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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* -*- mode: c; c-basic-offset: 8; -*-
3 * vim: noexpandtab sw=8 ts=8 sts=0:
4 *
5 * inode.h
6 *
7 * Function prototypes
8 *
9 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
10 */
11
12#ifndef OCFS2_INODE_H
13#define OCFS2_INODE_H
14
15#include "extent_map.h"
16
17/* OCFS2 Inode Private Data */
18struct ocfs2_inode_info
19{
20 u64 ip_blkno;
21
22 struct ocfs2_lock_res ip_rw_lockres;
23 struct ocfs2_lock_res ip_inode_lockres;
24 struct ocfs2_lock_res ip_open_lockres;
25
26 /* protects allocation changes on this inode. */
27 struct rw_semaphore ip_alloc_sem;
28
29 /* protects extended attribute changes on this inode */
30 struct rw_semaphore ip_xattr_sem;
31
32 /* These fields are protected by ip_lock */
33 spinlock_t ip_lock;
34 u32 ip_open_count;
35 struct list_head ip_io_markers;
36 u32 ip_clusters;
37
38 u16 ip_dyn_features;
39 struct mutex ip_io_mutex;
40 u32 ip_flags; /* see below */
41 u32 ip_attr; /* inode attributes */
42
43 /* Record unwritten extents during direct io. */
44 struct list_head ip_unwritten_list;
45
46 /* protected by recovery_lock. */
47 struct inode *ip_next_orphan;
48
49 struct ocfs2_caching_info ip_metadata_cache;
50 struct ocfs2_extent_map ip_extent_map;
51 struct inode vfs_inode;
52 struct jbd2_inode ip_jinode;
53
54 u32 ip_dir_start_lookup;
55
56 /* Only valid if the inode is the dir. */
57 u32 ip_last_used_slot;
58 u64 ip_last_used_group;
59 u32 ip_dir_lock_gen;
60
61 struct ocfs2_alloc_reservation ip_la_data_resv;
62
63 /*
64 * Transactions that contain inode's metadata needed to complete
65 * fsync and fdatasync, respectively.
66 */
67 tid_t i_sync_tid;
68 tid_t i_datasync_tid;
69
70 struct dquot *i_dquot[MAXQUOTAS];
71};
72
73/*
74 * Flags for the ip_flags field
75 */
76/* System file inodes */
77#define OCFS2_INODE_SYSTEM_FILE 0x00000001
78#define OCFS2_INODE_JOURNAL 0x00000002
79#define OCFS2_INODE_BITMAP 0x00000004
80/* This inode has been wiped from disk */
81#define OCFS2_INODE_DELETED 0x00000008
82/* Has the inode been orphaned on another node?
83 *
84 * This hints to ocfs2_drop_inode that it should clear i_nlink before
85 * continuing.
86 *
87 * We *only* set this on unlink vote from another node. If the inode
88 * was locally orphaned, then we're sure of the state and don't need
89 * to twiddle i_nlink later - it's either zero or not depending on
90 * whether our unlink succeeded. Otherwise we got this from a node
91 * whose intention was to orphan the inode, however he may have
92 * crashed, failed etc, so we let ocfs2_drop_inode zero the value and
93 * rely on ocfs2_delete_inode to sort things out under the proper
94 * cluster locks.
