477 lines
17 KiB
C
477 lines
17 KiB
C
/*
|
|
* Copyright (c) 2007 Vreixo Formoso
|
|
*
|
|
* This file is part of the libisofs project; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation. See COPYING file for details.
|
|
*/
|
|
|
|
#ifndef LIBISO_ECMA119_H_
|
|
#define LIBISO_ECMA119_H_
|
|
|
|
#include "libisofs.h"
|
|
#include "util.h"
|
|
#include "buffer.h"
|
|
|
|
#include <stdint.h>
|
|
#include <pthread.h>
|
|
|
|
#define BLOCK_SIZE 2048
|
|
|
|
/**
|
|
* Holds the options for the image generation.
|
|
*/
|
|
struct iso_write_opts {
|
|
|
|
int level; /**< ISO level to write at. (ECMA-119, 10) */
|
|
|
|
/** Which extensions to support. */
|
|
unsigned int rockridge :1;
|
|
unsigned int joliet :1;
|
|
unsigned int iso1999 :1;
|
|
|
|
/* allways write timestamps in GMT */
|
|
unsigned int always_gmt :1;
|
|
|
|
/*
|
|
* Relaxed constraints. Setting any of these to 1 break the specifications,
|
|
* but it is supposed to work on most moderns systems. Use with caution.
|
|
*/
|
|
|
|
/**
|
|
* Omit the version number (";1") at the end of the ISO-9660 identifiers.
|
|
* Version numbers are usually not used.
|
|
*/
|
|
unsigned int omit_version_numbers :1;
|
|
|
|
/**
|
|
* Allow ISO-9660 directory hierarchy to be deeper than 8 levels.
|
|
*/
|
|
unsigned int allow_deep_paths :1;
|
|
|
|
/**
|
|
* Allow path in the ISO-9660 tree to have more than 255 characters.
|
|
*/
|
|
unsigned int allow_longer_paths :1;
|
|
|
|
/**
|
|
* Allow a single file or directory hierarchy to have up to 37 characters.
|
|
* This is larger than the 31 characters allowed by ISO level 2, and the
|
|
* extra space is taken from the version number, so this also forces
|
|
* omit_version_numbers.
|
|
*/
|
|
unsigned int max_37_char_filenames :1;
|
|
|
|
/**
|
|
* ISO-9660 forces filenames to have a ".", that separates file name from
|
|
* extension. libisofs adds it if original filename doesn't has one. Set
|
|
* this to 1 to prevent this behavior
|
|
*/
|
|
unsigned int no_force_dots :1;
|
|
|
|
/**
|
|
* Allow lowercase characters in ISO-9660 filenames. By default, only
|
|
* uppercase characters, numbers and a few other characters are allowed.
|
|
*/
|
|
unsigned int allow_lowercase :1;
|
|
|
|
/**
|
|
* Allow all ASCII characters to be appear on an ISO-9660 filename. Note
|
|
* that "/" and "\0" characters are never allowed, even in RR names.
|
|
*/
|
|
unsigned int allow_full_ascii :1;
|
|
|
|
/**
|
|
* Allow all characters to be part of Volume and Volset identifiers on
|
|
* the Primary Volume Descriptor. This breaks ISO-9660 contraints, but
|
|
* should work on modern systems.
|
|
*/
|
|
unsigned int relaxed_vol_atts :1;
|
|
|
|
/**
|
|
* Allow paths in the Joliet tree to have more than 240 characters.
|
|
*/
|
|
unsigned int joliet_longer_paths :1;
|
|
|
|
/** If files should be sorted based on their weight. */
|
|
unsigned int sort_files :1;
|
|
|
|
/**
|
|
* The following options set the default values for files and directory
|
|
* permissions, gid and uid. All these take one of three values: 0, 1 or 2.
|
|
* If 0, the corresponding attribute will be kept as setted in the IsoNode.
|
|
* Unless you have changed it, it corresponds to the value on disc, so it
|
|
* is suitable for backup purposes. If set to 1, the corresponding attrib.
|
|
* will be changed by a default suitable value. Finally, if you set it to
|
|
* 2, the attrib. will be changed with the value specified in the options
|
|
* below. Note that for mode attributes, only the permissions are set, the
|
|
* file type remains unchanged.
