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[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 #ifdef DEBUG
36 # define D(x) x
37 #else
38 # define D(x)
39 #endif
40
41 #define N(v) (sizeof(v)/sizeof((v)[0]))
42
43 #define SECTORSZ 2048
44 #define SECTORS(n) (((n) + (SECTORSZ - 1))/SECTORSZ)
45
46 static const char *prog = "<unset>";
47 static int status = 0;
48
49 static void usage(FILE *fp)
50 {
51 fprintf(fp,
52 "usage: %s [-c] [-R MAP] [-b OUTMAP] [-r [START]-[END]]\n"
53 "\tDEVICE OUTFILE\n",
54 prog);
55 }
56
57 static void vmoan(const char *fmt, va_list ap)
58 { fprintf(stderr, "%s: ", prog); vfprintf(stderr, fmt, ap); }
59
60 __attribute__((format(printf, 1, 2)))
61 static void moan(const char *fmt, ...)
62 {
63 va_list ap;
64
65 va_start(ap, fmt); vmoan(fmt, ap); va_end(ap);
66 fputc('\n', stderr);
67 }
68
69 __attribute__((noreturn, format(printf, 1, 2)))
70 static void bail(const char *fmt, ...)
71 {
72 va_list ap;
73
74 va_start(ap, fmt); vmoan(fmt, ap); va_end(ap);
75 fputc('\n', stderr);
76 exit(2);
77 }
78
79 __attribute__((noreturn, format(printf, 2, 3)))
80 static void bail_syserr(int err, const char *fmt, ...)
81 {
82 va_list ap;
83
84 va_start(ap, fmt); vmoan(fmt, ap); va_end(ap);
85 if (err) fprintf(stderr, ": %s", strerror(errno));
86 fputc('\n', stderr);
87 exit(2);
88 }
89
90 static void carefully_write(int fd, const void *buf, size_t sz)
91 {
92 const unsigned char *p = buf;
93 ssize_t n;
94
95 if (fd < 0) return;
96 while (sz) {
97 n = write(fd, p, sz);
98 if (n < 0) {
99 if (errno == EINTR) continue;
100 bail_syserr(errno, "failed to write to output file");
101 }
102 if (!n) bail("unexpected short write to output file");
103 p += n; sz -= n;
104 }
105 }
106
107 #define DEFVEC(vtype, etype) \
108 typedef struct { etype *v; size_t n, sz; } vtype
109 #define VEC_INIT { 0, 0, 0 }
110 #define VEC_FREE(vv) do { \
111 free((vv)->v); (vv)->v 0; (vv)->n = (vv)->sz = 0; \
112 } while (0)
113 #define VEC_PUSH(p, vv) do { \
114 size_t _want; \
115 if ((vv)->n >= (vv)->sz) { \
116 (vv)->sz = (vv)->sz ? 2*(vv)->sz : 32; \
117 _want = (vv)->sz*sizeof(*(vv)->v); \
118 (vv)->v = realloc((vv)->v, _want); \
119 if (!(vv)->v) bail("out of memory allocating %zu bytes", _want); \
120 } \
121 (p) = &(vv)->v[(vv)->n++]; \
122 } while (0)
123
124 enum { RAW, IFO, VOB, BUP };
125 typedef uint_least32_t ident;
126
127 static inline ident mkident(unsigned kind, unsigned title, unsigned part)
128 { return (((ident)kind << 0) | ((ident)title << 8) | ((ident)part << 16)); }
129 static inline unsigned id_kind(ident id) { return ((id >> 0)&0x0ff); }
130 static inline unsigned id_title(ident id) { return ((id >> 8)&0x0ff); }
131 static inline unsigned id_part(ident id) { return ((id >> 16)&0x0ff); }
132
133 #define MAXFNSZ (1 + 8 + 1 + 12 + 1)
134
135 static void store_filename(char *buf, ident id)
136 {
137 switch (id_kind(id)) {
138 case RAW:
139 sprintf(buf, "#<raw device>");
140 break;
141 case IFO:
142 if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.IFO");
143 else sprintf(buf, "/VIDEO_TS/VTS_%02u_0.IFO", id_title(id));
144 break;
145 case BUP:
146 if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.BUP");
147 else sprintf(buf, "/VIDEO_TS/VTS_%02u_0.BUP", id_title(id));
148 break;
149 case VOB:
150 if (!id_title(id)) sprintf(buf, "/VIDEO_TS/VIDEO_TS.VOB");
151 else
152 sprintf(buf, "/VIDEO_TS/VTS_%02u_%u.VOB", id_title(id), id_part(id));
153 break;
154 default:
155 abort();
156 }
157 }
158
159 typedef uint_least32_t secaddr;
160 #define PRIuSEC PRIuLEAST32
161 #define SECLIMIT 0x00400000
162
163 #define MAXFILES (1 + 2*99 + 1)
164 struct file {
165 ident id;
166 secaddr start, end;
167 };
168 DEFVEC(file_v, struct file);
169 static file_v filetab = VEC_INIT;
170
171 enum { EV_STOP, EV_BEGIN, EV_END, EV_WRITE };
