kinit/fstype/jfs_superblock.h

/*
 *   Copyright (C) International Business Machines Corp., 2000-2003
 *
 *   This program is free software;  you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program;  if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#ifndef	_H_JFS_SUPERBLOCK
#define _H_JFS_SUPERBLOCK

struct timestruc_t {
	__le32 tv_sec;
	__le32 tv_nsec;
};

/*
 * make the magic number something a human could read
 */
#define JFS_MAGIC 	"JFS1"	/* Magic word */

#define JFS_VERSION	2	/* Version number: Version 2 */

#define LV_NAME_SIZE	11	/* MUST BE 11 for OS/2 boot sector */

/*
 *	aggregate superblock
 *
 * The name superblock is too close to super_block, so the name has been
 * changed to jfs_superblock.  The utilities are still using the old name.
 */
struct jfs_superblock {
	char s_magic[4];	/* 4: magic number */
	__le32 s_version;	/* 4: version number */

	__le64 s_size;		/* 8: aggregate size in hardware/LVM blocks;
				 * VFS: number of blocks
				 */
	__le32 s_bsize;		/* 4: aggregate block size in bytes;
				 * VFS: fragment size
				 */
	__le16 s_l2bsize;	/* 2: log2 of s_bsize */
	__le16 s_l2bfactor;	/* 2: log2(s_bsize/hardware block size) */
	__le32 s_pbsize;	/* 4: hardware/LVM block size in bytes */
	__le16 s_l2pbsize;	/* 2: log2 of s_pbsize */
	__le16 pad;		/* 2: padding necessary for alignment */

	__le32 s_agsize;	/* 4: allocation group size in aggr. blocks */

	__le32 s_flag;		/* 4: aggregate attributes:
				 *    see jfs_filsys.h
				 */
	__le32 s_state;		/* 4: mount/unmount/recovery state:
				 *    see jfs_filsys.h
				 */
	__le32 s_compress;	/* 4: > 0 if data compression */

	__le64 s_ait2;		/* 8: first extent of secondary
				 *    aggregate inode table
				 */

	__le64 s_aim2;		/* 8: first extent of secondary
				 *    aggregate inode map
				 */
	__le32 s_logdev;	/* 4: device address of log */
	__le32 s_logserial;	/* 4: log serial number at aggregate mount */
	__le64 s_logpxd;	/* 8: inline log extent */

	__le64 s_fsckpxd;	/* 8: inline fsck work space extent */

	struct timestruc_t s_time;	/* 8: time last updated */

	__le32 s_fsckloglen;	/* 4: Number of filesystem blocks reserved for
				 *    the fsck service log.
				 *    N.B. These blocks are divided among the
				 *         versions kept.  This is not a per
				 *         version size.
				 *    N.B. These blocks are included in the
				 *         length field of s_fsckpxd.
				 */
	char s_fscklog;		/* 1: which fsck service log is most recent
				 *    0 => no service log data yet
				 *    1 => the first one
				 *    2 => the 2nd one
				 */
	char s_fpack[11];	/* 11: file system volume name
				 *     N.B. This must be 11 bytes to
				 *          conform with the OS/2 BootSector
				 *          requirements
				 *          Only used when s_version is 1
				 */

	/* extendfs() parameter under s_state & FM_EXTENDFS */
	__le64 s_xsize;		/* 8: extendfs s_size */
	__le64 s_xfsckpxd;	/* 8: extendfs fsckpxd */
	__le64 s_xlogpxd;	/* 8: extendfs logpxd */
	/* - 128 byte boundary - */

	char s_uuid[16];	/* 16: 128-bit uuid for volume */
	char s_label[16];	/* 16: volume label */
	char s_loguuid[16];	/* 16: 128-bit uuid for log device */

};

