backdrop_check_module in includes/install.inc

Checks a module's requirements.

field_system_info_alter in modules/field/field.module

Implements hook_system_info_alter().

module_invoke in includes/module.inc

Invokes a hook in a particular module.

node_hook in modules/node/node.module

Determines whether a node hook exists.

node_modules_disabled in modules/node/node.module

Implements hook_modules_disabled().

search_data in modules/search/search.module

Performs a search by calling hook_search_execute().

system_get_module_admin_tasks in modules/system/system.module

Generate a list of tasks offered by a specified module.