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dceab3f80d9fa6f205bba435aba18131ee4182fa
[dvdrip] / dvd-sector-copy.c
1 #define _GNU_SOURCE
2 #define _FILE_OFFSET_BITS 64
3
4 #include <assert.h>
5 #include <ctype.h>
6 #include <errno.h>
7 #include <inttypes.h>
8 #include <math.h>
9 #include <stdarg.h>
10 #include <stdint.h>
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h>
14 #include <time.h>
15
16 #include <unistd.h>
17 #include <fcntl.h>
18 #include <sys/ioctl.h>
19 #include <sys/stat.h>
20 #include <sys/time.h>
21
22 #include <getopt.h>
23
24 #include <linux/fs.h>
25
26 #include <dvdread/dvd_reader.h>
27 #include <dvdread/dvd_udf.h>
28 #include <dvdread/ifo_read.h>
29 #include <dvdread/ifo_types.h>
30
31 #define CTYPE_HACK(fn, ch) fn((unsigned char)(ch))
32 #define ISDIGIT(ch) CTYPE_HACK(isdigit, ch)
33 #define ISSPACE(ch) CTYPE_HACK(isspace, ch)
34
35 #define N(v) (sizeof(v)/sizeof((v)[0]))
36
37 #define SECTORSZ 2048
38 #define SECTORS(n) (((n) + (SECTORSZ - 1))/SECTORSZ)
39
40 static const char *prog = "<unset>";
41 static int status = 0;
42
43 static void usage(FILE *fp)
44 {
45 fprintf(fp,
46 "usage: %s [-c] [-D DEV] [-R MAP] "
47 "[-b OUTMAP] [-o OUTFILE] [-r [START]-[END]]\n",
48 prog);
49 }
50
51 static void vmoan(const char *fmt, va_list ap)
52 { fprintf(stderr, "%s: ", prog); vfprintf(stderr, fmt, ap); }
53
54 __attribute__((format(printf, 1, 2)))
55 static void moan(const char *fmt, ...)
56 {
57 va_list ap;
58
59 va_start(ap, fmt); vmoan(fmt, ap); va_end(ap);
60 fputc('\n', stderr);
61 }
62
63 __attribute__((noreturn, format(printf, 1, 2)))
64 static void bail(const char *fmt, ...)
65 {
66 va_list ap;
67
68 va_start(ap, fmt); vmoan(fmt, ap); va_end(ap);
69 fputc('\n', stderr);
70 exit(2);
71 }
72
73 __attribute__((noreturn, format(printf, 2, 3)))
74 static void bail_syserr(int err, const char *fmt, ...)
75 {
76 va_list ap;
77
78 va_start(ap, fmt); vmoan(fmt, ap); va_end(ap);
79 if (err) fprintf(stderr, ": %s", strerror(errno));
80 fputc('\n', stderr);
81 exit(2);
82 }
83
84 static void carefully_write(int fd, const void *buf, size_t sz)
85 {
86 const unsigned char *p = buf;
87 ssize_t n;
88
89 if (fd < 0) return;
90 while (sz) {
91 n = write(fd, p, sz);
92 if (n < 0) {
93 if (errno == EINTR) continue;
94 bail_syserr(errno, "failed to write to output file");
95 }
96 if (!n) bail("unexpected short write to output file");
97 p += n; sz -= n;
98 }
99 }
100
101 #define DEFVEC(vtype, etype) \
102 typedef struct { etype *v; size_t n, sz; } vtype
103 #define VEC_INIT { 0, 0, 0 }
104 #define VEC_FREE(vv) do { \
105 free((vv)->v); (vv)->v 0; (vv)->n = (vv)->sz = 0; \
106 } while (0)
107 #define VEC_PUSH(p, vv) do { \
108 size_t _want; \
109 if ((vv)->n >= (vv)->sz) { \
110 (vv)->sz = (vv)->sz ? 2*(vv)->sz : 32; \
111 _want = (vv)->sz*sizeof(*(vv)->v); \