95 */
96#define OCFS2_INODE_MAYBE_ORPHANED 0x00000010
97/* Does someone have the file open O_DIRECT */
98#define OCFS2_INODE_OPEN_DIRECT 0x00000020
99/* Tell the inode wipe code it's not in orphan dir */
100#define OCFS2_INODE_SKIP_ORPHAN_DIR 0x00000040
101/* Entry in orphan dir with 'dio-' prefix */
102#define OCFS2_INODE_DIO_ORPHAN_ENTRY 0x00000080
103
104static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode)
105{
106 return container_of(inode, struct ocfs2_inode_info, vfs_inode);
107}
108
109#define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL)
110#define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL)
111
112extern const struct address_space_operations ocfs2_aops;
113extern const struct ocfs2_caching_operations ocfs2_inode_caching_ops;
114
115static inline struct ocfs2_caching_info *INODE_CACHE(struct inode *inode)
116{
117 return &OCFS2_I(inode)->ip_metadata_cache;
118}
119
120void ocfs2_evict_inode(struct inode *inode);
121int ocfs2_drop_inode(struct inode *inode);
122
123/* Flags for ocfs2_iget() */
124#define OCFS2_FI_FLAG_SYSFILE 0x1
125#define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2
126#define OCFS2_FI_FLAG_FILECHECK_CHK 0x4
127#define OCFS2_FI_FLAG_FILECHECK_FIX 0x8
128
129struct inode *ocfs2_ilookup(struct super_block *sb, u64 feoff);
130struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags,
131 int sysfile_type);
132int ocfs2_inode_revalidate(struct dentry *dentry);
133void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
134 int create_ino);
135void ocfs2_sync_blockdev(struct super_block *sb);
136void ocfs2_refresh_inode(struct inode *inode,
137 struct ocfs2_dinode *fe);
138int ocfs2_mark_inode_dirty(handle_t *handle,
139 struct inode *inode,
140 struct buffer_head *bh);
141
142void ocfs2_set_inode_flags(struct inode *inode);
143void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi);
144
145static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode)
146{
147 int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9;
148
149 return (blkcnt_t)OCFS2_I(inode)->ip_clusters << c_to_s_bits;
150}
151
152/* Validate that a bh contains a valid inode */
153int ocfs2_validate_inode_block(struct super_block *sb,
154 struct buffer_head *bh);
155/*
156 * Read an inode block into *bh. If *bh is NULL, a bh will be allocated.
157 * This is a cached read. The inode will be validated with
158 * ocfs2_validate_inode_block().
159 */
160int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh);
161/* The same, but can be passed OCFS2_BH_* flags */
162int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh,
163 int flags);
164
165static inline struct ocfs2_inode_info *cache_info_to_inode(struct ocfs2_caching_info *ci)
166{
167 return container_of(ci, struct ocfs2_inode_info, ip_metadata_cache);
168}
169
170/* Does this inode have the reflink flag set? */
171static inline bool ocfs2_is_refcount_inode(struct inode *inode)
172{
173 return (OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL);
174}
175
176#endif /* OCFS2_INODE_H */
1/* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * inode.h
5 *
6 * Function prototypes
7 *
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
24 */
25
26#ifndef OCFS2_INODE_H
27#define OCFS2_INODE_H
28
29#include "extent_map.h"
30
31/* OCFS2 Inode Private Data */
32struct ocfs2_inode_info
33{
34 u64 ip_blkno;
35
36 struct ocfs2_lock_res ip_rw_lockres;
37 struct ocfs2_lock_res ip_inode_lockres;
38 struct ocfs2_lock_res ip_open_lockres;
39
40 /* protects allocation changes on this inode. */
41 struct rw_semaphore ip_alloc_sem;
42
43 /* protects extended attribute changes on this inode */
44 struct rw_semaphore ip_xattr_sem;
45
46 /* These fields are protected by ip_lock */
47 spinlock_t ip_lock;
48 u32 ip_open_count;
49 struct list_head ip_io_markers;
50 u32 ip_clusters;
51
52 u16 ip_dyn_features;
53 struct mutex ip_io_mutex;
54 u32 ip_flags; /* see below */
55 u32 ip_attr; /* inode attributes */
56
57 /* Record unwritten extents during direct io. */
58 struct list_head ip_unwritten_list;
59
60 /* protected by recovery_lock. */
61 struct inode *ip_next_orphan;
62
63 struct ocfs2_caching_info ip_metadata_cache;
64 struct ocfs2_extent_map ip_extent_map;
65 struct inode vfs_inode;
66 struct jbd2_inode ip_jinode;
67
68 u32 ip_dir_start_lookup;
69
70 /* Only valid if the inode is the dir. */
71 u32 ip_last_used_slot;
72 u64 ip_last_used_group;
73 u32 ip_dir_lock_gen;
74
75 struct ocfs2_alloc_reservation ip_la_data_resv;
76
77 /*
78 * Transactions that contain inode's metadata needed to complete
79 * fsync and fdatasync, respectively.
