From b968741db7c1cdc6e3d4489f0991c0c51278aad9 Mon Sep 17 00:00:00 2001
From: Yuchen Pei <id@ypei.org>
Date: Sun, 26 May 2024 15:11:45 +1000
Subject: [bash] ensure xdg_runtime_dir

https://unix.stackexchange.com/questions/476963/how-to-create-delete-xdg-runtime-dir-at-login-logoff
---
 misc/.bashrc | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/misc/.bashrc b/misc/.bashrc
index 115dab5..95079eb 100644
--- a/misc/.bashrc
+++ b/misc/.bashrc
@@ -208,6 +208,26 @@ export QT_IM_MODULE=ibus
 #fix small vlc interface
 export QT_AUTO_SCREEN_SCALE_FACTOR=0
 
+# ensure $XDG_RUNTIME_DIR is set
+if [ -z "$XDG_RUNTIME_DIR" ]; then  # It's not already set
+  XDG_RUNTIME_DIR=/run/user/$UID  # Try systemd created path
+  if [ ! -d "$XDG_RUNTIME_DIR" ]; then
+    # systemd-created directory doesn't exist
+    XDG_RUNTIME_DIR=/tmp/$USER-runtime
+    if [ ! -d "$XDG_RUNTIME_DIR" ]; then  # Doesn't already exist
+      mkdir -m 0700 "$XDG_RUNTIME_DIR"
+    fi
+  fi
+fi
+# Check dir has got the correct type, ownership, and permissions
+if ! [[ -d "$XDG_RUNTIME_DIR" && -O "$XDG_RUNTIME_DIR" &&
+    "$(stat -c '%a' "$XDG_RUNTIME_DIR")" = 700 ]]; then
+  echo "\$XDG_RUNTIME_DIR: permissions problem with $XDG_RUNTIME_DIR:" >&2
+  ls -ld "$XDG_RUNTIME_DIR" >&2
+  XDG_RUNTIME_DIR=$(mktemp -d /tmp/"$USER"-runtime-XXXXXX)
+  echo "Set \$XDG_RUNTIME_DIR=$XDG_RUNTIME_DIR" >&2
+fi
+
 # start the agent automatically and make sure that only one
 # ssh-agent process runs at a time
 if ! pgrep -u "$USER" ssh-agent > /dev/null; then
-- 
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