+++ /dev/null
-#!/bin/sh
-# ----------------------------------------------------------------------
-# Copyright (C) 2005-2010 Karl J. Runge <runge@karlrunge.com>
-# All rights reserved.
-#
-# This file is part of Xdummy.
-#
-# Xdummy 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.
-#
-# Xdummy 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 Xdummy; if not, write to the Free Software
-# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA
-# or see <http://www.gnu.org/licenses/>.
-# ----------------------------------------------------------------------
-#
-#
-# Xdummy: an LD_PRELOAD hack to run a stock Xorg(1) or XFree86(1) server
-# with the "dummy" video driver to make it avoid Linux VT switching, etc.
-#
-# Run "Xdummy -help" for more info.
-#
-install=""
-uninstall=""
-runit=1
-prconf=""
-notweak=""
-root=""
-nosudo=""
-xserver=""
-geom=""
-nomodelines=""
-depth=""
-debug=""
-strace=""
-cmdline_config=""
-
-PATH=$PATH:/bin:/usr/bin
-export PATH
-
-program=`basename "$0"`
-
-help () {
- ${PAGER:-more} << END
-$program:
-
- A hack to run a stock Xorg(1) or XFree86(1) X server with the "dummy"
- (RAM-only framebuffer) video driver such that it AVOIDS the Linux VT
- switching, opening device files in /dev, keyboard and mouse conflicts,
- and other problems associated with the normal use of "dummy".
-
- In other words, it tries to make Xorg/XFree86 with the "dummy"
- device driver act more like Xvfb(1).
-
- The primary motivation for the Xdummy script is to provide a virtual X
- server for x11vnc but with more features than Xvfb (or Xvnc); however
- it could be used for other reasons (e.g. better automated testing
- than with Xvfb.) One nice thing is the dummy server supports RANDR
- dynamic resizing while Xvfb does not.
-
- So, for example, x11vnc+Xdummy terminal services are a little better
- than x11vnc+Xvfb.
-
- To achieve this, while running the real Xserver $program intercepts
- system and library calls via the LD_PRELOAD method and modifies
- the behavior to make it work correctly (e.g. avoid the VT stuff.)
- LD_PRELOAD tricks are usually "clever hacks" and so might not work
- in all situations or break when something changes.
-
- WARNING: Take care in using Xdummy, although it never has it is
- possible that it could damage hardware. One can use the -prconf
- option to have it print out the xorg.conf config that it would use
- and then inspect it carefully before actually using it.
-
- This program no longer needs to be run as root as of 12/2009.
- However, if there are problems for certain situations (usually older
- servers) it may perform better if run as root (use the -root option.)
- When running as root remember the previous paragraph and that Xdummy
- comes without any warranty.
-
- gcc/cc and other build tools are required for this script to be able
- to compile the LD_PRELOAD shared object. Be sure they are installed
- on the system. See -install and -uninstall described below.
-
- Your Linux distribution may not install the dummy driver by default,
- e.g:
-
- /usr/lib/xorg/modules/drivers/dummy_drv.so
-
- some have it in a package named xserver-xorg-video-dummy you that
- need to install.
-
-Usage:
-
- $program <${program}-args> <Xserver-args>
-
- (actually, the arguments can be supplied in any order.)
-
-Examples:
-
- $program -install
-
- $program :1
-
- $program -debug :1
-
- $program -tmpdir ~/mytmp :1 -nolisten tcp
-
-startx example:
-
- startx -e bash -- $program :2 -depth 16
-
- (if startx needs to be run as root, you can su(1) to a normal
- user in the bash shell and then launch ~/.xinitrc or ~/.xsession,
- gnome-session, startkde, startxfce4, etc.)
-
-xdm example:
-
- xdm -config /usr/local/dummy/xdm-config -nodaemon
-
- where the xdm-config file has line:
-
- DisplayManager.servers: /usr/local/dummy/Xservers
-
- and /usr/local/dummy/Xservers has lines:
-
- :1 local /usr/local/dummy/Xdummy :1 -debug
- :2 local /usr/local/dummy/Xdummy :2 -debug
-
- (-debug is optional)
-
-gdm/kdm example:
-
- TBD.
-
-Root permission and x11vnc:
-
- Update: as of 12/2009 this program no longer must be run as root.
- So try it as non-root before running it as root and/or the
- following schemes.
-
- In some circumstances X server program may need to be run as root.
- If so, one could run x11vnc as root with -unixpw (it switches
- to the user that logs in) and that may be OK, some other ideas:
-
- - add this to sudo via visudo:
-
- ALL ALL = NOPASSWD: /usr/local/bin/Xdummy
-
- - use this little suid wrapper:
-/*
- * xdummy.c
- *
- cc -o ./xdummy xdummy.c
- sudo cp ./xdummy /usr/local/bin/xdummy
- sudo chown root:root /usr/local/bin/xdummy
- sudo chmod u+s /usr/local/bin/xdummy
- *
- */
-#include <unistd.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <stdio.h>
-
-int main (int argc, char *argv[]) {
- extern char **environ;
- char str[100];
- sprintf(str, "XDUMMY_UID=%d", (int) getuid());
- putenv(str);
- setuid(0);
- setgid(0);
- execv("/usr/local/bin/Xdummy", argv);
- exit(1);
- return 1;
-}
-
-
-Options:
-
- ${program}-args:
-
- -install Compile the LD_PRELOAD shared object and install it
- next to the $program script file as:
-
- $0.so
-
- When that file exists it is used as the LD_PRELOAD
- shared object without recompiling. Otherwise,
- each time $program is run the LD_PRELOAD shared
- object is compiled as a file in /tmp (or -tmpdir)
-
- If you set the environment variable
- INTERPOSE_GETUID=1 when building, then when
- $program is run as an ordinary user, the shared
- object will interpose getuid() calls and pretend
- to be root. Otherwise it doesn't pretend to
- be root.
-
- You can also set the CFLAGS environment variable
- to anything else you want on the compile cmdline.
-
- -uninstall Remove the file:
-
- $0.so
-
- The LD_PRELOAD shared object will then be compiled
- each time this program is run.
-
- The X server is not started under -install, -uninstall, or -prconf.
-
-
- :N The DISPLAY (e.g. :15) is often the first
- argument. It is passed to the real X server and
- also used by the Xdummy script as an identifier.
-
- -geom geom1[,geom2...] Take the geometry (e.g. 1024x768) or list
- of geometries and insert them into the Screen
- section of the tweaked X server config file.
- Use this to have a different geometry than the
- one(s) in the system config file.
-
- The option -geometry can be used instead of -geom;
- x11vnc calls Xdummy and Xvfb this way.
-
- -nomodelines When you specify -geom/-geometry, $program will
- create Modelines for each geometry and put them
- in the Monitor section. If you do not want this
- then supply -nomodelines.
-
- -depth n Use pixel color depth n (e.g. 8, 16, or 24). This
- makes sure the X config file has a Screen.Display
- subsection of this depth. Note this option is
- ALSO passed to the X server.
-
- -DEPTH n Same as -depth, except not passed to X server.
-
- -tmpdir dir Specify a temporary directory, owned by you and
- only writable by you. This is used in place of
- /tmp/Xdummy.\$USER/.. to place the $program.so
- shared object, tweaked config files, etc.
-
- -nonroot Run in non-root mode (working 12/2009, now default)
-
- -root Run as root (may still be needed in some
- environments.) Same as XDUMMY_RUN_AS_ROOT=1.
