326 lines
11 KiB
C
326 lines
11 KiB
C
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/*
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Class struct of libisoburn.
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Copyright 2007 Vreixo Formoso Lopes <metalpain2002@yahoo.es>
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and Thomas Schmitt <scdbackup@gmx.net>
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*/
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#ifndef Isoburn_includeD
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#define Isoburn_includeD
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/* <<< transition macro */
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#define Libisoburn_no_fifO 1
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/* for uint8_t */
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#include <stdint.h>
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struct isoburn {
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/* The libburn drive to which this isoburn object is related
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Most isoburn calls will use a burn_drive as object handle */
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struct burn_drive *drive;
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/* -1= inappropriate media state detected
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0= libburn multi-session media, resp. undecided yet
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1= random access media */
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int emulation_mode;
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/* Although rarely used, libburn can operate on several
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drives simultaneously. */
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struct isoburn *prev;
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struct isoburn *next;
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/* Start address as given by image examination (bytes, not blocks) */
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off_t min_start_byte;
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/* Aligned start address to be used for processing (counted in blocks) */
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int nwa;
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/* Truncate to .nwa an eventual regular file serving as output drive */
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int truncate;
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/* Eventual freely fabricated isoburn_disc_get_status().
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BURN_DISC_UNREADY means that this variable is disabled
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and normally emulated status is in effect.
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*/
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enum burn_disc_status fabricated_disc_status;
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#ifndef Libisoburn_no_fifO
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/* The fifo which is installed between track and libisofs burn_source
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*/
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struct burn_source *fifo;
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#endif /* ! Libisoburn_no_fifO */
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/* Indicator wether the most recent burn run worked :
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-1 = undetermined, ask libburn , 0 = failure , 1 = success
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To be inquired by isoburn_drive_wrote_well()
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*/
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int wrote_well;
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/* Buffered ISO head from media (should that become part of
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ecma119_read_opts ?) */
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uint8_t target_iso_head[65536];
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/* Libisofs image context */
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IsoImage *image;
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#ifdef Libisoburn_no_fifO
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/* The burn source which transfers data from libisofs to libburn.
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It has its own fifo.
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*/
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struct burn_source *iso_source;
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#endif /* Libisoburn_no_fifO */
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/* For iso_tree_set_report_callback() */
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int (*read_pacifier)(IsoImage*, IsoFileSource*);
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/* For iso_image_attach_data() */
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void *read_pacifier_handle;
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};
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/* Creation and disposal function */
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int isoburn_new(struct isoburn **objpt, int flag);
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int isoburn_destroy(struct isoburn **objpt, int flag);
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/* Eventual readers for public attributes */
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/* ( put into separate .h file then ) */
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int isoburn_get_emulation_mode(struct isoburn *o, int *pt, int flag);
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int isoburn_get_target_volset(struct isoburn *o, IsoImage **pt, int flag);
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/* List management */
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int isoburn_get_prev(struct isoburn *o, struct isoburn **pt, int flag);
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int isoburn_get_next(struct isoburn *o, struct isoburn **pt, int flag);
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int isoburn_destroy_all(struct isoburn **objpt, int flag);
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int isoburn_link(struct isoburn *o, struct isoburn *link, int flag);
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int isoburn_count(struct isoburn *o, int flag);
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int isoburn_by_idx(struct isoburn *o, int idx, struct isoburn **pt, int flag);
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int isoburn_find_by_drive(struct isoburn **pt, struct burn_drive *d, int flag);
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/* Non API inner interfaces */
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/* Submit a libisofs error to the libburn messenger. An application message
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reader shall recognize the error code range and attribute it to the
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libisofs message channel to which one cannot submit via API.
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@param iso_error_code return value <= 0 from a libisofs API call.
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@param default_msg_text is to be put out if iso_error_code leads to no
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error message
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@param os_errno operating system errno, submit 0 if none is known
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@param min_severity minimum severity, might be be increased if libisofs
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error severity surpasses min_severity.
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@param flag Bitfield, submit 0 for now
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*/
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int isoburn_report_iso_error(int iso_error_code, char default_msg_text[],
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int os_errno, char min_severity[], int flag);
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/* Calls from burn_wrap.c into isofs_wrap.c */
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int isoburn_start_emulation(struct isoburn *o, int flag);
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int isoburn_invalidate_iso(struct isoburn *o, int flag);
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/* Calls from isofs_wrap.c into burn_wrap.c */
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/** Get an eventual isoburn object which is wrapped around the drive.
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@param pt Eventually returns a pointer to the found object.
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It is allowed to become NULL if return value is -1 or 0.
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In this case, the drive is a genuine libburn drive
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with no emulation activated by isoburn.
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@param drive The drive to be searched for
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@param flag unused yet
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@return -1 unsuitable media, 0 generic media, 1 emulated media.
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*/
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int isoburn_find_emulator(struct isoburn **pt,
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struct burn_drive *drive, int flag);
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/** Set the start address for an emulated add-on session. The value will
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be rounded up to the alignment necessary for the media. The aligned
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value will be divided by 2048 and then put into o->nwa .
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@param o The isoburn object to be programmed.
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@param value The start address in bytes
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@param flag unused yet
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@return <=0 is failure , >0 success
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*/
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int isoburn_set_start_byte(struct isoburn *o, off_t value, int flag);
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/** Get a data source suitable for read from a drive using burn_read_data()
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function.
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@param d drive to read from. Must be grabbed.
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@return the data source, NULL on error. Must be freed with libisofs
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iso_data_source_unref() function. Note: this doesn't release
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the drive.
