曾与蒿藜同雨露，한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.终随松柏到冰霜.かつては雑草やヨモギと共に雨や露を分かち合っていたが、今では松やヒノキと共に霜や雪に耐えている。曾与蒿藜同雨露，Once sharing rain and dew with weeds and wormwood, now enduring frost and snow with pines and cypresses.终随松柏到冰霜.曾与蒿藜同雨露한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.，终随松柏到冰霜.譖ｾ荳手珍阯懷酔髮ｨ髴ｲ�檎ｻ磯囂譚ｾ譟丞芦蜀ｰ髴�曾与蒿藜同雨露，鏇句笌钂胯棞鍚岄洦闇诧紝缁堥殢鏉炬煆鍒板啺闇�终随松柏到冰霜.曾与蒿藜同雨露，한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.终随松柏到冰霜.曾与蒿藜同雨露，终随松柏到冰霜. rahbord-ins.ir - GrazzMean-Shell
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: /usr/include/ext2fs/ [ drwxr-xr-x ]
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name : qcow2.h 
/*
 * qcow2.h --- structures and function prototypes for qcow2.c to generate
 * qcow2 formatted disk images.  This format is used originally by QEMU
 * for virtual machines, and stores the filesystem data on disk in a
 * packed format to avoid creating sparse image files that need lots of
 * seeking to read and write.
 *
 * The qcow2 format supports zlib compression, but that is not yet
 * implemented.
 *
 * It is possible to directly mount a qcow2 image using qemu-nbd:
 *
 * [root]# modprobe nbd max_part=63
 * [root]# qemu-nbd -c /dev/nbd0 image.img
 * [root]# mount /dev/nbd0p1 /mnt/qemu
 *
 * Format details at http://people.gnome.org/~markmc/qcow-image-format.html
 *
 * Copyright (C) 2010 Red Hat, Inc., Lukas Czerner <lczerner@redhat.com>
 *
 * %Begin-Header%
 * This file may be redistributed under the terms of the GNU Public
 * License.
 * %End-Header%
 */

/* Number of l2 tables in memory before writeback */
#define L2_CACHE_PREALLOC	512


#define QCOW_MAGIC (('Q' << 24) | ('F' << 16) | ('I' << 8) | 0xfb)
#define QCOW_VERSION		2
#define QCOW_OFLAG_COPIED	(1LL << 63)
#define QCOW_OFLAG_COMPRESSED	(1LL << 62)

#define QCOW_COMPRESSED		1
#define QCOW_ENCRYPTED		2

struct ext2_qcow2_hdr {
	__u32	magic;
	__u32	version;

	__u64	backing_file_offset;
	__u32	backing_file_size;

	__u32	cluster_bits;
	__u64	size;
	__u32	crypt_method;

	__u32	l1_size;
	__u64	l1_table_offset;

	__u64	refcount_table_offset;
	__u32	refcount_table_clusters;

	__u32	nb_snapshots;
	__u64	snapshots_offset;
};

typedef struct ext2_qcow2_l2_table L2_CACHE_HEAD;

struct ext2_qcow2_l2_table {
	__u32		l1_index;
	__u64		offset;
	__u64		*data;
	L2_CACHE_HEAD	*next;
};

struct ext2_qcow2_l2_cache {
	L2_CACHE_HEAD	*used_head;
	L2_CACHE_HEAD	*used_tail;
	L2_CACHE_HEAD	*free_head;
	__u32		free;
	__u32		count;
	__u64		next_offset;
};

struct ext2_qcow2_refcount {
	__u64	*refcount_table;
	__u64	refcount_table_offset;
	__u64	refcount_block_offset;

	__u32	refcount_table_clusters;
	__u32	refcount_table_index;
	__u32	refcount_block_index;

	__u16	*refcount_block;
};

struct ext2_qcow2_image {
	int	fd;
	struct	ext2_qcow2_hdr		*hdr;
	struct	ext2_qcow2_l2_cache	*l2_cache;
	struct	ext2_qcow2_refcount	refcount;
	__u32	cluster_size;
	__u32	cluster_bits;
	__u32	l1_size;
	__u32	l2_size;

	__u64	*l1_table;
	__u64	l2_offset;
	__u64	l1_offset;
	__u64	image_size;
};

/* Function prototypes */

/* qcow2.c */

/* Functions for converting qcow2 image into raw image */
struct ext2_qcow2_hdr *qcow2_read_header(int);
int qcow2_write_raw_image(int, int, struct ext2_qcow2_hdr *);
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