112 (vv)->v = realloc((vv)->v, _want); \
113 if (!(vv)->v) bail("out of memory allocating %zu bytes", _want); \
114 } \
115 (p) = &(vv)->v[(vv)->n++]; \
116 } while (0)
117
118 enum { RAW, IFO, VOB, BUP };
119 typedef uint_least32_t ident;
120
121 static inline ident mkident(unsigned kind, unsigned title, unsigned part)
122 { return (((ident)kind << 0) | ((ident)title << 8) | ((ident)part << 16)); }
123 static inline unsigned id_kind(ident id) { return ((id >> 0)&0x0ff); }
124 static inline unsigned id_title(ident id) { return ((id >> 8)&0x0ff); }
125 static inline unsigned id_part(ident id) { return ((id >> 16)&0x0ff); }
126
127 #define MAXFNSZ (1 + 8 + 1 + 12 + 1)
128
129 static void store_filename(char *buf, ident id)
130 {
131 switch (id_kind(id)) {
132 case RAW:
133 sprintf(buf, "#<raw device>");
134 break;
135 case IFO:
136 if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.IFO");
137 else sprintf(buf, "/VIDEO_TS/VTS_%02u_0.IFO", id_title(id));
138 break;
139 case BUP:
140 if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.BUP");
141 else sprintf(buf, "/VIDEO_TS/VTS_%02u_0.BUP", id_title(id));
142 break;
143 case VOB:
144 if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.VOB");
145 else
146 sprintf(buf, "/VIDEO_TS/VTS_%02u_%u.VOB", id_title(id), id_part(id));
147 break;
148 default:
149 abort();
150 }
151 }
152
153 typedef uint_least32_t secaddr;
154 #define PRIuSEC PRIuLEAST32
155
156 #define MAXFILES (1 + 2*99 + 1)
157 struct file {
158 ident id;
159 secaddr start, end;
160 };
161 DEFVEC(file_v, struct file);
162 static file_v filetab = VEC_INIT;
163
164 enum { EV_STOP, EV_BEGIN, EV_END, EV_WRITE };
165 struct event {
166 unsigned char ev, file;
167 secaddr pos;
168 };
169 DEFVEC(event_v, struct event);
170 static event_v eventq = VEC_INIT;
171
172 static int compare_event(const void *a, const void *b)
173 {
174 const struct event *eva = a, *evb = b;
175
176 if (eva->pos < evb->pos) return (-1);
177 else if (eva->pos > evb->pos) return (+1);
178
179 if (eva->ev < evb->ev) return (-1);
180 else if (eva->ev > evb->ev) return (+1);
181
182 if (eva->file < evb->file) return (-1);
183 else if (eva->file > evb->file) return (+1);
184
185 return (0);
186 }
187
188 typedef uint_least32_t bits;
189 static bits live[(MAXFILES + 31)/32];
190
191 static inline int livep(unsigned i)
192 { return (live[i/32]&((bits)1 << (i%32))); }
193 static inline void set_live(unsigned i)
194 { live[i/32] |= (bits)1 << (i%32); }
195 static inline void clear_live(unsigned i)
196 { live[i/32] &= ~((bits)1 << (i%32)); }
197 static inline int least_live(void)
198 {
199 unsigned i, n = (filetab.n + 32)/32;
200 bits b;
201
202 for (i = 0; i < n; i++) { b = live[i]; if (b) goto found; }
203 return (-1);
204 found:
205 i *= 32;
206 if (!(b&0x0000ffff)) { b >>= 16; i += 16; }
