Source Code 1994 March/Source_Code_CD-ROM_Walnut_Creek_March_1994.iso/compsrcs/misc/volume36/tcx/part02

Text File | 1993-04-03 | 26.2 KB | 575 lines

Newsgroups: comp.sources.misc
From: [e-mail] (Stewart Forster)
Subject: v36i097:  tcx - Transparent Compressed Executables, v1.02, Part02/02
Message-ID: <[e-mail]>
X-Md4-Signature: ab0ca443763052e716d2f54af7720761
Date: Sun, 4 Apr 1993 22:52:54 GMT
Approved: [e-mail]

Submitted-by: [e-mail] (Stewart Forster)
Posting-number: Volume 36, Issue 97
Archive-name: tcx/part02
Environment: SunOS, Ultrix, Irix

#! /bin/sh
# This is a shell archive.  Remove anything before this line, then feed it
# into a shell via "sh file" or similar.  To overwrite existing files,
# type "sh file -c".
# Contents:  COPYING Makefile VERSION tcx.1 untcx.1
# Wrapped by kent@sparky on Sun Apr  4 17:44:17 1993
PATH=/bin:/usr/bin:/usr/ucb:/usr/local/bin:/usr/lbin ; export PATH
echo If this archive is complete, you will see the following message:
echo '          "shar: End of archive 2 (of 2)."'
if test -f 'COPYING' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'COPYING'\"
else
  echo shar: Extracting \"'COPYING'\" \(17982 characters\)
  sed "s/^X//" >'COPYING' <<'END_OF_FILE'
X            GNU GENERAL PUBLIC LICENSE
X               Version 2, June 1991
X
X Copyright (C) 1989, 1991 Free Software Foundation, Inc.
X                          675 Mass Ave, Cambridge, MA 02139, USA
X Everyone is permitted to copy and distribute verbatim copies
X of this license document, but changing it is not allowed.
X
X                Preamble
X
X  The licenses for most software are designed to take away your
Xfreedom to share and change it.  By contrast, the GNU General Public
XLicense is intended to guarantee your freedom to share and change free
Xsoftware--to make sure the software is free for all its users.  This
XGeneral Public License applies to most of the Free Software
XFoundation's software and to any other program whose authors commit to
Xusing it.  (Some other Free Software Foundation software is covered by
Xthe GNU Library General Public License instead.)  You can apply it to
Xyour programs, too.
X
X  When we speak of free software, we are referring to freedom, not
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X    This program is free software; you can redistribute it and/or modify
X    it under the terms of the GNU General Public License as published by
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X    (at your option) any later version.
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X    but WITHOUT ANY WARRANTY; without even the implied warranty of
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X    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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XAlso add information on how to contact you by electronic and paper mail.
X
XIf the program is interactive, make it output a short notice like this
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X
X    Gnomovision version 69, Copyright (C) 19yy name of author
X    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
X    This is free software, and you are welcome to redistribute it
X    under certain conditions; type `show c' for details.
X
XThe hypothetical commands `show w' and `show c' should show the appropriate
Xparts of the General Public License.  Of course, the commands you use may
Xbe called something other than `show w' and `show c'; they could even be
Xmouse-clicks or menu items--whatever suits your program.
X
XYou should also get your employer (if you work as a programmer) or your
Xschool, if any, to sign a "copyright disclaimer" for the program, if
Xnecessary.  Here is a sample; alter the names:
X
X  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
X  `Gnomovision' (which makes passes at compilers) written by James Hacker.
X
X  <signature of Ty Coon>, 1 April 1989
X  Ty Coon, President of Vice
X
XThis General Public License does not permit incorporating your program into
Xproprietary programs.  If your program is a subroutine library, you may
Xconsider it more useful to permit linking proprietary applications with the
Xlibrary.  If this is what you want to do, use the GNU Library General
XPublic License instead of this License.
