晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : //lib64/perl5/Errno.pm
# -*- buffer-read-only: t -*-
#
# This file is auto-generated by ext/Errno/Errno_pm.PL.
# ***ANY*** changes here will be lost.
#

package Errno;
require Exporter;
use strict;

use Config;
"$Config{'archname'}-$Config{'osvers'}" eq
"x86_64-linux-thread-multi-4.18.0-425.3.1.el8.x86_64" or
	die "Errno architecture (x86_64-linux-thread-multi-4.18.0-425.3.1.el8.x86_64) does not match executable architecture ($Config{'archname'}-$Config{'osvers'})";

our $VERSION = "1.28";
$VERSION = eval $VERSION;
our @ISA = 'Exporter';

my %err;

BEGIN {
    %err = (
	EPERM => 1,
	ENOENT => 2,
	ESRCH => 3,
	EINTR => 4,
	EIO => 5,
	ENXIO => 6,
	E2BIG => 7,
	ENOEXEC => 8,
	EBADF => 9,
	ECHILD => 10,
	EAGAIN => 11,
	EWOULDBLOCK => 11,
	ENOMEM => 12,
	EACCES => 13,
	EFAULT => 14,
	ENOTBLK => 15,
	EBUSY => 16,
	EEXIST => 17,
	EXDEV => 18,
	ENODEV => 19,
	ENOTDIR => 20,
	EISDIR => 21,
	EINVAL => 22,
	ENFILE => 23,
	EMFILE => 24,
	ENOTTY => 25,
	ETXTBSY => 26,
	EFBIG => 27,
	ENOSPC => 28,
	ESPIPE => 29,
	EROFS => 30,
	EMLINK => 31,
	EPIPE => 32,
	EDOM => 33,
	ERANGE => 34,
	EDEADLK => 35,
	EDEADLOCK => 35,
	ENAMETOOLONG => 36,
	ENOLCK => 37,
	ENOSYS => 38,
	ENOTEMPTY => 39,
	ELOOP => 40,
	ENOMSG => 42,
	EIDRM => 43,
	ECHRNG => 44,
	EL2NSYNC => 45,
	EL3HLT => 46,
	EL3RST => 47,
	ELNRNG => 48,
	EUNATCH => 49,
	ENOCSI => 50,
	EL2HLT => 51,
	EBADE => 52,
	EBADR => 53,
	EXFULL => 54,
	ENOANO => 55,
	EBADRQC => 56,
	EBADSLT => 57,
	EBFONT => 59,
	ENOSTR => 60,
	ENODATA => 61,
	ETIME => 62,
	ENOSR => 63,
	ENONET => 64,
	ENOPKG => 65,
	EREMOTE => 66,
	ENOLINK => 67,
	EADV => 68,
	ESRMNT => 69,
	ECOMM => 70,
	EPROTO => 71,
	EMULTIHOP => 72,
	EDOTDOT => 73,
	EBADMSG => 74,
	EOVERFLOW => 75,
	ENOTUNIQ => 76,
	EBADFD => 77,
	EREMCHG => 78,
	ELIBACC => 79,
	ELIBBAD => 80,
	ELIBSCN => 81,
	ELIBMAX => 82,
	ELIBEXEC => 83,
	EILSEQ => 84,
	ERESTART => 85,
	ESTRPIPE => 86,
	EUSERS => 87,
	ENOTSOCK => 88,
	EDESTADDRREQ => 89,
	EMSGSIZE => 90,
	EPROTOTYPE => 91,
	ENOPROTOOPT => 92,
	EPROTONOSUPPORT => 93,
	ESOCKTNOSUPPORT => 94,
	ENOTSUP => 95,
	EOPNOTSUPP => 95,
	EPFNOSUPPORT => 96,
	EAFNOSUPPORT => 97,
	EADDRINUSE => 98,
	EADDRNOTAVAIL => 99,
	ENETDOWN => 100,
	ENETUNREACH => 101,
	ENETRESET => 102,
	ECONNABORTED => 103,
	ECONNRESET => 104,
	ENOBUFS => 105,
	EISCONN => 106,
	ENOTCONN => 107,
	ESHUTDOWN => 108,
	ETOOMANYREFS => 109,
	ETIMEDOUT => 110,
	ECONNREFUSED => 111,
	EHOSTDOWN => 112,
	EHOSTUNREACH => 113,
	EALREADY => 114,
	EINPROGRESS => 115,
	ESTALE => 116,
	EUCLEAN => 117,
	ENOTNAM => 118,
	ENAVAIL => 119,
	EISNAM => 120,
	EREMOTEIO => 121,
	EDQUOT => 122,
	ENOMEDIUM => 123,
	EMEDIUMTYPE => 124,
	ECANCELED => 125,
	ENOKEY => 126,
	EKEYEXPIRED => 127,
	EKEYREVOKED => 128,
	EKEYREJECTED => 129,
	EOWNERDEAD => 130,
	ENOTRECOVERABLE => 131,
	ERFKILL => 132,
	EHWPOISON => 133,
    );
    # Generate proxy constant subroutines for all the values.
    # Well, almost all the values. Unfortunately we can't assume that at this
    # point that our symbol table is empty, as code such as if the parser has
    # seen code such as C<exists &Errno::EINVAL>, it will have created the
    # typeglob.
    # Doing this before defining @EXPORT_OK etc means that even if a platform is
    # crazy enough to define EXPORT_OK as an error constant, everything will
    # still work, because the parser will upgrade the PCS to a real typeglob.
    # We rely on the subroutine definitions below to update the internal caches.
    # Don't use %each, as we don't want a copy of the value.
    foreach my $name (keys %err) {
        if ($Errno::{$name}) {
            # We expect this to be reached fairly rarely, so take an approach
            # which uses the least compile time effort in the common case:
            eval "sub $name() { $err{$name} }; 1" or die $@;
        } else {
            $Errno::{$name} = \$err{$name};
        }
    }
}

