ShellPkg/Library/UefiShellLevel3CommandsLib/GetMtc.c

/** @file
  Main file for GetMtc shell level 3 function.

  (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
  Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved. <BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "UefiShellLevel3CommandsLib.h"

#include <Library/ShellLib.h>

/**
  Function for 'getmtc' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunGetMtc (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  EFI_STATUS    Status;
  LIST_ENTRY    *Package;
  CHAR16        *ProblemParam;
  SHELL_STATUS  ShellStatus;
  UINT64        Mtc;

  ProblemParam = NULL;
  ShellStatus  = SHELL_SUCCESS;

  //
  // initialize the shell lib (we must be in non-auto-init...)
  //
  Status = ShellInitialize ();
  ASSERT_EFI_ERROR (Status);

  //
  // parse the command line
  //
  Status = ShellCommandLineParse (EmptyParamList, &Package, &ProblemParam, TRUE);
  if (EFI_ERROR (Status)) {
    if ((Status == EFI_VOLUME_CORRUPTED) && (ProblemParam != NULL)) {
      ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel3HiiHandle, L"getmtc", ProblemParam);
      FreePool (ProblemParam);
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      ASSERT (FALSE);
    }
  } else {
    //
    // check for "-?"
    //
    if (ShellCommandLineGetFlag (Package, L"-?")) {
      ASSERT (FALSE);
    } else if (ShellCommandLineGetRawValue (Package, 1) != NULL) {
      ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel3HiiHandle, L"getmtc");
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      //
      // Get the monotonic counter count
      //
      Status = gBS->GetNextMonotonicCount (&Mtc);
      if (Status == EFI_DEVICE_ERROR) {
        ShellStatus = SHELL_DEVICE_ERROR;
      } else if (Status == EFI_SECURITY_VIOLATION) {
        ShellStatus = SHELL_SECURITY_VIOLATION;
      } else if (EFI_ERROR (Status)) {
        ShellStatus = SHELL_DEVICE_ERROR;
      }

      //
      // print it...
      //
      if (ShellStatus == SHELL_SUCCESS) {
        ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GET_MTC_OUTPUT), gShellLevel3HiiHandle, Mtc);
      }
    }

    //
    // free the command line package
    //
    ShellCommandLineFreeVarList (Package);
  }

  return (ShellStatus);
}