reactos/lib/rtl/access.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS kernel
   4  * FILE:            lib/rtl/access.c
   5  * PURPOSE:         Access rights handling functions
   6  *
   7  * PROGRAMMERS:     Eric Kohl
   8  */
   9
  10 /* INCLUDES *****************************************************************/
  11
  12 #include "rtl.h"
  13
  14 #define NDEBUG
  15 #include <debug.h>
  16
  17 /* FUNCTIONS ***************************************************************/
  18
  19 /*
  20  * @implemented
  21  */
  22 BOOLEAN STDCALL
  23 RtlAreAllAccessesGranted(ACCESS_MASK GrantedAccess,
  24                          ACCESS_MASK DesiredAccess)
  25 {
  26   PAGED_CODE_RTL();
  27   return ((GrantedAccess & DesiredAccess) == DesiredAccess);
  28 }
  29
  30
  31 /*
  32  * @implemented
  33  */
  34 BOOLEAN STDCALL
  35 RtlAreAnyAccessesGranted(ACCESS_MASK GrantedAccess,
  36                          ACCESS_MASK DesiredAccess)
  37 {
  38   PAGED_CODE_RTL();
  39   return ((GrantedAccess & DesiredAccess) != 0);
  40 }
  41
  42
  43 /*
  44  * @implemented
  45  */
  46 VOID STDCALL
  47 RtlMapGenericMask(PACCESS_MASK AccessMask,
  48                   PGENERIC_MAPPING GenericMapping)
  49 {
  50   PAGED_CODE_RTL();
  51
  52   if (*AccessMask & GENERIC_READ)
  53     *AccessMask |= GenericMapping->GenericRead;
  54
  55   if (*AccessMask & GENERIC_WRITE)
  56     *AccessMask |= GenericMapping->GenericWrite;
  57
  58   if (*AccessMask & GENERIC_EXECUTE)
  59     *AccessMask |= GenericMapping->GenericExecute;
  60
  61   if (*AccessMask & GENERIC_ALL)
  62     *AccessMask |= GenericMapping->GenericAll;
  63
  64   *AccessMask &= ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
  65 }
  66
  67 /* EOF */