Suppose I provide a Perl function:

    sub fileread($) { my ($relpath) = @_; ... }

and I have a directory path:

    my $dir = '/path/to/some/dir';

and then I want to execute a system command which will start a subprocess and wait for it to complete:

    system(...);

I want to set it up so that whenever a file within $dir (or any of its subdirectories) is accessed by the subprocess, the fileread function is called with the relative path of the file that was accessed. For example if the subprocess reads /path/to/some/dir/foo/bar, than fileread("foo/bar") should be called. If there is also some way of determining the type of access it made (read, write, delete, create, etc), even better.

Anyone know of any CPAN modules that could help? I am working on Linux BTW if there is no cross-platform solution and only a Linux-specific solution? Approximate solutions are also welcome.

Thanks in advance, Andrew.

In reply to Callback on file access by tomazos

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.