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 };
  24
  25 struct 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 */
  79 extern void ufs_free_fragments (struct inode *, u64, unsigned);
  80 extern void ufs_free_blocks (struct inode *, u64, unsigned);
  81 extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
  82                              unsigned, int *, struct page *);
  83
  84 /* cylinder.c */
  85 extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
  86 extern void ufs_put_cylinder (struct super_block *, unsigned);
  87
  88 /* dir.c */
  89 extern const struct inode_operations ufs_dir_inode_operations;
  90 extern int ufs_add_link (struct dentry *, struct inode *);
  91 extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
  92 extern int ufs_make_empty(struct inode *, struct inode *);
  93 extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
  94 extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
  95 extern int ufs_empty_dir (struct inode *);
  96 extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
  97 extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
  98                          struct page *page, struct inode *inode);
  99
 100 /* file.c */
 101 extern const struct inode_operations ufs_file_inode_operations;
 102 extern const struct file_operations ufs_file_operations;
 103 extern const struct address_space_operations ufs_aops;
 104
 105 /* ialloc.c */
 106 extern void ufs_free_inode (struct inode *inode);
 107 extern struct inode * ufs_new_inode (struct inode *, int);
 108
 109 /* inode.c */
 110 extern struct inode *ufs_iget(struct super_block *, unsigned long);
 111 extern int ufs_write_inode (struct inode *, struct writeback_control *);
 112 extern int ufs_sync_inode (struct inode *);
 113 extern void ufs_evict_inode (struct inode *);
 114 extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create);
 115
 116 /* namei.c */
 117 extern const struct file_operations ufs_dir_operations;
 118
 119 /* super.c */
 120 extern void ufs_warning (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
 121 extern void ufs_error (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
 122 extern void ufs_panic (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
 123
 124 /* symlink.c */
 125 extern const struct inode_operations ufs_fast_symlink_inode_operations;
 126 extern const struct inode_operations ufs_symlink_inode_operations;
 127
 128 /* truncate.c */
 129 extern int ufs_truncate (struct inode *, loff_t);
 130 extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
 131
 132 static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
 133 {
 134         return sb->s_fs_info;
 135 }
 136
 137 static 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) */
 147 static 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) */
 153 static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
 154 {
 155         return do_div(b, uspi->s_fpg);
 156 }
 157
 158 extern void lock_ufs(struct super_block *sb);
 159 extern void unlock_ufs(struct super_block *sb);
 160
 161 #endif /* _UFS_UFS_H */