172 struct event {
173 unsigned char ev, file;
174 secaddr pos;
175 };
176 DEFVEC(event_v, struct event);
177 static event_v eventq = VEC_INIT;
178
179 static int compare_event(const void *a, const void *b)
180 {
181 const struct event *eva = a, *evb = b;
182
183 if (eva->pos < evb->pos) return (-1);
184 else if (eva->pos > evb->pos) return (+1);
185
186 if (eva->ev < evb->ev) return (-1);
187 else if (eva->ev > evb->ev) return (+1);
188
189 if (eva->file < evb->file) return (-1);
190 else if (eva->file > evb->file) return (+1);
191
192 return (0);
193 }
194
195 typedef uint_least32_t bits;
196 static bits live[(MAXFILES + 31)/32];
197
198 static inline int livep(unsigned i)
199 { return (live[i/32]&((bits)1 << (i%32))); }
200 static inline void set_live(unsigned i)
201 { live[i/32] |= (bits)1 << (i%32); }
202 static inline void clear_live(unsigned i)
203 { live[i/32] &= ~((bits)1 << (i%32)); }
204 static inline int least_live(void)
205 {
206 unsigned i, n = (filetab.n + 32)/32;
207 bits b;
208
209 for (i = 0; i < n; i++) { b = live[i]; if (b) goto found; }
210 return (-1);
211 found:
212 i *= 32;
213 if (!(b&0x0000ffff)) { b >>= 16; i += 16; }
214 if (!(b&0x000000ff)) { b >>= 8; i += 8; }
215 if (!(b&0x0000000f)) { b >>= 4; i += 4; }
216 if (!(b&0x00000003)) { b >>= 2; i += 2; }
217 if (!(b&0x00000001)) { b >>= 1; i += 1; }
218 assert(b&1);
219 return (i);
220 }
221
222 static void put_event(unsigned evtype, unsigned file, secaddr pos)
223 {
224 struct event *ev;
225
226 VEC_PUSH(ev, &eventq);
227 ev->ev = evtype; ev->file = file; ev->pos = pos;
228 }
229
230 static void put_file(ident id, secaddr start, secaddr end)
231 {
232 struct file *f;
233 size_t i;
234
235 VEC_PUSH(f, &filetab); i = f - filetab.v;
236 f->id = id; f->start = start; f->end = end;
237 put_event(EV_BEGIN, i, start);
238 put_event(EV_END, i, end);
239 }
240
241 static void put_menu(dvd_reader_t *dvd, unsigned title)
242 {
243 ident id = mkident(VOB, title, 0);
244 char fn[MAXFNSZ];
245 secaddr start, len;
246
247 store_filename(fn, id);
248 start = UDFFindFile(dvd, fn, &len); if (!start) return;
249 #ifdef DEBUG
250 printf(";; %8"PRIuSEC" .. %-8"PRIuSEC": %s\n",
251 start, start + SECTORS(len), fn);
252 #endif
253 put_file(id, start, start + SECTORS(len));
254 }
255
256 static void put_title(dvd_reader_t *dvd, unsigned title)
257 {
258 char fn[MAXFNSZ];
259 secaddr start[9], len[9];
260 unsigned i, npart;
261
262 for (i = 0; i < 9; i++) {
263 store_filename(fn, mkident(VOB, title, i + 1));
264 start[i] = UDFFindFile(dvd, fn, &len[i]); if (!start[i]) break;
265 }
266 npart = i; if (!npart) return;
267
268 #ifdef DEBUG
269 for (i = 0; i < npart; i++) {
270 store_filename(fn, mkident(VOB, title, i + 1));
271 printf(";; %8"PRIuSEC" .. %-8"PRIuSEC": %s\n",
272 start[i], start[i] + SECTORS(len[i]), fn);
273 }
274 #endif
275
276 if (npart > 1)
277 for (i = 0; i < npart - 1; i++) {
278 if (len[i]%SECTORSZ)
279 bail("title %u part %u length = %"PRIuSEC" not a multiple of %d",
280 title, i, len[i], SECTORSZ);
281 if (start[i] + len[i]/SECTORSZ != start[i + 1])
282 bail
283 ("title %u part %u end = %"PRIuSEC" /= part %u start = %"PRIuSEC"",
284 title, i, start[i] + len[i]/SECTORSZ, i + 1, start[i + 1]);
285 }
286
287 put_file(mkident(VOB, title, 1),
288 start[0], start[npart - 1] + SECTORS(len[npart - 1]));
289 }
290
291 static int progresslen = 0;
292
293 static void clear_progress_internal(void)
294 {
295 while (progresslen) { fputs("\b \b", stdout); progresslen--; }
296 putchar('\r');
297 }
298 static void clear_progress(void)
299 { clear_progress_internal(); fflush(stdout); }
300 static void vappend_progress(const char *fmt, va_list ap)
301 { progresslen += vprintf(fmt, ap); }
302 __attribute__((format(printf, 1, 2)))
303 static void append_progress(const char *fmt, ...)
