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#ifndef MKSQUASHFS_H
#define MKSQUASHFS_H
/*
* Squashfs
*
* Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
* 2012, 2013, 2014, 2019, 2021, 2022, 2023
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* mksquashfs.h
*
*/
struct dir_info {
char *pathname;
char *subpath;
unsigned int count;
unsigned int directory_count;
unsigned int depth;
unsigned int excluded;
char dir_is_ldir;
struct dir_ent *dir_ent;
struct dir_ent *list;
DIR *linuxdir;
};
struct dir_ent {
char *name;
char *source_name;
char *nonstandard_pathname;
struct inode_info *inode;
struct dir_info *dir;
struct dir_info *our_dir;
struct dir_ent *next;
};
struct inode_info {
struct stat buf;
struct inode_info *next;
struct pseudo_dev *pseudo;
struct tar_file *tar_file;
struct pseudo_xattr *xattr;
squashfs_inode inode;
unsigned int inode_number;
unsigned int nlink;
char dummy_root_dir;
char type;
char read;
char root_entry;
char no_fragments;
char always_use_fragments;
char noD;
char noF;
char tarfile;
char symlink[0];
};
/* in memory file info */
struct file_info {
long long file_size;
long long bytes;
long long start;
long long sparse;
unsigned int *block_list;
struct file_info *frag_next;
struct file_info *block_next;
struct fragment *fragment;
struct dup_info *dup;
unsigned int blocks;
unsigned short checksum;
unsigned short fragment_checksum;
char have_frag_checksum;
char have_checksum;
};
struct dup_info {
struct file_info *file;
struct file_info *frag;
struct dup_info *next;
};
/* fragment block data structures */
struct fragment {
unsigned int index;
int offset;
int size;
};
/* in memory uid tables */
#define ID_ENTRIES 256
#define ID_HASH(id) (id & (ID_ENTRIES - 1))
#define ISA_UID 1
#define ISA_GID 2
struct id {
unsigned int id;
int index;
char flags;
struct id *next;
};
/* fragment to file mapping used when appending */
struct append_file {
struct file_info *file;
struct append_file *next;
};
/*
* Amount of physical memory to use by default, and the default queue
* ratios
*/
#define SQUASHFS_TAKE 4
#define SQUASHFS_READQ_MEM 4
#define SQUASHFS_BWRITEQ_MEM 4
#define SQUASHFS_FWRITEQ_MEM 4
/*
* Lowest amount of physical memory considered viable for Mksquashfs
* to run in Mbytes
*/
#define SQUASHFS_LOWMEM 64
/* offset of data in compressed metadata blocks (allowing room for
* compressed size */
#define BLOCK_OFFSET 2
#ifdef REPRODUCIBLE_DEFAULT
#define NOREP_STR
#define REP_STR " (default)"
#define REP_DEF 1
#else
#define NOREP_STR " (default)"
#define REP_STR
#define REP_DEF 0
#endif
/* in memory directory data */
#define I_COUNT_SIZE 128
#define DIR_ENTRIES 32
#define INODE_HASH_SIZE 65536
#define INODE_HASH_MASK (INODE_HASH_SIZE - 1)
#define INODE_HASH(dev, ino) (ino & INODE_HASH_MASK)
struct cached_dir_index {
struct squashfs_dir_index index;
char *name;
};
struct directory {
unsigned int start_block;
unsigned int size;
unsigned char *buff;
unsigned char *p;
unsigned int entry_count;
unsigned char *entry_count_p;
unsigned int i_count;
unsigned int i_size;
struct cached_dir_index *index;
unsigned char *index_count_p;
unsigned int inode_number;
};
/* exclude file handling */
/* list of exclude dirs/files */
struct exclude_info {
dev_t st_dev;
ino_t st_ino;
};
#define EXCLUDE_SIZE 8192
struct pathname {
int names;
struct path_entry *name;
};
struct pathnames {
int count;
struct pathname *path[0];
};
#define PATHS_ALLOC_SIZE 10
#define FRAG_SIZE 32768
struct old_root_entry_info {
char *name;
struct inode_info inode;
};
#define ALLOC_SIZE 128
/* Maximum transfer size for Linux read() call on both 32-bit and 64-bit systems.
* See READ(2) */
#define MAXIMUM_READ_SIZE 0x7ffff000
extern int sleep_time;
extern struct cache *reader_buffer, *fragment_buffer, *reserve_cache;
extern struct cache *bwriter_buffer, *fwriter_buffer;
extern struct queue *to_reader, *to_deflate, *to_writer, *from_writer,
*to_frag, *locked_fragment, *to_process_frag;
extern struct append_file **file_mapping;
extern struct seq_queue *to_main, *to_order;
extern pthread_mutex_t fragment_mutex, dup_mutex;
extern struct squashfs_fragment_entry *fragment_table;
extern struct compressor *comp;
extern int block_size;
extern int block_log;
extern int sorted;
extern int noF;
extern int noD;
extern int old_exclude;
extern int no_fragments;
extern int always_use_fragments;
extern struct file_info **dupl_frag;
extern int duplicate_checking;
extern int no_hardlinks;
extern struct dir_info *root_dir;
extern struct pathnames *paths;
extern int tarfile;
extern int root_mode_opt;
extern mode_t root_mode;
extern int root_time_opt;
extern unsigned int root_time;
extern int root_uid_opt;
extern unsigned int root_uid;
extern int root_gid_opt;
extern unsigned int root_gid;
extern struct inode_info *inode_info[INODE_HASH_SIZE];
extern int quiet;
extern int sequence_count;
extern int pseudo_override;
extern int global_uid_opt;
extern unsigned int global_uid;
extern int global_gid_opt;
extern unsigned int global_gid;
extern int sleep_time;
extern int read_fs_bytes(int, long long, long long, void *);
extern void add_file(long long, long long, long long, unsigned int *, int,
unsigned int, int, int);
extern struct id *create_id(unsigned int);
extern unsigned int get_uid(unsigned int);
extern unsigned int get_guid(unsigned int);
extern long long read_bytes(int, void *, long long);
extern unsigned short get_checksum_mem(char *, int);
extern int reproducible;
extern void *reader(void *arg);
extern squashfs_inode create_inode(struct dir_info *dir_info,
struct dir_ent *dir_ent, int type, long long byte_size,
long long start_block, unsigned int offset, unsigned int *block_list,
struct fragment *fragment, struct directory *dir_in, long long sparse);
extern void free_fragment(struct fragment *fragment);
extern struct file_info *write_file(struct dir_ent *dir_ent, int *dup);
extern int excluded(char *name, struct pathnames *paths, struct pathnames **new);
extern struct dir_ent *lookup_name(struct dir_info *dir, char *name);
extern struct dir_ent *create_dir_entry(char *name, char *source_name,
char *nonstandard_pathname, struct dir_info *dir);
extern void add_dir_entry(struct dir_ent *dir_ent, struct dir_info *sub_dir,
struct inode_info *inode_info);
extern void free_dir_entry(struct dir_ent *dir_ent);
extern void free_dir(struct dir_info *dir);
extern struct dir_info *create_dir(char *pathname, char *subpath, unsigned int depth);
extern char *subpathname(struct dir_ent *dir_ent);
extern struct dir_info *scan1_opendir(char *pathname, char *subpath, unsigned int depth);
extern squashfs_inode do_directory_scans(struct dir_ent *dir_ent, int progress);
extern struct inode_info *lookup_inode(struct stat *buf);
extern int exec_date(char *, unsigned int *);
#endif
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