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v6.9.4
  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3 *   Copyright (C) International Business Machines Corp., 2000-2003
  4 */
  5#ifndef _H_JFS_FILSYS
  6#define _H_JFS_FILSYS
  7
  8/*
  9 *	jfs_filsys.h
 10 *
 11 * file system (implementation-dependent) constants
 12 *
 13 * refer to <limits.h> for system wide implementation-dependent constants
 14 */
 15
 16/*
 17 *	 file system option (superblock flag)
 18 */
 19
 20/* directory option */
 21#define JFS_UNICODE	0x00000001	/* unicode name */
 22
 23/* mount time flags for error handling */
 24#define JFS_ERR_REMOUNT_RO 0x00000002	/* remount read-only */
 25#define JFS_ERR_CONTINUE   0x00000004	/* continue */
 26#define JFS_ERR_PANIC      0x00000008	/* panic */
 
 27
 28/* Quota support */
 29#define	JFS_USRQUOTA	0x00000010
 30#define	JFS_GRPQUOTA	0x00000020
 31
 32/* mount time flag to disable journaling to disk */
 33#define JFS_NOINTEGRITY 0x00000040
 34
 35/* mount time flag to enable TRIM to ssd disks */
 36#define JFS_DISCARD     0x00000080
 37
 38/* commit option */
 39#define	JFS_COMMIT	0x00000f00	/* commit option mask */
 40#define	JFS_GROUPCOMMIT	0x00000100	/* group (of 1) commit */
 41#define	JFS_LAZYCOMMIT	0x00000200	/* lazy commit */
 42#define	JFS_TMPFS	0x00000400	/* temporary file system -
 43					 * do not log/commit:
 44					 * Never implemented
 45					 */
 46
 47/* log logical volume option */
 48#define	JFS_INLINELOG	0x00000800	/* inline log within file system */
 49#define JFS_INLINEMOVE	0x00001000	/* inline log being moved */
 50
 51/* Secondary aggregate inode table */
 52#define JFS_BAD_SAIT	0x00010000	/* current secondary ait is bad */
 53
 54/* sparse regular file support */
 55#define JFS_SPARSE	0x00020000	/* sparse regular file */
 56
 57/* DASD Limits		F226941 */
 58#define JFS_DASD_ENABLED 0x00040000	/* DASD limits enabled */
 59#define	JFS_DASD_PRIME	0x00080000	/* Prime DASD usage on boot */
 60
 61/* big endian flag */
 62#define	JFS_SWAP_BYTES	0x00100000	/* running on big endian computer */
 63
 64/* Directory index */
 65#define JFS_DIR_INDEX	0x00200000	/* Persistent index for */
 66
 67/* platform options */
 68#define JFS_LINUX	0x10000000	/* Linux support */
 69#define JFS_DFS		0x20000000	/* DCE DFS LFS support */
 70/*	Never implemented */
 71
 72#define JFS_OS2		0x40000000	/* OS/2 support */
 73/*	case-insensitive name/directory support */
 74
 75#define JFS_AIX		0x80000000	/* AIX support */
 76
 77/*
 78 *	buffer cache configuration
 79 */
 80/* page size */
 81#ifdef PSIZE
 82#undef PSIZE
 83#endif
 84#define	PSIZE		4096	/* page size (in byte) */
 85#define	L2PSIZE		12	/* log2(PSIZE) */
 86#define	POFFSET		4095	/* offset within page */
 87
 88/* buffer page size */
 89#define BPSIZE	PSIZE
 90
 91/*
 92 *	fs fundamental size