304 {
305 va_list ap;
306
307 va_start(ap, fmt);
308 vappend_progress(fmt, ap);
309 va_end(ap);
310 }
311 __attribute__((format(printf, 1, 2)))
312 static void print_progress(const char *fmt, ...)
313 {
314 va_list ap;
315
316 va_start(ap, fmt);
317 clear_progress_internal();
318 vappend_progress(fmt, ap);
319 va_end(ap);
320 }
321
322 unsigned flags;
323 # define F_ALLPROGRESS 1u
324 static secaddr last_pos, limit, nsectors, ndone;
325 static struct timeval last_time;
326 static double wsum, wcount;
327 static struct file *file;
328
329 static void report_progress(secaddr pos)
330 {
331 char etastr[32];
332 struct timeval now;
333 int eta;
334 double percent, t, f, g, rate;
335 char *unit;
336
337 #define ALPHA 0.02
338 #define BETA (1 - ALPHA)
339
340 gettimeofday(&now, 0);
341 t = (now.tv_sec - last_time.tv_sec) +
342 (now.tv_usec - last_time.tv_usec)/1000000.0;
343
344 if (t) {
345 g = wcount ? pow(BETA, t) : 0.0; f = (1 - g)/(1 - BETA);
346 wsum = f*(pos - last_pos)/t + g*wsum;
347 wcount = f + g*wcount;
348 ndone += pos - last_pos;
349 last_time = now; last_pos = pos;
350 }
351
352 if (!wsum || !wcount)
353 { rate = 0; strcpy(etastr, "???"); }
354 else {
355 rate = wsum/wcount;
356 eta = (int)((nsectors - ndone)/rate);
357 sprintf(etastr, "%d:%02d:%02d", eta/3600, (eta/60)%60, eta%60);
358 }
359
360 rate *= SECTORSZ; unit = "";
361 if (rate > 128) { rate /= 1024; unit = "k"; }
362 if (rate > 128) { rate /= 1024; unit = "M"; }
363 if (rate > 128) { rate /= 1024; unit = "G"; }
364
365 if (flags&F_ALLPROGRESS) percent = pos*100.0/limit;
366 else percent = ndone*100.0/nsectors;
367 print_progress
368 ("copied %.1f%% (%"PRIuSEC" of %"PRIuSEC"; %.1f %sB/s, ETA %s)",
369 percent, pos, limit, rate, unit, etastr);
370 if (file && id_kind(file->id) == VOB) {
371 append_progress(" -- %s %d %3.1f%%",
372 id_part(file->id) ? "title" : "menu",
373 id_title(file->id),
374 (pos - file->start)*100.0/
375 (file->end - file->start));
376 }
377
378 #undef ALPHA
379 #undef BETA
380 }
381
382 static void report_bad_blocks_progress(secaddr lo, secaddr hi, int err)
383 {
384 report_progress(hi);
385
386 if (lo == hi) append_progress(": retrying bad sector");
387 else
388 append_progress(": %"PRIuSEC" bad %s",
389 hi - lo, hi == lo + 1 ? "sector" : "sectors");
390 if (err != EIO) append_progress(" (%s)", strerror(err));
391 fflush(stdout);
392 }
393
394 static dvd_reader_t *dvd;
395 static int dvdfd = -1, outfd = -1;
396 static dvd_file_t *vob;
397 static const char *mapfile; static FILE *mapfp;
398
399 struct badblock { secaddr start, end; };
400 DEFVEC(badblock_v, struct badblock);
401 static badblock_v badblocks = VEC_INIT;
402
403 static int compare_badblock(const void *a, const void *b)
404 {
405 const struct badblock *ba = a, *bb = b;
406
407 if (ba->start < bb->start) return (-1);
408 else if (ba->start > bb->start) return (+1);
409
410 if (ba->end < bb->end) return (-1);
411 else if (ba->end > bb->end) return (+1);
412
413 return (0);
414 }
415
416 static ssize_t read_sectors(secaddr pos, void *buf, secaddr want)
417 {
418 ssize_t n, done;
