libisoburn-0.3.4/libisoburn/burn_wrap.c File Reference

#include <stdio.h>
#include <ctype.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <time.h>
#include <regex.h>
#include <libburn/libburn.h>
#include <libisofs/libisofs.h>
#include "libisoburn.h"
#include "isoburn.h"

Include dependency graph for burn_wrap.c:

Go to the source code of this file.

Defines

#define Isoburn_libburn_dot_h_too_olD   1

Functions

static int isoburn_emulate_toc (struct burn_drive *d, int flag)
int isoburn_initialize (char msg[1024], int flag)
 Overview.
int isoburn_libisofs_req (int *major, int *minor, int *micro)
 The minimum version of libisofs to be used with this version of libisoburn at runtime.
int isoburn_libburn_req (int *major, int *minor, int *micro)
 The minimum version of libburn to be used with this version of libisoburn at runtime.
int isoburn_set_msgs_submit (int(*msgs_submit)(void *handle, int error_code, char msg_text[], int os_errno, char severity[], int flag), void *submit_handle, int submit_flag, int flag)
 Note: Above version numbers are also recorded in configure.ac because libtool wants them as parameters at build time.
int isoburn_is_intermediate_dvd_rw (struct burn_drive *d, int flag)
static int isoburn_welcome_media (struct isoburn **o, struct burn_drive *d, int flag)
 Examines the media and sets appropriate emulation if needed.
int isoburn_drive_aquire (struct burn_drive_info *drive_infos[], char *adr, int flag)
 Aquire a target drive by its filesystem path resp.
int isoburn_drive_scan_and_grab (struct burn_drive_info *drive_infos[], char *adr, int load)
 Aquire a target drive by its filesystem path resp.
int isoburn_drive_grab (struct burn_drive *drive, int load)
 Aquire a drive from the burn_drive_info[] array which was obtained by a previous call of burn_drive_scan().
int isoburn_find_emulator (struct isoburn **pt, struct burn_drive *drive, int flag)
 Retrieve media emulation and eventual isoburn emulator of drive.
enum burn_disc_status isoburn_disc_get_status (struct burn_drive *drive)
 Inquire the media status.
int isoburn_disc_erasable (struct burn_drive *d)
 Tells whether the media can be treated by isoburn_disc_erase().
void isoburn_disc_erase (struct burn_drive *drive, int fast)
 Mark the media as blank.
off_t isoburn_disc_available_space (struct burn_drive *d, struct burn_write_opts *opts)
 Return the best possible estimation of the currently available capacity of the media.
int isoburn_disc_get_msc1 (struct burn_drive *d, int *start_lba)
 Obtain the start block number of the most recent session on media.
int isoburn_disc_track_lba_nwa (struct burn_drive *d, struct burn_write_opts *opts, int trackno, int *lba, int *nwa)
 Use this with trackno==0 to obtain the predicted start block number of the new session.
int isoburn_get_msc2 (struct isoburn *o, struct burn_write_opts *opts, int *msc2, int flag)
 Obtains the image address offset to be used with image generation.
void isoburn_disc_write (struct burn_write_opts *opts, struct burn_disc *disc)
 Start writing of the new session.
void isoburn_drive_release (struct burn_drive *drive, int eject)
 Release an aquired drive.
void isoburn_finish (void)
 Shutdown all three libraries.
int isoburn_needs_emulation (struct burn_drive *drive)
 Inquire wether the media needs emulation or would be suitable for generic multi-session via libburn.
int isoburn_set_start_byte (struct isoburn *o, off_t value, int flag)
 Set the start address for an emulated add-on session.
int isoburn_get_min_start_byte (struct burn_drive *d, off_t *start_byte, int flag)
 Obtain the size which was attributed to an emulated appendable on actually overwriteable media.
int isoburn_drive_wrote_well (struct burn_drive *d)
 Inquire whether the most recent write run was successful.
int isoburn_get_fifo_status (struct burn_drive *d, int *size, int *free_bytes, char **status_text)
 Inquire state and fill parameters of the fifo which is attached to the emerging track.
int isoburn__sev_to_text (int severity, char **severity_name, int flag)
int isoburn__text_to_sev (char *severity_name, int *severity_number, int flag)
int isoburn_report_iso_error (int iso_error_code, char msg_text[], int os_errno, char min_severity[], int flag)
int isoburn_read_iso_head_parse (struct burn_drive *d, unsigned char *data, int *image_blocks, char *info, int flag)
int isoburn_read_iso_head (struct burn_drive *d, int lba, int *image_blocks, char *info, int flag)
 Try whether the data at the given address look like a ISO 9660 image header and obtain its alleged size.
int isoburn_make_toc_entry (struct isoburn *o, int *session_count, int lba, int track_blocks, int flag)
int isoburn_toc_new_arrays (struct isoburn_toc_disc *o, int session_count, int track_count, int flag)
int isoburn_toc_destroy_arrays (struct isoburn_toc_disc *o, int flag)
struct isoburn_toc_discisoburn_toc_drive_get_disc (struct burn_drive *d)
 Obtain a master handle for the table of content.
int isoburn_toc_disc_get_sectors (struct isoburn_toc_disc *disc)
 Tell the number of 2048 byte blocks covered by the table of content.
struct isoburn_toc_session ** isoburn_toc_disc_get_sessions (struct isoburn_toc_disc *disc, int *num)
 Get the array of session handles from the table of content.
int isoburn_toc_session_get_sectors (struct isoburn_toc_session *s)
 Tell the number of 2048 byte blocks covered by a particular session.
int isoburn_toc_entry_finish (struct burn_toc_entry *entry, int session_no, int track_no, int flag)
void isoburn_toc_session_get_leadout_entry (struct isoburn_toc_session *s, struct burn_toc_entry *entry)
 Obtain a copy of the entry which describes the end of a particular session.
struct isoburn_toc_track ** isoburn_toc_session_get_tracks (struct isoburn_toc_session *s, int *num)
 Get the array of track handles from a particular session.
void isoburn_toc_track_get_entry (struct isoburn_toc_track *t, struct burn_toc_entry *entry)
 Obtain a copy of the entry which describes a particular track.
void isoburn_toc_disc_free (struct isoburn_toc_disc *d)
 Release the memory associated with a master handle of media.
int isoburn_get_track_lba (struct isoburn_toc_track *track, int *lba, int flag)
int isoburn_drive_set_msgs_submit (struct burn_drive *d, int(*msgs_submit)(void *handle, int error_code, char msg_text[], int os_errno, char severity[], int flag), void *submit_handle, int submit_flag, int flag)
 Attach to a drive an application provided method for immediate delivery of messages.
int isoburn_set_msc1 (struct burn_drive *d, int adr_mode, char *adr_value, int flag)
 Set up isoburn_disc_get_msc1() to return a fabricated value.
int isoburn_get_mount_params (struct burn_drive *d, int adr_mode, char *adr_value, int *lba, int *track, int *session, char volid[33], int flag)
 Try to convert the given entity address into various entity addresses which would describe it.

Variables

struct isoburnisoburn_list_start
int(* libisoburn_default_msgs_submit )(void *handle, int error_code, char msg_text[], int os_errno, char severity[], int flag)
void * libisoburn_default_msgs_submit_handle
int libisoburn_default_msgs_submit_flag


Define Documentation

#define Isoburn_libburn_dot_h_too_olD   1


Function Documentation

int isoburn__sev_to_text ( int  severity,
char **  severity_name,
int  flag 
)

Definition at line 916 of file burn_wrap.c.

Referenced by isoburn_report_iso_error().

00918 {
00919  int ret;
00920    
00921  ret= iso_sev_to_text(severity, severity_name);
00922  if(ret>0)
00923    return(ret);
00924  ret= burn_sev_to_text(severity, severity_name, 0);
00925  return(ret);
00926 }

int isoburn__text_to_sev ( char *  severity_name,
int *  severity_number,
int  flag 
)

Definition at line 929 of file burn_wrap.c.

Referenced by isoburn_report_iso_error().

00930 {
00931  int ret= 1;
00932 
00933  ret= iso_text_to_sev(severity_name, severity_number);
00934  if(ret>0)
00935    return(ret);
00936  ret= burn_text_to_sev(severity_name, severity_number, 0);
00937  return(ret);
00938 }

off_t isoburn_disc_available_space ( struct burn_drive *  d,
struct burn_write_opts *  o 
)

Return the best possible estimation of the currently available capacity of the media.

This might depend on particular write option settings and on drive state. An eventual start address for emulated multi-session will be subtracted from the capacity estimation given by burn_disc_available_space(). Negative results get defaulted to 0. Wrapper for: burn_disc_available_space()

Since:
0.1.0
Parameters:
d The drive to query.
o If not NULL: write parameters to be set on drive before query
Returns:
number of most probably available free bytes

Definition at line 561 of file burn_wrap.c.

References isoburn::emulation_mode, isoburn_disc_get_status(), isoburn_find_emulator(), and isoburn::nwa.

00563 {
00564  int ret;
00565  struct isoburn *o;
00566  struct burn_write_opts *eff_opts= NULL, *local_opts= NULL;
00567  enum burn_disc_status s;
00568  off_t avail;
00569 
00570  eff_opts= opts;
00571  ret= isoburn_find_emulator(&o, d, 0);
00572  if(ret>0 && o!=NULL)
00573    if(o->emulation_mode!=0) {
00574      s= isoburn_disc_get_status(d);
00575      if(s==BURN_DISC_FULL) /* unknown data format in first 64 kB */
00576        return((off_t) 0);
00577      local_opts= burn_write_opts_new(d);
00578      eff_opts= local_opts;
00579      burn_write_opts_set_start_byte(eff_opts, ((off_t) o->nwa) * (off_t) 2048);
00580    }
00581  avail= burn_disc_available_space(d, eff_opts);
00582  if(local_opts!=NULL)
00583    burn_write_opts_free(local_opts);
00584  local_opts= NULL;
00585  return(avail);
00586 }

int isoburn_disc_erasable ( struct burn_drive *  d  ) 

Tells whether the media can be treated by isoburn_disc_erase().

Wrapper for: burn_disc_erasable()

Since:
0.1.0
Parameters:
drive The drive to inquire.
Returns:
0=not erasable , else erasable

Definition at line 516 of file burn_wrap.c.

References isoburn::emulation_mode, and isoburn_find_emulator().

00517 {
00518  int ret;
00519  struct isoburn *o;
00520 
00521  ret= isoburn_find_emulator(&o, d, 0);
00522  if(ret>0)
00523    if(o->emulation_mode==1)
00524      return(1);
00525  return burn_disc_erasable(d);
00526 }

void isoburn_disc_erase ( struct burn_drive *  drive,
int  fast 
)

Mark the media as blank.

With multi-session media this will call burn_disc_erase(). With random access media, an eventual ISO-9660 filesystem will get invalidated by altering its start blocks on media. In case of success, the media is in status BURN_DISC_BLANK afterwards. Wrapper for: burn_disc_erase()

Since:
0.1.0
Parameters:
drive The drive with the media to erase.
fast 1=fast erase, 0=thorough erase With DVD-RW, fast erase yields media incapable of multi-session.

Definition at line 529 of file burn_wrap.c.

References isoburn::emulation_mode, isoburn_disc_get_status(), isoburn_find_emulator(), isoburn_invalidate_iso(), and Libisoburn_target_head_sizE.

00530 {
00531  int ret;
00532  struct isoburn *o;
00533  enum burn_disc_status s;
00534  char zero_buffer[Libisoburn_target_head_sizE];
00535 
00536  ret= isoburn_find_emulator(&o, drive, 0);
00537  if(ret>0) {
00538    if(o->emulation_mode==-1) {
00539      /* To cause a negative reply with burn_drive_wrote_well() */
00540      burn_drive_cancel(drive);
00541      return;
00542    }
00543    if(o->emulation_mode>0) {
00544      s= isoburn_disc_get_status(drive);
00545      if(s==BURN_DISC_FULL) { /* unknown data format in first 64 kB */
00546        memset(zero_buffer, 0, Libisoburn_target_head_sizE);
00547        ret= burn_random_access_write(drive, (off_t) 0, zero_buffer,
00548                                      (off_t) Libisoburn_target_head_sizE, 1);
00549      } else {
00550        ret= isoburn_invalidate_iso(o, 0);
00551      }
00552      if(ret<=0)
00553        burn_drive_cancel(drive); /* mark run as failure */
00554      return;
00555    }
00556  }
00557  burn_disc_erase(drive, fast);
00558 }

int isoburn_disc_get_msc1 ( struct burn_drive *  d,
int *  start_lba 
)

Obtain the start block number of the most recent session on media.

