From 91b3164ee5950c9716e043fee22146e0269d4edd Mon Sep 17 00:00:00 2001 From: Dion Hulse Date: Wed, 10 Jan 2018 06:09:51 +0000 Subject: [PATCH] Upgrade: When deleting old files, if deletion fails attempt to empty the file instead. Props joemcgill, dd32. Fixes #42963 for trunk. git-svn-id: https://develop.svn.wordpress.org/trunk@42433 602fd350-edb4-49c9-b593-d223f7449a82 --- src/wp-admin/includes/update-core.php | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/src/wp-admin/includes/update-core.php b/src/wp-admin/includes/update-core.php index ec909143dd..fc6681acb3 100644 --- a/src/wp-admin/includes/update-core.php +++ b/src/wp-admin/includes/update-core.php @@ -1143,7 +1143,11 @@ function update_core( $from, $to ) { if ( ! $wp_filesystem->exists( $old_file ) ) { continue; } - $wp_filesystem->delete( $old_file, true ); + + // If the file isn't deleted, try writing an empty string to the file instead. + if ( ! $wp_filesystem->delete( $old_file, true ) && $wp_filesystem->is_file( $old_file ) ) { + $wp_filesystem->put_contents( $old_file, '' ); + } } // Remove any Genericons example.html's from the filesystem