-
#ifndef _ISOFS_FS_H
#define _ISOFS_FS_H
#define ISOFS_SUPER_MAGIC 0x9660
-#ifdef __KERNEL__
-/* Number conversion inlines, named after the section in ISO 9660
- they correspond to. */
-
-#include <asm/byteorder.h>
-#include <asm/unaligned.h>
-#include <linux/iso_fs_i.h>
-#include <linux/iso_fs_sb.h>
-
-static inline struct isofs_sb_info *ISOFS_SB(struct super_block *sb)
-{
- return sb->s_fs_info;
-}
-
-static inline struct iso_inode_info *ISOFS_I(struct inode *inode)
-{
- return container_of(inode, struct iso_inode_info, vfs_inode);
-}
-
-static inline int isonum_711(char *p)
-{
- return *(u8 *)p;
-}
-static inline int isonum_712(char *p)
-{
- return *(s8 *)p;
-}
-static inline unsigned int isonum_721(char *p)
-{
- return le16_to_cpu(get_unaligned((__le16 *)p));
-}
-static inline unsigned int isonum_722(char *p)
-{
- return be16_to_cpu(get_unaligned((__le16 *)p));
-}
-static inline unsigned int isonum_723(char *p)
-{
- /* Ignore bigendian datum due to broken mastering programs */
- return le16_to_cpu(get_unaligned((__le16 *)p));
-}
-static inline unsigned int isonum_731(char *p)
-{
- return le32_to_cpu(get_unaligned((__le32 *)p));
-}
-static inline unsigned int isonum_732(char *p)
-{
- return be32_to_cpu(get_unaligned((__le32 *)p));
-}
-static inline unsigned int isonum_733(char *p)
-{
- /* Ignore bigendian datum due to broken mastering programs */
- return le32_to_cpu(get_unaligned((__le32 *)p));
-}
-extern int iso_date(char *, int);
-
-struct inode; /* To make gcc happy */
-
-extern int parse_rock_ridge_inode(struct iso_directory_record *, struct inode *);
-extern int get_rock_ridge_filename(struct iso_directory_record *, char *, struct inode *);
-extern int isofs_name_translate(struct iso_directory_record *, char *, struct inode *);
-
-int get_joliet_filename(struct iso_directory_record *, unsigned char *, struct inode *);
-int get_acorn_filename(struct iso_directory_record *, char *, struct inode *);
-
-extern struct dentry *isofs_lookup(struct inode *, struct dentry *, struct nameidata *);
-extern struct buffer_head *isofs_bread(struct inode *, sector_t);
-extern int isofs_get_blocks(struct inode *, sector_t, struct buffer_head **, unsigned long);
-
-extern struct inode *isofs_iget(struct super_block *sb,
- unsigned long block,
- unsigned long offset);
-
-/* Because the inode number is no longer relevant to finding the
- * underlying meta-data for an inode, we are free to choose a more
- * convenient 32-bit number as the inode number. The inode numbering
- * scheme was recommended by Sergey Vlasov and Eric Lammerts. */
-static inline unsigned long isofs_get_ino(unsigned long block,
- unsigned long offset,
- unsigned long bufbits)
-{
- return (block << (bufbits - 5)) | (offset >> 5);
-}
-
-/* Every directory can have many redundant directory entries scattered
- * throughout the directory tree. First there is the directory entry
- * with the name of the directory stored in the parent directory.
- * Then, there is the "." directory entry stored in the directory
- * itself. Finally, there are possibly many ".." directory entries
- * stored in all the subdirectories.
- *
- * In order for the NFS get_parent() method to work and for the
- * general consistency of the dcache, we need to make sure the
- * "i_iget5_block" and "i_iget5_offset" all point to exactly one of
- * the many redundant entries for each directory. We normalize the
- * block and offset by always making them point to the "." directory.
- *
- * Notice that we do not use the entry for the directory with the name
- * that is located in the parent directory. Even though choosing this
- * first directory is more natural, it is much easier to find the "."
- * entry in the NFS get_parent() method because it is implicitly
- * encoded in the "extent + ext_attr_length" fields of _all_ the
- * redundant entries for the directory. Thus, it can always be
- * reached regardless of which directory entry you have in hand.
- *
- * This works because the "." entry is simply the first directory
- * record when you start reading the file that holds all the directory
- * records, and this file starts at "extent + ext_attr_length" blocks.
- * Because the "." entry is always the first entry listed in the
- * directories file, the normalized "offset" value is always 0.
- *
- * You should pass the directory entry in "de". On return, "block"
- * and "offset" will hold normalized values. Only directories are
- * affected making it safe to call even for non-directory file
- * types. */
-static inline void
-isofs_normalize_block_and_offset(struct iso_directory_record* de,
- unsigned long *block,
- unsigned long *offset)
-{
- /* Only directories are normalized. */
- if (de->flags[0] & 2) {
- *offset = 0;
- *block = (unsigned long)isonum_733(de->extent)
- + (unsigned long)isonum_711(de->ext_attr_length);
- }
-}
-
-extern struct inode_operations isofs_dir_inode_operations;
-extern struct file_operations isofs_dir_operations;
-extern struct address_space_operations isofs_symlink_aops;
-extern struct export_operations isofs_export_ops;
-
-/* The following macros are used to check for memory leaks. */
-#ifdef LEAK_CHECK
-#define free_s leak_check_free_s
-#define malloc leak_check_malloc
-#define sb_bread leak_check_bread
-#define brelse leak_check_brelse
-extern void * leak_check_malloc(unsigned int size);
-extern void leak_check_free_s(void * obj, int size);
-extern struct buffer_head * leak_check_bread(struct super_block *sb, int block);
-extern void leak_check_brelse(struct buffer_head * bh);
-#endif /* LEAK_CHECK */
-
-#endif /* __KERNEL__ */
-
#endif
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