560 lines
20 KiB
C
560 lines
20 KiB
C
|
|
/*
|
|
Class struct of libisoburn.
|
|
|
|
Copyright 2007 Vreixo Formoso Lopes <metalpain2002@yahoo.es>
|
|
and Thomas Schmitt <scdbackup@gmx.net>
|
|
*/
|
|
|
|
#ifndef Isoburn_includeD
|
|
#define Isoburn_includeD
|
|
|
|
|
|
/* for uint8_t */
|
|
#include <stdint.h>
|
|
|
|
/* For emulated TOC of overwriteable media.
|
|
Provides minimal info for faking a struct burn_toc_entry.
|
|
*/
|
|
struct isoburn_toc_entry {
|
|
int session;
|
|
int track_no; /* point */
|
|
int start_lba;
|
|
int track_blocks;
|
|
|
|
char *volid; /* For caching a volume id from emulated toc on overwriteables */
|
|
|
|
struct isoburn_toc_entry *next;
|
|
};
|
|
|
|
int isoburn_toc_entry_new(struct isoburn_toc_entry **objpt,
|
|
struct isoburn_toc_entry *boss, int flag);
|
|
|
|
/* @param flag bit0= delete all subordinates too
|
|
*/
|
|
int isoburn_toc_entry_destroy(struct isoburn_toc_entry **o, int flag);
|
|
|
|
|
|
/* Size of target_iso_head which is to be written during
|
|
isoburn_activate_session()
|
|
*/
|
|
#define Libisoburn_target_head_sizE (32*2048)
|
|
|
|
struct isoburn {
|
|
|
|
|
|
/* The libburn drive to which this isoburn object is related
|
|
Most isoburn calls will use a burn_drive as object handle */
|
|
struct burn_drive *drive;
|
|
|
|
/* -1= inappropriate media state detected
|
|
0= libburn multi-session media, resp. undecided yet
|
|
1= random access media */
|
|
int emulation_mode;
|
|
|
|
/* Although rarely used, libburn can operate on several
|
|
drives simultaneously. */
|
|
struct isoburn *prev;
|
|
struct isoburn *next;
|
|
|
|
|
|
/* If >= 0, this address is used as reply for isoburn_disc_get_msc1()
|
|
*/
|
|
int fabricated_msc1;
|
|
|
|
/* If >= 0, this address is used in isoburn_disc_track_lba_nwa()
|
|
as reply parameter nwa.
|
|
(The other nwa parameters below apply only to the effective write address
|
|
on random access media. msc2 is handed to libisofs but not to libburn.)
|
|
*/
|
|
int fabricated_msc2;
|
|
|
|
|
|
/* The nwa to be used for a first session on the present kind of overwriteable
|
|
media (usually Libisoburn_overwriteable_starT, but might be forced to 0)
|
|
*/
|
|
int zero_nwa;
|
|
|
|
/* Start address as given by image examination (bytes, not blocks) */
|
|
off_t min_start_byte;
|
|
|
|
/* Aligned start address to be used for processing (counted in blocks) */
|
|
int nwa;
|
|
|
|
|
|
/* Truncate to .nwa an eventual regular file serving as output drive */
|
|
int truncate;
|
|
|
|
/* Eventual freely fabricated isoburn_disc_get_status().
|
|
BURN_DISC_UNREADY means that this variable is disabled
|
|
and normally emulated status is in effect.
|
|
*/
|
|
enum burn_disc_status fabricated_disc_status;
|
|
|
|
/* Eventual emulated table of content read from the chain of ISO headers
|
|
on overwriteable media.
|
|
*/
|
|
struct isoburn_toc_entry *toc;
|
|
|
|
/* Indicator wether the most recent burn run worked :
|
|
-1 = undetermined, ask libburn , 0 = failure , 1 = success
|
|
To be inquired by isoburn_drive_wrote_well()
|
|
*/
|
|
int wrote_well;
|
|
|
|
|
|
/* Buffered ISO head from media (should that become part of
|
|
ecma119_read_opts ?) */
|
|
uint8_t target_iso_head[Libisoburn_target_head_sizE];
|
|
|
|
/* Libisofs image context */
|
|
IsoImage *image;
|
|
|
|
/* The block data source from which the existing image is read.