419 size_t lo, mid, hi;
420 int fakeerr = 0;
421 struct badblock *bad, *best;
422 unsigned char *p = buf;
423
424 best = 0; lo = 0; hi = badblocks.n;
425 #ifdef DEBUG
426 clear_progress();
427 printf(";; searching badblocks for %"PRIuSEC" .. %"PRIuSEC"\n",
428 pos, pos + want);
429 #endif
430 while (lo < hi) {
431 mid = lo + (hi - lo)/2; bad = &badblocks.v[mid];
432 #ifdef DEBUG
433 printf(";; try %zu (%"PRIuSEC" .. %"PRIuSEC")... ",
434 mid, bad->start, bad->end);
435 #endif
436 if (pos < bad->start) { D( printf("high\n"); ) best = bad; hi = mid; }
437 else if (pos >= bad->end) { D( printf("low\n"); ) lo = mid + 1; }
438 else { D( printf("match!\n"); ) errno = EIO; return (-1); }
439 }
440 #ifdef DEBUG
441 if (best)
442 printf(";; next is %"PRIuSEC" .. %"PRIuSEC"\n",
443 best->start, best->end);
444 #endif
445 if (best && pos + want > best->start)
446 { want = best->start - pos; fakeerr = EIO; }
447
448 done = 0;
449 while (want) {
450 if (vob)
451 { errno = 0; n = DVDReadBlocks(vob, pos - file->start, want, p); }
452 else if (file) {
453 if (lseek(dvdfd, (off_t)pos*SECTORSZ, SEEK_SET) < 0)
454 bail_syserr(errno, "failed to seek to sector %"PRIuSEC"", pos);
455 errno = 0; n = read(dvdfd, p, want*SECTORSZ);
456 if (n >= 0) n /= SECTORSZ;
457 } else {
458 memset(p, 0, want*SECTORSZ);
459 n = want;
460 }
461
462 if (n > 0) { done += n; pos += n; p += n*SECTORSZ; want -= n; }
463 else if (!n || errno != EINTR) break;
464 }
465 if (fakeerr && !errno) errno = fakeerr;
466 return (!done && errno ? -1 : done);
467 }
468
469 static ssize_t find_good_sector(secaddr *pos_inout, secaddr end,
470 unsigned char *buf, secaddr sz)
471 {
472 int i;
473 secaddr pos = *pos_inout, bad_lo, bad_hi, good, step;
474 ssize_t n;
475
476 report_bad_blocks_progress(pos, pos, errno);
477 for (i = 0; i < 4; i++) {
478 n = read_sectors(pos, buf, 1);
479 if (n > 0) {
480 clear_progress();
481 moan("sector %"PRIuSEC" read ok after retry", pos);
482 bad_lo = bad_hi = pos;
483 goto recovered;
484 }
485 }
486
487 bad_lo = pos; step = 1; bad_hi = pos + 1;
488 for (;;) {
489 report_bad_blocks_progress(bad_lo, bad_hi, errno);
490 if (bad_hi >= end) {
491 clear_progress();
492 moan("giving up on this extent");
493 n = 0; goto recovered;
494 }
495 step *= 2;
496 if (step > end - bad_lo) step = end - bad_lo;
497 pos = bad_lo + step - 1;
498 n = read_sectors(pos, buf, 1);
499 if (n > 0) break;
500 bad_hi = pos + 1;
501 }
502
503 good = pos;
504 while (good > bad_hi) {
505 report_bad_blocks_progress(bad_lo, bad_hi, errno);
506 pos = bad_hi + (good - bad_hi)/2;
507 n = read_sectors(pos, buf, 1);
508 if (n > 0) good = pos;
509 else bad_hi = pos + 1;
510 }
511 recovered:
512 if (bad_hi > bad_lo) {
513 clear_progress();
514 moan("skipping %"PRIuSEC" bad sectors (%"PRIuSEC" .. %"PRIuSEC")",
515 bad_hi - bad_lo, bad_lo, bad_hi);
516 if (mapfile) {
517 if (!mapfp) {
518 mapfp = fopen(mapfile, "w");
519 if (!mapfp)
520 bail_syserr(errno, "failed to open bad-sector map file `%s'",
521 optarg);
522 fprintf(mapfp, "## bad sector map\n\n");
523 }
524 fprintf(mapfp, "%"PRIuSEC" %"PRIuSEC"\n", bad_lo, bad_hi);
