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28a4943263391a01e45906dde7b30157b68e4782
[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;
419 size_t lo, mid, hi;
420 struct badblock *bad, *best;
421
422 best = 0; lo = 0; hi = badblocks.n;
423 #ifdef DEBUG
424 clear_progress();
425 printf(";; searching badblocks for %"PRIuSEC" .. %"PRIuSEC"\n",
426 pos, pos + want);
427 #endif
428 while (lo < hi) {
429 mid = lo + (hi - lo)/2; bad = &badblocks.v[mid];
430 #ifdef DEBUG
431 printf(";; try %zu (%"PRIuSEC" .. %"PRIuSEC")... ",
432 mid, bad->start, bad->end);
433 #endif
434 if (pos < bad->start) { D( printf("high\n"); ) best = bad; hi = mid; }
435 else if (pos >= bad->end) { D( printf("low\n"); ) lo = mid + 1; }
436 else { D( printf("match!\n"); ) errno = EIO; return (-1); }
437 }
438 #ifdef DEBUG
439 if (best)
440 printf(";; next is %"PRIuSEC" .. %"PRIuSEC"\n",
441 best->start, best->end);
442 #endif
443 if (best && pos + want > best->start) want = best->start - pos;
444
445 again:
446 if (vob)
447 n = DVDReadBlocks(vob, pos - file->start, want, buf);
448 else if (file) {
449 if (lseek(dvdfd, (off_t)pos*SECTORSZ, SEEK_SET) < 0)
450 bail_syserr(errno, "failed to seek to sector %"PRIuSEC"", pos);
451 n = read(dvdfd, buf, want*SECTORSZ);
452 if (n >= 0) n /= SECTORSZ;
453 } else {
454 memset(buf, 0, want*SECTORSZ);
455 n = want;
456 }
457
458 if (n < 0 && errno == EINTR) goto again;
459 return (n);
460 }
461
462 static void emit(secaddr start, secaddr end)
463 {
464 #define BUFSECTORS 512
465
466 int least, i;
467 unsigned char buf[BUFSECTORS*SECTORSZ];
468 secaddr pos;
469 secaddr bad_lo, bad_hi, good, step;
470 size_t want;
471 ssize_t n;
472 static int first_time = 1;
473 #ifdef DEBUG
474 struct file *f;
475 char fn[MAXFNSZ];
476 int act = -1;
477 #endif
478
479 least = least_live();
480
481 #ifdef DEBUG
482 printf(";; %8"PRIuSEC" .. %"PRIuSEC"\n", start, end);
483
484 for (i = 0; i < filetab.n; i++) {
485 if (!livep(i)) continue;
486 if (act == -1) act = i;
487 f = &filetab.v[i]; store_filename(fn, f->id);
488 printf(";;\t\t%8"PRIuSEC" .. %-8"PRIuSEC" %s\n",
489 start - f->start, end - f->start, fn);
490 }
491 if (act == -1) printf(";;\t\t#<no live source>\n");
492 assert(act == least);
493 #endif
494
495 if (least == -1)
496 { file = 0; vob = 0; }
497 else {
498 file = &filetab.v[least];
499 switch (id_kind(file->id)) {
500 case RAW:
501 vob = 0;
502 break;
503 case VOB:
504 if (first_time) { clear_progress(); first_time = 0; }
505 vob = DVDOpenFile(dvd, id_title(file->id),
506 id_part(file->id)
507 ? DVD_READ_TITLE_VOBS
508 : DVD_READ_MENU_VOBS);
509 if (!vob)
510 bail("failed to open %s %u",
511 id_part(file->id) ? "title" : "menu",
512 id_title(file->id));
513 break;
514 default:
515 abort();
516 }
517 }
518
519 pos = start;
520 while (pos < end) {
521 want = end - pos; if (want > BUFSECTORS) want = BUFSECTORS;
522 n = read_sectors(pos, buf, want);
523
524 if (n <= 0) {
525 report_bad_blocks_progress(pos, pos, errno);
526 for (i = 0; i < 4; i++) {
