From 498d222976975f53dea885cfe43ef0f805abd412 Mon Sep 17 00:00:00 2001 From: Christian Beier Date: Wed, 3 Sep 2014 20:54:39 +0200 Subject: Remove x11vnc subdir. The new x11vnc repo is at https://github.com/LibVNC/x11vnc. --- x11vnc/misc/Xdummy | 1930 ---------------------------------------------------- 1 file changed, 1930 deletions(-) delete mode 100755 x11vnc/misc/Xdummy (limited to 'x11vnc/misc/Xdummy') diff --git a/x11vnc/misc/Xdummy b/x11vnc/misc/Xdummy deleted file mode 100755 index 638a7b3..0000000 --- a/x11vnc/misc/Xdummy +++ /dev/null @@ -1,1930 +0,0 @@ -#!/bin/sh -# ---------------------------------------------------------------------- -# Copyright (C) 2005-2010 Karl J. Runge -# 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 . -# ---------------------------------------------------------------------- -# -# -# 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> - - (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 -#include -#include -#include - -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 > $config < /dev/null; then - so=`echo "$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 -#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 -#include -#include - -#include -#include - -#define __USE_GNU -#include - -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 -} -- cgit v1.1