tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _UFS_UFS_H
2#define _UFS_UFS_H 1
3
4#define UFS_MAX_GROUP_LOADED 8
5#define UFS_CGNO_EMPTY ((unsigned)-1)
6
7struct ufs_sb_private_info;
8struct ufs_cg_private_info;
9struct ufs_csum;
10
11struct ufs_sb_info {
12 struct ufs_sb_private_info * s_uspi;
13 struct ufs_csum * s_csp;
14 unsigned s_bytesex;
15 unsigned s_flags;
16 struct buffer_head ** s_ucg;
17 struct ufs_cg_private_info * s_ucpi[UFS_MAX_GROUP_LOADED];
18 unsigned s_cgno[UFS_MAX_GROUP_LOADED];
19 unsigned short s_cg_loaded;
20 unsigned s_mount_opt;
21 struct mutex mutex;
22 struct task_struct *mutex_owner;
23};
24
25struct ufs_inode_info {
26 union {
27 __fs32 i_data[15];
28 __u8 i_symlink[2 * 4 * 15];
29 __fs64 u2_i_data[15];
30 } i_u1;
31 __u32 i_flags;
32 __u32 i_shadow;
33 __u32 i_unused1;
34 __u32 i_unused2;
35 __u32 i_oeftflag;
36 __u16 i_osync;
37 __u64 i_lastfrag;
38 __u32 i_dir_start_lookup;
39 struct inode vfs_inode;
40};
41
42/* mount options */
43#define UFS_MOUNT_ONERROR 0x0000000F
44#define UFS_MOUNT_ONERROR_PANIC 0x00000001
45#define UFS_MOUNT_ONERROR_LOCK 0x00000002
46#define UFS_MOUNT_ONERROR_UMOUNT 0x00000004
47#define UFS_MOUNT_ONERROR_REPAIR 0x00000008
48
49#define UFS_MOUNT_UFSTYPE 0x0000FFF0
50#define UFS_MOUNT_UFSTYPE_OLD 0x00000010
51#define UFS_MOUNT_UFSTYPE_44BSD 0x00000020
52#define UFS_MOUNT_UFSTYPE_SUN 0x00000040
53#define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x00000080
54#define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x00000100
55#define UFS_MOUNT_UFSTYPE_OPENSTEP 0x00000200
56#define UFS_MOUNT_UFSTYPE_SUNx86 0x00000400
57#define UFS_MOUNT_UFSTYPE_HP 0x00000800
58#define UFS_MOUNT_UFSTYPE_UFS2 0x00001000
59#define UFS_MOUNT_UFSTYPE_SUNOS 0x00002000
60
61#define ufs_clear_opt(o,opt) o &= ~UFS_MOUNT_##opt
62#define ufs_set_opt(o,opt) o |= UFS_MOUNT_##opt
63#define ufs_test_opt(o,opt) ((o) & UFS_MOUNT_##opt)
64
65/*
66 * Debug code
67 */
68#ifdef CONFIG_UFS_DEBUG
69# define UFSD(f, a...) { \
70 printk ("UFSD (%s, %d): %s:", \
71 __FILE__, __LINE__, __func__); \
72 printk (f, ## a); \
73 }
74#else
75# define UFSD(f, a...) /**/
76#endif
77
78/* balloc.c */
79extern void ufs_free_fragments (struct inode *, u64, unsigned);
80extern void ufs_free_blocks (struct inode *, u64, unsigned);
81extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
82 unsigned, int *, struct page *);
83
84/* cylinder.c */
85extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
86extern void ufs_put_cylinder (struct super_block *, unsigned);
87
88/* dir.c */
89extern const struct inode_operations ufs_dir_inode_operations;
90extern int ufs_add_link (struct dentry *, struct inode *);
91extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
92extern int ufs_make_empty(struct inode *, struct inode *);
93extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
94extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
95extern int ufs_empty_dir (struct inode *);
96extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
97extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
98 struct page *page, struct inode *inode);
99
100/* file.c */
101extern const struct inode_operations ufs_file_inode_operations;
102extern const struct file_operations ufs_file_operations;
103extern const struct address_space_operations ufs_aops;
104
105/* ialloc.c */
106extern void ufs_free_inode (struct inode *inode);
107extern struct inode * ufs_new_inode (struct inode *, int);
108
109/* inode.c */
110extern struct inode *ufs_iget(struct super_block *, unsigned long);
111extern int ufs_write_inode (struct inode *, struct writeback_control *);
112extern int ufs_sync_inode (struct inode *);
113extern void ufs_evict_inode (struct inode *);
114extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create);
115
116/* namei.c */
117extern const struct file_operations ufs_dir_operations;
118
119/* super.c */
120extern void ufs_warning (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
121extern void ufs_error (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
122extern void ufs_panic (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
123
124/* symlink.c */
125extern const struct inode_operations ufs_fast_symlink_inode_operations;
126extern const struct inode_operations ufs_symlink_inode_operations;
127
128/* truncate.c */
129extern int ufs_truncate (struct inode *, loff_t);
130extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
131
132static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
133{
134 return sb->s_fs_info;
135}
136
137static inline struct ufs_inode_info *UFS_I(struct inode *inode)
138{
139 return container_of(inode, struct ufs_inode_info, vfs_inode);
140}
141
142/*
143 * Give cylinder group number for a file system block.
144 * Give cylinder group block number for a file system block.
145 */
146/* #define ufs_dtog(d) ((d) / uspi->s_fpg) */
147static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
148{
149 do_div(b, uspi->s_fpg);
150 return b;
151}
152/* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */
153static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
154{
155 return do_div(b, uspi->s_fpg);
156}
157
158extern void lock_ufs(struct super_block *sb);
159extern void unlock_ufs(struct super_block *sb);
160
161#endif /* _UFS_UFS_H */