libburn  1.2.8
libburner.c
Go to the documentation of this file.
1 
2 /* test/libburner.c , API illustration of burning data or audio tracks to CD */
3 /* Copyright (C) 2005 - 2011 Thomas Schmitt <scdbackup@gmx.net> */
4 /* Provided under GPL, see also "License and copyright aspects" at file end */
5 
6 
7 /** Overview
8 
9  libburner is a minimal demo application for the library libburn as provided
10  on http://libburnia-project.org . It can list the available devices, can
11  blank a CD-RW or DVD-RW, can format DVD-RW and BD, can burn to CD-R,
12  CD-RW, DVD-R, DVD+R, DVD+R/DL, DVD+RW, DVD-RW, DVD-RAM, BD-R, BD-RE.
13  Not supported yet: DVD-R/DL.
14 
15  It's main purpose, nevertheless, is to show you how to use libburn and also
16  to serve the libburnia team as reference application. libburner.c does indeed
17  define the standard way how above three gestures can be implemented and
18  stay upward compatible for a good while.
19 
20  Before you can do anything, you have to initialize libburn by
21  burn_initialize()
22  and provide some signal and abort handling, e.g. by the builtin handler, by
23  burn_set_signal_handling("libburner : ", NULL, 0x0)
24  as it is done in main() at the end of this file.
25  Then you aquire a drive in an appropriate way conforming to the API. The twoi
26  main approaches are shown here in application functions:
27  libburner_aquire_by_adr() demonstrates usage as of cdrecord traditions
28  libburner_aquire_by_driveno() demonstrates a scan-and-choose approach
29 
30  With that aquired drive you can blank a CD-RW or DVD-RW as shown in
31  libburner_blank_disc()
32  or you can format a DVD-RW to profile "Restricted Overwrite" (needed once)
33  or an unused BD to default size with spare blocks
34  libburner_format()
35  With the aquired drive you can burn to CD, DVD, BD. See
36  libburner_payload()
37 
38  These three functions switch temporarily to a non-fatal signal handler
39  while they are waiting for the drive to become idle again:
40  burn_set_signal_handling("libburner : ", NULL, 0x30)
41  After the waiting loop ended, they check for eventual abort events by
42  burn_is_aborting(0)
43  The 0x30 handler will eventually execute
44  burn_abort()
45  but not wait for the drive to become idle and not call exit().
46  This is needed because the worker threads might block as long as the signal
47  handler has not returned. The 0x0 handler would wait for them to finish.
48  Take this into respect when implementing own signal handlers.
49 
50  When everything is done, main() releases the drive and shuts down libburn:
51  burn_drive_release();
52  burn_finish()
53 
54  Applications must use 64 bit off_t. E.g. by defining
55  #define _LARGEFILE_SOURCE
56  #define _FILE_OFFSET_BITS 64
57  or take special precautions to interface with the library by 64 bit integers
58  where libburn/libburn.h prescribes off_t.
59  This program gets fed with appropriate settings externally by libburn's
60  autotools generated build system.
61 */
62 
63 
64 /** See this for the decisive API specs . libburn.h is The Original */
65 /* For using the installed header file : #include <libburn/libburn.h> */
66 /* This program insists in the own headerfile. */
67 #include "../libburn/libburn.h"
68 
69 /* libburn works on Linux systems with kernel 2.4 or 2.6, FreeBSD, Solaris */
70 #include <stdio.h>
71 #include <ctype.h>
72 #include <sys/types.h>
73 #include <unistd.h>
74 #include <string.h>
75 #include <stdlib.h>
76 #include <time.h>
77 #include <errno.h>
78 #include <sys/stat.h>
79 #include <fcntl.h>
80 
81 
82 /** For simplicity i use global variables to represent the drives.
83  Drives are systemwide global, so we do not give away much of good style.
84 */
85 
86 /** This list will hold the drives known to libburn. This might be all CD
87  drives of the system and thus might impose severe impact on the system.
