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 struct super_block *sb;
24 int work_queued; /* non-zero if the delayed work is queued */
25 struct delayed_work sync_work; /* FS sync delayed work */
26 spinlock_t work_lock; /* protects sync_work and work_queued */
27 struct mutex s_lock;
28};
29
30struct ufs_inode_info {
31 union {
32 __fs32 i_data[15];
33 __u8 i_symlink[2 * 4 * 15];
34 __fs64 u2_i_data[15];
35 } i_u1;
36 __u32 i_flags;
37 __u32 i_shadow;
38 __u32 i_unused1;
39 __u32 i_unused2;
40 __u32 i_oeftflag;
41 __u16 i_osync;
42 __u64 i_lastfrag;
43 __u32 i_dir_start_lookup;
44 struct inode vfs_inode;
45};
46
47/* mount options */
48#define UFS_MOUNT_ONERROR 0x0000000F
49#define UFS_MOUNT_ONERROR_PANIC 0x00000001
50#define UFS_MOUNT_ONERROR_LOCK 0x00000002
51#define UFS_MOUNT_ONERROR_UMOUNT 0x00000004
52#define UFS_MOUNT_ONERROR_REPAIR 0x00000008
53
54#define UFS_MOUNT_UFSTYPE 0x0000FFF0
55#define UFS_MOUNT_UFSTYPE_OLD 0x00000010
56#define UFS_MOUNT_UFSTYPE_44BSD 0x00000020
57#define UFS_MOUNT_UFSTYPE_SUN 0x00000040
58#define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x00000080
59#define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x00000100
60#define UFS_MOUNT_UFSTYPE_OPENSTEP 0x00000200
61#define UFS_MOUNT_UFSTYPE_SUNx86 0x00000400
62#define UFS_MOUNT_UFSTYPE_HP 0x00000800
63#define UFS_MOUNT_UFSTYPE_UFS2 0x00001000
64#define UFS_MOUNT_UFSTYPE_SUNOS 0x00002000
65
66#define ufs_clear_opt(o,opt) o &= ~UFS_MOUNT_##opt
67#define ufs_set_opt(o,opt) o |= UFS_MOUNT_##opt
68#define ufs_test_opt(o,opt) ((o) & UFS_MOUNT_##opt)
69
70/*
71 * Debug code
72 */
73#ifdef CONFIG_UFS_DEBUG
74# define UFSD(f, a...) { \
75 printk ("UFSD (%s, %d): %s:", \
76 __FILE__, __LINE__, __func__); \
77 printk (f, ## a); \
78 }
79#else
80# define UFSD(f, a...) /**/
81#endif
82
83/* balloc.c */
84extern void ufs_free_fragments (struct inode *, u64, unsigned);
85extern void ufs_free_blocks (struct inode *, u64, unsigned);
86extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
87 unsigned, int *, struct page *);
88
89/* cylinder.c */
90extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
91extern void ufs_put_cylinder (struct super_block *, unsigned);
92
93/* dir.c */
94extern const struct inode_operations ufs_dir_inode_operations;
95extern int ufs_add_link (struct dentry *, struct inode *);
96extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
97extern int ufs_make_empty(struct inode *, struct inode *);
98extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
99extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
100extern int ufs_empty_dir (struct inode *);
101extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
102extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
103 struct page *page, struct inode *inode);
104
105/* file.c */
106extern const struct inode_operations ufs_file_inode_operations;
107extern const struct file_operations ufs_file_operations;
108extern const struct address_space_operations ufs_aops;
109
110/* ialloc.c */
111extern void ufs_free_inode (struct inode *inode);
112extern struct inode * ufs_new_inode (struct inode *, umode_t);
113
114/* inode.c */
115extern struct inode *ufs_iget(struct super_block *, unsigned long);
116extern int ufs_write_inode (struct inode *, struct writeback_control *);
117extern int ufs_sync_inode (struct inode *);
118extern void ufs_evict_inode (struct inode *);
119extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create);
120
121/* namei.c */
122extern const struct file_operations ufs_dir_operations;
123
124/* super.c */
125extern __printf(3, 4)
126void ufs_warning(struct super_block *, const char *, const char *, ...);
127extern __printf(3, 4)
128void ufs_error(struct super_block *, const char *, const char *, ...);
129extern __printf(3, 4)
130void ufs_panic(struct super_block *, const char *, const char *, ...);
131void ufs_mark_sb_dirty(struct super_block *sb);
132
133/* symlink.c */
134extern const struct inode_operations ufs_fast_symlink_inode_operations;
135extern const struct inode_operations ufs_symlink_inode_operations;
136
137/* truncate.c */
138extern int ufs_truncate (struct inode *, loff_t);
139extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
140
141static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
142{
143 return sb->s_fs_info;
144}
145
146static inline struct ufs_inode_info *UFS_I(struct inode *inode)
147{
148 return container_of(inode, struct ufs_inode_info, vfs_inode);
149}
150
151/*
152 * Give cylinder group number for a file system block.
153 * Give cylinder group block number for a file system block.
154 */
155/* #define ufs_dtog(d) ((d) / uspi->s_fpg) */
156static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
157{
158 do_div(b, uspi->s_fpg);
159 return b;
160}
161/* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */
162static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
163{
164 return do_div(b, uspi->s_fpg);
165}
166
167extern void lock_ufs(struct super_block *sb);
168extern void unlock_ufs(struct super_block *sb);
169
170#endif /* _UFS_UFS_H */