-
- -nosudo Do not try to use sudo(1) when re-running as root,
- use su(1) instead.
-
- -xserver path Specify the path to the Xserver to use. Default
- is to try "Xorg" first and then "XFree86". If
- those are not in \$PATH, it tries these locations:
- /usr/bin/Xorg
- /usr/X11R6/bin/Xorg
- /usr/X11R6/bin/XFree86
-
- -n Do not run the command to start the X server,
- just show the command that $program would run.
- The LD_PRELOAD shared object will be built,
- if needed. Also note any XDUMMY* environment
- variables that need to be set.
-
- -prconf Print, to stdout, the tweaked Xorg/XFree86
- config file (-config and -xf86config server
- options, respectively.) The Xserver is not
- started.
-
- -notweak Do not tweak (modify) the Xorg/XFree86 config file
- (system or server command line) at all. The -geom
- and similar config file modifications are ignored.
-
- It is up to you to make sure it is a working
- config file (e.g. "dummy" driver, etc.)
- Perhaps you want to use a file based on the
- -prconf output.
-
- -debug Extra debugging output.
-
- -strace strace(1) the Xserver process (for troubleshooting.)
- -ltrace ltrace(1) instead of strace (can be slow.)
-
- -h, -help Print out this help.
-
-
- Xserver-args:
-
- Most of the Xorg and XFree86 options will work and are simply
- passed along if you supply them. Important ones that may be
- supplied if missing:
-
- :N X Display number for server to use.
-
- vtNN Linux virtual terminal (VT) to use (a VT is currently
- still used, just not switched to and from.)
-
- -config file Driver "dummy" tweaked config file, a
- -xf86config file number of settings are tweaked besides Driver.
-
- If -config/-xf86config is not given, the system one
- (e.g. /etc/X11/xorg.conf) is used. If the system one cannot be
- found, a built-in one is used. Any settings in the config file
- that are not consistent with "dummy" mode will be overwritten
- (unless -notweak is specified.)
-
- Use -config xdummy-builtin to force usage of the builtin config.
-
- If "file" is only a basename (e.g. "xorg.dummy.conf") with no /'s,
- then no tweaking of it is done: the X server will look for that
- basename via its normal search algorithm. If the found file does
- not refer to the "dummy" driver, etc, then the X server will fail.
-
-Notes:
-
- The Xorg/XFree86 "dummy" driver is currently undocumented. It works
- well in this mode, but it is evidently not intended for end-users.
- So it could be removed or broken at any time.
-
- If the display Xserver-arg (e.g. :1) is not given, or ":" is given
- that indicates $program should try to find a free one (based on
- tcp ports.)
-
- If the display virtual terminal, VT, (e.g. vt9) is not given that
- indicates $program should try to find a free one (or guess a high one.)
-
- This program is not completely secure WRT files in /tmp (but it tries
- to a good degree.) Better is to use the -tmpdir option to supply a
- directory only writable by you. Even better is to get rid of users
- on the local machine you do not trust :-)
-
- Set XDUMMY_SET_XV=1 to turn on debugging output for this script.
-
-END
-}
-
-warn() {
- echo "$*" 1>&2
-}
-
-if [ "X$XDUMMY_SET_XV" != "X" ]; then
- set -xv
-fi
-
-if [ "X$XDUMMY_UID" = "X" ]; then
- XDUMMY_UID=`id -u`
- export XDUMMY_UID
-fi
-if [ "X$XDUMMY_UID" = "X0" ]; then
- if [ "X$SUDO_UID" != "X" ]; then
- XDUMMY_UID=$SUDO_UID
- export XDUMMY_UID
- fi
-fi
-
-# check if root=1 first:
-#
-if [ "X$XDUMMY_RUN_AS_ROOT" = "X1" ]; then
- root=1
-fi
-for arg in $*
-do
- if [ "X$arg" = "X-nonroot" ]; then
- root=""
- elif [ "X$arg" = "X-root" ]; then
- root=1
- fi
-done
-
-# See if it really needs to be run as root:
-#
-if [ "X$XDUMMY_SU_EXEC" = "X" -a "X$root" = "X1" -a "X`id -u`" != "X0" ]; then
- # this is to prevent infinite loop in case su/sudo doesn't work:
- XDUMMY_SU_EXEC=1
- export XDUMMY_SU_EXEC
-
- dosu=1
- nosudo=""
-
- for arg in $*
- do
- if [ "X$arg" = "X-nonroot" ]; then
- dosu=""
- elif [ "X$arg" = "X-nosudo" ]; then
- nosudo="1"
- elif [ "X$arg" = "X-help" ]; then
- dosu=""
- elif [ "X$arg" = "X-h" ]; then
- dosu=""
- elif [ "X$arg" = "X-install" ]; then
- dosu=""
- elif [ "X$arg" = "X-uninstall" ]; then
- dosu=""
- elif [ "X$arg" = "X-n" ]; then
- dosu=""
- elif [ "X$arg" = "X-prconf" ]; then
- dosu=""
- fi
- done
- if [ $dosu ]; then
- # we need to restart it with su/sudo:
- if type sudo > /dev/null 2>&1; then
- :
- else
- nosudo=1
- fi
- if [ "X$nosudo" = "X" ]; then
- warn "$program: supply the sudo password to restart as root:"
- if [ "X$XDUMMY_UID" != "X" ]; then
- exec sudo $0 -uid $XDUMMY_UID "$@"
- else
- exec sudo $0 "$@"
- fi
- else
- warn "$program: supply the root password to restart as root:"
- if [ "X$XDUMMY_UID" != "X" ]; then
- exec su -c "$0 -uid $XDUMMY_UID $*"
- else
- exec su -c "$0 $*"
- fi
- fi
- # DONE:
- exit
- fi
-fi
-
-# This will hold the X display, e.g. :20
-#
-disp=""
-args=""
-cmdline_config=""
-
-# Process Xdummy args:
-#
-while [ "X$1" != "X" ]
-do
- if [ "X$1" = "X-config" -o "X$1" = "X-xf86config" ]; then
- cmdline_config="$2"
- fi
- case $1 in
- ":"*) disp=$1
- ;;
- "-install") install=1; runit=""
- ;;
- "-uninstall") uninstall=1; runit=""
- ;;
- "-n") runit=""
- ;;
- "-no") runit=""
- ;;
- "-norun") runit=""
- ;;
- "-prconf") prconf=1; runit=""
- ;;
- "-notweak") notweak=1
- ;;
- "-noconf") notweak=1
- ;;
- "-nonroot") root=""
- ;;
- "-root") root=1
- ;;
- "-nosudo") nosudo=1
- ;;
- "-xserver") xserver="$2"; shift
- ;;
- "-uid") XDUMMY_UID="$2"; shift
- export XDUMMY_UID
- ;;
- "-geom") geom="$2"; shift
- ;;
- "-geometry") geom="$2"; shift
- ;;
- "-nomodelines") nomodelines=1
- ;;
- "-depth") depth="$2"; args="$args -depth $2";
- shift
- ;;
- "-DEPTH") depth="$2"; shift
- ;;
- "-tmpdir") XDUMMY_TMPDIR="$2"; shift
- ;;
- "-debug") debug=1
- ;;
- "-nodebug") debug=""
- ;;
- "-strace") strace=1
- ;;
- "-ltrace") strace=2
- ;;
- "-h") help; exit 0
- ;;
- "-help") help; exit 0
- ;;
- *) args="$args $1"
- ;;
- esac
- shift
-done
-
-# Try to get a username for use in our tmp directory, etc.