88 */
89 static struct burn_drive_info *drive_list;
90 
91 /** If you start a long lasting operation with drive_count > 1 then you are
92  not friendly to the users of other drives on those systems. Beware. */
93 static unsigned int drive_count;
94 
95 /** This variable indicates wether the drive is grabbed and must be
96  finally released */
97 static int drive_is_grabbed = 0;
98 
99 /** A number and a text describing the type of media in aquired drive */
100 static int current_profile= -1;
101 static char current_profile_name[80]= {""};
102 
103 
104 /* Some in-advance definitions to allow a more comprehensive ordering
105  of the functions and their explanations in here */
107 int libburner_aquire_by_driveno(int *drive_no);
108 
109 
110 /* ------------------------------- API gestures ---------------------------- */
111 
112 /** You need to aquire a drive before burning. The API offers this as one
113  compact call and alternatively as application controllable gestures of
114  whitelisting, scanning for drives and finally grabbing one of them.
115 
116  If you have a persistent address of the drive, then the compact call is
117  to prefer because it only touches one drive. On modern Linux kernels,
118  there should be no fatal disturbance of ongoing burns of other libburn
119  instances with any of our approaches. We use open(O_EXCL) by default.
120  On /dev/hdX it should cooperate with growisofs and some cdrecord variants.
121  On /dev/sgN versus /dev/scdM expect it not to respect other programs.
122 */
124 {
125  int ret;
126 
127  if(drive_adr != NULL && drive_adr[0] != 0)
128  ret = libburner_aquire_by_adr(drive_adr);
129  else
130  ret = libburner_aquire_by_driveno(driveno);
131  if (ret <= 0 || *driveno <= 0)
132  return ret;
135  if (current_profile_name[0])
136  printf("Detected media type: %s\n", current_profile_name);
137  return 1;
138 }
139 
140 
141 /** If the persistent drive address is known, then this approach is much
142  more un-obtrusive to the systemwide livestock of drives. Only the
143  given drive device will be opened during this procedure.
144 */
146 {
147  int ret;
148  char libburn_drive_adr[BURN_DRIVE_ADR_LEN];
149 
150  /* Some not-so-harmless drive addresses get blocked in this demo */
151  if (strncmp(drive_adr, "stdio:/dev/fd/", 14) == 0 ||
152  strcmp(drive_adr, "stdio:-") == 0) {
153  fprintf(stderr, "Will not work with pseudo-drive '%s'\n",
154  drive_adr);
155  return 0;
156  }
157 
158  /* This tries to resolve links or alternative device files */
159  ret = burn_drive_convert_fs_adr(drive_adr, libburn_drive_adr);
160  if (ret<=0) {
161  fprintf(stderr, "Address does not lead to a CD burner: '%s'\n",
162  drive_adr);
163  return 0;
164  }
165  fprintf(stderr,"Aquiring drive '%s' ...\n", libburn_drive_adr);
166  ret = burn_drive_scan_and_grab(&drive_list, libburn_drive_adr, 1);
167  if (ret <= 0) {
168  fprintf(stderr,"FAILURE with persistent drive address '%s'\n",
169  libburn_drive_adr);
170  } else {
171  fprintf(stderr,"Done\n");
172  drive_is_grabbed = 1;
173  }
174  return ret;
175 }
176 
177 
178 /** This method demonstrates how to use libburn without knowing a persistent
179  drive address in advance. It has to make sure that after assessing the list
180  of available drives, all unwanted drives get closed again. As long as they
181  are open, no other libburn instance can see them. This is an intended
182  locking feature. The application is responsible for giving up the locks
183  by either burn_drive_release() (only after burn_drive_grab() !),
184  burn_drive_info_forget(), burn_drive_info_free(), or burn_finish().
185  @param driveno the index number in libburn's drive list. This will get
186  set to 0 on success and will then be the drive index to
187  use in the further dourse of processing.
188  @return 1 success , <= 0 failure
189 */
191 {
192  char adr[BURN_DRIVE_ADR_LEN];
193  int ret, i;
194 
195  printf("Beginning to scan for devices ...\n");
196  while (!burn_drive_scan(&drive_list, &drive_count))
197  usleep(100002);
198  if (drive_count <= 0 && *driveno >= 0) {
199  printf("FAILED (no drives found)\n");
200  return 0;
201  }
202  printf("Done\n");
203 
204  /*
205  Interactive programs may choose the drive number at this moment.
206 
207  drive[0] to drive[drive_count-1] are struct burn_drive_info
208  as defined in libburn/libburn.h . This structure is part of API
209  and thus will strive for future compatibility on source level.
