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         struct mutex s_lock;
  28 };
  29
  30 struct 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 */
  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 */
 134 extern const struct inode_operations ufs_fast_symlink_inode_operations;
 135 extern const struct inode_operations ufs_symlink_inode_operations;
 136
 137 /* truncate.c */
 138 extern int ufs_truncate (struct inode *, loff_t);
 139 extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
 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 */