80 */
81 tid_t i_sync_tid;
82 tid_t i_datasync_tid;
83
84 struct dquot *i_dquot[MAXQUOTAS];
85};
86
87/*
88 * Flags for the ip_flags field
89 */
90/* System file inodes */
91#define OCFS2_INODE_SYSTEM_FILE 0x00000001
92#define OCFS2_INODE_JOURNAL 0x00000002
93#define OCFS2_INODE_BITMAP 0x00000004
94/* This inode has been wiped from disk */
95#define OCFS2_INODE_DELETED 0x00000008
96/* Has the inode been orphaned on another node?
97 *
98 * This hints to ocfs2_drop_inode that it should clear i_nlink before
99 * continuing.
100 *
101 * We *only* set this on unlink vote from another node. If the inode
102 * was locally orphaned, then we're sure of the state and don't need
103 * to twiddle i_nlink later - it's either zero or not depending on
104 * whether our unlink succeeded. Otherwise we got this from a node
105 * whose intention was to orphan the inode, however he may have
106 * crashed, failed etc, so we let ocfs2_drop_inode zero the value and
107 * rely on ocfs2_delete_inode to sort things out under the proper
108 * cluster locks.
109 */
110#define OCFS2_INODE_MAYBE_ORPHANED 0x00000010
111/* Does someone have the file open O_DIRECT */
112#define OCFS2_INODE_OPEN_DIRECT 0x00000020
113/* Tell the inode wipe code it's not in orphan dir */
114#define OCFS2_INODE_SKIP_ORPHAN_DIR 0x00000040
115/* Entry in orphan dir with 'dio-' prefix */
116#define OCFS2_INODE_DIO_ORPHAN_ENTRY 0x00000080
117
118static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode)
119{
120 return container_of(inode, struct ocfs2_inode_info, vfs_inode);
121}
122
123#define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL)
124#define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL)
125
126extern struct kmem_cache *ocfs2_inode_cache;
127
128extern const struct address_space_operations ocfs2_aops;
129extern const struct ocfs2_caching_operations ocfs2_inode_caching_ops;
130
131static inline struct ocfs2_caching_info *INODE_CACHE(struct inode *inode)
132{
133 return &OCFS2_I(inode)->ip_metadata_cache;
134}
135
136void ocfs2_evict_inode(struct inode *inode);
137int ocfs2_drop_inode(struct inode *inode);
138
139/* Flags for ocfs2_iget() */
140#define OCFS2_FI_FLAG_SYSFILE 0x1
141#define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2
142#define OCFS2_FI_FLAG_FILECHECK_CHK 0x4
143#define OCFS2_FI_FLAG_FILECHECK_FIX 0x8
144
145struct inode *ocfs2_ilookup(struct super_block *sb, u64 feoff);
146struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags,
147 int sysfile_type);
148int ocfs2_inode_init_private(struct inode *inode);
149int ocfs2_inode_revalidate(struct dentry *dentry);
150void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
151 int create_ino);
152void ocfs2_read_inode(struct inode *inode);
153void ocfs2_read_inode2(struct inode *inode, void *opaque);
154ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf,
155 size_t size, loff_t *offp);
156void ocfs2_sync_blockdev(struct super_block *sb);
157void ocfs2_refresh_inode(struct inode *inode,
158 struct ocfs2_dinode *fe);
159int ocfs2_mark_inode_dirty(handle_t *handle,
160 struct inode *inode,
161 struct buffer_head *bh);
162struct buffer_head *ocfs2_bread(struct inode *inode,
163 int block, int *err, int reada);
164
165void ocfs2_set_inode_flags(struct inode *inode);
166void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi);
167
168static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode)
169{
170 int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9;
171
172 return (blkcnt_t)OCFS2_I(inode)->ip_clusters << c_to_s_bits;
173}
174
175/* Validate that a bh contains a valid inode */
176int ocfs2_validate_inode_block(struct super_block *sb,
177 struct buffer_head *bh);
178/*
179 * Read an inode block into *bh. If *bh is NULL, a bh will be allocated.
180 * This is a cached read. The inode will be validated with
181 * ocfs2_validate_inode_block().
182 */
183int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh);
184/* The same, but can be passed OCFS2_BH_* flags */
185int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh,
186 int flags);
187
188static inline struct ocfs2_inode_info *cache_info_to_inode(struct ocfs2_caching_info *ci)
189{
190 return container_of(ci, struct ocfs2_inode_info, ip_metadata_cache);
191}
192
193#endif /* OCFS2_INODE_H */