|
|
*/
|
|
unsigned int replace_dir_mode :2;
|
|
unsigned int replace_file_mode :2;
|
|
unsigned int replace_uid :2;
|
|
unsigned int replace_gid :2;
|
|
|
|
mode_t dir_mode; /** Mode to use on dirs when replace_dir_mode == 2. */
|
|
mode_t file_mode; /** Mode to use on files when replace_file_mode == 2. */
|
|
uid_t uid; /** uid to use when replace_uid == 2. */
|
|
gid_t gid; /** gid to use when replace_gid == 2. */
|
|
|
|
/**
|
|
* 0 to use IsoNode timestamps, 1 to use recording time, 2 to use
|
|
* values from timestamp field. This has only meaning if RR extensions
|
|
* are enabled.
|
|
*/
|
|
unsigned int replace_timestamps :2;
|
|
time_t timestamp;
|
|
|
|
/**
|
|
* Charset for the RR filenames that will be created.
|
|
* NULL to use default charset, the locale one.
|
|
*/
|
|
char *output_charset;
|
|
|
|
/**
|
|
* This flags control the type of the image to create. Libisofs support
|
|
* two kind of images: stand-alone and appendable.
|
|
*
|
|
* A stand-alone image is an image that is valid alone, and that can be
|
|
* mounted by its own. This is the kind of image you will want to create
|
|
* in most cases. A stand-alone image can be burned in an empty CD or DVD,
|
|
* or write to an .iso file for future burning or distribution.
|
|
*
|
|
* On the other side, an appendable image is not self contained, it refers
|
|
* to serveral files that are stored outside the image. Its usage is for
|
|
* multisession discs, where you add data in a new session, while the
|
|
* previous session data can still be accessed. In those cases, the old
|
|
* data is not written again. Instead, the new image refers to it, and thus
|
|
* it's only valid when appended to the original. Note that in those cases
|
|
* the image will be written after the original, and thus you will want
|
|
* to use a ms_block greater than 0.
|
|
*
|
|
* Note that if you haven't import a previous image (by means of
|
|
* iso_image_import()), the image will always be a stand-alone image, as
|
|
* there is no previous data to refer to.
|
|
*/
|
|
unsigned int appendable : 1;
|
|
|
|
/**
|
|
* Start block of the image. It is supposed to be the lba where the first
|
|
* block of the image will be written on disc. All references inside the
|
|
* ISO image will take this into account, thus providing a mountable image.
|
|
*
|
|
* For appendable images, that are written to a new session, you should
|
|
* pass here the lba of the next writable address on disc.
|
|
*
|
|
* In stand alone images this is usually 0. However, you may want to
|
|
* provide a different ms_block if you don't plan to burn the image in the
|
|
* first session on disc, such as in some CD-Extra disc whether the data
|
|
* image is written in a new session after some audio tracks.
|
|
*/
|
|
uint32_t ms_block;
|
|
|
|
/**
|
|
* When not NULL, it should point to a buffer of at least 64KiB, where
|
|
* libisofs will write the contents that should be written at the beginning
|
|
* of a overwriteable media, to grow the image. The growing of an image is
|
|
* a way, used by first time in growisofs by Andy Polyakov, to allow the
|
|
* appending of new data to non-multisession media, such as DVD+RW, in the
|
|
* same way you append a new session to a multisession disc, i.e., without
|
|
* need to write again the contents of the previous image.
|
|
*
|
|
* Note that if you want this kind of image growing, you will also need to
|
|
* set appendable to "1" and provide a valid ms_block after the previous
|
|
* image.
|
|
*
|
|
* You should initialize the buffer either with 0s, or with the contents of
|
|
* the first blocks of the image you're growing. In most cases, 0 is good
|
|
* enought.
|
|
*/
|
|
uint8_t *overwrite;
|
|
|
|
/**
|
|
* Size, in number of blocks, of the FIFO buffer used between the writer
|
|
* thread and the burn_source. You have to provide at least a 32 blocks
|
|
* buffer.