210  Have a look at the info offered.
211  Caution: do not take .location for drive address. Always use
212  burn_drive_get_adr() or you might become incompatible
213  in future.
214  Note: bugs with struct burn_drive_info - if any - will not be
215  easy to fix. Please report them but also strive for
216  workarounds on application level.
217  */
218  printf("\nOverview of accessible drives (%d found) :\n",
219  drive_count);
220  printf("-----------------------------------------------------------------------------\n");
221  for (i = 0; i < (int) drive_count; i++) {
222  if (burn_drive_get_adr(&(drive_list[i]), adr) <=0)
223  strcpy(adr, "-get_adr_failed-");
224  printf("%d --drive '%s' : '%s' '%s'\n",
225  i,adr,drive_list[i].vendor,drive_list[i].product);
226  }
227  printf("-----------------------------------------------------------------------------\n\n");
228 
229  /*
230  On multi-drive systems save yourself from sysadmins' revenge.
231 
232  Be aware that you hold reserved all available drives at this point.
233  So either make your choice quick enough not to annoy other system
234  users, or set free the drives for a while.
235 
236  The tested way of setting free all drives is to shutdown the library
237  and to restart when the choice has been made. The list of selectable
238  drives should also hold persistent drive addresses as obtained
239  above by burn_drive_get_adr(). By such an address one may use
240  burn_drive_scan_and_grab() to finally aquire exactly one drive.
241 
242  A not yet tested shortcut should be to call burn_drive_info_free()
243  and to call either burn_drive_scan() or burn_drive_scan_and_grab()
244  before accessing any drives again.
245 
246  In both cases you have to be aware that the desired drive might get
247  aquired in the meantime by another user resp. libburn process.
248  */
249 
250  /* We already made our choice via command line. (default is 0)
251  So we just have to keep our desired drive and drop all others.
252  No other libburn instance will have a chance to steal our drive.
253  */
254  if (*driveno < 0) {
255  printf("Pseudo-drive \"-\" given : bus scanning done.\n");
256  return 2; /* the program will end after this */
257  }
258  if ((int) drive_count <= *driveno) {
259  fprintf(stderr,
260  "Found only %d drives. Number %d not available.\n",
261  drive_count, *driveno);
262  return 0; /* the program will end after this */
263  }
264 
265  /* Drop all drives which we do not want to use */
266  for (i = 0; i < (int) drive_count; i++) {
267  if (i == *driveno) /* the one drive we want to keep */
268  continue;
269  ret = burn_drive_info_forget(&(drive_list[i]),0);
270  if (ret != 1)
271  fprintf(stderr, "Cannot drop drive %d. Please report \"ret=%d\" to libburn-hackers@pykix.org\n",
272  i, ret);
273  else
274  printf("Dropped unwanted drive %d\n",i);
275  }
276  /* Make the one we want ready for blanking or burning */
277  ret= burn_drive_grab(drive_list[*driveno].drive, 1);
278  if (ret != 1)
279  return 0;
280  drive_is_grabbed = 1;
281  return 1;
282 }
283 
284 
285 /** Makes a previously used CD-RW or unformatted DVD-RW ready for thorough
286  re-usal.
287 
288  To our knowledge it is hardly possible to abort an ongoing blank operation
289  because after start it is entirely handled by the drive.
290  So expect signal handling to wait the normal blanking timespan until it
291  can allow the process to end. External kill -9 will not help the drive.
