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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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* Name : qnx4_fs.h
* Author : Richard Frowijn
* Function : qnx4 global filesystem definitions
* History : 23-03-1998 created
*/
#ifndef _LINUX_QNX4_FS_H
#define _LINUX_QNX4_FS_H
#include <linux/types.h>
#include <linux/qnxtypes.h>
#include <linux/magic.h>
#define QNX4_ROOT_INO 1
#define QNX4_MAX_XTNTS_PER_XBLK 60
/* for di_status */
#define QNX4_FILE_USED 0x01
#define QNX4_FILE_MODIFIED 0x02
#define QNX4_FILE_BUSY 0x04
#define QNX4_FILE_LINK 0x08
#define QNX4_FILE_INODE 0x10
#define QNX4_FILE_FSYSCLEAN 0x20
#define QNX4_I_MAP_SLOTS 8
#define QNX4_Z_MAP_SLOTS 64
#define QNX4_VALID_FS 0x0001 /* Clean fs. */
#define QNX4_ERROR_FS 0x0002 /* fs has errors. */
#define QNX4_BLOCK_SIZE 0x200 /* blocksize of 512 bytes */
#define QNX4_BLOCK_SIZE_BITS 9 /* blocksize shift */
#define QNX4_DIR_ENTRY_SIZE 0x040 /* dir entry size of 64 bytes */
#define QNX4_DIR_ENTRY_SIZE_BITS 6 /* dir entry size shift */
#define QNX4_XBLK_ENTRY_SIZE 0x200 /* xblk entry size */
#define QNX4_INODES_PER_BLOCK 0x08 /* 512 / 64 */
/* for filenames */
#define QNX4_SHORT_NAME_MAX 16
#define QNX4_NAME_MAX 48
/*
* This is the original qnx4 inode layout on disk.
*/
struct qnx4_inode_entry {
char di_fname[QNX4_SHORT_NAME_MAX];
qnx4_off_t di_size;
qnx4_xtnt_t di_first_xtnt;
__le32 di_xblk;
__le32 di_ftime;
__le32 di_mtime;
__le32 di_atime;
__le32 di_ctime;
qnx4_nxtnt_t di_num_xtnts;
qnx4_mode_t di_mode;
qnx4_muid_t di_uid;
qnx4_mgid_t di_gid;
qnx4_nlink_t di_nlink;
__u8 di_zero[4];
qnx4_ftype_t di_type;
__u8 di_status;
};
struct qnx4_link_info {
char dl_fname[QNX4_NAME_MAX];
__le32 dl_inode_blk;
__u8 dl_inode_ndx;
__u8 dl_spare[10];
__u8 dl_status;
};
struct qnx4_xblk {
__le32 xblk_next_xblk;
__le32 xblk_prev_xblk;
__u8 xblk_num_xtnts;
__u8 xblk_spare[3];
__le32 xblk_num_blocks;
qnx4_xtnt_t xblk_xtnts[QNX4_MAX_XTNTS_PER_XBLK];
char xblk_signature[8];
qnx4_xtnt_t xblk_first_xtnt;
};
struct qnx4_super_block {
struct qnx4_inode_entry RootDir;
struct qnx4_inode_entry Inode;
struct qnx4_inode_entry Boot;
struct qnx4_inode_entry AltBoot;
};
#endif