From ca50abdd5d77747a2506d15c248dd239712153f2 Mon Sep 17 00:00:00 2001
From: Marina Glancy <marina@moodle.com>
Date: Tue, 29 Oct 2013 16:56:20 +1100
Subject: [PATCH] MDL-41337 files: Fixed bug with accidental delete of the root
 directory

---
 lib/db/upgrade.php | 35 +++++++++++++++++++++++++++++++++++
 lib/filelib.php    |  2 +-
 version.php        |  2 +-
 3 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/lib/db/upgrade.php b/lib/db/upgrade.php
index 0d3cce710ff..aaedc61a134 100644
--- a/lib/db/upgrade.php
+++ b/lib/db/upgrade.php
@@ -2206,5 +2206,40 @@ function xmldb_main_upgrade($oldversion) {
         upgrade_main_savepoint(true, 2013051402.06);
     }
 
+    if ($oldversion < 2013051402.10) {
+        // Find all fileareas that have missing root folder entry and add the root folder entry.
+        if (empty($CFG->filesrootrecordsfixed)) {
+            $sql = "SELECT distinct f1.contextid, f1.component, f1.filearea, f1.itemid
+                FROM {files} f1 left JOIN {files} f2
+                    ON f1.contextid = f2.contextid
+                    AND f1.component = f2.component
+                    AND f1.filearea = f2.filearea
+                    AND f1.itemid = f2.itemid
+                    AND f2.filename = '.'
+                    AND f2.filepath = '/'
+                WHERE (f1.component <> 'user' or f1.filearea <> 'draft')
+                and f2.id is null";
+            $rs = $DB->get_recordset_sql($sql);
+            $defaults = array('filepath' => '/',
+                            'filename' => '.',
+                            'userid' => $USER->id,
+                            'filesize' => 0,
+                            'timecreated' => time(),
+                            'timemodified' => time(),
+                            'contenthash' => sha1(''));
+            foreach ($rs as $r) {
+                $pathhash = sha1("/$r->contextid/$r->component/$r->filearea/$r->itemid".'/.');
+                $DB->insert_record('files', (array)$r + $defaults +
+                        array('pathnamehash' => $pathhash));
+            }
+            $rs->close();
+            // To skip running the same script on the upgrade to the next major release.
+            set_config('filesrootrecordsfixed', 1);
+        }
+
+        // Main savepoint reached.
+        upgrade_main_savepoint(true, 2013051402.10);
+    }
+
     return true;
 }
diff --git a/lib/filelib.php b/lib/filelib.php
index 186abd33fa0..6c50e1721f1 100644
--- a/lib/filelib.php
+++ b/lib/filelib.php
@@ -807,7 +807,7 @@ function file_save_draft_area_files($draftitemid, $contextid, $component, $filea
         $newhashes = array();
         $filecount = 0;
         foreach ($draftfiles as $file) {
-            if (!$options['subdirs'] && ($file->get_filepath() !== '/' or $file->is_directory())) {
+            if (!$options['subdirs'] && $file->get_filepath() !== '/') {
                 continue;
             }
             if (!$allowreferences && $file->is_external_file()) {
diff --git a/version.php b/version.php
index 8e210040ebe..6843fc4e474 100644
--- a/version.php
+++ b/version.php
@@ -29,7 +29,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$version  = 2013051402.09;              // 20130514      = branching date YYYYMMDD - do not modify!
+$version  = 2013051402.10;              // 20130514      = branching date YYYYMMDD - do not modify!
                                         //         RR    = release increments - 00 in DEV branches
                                         //           .XX = incremental changes