 93 *
 94 * PSIZE >= file system block size >= PBSIZE >= DISIZE
 95 */
 96#define	PBSIZE		512	/* physical block size (in byte) */
 97#define	L2PBSIZE	9	/* log2(PBSIZE) */
 98
 99#define DISIZE		512	/* on-disk inode size (in byte) */
100#define L2DISIZE	9	/* log2(DISIZE) */
101
102#define IDATASIZE	256	/* inode inline data size */
103#define	IXATTRSIZE	128	/* inode inline extended attribute size */
104
105#define XTPAGE_SIZE	4096
106#define log2_PAGESIZE	12
107
108#define IAG_SIZE	4096
109#define IAG_EXTENT_SIZE 4096
110#define	INOSPERIAG	4096	/* number of disk inodes per iag */
111#define	L2INOSPERIAG	12	/* l2 number of disk inodes per iag */
112#define INOSPEREXT	32	/* number of disk inode per extent */
113#define L2INOSPEREXT	5	/* l2 number of disk inode per extent */
114#define	IXSIZE		(DISIZE * INOSPEREXT)	/* inode extent size */
115#define	INOSPERPAGE	8	/* number of disk inodes per 4K page */
116#define	L2INOSPERPAGE	3	/* log2(INOSPERPAGE) */
117
118#define	IAGFREELIST_LWM	64
119
120#define INODE_EXTENT_SIZE	IXSIZE	/* inode extent size */
121#define NUM_INODE_PER_EXTENT	INOSPEREXT
122#define NUM_INODE_PER_IAG	INOSPERIAG
123
124#define MINBLOCKSIZE		512
125#define L2MINBLOCKSIZE		9
126#define MAXBLOCKSIZE		4096
127#define L2MAXBLOCKSIZE		12
128#define	MAXFILESIZE		((s64)1 << 52)
129
130#define JFS_LINK_MAX		0xffffffff
131
132/* Minimum number of bytes supported for a JFS partition */
133#define MINJFS			(0x1000000)
134#define MINJFSTEXT		"16"
135
136/*
137 * file system block size -> physical block size
138 */
139#define LBOFFSET(x)	((x) & (PBSIZE - 1))
140#define LBNUMBER(x)	((x) >> L2PBSIZE)
141#define	LBLK2PBLK(sb,b)	((b) << (sb->s_blocksize_bits - L2PBSIZE))
142#define	PBLK2LBLK(sb,b)	((b) >> (sb->s_blocksize_bits - L2PBSIZE))
143/* size in byte -> last page number */
144#define	SIZE2PN(size)	( ((s64)((size) - 1)) >> (L2PSIZE) )
145/* size in byte -> last file system block number */
146#define	SIZE2BN(size, l2bsize) ( ((s64)((size) - 1)) >> (l2bsize) )
147
148/*
149 * fixed physical block address (physical block size = 512 byte)
150 *
151 * NOTE: since we can't guarantee a physical block size of 512 bytes the use of
152 *	 these macros should be removed and the byte offset macros used instead.
153 */
154#define SUPER1_B	64	/* primary superblock */
155#define	AIMAP_B		(SUPER1_B + 8)	/* 1st extent of aggregate inode map */
156#define	AITBL_B		(AIMAP_B + 16)	/*
157					 * 1st extent of aggregate inode table
158					 */
159#define	SUPER2_B	(AITBL_B + 32)	/* 2ndary superblock pbn */
160#define	BMAP_B		(SUPER2_B + 8)	/* block allocation map */
161
162/*
163 * SIZE_OF_SUPER defines the total amount of space reserved on disk for the
164 * superblock.  This is not the same as the superblock structure, since all of
165 * this space is not currently being used.