END_OF_FILE
  if test 17982 -ne `wc -c <'COPYING'`; then
    echo shar: \"'COPYING'\" unpacked with wrong size!
  fi
  # end of 'COPYING'
fi
if test -f 'Makefile' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'Makefile'\"
else
  echo shar: Extracting \"'Makefile'\" \(567 characters\)
  sed "s/^X//" >'Makefile' <<'END_OF_FILE'
X#
X#        Makefile for tcx
X#
X#    Author : Stewart Forster, University Of Melbourne, 25/31993
X#
X
X# C compiler of your choice.  Should be ansi'ish
XCC = cc            # IRIX, ULTRIX
X#CC = gcc        # SUNOS
X
X
X# Cflags of choice.
XCFLAGS = -s -O
X
X
X# Any libraries
XLIBS = -lmalloc -lc_s    # IRIX
X#LIBS =            # SUNOS, ULTRIX
X
X
Xall:    tcx untcx
X
Xtcx:    tcx.c config.h
X    $(CC) $(CFLAGS) -o tcx tcx.c $(LIBS)
X
Xuntcx:    untcx.c config.h
X    $(CC) $(CFLAGS) -o untcx untcx.c $(LIBS)
X
Xshar:
X    shar -c -l 45 -o tcx README VERSION COPYING Makefile tcx.1 untcx.1 tcx.c config.h untcx.c
X
Xclean:
X    /bin/rm -f *.o tcx untcx
END_OF_FILE
  if test 567 -ne `wc -c <'Makefile'`; then
    echo shar: \"'Makefile'\" unpacked with wrong size!
  fi
  # end of 'Makefile'
fi
if test -f 'VERSION' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'VERSION'\"
else
  echo shar: Extracting \"'VERSION'\" \(1239 characters\)
  sed "s/^X//" >'VERSION' <<'END_OF_FILE'
XVersion 1.0.2    (27/3/1993)    Stewart Forster
X    untcx.c        v1.0.2
X        - Added open file table reference count to internal hash
X        tables for SUNOS.  This means that inodes won't have to
X        time out before recompressing the file they point to.
X          Thanks to Mike Lawley for pointing out problem
X        - Fixed tragic bug in pathname resolution that would have
X        caused a lot of problems when a program needs to access
X        files in the directory in which it was invoked, and not
X        where it lived! Also the cause of incorrect pathname
X        generation on NFS mounted executables placed in ENFSDIR.
X        Thanks to many who directly and indirectly reported this.
XVersion 1.0.1    (26/3/1993)    Stewart Forster
X    tcx.c        v1.0.2
X        - Worked around Ultrix file lock problem on NFS mounted
X        files.  Ultrix 4.2 can't lock NFS files.
X            v1.0.1
X        - Rewrote scratch file creation code to fix Ultrix
X        ftruncate bug reported by John Adcock and Joel Fine.
X        Removed the need for ftruncate().
X    untcx.c        v1.0.1
X        - Fixed trailing slash on mkdir argument which Ultrix
X        barfs on. Reported by John Adcock.
X    config.h    v1.0.1
X        - Added comments about not using tmpfs on SUNOS for ENFSDIR
X
XVersion 1.0    (25/3/1993)    (Original Release)    Stewart Forster
X    tcx.c        v1.0
X    untcx.c        v1.0
X    config.h    v1.0
END_OF_FILE
  if test 1239 -ne `wc -c <'VERSION'`; then
    echo shar: \"'VERSION'\" unpacked with wrong size!
  fi
  # end of 'VERSION'
fi
if test -f 'tcx.1' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'tcx.1'\"
else
  echo shar: Extracting \"'tcx.1'\" \(2011 characters\)
  sed "s/^X//" >'tcx.1' <<'END_OF_FILE'
X.TH TCX 1 "19 March 1993"
X.UC Melb
X.SH NAME
Xtcx \- Transparantly compress executables
X.SH SYNOPSIS
Xtcx filename
X.SH DESCRIPTION
X.B Tcx
Xwill replace an executable with a compressed version of it that is still
Xcapable of being executed.  The amount of savings will depend on the
Xcompression algorithm configured for use by tcx.
XAn executable compressed with tcx can be run as per normal with (hopefully) no
Xside effects other than a minor delay in startup time.
X.PP
XExecutables local to the system (not NFS mounted) are uncompressed in place
Xand recompressed again some time after it stops being used.  The standard
Xtimeout is 1/2 an hour.
