From b88f1a84bfa944b5890728ea20c8ebd888fb9b3f Mon Sep 17 00:00:00 2001
From: Marina Glancy <marina@moodle.com>
Date: Mon, 22 Feb 2021 16:17:21 +0100
Subject: [PATCH] MDL-70901 core: @ no longer masks errors in PHP 8.0

---
 backup/util/loggers/file_logger.class.php   | 2 +-
 lib/classes/task/file_temp_cleanup_task.php | 6 +++++-
 lib/filestorage/file_system_filedir.php     | 5 ++++-
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/backup/util/loggers/file_logger.class.php b/backup/util/loggers/file_logger.class.php
index d1a7554eeb2..97ae661339a 100644
--- a/backup/util/loggers/file_logger.class.php
+++ b/backup/util/loggers/file_logger.class.php
@@ -97,7 +97,7 @@ class file_logger extends base_logger {
         } else {
             $content = $prefix . str_repeat('&nbsp;&nbsp;', $depth) . htmlentities($message, ENT_QUOTES, 'UTF-8') . '<br/>' . PHP_EOL;
         }
-        if (false === fwrite($this->fhandle, $content)) {
+        if (!is_resource($this->fhandle) || (false === fwrite($this->fhandle, $content))) {
             throw new base_logger_exception('error_writing_file', $this->fullpath);
         }
         return true;
diff --git a/lib/classes/task/file_temp_cleanup_task.php b/lib/classes/task/file_temp_cleanup_task.php
index 05bfd5cccbd..d4971dc84d3 100644
--- a/lib/classes/task/file_temp_cleanup_task.php
+++ b/lib/classes/task/file_temp_cleanup_task.php
@@ -90,7 +90,11 @@ class file_temp_cleanup_task extends scheduled_task {
             } else {
                 // Return the time modified to the original date only for real files.
                 if ($iter->isDir() && !$iter->isDot()) {
-                    touch($node, $modifieddateobject[$node]);
+                    try {
+                        @touch($node, $modifieddateobject[$node]);
+                    } catch (\Throwable $t) {
+                        null;
+                    }
                 }
             }
         }
diff --git a/lib/filestorage/file_system_filedir.php b/lib/filestorage/file_system_filedir.php
index 3b0c509d96d..8c26da3b6dd 100644
--- a/lib/filestorage/file_system_filedir.php
+++ b/lib/filestorage/file_system_filedir.php
@@ -395,7 +395,10 @@ class file_system_filedir extends file_system {
         }
         rename($hashfile.'.tmp', $hashfile);
         chmod($hashfile, $this->filepermissions); // Fix permissions if needed.
-        @unlink($hashfile.'.tmp'); // Just in case anything fails in a weird way.
+        if (file_exists($hashfile.'.tmp')) {
+            // Just in case anything fails in a weird way.
+            @unlink($hashfile.'.tmp');
+        }
         ignore_user_abort($prev);
 
         return array($contenthash, $filesize, $newfile);