166 */
167#define SIZE_OF_SUPER	PSIZE
168
169/*
170 * SIZE_OF_AG_TABLE defines the amount of space reserved to hold the AG table
171 */
172#define SIZE_OF_AG_TABLE	PSIZE
173
174/*
175 * SIZE_OF_MAP_PAGE defines the amount of disk space reserved for each page of
176 * the inode allocation map (to hold iag)
177 */
178#define SIZE_OF_MAP_PAGE	PSIZE
179
180/*
181 * fixed byte offset address
182 */
183#define SUPER1_OFF	0x8000	/* primary superblock */
184#define AIMAP_OFF	(SUPER1_OFF + SIZE_OF_SUPER)
185					/*
186					 * Control page of aggregate inode map
187					 * followed by 1st extent of map
188					 */
189#define AITBL_OFF	(AIMAP_OFF + (SIZE_OF_MAP_PAGE << 1))
190					/*
191					 * 1st extent of aggregate inode table
192					 */
193#define SUPER2_OFF	(AITBL_OFF + INODE_EXTENT_SIZE)
194					/*
195					 * secondary superblock
196					 */
197#define BMAP_OFF	(SUPER2_OFF + SIZE_OF_SUPER)
198					/*
199					 * block allocation map
200					 */
201
202/*
203 * The following macro is used to indicate the number of reserved disk blocks at
204 * the front of an aggregate, in terms of physical blocks.  This value is
205 * currently defined to be 32K.  This turns out to be the same as the primary
206 * superblock's address, since it directly follows the reserved blocks.
207 */
208#define AGGR_RSVD_BLOCKS	SUPER1_B
209
210/*
211 * The following macro is used to indicate the number of reserved bytes at the
212 * front of an aggregate.  This value is currently defined to be 32K.  This
213 * turns out to be the same as the primary superblock's byte offset, since it
214 * directly follows the reserved blocks.
215 */
216#define AGGR_RSVD_BYTES	SUPER1_OFF
217
218/*
219 * The following macro defines the byte offset for the first inode extent in
220 * the aggregate inode table.  This allows us to find the self inode to find the
221 * rest of the table.  Currently this value is 44K.
222 */
223#define AGGR_INODE_TABLE_START	AITBL_OFF
224
225/*
226 *	fixed reserved inode number
227 */
228/* aggregate inode */
229#define AGGR_RESERVED_I	0	/* aggregate inode (reserved) */
230#define	AGGREGATE_I	1	/* aggregate inode map inode */
231#define	BMAP_I		2	/* aggregate block allocation map inode */
232#define	LOG_I		3	/* aggregate inline log inode */
233#define BADBLOCK_I	4	/* aggregate bad block inode */
234#define	FILESYSTEM_I	16	/* 1st/only fileset inode in ait:
235				 * fileset inode map inode
236				 */
237
238/* per fileset inode */
239#define FILESET_RSVD_I	0	/* fileset inode (reserved) */
240#define FILESET_EXT_I	1	/* fileset inode extension */
241#define	ROOT_I		2	/* fileset root inode */
242#define ACL_I		3	/* fileset ACL inode */
243
244#define FILESET_OBJECT_I 4	/* the first fileset inode available for a file
245				 * or directory or link...
246				 */
247#define FIRST_FILESET_INO 16	/* the first aggregate inode which describes
248				 * an inode.  (To fsck this is also the first
249				 * inode in part 2 of the agg inode table.)
