev/null
+++ b/dtach.spec
@@ -0,0 +1,83 @@
+Summary: A simple program that emulates the detach feature of screen.
+Name: dtach
+Version: 0.3
+Release: 1
+Copyright: GPL
+URL: http://people.redhat.com/iweiner/dtach
+Group: Applications/System
+Source: dtach-%{version}.tar.gz
+Prefix: /usr
+Buildroot: %{_tmppath}/%{name}-%{version}-buildroot
+Obsoletes: detach
+ 
+%description
+dtach is a program that emulates the detach feature of screen, without the
+other overhead that screen has. It is designed to be transparent and
+un-intrusive; it avoids interpreting the input and output between attached
+terminals and the program under its control. Consequently, it works best with
+full-screen applications such as emacs.
+ 
+%prep
+%setup
+ 
+%build
+%configure
+make
+ 
+%install
+rm -rf $RPM_BUILD_ROOT/*
+mkdir -p $RPM_BUILD_ROOT/%{_bindir}
+mkdir -p $RPM_BUILD_ROOT/usr/share/doc/dtach-%{version}
+mkdir -p $RPM_BUILD_ROOT/%{_mandir}/man1
+install -m 755 dtach $RPM_BUILD_ROOT/%{_bindir}/dtach
+install -m 644 COPYING $RPM_BUILD_ROOT/usr/share/doc/dtach-%{version}
+install -m 644 dtach.1 $RPM_BUILD_ROOT/%{_mandir}/man1/dtach.1
+
+%clean
+make clean
+rm -rf $RPM_BUILD_ROOT
+rm -rf $RPM_BUILD_DIR/%{name}-%{version}
+
+%files
+%defattr(-,root,root,-)
+%doc /usr/share/doc/dtach-%{version}/COPYING
+%{_bindir}/dtach
+%{_mandir}/man1/*
+
+%changelog
+* Wed Sep 26 2001 Ned T. Crigler <crigler@hell-city.org> 0.3
+- Use getrlimit and dynamically allocate the data structures, if possible.
+- Added some more autoconf checks.
+- Initial sourceforge release.
+
+* Thu Sep 20 2001 Ned T. Crigler <crigler@hell-city.org>
+- Changed the master to send a stream of text to attaching clients instead
+  of sending a huge packet all the time.
+- Decreased the client <-> master packet size.
+- Changed the attach code so that it tells the master when a suspend occurs.
+
+* Tue Sep 18 2001 Ned T. Crigler <crigler@hell-city.org>
+- Fixed a typo in dtach.1
+
+* Tue Sep 18 2001 Ned T. Crigler <crigler@hell-city.org> 0.2
+- Removed silly thinko regarding terminal settings in attach, we
+  always set the terminal to raw mode now.
+- Moved redraw code into the master, which tries to be smarter when
+  using ^L.
+- Moved the code that obtains the current terminal settings into main,
+  preventing a race condition between the master and attach processes.
+- Rewrote argument parsing code.
+- Changed name to dtach.
+- Added a man page.
+
+* Mon Sep 17 2001 Ned T. Crigler <crigler@hell-city.org>
+- Changed fchmod to chmod in create_socket.
+
+* Mon Sep 17 2001 Isaiah Weiner <iweiner@redhat.com>
+- Modified spec file to correct detach binary permissions
+- Modified spec file to correct detach documentation path
+- Modified spec file URL: to point to http://people.redhat.com/iweiner/detach
+- Modified spec file %clean to remove buildroot and builddir.
+
+* Mon Sep 17 2001 Ned T. Crigler <crigler@hell-city.org> 0.1
+- Initial rpm release.
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..be6c17a
--- /dev/null
+++ b/main.c
@@ -0,0 +1,216 @@
+/*
+    dtach - A simple program that emulates the detach feature of screen.
+    Copyright (C) 2001 Ned T. Crigler
+
+    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
+*/
+#include "detach.h"
+
+/*
+** detach is a quick hack, since I wanted the detach feature of screen without
+** all the other crud. It'll work best with full-screen applications, as it
+** does not keep track of the screen or anything like that.
+*/
+
+// The program version
+#define VERSION "0.3"
+
+// Make sure the binary has a copyright.
+const char copyright[] = "dtach - version " VERSION " (C)Copyright 2001 Ned T. Crigler";
+
+// argv[0] from the program
+char *progname;
+// The name of the passed in socket.
+char *sockname;
+// The character used for detaching. Defaults to '^\'
+int detach_char = '\\' - 64;
+// 1 if we should not interpret the suspend character.
+int no_suspend;
+
+// The original terminal settings. Shared between the master and attach
+// processes. The master uses it to initialize the pty, and the attacher uses
+// it to restore the original settings.