292 */
293 int libburner_blank_disc(struct burn_drive *drive, int blank_fast)
294 {
295  enum burn_disc_status disc_state;
296  struct burn_progress p;
297  double percent = 1.0;
298 
299  disc_state = burn_disc_get_status(drive);
300  printf(
301  "Drive media status: %d (see libburn/libburn.h BURN_DISC_*)\n",
302  disc_state);
303  if (current_profile == 0x13) {
304  ; /* formatted DVD-RW will get blanked to sequential state */
305  } else if (disc_state == BURN_DISC_BLANK) {
306  fprintf(stderr,
307  "IDLE: Blank media detected. Will leave it untouched\n");
308  return 2;
309  } else if (disc_state == BURN_DISC_FULL ||
310  disc_state == BURN_DISC_APPENDABLE) {
311  ; /* this is what libburner is willing to blank */
312  } else if (disc_state == BURN_DISC_EMPTY) {
313  fprintf(stderr,"FATAL: No media detected in drive\n");
314  return 0;
315  } else {
316  fprintf(stderr,
317  "FATAL: Unsuitable drive and media state\n");
318  return 0;
319  }
320  if(!burn_disc_erasable(drive)) {
321  fprintf(stderr,
322  "FATAL : Media is not of erasable type\n");
323  return 0;
324  }
325  /* Switch to asynchronous signal handling for the time of waiting */
326  burn_set_signal_handling("libburner : ", NULL, 0x30);
327 
328  printf("Beginning to %s-blank media.\n", (blank_fast?"fast":"full"));
329  burn_disc_erase(drive, blank_fast);
330 
331  sleep(1);
332  while (burn_drive_get_status(drive, &p) != BURN_DRIVE_IDLE) {
333  if(p.sectors>0 && p.sector>=0) /* display 1 to 99 percent */
334  percent = 1.0 + ((double) p.sector+1.0)
335  / ((double) p.sectors) * 98.0;
336  printf("Blanking ( %.1f%% done )\n", percent);
337  sleep(1);
338  }
339  if (burn_is_aborting(0) > 0)
340  return -1;
341  /* Back to synchronous handling */
342  burn_set_signal_handling("libburner : ", NULL, 0x0);
343  printf("Done\n");
344  return 1;
345 }
346 
347 
348 /** Formats unformatted DVD-RW to profile 0013h "Restricted Overwrite"
349  which needs no blanking for re-use but is not capable of multi-session.
350  Expect a behavior similar to blanking with unusual noises from the drive.
351 
352  Formats unformatted BD-RE to default size. This will allocate some
353  reserve space, test for bad blocks and make the media ready for writing.
354  Expect a very long run time.
355 
356  Formats unformatted blank BD-R to hold a default amount of spare blocks
357  for eventual mishaps during writing. If BD-R get written without being
358  formatted, then they get no such reserve and will burn at full speed.
359 */
360 int libburner_format(struct burn_drive *drive)
361 {
362  struct burn_progress p;
363  double percent = 1.0;
364  int ret, status, num_formats, format_flag= 0;
365  off_t size = 0;
366  unsigned dummy;
367  enum burn_disc_status disc_state;
368 
369  if (current_profile == 0x13) {
370  fprintf(stderr, "IDLE: DVD-RW media is already formatted\n");
371  return 2;
372  } else if (current_profile == 0x41 || current_profile == 0x43) {
373  disc_state = burn_disc_get_status(drive);
374  if (disc_state != BURN_DISC_BLANK && current_profile == 0x41) {
375  fprintf(stderr,
376  "FATAL: BD-R is not blank. Cannot format.\n");
377  return 0;
378  }
379  ret = burn_disc_get_formats(drive, &status, &size, &dummy,
380  &num_formats);
381  if (ret > 0 && status != BURN_FORMAT_IS_UNFORMATTED) {
382  fprintf(stderr,
383  "IDLE: BD media is already formatted\n");
384  return 2;
385  }
386  size = 0; /* does not really matter */
387  format_flag = 3<<1; /* format to default size, no quick */
388  } else if (current_profile == 0x14) { /* sequential DVD-RW */
389  size = 128 * 1024 * 1024;
390  format_flag = 1; /* write initial 128 MiB */
391  } else {
392  fprintf(stderr, "FATAL: Can only format DVD-RW or BD\n");
393  return 0;
394  }
395  burn_set_signal_handling("libburner : ", NULL, 0x30);
396 
397  printf("Beginning to format media.\n");
398  burn_disc_format(drive, size, format_flag);
399 
400  sleep(1);
401  while (burn_drive_get_status(drive, &p) != BURN_DRIVE_IDLE) {
402  if(p.sectors>0 && p.sector>=0) /* display 1 to 99 percent */
403  percent = 1.0 + ((double) p.sector+1.0)
404  / ((double) p.sectors) * 98.0;
405  printf("Formatting ( %.1f%% done )\n", percent);
406  sleep(1);
407  }
408  if (burn_is_aborting(0) > 0)
409  return -1;
410  burn_set_signal_handling("libburner : ", NULL, 0x0);
411  burn_disc_get_profile(drive_list[0].drive, &current_profile,
413  if (current_profile == 0x14 || current_profile == 0x13)
414  printf("Media type now: %4.4xh \"%s\"\n",
416  if (current_profile == 0x14) {
417  fprintf(stderr,
418  "FATAL: Failed to change media profile to desired value\n");
419  return 0;
420  }
421  return 1;
422 }
423 
424 
425 /** Brings preformatted track images (ISO 9660, audio, ...) onto media.
