Add console support for restricted commands

This adds support for CONFIG_RESTRICTED_CONSOLE_COMMANDS. If the
appropriate options are configured, restricted commands can be
prevented from running.

Nothing in this CL actually uses that, but it works if you turn
it on.

BUG=chrome-os-partner:55322
BRANCH=none
TEST=make buildall, test on Cr50 hardware

I also tested it manually. If you add this to board.h:

  #define CONFIG_CONSOLE_COMMAND_FLAGS
  #define CONFIG_RESTRICTED_CONSOLE_COMMANDS
  #define CONFIG_CONSOLE_COMMAND_FLAGS_DEFAULT CMD_FLAG_RESTRICTED

and this to board.c:

  static int restricted_state;

  int console_is_restricted(void)
  {
         return restricted_state;
  }

  static int command_lock(int argc, char **argv)
  {
         int enabled;

         if (argc > 1) {
                 if (!parse_bool(argv[1], &enabled))
                         return EC_ERROR_PARAM1;
                 restricted_state = enabled;
         }

         ccprintf("The restricted console lock is %s\n",
                  restricted_state ? "enabled" : "disabled");

         return EC_SUCCESS;
  }
  DECLARE_CONSOLE_COMMAND_FLAGS(lock, command_lock,
                                "[<BOOLEAN>]",
                                "Get/Set the restricted console lock",
                                0);               /* no restrictions */

then you can use the "lock" command to enable and disable every
other console command except for it and "help".

Change-Id: Ic9517f9ea7a9867f15e5d14b302246070163d558
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/376186
Reviewed-by: Randall Spangler <rspangler@chromium.org>

0 files changed, 0 insertions, 0 deletions