tools/printinitialenv.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2022
   4  * Max Krummenacher, Toradex
   5  *
   6  * Snippets taken from tools/env/fw_env.c
   7  *
   8  * This prints the list of default environment variables as currently
   9  * configured.
  10  *
  11  */
  12
  13 #include <stdio.h>
  14
  15 /* Pull in the current config to define the default environment */
  16 #include <linux/kconfig.h>
  17
  18 #ifndef __ASSEMBLY__
  19 #define __ASSEMBLY__ /* get only #defines from config.h */
  20 #include <config.h>
  21 #undef  __ASSEMBLY__
  22 #else
  23 #include <config.h>
  24 #endif
  25
  26 #define DEFAULT_ENV_INSTANCE_STATIC
  27 #include <generated/environment.h>
  28 #include <env_default.h>
  29
  30 int main(void)
  31 {
  32         char *env, *nxt;
  33
  34         for (env = default_environment; *env; env = nxt + 1) {
  35                 for (nxt = env; *nxt; ++nxt) {
  36                         if (nxt >= &default_environment[sizeof(default_environment)]) {
  37                                 fprintf(stderr, "## Error: environment not terminated\n");
  38                                 return -1;
  39                         }
  40                 }
  41                 printf("%s\n", env);
  42         }
  43         return 0;
  44 }