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Diffstat (limited to 'fs/squashfs/squashfs.h')
-rw-r--r-- | fs/squashfs/squashfs.h | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h new file mode 100644 index 0000000000..9ad6534e46 --- /dev/null +++ b/fs/squashfs/squashfs.h @@ -0,0 +1,142 @@ +/* + * Squashfs - a compressed read only filesystem for Linux + * + * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008 + * Phillip Lougher <phillip@squashfs.org.uk> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2, + * or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * squashfs.h + */ + +#include <printk.h> +#include <fs.h> +#include <linux/fs.h> +#include <linux/kernel.h> + +#define DEBUG +#define pgoff_t unsigned long + +struct squashfs_priv { + struct super_block sb; +}; + +/* + * We "simulate" the Linux page struct much simpler here + */ +struct page { + pgoff_t index; + void *addr; + struct inode *inode; +}; + + +struct squashfs_page { + struct page real_page; + char **buf; + int idx; + int data_block; +}; + +static inline struct squashfs_page *squashfs_page(struct page *page) +{ + return container_of(page, struct squashfs_page, real_page); +} +#define TRACE(s, args...) pr_debug("SQUASHFS: "s, ## args) + +#define ERROR(s, args...) pr_err("SQUASHFS error: "s, ## args) + +#define WARNING(s, args...) pr_warn("SQUASHFS: "s, ## args) + +struct inode *iget_locked_squashfs(struct super_block *sb, unsigned long ino); +char *squashfs_devread(struct squashfs_sb_info *fs, int byte_offset, + int byte_len); +extern int squashfs_mount(struct fs_device_d *fsdev, + int silent); +extern void squashfs_put_super(struct super_block *sb); + +/* block.c */ +extern int squashfs_read_data(struct super_block *, u64, int, u64 *, + struct squashfs_page_actor *); + +/* cache.c */ +extern struct squashfs_cache *squashfs_cache_init(char *, int, int); +extern void squashfs_cache_delete(struct squashfs_cache *); +extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *, + struct squashfs_cache *, u64, int); +extern void squashfs_cache_put(struct squashfs_cache_entry *); +extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int); +extern int squashfs_read_metadata(struct super_block *, void *, u64 *, + int *, int); +extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *, + u64, int); +extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *, + u64, int); +extern void *squashfs_read_table(struct super_block *, u64, int); + +/* decompressor.c */ +extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int); +extern void *squashfs_decompressor_setup(struct super_block *, unsigned short); + +/* decompressor_xxx.c */ +extern void *squashfs_decompressor_create(struct squashfs_sb_info *, void *); +extern void squashfs_decompressor_destroy(struct squashfs_sb_info *); +extern int squashfs_decompress(struct squashfs_sb_info *, char **, + int, int, int, struct squashfs_page_actor *); +extern int squashfs_max_decompressors(void); + +/* fragment.c */ +extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *); +extern __le64 *squashfs_read_fragment_index_table(struct super_block *, + u64, u64, unsigned int); +/* file.c */ +void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int, + int); +extern int squashfs_readpage(struct file *file, struct page *page); + +/* file_xxx.c */ +extern int squashfs_readpage_block(struct page *, u64, int); + +/* id.c */ +extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *); +extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64, + unsigned short); + +/* inode.c */ +extern struct inode *squashfs_iget(struct super_block *, long long, + unsigned int); +extern int squashfs_read_inode(struct inode *, long long); + +/* + * Inodes, files, decompressor and xattr operations + */ + +/* dir.c */ +extern const struct file_operations squashfs_dir_ops; + +/* export.c */ +extern const struct export_operations squashfs_export_ops; + +/* file.c */ +extern const struct address_space_operations squashfs_aops; + +/* inode.c */ +extern const struct inode_operations squashfs_inode_ops; + +/* namei.c */ +extern struct inode *squashfs_lookup(struct inode *dir, const char *cur_name, + unsigned int flags); +extern int squashfs_lookup_next(struct inode *dir, + char *root_name, char *cur_name); + +/* symlink.c */ +extern const struct address_space_operations squashfs_symlink_aops; +extern const struct inode_operations squashfs_symlink_inode_ops; |