ShellPkg/Library/UefiShellLevel1CommandsLib/Exit.c

   1 /** @file
   2   Main file for exit shell level 1 function.
   3
   4   Copyright (c) 2009 - 2011, 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 "UefiShellLevel1CommandsLib.h"
  16
  17 STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
  18   {L"/b", TypeFlag},
  19   {NULL, TypeMax}
  20   };
  21
  22 /**
  23   Function for 'exit' command.
  24
  25   @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  26   @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
  27 **/
  28 SHELL_STATUS
  29 EFIAPI
  30 ShellCommandRunExit (
  31   IN EFI_HANDLE        ImageHandle,
  32   IN EFI_SYSTEM_TABLE  *SystemTable
  33   )
  34 {
  35   EFI_STATUS          Status;
  36   LIST_ENTRY          *Package;
  37   CHAR16              *ProblemParam;
  38   SHELL_STATUS        ShellStatus;
  39   UINT64              RetVal;
  40   CONST CHAR16        *Return;
  41
  42   ShellStatus         = SHELL_SUCCESS;
  43
  44   //
  45   // initialize the shell lib (we must be in non-auto-init...)
  46   //
  47   Status = ShellInitialize();
  48   ASSERT_EFI_ERROR(Status);
  49
  50   Status = CommandInit();
  51   ASSERT_EFI_ERROR(Status);
  52
  53   //
  54   // parse the command line
  55   //
  56   Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
  57   if (EFI_ERROR(Status)) {
  58     if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
  59       ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel1HiiHandle, ProblemParam);
  60       FreePool(ProblemParam);
  61       ShellStatus = SHELL_INVALID_PARAMETER;
  62     } else {
  63       ASSERT(FALSE);
  64     }
  65   } else {
  66
  67     //
  68     // return the specified error code
  69     //
  70     Return = ShellCommandLineGetRawValue(Package, 1);
  71     if (Return != NULL) {
  72       Status = ShellConvertStringToUint64(Return, &RetVal, FALSE, FALSE);
  73       if (EFI_ERROR(Status)) {
  74         ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel1HiiHandle, Return);
  75         ShellStatus = SHELL_INVALID_PARAMETER;
  76       } else {
  77         //
  78         // If we are in a batch file and /b then pass TRUE otherwise false...
  79         //
  80         ShellCommandRegisterExit((BOOLEAN)(gEfiShellProtocol->BatchIsActive() && ShellCommandLineGetFlag(Package, L"/b")));
  81
  82         ShellStatus = (SHELL_STATUS)(RetVal);
  83       }
  84     } else {
  85       // If we are in a batch file and /b then pass TRUE otherwise false...
  86       //
  87       ShellCommandRegisterExit((BOOLEAN)(gEfiShellProtocol->BatchIsActive() && ShellCommandLineGetFlag(Package, L"/b")));
  88
  89       ShellStatus = (SHELL_STATUS)0;
  90     }
  91
  92     ShellCommandLineFreeVarList (Package);
  93   }
  94   return (ShellStatus);
  95 }
  96