ShellPkg/for: Fix potential null pointer deference

[mirror_edk2.git] / ShellPkg / Library / UefiShellDebug1CommandsLib / SmbiosView / SmbiosView.h

/** @file\r
  Tools of clarify the content of the smbios table.\r
\r
  Copyright (c) 2005 - 2015, Intel Corporation. All rights reserved.<BR>\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#ifndef _SMBIOS_VIEW_H_\r
#define _SMBIOS_VIEW_H_\r
\r
#define STRUCTURE_TYPE_RANDOM     (UINT8) 0xFE\r
#define STRUCTURE_TYPE_INVALID    (UINT8) 0xFF\r
\r
typedef struct {\r
  UINT16  Index;\r
  UINT8   Type;\r
  UINT16  Handle;\r
  UINT16  Addr;   // offset from table head\r
  UINT16  Length; // total structure length\r
} STRUCTURE_STATISTICS;\r
\r
/**\r
  Query all structures Data from SMBIOS table and Display\r
  the information to users as required display option.\r
\r
  @param[in] QueryType      Structure type to view.\r
  @param[in] QueryHandle    Structure handle to view.\r
  @param[in] Option         Display option: none,outline,normal,detail.\r
  @param[in] RandomView     Support for -h parameter.\r
\r
  @retval EFI_SUCCESS           print is successful.\r
  @retval EFI_BAD_BUFFER_SIZE   structure is out of the range of SMBIOS table.\r
**/\r
EFI_STATUS\r
SMBiosView (\r
  IN  UINT8     QueryType,\r
  IN  UINT16    QueryHandle,\r
  IN  UINT8     Option,\r
  IN  BOOLEAN   RandomView\r
  );\r
\r
/**\r
  Query all structures Data from SMBIOS table and Display\r
  the information to users as required display option.\r
\r
  @param[in] QueryType      Structure type to view.\r
  @param[in] QueryHandle    Structure handle to view.\r
  @param[in] Option         Display option: none,outline,normal,detail.\r
  @param[in] RandomView     Support for -h parameter.\r
\r
  @retval EFI_SUCCESS           print is successful.\r
  @retval EFI_BAD_BUFFER_SIZE   structure is out of the range of SMBIOS table.\r
**/\r
EFI_STATUS\r
SMBios64View (\r
  IN  UINT8     QueryType,\r
  IN  UINT16    QueryHandle,\r
  IN  UINT8     Option,\r
  IN  BOOLEAN   RandomView\r
  );\r
\r
/**\r
  Function to initialize the global mStatisticsTable object.\r
\r
  @retval EFI_SUCCESS           print is successful.\r
**/\r
EFI_STATUS\r
InitSmbiosTableStatistics (\r
  VOID\r
  );\r
\r
/**\r
  Function to initialize the global mSmbios64BitStatisticsTable object.\r
\r
  @retval EFI_SUCCESS           print is successful.\r
**/\r
EFI_STATUS\r
InitSmbios64BitTableStatistics (\r
  VOID\r
  );\r
\r
/**\r
  Function to display the global mStatisticsTable object.\r
\r
  @param[in] Option             ECHO, NORMAL, or DETAIL control the amount of detail displayed.\r
\r
  @retval EFI_SUCCESS           print is successful.\r
**/\r
EFI_STATUS\r
DisplayStatisticsTable (\r
  IN UINT8 Option\r
  );\r
\r
/**\r
  Function to display the global mSmbios64BitStatisticsTable object.\r
\r
  @param[in] Option             ECHO, NORMAL, or DETAIL control the amount of detail displayed.\r
\r
  @retval EFI_SUCCESS           print is successful.\r
**/\r
EFI_STATUS\r
DisplaySmbios64BitStatisticsTable (\r
  IN UINT8 Option\r
  );\r
\r
/**\r
  function to return a string of the detail level.\r
\r
  @param[in] ShowType         The detail level whose name is desired in clear text.\r
\r
  @return   A pointer to a string representing the ShowType (or 'undefined type' if not known).\r
**/\r
CHAR16*\r
GetShowTypeString (\r
  UINT8 ShowType\r
  );\r
\r
extern UINT8  gShowType;\r
\r
extern UINTN  mSmbios64BitTableLength;\r
\r
#endif\r