FreeCalypso > hg > freecalypso-reveng
annotate pirollback/catino.c @ 136:81fc8da9a29c
tiobjd: disasm hints work now
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Mon, 07 Apr 2014 04:56:29 +0000 |
parents | 18fa570685de |
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rev | line source |
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1 #include <stdio.h> |
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2 #include <stdlib.h> |
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3 #include <string.h> |
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4 #include <strings.h> |
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5 #include "types.h" |
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6 #include "struct.h" |
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7 |
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8 extern char *imgfile; |
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9 extern struct inode_info inode[]; |
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10 extern int last_inode; |
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11 extern int journal_start_ino; |
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12 |
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13 u8 * |
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14 find_end_of_chunk(ino) |
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15 { |
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16 struct inode_info *ch = inode + ino; |
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17 u8 *p; |
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18 int i; |
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19 |
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20 p = ch->dataptr + ch->len; |
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21 for (i = 1; i <= 16; i++) { |
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22 if (!p[-i]) |
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23 return(p - i); |
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24 if (p[-1] != 0xFF) |
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25 break; |
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26 } |
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27 fprintf(stderr, |
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28 "chunk starting at %x (inode #%x): no valid termination found\n", |
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29 ch->offset, ino); |
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30 exit(1); |
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31 } |
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32 |
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33 dump_cont_chain(start) |
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34 { |
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35 int ino; |
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36 struct inode_info *inf; |
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37 u8 *endp; |
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38 |
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39 for (ino = start; ino; ino = inf->descend) { |
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40 inf = inode + ino; |
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41 if (inf->type != 0xF4) { |
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42 fprintf(stderr, |
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43 "continuation chunk #%x does not have type F4\n", |
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44 ino); |
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45 exit(1); |
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46 } |
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47 endp = find_end_of_chunk(ino); |
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48 write(1, inf->dataptr, endp - inf->dataptr); |
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49 } |
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50 } |
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51 |
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52 do_cat(ino) |
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53 { |
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54 struct inode_info *inf = inode + ino; |
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55 u8 *endp; |
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56 |
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57 if (inf->type != 0xF1) { |
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58 fprintf(stderr, "error: requested inode is not a file\n"); |
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59 exit(1); |
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60 } |
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61 endp = find_end_of_chunk(ino); |
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62 if (endp > inf->byte_after_name) |
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63 write(1, inf->byte_after_name, endp - inf->byte_after_name); |
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64 dump_cont_chain(inf->descend); |
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65 } |
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66 |
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67 main(argc, argv) |
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68 char **argv; |
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69 { |
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70 int ino; |
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71 char *strtoul_endp; |
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72 |
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73 if (argc != 3) { |
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74 usage: fprintf(stderr, "usage: %s ffs-image inode\n", argv[0]); |
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75 exit(1); |
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76 } |
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77 imgfile = argv[1]; |
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78 ino = strtoul(argv[2], &strtoul_endp, 16); |
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79 if (!argv[2][0] || *strtoul_endp) |
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80 goto usage; |
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81 read_img_file(); |
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82 read_inodes(); |
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83 walk_tree(); |
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84 check_object_names(); |
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85 parse_journal(); |
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86 check_object_names(); /* rerun for "undeleted" objects */ |
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87 if (ino < 1 || ino > last_inode) { |
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88 fprintf(stderr, "%s: bad inode number specified\n", argv[0]); |
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89 exit(1); |
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90 } |
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91 do_cat(ino); |
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92 exit(0); |
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93 } |