527 n = read_sectors(pos, buf, 1);
528 if (n > 0) {
529 clear_progress();
530 moan("sector %"PRIuSEC" read ok after retry", pos);
531 bad_lo = bad_hi = pos;
532 goto recovered;
533 }
534 }
535
536 bad_lo = pos; step = 1; bad_hi = pos + 1;
537 for (;;) {
538 report_bad_blocks_progress(bad_lo, bad_hi, errno);
539 if (bad_hi >= end) {
540 clear_progress();
541 moan("giving up on this extent");
542 n = 0; goto recovered;
543 }
544 step *= 2;
545 if (step > end - bad_lo) step = end - bad_lo;
546 pos = bad_lo + step - 1;
547 n = read_sectors(pos, buf, 1);
548 if (n > 0) break;
549 bad_hi = pos + 1;
550 }
551
552 good = pos;
553 while (good > bad_hi) {
554 report_bad_blocks_progress(bad_lo, bad_hi, errno);
555 pos = bad_hi + (good - bad_hi)/2;
556 n = read_sectors(pos, buf, 1);
557 if (n > 0) good = pos;
558 else bad_hi = pos + 1;
559 }
560 recovered:
561 if (bad_hi > bad_lo) {
562 clear_progress();
563 moan("skipping %"PRIuSEC" bad sectors (%"PRIuSEC" .. %"PRIuSEC")",
564 bad_hi - bad_lo, bad_lo, bad_hi);
565 if (mapfile) {
566 if (!mapfp) {
567 mapfp = fopen(mapfile, "w");
568 if (!mapfp)
569 bail_syserr(errno, "failed to open bad-sector map file `%s'",
570 optarg);
571 fprintf(mapfp, "## bad sector map\n\n");
572 }
573 fprintf(mapfp, "%"PRIuSEC" %"PRIuSEC"\n", bad_lo, bad_hi);
574 fflush(mapfp);
575 if (ferror(mapfp))
576 bail_syserr(errno, "error writing bad-sector map file");
577 }
578 if (lseek(outfd, (off_t)(bad_hi - bad_lo)*SECTORSZ, SEEK_CUR) < 0)
579 bail_syserr(errno, "failed to seek past bad sectors");
580 status = 1;
581 }
582 pos = bad_hi;
583 }
584
585 if (n > 0) { carefully_write(outfd, buf, n*SECTORSZ); pos += n; }
586 report_progress(pos); fflush(stdout);
587 }
588
589 if (vob) { DVDCloseFile(vob); vob = 0; }
590
591 #undef BUFSECTORS
592 }
593
594 #ifdef notdef
595 static void logfn(void *p, dvd_logger_level_t lev,
596 const char *fmt, va_list ap)
597 {
598 switch (lev) {
599 case DVD_LOGGER_LEVEL_ERROR:
600 fprintf("%s (libdvdread error): ", prog);
601 break;
602 case DVD_LOGGER_LEVEL_WARN:
603 fprintf("%s (libdvdread warning): ", prog);
604 break;
605 default:
606 return;
607 }
608 vfprintf(stderr, fmt, ap);
609 fputc('\n', stderr);
610 }
611 static const dvd_logger_cb logger = { logfn };
612 #endif
613
614 struct buf {
615 char *p;
616 size_t n, sz;
617 };
618 #define BUF_INIT { 0, 0, 0 }
619 #define BUF_REWIND(b) do { (b)->n = 0; } while (0)
620 #define BUF_FREE(b) do { \
621 buf *_b = (b); \
622 free(_b->p); _b->p = 0; _b->n = _b->sz = 0; \
623 } while (0)
624 #define BUF_PUTC(b, ch) do { \
625 struct buf *_b = (b); \
626 if (_b->n >= _b->sz) { \
627 _b->sz = _b->sz ? 2*_b->sz : 32; \
628 _b->p = realloc(_b->p, _b->sz); \
629 if (!_b->p) bail("out of memory allocating %zu bytes", _b->sz); \
630 } \
631 _b->p[_b->n] = (ch); \
632 } while (0)
633
634 static int read_line(FILE *fp, struct buf *b)
635 {
636 int ch;
637
638 ch = getc(fp);
639 if (ch == EOF)
640 return (-1);
641 else if (ch != '\n') do {
642 BUF_PUTC(b, ch); b->n++;
643 ch = getc(fp);
644 } while (ch != EOF && ch != '\n');