426  To make sure a data image is fully readable on any Linux machine, this
427  function adds 300 kiB of padding to the (usualy single) track.
428  Audio tracks get padded to complete their last sector.
429  A fifo of 4 MB is installed between each track and its data source.
430  Each of the 4 MB buffers gets allocated automatically as soon as a track
431  begins to be processed and it gets freed as soon as the track is done.
432  The fifos do not wait for buffer fill but writing starts immediately.
433 
434  In case of external signals expect abort handling of an ongoing burn to
435  last up to a minute. Wait the normal burning timespan before any kill -9.
436 
437  For simplicity, this function allows memory leaks in case of failure.
438  In apps which do not abort immediately, one should clean up better.
439 */
440 int libburner_payload(struct burn_drive *drive,
441  char source_adr[][4096], int source_adr_count,
442  int multi, int simulate_burn, int all_tracks_type)
443 {
444  struct burn_source *data_src, *fifo_src[99];
445  struct burn_disc *target_disc;
446  struct burn_session *session;
447  struct burn_write_opts *burn_options;
448  enum burn_disc_status disc_state;
449  struct burn_track *track, *tracklist[99];
450  struct burn_progress progress;
451  time_t start_time;
452  int last_sector = 0, padding = 0, trackno, unpredicted_size = 0, fd;
453  int fifo_chunksize = 2352, fifo_chunks = 1783; /* ~ 4 MB fifo */
454  off_t fixed_size;
455  char *adr, reasons[BURN_REASONS_LEN];
456  struct stat stbuf;
457 
458  if (all_tracks_type != BURN_AUDIO) {
459  all_tracks_type = BURN_MODE1;
460  /* a padding of 300 kiB helps to avoid the read-ahead bug */
461  padding = 300*1024;
462  fifo_chunksize = 2048;
463  fifo_chunks = 2048; /* 4 MB fifo */
464  }
465 
466  target_disc = burn_disc_create();
467  session = burn_session_create();
468  burn_disc_add_session(target_disc, session, BURN_POS_END);
469 
470  for (trackno = 0 ; trackno < source_adr_count; trackno++) {
471  tracklist[trackno] = track = burn_track_create();
472  burn_track_define_data(track, 0, padding, 1, all_tracks_type);
473 
474  /* Open file descriptor to source of track data */
475  adr = source_adr[trackno];
476  fixed_size = 0;
477  if (adr[0] == '-' && adr[1] == 0) {
478  fd = 0;
479  } else {
480  fd = open(adr, O_RDONLY);
481  if (fd>=0)
482  if (fstat(fd,&stbuf)!=-1)
483  if((stbuf.st_mode&S_IFMT)==S_IFREG)
484  fixed_size = stbuf.st_size;
485  }
486  if (fixed_size==0)
487  unpredicted_size = 1;
488 
489  /* Convert this filedescriptor into a burn_source object */
490  data_src = NULL;
491  if (fd>=0)
492  data_src = burn_fd_source_new(fd, -1, fixed_size);
493  if (data_src == NULL) {
494  fprintf(stderr,
495  "FATAL: Could not open data source '%s'.\n",adr);
496  if(errno!=0)
497  fprintf(stderr,"(Most recent system error: %s )\n",
498  strerror(errno));
499  return 0;
500  }
501  /* Install a fifo object on top of that data source object */
502  fifo_src[trackno] = burn_fifo_source_new(data_src,
503  fifo_chunksize, fifo_chunks, 0);
504  if (fifo_src[trackno] == NULL) {
505  fprintf(stderr,
506  "FATAL: Could not create fifo object of 4 MB\n");
507  return 0;
508  }
509 
510  /* Use the fifo object as data source for the track */
511  if (burn_track_set_source(track, fifo_src[trackno])
512  != BURN_SOURCE_OK) {
513  fprintf(stderr,
514  "FATAL: Cannot attach source object to track object\n");
515  return 0;
516  }
517 
518  burn_session_add_track(session, track, BURN_POS_END);
519  printf("Track %d : source is '%s'\n", trackno+1, adr);
520 
521  /* Give up local reference to the data burn_source object */
522  burn_source_free(data_src);
523 
524  } /* trackno loop end */
