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TOMOYO Linux Cross Reference
Linux/fs/ufs/ufs.h

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  1 #ifndef _UFS_UFS_H
  2 #define _UFS_UFS_H 1
  3 
  4 #ifdef pr_fmt
  5 #undef pr_fmt
  6 #endif
  7 
  8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  9 
 10 #define UFS_MAX_GROUP_LOADED 8
 11 #define UFS_CGNO_EMPTY ((unsigned)-1)
 12 
 13 struct ufs_sb_private_info;
 14 struct ufs_cg_private_info;
 15 struct ufs_csum;
 16 
 17 struct ufs_sb_info {
 18         struct ufs_sb_private_info * s_uspi;
 19         struct ufs_csum * s_csp;
 20         unsigned s_bytesex;
 21         unsigned s_flags;
 22         struct buffer_head ** s_ucg;
 23         struct ufs_cg_private_info * s_ucpi[UFS_MAX_GROUP_LOADED];
 24         unsigned s_cgno[UFS_MAX_GROUP_LOADED];
 25         unsigned short s_cg_loaded;
 26         unsigned s_mount_opt;
 27         struct super_block *sb;
 28         int work_queued; /* non-zero if the delayed work is queued */
 29         struct delayed_work sync_work; /* FS sync delayed work */
 30         spinlock_t work_lock; /* protects sync_work and work_queued */
 31         struct mutex s_lock;
 32 };
 33 
 34 struct ufs_inode_info {
 35         union {
 36                 __fs32  i_data[15];
 37                 __u8    i_symlink[2 * 4 * 15];
 38                 __fs64  u2_i_data[15];
 39         } i_u1;
 40         __u32   i_flags;
 41         __u32   i_shadow;
 42         __u32   i_unused1;
 43         __u32   i_unused2;
 44         __u32   i_oeftflag;
 45         __u16   i_osync;
 46         __u64   i_lastfrag;
 47         seqlock_t meta_lock;
 48         struct mutex    truncate_mutex;
 49         __u32   i_dir_start_lookup;
 50         struct inode vfs_inode;
 51 };
 52 
 53 /* mount options */
 54 #define UFS_MOUNT_ONERROR               0x0000000F
 55 #define UFS_MOUNT_ONERROR_PANIC         0x00000001
 56 #define UFS_MOUNT_ONERROR_LOCK          0x00000002
 57 #define UFS_MOUNT_ONERROR_UMOUNT        0x00000004
 58 #define UFS_MOUNT_ONERROR_REPAIR        0x00000008
 59 
 60 #define UFS_MOUNT_UFSTYPE               0x0000FFF0
 61 #define UFS_MOUNT_UFSTYPE_OLD           0x00000010
 62 #define UFS_MOUNT_UFSTYPE_44BSD         0x00000020
 63 #define UFS_MOUNT_UFSTYPE_SUN           0x00000040
 64 #define UFS_MOUNT_UFSTYPE_NEXTSTEP      0x00000080
 65 #define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD   0x00000100
 66 #define UFS_MOUNT_UFSTYPE_OPENSTEP      0x00000200
 67 #define UFS_MOUNT_UFSTYPE_SUNx86        0x00000400
 68 #define UFS_MOUNT_UFSTYPE_HP            0x00000800
 69 #define UFS_MOUNT_UFSTYPE_UFS2          0x00001000
 70 #define UFS_MOUNT_UFSTYPE_SUNOS         0x00002000
 71 
 72 #define ufs_clear_opt(o,opt)    o &= ~UFS_MOUNT_##opt
 73 #define ufs_set_opt(o,opt)      o |= UFS_MOUNT_##opt
 74 #define ufs_test_opt(o,opt)     ((o) & UFS_MOUNT_##opt)
 75 
 76 /*
 77  * Debug code
 78  */
 79 #ifdef CONFIG_UFS_DEBUG
 80 #       define UFSD(f, a...)    {                                       \
 81                 pr_debug("UFSD (%s, %d): %s:",                          \
 82                         __FILE__, __LINE__, __func__);          \
 83                 pr_debug(f, ## a);                                      \
 84         }
 85 #else
 86 #       define UFSD(f, a...)    /**/
 87 #endif
 88 
 89 /* balloc.c */
 90 extern void ufs_free_fragments (struct inode *, u64, unsigned);
 91 extern void ufs_free_blocks (struct inode *, u64, unsigned);
 92 extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
 93                              unsigned, int *, struct page *);
 94 
 95 /* cylinder.c */
 96 extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
 97 extern void ufs_put_cylinder (struct super_block *, unsigned);
 98 
 99 /* dir.c */
100 extern const struct inode_operations ufs_dir_inode_operations;
101 extern int ufs_add_link (struct dentry *, struct inode *);
102 extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
103 extern int ufs_make_empty(struct inode *, struct inode *);
104 extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
105 extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
106 extern int ufs_empty_dir (struct inode *);
107 extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
108 extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
109                          struct page *page, struct inode *inode, bool update_times);
110 
111 /* file.c */
112 extern const struct inode_operations ufs_file_inode_operations;
113 extern const struct file_operations ufs_file_operations;
114 extern const struct address_space_operations ufs_aops;
115 
116 /* ialloc.c */
117 extern void ufs_free_inode (struct inode *inode);
118 extern struct inode * ufs_new_inode (struct inode *, umode_t);
119 
120 /* inode.c */
121 extern struct inode *ufs_iget(struct super_block *, unsigned long);
122 extern int ufs_write_inode (struct inode *, struct writeback_control *);
123 extern int ufs_sync_inode (struct inode *);
124 extern void ufs_evict_inode (struct inode *);
125 extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
126 
127 /* namei.c */
128 extern const struct file_operations ufs_dir_operations;
129 
130 /* super.c */
131 extern __printf(3, 4)
132 void ufs_warning(struct super_block *, const char *, const char *, ...);
133 extern __printf(3, 4)
134 void ufs_error(struct super_block *, const char *, const char *, ...);
135 extern __printf(3, 4)
136 void ufs_panic(struct super_block *, const char *, const char *, ...);
137 void ufs_mark_sb_dirty(struct super_block *sb);
138 
139 static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
140 {
141         return sb->s_fs_info;
142 }
143 
144 static inline struct ufs_inode_info *UFS_I(struct inode *inode)
145 {
146         return container_of(inode, struct ufs_inode_info, vfs_inode);
147 }
148 
149 /*
150  * Give cylinder group number for a file system block.
151  * Give cylinder group block number for a file system block.
152  */
153 /* #define      ufs_dtog(d)     ((d) / uspi->s_fpg) */
154 static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
155 {
156         do_div(b, uspi->s_fpg);
157         return b;
158 }
159 /* #define      ufs_dtogd(d)    ((d) % uspi->s_fpg) */
160 static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
161 {
162         return do_div(b, uspi->s_fpg);
163 }
164 
165 #endif /* _UFS_UFS_H */
166 

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