lxdm-svn/Xsession

   1 #!/bin/bash
   2
   3 # use bash for "exec -l", howto run login shell by /bin/sh ?
   4 PROGNAME=/etc/lxdm/Xsession
   5
   6 message () {
   7   # pretty-print messages of arbitrary length; use xmessage if it
   8   # is available and $DISPLAY is set
   9   MESSAGE="$PROGNAME: $*"
  10   echo "$MESSAGE" | fold -s -w ${COLUMNS:-80} >&2
  11   if [ -n "$DISPLAY" ] && which xmessage > /dev/null 2>&1; then
  12     echo "$MESSAGE" | fold -s -w ${COLUMNS:-80} | xmessage -center -file -
  13   fi
  14 }
  15
  16 message_nonl () {
  17   # pretty-print messages of arbitrary length (no trailing newline); use
  18   # xmessage if it is available and $DISPLAY is set
  19   MESSAGE="$PROGNAME: $*"
  20   echo -n "$MESSAGE" | fold -s -w ${COLUMNS:-80} >&2;
  21   if [ -n "$DISPLAY" ] && which xmessage > /dev/null 2>&1; then
  22     echo -n "$MESSAGE" | fold -s -w ${COLUMNS:-80} | xmessage -center -file -
  23   fi
  24 }
  25
  26 errormsg () {
  27   # exit script with error
  28   message "$*"
  29   exit 1
  30 }
  31
  32 # attempt to create an error file; abort if we cannot
  33 ERRFILE=$HOME/.xsession-errors
  34 if (umask 077 && touch "$ERRFILE") 2> /dev/null && [ -w "$ERRFILE" ] &&
  35   [ ! -L "$ERRFILE" ]; then
  36   chmod 600 "$ERRFILE"
  37 elif ERRFILE=$(tempfile 2> /dev/null); then
  38   if ! ln -sf "$ERRFILE" "${TMPDIR:=/tmp}/xsession-$USER"; then
  39     message "warning: unable to symlink \"$TMPDIR/xsession-$USER\" to" \
  40              "\"$ERRFILE\"; look for session log/errors in" \
  41              "\"$TMPDIR/xsession-$USER\"."
  42   fi
  43 else
  44   errormsg "unable to create X session log/error file; aborting."
  45 fi
  46 echo -n >"$ERRFILE" 2>&1
  47 exec >>"$ERRFILE" 2>&1
  48
  49 # attempt to launch an xsession
  50 if [ $# -eq 1 -a -n "$1" ]; then
  51         # previously saved or default session
  52         LXSESSION=$(which $1 >/dev/null 2>&1)
  53         if [ -z "$LXSESSION" ]; then
  54                 if [ -x /usr/bin/startxfce4 ]; then
  55                         # try startxfce4
  56                         LXSESSION=/usr/bin/startxfce4
  57                 elif [ -x $HOME/.xsession ]; then
  58                         # user's default
  59                         LXSESSION=$HOME/.xsession
  60                 fi
  61         fi
  62 fi
  63
  64 if [ -x /etc/X11/xinit/xinitrc-common ]; then
  65 # fedora
  66         . /etc/X11/xinit/xinitrc-common
  67         if ! [ -z "$XDG_SESSION_COOKIE" ]; then
  68                 CK_XINIT_SESSION=
  69         elif [ -x /usr/bin/ck-launch-session -a -z "$CK_XINIT_SESSION" ]; then
  70                 CK_XINIT_SESSION="/usr/bin/ck-launch-session"
  71         fi
  72         exec -l $SHELL -c "$CK_XINIT_SESSION \"$LXSESSION\""
  73 elif [ -x /etc/X11/xinit/Xsession ]; then
  74 # fedora
  75         exec /etc/X11/xinit/Xsession $LXSESSION
  76 elif [ -x /etc/X11/Xsession ]; then
  77 # debian, mandriva, ubuntu
  78         exec /etc/X11/Xsession $LXSESSION
  79 elif [ -x /etc/X11/xinit/xinitrc ]; then
  80 #suse
  81         export WINDOWMANAGER=$LXSESSION
  82         exec -l $SHELL -c /etc/X11/xinitrc
  83 else
  84 # unknown, user should custom /etc/lxdm/xinitrc self
  85         if [ -x /etc/lxdm/xinitrc ]; then
  86                 . /etc/lxdm/xinitrc
  87         fi
  88         if ! [ -z "$XDG_SESSION_COOKIE" ]; then
  89                 CK_XINIT_SESSION=
  90         elif [ -x /usr/bin/ck-launch-session ]; then
  91                 CK_XINIT_SESSION="/usr/bin/ck-launch-session"
  92         fi
  93         exec -l $SHELL -c "$CK_XINIT_SESSION \"$LXSESSION\""
  94 fi