libisoburn  1.5.4
About: libisoburn is a frontend for the libraries libburn and libisofs which enables creation and expansion of ISO-9660 filesystems on all media and file types supported by libburn. It implements the API and command interpreter of program xorriso, and installs this program as small dynamically linked binary. xorriso is suitable for incremental data backup and for production of bootable ISO 9660 images. A statically linked version is available as GNU xorriso.
  Fossies Dox: libisoburn-1.5.4.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

burn_wrap.c
Go to the documentation of this file.
1 
2 /*
3  cc -g -c \
4  -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE \
5  burn_wrap.c
6 */
7 /* libburn wrappers for libisoburn
8 
9  Copyright 2007 - 2017 Thomas Schmitt, <scdbackup@gmx.net>
10  Provided under GPL version 2 or later.
11 */
12 
13 #ifdef HAVE_CONFIG_H
14 #include "../config.h"
15 #endif
16 
17 /* <<< A70929 : hardcoded CD-RW with fabricated -msinfo
18 #define Hardcoded_cd_rW 1
19 #define Hardcoded_cd_rw_c1 12999
20 #define Hardcoded_cd_rw_nwA 152660
21 */
22 
23 #include <stdio.h>
24 #include <ctype.h>
25 #include <sys/types.h>
26 #include <unistd.h>
27 #include <string.h>
28 #include <stdlib.h>
29 #include <sys/stat.h>
30 #include <fcntl.h>
31 #include <time.h>
32 #include <regex.h>
33 
34 #ifndef Xorriso_standalonE
35 
36 #include <libburn/libburn.h>
37 #include <libisofs/libisofs.h>
38 #ifdef Xorriso_with_libjtE
39 #include <libjte/libjte.h>
40 #endif
41 
42 #else /* ! Xorriso_standalonE */
43 
44 #include "../libisofs/libisofs.h"
45 #include "../libburn/libburn.h"
46 #ifdef Xorriso_with_libjtE
47 #include "../libjte/libjte.h"
48 #endif
49 
50 #endif /* Xorriso_standalonE */
51 
52 
53 #include "libisoburn.h"
54 #include "isoburn.h"
55 
56 
57 /* The global list of isoburn objects. Usually there is only one. */
58 extern struct isoburn *isoburn_list_start; /* in isoburn.c */
59 
60 /* Default values for application provided msgs_submit methods.
61  To be attached to newly acquired drives.
62  Storage location is isoburn.c
63 */
65  (void *handle, int error_code, char msg_text[],
66  int os_errno, char severity[], int flag);
69 
70 
71 static int isoburn_emulate_toc(struct burn_drive *d, int flag);
72 
73 
74 int isoburn_initialize(char msg[1024], int flag)
75 {
76  int major, minor, micro, bad_match= 0, no_iso_init= 0;
77 
78 
79 /* First the ugly compile time checks for header version compatibility.
80  If everything matches, then they produce no C code. In case of mismatch,
81  intentionally faulty C code will be inserted.
82 */
83 
84 #ifdef iso_lib_header_version_major
85 /* The minimum requirement of libisoburn towards the libisofs header
86  at compile time is defined in libisoburn/libisoburn.h :
87  isoburn_libisofs_req_major
88  isoburn_libisofs_req_minor
89  isoburn_libisofs_req_micro
90  It gets compared against the version macros in libisofs/libisofs.h :
91  iso_lib_header_version_major
92  iso_lib_header_version_minor
93  iso_lib_header_version_micro
94  If the header is too old then the following code shall cause failure of
95  libisoburn compilation rather than to allow production of a program with
96  unpredictable bugs or memory corruption.
97  The compiler messages supposed to appear in this case are:
98  error: 'LIBISOFS_MISCONFIGURATION' undeclared (first use in this function)
99  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)
100  error: 'LIBISOFS_MISCONFIGURATION_' undeclared (first use in this function)
101 */
102 /* The indentation is an advise of man gcc to help old compilers ignoring */
103  #if isoburn_libisofs_req_major > iso_lib_header_version_major
104  #define Isoburn_libisofs_dot_h_too_olD 1
105  #endif
106  #if isoburn_libisofs_req_major == iso_lib_header_version_major && isoburn_libisofs_req_minor > iso_lib_header_version_minor
107  #define Isoburn_libisofs_dot_h_too_olD 1
108  #endif
109  #if isoburn_libisofs_req_minor == iso_lib_header_version_minor && isoburn_libisofs_req_micro > iso_lib_header_version_micro
110  #define Isoburn_libisofs_dot_h_too_olD 1
111  #endif
112 
113 #ifdef Isoburn_libisofs_dot_h_too_olD
114 LIBISOFS_MISCONFIGURATION = 0;
115 INTENTIONAL_ABORT_OF_COMPILATION__HEADERFILE_libisofs_dot_h_TOO_OLD__SEE_libisoburn_dot_h_AND_burn_wrap_dot_c = 0;
116 LIBISOFS_MISCONFIGURATION_ = 0;
117 #endif
118 
119 #endif /* iso_lib_header_version_major */
120 
121 /* The minimum requirement of libisoburn towards the libburn header
122  at compile time is defined in libisoburn/libisoburn.h :
123  isoburn_libburn_req_major
124  isoburn_libburn_req_minor
125  isoburn_libburn_req_micro
126  It gets compared against the version macros in libburn/libburn.h :
127  burn_header_version_major
128  burn_header_version_minor
129  burn_header_version_micro
130  If the header is too old then the following code shall cause failure of
131  cdrskin compilation rather than to allow production of a program with
132  unpredictable bugs or memory corruption.
133  The compiler messages supposed to appear in this case are:
134  error: 'LIBBURN_MISCONFIGURATION' undeclared (first use in this function)
135  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)
136  error: 'LIBBURN_MISCONFIGURATION_' undeclared (first use in this function)
137 */
138 
139 /* The indentation is an advise of man gcc to help old compilers ignoring */
140  #if isoburn_libburn_req_major > burn_header_version_major
141  #define Isoburn_libburn_dot_h_too_olD 1
142  #endif
143  #if isoburn_libburn_req_major == burn_header_version_major && isoburn_libburn_req_minor > burn_header_version_minor
144  #define Isoburn_libburn_dot_h_too_olD 1
145  #endif
146  #if isoburn_libburn_req_minor == burn_header_version_minor && isoburn_libburn_req_micro > burn_header_version_micro
147  #define Isoburn_libburn_dot_h_too_olD 1
148  #endif
149 
150 #ifdef Isoburn_libburn_dot_h_too_olD
151 LIBBURN_MISCONFIGURATION = 0;
152 INTENTIONAL_ABORT_OF_COMPILATION__HEADERFILE_libburn_dot_h_TOO_OLD__SEE_libisoburn_dot_h_and_burn_wrap_dot_h = 0;
153 LIBBURN_MISCONFIGURATION_ = 0;
154 #endif
155 
156 
157 #ifdef Xorriso_with_libjtE
158 
159 /* The minimum requirement of libisoburn towards the libjte header
160  at compile time is the same as the one of a usable libisofs towards libjte.
161  So the requirement is defined in libisofs/libisofs.h :
162  iso_libjte_req_major , iso_libjte_req_minor , iso_libjte_req_micro
163 */
164  /* The indentation is an advise of man gcc to help old compilers ignoring */
165  #if iso_libjte_req_major > LIBJTE_VERSION_MAJOR
166  #define Libisofs_libjte_dot_h_too_olD 1
167  #endif
168  #if iso_libjte_req_major == LIBJTE_VERSION_MAJOR && iso_libjte_req_minor > LIBJTE_VERSION_MINOR
169  #define Libisofs_libjte_dot_h_too_olD 1
170  #endif
171  #if iso_libjte_req_minor == LIBJTE_VERSION_MINOR && iso_libjte_req_micro > LIBJTE_VERSION_MICRO
172  #define Libisofs_libjte_dot_h_too_olD 1
173  #endif
174 
175 #ifdef Libisofs_libjte_dot_h_too_olD
176 LIBJTE_MISCONFIGURATION = 0;
177 INTENTIONAL_ABORT_OF_COMPILATION__HEADERFILE_libjte_dot_h_TOO_OLD__SEE_libisofs_dot_h_AND_burn_wrap.c_c = 0;
178 LIBJTE_MISCONFIGURATION_ = 0;
179 #endif
180 
181 #endif /* Xorriso_with_libjtE */
182 
183 
184 /* End of ugly compile time tests (scroll up for explanation) */
185 
186 
187  msg[0]= 0;
188 
189 #ifdef Xorriso_with_libjtE
190 
191  libjte__version(&major, &minor, &micro);
192  sprintf(msg + strlen(msg), "libjte-%d.%d.%d ", major, minor, micro);
193  if (libjte__is_compatible(LIBJTE_VERSION_MAJOR, LIBJTE_VERSION_MINOR,
194  LIBJTE_VERSION_MICRO, 0)) {
195  sprintf(msg+strlen(msg), "ok, ");
196  } else {
197  sprintf(msg + strlen(msg),
198  "- TOO OLD -, need at least libjte-%d.%d.%d ,\n",
199  LIBJTE_VERSION_MAJOR, LIBJTE_VERSION_MINOR,
200  LIBJTE_VERSION_MICRO);
201  bad_match= 1;
202  no_iso_init= 1; /* iso_init() will fail anyway */
203  }
204 
205 #endif /* Xorriso_with_libjtE */
206 
207  if(!no_iso_init) {
208  if(iso_init()<0) {
209  sprintf(msg+strlen(msg), "Cannot initialize libisofs\n");
210  return(0);
211  }
212  }
213  iso_lib_version(&major, &minor, &micro);
214  sprintf(msg+strlen(msg), "libisofs-%d.%d.%d ", major, minor, micro);
215 #ifdef iso_lib_header_version_major
216  if(iso_lib_is_compatible(iso_lib_header_version_major,
217  iso_lib_header_version_minor,
218  iso_lib_header_version_micro)) {
219  sprintf(msg+strlen(msg), "ok, ");
220  } else {
221  sprintf(msg+strlen(msg),"- TOO OLD -, need at least libisofs-%d.%d.%d ,\n",
222  iso_lib_header_version_major, iso_lib_header_version_minor,
223  iso_lib_header_version_micro);
224  bad_match= 1;
225  }
226 #else
227  if(iso_lib_is_compatible(isoburn_libisofs_req_major,
230  sprintf(msg+strlen(msg), "suspicious, ");
231  } else {
232  sprintf(msg+strlen(msg),"- TOO OLD -, need at least libisofs-%d.%d.%d ,\n",
235  bad_match= 1;
236  }
237 #endif /* ! iso_lib_header_version_major */
238 
239  if(!burn_initialize()) {
240  sprintf(msg+strlen(msg), "Cannot initialize libburn\n");
241  return(0);
242  }
243 
244  burn_version(&major, &minor, &micro);
245  sprintf(msg+strlen(msg), "libburn-%d.%d.%d ", major, minor, micro);
246  if(major > burn_header_version_major
247  || (major == burn_header_version_major
248  && (minor > burn_header_version_minor
249  || (minor == burn_header_version_minor
250  && micro >= burn_header_version_micro)))) {
251  sprintf(msg+strlen(msg), "ok, ");
252  } else {
253  sprintf(msg+strlen(msg), "- TOO OLD -, need at least libburn-%d.%d.%d ,\n",
254  burn_header_version_major, burn_header_version_minor,
255  burn_header_version_micro);
256  bad_match= 1;
257  }
258 
259  isoburn_version(&major, &minor, &micro);
260  sprintf(msg+strlen(msg), "for libisoburn-%d.%d.%d", major, minor, micro);
261  if(bad_match)
262  return(0);
263 
264  isoburn_destroy_all(&isoburn_list_start, 0); /* isoburn_list_start= NULL */
265  return(1);
266 }
267 
268 
269 /* API @since 0.1.0 */
270 int isoburn_libisofs_req(int *major, int *minor, int *micro)
271 {
272  *major= iso_lib_header_version_major;
273  *minor= iso_lib_header_version_minor;
274  *micro= iso_lib_header_version_micro;
275  return(1);
276 }
277 
278 
279 /* API @since 0.1.0 */
280 int isoburn_libburn_req(int *major, int *minor, int *micro)
281 {
282  *major= burn_header_version_major;
283  *minor= burn_header_version_minor;
284  *micro= burn_header_version_micro;
285  return(1);
286 }
287 
288 
289 /* API @since 0.6.4 */
290 int isoburn_libjte_req(int *major, int *minor, int *micro)
291 {
292 #ifdef Xorriso_with_libjtE
293  *major= LIBJTE_VERSION_MAJOR;
294  *minor= LIBJTE_VERSION_MINOR;
295  *micro= LIBJTE_VERSION_MICRO;
296 #else
297  *major= *minor= *micro= 0;
298 #endif /* ! Xorriso_with_libjtE */
299  return(1);
300 }
301 
302 
303 int isoburn_set_msgs_submit(int (*msgs_submit)(void *handle, int error_code,
304  char msg_text[], int os_errno,
305  char severity[], int flag),
306  void *submit_handle, int submit_flag, int flag)
307 {
311  return(1);
312 }
313 
314 
315 int isoburn_is_intermediate_dvd_rw(struct burn_drive *d, int flag)
316 {
317  int profile, ret= 0, format_status, num_formats;
318  char profile_name[80];
319  enum burn_disc_status s;
320  off_t format_size= -1;
321  unsigned bl_sas;
322 
324  ret= burn_disc_get_profile(d, &profile, profile_name);
325  if(ret>0 && profile==0x13)
326  ret= burn_disc_get_formats(d, &format_status, &format_size,
327  &bl_sas, &num_formats);
328  if(ret>0 && profile==0x13 && s==BURN_DISC_BLANK &&
329  format_status==BURN_FORMAT_IS_UNKNOWN)
330  return(1);
331  return(0);
332 }
333 
334 
335 /** Examines the medium and sets appropriate emulation if needed.