|
|
*/
|
|
IsoDataSource *iso_data_source;
|
|
|
|
/* The burn source which transfers data from libisofs to libburn.
|
|
It has its own fifo.
|
|
*/
|
|
struct burn_source *iso_source;
|
|
|
|
/* For iso_tree_set_report_callback() */
|
|
int (*read_pacifier)(IsoImage*, IsoFileSource*);
|
|
|
|
/* For iso_image_attach_data() */
|
|
void *read_pacifier_handle;
|
|
|
|
/* An application provided method to immediately deliver messages */
|
|
int (*msgs_submit)(void *handle, int error_code, char msg_text[],
|
|
int os_errno, char severity[], int flag);
|
|
void *msgs_submit_handle; /* specific to application method */
|
|
int msgs_submit_flag; /* specific to application method */
|
|
|
|
};
|
|
|
|
|
|
/* Creation and disposal function */
|
|
int isoburn_new(struct isoburn **objpt, int flag);
|
|
int isoburn_destroy(struct isoburn **objpt, int flag);
|
|
|
|
/* Eventual readers for public attributes */
|
|
/* ( put into separate .h file then ) */
|
|
int isoburn_get_emulation_mode(struct isoburn *o, int *pt, int flag);
|
|
int isoburn_get_target_volset(struct isoburn *o, IsoImage **pt, int flag);
|
|
|
|
/* List management */
|
|
int isoburn_get_prev(struct isoburn *o, struct isoburn **pt, int flag);
|
|
int isoburn_get_next(struct isoburn *o, struct isoburn **pt, int flag);
|
|
int isoburn_destroy_all(struct isoburn **objpt, int flag);
|
|
int isoburn_link(struct isoburn *o, struct isoburn *link, int flag);
|
|
int isoburn_count(struct isoburn *o, int flag);
|
|
int isoburn_by_idx(struct isoburn *o, int idx, struct isoburn **pt, int flag);
|
|
int isoburn_find_by_drive(struct isoburn **pt, struct burn_drive *d, int flag);
|
|
|
|
|
|
/* Non API inner interfaces */
|
|
|
|
/* Submit a libisofs error to the libburn messenger. An application message
|
|
reader shall recognize the error code range and attribute it to the
|
|
libisofs message channel to which one cannot submit via API.
|
|
@param iso_error_code return value <= 0 from a libisofs API call.
|
|
@param default_msg_text is to be put out if iso_error_code leads to no
|
|
error message
|
|
@param os_errno operating system errno, submit 0 if none is known
|
|
@param min_severity minimum severity, might be be increased if libisofs
|
|
error severity surpasses min_severity.
|
|
@param flag Bitfield, submit 0 for now
|
|
*/
|
|
int isoburn_report_iso_error(int iso_error_code, char default_msg_text[],
|
|
int os_errno, char min_severity[], int flag);
|
|
|
|
/* Calls from burn_wrap.c into isofs_wrap.c */
|
|
|
|
int isoburn_start_emulation(struct isoburn *o, int flag);
|
|
int isoburn_invalidate_iso(struct isoburn *o, int flag);
|
|
|
|
|
|
/* Calls from isofs_wrap.c into burn_wrap.c */
|
|
|
|
/** Get an eventual isoburn object which is wrapped around the drive.
|
|
@param pt Eventually returns a pointer to the found object.
|
|
It is allowed to become NULL if return value is -1 or 0.
|
|
In this case, the drive is a genuine libburn drive
|
|
with no emulation activated by isoburn.
|
|
@param drive The drive to be searched for
|
|
@param flag unused yet
|
|
@return -1 unsuitable media, 0 generic media, 1 emulated media.
|
|
*/
|
|
int isoburn_find_emulator(struct isoburn **pt,
|
|
struct burn_drive *drive, int flag);
|
|
|
|
/* Deliver an event message. Either via a non-NULL o->msgs_submit() method
|
|
or via burn_msgs_submit() of libburn.
|
|
*/
|
|
int isoburn_msgs_submit(struct isoburn *o, int error_code, char msg_text[],
|
|
int os_errno, char severity[], int flag);
|
|
|
|
/** Set the start address for an emulated add-on session. The value will
|
|
be rounded up to the alignment necessary for the media. The aligned
|
|
value will be divided by 2048 and then put into o->nwa .
