reactos/lib/rtl/access.c

65 lines
1.6 KiB
C
Raw Normal View History

/* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS system libraries
* FILE: lib/rtl/access.c
* PURPOSE: Access rights handling functions
* PROGRAMMERS: Eric Kohl
*/
/* INCLUDES *****************************************************************/
#include <rtl.h>
#define NDEBUG
#include <debug.h>
/* FUNCTIONS ***************************************************************/
/*
* @implemented
*/
BOOLEAN
NTAPI
RtlAreAllAccessesGranted(IN ACCESS_MASK GrantedAccess,
IN ACCESS_MASK DesiredAccess)
{
PAGED_CODE_RTL();
/* Return if there's no leftover bits after granting all of them */
return !(~GrantedAccess & DesiredAccess);
}
/*
* @implemented
*/
BOOLEAN
NTAPI
RtlAreAnyAccessesGranted(IN ACCESS_MASK GrantedAccess,
IN ACCESS_MASK DesiredAccess)
{
PAGED_CODE_RTL();
/* Return if there's any leftover bits after granting all of them */
return ((GrantedAccess & DesiredAccess) != 0);
}
/*
* @implemented
*/
VOID
NTAPI
RtlMapGenericMask(IN OUT PACCESS_MASK AccessMask,
IN PGENERIC_MAPPING GenericMapping)
{
PAGED_CODE_RTL();
/* Convert mappings */
if (*AccessMask & GENERIC_READ) *AccessMask |= GenericMapping->GenericRead;
if (*AccessMask & GENERIC_WRITE) *AccessMask |= GenericMapping->GenericWrite;
if (*AccessMask & GENERIC_EXECUTE) *AccessMask |= GenericMapping->GenericExecute;
if (*AccessMask & GENERIC_ALL) *AccessMask |= GenericMapping->GenericAll;
/* Clear generic flags */
*AccessMask &= ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
}
/* EOF */