336  @param flag bit0= pretent blank on overwritable media
337  bit3= if the drive reports a -ROM profile then try to read
338  table of content by scanning for ISO image headers.
339  bit4= do not emulate TOC on overwritable media
340  bit5= ignore ACL from external filesystems
341  bit6= ignore POSIX Extended Attributes from external filesystems
342  bit7= pretend -ROM and scan for table of content
343  bit9= when scanning for ISO 9660 sessions on overwritable
344  media: Do not demand a valid superblock at LBA 0
345  and scan until end of medium.
346  bit10= if not bit6: accept all xattr namespaces from external
347  filesystems, not only "user.".
348 */
349 static int isoburn_welcome_media(struct isoburn **o, struct burn_drive *d,
350  int flag)
351 {
352  int ret, profile, readonly= 0, role, random_access;
353  int emulation_started= 0;
354  struct burn_multi_caps *caps= NULL;
355  struct isoburn_toc_entry *t;
356  char profile_name[80];
357  struct isoburn_toc_disc *disc= NULL;
358  struct isoburn_toc_session **sessions;
359  struct isoburn_toc_track **tracks;
360  int num_sessions= 0, num_tracks= 0, track_count= 0, session_no= 0;
361  char msg[80];
362  enum burn_disc_status s;
363 
364 #ifndef Hardcoded_cd_rW
365  int lba, nwa;
366 #endif
367 
368  s= burn_disc_get_status(d);
369  profile_name[0]= 0;
370  ret= burn_disc_get_profile(d, &profile, profile_name);
371  if(ret<=0)
372  profile= 0x00;
373  ret= burn_disc_get_multi_caps(d, BURN_WRITE_NONE, &caps, 0);
374  if(ret<0) /*== 0 is read-only medium, but it is too early to reject it here */
375  goto ex;
376  if(ret==0 || (flag & 128))
377  readonly= 1;
378  if(flag & 128)
379  flag = (flag & ~ 16) | 8;
380 
381  ret= isoburn_find_emulator(o, d, 0);
382  if(ret >= 0 && *o != NULL)
383  isoburn_destroy(o, 0);
384  ret= isoburn_new(o, 0);
385  if(ret<=0)
386  goto ex;
387  (*o)->drive= d;
388  (*o)->msgs_submit= libisoburn_default_msgs_submit;
389  (*o)->msgs_submit_handle= libisoburn_default_msgs_submit_handle;
390  (*o)->msgs_submit_flag= libisoburn_default_msgs_submit_flag;
391  iso_image_set_ignore_aclea((*o)->image,
392  ((flag >> 5 ) & 3) | ((!!(flag & 1024)) << 3));
393 
394 #ifdef Hardcoded_cd_rW
395  /* <<< A70929 : hardcoded CD-RW with fabricated -msinfo */
396  caps->start_adr= 0;
397  (*o)->fabricated_disc_status= BURN_DISC_APPENDABLE;
398 #endif
399 
400  role= burn_drive_get_drive_role(d);
401  random_access= caps->start_adr || role == 4;
402  if(random_access)
403  (*o)->emulation_mode= 1;
404  if(random_access && !readonly) { /* set emulation to overwritable */
406  if(ret>0) {
407  (*o)->min_start_byte= 0;
408  (*o)->nwa= 0;
409  (*o)->zero_nwa= 0;
410  }
411  if((flag & 1) && role != 4 && role != 5) {
412  (*o)->nwa= (*o)->zero_nwa;
413  (*o)->fabricated_disc_status= BURN_DISC_BLANK;
414  } else {
415  ret= isoburn_start_emulation(*o, 0);
416  if(ret<=0) {
417  (*o)->emulation_mode= -1;
418  goto ex;
419  }
420  emulation_started= 1;
421  /* try to read emulated toc */
422  ret= isoburn_emulate_toc(d, (flag & 16) | ((!!(flag & 512)) << 1));
423  if(ret<0) {
424  (*o)->emulation_mode= -1;
425  goto ex;
426  }
427  }
428  } else {
429 
430  /* >>> recognize unsuitable media (but allow read-only media) */;
431 
432  if(readonly && s != BURN_DISC_EMPTY) {
433 
434  /* >>> ts B10712: This maps BURN_DISC_UNSUITABLE to BURN_DISC_FULL
435  which can hardly be correct in general.
436  ??? What reason does this have ?
437  */
438  (*o)->fabricated_disc_status= BURN_DISC_FULL;
439 
440  /* This might be an overwritable medium in a -ROM drive.
441  Pitfall:
442  Multi-session media which bear a xorriso image for overwritables
443  in their first session would get a TOC of that first image rather
444  than of the medium.
445  It is not possible to distinguish a BD-RE from a single session
446  BD-R with an image for overwritables. But as soon as the medium
447  bears 2 logical tracks it cannot be overwritable.
448  So count the number of tracks first.
449  */
451  if(disc != NULL) {
452  sessions= isoburn_toc_disc_get_sessions(disc, &num_sessions);
453  for(session_no= 0; session_no < num_sessions; session_no++) {
454  tracks= isoburn_toc_session_get_tracks(sessions[session_no],
455  &num_tracks);
456  if(tracks != NULL)
457  track_count+= num_tracks;
458  }
459  isoburn_toc_disc_free(disc);
460  }
461 
462  sprintf(msg, "ROM medium has libburn track count = %d", track_count);
463  isoburn_msgs_submit(*o, 0x00060000, msg, 0, "DEBUG", 0);
464 
465  if((flag & 16) || track_count >= 2) {
466  ret= 0; /* toc emulation off, or not overwritable */
467  } else {
468  ret= isoburn_start_emulation(*o, 1);
469  if(ret<=0) {
470  (*o)->emulation_mode= -1;
471  goto ex;
472  }
473  emulation_started= 1;
474  ret= isoburn_emulate_toc(d, 1 | ((!!(flag & 512)) << 1));
475  if(ret<0)
476  goto ex;
477  else if(ret > 0)
478  (*o)->emulation_mode= 1;
479  }
480  if(ret == 0 && (profile != 0x08 || (flag & 128)) && (flag & 8)) {
481  /* This might also be multi-session media which do not
482  get shown with a decent TOC.
483  CD-R TOC (profile 0x08) can be trusted. Others not.
484  Do a scan search of ISO headers.
485  */
486  if(!emulation_started) {
487  ret= isoburn_start_emulation(*o, 1);
488  if(ret<=0) {
489  (*o)->emulation_mode= -1;
490  goto ex;
491  }
492  }
493  ret= isoburn_emulate_toc(d, 1 | 2);
494  if(ret<0)
495  goto ex;
496  if(ret>0) { /* point msc1 to last session */
497  if((*o)->toc!=NULL) {
498  for(t= (*o)->toc; t->next!=NULL; t= t->next)
499  ; /* clang wants newline in empty loops */
500  (*o)->fabricated_msc1= t->start_lba;
501  }
502  }
503  }
504  }
505 #ifdef Hardcoded_cd_rW
506  (*o)->nwa= Hardcoded_cd_rw_nwA;
507 #else
508  ret= burn_disc_track_lba_nwa(d, NULL, 0, &lba, &nwa);
509  if(ret>0)
510  (*o)->nwa= nwa;
511  if((*o)->nwa < (*o)->zero_nwa)
512  (*o)->zero_nwa= 0;
513 #endif
514 
515  }
516 
517  ret= 1;
518 ex:
519  if(caps!=NULL)
520  burn_disc_free_multi_caps(&caps);
521  return(ret);
522 }
523 
524 
525 /**
526  @param flag bit0= load
527  bit1= regard overwritable media as blank
528  bit2= if the drive is a regular disk file: truncate it to
529  the write start address
530  bit3= if the drive reports a -ROM profile then try to read
531  table of content by scanning for ISO image headers.
532  (depending on media type and drive state this might
533  help or it might make the resulting toc even worse)
534  bit4= do not emulate TOC on overwritable media
535  bit5= ignore ACL from external filesystems
536  bit6= ignore POSIX Extended Attributes from external filesystems
537  bit7= pretend -ROM profile and scan for table of content
538  bit8= re-assess (*drive_infos)[0] rather than acquiring adr
539  bit9= when scanning for ISO 9660 sessions on overwritable
540  media: Do not demand a valid superblock at LBA 0
541  and scan until end of medium.
542  bit10= if not bit6: accept all xattr namespaces from external
543  filesystems, not only "user.".
544 */
545 int isoburn_drive_aquire(struct burn_drive_info *drive_infos[],
546  char *adr, int flag)
547 {
548  int ret, drive_grabbed= 0;
549  struct isoburn *o= NULL;
550  int conv_ret;
551  char *libburn_drive_adr= NULL;
552 
553  /* Should be obsolete by new drive addressing of libburn-0.5.2 */
554  /* but helps with kernel 2.4 to use /dev/sr */
555  libburn_drive_adr= calloc(1, BURN_DRIVE_ADR_LEN);
556  if(libburn_drive_adr == NULL)
557  {ret= -1; goto ex;}
558  conv_ret= burn_drive_convert_fs_adr(adr, libburn_drive_adr);
559  if(conv_ret<=0)
560  strcpy(libburn_drive_adr, adr);
561 
562  if(flag & 256)
563  ret= burn_drive_re_assess((*drive_infos)[0].drive, 0);
564  else
565  ret= burn_drive_scan_and_grab(drive_infos, libburn_drive_adr, flag&1);
566  if(ret<=0)
567  goto ex;
568  drive_grabbed= 1;
569  ret= isoburn_welcome_media(&o, (*drive_infos)[0].drive,
570  (flag & (8 | 16 | 32 | 64 | 128 | 512 | 1024)) |
571  !!(flag&2));
572  if(ret<=0)
573  goto ex;
574 
575  if(flag&4) {
576  ret= isoburn_find_emulator(&o, (*drive_infos)[0].drive, 0);
577  if(ret>0 && o!=NULL)
578  o->truncate= 1;
579  }
580 
581  ret= 1;
582 ex:
583  if(ret<=0) {
584  if(drive_grabbed)
585  burn_drive_release((*drive_infos)[0].drive, 0);
586  isoburn_destroy(&o, 0);
587  }
588  if(libburn_drive_adr != NULL)
589  free(libburn_drive_adr);
590  return(ret);
591 }
592 
593 
594 int isoburn_drive_scan_and_grab(struct burn_drive_info *drive_infos[],
595  char *adr, int load)
596 {
597  int ret;
598 
599  ret= isoburn_drive_aquire(drive_infos, adr, !!load);
600  return(ret);
601 }
602 
603 
604 int isoburn_drive_grab(struct burn_drive *drive, int load)
605 {
606  int ret;
607  struct isoburn *o= NULL;
608 
609  ret= burn_drive_grab(drive, load);
610  if(ret<=0)
611  goto ex;
612  ret= isoburn_welcome_media(&o, drive, 0);
613  if(ret<=0)
614  goto ex;
615 
616  ret= 1;
617 ex:
618  if(ret<=0)
619  isoburn_destroy(&o,0);
620  return(ret);
621 }
622 
623 
624 /** Retrieve medium emulation and eventual isoburn emulator of drive.