In case of random access media this will normally be 0. Successfull return is not a guarantee that there is a ISO-9660 image at all. The call will fail, nevertheless,if isoburn_disc_get_status() returns not BURN_DISC_APPENDABLE or BURN_DISC_FULL. Note: The result of this call may be fabricated by a previous call of isoburn_set_msc1() which can override the rule to load the most recent session. Wrapper for: burn_disc_get_msc1()

Since:
0.1.0
Parameters:
d The drive to inquire
start_lba Contains on success the start address in 2048 byte blocks
Returns:
<=0 error , 1 = success

Definition at line 589 of file burn_wrap.c.

References isoburn::emulation_mode, isoburn::fabricated_msc1, isoburn_disc_get_status(), isoburn_find_emulator(), and isoburn_msgs_submit().

Referenced by isoburn_read_image().

00590 {
00591  int ret;
00592  struct isoburn *o;
00593 
00594 #ifdef Hardcoded_cd_rW
00595  /* <<< A70929 : hardcoded CD-RW with fabricated -msinfo */
00596  *start_lba= Hardcoded_cd_rw_c1;
00597  return(1);
00598 #endif
00599 
00600  if(isoburn_disc_get_status(d)!=BURN_DISC_APPENDABLE &&
00601     isoburn_disc_get_status(d)!=BURN_DISC_FULL) {
00602    isoburn_msgs_submit(NULL, 0x00060000,
00603                        "Media contains no recognizable data", 0, "SORRY", 0);
00604    return(0);
00605  }
00606  ret= isoburn_find_emulator(&o, d, 0);
00607  if(ret<0)
00608    return(0);
00609  if(o->fabricated_msc1>=0) {
00610    *start_lba= o->fabricated_msc1;
00611    return(1);
00612  }
00613  if(ret>0) if(o->emulation_mode>0) {
00614    *start_lba= 0;
00615    return(1);
00616  }
00617  return(burn_disc_get_msc1(d, start_lba));
00618 }

enum burn_disc_status isoburn_disc_get_status ( struct burn_drive *  drive  ) 

Inquire the media status.

Expect the whole spectrum of libburn BURN_DISC_* with multi-session media. Emulated states with random access media are BURN_DISC_BLANK and BURN_DISC_APPENDABLE. Wrapper for: burn_disc_get_status()

Since:
0.1.0
Parameters:
drive The drive to inquire.
Returns:
The status of the drive, or what kind of disc is in it. Note: BURN_DISC_UNGRABBED indicates wrong API usage

Definition at line 493 of file burn_wrap.c.

References isoburn::emulation_mode, isoburn::fabricated_disc_status, isoburn_find_emulator(), isoburn::nwa, and isoburn::zero_nwa.

Referenced by isoburn_disc_available_space(), isoburn_disc_erase(), isoburn_disc_get_msc1(), isoburn_is_intermediate_dvd_rw(), isoburn_needs_emulation(), isoburn_prepare_disc_aux(), and isoburn_read_image().

00494 {
00495  int ret;
00496  struct isoburn *o;
00497 
00498  ret= isoburn_find_emulator(&o, drive, 0);
00499  if(ret<0)
00500    return(BURN_DISC_UNSUITABLE);
00501  if(o!=NULL)
00502    if(o->fabricated_disc_status!=BURN_DISC_UNREADY)
00503      return(o->fabricated_disc_status);
00504  if(ret==0)
00505    return(burn_disc_get_status(drive));
00506 
00507  /* emulated status */
00508  if(o->emulation_mode==-1)
00509    return(BURN_DISC_UNSUITABLE);
00510  if(o->nwa>o->zero_nwa)
00511    return(BURN_DISC_APPENDABLE);
00512  return(BURN_DISC_BLANK);
00513 }

int isoburn_disc_track_lba_nwa ( struct burn_drive *  d,
struct burn_write_opts *  o,
int  trackno,
int *  lba,
int *  nwa 
)

Use this with trackno==0 to obtain the predicted start block number of the new session.

The interesting number is returned in parameter nwa. Wrapper for: burn_disc_track_lba_nwa()

Since:
0.1.0
Parameters:
d The drive to inquire
o If not NULL: write parameters to be set on drive before query
trackno Submit 0.
lba return value: start lba
nwa return value: Next Writeable Address
Returns:
1=nwa is valid , 0=nwa is not valid , -1=error

Definition at line 621 of file burn_wrap.c.

References isoburn::emulation_mode, isoburn_find_emulator(), and isoburn::nwa.

Referenced by isoburn_get_msc2(), and isoburn_prepare_disc_aux().

00624 {
00625  int ret;
00626  struct isoburn *o;
00627 
00628 #ifdef Hardcoded_cd_rW
00629  /* <<< A70929 : hardcoded CD-RW with fabricated -msinfo */
00630  *lba= Hardcoded_cd_rw_c1;
00631  *nwa= Hardcoded_cd_rw_nwA;
00632  return(1);
00633 #endif
00634 
00635  *nwa= *lba= 0;
00636  ret= isoburn_find_emulator(&o, d, 0);
00637  if(ret<0)
00638    return(0);
00639  if(ret>0) if(o->emulation_mode>0) {
00640    *lba= 0;
00641    *nwa= o->nwa;
00642    return(1);
00643  }
00644  if(burn_drive_get_drive_role(d) != 1)
00645    return(1);
00646  return(burn_disc_track_lba_nwa(d, opts, trackno, lba, nwa));
00647 }

void isoburn_disc_write ( struct burn_write_opts *  o,
struct burn_disc *  disc 
)

Start writing of the new session.

This call is asynchrounous. I.e. it returns quite soon and the progress has to be watched by a loop with call burn_drive_get_status() until BURN_DRIVE_IDLE is returned. Wrapper for: burn_disc_write()

Since:
0.1.0
Parameters:
o Options which control the burn process. See burnwrite_opts_*() in libburn.h.
disc Disc object created either by isoburn_prepare_disc() or by isoburn_prepare_new_image().

Definition at line 667 of file burn_wrap.c.

References isoburn::emulation_mode, isoburn_find_emulator(), isoburn_is_intermediate_dvd_rw(), isoburn_msgs_submit(), isoburn::nwa, isoburn::truncate, and isoburn::wrote_well.

00668 {
00669  int ret;
00670  off_t nwa= 0;
00671  struct isoburn *o;
00672  struct burn_drive *drive;
00673  char reasons[BURN_REASONS_LEN],msg[160+BURN_REASONS_LEN];
00674  char adr[BURN_DRIVE_ADR_LEN];
00675  enum burn_write_types write_type;
00676  struct stat stbuf;
00677 
00678  drive= burn_write_opts_get_drive(opts);
00679  ret= isoburn_find_emulator(&o, drive, 0);
00680  if(ret<0)
00681    return;
00682  if(o!=NULL) {
00683    o->wrote_well= -1;
00684    if(o->emulation_mode!=0) {
00685      burn_write_opts_set_multi(opts, 0);
00686      if(o->emulation_mode>0 && o->nwa >= 0) {
00687        nwa= o->nwa;
00688 
00689        /* This caters for unwritten formatted DVD-RW. They need to be written
00690           sequentially on the first use. Only written areas are random access.
00691           If the first session is not written to LBA 0, then re-opening of
00692           formatting and padding is needed. 
00693           This can be done. But when the track gets closed after padding,
00694           this lasts a long time. There is a high risk that an app will not
00695           poll the message queue while waiting for  isoburn_disc_write()  to
00696           return. The pacifier loop usually happens only afterwards.
00697           So automatic formatting might cause a nervous clueless user.
00698        */
00699        ret= isoburn_is_intermediate_dvd_rw(drive, 0);
00700        if(ret>0 && nwa>0 && nwa <= o->zero_nwa) {
00701          /* actually this should not happen since such media get recognized
00702             by isoburn_welcome_media and o->zero_nwa gets set to 0
00703          */
00704          sprintf(msg,
00705         "DVD-RW insufficiently formatted. (Intermediate State, size unknown)");
00706          isoburn_msgs_submit(o, 0x00060000, msg, 0, "FAILURE", 0);
00707          sprintf(msg,
00708                 "It might help to first deformat it and then format it again");
00709          isoburn_msgs_submit(o, 0x00060000, msg, 0, "HINT", 0);
00710          burn_drive_cancel(drive); /* mark run as failure */
00711          return;
00712        }
00713        /* end of DVD-RW oriented check */
00714 
00715        burn_write_opts_set_start_byte(opts, nwa * (off_t) 2048);
00716      }
00717    }
00718  }
00719 
00720  write_type= burn_write_opts_auto_write_type(opts, disc, reasons, 0);
00721  if (write_type == BURN_WRITE_NONE) {
00722     sprintf(msg, "Failed to find a suitable write mode:\n%s", reasons);
00723     isoburn_msgs_submit(o, 0x00060000, msg, 0, "FAILURE", 0);
00724     if(o!=NULL)
00725       o->wrote_well= 0;
00726     /* To cause a negative reply with burn_drive_wrote_well() */
00727     burn_drive_cancel(drive);
00728     return;
00729  }
00730 
00731  sprintf(reasons, "%d", (int) write_type);
00732  sprintf(msg, "Write_type = %s\n",
00733               (write_type == BURN_WRITE_SAO ? "SAO" :
00734               (write_type == BURN_WRITE_TAO ? "TAO" : reasons)));
00735  isoburn_msgs_submit(o, 0x00060000, msg, 0, "DEBUG", 0);
00736 
00737 #ifdef Hardcoded_cd_rW
00738  /* <<< A70929 : hardcoded CD-RW with fabricated -msinfo */
00739  fprintf(stderr, "Setting write address to LBA %d\n", Hardcoded_cd_rw_nwA);
00740  burn_write_opts_set_start_byte(opts,
00741                  ((off_t) Hardcoded_cd_rw_nwA) * (off_t) 2048);
00742 #endif
00743 
00744  if(o->truncate) {
00745    ret= burn_drive_get_drive_role(drive);
00746    if(ret==2) {
00747      ret= burn_drive_d_get_adr(drive, adr);
00748      if(ret>0) {
00749        ret= lstat(adr, &stbuf);
00750        if(ret!=-1)
00751          if(S_ISREG(stbuf.st_mode))
00752            truncate(adr, nwa * (off_t) 2048);
00753      }
00754    }
00755  }
00756 
00757  burn_disc_write(opts, disc);
00758 }

int isoburn_drive_aquire ( struct burn_drive_info *  drive_infos[],
char *  adr,
int  flag 
)

Aquire a target drive by its filesystem path resp.

Parameters:
flag bit0= load bit1= regard overwriteable media as blank bit2= if the drive is a regular disk file: truncate it to the write start address bit3= if the drive reports a -ROM profile then try to read table of content by scanning for ISO image headers. (depending on media type and drive state this might help or it might make the resulting toc even worse) bit4= do not emulate TOC on overwriteable media bit5= ignore ACL from external filesystems bit6= ignore POSIX Extended Attributes from external filesystems

Definition at line 391 of file burn_wrap.c.

References isoburn::drive, isoburn_destroy(), isoburn_find_emulator(), isoburn_welcome_media(), and isoburn::truncate.

Referenced by isoburn_drive_scan_and_grab().

00393 {
00394  int ret, drive_grabbed= 0;
00395  struct isoburn *o= NULL;
00396 
00397 #ifndef NIX
00398 
00399 /* <<< should be obsolete by new drive addressing of libburn-0.5.2 */
00400 /* >>> but helps with kernel 2.4 to use /dev/sr */
00401 
00402  int conv_ret;
00403  char libburn_drive_adr[BURN_DRIVE_ADR_LEN];
00404 
00405  conv_ret= burn_drive_convert_fs_adr(adr, libburn_drive_adr);
00406  if(conv_ret<=0)
00407    strcpy(libburn_drive_adr, adr);
00408  ret= burn_drive_scan_and_grab(drive_infos, libburn_drive_adr, flag&1);
00409 
00410 #else
00411 
00412  ret= burn_drive_scan_and_grab(drive_infos, adr, flag & 1);
00413 
00414 #endif /* ! NIX */
00415 
00416  if(ret<=0)
00417    goto ex;
00418  drive_grabbed= 1;
00419  ret= isoburn_welcome_media(&o, (*drive_infos)[0].drive,
00420                             (flag & (8 | 16 | 32 | 64)) | !!(flag&2));
00421  if(ret<=0)
00422    goto ex;
00423 
00424  if(flag&4) {
00425    ret= isoburn_find_emulator(&o, (*drive_infos)[0].drive, 0);
00426    if(ret>0 && o!=NULL)
00427      o->truncate= 1;
00428  }
00429 
00430  ret= 1;
00431 ex:
00432  if(ret<=0) {
00433    if(drive_grabbed)
00434      burn_drive_release((*drive_infos)[0].drive, 0);
00435    isoburn_destroy(&o, 0);
00436  }
00437  return(ret);
00438 }

int isoburn_drive_grab ( struct burn_drive *  drive,
int  load 
)

Aquire a drive from the burn_drive_info[] array which was obtained by a previous call of burn_drive_scan().

