tools/imagetool.c

   1 /*
   2  * (C) Copyright 2013
   3  *
   4  * Written by Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include "imagetool.h"
  10
  11 #include <image.h>
  12
  13 struct image_type_params *imagetool_get_type(int type)
  14 {
  15         struct image_type_params *curr;
  16         struct image_type_params *start = ll_entry_start(
  17                         struct image_type_params, image_type);
  18         struct image_type_params *end = ll_entry_end(
  19                         struct image_type_params, image_type);
  20
  21         for (curr = start; curr != end; curr++) {
  22                 if (curr->check_image_type) {
  23                         if (!curr->check_image_type(type))
  24                                 return curr;
  25                 }
  26         }
  27         return NULL;
  28 }
  29
  30 int imagetool_verify_print_header(
  31         void *ptr,
  32         struct stat *sbuf,
  33         struct image_type_params *tparams,
  34         struct image_tool_params *params)
  35 {
  36         int retval = -1;
  37         struct image_type_params *curr;
  38
  39         struct image_type_params *start = ll_entry_start(
  40                         struct image_type_params, image_type);
  41         struct image_type_params *end = ll_entry_end(
  42                         struct image_type_params, image_type);
  43
  44         for (curr = start; curr != end; curr++) {
  45                 if (curr->verify_header) {
  46                         retval = curr->verify_header((unsigned char *)ptr,
  47                                                      sbuf->st_size, params);
  48
  49                         if (retval == 0) {
  50                                 /*
  51                                  * Print the image information  if verify is
  52                                  * successful
  53                                  */
  54                                 if (curr->print_header) {
  55                                         curr->print_header(ptr);
  56                                 } else {
  57                                         fprintf(stderr,
  58                                                 "%s: print_header undefined for %s\n",
  59                                                 params->cmdname, curr->name);
  60                                 }
  61                                 break;
  62                         }
  63                 }
  64         }
  65
  66         return retval;
  67 }
  68
  69 int imagetool_save_subimage(
  70         const char *file_name,
  71         ulong file_data,
  72         ulong file_len)
  73 {
  74         int dfd;
  75
  76         dfd = open(file_name, O_RDWR | O_CREAT | O_TRUNC | O_BINARY,
  77                    S_IRUSR | S_IWUSR);
  78         if (dfd < 0) {
  79                 fprintf(stderr, "Can't open \"%s\": %s\n",
  80                         file_name, strerror(errno));
  81                 return -1;
  82         }
  83
  84         if (write(dfd, (void *)file_data, file_len) != (ssize_t)file_len) {
  85                 fprintf(stderr, "Write error on \"%s\": %s\n",
  86                         file_name, strerror(errno));
  87                 close(dfd);
  88                 return -1;
  89         }
  90
  91         close(dfd);
  92
  93         return 0;
  94 }