625  @return -1 unsuitable medium, 0 generic medium, 1 emulated medium.
626 */
628  struct burn_drive *drive, int flag)
629 {
630  int ret;
631 
632  ret= isoburn_find_by_drive(pt, drive, 0);
633  if(ret<=0)
634  return(0);
635  if((*pt)->emulation_mode==-1) {
636  isoburn_msgs_submit(*pt, 0x00060000,
637  "Unsuitable drive and medium state", 0, "FAILURE", 0);
638  return(-1);
639  }
640  if((*pt)->emulation_mode==0)
641  return(0);
642  return(1);
643 }
644 
645 
646 enum burn_disc_status isoburn_disc_get_status(struct burn_drive *drive)
647 {
648  int ret;
649  struct isoburn *o;
650 
651  ret= isoburn_find_emulator(&o, drive, 0);
652  if(ret<0)
653  return(BURN_DISC_UNSUITABLE);
654  if(o!=NULL)
655  if(o->fabricated_disc_status!=BURN_DISC_UNREADY)
656  return(o->fabricated_disc_status);
657  if(ret==0)
658  return(burn_disc_get_status(drive));
659 
660  /* emulated status */
661  if(o->emulation_mode==-1)
662  return(BURN_DISC_UNSUITABLE);
663  if(o->nwa>o->zero_nwa)
664  return(BURN_DISC_APPENDABLE);
665  return(BURN_DISC_BLANK);
666 }
667 
668 
670 {
671  int ret;
672  struct isoburn *o;
673 
674  ret= isoburn_find_emulator(&o, drive, 0);
675  if(ret > 0 && o != NULL)
676  o->fabricated_disc_status= BURN_DISC_FULL;
677  ret= burn_disc_pretend_full_uncond(drive);
678  return(ret);
679 }
680 
681 
682 int isoburn_disc_erasable(struct burn_drive *d)
683 {
684  int ret;
685  struct isoburn *o;
686 
687  ret= isoburn_find_emulator(&o, d, 0);
688  if(ret>0)
689  if(o->emulation_mode==1)
690  return(1);
691  return burn_disc_erasable(d);
692 }
693 
694 
695 static int isoburn_is_overwritable(struct burn_drive *drive, int flag)
696 {
697  char name[80];
698  int profile, ret;
699 
700  ret= burn_disc_get_profile(drive, &profile, name);
701  if(ret <= 0)
702  return(0);
703  if(profile == 0x12 || profile == 0x13 || profile == 0x1a || profile == 0x43)
704  return(1);
705  return(0);
706 
707 }
708 
709 
710 void isoburn_disc_erase(struct burn_drive *drive, int fast)
711 {
712  int ret, do_pseudo_blank= 0, role;
713  struct isoburn *o;
714  enum burn_disc_status s;
715  char *zero_buffer= NULL;
716  struct burn_multi_caps *caps= NULL;
717 
718  zero_buffer= calloc(1, Libisoburn_target_head_sizE);
719  if(zero_buffer == NULL) {
720  /* To cause a negative reply with burn_drive_wrote_well() */
721  burn_drive_cancel(drive);
722  goto ex;
723  }
724 
725  ret= isoburn_find_emulator(&o, drive, 0);
726  if(ret>0) {
727  if(o->emulation_mode==-1) {
728  /* To cause a negative reply with burn_drive_wrote_well() */
729  burn_drive_cancel(drive);
730  goto ex;
731  }
732  role = burn_drive_get_drive_role(drive);
733  if (role == 5) {
734  /* libburn will truncate the random-access write-only file
735  to zero size and change its state */
736  burn_disc_erase(drive, fast);
737  o->fabricated_disc_status= burn_disc_get_status(drive);
738  o->nwa= o->zero_nwa= 0;
739  goto ex;
740  }
741  if(o->emulation_mode > 0) { /* might be readonly with emulated sessions */
742  ret= burn_disc_get_multi_caps(drive, BURN_WRITE_NONE, &caps, 0);
743  if(ret <= 0) /* Maybe because of burn_disc_pretend_full() */
744  do_pseudo_blank= isoburn_is_overwritable(drive, 0); /* known profiles */
745  else if(caps->start_adr)
746  do_pseudo_blank= 1;
747  }
748  if(do_pseudo_blank) {
749  s= isoburn_disc_get_status(drive);
750  if(s==BURN_DISC_FULL) { /* unknown data format in first 64 kB */
751  memset(zero_buffer, 0, Libisoburn_target_head_sizE);
752  ret= burn_random_access_write(drive, (off_t) 0, zero_buffer,
753  (off_t) Libisoburn_target_head_sizE, 1);
754  } else {
755  ret= isoburn_invalidate_iso(o, 0);
756  }
757  if(ret<=0)
758  burn_drive_cancel(drive); /* mark run as failure */
759  goto ex;
760  }
761  }
762  burn_disc_erase(drive, fast);
763 ex:;
764  if(caps!=NULL)
765  burn_disc_free_multi_caps(&caps);
766  if(zero_buffer != NULL)
767  free(zero_buffer);
768 }
769 
770 
771 off_t isoburn_disc_available_space(struct burn_drive *d,
772  struct burn_write_opts *opts)
773 {
774  int ret;
775  struct isoburn *o;
776  struct burn_write_opts *eff_opts= NULL, *local_opts= NULL;
777  enum burn_disc_status s;
778  off_t avail;
779 
780  eff_opts= opts;
781  ret= isoburn_find_emulator(&o, d, 0);
782  if(ret>0 && o!=NULL)
783  if(o->emulation_mode!=0) {
785  if(s==BURN_DISC_FULL) /* unknown data format in first 64 kB */
786  return((off_t) 0);
787  local_opts= burn_write_opts_new(d);
788  eff_opts= local_opts;
789  burn_write_opts_set_start_byte(eff_opts, ((off_t) o->nwa) * (off_t) 2048);
790  }
791  avail= burn_disc_available_space(d, eff_opts);
792  if(local_opts!=NULL)
793  burn_write_opts_free(local_opts);
794  local_opts= NULL;
795  return(avail);
796 }
797 
798 
799 int isoburn_disc_get_msc1(struct burn_drive *d, int *start_lba)
800 {
801  int ret;
802  struct isoburn *o;
803 
804 #ifdef Hardcoded_cd_rW
805  /* <<< A70929 : hardcoded CD-RW with fabricated -msinfo */
806  *start_lba= Hardcoded_cd_rw_c1;
807  return(1);
808 #endif
809 
810  if(isoburn_disc_get_status(d)!=BURN_DISC_APPENDABLE &&
811  isoburn_disc_get_status(d)!=BURN_DISC_FULL) {
812  isoburn_msgs_submit(NULL, 0x00060000,
813  "Medium contains no recognizable data", 0, "SORRY", 0);
814  return(0);
815  }
816  ret= isoburn_find_emulator(&o, d, 0);
817  if(ret<0)
818  return(0);
819  if(o->fabricated_msc1>=0) {
820  *start_lba= o->fabricated_msc1;
821  return(1);
822  }
823  if(ret>0) if(o->emulation_mode>0) {
824  *start_lba= 0;
825  return(1);
826  }
827  return(burn_disc_get_msc1(d, start_lba));
828 }
829 
830 
831 int isoburn_disc_track_lba_nwa(struct burn_drive *d,
832  struct burn_write_opts *opts,
833  int trackno, int *lba, int *nwa)
834 {
835  int ret;
836  struct isoburn *o;
837  enum burn_disc_status s;
838 
839 #ifdef Hardcoded_cd_rW
840  /* <<< A70929 : hardcoded CD-RW with fabricated -msinfo */
841  *lba= Hardcoded_cd_rw_c1;
842  *nwa= Hardcoded_cd_rw_nwA;
843  return(1);
844 #endif
845 
846  *nwa= *lba= 0;
847  ret= isoburn_find_emulator(&o, d, 0);
848  if(ret<0)
849  return(0);
850  if(ret>0) if(o->emulation_mode>0) {
851  *lba= 0;
852  *nwa= o->nwa;
853  return(1);
854  }
855  if(burn_drive_get_drive_role(d) != 1)
856  return(1);
857 
859  if(s == BURN_DISC_BLANK) /* We do not believe in anything but nwa = lba = 0 */
860  return(1);
861  return(burn_disc_track_lba_nwa(d, opts, trackno, lba, nwa));
862 }
863 
864 
865 int isoburn_get_msc2(struct isoburn *o,
866  struct burn_write_opts *opts, int *msc2, int flag)
867 {
868  int ret, lba, nwa;
869 
870  if(o->fabricated_msc2>=0)
871  *msc2= o->fabricated_msc2;
872  else {
873  ret= isoburn_disc_track_lba_nwa(o->drive, opts, 0, &lba, &nwa);
874  if(ret<=0)
875  return(ret);
876  *msc2= nwa;
877  }
878  return(1);
879 }
880 
881 /* @param flag bit0= truncate (else do not truncate)
882  bit1= do not warn if call is inappropriate to drive
883  bit2= only set if truncation is currently enabled
884 */
885 int isoburn_set_truncate(struct burn_drive *drive, int flag)
886 {
887  int ret;
888  struct isoburn *o;
889 
890  ret= isoburn_find_emulator(&o, drive, 0);
891  if(ret < 0)
892  return ret;
893  if(o == NULL) {
894  if(!(flag & (2 | 4)))
895  isoburn_msgs_submit(o, 0x00060000,
896  "Drive type or role is inappropriate for truncation", 0, "WARNING", 0);
897  return(0);
898  }
899  if(o->truncate || !(flag & 4))
900  o->truncate= flag & 1;
901  return(1);
902 }
903 
904 
905 void isoburn_disc_write(struct burn_write_opts *opts, struct burn_disc *disc)
906 {
907  int ret;
908  off_t nwa= 0;
909  struct isoburn *o;
910  struct burn_drive *drive;
911  char *reasons= NULL, *msg= NULL, *adr= NULL;
912  struct stat stbuf;
913  enum burn_write_types write_type;
914 
915  drive= burn_write_opts_get_drive(opts);
916 
917  reasons= calloc(1, BURN_REASONS_LEN);
918  msg= calloc(1, 160+BURN_REASONS_LEN);
919  adr= calloc(1, BURN_DRIVE_ADR_LEN);
920  if(reasons == NULL || msg == NULL || adr == NULL) {
921  /* To cause a negative reply with burn_drive_wrote_well() */
922  burn_drive_cancel(drive);
923  goto ex;
924  }
925 
926  ret= isoburn_find_emulator(&o, drive, 0);
927  if(ret<0)
928  goto ex;
929  if(o == NULL) {
930  sprintf(msg,
931  "Program error: Cannot find isoburn object associated to the drive");
932  isoburn_msgs_submit(o, 0x00060000, msg, 0, "FAILURE", 0);
933  burn_drive_cancel(drive);
934  goto ex;
935  }
936  o->wrote_well= -1;
937  if(o->emulation_mode!=0) {
938  burn_write_opts_set_multi(opts, 0);
939  if(o->emulation_mode>0 && o->nwa >= 0) {
940  nwa= o->nwa;
941 
942  /* This caters for unwritten formatted DVD-RW. They need to be written
943  sequentially on the first use. Only written areas are random access.
