From 08d4683f25f1039d1c303f5febb398e3204b545f Mon Sep 17 00:00:00 2001
From: Damien Lachaume <135982616+dlachaume@users.noreply.github.com>
Date: Wed, 30 Jul 2025 11:28:13 +0200
Subject: [PATCH] fix: add step to check write permission on install path

Also moved the creation of the install path after argument parsing to avoid creating a directory with an undefined value.
---
 mithril-install.sh | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/mithril-install.sh b/mithril-install.sh
index df830619561..cbdc0e0e7e8 100755
--- a/mithril-install.sh
+++ b/mithril-install.sh
@@ -95,14 +95,19 @@ esac
 # Set temp file
 TEMP_FILE="${INSTALL_PATH}/temp.json"
 
-# Create the install path if it doesn't exist
-mkdir -p "$INSTALL_PATH"
-
 # Check if node and path are provided
 if [ -z "$NODE" ] || [ -z "$DISTRIBUTION" ] || [ -z "$INSTALL_PATH" ]; then
   usage
 fi
 
+# Create the install path if it doesn't exist
+mkdir -p "$INSTALL_PATH"
+
+# Check if install path is writable
+if [ ! -w "$INSTALL_PATH" ]; then
+  error_exit "Error: The specified install path '$INSTALL_PATH' is not writable."
+fi
+
 # Validate node
 if [ "$NODE" != "mithril-signer" ] && [ "$NODE" != "mithril-aggregator" ] && [ "$NODE" != "mithril-client" ]; then
   echo "Invalid node: $NODE"