our @EXPORT_OK = keys %err;

our %EXPORT_TAGS = (
    POSIX => [qw(
	E2BIG EACCES EADDRINUSE EADDRNOTAVAIL EAFNOSUPPORT EAGAIN EALREADY
	EBADF EBUSY ECHILD ECONNABORTED ECONNREFUSED ECONNRESET EDEADLK
	EDESTADDRREQ EDOM EDQUOT EEXIST EFAULT EFBIG EHOSTDOWN EHOSTUNREACH
	EINPROGRESS EINTR EINVAL EIO EISCONN EISDIR ELOOP EMFILE EMLINK
	EMSGSIZE ENAMETOOLONG ENETDOWN ENETRESET ENETUNREACH ENFILE ENOBUFS
	ENODEV ENOENT ENOEXEC ENOLCK ENOMEM ENOPROTOOPT ENOSPC ENOSYS ENOTBLK
	ENOTCONN ENOTDIR ENOTEMPTY ENOTSOCK ENOTTY ENXIO EOPNOTSUPP EPERM
	EPFNOSUPPORT EPIPE EPROTONOSUPPORT EPROTOTYPE ERANGE EREMOTE ERESTART
	EROFS ESHUTDOWN ESOCKTNOSUPPORT ESPIPE ESRCH ESTALE ETIMEDOUT
	ETOOMANYREFS ETXTBSY EUSERS EWOULDBLOCK EXDEV
    )],
);

sub TIEHASH { bless \%err }

sub FETCH {
    my (undef, $errname) = @_;
    return "" unless exists $err{$errname};
    my $errno = $err{$errname};
    return $errno == $! ? $errno : 0;
}

sub STORE {
    require Carp;
    Carp::confess("ERRNO hash is read only!");
}

# This is the true return value
*CLEAR = *DELETE = \*STORE; # Typeglob aliasing uses less space

sub NEXTKEY {
    each %err;
}

sub FIRSTKEY {
    my $s = scalar keys %err;	# initialize iterator
    each %err;
}

sub EXISTS {
    my (undef, $errname) = @_;
    exists $err{$errname};
}

sub _tie_it {
    tie %{$_[0]}, __PACKAGE__;
}

__END__

=head1 NAME

Errno - System errno constants

=head1 SYNOPSIS

    use Errno qw(EINTR EIO :POSIX);

=head1 DESCRIPTION

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

On Windows, C<Errno> also defines and conditionally exports all the
Winsock error constants defined in your system F<WinError.h> include
file. These are included in a second export tag, C<:WINSOCK>.

C<Errno> also makes C<%!> magic such that each element of C<%!> has a
non-zero value only if C<$!> is set to that value. For example:

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

If a specified constant C<EFOO> does not exist on the system, C<$!{EFOO}>
returns C<"">.  You may use C<exists $!{EFOO}> to check whether the
constant is available on the system.

Perl automatically loads C<Errno> the first time you use C<%!>, so you don't
need an explicit C<use>.

=head1 CAVEATS

Importing a particular constant may not be very portable, because the
import will fail on platforms that do not have that constant.  A more
portable way to set C<$!> to a valid value is to use:

    if (exists &Errno::EFOO) {
        $! = &Errno::EFOO;
    }

=head1 AUTHOR

Graham Barr <gbarr@pobox.com>

=head1 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.

=cut

# ex: set ro:

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