In a multiple file LaTeX document, is there a way to tag each page with the file that generated it?

Question

I've got a LaTeX document that's build from many smaller files. When I'm editing text or formulas I usually look for some characteristic text and do something like:

find -name "*.tex" > t
grep -n 'text of interest' `cat t` | tee v
vim -q v

I see that there's a currfile package. I'd like to know if there's a way that I could use the \currfilename command in that package to stamp the margin with the filename (and/or path), or perhaps even just to generate a footnote.

EDIT: I found a way to do this in a standalone example, and that's posted below as a self-answer, which I initially thought to be sufficient. However, that answer used fancyhdr, and I'm using the classicthesis template which uses scrpage2, so a fancyhdr solution doesn't work. I've been able to make updates to classicthesis.sty to show the filenames in the chapter and section headers using \currfilepath, but would really like this to be a page level footer (one that I'd eventually make conditional on the drafting flag).

This is the scrpage2 section from classicthesis that I'd like to modify:

% ********************************************************************
% headlines
% ********************************************************************
\PassOptionsToPackage{automark}{scrpage2}
  \RequirePackage{scrpage2} % provides headers and footers (KOMA Script)
    \clearscrheadings
    \setheadsepline{0pt}
    \ifthenelse{\boolean{@nochapters}}%
        {\relax}%
        {\renewcommand{\chaptermark}[1]{\markboth{\spacedlowsmallcaps{#1}}{\spacedlowsmallcaps{#1}}}}
    \renewcommand{\sectionmark}[1]{\markright{\thesection\enspace\spacedlowsmallcaps{#1}}}
    \lehead{\mbox{\llap{\small\thepage\kern2em}\headmark\hfil}}
    \rohead{\mbox{\hfil{\headmark}\rlap{\small\kern2em\thepage}}}
    \renewcommand{\headfont}{\small}
%    \DeclareRobustCommand{\fixBothHeadlines}[2]{} % <--- ToDo
    % hack to get the content headlines right (thanks, Lorenzo!)
     \def\toc@heading{%
        \ifthenelse{\boolean{@nochapters}}%
        {\section*{\contentsname}}%nochapters
        {\chapter*{\contentsname}}%chapters
        \@mkboth{\spacedlowsmallcaps{\contentsname}}{\spacedlowsmallcaps{\contentsname}}}

Answer 1

It's perhaps poor form to answer my own question, but I found a mechanism for this in the following question:

Add logo on each page.

The following example shows how things fit together

\documentclass{article}
\usepackage{fancyhdr}
\usepackage{lipsum}
\usepackage{currfile}
\pagestyle{fancy}
\lhead{}
\chead{}
\rhead{}
\lfoot{}
\cfoot{\thepage}
\rfoot{\currfilepath}
\renewcommand\headrulewidth{0pt}
\renewcommand\footrulewidth{0pt}
\begin{document}
\lipsum
\clearpage
\lipsum
\clearpage
\include{a/b/f1}
\include{a/b/f2}
\include{a/b/f3}
\include{a/b/f4}
\include{a/b/f5}
\include{a/b/f6}
\end{document}

where f1, f2, f3, ... all contain the following

\lipsum
\clearpage

As desired, I see a/b/f1.tex, a/b/f2.tex on all the \include generated pages (and the main .tex filename on the one that does the \include's).