525 fflush(mapfp);
526 if (ferror(mapfp))
527 bail_syserr(errno, "error writing bad-sector map file");
528 }
529 if (lseek(outfd, (off_t)(bad_hi - bad_lo)*SECTORSZ, SEEK_CUR) < 0)
530 bail_syserr(errno, "failed to seek past bad sectors");
531 status = 1;
532 }
533 *pos_inout = bad_hi;
534 return (n);
535 }
536
537 static void emit(secaddr start, secaddr end)
538 {
539 #define BUFSECTORS 512
540
541 int least;
542 unsigned char buf[BUFSECTORS*SECTORSZ];
543 secaddr pos;
544 size_t want;
545 ssize_t n;
546 static int first_time = 1;
547 #ifdef DEBUG
548 struct file *f;
549 char fn[MAXFNSZ];
550 int act = -1;
551 int i;
552 #endif
553
554 least = least_live();
555
556 #ifdef DEBUG
557 printf(";; %8"PRIuSEC" .. %"PRIuSEC"\n", start, end);
558
559 for (i = 0; i < filetab.n; i++) {
560 if (!livep(i)) continue;
561 if (act == -1) act = i;
562 f = &filetab.v[i]; store_filename(fn, f->id);
563 printf(";;\t\t%8"PRIuSEC" .. %-8"PRIuSEC" %s\n",
564 start - f->start, end - f->start, fn);
565 }
566 if (act == -1) printf(";;\t\t#<no live source>\n");
567 assert(act == least);
568 #endif
569
570 if (least == -1)
571 { file = 0; vob = 0; }
572 else {
573 file = &filetab.v[least];
574 switch (id_kind(file->id)) {
575 case RAW:
576 vob = 0;
577 break;
578 case VOB:
579 if (first_time) { clear_progress(); first_time = 0; }
580 vob = DVDOpenFile(dvd, id_title(file->id),
581 id_part(file->id)
582 ? DVD_READ_TITLE_VOBS
583 : DVD_READ_MENU_VOBS);
584 if (!vob)
585 bail("failed to open %s %u",
586 id_part(file->id) ? "title" : "menu",
587 id_title(file->id));
588 break;
589 default:
590 abort();
591 }
592 }
593
594 pos = start;
595 while (pos < end) {
596 want = end - pos; if (want > BUFSECTORS) want = BUFSECTORS;
597 n = read_sectors(pos, buf, want);
598
599 if (n <= 0) n = find_good_sector(&pos, end, buf, BUFSECTORS);
600 if (n > 0) { carefully_write(outfd, buf, n*SECTORSZ); pos += n; }
601 report_progress(pos); fflush(stdout);
602 }
603
604 if (vob) { DVDCloseFile(vob); vob = 0; }
605
606 #undef BUFSECTORS
607 }
608
609 #ifdef notdef
610 static void logfn(void *p, dvd_logger_level_t lev,
611 const char *fmt, va_list ap)
612 {
613 switch (lev) {
614 case DVD_LOGGER_LEVEL_ERROR:
615 fprintf("%s (libdvdread error): ", prog);
616 break;
617 case DVD_LOGGER_LEVEL_WARN:
618 fprintf("%s (libdvdread warning): ", prog);
619 break;
620 default:
621 return;
622 }
623 vfprintf(stderr, fmt, ap);
624 fputc('\n', stderr);
625 }
626 static const dvd_logger_cb logger = { logfn };
627 #endif
628
629 struct buf {
630 char *p;
631 size_t n, sz;
632 };
633 #define BUF_INIT { 0, 0, 0 }
634 #define BUF_REWIND(b) do { (b)->n = 0; } while (0)
635 #define BUF_FREE(b) do { \
636 buf *_b = (b); \
637 free(_b->p); _b->p = 0; _b->n = _b->sz = 0; \
638 } while (0)
639 #define BUF_PUTC(b, ch) do { \
640 struct buf *_b = (b); \
641 if (_b->n >= _b->sz) { \
642 _b->sz = _b->sz ? 2*_b->sz : 32; \
643 _b->p = realloc(_b->p, _b->sz); \
644 if (!_b->p) bail("out of memory allocating %zu bytes", _b->sz); \
645 } \
646 _b->p[_b->n] = (ch); \
647 } while (0)
648
649 static int read_line(FILE *fp, struct buf *b)
