ckeditor5_image_upload in core/modules/ckeditor5/ckeditor5.pages.inc

Menu callback; Saves images uploaded via copy/paste into the editor.

ckeditor_image_upload in core/modules/ckeditor/ckeditor.pages.inc

Menu callback; Saves images uploaded via copy/paste into the editor.

file_managed_file_save_upload in core/modules/file/file.module

Saves any files that have been uploaded into a managed_file element.

form_example_tutorial_10_validate in modules/examples/form_example/form_example_tutorial.inc

Validate handler for form_example_tutorial_10().

installer_manager_download_project in core/modules/installer/installer.manager.inc

Downloads a project given a project url.

locale_translate_import_form_submit in core/modules/locale/locale.bulk.inc

Process the locale import form submission.

system_site_information_settings_validate in core/modules/system/system.admin.inc

Validates the submitted site-information form.

user_validate_picture in core/modules/user/user.module

Validates an image uploaded by a user.

_file_test_form_submit in core/modules/simpletest/tests/file_test.module

Process the upload.

_image_field_default_image_validate in core/modules/image/image.field.inc

Element validation function for setting a default image.