|
|
*/
|
|
size_t fifo_size;
|
|
};
|
|
|
|
typedef struct ecma119_image Ecma119Image;
|
|
typedef struct ecma119_node Ecma119Node;
|
|
typedef struct joliet_node JolietNode;
|
|
typedef struct iso1999_node Iso1999Node;
|
|
typedef struct Iso_File_Src IsoFileSrc;
|
|
typedef struct Iso_Image_Writer IsoImageWriter;
|
|
|
|
struct ecma119_image
|
|
{
|
|
IsoImage *image;
|
|
Ecma119Node *root;
|
|
|
|
unsigned int iso_level :2;
|
|
|
|
/* extensions */
|
|
unsigned int rockridge :1;
|
|
unsigned int joliet :1;
|
|
unsigned int eltorito :1;
|
|
unsigned int iso1999 :1;
|
|
|
|
/* allways write timestamps in GMT */
|
|
unsigned int always_gmt :1;
|
|
|
|
/* relaxed constraints */
|
|
unsigned int omit_version_numbers :1;
|
|
unsigned int allow_deep_paths :1;
|
|
unsigned int allow_longer_paths :1;
|
|
unsigned int max_37_char_filenames :1;
|
|
unsigned int no_force_dots :1;
|
|
unsigned int allow_lowercase :1;
|
|
unsigned int allow_full_ascii :1;
|
|
|
|
unsigned int relaxed_vol_atts : 1;
|
|
|
|
/** Allow paths on Joliet tree to be larger than 240 bytes */
|
|
unsigned int joliet_longer_paths :1;
|
|
|
|
/*
|
|
* Mode replace. If one of these flags is set, the correspodent values are
|
|
* replaced with values below.
|
|
*/
|
|
unsigned int replace_uid :1;
|
|
unsigned int replace_gid :1;
|
|
unsigned int replace_file_mode :1;
|
|
unsigned int replace_dir_mode :1;
|
|
unsigned int replace_timestamps :1;
|
|
|
|
uid_t uid;
|
|
gid_t gid;
|
|
mode_t file_mode;
|
|
mode_t dir_mode;
|
|
time_t timestamp;
|
|
|
|
/**
|
|
* if sort files or not. Sorting is based of the weight of each file
|
|
*/
|
|
int sort_files;
|
|
|
|
/**
|
|
* In the CD, each file must have an unique inode number. So each
|
|
* time we add a new file, this is incremented.
|
|
*/
|
|
ino_t ino;
|
|
|
|
char *input_charset;
|
|
char *output_charset;
|
|
|
|
unsigned int appendable : 1;
|
|
uint32_t ms_block; /**< start block for a ms image */
|
|
time_t now; /**< Time at which writing began. */
|
|
|
|
/** Total size of the output. This only includes the current volume. */
|
|
off_t total_size;
|
|
uint32_t vol_space_size;
|
|
|
|
/* Bytes already written, just for progress notification */
|
|
off_t bytes_written;
|
|
int percent_written;
|
|
|
|
/*
|
|
* Block being processed, either during image writing or structure
|
|
* size calculation.
|
|
*/
|
|
uint32_t curblock;
|
|
|
|
/*
|
|
* number of dirs in ECMA-119 tree, computed together with dir position,
|
|
* and needed for path table computation in a efficient way
|
|
*/
|
|
size_t ndirs;
|
|
uint32_t path_table_size;
|
|
uint32_t l_path_table_pos;
|
|
uint32_t m_path_table_pos;
|
|
|
|
/*
|
|
* Joliet related information
|
|
*/
|
|
JolietNode *joliet_root;
|
|
size_t joliet_ndirs;
|
|
uint32_t joliet_path_table_size;
|
|
uint32_t joliet_l_path_table_pos;
|
|
uint32_t joliet_m_path_table_pos;
|
|
|
|
/*
|
|
* ISO 9660:1999 related information
|
|
*/
|
|
Iso1999Node *iso1999_root;
|
|
size_t iso1999_ndirs;
|
|
uint32_t iso1999_path_table_size;
|
|
uint32_t iso1999_l_path_table_pos;
|
|
uint32_t iso1999_m_path_table_pos;
|
|
|
|
/*
|
|
* El-Torito related information
|
|
*/
|
|
struct el_torito_boot_catalog *catalog;
|
|
IsoFileSrc *cat; /**< location of the boot catalog in the new image */
|
|
IsoFileSrc *bootimg; /**< location of the boot image in the new image */
|
|
|
|
/*
|
|
* Number of pad blocks that we need to write. Padding blocks are blocks
|
|
* filled by 0s that we put between the directory structures and the file
|
|
* data. These padding blocks are added by libisofs to improve the handling
|
|
* of image growing. The idea is that the first blocks in the image are
|
|
* overwritten with the volume descriptors of the new image. These first
|
|
* blocks usually correspond to the volume descriptors and directory
|
|
* structure of the old image, and can be safety overwritten. However,
|
|
* with very small images they might correspond to valid data. To ensure
|
|
* this never happens, what we do is to add padding bytes, to ensure no
|
|
* file data is written in the first 64 KiB, that are the bytes we usually
|
|
* overwrite.