944  If the first session is not written to LBA 0, then re-opening of
945  formatting and padding is needed.
946  This can be done. But when the track gets closed after padding,
947  this lasts a long time. There is a high risk that an app will not
948  poll the message queue while waiting for isoburn_disc_write() to
949  return. The pacifier loop usually happens only afterwards.
950  So automatic formatting might cause a nervous clueless user.
951  */
952  ret= isoburn_is_intermediate_dvd_rw(drive, 0);
953  if(ret>0 && nwa>0 && nwa <= o->zero_nwa) {
954  /* actually this should not happen since such media get recognized
955  by isoburn_welcome_media and o->zero_nwa gets set to 0
956  */
957  sprintf(msg,
958  "DVD-RW insufficiently formatted. (Intermediate State, size unknown)");
959  isoburn_msgs_submit(o, 0x00060000, msg, 0, "FAILURE", 0);
960  sprintf(msg,
961  "It might help to first deformat it and then format it again");
962  isoburn_msgs_submit(o, 0x00060000, msg, 0, "HINT", 0);
963  burn_drive_cancel(drive); /* mark run as failure */
964  goto ex;
965  }
966  /* end of DVD-RW oriented check */
967  burn_write_opts_set_start_byte(opts, nwa * (off_t) 2048);
968  }
969  }
970 
971  if(o->do_tao) {
972  if (o->do_tao > 0)
973  burn_write_opts_set_write_type(opts, BURN_WRITE_TAO, BURN_BLOCK_MODE1);
974  else
975  burn_write_opts_set_write_type(opts, BURN_WRITE_SAO, BURN_BLOCK_SAO);
976 
977  ret = burn_precheck_write(opts, disc, reasons, 0);
978  if(ret <= 0) {
979  sprintf(msg, "Cannot set write type %s for this medium.",
980  o->do_tao > 0 ? "TAO" : "SAO");
981  sprintf(msg + strlen(msg), "Reasons given:\n %s", reasons);
982  goto no_write_type;
983  }
984  sprintf(msg, "Explicitly chosen write type: %s",
985  o->do_tao > 0 ? "TAO" : "SAO");
986  isoburn_msgs_submit(o, 0x00060000, msg, 0, "NOTE", 0);
987  } else {
988  write_type= burn_write_opts_auto_write_type(opts, disc, reasons, 0);
989  if (write_type == BURN_WRITE_NONE) {
990  sprintf(msg, "Failed to find a suitable write type:\n%s", reasons);
991 no_write_type:;
992  isoburn_msgs_submit(o, 0x00060000, msg, 0, "FAILURE", 0);
993  if(o!=NULL)
994  o->wrote_well= 0;
995  /* To cause a negative reply with burn_drive_wrote_well() */
996  burn_drive_cancel(drive);
997  goto ex;
998  }
999 
1000  sprintf(reasons, "%d", (int) write_type);
1001  sprintf(msg, "Write_type = %s\n",
1002  (write_type == BURN_WRITE_SAO ? "SAO" :
1003  (write_type == BURN_WRITE_TAO ? "TAO" : reasons)));
1004  isoburn_msgs_submit(o, 0x00060000, msg, 0, "DEBUG", 0);
1005  }
1006 
1007 #ifdef Hardcoded_cd_rW
1008  /* <<< A70929 : hardcoded CD-RW with fabricated -msinfo */
1009  fprintf(stderr, "Setting write address to LBA %d\n", Hardcoded_cd_rw_nwA);
1010  burn_write_opts_set_start_byte(opts,
1011  ((off_t) Hardcoded_cd_rw_nwA) * (off_t) 2048);
1012 #endif
1013 
1014  if(o->truncate) {
1015  ret= burn_drive_get_drive_role(drive);
1016  if(ret == 2 || ret == 5) {
1017  ret= burn_drive_d_get_adr(drive, adr);
1018  if(ret>0) {
1019  ret= lstat(adr, &stbuf);
1020  if(ret!=-1)
1021  if(S_ISREG(stbuf.st_mode))
1022  ret= truncate(adr, nwa * (off_t) 2048);
1023  /* (result of truncate intentionally ignored) */
1024  }
1025  }
1026  }
1027 
1028  burn_disc_write(opts, disc);
1029 ex:;
1030  if(reasons != NULL)
1031  free(reasons);
1032  if(msg != NULL)
1033  free(msg);
1034  if(adr != NULL)
1035  free(adr);
1036 }
1037 
1038 
1039 void isoburn_drive_release(struct burn_drive *drive, int eject)
1040 {
1041  int ret;
1042  struct isoburn *o;
1043 
1044  ret= isoburn_find_emulator(&o, drive, 0);
1045  if(ret<0)
1046  return;
1047  if(o!=NULL) {
1048  isoburn_destroy(&o, 0);
1049  }
1050  burn_drive_release(drive, eject);
1051 }
1052 
1053 
1054 void isoburn_finish(void)
1055 {
1057  burn_finish();
1058  iso_finish();
1059 }
1060 
1061 
1062 int isoburn_needs_emulation(struct burn_drive *drive)
1063 {
1064  int ret;
1065  struct isoburn *o;
1066  enum burn_disc_status s;
1067 
1069  if(s!=BURN_DISC_BLANK && s!=BURN_DISC_APPENDABLE)
1070  return(-1);
1071  ret= isoburn_find_emulator(&o, drive, 0);
1072  if(ret<0)
1073  return(-1);
1074  if(ret>0)
1075  if(o->emulation_mode>0)
1076  return(1);
1077  return(0);
1078 }
1079 
1080 
1081 int isoburn_set_start_byte(struct isoburn *o, off_t value, int flag)
1082 {
1083  int ret;
1084  struct burn_drive *drive = o->drive;
1085  struct burn_multi_caps *caps= NULL;
1086 
1087  ret= burn_disc_get_multi_caps(drive, BURN_WRITE_NONE, &caps, 0);
1088  if(ret<=0)
1089  goto ex;
1090  if(!caps->start_adr) {
1091  isoburn_msgs_submit(o, 0x00060000,
1092  "Cannot set start byte address with this type of media",
1093  0, "FAILURE", 0);
1094  {ret= 0; goto ex;}
1095  }
1096  o->min_start_byte= value;
1097  if(value % caps->start_alignment)
1098  value+= caps->start_alignment - (value % caps->start_alignment);
1099  o->nwa= value/2048;
1100  if(o->nwa < o->zero_nwa)
1101  o->zero_nwa= 0;
1102  /* If suitable for media alignment, round up to Libisoburn_nwa_alignemenT */
1103  if((o->nwa % Libisoburn_nwa_alignemenT) &&
1104  ((Libisoburn_nwa_alignemenT*2048) % caps->start_alignment)==0 )
1106  ret= 1;
1107 ex:
1108  if(caps!=NULL)
1109  burn_disc_free_multi_caps(&caps);
1110  return(ret);
1111 }
1112 
1113 
1114 int isoburn_get_min_start_byte(struct burn_drive *d, off_t *start_byte,
1115  int flag)
1116 {
1117  int ret;
1118  struct isoburn *o;
1119 
1120  ret= isoburn_find_emulator(&o, d, 0);
1121  if(ret<0)
1122  return(-1);
1123  if(ret==0)
1124  return(0);
1125  *start_byte= o->min_start_byte;
1126  if(o->min_start_byte<=0)
1127  return(0);
1128  return(1);
1129 }
1130 
1131 
1132 int isoburn_drive_wrote_well(struct burn_drive *d)
1133 {
1134  int ret;
1135  struct isoburn *o;
1136 
1137  ret= isoburn_find_emulator(&o, d, 0);
1138  if(ret<0)
1139  return(-1);
1140  if(o!=NULL)
1141  if(o->wrote_well>=0)
1142  return(o->wrote_well);
1143  ret= burn_drive_wrote_well(d);
1144  return ret;
1145 }
1146 
1147 
1148 int isoburn_get_fifo_status(struct burn_drive *d, int *size, int *free_bytes,
1149  char **status_text)
1150 {
1151  int ret;
1152  struct isoburn *o;
1153  size_t hsize= 0, hfree_bytes= 0;
1154 
1155  ret= isoburn_find_emulator(&o, d, 0);
1156  if(ret<0)
1157  return(-1);
1158 
1159  if(o==NULL)
1160  return(-1);
1161  if(o->iso_source==NULL)
1162  return(-1);
1163  ret= iso_ring_buffer_get_status(o->iso_source, &hsize, &hfree_bytes);
1164  if(hsize > 1024*1024*1024)
1165  *size= 1024*1024*1024;
1166  else
1167  *size= hsize;
1168  if(hfree_bytes > 1024*1024*1024)
1169  *free_bytes= 1024*1024*1024;
1170  else
1171  *free_bytes= hfree_bytes;
1172  *status_text= "";
1173  if(ret==0)
1174  *status_text= "standby";
1175  else if(ret==1)
1176  *status_text= "active";
1177  else if(ret==2)
1178  *status_text= "ending";
1179  else if(ret==3)
1180  *status_text= "failing";
1181  else if(ret==4)
1182  *status_text= "unused";
1183  else if(ret==5)
1184  *status_text= "abandoned";
1185  else if(ret==6)
1186  *status_text= "ended";
1187  else if(ret==7)
1188  *status_text= "aborted";
1189  return(ret);
1190 }
1191 
1192 
1193 /* @param flag bit0= -reserved-
1194  bit1= this is a libburn severity
1195 */
1196 int isoburn__sev_to_text(int severity, char **severity_name,
1197  int flag)
1198 {
1199  int ret;
1200 
1201  ret= iso_sev_to_text(severity, severity_name);
1202  if(ret>0)
1203  return(ret);
1204  ret= burn_sev_to_text(severity, severity_name, 0);
1205  return(ret);
1206 }
1207 
1208 
1209 int isoburn__text_to_sev(char *severity_name, int *severity_number, int flag)
1210 {
1211  int ret= 1;
1212 
1213  ret= iso_text_to_sev(severity_name, severity_number);
1214  if(ret>0)
1215  return(ret);
1216  ret= burn_text_to_sev(severity_name, severity_number, 0);
1217  return(ret);
1218 }
1219 
1220 
1221 int isoburn_report_iso_error(int iso_error_code, char msg_text[], int os_errno,
1222  char min_severity[], int flag)
1223 {
1224  int error_code, iso_sev, min_sev, ret;
1225  char *sev_text_pt, *msg_text_pt= NULL;
1226 
1227  error_code= iso_error_get_code(iso_error_code);
1228  if(error_code < 0x00030000 || error_code >= 0x00040000)
1229  error_code= (error_code & 0xffff) | 0x00050000;
1230 
1231  if(iso_error_code<0)