250				 */
251
252/*
253 *	directory configuration
254 */
255#define JFS_NAME_MAX	255
256#define JFS_PATH_MAX	BPSIZE
257
258
259/*
260 *	file system state (superblock state)
261 */
262#define FM_CLEAN 0x00000000	/* file system is unmounted and clean */
263#define FM_MOUNT 0x00000001	/* file system is mounted cleanly */
264#define FM_DIRTY 0x00000002	/* file system was not unmounted and clean
265				 * when mounted or
266				 * commit failure occurred while being mounted:
267				 * fsck() must be run to repair
268				 */
269#define	FM_LOGREDO 0x00000004	/* log based recovery (logredo()) failed:
270				 * fsck() must be run to repair
271				 */
272#define	FM_EXTENDFS 0x00000008	/* file system extendfs() in progress */
273#define	FM_STATE_MAX 0x0000000f	/* max value of s_state */
274
275#endif				/* _H_JFS_FILSYS */
v6.13.7
  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3 *   Copyright (C) International Business Machines Corp., 2000-2003
  4 */
  5#ifndef _H_JFS_FILSYS
  6#define _H_JFS_FILSYS
  7
  8/*
  9 *	jfs_filsys.h
 10 *
 11 * file system (implementation-dependent) constants
 12 *
 13 * refer to <limits.h> for system wide implementation-dependent constants
 14 */
 15
 16/*
 17 *	 file system option (superblock flag)
 18 */
 19
 20/* directory option */
 21#define JFS_UNICODE	0x00000001	/* unicode name */
 22
 23/* mount time flags for error handling */
 24#define JFS_ERR_REMOUNT_RO 0x00000002	/* remount read-only */
 25#define JFS_ERR_CONTINUE   0x00000004	/* continue */
 26#define JFS_ERR_PANIC      0x00000008	/* panic */
 27#define JFS_ERR_MASK	   (JFS_ERR_REMOUNT_RO|JFS_ERR_CONTINUE|JFS_ERR_PANIC)
 28
 29/* Quota support */
 30#define	JFS_USRQUOTA	0x00000010
 31#define	JFS_GRPQUOTA	0x00000020
 32
 33/* mount time flag to disable journaling to disk */
 34#define JFS_NOINTEGRITY 0x00000040
 35
 36/* mount time flag to enable TRIM to ssd disks */
 37#define JFS_DISCARD     0x00000080
 38
 39/* commit option */
 40#define	JFS_COMMIT	0x00000f00	/* commit option mask */
 41#define	JFS_GROUPCOMMIT	0x00000100	/* group (of 1) commit */
 42#define	JFS_LAZYCOMMIT	0x00000200	/* lazy commit */
 43#define	JFS_TMPFS	0x00000400	/* temporary file system -
 44					 * do not log/commit:
 45					 * Never implemented
 46					 */
 47
 48/* log logical volume option */
 49#define	JFS_INLINELOG	0x00000800	/* inline log within file system */
 50#define JFS_INLINEMOVE	0x00001000	/* inline log being moved */
 51
 52/* Secondary aggregate inode table */
 53#define JFS_BAD_SAIT	0x00010000	/* current secondary ait is bad */
 54
 55/* sparse regular file support */
 56#define JFS_SPARSE	0x00020000	/* sparse regular file */
 57
 58/* DASD Limits		F226941 */
 59#define JFS_DASD_ENABLED 0x00040000	/* DASD limits enabled */
 60#define	JFS_DASD_PRIME	0x00080000	/* Prime DASD usage on boot */
 61
 62/* big endian flag */
 63#define	JFS_SWAP_BYTES	0x00100000	/* running on big endian computer */
 64
 65/* Directory index */
 66#define JFS_DIR_INDEX	0x00200000	/* Persistent index for */
 67
 68/* platform options */
 69#define JFS_LINUX	0x10000000	/* Linux support */
 70#define JFS_DFS		0x20000000	/* DCE DFS LFS support */
 71/*	Never implemented */
 72
 73#define JFS_OS2		0x40000000	/* OS/2 support */
