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annotate ffstools/tiffs-rd/main.c @ 229:24ed817dd25d

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tiffs IVA: reads image via mmap and displays block headers
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sat, 25 Jan 2014 23:56:47 +0000
parents c04aa85559ed
children ffaa033e7643
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1 /*
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2 * This C module contains the main() function for the tiffs utility,
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3 * dispatching control to different operation commands.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <ctype.h>
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8 #include <stdio.h>
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9 #include <stdlib.h>
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10 #include <string.h>
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11 #include <strings.h>
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12 #include "types.h"
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13
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14 char *imgfile;
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15 u32 eraseblk_size;
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16 int total_blocks;
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17 u32 total_ffs_size;
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18 int index_blk_num = -1, root_node_no;
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19 int verbose;
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20
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21 parse_org_arg(arg)
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22 char *arg;
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23 {
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24 char *cp;
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25
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26 cp = index(arg, 'x');
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27 if (!cp || !isdigit(cp[1]) || !isdigit(arg[0])) {
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28 fprintf(stderr,
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29 "error: TIFFS organization argument \"%s\" is invalid\n", arg);
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30 exit(1);
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31 }
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32 *cp++ = '\0';
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33 if (!strcmp(arg, "8"))
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34 eraseblk_size = 0x2000;
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35 else if (!strcmp(arg, "16"))
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36 eraseblk_size = 0x4000;
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37 else if (!strcmp(arg, "32"))
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38 eraseblk_size = 0x8000;
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39 else if (!strcmp(arg, "64"))
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40 eraseblk_size = 0x10000;
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41 else if (!strcmp(arg, "128"))
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42 eraseblk_size = 0x20000;
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43 else if (!strcmp(arg, "256"))
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44 eraseblk_size = 0x40000;
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45 else {
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46 fprintf(stderr,
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47 "error: \"%s\" is not a recognized flash sector size\n",
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48 arg);
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49 exit(1);
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50 }
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51 total_blocks = atoi(cp);
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52 if (total_blocks < 1 || total_blocks > 128) {
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53 fprintf(stderr,
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54 "error: \"%s\" is not a reasonable number of FFS sectors\n",
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55 cp);
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56 exit(1);
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57 }
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58 total_ffs_size = eraseblk_size * total_blocks;
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59 }
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60
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61 extern int cmd_blkhdr();
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62
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63 static struct cmdtab {
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64 char *cmd;
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65 int (*func)();
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66 } cmdtab[] = {
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67 {"blkhdr", cmd_blkhdr},
225
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68 {"cat", NULL},
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69 {"fsck", NULL},
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70 {"ls", NULL},
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71 {"xtr", NULL},
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72 {NULL, NULL}
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73 };
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74
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75 main(argc, argv)
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76 char **argv;
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77 {
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78 extern int optind;
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79 extern char *optarg;
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80 int c;
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81 char *cmd;
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82 struct cmdtab *tp;
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83
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84 while ((c = getopt(argc, argv, "+a:r:v")) != EOF)
225
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85 switch (c) {
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86 case 'a':
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87 index_blk_num = atoi(optarg);
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88 continue;
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89 case 'r':
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90 root_node_no = atoi(optarg);
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91 continue;
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92 case 'v':
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93 verbose++;
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94 continue;
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95 default:
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96 usage: fprintf(stderr,
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97 "usage: %s [global-options] <imgfile> <org> <op> ...\n",
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98 argv[0]);
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99 exit(1);
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100 }
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101 if (argc - optind < 3)
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102 goto usage;
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103 imgfile = argv[optind];
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104 parse_org_arg(argv[optind+1]);
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105 cmd = argv[optind+2];
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106
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107 for (tp = cmdtab; tp->cmd; tp++)
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108 if (!strcmp(tp->cmd, cmd))
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109 break;
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110 if (!tp->func) {
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111 fprintf(stderr,
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112 "%s: operation \"%s\" is unknown or unimplemented\n",
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113 argv[0], cmd);
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114 exit(1);
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115 }
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116 optind += 2;
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117 return tp->func(argc - optind, argv + optind);
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118 }