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 };
  22
  23 struct ufs_inode_info {
  24         union {
  25                 __fs32  i_data[15];
  26                 __u8    i_symlink[2 * 4 * 15];
  27                 __fs64  u2_i_data[15];
  28         } i_u1;
  29         __u32   i_flags;
  30         __u32   i_shadow;
  31         __u32   i_unused1;
  32         __u32   i_unused2;
  33         __u32   i_oeftflag;
  34         __u16   i_osync;
  35         __u64   i_lastfrag;
  36         __u32   i_dir_start_lookup;
  37         struct inode vfs_inode;
  38 };
  39
  40 /* mount options */
  41 #define UFS_MOUNT_ONERROR               0x0000000F
  42 #define UFS_MOUNT_ONERROR_PANIC         0x00000001
  43 #define UFS_MOUNT_ONERROR_LOCK          0x00000002
  44 #define UFS_MOUNT_ONERROR_UMOUNT        0x00000004
  45 #define UFS_MOUNT_ONERROR_REPAIR        0x00000008
  46
  47 #define UFS_MOUNT_UFSTYPE               0x0000FFF0
  48 #define UFS_MOUNT_UFSTYPE_OLD           0x00000010
  49 #define UFS_MOUNT_UFSTYPE_44BSD         0x00000020
  50 #define UFS_MOUNT_UFSTYPE_SUN           0x00000040
  51 #define UFS_MOUNT_UFSTYPE_NEXTSTEP      0x00000080
  52 #define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD   0x00000100
  53 #define UFS_MOUNT_UFSTYPE_OPENSTEP      0x00000200
  54 #define UFS_MOUNT_UFSTYPE_SUNx86        0x00000400
  55 #define UFS_MOUNT_UFSTYPE_HP            0x00000800
  56 #define UFS_MOUNT_UFSTYPE_UFS2          0x00001000
  57 #define UFS_MOUNT_UFSTYPE_SUNOS         0x00002000
  58
  59 #define ufs_clear_opt(o,opt)    o &= ~UFS_MOUNT_##opt
  60 #define ufs_set_opt(o,opt)      o |= UFS_MOUNT_##opt
  61 #define ufs_test_opt(o,opt)     ((o) & UFS_MOUNT_##opt)
  62
  63 /*
  64  * Debug code
  65  */
  66 #ifdef CONFIG_UFS_DEBUG
  67 #       define UFSD(f, a...)    {                                       \
  68                 printk ("UFSD (%s, %d): %s:",                           \
  69                         __FILE__, __LINE__, __func__);          \
  70                 printk (f, ## a);                                       \
  71         }
  72 #else
  73 #       define UFSD(f, a...)    /**/
  74 #endif
  75
  76 /* balloc.c */
  77 extern void ufs_free_fragments (struct inode *, u64, unsigned);
  78 extern void ufs_free_blocks (struct inode *, u64, unsigned);
  79 extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
  80                              unsigned, int *, struct page *);
  81
  82 /* cylinder.c */
  83 extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
  84 extern void ufs_put_cylinder (struct super_block *, unsigned);
  85
  86 /* dir.c */
  87 extern const struct inode_operations ufs_dir_inode_operations;
  88 extern int ufs_add_link (struct dentry *, struct inode *);
  89 extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
  90 extern int ufs_make_empty(struct inode *, struct inode *);
  91 extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
  92 extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
  93 extern int ufs_empty_dir (struct inode *);
  94 extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
  95 extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
  96                          struct page *page, struct inode *inode);
  97
  98 /* file.c */
  99 extern const struct inode_operations ufs_file_inode_operations;
 100 extern const struct file_operations ufs_file_operations;
 101 extern const struct address_space_operations ufs_aops;
 102
 103 /* ialloc.c */
 104 extern void ufs_free_inode (struct inode *inode);
 105 extern struct inode * ufs_new_inode (struct inode *, int);
 106
 107 /* inode.c */
 108 extern struct inode *ufs_iget(struct super_block *, unsigned long);
 109 extern int ufs_write_inode (struct inode *, struct writeback_control *);
 110 extern int ufs_sync_inode (struct inode *);
 111 extern void ufs_evict_inode (struct inode *);
 112 extern struct buffer_head * ufs_bread (struct inode *, unsigned, int, int *);
 113 extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create);
 114
 115 /* namei.c */
 116 extern const struct file_operations ufs_dir_operations;
 117
 118 /* super.c */
 119 extern void ufs_warning (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
 120 extern void ufs_error (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
 121 extern void ufs_panic (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
 122
 123 /* symlink.c */
 124 extern const struct inode_operations ufs_fast_symlink_inode_operations;
 125 extern const struct inode_operations ufs_symlink_inode_operations;
 126
 127 /* truncate.c */
 128 extern int ufs_truncate (struct inode *, loff_t);
 129 extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
 130
 131 static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
 132 {
 133         return sb->s_fs_info;
 134 }
 135
 136 static inline struct ufs_inode_info *UFS_I(struct inode *inode)
 137 {
 138         return container_of(inode, struct ufs_inode_info, vfs_inode);
 139 }
 140
 141 /*
 142  * Give cylinder group number for a file system block.
 143  * Give cylinder group block number for a file system block.
 144  */
 145 /* #define      ufs_dtog(d)     ((d) / uspi->s_fpg) */
 146 static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
 147 {
 148         do_div(b, uspi->s_fpg);
 149         return b;
 150 }
 151 /* #define      ufs_dtogd(d)    ((d) % uspi->s_fpg) */
 152 static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
 153 {
 154         return do_div(b, uspi->s_fpg);
 155 }
 156
 157 #endif /* _UFS_UFS_H */