From 0bfcf1a76204a92c908eed67b5a7659c416bd040 Mon Sep 17 00:00:00 2001
From: Michael Stapelberg <michael@stapelberg.de>
Date: Wed, 25 Sep 2013 19:33:28 +0200
Subject: [PATCH] Improve error message when $XDG_RUNTIME_DIR is not writable

---
 libi3/get_process_filename.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libi3/get_process_filename.c b/libi3/get_process_filename.c
index 630e3d1c..941d4439 100644
--- a/libi3/get_process_filename.c
+++ b/libi3/get_process_filename.c
@@ -15,6 +15,7 @@
 #include <sys/types.h>
 #include <pwd.h>
 #include <unistd.h>
+#include <err.h>
 
 #include "libi3.h"
 
@@ -35,6 +36,9 @@ char *get_process_filename(const char *prefix) {
             struct stat buf;
             if (stat(dir, &buf) != 0) {
                 if (mkdir(dir, 0700) == -1) {
+                    warn("Could not mkdir(%s)", dir);
+                    errx(EXIT_FAILURE, "Check permissions of $XDG_RUNTIME_DIR = '%s'",
+                         getenv("XDG_RUNTIME_DIR"));
                     perror("mkdir()");
                     return NULL;
                 }
-- 
2.39.5