650 {
651 int ch;
652
653 ch = getc(fp);
654 if (ch == EOF)
655 return (-1);
656 else if (ch != '\n') do {
657 BUF_PUTC(b, ch); b->n++;
658 ch = getc(fp);
659 } while (ch != EOF && ch != '\n');
660 BUF_PUTC(b, 0);
661 return (0);
662 }
663
664 #define PRF_HYPHEN 1u
665 static int parse_range(const char *p, unsigned f,
666 secaddr *start_out, secaddr *end_out)
667 {
668 char *q;
669 int err, rc;
670 unsigned long start, end;
671
672 err = errno;
673
674 if (ISDIGIT(*p)) {
675 start = strtoul(p, &q, 0);
676 if (errno || start >= SECLIMIT) { rc = -1; goto end; }
677 *start_out = start; p = q;
678 } else if (!(f&PRF_HYPHEN))
679 { rc = -1; goto end; }
680 else
681 start = 0;
682
683 if (f&PRF_HYPHEN) {
684 if (*p != '-') { rc = -1; goto end; }
685 p++;
686 } else {
687 if (!ISSPACE(*p)) { rc = -1; goto end; }
688 do p++; while (ISSPACE(*p));
689 }
690
691 if (ISDIGIT(*p)) {
692 end = strtoul(p, &q, 0);
693 if (errno || end > SECLIMIT || end < start) { rc = -1; goto end; }
694 *end_out = end; p = q;
695 } else if (!(f&PRF_HYPHEN))
696 { rc = -1; goto end; }
697
698 if (!(f&PRF_HYPHEN)) while (ISSPACE(*p)) p++;
699 if (*p) { rc = -1; goto end; }
700
701 rc = 0;
702 end:
703 errno = err;
704 return (rc);
705 }
706
707 int main(int argc, char *argv[])
708 {
709 unsigned f = 0;
710 char *p;
711 uint64_t volsz;
712 secaddr pos;
713 off_t off;
714 secaddr start, end, last;
715 const struct event *ev;
716 const char *device, *outfile;
717 struct badblock *bad;
718 int opt, blksz;
719 unsigned n;
720 size_t i;
721 FILE *fp;
722 struct buf buf = BUF_INIT;
723 struct stat st;
724 #ifdef DEBUG
725 const struct file *file;
726 char fn[MAXFNSZ];
727 #endif
728
729 #define f_bogus 1u
730 #define f_continue 2u
731 #define f_fixup 4u
732 #define f_write 256u
733
734 p = strrchr(argv[0], '/'); prog = p ? p + 1 : argv[0];
735 for (;;) {
736 opt = getopt(argc, argv, "hFR:X:b:cr:"); if (opt < 0) break;
737 switch (opt) {
738 case 'h': usage(stderr); exit(0);
739 case 'F': f |= f_fixup; break;
740 case 'R':
741 fp = fopen(optarg, "r");
742 if (!fp)
743 bail_syserr(errno, "failed to open ranges file `%s'", optarg);
744 i = 0; last = -1;
745 for (;;) {
746 BUF_REWIND(&buf); if (read_line(fp, &buf)) break;
747 p = buf.p; i++;
748 while (ISSPACE(*p)) p++;
749 if (!*p || *p == '#') continue;
750 if (parse_range(p, 0, &start, &end) ||
751 (last <= SECLIMIT && start < last))
752 bail("bad range `%s' at `%s' line %zu", buf.p, optarg, i);
753 if (start < end) {
754 if (start == last)
755 eventq.v[eventq.n - 1].pos = end;
756 else {
757 put_event(EV_WRITE, 0, start);
758 put_event(EV_STOP, 0, end);
759 }
760 last = end;
761 }
762 }
763 if (ferror(fp))
764 bail_syserr(errno, "failed to read ranges file `%s'", optarg);
765 break;
766 case 'X':
767 fp = fopen(optarg, "r");
768 if (!fp)
769 bail_syserr(errno, "failed to open bad-blocks file `%s'", optarg);
770 i = 0; last = -1;
771 for (;;) {
772 BUF_REWIND(&buf); if (read_line(fp, &buf)) break;
773 p = buf.p; i++;
774 while (ISSPACE(*p)) p++;
775 if (!*p || *p == '#') continue;
776 if (parse_range(p, 0, &start, &end) ||