525 
526  /* Evaluate drive and media */
527  disc_state = burn_disc_get_status(drive);
528  if (disc_state != BURN_DISC_BLANK &&
529  disc_state != BURN_DISC_APPENDABLE) {
530  if (disc_state == BURN_DISC_FULL) {
531  fprintf(stderr, "FATAL: Closed media with data detected. Need blank or appendable media.\n");
532  if (burn_disc_erasable(drive))
533  fprintf(stderr, "HINT: Try --blank_fast\n\n");
534  } else if (disc_state == BURN_DISC_EMPTY)
535  fprintf(stderr,"FATAL: No media detected in drive\n");
536  else
537  fprintf(stderr,
538  "FATAL: Cannot recognize state of drive and media\n");
539  return 0;
540  }
541 
542  burn_options = burn_write_opts_new(drive);
543  burn_write_opts_set_perform_opc(burn_options, 0);
544  burn_write_opts_set_multi(burn_options, !!multi);
545  if(simulate_burn)
546  printf("\n*** Will TRY to SIMULATE burning ***\n\n");
547  burn_write_opts_set_simulate(burn_options, simulate_burn);
548  burn_drive_set_speed(drive, 0, 0);
549  burn_write_opts_set_underrun_proof(burn_options, 1);
550  if (burn_write_opts_auto_write_type(burn_options, target_disc,
551  reasons, 0) == BURN_WRITE_NONE) {
552  fprintf(stderr, "FATAL: Failed to find a suitable write mode with this media.\n");
553  fprintf(stderr, "Reasons given:\n%s\n", reasons);
554  return 0;
555  }
556  burn_set_signal_handling("libburner : ", NULL, 0x30);
557 
558  printf("Burning starts. With e.g. 4x media expect up to a minute of zero progress.\n");
559  start_time = time(0);
560  burn_disc_write(burn_options, target_disc);
561 
562  burn_write_opts_free(burn_options);
563  while (burn_drive_get_status(drive, NULL) == BURN_DRIVE_SPAWNING)
564  usleep(100002);
565  while (burn_drive_get_status(drive, &progress) != BURN_DRIVE_IDLE) {
566  if (progress.sectors <= 0 ||
567  (progress.sector >= progress.sectors - 1 &&
568  !unpredicted_size) ||
569  (unpredicted_size && progress.sector == last_sector))
570  printf(
571  "Thank you for being patient since %d seconds.",
572  (int) (time(0) - start_time));
573  else if(unpredicted_size)
574  printf("Track %d : sector %d", progress.track+1,
575  progress.sector);
576  else
577  printf("Track %d : sector %d of %d",progress.track+1,
578  progress.sector, progress.sectors);
579  last_sector = progress.sector;
580  if (progress.track >= 0 && progress.track < source_adr_count) {
581  int size, free_bytes, ret;
582  char *status_text;
583 
585  fifo_src[progress.track], &size, &free_bytes,
586  &status_text);
587  if (ret >= 0 )
588  printf(" [fifo %s, %2d%% fill]", status_text,
589  (int) (100.0 - 100.0 *
590  ((double) free_bytes) /
591  (double) size));
592  }
593  printf("\n");
594  sleep(1);
595  }
596  printf("\n");
597 
598  for (trackno = 0 ; trackno < source_adr_count; trackno++) {
599  burn_source_free(fifo_src[trackno]);
600  burn_track_free(tracklist[trackno]);
601  }
602  burn_session_free(session);
603  burn_disc_free(target_disc);
604  if (burn_is_aborting(0) > 0)
605  return -1;
606  if (multi && current_profile != 0x1a && current_profile != 0x13 &&
607  current_profile != 0x12 && current_profile != 0x43)
608  /* not with DVD+RW, formatted DVD-RW, DVD-RAM, BD-RE */
609  printf("NOTE: Media left appendable.\n");
610  if (simulate_burn)
611  printf("\n*** Did TRY to SIMULATE burning ***\n\n");
612  return 1;
613 }
614 
615 
616 /** The setup parameters of libburner */
617 static char drive_adr[BURN_DRIVE_ADR_LEN] = {""};
618 static int driveno = 0;
619 static int do_blank = 0;
620 static char source_adr[99][4096];
621 static int source_adr_count = 0;
622 static int do_multi = 0;
623 static int simulate_burn = 0;
625 
626 
627 /** Converts command line arguments into above setup parameters.
