1#include <linux/fs.h>
2#include <linux/ext2_fs.h>
3
4
5
6
7struct ext2_mount_options {
8 unsigned long s_mount_opt;
9 uid_t s_resuid;
10 gid_t s_resgid;
11};
12
13
14
15
16struct ext2_inode_info {
17 __le32 i_data[15];
18 __u32 i_flags;
19 __u32 i_faddr;
20 __u8 i_frag_no;
21 __u8 i_frag_size;
22 __u16 i_state;
23 __u32 i_file_acl;
24 __u32 i_dir_acl;
25 __u32 i_dtime;
26
27
28
29
30
31
32
33
34 __u32 i_block_group;
35
36
37 struct ext2_block_alloc_info *i_block_alloc_info;
38
39 __u32 i_dir_start_lookup;
40#ifdef CONFIG_EXT2_FS_XATTR
41
42
43
44
45
46
47
48 struct rw_semaphore xattr_sem;
49#endif
50#ifdef CONFIG_EXT2_FS_POSIX_ACL
51 struct posix_acl *i_acl;
52 struct posix_acl *i_default_acl;
53#endif
54 rwlock_t i_meta_lock;
55
56
57
58
59
60
61
62 struct mutex truncate_mutex;
63 struct inode vfs_inode;
64 struct list_head i_orphan;
65};
66
67
68
69
70#define EXT2_STATE_NEW 0x00000001
71
72
73
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79
80
81
82static inline struct ext2_inode_info *EXT2_I(struct inode *inode)
83{
84 return container_of(inode, struct ext2_inode_info, vfs_inode);
85}
86
87
88extern int ext2_bg_has_super(struct super_block *sb, int group);
89extern unsigned long ext2_bg_num_gdb(struct super_block *sb, int group);
90extern ext2_fsblk_t ext2_new_block(struct inode *, unsigned long, int *);
91extern ext2_fsblk_t ext2_new_blocks(struct inode *, unsigned long,
92 unsigned long *, int *);
93extern void ext2_free_blocks (struct inode *, unsigned long,
94 unsigned long);
95extern unsigned long ext2_count_free_blocks (struct super_block *);
96extern unsigned long ext2_count_dirs (struct super_block *);
97extern void ext2_check_blocks_bitmap (struct super_block *);
98extern struct ext2_group_desc * ext2_get_group_desc(struct super_block * sb,
99 unsigned int block_group,
100 struct buffer_head ** bh);
101extern void ext2_discard_reservation (struct inode *);
102extern int ext2_should_retry_alloc(struct super_block *sb, int *retries);
103extern void ext2_init_block_alloc_info(struct inode *);
104extern void ext2_rsv_window_add(struct super_block *sb, struct ext2_reserve_window_node *rsv);
105
106
107extern int ext2_add_link (struct dentry *, struct inode *);
108extern ino_t ext2_inode_by_name(struct inode *, struct dentry *);
109extern int ext2_make_empty(struct inode *, struct inode *);
110extern struct ext2_dir_entry_2 * ext2_find_entry (struct inode *,struct dentry *, struct page **);
111extern int ext2_delete_entry (struct ext2_dir_entry_2 *, struct page *);
112extern int ext2_empty_dir (struct inode *);
113extern struct ext2_dir_entry_2 * ext2_dotdot (struct inode *, struct page **);
114extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, struct inode *);
115
116
117extern int ext2_sync_file (struct file *, struct dentry *, int);
118
119
120extern struct inode * ext2_new_inode (struct inode *, int);
121extern void ext2_free_inode (struct inode *);
122extern unsigned long ext2_count_free_inodes (struct super_block *);
123extern void ext2_check_inodes_bitmap (struct super_block *);
124extern unsigned long ext2_count_free (struct buffer_head *, unsigned);
125
126
127extern void ext2_read_inode (struct inode *);
128extern int ext2_write_inode (struct inode *, int);
129extern void ext2_put_inode (struct inode *);
130extern void ext2_delete_inode (struct inode *);
131extern int ext2_sync_inode (struct inode *);
132extern int ext2_get_block(struct inode *, sector_t, struct buffer_head *, int);
133extern void ext2_truncate (struct inode *);
134extern int ext2_setattr (struct dentry *, struct iattr *);
135extern void ext2_set_inode_flags(struct inode *inode);
136extern void ext2_get_inode_flags(struct ext2_inode_info *);
137int __ext2_write_begin(struct file *file, struct address_space *mapping,
138 loff_t pos, unsigned len, unsigned flags,
139 struct page **pagep, void **fsdata);
140
141
142extern int ext2_ioctl (struct inode *, struct file *, unsigned int,
143 unsigned long);
144extern long ext2_compat_ioctl(struct file *, unsigned int, unsigned long);
145
146
147struct dentry *ext2_get_parent(struct dentry *child);
148
149
150extern void ext2_error (struct super_block *, const char *, const char *, ...)
151 __attribute__ ((format (printf, 3, 4)));
152extern void ext2_warning (struct super_block *, const char *, const char *, ...)
153 __attribute__ ((format (printf, 3, 4)));
154extern void ext2_update_dynamic_rev (struct super_block *sb);
155extern void ext2_write_super (struct super_block *);
156
157
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159
160
161
162extern const struct file_operations ext2_dir_operations;
163
164
165extern const struct inode_operations ext2_file_inode_operations;
166extern const struct file_operations ext2_file_operations;
167extern const struct file_operations ext2_xip_file_operations;
168
169
170extern const struct address_space_operations ext2_aops;
171extern const struct address_space_operations ext2_aops_xip;
172extern const struct address_space_operations ext2_nobh_aops;
173
174
175extern const struct inode_operations ext2_dir_inode_operations;
176extern const struct inode_operations ext2_special_inode_operations;
177
178
179extern const struct inode_operations ext2_fast_symlink_inode_operations;
180extern const struct inode_operations ext2_symlink_inode_operations;
181
182static inline ext2_fsblk_t
183ext2_group_first_block_no(struct super_block *sb, unsigned long group_no)
184{
185 return group_no * (ext2_fsblk_t)EXT2_BLOCKS_PER_GROUP(sb) +
186 le32_to_cpu(EXT2_SB(sb)->s_es->s_first_data_block);
187}
188