207 if (!(b&0x000000ff)) { b >>= 8; i += 8; }
208 if (!(b&0x0000000f)) { b >>= 4; i += 4; }
209 if (!(b&0x00000003)) { b >>= 2; i += 2; }
210 if (!(b&0x00000001)) { b >>= 1; i += 1; }
211 assert(b&1);
212 return (i);
213 }
214
215 static void put_event(unsigned evtype, unsigned file, secaddr pos)
216 {
217 struct event *ev;
218
219 VEC_PUSH(ev, &eventq);
220 ev->ev = evtype; ev->file = file; ev->pos = pos;
221 }
222
223 static void put_file(ident id, secaddr start, secaddr end)
224 {
225 struct file *f;
226 size_t i;
227
228 VEC_PUSH(f, &filetab); i = f - filetab.v;
229 f->id = id; f->start = start; f->end = end;
230 put_event(EV_BEGIN, i, start);
231 put_event(EV_END, i, end);
232 }
233
234 static void put_menu(dvd_reader_t *dvd, unsigned title)
235 {
236 ident id = mkident(VOB, title, 0);
237 char fn[MAXFNSZ];
238 secaddr start, len;
239
240 store_filename(fn, id);
241 start = UDFFindFile(dvd, fn, &len); if (!start) return;
242 #ifdef DEBUG
243 printf(";; %8"PRIuSEC" .. %-8"PRIuSEC": %s\n",
244 start, start + SECTORS(len), fn);
245 #endif
246 put_file(id, start, start + SECTORS(len));
247 }
248
249 static void put_title(dvd_reader_t *dvd, unsigned title)
250 {
251 char fn[MAXFNSZ];
252 secaddr start[9], len[9];
253 unsigned i, npart;
254
255 for (i = 0; i < 9; i++) {
256 store_filename(fn, mkident(VOB, title, i + 1));
257 start[i] = UDFFindFile(dvd, fn, &len[i]); if (!start[i]) break;
258 }
259 npart = i; if (!npart) return;
260
261 #ifdef DEBUG
262 for (i = 0; i < npart; i++) {
263 store_filename(fn, mkident(VOB, title, i + 1));
264 printf(";; %8"PRIuSEC" .. %-8"PRIuSEC": %s\n",
265 start[i], start[i] + SECTORS(len[i]), fn);
266 }
267 #endif
268
269 if (npart > 1)
270 for (i = 0; i < npart - 1; i++) {
271 if (len[i]%SECTORSZ)
272 bail("title %u part %u length = %"PRIuSEC" not a multiple of %d",
273 title, i, len[i], SECTORSZ);
274 if (start[i] + len[i]/SECTORSZ != start[i + 1])
275 bail
276 ("title %u part %u end = %"PRIuSEC" /= part %u start = %"PRIuSEC"",
277 title, i, start[i] + len[i]/SECTORSZ, i + 1, start[i + 1]);
278 }
279
280 put_file(mkident(VOB, title, 1),
281 start[0], start[npart - 1] + SECTORS(len[npart - 1]));
282 }
283
284 static int progresslen = 0;
285
286 static void clear_progress_internal(void)
287 { while (progresslen) { fputs("\b \b", stdout); progresslen--; } }
288 static void clear_progress(void)
289 { clear_progress_internal(); fflush(stdout); }
290 static void vappend_progress(const char *fmt, va_list ap)
291 { progresslen += vprintf(fmt, ap); }
292 __attribute__((format(printf, 1, 2)))
293 static void append_progress(const char *fmt, ...)
294 {
295 va_list ap;
296
297 va_start(ap, fmt);
298 vappend_progress(fmt, ap);
299 va_end(ap);
300 }
301 __attribute__((format(printf, 1, 2)))
302 static void print_progress(const char *fmt, ...)
