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Drop fragile XDG_RUNTIME_DIR support

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An XDG runtime directory cannot be provided reliably by the shell,
because it's supposed to have the same lifetime as the user's login
session, and the shell doesn't have a reliable way to keep track of that
lifetime. There are probably nonportable ways to get a conforming
directory, such as making a request to PAM, but PAM is supposed to set
XDG_RUNTIME_DIR itself anyway and also doesn't exist on Macs, which I
use most of the time.

My configuration isn't actually using XDG_RUNTIME_DIR anyway, so I don't
want to provide the misleading impression that a runtime directory with
proper behaviour conforming to the specification is definitely
available.
This commit is contained in:
Danielle McLean 2021-09-22 10:22:09 +10:00
parent 2018821e9f
commit f06071e7c7
Signed by: 00dani
GPG key ID: 9DDE1EDE01E3A605
2 changed files with 1 additions and 14 deletions
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2
config/zsh/logout/xdg-clear
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@ -1,2 +0,0 @@
#! zsh
(( $SHLVL == 1 && $(w -h $LOGNAME | wc -l) == 1 )) && rm -rf $XDG_RUNTIME_DIR 2>/dev/null

13
zshenv
View file

@ -4,18 +4,7 @@
: ${XDG_DATA_HOME:=~/.local/share} : ${XDG_DATA_HOME:=~/.local/share}
: ${XDG_STATE_HOME:=~/.local/state} : ${XDG_STATE_HOME:=~/.local/state}
# For XDG_RUNTIME_DIR, pick a temporary directory - the spec actually export XDG_CONFIG_HOME XDG_CACHE_HOME XDG_DATA_HOME XDG_STATE_HOME
# *requires* that it's destroyed when the user logs out, so that's handled by a
# file in zlogout. The reason for suffixing /xdg-$UID is that TMPDIR does not
# necessarily belong to the current user exclusively (although it does under
# MacOS and PAM). This is especially true if $TMPDIR isn't set at all and /tmp
# is used!
[[ -z $XDG_RUNTIME_DIR ]] && XDG_RUNTIME_DIR=${${TMPDIR-/tmp}%/}/xdg-$UID
if ! [[ -d $XDG_RUNTIME_DIR ]]; then
mkdir -p $XDG_RUNTIME_DIR
chmod 0700 $XDG_RUNTIME_DIR
fi
export XDG_CONFIG_HOME XDG_CACHE_HOME XDG_DATA_HOME XDG_STATE_HOME XDG_RUNTIME_DIR
# The real zsh config lives in XDG_CONFIG_HOME! ;) # The real zsh config lives in XDG_CONFIG_HOME! ;)
: ${ZDOTDIR:=$XDG_CONFIG_HOME/zsh} : ${ZDOTDIR:=$XDG_CONFIG_HOME/zsh}