:py:mod:`dissect.squashfs.c_squashfs` ===================================== .. py:module:: dissect.squashfs.c_squashfs Module Contents --------------- .. py:data:: squashfs_def :value: Multiline-String .. raw:: html

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.. code-block:: python """ #define SQUASHFS_MAGIC 0x73717368 /* size of metadata (inode and directory) blocks */ #define SQUASHFS_METADATA_SIZE 8192 #define SQUASHFS_INVALID 0xffffffffffff #define SQUASHFS_INVALID_FRAG 0xffffffff #define SQUASHFS_INVALID_XATTR 0xffffffff #define SQUASHFS_INVALID_BLK -1 #define SQUASHFS_USED_BLK -2 /* Filesystem flags */ #define SQUASHFS_NOI 0 #define SQUASHFS_NOD 1 #define SQUASHFS_CHECK 2 #define SQUASHFS_NOF 3 #define SQUASHFS_NO_FRAG 4 #define SQUASHFS_ALWAYS_FRAG 5 #define SQUASHFS_DUPLICATE 6 #define SQUASHFS_EXPORT 7 #define SQUASHFS_NOX 8 #define SQUASHFS_NO_XATTR 9 #define SQUASHFS_COMP_OPT 10 #define SQUASHFS_NOID 11 /* Max number of types and file types */ #define SQUASHFS_DIR_TYPE 1 #define SQUASHFS_FILE_TYPE 2 #define SQUASHFS_SYMLINK_TYPE 3 #define SQUASHFS_BLKDEV_TYPE 4 #define SQUASHFS_CHRDEV_TYPE 5 #define SQUASHFS_FIFO_TYPE 6 #define SQUASHFS_SOCKET_TYPE 7 #define SQUASHFS_LDIR_TYPE 8 #define SQUASHFS_LREG_TYPE 9 #define SQUASHFS_LSYMLINK_TYPE 10 #define SQUASHFS_LBLKDEV_TYPE 11 #define SQUASHFS_LCHRDEV_TYPE 12 #define SQUASHFS_LFIFO_TYPE 13 #define SQUASHFS_LSOCKET_TYPE 14 /* Xattr types */ #define SQUASHFS_XATTR_USER 0 #define SQUASHFS_XATTR_TRUSTED 1 #define SQUASHFS_XATTR_SECURITY 2 #define SQUASHFS_XATTR_VALUE_OOL 256 #define SQUASHFS_XATTR_PREFIX_MASK 0xff /* Flag whether block is compressed or uncompressed, bit is set if block is uncompressed */ #define SQUASHFS_COMPRESSED_BIT (1 << 15) #define SQUASHFS_COMPRESSED_BIT_BLOCK (1 << 24) typedef long long squashfs_block; typedef long long squashfs_inode; #define ZLIB_COMPRESSION 1 #define LZMA_COMPRESSION 2 #define LZO_COMPRESSION 3 #define XZ_COMPRESSION 4 #define LZ4_COMPRESSION 5 #define ZSTD_COMPRESSION 6 struct squashfs_super_block { unsigned int s_magic; unsigned int inodes; unsigned int mkfs_time; unsigned int block_size; unsigned int fragments; unsigned short compression; unsigned short block_log; unsigned short flags; unsigned short no_ids; unsigned short s_major; unsigned short s_minor; squashfs_inode root_inode; long long bytes_used; long long id_table_start; long long xattr_id_table_start; long long inode_table_start; long long directory_table_start; long long fragment_table_start; long long lookup_table_start; }; struct squashfs_super_block_3 { unsigned int s_magic; unsigned int inodes; unsigned int bytes_used_2; unsigned int uid_start_2; unsigned int guid_start_2; unsigned int inode_table_start_2; unsigned int directory_table_start_2; unsigned int s_major : 16; unsigned int s_minor : 16; unsigned int block_size_1 : 16; unsigned int block_log : 16; unsigned int flags : 8; unsigned int no_uids : 8; unsigned int no_guids : 8; int mkfs_time; squashfs_inode root_inode; unsigned int block_size; unsigned int fragments; unsigned int fragment_table_start_2; long long bytes_used; long long uid_start; long long guid_start; long long inode_table_start; long long directory_table_start; long long fragment_table_start; long long lookup_table_start; }; struct squashfs_dir_index { unsigned int index; unsigned int start_block; unsigned int size; unsigned char name[0]; }; struct squashfs_base_inode_header { unsigned short inode_type; unsigned short mode; unsigned short uid; unsigned short guid; unsigned int