628 */
629 int libburner_setup(int argc, char **argv)
630 {
631  int i, insuffient_parameters = 0, print_help = 0;
632 
633  for (i = 1; i < argc; ++i) {
634  if (!strcmp(argv[i], "--audio")) {
636 
637  } else if (!strcmp(argv[i], "--blank_fast")) {
638  do_blank = 1;
639 
640  } else if (!strcmp(argv[i], "--blank_full")) {
641  do_blank = 2;
642 
643  } else if (!strcmp(argv[i], "--burn_for_real")) {
644  simulate_burn = 0;
645 
646  } else if (!strcmp(argv[i], "--drive")) {
647  ++i;
648  if (i >= argc) {
649  fprintf(stderr,"--drive requires an argument\n");
650  return 1;
651  } else if (strcmp(argv[i], "-") == 0) {
652  drive_adr[0] = 0;
653  driveno = -1;
654  } else if (isdigit(argv[i][0])) {
655  drive_adr[0] = 0;
656  driveno = atoi(argv[i]);
657  } else {
658  if(strlen(argv[i]) >= BURN_DRIVE_ADR_LEN) {
659  fprintf(stderr,"--drive address too long (max. %d)\n",
661  return 2;
662  }
663  strcpy(drive_adr, argv[i]);
664  }
665  } else if ((!strcmp(argv[i], "--format_overwrite")) ||
666  (!strcmp(argv[i], "--format"))) {
667  do_blank = 101;
668 
669  } else if (!strcmp(argv[i], "--multi")) {
670  do_multi = 1;
671 
672  } else if (!strcmp(argv[i], "--stdin_size")) { /* obsoleted */
673  i++;
674 
675  } else if (!strcmp(argv[i], "--try_to_simulate")) {
676  simulate_burn = 1;
677 
678  } else if (!strcmp(argv[i], "--help")) {
679  print_help = 1;
680 
681  } else if (!strncmp(argv[i], "--",2)) {
682  fprintf(stderr, "Unidentified option: %s\n", argv[i]);
683  return 7;
684  } else {
685  if(strlen(argv[i]) >= 4096) {
686  fprintf(stderr, "Source address too long (max. %d)\n", 4096-1);
687  return 5;
688  }
689  if(source_adr_count >= 99) {
690  fprintf(stderr, "Too many tracks (max. 99)\n");
691  return 6;
692  }
693  strcpy(source_adr[source_adr_count], argv[i]);
694  source_adr_count++;
695  }
696  }
697  insuffient_parameters = 1;
698  if (driveno < 0)
699  insuffient_parameters = 0;
700  if (source_adr_count > 0)
701  insuffient_parameters = 0;
702  if (do_blank)
703  insuffient_parameters = 0;
704  if (print_help || insuffient_parameters ) {
705  printf("Usage: %s\n", argv[0]);
706  printf(" [--drive <address>|<driveno>|\"-\"] [--audio]\n");
707  printf(" [--blank_fast|--blank_full|--format] [--try_to_simulate]\n");
708  printf(" [--multi] [<one or more imagefiles>|\"-\"]\n");
709  printf("Examples\n");
710  printf("A bus scan (needs rw-permissions to see a drive):\n");
711  printf(" %s --drive -\n",argv[0]);
712  printf("Burn a file to drive chosen by number, leave appendable:\n");
713  printf(" %s --drive 0 --multi my_image_file\n", argv[0]);
714  printf("Burn a file to drive chosen by persistent address, close:\n");
715  printf(" %s --drive /dev/hdc my_image_file\n", argv[0]);
716  printf("Blank a used CD-RW (is combinable with burning in one run):\n");
717  printf(" %s --drive /dev/hdc --blank_fast\n",argv[0]);
718  printf("Blank a used DVD-RW (is combinable with burning in one run):\n");
719  printf(" %s --drive /dev/hdc --blank_full\n",argv[0]);
720  printf("Format a DVD-RW, BD-RE or BD-R:\n");
721  printf(" %s --drive /dev/hdc --format\n", argv[0]);
722  printf("Burn two audio tracks (to CD only):\n");