303 {
304 va_list ap;
305
306 va_start(ap, fmt);
307 clear_progress_internal();
308 vappend_progress(fmt, ap);
309 va_end(ap);
310 }
311
312 unsigned flags;
313 # define F_ALLPROGRESS 1u
314 static secaddr last_pos, limit, nsectors, ndone;
315 static struct timeval last_time;
316 static double wsum, wcount;
317 static struct file *file;
318
319 static void report_progress(secaddr pos)
320 {
321 char etastr[32];
322 struct timeval now;
323 int eta;
324 double percent, t, f, g, rate;
325 char *unit;
326
327 #define ALPHA 0.02
328 #define BETA (1 - ALPHA)
329
330 gettimeofday(&now, 0);
331 t = (now.tv_sec - last_time.tv_sec) +
332 (now.tv_usec - last_time.tv_usec)/1000000.0;
333
334 if (t) {
335 g = wcount ? pow(BETA, t) : 0.0; f = (1 - g)/(1 - BETA);
336 wsum = f*(pos - last_pos)/t + g*wsum;
337 wcount = f + g*wcount;
338 ndone += pos - last_pos;
339 last_time = now; last_pos = pos;
340 }
341
342 if (!wsum || !wcount)
343 { rate = 0; strcpy(etastr, "???"); }
344 else {
345 rate = wsum/wcount;
346 eta = (int)((nsectors - ndone)/rate);
347 sprintf(etastr, "%d:%02d:%02d", eta/3600, (eta/60)%60, eta%60);
348 }
349
350 rate *= SECTORSZ; unit = "";
351 if (rate > 128) { rate /= 1024; unit = "k"; }
352 if (rate > 128) { rate /= 1024; unit = "M"; }
353 if (rate > 128) { rate /= 1024; unit = "G"; }
354
355 if (flags&F_ALLPROGRESS) percent = pos*100.0/limit;
356 else percent = ndone*100.0/nsectors;
357 print_progress
358 ("copied %.1f%% (%"PRIuSEC" of %"PRIuSEC"; %.1f %sB/s, ETA %s)",
359 percent, pos, limit, rate, unit, etastr);
360 if (file && id_kind(file->id) == VOB) {
361 append_progress(" -- %s %d %3.1f%%",
362 id_part(file->id) ? "title" : "menu",
363 id_title(file->id),
364 (pos - file->start)*100.0/
365 (file->end - file->start));
366 }
367
368 #undef ALPHA
369 #undef BETA
370 }
371
372 static void report_bad_blocks_progress(secaddr lo, secaddr hi, int err)
373 {
374 report_progress(hi);
375
376 if (lo == hi) append_progress(": retrying bad sector");
377 else
378 append_progress(": %"PRIuSEC" bad %s",
379 hi - lo, hi == lo + 1 ? "sector" : "sectors");
380 if (err != EIO) append_progress(" (%s)", strerror(err));
381 fflush(stdout);
382 }
383
384 static dvd_reader_t *dvd;
385 static int dvdfd = -1, outfd = -1;
386 static dvd_file_t *vob;
387 static const char *mapfile; static FILE *mapfp;
388
389 static ssize_t read_sectors(secaddr pos, void *buf, secaddr want)
390 {
391 ssize_t n;
392
393 again:
394 if (vob)
395 n = DVDReadBlocks(vob, pos - file->start, want, buf);
396 else if (file) {
397 if (lseek(dvdfd, (off_t)pos*SECTORSZ, SEEK_SET) < 0)
398 bail_syserr(errno, "failed to seek to sector %"PRIuSEC"", pos);
399 n = read(dvdfd, buf, want*SECTORSZ);
400 if (n >= 0) n /= SECTORSZ;
401 } else {
402 memset(buf, 0, want*SECTORSZ);
403 n = want;
404 }
405
406 if (n < 0 && errno == EINTR) goto again;
407 return (n);
408 }
409
410 static void emit(secaddr start, secaddr end)
411 {
412 #define BUFSECTORS 512
413
414 int least, i;
415 unsigned char buf[BUFSECTORS*SECTORSZ];
416 secaddr pos;
417 secaddr bad_lo, bad_hi, good, step;
