linux/fs/ufs/ufs.h
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   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
   7struct ufs_sb_private_info;
   8struct ufs_cg_private_info;
   9struct ufs_csum;
  10
  11struct 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
  30struct 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 */
  84extern void ufs_free_fragments (struct inode *, u64, unsigned);
  85extern void ufs_free_blocks (struct inode *, u64, unsigned);
  86extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
  87                             unsigned, int *, struct page *);
  88
  89/* cylinder.c */
  90extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
  91extern void ufs_put_cylinder (struct super_block *, unsigned);
  92
  93/* dir.c */
  94extern const struct inode_operations ufs_dir_inode_operations;
  95extern int ufs_add_link (struct dentry *, struct inode *);
  96extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
  97extern int ufs_make_empty(struct inode *, struct inode *);
  98extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
  99extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
 100extern int ufs_empty_dir (struct inode *);
 101extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
 102extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
 103                         struct page *page, struct inode *inode);
 104
 105/* file.c */
 106extern const struct inode_operations ufs_file_inode_operations;
 107extern const struct file_operations ufs_file_operations;
 108extern const struct address_space_operations ufs_aops;
 109
 110/* ialloc.c */
 111extern void ufs_free_inode (struct inode *inode);
 112extern struct inode * ufs_new_inode (struct inode *, umode_t);
 113
 114/* inode.c */
 115extern struct inode *ufs_iget(struct super_block *, unsigned long);
 116extern int ufs_write_inode (struct inode *, struct writeback_control *);
 117extern int ufs_sync_inode (struct inode *);
 118extern void ufs_evict_inode (struct inode *);
 119extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create);
 120
 121/* namei.c */
 122extern const struct file_operations ufs_dir_operations;
 123
 124/* super.c */
 125extern __printf(3, 4)
 126void ufs_warning(struct super_block *, const char *, const char *, ...);
 127extern __printf(3, 4)
 128void ufs_error(struct super_block *, const char *, const char *, ...);
 129extern __printf(3, 4)
 130void ufs_panic(struct super_block *, const char *, const char *, ...);
 131void ufs_mark_sb_dirty(struct super_block *sb);
 132
 133/* symlink.c */
 134extern const struct inode_operations ufs_fast_symlink_inode_operations;
 135extern const struct inode_operations ufs_symlink_inode_operations;
 136
 137/* truncate.c */
 138extern int ufs_truncate (struct inode *, loff_t);
 139extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
 140
 141static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
 142{
 143        return sb->s_fs_info;
 144}
 145
 146static 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) */
 156static 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) */
 162static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
 163{
 164        return do_div(b, uspi->s_fpg);
 165}
 166
 167extern void lock_ufs(struct super_block *sb);
 168extern void unlock_ufs(struct super_block *sb);
 169
 170#endif /* _UFS_UFS_H */
 171
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