Wrapper for: burn_drive_grab()

Since:
0.1.0
Parameters:
drive The drive to grab. E.g. drive_infos[1].drive . Call isoburn_drive_release(drive) when it it no longer needed.
load 1 attempt to load the disc tray. 0 no attempt, rather failure.
Returns:
1 success, <=0 failure

Definition at line 451 of file burn_wrap.c.

References isoburn_destroy(), and isoburn_welcome_media().

00452 {
00453  int ret;
00454  struct isoburn *o= NULL;
00455 
00456  ret= burn_drive_grab(drive, load);
00457  if(ret<=0)
00458    goto ex;
00459  ret= isoburn_welcome_media(&o, drive, 0);
00460  if(ret<=0)
00461    goto ex;
00462  
00463  ret= 1;
00464 ex:
00465  if(ret<=0)
00466    isoburn_destroy(&o,0);
00467  return(ret);
00468 }

void isoburn_drive_release ( struct burn_drive *  drive,
int  eject 
)

Release an aquired drive.

Wrapper for: burn_drive_release()

Since:
0.1.0
Parameters:
drive The drive to be released
eject 1= eject media from drive , 0= do not eject

Definition at line 761 of file burn_wrap.c.

References isoburn_destroy(), and isoburn_find_emulator().

00762 {
00763  int ret;
00764  struct isoburn *o;
00765 
00766  ret= isoburn_find_emulator(&o, drive, 0);
00767  if(ret<0)
00768    return;
00769  if(o!=NULL) {
00770    isoburn_destroy(&o, 0);
00771  }
00772  burn_drive_release(drive, eject);
00773 }

int isoburn_drive_scan_and_grab ( struct burn_drive_info *  drive_infos[],
char *  adr,
int  load 
)

Aquire a target drive by its filesystem path resp.

libburn persistent address. Wrapper for: burn_drive_scan_and_grab()

Since:
0.1.0
Parameters:
drive_infos On success returns a one element array with the drive (cdrom/burner). Thus use with driveno 0 only. On failure the array has no valid elements at all. The returned array should be freed via burn_drive_info_free() when the drive is no longer needed. But before this is done one has to call isoburn_drive_release(drive_infos[0].drive).
adr The persistent address of the desired drive.
load 1 attempt to load the disc tray. 0 no attempt,rather failure.
Returns:
1 = success , 0 = drive not found , <0 = other error

Definition at line 441 of file burn_wrap.c.

References isoburn_drive_aquire().

00443 {
00444  int ret;
00445 
00446  ret= isoburn_drive_aquire(drive_infos, adr, !!load);
00447  return(ret);
00448 }

int isoburn_drive_set_msgs_submit ( struct burn_drive *  d,
int(*)(void *handle, int error_code, char msg_text[], int os_errno, char severity[], int flag)  msgs_submit,
void *  submit_handle,
int  submit_flag,
int  flag 
)

Attach to a drive an application provided method for immediate delivery of messages.

If no method is set or if the method is set to NULL then libisoburn delivers messages of the drive through the global msgs_submit() method set by isoburn_set_msgs_submiti() or by the message queue of libburn.

Since:
0.2.0
Parameters:
d The drive to which this function, handle and flag shall apply
msgs_submit The function call which implements the method
submit_handle Handle to be used as first argument of msgs_submit
submit_flag Flag to be used as last argument of msgs_submit
flag Unused yet, submit 0

Definition at line 1500 of file burn_wrap.c.

References isoburn_find_emulator(), isoburn::msgs_submit, isoburn::msgs_submit_flag, and isoburn::msgs_submit_handle.

01505 {
01506  struct isoburn *o;
01507  int ret;
01508 
01509  ret= isoburn_find_emulator(&o, d, 0);
01510  if(ret<0 || o==NULL)
01511    return(-1);
01512  o->msgs_submit= msgs_submit;
01513  o->msgs_submit_handle= submit_handle;
01514  o->msgs_submit_flag= submit_flag;
01515  return(1);
01516 }

int isoburn_drive_wrote_well ( struct burn_drive *  d  ) 

Inquire whether the most recent write run was successful.

Wrapper for: burn_drive_wrote_well()

Since:
0.1.0
Parameters:
d The drive to inquire
Returns:
1=burn seems to have went well, 0=burn failed

Definition at line 852 of file burn_wrap.c.

References isoburn_find_emulator(), and isoburn::wrote_well.

00853 {
00854  int ret;
00855  struct isoburn *o;
00856  
00857  ret= isoburn_find_emulator(&o, d, 0);
00858  if(ret<0)
00859    return(-1);
00860  if(o!=NULL)
00861    if(o->wrote_well>=0)
00862      return(o->wrote_well);
00863  ret= burn_drive_wrote_well(d);
00864  return ret;
00865 }

int isoburn_emulate_toc ( struct burn_drive *  d,
int  flag 
) [static]

Definition at line 1084 of file burn_wrap.c.

References isoburn::emulation_mode, isoburn_find_emulator(), isoburn_make_toc_entry(), isoburn_msgs_submit(), isoburn_read_iso_head(), isoburn_toc_entry_destroy(), Libisoburn_nwa_alignemenT, Libisoburn_overwriteable_starT, Libisoburn_toc_scan_max_gaP, isoburn::toc, and isoburn_toc_entry::track_blocks.

Referenced by isoburn_welcome_media().

01085 {
01086  int ret, image_size= 0, lba, track_blocks, session_count= 0, read_flag= 0;
01087  int scan_start= 0, scan_count= 0, probe_minus_16= 0, growisofs_nwa;
01088  int with_enclosure= 0;
01089  struct isoburn *o;
01090  char msg[160], size_text[80], *sev;
01091  time_t start_time, last_pacifier, now;
01092  
01093  /* is the media emulated multi-session ? */
01094  ret= isoburn_find_emulator(&o, d, 0);
01095  if(ret<0)
01096    return(-1);
01097  if(o==NULL)
01098    return(-1);
01099  if(o->emulation_mode<=0 && !(flag&1))
01100    return(0);
01101 
01102  start_time= last_pacifier= time(NULL);
01103  lba= 0;
01104  if(!(flag&2)) {
01105    ret= isoburn_read_iso_head(d, lba, &image_size, NULL, 0);
01106    if(ret<=0)
01107      {ret= 0; goto failure;}
01108    lba= Libisoburn_overwriteable_starT;
01109    with_enclosure= 1;
01110  }
01111  while(lba<image_size || (flag&2)) {
01112    now= time(NULL);
01113    if(now - last_pacifier >= 5) {
01114      last_pacifier= now;
01115      if(scan_count>=10*512)
01116        sprintf(size_text, "%.f MB", ((double) scan_count) / 512.0);
01117      else
01118        sprintf(size_text, "%.f kB", 2 * (double) scan_count);
01119      sprintf(msg, "Found %d ISO sessions by scanning %s in %.f seconds",
01120              session_count, size_text, (double) (now - start_time));
01121      isoburn_msgs_submit(o, 0x00060000, msg, 0, "UPDATE", 0);
01122    }
01123    read_flag= 0;
01124    if(flag&2)
01125      read_flag|= (1<<15)|((session_count>0)<<14);
01126    else {
01127 
01128      /* growisofs aligns to 16 rather than 32. Overwriteable TOC emulation
01129         relies on not accidentially seeing inter-session trash data.
01130         But one can safely access 16 blocks earlier because a xorriso header
01131         would have overwritten with the unused 16 blocks at its start.
01132         If libisoburn alignment would increase, then this would not be
01133         possible any more.
01134      */
01135 
01136      if(probe_minus_16)
01137        read_flag|= (1<<14);
01138      probe_minus_16= 0;
01139    }
01140 
01141    ret= isoburn_read_iso_head(d, lba, &track_blocks, NULL, read_flag);
01142    if(ret<=0) {
01143      if(session_count>0) {
01144        if(flag&2) {
01145          if(ret==0) {
01146            /* try at next 64 k block (check both 32 k halves) */
01147            lba+= 32;
01148            scan_count+= 32;
01149            if(lba-scan_start <= Libisoburn_toc_scan_max_gaP)
01150  continue;
01151          }
01152  break;
01153        }
01154        sprintf(msg,
01155                "Chain of ISO session headers broken at #%d, LBA %ds",
01156                session_count+1, lba);
01157        isoburn_msgs_submit(o, 0x00060000, msg, 0, "WARNING", 0);
01158 
01159        if(with_enclosure) {
01160          ret= isoburn_make_toc_entry(o, &session_count, 0, image_size, 0);
01161          if(ret<=0)
01162            goto failure;
01163        }
01164  break; /* do not return failure */
01165 
01166      }
01167      {ret= 0; goto failure;}
01168    }
01169    if(ret==2) /* ISO header was found in first half block */
01170      lba-= 16;
01171 
01172    ret= isoburn_make_toc_entry(o, &session_count, lba, track_blocks, 0);
01173    if(ret<=0)
01174      goto failure;
01175    lba+= track_blocks;
01176    scan_count+= 32;
01177 
01178    /* growisofs aligns to 16 rather than 32 */
01179    growisofs_nwa= lba;
01180    if(growisofs_nwa % 16)
01181      growisofs_nwa+= 16 - (growisofs_nwa % 16);
01182    if(lba % Libisoburn_nwa_alignemenT)
01183      lba+= Libisoburn_nwa_alignemenT - (lba % Libisoburn_nwa_alignemenT);
01184    scan_start= lba;
01185    if(lba - growisofs_nwa == 16)
01186      probe_minus_16= 1;
01187  }
01188  if(last_pacifier != start_time)
01189    sev= "UPDATE";
01190  else
01191    sev= "DEBUG";
01192  now= time(NULL);
01193  if(scan_count>=10*512)
01194    sprintf(size_text, "%.f MB", ((double) scan_count) / 512.0);
01195  else
01196    sprintf(size_text, "%.f kB", 2 * (double) scan_count);
01197  sprintf(msg, "Found %d ISO sessions by scanning %s in %.f seconds",
01198          session_count, size_text, (double) (now - start_time));
01199  isoburn_msgs_submit(o, 0x00060000, msg, 0, sev, 0);
01200  return(1);
01201 failure:;
01202  isoburn_toc_entry_destroy(&(o->toc), 1);
01203  if(with_enclosure && o->emulation_mode == 1) {
01204    session_count= 0;
01205    ret= isoburn_make_toc_entry(o, &session_count, 0, image_size, 0);
01206  }
01207  return(ret);
01208 }

int isoburn_find_emulator ( struct isoburn **  pt,
struct burn_drive *  drive,
int  flag 
)

Retrieve media emulation and eventual isoburn emulator of drive.

Get an eventual isoburn object which is wrapped around the drive.

Returns:
-1 unsuitable media, 0 generic media, 1 emulated media.

Definition at line 474 of file burn_wrap.c.

References isoburn_find_by_drive(), and isoburn_msgs_submit().

Referenced by isoburn_activate_session(), isoburn_attach_image(), isoburn_cancel_prepared_write(), isoburn_disc_available_space(), isoburn_disc_erasable(), isoburn_disc_erase(), isoburn_disc_get_msc1(), isoburn_disc_get_status(), isoburn_disc_track_lba_nwa(), isoburn_disc_write(), isoburn_drive_aquire(), isoburn_drive_release(), isoburn_drive_set_msgs_submit(), isoburn_drive_wrote_well(), isoburn_emulate_toc(), isoburn_get_attached_image(), isoburn_get_fifo_status(), isoburn_get_min_start_byte(), isoburn_get_mount_params(), isoburn_needs_emulation(), isoburn_prepare_blind_grow(), isoburn_prepare_disc_aux(), isoburn_read_image(), isoburn_set_msc1(), isoburn_set_read_pacifier(), and isoburn_toc_drive_get_disc().

00476 {
00477  int ret;
00478 
00479  ret= isoburn_find_by_drive(pt, drive, 0);
00480  if(ret<=0)
00481    return(0);
00482  if((*pt)->emulation_mode==-1) {
00483    isoburn_msgs_submit(*pt, 0x00060000,
00484                     "Unsuitable drive and media state", 0, "FAILURE", 0);
00485    return(-1);
00486  }
00487  if((*pt)->emulation_mode==0)
00488    return(0);
00489  return(1);
00490 } 

void isoburn_finish ( void   ) 

Shutdown all three libraries.

Wrapper for : iso_finish() and burn_finish().

Since:
0.1.0

Definition at line 776 of file burn_wrap.c.

References isoburn_destroy_all().

00777 {
00778  isoburn_destroy_all(&isoburn_list_start, 0);
00779  burn_finish();
00780  iso_finish();
00781 }

int isoburn_get_fifo_status ( struct burn_drive *  d,
int *  size,
int *  free_bytes,
char **  status_text 
)

Inquire state and fill parameters of the fifo which is attached to the emerging track.