#endif /*_H_JFS_SUPERBLOCK */
1	niro	532	/*
2			* Copyright (C) International Business Machines Corp., 2000-2003
3			*
4			* This program is free software; you can redistribute it and/or modify
5			* it under the terms of the GNU General Public License as published by
6			* the Free Software Foundation; either version 2 of the License, or
7			* (at your option) any later version.
8			*
9			* This program is distributed in the hope that it will be useful,
10			* but WITHOUT ANY WARRANTY; without even the implied warranty of
11			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
12			* the GNU General Public License for more details.
13			*
14			* You should have received a copy of the GNU General Public License
15			* along with this program; if not, write to the Free Software
16			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17			*/
18			#ifndef _H_JFS_SUPERBLOCK
19			#define _H_JFS_SUPERBLOCK
20
21			struct timestruc_t {
22			__le32 tv_sec;
23			__le32 tv_nsec;
24			};
25
26			/*
27			* make the magic number something a human could read
28			*/
29			#define JFS_MAGIC "JFS1" /* Magic word */
30
31			#define JFS_VERSION 2 /* Version number: Version 2 */
32
33			#define LV_NAME_SIZE 11 /* MUST BE 11 for OS/2 boot sector */
34
35			/*
36			* aggregate superblock
37			*
38			* The name superblock is too close to super_block, so the name has been
39			* changed to jfs_superblock. The utilities are still using the old name.
40			*/
41			struct jfs_superblock {
42			char s_magic[4]; /* 4: magic number */
43			__le32 s_version; /* 4: version number */
44
45			__le64 s_size; /* 8: aggregate size in hardware/LVM blocks;
46			* VFS: number of blocks
47			*/
48			__le32 s_bsize; /* 4: aggregate block size in bytes;
49			* VFS: fragment size
50			*/
51			__le16 s_l2bsize; /* 2: log2 of s_bsize */
52			__le16 s_l2bfactor; /* 2: log2(s_bsize/hardware block size) */
53			__le32 s_pbsize; /* 4: hardware/LVM block size in bytes */
54			__le16 s_l2pbsize; /* 2: log2 of s_pbsize */
55			__le16 pad; /* 2: padding necessary for alignment */
56
57			__le32 s_agsize; /* 4: allocation group size in aggr. blocks */
58
59			__le32 s_flag; /* 4: aggregate attributes:
60			* see jfs_filsys.h
61			*/
62			__le32 s_state; /* 4: mount/unmount/recovery state:
63			* see jfs_filsys.h
64			*/
65			__le32 s_compress; /* 4: > 0 if data compression */
66
67			__le64 s_ait2; /* 8: first extent of secondary
68			* aggregate inode table
69			*/
70
71			__le64 s_aim2; /* 8: first extent of secondary
72			* aggregate inode map
73			*/
74			__le32 s_logdev; /* 4: device address of log */
75			__le32 s_logserial; /* 4: log serial number at aggregate mount */
76			__le64 s_logpxd; /* 8: inline log extent */
77
78			__le64 s_fsckpxd; /* 8: inline fsck work space extent */
79
80			struct timestruc_t s_time; /* 8: time last updated */
81
82			__le32 s_fsckloglen; /* 4: Number of filesystem blocks reserved for
83			* the fsck service log.
84			* N.B. These blocks are divided among the
85			* versions kept. This is not a per
86			* version size.
87			* N.B. These blocks are included in the
88			* length field of s_fsckpxd.
89			*/
90			char s_fscklog; /* 1: which fsck service log is most recent
91			* 0 => no service log data yet
92			* 1 => the first one
93			* 2 => the 2nd one
94			*/
95			char s_fpack[11]; /* 11: file system volume name
96			* N.B. This must be 11 bytes to
97			* conform with the OS/2 BootSector
98			* requirements
99			* Only used when s_version is 1
100			*/
101
102			/* extendfs() parameter under s_state & FM_EXTENDFS */
103			__le64 s_xsize; /* 8: extendfs s_size */
104			__le64 s_xfsckpxd; /* 8: extendfs fsckpxd */
105			__le64 s_xlogpxd; /* 8: extendfs logpxd */
106			/* - 128 byte boundary - */
107
108			char s_uuid[16]; /* 16: 128-bit uuid for volume */
109			char s_label[16]; /* 16: volume label */
110			char s_loguuid[16]; /* 16: 128-bit uuid for log device */
111
112			};
113
114			#endif /_H_JFS_SUPERBLOCK /