-#
-user=""
-if [ X`id -u` = "X0" ]; then
- user=root # this will also be used below for id=0
-elif [ "X$USER" != "X" ]; then
- user=$USER
-elif [ "X$LOGNAME" != "X" ]; then
- user=$LOGNAME
-fi
-
-# Keep trying...
-#
-if [ "X$user" = "X" ]; then
- user=`whoami 2>/dev/null`
-fi
-if [ "X$user" = "X" ]; then
- user=`basename "$HOME"`
-fi
-if [ "X$user" = "X" -o "X$user" = "X." ]; then
- user="u$$"
-fi
-
-if [ "X$debug" = "X1" -a "X$runit" != "X" ]; then
- echo ""
- echo "/usr/bin/env:"
- env | egrep -v '^(LS_COLORS|TERMCAP)' | sort
- echo ""
-fi
-
-# Function to compile the LD_PRELOAD shared object:
-#
-make_so() {
- # extract code embedded in this script into a tmp C file:
- n1=`grep -n '^#code_begin' $0 | head -1 | awk -F: '{print $1}'`
- n2=`grep -n '^#code_end' $0 | head -1 | awk -F: '{print $1}'`
- n1=`expr $n1 + 1`
- dn=`expr $n2 - $n1`
-
- tmp=$tdir/Xdummy.$RANDOM$$.c
- rm -f $tmp
- if [ -e $tmp -o -h $tmp ]; then
- warn "$tmp still exists."
- exit 1
- fi
- touch $tmp || exit 1
- tail -n +$n1 $0 | head -n $dn > $tmp
-
- # compile it to Xdummy.so:
- if [ -f "$SO" ]; then
- mv $SO $SO.$$
- rm -f $SO.$$
- fi
- rm -f $SO
- touch $SO
- if [ ! -f "$SO" ]; then
- SO=$tdir/Xdummy.$user.so
- warn "warning switching LD_PRELOAD shared object to: $SO"
- fi
-
- if [ -f "$SO" ]; then
- mv $SO $SO.$$
- rm -f $SO.$$
- fi
- rm -f $SO
-
- # we assume gcc:
- if [ "X$INTERPOSE_GETUID" = "X1" ]; then
- CFLAGS="$CFLAGS -DINTERPOSE_GETUID"
- fi
- echo "$program:" cc -shared -fPIC $CFLAGS -o $SO $tmp
- cc -shared -fPIC $CFLAGS -o $SO $tmp
- rc=$?
- rm -f $tmp
- if [ $rc != 0 ]; then
- warn "$program: cannot build $SO"
- exit 1
- fi
- if [ "X$debug" != "X" -o "X$install" != "X" ]; then
- warn "$program: created $SO"
- ls -l "$SO"
- fi
-}
-
-# Set tdir to tmp dir for make_so():
-if [ "X$XDUMMY_TMPDIR" != "X" ]; then
- tdir=$XDUMMY_TMPDIR
- mkdir -p $tdir
-else
- tdir="/tmp"
-fi
-
-# Handle -install/-uninstall case:
-SO=$0.so
-if [ "X$install" != "X" -o "X$uninstall" != "X" ]; then
- if [ -e "$SO" -o -h "$SO" ]; then
- warn "$program: removing $SO"
- fi
- if [ -f "$SO" ]; then
- mv $SO $SO.$$
- rm -f $SO.$$
- fi
- rm -f $SO
- if [ -e "$SO" -o -h "$SO" ]; then
- warn "warning: $SO still exists."
- exit 1
- fi
- if [ $install ]; then
- make_so
- if [ ! -f "$SO" ]; then
- exit 1
- fi
- fi
- exit 0
-fi
-
-# We need a tmp directory for the .so, tweaked config file, and for
-# redirecting filenames we cannot create (under -nonroot)
-#
-tack=""
-if [ "X$XDUMMY_TMPDIR" = "X" ]; then
- XDUMMY_TMPDIR="/tmp/Xdummy.$user"
-
- # try to tack on a unique subdir (display number or pid)
- # to allow multiple instances
- #
- if [ "X$disp" != "X" ]; then
- t0=$disp
- else
- t0=$1
- fi
- tack=`echo "$t0" | sed -e 's/^.*://'`
- if echo "$tack" | grep '^[0-9][0-9]*$' > /dev/null; then
- :
- else
- tack=$$
- fi
- if [ "X$tack" != "X" ]; then
- XDUMMY_TMPDIR="$XDUMMY_TMPDIR/$tack"
- fi
-fi
-
-tmp=$XDUMMY_TMPDIR
-if echo "$tmp" | grep '^/tmp' > /dev/null; then
- if [ "X$tmp" != "X/tmp" -a "X$tmp" != "X/tmp/" ]; then
- # clean this subdir of /tmp out, otherwise leave it...
- rm -rf $XDUMMY_TMPDIR
- if [ -e $XDUMMY_TMPDIR ]; then
- warn "$XDUMMY_TMPDIR still exists"
- exit 1
- fi
- fi
-fi
-
-mkdir -p $XDUMMY_TMPDIR
-chmod 700 $XDUMMY_TMPDIR
-if [ "X$tack" != "X" ]; then
- chmod 700 `dirname "$XDUMMY_TMPDIR"` 2>/dev/null
-fi
-
-# See if we can write something there:
-#
-tfile="$XDUMMY_TMPDIR/test.file"
-touch $tfile
-if [ ! -f "$tfile" ]; then
- XDUMMY_TMPDIR="/tmp/Xdummy.$$.$USER"
- warn "warning: setting tmpdir to $XDUMMY_TMPDIR ..."
- rm -rf $XDUMMY_TMPDIR || exit 1
- mkdir -p $XDUMMY_TMPDIR || exit 1
-fi
-rm -f $tfile
-
-export XDUMMY_TMPDIR
-
-# Compile the LD_PRELOAD shared object if needed (needs XDUMMY_TMPDIR)
-#
-if [ ! -f "$SO" ]; then
- SO="$XDUMMY_TMPDIR/Xdummy.so"
- make_so
-fi
-
-# Decide which X server to use:
-#
-if [ "X$xserver" = "X" ]; then
- if type Xorg >/dev/null 2>&1; then
- xserver="Xorg"
- elif type XFree86 >/dev/null 2>&1; then
- xserver="XFree86"
- elif -x /usr/bin/Xorg; then
- xserver="/usr/bin/Xorg"
- elif -x /usr/X11R6/bin/Xorg; then
- xserver="/usr/X11R6/bin/Xorg"
- elif -x /usr/X11R6/bin/XFree86; then
- xserver="/usr/X11R6/bin/XFree86"
- fi
- if [ "X$xserver" = "X" ]; then
- # just let it fail below.
- xserver="/usr/bin/Xorg"
- warn "$program: cannot locate a stock Xserver... assuming $xserver"
- fi
-fi
-
-# See if the binary is suid or not readable under -nonroot mode:
-#
-if [ "X$BASH_VERSION" != "X" ]; then
- xserver_path=`type -p $xserver 2>/dev/null`
-else
- xserver_path=`type $xserver 2>/dev/null | awk '{print $NF}'`
-fi
-if [ -e "$xserver_path" -a "X$root" = "X" -a "X$runit" != "X" ]; then
- if [ ! -r $xserver_path -o -u $xserver_path -o -g $xserver_path ]; then
- # XXX not quite correct with rm -rf $XDUMMY_TMPDIR ...
