updater.rb in rubygems-update-2.7.7

- old
+ new

@@ -31,11 +31,13 @@
         Dir.mktmpdir("bundler-compact-index-") do |local_temp_dir|
           local_temp_path = Pathname.new(local_temp_dir).join(local_path.basename)
 
           # first try to fetch any new bytes on the existing file
           if retrying.nil? && local_path.file?
-            FileUtils.cp local_path, local_temp_path
+            SharedHelpers.filesystem_access(local_temp_path) do
+              FileUtils.cp local_path, local_temp_path
+            end
             headers["If-None-Match"] = etag_for(local_temp_path)
             headers["Range"] =
               if local_temp_path.size.nonzero?
                 # Subtract a byte to ensure the range won't be empty.
                 # Avoids 416 (Range Not Satisfiable) responses.
@@ -76,9 +78,16 @@
             raise MisMatchedChecksumError.new(remote_path, response_etag, etag_for(local_temp_path))
           end
 
           update(local_path, remote_path, :retrying)
         end
+      rescue Errno::EACCES
+        raise Bundler::PermissionError,
+          "Bundler does not have write access to create a temp directory " \
+          "within #{Dir.tmpdir}. Bundler must have write access to your " \
+          "systems temp directory to function properly. "
+      rescue Zlib::GzipFile::Error
+        raise Bundler::HTTPError
       end
 
       def etag_for(path)
         sum = checksum_for_file(path)
         sum ? %("#{sum}") : nil