280 lines
9.3 KiB
C
280 lines
9.3 KiB
C
/*
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* Copyright (c) 2007 Vreixo Formoso
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*
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* This file is part of the libisofs project; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation. See COPYING file for details.
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*/
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#ifndef LIBISO_ECMA119_H_
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#define LIBISO_ECMA119_H_
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#include "libisofs.h"
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#include "util.h"
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#include "buffer.h"
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#include <stdint.h>
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#include <pthread.h>
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#define BLOCK_SIZE 2048
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typedef struct ecma119_image Ecma119Image;
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typedef struct ecma119_node Ecma119Node;
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typedef struct joliet_node JolietNode;
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typedef struct Iso_File_Src IsoFileSrc;
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typedef struct Iso_Image_Writer IsoImageWriter;
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struct ecma119_image
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{
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IsoImage *image;
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Ecma119Node *root;
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unsigned int iso_level :2;
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/* extensions */
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unsigned int rockridge :1;
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unsigned int joliet :1;
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unsigned int eltorito :1;
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/* relaxed constraints */
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unsigned int omit_version_numbers :1;
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unsigned int allow_deep_paths :1;
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unsigned int allow_longer_paths :1;
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unsigned int max_37_char_filenames :1;
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unsigned int no_force_dots :1;
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unsigned int allow_lowercase :1;
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unsigned int allow_full_ascii :1;
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/** Allow paths on Joliet tree to be larger than 240 bytes */
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unsigned int joliet_longer_paths :1;
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/*
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* Mode replace. If one of these flags is set, the correspodent values are
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* replaced with values below.
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*/
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unsigned int replace_uid :1;
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unsigned int replace_gid :1;
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unsigned int replace_file_mode :1;
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unsigned int replace_dir_mode :1;
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uid_t uid;
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gid_t gid;
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mode_t file_mode;
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mode_t dir_mode;
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/**
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* if sort files or not. Sorting is based of the weight of each file
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*/
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int sort_files;
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/**
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* In the CD, each file must have an unique inode number. So each
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* time we add a new file, this is incremented.
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*/
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ino_t ino;
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char *input_charset;
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char *output_charset;
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unsigned int appendable : 1;
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uint32_t ms_block; /**< start block for a ms image */
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time_t now; /**< Time at which writing began. */
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/** Total size of the output. This only includes the current volume. */
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off_t total_size;
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uint32_t vol_space_size;
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/* Bytes already written, just for progress notification */
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off_t bytes_written;
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int percent_written;
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/*
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* Block being processed, either during image writing or structure
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* size calculation.
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*/
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uint32_t curblock;
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/*
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* number of dirs in ECMA-119 tree, computed together with dir position,
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* and needed for path table computation in a efficient way
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*/
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size_t ndirs;
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uint32_t path_table_size;
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uint32_t l_path_table_pos;
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uint32_t m_path_table_pos;
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/*
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* Joliet related information
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*/
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JolietNode *joliet_root;
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size_t joliet_ndirs;
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uint32_t joliet_path_table_size;
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uint32_t joliet_l_path_table_pos;
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uint32_t joliet_m_path_table_pos;
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/*
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* El-Torito related information
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*/
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struct el_torito_boot_catalog *catalog;
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IsoFileSrc *cat; /**< location of the boot catalog in the new image */
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IsoFileSrc *bootimg; /**< location of the boot image in the new image */
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/*
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* Number of pad blocks that we need to write. Padding blocks are blocks
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* filled by 0s that we put between the directory structures and the file
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* data. These padding blocks are added by libisofs to improve the handling
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* of image growing. The idea is that the first blocks in the image are
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* overwritten with the volume descriptors of the new image. These first
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* blocks usually correspond to the volume descriptors and directory
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* structure of the old image, and can be safety overwritten. However,
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* with very small images they might correspond to valid data. To ensure
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* this never happens, what we do is to add padding bytes, to ensure no
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* file data is written in the first 64 KiB, that are the bytes we usually
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* overwrite.