+struct termios orig_term;
+
+static void
+usage()
+{
+	printf(
+		"dtach - version %s, compiled on %s at %s.\n"
+		"Usage: dtach -a <socket> <options>\n"
+		"       dtach -A <socket> <options> <command...>\n"
+		"       dtach -c <socket> <options> <command...>\n"
+		"       dtach -n <socket> <options> <command...>\n"
+		"Modes:\n"
+		"  -a\t\tAttach to the specified socket.\n"
+		"  -A\t\tAttach to the specified socket, or create it if it\n"
+		"\t\t  does not exist, running the specified command.\n"
+		"  -c\t\tCreate a new socket and run the specified command.\n"
+		"  -n\t\tCreate a new socket and run the specified command "
+		"detached.\n"
+		"Options:\n"
+		"  -e <char>\tSet the detach character to <char>, defaults "
+		"to ^\\.\n"
+		"  -E\t\tDisable the detach character.\n"
+		"  -z\t\tInhibit processing of the suspend key.\n"
+		"\nReport any bugs to <crigler@hell-city.org>.\n",
+		VERSION, __DATE__, __TIME__);
+	exit(0);
+}
+
+int
+main(int argc, char **argv)
+{
+	int mode = 0;
+
+	// Save the program name
+	progname = argv[0];
+	++argv; --argc;
+
+	// Parse the arguments
+	if (argc >= 1 && **argv == '-')
+	{
+		if (strncmp(*argv, "--help", strlen(*argv)) == 0)
+			usage();
+		else if (strncmp(*argv, "--version", strlen(*argv)) == 0)
+		{
+			printf("dtach - version %s, compiled on %s at %s.\n",
+				VERSION, __DATE__, __TIME__);
+			return 0;
+		}
+
+		mode = argv[0][1];
+		if (mode == '?')
+			usage();
+		else if (mode != 'a' && mode != 'c' && mode != 'n' &&
+			 mode != 'A')
+		{
+			printf("%s: Invalid mode '-%c'\n", progname, mode);
+			printf("Try '%s -?' for more information.\n",
+				progname);
+			return 1;
+		}
+	}
+	if (!mode)
+	{
+		printf("%s: No mode was specified.\n", progname);
+		printf("Try '%s -?' for more information.\n",
+			progname);
+		return 1;
+	}
+	++argv; --argc;
+
+	if (argc < 1)
+	{
+		printf("%s: No socket was specified.\n", progname);
+		printf("Try '%s -?' for more information.\n",
+			progname);
+		return 1;
+	}
+	sockname = *argv;
+	++argv; --argc;
+
+	while (argc >= 1 && **argv == '-')
+	{
+		char *p;
+
+		for (p = argv[0] + 1; *p; ++p)
+		{
+			if (*p == 'E')
+				detach_char = -1;
+			else if (*p == 'z')
+				no_suspend = 1;
+			else if (*p == 'e')
+			{
+				++argv; --argc;
+				if (argc < 1)
+				{
+					printf("%s: No escape character "
+						"specified.\n", progname);	
+					printf("Try '%s -?' for more "
+						"information.\n", progname);
+					return 1;
+				}
+				if (argv[0][0] == '^' && argv[0][1])
+				{
+					if (argv[0][1] == '?')
+						detach_char = '\177';
+					else
+						detach_char = argv[0][1] - 64;
+				}
+				else
+					detach_char = argv[0][0];
+				break;
+			}
+			else
+			{
+				printf("%s: Invalid option '-%c'\n",
+					progname, *p);
+				printf("Try '%s -?' for more information.\n",
+					progname);
+				return 1;
+			}
+		}
+		++argv; --argc;
+	}
+
+	if (mode != 'a' && argc < 1)
+	{
+		printf("%s: No command was specified.\n", progname);
+		printf("Try '%s -?' for more information.\n",
+			progname);
+		return 1;
+	}
+
+	// Save the original terminal settings.
+	if (tcgetattr(0, &orig_term) < 0)
+	{
+		printf("%s: tcgetattr: %s\n", progname, strerror(errno));
+		return 1;
+	}
+
+	if (mode == 'a')
+	{
+		if (argc > 0)
+		{
+			printf("%s: Invalid number of arguments.\n",
+				progname);
+			printf("Try '%s -?' for more information.\n",
+				progname);
+			return 1;
+		}
+		return attach_main(0);
+	}
+	else if (mode == 'n')
+		return master_main(argv);
+	else if (mode == 'c')
+	{
+		if (master_main(argv) != 0)
+			return 1;
+		return attach_main(0);
+	}
+	else if (mode == 'A')
+	{
+		// Try to attach first. If that doesn't work, create a new
+		// socket.
