fs/ufs/ufs.h

   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
   7 struct ufs_sb_private_info;
   8 struct ufs_cg_private_info;
   9 struct ufs_csum;
  10
  11 struct 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 };
  28
  29 struct ufs_inode_info {
  30         union {
  31                 __fs32  i_data[15];
  32                 __u8    i_symlink[2 * 4 * 15];
  33                 __fs64  u2_i_data[15];
  34         } i_u1;
  35         __u32   i_flags;
  36         __u32   i_shadow;
  37         __u32   i_unused1;
  38         __u32   i_unused2;
  39         __u32   i_oeftflag;
  40         __u16   i_osync;
  41         __u64   i_lastfrag;
  42         __u32   i_dir_start_lookup;
  43         struct inode vfs_inode;
  44 };
  45
  46 /* mount options */
  47 #define UFS_MOUNT_ONERROR               0x0000000F
  48 #define UFS_MOUNT_ONERROR_PANIC         0x00000001
  49 #define UFS_MOUNT_ONERROR_LOCK          0x00000002
  50 #define UFS_MOUNT_ONERROR_UMOUNT        0x00000004
  51 #define UFS_MOUNT_ONERROR_REPAIR        0x00000008
  52
  53 #define UFS_MOUNT_UFSTYPE               0x0000FFF0
  54 #define UFS_MOUNT_UFSTYPE_OLD           0x00000010
  55 #define UFS_MOUNT_UFSTYPE_44BSD         0x00000020
  56 #define UFS_MOUNT_UFSTYPE_SUN           0x00000040
  57 #define UFS_MOUNT_UFSTYPE_NEXTSTEP      0x00000080
  58 #define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD   0x00000100
  59 #define UFS_MOUNT_UFSTYPE_OPENSTEP      0x00000200
  60 #define UFS_MOUNT_UFSTYPE_SUNx86        0x00000400
  61 #define UFS_MOUNT_UFSTYPE_HP            0x00000800
  62 #define UFS_MOUNT_UFSTYPE_UFS2          0x00001000
  63 #define UFS_MOUNT_UFSTYPE_SUNOS         0x00002000
  64
  65 #define ufs_clear_opt(o,opt)    o &= ~UFS_MOUNT_##opt
  66 #define ufs_set_opt(o,opt)      o |= UFS_MOUNT_##opt
  67 #define ufs_test_opt(o,opt)     ((o) & UFS_MOUNT_##opt)
  68
  69 /*
  70  * Debug code
  71  */
  72 #ifdef CONFIG_UFS_DEBUG
  73 #       define UFSD(f, a...)    {                                       \
  74                 printk ("UFSD (%s, %d): %s:",                           \
  75                         __FILE__, __LINE__, __func__);          \
  76                 printk (f, ## a);                                       \
  77         }
  78 #else
  79 #       define UFSD(f, a...)    /**/
  80 #endif
  81
  82 /* balloc.c */
  83 extern void ufs_free_fragments (struct inode *, u64, unsigned);
  84 extern void ufs_free_blocks (struct inode *, u64, unsigned);
  85 extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
  86                              unsigned, int *, struct page *);
  87
  88 /* cylinder.c */
  89 extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
  90 extern void ufs_put_cylinder (struct super_block *, unsigned);
  91
  92 /* dir.c */
  93 extern const struct inode_operations ufs_dir_inode_operations;
  94 extern int ufs_add_link (struct dentry *, struct inode *);
  95 extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
  96 extern int ufs_make_empty(struct inode *, struct inode *);
  97 extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
  98 extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
  99 extern int ufs_empty_dir (struct inode *);
 100 extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
 101 extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
 102                          struct page *page, struct inode *inode);
 103
 104 /* file.c */
 105 extern const struct inode_operations ufs_file_inode_operations;
 106 extern const struct file_operations ufs_file_operations;
 107 extern const struct address_space_operations ufs_aops;
 108
 109 /* ialloc.c */
 110 extern void ufs_free_inode (struct inode *inode);
 111 extern struct inode * ufs_new_inode (struct inode *, umode_t);
 112
 113 /* inode.c */
 114 extern struct inode *ufs_iget(struct super_block *, unsigned long);
 115 extern int ufs_write_inode (struct inode *, struct writeback_control *);
 116 extern int ufs_sync_inode (struct inode *);
 117 extern void ufs_evict_inode (struct inode *);
 118 extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create);
 119
 120 /* namei.c */
 121 extern const struct file_operations ufs_dir_operations;
 122
 123 /* super.c */
 124 extern __printf(3, 4)
 125 void ufs_warning(struct super_block *, const char *, const char *, ...);
 126 extern __printf(3, 4)
 127 void ufs_error(struct super_block *, const char *, const char *, ...);
 128 extern __printf(3, 4)
 129 void ufs_panic(struct super_block *, const char *, const char *, ...);
 130 void ufs_mark_sb_dirty(struct super_block *sb);
 131
 132 /* symlink.c */
 133 extern const struct inode_operations ufs_fast_symlink_inode_operations;
 134 extern const struct inode_operations ufs_symlink_inode_operations;
 135
 136 /* truncate.c */
 137 extern int ufs_truncate (struct inode *, loff_t);
 138 extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
 139
 140 static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
 141 {
 142         return sb->s_fs_info;
 143 }
 144
 145 static inline struct ufs_inode_info *UFS_I(struct inode *inode)
 146 {
 147         return container_of(inode, struct ufs_inode_info, vfs_inode);
 148 }
 149
 150 /*
 151  * Give cylinder group number for a file system block.
 152  * Give cylinder group block number for a file system block.
 153  */
 154 /* #define      ufs_dtog(d)     ((d) / uspi->s_fpg) */
 155 static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
 156 {
 157         do_div(b, uspi->s_fpg);
 158         return b;
 159 }
 160 /* #define      ufs_dtogd(d)    ((d) % uspi->s_fpg) */
 161 static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
 162 {
 163         return do_div(b, uspi->s_fpg);
 164 }
 165
 166 extern void lock_ufs(struct super_block *sb);
 167 extern void unlock_ufs(struct super_block *sb);
 168
 169 #endif /* _UFS_UFS_H */