This should be done in the pacifier loop while isoburn_disc_write() or burn_disc_write() are active. This works only with drives obtained by isoburn_drive_scan_and_grab() or isoburn_drive_grab(). If isoburn_prepare_new_image() was used, then parameter out_drive must have announced the track output drive. Hint: If only burn_write_opts and not burn_drive is known, then the drive can be obtained by burn_write_opts_get_drive().

Since:
0.1.0
Parameters:
d The drive to which the track with the fifo gets burned.
size The total size of the fifo
free_bytes The current free capacity of the fifo
status_text Returns a pointer to a constant text, see below
Returns:
<0 reply invalid, >=0 fifo status code: bit0+1=input status, bit2=consumption status, i.e: 0="standby" : data processing not started yet 1="active" : input and consumption are active 2="ending" : input has ended without error 3="failing" : input had error and ended, 4="unused" : ( consumption has ended before processing start ) 5="abandoned" : consumption has ended prematurely 6="ended" : consumption has ended without input error 7="aborted" : consumption has ended after input error

Definition at line 868 of file burn_wrap.c.

References isoburn::iso_source, and isoburn_find_emulator().

00870 {
00871  int ret;
00872  struct isoburn *o;
00873  size_t hsize= 0, hfree_bytes= 0;
00874 
00875  ret= isoburn_find_emulator(&o, d, 0);
00876  if(ret<0)
00877    return(-1);
00878 
00879  if(o==NULL)
00880    return(-1);
00881  if(o->iso_source==NULL)
00882    return(-1);
00883  ret= iso_ring_buffer_get_status(o->iso_source, &hsize, &hfree_bytes);
00884  if(hsize > 1024*1024*1024)
00885    *size= 1024*1024*1024;
00886  else
00887    *size= hsize;
00888  if(hfree_bytes > 1024*1024*1024)
00889    *free_bytes= 1024*1024*1024;
00890  else
00891    *free_bytes= hfree_bytes;
00892  *status_text= "";
00893  if(ret==0)
00894    *status_text= "standby";
00895  else if(ret==1)
00896    *status_text= "active";
00897  else if(ret==2)
00898    *status_text= "ending";
00899  else if(ret==3)
00900    *status_text= "failing";
00901  else if(ret==4)
00902    *status_text= "unused";
00903  else if(ret==5)
00904    *status_text= "abandoned";
00905  else if(ret==6)
00906    *status_text= "ended";
00907  else if(ret==7)
00908    *status_text= "aborted";
00909  return(ret);
00910 }

int isoburn_get_min_start_byte ( struct burn_drive *  d,
off_t *  start_byte,
int  flag 
)

Obtain the size which was attributed to an emulated appendable on actually overwriteable media.

This value is supposed to be <= 2048 * nwa as of isoburn_disc_track_lba_nwa().

Since:
0.1.0
Parameters:
drive The drive holding the media.
start_byte The reply value counted in bytes, not in sectors.
flag Unused yet. Submit 0.
Returns:
1=stat_byte is valid, 0=not an emulated appendable, -1=error

Definition at line 834 of file burn_wrap.c.

References isoburn_find_emulator(), and isoburn::min_start_byte.

00836 {
00837  int ret;
00838  struct isoburn *o;
00839 
00840  ret= isoburn_find_emulator(&o, d, 0);
00841  if(ret<0)
00842    return(-1);
00843  if(ret==0) 
00844    return(0);
00845  *start_byte= o->min_start_byte;
00846  if(o->min_start_byte<=0)
00847    return(0);
00848  return(1);
00849 }

int isoburn_get_mount_params ( struct burn_drive *  d,
int  adr_mode,
char *  adr_value,
int *  lba,
int *  track,
int *  session,
char  volid[33],
int  flag 
)

Try to convert the given entity address into various entity addresses which would describe it.

Note: Sessions and tracks are counted beginning with 1, not with 0.

Since:
0.3.2
Parameters:
drive The drive where msc1 is to be set
adr_mode Determines how to interpret the input adr_value. If adr_value shall represent a number then decimal ASCII digits are expected. 0= start lba of last session in TOC, ignore adr_value 1= start lba of session number given by adr_value 2= start lba of track given number by adr_value 3= adr_value itself is the lba to be used 4= start lba of last session with volume id given by adr_value
adr_value A string describing the value to be eventually used.
lba returns the block address of the entity, -1 means invalid
track returns the track number of the entity, -1 means invalid
session returns the session number of the entity, -1 means invalid
volid returns the volume id of the entity if it is a ISO session
flag Bitfield for control purposes. bit2= with adr_mode 4: use adr_value as regular expression
Returns:
<=0 error , 1 ok, ISO session, 2 ok, not an ISO session

Definition at line 1652 of file burn_wrap.c.

References isoburn_toc_disc::disc, isoburn::fabricated_msc1, isoburn_find_emulator(), isoburn_get_track_lba(), isoburn_read_iso_head(), isoburn_set_msc1(), isoburn_toc_disc_get_sessions(), isoburn_toc_drive_get_disc(), and isoburn_toc_session_get_tracks().

01656 {
01657  int msc1_mem, ret, total_tracks, num_sessions, num_tracks, i, j, track_lba;
01658  int size, is_iso= 0;
01659  struct isoburn *o;
01660  struct isoburn_toc_disc *disc= NULL;
01661  struct isoburn_toc_session **sessions= NULL;
01662  struct isoburn_toc_track **tracks= NULL;
01663 
01664  *lba= *track= *session= -1;
01665  volid[0]= 0;
01666  ret= isoburn_find_emulator(&o, d, 0);
01667  if(ret < 0 || o == NULL)
01668    return(-1);
01669  msc1_mem= o->fabricated_msc1;
01670  ret= isoburn_set_msc1(d, adr_mode, adr_value, 2 | (flag & 4));
01671  if(ret <= 0)
01672    return(ret);
01673  *lba= o->fabricated_msc1;
01674 
01675  disc= isoburn_toc_drive_get_disc(d);
01676  if(disc==NULL) 
01677    {ret= -1; goto ex;} /* cannot happen because checked by isoburn_set_msc1 */
01678  sessions= isoburn_toc_disc_get_sessions(disc, &num_sessions);
01679  if(sessions==NULL || num_sessions<=0)
01680    {ret= -1; goto ex;} /* cannot happen because checked by isoburn_set_msc1 */
01681  total_tracks= 0;
01682  for(i=0; i<num_sessions && *session < 0; i++) {
01683    tracks= isoburn_toc_session_get_tracks(sessions[i], &num_tracks);
01684    if(tracks==NULL)
01685  continue;
01686    for(j= 0; j<num_tracks && *track < 0; j++) {
01687      total_tracks++;
01688      isoburn_get_track_lba(tracks[j], &track_lba, 0);
01689      if(track_lba == *lba) {
01690        *track= total_tracks;
01691        *session= i + 1;
01692      }
01693    }
01694  }
01695  ret= isoburn_read_iso_head(d, *lba, &size, volid, 1);
01696  if(ret <= 0)
01697    volid[0]= 0;
01698  else
01699    is_iso= 1;
01700 
01701 ex:;
01702  o->fabricated_msc1= msc1_mem;
01703  return(2 - is_iso); 
01704 }

int isoburn_get_msc2 ( struct isoburn o,
struct burn_write_opts *  opts,
int *  msc2,
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().

Parameters:
o The isoburn object to be inquired
opts If not NULL: write parameters to be set on drive before query
msc2 The value to be used with iso_write_opts_set_ms_block()
flag unused yet
Returns:
<=0 is failure , >0 success

Definition at line 650 of file burn_wrap.c.

References isoburn::drive, isoburn::fabricated_msc2, isoburn_disc_track_lba_nwa(), and isoburn::nwa.

Referenced by isoburn_prepare_disc_aux().

00652 {
00653  int ret, lba, nwa;
00654 
00655  if(o->fabricated_msc2>=0)
00656    *msc2= o->fabricated_msc2;
00657  else {
00658    ret= isoburn_disc_track_lba_nwa(o->drive, opts, 0, &lba, &nwa);
00659    if(ret<=0)
00660      return(ret);
00661    *msc2= nwa;
00662  }
00663  return(1);
00664 }

int isoburn_get_track_lba ( struct isoburn_toc_track track,
int *  lba,
int  flag 
)

Definition at line 1487 of file burn_wrap.c.

References isoburn_toc_track_get_entry().

Referenced by isoburn_get_mount_params(), and isoburn_set_msc1().

01488 {
01489  struct burn_toc_entry entry;
01490 
01491  isoburn_toc_track_get_entry(track, &entry);
01492  if (entry.extensions_valid & 1)
01493    *lba= entry.start_lba;
01494  else
01495    *lba= burn_msf_to_lba(entry.pmin, entry.psec, entry.pframe);
01496  return(1);
01497 }

int isoburn_initialize ( char  msg[1024],
int  flag 
)

Overview.

libisoburn is a frontend for libraries libburn and libisofs which enables creation and expansion of ISO-9660 filesystems on all CD/DVD media supported by libburn. This includes media like DVD+RW, which do not support multi-session management on media level and even plain disk files or block devices.

The price for that is thorough specialization on data files in ISO-9660 filesystem images. So libisoburn is not suitable for audio (CD-DA) or any other CD layout which does not entirely consist of ISO-9660 sessions.

Connector functions

libisofs and libburn do not depend on each other but share some interfaces by which they can cooperate. libisoburn establishes the connection between both modules by creating the necessary interface objects and attaching them to the right places.

Wrapper functions

The priciple of this frontend is that you may use any call of libisofs or libburn unless it has a isoburn_*() wrapper listed in the following function documentation.

E.g. call isoburn_initialize() rather than iso_init(); burn_initialize(); and call isoburn_drive_scan_and_grab() rather than burn_drive_scan_and_grab(). But you may call burn_disc_get_profile() directly if you want to display the media type.

The wrappers will transparently provide the necessary emulations which are appropriate for particular target drives and media states. To learn about them you have to read both API descriptions: the one of the wrapper and the one of the underlying libburn or libisofs call.

Macros BURN_* and functions burn_*() are documented in <libburn/libburn.h> Macros ISO_* and functions iso_*() are documented in <libisofs/libisofs.h>

Usage model

There may be an input drive and an output drive. Either of them may be missing with the consequence that no reading resp. writing is possible. Both drive roles can be fulfilled by the same drive.

Input can be a random access readable libburn drive: optical media, regular files, block devices. Output can be any writeable libburn drive: writeable optical media in burner, writeable file objects (no directories).

libburn demands rw-permissions to drive device file resp. file object.

If the input drive provides a suitable ISO RockRidge image, then its tree may be loaded into memory and can then be manipulated by libisofs API calls. The loading is done by isoburn_read_image() under control of struct isoburn_read_opts which the application obtains from libisoburn and manipulates by the family of isoburn_ropt_set_*() functions.

Writing of result images is controlled by libisofs related parameters in a struct isoburn_imgen_opts which the application obtains from libisoburn and manipulates by the family of isoburn_igopt_set_*() functions.

All multi-session aspects are handled by libisoburn according to these settings. The application does not have to analyze media state and write job parameters. It rather states its desires which libisoburn tries to fulfill, or else will refuse to start the write run.

Setup for Growing, Modifying or Blind Growing

The connector function family offers alternative API calls for performing the setup for several alternative image generation strategies.

Growing: If input and output drive are the same, then isoburn_prepare_disc() is to be used. It will lead to an add-on session on appendable or overwriteable media with existing ISO image. With blank media it will produce a first session.

Modifying: If the output drive is not the input drive, and if it bears blank media or overwriteable without a valid ISO image, then one may produce a consolidated image with old and new data. This will copy file data from an eventual input drive with valid image, add any newly introduced data from the local filesystem, and produce a first session on output media. To prepare for such an image generation run, use isoburn_prepare_new_image().

Blind Growing: This method reads the old image from one drive and writes the add-on session to a different drive. That output drive is nevertheless supposed to finally lead to the same media from where the session was loaded. Usually it will be stdio:/dev/fd/1 (i.e. stdout) being piped into some burn program like with this classic gesture: mkisofs -M $dev -C $msc1,$nwa | cdrecord -waiti dev=$dev Blind growing is prepared by the call isoburn_prepare_blind_grow(). The input drive should be released immediately after this call in order to allow the consumer of the output stream to access that drive for writing.

After either of these setups, some peripheral libburn drive parameter settings like burn_write_opts_set_simulate(), burn_write_opts_set_multi(), burn_drive_set_speed(), burn_write_opts_set_underrun_proof() should be made. Do not set the write mode. It will be chosen by libisoburn so it matches job and media state.

Writing the image

Then one may start image generation and write threads by isoburn_disc_write(). Progress may be watched at the output drive by burn_drive_get_status() and isoburn_get_fifo_status().

At some time, the output drive will be BURN_DRIVE_IDLE indicating that writing has ended. One should inquire isoburn_drive_wrote_well() to learn about overall success.

Finally one must call isoburn_activate_session() which will complete any eventual multi-session emulation.