645 BUF_PUTC(b, 0);
646 return (0);
647 }
648
649 #define PRF_HYPHEN 1u
650 static int parse_range(const char *p, unsigned f,
651 secaddr *start_out, secaddr *end_out)
652 {
653 char *q;
654 int err, rc;
655 unsigned long start, end;
656
657 err = errno;
658
659 if (ISDIGIT(*p)) {
660 start = strtoul(p, &q, 0);
661 if (errno || start >= SECLIMIT) { rc = -1; goto end; }
662 *start_out = start; p = q;
663 } else if (!(f&PRF_HYPHEN))
664 { rc = -1; goto end; }
665 else
666 start = 0;
667
668 if (f&PRF_HYPHEN) {
669 if (*p != '-') { rc = -1; goto end; }
670 p++;
671 } else {
672 if (!ISSPACE(*p)) { rc = -1; goto end; }
673 do p++; while (ISSPACE(*p));
674 }
675
676 if (ISDIGIT(*p)) {
677 end = strtoul(p, &q, 0);
678 if (errno || end > SECLIMIT || end < start) { rc = -1; goto end; }
679 *end_out = end; p = q;
680 } else if (!(f&PRF_HYPHEN))
681 { rc = -1; goto end; }
682
683 if (!(f&PRF_HYPHEN)) while (ISSPACE(*p)) p++;
684 if (*p) { rc = -1; goto end; }
685
686 rc = 0;
687 end:
688 errno = err;
689 return (rc);
690 }
691
692 int main(int argc, char *argv[])
693 {
694 unsigned f = 0;
695 char *p;
696 uint64_t volsz;
697 secaddr pos;
698 off_t off;
699 secaddr start, end, last;
700 const struct event *ev;
701 const char *device, *outfile;
702 struct badblock *bad;
703 int opt, blksz;
704 unsigned n;
705 size_t i;
706 FILE *fp;
707 struct buf buf = BUF_INIT;
708 struct stat st;
709 #ifdef DEBUG
710 const struct file *file;
711 char fn[MAXFNSZ];
712 #endif
713
714 #define f_bogus 1u
715 #define f_continue 2u
716 #define f_fixup 4u
717 #define f_write 256u
718
719 p = strrchr(argv[0], '/'); prog = p ? p + 1 : argv[0];
720 for (;;) {
721 opt = getopt(argc, argv, "hFR:X:b:cr:"); if (opt < 0) break;
722 switch (opt) {
723 case 'h': usage(stderr); exit(0);
724 case 'F': f |= f_fixup; break;
725 case 'R':
726 fp = fopen(optarg, "r");
727 if (!fp)
728 bail_syserr(errno, "failed to open ranges file `%s'", optarg);
729 i = 0; last = -1;
730 for (;;) {
731 BUF_REWIND(&buf); if (read_line(fp, &buf)) break;
732 p = buf.p; i++;
733 while (ISSPACE(*p)) p++;
734 if (!*p || *p == '#') continue;
735 if (parse_range(p, 0, &start, &end) ||
736 (last <= SECLIMIT && start < last))
737 bail("bad range `%s' at `%s' line %zu", buf.p, optarg, i);
738 if (start < end) {
739 if (start == last)
740 eventq.v[eventq.n - 1].pos = end;
741 else {
742 put_event(EV_WRITE, 0, start);
743 put_event(EV_STOP, 0, end);
744 }
745 last = end;
746 }
747 }
748 if (ferror(fp))
749 bail_syserr(errno, "failed to read ranges file `%s'", optarg);
750 break;
751 case 'X':
752 fp = fopen(optarg, "r");
753 if (!fp)
754 bail_syserr(errno, "failed to open bad-blocks file `%s'", optarg);
755 i = 0; last = -1;
756 for (;;) {
757 BUF_REWIND(&buf); if (read_line(fp, &buf)) break;
758 p = buf.p; i++;
759 while (ISSPACE(*p)) p++;
760 if (!*p || *p == '#') continue;
761 if (parse_range(p, 0, &start, &end) ||
762 (last <= SECLIMIT && start < last))
763 bail("bad range `%s' at `%s' line %zu", buf.p, optarg, i);
764 if (start < end)