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*/
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IsoDataSource *
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isoburn_data_source_new(struct burn_drive *d);
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/**
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* Options for image reading.
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(Comments here may be outdated. API getter/setter function descriptions
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may override the descriptions here. Any difference is supposed to be a
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minor correction only.)
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*/
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struct isoburn_read_opts {
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unsigned int norock:1; /*< Do not read Rock Ridge extensions */
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unsigned int nojoliet:1; /*< Do not read Joliet extensions */
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unsigned int noiso1999:1; /*< Do not read ISO 9660:1999 enhanced tree */
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unsigned int preferjoliet:1;
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/*< When both Joliet and RR extensions are present, the RR
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* tree is used. If you prefer using Joliet, set this to 1. */
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uid_t uid; /**< Default uid when no RR */
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gid_t gid; /**< Default uid when no RR */
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mode_t mode; /**< Default mode when no RR (only permissions) */
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mode_t dirmode; /**< Default mode for directories
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when no RR (only permissions) */
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/**
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* Input charset for RR file names. NULL to use default locale charset.
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*/
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char *input_charset;
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/* modified by the function isoburn_read_image */
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unsigned int hasRR:1; /*< It will be set to 1 if RR extensions are present,
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to 0 if not. */
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unsigned int hasJoliet:1; /*< It will be set to 1 if Joliet extensions are
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present, to 0 if not. */
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/**
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* It will be set to 1 if the image is an ISO 9660:1999, i.e. it has
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* a version 2 Enhanced Volume Descriptor.
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*/
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unsigned int hasIso1999:1;
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/** It will be set to 1 if El-Torito boot record is present, to 0 if not.*/
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unsigned int hasElTorito:1;
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uint32_t size; /**< Will be filled with the size (in 2048 byte block) of
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* the image, as reported in the PVM. */
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unsigned int pretend_blank:1; /* always create empty image */
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};
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/**
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* Options for image generation by libisofs and image transport to libburn.
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(Comments here may be outdated. API getter/setter function descriptions
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may override the descriptions here. Any difference is supposed to be a
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minor correction only.)
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*/
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struct isoburn_imgen_opts {
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/* Options for image generation */
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int level; /**< ISO level to write at. */
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/** Which extensions to support. */
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unsigned int rockridge :1;
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unsigned int joliet :1;
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unsigned int iso1999 :1;
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/* relaxed constraints */
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/*
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* Relaxed constraints. Setting any of these to 1 break the specifications,
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* but it is supposed to work on most moderns systems. Use with caution.
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*/
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/**
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* Omit the version number (";1") at the end of the ISO-9660 identifiers.
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* Version numbers are usually not used.
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*/
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unsigned int omit_version_numbers :1;
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/**
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* Allow ISO-9660 directory hierarchy to be deeper than 8 levels.
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*/
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unsigned int allow_deep_paths :1;
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/**
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* Allow path in the ISO-9660 tree to have more than 255 characters.
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*/
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unsigned int allow_longer_paths :1;
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/**
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* Allow a single file or directory hierarchy to have up to 37 characters.
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* This is larger than the 31 characters allowed by ISO level 2, and the
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* extra space is taken from the version number, so this also forces
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* omit_version_numbers.
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*/
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unsigned int max_37_char_filenames :1;
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/**
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* ISO-9660 forces filenames to have a ".", that separates file name from
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* extension. libisofs adds it if original filename doesn't has one. Set
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* this to 1 to prevent this behavior
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*/
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unsigned int no_force_dots :1;
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/**
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* Allow lowercase characters in ISO-9660 filenames. By default, only
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* uppercase characters, numbers and a few other characters are allowed.
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*/
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unsigned int allow_lowercase :1;
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/**
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* Allow all ASCII characters to be appear on an ISO-9660 filename. Note
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* that "/" and "\0" characters are never allowed, even in RR names.
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*/
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unsigned int allow_full_ascii :1;
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/**
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* Allow paths in the Joliet tree to have more than 240 characters.
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*/
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unsigned int joliet_longer_paths :1;
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unsigned int sort_files:1;
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/**< If files should be sorted based on their weight. */
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/**
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* The following options set the default values for files and directory
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* permissions, gid and uid. All these take one of three values: 0, 1 or 2.
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* If 0, the corresponding attribute will be kept as set in the IsoNode.
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* Unless you have changed it, it corresponds to the value on disc, so it
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* is suitable for backup purposes. If set to 1, the corresponding attrib.
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* will be changed by a default suitable value. Finally, if you set it to
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* 2, the attrib. will be changed with the value specified in the options
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* below. Note that for mode attributes, only the permissions are set, the
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* file type remains unchanged.
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*/
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unsigned int replace_dir_mode :2;
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unsigned int replace_file_mode :2;
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unsigned int replace_uid :2;
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unsigned int replace_gid :2;
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mode_t dir_mode; /** Mode to use on dirs when replace_dir_mode == 2. */
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mode_t file_mode; /** Mode to use on files when replace_file_mode == 2. */
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uid_t uid; /** uid to use when replace_uid == 2. */
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gid_t gid; /** gid to use when replace_gid == 2. */
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char *output_charset; /**< NULL to use default charset */
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/* Options for image transport */
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/** The number of bytes to be used for the fifo which decouples libisofs
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and libburn for better throughput and for reducing the risk of
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interrupting signals hitting the libburn thread which operates the
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MMC drive.
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The size will be rounded up to the next full 2048.
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Minimum is 64kiB, maximum is 1 GiB (but that is too much anyway).
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*/
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int fifo_size;
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};
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#endif /* Isoburn_includeD */
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