mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 08:58:07 +00:00
c08a831c74
This makes it harder for accidental or malicious changes to squashfs_xattr_handlers at runtime. Cc: Phillip Lougher <phillip@squashfs.org.uk> Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com> Link: https://lore.kernel.org/r/20230930050033.41174-25-wedsonaf@gmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>
114 lines
3.8 KiB
C
114 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* Squashfs - a compressed read only filesystem for Linux
|
|
*
|
|
* Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
|
|
* Phillip Lougher <phillip@squashfs.org.uk>
|
|
*
|
|
* squashfs.h
|
|
*/
|
|
|
|
#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)
|
|
|
|
/* 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 */
|
|
|
|
struct squashfs_decompressor_thread_ops {
|
|
void * (*create)(struct squashfs_sb_info *msblk, void *comp_opts);
|
|
void (*destroy)(struct squashfs_sb_info *msblk);
|
|
int (*decompress)(struct squashfs_sb_info *msblk, struct bio *bio,
|
|
int offset, int length, struct squashfs_page_actor *output);
|
|
int (*max_decompressors)(void);
|
|
};
|
|
|
|
#ifdef CONFIG_SQUASHFS_DECOMP_SINGLE
|
|
extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_single;
|
|
#endif
|
|
#ifdef CONFIG_SQUASHFS_DECOMP_MULTI
|
|
extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_multi;
|
|
#endif
|
|
#ifdef CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU
|
|
extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_percpu;
|
|
#endif
|
|
|
|
/* export.c */
|
|
extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64,
|
|
unsigned int);
|
|
|
|
/* 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_fill_page(struct page *, struct squashfs_cache_entry *, int, int);
|
|
void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int,
|
|
int);
|
|
|
|
/* file_xxx.c */
|
|
extern int squashfs_readpage_block(struct page *, u64, int, 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);
|
|
|
|
/* xattr.c */
|
|
extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
|
|
|
|
/*
|
|
* 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 const struct inode_operations squashfs_dir_inode_ops;
|
|
|
|
/* symlink.c */
|
|
extern const struct address_space_operations squashfs_symlink_aops;
|
|
extern const struct inode_operations squashfs_symlink_inode_ops;
|
|
|
|
/* xattr.c */
|
|
extern const struct xattr_handler * const squashfs_xattr_handlers[];
|