418 size_t want;
419 ssize_t n;
420 static int first_time = 1;
421 #ifdef DEBUG
422 struct file *f;
423 char fn[MAXFNSZ];
424 int act = -1;
425 #endif
426
427 least = least_live();
428
429 #ifdef DEBUG
430 printf(";; %8"PRIuSEC" .. %"PRIuSEC"\n", start, end);
431
432 for (i = 0; i < filetab.n; i++) {
433 if (!livep(i)) continue;
434 if (act == -1) act = i;
435 f = &filetab.v[i]; store_filename(fn, f->id);
436 printf(";;\t\t%8"PRIuSEC" .. %-8"PRIuSEC" %s\n",
437 start - f->start, end - f->start, fn);
438 }
439 if (act == -1) printf(";;\t\t#<no live source>\n");
440 assert(act == least);
441 #endif
442
443 if (least == -1)
444 { file = 0; vob = 0; }
445 else {
446 file = &filetab.v[least];
447 switch (id_kind(file->id)) {
448 case RAW:
449 vob = 0;
450 break;
451 case VOB:
452 if (first_time) { clear_progress(); first_time = 0; }
453 vob = DVDOpenFile(dvd, id_title(file->id),
454 id_part(file->id)
455 ? DVD_READ_TITLE_VOBS
456 : DVD_READ_MENU_VOBS);
457 if (!vob)
458 bail("failed to open %s %u",
459 id_part(file->id) ? "title" : "menu",
460 id_title(file->id));
461 break;
462 default:
463 abort();
464 }
465 }
466
467 pos = start;
468 while (pos < end) {
469 want = end - pos; if (want > BUFSECTORS) want = BUFSECTORS;
470 n = read_sectors(pos, buf, want);
471
472 if (n <= 0) {
473 report_bad_blocks_progress(pos, pos, errno);
474 for (i = 0; i < 4; i++) {
475 n = read_sectors(pos, buf, 1);
476 if (n > 0) {
477 clear_progress();
478 moan("sector %"PRIuSEC" read ok after retry", pos);
479 bad_lo = bad_hi = pos;
480 goto recovered;
481 }
482 }
483
484 bad_lo = pos; step = 1; bad_hi = pos + 1;
485 for (;;) {
486 report_bad_blocks_progress(bad_lo, bad_hi, errno);
487 if (bad_hi >= end) {
488 clear_progress();
489 moan("giving up on this extent");
490 n = 0; goto recovered;
491 }
492 step *= 2;
493 if (step > end - bad_lo) step = end - bad_lo;
494 pos = bad_lo + step - 1;
495 n = read_sectors(pos, buf, 1);
496 if (n > 0) break;
497 bad_hi = pos + 1;
498 }
499
500 good = pos;
501 while (good > bad_hi) {
502 report_bad_blocks_progress(bad_lo, bad_hi, errno);
503 pos = bad_hi + (good - bad_hi)/2;
504 n = read_sectors(pos, buf, 1);
505 if (n > 0) good = pos;
506 else bad_hi = pos + 1;
507 }
508 recovered:
509 if (bad_hi > bad_lo) {
510 clear_progress();
511 moan("skipping %"PRIuSEC" bad sectors (%"PRIuSEC" .. %"PRIuSEC")",
512 bad_hi - bad_lo, bad_lo, bad_hi);
513 if (mapfile) {
514 if (!mapfp) {
515 mapfp = fopen(mapfile, "w");
516 if (!mapfp)
517 bail_syserr(errno, "failed to open bad-sector map file `%s'",
518 optarg);
519 fprintf(mapfp, "## bad sector map\n\n");
520 }
521 fprintf(mapfp, "%"PRIuSEC" %"PRIuSEC"\n", bad_lo, bad_hi);
522 fflush(mapfp);
523 if (ferror(mapfp))
524 bail_syserr(errno, "error writing bad-sector map file");
525 }
526 if (outfd >= 0 &&
527 lseek(outfd, (off_t)(bad_hi - bad_lo)*SECTORSZ, SEEK_CUR) < 0)
528 bail_syserr(errno, "failed to seek past bad sectors");
529 status = 1;
530 }
531 pos = bad_hi;
532 }
533
534 if (n > 0) { carefully_write(outfd, buf, n*SECTORSZ); pos += n; }
