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 <ddk/ntddk.h>
  13 #include <ntdll/rtl.h>
  14
  15 #define NDEBUG
  16 #include <debug.h>
  17
  18 /* FUNCTIONS ***************************************************************/
  19
  20 /*
  21  * @implemented
  22  */
  23 BOOLEAN STDCALL
  24 RtlAreAllAccessesGranted(ACCESS_MASK GrantedAccess,
  25                          ACCESS_MASK DesiredAccess)
  26 {
  27   PAGED_CODE_RTL();
  28   return ((GrantedAccess & DesiredAccess) == DesiredAccess);
  29 }
  30
  31
  32 /*
  33  * @implemented
  34  */
  35 BOOLEAN STDCALL
  36 RtlAreAnyAccessesGranted(ACCESS_MASK GrantedAccess,
  37                          ACCESS_MASK DesiredAccess)
  38 {
  39   PAGED_CODE_RTL();
  40   return ((GrantedAccess & DesiredAccess) != 0);
  41 }
  42
  43
  44 /*
  45  * @implemented
  46  */
  47 VOID STDCALL
  48 RtlMapGenericMask(PACCESS_MASK AccessMask,
  49                   PGENERIC_MAPPING GenericMapping)
  50 {
  51   PAGED_CODE_RTL();
  52
  53   if (*AccessMask & GENERIC_READ)
  54     *AccessMask |= GenericMapping->GenericRead;
  55
  56   if (*AccessMask & GENERIC_WRITE)
  57     *AccessMask |= GenericMapping->GenericWrite;
  58
  59   if (*AccessMask & GENERIC_EXECUTE)
  60     *AccessMask |= GenericMapping->GenericExecute;
  61
  62   if (*AccessMask & GENERIC_ALL)
  63     *AccessMask |= GenericMapping->GenericAll;
  64
  65   *AccessMask &= ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
  66 }
  67
  68 /* EOF */