765 { VEC_PUSH(bad, &badblocks); bad->start = start; bad->end = end; }
766 }
767 if (ferror(fp))
768 bail_syserr(errno, "failed to read bad-blocks file `%s'", optarg);
769 break;
770 case 'b':
771 if (mapfile) bail("can't have multiple map files");
772 mapfile = optarg;
773 break;
774 case 'c': f |= f_continue; break;
775 case 'r':
776 start = 0; end = -1;
777 if (parse_range(optarg, PRF_HYPHEN, &start, &end))
778 bail("bad range `%s'", optarg);
779 if (start < end) {
780 put_event(EV_WRITE, 0, start);
781 if (end <= SECLIMIT) put_event(EV_STOP, 0, end);
782 }
783 break;
784 default: f |= f_bogus; break;
785 }
786 }
787 if (argc - optind != 2) f |= f_bogus;
788 if (f&f_bogus) { usage(stderr); exit(2); }
789
790 device = argv[optind]; outfile = argv[optind + 1];
791
792 if (badblocks.n) {
793 qsort(badblocks.v, badblocks.n, sizeof(struct badblock),
794 compare_badblock);
795 #ifdef DEBUG
796 printf(";; fake bad blocks:\n");
797 for (i = 0; i < badblocks.n; i++)
798 printf(";;\t%8"PRIuSEC" .. %"PRIuSEC"\n",
799 badblocks.v[i].start, badblocks.v[i].end);
800 #endif
801 }
802
803 dvdfd = open(device, O_RDONLY);
804 if (dvdfd < 0)
805 bail_syserr(errno, "failed to open device `%s'", device);
806 if (fstat(dvdfd, &st))
807 bail_syserr(errno, "failed to stat device `%s'", device);
808 if (S_ISREG(st.st_mode)) {
809 blksz = SECTORSZ;
810 volsz = st.st_size;
811 } else if (S_ISBLK(st.st_mode)) {
812 if (ioctl(dvdfd, BLKSSZGET, &blksz))
813 bail_syserr(errno, "failed to get block size for `%s'", device);
814 if (ioctl(dvdfd, BLKGETSIZE64, &volsz))
815 bail_syserr(errno, "failed to get volume size for `%s'", device);
816 } else
817 bail("can't use `%s' as source: expected file or block device", device);
818
819 if (blksz != SECTORSZ)
820 bail("device `%s' block size %d /= %d", device, blksz, SECTORSZ);
821 if (volsz%SECTORSZ)
822 bail("device `%s' volume size %"PRIu64" not a multiple of %d",
823 device, volsz, SECTORSZ);
824
825 if (outfile) {
826 outfd = open(outfile, O_WRONLY | O_CREAT, 0666);
827 if (outfd < 0)
828 bail_syserr(errno, "failed to create output file `%s'", outfile);
829 }
830
831 if (f&f_continue) {
832 off = lseek(outfd, 0, SEEK_END);
833 if (off < 0)
834 bail_syserr(errno, "failed to seek to end of output file `%s'",
835 outfile);
836 put_event(EV_WRITE, 0, off/SECTORSZ);
837 } else if (!eventq.n && !(f&f_fixup))
838 put_event(EV_WRITE, 0, 0);
839
840 #ifdef notdef
841 dvd = DVDOpen2(0, &logger, device);
842 #else
843 dvd = DVDOpen(device);
844 #endif
845 if (!dvd) bail("failed to open DVD on `%s'", device);
846
847 /* It's fast enough just to check everything. */
848 put_menu(dvd, 0);
849 for (i = 1; i < 100; i++) {
850 put_menu(dvd, i);
851 put_title(dvd, i);
852 }
853 put_file(mkident(RAW, 0, 0), 0, volsz/SECTORSZ);
854 assert(filetab.n <= MAXFILES);
855
856 for (i = 0, limit = 0; i < filetab.n; i++)
857 if (filetab.v[i].end > limit) limit = filetab.v[i].end;
858
859 if (end > limit) end = limit;
860
861 #ifdef DEBUG
862 printf("\n;; files:\n");
