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annotate mpffs/common.c @ 29:e96d6862cec0

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mpffs-rdutils code started
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sun, 30 Jun 2013 05:16:23 +0000
parents
children 9c3c5a572b57
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rev   line source
29
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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1 /*
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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2 * This module contains the code that will be common between mpffs-cat,
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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3 * mpffs-ls and mpffs-xtr.
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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4 */
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5
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6 #include <sys/types.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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7 #include <sys/file.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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8 #include <sys/stat.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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9 #include <endian.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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10 #include <ctype.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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11 #include <stdio.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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12 #include <string.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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13 #include <strings.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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14 #include <stdlib.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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15 #include <unistd.h>
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16 #include "types.h"
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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17 #include "struct.h"
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18
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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19 u8 mpffs_header[6] = {'F', 'f', 's', '#', 0x10, 0x02};
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20
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21 char *imgfile;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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22 u32 eraseblk_size;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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23 int total_blocks;
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24 u32 total_ffs_size;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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25 u8 *image, *indexblk;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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26 int index_blk_num, root_node_no;
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27 int verbose;
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28
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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29 /*
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30 * The following function is used to verify that the specified or computed
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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31 * flash erase block size is a power of 2.
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32 */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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33 count_ones(word)
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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34 u32 word;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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35 {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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36 int count;
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37
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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38 for (count = 0; word; word >>= 1)
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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39 count += word & 1;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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40 return count;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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41 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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42
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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43 eraseblk_size_reasonable()
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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44 {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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45 if (count_ones(eraseblk_size) != 1 || eraseblk_size < 16384) {
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46 fprintf(stderr, "0x%lx is an unreasonable erase block size\n",
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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47 (u_long) eraseblk_size);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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48 exit(1);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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49 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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50 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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51
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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52 read_img_file()
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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53 {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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54 int fd;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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55 struct stat st;
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56
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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57 fd = open(imgfile, O_RDONLY);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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58 if (fd < 0) {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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59 perror(imgfile);
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60 exit(1);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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61 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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62 fstat(fd, &st);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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63 if (!S_ISREG(st.st_mode)) {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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64 fprintf(stderr, "%s is not a regular file\n", imgfile);
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65 exit(1);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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66 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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67 if (!eraseblk_size && !total_blocks) {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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68 switch (st.st_size) {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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69 case 0x70000:
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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70 /* assume Closedmoko */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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71 eraseblk_size = 0x10000;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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72 total_blocks = 7;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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73 break;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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74 case 0x480000:
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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75 /* assume Pirelli */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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76 eraseblk_size = 0x40000;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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77 total_blocks = 18;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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78 break;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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79 default:
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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80 noauto: fprintf(stderr,
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81 "cannot intuit the flash parameters of %s: use -e and -n options\n",
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82 imgfile);
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83 exit(1);
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84 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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85 } else if (!total_blocks) {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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86 total_blocks = st.st_size / eraseblk_size;
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87 if (!total_blocks || total_blocks * eraseblk_size != st.st_size)
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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88 goto noauto;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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89 } else if (!eraseblk_size) {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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90 if (total_blocks * 0x10000 == st.st_size)
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91 eraseblk_size = 0x10000;
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92 else if (total_blocks * 0x40000 == st.st_size)
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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93 eraseblk_size = 0x40000;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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94 else
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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95 goto noauto;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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96 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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97 total_ffs_size = eraseblk_size * total_blocks;
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98 if (st.st_size < total_ffs_size) {
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99 fprintf(stderr, "%s has fewer than 0x%x bytes\n", imgfile,
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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100 total_ffs_size);
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101 exit(1);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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102 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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103 image = malloc(total_ffs_size);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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104 if (!image) {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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105 perror("malloc");
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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106 exit(1);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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107 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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108 read(fd, image, total_ffs_size);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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109 close(fd);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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110 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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111