|
|
@param o The isoburn object to be programmed.
|
|
@param value The start address in bytes
|
|
@param flag unused yet
|
|
@return <=0 is failure , >0 success
|
|
*/
|
|
int isoburn_set_start_byte(struct isoburn *o, off_t value, int flag);
|
|
|
|
/** Obtains the image address offset to be used with image generation.
|
|
This is either the (emulated) drive nwa or a value set by
|
|
isoburn_prepare_blind_grow().
|
|
In any case this is the address to tell to iso_write_opts_set_ms_block().
|
|
@param o The isoburn object to be inquired
|
|
@param opts If not NULL: write parameters to be set on drive before query
|
|
@param msc2 The value to be used with iso_write_opts_set_ms_block()
|
|
@param flag unused yet
|
|
@return <=0 is failure , >0 success
|
|
*/
|
|
int isoburn_get_msc2(struct isoburn *o,
|
|
struct burn_write_opts *opts, int *msc2, int flag);
|
|
|
|
/** Get a data source suitable for read from a drive using burn_read_data()
|
|
function.
|
|
@param d drive to read from. Must be grabbed.
|
|
@return the data source, NULL on error. Must be freed with libisofs
|
|
iso_data_source_unref() function. Note: this doesn't release
|
|
the drive.
|
|
*/
|
|
IsoDataSource *
|
|
isoburn_data_source_new(struct burn_drive *d);
|
|
|
|
/** Disable read capabilities of a data source which was originally created
|
|
by isoburn_data_source_new(). After this any attempt to read will yield
|
|
a FATAL programming error event.
|
|
This is usually done to allow libburn to release the drive while libisofs
|
|
still holds a reference to the data source object. libisofs is not supposed
|
|
to use this object for reading any more, nevertheless. The disabled state
|
|
of the data source is a safety fence around this daring situation.
|
|
@param src The data source to be disabled
|
|
@param flag unused yet
|
|
@return <=0 is failure , >0 success
|
|
*/
|
|
int isoburn_data_source_shutdown(IsoDataSource *src, int flag);
|
|
|
|
|
|
/**
|
|
* Options for image reading.
|
|
(Comments here may be outdated. API getter/setter function descriptions
|
|
may override the descriptions here. Any difference is supposed to be a
|
|
minor correction only.)
|
|
*/
|
|
struct isoburn_read_opts {
|
|
unsigned int norock:1; /*< Do not read Rock Ridge extensions */
|
|
unsigned int nojoliet:1; /*< Do not read Joliet extensions */
|
|
unsigned int noiso1999:1; /*< Do not read ISO 9660:1999 enhanced tree */
|
|
|
|
/* ts A90121 */
|
|
unsigned int noaaip:1; /* Do not read AAIP for ACL and EA */
|
|
unsigned int noacl:1; /* Do not read ACL from external file objects */
|
|
unsigned int noea:1; /* Do not read XFS-style EA from externals */
|
|
|
|
/* ts A90508 */
|
|
unsigned int noino:1; /* Discard eventual PX inode numbers */
|
|
|
|
/* ts A90810 */
|
|
unsigned int nomd5:1; /* Do not read eventual MD5 array */
|
|
|
|
unsigned int preferjoliet:1;
|
|
/*< When both Joliet and RR extensions are present, the RR
|
|
* tree is used. If you prefer using Joliet, set this to 1. */
|
|
uid_t uid; /**< Default uid when no RR */
|
|
gid_t gid; /**< Default uid when no RR */
|
|
mode_t mode; /**< Default mode when no RR (only permissions) */
|
|
mode_t dirmode; /**< Default mode for directories
|
|
when no RR (only permissions) */
|
|
|
|
/**
|
|
* Input charset for RR file names. NULL to use default locale charset.
|
|
*/
|
|
char *input_charset;
|
|
|
|
/**
|
|
* Enable or disable methods to automatically choose an input charset.
|
|
* This eventually overrides input_charset.
