ShellPkg/Library/UefiShellLevel3CommandsLib/GetMtc.c

   1 /** @file
   2   Main file for GetMtc shell level 3 function.
   3
   4   Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved. <BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include "UefiShellLevel3CommandsLib.h"
  16
  17 #include <Library/ShellLib.h>
  18
  19 /**
  20   Function for 'getmtc' command.
  21
  22   @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  23   @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
  24 **/
  25 SHELL_STATUS
  26 EFIAPI
  27 ShellCommandRunGetMtc (
  28   IN EFI_HANDLE        ImageHandle,
  29   IN EFI_SYSTEM_TABLE  *SystemTable
  30   )
  31 {
  32   EFI_STATUS          Status;
  33   LIST_ENTRY          *Package;
  34   CHAR16              *ProblemParam;
  35   SHELL_STATUS        ShellStatus;
  36   UINT64              Mtc;
  37
  38   ProblemParam        = NULL;
  39   ShellStatus         = SHELL_SUCCESS;
  40
  41   //
  42   // initialize the shell lib (we must be in non-auto-init...)
  43   //
  44   Status = ShellInitialize();
  45   ASSERT_EFI_ERROR(Status);
  46
  47   //
  48   // parse the command line
  49   //
  50   Status = ShellCommandLineParse (EmptyParamList, &Package, &ProblemParam, TRUE);
  51   if (EFI_ERROR(Status)) {
  52     if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
  53       ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel3HiiHandle, ProblemParam);
  54       FreePool(ProblemParam);
  55       ShellStatus = SHELL_INVALID_PARAMETER;
  56     } else {
  57       ASSERT(FALSE);
  58     }
  59   } else {
  60     //
  61     // check for "-?"
  62     //
  63     if (ShellCommandLineGetFlag(Package, L"-?")) {
  64       ASSERT(FALSE);
  65     } else if (ShellCommandLineGetRawValue(Package, 1) != NULL) {
  66       ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel3HiiHandle);
  67       ShellStatus = SHELL_INVALID_PARAMETER;
  68     } else {
  69       //
  70       // Get the monotonic counter count
  71       //
  72       Status = gBS->GetNextMonotonicCount(&Mtc);
  73       switch(Status) {
  74         case EFI_DEVICE_ERROR:
  75           ShellStatus = SHELL_DEVICE_ERROR;
  76           break;
  77         case EFI_SECURITY_VIOLATION:
  78           ShellStatus = SHELL_SECURITY_VIOLATION;
  79           break;
  80         default:
  81           if (EFI_ERROR(Status)) {
  82             ShellStatus = SHELL_DEVICE_ERROR;
  83           }
  84       }
  85
  86       //
  87       // print it...
  88       //
  89       if (ShellStatus == SHELL_SUCCESS) {
  90         ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GET_MTC_OUTPUT), gShellLevel3HiiHandle, Mtc);
  91       }
  92     }
  93     //
  94     // free the command line package
  95     //
  96     ShellCommandLineFreeVarList (Package);
  97   }
  98
  99   return (ShellStatus);
 100 }
 101