+		if (attach_main(1) != 0)
+		{
+			if (master_main(argv) != 0)
+				return 1;
+			return attach_main(0);
+		}
+	}
+	return 0;
+}
diff --git a/master.c b/master.c
new file mode 100644
index 0000000..e31a6da
--- /dev/null
+++ b/master.c
@@ -0,0 +1,327 @@
+/*
+    dtach - A simple program that emulates the detach feature of screen.
+    Copyright (C) 2001 Ned T. Crigler
+
+    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
+*/
+#include "detach.h"
+
+// The pty struct - The pty information is stored here.
+struct pty
+{
+	// File descriptor of the pty
+	int fd;
+	// The terminal parameters of the pty. Old and new for comparision
+	// purposes.
+	struct termios term;
+	// The current window size of the pty.
+	struct winsize ws;
+};
+
+// The poll structures
+static struct pollfd *polls;
+// The number of active poll slots
+static int num_polls;
+// Boolean array for whether a particular connection is attached.
+static int *attached;
+// The highest file descriptor possible, as returned by getrlimit.
+static int highest_fd;
+
+// The number of fixed slots in the poll structures
+#define FIXED_SLOTS 2
+
+// Unlink the socket
+static void
+unlink_socket(void)
+{
+	unlink(sockname);
+}
+
+// Signal
+static RETSIGTYPE 
+die(int sig)
+{
+	// Well, the child died.
+	if (sig == SIGCHLD)
+		return;
+	exit(1);
+}
+
+// Initialize the pty structure.
+static int
+init_pty(struct pty *pty, char **argv)
+{
+	pid_t pid;
+
+	// Use the original terminal's settings. We don't have to set the
+	// window size here, because the attacher will send it in a packet.
+	pty->term = orig_term;
+
+	// Create the pty process
+	pid = forkpty(&pty->fd, NULL, &pty->term, NULL);
+	if (pid < 0)
+		return -1;
+	else if (pid == 0)
+	{
+		int i;
+
+		// Child.. Close some file descriptors and execute the program.
+		for (i = highest_fd; i > 2; --i)
+			close(i);
+
+		execvp(*argv, argv);
+		exit(127);
+	}
+	// Parent.. Finish up and return
+	return 0;
+}
+
+// Creates a new unix domain socket.	
+static int
+create_socket(char *name)
+{
+	int s;
+	struct sockaddr_un sun;
+
+	s = socket(PF_UNIX, SOCK_STREAM, 0);
+	if (s < 0)
+		return -1;
+	sun.sun_family = AF_UNIX;
+	strcpy(sun.sun_path, name);
+	if (bind(s, (struct sockaddr*)&sun, sizeof(sun)) < 0)
+		return -1;
+	if (listen(s, 128) < 0)
+		return -1;
+	// chmod it to prevent any suprises
+	if (chmod(name, 0600) < 0)
+		return -1;
+	return s;
+}
+
+// Process activity on a pty - Input and terminal changes are sent out to
+// the attached clients. If the pty goes away, we die.
+static void
+pty_activity(struct pty *pty)
+{
+	int i, len;
+	unsigned char buf[BUFSIZE];
+
+	// Read the pty activity
+	len = read(pty->fd, buf, sizeof(buf));
+
+	// Error -> die
+	if (len <= 0)
+		exit(1);
+
+	// Get the current terminal settings.
+	if (tcgetattr(pty->fd, &pty->term) < 0)
+		exit(1);
+
+	// Send it out to the clients.
+	for (i = FIXED_SLOTS; i < num_polls; ++i)
+	{
+		if (attached[polls[i].fd])
+			write(polls[i].fd, buf, len);
+	}
+}
+
+// Process activity on the control socket
+static void
+control_activity(int s)
+{
+	int fd;
+ 
+	// Accept the new client and link it in.
+	fd = accept(s, 0, 0);
+	if (fd < 0)
+		return;
+
+	// Link it in.
+	polls[num_polls].fd = fd;
+	polls[num_polls].events = POLLIN;
+	polls[num_polls].revents = 0;
+	attached[fd] = 1;
+	++num_polls;
+}
+
+// Process activity from a client.
+static void
+client_activity(int i, struct pty *pty)
+{
+	int len;
+	struct packet pkt;
+
+	// Read the activity.
+	len = read(polls[i].fd, &pkt, sizeof(pkt));
+	if (len <= 0)
+	{
+		// Close the socket and go bye bye
+		attached[polls[i].fd]=0;
+		close(polls[i].fd);
+		memcpy(polls + i, polls + i + 1, num_polls - i);
+		--num_polls;
+		return;
+	} 
+
+	// Okay, check the command byte. Push out data if we need to.