|
|
*/
|
|
uint32_t pad_blocks;
|
|
|
|
size_t nwriters;
|
|
IsoImageWriter **writers;
|
|
|
|
/* tree of files sources */
|
|
IsoRBTree *files;
|
|
|
|
/* Buffer for communication between burn_source and writer thread */
|
|
IsoRingBuffer *buffer;
|
|
|
|
/* writer thread descriptor */
|
|
pthread_t wthread;
|
|
pthread_attr_t th_attr;
|
|
};
|
|
|
|
#define BP(a,b) [(b) - (a) + 1]
|
|
|
|
/* ECMA-119, 8.4 */
|
|
struct ecma119_pri_vol_desc
|
|
{
|
|
uint8_t vol_desc_type BP(1, 1);
|
|
uint8_t std_identifier BP(2, 6);
|
|
uint8_t vol_desc_version BP(7, 7);
|
|
uint8_t unused1 BP(8, 8);
|
|
uint8_t system_id BP(9, 40);
|
|
uint8_t volume_id BP(41, 72);
|
|
uint8_t unused2 BP(73, 80);
|
|
uint8_t vol_space_size BP(81, 88);
|
|
uint8_t unused3 BP(89, 120);
|
|
uint8_t vol_set_size BP(121, 124);
|
|
uint8_t vol_seq_number BP(125, 128);
|
|
uint8_t block_size BP(129, 132);
|
|
uint8_t path_table_size BP(133, 140);
|
|
uint8_t l_path_table_pos BP(141, 144);
|
|
uint8_t opt_l_path_table_pos BP(145, 148);
|
|
uint8_t m_path_table_pos BP(149, 152);
|
|
uint8_t opt_m_path_table_pos BP(153, 156);
|
|
uint8_t root_dir_record BP(157, 190);
|
|
uint8_t vol_set_id BP(191, 318);
|
|
uint8_t publisher_id BP(319, 446);
|
|
uint8_t data_prep_id BP(447, 574);
|
|
uint8_t application_id BP(575, 702);
|
|
uint8_t copyright_file_id BP(703, 739);
|
|
uint8_t abstract_file_id BP(740, 776);
|
|
uint8_t bibliographic_file_id BP(777, 813);
|
|
uint8_t vol_creation_time BP(814, 830);
|
|
uint8_t vol_modification_time BP(831, 847);
|
|
uint8_t vol_expiration_time BP(848, 864);
|
|
uint8_t vol_effective_time BP(865, 881);
|
|
uint8_t file_structure_version BP(882, 882);
|
|
uint8_t reserved1 BP(883, 883);
|
|
uint8_t app_use BP(884, 1395);
|
|
uint8_t reserved2 BP(1396, 2048);
|
|
};
|
|
|
|
/* ECMA-119, 8.5 */
|
|
struct ecma119_sup_vol_desc
|
|
{
|
|
uint8_t vol_desc_type BP(1, 1);
|
|
uint8_t std_identifier BP(2, 6);
|
|
uint8_t vol_desc_version BP(7, 7);
|
|
uint8_t vol_flags BP(8, 8);
|
|
uint8_t system_id BP(9, 40);
|
|
uint8_t volume_id BP(41, 72);
|
|
uint8_t unused2 BP(73, 80);
|
|
uint8_t vol_space_size BP(81, 88);
|
|
uint8_t esc_sequences BP(89, 120);
|
|
uint8_t vol_set_size BP(121, 124);
|
|
uint8_t vol_seq_number BP(125, 128);
|
|
uint8_t block_size BP(129, 132);
|
|
uint8_t path_table_size BP(133, 140);
