util/cbfstool/rmodtool.c

   1 /*
   2  * cbfstool, CLI utility for creating rmodules
   3  *
   4  * Copyright (C) 2014 Google, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc.
  18  */
  19
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <unistd.h>
  24 #include <getopt.h>
  25 #include "common.h"
  26 #include "rmodule.h"
  27
  28 static const char *optstring  = "i:o:vh?";
  29 static struct option long_options[] = {
  30         {"inelf",        required_argument, 0, 'i' },
  31         {"outelf",       required_argument, 0, 'o' },
  32         {"verbose",      no_argument,       0, 'v' },
  33         {"help",         no_argument,       0, 'h' },
  34         {NULL,           0,                 0,  0  }
  35 };
  36
  37 static void usage(char *name)
  38 {
  39         printf(
  40                 "rmodtool: utility for creating rmodules\n\n"
  41                 "USAGE: %s [-h] [-v] <-i|--inelf name> <-o|--outelf name>\n",
  42                 name
  43         );
  44 }
  45
  46 int main(int argc, char *argv[])
  47 {
  48         int c;
  49         struct buffer elfin;
  50         struct buffer elfout;
  51         const char *input_file = NULL;
  52         const char *output_file = NULL;
  53
  54         if (argc < 3) {
  55                 usage(argv[0]);
  56                 return 1;
  57         }
  58
  59         while (1) {
  60                 int optindex = 0;
  61
  62                 c = getopt_long(argc, argv, optstring, long_options, &optindex);
  63
  64                 if (c == -1)
  65                         break;
  66
  67                 switch (c) {
  68                 case 'i':
  69                         input_file = optarg;
  70                         break;
  71                 case 'h':
  72                         usage(argv[0]);
  73                         return 1;
  74                 case 'o':
  75                         output_file = optarg;
  76                         break;
  77                 case 'v':
  78                         verbose++;
  79                         break;
  80                 default:
  81                         break;
  82                 }
  83         }
  84
  85         if (input_file == NULL || output_file == NULL) {
  86                 usage(argv[0]);
  87                 return 1;
  88         }
  89
  90         if (buffer_from_file(&elfin, input_file)) {
  91                 ERROR("Couldn't read in file '%s'.\n", input_file);
  92                 return 1;
  93         }
  94
  95         if (rmodule_create(&elfin, &elfout)) {
  96                 ERROR("Unable to create rmodule from '%s'.\n", input_file);
  97                 return 1;
  98         }
  99
 100         if (buffer_write_file(&elfout, output_file)) {
 101                 ERROR("Unable to write rmodule elf '%s'.\n", output_file);
 102                 return 1;
 103         }
 104
 105         return 0;
 106 }