mirror of https://github.com/ventoy/Ventoy.git
166 lines
4.1 KiB
C
166 lines
4.1 KiB
C
#ifndef MKSQUASHFS_H
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#define MKSQUASHFS_H
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/*
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* Squashfs
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*
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* Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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* 2012, 2013, 2014, 2019
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* Phillip Lougher <phillip@squashfs.org.uk>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2,
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* or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* mksquashfs.h
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*
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*/
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struct dir_info {
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char *pathname;
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char *subpath;
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unsigned int count;
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unsigned int directory_count;
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int depth;
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unsigned int excluded;
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char dir_is_ldir;
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struct dir_ent *dir_ent;
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struct dir_ent *list;
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DIR *linuxdir;
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};
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struct dir_ent {
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char *name;
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char *source_name;
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char *nonstandard_pathname;
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struct inode_info *inode;
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struct dir_info *dir;
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struct dir_info *our_dir;
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struct dir_ent *next;
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};
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struct inode_info {
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struct stat buf;
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struct inode_info *next;
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squashfs_inode inode;
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unsigned int inode_number;
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unsigned int nlink;
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int pseudo_id;
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char type;
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char read;
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char root_entry;
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char pseudo_file;
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char no_fragments;
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char always_use_fragments;
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char noD;
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char noF;
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char symlink[0];
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};
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/* in memory file info */
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struct file_info {
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long long file_size;
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long long bytes;
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long long start;
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unsigned int *block_list;
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struct file_info *next;
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struct fragment *fragment;
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unsigned short checksum;
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unsigned short fragment_checksum;
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char have_frag_checksum;
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char have_checksum;
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};
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/* fragment block data structures */
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struct fragment {
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unsigned int index;
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int offset;
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int size;
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};
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/* in memory uid tables */
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#define ID_ENTRIES 256
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#define ID_HASH(id) (id & (ID_ENTRIES - 1))
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#define ISA_UID 1
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#define ISA_GID 2
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struct id {
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unsigned int id;
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int index;
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char flags;
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struct id *next;
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};
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/* fragment to file mapping used when appending */
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struct append_file {
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struct file_info *file;
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struct append_file *next;
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};
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#define PSEUDO_FILE_OTHER 1
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#define PSEUDO_FILE_PROCESS 2
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#define IS_PSEUDO(a) ((a)->pseudo_file)
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#define IS_PSEUDO_PROCESS(a) ((a)->pseudo_file & PSEUDO_FILE_PROCESS)
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#define IS_PSEUDO_OTHER(a) ((a)->pseudo_file & PSEUDO_FILE_OTHER)
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/*
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* Amount of physical memory to use by default, and the default queue
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* ratios
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*/
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#define SQUASHFS_TAKE 4
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#define SQUASHFS_READQ_MEM 4
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#define SQUASHFS_BWRITEQ_MEM 4
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#define SQUASHFS_FWRITEQ_MEM 4
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/*
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* Lowest amount of physical memory considered viable for Mksquashfs
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* to run in Mbytes
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*/
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#define SQUASHFS_LOWMEM 64
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/* offset of data in compressed metadata blocks (allowing room for
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* compressed size */
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#define BLOCK_OFFSET 2
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#ifdef REPRODUCIBLE_DEFAULT
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#define NOREP_STR
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#define REP_STR " (default)"
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#define REP_DEF 1
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#else
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#define NOREP_STR " (default)"
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#define REP_STR
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#define REP_DEF 0
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#endif
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extern struct cache *reader_buffer, *fragment_buffer, *reserve_cache;
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struct cache *bwriter_buffer, *fwriter_buffer;
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extern struct queue *to_reader, *to_deflate, *to_writer, *from_writer,
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*to_frag, *locked_fragment, *to_process_frag;
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extern struct append_file **file_mapping;
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extern struct seq_queue *to_main, *to_order;
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extern pthread_mutex_t fragment_mutex, dup_mutex;
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extern struct squashfs_fragment_entry *fragment_table;
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extern struct compressor *comp;
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extern int block_size;
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extern struct file_info *dupl[];
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extern int read_fs_bytes(int, long long, int, void *);
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extern void add_file(long long, long long, long long, unsigned int *, int,
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unsigned int, int, int);
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extern struct id *create_id(unsigned int);
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extern unsigned int get_uid(unsigned int);
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extern unsigned int get_guid(unsigned int);
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extern int read_bytes(int, void *, int);
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extern unsigned short get_checksum_mem(char *, int);
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extern int reproducible;
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#endif
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