set-file-selinux-context
set-file-selinux-context is a built-in function in `C source code
'.
(set-file-selinux-context FILENAME CONTEXT)
Set SELinux context of file named FILENAME to CONTEXT.
CONTEXT should be a list (USER ROLE TYPE RANGE), where the list
elements are strings naming the components of a SELinux context.
Value is t if setting of SELinux context was successful, nil otherwise.
This function does nothing and returns nil if SELinux is disabled,
or if Emacs was not compiled with SELinux support.