1232  msg_text_pt= (char *) iso_error_to_msg(iso_error_code);
1233  if(msg_text_pt==NULL)
1234  msg_text_pt= msg_text;
1235  iso_sev= iso_error_get_severity(iso_error_code);
1236  sev_text_pt= min_severity;
1237  isoburn__text_to_sev(min_severity, &min_sev, 0);
1238  if(min_sev < iso_sev)
1239  isoburn__sev_to_text(iso_sev, &sev_text_pt, 0);
1240  ret= iso_msgs_submit(error_code, msg_text_pt, os_errno, sev_text_pt, 0);
1241  return(ret);
1242 }
1243 
1244 
1245 /* @param flag bit0-7: info return mode
1246  0= do not return anything in info (do not even touch it)
1247  1= copy volume id to info (info needs 33 bytes)
1248  2= do not touch info (caller will copy 64 kB header to it)
1249  bit14= -reserved -
1250  bit15= -reserved-
1251  @return 1 seems to be a valid ISO image , 0 format not recognized, <0 error
1252 */
1253 int isoburn_read_iso_head_parse(unsigned char *data,
1254  int *image_blocks, char *info, int flag)
1255 {
1256  int i, info_mode;
1257 
1258  /* is this an ISO image ? */
1259  if(data[0]!=1)
1260  return(0);
1261  if(strncmp((char *) (data+1),"CD001",5)!=0)
1262  return(0);
1263  /* believe so */
1264 
1265  *image_blocks= data[80] | (data[81]<<8) | (data[82]<<16) | (data[83]<<24);
1266  info_mode= flag&255;
1267  if(info_mode==0) {
1268  ;
1269  } else if(info_mode==1) {
1270  strncpy(info, (char *) (data+40), 32);
1271  info[32]= 0;
1272  for(i= strlen(info)-1; i>=0; i--)
1273  if(info[i]!=' ')
1274  break;
1275  else
1276  info[i]= 0;
1277  } else if(info_mode==2) {
1278  ;
1279  } else {
1280  isoburn_msgs_submit(NULL, 0x00060000,
1281  "Program error: Unknown info mode with isoburn_read_iso_head()",
1282  0, "FATAL", 0);
1283  return(-1);
1284  }
1285  return(1);
1286 }
1287 
1288 
1289 /* API
1290  @param flag bit0-7: info return mode
1291  0= do not return anything in info (do not even touch it)
1292  1= copy volume id to info (info needs 33 bytes)
1293  2= copy 64 kB header to info (needs 65536 bytes)
1294  bit13= do not read head from media but use first 64 kB from info
1295  bit14= check both half buffers (not only second)
1296  return 2 if found in first block
1297  bit15= return-1 on read error
1298  @return 1 seems to be a valid ISO image , 2 found in first half buffer,
1299  0 format not recognized, <0 error
1300 */
1301 int isoburn_read_iso_head(struct burn_drive *d, int lba,
1302  int *image_blocks, char *info, int flag)
1303 {
1304  unsigned char *buffer= NULL;
1305  int ret, info_mode, capacity, role;
1306  off_t data_count, to_read;
1307  struct isoburn *o;
1308 
1309  buffer= calloc(1, 64 * 1024);
1310  if(buffer == NULL)
1311  {ret= -1; goto ex;}
1312 
1313  info_mode= flag&255;
1314  *image_blocks= 0;
1315  if(flag&(1<<13)) {
1316  memcpy(buffer, info, 64*1024);
1317  } else {
1318  memset(buffer, 0, 64 * 1024);
1319  role = burn_drive_get_drive_role(d);
1320  if (role == 3 || role == 5)
1321 
1322  /* >>> ??? return always 0 ? */
1323  {ret= (-1*!!(flag&(1<<15))); goto ex;}
1324 
1325  ret = burn_get_read_capacity(d, &capacity, 0);
1326  if (ret <= 0 && (role == 2 || role == 4)) {
1327  /* Might be a block device on a system where libburn cannot determine its
1328  size. Try to read anyway. */
1329  capacity = 0x7ffffff0;
1330  ret = 1;
1331  }
1332  to_read= (off_t) capacity * ((off_t) 2048);
1333  if(ret > 0 && to_read >= (off_t) (36 * 1024)) {
1334  ret= isoburn_find_emulator(&o, d, 0);
1335  if(ret > 0)
1336  if(o->media_read_error)
1337  {ret= (-1 * !!(flag & (1 << 15))); goto ex;}
1338  if(to_read >= (off_t) (64 * 1024))
1339  to_read= 64 * 1024;
1340  ret = burn_read_data(d, ((off_t) lba) * (off_t) 2048, (char *) buffer,
1341  to_read, &data_count, 32); /* error messages as DEBUG */
1342  } else
1343  ret= 0;
1344  if(ret<=0)
1345  {ret= (-1*!!(flag&(1<<15))); goto ex;}
1346  if(info_mode==2)
1347  memcpy(info, buffer, 64*1024);
1348  }
1349 
1350  if(flag&(1<<14)) {
1351  ret= isoburn_read_iso_head_parse(buffer, image_blocks, info, info_mode);
1352  if(ret<0)
1353  goto ex;
1354  if(ret>0)
1355  {ret= 2; goto ex;}
1356  }
1357  ret= isoburn_read_iso_head_parse(buffer+32*1024, image_blocks, info,
1358  info_mode);
1359  if(ret<=0)
1360  goto ex;
1361  ret= 1;
1362 ex:;
1363  if(buffer != NULL)
1364  free(buffer);
1365  return(ret);
1366 }
1367 
1368 
1369 int isoburn_make_toc_entry(struct isoburn *o, int *session_count, int lba,
1370  int track_blocks, char *volid, int flag)
1371 {
1372  int ret;
1373  struct isoburn_toc_entry *item;
1374 
1375  ret= isoburn_toc_entry_new(&item, o->toc, 0);
1376  if(ret<=0) {
1377 no_memory:;
1378  isoburn_msgs_submit(o, 0x00060000,
1379  "Not enough memory for emulated TOC entry object",
1380  0, "FATAL", 0);
1381  return(-1);
1382  }
1383  if(o->toc==NULL)
1384  o->toc= item;
1385  (*session_count)++;
1386  item->session= *session_count;
1387  item->track_no= *session_count;
1388  item->start_lba= lba;
1389  item->track_blocks= track_blocks;
1390  if(volid != NULL) {
1391  item->volid= strdup(volid);
1392  if(item->volid == NULL)
1393  goto no_memory;
1394  }
1395  return(1);
1396 }
1397 
1398 
1399 /* @param flag bit0= allow unemulated media
1400  bit1= free scanning without enclosing LBA-0-header
1401  bit4= represent emulated media as one single session
1402  (not with bit1)
1403  @return -1 severe error, 0= no neat header chain, 1= credible chain read
1404 */
1405 int isoburn_emulate_toc(struct burn_drive *d, int flag)
1406 {
1407  int ret, image_size= 0, lba, track_blocks, session_count= 0, read_flag= 0;
1408  int scan_start= 0, scan_count= 0, probe_minus_16= 0, growisofs_nwa, role;
1409  int with_enclosure= 0, readable_blocks= -1;
1410  struct isoburn *o;
1411  char *msg= NULL, *size_text= NULL, *sev, volid[33], *volid_pt= NULL;
1412  time_t start_time, last_pacifier, now;
1413 
1414  msg= calloc(1, 160);
1415  size_text= calloc(1, 80);
1416  if(msg == NULL || size_text == NULL)
1417  {ret= -1; goto ex;}
1418 
1419  /* is the medium emulated multi-session ? */
1420  ret= isoburn_find_emulator(&o, d, 0);
1421  if(ret<0)
1422  {ret= -1; goto ex;}
1423  if(o==NULL)
1424  {ret= -1; goto ex;}
1425  if(o->emulation_mode<=0 && !(flag&1))
1426  {ret= 0; goto ex;}
1427 
1428  ret= burn_get_read_capacity(d, &readable_blocks, 0);
1429  if(ret <= 0) {
1430  role = burn_drive_get_drive_role(d);
1431  if (role == 2 || role == 4)
1432  /* Might be a block device on a system where libburn cannot determine its
1433  size. Try to read anyway. */
1434  readable_blocks= 0x7ffffff0; /* try to read anyway */
1435  else
1436  readable_blocks= -1;
1437  }
1438  if(o->fabricated_disc_status == BURN_DISC_BLANK)
1439  {ret= 0; goto failure;}
1440 
1441  start_time= last_pacifier= time(NULL);
1442  lba= 0;
1443  if(flag & 2) {
1444  /* If there is a PVD at LBA 32 then this is an image with emulated TOC */
1445  ret= isoburn_read_iso_head(d, 32, &image_size, NULL, 0);
1446  if(ret > 0)
1447  lba= 32;
1448  } else {
1449  ret= isoburn_read_iso_head(d, lba, &image_size, NULL, 0);
1450  if(ret<=0)
1451  {ret= 0; goto failure;}
1452  lba= o->target_iso_head_size / 2048;
1453  with_enclosure= 1;
1454  if((flag & 16) && o->emulation_mode == 1) {
1455  ret= 1;
1456  goto failure; /* This will represent the medium as single session */
1457  }
1458  }
1459  while(lba<image_size || (flag&2)) {
1460  now= time(NULL);
1461  if(now - last_pacifier >= 5) {
1462  last_pacifier= now;
1463  if(scan_count>=10*512)
1464  sprintf(size_text, "%.f MB", ((double) scan_count) / 512.0);
1465  else
1466  sprintf(size_text, "%.f kB", 2 * (double) scan_count);
1467  sprintf(msg, "Found %d ISO sessions by scanning %s in %.f seconds",
1468  session_count, size_text, (double) (now - start_time));
1469  isoburn_msgs_submit(o, 0x00060000, msg, 0, "UPDATE", 0);
1470  }
1471  read_flag= 1;
1472  if(flag&2)
1473  read_flag|= (1<<15)|((session_count>0)<<14);
1474  else {
1475 
1476  /* growisofs aligns to 16 rather than 32. Overwritable TOC emulation
1477  relies on not accidentally seeing inter-session trash data.
1478  But one can safely access 16 blocks earlier because a xorriso header
1479  would have been overwritten with the unused 16 blocks at its start.
1480  If libisoburn alignment would increase, then this would not be
1481  possible any more.