535 report_progress(pos); fflush(stdout);
536 }
537
538 if (vob) { DVDCloseFile(vob); vob = 0; }
539
540 #undef BUFSECTORS
541 }
542
543 #ifdef notdef
544 static void logfn(void *p, dvd_logger_level_t lev,
545 const char *fmt, va_list ap)
546 {
547 switch (lev) {
548 case DVD_LOGGER_LEVEL_ERROR:
549 fprintf("%s (libdvdread error): ", prog);
550 break;
551 case DVD_LOGGER_LEVEL_WARN:
552 fprintf("%s (libdvdread warning): ", prog);
553 break;
554 default:
555 return;
556 }
557 vfprintf(stderr, fmt, ap);
558 fputc('\n', stderr);
559 }
560 static const dvd_logger_cb logger = { logfn };
561 #endif
562
563 struct buf {
564 char *p;
565 size_t n, sz;
566 };
567 #define BUF_INIT { 0, 0, 0 }
568 #define BUF_REWIND(b) do { (b)->n = 0; } while (0)
569 #define BUF_FREE(b) do { \
570 buf *_b = (b); \
571 free(_b->p); _b->p = 0; _b->n = _b->sz = 0; \
572 } while (0)
573 #define BUF_PUTC(b, ch) do { \
574 struct buf *_b = (b); \
575 if (_b->n >= _b->sz) { \
576 _b->sz = _b->sz ? 2*_b->sz : 32; \
577 _b->p = realloc(_b->p, _b->sz); \
578 if (!_b->p) bail("out of memory allocating %zu bytes", _b->sz); \
579 } \
580 _b->p[_b->n] = (ch); \
581 } while (0)
582
583 static int read_line(FILE *fp, struct buf *b)
584 {
585 int ch;
586
587 ch = getc(fp);
588 if (ch == EOF)
589 return (-1);
590 else if (ch != '\n') do {
591 BUF_PUTC(b, ch); b->n++;
592 ch = getc(fp);
593 } while (ch != EOF && ch != '\n');
594 BUF_PUTC(b, 0);
595 return (0);
596 }
597
598 int main(int argc, char *argv[])
599 {
600 unsigned f = 0;
601 char *p;
602 uint64_t volsz;
603 secaddr pos;
604 off_t off;
605 unsigned long start, end;
606 const struct event *ev;
607 const char *device = "/dev/dvd", *outfile = 0;
608 int opt, blksz;
609 unsigned n;
610 size_t i;
611 FILE *fp;
612 struct buf buf = BUF_INIT;
613 struct stat st;
614 #ifdef DEBUG
615 const struct file *file;
616 char fn[MAXFNSZ];
617 #endif
618
619 #define f_bogus 1u
620 #define f_continue 2u
621 #define f_fixup 4u
622 #define f_write 256u
623
624 p = strrchr(argv[0], '/'); prog = p ? p + 1 : argv[0];
625 for (;;) {
626 opt = getopt(argc, argv, "hD:FR:b:co:r:"); if (opt < 0) break;
627 switch (opt) {
628 case 'h': usage(stderr); exit(0);
629 case 'D': device = optarg; break;
630 case 'F': f |= f_fixup; break;
631 case 'R':
632 fp = fopen(optarg, "r");
633 if (!fp)
634 bail_syserr(errno, "failed to open ranges file `%s'", optarg);
635 i = 0;
636 for (;;) {
637 BUF_REWIND(&buf); if (read_line(fp, &buf)) break;
638 p = buf.p; i++;
639 while (ISSPACE(*p)) p++;
640 if (!*p || *p == '#') continue;
641 if (!ISDIGIT(*p)) goto bad_range_file;
642 start = strtoul(p, &p, 0);
643 if (errno || !ISSPACE(*p)) goto bad_range_file;
644 do p++; while (ISSPACE(*p));
645 if (!ISDIGIT(*p)) goto bad_range_file;
646 end = strtoul(p, &p, 0);
647 if (errno || (*p && !ISSPACE(*p))) goto bad_range_file;
648 while (ISSPACE(*p)) p++;
649 if (*p) goto bad_range_file;
650 if (start > end) goto bad_range_file;
651 if (start < end) {
652 put_event(EV_WRITE, 0, start);
653 put_event(EV_STOP, 0, end);
654 }
655 }
656 if (ferror(fp))
