/var/lib/tex-common/fmtutil-cnf/texlive/texlive-math-extra.cnf is in texlive-math-extra 2015.20160320-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | amstex pdftex - -translate-file=cp227.tcx *amstex.ini
|