777 (last <= SECLIMIT && start < last))
778 bail("bad range `%s' at `%s' line %zu", buf.p, optarg, i);
779 if (start < end)
780 { VEC_PUSH(bad, &badblocks); bad->start = start; bad->end = end; }
781 }
782 if (ferror(fp))
783 bail_syserr(errno, "failed to read bad-blocks file `%s'", optarg);
784 break;
785 case 'b':
786 if (mapfile) bail("can't have multiple map files");
787 mapfile = optarg;
788 break;
789 case 'c': f |= f_continue; break;
790 case 'r':
791 start = 0; end = -1;
792 if (parse_range(optarg, PRF_HYPHEN, &start, &end))
793 bail("bad range `%s'", optarg);
794 if (start < end) {
795 put_event(EV_WRITE, 0, start);
796 if (end <= SECLIMIT) put_event(EV_STOP, 0, end);
797 }
798 break;
799 default: f |= f_bogus; break;
800 }
801 }
802 if (argc - optind != 2) f |= f_bogus;
803 if (f&f_bogus) { usage(stderr); exit(2); }
804
805 device = argv[optind]; outfile = argv[optind + 1];
806
807 if (badblocks.n) {
808 qsort(badblocks.v, badblocks.n, sizeof(struct badblock),
809 compare_badblock);
810 #ifdef DEBUG
811 printf(";; fake bad blocks:\n");
812 for (i = 0; i < badblocks.n; i++)
813 printf(";;\t%8"PRIuSEC" .. %"PRIuSEC"\n",
814 badblocks.v[i].start, badblocks.v[i].end);
815 #endif
816 }
817
818 dvdfd = open(device, O_RDONLY);
819 if (dvdfd < 0)
820 bail_syserr(errno, "failed to open device `%s'", device);
821 if (fstat(dvdfd, &st))
822 bail_syserr(errno, "failed to stat device `%s'", device);
823 if (S_ISREG(st.st_mode)) {
824 blksz = SECTORSZ;
825 volsz = st.st_size;
826 } else if (S_ISBLK(st.st_mode)) {
827 if (ioctl(dvdfd, BLKSSZGET, &blksz))
828 bail_syserr(errno, "failed to get block size for `%s'", device);
829 if (ioctl(dvdfd, BLKGETSIZE64, &volsz))
830 bail_syserr(errno, "failed to get volume size for `%s'", device);
831 } else
832 bail("can't use `%s' as source: expected file or block device", device);
833
834 if (blksz != SECTORSZ)
835 bail("device `%s' block size %d /= %d", device, blksz, SECTORSZ);
836 if (volsz%SECTORSZ)
837 bail("device `%s' volume size %"PRIu64" not a multiple of %d",
838 device, volsz, SECTORSZ);
839
840 if (outfile) {
841 outfd = open(outfile, O_WRONLY | O_CREAT, 0666);
842 if (outfd < 0)
843 bail_syserr(errno, "failed to create output file `%s'", outfile);
844 }
845
846 if (f&f_continue) {
847 off = lseek(outfd, 0, SEEK_END);
848 if (off < 0)
849 bail_syserr(errno, "failed to seek to end of output file `%s'",
850 outfile);
851 put_event(EV_WRITE, 0, off/SECTORSZ);
852 } else if (!eventq.n && !(f&f_fixup))
853 put_event(EV_WRITE, 0, 0);
854
855 #ifdef notdef
856 dvd = DVDOpen2(0, &logger, device);
857 #else
858 dvd = DVDOpen(device);
859 #endif
860 if (!dvd) bail("failed to open DVD on `%s'", device);
861
862 /* It's fast enough just to check everything. */
863 put_menu(dvd, 0);
864 for (i = 1; i < 100; i++) {
865 put_menu(dvd, i);
866 put_title(dvd, i);
867 }
868 put_file(mkident(RAW, 0, 0), 0, volsz/SECTORSZ);
869 assert(filetab.n <= MAXFILES);
870
871 for (i = 0, limit = 0; i < filetab.n; i++)
872 if (filetab.v[i].end > limit) limit = filetab.v[i].end;
873
874 if (end > limit) end = limit;