1482  */
1483 
1484  if(probe_minus_16)
1485  read_flag|= (1<<14);
1486  probe_minus_16= 0;
1487  }
1488 
1489  ret= isoburn_read_iso_head(d, lba, &track_blocks, volid, read_flag);
1490  if(ret > 0) {
1491  volid_pt= volid;
1492  } else {
1493  volid_pt= NULL;
1494  if(session_count>0) {
1495  if(flag&2) {
1496  if(ret==0) {
1497  /* try at next 64 k block (check both 32 k halves) */
1498  lba+= 32;
1499  scan_count+= 32;
1500  if(lba-scan_start <= Libisoburn_toc_scan_max_gaP)
1501  continue;
1502  }
1503  break;
1504  }
1505  sprintf(msg,
1506  "Chain of ISO session headers broken at #%d, LBA %ds",
1507  session_count+1, lba);
1508  isoburn_msgs_submit(o, 0x00060000, msg, 0, "WARNING", 0);
1509 
1510  if(with_enclosure) {
1511  ret= isoburn_make_toc_entry(o, &session_count, 0, image_size, NULL,0);
1512  if(ret<=0)
1513  goto failure;
1514  }
1515  break; /* do not return failure */
1516 
1517  }
1518  {ret= 0; goto failure;}
1519  }
1520  if(ret==2) /* ISO header was found in first half block */
1521  lba-= 16;
1522 
1523  if(readable_blocks >= 0 && lba + track_blocks > readable_blocks) {
1524  sprintf(msg, "ISO image size %ds larger than readable size %ds",
1525  lba + track_blocks, readable_blocks);
1526  isoburn_msgs_submit(o, 0x00060000, msg, 0, "WARNING", 0);
1527  track_blocks= readable_blocks - lba;
1528  }
1529  ret= isoburn_make_toc_entry(o, &session_count, lba, track_blocks, volid_pt,
1530  0);
1531  if(ret<=0)
1532  goto failure;
1533  lba+= track_blocks;
1534  scan_count+= 32;
1535 
1536  /* growisofs aligns to 16 rather than 32 */
1537  growisofs_nwa= lba;
1538  if(growisofs_nwa % 16)
1539  growisofs_nwa+= 16 - (growisofs_nwa % 16);
1540  if(lba % Libisoburn_nwa_alignemenT)
1542  scan_start= lba;
1543  if(lba - growisofs_nwa == 16)
1544  probe_minus_16= 1;
1545  }
1546  if(last_pacifier != start_time)
1547  sev= "UPDATE";
1548  else
1549  sev= "DEBUG";
1550  now= time(NULL);
1551  if(scan_count>=10*512)
1552  sprintf(size_text, "%.f MB", ((double) scan_count) / 512.0);
1553  else
1554  sprintf(size_text, "%.f kB", 2 * (double) scan_count);
1555  sprintf(msg, "Found %d ISO sessions by scanning %s in %.f seconds",
1556  session_count, size_text, (double) (now - start_time));
1557  isoburn_msgs_submit(o, 0x00060000, msg, 0, sev, 0);
1558  {ret= 1; goto ex;}
1559 failure:;
1560  isoburn_toc_entry_destroy(&(o->toc), 1);
1561  if(with_enclosure && o->emulation_mode == 1) {
1562  if(readable_blocks >= 0 && image_size > readable_blocks) {
1563  sprintf(msg, "ISO image size %ds larger than readable size %ds",
1564  image_size, readable_blocks);
1565  isoburn_msgs_submit(o, 0x00060000, msg, 0, "WARNING", 0);
1566  image_size= readable_blocks;
1567  }
1568  session_count= 0;
1569  ret= isoburn_make_toc_entry(o, &session_count, 0, image_size, NULL, 0);
1570  }
1571 ex:;
1572  if(msg != NULL)
1573  free(msg);
1574  if(size_text != NULL)
1575  free(size_text);
1576  return(ret);
1577 }
1578 
1579 
1581  int session_count, int track_count, int flag)
1582 {
1583  int i;
1584  int isoburn_toc_destroy_arrays(struct isoburn_toc_disc *o, int flag);
1585 
1586  o->sessions= calloc(session_count, sizeof(struct isoburn_toc_session));
1587  o->session_pointers=
1588  calloc(session_count, sizeof(struct isoburn_toc_session *));
1589  o->tracks= calloc(track_count, sizeof(struct isoburn_toc_track));
1590  o->track_pointers= calloc(track_count, sizeof(struct isoburn_toc_track *));
1591  if(o->sessions!=NULL && o->session_pointers!=NULL &&
1592  o->tracks!=NULL && o->track_pointers!=NULL) {
1593  for(i= 0; i<session_count; i++) {
1594  o->sessions[i].session= NULL;
1595  o->sessions[i].track_pointers= NULL;
1596  o->sessions[i].track_count= 0;
1597  o->sessions[i].toc_entry= NULL;
1598  o->session_pointers[i]= NULL;
1599  }
1600  for(i= 0; i<track_count; i++) {
1601  o->tracks[i].track= NULL;
1602  o->tracks[i].toc_entry= NULL;
1603  o->track_pointers[i]= NULL;
1604  }
1605  return(1);
1606  }
1607  /* failed */
1609  return(-1);
1610 }
1611 
1612 
1614 {
1615  if(o->sessions!=NULL)
1616  free((char *) o->sessions);
1617  o->sessions= NULL;
1618  if(o->session_pointers!=NULL)
1619  free((char *) o->session_pointers);
1620  o->session_pointers= NULL;
1621  if(o->tracks!=NULL)
1622  free((char *) o->tracks);
1623  o->tracks= NULL;
1624  if(o->track_pointers!=NULL)
1625  free((char *) o->track_pointers);
1626  o->track_pointers= NULL;
1627  return(1);
1628 }
1629 
1630 
1631 struct isoburn_toc_disc *isoburn_toc_drive_get_disc(struct burn_drive *d)
1632 {
1633  int ret, session_count= 0, track_count= 0, num_tracks= 0, i, j;
1634  int open_sessions= 0;
1635  struct isoburn *o;
1636  struct isoburn_toc_entry *t;
1637  struct isoburn_toc_disc *toc_disc= NULL;
1638  struct burn_session **s;
1639  struct burn_track **tracks;
1640 
1641  toc_disc= calloc(1, sizeof(struct isoburn_toc_disc));
1642  if(toc_disc==NULL)
1643  return(NULL);
1644  toc_disc->disc= NULL;
1645  toc_disc->sessions= NULL;
1646  toc_disc->session_pointers= NULL;
1647  toc_disc->tracks= NULL;
1648  toc_disc->track_pointers= NULL;
1649  toc_disc->session_count= 0;
1650  toc_disc->incomplete_session_count= 0;
1651  toc_disc->track_count= 0;
1652  toc_disc->toc= NULL;
1653 
1654  /* is the medium emulated multi-session ? */
1655  ret= isoburn_find_emulator(&o, d, 0);
1656  if(ret<0)
1657  goto libburn;
1658  if(o->toc==NULL)
1659  goto libburn;
1660 
1661  /* This is an emulated TOC */
1662  toc_disc->toc= o->toc;
1663  for(t= toc_disc->toc; t!=NULL; t= t->next)
1664  session_count++;
1665  ret= isoburn_toc_new_arrays(toc_disc, session_count, session_count, 0);
1666  if(ret<=0)
1667  goto failure;
1668  t= toc_disc->toc;
1669  for(i= 0; i<session_count; i++) {
1670  toc_disc->sessions[i].track_pointers= toc_disc->track_pointers+i;
1671  toc_disc->sessions[i].track_count= 1;
1672  toc_disc->sessions[i].toc_entry= t;
1673  toc_disc->session_pointers[i]= toc_disc->sessions+i;
1674  toc_disc->tracks[i].toc_entry= t;
1675  toc_disc->track_pointers[i]= toc_disc->tracks+i;
1676  t= t->next;
1677  }
1678  toc_disc->session_count= session_count;
1679  toc_disc->track_count= session_count;
1680  return(toc_disc);
1681 
1682 libburn:;
1683  /* This is a libburn provided TOC */
1684  toc_disc->disc= burn_drive_get_disc(d);
1685  if(toc_disc->disc == NULL) {
1686 failure:;
1687  free((char *) toc_disc);
1688  return(NULL);
1689  }
1690  s= burn_disc_get_sessions(toc_disc->disc, &session_count);
1691  open_sessions= burn_disc_get_incomplete_sessions(toc_disc->disc);
1692  for(i= 0; i < session_count + open_sessions; i++) {
1693  tracks = burn_session_get_tracks(s[i], &num_tracks);
1694  if(i == session_count + open_sessions - 1 && open_sessions > 0) {
1695  /* Do not count the invisible track of the last incomplete session */
1696  num_tracks--;
1697  }
1698  track_count+= num_tracks;
1699  }
1700  if(session_count + open_sessions <= 0 || track_count <= 0)
1701  goto failure;
1702  ret= isoburn_toc_new_arrays(toc_disc, session_count + open_sessions,
1703  track_count, 0);
1704  if(ret<=0)
1705  goto failure;
1706  track_count= 0;
1707  for(i= 0; i < session_count + open_sessions; i++) {
1708  tracks = burn_session_get_tracks(s[i], &num_tracks);
1709  if(i == session_count + open_sessions - 1 && open_sessions > 0)
1710  num_tracks--;
1711  toc_disc->sessions[i].session= s[i];
1712  toc_disc->sessions[i].track_pointers= toc_disc->track_pointers+track_count;
1713  toc_disc->sessions[i].track_count= num_tracks;
1714  toc_disc->session_pointers[i]= toc_disc->sessions+i;
1715  for(j= 0; j<num_tracks; j++) {
1716  toc_disc->tracks[track_count+j].track= tracks[j];
1717  toc_disc->track_pointers[track_count+j]= toc_disc->tracks+(track_count+j);
1718  }
1719  track_count+= num_tracks;
1720  }
1721  toc_disc->session_count= session_count;
1722  toc_disc->incomplete_session_count= open_sessions;
1723  toc_disc->track_count= track_count;
1724  return(toc_disc);
1725 }
1726 
1727 
1729 {
1730  struct isoburn_toc_entry *t;
1731  int ret= 0, num_sessions, num_tracks, open_sessions= 0, session_idx= -1;
1732  struct burn_session **sessions;
1733  struct burn_track **tracks;
1734  struct burn_toc_entry entry;
1735 
1736  if(disc==NULL)
1737  return(0);
1738  if(disc->toc!=NULL) {
1739  for(t= disc->toc; t!=NULL; t= t->next)
1740  ret= t->start_lba + t->track_blocks;
1741  } else if(disc->disc!=NULL) {
1742  sessions= burn_disc_get_sessions(disc->disc, &num_sessions);
1743  open_sessions= burn_disc_get_incomplete_sessions(disc->disc);
1744  if(num_sessions + open_sessions > 0) {
1745  session_idx= num_sessions + open_sessions - 1;
1746  tracks = burn_session_get_tracks(sessions[session_idx], &num_tracks);
1747  if(open_sessions > 0) {
1748  /* Do not count the invisible track of the last incomplete session */
1749  num_tracks--;
1750  }
1751  if(num_tracks <= 0)
1752  session_idx--;
1753  }
1754  if(session_idx >= 0) {
1755  tracks = burn_session_get_tracks(sessions[session_idx], &num_tracks);
1756  if(session_idx == num_sessions + open_sessions - 1 && open_sessions > 0) {
1757  /* Do not count the invisible track of the last incomplete session */
1758  num_tracks--;
1759  }
1760  if(num_tracks > 0) {
1761  burn_track_get_entry(tracks[num_tracks - 1], &entry);
1762  if(entry.extensions_valid & 1)
1763  ret= entry.start_lba + entry.track_blocks;
1764  }
1765  }
1766 /*
1767  ret= burn_disc_get_sectors(disc->disc);
1768 */
1769  }
1770  return(ret);
1771 }
1772 
1773 
1775  struct isoburn_toc_disc *disc, int *num)
1776 {
1777  *num= disc->session_count;
1778  return(disc->session_pointers);
1779 }
1780 
1781 
1783 {
1784  return(disc->incomplete_session_count);
1785 }
1786 
1787 
1789 {
1790  struct isoburn_toc_entry *t;
1791  int count= 0, i;
1792 
1793  if(s==NULL)
1794  return(0);
1795  if(s->toc_entry!=NULL) {
1796  t= s->toc_entry;
1797  for(i= 0; i<s->track_count; i++) {
1798  count+= t->track_blocks;
1799  t= t->next;
1800  }
1801  } else if(s->session!=NULL)
1802  count= burn_session_get_sectors(s->session);
1803  return(count);
1804 }
1805 
1806 
1807 int isoburn_toc_entry_finish(struct burn_toc_entry *entry,
1808  int session_no, int track_no, int flag)
1809 {
1810  int pmin, psec, pframe;
1811 
1812  entry->extensions_valid= 1;
1813  entry->adr= 1;
1814  entry->control= 4;