X.PP
XExecutables residing on NFS mounted directores are unpacked to a directory local
Xto the system and run from there.  These executables lie around for about one
Xminute after disuse, after which time they get deleted.
X.PP
XAll this action is transparant to the user, but executables residing on NFS
Xmounted filesystems actually get the benefit of not hanging, in the event of
Xpaging activity, if the NFS server on which they live goes down.  This fact
Xwill also improve the performance of executables on machines short of memory.
X.SH SEE ALSO
Xuntcx(1)
X.SH CAVEATS
XTcx will try to maintain permissions but in order to allow execution
Xof a program on an NFS mounted filesystem to which another machine may
Xnot have root access to, it also sets the read bits on the executable
Xcorresponding to the execute bits.  This may be a slight security flaw
Xand if it causes you problems on particular executables, do not use it on them.
X.PP
XTcx requires the corresponding untcx(1) program to be available otherwise
Xtransparency is not assured.  Yell at your Systems Programmer if tcx'ed
Xexecutables fail to execute.
X.SH BUGS
XTcx is still in beta test stage, so there are bound to be some.
XPlease report any bugs or "patch"-style bug fixes (or new system ports)
Xor even just suggested improvements, via email to [e-mail]
X.SH AUTHOR
XStewart Forster, University Of Melbourne, 1993
END_OF_FILE
  if test 2011 -ne `wc -c <'tcx.1'`; then
    echo shar: \"'tcx.1'\" unpacked with wrong size!
  fi
  # end of 'tcx.1'
fi
if test -f 'untcx.1' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'untcx.1'\"
else
  echo shar: Extracting \"'untcx.1'\" \(1499 characters\)
  sed "s/^X//" >'untcx.1' <<'END_OF_FILE'
X.TH UNTCX 1 "19 March 1993"
X.UC Melb
X.SH NAME
Xuntcx \- Uncompress or execute tcx executables
X.SH SYNOPSIS
Xuntcx [-x | -u] filename [args]
X.SH DESCRIPTION
X\fBUntcx\fP performs three functions.  Firstly used as listed above, it
Xwill uncompress an executable compressed with tcx(1), if such compression
Xis no longer desired.  If the \fB-x\fP option is specified, this will force
Xuntcx to execute \fBfilename\fP, with \fBargs\fP as command line arguments.
X.PP
XIf the \fB-u\fP option is given, this forces untcx into plain decompression
Xof \fBfilename\fP.  Note, that while this is the default mode of operation for
Xusers other than root, it is required if the invoking user is root.
X.PP
XSecondly it is the tool which performs and transparant uncompression
Xand execution of executables compressed with tcx(1).  This mode of
Xoperation is never directly seen by the user (otherwise it wouldn't
Xbe transparent would it!).
X.PP
XThirdly it invokes itself in a daemon mode which will keep track of
Xall executables operating withing the tcx system, to allow for
Xtransparent recompression of executables that have been uncompressed
Xin the process of being invoked.  This mode of operation is also
Xtransparent to the user.
X.SH SEE ALSO
Xtcx(1)
X.SH BUGS
XUntcx is still in beta test stage, so there are bound to be some.
XPlease report any bugs or "patch"-style bug fixes (or new system ports)
Xor even just suggested improvements, via email to [e-mail]
X.SH AUTHOR
XStewart Forster, University Of Melbourne, 1993
END_OF_FILE
  if test 1499 -ne `wc -c <'untcx.1'`; then
    echo shar: \"'untcx.1'\" unpacked with wrong size!
  fi
  # end of 'untcx.1'
fi
echo shar: End of archive 2 \(of 2\).
cp /dev/null ark2isdone
MISSING=""
for I in 1 2 ; do
    if test ! -f ark${I}isdone ; then
    MISSING="${MISSING} ${I}"
    fi
done
if test "${MISSING}" = "" ; then
    echo You have unpacked both archives.
    rm -f ark[1-9]isdone
else
    echo You still must unpack the following archives:
    echo "        " ${MISSING}
fi
exit 0
exit 0 # Just in case...