|
|
*
|
|
* bit0= allow to set the input character set automatically from
|
|
* attribute "isofs.cs" of root directory
|
|
*/
|
|
int auto_input_charset;
|
|
|
|
/* modified by the function isoburn_read_image */
|
|
unsigned int hasRR:1; /*< It will be set to 1 if RR extensions are present,
|
|
to 0 if not. */
|
|
unsigned int hasJoliet:1; /*< It will be set to 1 if Joliet extensions are
|
|
present, to 0 if not. */
|
|
|
|
/**
|
|
* It will be set to 1 if the image is an ISO 9660:1999, i.e. it has
|
|
* a version 2 Enhanced Volume Descriptor.
|
|
*/
|
|
unsigned int hasIso1999:1;
|
|
|
|
/** It will be set to 1 if El-Torito boot record is present, to 0 if not.*/
|
|
unsigned int hasElTorito:1;
|
|
|
|
uint32_t size; /**< Will be filled with the size (in 2048 byte block) of
|
|
* the image, as reported in the PVM. */
|
|
unsigned int pretend_blank:1; /* always create empty image */
|
|
};
|
|
|
|
|
|
/**
|
|
* Options for image generation by libisofs and image transport to libburn.
|
|
(Comments here may be outdated. API getter/setter function descriptions
|
|
may override the descriptions here. Any difference is supposed to be a
|
|
minor correction only.)
|
|
*/
|
|
struct isoburn_imgen_opts {
|
|
|
|
/* Options for image generation */
|
|
|
|
int level; /**< ISO level to write at. */
|
|
|
|
/** Which extensions to support. */
|
|
unsigned int rockridge :1;
|
|
unsigned int joliet :1;
|
|
unsigned int iso1999 :1;
|
|
|
|
/* Whether to mark suitable IsoNode as hardlinks in RRIP PX */
|
|
unsigned int hardlinks :1;
|
|
|
|
/* Write eventual AAIP info containing ACL and EA */
|
|
unsigned int aaip :1;
|
|
|
|
/* Produce and write a MD5 checksum of the whole session stream. */
|
|
unsigned int session_md5 :1;
|
|
|
|
/* Produce and write MD5 checksums for each single IsoFile.
|
|
See parameter files of iso_write_opts_set_record_md5().
|
|
*/
|
|
unsigned int file_md5 :2;
|
|
|
|
/* relaxed constraints */
|
|
|
|
/*
|
|
* 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 paths in the Joliet tree to have more than 240 characters.
|
|
*/
|
|
unsigned int joliet_longer_paths :1;
|
|
|
|
/**
|
|
* Store timestamps as GMT rather than in local time.
|
|
*/
|
|
unsigned int always_gmt :1;
|
|
|
|
/**
|
|
* Write Rock Ridge info as of specification RRIP-1.10 rather than
|
|
* RRIP-1.12: signature "RRIP_1991A" rather than "IEEE_1282",
|
|
* field PX without file serial number
|
|
*/
|
|
unsigned int rrip_version_1_10 :1;
|
|
|
|
/**
|
|
* Store as ECMA-119 Directory Record timestamp the mtime
|
|
* of the source rather than the image creation time.
|
|
*/
|
|
unsigned int dir_rec_mtime :1;
|
|
|
|
/**
|
|
* Write AAIP as extension according to SUSP 1.10 rather than SUSP 1.12.
|
|
* I.e. without announcing it by an ER field and thus without the need
|
|
* to preceed the RRIP fields by an ES and to preceed the AA field by ES.
|
|
*/
|
|
unsigned int aaip_susp_1_10 :1;
|
|
|
|
unsigned int sort_files:1;
|
|
/**< If files should be sorted based on their weight. */
|
|
|
|
/**
|
|
* 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 set 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. */
|
|
|
|
char *output_charset; /**< NULL to use default charset */
|
|
|
|
|
|
/* Options for image transport */
|
|
|
|
/** The number of bytes to be used for the fifo which decouples libisofs
|
|
and libburn for better throughput and for reducing the risk of
|
|
interrupting signals hitting the libburn thread which operates the
|
|
MMC drive.
|
|
The size will be rounded up to the next full 2048.
|
|
Minimum is 64kiB, maximum is 1 GiB (but that is too much anyway).
|
|
*/
|
|
int fifo_size;
|
|
|
|
|
|
/** Output value: Block address of session start as evaluated from media
|
|
and other options by libisoburn and libburn.