1815  entry->session= session_no & 255;
1816  entry->session_msb= (session_no >> 8) & 255;
1817  entry->point= track_no & 255;
1818  entry->point_msb= (track_no >> 8) & 255;
1819 
1820  burn_lba_to_msf(entry->start_lba, &pmin, &psec, &pframe);
1821  if(pmin<=255)
1822  entry->pmin= pmin;
1823  else
1824  entry->pmin= 255;
1825  entry->psec= psec;
1826  entry->pframe= pframe;
1827  return(1);
1828 }
1829 
1830 
1832  struct burn_toc_entry *entry)
1833 {
1834  struct isoburn_toc_track *t;
1835 
1836  if(s==NULL)
1837  return;
1838  if(s->session!=NULL && s->toc_entry==NULL) {
1839  burn_session_get_leadout_entry(s->session, entry);
1840  return;
1841  }
1842  if(s->track_count<=0 || s->track_pointers==NULL || s->toc_entry==NULL)
1843  return;
1844  t= s->track_pointers[s->track_count-1];
1845  entry->start_lba= t->toc_entry->start_lba + t->toc_entry->track_blocks;
1846  entry->track_blocks= 0;
1848  0);
1849 }
1850 
1851 
1853  struct isoburn_toc_session *s, int *num)
1854 {
1855  *num= s->track_count;
1856  return(s->track_pointers);
1857 }
1858 
1859 
1861  struct burn_toc_entry *entry)
1862 {
1863  if(t==0)
1864  return;
1865  if(t->track!=NULL && t->toc_entry==NULL) {
1866  burn_track_get_entry(t->track, entry);
1867  return;
1868  }
1869  if(t->toc_entry==NULL)
1870  return;
1871  entry->start_lba= t->toc_entry->start_lba;
1872  entry->track_blocks= t->toc_entry->track_blocks;
1874  0);
1875 }
1876 
1877 
1878 int isoburn_toc_track_get_emul(struct isoburn_toc_track *t, int *start_lba,
1879  int *image_blocks, char volid[33], int flag)
1880 {
1881  if(t->toc_entry == NULL)
1882  return(0);
1883  if(t->toc_entry->volid == NULL)
1884  return(0);
1885  *start_lba= t->toc_entry->start_lba;
1886  *image_blocks= t->toc_entry->track_blocks;
1887  strncpy(volid, t->toc_entry->volid, 32);
1888  volid[32]= 0;
1889  return(1);
1890 }
1891 
1892 
1894 {
1895  if(d->disc!=NULL)
1896  burn_disc_free(d->disc);
1898  free((char *) d);
1899 }
1900 
1901 
1902 int isoburn_get_track_lba(struct isoburn_toc_track *track, int *lba, int flag)
1903 {
1904  struct burn_toc_entry entry;
1905 
1906  isoburn_toc_track_get_entry(track, &entry);
1907  if (entry.extensions_valid & 1)
1908  *lba= entry.start_lba;
1909  else
1910  *lba= burn_msf_to_lba(entry.pmin, entry.psec, entry.pframe);
1911  return(1);
1912 }
1913 
1914 
1915 int isoburn_drive_set_msgs_submit(struct burn_drive *d,
1916  int (*msgs_submit)(void *handle, int error_code,
1917  char msg_text[], int os_errno,
1918  char severity[], int flag),
1919  void *submit_handle, int submit_flag, int flag)
1920 {
1921  struct isoburn *o;
1922  int ret;
1923 
1924  ret= isoburn_find_emulator(&o, d, 0);
1925  if(ret<0 || o==NULL)
1926  return(-1);
1928  o->msgs_submit_handle= submit_handle;
1929  o->msgs_submit_flag= submit_flag;
1930  return(1);
1931 }
1932 
1933 
1934 /* @param flag bit0= with adr_mode 3: adr_value might be 16 blocks too high
1935  bit1= insist in seeing a disc object with at least one session
1936  bit2= with adr_mode 4: use adr_value as regular expression
1937 */
1938 int isoburn_set_msc1(struct burn_drive *d, int adr_mode, char *adr_value,
1939  int flag)
1940 {
1941  int ret, num_sessions= 0, num_tracks, adr_num, i, j, total_tracks;
1942  int lba, best_lba, size, re_valid= 0, track_count= 0;
1943  time_t start_time= 0, last_pacifier= 0, now;
1944  char volid[33], *msg= NULL;
1945  struct isoburn *o;
1946  struct isoburn_toc_disc *disc= NULL;
1947  struct isoburn_toc_session **sessions= NULL;
1948  struct isoburn_toc_track **tracks= NULL;
1949  static char mode_names[][20]= {"auto", "session", "track", "lba", "volid"};
1950  static int max_mode_names= 4;
1951  regex_t re;
1952  regmatch_t match[1];
1953  enum burn_disc_status s;
1954 
1955  ret= isoburn_find_emulator(&o, d, 0);
1956  if(ret<0)
1957  return(-1);
1958  if(o==NULL)
1959  return(-1);
1960 
1961  msg= calloc(1, 160);
1962  if(msg == NULL)
1963  {ret= -1; goto ex;}
1964 
1965  start_time= last_pacifier= time(NULL);
1966  adr_num= atoi(adr_value);
1967  if(adr_mode!=3 || (flag & 2)) {
1968  disc= isoburn_toc_drive_get_disc(d);
1969  if(disc==NULL) {
1970 not_found:;
1971  if(adr_mode<0 || adr_mode>max_mode_names)
1972  goto unknown_mode;
1973  sprintf(msg, "Failed to find %s %s", mode_names[adr_mode],
1974  strlen(adr_value)<=80 ? adr_value : "-oversized-string-");
1975  isoburn_msgs_submit(o, 0x00060000, msg, 0, "FAILURE", 0);
1976  ret= 0; goto ex;
1977  }
1978  sessions= isoburn_toc_disc_get_sessions(disc, &num_sessions);
1979  if(sessions==NULL || num_sessions<=0)
1980  goto not_found;
1981  }
1982  if(adr_mode==0) {
1983  /* Set fabricated_msc1 to last session in TOC */
1984  tracks= isoburn_toc_session_get_tracks(sessions[num_sessions-1],
1985  &num_tracks);
1986  if(tracks==NULL || num_tracks<=0)
1987  goto not_found;
1988  isoburn_get_track_lba(tracks[0], &(o->fabricated_msc1), 0);
1989 
1990  } else if(adr_mode==1) {
1991  /* Use adr_num as session index (first session is 1, not 0) */
1992  if(adr_num<1 || adr_num>num_sessions)
1993  goto not_found;
1994  tracks= isoburn_toc_session_get_tracks(sessions[adr_num-1], &num_tracks);
1995  if(tracks==NULL || num_tracks<=0)
1996  goto not_found;
1997  isoburn_get_track_lba(tracks[0], &(o->fabricated_msc1), 0);
1998 
1999  } else if(adr_mode==2) {
2000  /* use adr_num as track index */
2001  total_tracks= 0;
2002  for(i=0; i<num_sessions; i++) {
2003  tracks= isoburn_toc_session_get_tracks(sessions[i], &num_tracks);
2004  if(tracks==NULL)
2005  continue;
2006  for(j= 0; j<num_tracks; j++) {
2007  total_tracks++;
2008  if(total_tracks==adr_num) {
2009  isoburn_get_track_lba(tracks[j], &(o->fabricated_msc1), 0);
2010  ret= 1; goto ex;
2011  }
2012  }
2013  }
2014  goto not_found;
2015 
2016  } else if(adr_mode==3) {
2017  o->fabricated_msc1= adr_num;
2019  if(o->fabricated_msc1 > 0 && s != BURN_DISC_FULL
2020  && s != BURN_DISC_APPENDABLE) {
2021  isoburn_msgs_submit(o, 0x00060000,
2022  "Non-zero load offset given with blank input media",
2023  0, "FAILURE", 0);
2024  ret= 0; goto ex;
2025  }
2026  if((flag & 1) && o->fabricated_msc1 >= 16) {
2027  /* adr_num is possibly 16 blocks too high */
2028  ret= isoburn_read_iso_head(d, o->fabricated_msc1, &size,volid, 1|(1<<14));
2029  if(ret==2)
2030  o->fabricated_msc1-= 16;
2031  }
2032  } else if(adr_mode==4) {
2033  /* search for volume id that is equal to adr_value */
2034  if(flag & 4) {
2035  ret= regcomp(&re, adr_value, 0);
2036  if(ret != 0)
2037  flag&= ~4;
2038  else
2039  re_valid= 1;
2040  }
2041  best_lba= -1;
2042  for(i=0; i<num_sessions; i++) {
2043  tracks= isoburn_toc_session_get_tracks(sessions[i], &num_tracks);
2044  if(tracks==NULL)
2045  continue;
2046  for(j= 0; j<num_tracks; j++) {
2047  now= time(NULL);
2048  if(now - last_pacifier >= 5 && track_count > 0) {
2049  last_pacifier= now;
2050  sprintf(msg,
2051  "Scanned %d tracks for matching volid in %.f seconds",
2052  track_count, (double) (now - start_time));
2053  isoburn_msgs_submit(o, 0x00060000, msg, 0, "UPDATE", 0);
2054  }
2055  track_count++;
2056  ret= isoburn_toc_track_get_emul(tracks[0], &lba, &size, volid, 0);
2057  if(ret < 0)
2058  continue;
2059  if(ret == 0) {
2060  isoburn_get_track_lba(tracks[0], &lba, 0);
2061  ret= isoburn_read_iso_head(d, lba, &size, volid, 1);
2062  if(ret<=0)
2063  continue;
2064  }
2065  if(flag & 4) {
2066  ret= regexec(&re, volid, 1, match, 0);
2067  if(ret != 0)
2068  continue;
2069  } else {
2070  if(strcmp(volid, adr_value)!=0)
2071  continue;
2072  }
2073  best_lba= lba;
2074  }
2075  }
2076  if(best_lba<0)
2077  goto not_found;
2078  o->fabricated_msc1= best_lba;
2079 
2080  } else {
2081 unknown_mode:;
2082  sprintf(msg, "Program error: Unknown msc1 address mode %d", adr_mode);
2083  isoburn_msgs_submit(o, 0x00060000, msg, 0, "FATAL", 0);
2084  ret= 0; goto ex;
2085  }
2086  ret= 1;
2087 ex:;
2088  if(start_time != last_pacifier && track_count > 0) {
2089  now= time(NULL);
2090  sprintf(msg,
2091  "Scanned %d tracks for matching volid in %.f seconds",
2092  track_count, (double) (now - start_time));
2093  isoburn_msgs_submit(o, 0x00060000, msg, 0, "UPDATE", 0);
2094  }
2095  if(disc!=NULL)
2096  isoburn_toc_disc_free(disc);
2097  if((flag & 4) && re_valid)
2098  regfree(&re);
2099  if(msg != NULL)
2100  free(msg);
2101  return(ret);
2102 }
2103 
2104 
2105 int isoburn_get_mount_params(struct burn_drive *d,
2106  int adr_mode, char *adr_value,
2107  int *lba, int *track, int *session,
2108  char volid[33], int flag)
2109 {
2110  int msc1_mem, ret, total_tracks, num_sessions, num_tracks, i, j, track_lba;
2111  int size, is_iso= 0;
2112  struct isoburn *o;
2113  struct isoburn_toc_disc *disc= NULL;
2114  struct isoburn_toc_session **sessions= NULL;
2115  struct isoburn_toc_track **tracks= NULL;
2116 
2117  *lba= *track= *session= -1;
2118  volid[0]= 0;
2119  ret= isoburn_find_emulator(&o, d, 0);
2120  if(ret < 0 || o == NULL)
2121  return(-1);
2122  msc1_mem= o->fabricated_msc1;
2123  ret= isoburn_set_msc1(d, adr_mode, adr_value, 2 | (flag & 4));
2124  if(ret <= 0)
2125  return(ret);
2126  *lba= o->fabricated_msc1;
2127 
2128  disc= isoburn_toc_drive_get_disc(d);
2129  if(disc==NULL)
2130  {ret= -1; goto ex;} /* cannot happen because checked by isoburn_set_msc1 */
2131  sessions= isoburn_toc_disc_get_sessions(disc, &num_sessions);
2132  if(sessions==NULL || num_sessions<=0)
2133  {ret= -1; goto ex;} /* cannot happen because checked by isoburn_set_msc1 */
2134  total_tracks= 0;
2135  for(i=0; i<num_sessions && *session < 0; i++) {
2136  tracks= isoburn_toc_session_get_tracks(sessions[i], &num_tracks);
2137  if(tracks==NULL)
2138  continue;
2139  for(j= 0; j<num_tracks && *track < 0; j++) {
2140  total_tracks++;
2141  isoburn_get_track_lba(tracks[j], &track_lba, 0);
2142  if(track_lba == *lba) {
2143  *track= total_tracks;
2144  *session= i + 1;
2145  }
2146  }
2147  }
2148  ret= isoburn_read_iso_head(d, *lba, &size, volid, 1);
2149  if(ret <= 0)
2150  volid[0]= 0;
2151  else
2152  is_iso= 1;
2153 
2154 ex:;
2155  o->fabricated_msc1= msc1_mem;
2156  if(disc != NULL)
2157  isoburn_toc_disc_free(disc);
2158  return(2 - is_iso);
2159 }
2160 
2161 
int isoburn_disc_erasable(struct burn_drive *d)
Tells whether the medium can be treated by isoburn_disc_erase().
