124 lines
3.8 KiB
Bash
Executable File
124 lines
3.8 KiB
Bash
Executable File
#!/bin/sh
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set -e
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PROGNAME=Xsession
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OPTIONFILE=/etc/X11/Xsession.options
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[ -r "${XDG_CONFIG_HOME:-$HOME/.config}/X11/xresources" ] && USRRESOURCES=${XDG_CONFIG_HOME:-$HOME/.config}/X11/xresources || USRRESOURCES=$HOME/.Xresources
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[ -r "${XDG_CONFIG_HOME:-$HOME/.config}/X11/xsession.d" ] && SESSIONDIR=${XDG_CONFIG_HOME:-$HOME/.config}/X11/xsession.d || SESSIONDIR=/etc/X11/Xsession.d
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[ -d "${XDG_DATA_HOME:-$HOME/.local/share}/xorg/" ] && ERRFILE=${XDG_DATA_HOME:-$HOME/.local/share}/xorg/xsession-errors || ERRFILE=$HOME/.xsession-errors
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message() {
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# pretty-print messages of arbitrary length; use xmessage if it
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# is available and $DISPLAY is set
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MESSAGE="$PROGNAME: $*"
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echo "$MESSAGE" | fold -s -w ${COLUMNS:-80} >&2
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# if [ -n "$DISPLAY" ] && command -v xmessage > /dev/null 2>&1; then
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# echo "$MESSAGE" | fold -s -w ${COLUMNS:-80} | xmessage -center -file -
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# fi
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}
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message_nonl() {
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# pretty-print messages of arbitrary length (no trailing newline); use
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# xmessage if it is available and $DISPLAY is set
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MESSAGE="$PROGNAME: $*"
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echo -n "$MESSAGE" | fold -s -w ${COLUMNS:-80} >&2
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# if [ -n "$DISPLAY" ] && command -v xmessage > /dev/null 2>&1; then
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# echo -n "$MESSAGE" | fold -s -w ${COLUMNS:-80} | xmessage -center -file -
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# fi
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}
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errormsg() {
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# exit script with error
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message "$*"
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exit 1
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}
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internal_errormsg() {
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# exit script with error; essentially a "THIS SHOULD NEVER HAPPEN" message
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# One big call to message() for the sake of xmessage; if we had two then
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# the user would have dismissed the error we want reported before seeing the
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# request to report it.
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errormsg "$*" \
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"Please report the installed version of the \"x11-common\"" \
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"package and the complete text of this error message to" \
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"<debian-x@lists.debian.org>."
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}
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OPTIONS="$(
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if [ -r "$OPTIONFILE" ]; then
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cat "$OPTIONFILE"
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fi
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if [ -d /etc/X11/Xsession.options.d ]; then
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run-parts --list --regex '\.conf$' /etc/X11/Xsession.options.d | xargs -d '\n' cat
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fi
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)"
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has_option() {
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# Ensure that a later no-foo overrides an earlier foo
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if [ "$(echo "$OPTIONS" | grep -Eo "^(no-)?$1\>" | tail -n 1)" = "$1" ]; then
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return 0
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else
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return 1
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fi
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}
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# attempt to create an error file; abort if we cannot
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if (umask 077 && touch "$ERRFILE") 2>/dev/null && [ -w "$ERRFILE" ] &&
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[ ! -L "$ERRFILE" ]; then
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chmod 600 "$ERRFILE"
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elif ERRFILE=$(mktemp 2>/dev/null); then
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if ! ln -sf "$ERRFILE" "${TMPDIR:=/tmp}/xsession-$USER"; then
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message "warning: unable to symlink \"$TMPDIR/xsession-$USER\" to" \
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"\"$ERRFILE\"; look for session log/errors in" \
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"\"$TMPDIR/xsession-$USER\"."
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fi
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else
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errormsg "unable to create X session log/error file; aborting."
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fi
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# truncate ERRFILE if it is too big to avoid disk usage DoS
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if [ "$(stat -c%s \""$ERRFILE"\")" -gt 500000 ]; then
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T=$(mktemp -p "$HOME")
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tail -c 500000 "$ERRFILE" >"$T" && mv -f "$T" "$ERRFILE" || rm -f "$T"
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fi
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exec >>"$ERRFILE" 2>&1
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# sanity check; is our session script directory present?
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if [ ! -d "$SESSIONDIR" ]; then
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errormsg "no \"$SESSIONDIR\" directory found; aborting."
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fi
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# Attempt to create a file of non-zero length in /tmp; a full filesystem can
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# cause mysterious X session failures. We do not use touch, :, or test -w
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# because they won't actually create a file with contents. We also let standard
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# error from mktemp and echo go to the error file to aid the user in
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# determining what went wrong.
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WRITE_TEST=$(mktemp)
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if ! echo "*" >>"$WRITE_TEST"; then
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message "warning: unable to write to ${WRITE_TEST%/*}; X session may exit" \
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"with an error"
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fi
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rm -f "$WRITE_TEST"
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SESSIONFILES=$(run-parts --list $SESSIONDIR)
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if [ -n "$SESSIONFILES" ]; then
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set +e
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for SESSIONFILE in $SESSIONFILES; do
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message "Executing $SESSIONFILE"
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. $SESSIONFILE
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done
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set -e
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fi
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if [ -f "${XDG_CONFIG_HOME:-$HOME/.config}/X11/xprofile" ]; then
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. ${XDG_CONFIG_HOME:-$HOME/.config}/X11/xprofile
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else
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. $HOME/.xprofile
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fi
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exec dwm
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