It's possible, at least on linux, if you don't mind cheating a little.

Find /proc/pid/fd/n, and readlink it. That will give you /a/ (not neccessarly the only) name of the file opened on that fd. (Careful, though, because it will sometimes give things that are not filenames, like socket:n and /foo/bar (deleted).

However, the other ideas on this thread are almost undoubtedly better.

(I know several other unixes have similar proc (or proclike) filesystems, and many of them can probably be used similarly. Win32 doesn't, but you can do internals things to get the names from the handles. I wouldn't recommend it.)

We are using here a powerful strategy of synthesis: wishful thinking. -- The Wizard Book

In reply to Re: Re: Can you delete a file by descriptor? by theorbtwo
in thread Can you delete a file by descriptor? by shotgunefx

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.