reactos/rostests/apitests/ntdll/NtProtectVirtualMemory.c

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/*
* PROJECT: ReactOS API Tests
* LICENSE: GPLv2+ - See COPYING in the top level directory
* PURPOSE: Test for the NtProtectVirtualMemory API
*/
#include <apitest.h>
#define WIN32_NO_STATUS
#include <ndk/rtlfuncs.h>
#include <ndk/mmfuncs.h>
START_TEST(NtProtectVirtualMemory)
{
ULONG* allocationStart = NULL;
NTSTATUS status;
SIZE_T allocationSize;
ULONG oldProtection;
/* Reserve a page */
allocationSize = PAGE_SIZE;
status = NtAllocateVirtualMemory(NtCurrentProcess(),
(void**)&allocationStart,
0,
&allocationSize,
MEM_RESERVE,
PAGE_NOACCESS);
ok(NT_SUCCESS(status), "Reserving memory failed\n");
/* Commit the page (RW) */
status = NtAllocateVirtualMemory(NtCurrentProcess(),
(void**)&allocationStart,
0,
&allocationSize,
MEM_COMMIT,
PAGE_READWRITE);
ok(NT_SUCCESS(status), "Commiting memory failed\n");
/* Try writing it */
StartSeh()
{
*allocationStart = 0xFF;
} EndSeh(STATUS_SUCCESS);
/* Try reading it */
StartSeh()
{
ok(*allocationStart == 0xFF, "Memory was not written\n");
} EndSeh(STATUS_SUCCESS);
/* Set it as read only */
status = NtProtectVirtualMemory(NtCurrentProcess(),
(void**)&allocationStart,
&allocationSize,
PAGE_READONLY,
&oldProtection);
ok(NT_SUCCESS(status), "NtProtectVirtualMemory failed.\n");
ok(oldProtection == PAGE_READWRITE, "Expected PAGE_READWRITE, got %08x.\n", oldProtection);
/* Try writing it */
StartSeh()
{
*allocationStart = 0xAA;
} EndSeh(STATUS_ACCESS_VIOLATION);
/* Try reading it */
StartSeh()
{
ok(*allocationStart == 0xFF, "read-only memory were changed.\n");
} EndSeh(STATUS_SUCCESS);
/* Set it as no access */
status = NtProtectVirtualMemory(NtCurrentProcess(),
(void**)&allocationStart,
&allocationSize,
PAGE_NOACCESS,
&oldProtection);
ok(NT_SUCCESS(status), "NtProtectVirtualMemory failed.\n");
ok(oldProtection == PAGE_READONLY, "Expected PAGE_READONLY, got %08x.\n", oldProtection);
/* Try writing it */
StartSeh()
{
*allocationStart = 0xAA;
} EndSeh(STATUS_ACCESS_VIOLATION);
/* Try reading it */
StartSeh()
{
ok(*allocationStart == 0, "Test should not go as far as this.\n");
} EndSeh(STATUS_ACCESS_VIOLATION);
/* Free memory */
status = NtFreeVirtualMemory(NtCurrentProcess(),
(void**)&allocationStart,
&allocationSize,
MEM_RELEASE);
ok(NT_SUCCESS(status), "Failed freeing memory.\n");
}