723  printf(" lame --decode -t /path/to/track1.mp3 track1.cd\n");
724  printf(" test/dewav /path/to/track2.wav -o track2.cd\n");
725  printf(" %s --drive /dev/hdc --audio track1.cd track2.cd\n", argv[0]);
726  printf("Burn a compressed afio archive on-the-fly:\n");
727  printf(" ( cd my_directory ; find . -print | afio -oZ - ) | \\\n");
728  printf(" %s --drive /dev/hdc -\n", argv[0]);
729  printf("To be read from *not mounted* media via: afio -tvZ /dev/hdc\n");
730  if (insuffient_parameters)
731  return 6;
732  }
733  return 0;
734 }
735 
736 
737 int main(int argc, char **argv)
738 {
739  int ret;
740 
741  /* A warning to programmers who start their own projekt from here. */
742  if (sizeof(off_t) != 8) {
743  fprintf(stderr,
744  "\nFATAL: Compile time misconfiguration. off_t is not 64 bit.\n\n");
745  exit(39);
746  }
747 
748  ret = libburner_setup(argc, argv);
749  if (ret)
750  exit(ret);
751 
752  printf("Initializing libburnia-project.org ...\n");
753  if (burn_initialize())
754  printf("Done\n");
755  else {
756  printf("FAILED\n");
757  fprintf(stderr,"\nFATAL: Failed to initialize.\n");
758  exit(33);
759  }
760 
761  /* Print messages of severity SORRY or more directly to stderr */
762  burn_msgs_set_severities("NEVER", "SORRY", "libburner : ");
763 
764  /* Activate the synchronous signal handler which eventually will try to
765  properly shutdown drive and library on aborting events. */
766  burn_set_signal_handling("libburner : ", NULL, 0x0);
767 
768  /** Note: driveno might change its value in this call */
770  if (ret<=0) {
771  fprintf(stderr,"\nFATAL: Failed to aquire drive.\n");
772  { ret = 34; goto finish_libburn; }
773  }
774  if (ret == 2)
775  { ret = 0; goto release_drive; }
776  if (do_blank) {
777  if (do_blank > 100)
778  ret = libburner_format(drive_list[driveno].drive);
779  else
780  ret = libburner_blank_disc(drive_list[driveno].drive,
781  do_blank == 1);
782  if (ret<=0)
783  { ret = 36; goto release_drive; }
784  }
785  if (source_adr_count > 0) {
786  ret = libburner_payload(drive_list[driveno].drive,
789  if (ret<=0)
790  { ret = 38; goto release_drive; }
791  }
792  ret = 0;
793 release_drive:;
794  if (drive_is_grabbed)
795  burn_drive_release(drive_list[driveno].drive, 0);
796 
797 finish_libburn:;
798  if (burn_is_aborting(0) > 0) {
799  burn_abort(4400, burn_abort_pacifier, "libburner : ");
800  fprintf(stderr,"\nlibburner run aborted\n");
801  exit(1);
802  }
803  /* This app does not bother to know about exact scan state.
804  Better to accept a memory leak here. We are done anyway. */
805  /* burn_drive_info_free(drive_list); */
806  burn_finish();
807  exit(ret);
808 }
809 
810 
811 /* License and copyright aspects:
812 
813 This all is provided under GPL.
814 Read. Try. Think. Play. Write yourself some code. Be free of my copyright.
815 
816 Be also invited to study the code of cdrskin/cdrskin.c et al.
817 
818 History:
819 libburner is a compilation of my own contributions to test/burniso.c and
820 fresh code which replaced the remaining parts under copyright of
821 Derek Foreman.
822 My respect and my thanks to Derek for providing me a start back in 2005.
823 
824 */
825