Application Constraints

Applications shall include libisofs/libisofs.h , libburn/libburn.h and this file itself: libisoburn/libisoburn.h . They shall link with -lisofs -lburn -lisoburn or with the .o files emerging from building those libraries from their sources.

Applications must use 64 bit off_t, e.g. on 32-bit Linux by defining define _LARGEFILE_SOURCE define _FILE_OFFSET_BITS 64 or take special precautions to interface with the library by 64 bit integers where above .h files prescribe off_t. Not to use 64 bit file i/o will keep the application from producing and processing ISO images of more than 2 GB size. Initialize libisoburn, libisofs and libburn. Wrapper for : iso_init() and burn_initialize()

Since:
0.1.0
Parameters:
msg A character array for eventual messages (e.g. with errors)
flag Bitfield for control purposes (unused yet, submit 0)
Returns:
1 indicates success, 0 is failure

Definition at line 65 of file burn_wrap.c.

References isoburn_destroy_all(), isoburn_libisofs_req_major, isoburn_libisofs_req_micro, isoburn_libisofs_req_minor, and isoburn_version().

00066 {
00067  int major, minor, micro, bad_match= 0;
00068 
00069 
00070 /* First two ugly compile time checks for header version compatibility.
00071    If everthing matches, then they produce no C code. In case of mismatch,
00072    intentionally faulty C code will be inserted.
00073 */
00074 
00075 #ifdef iso_lib_header_version_major
00076 /* The minimum requirement of libisoburn towards the libisofs header
00077    at compile time is defined in libisoburn/libisoburn.h :
00078      isoburn_libisofs_req_major
00079      isoburn_libisofs_req_minor
00080      isoburn_libisofs_req_micro
00081    It gets compared against the version macros in libisofs/libisofs.h :
00082      iso_lib_header_version_major
00083      iso_lib_header_version_minor
00084      iso_lib_header_version_micro
00085    If the header is too old then the following code shall cause failure of
00086    libisoburn compilation rather than to allow production of a program with
00087    unpredictable bugs or memory corruption.
00088    The compiler messages supposed to appear in this case are:
00089       error: 'LIBISOFS_MISCONFIGURATION' undeclared (first use in this function)
00090       error: 'INTENTIONAL_ABORT_OF_COMPILATION__HEADERFILE_libisofs_dot_h_TOO_OLD__SEE_libisoburn_dot_h_AND_burn_wrap_dot_h' undeclared (first use in this function)
00091       error: 'LIBISOFS_MISCONFIGURATION_' undeclared (first use in this function)
00092 */
00093 /* The indendation is an advise of man gcc to help old compilers ignoring */
00094  #if isoburn_libisofs_req_major > iso_lib_header_version_major
00095  #define Isoburn_libisofs_dot_h_too_olD 1
00096  #endif
00097  #if isoburn_libisofs_req_major == iso_lib_header_version_major && isoburn_libisofs_req_minor > iso_lib_header_version_minor
00098  #define Isoburn_libisofs_dot_h_too_olD 1
00099  #endif
00100  #if isoburn_libisofs_req_minor == iso_lib_header_version_minor && isoburn_libisofs_req_micro > iso_lib_header_version_micro
00101  #define Isoburn_libisofs_dot_h_too_olD 1
00102  #endif
00103 
00104 #ifdef Isoburn_libisofs_dot_h_too_olD
00105 LIBISOFS_MISCONFIGURATION = 0;
00106 INTENTIONAL_ABORT_OF_COMPILATION__HEADERFILE_libisofs_dot_h_TOO_OLD__SEE_libisoburn_dot_h_AND_burn_wrap_dot_h = 0;
00107 LIBISOFS_MISCONFIGURATION_ = 0;
00108 #endif
00109 
00110 #endif /* iso_lib_header_version_major */
00111 
00112 /* The minimum requirement of libisoburn towards the libburn header
00113    at compile time is defined in libisoburn/libisoburn.h :
00114      isoburn_libburn_req_major
00115      isoburn_libburn_req_minor
00116      isoburn_libburn_req_micro
00117    It gets compared against the version macros in libburn/libburn.h :
00118      burn_header_version_major
00119      burn_header_version_minor
00120      burn_header_version_micro
00121    If the header is too old then the following code shall cause failure of
00122    cdrskin compilation rather than to allow production of a program with
00123    unpredictable bugs or memory corruption.
00124    The compiler messages supposed to appear in this case are:
00125       error: 'LIBBURN_MISCONFIGURATION' undeclared (first use in this function)
00126       error: 'INTENTIONAL_ABORT_OF_COMPILATION__HEADERFILE_libburn_dot_h_TOO_OLD__SEE_libisoburn_dot_h_and_burn_wrap_dot_h' undeclared (first use in this function)
00127       error: 'LIBBURN_MISCONFIGURATION_' undeclared (first use in this function)
00128 */
00129 
00130 /* The indendation is an advise of man gcc to help old compilers ignoring */
00131  #if isoburn_libburn_req_major > burn_header_version_major
00132  #define Isoburn_libburn_dot_h_too_olD 1
00133  #endif
00134  #if isoburn_libburn_req_major == burn_header_version_major && isoburn_libburn_req_minor > burn_header_version_minor
00135  #define Isoburn_libburn_dot_h_too_olD 1
00136  #endif
00137  #if isoburn_libburn_req_minor == burn_header_version_minor && isoburn_libburn_req_micro > burn_header_version_micro
00138  #define Isoburn_libburn_dot_h_too_olD 1
00139  #endif
00140 
00141 #ifdef Isoburn_libburn_dot_h_too_olD
00142 LIBBURN_MISCONFIGURATION = 0;
00143 INTENTIONAL_ABORT_OF_COMPILATION__HEADERFILE_libburn_dot_h_TOO_OLD__SEE_libisoburn_dot_h_and_burn_wrap_dot_h = 0;
00144 LIBBURN_MISCONFIGURATION_ = 0;
00145 #endif
00146 
00147 /* End of ugly compile time tests (scroll up for explanation) */
00148 
00149 
00150 
00151  msg[0]= 0;
00152  if(iso_init()<0) {
00153    sprintf(msg+strlen(msg), "Cannot initialize libisofs\n");
00154    return(0);
00155  }
00156  iso_lib_version(&major, &minor, &micro);
00157  sprintf(msg+strlen(msg), "libisofs-%d.%d.%d ", major, minor, micro);
00158 #ifdef iso_lib_header_version_major
00159  if(iso_lib_is_compatible(iso_lib_header_version_major,
00160                           iso_lib_header_version_minor,
00161                           iso_lib_header_version_micro)) {
00162    sprintf(msg+strlen(msg), "ok, ");
00163  } else {
00164    sprintf(msg+strlen(msg),"- TOO OLD -, need at least libisofs-%d.%d.%d ,\n",
00165            iso_lib_header_version_major, iso_lib_header_version_minor,
00166            iso_lib_header_version_micro);
00167    bad_match= 1;
00168  }
00169 #else
00170  if(iso_lib_is_compatible(isoburn_libisofs_req_major,
00171                           isoburn_libisofs_req_minor,
00172                           isoburn_libisofs_req_micro)) {
00173    sprintf(msg+strlen(msg), "suspicious, ");
00174  } else {
00175    sprintf(msg+strlen(msg),"- TOO OLD -, need at least libisofs-%d.%d.%d ,\n",
00176            isoburn_libisofs_req_major, isoburn_libisofs_req_minor,
00177            isoburn_libisofs_req_micro);
00178    bad_match= 1;
00179  }
00180 #endif /* ! iso_lib_header_version_major */
00181 
00182  if(!burn_initialize()) {
00183    sprintf(msg+strlen(msg), "Cannot initialize libburn\n");
00184    return(0);
00185  }
00186  burn_version(&major, &minor, &micro);
00187  sprintf(msg+strlen(msg), "libburn-%d.%d.%d ", major, minor, micro);
00188  if(major > burn_header_version_major
00189     || (major == burn_header_version_major
00190         && (minor > burn_header_version_minor
00191             || (minor == burn_header_version_minor
00192                 && micro >= burn_header_version_micro)))) {
00193    sprintf(msg+strlen(msg), "ok, ");
00194  } else {
00195    sprintf(msg+strlen(msg), "- TOO OLD -, need at least libburn-%d.%d.%d ,\n",
00196            burn_header_version_major, burn_header_version_minor,
00197            burn_header_version_micro);
00198    bad_match= 1;
00199  }
00200 
00201  isoburn_version(&major, &minor, &micro);
00202  sprintf(msg+strlen(msg), "for libisoburn-%d.%d.%d", major, minor, micro);
00203  if(bad_match)
00204    return(0);
00205 
00206  isoburn_destroy_all(&isoburn_list_start, 0); /* isoburn_list_start= NULL */
00207  return(1);
00208 }

int isoburn_is_intermediate_dvd_rw ( struct burn_drive *  d,
int  flag 
)

Definition at line 243 of file burn_wrap.c.

References isoburn_disc_get_status().

Referenced by isoburn_disc_write(), and isoburn_welcome_media().

00244 {
00245  int profile, ret= 0, format_status, num_formats;
00246  char profile_name[80];
00247  enum burn_disc_status s;
00248  off_t format_size= -1;
00249  unsigned bl_sas;
00250 
00251  s= isoburn_disc_get_status(d);
00252  ret= burn_disc_get_profile(d, &profile, profile_name);
00253  if(ret>0 && profile==0x13)
00254    ret= burn_disc_get_formats(d, &format_status, &format_size,
00255                               &bl_sas, &num_formats);
00256  if(ret>0 && profile==0x13 && s==BURN_DISC_BLANK &&
00257     format_status==BURN_FORMAT_IS_UNKNOWN)
00258    return(1);
00259  return(0);
00260 }

int isoburn_libburn_req ( int *  major,
int *  minor,
int *  micro 
)

The minimum version of libburn to be used with this version of libisoburn at runtime.

This is checked already in isoburn_initialize() which will refuse on outdated version. So this call is for information purposes after successful startup only.

Since:
0.1.0
Parameters:
major isoburn_libburn_req_major as seen at build time
minor as seen at build time
micro as seen at build time
Returns:
1 success, <=0 might in future become an error indication

Definition at line 222 of file burn_wrap.c.

00223 {
00224  *major= burn_header_version_major;
00225  *minor= burn_header_version_minor;
00226  *micro= burn_header_version_micro;
00227  return(1);
00228 }

int isoburn_libisofs_req ( int *  major,
int *  minor,
int *  micro 
)

The minimum version of libisofs to be used with this version of libisoburn at runtime.

This is checked already in isoburn_initialize() which will refuse on outdated version. So this call is for information purposes after successful startup only.

Since:
0.1.0
Parameters:
major isoburn_libisofs_req_major as seen at build time
minor as seen at build time
micro as seen at build time
Returns:
1 success, <=0 might in future become an error indication

Definition at line 212 of file burn_wrap.c.

00213 {
00214  *major= iso_lib_header_version_major;
00215  *minor= iso_lib_header_version_minor;
00216  *micro= iso_lib_header_version_micro;
00217  return(1);
00218 }

int isoburn_make_toc_entry ( struct isoburn o,
int *  session_count,
int  lba,
int  track_blocks,
int  flag 
)

Definition at line 1056 of file burn_wrap.c.

References isoburn_msgs_submit(), isoburn_toc_entry_new(), isoburn_toc_entry::session, isoburn_toc_entry::start_lba, isoburn::toc, isoburn_toc_entry::track_blocks, and isoburn_toc_entry::track_no.

Referenced by isoburn_emulate_toc().

01058 {
01059  int ret;
01060  struct isoburn_toc_entry *item;
01061 
01062  ret= isoburn_toc_entry_new(&item, o->toc, 0);
01063  if(ret<=0) {
01064    isoburn_msgs_submit(o, 0x00060000,
01065                        "Not enough memory for emulated TOC entry object",
01066                        0, "FATAL", 0);
01067    return(-1);
01068  }
01069  if(o->toc==NULL)
01070    o->toc= item;
01071  (*session_count)++;
01072  item->session= *session_count;
01073  item->track_no= *session_count;
01074  item->start_lba= lba;
01075  item->track_blocks= track_blocks;
01076  return(1);
01077 }

int isoburn_needs_emulation ( struct burn_drive *  drive  ) 

Inquire wether the media needs emulation or would be suitable for generic multi-session via libburn.

Since:
0.1.0
Parameters:
d The drive to inquire
Returns:
0 is generic multi-session 1 is emulated multi-session -1 is not suitable for isoburn

Definition at line 784 of file burn_wrap.c.

References isoburn::emulation_mode, isoburn_disc_get_status(), and isoburn_find_emulator().