- # we keep on a filesystem we know root can write to.
- base=`basename "$xserver_path"`
- new="/tmp/$base.$user.bin"
- if [ -e $new ]; then
- snew=`ls -l $new | awk '{print $5}' | grep '^[0-9][0-9]*$'`
- sold=`ls -l $xserver_path | awk '{print $5}' | grep '^[0-9][0-9]*$'`
- if [ "X$snew" != "X" -a "X$sold" != "X" -a "X$sold" != "X$snew" ]; then
- warn "removing different sized copy:"
- ls -l $new $xserver_path
- rm -f $new
- fi
- fi
- if [ ! -e $new -o ! -s $new ]; then
- rm -f $new
- touch $new || exit 1
- chmod 700 $new || exit 1
- if [ ! -r $xserver_path ]; then
- warn ""
- warn "NEED TO COPY UNREADABLE $xserver_path to $new as root:"
- warn ""
- ls -l $xserver_path 1>&2
- warn ""
- warn "This only needs to be done once:"
- warn " cat $xserver_path > $new"
- warn ""
- nos=$nosudo
- if type sudo > /dev/null 2>&1; then
- :
- else
- nos=1
- fi
- if [ "X$nos" = "X1" ]; then
- warn "Please supply root passwd to 'su -c'"
- su -c "cat $xserver_path > $new"
- else
- warn "Please supply the sudo passwd if asked:"
- sudo /bin/sh -c "cat $xserver_path > $new"
- fi
- else
- warn ""
- warn "COPYING SETUID $xserver_path to $new"
- warn ""
- ls -l $xserver_path 1>&2
- warn ""
- cat $xserver_path > $new
- fi
- ls -l $new
- if [ -s $new ]; then
- :
- else
- rm -f $new
- ls -l $new
- exit 1
- fi
- warn ""
- warn "Please restart Xdummy now."
- exit 0
- fi
- if [ ! -O $new ]; then
- warn "file \"$new\" not owned by us!"
- ls -l $new
- exit 1
- fi
- xserver=$new
- fi
-fi
-
-# Work out display:
-#
-if [ "X$disp" != "X" ]; then
- :
-elif [ "X$1" != "X" ]; then
- if echo "$1" | grep '^:[0-9]' > /dev/null; then
- disp=$1
- shift
- elif [ "X$1" = "X:" ]; then
- # ":" means for us to find one.
- shift
- fi
-fi
-if [ "X$disp" = "X" -o "X$disp" = "X:" ]; then
- # try to find an open display port:
- # (tcp outdated...)
- ports=`netstat -ant | grep LISTEN | awk '{print $4}' | sed -e 's/^.*://'`
- n=0
- while [ $n -le 20 ]
- do
- port=`printf "60%02d" $n`
- if echo "$ports" | grep "^${port}\$" > /dev/null; then
- :
- else
- disp=":$n"
- warn "$program: auto-selected DISPLAY $disp"
- break
- fi
- n=`expr $n + 1`
- done
-fi
-
-# Work out which vt to use, try to find/guess an open one if necessary.
-#
-vt=""
-for arg in $*
-do
- if echo "$arg" | grep '^vt' > /dev/null; then
- vt=$arg
- break
- fi
-done
-if [ "X$vt" = "X" ]; then
- if [ "X$user" = "Xroot" ]; then
- # root can user fuser(1) to see if it is in use:
- if type fuser >/dev/null 2>&1; then
- # try /dev/tty17 thru /dev/tty32
- n=17
- while [ $n -le 32 ]
- do
- dev="/dev/tty$n"
- if fuser $dev >/dev/null 2>&1; then
- :
- else
- vt="vt$n"
- warn "$program: auto-selected VT $vt => $dev"
- break
- fi
- n=`expr $n + 1`
- done
- fi
- fi
- if [ "X$vt" = "X" ]; then
- # take a wild guess...
- vt=vt16
- warn "$program: selected fallback VT $vt"
- fi
-else
- vt=""
-fi
-
-# Decide flavor of Xserver:
-#
-stype=`basename "$xserver"`
-if echo "$stype" | grep -i xfree86 > /dev/null; then
- stype=xfree86
-else
- stype=xorg
-fi
-
-tweak_config() {
- in="$1"
- config2="$XDUMMY_TMPDIR/xdummy_modified_xconfig.conf"
- if [ "X$disp" != "X" ]; then
- d=`echo "$disp" | sed -e 's,/,,g' -e 's/:/_/g'`
- config2="$config2$d"
- fi
-
- # perl script to tweak the config file... add/delete options, etc.
- #
- env XDUMMY_GEOM=$geom \
- XDUMMY_DEPTH=$depth \
- XDUMMY_NOMODELINES=$nomodelines \
- perl > $config2 < $in -e '
- $n = 0;
- $geom = $ENV{XDUMMY_GEOM};
- $depth = $ENV{XDUMMY_DEPTH};
- $nomodelines = $ENV{XDUMMY_NOMODELINES};
- $mode_str = "";
- $videoram = "24000";
- $HorizSync = "30.0 - 130.0";
- $VertRefresh = "50.0 - 250.0";
- if ($geom ne "") {
- my $tmp = "";
- foreach $g (split(/,/, $geom)) {
- $tmp .= "\"$g\" ";
- if (!$nomodelines && $g =~ /(\d+)x(\d+)/) {
- my $w = $1;
- my $h = $2;
- $mode_str .= " Modeline \"$g\" ";
- my $dot = sprintf("%.2f", $w * $h * 70 * 1.e-6);
- $mode_str .= $dot;
- $mode_str .= " " . $w;
- $mode_str .= " " . int(1.02 * $w);
- $mode_str .= " " . int(1.10 * $w);
- $mode_str .= " " . int(1.20 * $w);
- $mode_str .= " " . $h;
- $mode_str .= " " . int($h + 1);
- $mode_str .= " " . int($h + 3);
- $mode_str .= " " . int($h + 20);
- $mode_str .= "\n";
- }
- }
- $tmp =~ s/\s*$//;
- $geom = $tmp;
- }
- while (<>) {
- if ($ENV{XDUMMY_NOTWEAK}) {
- print $_;
- next;
- }
- $n++;
- if (/^\s*#/) {
- # pass comments straight thru
- print;
- next;
- }
- if (/^\s*Section\s+(\S+)/i) {
- # start of Section
- $sect = $1;
- $sect =~ s/\W//g;
- $sect =~ y/A-Z/a-z/;
- $sects{$sect} = 1;
- print;
- next;
- }
- if (/^\s*EndSection/i) {
- # end of Section
- if ($sect eq "serverflags") {
- if (!$got_DontVTSwitch) {
- print " ##Xdummy:##\n";
- print " Option \"DontVTSwitch\" \"true\"\n";
- }
- if (!$got_AllowMouseOpenFail) {
- print " ##Xdummy:##\n";
- print " Option \"AllowMouseOpenFail\" \"true\"\n";
- }
- if (!$got_PciForceNone) {
- print " ##Xdummy:##\n";
- print " Option \"PciForceNone\" \"true\"\n";
- }
- } elsif ($sect eq "device") {
- if (!$got_Driver) {
- print " ##Xdummy:##\n";
- print " Driver \"dummy\"\n";
- }
- if (!$got_VideoRam) {
- print " ##Xdummy:##\n";
- print " VideoRam $videoram\n";
- }
- } elsif ($sect eq "screen") {
- if ($depth ne "" && !got_DefaultDepth) {
- print " ##Xdummy:##\n";
- print " DefaultDepth $depth\n";
- }
- if ($got_Monitor eq "") {
- print " ##Xdummy:##\n";