Definition: burn_wrap.c:682
int isoburn__sev_to_text(int severity, char **severity_name, int flag)
Definition: burn_wrap.c:1196
struct isoburn_toc_session ** isoburn_toc_disc_get_sessions(struct isoburn_toc_disc *disc, int *num)
Get the array of session handles and the number of complete sessions from the table of content.
Definition: burn_wrap.c:1774
int isoburn_set_truncate(struct burn_drive *drive, int flag)
Override the truncation setting that was made with flag bit2 during the call of isoburn_drive_aquire.
Definition: burn_wrap.c:885
int isoburn_drive_aquire(struct burn_drive_info *drive_infos[], char *adr, int flag)
Acquire a target drive by its filesystem path or libburn persistent address.
Definition: burn_wrap.c:545
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.
Definition: burn_wrap.c:2105
enum burn_disc_status isoburn_disc_get_status(struct burn_drive *drive)
Inquire the medium status.
Definition: burn_wrap.c:646
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.
Definition: burn_wrap.c:1852
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.
Definition: burn_wrap.c:1860
int isoburn_drive_wrote_well(struct burn_drive *d)
Inquire whether the most recent write run was successful.
Definition: burn_wrap.c:1132
int(* libisoburn_default_msgs_submit)(void *handle, int error_code, char msg_text[], int os_errno, char severity[], int flag)
Definition: isoburn.c:51
int isoburn_needs_emulation(struct burn_drive *drive)
Inquire whether the medium needs emulation or would be suitable for generic multi-session via libburn...
Definition: burn_wrap.c:1062
int isoburn_get_track_lba(struct isoburn_toc_track *track, int *lba, int flag)
Definition: burn_wrap.c:1902
int isoburn_read_iso_head_parse(unsigned char *data, int *image_blocks, char *info, int flag)
Definition: burn_wrap.c:1253
static int isoburn_is_overwritable(struct burn_drive *drive, int flag)
Definition: burn_wrap.c:695
int isoburn__text_to_sev(char *severity_name, int *severity_number, int flag)
Definition: burn_wrap.c:1209
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.
Definition: burn_wrap.c:1831
int isoburn_drive_grab(struct burn_drive *drive, int load)
Acquire a drive from the burn_drive_info[] array which was obtained by a previous call of burn_drive_...
Definition: burn_wrap.c:604
int isoburn_is_intermediate_dvd_rw(struct burn_drive *d, int flag)
Definition: burn_wrap.c:315
static int isoburn_welcome_media(struct isoburn **o, struct burn_drive *d, int flag)
Examines the medium and sets appropriate emulation if needed.
Definition: burn_wrap.c:349
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 si...
Definition: burn_wrap.c:1301
int isoburn_report_iso_error(int iso_error_code, char msg_text[], int os_errno, char min_severity[], int flag)
Definition: burn_wrap.c:1221
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 medium.
Definition: burn_wrap.c:771
void isoburn_disc_erase(struct burn_drive *drive, int fast)
Mark the medium as blank.
Definition: burn_wrap.c:710
static int isoburn_emulate_toc(struct burn_drive *d, int flag)
Definition: burn_wrap.c:1405
int isoburn_toc_new_arrays(struct isoburn_toc_disc *o, int session_count, int track_count, int flag)
Definition: burn_wrap.c:1580
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 overwritable media.
Definition: burn_wrap.c:1114
int isoburn_toc_track_get_emul(struct isoburn_toc_track *t, int *start_lba, int *image_blocks, char volid[33], int flag)
Obtain eventual ISO image parameters of an emulated track.
Definition: burn_wrap.c:1878
int isoburn_set_start_byte(struct isoburn *o, off_t value, int flag)
Set the start address for an emulated add-on session.
Definition: burn_wrap.c:1081
int isoburn_toc_disc_get_sectors(struct isoburn_toc_disc *disc)
Tell the number of 2048 byte blocks covered by the table of content.
Definition: burn_wrap.c:1728
int isoburn_make_toc_entry(struct isoburn *o, int *session_count, int lba, int track_blocks, char *volid, int flag)
Definition: burn_wrap.c:1369
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.
Definition: burn_wrap.c:1915
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.
Definition: burn_wrap.c:1148
void isoburn_finish(void)
Shutdown all three libraries.
Definition: burn_wrap.c:1054
int libisoburn_default_msgs_submit_flag
Definition: isoburn.c:54
int isoburn_disc_get_msc1(struct burn_drive *d, int *start_lba)
Obtain the start block number of the most recent session on the medium.
Definition: burn_wrap.c:799
int isoburn_toc_destroy_arrays(struct isoburn_toc_disc *o, int flag)
Definition: burn_wrap.c:1613
int isoburn_drive_scan_and_grab(struct burn_drive_info *drive_infos[], char *adr, int load)
Acquire a target drive by its filesystem path or libburn persistent address.
Definition: burn_wrap.c:594
int isoburn_toc_entry_finish(struct burn_toc_entry *entry, int session_no, int track_no, int flag)
Definition: burn_wrap.c:1807
int isoburn_libisofs_req(int *major, int *minor, int *micro)
The minimum compile time requirements of libisoburn towards libjte are the same as of a suitable libi...
Definition: burn_wrap.c:270
void * libisoburn_default_msgs_submit_handle
Definition: isoburn.c:53
int isoburn_initialize(char msg[1024], int flag)
Overview.
Definition: burn_wrap.c:74
int isoburn_toc_session_get_sectors(struct isoburn_toc_session *s)
Tell the number of 2048 byte blocks covered by a particular session.
Definition: burn_wrap.c:1788
void isoburn_toc_disc_free(struct isoburn_toc_disc *d)
Release the memory associated with a master handle of a medium.
Definition: burn_wrap.c:1893
int isoburn_libjte_req(int *major, int *minor, int *micro)
The minimum version of libjte to be used with this version of libisoburn at runtime.
Definition: burn_wrap.c:290
void isoburn_disc_write(struct burn_write_opts *opts, struct burn_disc *disc)
Start writing of the new session.
Definition: burn_wrap.c:905
int isoburn_disc_pretend_full_uncond(struct burn_drive *drive)
Sets the medium status to BURN_DISC_FULL unconditionally.
Definition: burn_wrap.c:669
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 parameter...
Definition: burn_wrap.c:303
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.
Definition: burn_wrap.c:865
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.
Definition: burn_wrap.c:831
struct isoburn * isoburn_list_start
Definition: isoburn.c:112
struct isoburn_toc_disc * isoburn_toc_drive_get_disc(struct burn_drive *d)
Obtain a master handle for the table of content.
Definition: burn_wrap.c:1631
void isoburn_drive_release(struct burn_drive *drive, int eject)
Release an acquired drive.
Definition: burn_wrap.c:1039
int isoburn_find_emulator(struct isoburn **pt, struct burn_drive *drive, int flag)
Retrieve medium emulation and eventual isoburn emulator of drive.
Definition: burn_wrap.c:627
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.
Definition: burn_wrap.c:280
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.
Definition: burn_wrap.c:1938
int isoburn_toc_disc_get_incmpl_sess(struct isoburn_toc_disc *disc)
Obtain the number of incomplete sessions which are recorded in the result array of isoburn_toc_disc_g...
Definition: burn_wrap.c:1782
int isoburn_toc_entry_destroy(struct isoburn_toc_entry **o, int flag)
Definition: isoburn.c:89
int isoburn_destroy_all(struct isoburn **objpt, int flag)
Definition: isoburn.c:213
int isoburn_msgs_submit(struct isoburn *o, int error_code, char msg_text[], int os_errno, char severity[], int flag)
Definition: isoburn.c:340
int isoburn_new(struct isoburn **objpt, int flag)
Definition: isoburn.c:115
void isoburn_version(int *major, int *minor, int *micro)
Obtain the three release version numbers of the library.
Definition: isoburn.c:808
int isoburn_destroy(struct isoburn **objpt, int flag)
Definition: isoburn.c:178
int isoburn_find_by_drive(struct isoburn **pt, struct burn_drive *d, int flag)
Definition: isoburn.c:326
int isoburn_toc_entry_new(struct isoburn_toc_entry **objpt, struct isoburn_toc_entry *boss, int flag)
Definition: isoburn.c:60
int isoburn_start_emulation(struct isoburn *o, int flag)
Initialize the emulation of multi-session on random access media.
Definition: isofs_wrap.c:537
#define Libisoburn_nwa_alignemenT
Definition: isoburn.h:778
int isoburn_invalidate_iso(struct isoburn *o, int flag)
Alters and writes the first 64 kB of a "medium" to invalidate an ISO image.
Definition: isofs_wrap.c:673
#define Libisoburn_target_head_sizE
Definition: isoburn.h:51
#define Libisoburn_toc_scan_max_gaP
Definition: isoburn.h:792
#define isoburn_libisofs_req_major
The minimum version of libisofs to be used with this version of libisoburn at compile time.
Definition: libisoburn.h:250
#define isoburn_libisofs_req_minor
Definition: libisoburn.h:251
#define isoburn_libisofs_req_micro
Definition: libisoburn.h:252
struct isoburn_toc_track ** track_pointers
Definition: isoburn.h:837
struct isoburn_toc_session * sessions
Definition: isoburn.h:834
struct isoburn_toc_entry * toc
Definition: isoburn.h:841
int incomplete_session_count
Definition: isoburn.h:839
struct burn_disc * disc
Definition: isoburn.h:833
struct isoburn_toc_track * tracks
Definition: isoburn.h:836
struct isoburn_toc_session ** session_pointers
Definition: isoburn.h:835
Definition: isoburn.h:27
int start_lba
Definition: isoburn.h:30
struct isoburn_toc_entry * next
Definition: isoburn.h:34
int session
Definition: isoburn.h:28
char * volid
Definition: isoburn.h:32
int track_blocks
Definition: isoburn.h:31
int track_no
Definition: isoburn.h:29
struct isoburn_toc_entry * toc_entry
Definition: isoburn.h:828
struct burn_session * session
Definition: isoburn.h:825
struct isoburn_toc_track ** track_pointers
Definition: isoburn.h:826
struct burn_track * track
Definition: isoburn.h:819
struct isoburn_toc_entry * toc_entry
Definition: isoburn.h:820
int nwa
Definition: isoburn.h:104
int(* msgs_submit)(void *handle, int error_code, char msg_text[], int os_errno, char severity[], int flag)
Definition: isoburn.h:163
struct isoburn_toc_entry * toc
Definition: isoburn.h:123
struct burn_source * iso_source
Definition: isoburn.h:154
off_t min_start_byte
Definition: isoburn.h:101
int wrote_well
Definition: isoburn.h:129
struct burn_drive * drive
Definition: isoburn.h:70
int truncate
Definition: isoburn.h:108
int do_tao
Definition: isoburn.h:169
int msgs_submit_flag
Definition: isoburn.h:166
int emulation_mode
Definition: isoburn.h:75
int fabricated_msc1
Definition: isoburn.h:85
int fabricated_msc2
Definition: isoburn.h:92
enum burn_disc_status fabricated_disc_status
Definition: isoburn.h:114
int zero_nwa
Definition: isoburn.h:98
void * msgs_submit_handle
Definition: isoburn.h:165
int target_iso_head_size
Definition: isoburn.h:133
int media_read_error
Definition: isoburn.h:118