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ufs.h
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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 
9 struct ufs_csum;
10 
11 struct ufs_sb_info {
13  struct ufs_csum * s_csp;
14  unsigned s_bytesex;
15  unsigned s_flags;
16  struct buffer_head ** s_ucg;
19  unsigned short s_cg_loaded;
20  unsigned s_mount_opt;
21  struct mutex mutex;
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 
31  union {
33  __u8 i_symlink[2 * 4 * 15];
35  } i_u1;
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 */
84 extern void ufs_free_fragments (struct inode *, u64, unsigned);
85 extern void ufs_free_blocks (struct inode *, u64, unsigned);
86 extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
87  unsigned, int *, struct page *);
88 
89 /* cylinder.c */
90 extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
91 extern void ufs_put_cylinder (struct super_block *, unsigned);
92 
93 /* dir.c */
94 extern const struct inode_operations ufs_dir_inode_operations;
95 extern int ufs_add_link (struct dentry *, struct inode *);
96 extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
97 extern int ufs_make_empty(struct inode *, struct inode *);
98 extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
99 extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
100 extern int ufs_empty_dir (struct inode *);
101 extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
102 extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
103  struct page *page, struct inode *inode);
104 
105 /* file.c */
106 extern const struct inode_operations ufs_file_inode_operations;
107 extern const struct file_operations ufs_file_operations;
108 extern const struct address_space_operations ufs_aops;
109 
110 /* ialloc.c */
111 extern void ufs_free_inode (struct inode *inode);
112 extern struct inode * ufs_new_inode (struct inode *, umode_t);
113 
114 /* inode.c */
115 extern struct inode *ufs_iget(struct super_block *, unsigned long);
116 extern int ufs_write_inode (struct inode *, struct writeback_control *);
117 extern int ufs_sync_inode (struct inode *);
118 extern void ufs_evict_inode (struct inode *);
119 extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create);
120 
121 /* namei.c */
122 extern const struct file_operations ufs_dir_operations;
123 
124 /* super.c */
125 extern __printf(3, 4)
126 void ufs_warning(struct super_block *, const char *, const char *, ...);
127 extern __printf(3, 4)
128 void ufs_error(struct super_block *, const char *, const char *, ...);
129 extern __printf(3, 4)
130 void ufs_panic(struct super_block *, const char *, const char *, ...);
131 void ufs_mark_sb_dirty(struct super_block *sb);
132 
133 /* symlink.c */
136 
137 /* truncate.c */
138 extern int ufs_truncate (struct inode *, loff_t);
140 
141 static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
142 {
143  return sb->s_fs_info;
144 }
145 
146 static 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) */
156 static 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) */
162 static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
163 {
164  return do_div(b, uspi->s_fpg);
165 }
166 
167 extern void lock_ufs(struct super_block *sb);
168 extern void unlock_ufs(struct super_block *sb);
169 
170 #endif /* _UFS_UFS_H */