创建和提取Squashfs文件系统的工具___下载.zip

/* * Create a squashfs filesystem. This is a highly compressed read only * filesystem. * * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, * 2012, 2013, 2014, 2017, 2019, 2021, 2022, 2023 * Phillip Lougher <[email protected]> * * 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.c */ #define FALSE 0 #define TRUE 1 #define MAX_LINE 16384 #include <pwd.h> #include <grp.h> #include <time.h> #include <unistd.h> #include <stdio.h> #include <stddef.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <errno.h> #include <dirent.h> #include <string.h> #include <stdlib.h> #include <signal.h> #include <sys/types.h> #include <sys/mman.h> #include <pthread.h> #include <regex.h> #include <sys/wait.h> #include <limits.h> #include <ctype.h> #ifdef __linux__ #include <sys/sysinfo.h> #include <sys/sysmacros.h> #include <sched.h> #else #include <sys/sysctl.h> #endif #include "squashfs_fs.h" #include "squashfs_swap.h" #include "mksquashfs.h" #include "sort.h" #include "pseudo.h" #include "compressor.h" #include "xattr.h" #include "action.h" #include "mksquashfs_error.h" #include "progressbar.h" #include "info.h" #include "caches-queues-lists.h" #include "read_fs.h" #include "restore.h" #include "process_fragments.h" #include "fnmatch_compat.h" #include "tar.h" #include "merge_sort.h" /* Compression options */ int noF = FALSE; int noI = FALSE; int noId = FALSE; int noD = FALSE; int noX = FALSE; /* block size used to build filesystem */ int block_size = SQUASHFS_FILE_SIZE; int block_log; /* Fragment options, are fragments in filesystem and are they used for tailends? */ int no_fragments = FALSE; int always_use_fragments = FALSE; /* Are duplicates detected in fileystem ? */ int duplicate_checking = TRUE; /* Are filesystems exportable via NFS? */ int exportable = TRUE; /* Are sparse files detected and stored? */ int sparse_files = TRUE; /* Options which override root inode settings */ int root_mode_opt = FALSE; mode_t root_mode; int root_uid_opt = FALSE; unsigned int root_uid; int root_gid_opt = FALSE; unsigned int root_gid; unsigned int root_time; int root_time_opt = FALSE; /* Values that override uids and gids for all files and directories */ int global_uid_opt = FALSE; unsigned int global_uid; int global_gid_opt = FALSE; unsigned int global_gid; /* Do pseudo uids and guids override -all-root, -force-uid and -force-gid? */ int pseudo_override = FALSE; /* Time value over-ride options */ unsigned int mkfs_time; int mkfs_time_opt = FALSE; unsigned int all_time; int all_time_opt = FALSE; int clamping = TRUE; /* Is max depth option in effect, and max depth to descend into directories */ int max_depth_opt = FALSE; unsigned int max_depth; /* how should Mksquashfs treat the source files? */ int tarstyle = FALSE; int keep_as_directory = FALSE; /* should Mksquashfs read files from stdin, like cpio? */ int cpiostyle = FALSE; char filename_terminator = '\n'; /* Should Mksquashfs detect hardlinked files? */ int no_hardlinks = FALSE; /* Should Mksquashfs cross filesystem boundaries? */ int one_file_system = FALSE; int one_file_system_x = FALSE; dev_t *source_dev; dev_t cur_dev; /* Is Mksquashfs processing a tarfile? */ int tarfile = FALSE; /* Is Mksquashfs reading a pseudo file from stdin? */ int pseudo_stdin = FALSE; /* Is Mksquashfs storing Xattrs, or excluding/including xattrs using regexs? */ int no_xattrs = XATTR_DEF; unsigned int xattr_bytes = 0, total_xattr_bytes = 0; regex_t *xattr_exclude_preg = NULL; regex_t *xattr_include_preg = NULL; /* Does Mksquashfs print a summary and other information when running? */ int quiet = FALSE; /* Does Mksquashfs display filenames as they are archived? */ int silent = TRUE; /* Is Mksquashfs using the older non-wildcard exclude code? */ int old_exclude = TRUE; /* Is Mksquashfs using regexs in exclude file matching (default wildcards)? */ int use_regex = FALSE; /* Will Mksquashfs pad the filesystem to a multiple of 4 Kbytes? */ int nopad = FALSE; /* Should Mksquashfs treat normally ignored errors as fatal? */ int exit_on_error = FALSE; /* Is filesystem stored at an offset from the start of the block device/file? */ long long start_offset = 0; /* File count statistics used to print summary and fill in superblock */ unsigned int file_count = 0, sym_count = 0, dev_count = 0, dir_count = 0, fifo_count = 0, sock_count = 0, id_count = 0; long long hardlnk_count = 0; /* superblock attributes */ struct squashfs_super_block sBlk; /* write position within data section */ long long bytes = 0, total_bytes = 0; /* in memory directory table - possibly compressed */ char *directory_table = NULL; long long directory_bytes = 0, directory_size = 0, total_directory_bytes = 0; /* cached directory table */ char *directory_data_cache = NULL; unsigned int directory_cache_bytes = 0, directory_cache_size = 0; /* in memory inode table - possibly compressed */ char *inode_table = NULL; long long inode_bytes = 0, inode_size = 0, total_inode_bytes = 0; /* cached inode table */ char *data_cache = NULL; unsigned int cache_bytes = 0, cache_size = 0, inode_count = 0; /* inode lookup table */ squashfs_inode *inode_lookup_table = NULL; struct inode_info *inode_info[INODE_HASH_SIZE]; /* hash tables used to do fast duplicate searches in duplicate check */ struct file_info **dupl_frag; struct file_info **dupl_block; unsigned int dup_files = 0; int exclude = 0; struct exclude_info *exclude_paths = NULL; struct path_entry { char *name; regex_t *preg; struct pathname *paths; }; struct pathnames *paths = NULL; struct pathname *path = NULL; struct pathname *stickypath = NULL; unsigned int fragments = 0; struct squashfs_fragment_entry *fragment_table = NULL; int fragments_outstanding = 0; int fragments_locked = FALSE; /* current inode number for directories and non directories */ unsigned int inode_no = 1; unsigned int root_inode_number = 0; /* list of source dirs/files */ int source = 0; char **source_path; int option_offset; /* flag whether destination file is a block device */ int block_device = FALSE; /* flag indicating whether files are sorted using sort list(s) */ int sorted = FALSE; /* save destination file name for deleting on error */ char *destination_file = NULL; struct id *id_hash_table[ID_ENTRIES]; struct id *id_table[SQUASHFS_IDS], *sid_table[SQUASHFS_IDS]; unsigned int uid_count = 0, guid_count = 0; unsigned int sid_count = 0, suid_count = 0, sguid_count = 0; /* caches used to store buffers being worked on, and queues * used to send buffers between threads */ struct cache *reader_buffer, *fragment_buffer, *reserve_cache; struct cache *bwriter_buffer, *fwriter_buffer; struct queue *to_reader, *to_deflate, *to_writer, *from_writer, *to_frag, *locked_fragment, *to_process_frag; struct seq_queue *to_main; /* pthread threads and mutexes */ pthread_t reader_thread, writer_thread, main_thread; pthread_t *deflator_thread, *frag_deflator_thread, *frag_thread; pthread_t *restore_thread = NULL; pthread_mutex_t fragment_mutex = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_t pos_mutex = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_t dup_mutex = PTHREAD_MUTEX_INITIALIZER; /* reproducible image queues and threads */ struct seq_queue *to_order; pthread_t order_thread; pthread_cond_t fragment_waiting = PTHREAD_COND_INITIALIZER; int