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279 lines
9.3 KiB
279 lines
9.3 KiB
/* |
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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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