- print " Monitor \"Monitor0\"\n";
- }
- } elsif ($sect eq "monitor") {
- if (!got_HorizSync) {
- print " ##Xdummy:##\n";
- print " HorizSync $HorizSync\n";
- }
- if (!got_VertRefresh) {
- print " ##Xdummy:##\n";
- print " VertRefresh $VertRefresh\n";
- }
- if (!$nomodelines) {
- print " ##Xdummy:##\n";
- print $mode_str;
- }
- }
- $sect = "";
- print;
- next;
- }
-
- if (/^\s*SubSection\s+(\S+)/i) {
- # start of Section
- $subsect = $1;
- $subsect =~ s/\W//g;
- $subsect =~ y/A-Z/a-z/;
- $subsects{$subsect} = 1;
- if ($sect eq "screen" && $subsect eq "display") {
- $got_Modes = 0;
- }
- print;
- next;
- }
- if (/^\s*EndSubSection/i) {
- # end of SubSection
- if ($sect eq "screen") {
- if ($subsect eq "display") {
- if ($depth ne "" && !$set_Depth) {
- print " ##Xdummy:##\n";
- print " Depth\t$depth\n";
- }
- if ($geom ne "" && ! $got_Modes) {
- print " ##Xdummy:##\n";
- print " Modes\t$geom\n";
- }
- }
- }
- $subsect = "";
- print;
- next;
- }
-
- $l = $_;
- $l =~ s/#.*$//;
- if ($sect eq "serverflags") {
- if ($l =~ /^\s*Option.*DontVTSwitch/i) {
- $_ =~ s/false/true/ig;
- $got_DontVTSwitch = 1;
- }
- if ($l =~ /^\s*Option.*AllowMouseOpenFail/i) {
- $_ =~ s/false/true/ig;
- $got_AllowMouseOpenFail = 1;
- }
- if ($l =~ /^\s*Option.*PciForceNone/i) {
- $_ =~ s/false/true/ig;
- $got_PciForceNone= 1;
- }
- }
- if ($sect eq "module") {
- if ($l =~ /^\s*Load.*\b(dri|fbdevhw)\b/i) {
- $_ = "##Xdummy## $_";
- }
- }
- if ($sect eq "monitor") {
- if ($l =~ /^\s*HorizSync/i) {
- $got_HorizSync = 1;
- }
- if ($l =~ /^\s*VertRefresh/i) {
- $got_VertRefresh = 1;
- }
- }
- if ($sect eq "device") {
- if ($l =~ /^(\s*Driver)\b/i) {
- $_ = "$1 \"dummy\"\n";
- $got_Driver = 1;
- }
- if ($l =~ /^\s*VideoRam/i) {
- $got_VideoRam= 1;
- }
- }
- if ($sect eq "inputdevice") {
- if ($l =~ /^\s*Option.*\bDevice\b/i) {
- print " ##Xdummy:##\n";
- $_ = " Option \"Device\" \"/dev/dilbert$n\"\n";
- }
- }
- if ($sect eq "screen") {
- if ($l =~ /^\s*DefaultDepth\s+(\d+)/i) {
- if ($depth ne "") {
- print " ##Xdummy:##\n";
- $_ = " DefaultDepth\t$depth\n";
- }
- $got_DefaultDepth = 1;
- }
- if ($l =~ /^\s*Monitor\s+(\S+)/i) {
- $got_Monitor = $1;
- $got_Monitor =~ s/"//g;
- }
- if ($subsect eq "display") {
- if ($geom ne "") {
- if ($l =~ /^(\s*Modes)\b/i) {
- print " ##Xdummy:##\n";
- $_ = "$1 $geom\n";
- $got_Modes = 1;
- }
- }
- if ($l =~ /^\s*Depth\s+(\d+)/i) {
- my $d = $1;
- if (!$set_Depth && $depth ne "") {
- $set_Depth = 1;
- if ($depth != $d) {
- print " ##Xdummy:##\n";
- $_ = " Depth\t$depth\n";
- }
- }
- }
- }
- }
- print;
- }
- if ($ENV{XDUMMY_NOTWEAK}) {
- exit;
- }
- # create any crucial sections that are missing:
- if (! exists($sects{serverflags})) {
- print "\n##Xdummy:##\n";
- print "Section \"ServerFlags\"\n";
- print " Option \"DontVTSwitch\" \"true\"\n";
- print " Option \"AllowMouseOpenFail\" \"true\"\n";
- print " Option \"PciForceNone\" \"true\"\n";
- print "EndSection\n";
- }
- if (! exists($sects{device})) {
- print "\n##Xdummy:##\n";
- print "Section \"Device\"\n";
- print " Identifier \"Videocard0\"\n";
- print " Driver \"dummy\"\n";
- print " VideoRam $videoram\n";
- print "EndSection\n";
- }
- if (! exists($sects{monitor})) {
- print "\n##Xdummy:##\n";
- print "Section \"Monitor\"\n";
- print " Identifier \"Monitor0\"\n";
- print " HorizSync $HorizSync\n";
- print " VertRefresh $VertRefresh\n";
- print "EndSection\n";
- }
- if (! exists($sects{screen})) {
- print "\n##Xdummy:##\n";
- print "Section \"Screen\"\n";
- print " Identifier \"Screen0\"\n";
- print " Device \"Videocard0\"\n";
- if ($got_Monitor ne "") {
- print " Monitor \"$got_Monitor\"\n";
- } else {
- print " Monitor \"Monitor0\"\n";
- }
- if ($depth ne "") {
- print " DefaultDepth $depth\n";
- } else {
- print " DefaultDepth 24\n";
- }
- print " SubSection \"Display\"\n";
- print " Viewport 0 0\n";
- print " Depth 24\n";
- if ($got_Modes) {
- ;
- } elsif ($geom ne "") {
- print " Modes $geom\n";
- } else {
- print " Modes \"1280x1024\" \"1024x768\" \"800x600\"\n";
- }
- print " EndSubSection\n";
- print "EndSection\n";
- }
-';
-}
-
-# Work out config file and tweak it.
-#
-if [ "X$cmdline_config" = "X" ]; then
- :
-elif [ "X$cmdline_config" = "Xxdummy-builtin" ]; then
- :
-elif echo "$cmdline_config" | grep '/' > /dev/null; then
- :
-else
- # ignore basename only case (let server handle it)
- cmdline_config=""
- notweak=1
-fi
-
-config=$cmdline_config
-
-if [ "X$notweak" = "X1" -a "X$root" = "X" -a -f "$cmdline_config" ]; then
- # if not root we need to copy (but not tweak) the specified config.
- XDUMMY_NOTWEAK=1
- export XDUMMY_NOTWEAK
- notweak=""
-fi
-
-if [ ! $notweak ]; then
- # tweaked config will be put in $config2:
- config2=""
- if [ "X$config" = "X" ]; then
- # use the default one:
- if [ "X$stype" = "Xxorg" ]; then
- config=/etc/X11/xorg.conf
- else
- if [ -f "/etc/X11/XF86Config-4" ]; then
- config="/etc/X11/XF86Config-4"
- else
- config="/etc/X11/XF86Config"
- fi
- fi
- if [ ! -f "$config" ]; then
- for c in /etc/X11/xorg.conf /etc/X11/XF86Config-4 /etc/X11/XF86Config
- do
- if [ -f $c ]; then
- config=$c
- break
- fi
- done
- fi
- fi
-
- if [ "X$config" = "Xxdummy-builtin" ]; then
- config=""
- fi
-
- if [ ! -f "$config" ]; then
- config="$XDUMMY_TMPDIR/xorg.conf"
- warn "$program: using minimal built-in xorg.conf settings."
