Errno

Errno(3)               Perl Programmers Reference Guide               Errno(3)



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.










3rd Berkeley Distribution    perl 5.005, patch 02                     Errno(3)