/usr/share/emacs/site-lisp/ is in elpa-irony 1.2.0-4.
This file is owned by root:root, with mode 0o755.
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/usr/share/emacs/site-lisp/elpa-src/
/usr/share/emacs/site-lisp/elpa-src/irony-1.2.0/
/usr/share/emacs/site-lisp/elpa-src/irony-1.2.0/irony-autoloads.el
/usr/share/emacs/site-lisp/elpa-src/irony-1.2.0/irony-cdb-clang-complete.el
/usr/share/emacs/site-lisp/elpa-src/irony-1.2.0/irony-cdb-json.el
/usr/share/emacs/site-lisp/elpa-src/irony-1.2.0/irony-cdb-libclang.el
/usr/share/emacs/site-lisp/elpa-src/irony-1.2.0/irony-cdb.el
/usr/share/emacs/site-lisp/elpa-src/irony-1.2.0/irony-completion.el
/usr/share/emacs/site-lisp/elpa-src/irony-1.2.0/irony-diagnostics.el
/usr/share/emacs/site-lisp/elpa-src/irony-1.2.0/irony-iotask.el
/usr/share/emacs/site-lisp/elpa-src/irony-1.2.0/irony-pkg.el
/usr/share/emacs/site-lisp/elpa-src/irony-1.2.0/irony-snippet.el
/usr/share/emacs/site-lisp/elpa-src/irony-1.2.0/irony.el