- cat > $config <<END
-
-Section "ServerLayout"
- Identifier "Layout0"
- Screen 0 "Screen0"
- InputDevice "Keyboard0" "CoreKeyboard"
- InputDevice "Mouse0" "CorePointer"
-EndSection
-
-Section "Files"
-EndSection
-
-Section "Module"
- Load "dbe"
- Load "extmod"
- Load "freetype"
- Load "glx"
-EndSection
-
-Section "InputDevice"
- Identifier "Mouse0"
- Driver "mouse"
- Option "Protocol" "auto"
- Option "Device" "/dev/psaux"
- Option "Emulate3Buttons" "no"
- Option "ZAxisMapping" "4 5"
-EndSection
-
-Section "InputDevice"
- Identifier "Keyboard0"
- Driver "kbd"
-EndSection
-
-Section "Monitor"
- Identifier "Monitor0"
- VendorName "Unknown"
- ModelName "Unknown"
- HorizSync 30.0 - 130.0
- VertRefresh 50.0 - 250.0
- Option "DPMS"
-EndSection
-
-Section "Device"
- Identifier "Device0"
- Driver "foovideo"
- VendorName "foovideo Corporation"
-EndSection
-
-Section "Screen"
- Identifier "Screen0"
- Device "Device0"
- Monitor "Monitor0"
- DefaultDepth 24
- SubSection "Display"
- Depth 24
- Modes "1280x1024"
- EndSubSection
-EndSection
-
-END
- fi
-
- if [ -f "$config" ]; then
- tweak_config $config
- fi
-
- # now we need to get our tweaked config file onto the command line:
- if [ "X$cmdline_config" = "X" ]; then
- # append to cmdline (FUBAR will be substituted below.)
- if [ "X$stype" = "Xxorg" ]; then
- args="$args -config FUBAR"
- else
- args="$args -xf86config FUBAR"
- fi
- fi
- if [ "X$config2" != "X" ]; then
- # or modify $args:
- c2=$config2
- if [ "X$root" = "X" ]; then
- # ordinary user cannot use absolute path.
- c2=`basename $config2`
- fi
- args=`echo "$args" | sed \
- -e "s,-config *[^ ][^ ]*,-config $c2,g" \
- -e "s,-xf86config *[^ ][^ ]*,-xf86config $c2,g"`
- fi
-fi
-
-if [ $prconf ]; then
- warn ""
- warn "Printing out the Xorg/XFree86 server config file:"
- warn ""
- if [ "X$config2" = "X" ]; then
- warn "NO CONFIG GENERATED."
- exit 1
- else
- cat "$config2"
- fi
- exit 0
-fi
-
-if [ $debug ]; then
- XDUMMY_DEBUG=1
- export XDUMMY_DEBUG
-fi
-if [ $root ]; then
- XDUMMY_ROOT=1
- export XDUMMY_ROOT
-fi
-
-# Finally, run it:
-#
-if [ "X$debug" != "X" -o "X$runit" = "X" ]; then
- if [ ! $runit ]; then
- echo ""
- echo "/usr/bin/env:"
- env | egrep -v '^(LS_COLORS|TERMCAP)' | sort
- echo ""
- echo "XDUMMY*:"
- env | grep '^XDUMMY' | sort
- echo ""
- fi
- warn ""
- warn "The command to run is:"
- warn ""
- so=$SO
- pwd=`pwd`
- if echo "$so" | grep '^\./' > /dev/null; then
- so=`echo "$so" | sed -e "s,^\.,$pwd,"`
- fi
- if echo "$so" | grep '/' > /dev/null; then
- :
- else
- so="$pwd/$so"
- fi
- warn "env LD_PRELOAD=$so $xserver $disp $args $vt"
- warn ""
- if [ ! $runit ]; then
- exit 0
- fi
-fi
-
-if [ $strace ]; then
- if [ "X$strace" = "X2" ]; then
- ltrace -f env LD_PRELOAD=$SO $xserver $disp $args $vt
- else
- strace -f env LD_PRELOAD=$SO $xserver $disp $args $vt
- fi
-else
- exec env LD_PRELOAD=$SO $xserver $disp $args $vt
-fi
-
-exit $?
-
-#########################################################################
-
-code() {
-#code_begin
-#include <stdio.h>
-#define O_ACCMODE 0003
-#define O_RDONLY 00
-#define O_WRONLY 01
-#define O_RDWR 02
-#define O_CREAT 0100 /* not fcntl */
-#define O_EXCL 0200 /* not fcntl */
-#define O_NOCTTY 0400 /* not fcntl */
-#define O_TRUNC 01000 /* not fcntl */
-#define O_APPEND 02000
-#define O_NONBLOCK 04000
-#define O_NDELAY O_NONBLOCK
-#define O_SYNC 010000
-#define O_FSYNC O_SYNC
-#define O_ASYNC 020000
-
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <linux/vt.h>
-#include <linux/kd.h>
-
-#define __USE_GNU
-#include <dlfcn.h>
-
-static char tmpdir[4096];
-static char str1[4096];
-static char str2[4096];
-
-static char devs[256][1024];
-static int debug = -1;
-static int root = -1;
-static int changed_uid = 0;
-static int saw_fonts = 0;
-static int saw_lib_modules = 0;
-
-static time_t start = 0;
-
-void check_debug(void) {
- if (debug < 0) {
- if (getenv("XDUMMY_DEBUG") != NULL) {
- debug = 1;
- } else {
- debug = 0;
- }
- /* prevent other processes using the preload: */
- putenv("LD_PRELOAD=");
- }
-}
-void check_root(void) {
- if (root < 0) {
- /* script tells us if we are root */
- if (getenv("XDUMMY_ROOT") != NULL) {
- root = 1;
- } else {
- root = 0;
- }
- }
-}
-
-void check_uid(void) {
- if (start == 0) {
- start = time(NULL);
- if (debug) fprintf(stderr, "START: %u\n", (unsigned int) start);
- return;
- } else if (changed_uid == 0) {
- if (saw_fonts || time(NULL) > start + 20) {
- if (getenv("XDUMMY_UID")) {
- int uid = atoi(getenv("XDUMMY_UID"));
- if (debug) fprintf(stderr, "SETREUID: %d saw_fonts=%d\n", uid, saw_fonts);
- if (uid >= 0) {
- /* this will simply fail in -nonroot mode: */
- setreuid(uid, -1);
- }
- }
- changed_uid = 1;
- }
- }
-}
-
-#define CHECKIT if (debug < 0) check_debug(); \
- if (root < 0) check_root(); \
- check_uid();
-
-static void set_tmpdir(void) {
- char *s;
- static int didset = 0;
- if (didset) {
- return;
- }
- s = getenv("XDUMMY_TMPDIR");
- if (! s) {
- s = "/tmp";
- }
- tmpdir[0] = '\0';
- strcat(tmpdir, s);
- strcat(tmpdir, "/");
- didset = 1;
-}
-
-static char *tmpdir_path(const char *path) {
- char *str;
- set_tmpdir();
- strcpy(str2, path);
- str = str2;
- while (*str) {
- if (*str == '/') {
- *str = '_';
- }
- str++;
- }
- strcpy(str1, tmpdir);
- strcat(str1, str2);
- return str1;
-}
-
-int open(const char *pathname, int flags, unsigned short mode) {