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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112 find_index_block()
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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113 {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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114 int i, abcnt;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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115 u8 *ptr;
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116
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117 if (index_blk_num) {
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118 if (index_blk_num < 0 || index_blk_num >= total_blocks) {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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119 fprintf(stderr,
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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120 "invalid block # given with the -a option\n");
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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121 exit(1);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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122 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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123 ptr = image + index_blk_num * eraseblk_size;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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124 if (bcmp(ptr, mpffs_header, 6) || ptr[8] != 0xAB) {
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125 fprintf(stderr,
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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126 "no MPFFS index found at the specified block #%d\n",
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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127 index_blk_num);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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128 exit(1);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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129 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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130 indexblk = ptr;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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131 return(0);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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132 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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133 abcnt = 0;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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134 for (ptr = image, i = 0; i < total_blocks; i++, ptr += eraseblk_size) {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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135 if (bcmp(ptr, mpffs_header, 6)) {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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136 fprintf(stderr,
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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137 "warning: no MPFFS signature in erase block #%d (offset %x)\n",
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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138 i, ptr - image);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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139 continue;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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140 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
141 switch (ptr[8]) {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
142 case 0xAB:
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
143 if (verbose)
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
144 printf(
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
145 "Found AB index in erase block #%d (offset %x)\n",
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
146 i, ptr - image);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
147 index_blk_num = i;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
148 indexblk = ptr;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
149 abcnt++;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
150 continue;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
151 case 0xBD:
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
152 case 0xBF:
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
153 continue;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
154 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
155 fprintf(stderr,
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
156 "warning: non-understood block type %02X at offset %x\n",
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
157 ptr[8], ptr - image);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
158 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
159 if (!indexblk) {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
160 fprintf(stderr, "could not find an MPFFS index block in %s\n",
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
161 imgfile);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
162 exit(1);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
163 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
164 if (abcnt > 1) {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
165 fprintf(stderr, "found more than one AB block; use -a\n");
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
166 exit(1);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
167 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
168 return(0);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
169 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
170
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
171 get_index_entry(oi)
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
172 struct objinfo *oi;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
173 {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
174 struct mpffs_index *le;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
175
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
176 if (oi->entryno >= (eraseblk_size >> 4)) {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
177 fprintf(stderr,
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
178 "error: index block pointer %x past the erase block size!\n",
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
179 oi->entryno);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
180 exit(1);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
181 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
182 le = (struct mpffs_index *) indexblk + oi->entryno;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
183 oi->idxrec = le;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
184 oi->len = le16toh(le->len);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
185 oi->type = le->type;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
186 oi->descend = le16toh(le->descend);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
187 oi->sibling = le16toh(le->sibling);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
188 return(0);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
189 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
190
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
191 validate_chunk(oi)
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
192 struct objinfo *oi;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
193 {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
194 u32 dptr;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
195
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
196 if (oi->len & 0xF || !oi->len) {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
197 fprintf(stderr, "index entry #%x: invalid chunk length\n",
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
198 oi->entryno);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
199 exit(1);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
200 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
201 dptr = le32toh(oi->idxrec->dataptr);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
202 if (dptr > 0x0FFFFFFF) {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
203 invdptr: fprintf(stderr, "index entry #%x: invalid data pointer\n",
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
204 oi->entryno);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
205 exit(1);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
206 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
207 dptr <<= 4;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
208 if (dptr >= total_img_size - oi->len)
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
209 goto invdptr;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
210 oi->offset = dptr;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
211 oi->dataptr = image + dptr;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
212 return(0);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
213 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
214
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
215 validate_obj_name(oi)
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
216 struct objinfo *oi;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
217 {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
218 u8 *cp;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
219 int cnt;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
220
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
221 for (cp = oi->dataptr, cnt = 0; ; cp++, cnt++) {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
222 if (cnt >= oi->len) {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
223 fprintf(stderr,
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
224 "object at index %x: name expected at %x: length overrun\n",
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
225 oi->entryno, oi->offset);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
226 exit(1);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
227 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
228 if (!*cp)
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
229 break;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
230 if (*cp < '!' || *cp > '~') {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
231 fprintf(stderr,
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
232 "object at index %x: name expected at %x: bad character\n",
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
233 oi->entryno, oi->offset);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
234 exit(1);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
235 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
236 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
237 if (!cnt) {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
238 fprintf(stderr,
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
239 "object at index %x: name expected at %x: null string\n",
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
240 oi->entryno, oi->offset);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
241 exit(1);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
242 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
243 return(0);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
244 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
245
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
246 u8 *
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
247 find_end_of_chunk(ch)
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
248 struct objinfo *ch;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
249 {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
250 u8 *p;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
251 int i;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
252
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
253 p = ch->dataptr + ch->len;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
254 for (i = 1; i <= 16; i++) {
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
255 if (!p[-i])
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
256 return(p - i);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
257 if (p[-1] != 0xFF)
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
258 break;
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
259 }
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
260 fprintf(stderr,
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
261 "chunk starting at %x (index entry %x): no valid termination found\n",
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
262 ch->offset, ch->entryno);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
263 exit(1);
e96d6862cec0 mpffs-rdutils code started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
264 }