Cactus treats a directory "configs/FOO/ThornList" as an empty thornlist file

Issue #2573 new
Roland Haas created an issue

Perl lets one open a directory with the regular open command but then reports no content in it ie it shows up as an empty file. Eg.


use strict;
use warnings;

open(my $FH, "<", "empty") or die;
print "$FH\n";
while(<$FH>) {
  print $_;
close $FH;

will work without error after a mkdir empty.

The suggested solution seems to be to use Perl’s -f operator to check for file type first. Eg something like:

-f "empty" && open(my $FH, "<", "empty") or die;

which I verified to fail if empty is a directory or a symbolic link to a directory but works fine for files and symbolic links to files.

This actually happened to someone “in the wild”, so it not quite hypothetical.

Comments (0)

  1. Log in to comment