00785 {
00786  int ret;
00787  struct isoburn *o;
00788  enum burn_disc_status s;
00789 
00790  s= isoburn_disc_get_status(drive);
00791  if(s!=BURN_DISC_BLANK && s!=BURN_DISC_APPENDABLE)
00792    return(-1);
00793  ret= isoburn_find_emulator(&o, drive, 0);
00794  if(ret<0)
00795    return(-1);
00796  if(ret>0)
00797    if(o->emulation_mode>0)
00798      return(1);
00799  return(0);  
00800 }

int isoburn_read_iso_head ( struct burn_drive *  d,
int  lba,
int *  image_blocks,
char *  info,
int  flag 
)

Try whether the data at the given address look like a ISO 9660 image header and obtain its alleged size.

Depending on the info mode one other string of text information can be retrieved too.

Since:
0.1.6
Parameters:
drive The drive with the media to inspect
lba The block number from where to read
image_blocks The number of 2048 bytes blocks
info Caller provided memory, enough to take eventual info reply
flag bit0-7: info return mode 0= do not return anything in info (do not even touch it) 1= copy volume id to info (info needs 33 bytes) 2=
Since:
0.2.2 : copy 64 kB header to info (needs 65536 bytes) bit13=

0.2.2: do not read head from media but use first 64 kB from info bit14= check both half buffers (not only second) return 2 if found in first block bit15= return-1 on read error

Returns:
>0 seems to be a valid ISO image, 0 format not recognized, <0 error

Definition at line 1021 of file burn_wrap.c.

References isoburn_read_iso_head_parse().

Referenced by isoburn_emulate_toc(), isoburn_get_mount_params(), isoburn_read_image(), and isoburn_set_msc1().

01023 {
01024  unsigned char buffer[64*1024];
01025  int ret, info_mode;
01026  off_t data_count;
01027 
01028  info_mode= flag&255;
01029  *image_blocks= 0;
01030  if(flag&(1<<13)) {
01031    memcpy(buffer, info, 64*1024);
01032  } else {
01033    ret = burn_read_data(d, ((off_t) lba) * (off_t) 2048, (char *) buffer,
01034                       (off_t) 64*1024, &data_count, 2); /* no error messages */
01035    if(ret<=0)
01036      return(-1*!!(flag&(1<<15)));
01037    if(info_mode==2)
01038      memcpy(info, buffer, 64*1024);
01039  }
01040 
01041  if(flag&(1<<14)) {
01042    ret= isoburn_read_iso_head_parse(d, buffer, image_blocks, info, info_mode);
01043    if(ret<0)
01044      return(ret);
01045    if(ret>0)
01046      return(2);
01047  }
01048  ret= isoburn_read_iso_head_parse(d, buffer+32*1024, image_blocks, info,
01049                                   info_mode);
01050  if(ret<=0)
01051    return(ret);
01052  return(1);
01053 }

int isoburn_read_iso_head_parse ( struct burn_drive *  d,
unsigned char *  data,
int *  image_blocks,
char *  info,
int  flag 
)

Definition at line 973 of file burn_wrap.c.

References isoburn_msgs_submit().

Referenced by isoburn_read_iso_head().

00975 {
00976  int i, info_mode;
00977 
00978  /* is this an ISO image ? */
00979  if(data[0]!=1)
00980    return(0);
00981  if(strncmp((char *) (data+1),"CD001",5)!=0)
00982    return(0);
00983  /* believe so */
00984 
00985  *image_blocks= data[80] | (data[81]<<8) | (data[82]<<16) | (data[83]<<24);
00986  info_mode= flag&255;
00987  if(info_mode==0) {
00988    ;
00989  } else if(info_mode==1) {
00990    strncpy(info, (char *) (data+40), 32);
00991    info[32]= 0;
00992    for(i= strlen(info)-1; i>=0; i--)
00993      if(info[i]!=' ')
00994    break;
00995      else
00996        info[i]= 0;
00997  } else if(info_mode==2) {
00998    ;
00999  } else {
01000    isoburn_msgs_submit(NULL, 0x00060000,
01001                "Program error: Unknown info mode with isoburn_read_iso_head()",
01002                0, "FATAL", 0);
01003    return(-1);
01004  }
01005  return(1);
01006 }

int isoburn_report_iso_error ( int  iso_error_code,
char  msg_text[],
int  os_errno,
char  min_severity[],
int  flag 
)

Definition at line 941 of file burn_wrap.c.

References isoburn__sev_to_text(), and isoburn__text_to_sev().

Referenced by isoburn_new(), isoburn_prepare_disc_aux(), and isoburn_read_image().

00943 {
00944  int error_code, iso_sev, min_sev, ret;
00945  char *sev_text_pt, *msg_text_pt= NULL;
00946 
00947  error_code= iso_error_get_code(iso_error_code);
00948  if(error_code < 0x00030000 || error_code >= 0x00040000)
00949    error_code= (error_code & 0xffff) | 0x00050000;
00950 
00951  if(iso_error_code<0)
00952    msg_text_pt= (char *) iso_error_to_msg(iso_error_code);
00953  if(msg_text_pt==NULL)
00954    msg_text_pt= msg_text;
00955  iso_sev= iso_error_get_severity(iso_error_code);
00956  sev_text_pt= min_severity;
00957  isoburn__text_to_sev(min_severity, &min_sev, 0);
00958  if(min_sev < iso_sev) 
00959    isoburn__sev_to_text(iso_sev, &sev_text_pt, 0);
00960  ret= iso_msgs_submit(error_code, msg_text_pt, os_errno, sev_text_pt, 0);
00961  return(ret);
00962 }

int isoburn_set_msc1 ( struct burn_drive *  d,
int  adr_mode,
char *  adr_value,
int  flag 
)

Set up isoburn_disc_get_msc1() to return a fabricated value.

This makes only sense between aquiring the drive and reading the image. After isoburn_read_image() it will confuse the coordination of libisoburn and libisofs. Note: Sessions and tracks are counted beginning with 1, not with 0.

Since:
0.1.6
Parameters:
drive The drive where msc1 is to be set
adr_mode Determines how to interpret adr_value and to set msc1. If adr_value shall represent a number then decimal ASCII digits are expected. 0= start lba of last session in TOC, ignore adr_value 1= start lba of session number given by adr_value 2= start lba of track given number by adr_value 3= adr_value itself is the lba to be used 4= start lba of last session with volume id given by adr_value
adr_value A string describing the value to be eventually used.
flag Bitfield for control purposes. bit0=
Since:
0.2.2 with adr_mode 3: adr_value might be 16 blocks too high (e.g. -C stemming from growisofs). Probe for ISO head at adr_value-16 and eventually adjust setting. bit1= insist in seeing a disc object with at least one session bit2= with adr_mode 4: use adr_value as regular expression

Definition at line 1523 of file burn_wrap.c.

References isoburn_toc_disc::disc, isoburn::fabricated_msc1, isoburn_find_emulator(), isoburn_get_track_lba(), isoburn_msgs_submit(), isoburn_read_iso_head(), isoburn_toc_disc_free(), isoburn_toc_disc_get_sessions(), isoburn_toc_drive_get_disc(), and isoburn_toc_session_get_tracks().

Referenced by isoburn_get_mount_params().

01525 {
01526  int ret, num_sessions, num_tracks, adr_num, i, j, total_tracks;
01527  int lba, best_lba, size, re_valid= 0;
01528  char volid[33], msg[160];
01529  struct isoburn *o;
01530  struct isoburn_toc_disc *disc= NULL;
01531  struct isoburn_toc_session **sessions= NULL;
01532  struct isoburn_toc_track **tracks= NULL;
01533  static char mode_names[][20]= {"auto", "session", "track", "lba", "volid"};
01534  static int max_mode_names= 4;
01535  regex_t re;
01536  regmatch_t match[1];
01537 
01538  ret= isoburn_find_emulator(&o, d, 0);
01539  if(ret<0)
01540    return(-1);
01541  if(o==NULL)
01542    return(-1);
01543 
01544  adr_num= atoi(adr_value);
01545  if(adr_mode!=3 || (flag & 2)) {
01546    disc= isoburn_toc_drive_get_disc(d);
01547    if(disc==NULL) {
01548 not_found:;
01549      if(adr_mode<0 || adr_mode>max_mode_names)
01550        goto unknown_mode;
01551      sprintf(msg, "Failed to find %s %s", mode_names[adr_mode],
01552                   strlen(adr_value)<=80 ?  adr_value : "-oversized-string-");
01553      isoburn_msgs_submit(o, 0x00060000, msg, 0, "FAILURE", 0);
01554      ret= 0; goto ex;
01555    }
01556    sessions= isoburn_toc_disc_get_sessions(disc, &num_sessions);
01557    if(sessions==NULL || num_sessions<=0)
01558      goto not_found;
01559  }
01560  if(adr_mode==0) {
01561    /* Set fabricated_msc1 to last session in TOC */
01562    tracks= isoburn_toc_session_get_tracks(sessions[num_sessions-1],
01563                                           &num_tracks);
01564    if(tracks==NULL || num_tracks<=0)
01565      goto not_found;
01566    isoburn_get_track_lba(tracks[0], &(o->fabricated_msc1), 0);
01567 
01568  } else if(adr_mode==1) {
01569    /* Use adr_num as session index (first session is 1, not 0) */
01570    if(adr_num<1 || adr_num>num_sessions)
01571      goto not_found;
01572    tracks= isoburn_toc_session_get_tracks(sessions[adr_num-1], &num_tracks);
01573    if(tracks==NULL || num_tracks<=0)
01574      goto not_found;
01575    isoburn_get_track_lba(tracks[0], &(o->fabricated_msc1), 0);
01576 
01577  } else if(adr_mode==2) {
01578    /* use adr_num as track index */
01579    total_tracks= 0;
01580    for(i=0; i<num_sessions; i++) {
01581      tracks= isoburn_toc_session_get_tracks(sessions[i], &num_tracks);
01582      if(tracks==NULL)
01583    continue;
01584      for(j= 0; j<num_tracks; j++) {
01585        total_tracks++;
01586        if(total_tracks==adr_num) {
01587          isoburn_get_track_lba(tracks[j], &(o->fabricated_msc1), 0);
01588          ret= 1; goto ex;
01589        }
01590      }
01591    }
01592    goto not_found;
01593 
01594  } else if(adr_mode==3) {
01595    o->fabricated_msc1= adr_num;
01596    if((flag & 1) && o->fabricated_msc1 >= 16) {
01597      /* adr_num is possibly 16 blocks too high */
01598      ret= isoburn_read_iso_head(d, o->fabricated_msc1, &size,volid, 1|(1<<14));
01599      if(ret==2)
01600        o->fabricated_msc1-= 16;
01601    }
01602  } else if(adr_mode==4) {
01603    /* search for volume id that is equal to adr_value */
01604    if(flag & 4) {
01605      ret= regcomp(&re, adr_value, 0);
01606      if(ret != 0)
01607        flag&= ~4;
01608      else
01609        re_valid= 1;
01610    }
01611    best_lba= -1;
01612    for(i=0; i<num_sessions; i++) {
01613      tracks= isoburn_toc_session_get_tracks(sessions[i], &num_tracks);
01614      if(tracks==NULL)
01615    continue;
01616      for(j= 0; j<num_tracks; j++) {
01617        isoburn_get_track_lba(tracks[0], &lba, 0);
01618        ret= isoburn_read_iso_head(d, lba, &size, volid, 1);
01619        if(ret<=0)
01620      continue;
01621        if(flag & 4) {
01622          ret= regexec(&re, volid, 1, match, 0);
01623          if(ret != 0)
01624      continue;
01625        } else {
01626          if(strcmp(volid, adr_value)!=0)
01627      continue;
01628        }
01629        best_lba= lba;
01630      }
01631    }
01632    if(best_lba<0)
01633      goto not_found;
01634    o->fabricated_msc1= best_lba;
01635 
01636  } else {
01637 unknown_mode:;
01638    sprintf(msg, "Program error: Unknown msc1 address mode %d", adr_mode);
01639    isoburn_msgs_submit(o, 0x00060000, msg, 0, "FATAL", 0);
01640    ret= 0; goto ex;
01641  }
01642  ret= 1;
01643 ex:;
01644  if(disc!=NULL)
01645    isoburn_toc_disc_free(disc);
01646  if((flag & 4) && re_valid)
01647    regfree(&re);
01648  return(ret);
01649 }

int isoburn_set_msgs_submit ( int(*)(void *handle, int error_code, char msg_text[], int os_errno, char severity[], int flag)  msgs_submit,
void *  submit_handle,
int  submit_flag,
int  flag 
)

Note: Above version numbers are also recorded in configure.ac because libtool wants them as parameters at build time.

For the library compatibility check, ISOBURN_*_VERSION in configure.ac are not decisive. Only the three numbers here do matter. Usage discussion:Some developers of the libburnia project have differing opinions how to ensure the compatibility of libaries and applications.

It is about whether to use at compile time and at runtime the version numbers isoburn_header_version_* provided here. Thomas Schmitt advises to use them. Vreixo Formoso advises to use other means.

