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Diffstat (limited to 'squashfs-tools/mksquashfs.h')
| -rw-r--r-- | squashfs-tools/mksquashfs.h | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/squashfs-tools/mksquashfs.h b/squashfs-tools/mksquashfs.h new file mode 100644 index 0000000..10d31ff --- /dev/null +++ b/squashfs-tools/mksquashfs.h @@ -0,0 +1,285 @@ +#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 |