1. 5.x includes/install.inc FILE_NOT_WRITABLE
  2. 6.x includes/install.inc FILE_NOT_WRITABLE
  3. 7.x includes/install.inc FILE_NOT_WRITABLE

File permission check -- File is not writable.

4 uses of FILE_NOT_WRITABLE
drupal_install_fix_file in includes/install.inc
Attempts to fix file permissions.
drupal_install_mkdir in includes/install.inc
Creates a directory with the specified permissions.
drupal_verify_install_file in includes/install.inc
Verifies the state of the specified file.
system_requirements in modules/system/system.install
Implements hook_requirements().

File

includes/install.inc, line 71
API functions for installing modules and themes.

Code

define('FILE_NOT_WRITABLE', 64);