|
|
If <0 : Invalid
|
|
If >=0: Valid block number. Block size is always 2 KiB.
|
|
*/
|
|
int effective_lba;
|
|
|
|
/** Output value: Block address of data section start as predicted by
|
|
libisofs.
|
|
If < 16: Invalid
|
|
If >=16: Valid block number. Block size is always 2 KiB.
|
|
*/
|
|
int data_start_lba;
|
|
|
|
/**
|
|
* If not empty: Parameters "name" and "timestamp" for a scdbackup stream
|
|
* checksum tag. See scdbackup/README appendix VERIFY.
|
|
* It makes sense only for single session images which start at LBA 0.
|
|
* Such a tag may be part of a libisofs checksum tag block after the
|
|
* session tag line. It then covers the whole session up to its own start
|
|
* position.
|
|
* If scdbackup_tag_written is not NULL then it is a pointer to an
|
|
* application provided array with at least 512 characters. The effectively
|
|
* written scdbackup tag will be copied to this memory location.
|
|
*/
|
|
char scdbackup_tag_name[81];
|
|
char scdbackup_tag_time[19];
|
|
char *scdbackup_tag_written;
|
|
|
|
};
|
|
|
|
|
|
/* Alignment for session starts on overwriteable media.
|
|
(Increased from 16 to 32 blocks for aligning to BD-RE clusters.)
|
|
*/
|
|
#define Libisoburn_nwa_alignemenT 32
|
|
|
|
|
|
/* Alignment for outer session scanning with -ROM drives.
|
|
(E.g. my DVD-ROM drive shows any DVD type as 0x10 "DVD-ROM" with
|
|
more or less false capacity and TOC.)
|
|
*/
|
|
#define Libisoburn_toc_scan_alignemenT 16
|
|
|
|
/* Maximum gap to be bridged during a outer TOC scan. Gaps appear between the
|
|
end of a session and the start of the next session.
|
|
The longest gap found so far was about 38100 after the first session of a
|
|
DVD-R.
|
|
*/
|
|
#define Libisoburn_toc_scan_max_gaP 65536
|
|
|
|
|
|
/* Creating a chain of image headers which form a TOC:
|
|
|
|
The header of the first session is written after the LBA 0 header.
|
|
So it persists and can give the end of its session. By help of
|
|
Libisoburn_nwa_alignemenT it should be possible to predict the start
|
|
of the next session header.
|
|
The LBA 0 header is written by isoburn_activate_session() already
|
|
with the first session. So the media is mountable.
|
|
A problem arises with DVD-RW in Intermediate State. They cannot be
|
|
written by random access before they were written sequentially.
|
|
In this case, no copy of the session 1 header is maintained and no TOC
|
|
will be possible. Thus writing begins sequentially at LBA 0.
|
|
*/
|
|
#define Libisoburn_overwriteable_starT \
|
|
((off_t) (Libisoburn_target_head_sizE/2048))
|
|
|
|
|
|
/* Wrappers for emulation of TOC on overwriteable media */
|
|
|
|
struct isoburn_toc_track {
|
|
/* Either track or toc_entry are supposed to be NULL */
|
|
struct burn_track *track;
|
|
struct isoburn_toc_entry *toc_entry;
|
|
};
|
|
|
|
struct isoburn_toc_session {
|
|
/* Either session or tracks and toc_entry are supposed to be NULL */
|
|
struct burn_session *session;
|
|
struct isoburn_toc_track **track_pointers;
|
|
int track_count;
|
|
struct isoburn_toc_entry *toc_entry;
|
|
};
|
|
|
|
struct isoburn_toc_disc {
|
|
/* Either disc or sessions and toc are supposed to be NULL */
|
|
struct burn_disc *disc;
|
|
struct isoburn_toc_session *sessions; /* storage array */
|
|
struct isoburn_toc_session **session_pointers; /* storage array */
|
|
struct isoburn_toc_track *tracks; /* storage array */
|
|
struct isoburn_toc_track **track_pointers; /* storage array */
|
|
int session_count;
|
|
int track_count;
|
|
struct isoburn_toc_entry *toc;
|
|
};
|
|
|
|
#endif /* Isoburn_includeD */
|
|
|