- if (best && pos + want > best->start) want = best->start - pos;
-
-again:
- if (vob)
- n = DVDReadBlocks(vob, pos - file->start, want, buf);
- else if (file) {
- if (lseek(dvdfd, (off_t)pos*SECTORSZ, SEEK_SET) < 0)
- bail_syserr(errno, "failed to seek to sector %"PRIuSEC"", pos);
- n = read(dvdfd, buf, want*SECTORSZ);
- if (n >= 0) n /= SECTORSZ;
- } else {
- memset(buf, 0, want*SECTORSZ);
- n = want;
- }
+ if (best && pos + want > best->start)
+ { want = best->start - pos; fakeerr = EIO; }
+
+ done = 0;
+ while (want) {
+ if (vob)
+ { errno = 0; n = DVDReadBlocks(vob, pos - file->start, want, p); }
+ else if (file) {
+ if (lseek(dvdfd, (off_t)pos*SECTORSZ, SEEK_SET) < 0)
+ bail_syserr(errno, "failed to seek to sector %"PRIuSEC"", pos);
+ errno = 0; n = read(dvdfd, p, want*SECTORSZ);
+ if (n >= 0) n /= SECTORSZ;
+ } else {
+ memset(p, 0, want*SECTORSZ);
+ n = want;
+ }