mtime; unsigned int inode_number; }; struct squashfs_ipc_inode_header { unsigned short inode_type; unsigned short mode; unsigned short uid; unsigned short guid; unsigned int mtime; unsigned int inode_number; unsigned int nlink; }; struct squashfs_lipc_inode_header { unsigned short inode_type; unsigned short mode; unsigned short uid; unsigned short guid; unsigned int mtime; unsigned int inode_number; unsigned int nlink; unsigned int xattr; }; struct squashfs_dev_inode_header { unsigned short inode_type; unsigned short mode; unsigned short uid; unsigned short guid; unsigned int mtime; unsigned int inode_number; unsigned int nlink; unsigned int rdev; }; struct squashfs_ldev_inode_header { unsigned short inode_type; unsigned short mode; unsigned short uid; unsigned short guid; unsigned int mtime; unsigned int inode_number; unsigned int nlink; unsigned int rdev; unsigned int xattr; }; struct squashfs_symlink_inode_header { unsigned short inode_type; unsigned short mode; unsigned short uid; unsigned short guid; unsigned int mtime; unsigned int inode_number; unsigned int nlink; unsigned int symlink_size; char symlink[0]; }; struct squashfs_reg_inode_header { unsigned short inode_type; unsigned short mode; unsigned short uid; unsigned short guid; unsigned int mtime; unsigned int inode_number; unsigned int start_block; unsigned int fragment; unsigned int offset; unsigned int file_size; unsigned int block_list[0]; }; struct squashfs_lreg_inode_header { unsigned short inode_type; unsigned short mode; unsigned short uid; unsigned short guid; unsigned int mtime; unsigned int inode_number; squashfs_block start_block; long long file_size; long long sparse; unsigned int nlink; unsigned int fragment; unsigned int offset; unsigned int xattr; unsigned int block_list[0]; }; struct squashfs_dir_inode_header { unsigned short inode_type; unsigned short mode; unsigned short uid; unsigned short guid; unsigned int mtime; unsigned int inode_number; unsigned int start_block; unsigned int nlink; unsigned short file_size; unsigned short offset; unsigned int parent_inode; }; struct squashfs_ldir_inode_header { unsigned short inode_type; unsigned short mode; unsigned short uid; unsigned short guid; unsigned int mtime; unsigned int inode_number; unsigned int nlink; unsigned int file_size; unsigned int start_block; unsigned int parent_inode; unsigned short i_count; unsigned short offset; unsigned int xattr; struct squashfs_dir_index index[0]; }; struct squashfs_dir_entry { unsigned short offset; short inode_number; unsigned short type; unsigned short size; char name[0]; }; struct squashfs_dir_header { unsigned int count; unsigned int start_block; unsigned int inode_number; }; struct squashfs_fragment_entry { long long start_block; unsigned int size; unsigned int unused; }; struct squashfs_xattr_entry { unsigned short type; unsigned short size; }; struct squashfs_xattr_val { unsigned int vsize; }; struct squashfs_xattr_id { long long xattr; unsigned int count; unsigned int size; }; struct squashfs_xattr_table { long long xattr_table_start; unsigned int xattr_ids; unsigned int unused; }; // Compression options struct gzip_comp_opts { int compression_level; short window_size; short strategy; }; struct lzo_comp_opts { int algorithm; int compression_level; }; struct xz_comp_opts { int dictionary_size; int flags; }; struct lz4_comp_opts { int version; int flags; }; struct zstd_comp_opts { int compression_level; }; """ .. raw:: html

.. py:data:: c_squashfs .. py:data:: INODE_STRUCT_MAP .. py:data:: TYPE_MAP