At compile time:

Vreixo Formoso advises to leave proper version matching to properly programmed checks in the the application's build system, which will eventually refuse compilation.

Thomas Schmitt advises to use the macros defined here for comparison with the application's requirements of library revisions and to eventually break compilation.

Both advises are combinable. I.e. be master of your build system and have if checks in the source code of your application, nevertheless.

At runtime (via *_is_compatible()):

Vreixo Formoso advises to compare the application's requirements of library revisions with the runtime library. This is to allow runtime libraries which are young enough for the application but too old for the lib*.h files seen at compile time.

Thomas Schmitt advises to compare the header revisions defined here with the runtime library. This is to enforce a strictly monotonous chain of revisions from app to header to library, at the cost of excluding some older libraries.

These two advises are mutually exclusive.

-----------------------------------------------------

For an implementation of the Thomas Schmitt approach, see libisoburn/burn_wrap.c : isoburn_initialize() This connects libisoburn as "application" with libisofs as "library".

The compatible part of Vreixo Formoso's approach is implemented in configure.ac LIBBURN_REQUIRED, LIBISOFS_REQUIRED. In isoburn_initialize() it would rather test by iso_lib_is_compatible(isoburn_libisofs_req_major,... than by iso_lib_is_compatible(iso_lib_header_version_major,... and would leave out the ugly compile time traps. Announce to the library an application provided method for immediate delivery of messages. It is used when no drive is affected directly or if the drive has no own msgs_submit() method attached by isoburn_drive_set_msgs_submit. If no method is preset or if the method is set to NULL then libisoburn delivers its messages through the message queue of libburn.

Parameters:
msgs_submit The function call which implements the method
submit_handle Handle to be used as first argument of msgs_submit
submit_flag Flag to be used as last argument of msgs_submit
flag Unused yet, submit 0
Since:
0.2.0

Definition at line 231 of file burn_wrap.c.

References libisoburn_default_msgs_submit, libisoburn_default_msgs_submit_flag, libisoburn_default_msgs_submit_handle, and isoburn::msgs_submit.

00235 {
00236  libisoburn_default_msgs_submit= msgs_submit;
00237  libisoburn_default_msgs_submit_handle= submit_handle;
00238  libisoburn_default_msgs_submit_flag= submit_flag;
00239  return(1);
00240 }

int isoburn_set_start_byte ( struct isoburn o,
off_t  value,
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 .

Parameters:
o The isoburn object to be programmed.
value The start address in bytes
flag unused yet
Returns:
<=0 is failure , >0 success

Definition at line 803 of file burn_wrap.c.

References isoburn::drive, isoburn_msgs_submit(), Libisoburn_nwa_alignemenT, isoburn::min_start_byte, and isoburn::nwa.

Referenced by isoburn_start_emulation().

00804 {
00805  int ret;
00806  struct burn_drive *drive = o->drive;
00807  struct burn_multi_caps *caps= NULL;
00808  
00809  ret= burn_disc_get_multi_caps(drive, BURN_WRITE_NONE, &caps, 0);
00810  if(ret<=0)
00811    goto ex;
00812  if(!caps->start_adr) {
00813    isoburn_msgs_submit(o, 0x00060000,
00814                        "Cannot set start byte address with this type of media",
00815                        0, "FAILURE", 0);
00816    {ret= 0; goto ex;}
00817  }
00818  o->min_start_byte= value;
00819  if(value % caps->start_alignment)
00820    value+= caps->start_alignment - (value % caps->start_alignment);
00821  o->nwa= value/2048;
00822  /* If suitable for media alignment, round up to Libisoburn_nwa_alignemenT */
00823  if((o->nwa % Libisoburn_nwa_alignemenT) &&
00824      ((Libisoburn_nwa_alignemenT*2048) % caps->start_alignment)==0 )
00825    o->nwa+= Libisoburn_nwa_alignemenT - (o->nwa % Libisoburn_nwa_alignemenT);
00826  ret= 1;
00827 ex:
00828  if(caps!=NULL)
00829    burn_disc_free_multi_caps(&caps);
00830  return(ret);
00831 }

int isoburn_toc_destroy_arrays ( struct isoburn_toc_disc o,
int  flag 
)

Definition at line 1244 of file burn_wrap.c.

References isoburn_toc_disc::session_pointers, isoburn_toc_disc::sessions, isoburn_toc_disc::track_pointers, and isoburn_toc_disc::tracks.

Referenced by isoburn_toc_disc_free(), and isoburn_toc_new_arrays().

01245 {
01246  if(o->sessions!=NULL)
01247    free((char *) o->sessions);
01248  o->sessions= NULL;
01249  if(o->session_pointers!=NULL)
01250    free((char *) o->session_pointers);
01251  o->session_pointers= NULL;
01252  if(o->tracks!=NULL)
01253    free((char *) o->tracks);
01254  o->tracks= NULL;
01255  if(o->track_pointers!=NULL)
01256    free((char *) o->track_pointers);
01257  o->track_pointers= NULL;
01258  return(1);
01259 }

void isoburn_toc_disc_free ( struct isoburn_toc_disc disc  ) 

Release the memory associated with a master handle of media.

The handle is invalid afterwards and may not be used any more. Wrapper for: burn_disc_free()

Since:
0.1.6
Parameters:
disc The master handle of the media

Definition at line 1478 of file burn_wrap.c.

References isoburn_toc_disc::disc, and isoburn_toc_destroy_arrays().

Referenced by isoburn_set_msc1().

01479 {
01480  if(d->disc!=NULL)
01481    burn_disc_free(d->disc);
01482  isoburn_toc_destroy_arrays(d, 0);
01483  free((char *) d);
01484 }

int isoburn_toc_disc_get_sectors ( struct isoburn_toc_disc disc  ) 

Tell the number of 2048 byte blocks covered by the table of content.

This number includes the eventual gaps between sessions and tracks. So this call is not really a wrapper for burn_disc_get_sectors().

Since:
0.1.6
Parameters:
disc The master handle of the media
Returns:
number of blocks, <=0 indicates unknown or unreadable state

Definition at line 1348 of file burn_wrap.c.

References isoburn_toc_disc::disc, isoburn_toc_entry::next, isoburn_toc_entry::start_lba, isoburn_toc_disc::toc, and isoburn_toc_entry::track_blocks.

01349 {
01350  struct isoburn_toc_entry *t;
01351  int ret= 0, num_sessions, num_tracks;
01352  struct burn_session **sessions;
01353  struct burn_track **tracks;
01354  struct burn_toc_entry entry;
01355 
01356  if(disc==NULL)
01357    return(0);
01358  if(disc->toc!=NULL) {
01359    for(t= disc->toc; t!=NULL; t= t->next)
01360      ret= t->start_lba + t->track_blocks;
01361  } else if(disc->disc!=NULL) {
01362    sessions= burn_disc_get_sessions(disc->disc, &num_sessions);
01363    if(num_sessions > 0) {
01364      tracks = burn_session_get_tracks(sessions[num_sessions - 1],
01365                                       &num_tracks);
01366      if(num_tracks > 0) {
01367        burn_track_get_entry(tracks[num_tracks - 1], &entry);
01368        if(entry.extensions_valid & 1)
01369          ret= entry.start_lba + entry.track_blocks;
01370      }
01371    }
01372 /*
01373    ret= burn_disc_get_sectors(disc->disc);
01374 */
01375  }
01376  return(ret);
01377 }

struct isoburn_toc_session** isoburn_toc_disc_get_sessions ( struct isoburn_toc_disc disc,
int *  num 
) [read]

Get the array of session handles from the table of content.

Wrapper for: burn_disc_get_sessions()

Since:
0.1.6
Parameters:
disc The master handle of the media
num returns the number of sessions in the array
Returns:
the address of the array of session handles

Definition at line 1380 of file burn_wrap.c.

References isoburn_toc_disc::session_count, and isoburn_toc_disc::session_pointers.

Referenced by isoburn_get_mount_params(), and isoburn_set_msc1().

01382 {
01383  *num= disc->session_count;
01384  return(disc->session_pointers);
01385 }

struct isoburn_toc_disc* isoburn_toc_drive_get_disc ( struct burn_drive *  d  )  [read]

Obtain a master handle for the table of content.

This handle governs allocated resources which have to be released by isoburn_toc_disc_free() when no longer needed. Wrapper for: burn_drive_get_disc()

Since:
0.1.6
Parameters:
drive The drive with the media to inspect
Returns:
NULL in case there is no content info, else it is a valid handle

Definition at line 1262 of file burn_wrap.c.

References isoburn_toc_disc::disc, isoburn_find_emulator(), isoburn_toc_new_arrays(), isoburn_toc_entry::next, isoburn_toc_session::session, isoburn_toc_disc::session_count, isoburn_toc_disc::session_pointers, isoburn_toc_disc::sessions, isoburn::toc, isoburn_toc_disc::toc, isoburn_toc_track::toc_entry, isoburn_toc_session::toc_entry, isoburn_toc_track::track, isoburn_toc_session::track_count, isoburn_toc_disc::track_count, isoburn_toc_session::track_pointers, isoburn_toc_disc::track_pointers, and isoburn_toc_disc::tracks.

Referenced by isoburn_get_mount_params(), and isoburn_set_msc1().

01263 {
01264  int ret, session_count= 0, track_count= 0, num_tracks= 0, i, j;
01265  struct isoburn *o;
01266  struct isoburn_toc_entry *t;
01267  struct isoburn_toc_disc *toc_disc= NULL;
01268  struct burn_session **s;
01269  struct burn_track **tracks;
01270 
01271  toc_disc= calloc(1, sizeof(struct isoburn_toc_disc));
01272  if(toc_disc==NULL)
01273    return(NULL);
01274  toc_disc->disc= NULL;
01275  toc_disc->sessions= NULL;
01276  toc_disc->session_pointers= NULL;
01277  toc_disc->tracks= NULL;
01278  toc_disc->track_pointers= NULL;
01279  toc_disc->session_count= 0;
01280  toc_disc->track_count= 0;
01281  toc_disc->toc= NULL; 
01282 
01283  /* is the media emulated multi-session ? */
01284  ret= isoburn_find_emulator(&o, d, 0);
01285  if(ret<0)
01286    goto libburn;
01287  if(o->toc==NULL)
01288    goto libburn;
01289 
01290  /* This is an emulated TOC */
01291  toc_disc->toc= o->toc;
01292  for(t= toc_disc->toc; t!=NULL; t= t->next)
01293    session_count++;
01294  ret= isoburn_toc_new_arrays(toc_disc, session_count, session_count, 0);
01295  if(ret<=0)
01296    goto failure;
01297  t= toc_disc->toc;
01298  for(i= 0; i<session_count; i++) {
01299    toc_disc->sessions[i].track_pointers= toc_disc->track_pointers+i;
01300    toc_disc->sessions[i].track_count= 1;
01301    toc_disc->sessions[i].toc_entry= t;
01302    toc_disc->session_pointers[i]= toc_disc->sessions+i;
01303    toc_disc->tracks[i].toc_entry= t;
01304    toc_disc->track_pointers[i]= toc_disc->tracks+i;
01305    t= t->next;
01306  }
01307  toc_disc->session_count= session_count;
01308  toc_disc->track_count= session_count;
01309  return(toc_disc);
01310 
01311 libburn:;
01312  /* This is a libburn provided TOC */
01313  toc_disc->disc= burn_drive_get_disc(d);
01314  if(toc_disc->disc == NULL) {
01315 failure:;
01316    free((char *) toc_disc);
01317    return(NULL);
01318  }
01319  s= burn_disc_get_sessions(toc_disc->disc, &session_count);
01320  for(i= 0; i<session_count; i++) {
01321    tracks = burn_session_get_tracks(s[i], &num_tracks);
01322    track_count+= num_tracks;
01323  }
01324  if(session_count<=0 || track_count<=0)
01325    goto failure;
01326  ret= isoburn_toc_new_arrays(toc_disc, session_count, track_count, 0);
01327  if(ret<=0)
01328    goto failure;
01329  track_count= 0;
01330  for(i= 0; i<session_count; i++) {
01331    tracks = burn_session_get_tracks(s[i], &num_tracks);
01332    toc_disc->sessions[i].session= s[i];
01333    toc_disc->sessions[i].track_pointers= toc_disc->track_pointers+track_count;
01334    toc_disc->sessions[i].track_count= num_tracks;
01335    toc_disc->session_pointers[i]= toc_disc->sessions+i;
01336    for(j= 0; j<num_tracks; j++) {
01337      toc_disc->tracks[track_count+j].track= tracks[j];
01338      toc_disc->track_pointers[track_count+j]= toc_disc->tracks+(track_count+j);
01339    }
01340    track_count+= num_tracks;
01341  }
01342  toc_disc->session_count= session_count;
01343  toc_disc->track_count= track_count;
01344  return(toc_disc);
01345 }

int isoburn_toc_entry_finish ( struct burn_toc_entry *  entry,
int  session_no,
int  track_no,
int  flag 
)

Definition at line 1407 of file burn_wrap.c.

