diff options
Diffstat (limited to '.config/login.d/02_xdg_runtime_dir.sh')
| -rw-r--r-- | .config/login.d/02_xdg_runtime_dir.sh | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/.config/login.d/02_xdg_runtime_dir.sh b/.config/login.d/02_xdg_runtime_dir.sh index 6700669..864eadd 100644 --- a/.config/login.d/02_xdg_runtime_dir.sh +++ b/.config/login.d/02_xdg_runtime_dir.sh @@ -4,22 +4,23 @@ if [ -z "$XDG_RUNTIME_DIR" ] && shopt -q login_shell && type flock &>/dev/null; then _diy_xdg_runtime_login() { export XDG_RUNTIME_DIR="$XDG_CACHE_HOME/xdg-runtime-dir/$HOSTNAME" - # There's a race condition here, between the `ln -s` and `flock`. - # But it's not like I'll be hammering a box with logins. - if [ ! -d "$XDG_RUNTIME_DIR" ]; then - local tmp="$(mktemp -d --tmpdir -- "${USER}@${HOSTNAME}-runtime.XXXXXXXXXX")" - mkdir -p -- "$XDG_CACHE_HOME/xdg-runtime-dir" - ln -sfT -- "$tmp" "$XDG_RUNTIME_DIR" - fi if ! [ /dev/fd/7 -ef "$XDG_CACHE_HOME/xdg-runtime-dir/.lock" ]; then exec 7>"$XDG_CACHE_HOME/xdg-runtime-dir/.lock" - if flock -sn 7; then + if flock -xn 7; then + if [ ! -d "$XDG_RUNTIME_DIR" ]; then + local tmp="$(mktemp -d --tmpdir -- "${USER}@${HOSTNAME}-runtime.XXXXXXXXXX")" + mkdir -p -- "$XDG_CACHE_HOME/xdg-runtime-dir" + ln -sfT -- "$tmp" "$XDG_RUNTIME_DIR" + fi # Unfortunately this doesn't survive across exec(1). trap _diy_xdg_runtime_logout EXIT + flock -sn 7 fi fi } _diy_xdg_runtime_logout() { + exec 7>&- + exec 7>"$XDG_CACHE_HOME/xdg-runtime-dir/.lock" if flock -xn 7; then rm -rf -- "$(readlink "$XDG_RUNTIME_DIR")" fi |