657 bail_syserr(errno, "failed to read ranges file `%s'", optarg);
658 break;
659 bad_range_file:
660 bail("bad range `%s' at `%s' line %zu", buf.p, optarg, i);
661 case 'b':
662 if (mapfile) bail("can't have multiple map files");
663 mapfile = optarg;
664 break;
665 case 'c': f |= f_continue; break;
666 case 'o': outfile = optarg; break;
667 case 'r':
668 err = errno; errno = 0;
669 p = optarg;
670 if (*p == '-')
671 start = 0;
672 else {
673 if (!ISDIGIT(*p)) goto bad_range;
674 start = strtoul(p, &p, 0);
675 if (errno || *p != '-') goto bad_range;
676 }
677 p++;
678 if (!*p)
679 put_event(EV_WRITE, 0, start);
680 else {
681 if (!ISDIGIT(*p)) goto bad_range;
682 end = strtoul(p, &p, 0);
683 if (errno || *p) goto bad_range;
684 if (start > end) goto bad_range;
685 if (start < end) {
686 put_event(EV_WRITE, 0, start);
687 put_event(EV_STOP, 0, end);
688 }
689 }
690 errno = err;
691 break;
692 bad_range:
693 bail("bad range `%s'", optarg);
694 break;
695 default: f |= f_bogus; break;
696 }
697 }
698 if (optind < argc) f |= f_bogus;
699 if (f&f_bogus) { usage(stderr); exit(2); }
700
701 dvdfd = open(device, O_RDONLY);
702 if (dvdfd < 0)
703 bail_syserr(errno, "failed to open device `%s'", device);
704 if (fstat(dvdfd, &st))
705 bail_syserr(errno, "failed to stat device `%s'", device);
706 if (S_ISREG(st.st_mode)) {
707 blksz = SECTORSZ;
708 volsz = st.st_size;
709 } else if (S_ISBLK(st.st_mode)) {
710 if (ioctl(dvdfd, BLKSSZGET, &blksz))
711 bail_syserr(errno, "failed to get block size for `%s'", device);
712 if (ioctl(dvdfd, BLKGETSIZE64, &volsz))
713 bail_syserr(errno, "failed to get volume size for `%s'", device);
714 } else
715 bail("can't use `%s' as source: expected file or block device", device);
716
717 if (blksz != SECTORSZ)
718 bail("device `%s' block size %d /= %d", device, blksz, SECTORSZ);
719 if (volsz%SECTORSZ)
720 bail("device `%s' volume size %"PRIu64" not a multiple of %d",
721 device, volsz, SECTORSZ);
722
723 if (outfile) {
724 outfd = open(outfile, O_WRONLY | O_CREAT, 0666);
725 if (outfd < 0)
726 bail_syserr(errno, "failed to create output file `%s'", outfile);
727 }
728
729 if (f&f_continue) {
730 if (!outfile) bail("can't continue without output file");
731 off = lseek(outfd, 0, SEEK_END);
732 if (off < 0)
733 bail_syserr(errno, "failed to seek to end of output file `%s'",
734 outfile);
735 put_event(EV_WRITE, 0, off/SECTORSZ);
736 } else if (!eventq.n && !(f&f_fixup))
737 put_event(EV_WRITE, 0, 0);
738
739 #ifdef notdef
740 dvd = DVDOpen2(0, &logger, device);
741 #else
742 dvd = DVDOpen(device);
743 #endif
744 if (!dvd) bail("failed to open DVD on `%s'", device);
745
746 /* It's fast enough just to check everything. */
747 put_menu(dvd, 0);
748 for (i = 1; i < 100; i++) {
749 put_menu(dvd, i);
750 put_title(dvd, i);
751 }
752 put_file(mkident(RAW, 0, 0), 0, volsz/SECTORSZ);
753 assert(filetab.n <= MAXFILES);
754
755 for (i = 0, limit = 0; i < filetab.n; i++)
756 if (filetab.v[i].end > limit) limit = filetab.v[i].end;
757
758 if (end > limit) end = limit;
759
760 #ifdef DEBUG
761 printf("\n;; files:\n");
