- NAME
- SYNOPSIS
- DESCRIPTION
- AUTHOR
- COPYRIGHT

# NAME

Errno - System errno constants

# SYNOPSIS

        use Errno qw(EINTR EIO :POSIX);

# DESCRIPTION

Errno defines and conditionally exports all the error constants defined in your system `errno.h` include file. It has a single export tag, :POSIX, which will export all POSIX defined error numbers.

Errno also makes `%!` magic such that each element of `%!` has a non-zero value only if `$!` is set to that value, eg

        use Errno;

        unless (open(FH, "/fangorn/spouse")) {
            if ($!{ENOENT}) {
                warn "Get a wife!\n";
            } else {
                warn "This path is barred: $!";
            }
        }

# AUTHOR

Graham Barr <gbarr@pobox.com>

# COPYRIGHT

Copyright (c) 1997-8 Graham Barr. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.