reactos/lib/rtl/access.c

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