762 for (i = 0; i < filetab.n; i++) {
763 file = &filetab.v[i];
764 store_filename(fn, file->id);
765 printf(";;\t%8"PRIuSEC" %s\n", file->start, fn);
766 }
767 #endif
768
769 qsort(eventq.v, eventq.n, sizeof(struct event), compare_event);
770
771 f &= ~f_write; start = 0; n = 0;
772 for (i = 0; i < eventq.n; i++) {
773 ev = &eventq.v[i];
774 switch (ev->ev) {
775 case EV_WRITE:
776 if (f&f_write)
777 bail("overlapping ranges: range from %lu still open at %"PRIuSEC"",
778 start, ev->pos);
779 n++; f |= f_write; start = ev->pos;
780 break;
781 case EV_STOP:
782 f &= ~f_write;
783 break;
784 }
785 }
786
787 f &= ~f_write; start = 0;
788 for (i = 0; i < eventq.n; i++) {
789 ev = &eventq.v[i];
790 switch (ev->ev) {
791 case EV_WRITE: start = ev->pos; f |= f_write; break;
792 case EV_STOP: nsectors += ev->pos - start; f &= ~f_write; break;
793 }
794 if (ev->pos >= limit) break;
795 if (f&f_fixup) start = ev->pos;
796 }
797 eventq.n = i;
798 if (f&f_fixup) {
799 put_event(EV_WRITE, 0, start);
800 n++; f |= f_write;
801 }
802 if (f&f_write) {
803 nsectors += limit - start;
804 put_event(EV_STOP, 0, limit);
805 }
806 if (n == 1 && (f&f_write)) flags |= F_ALLPROGRESS;
807 f &= ~f_write;
808
809 #ifdef DEBUG
810 printf("\n;; event sweep:\n");
811 #endif
812 for (pos = 0, i = 0; i < eventq.n; i++) {
813 ev = &eventq.v[i];
814 if (ev->pos > pos) {
815 if (f&f_write) emit(pos, ev->pos);
816 pos = ev->pos;
817 #ifdef DEBUG
818 clear_progress();
819 printf(";;\n");
820 #endif
821 }
822 switch (ev->ev) {
823 case EV_BEGIN:
824 set_live(ev->file);
825 #ifdef DEBUG
826 store_filename(fn, filetab.v[ev->file].id);
827 clear_progress();
828 printf(";; %8"PRIuSEC": begin `%s'\n", pos, fn);
829 #endif
830 break;
831 case EV_WRITE:
832 gettimeofday(&last_time, 0); last_pos = pos;
833 if (outfd >= 0 &&
834 lseek(outfd, (off_t)ev->pos*SECTORSZ, SEEK_SET) < 0)
835 bail_syserr(errno,
836 "failed to seek to resume position "
837 "(sector %"PRIuSEC") in output file `%s'",
838 ev->pos, outfile);
839 #ifdef DEBUG
840 clear_progress();
841 printf(";; %8"PRIuSEC": begin write\n", pos);
842 #endif
843 f |= f_write;
844 break;
845 case EV_STOP:
846 f &= ~f_write;
847 #ifdef DEBUG
848 clear_progress();
849 printf(";; %8"PRIuSEC": end write\n", pos);
850 #endif
851 break;
852 case EV_END:
853 clear_live(ev->file);
854 #ifdef DEBUG
855 store_filename(fn, filetab.v[ev->file].id);
856 clear_progress();
857 printf(";; %8"PRIuSEC": end `%s'\n", pos, fn);
858 #endif
859 break;
860 default: abort();
861 }
862 }
863
864 if (progresslen) putchar('\n');
865
866 if (outfd >= 0 && ftruncate(outfd, (off_t)limit*SECTORSZ) < 0)
867 bail_syserr(errno, "failed to set output file `%s' length", outfile);
868
869 if (dvd) DVDClose(dvd);
870 if (dvdfd >= 0) close(dvdfd);
871 if (outfd >= 0) close(outfd);
872 if (mapfp) {
873 if (ferror(mapfp) || fclose(mapfp))
874 bail_syserr(errno, "error writing bad-sector map file");
875 }
876
877 #undef f_bogus
878 #undef f_continue
879 #undef f_fixup
880 #undef f_write
881
882 return (status);
883 }
Symbiosisware hack for copying DVDs.