diff options
Diffstat (limited to 'fs/ufs/ufs.h')
| -rw-r--r-- | fs/ufs/ufs.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/fs/ufs/ufs.h b/fs/ufs/ufs.h new file mode 100644 index 00000000000..7faa4cd71a2 --- /dev/null +++ b/fs/ufs/ufs.h @@ -0,0 +1,157 @@ +#ifndef _UFS_UFS_H +#define _UFS_UFS_H 1 + +#define UFS_MAX_GROUP_LOADED 8 +#define UFS_CGNO_EMPTY ((unsigned)-1) + +struct ufs_sb_private_info; +struct ufs_cg_private_info; +struct ufs_csum; + +struct ufs_sb_info { + struct ufs_sb_private_info * s_uspi; + struct ufs_csum * s_csp; + unsigned s_bytesex; + unsigned s_flags; + struct buffer_head ** s_ucg; + struct ufs_cg_private_info * s_ucpi[UFS_MAX_GROUP_LOADED]; + unsigned s_cgno[UFS_MAX_GROUP_LOADED]; + unsigned short s_cg_loaded; + unsigned s_mount_opt; +}; + +struct ufs_inode_info { + union { + __fs32 i_data[15]; + __u8 i_symlink[4*15]; + __fs64 u2_i_data[15]; + } i_u1; + __u32 i_flags; + __u32 i_shadow; + __u32 i_unused1; + __u32 i_unused2; + __u32 i_oeftflag; + __u16 i_osync; + __u64 i_lastfrag; + __u32 i_dir_start_lookup; + struct inode vfs_inode; +}; + +/* mount options */ +#define UFS_MOUNT_ONERROR 0x0000000F +#define UFS_MOUNT_ONERROR_PANIC 0x00000001 +#define UFS_MOUNT_ONERROR_LOCK 0x00000002 +#define UFS_MOUNT_ONERROR_UMOUNT 0x00000004 +#define UFS_MOUNT_ONERROR_REPAIR 0x00000008 + +#define UFS_MOUNT_UFSTYPE 0x0000FFF0 +#define UFS_MOUNT_UFSTYPE_OLD 0x00000010 +#define UFS_MOUNT_UFSTYPE_44BSD 0x00000020 +#define UFS_MOUNT_UFSTYPE_SUN 0x00000040 +#define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x00000080 +#define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x00000100 +#define UFS_MOUNT_UFSTYPE_OPENSTEP 0x00000200 +#define UFS_MOUNT_UFSTYPE_SUNx86 0x00000400 +#define UFS_MOUNT_UFSTYPE_HP 0x00000800 +#define UFS_MOUNT_UFSTYPE_UFS2 0x00001000 +#define UFS_MOUNT_UFSTYPE_SUNOS 0x00002000 + +#define ufs_clear_opt(o,opt) o &= ~UFS_MOUNT_##opt +#define ufs_set_opt(o,opt) o |= UFS_MOUNT_##opt +#define ufs_test_opt(o,opt) ((o) & UFS_MOUNT_##opt) + +/* + * Debug code + */ +#ifdef CONFIG_UFS_DEBUG +# define UFSD(f, a...) { \ + printk ("UFSD (%s, %d): %s:", \ + __FILE__, __LINE__, __FUNCTION__); \ + printk (f, ## a); \ + } +#else +# define UFSD(f, a...) /**/ +#endif + +/* balloc.c */ +extern void ufs_free_fragments (struct inode *, u64, unsigned); +extern void ufs_free_blocks (struct inode *, u64, unsigned); +extern u64 ufs_new_fragments(struct inode *, void *, u64, u64, + unsigned, int *, struct page *); + +/* cylinder.c */ +extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned); +extern void ufs_put_cylinder (struct super_block *, unsigned); + +/* dir.c */ +extern const struct inode_operations ufs_dir_inode_operations; +extern int ufs_add_link (struct dentry *, struct inode *); +extern ino_t ufs_inode_by_name(struct inode *, struct dentry *); +extern int ufs_make_empty(struct inode *, struct inode *); +extern struct ufs_dir_entry *ufs_find_entry(struct inode *, struct dentry *, struct page **); +extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *); +extern int ufs_empty_dir (struct inode *); +extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **); +extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de, + struct page *page, struct inode *inode); + +/* file.c */ +extern const struct inode_operations ufs_file_inode_operations; +extern const struct file_operations ufs_file_operations; + +extern const struct address_space_operations ufs_aops; + +/* ialloc.c */ +extern void ufs_free_inode (struct inode *inode); +extern struct inode * ufs_new_inode (struct inode *, int); + +/* inode.c */ +extern void ufs_read_inode (struct inode *); +extern void ufs_put_inode (struct inode *); +extern int ufs_write_inode (struct inode *, int); +extern int ufs_sync_inode (struct inode *); +extern void ufs_delete_inode (struct inode *); +extern struct buffer_head * ufs_bread (struct inode *, unsigned, int, int *); +extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create); + +/* namei.c */ +extern const struct file_operations ufs_dir_operations; + +/* super.c */ +extern void ufs_warning (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4))); +extern void ufs_error (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4))); +extern void ufs_panic (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4))); + +/* symlink.c */ +extern const struct inode_operations ufs_fast_symlink_inode_operations; + +/* truncate.c */ +extern int ufs_truncate (struct inode *, loff_t); + +static inline struct ufs_sb_info *UFS_SB(struct super_block *sb) +{ + return sb->s_fs_info; +} + +static inline struct ufs_inode_info *UFS_I(struct inode *inode) +{ + return container_of(inode, struct ufs_inode_info, vfs_inode); +} + +/* + * Give cylinder group number for a file system block. + * Give cylinder group block number for a file system block. + */ +/* #define ufs_dtog(d) ((d) / uspi->s_fpg) */ +static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b) +{ + do_div(b, uspi->s_fpg); + return b; +} +/* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */ +static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b) +{ + return do_div(b, uspi->s_fpg); +} + +#endif /* _UFS_UFS_H */ |