+	if (pkt.type == MSG_PUSH)
+		write(pty->fd, pkt.u.buf, pkt.len);
+	// Window size change.
+	else if (pkt.type == MSG_WINCH)
+	{
+		pty->ws = pkt.u.ws;
+		ioctl(pty->fd, TIOCSWINSZ, &pty->ws);
+	}
+	// Redraw request?
+	else if (pkt.type == MSG_REDRAW)
+	{
+		char c = '\f';
+
+		// Guess that ^L might work under certain conditions.
+		if (((pty->term.c_lflag & (ECHO|ICANON)) == 0) &&
+			(pty->term.c_cc[VMIN] == 1))
+		{
+			write(pty->fd, &c, sizeof(c));
+		}
+	}
+	// Attach request?
+	else if (pkt.type == MSG_ATTACH)
+		attached[polls[i].fd] = 1;
+	else if (pkt.type == MSG_DETACH)
+		attached[polls[i].fd] = 0;
+}
+
+// The master process - It watches over the pty process and the attached
+// clients.
+static void
+master_process(int s, char **argv)
+{
+	struct pty pty;
+	int i;
+
+#ifdef HAVE_GETRLIMIT
+	struct rlimit rlim;
+
+	// Dynamically allocate structures based on the number of file
+	// descriptors.
+
+	if (getrlimit(RLIMIT_NOFILE, &rlim) < 0)
+	{	
+		printf("%s: getrlimit: %s\n", progname, strerror(errno));
+		exit(1);
+	}
+	highest_fd = rlim.rlim_cur;
+#else
+	// We can't query the OS for the number of file descriptors, so
+	// we pull a number out of the air.
+	highest_fd = 1024;
+#endif
+	polls = (struct pollfd*)malloc(highest_fd * sizeof(struct pollfd));
+	attached = (int*)malloc(highest_fd * sizeof(int));
+
+	// Okay, disassociate ourselves from the original terminal, as we
+	// don't care what happens to it.
+	setsid();
+
+	// Create a pty in which the process is running.
+	if (init_pty(&pty, argv) < 0)
+	{
+		printf("%s: init_pty: %s\n", progname, strerror(errno));
+		exit(1);
+	}
+
+	// Set up some signals.
+	signal(SIGPIPE, SIG_IGN);
+	signal(SIGXFSZ, SIG_IGN);
+	signal(SIGHUP, SIG_IGN);
+	signal(SIGTTIN, SIG_IGN);
+	signal(SIGTTOU, SIG_IGN);
+	signal(SIGINT, die);
+	signal(SIGTERM, die);
+	signal(SIGCHLD, die);
+
+	// Close the original terminal. We are now a daemon.
+	fclose(stdin);
+	fclose(stdout);
+	fclose(stderr);
+
+	// Set a trap to unlink the socket when we die
+	atexit(unlink_socket);
+
+	// Set up the poll structures. Slot 0 is the control socket, slot 1
+	// is the pty, and slot 2 .. n is the connected clients.
+	polls[0].fd = s;
+	polls[0].events = POLLIN;
+	polls[0].revents = 0;
+	polls[1].fd = pty.fd;
+	polls[1].events = POLLIN;
+	polls[1].revents = 0;
+	num_polls = FIXED_SLOTS;
+
+	// Loop forever.
+	while (1)
+	{
+		// Wait for something to happen.
+		if (poll(polls, num_polls, -1) < 0)
+		{
+			if (errno == EINTR || errno == EAGAIN)
+				continue;
+			exit(1);
+		}	
+		// pty activity?
+		if (polls[1].revents != 0)
+			pty_activity(&pty);
+		// New client?
+		if (polls[0].revents != 0)
+			control_activity(s);
+		// Activity on a client?
+		for (i = 2; i < num_polls; ++i)
+		{
+			if (polls[i].revents != 0)
+				client_activity(i, &pty);
+		}
+	}
+}
+
+int
+master_main(char **argv)
+{
+	int s;
+	pid_t pid;
+
+	// Create the unix domain socket.
+	s = create_socket(sockname);
+	if (s < 0)
+	{
+		printf("%s: %s: %s\n", progname, sockname, strerror(errno));
+		return 1;
+	}
+
+	// Fork off so we can daemonize and such
+	pid = fork();
+	if (pid < 0)
+	{
+		printf("%s: fork: %s\n", progname, strerror(errno));
+		return 1;
+	}
+	else if (pid == 0)
+	{
+		// Child - this becomes the master
+		master_process(s, argv);
+		return 0;
+	}
+	// Parent - just return.
+	return 0;
+}