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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/* Definitions for Rose packet radio address family.
Copyright (C) 1998-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* What follows is copied from the 2.1.93 <linux/rose.h>. */
#ifndef _NETROSE_ROSE_H
#define _NETROSE_ROSE_H 1
#include <sys/socket.h>
#include <netax25/ax25.h>
/* Socket level values. */
#define SOL_ROSE 260
/* These are the public elements of the Linux kernel Rose
implementation. For kernel AX.25 see the file ax25.h. This file
requires ax25.h for the definition of the ax25_address structure. */
#define ROSE_MTU 251
#define ROSE_MAX_DIGIS 6
#define ROSE_DEFER 1
#define ROSE_T1 2
#define ROSE_T2 3
#define ROSE_T3 4
#define ROSE_IDLE 5
#define ROSE_QBITINCL 6
#define ROSE_HOLDBACK 7
#define SIOCRSGCAUSE (SIOCPROTOPRIVATE + 0)
#define SIOCRSSCAUSE (SIOCPROTOPRIVATE + 1)
#define SIOCRSL2CALL (SIOCPROTOPRIVATE + 2)
#define SIOCRSSL2CALL (SIOCPROTOPRIVATE + 2)
#define SIOCRSACCEPT (SIOCPROTOPRIVATE + 3)
#define SIOCRSCLRRT (SIOCPROTOPRIVATE + 4)
#define SIOCRSGL2CALL (SIOCPROTOPRIVATE + 5)
#define SIOCRSGFACILITIES (SIOCPROTOPRIVATE + 6)
#define ROSE_DTE_ORIGINATED 0x00
#define ROSE_NUMBER_BUSY 0x01
#define ROSE_INVALID_FACILITY 0x03
#define ROSE_NETWORK_CONGESTION 0x05
#define ROSE_OUT_OF_ORDER 0x09
#define ROSE_ACCESS_BARRED 0x0B
#define ROSE_NOT_OBTAINABLE 0x0D
#define ROSE_REMOTE_PROCEDURE 0x11
#define ROSE_LOCAL_PROCEDURE 0x13
#define ROSE_SHIP_ABSENT 0x39
typedef struct
{
char rose_addr[5];
} rose_address;
struct sockaddr_rose
{
sa_family_t srose_family;
rose_address srose_addr;
ax25_address srose_call;
int srose_ndigis;
ax25_address srose_digi;
};
struct full_sockaddr_rose
{
sa_family_t srose_family;
rose_address srose_addr;
ax25_address srose_call;
unsigned int srose_ndigis;
ax25_address srose_digis[ROSE_MAX_DIGIS];
};
struct rose_route_struct
{
rose_address address;
unsigned short int mask;
ax25_address neighbour;
char device[16];
unsigned char ndigis;
ax25_address digipeaters[AX25_MAX_DIGIS];
};
struct rose_cause_struct
{
unsigned char cause;
unsigned char diagnostic;
};
struct rose_facilities_struct
{
rose_address source_addr, dest_addr;
ax25_address source_call, dest_call;
unsigned char source_ndigis, dest_ndigis;
ax25_address source_digis[ROSE_MAX_DIGIS];
ax25_address dest_digis[ROSE_MAX_DIGIS];
unsigned int rand;
rose_address fail_addr;
ax25_address fail_call;
};
#endif /* netrose/rose.h */