FreeCalypso > hg > freecalypso-tools

annotate ffstools/tiffs-rd/basics.c @ 364:ac311a48630e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fcup-smdump & fcup-smsend: send AT+CMEE=2 first
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 08 Mar 2018 00:20:42 +0000
parents e7502631a0f9
children
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0
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
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1 /*
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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2 * This C module implements the "basics" of TIFFS image analysis.
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Mychaela Falconia <falcon@freecalypso.org>
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3 */
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Mychaela Falconia <falcon@freecalypso.org>
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4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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5 #include <sys/types.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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6 #include <sys/file.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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7 #include <sys/stat.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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8 #include <sys/mman.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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9 #include <stdio.h>
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Mychaela Falconia <falcon@freecalypso.org>
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10 #include <stdlib.h>
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Mychaela Falconia <falcon@freecalypso.org>
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11 #include <unistd.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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12 #include <string.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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13 #include <strings.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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14 #include "types.h"
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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15 #include "struct.h"
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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16 #include "globals.h"
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Mychaela Falconia <falcon@freecalypso.org>
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17
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Mychaela Falconia <falcon@freecalypso.org>
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18 u8 tiffs_header[6] = {'F', 'f', 's', '#', 0x10, 0x02};
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Mychaela Falconia <falcon@freecalypso.org>
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19
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Mychaela Falconia <falcon@freecalypso.org>
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20 read_ffs_image()
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Mychaela Falconia <falcon@freecalypso.org>
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21 {
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Mychaela Falconia <falcon@freecalypso.org>
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22 int fd;
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Mychaela Falconia <falcon@freecalypso.org>
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23 struct stat st;
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Mychaela Falconia <falcon@freecalypso.org>
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24
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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25 fd = open(imgfile, O_RDONLY);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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26 if (fd < 0) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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27 perror(imgfile);
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Mychaela Falconia <falcon@freecalypso.org>
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28 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
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29 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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30 fstat(fd, &st);
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Mychaela Falconia <falcon@freecalypso.org>
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31 if (!S_ISREG(st.st_mode)) {
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Mychaela Falconia <falcon@freecalypso.org>
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32 fprintf(stderr, "error: %s is not a regular file\n", imgfile);
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Mychaela Falconia <falcon@freecalypso.org>
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33 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
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34 }
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Mychaela Falconia <falcon@freecalypso.org>
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35 if (st.st_size < imgfile_offset) {
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Mychaela Falconia <falcon@freecalypso.org>
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36 fprintf(stderr,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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37 "error: offset given with -o exceeds the size of the file\n");
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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38 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
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39 }
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Mychaela Falconia <falcon@freecalypso.org>
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40 if (st.st_size - imgfile_offset < total_ffs_size) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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41 fprintf(stderr,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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42 "error: %s is shorter than FFS size of 0x%lx bytes\n",
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Mychaela Falconia <falcon@freecalypso.org>
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43 imgfile, (u_long)total_ffs_size);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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44 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
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45 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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46 image = mmap(NULL, total_ffs_size, PROT_READ, MAP_PRIVATE, fd,
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Mychaela Falconia <falcon@freecalypso.org>
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47 imgfile_offset);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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48 if (image == MAP_FAILED) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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49 perror("mmap");
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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50 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
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51 }
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Mychaela Falconia <falcon@freecalypso.org>
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52 close(fd);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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53 }
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Mychaela Falconia <falcon@freecalypso.org>
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54
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Mychaela Falconia <falcon@freecalypso.org>
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55 cmd_blkhdr()
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56 {
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Mychaela Falconia <falcon@freecalypso.org>
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57 int blk;
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Mychaela Falconia <falcon@freecalypso.org>
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58 u8 *blkhdr;
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59
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parents:
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60 read_ffs_image();
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Mychaela Falconia <falcon@freecalypso.org>
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61 for (blk = 0; blk < total_blocks; blk++) {
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Mychaela Falconia <falcon@freecalypso.org>
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62 printf("Block %3d: ", blk);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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63 blkhdr = image + blk * eraseblk_size;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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64 if (bcmp(blkhdr, tiffs_header, sizeof tiffs_header)) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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65 printf("No TIFFS header\n");
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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66 continue;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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67 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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68 printf("age %02X%02X, type/status %02X\n",
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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69 blkhdr[7], blkhdr[6], blkhdr[8]);
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70 }
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Mychaela Falconia <falcon@freecalypso.org>
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71 exit(0);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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72 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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73
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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74 find_inode_block()
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Mychaela Falconia <falcon@freecalypso.org>
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75 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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76 int i, abcnt;
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Mychaela Falconia <falcon@freecalypso.org>
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77 u8 *ptr;
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Mychaela Falconia <falcon@freecalypso.org>
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78
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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79 if (index_blk_num >= 0) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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80 if (index_blk_num >= total_blocks) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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81 fprintf(stderr,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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82 "invalid block # given with the -a option\n");
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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83 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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84 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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85 ptr = image + index_blk_num * eraseblk_size;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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86 if (bcmp(ptr, tiffs_header, sizeof tiffs_header)) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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87 fprintf(stderr,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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88 "error: block specified with -a has no TIFFS header\n");
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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89 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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90 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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91 if (ptr[8] != 0xAB) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 fprintf(stderr,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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93 "error: block specified with -a is not an AB block\n");
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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94 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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95 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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96 inode_block = ptr;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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97 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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98 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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99 abcnt = 0;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100 for (ptr = image, i = 0; i < total_blocks; i++, ptr += eraseblk_size) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 if (bcmp(ptr, tiffs_header, sizeof tiffs_header)) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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102 fprintf(stderr,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 "warning: no TIFFS signature in erase block #%d (offset %x)\n",
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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104 i, ptr - image);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 continue;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 switch (ptr[8]) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 case 0xAB:
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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109 if (verbose)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 fprintf(stderr,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 "Found AB index in erase block #%d (offset %x)\n",
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112 i, ptr - image);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113 index_blk_num = i;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114 inode_block = ptr;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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115 abcnt++;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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116 continue;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 case 0xBD:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 case 0xBF:
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 continue;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 fprintf(stderr,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 "warning: unexpected block type/status %02X at offset %x\n",
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 ptr[8], ptr - image);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 if (!inode_block) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 fprintf(stderr,
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 "error: could not find an active inode block in %s\n",
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 imgfile);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 if (abcnt > 1) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 fprintf(stderr,
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 "error: found more than one AB block; use -a\n");
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 return(0);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 cmd_fsinfo()
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 read_ffs_image();
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 find_inode_block();
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 printf("Active inode block (AB) is block #%d\n", index_blk_num);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 alloc_inode_table();
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 find_root_inode();
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 printf("Root inode is #%x\n", root_inode);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 if (validate_obj_name(root_inode, 1)) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 printf("Root inode (format) name: %s\n",
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 inode_info[root_inode]->dataptr);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 exit(0);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 } else {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 printf("No valid name found in the root inode!\n");
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 exit(1);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 }