Referenced by isoburn_toc_session_get_leadout_entry(), and isoburn_toc_track_get_entry().

01409 {
01410  int pmin, psec, pframe;
01411 
01412  entry->extensions_valid= 1;
01413  entry->adr= 1;
01414  entry->control= 4;
01415  entry->session= session_no & 255;
01416  entry->session_msb= (session_no >> 8) & 255;
01417  entry->point= track_no & 255;
01418  entry->point_msb= (track_no >> 8) & 255;
01419 
01420  burn_lba_to_msf(entry->start_lba, &pmin, &psec, &pframe);
01421  if(pmin<=255)
01422    entry->pmin= pmin;
01423  else
01424    entry->pmin= 255;
01425  entry->psec= psec;
01426  entry->pframe= pframe; 
01427  return(1);
01428 }

int isoburn_toc_new_arrays ( struct isoburn_toc_disc o,
int  session_count,
int  track_count,
int  flag 
)

Definition at line 1211 of file burn_wrap.c.

References isoburn_toc_destroy_arrays(), isoburn_toc_session::session, isoburn_toc_disc::session_pointers, isoburn_toc_disc::sessions, isoburn_toc_track::toc_entry, isoburn_toc_session::toc_entry, isoburn_toc_track::track, isoburn_toc_session::track_count, isoburn_toc_session::track_pointers, isoburn_toc_disc::track_pointers, and isoburn_toc_disc::tracks.

Referenced by isoburn_toc_drive_get_disc().

01213 {
01214  int i;
01215  int isoburn_toc_destroy_arrays(struct isoburn_toc_disc *o, int flag);
01216 
01217  o->sessions= calloc(session_count, sizeof(struct isoburn_toc_session));
01218  o->session_pointers=
01219                    calloc(session_count, sizeof(struct isoburn_toc_session *));
01220  o->tracks= calloc(track_count, sizeof(struct isoburn_toc_track));
01221  o->track_pointers= calloc(track_count, sizeof(struct isoburn_toc_track *));
01222  if(o->sessions!=NULL && o->session_pointers!=NULL &&
01223     o->tracks!=NULL && o->track_pointers!=NULL) {
01224    for(i= 0; i<session_count; i++) {
01225      o->sessions[i].session= NULL;
01226      o->sessions[i].track_pointers= NULL;
01227      o->sessions[i].track_count= 0;
01228      o->sessions[i].toc_entry= NULL;
01229      o->session_pointers[i]= NULL;
01230    }
01231    for(i= 0; i<track_count; i++) {
01232      o->tracks[i].track= NULL;
01233      o->tracks[i].toc_entry= NULL;
01234      o->track_pointers[i]= NULL;
01235    }
01236    return(1);
01237  }
01238  /* failed */
01239  isoburn_toc_destroy_arrays(o, 0);
01240  return(-1);
01241 }

void isoburn_toc_session_get_leadout_entry ( struct isoburn_toc_session s,
struct burn_toc_entry *  entry 
)

Obtain a copy of the entry which describes the end of a particular session.

Wrapper for: burn_session_get_leadout_entry()

Since:
0.1.6
Parameters:
s The session handle
entry A pointer to memory provided by the caller. It will be filled with info according to struct burn_toc_entry as defined in libburn.h

Definition at line 1431 of file burn_wrap.c.

References isoburn_toc_entry_finish(), isoburn_toc_entry::session, isoburn_toc_session::session, isoburn_toc_entry::start_lba, isoburn_toc_track::toc_entry, isoburn_toc_session::toc_entry, isoburn_toc_entry::track_blocks, isoburn_toc_session::track_count, isoburn_toc_entry::track_no, and isoburn_toc_session::track_pointers.

01433 {
01434  struct isoburn_toc_track *t;
01435 
01436  if(s==NULL)
01437    return;
01438  if(s->session!=NULL && s->toc_entry==NULL) {
01439    burn_session_get_leadout_entry(s->session, entry);
01440    return;
01441  }
01442  if(s->track_count<=0 || s->track_pointers==NULL || s->toc_entry==NULL)
01443    return;
01444  t= s->track_pointers[s->track_count-1];
01445  entry->start_lba= t->toc_entry->start_lba + t->toc_entry->track_blocks;
01446  entry->track_blocks= 0;
01447  isoburn_toc_entry_finish(entry, s->toc_entry->session, t->toc_entry->track_no,
01448                           0);
01449 }

int isoburn_toc_session_get_sectors ( struct isoburn_toc_session s  ) 

Tell the number of 2048 byte blocks covered by a particular session.

Wrapper for: burn_session_get_sectors()

Since:
0.1.6
Parameters:
s The session handle
Returns:
number of blocks, <=0 indicates unknown or unreadable state

Definition at line 1388 of file burn_wrap.c.

References isoburn_toc_entry::next, isoburn_toc_session::session, isoburn_toc_session::toc_entry, isoburn_toc_entry::track_blocks, and isoburn_toc_session::track_count.

01389 {
01390  struct isoburn_toc_entry *t;
01391  int count= 0, i;
01392 
01393  if(s==NULL)
01394    return(0);
01395  if(s->toc_entry!=NULL) {
01396    t= s->toc_entry;
01397    for(i= 0; i<s->track_count; i++) {
01398      count+= t->track_blocks;
01399      t= t->next;
01400    }
01401  } else if(s->session!=NULL)
01402    count= burn_session_get_sectors(s->session);
01403  return(count);
01404 }

struct isoburn_toc_track** isoburn_toc_session_get_tracks ( struct isoburn_toc_session s,
int *  num 
) [read]

Get the array of track handles from a particular session.

Wrapper for: burn_session_get_tracks()

Since:
0.1.6
Parameters:
s The session handle
num returns the number of tracks in the array
Returns:
the address of the array of track handles

Definition at line 1452 of file burn_wrap.c.

References isoburn_toc_session::track_count, and isoburn_toc_session::track_pointers.

Referenced by isoburn_get_mount_params(), and isoburn_set_msc1().

01454 {
01455  *num= s->track_count;
01456  return(s->track_pointers);
01457 }

void isoburn_toc_track_get_entry ( struct isoburn_toc_track t,
struct burn_toc_entry *  entry 
)

Obtain a copy of the entry which describes a particular track.

Wrapper for: burn_track_get_entry()

Since:
0.1.6
Parameters:
s The track handle
entry A pointer to memory provided by the caller. It will be filled with info according to struct burn_toc_entry as defined in libburn.h

Definition at line 1460 of file burn_wrap.c.

References isoburn_toc_entry_finish(), isoburn_toc_entry::session, isoburn_toc_entry::start_lba, isoburn_toc_track::toc_entry, isoburn_toc_track::track, isoburn_toc_entry::track_blocks, and isoburn_toc_entry::track_no.

Referenced by isoburn_get_track_lba().

01462 {
01463  if(t==0)
01464    return;
01465  if(t->track!=NULL && t->toc_entry==NULL) {
01466    burn_track_get_entry(t->track, entry);
01467    return;
01468  }
01469  if(t->toc_entry==NULL)
01470    return;
01471  entry->start_lba= t->toc_entry->start_lba;
01472  entry->track_blocks= t->toc_entry->track_blocks;
01473  isoburn_toc_entry_finish(entry, t->toc_entry->session, t->toc_entry->track_no,
01474                           0);
01475 }

static int isoburn_welcome_media ( struct isoburn **  o,
struct burn_drive *  d,
int  flag 
) [static]

Examines the media and sets appropriate emulation if needed.

Parameters:
flag bit0= pretent blank on overwriteable media bit3= if the drive reports a -ROM profile then try to read table of content by scanning for ISO image headers. bit4= do not emulate TOC on overwriteable media bit5= ignore ACL from external filesystems bit6= ignore POSIX Extended Attributes from external filesystems

Definition at line 271 of file burn_wrap.c.

References isoburn_emulate_toc(), isoburn_is_intermediate_dvd_rw(), isoburn_new(), isoburn_start_emulation(), libisoburn_default_msgs_submit, libisoburn_default_msgs_submit_flag, libisoburn_default_msgs_submit_handle, isoburn_toc_entry::next, isoburn::nwa, and isoburn_toc_entry::start_lba.

Referenced by isoburn_drive_aquire(), and isoburn_drive_grab().

00273 {
00274  int ret, lba, nwa, profile, readonly= 0;
00275  struct burn_multi_caps *caps= NULL;
00276  struct isoburn_toc_entry *t;
00277  char profile_name[80];
00278 
00279  profile_name[0]= 0;
00280  ret= burn_disc_get_profile(d, &profile, profile_name);
00281  if(ret<=0)
00282    profile= 0x00;
00283  ret= burn_disc_get_multi_caps(d, BURN_WRITE_NONE, &caps, 0);
00284  if(ret<0) /* == 0 is read-only media, but it is too early to reject it here */
00285    goto ex;
00286  if(ret==0)
00287    readonly= 1;
00288  ret= isoburn_new(o, 0);
00289  if(ret<=0)
00290    goto ex;
00291  (*o)->drive= d;
00292  (*o)->msgs_submit= libisoburn_default_msgs_submit;
00293  (*o)->msgs_submit_handle= libisoburn_default_msgs_submit_handle;
00294  (*o)->msgs_submit_flag= libisoburn_default_msgs_submit_flag;
00295  iso_image_set_ignore_aclea((*o)->image, (flag >> 5 ) & 3);
00296 
00297 #ifdef Hardcoded_cd_rW
00298  /* <<< A70929 : hardcoded CD-RW with fabricated -msinfo */
00299  caps->start_adr= 0;
00300  (*o)->fabricated_disc_status= BURN_DISC_APPENDABLE;
00301 #endif
00302 
00303  if(caps->start_adr) {         /* set emulation to overwriteable */
00304    (*o)->emulation_mode= 1;
00305    ret= isoburn_is_intermediate_dvd_rw(d, 0);
00306    if(ret>0) {
00307      (*o)->min_start_byte= 0;
00308      (*o)->nwa= 0;
00309      (*o)->zero_nwa= 0;
00310    }
00311    if(flag&1) {
00312      (*o)->nwa= (*o)->zero_nwa;
00313      (*o)->fabricated_disc_status= BURN_DISC_BLANK;
00314    } else {
00315      ret= isoburn_start_emulation(*o, 0);
00316      if(ret<=0) {
00317        (*o)->emulation_mode= -1;
00318        goto ex;
00319      }
00320      if(!(flag & 16)) {
00321        /* try to read emulated toc */
00322        ret= isoburn_emulate_toc(d, 0);
00323        if(ret<0) {
00324          (*o)->emulation_mode= -1;
00325          goto ex;
00326        }
00327      }
00328    }
00329 
00330  } else {
00331 
00332     /* >>> recognize unsuitable media (but allow read-only media) */;
00333 
00334    if(readonly) {
00335      /* This might be overwriteable media in a -ROM drive */
00336      if((flag & 16)) {
00337        ret= 0;
00338      } else {
00339        ret= isoburn_emulate_toc(d, 1);
00340        if(ret<0)
00341          goto ex;
00342      }
00343      if(ret==0 && profile !=0x08 && (flag&8)) {
00344        /* This might also be multi-session media which do not
00345           get shown with a decent TOC.
00346           CD-R TOC (profile 0x08) can be trusted. Others not.
00347           Do a scan search of ISO headers.
00348        */
00349        ret= isoburn_emulate_toc(d, 1|2);
00350        if(ret<0)
00351          goto ex;
00352        if(ret>0) { /* point msc1 to last session */
00353          if((*o)->toc!=NULL) {
00354            for(t= (*o)->toc; t->next!=NULL; t= t->next);
00355             (*o)->fabricated_msc1= t->start_lba;
00356          }
00357        }
00358      }
00359    }
00360 #ifdef Hardcoded_cd_rW
00361    (*o)->nwa= Hardcoded_cd_rw_nwA;
00362 #else
00363    ret= burn_disc_track_lba_nwa(d, NULL, 0, &lba, &nwa);
00364    if(ret>0)
00365      (*o)->nwa= nwa;
00366 #endif
00367 
00368  }
00369 
00370  ret= 1;
00371 ex:
00372  if(caps!=NULL)
00373    burn_disc_free_multi_caps(&caps);
00374  return(ret);
00375 }


Variable Documentation

Definition at line 103 of file isoburn.c.

int(* libisoburn_default_msgs_submit)(void *handle, int error_code, char msg_text[], int os_errno, char severity[], int flag)

Definition at line 48 of file isoburn.c.

Referenced by isoburn_msgs_submit(), isoburn_set_msgs_submit(), and isoburn_welcome_media().

Definition at line 47 of file isoburn.c.

Referenced by isoburn_msgs_submit(), isoburn_set_msgs_submit(), and isoburn_welcome_media().


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