 74/*	case-insensitive name/directory support */
 75
 76#define JFS_AIX		0x80000000	/* AIX support */
 77
 78/*
 79 *	buffer cache configuration
 80 */
 81/* page size */
 82#ifdef PSIZE
 83#undef PSIZE
 84#endif
 85#define	PSIZE		4096	/* page size (in byte) */
 86#define	L2PSIZE		12	/* log2(PSIZE) */
 87#define	POFFSET		4095	/* offset within page */
 88
 89/* buffer page size */
 90#define BPSIZE	PSIZE
 91
 92/*
 93 *	fs fundamental size
 94 *
 95 * PSIZE >= file system block size >= PBSIZE >= DISIZE
 96 */
 97#define	PBSIZE		512	/* physical block size (in byte) */
 98#define	L2PBSIZE	9	/* log2(PBSIZE) */
 99
100#define DISIZE		512	/* on-disk inode size (in byte) */
101#define L2DISIZE	9	/* log2(DISIZE) */
102
103#define IDATASIZE	256	/* inode inline data size */
104#define	IXATTRSIZE	128	/* inode inline extended attribute size */
105
106#define XTPAGE_SIZE	4096
107#define log2_PAGESIZE	12
108
109#define IAG_SIZE	4096
110#define IAG_EXTENT_SIZE 4096
111#define	INOSPERIAG	4096	/* number of disk inodes per iag */
112#define	L2INOSPERIAG	12	/* l2 number of disk inodes per iag */
113#define INOSPEREXT	32	/* number of disk inode per extent */
114#define L2INOSPEREXT	5	/* l2 number of disk inode per extent */
115#define	IXSIZE		(DISIZE * INOSPEREXT)	/* inode extent size */
116#define	INOSPERPAGE	8	/* number of disk inodes per 4K page */
117#define	L2INOSPERPAGE	3	/* log2(INOSPERPAGE) */
118
119#define	IAGFREELIST_LWM	64
120
121#define INODE_EXTENT_SIZE	IXSIZE	/* inode extent size */
122#define NUM_INODE_PER_EXTENT	INOSPEREXT
123#define NUM_INODE_PER_IAG	INOSPERIAG
124
125#define MINBLOCKSIZE		512
126#define L2MINBLOCKSIZE		9
127#define MAXBLOCKSIZE		4096
128#define L2MAXBLOCKSIZE		12
129#define	MAXFILESIZE		((s64)1 << 52)
130
131#define JFS_LINK_MAX		0xffffffff
132
133/* Minimum number of bytes supported for a JFS partition */
134#define MINJFS			(0x1000000)
135#define MINJFSTEXT		"16"
136
137/*
138 * file system block size -> physical block size
139 */
140#define LBOFFSET(x)	((x) & (PBSIZE - 1))
141#define LBNUMBER(x)	((x) >> L2PBSIZE)
142#define	LBLK2PBLK(sb,b)	((b) << (sb->s_blocksize_bits - L2PBSIZE))
143#define	PBLK2LBLK(sb,b)	((b) >> (sb->s_blocksize_bits - L2PBSIZE))
144/* size in byte -> last page number */
145#define	SIZE2PN(size)	( ((s64)((size) - 1)) >> (L2PSIZE) )
146/* size in byte -> last file system block number */
147#define	SIZE2BN(size, l2bsize) ( ((s64)((size) - 1)) >> (l2bsize) )
148
149/*
150 * fixed physical block address (physical block size = 512 byte)
151 *
152 * NOTE: since we can't guarantee a physical block size of 512 bytes the use of
153 *	 these macros should be removed and the byte offset macros used instead.
154 */
155#define SUPER1_B	64	/* primary superblock */
156#define	AIMAP_B		(SUPER1_B + 8)	/* 1st extent of aggregate inode map */
157#define	AITBL_B		(AIMAP_B + 16)	/*
158					 * 1st extent of aggregate inode table
159					 */
160#define	SUPER2_B	(AITBL_B + 32)	/* 2ndary superblock pbn */
161#define	BMAP_B		(SUPER2_B + 8)	/* block allocation map */
162
163/*
164 * SIZE_OF_SUPER defines the total amount of space reserved on disk for the
165 * superblock.  This is not the same as the superblock structure, since all of
166 * this space is not currently being used.
