fs/ufs/ufs.h

   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 */