863 for (i = 0; i < filetab.n; i++) {
864 file = &filetab.v[i];
865 store_filename(fn, file->id);
866 printf(";;\t%8"PRIuSEC" %s\n", file->start, fn);
867 }
868 #endif
869
870 qsort(eventq.v, eventq.n, sizeof(struct event), compare_event);
871
872 f &= ~f_write; start = 0; n = 0;
873 for (i = 0; i < eventq.n; i++) {
874 ev = &eventq.v[i];
875 switch (ev->ev) {
876 case EV_WRITE:
877 if (f&f_write)
878 bail("overlapping ranges: range from %"PRIuSEC" still open at %"PRIuSEC"",
879 start, ev->pos);
880 n++; f |= f_write; start = ev->pos;
881 break;
882 case EV_STOP:
883 f &= ~f_write;
884 break;
885 }
886 }
887
888 f &= ~f_write; start = 0;
889 for (i = 0; i < eventq.n; i++) {
890 ev = &eventq.v[i];
891 switch (ev->ev) {
892 case EV_WRITE: start = ev->pos; f |= f_write; break;
893 case EV_STOP: nsectors += ev->pos - start; f &= ~f_write; break;
894 }
895 if (ev->pos >= limit) break;
896 if (f&f_fixup) start = ev->pos;
897 }
898 eventq.n = i;
899 if (f&f_fixup) {
900 put_event(EV_WRITE, 0, start);
901 n++; f |= f_write;
902 }
903 if (f&f_write) {
904 nsectors += limit - start;
905 put_event(EV_STOP, 0, limit);
906 }
907 if (n == 1 && (f&f_write)) flags |= F_ALLPROGRESS;
908 f &= ~f_write;
909
910 #ifdef DEBUG
911 printf("\n;; event sweep:\n");
912 #endif
913 for (pos = 0, i = 0; i < eventq.n; i++) {
914 ev = &eventq.v[i];
915 if (ev->pos > pos) {
916 if (f&f_write) emit(pos, ev->pos);
917 pos = ev->pos;
918 #ifdef DEBUG
919 clear_progress();
920 printf(";;\n");
921 #endif
922 }
923 switch (ev->ev) {
924 case EV_BEGIN:
925 set_live(ev->file);
926 #ifdef DEBUG
927 store_filename(fn, filetab.v[ev->file].id);
928 clear_progress();
929 printf(";; %8"PRIuSEC": begin `%s'\n", pos, fn);
930 #endif
931 break;
932 case EV_WRITE:
933 gettimeofday(&last_time, 0); last_pos = pos;
934 if (lseek(outfd, (off_t)ev->pos*SECTORSZ, SEEK_SET) < 0)
935 bail_syserr(errno,
936 "failed to seek to resume position "
937 "(sector %"PRIuSEC") in output file `%s'",
938 ev->pos, outfile);
939 #ifdef DEBUG
940 clear_progress();
941 printf(";; %8"PRIuSEC": begin write\n", pos);
942 #endif
943 f |= f_write;
944 break;
945 case EV_STOP:
946 f &= ~f_write;
947 #ifdef DEBUG
948 clear_progress();
949 printf(";; %8"PRIuSEC": end write\n", pos);
950 #endif
951 break;
952 case EV_END:
953 clear_live(ev->file);
954 #ifdef DEBUG
955 store_filename(fn, filetab.v[ev->file].id);
956 clear_progress();
957 printf(";; %8"PRIuSEC": end `%s'\n", pos, fn);
958 #endif
959 break;
960 default: abort();
961 }
962 }
963
964 if (progresslen) putchar('\n');
965
966 if (ftruncate(outfd, (off_t)limit*SECTORSZ) < 0)
967 bail_syserr(errno, "failed to set output file `%s' length", outfile);
968
969 if (dvd) DVDClose(dvd);
970 if (dvdfd >= 0) close(dvdfd);
971 if (outfd >= 0) close(outfd);
972 if (mapfp) {
973 if (ferror(mapfp) || fclose(mapfp))
974 bail_syserr(errno, "error writing bad-sector map file");
975 }
976
977 #undef f_bogus
978 #undef f_continue
979 #undef f_fixup
980 #undef f_write
981
982 return (status);
983 }
Symbiosisware hack for copying DVDs.