167 */
168#define SIZE_OF_SUPER	PSIZE
169
170/*
171 * SIZE_OF_AG_TABLE defines the amount of space reserved to hold the AG table
172 */
173#define SIZE_OF_AG_TABLE	PSIZE
174
175/*
176 * SIZE_OF_MAP_PAGE defines the amount of disk space reserved for each page of
177 * the inode allocation map (to hold iag)
178 */
179#define SIZE_OF_MAP_PAGE	PSIZE
180
181/*
182 * fixed byte offset address
183 */
184#define SUPER1_OFF	0x8000	/* primary superblock */
185#define AIMAP_OFF	(SUPER1_OFF + SIZE_OF_SUPER)
186					/*
187					 * Control page of aggregate inode map
188					 * followed by 1st extent of map
189					 */
190#define AITBL_OFF	(AIMAP_OFF + (SIZE_OF_MAP_PAGE << 1))
191					/*
192					 * 1st extent of aggregate inode table
193					 */
194#define SUPER2_OFF	(AITBL_OFF + INODE_EXTENT_SIZE)
195					/*
196					 * secondary superblock
197					 */
198#define BMAP_OFF	(SUPER2_OFF + SIZE_OF_SUPER)
199					/*
200					 * block allocation map
201					 */
202
203/*
204 * The following macro is used to indicate the number of reserved disk blocks at
205 * the front of an aggregate, in terms of physical blocks.  This value is
206 * currently defined to be 32K.  This turns out to be the same as the primary
207 * superblock's address, since it directly follows the reserved blocks.
208 */
209#define AGGR_RSVD_BLOCKS	SUPER1_B
210
211/*
212 * The following macro is used to indicate the number of reserved bytes at the
213 * front of an aggregate.  This value is currently defined to be 32K.  This
214 * turns out to be the same as the primary superblock's byte offset, since it
215 * directly follows the reserved blocks.
216 */
217#define AGGR_RSVD_BYTES	SUPER1_OFF
218
219/*
220 * The following macro defines the byte offset for the first inode extent in
221 * the aggregate inode table.  This allows us to find the self inode to find the
222 * rest of the table.  Currently this value is 44K.
223 */
224#define AGGR_INODE_TABLE_START	AITBL_OFF
225
226/*
227 *	fixed reserved inode number
228 */
229/* aggregate inode */
230#define AGGR_RESERVED_I	0	/* aggregate inode (reserved) */
231#define	AGGREGATE_I	1	/* aggregate inode map inode */
232#define	BMAP_I		2	/* aggregate block allocation map inode */
233#define	LOG_I		3	/* aggregate inline log inode */
234#define BADBLOCK_I	4	/* aggregate bad block inode */
235#define	FILESYSTEM_I	16	/* 1st/only fileset inode in ait:
236				 * fileset inode map inode
237				 */
238
239/* per fileset inode */
240#define FILESET_RSVD_I	0	/* fileset inode (reserved) */
241#define FILESET_EXT_I	1	/* fileset inode extension */
242#define	ROOT_I		2	/* fileset root inode */
243#define ACL_I		3	/* fileset ACL inode */
244
245#define FILESET_OBJECT_I 4	/* the first fileset inode available for a file
246				 * or directory or link...
247				 */
248#define FIRST_FILESET_INO 16	/* the first aggregate inode which describes
249				 * an inode.  (To fsck this is also the first
250				 * inode in part 2 of the agg inode table.)
251				 */
252
253/*
254 *	directory configuration
255 */
256#define JFS_NAME_MAX	255
257#define JFS_PATH_MAX	BPSIZE
258
259
260/*
261 *	file system state (superblock state)
262 */
263#define FM_CLEAN 0x00000000	/* file system is unmounted and clean */
264#define FM_MOUNT 0x00000001	/* file system is mounted cleanly */
265#define FM_DIRTY 0x00000002	/* file system was not unmounted and clean
266				 * when mounted or
267				 * commit failure occurred while being mounted:
268				 * fsck() must be run to repair
269				 */
270#define	FM_LOGREDO 0x00000004	/* log based recovery (logredo()) failed:
271				 * fsck() must be run to repair
272				 */
273#define	FM_EXTENDFS 0x00000008	/* file system extendfs() in progress */
274#define	FM_STATE_MAX 0x0000000f	/* max value of s_state */
275
276#endif				/* _H_JFS_FILSYS */