From 024a0607d799a9be8a9699a112b15e2c98cd8e11 Mon Sep 17 00:00:00 2001
From: Postmodern <postmodern.mod3@gmail.com>
Date: Sat, 1 Feb 2025 23:33:15 -0800
Subject: [PATCH] Check the write permissions of `$install_dir` (closes
 #464,#326).

---
 bin/ruby-install | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/bin/ruby-install b/bin/ruby-install
index 17d7a3c3..ba6d7cd9 100755
--- a/bin/ruby-install
+++ b/bin/ruby-install
@@ -23,6 +23,10 @@ if [[ $no_reinstall -eq 1 ]] && [[ -x "$install_dir/bin/ruby" ]]; then
 	exit
 fi
 
+if ! check_write_permissions "$install_dir"; then
+	fail "Cannot write to the installation directory: $install_dir"
+fi
+
 log "Installing $ruby $ruby_version into $install_dir ..."
 
 pre_install || fail "Pre-install tasks failed!"