- int fd;
- char *store_dev = NULL;
- static int (*real_open)(const char *, int , unsigned short) = NULL;
-
- CHECKIT
- if (! real_open) {
- real_open = (int (*)(const char *, int , unsigned short))
- dlsym(RTLD_NEXT, "open");
- }
-
- if (strstr(pathname, "lib/modules/")) {
- /* not currently used. */
- saw_lib_modules = 1;
- }
-
- if (!root) {
- if (strstr(pathname, "/dev/") == pathname) {
- store_dev = strdup(pathname);
- }
- if (strstr(pathname, "/dev/tty") == pathname && strcmp(pathname, "/dev/tty")) {
- pathname = tmpdir_path(pathname);
- if (debug) fprintf(stderr, "OPEN: %s -> %s (as FIFO)\n", store_dev, pathname);
- /* we make it a FIFO so ioctl on it does not fail */
- unlink(pathname);
- mkfifo(pathname, 0666);
- } else if (0) {
- /* we used to handle more /dev files ... */
- fd = real_open(pathname, O_WRONLY|O_CREAT, 0777);
- close(fd);
- }
- }
-
- fd = real_open(pathname, flags, mode);
-
- if (debug) fprintf(stderr, "OPEN: %s %d %d fd=%d\n", pathname, flags, mode, fd);
-
- if (! root) {
- if (store_dev) {
- if (fd < 256) {
- strcpy(devs[fd], store_dev);
- }
- free(store_dev);
- }
- }
-
- return(fd);
-}
-
-int open64(const char *pathname, int flags, unsigned short mode) {
- int fd;
-
- CHECKIT
- if (debug) fprintf(stderr, "OPEN64: %s %d %d\n", pathname, flags, mode);
-
- fd = open(pathname, flags, mode);
- return(fd);
-}
-
-int rename(const char *oldpath, const char *newpath) {
- static int (*real_rename)(const char *, const char *) = NULL;
-
- CHECKIT
- if (! real_rename) {
- real_rename = (int (*)(const char *, const char *))
- dlsym(RTLD_NEXT, "rename");
- }
-
- if (debug) fprintf(stderr, "RENAME: %s %s\n", oldpath, newpath);
-
- if (root) {
- return(real_rename(oldpath, newpath));
- }
-
- if (strstr(oldpath, "/var/log") == oldpath) {
- if (debug) fprintf(stderr, "RENAME: returning 0\n");
- return 0;
- }
- return(real_rename(oldpath, newpath));
-}
-
-FILE *fopen(const char *pathname, const char *mode) {
- static FILE* (*real_fopen)(const char *, const char *) = NULL;
- char *str;
-
- if (! saw_fonts) {
- if (strstr(pathname, "/fonts/")) {
- if (strstr(pathname, "fonts.dir")) {
- saw_fonts = 1;
- } else if (strstr(pathname, "fonts.alias")) {
- saw_fonts = 1;
- }
- }
- }
-
- CHECKIT
- if (! real_fopen) {
- real_fopen = (FILE* (*)(const char *, const char *))
- dlsym(RTLD_NEXT, "fopen");
- }
-
- if (debug) fprintf(stderr, "FOPEN: %s %s\n", pathname, mode);
-
- if (strstr(pathname, "xdummy_modified_xconfig.conf")) {
- /* make our config appear to be in /etc/X11, etc. */
- char *q = strrchr(pathname, '/');
- if (q != NULL && getenv("XDUMMY_TMPDIR") != NULL) {
- strcpy(str1, getenv("XDUMMY_TMPDIR"));
- strcat(str1, q);
- if (debug) fprintf(stderr, "FOPEN: %s -> %s\n", pathname, str1);
- pathname = str1;
- }
- }
-
- if (root) {
- return(real_fopen(pathname, mode));
- }
-
- str = (char *) pathname;
- if (strstr(pathname, "/var/log") == pathname) {
- str = tmpdir_path(pathname);
- if (debug) fprintf(stderr, "FOPEN: %s -> %s\n", pathname, str);
- }
- return(real_fopen(str, mode));
-}
-
-
-#define RETURN0 if (debug) \
- {fprintf(stderr, "IOCTL: covered %d 0x%x\n", fd, req);} return 0;
-#define RETURN1 if (debug) \
- {fprintf(stderr, "IOCTL: covered %d 0x%x\n", fd, req);} return -1;
-
-int ioctl(int fd, int req, void *ptr) {
- static int closed_xf86Info_consoleFd = 0;
- static int (*real_ioctl)(int, int , void *) = NULL;
-
- CHECKIT
- if (! real_ioctl) {
- real_ioctl = (int (*)(int, int , void *))
- dlsym(RTLD_NEXT, "open");
- }
- if (debug) fprintf(stderr, "IOCTL: %d 0x%x %p\n", fd, req, ptr);
-
- /* based on xorg-x11-6.8.1-dualhead.patch */
- if (req == VT_GETMODE) {
- /* close(xf86Info.consoleFd) */
- if (0 && ! closed_xf86Info_consoleFd) {
- /* I think better not to close it... */
- close(fd);
- closed_xf86Info_consoleFd = 1;
- }
- RETURN0
- } else if (req == VT_SETMODE) {
- RETURN0
- } else if (req == VT_GETSTATE) {
- RETURN0
- } else if (req == KDSETMODE) {
- RETURN0
- } else if (req == KDSETLED) {
- RETURN0
- } else if (req == KDGKBMODE) {
- RETURN0
- } else if (req == KDSKBMODE) {
- RETURN0
- } else if (req == VT_ACTIVATE) {
- RETURN0
- } else if (req == VT_WAITACTIVE) {
- RETURN0
- } else if (req == VT_RELDISP) {
- if (ptr == (void *) 1) {
- RETURN1
- } else if (ptr == (void *) VT_ACKACQ) {
- RETURN0
- }
- }
-
- return(real_ioctl(fd, req, ptr));
-}
-
-typedef void (*sighandler_t)(int);
-#define SIGUSR1 10
-#define SIG_DFL ((sighandler_t)0)
-
-sighandler_t signal(int signum, sighandler_t handler) {
- static sighandler_t (*real_signal)(int, sighandler_t) = NULL;
-
- CHECKIT
- if (! real_signal) {
- real_signal = (sighandler_t (*)(int, sighandler_t))
- dlsym(RTLD_NEXT, "signal");
- }
-
- if (debug) fprintf(stderr, "SIGNAL: %d %p\n", signum, handler);
-
- if (signum == SIGUSR1) {
- if (debug) fprintf(stderr, "SIGNAL: skip SIGUSR1\n");
- return SIG_DFL;
- }
-
- return(real_signal(signum, handler));
-}
-
-int close(int fd) {
- static int (*real_close)(int) = NULL;
-
- CHECKIT
- if (! real_close) {
- real_close = (int (*)(int)) dlsym(RTLD_NEXT, "close");
- }
-
- if (debug) fprintf(stderr, "CLOSE: %d\n", fd);
- if (!root) {
- if (fd < 256) {
- devs[fd][0] = '\0';
- }
- }
- return(real_close(fd));
-}
-
-struct stat {
- int foo;
-};
-
-int stat(const char *path, struct stat *buf) {