875
876 #ifdef DEBUG
877 printf("\n;; files:\n");
878 for (i = 0; i < filetab.n; i++) {
879 file = &filetab.v[i];
880 store_filename(fn, file->id);
881 printf(";;\t%8"PRIuSEC" %s\n", file->start, fn);
882 }
883 #endif
884
885 qsort(eventq.v, eventq.n, sizeof(struct event), compare_event);
886
887 f &= ~f_write; start = 0; n = 0;
888 for (i = 0; i < eventq.n; i++) {
889 ev = &eventq.v[i];
890 switch (ev->ev) {
891 case EV_WRITE:
892 if (f&f_write)
893 bail("overlapping ranges: range from %"PRIuSEC" still open at %"PRIuSEC"",
894 start, ev->pos);
895 n++; f |= f_write; start = ev->pos;
896 break;
897 case EV_STOP:
898 f &= ~f_write;
899 break;
900 }
901 }
902
903 f &= ~f_write; start = 0;
904 for (i = 0; i < eventq.n; i++) {
905 ev = &eventq.v[i];
906 switch (ev->ev) {
907 case EV_WRITE: start = ev->pos; f |= f_write; break;
908 case EV_STOP: nsectors += ev->pos - start; f &= ~f_write; break;
909 }
910 if (ev->pos >= limit) break;
911 if (f&f_fixup) start = ev->pos;
912 }
913 eventq.n = i;
914 if (f&f_fixup) {
915 put_event(EV_WRITE, 0, start);
916 n++; f |= f_write;
917 }
918 if (f&f_write) {
919 nsectors += limit - start;
920 put_event(EV_STOP, 0, limit);
921 }
922 if (n == 1 && (f&f_write)) flags |= F_ALLPROGRESS;
923 f &= ~f_write;
924
925 #ifdef DEBUG
926 printf("\n;; event sweep:\n");
927 #endif
928 for (pos = 0, i = 0; i < eventq.n; i++) {
929 ev = &eventq.v[i];
930 if (ev->pos > pos) {
931 if (f&f_write) emit(pos, ev->pos);
932 pos = ev->pos;
933 #ifdef DEBUG
934 clear_progress();
935 printf(";;\n");
936 #endif
937 }
938 switch (ev->ev) {
939 case EV_BEGIN:
940 set_live(ev->file);
941 #ifdef DEBUG
942 store_filename(fn, filetab.v[ev->file].id);
943 clear_progress();
944 printf(";; %8"PRIuSEC": begin `%s'\n", pos, fn);
945 #endif
946 break;
947 case EV_WRITE:
948 gettimeofday(&last_time, 0); last_pos = pos;
949 if (lseek(outfd, (off_t)ev->pos*SECTORSZ, SEEK_SET) < 0)
950 bail_syserr(errno,
951 "failed to seek to resume position "
952 "(sector %"PRIuSEC") in output file `%s'",
953 ev->pos, outfile);
954 #ifdef DEBUG
955 clear_progress();
956 printf(";; %8"PRIuSEC": begin write\n", pos);
957 #endif
958 f |= f_write;
959 break;
960 case EV_STOP:
961 f &= ~f_write;
962 #ifdef DEBUG
963 clear_progress();
964 printf(";; %8"PRIuSEC": end write\n", pos);
965 #endif
966 break;
967 case EV_END:
968 clear_live(ev->file);
969 #ifdef DEBUG
970 store_filename(fn, filetab.v[ev->file].id);
971 clear_progress();
972 printf(";; %8"PRIuSEC": end `%s'\n", pos, fn);
973 #endif
974 break;
975 default: abort();
976 }
977 }
978
979 if (progresslen) putchar('\n');
980
981 if (ftruncate(outfd, (off_t)limit*SECTORSZ) < 0)
982 bail_syserr(errno, "failed to set output file `%s' length", outfile);
983
984 if (dvd) DVDClose(dvd);
985 if (dvdfd >= 0) close(dvdfd);
986 if (outfd >= 0) close(outfd);
987 if (mapfp) {
988 if (ferror(mapfp) || fclose(mapfp))
989 bail_syserr(errno, "error writing bad-sector map file");
990 }
991
992 #undef f_bogus
993 #undef f_continue
994 #undef f_fixup
995 #undef f_write
996
997 return (status);
998 }
Symbiosisware hack for copying DVDs.