| 1 | #include <stdio.h> |
| 2 | |
| 3 | char *from = "/dev/rrp0c"; |
| 4 | char *to = "/dev/rrp1c"; |
| 5 | char *buf; |
| 6 | int bsize = 19*22; |
| 7 | int start = 0; |
| 8 | int count = 815; |
| 9 | |
| 10 | main(argc, argv) |
| 11 | int argc; |
| 12 | char **argv; |
| 13 | { |
| 14 | |
| 15 | argc--, argv++; |
| 16 | if (argc > 0) |
| 17 | start = atoi(*argv++), argc--; |
| 18 | if (argc > 0) |
| 19 | bsize = atoi(*argv++), argc--; |
| 20 | if (argc > 0) |
| 21 | count = atoi(*argv++), argc--; |
| 22 | fprintf(stderr, "from %s to %s, %d groups of %d blocks offset %d\n", |
| 23 | from, to, count, bsize, start); |
| 24 | close(0); |
| 25 | if (open(from, 0) != 0) |
| 26 | perror(from), exit(1); |
| 27 | close(1); |
| 28 | if (open(to, 1) != 1) |
| 29 | perror(to), exit(1); |
| 30 | start *= 512; |
| 31 | bsize *= 512; |
| 32 | buf = (char *)sbrk(bsize); |
| 33 | while (count > 0) { |
| 34 | if (lseek(0, start, 0) < 0) |
| 35 | perror("seek 0"), exit(1); |
| 36 | if (lseek(1, start, 0) < 0) |
| 37 | perror("seek 1"), exit(1); |
| 38 | if (count % 25 == 0) |
| 39 | fprintf(stderr, "%d\n", count); |
| 40 | if (read(0, buf, bsize) != bsize) { |
| 41 | fprintf(stderr, "read block %d: ", start / 512); |
| 42 | perror("read 0"); |
| 43 | } else if (write(1, buf, bsize) != bsize) { |
| 44 | fprintf(stderr, "write block %d: ", start / 512); |
| 45 | perror("write 1"); |
| 46 | } |
| 47 | start += bsize; |
| 48 | count--; |
| 49 | } |
| 50 | fprintf(stderr, "DONE!\n"); |
| 51 | } |