|
|
uint8_t l_path_table_pos BP(141, 144);
|
|
uint8_t opt_l_path_table_pos BP(145, 148);
|
|
uint8_t m_path_table_pos BP(149, 152);
|
|
uint8_t opt_m_path_table_pos BP(153, 156);
|
|
uint8_t root_dir_record BP(157, 190);
|
|
uint8_t vol_set_id BP(191, 318);
|
|
uint8_t publisher_id BP(319, 446);
|
|
uint8_t data_prep_id BP(447, 574);
|
|
uint8_t application_id BP(575, 702);
|
|
uint8_t copyright_file_id BP(703, 739);
|
|
uint8_t abstract_file_id BP(740, 776);
|
|
uint8_t bibliographic_file_id BP(777, 813);
|
|
uint8_t vol_creation_time BP(814, 830);
|
|
uint8_t vol_modification_time BP(831, 847);
|
|
uint8_t vol_expiration_time BP(848, 864);
|
|
uint8_t vol_effective_time BP(865, 881);
|
|
uint8_t file_structure_version BP(882, 882);
|
|
uint8_t reserved1 BP(883, 883);
|
|
uint8_t app_use BP(884, 1395);
|
|
uint8_t reserved2 BP(1396, 2048);
|
|
};
|
|
|
|
/* ECMA-119, 8.2 */
|
|
struct ecma119_boot_rec_vol_desc
|
|
{
|
|
uint8_t vol_desc_type BP(1, 1);
|
|
uint8_t std_identifier BP(2, 6);
|
|
uint8_t vol_desc_version BP(7, 7);
|
|
uint8_t boot_sys_id BP(8, 39);
|
|
uint8_t boot_id BP(40, 71);
|
|
uint8_t boot_catalog BP(72, 75);
|
|
uint8_t unused BP(76, 2048);
|
|
};
|
|
|
|
/* ECMA-119, 9.1 */
|
|
struct ecma119_dir_record
|
|
{
|
|
uint8_t len_dr BP(1, 1);
|
|
uint8_t len_xa BP(2, 2);
|
|
uint8_t block BP(3, 10);
|
|
uint8_t length BP(11, 18);
|
|
uint8_t recording_time BP(19, 25);
|
|
uint8_t flags BP(26, 26);
|
|
uint8_t file_unit_size BP(27, 27);
|
|
uint8_t interleave_gap_size BP(28, 28);
|
|
uint8_t vol_seq_number BP(29, 32);
|
|
uint8_t len_fi BP(33, 33);
|
|
uint8_t file_id BP(34, 34); /* 34 to 33+len_fi */
|
|
/* padding field (if len_fi is even) */
|
|
/* system use (len_dr - len_su + 1 to len_dr) */
|
|
};
|
|
|
|
/* ECMA-119, 9.4 */
|
|
struct ecma119_path_table_record
|
|
{
|
|
uint8_t len_di BP(1, 1);
|
|
uint8_t len_xa BP(2, 2);
|
|
uint8_t block BP(3, 6);
|
|
uint8_t parent BP(7, 8);
|
|
uint8_t dir_id BP(9, 9); /* 9 to 8+len_di */
|
|
/* padding field (if len_di is odd) */
|
|
};
|
|
|
|
/* ECMA-119, 8.3 */
|
|
struct ecma119_vol_desc_terminator
|
|
{
|
|
uint8_t vol_desc_type BP(1, 1);
|
|
uint8_t std_identifier BP(2, 6);
|
|
uint8_t vol_desc_version BP(7, 7);
|
|
uint8_t reserved BP(8, 2048);
|
|
};
|
|
|
|
#endif /*LIBISO_ECMA119_H_*/
|