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*/
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uint32_t pad_blocks;
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size_t nwriters;
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IsoImageWriter **writers;
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/* tree of files sources */
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IsoRBTree *files;
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/* Buffer for communication between burn_source and writer thread */
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IsoRingBuffer *buffer;
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/* writer thread descriptor */
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pthread_t wthread;
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pthread_attr_t th_attr;
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};
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#define BP(a,b) [(b) - (a) + 1]
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/* ECMA-119, 8.4 */
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struct ecma119_pri_vol_desc
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{
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uint8_t vol_desc_type BP(1, 1);
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uint8_t std_identifier BP(2, 6);
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uint8_t vol_desc_version BP(7, 7);
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uint8_t unused1 BP(8, 8);
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uint8_t system_id BP(9, 40);
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uint8_t volume_id BP(41, 72);
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uint8_t unused2 BP(73, 80);
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uint8_t vol_space_size BP(81, 88);
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uint8_t unused3 BP(89, 120);
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uint8_t vol_set_size BP(121, 124);
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uint8_t vol_seq_number BP(125, 128);
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uint8_t block_size BP(129, 132);
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uint8_t path_table_size BP(133, 140);
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uint8_t l_path_table_pos BP(141, 144);
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uint8_t opt_l_path_table_pos BP(145, 148);
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uint8_t m_path_table_pos BP(149, 152);
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uint8_t opt_m_path_table_pos BP(153, 156);
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uint8_t root_dir_record BP(157, 190);
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uint8_t vol_set_id BP(191, 318);
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uint8_t publisher_id BP(319, 446);
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uint8_t data_prep_id BP(447, 574);
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uint8_t application_id BP(575, 702);
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uint8_t copyright_file_id BP(703, 739);
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uint8_t abstract_file_id BP(740, 776);
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uint8_t bibliographic_file_id BP(777, 813);
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uint8_t vol_creation_time BP(814, 830);
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uint8_t vol_modification_time BP(831, 847);
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uint8_t vol_expiration_time BP(848, 864);
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uint8_t vol_effective_time BP(865, 881);
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uint8_t file_structure_version BP(882, 882);
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uint8_t reserved1 BP(883, 883);
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uint8_t app_use BP(884, 1395);
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uint8_t reserved2 BP(1396, 2048);
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};
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/* ECMA-119, 8.5 */
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struct ecma119_sup_vol_desc
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{
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uint8_t vol_desc_type BP(1, 1);
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uint8_t std_identifier BP(2, 6);
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uint8_t vol_desc_version BP(7, 7);
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uint8_t vol_flags BP(8, 8);
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uint8_t system_id BP(9, 40);
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uint8_t volume_id BP(41, 72);
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uint8_t unused2 BP(73, 80);
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uint8_t vol_space_size BP(81, 88);
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uint8_t esc_sequences BP(89, 120);
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uint8_t vol_set_size BP(121, 124);
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uint8_t vol_seq_number BP(125, 128);
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uint8_t block_size BP(129, 132);
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uint8_t path_table_size BP(133, 140);
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uint8_t l_path_table_pos BP(141, 144);
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uint8_t opt_l_path_table_pos BP(145, 148);
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uint8_t m_path_table_pos BP(149, 152);
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uint8_t opt_m_path_table_pos BP(153, 156);
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uint8_t root_dir_record BP(157, 190);
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uint8_t vol_set_id BP(191, 318);
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uint8_t publisher_id BP(319, 446);
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uint8_t data_prep_id BP(447, 574);
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uint8_t application_id BP(575, 702);
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uint8_t copyright_file_id BP(703, 739);
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uint8_t abstract_file_id BP(740, 776);
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uint8_t bibliographic_file_id BP(777, 813);
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uint8_t vol_creation_time BP(814, 830);
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uint8_t vol_modification_time BP(831, 847);
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uint8_t vol_expiration_time BP(848, 864);
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uint8_t vol_effective_time BP(865, 881);
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uint8_t file_structure_version BP(882, 882);
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uint8_t reserved1 BP(883, 883);
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uint8_t app_use BP(884, 1395);
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uint8_t reserved2 BP(1396, 2048);
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};
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/* ECMA-119, 8.2 */
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struct ecma119_boot_rec_vol_desc
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{
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uint8_t vol_desc_type BP(1, 1);
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uint8_t std_identifier BP(2, 6);
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uint8_t vol_desc_version BP(7, 7);
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uint8_t boot_sys_id BP(8, 39);
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uint8_t boot_id BP(40, 71);
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uint8_t boot_catalog BP(72, 75);
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uint8_t unused BP(76, 2048);
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};
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/* ECMA-119, 9.1 */
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struct ecma119_dir_record
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{
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uint8_t len_dr BP(1, 1);
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uint8_t len_xa BP(2, 2);
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uint8_t block BP(3, 10);
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uint8_t length BP(11, 18);
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uint8_t recording_time BP(19, 25);
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uint8_t flags BP(26, 26);
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uint8_t file_unit_size BP(27, 27);
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uint8_t interleave_gap_size BP(28, 28);
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uint8_t vol_seq_number BP(29, 32);
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uint8_t len_fi BP(33, 33);
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uint8_t file_id BP(34, 34); /* 34 to 33+len_fi */
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/* padding field (if len_fi is even) */
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/* system use (len_dr - len_su + 1 to len_dr) */
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};
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/* ECMA-119, 9.4 */
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struct ecma119_path_table_record
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{
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uint8_t len_di BP(1, 1);
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uint8_t len_xa BP(2, 2);
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uint8_t block BP(3, 6);
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uint8_t parent BP(7, 8);
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uint8_t dir_id BP(9, 9); /* 9 to 8+len_di */
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/* padding field (if len_di is odd) */
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};
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/* ECMA-119, 8.3 */
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struct ecma119_vol_desc_terminator
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{
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uint8_t vol_desc_type BP(1, 1);
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uint8_t std_identifier BP(2, 6);
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uint8_t vol_desc_version BP(7, 7);
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uint8_t reserved BP(8, 2048);
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};
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#endif /*LIBISO_ECMA119_H_*/
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