- static int (*real_stat)(const char *, struct stat *) = NULL;
-
- CHECKIT
- if (! real_stat) {
- real_stat = (int (*)(const char *, struct stat *))
- dlsym(RTLD_NEXT, "stat");
- }
-
- if (debug) fprintf(stderr, "STAT: %s\n", path);
-
- return(real_stat(path, buf));
-}
-
-int stat64(const char *path, struct stat *buf) {
- static int (*real_stat64)(const char *, struct stat *) = NULL;
-
- CHECKIT
- if (! real_stat64) {
- real_stat64 = (int (*)(const char *, struct stat *))
- dlsym(RTLD_NEXT, "stat64");
- }
-
- if (debug) fprintf(stderr, "STAT64: %s\n", path);
-
- return(real_stat64(path, buf));
-}
-
-int chown(const char *path, uid_t owner, gid_t group) {
- static int (*real_chown)(const char *, uid_t, gid_t) = NULL;
-
- CHECKIT
- if (! real_chown) {
- real_chown = (int (*)(const char *, uid_t, gid_t))
- dlsym(RTLD_NEXT, "chown");
- }
-
- if (root) {
- return(real_chown(path, owner, group));
- }
-
- if (debug) fprintf(stderr, "CHOWN: %s %d %d\n", path, owner, group);
-
- if (strstr(path, "/dev") == path) {
- if (debug) fprintf(stderr, "CHOWN: return 0\n");
- return 0;
- }
-
- return(real_chown(path, owner, group));
-}
-
-extern int *__errno_location (void);
-#ifndef ENODEV
-#define ENODEV 19
-#endif
-
-int ioperm(unsigned long from, unsigned long num, int turn_on) {
- static int (*real_ioperm)(unsigned long, unsigned long, int) = NULL;
-
- CHECKIT
- if (! real_ioperm) {
- real_ioperm = (int (*)(unsigned long, unsigned long, int))
- dlsym(RTLD_NEXT, "ioperm");
- }
- if (debug) fprintf(stderr, "IOPERM: %d %d %d\n", (int) from, (int) num, turn_on);
- if (root) {
- return(real_ioperm(from, num, turn_on));
- }
- if (from == 0 && num == 1024 && turn_on == 1) {
- /* we want xf86EnableIO to fail */
- if (debug) fprintf(stderr, "IOPERM: setting ENODEV.\n");
- *__errno_location() = ENODEV;
- return -1;
- }
- return 0;
-}
-
-int iopl(int level) {
- static int (*real_iopl)(int) = NULL;
-
- CHECKIT
- if (! real_iopl) {
- real_iopl = (int (*)(int)) dlsym(RTLD_NEXT, "iopl");
- }
- if (debug) fprintf(stderr, "IOPL: %d\n", level);
- if (root) {
- return(real_iopl(level));
- }
- return 0;
-}
-
-#ifdef INTERPOSE_GETUID
-
-/*
- * we got things to work w/o pretending to be root.
- * so we no longer interpose getuid(), etc.
- */
-
-uid_t getuid(void) {
- static uid_t (*real_getuid)(void) = NULL;
- CHECKIT
- if (! real_getuid) {
- real_getuid = (uid_t (*)(void)) dlsym(RTLD_NEXT, "getuid");
- }
- if (root) {
- return(real_getuid());
- }
- if (debug) fprintf(stderr, "GETUID: 0\n");
- return 0;
-}
-uid_t geteuid(void) {
- static uid_t (*real_geteuid)(void) = NULL;
- CHECKIT
- if (! real_geteuid) {
- real_geteuid = (uid_t (*)(void)) dlsym(RTLD_NEXT, "geteuid");
- }
- if (root) {
- return(real_geteuid());
- }
- if (debug) fprintf(stderr, "GETEUID: 0\n");
- return 0;
-}
-uid_t geteuid_kludge1(void) {
- static uid_t (*real_geteuid)(void) = NULL;
- CHECKIT
- if (! real_geteuid) {
- real_geteuid = (uid_t (*)(void)) dlsym(RTLD_NEXT, "geteuid");
- }
- if (debug) fprintf(stderr, "GETEUID: 0 saw_libmodules=%d\n", saw_lib_modules);
- if (root && !saw_lib_modules) {
- return(real_geteuid());
- } else {
- saw_lib_modules = 0;
- return 0;
- }
-}
-
-uid_t getuid32(void) {
- static uid_t (*real_getuid32)(void) = NULL;
- CHECKIT
- if (! real_getuid32) {
- real_getuid32 = (uid_t (*)(void)) dlsym(RTLD_NEXT, "getuid32");
- }
- if (root) {
- return(real_getuid32());
- }
- if (debug) fprintf(stderr, "GETUID32: 0\n");
- return 0;
-}
-uid_t geteuid32(void) {
- static uid_t (*real_geteuid32)(void) = NULL;
- CHECKIT
- if (! real_geteuid32) {
- real_geteuid32 = (uid_t (*)(void)) dlsym(RTLD_NEXT, "geteuid32");
- }
- if (root) {
- return(real_geteuid32());
- }
- if (debug) fprintf(stderr, "GETEUID32: 0\n");
- return 0;
-}
-
-gid_t getgid(void) {
- static gid_t (*real_getgid)(void) = NULL;
- CHECKIT
- if (! real_getgid) {
- real_getgid = (gid_t (*)(void)) dlsym(RTLD_NEXT, "getgid");
- }
- if (root) {
- return(real_getgid());
- }
- if (debug) fprintf(stderr, "GETGID: 0\n");
- return 0;
-}
-gid_t getegid(void) {
- static gid_t (*real_getegid)(void) = NULL;
- CHECKIT
- if (! real_getegid) {
- real_getegid = (gid_t (*)(void)) dlsym(RTLD_NEXT, "getegid");
- }
- if (root) {
- return(real_getegid());
- }
- if (debug) fprintf(stderr, "GETEGID: 0\n");
- return 0;
-}
-gid_t getgid32(void) {
- static gid_t (*real_getgid32)(void) = NULL;
- CHECKIT
- if (! real_getgid32) {
- real_getgid32 = (gid_t (*)(void)) dlsym(RTLD_NEXT, "getgid32");
- }
- if (root) {
- return(real_getgid32());
- }
- if (debug) fprintf(stderr, "GETGID32: 0\n");
- return 0;
-}
-gid_t getegid32(void) {
- static gid_t (*real_getegid32)(void) = NULL;
- CHECKIT
- if (! real_getegid32) {
- real_getegid32 = (gid_t (*)(void)) dlsym(RTLD_NEXT, "getegid32");
- }
- if (root) {
- return(real_getegid32());
- }
- if (debug) fprintf(stderr, "GETEGID32: 0\n");
- return 0;
-}
-#endif
-
-#if 0
-/* maybe we need to interpose on strcmp someday... here is the template */
-int strcmp(const char *s1, const char *s2) {
- static int (*real_strcmp)(const char *, const char *) = NULL;
- CHECKIT
- if (! real_strcmp) {
- real_strcmp = (int (*)(const char *, const char *)) dlsym(RTLD_NEXT, "strcmp");
- }
- if (debug) fprintf(stderr, "STRCMP: '%s' '%s'\n", s1, s2);
- return(real_strcmp(s1, s2));
-}
-#endif
-
-#code_end
-}
projects / i3 / i3 / commitdiff