mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-23 12:51:06 +00:00
eab549fd19
clang-format version 12.0.0 (taskcluster-KEgO7qdgQ8uaewA6NkRnRA) Differential Revision: https://phabricator.services.mozilla.com/D114211
125 lines
4.4 KiB
C++
125 lines
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "mozilla/WindowsMapRemoteView.h"
|
|
|
|
#include "mozilla/Assertions.h"
|
|
#include "mozilla/DynamicallyLinkedFunctionPtr.h"
|
|
|
|
#include <winternl.h>
|
|
|
|
#if (NTDDI_VERSION < NTDDI_WIN10_RS2)
|
|
|
|
// MapViewOfFile2 is just an inline function that calls MapViewOfFileNuma2 with
|
|
// its preferred node set to NUMA_NO_PREFERRED_NODE
|
|
WINBASEAPI PVOID WINAPI MapViewOfFileNuma2(HANDLE aFileMapping, HANDLE aProcess,
|
|
ULONG64 aOffset, PVOID aBaseAddress,
|
|
SIZE_T aViewSize,
|
|
ULONG aAllocationType,
|
|
ULONG aPageProtection,
|
|
ULONG aPreferredNode);
|
|
|
|
WINBASEAPI BOOL WINAPI UnmapViewOfFile2(HANDLE aProcess, PVOID aBaseAddress,
|
|
ULONG aUnmapFlags);
|
|
|
|
#endif // (NTDDI_VERSION < NTDDI_WIN10_RS2)
|
|
|
|
enum SECTION_INHERIT { ViewShare = 1, ViewUnmap = 2 };
|
|
|
|
NTSTATUS NTAPI NtMapViewOfSection(
|
|
HANDLE aSection, HANDLE aProcess, PVOID* aBaseAddress, ULONG_PTR aZeroBits,
|
|
SIZE_T aCommitSize, PLARGE_INTEGER aSectionOffset, PSIZE_T aViewSize,
|
|
SECTION_INHERIT aInheritDisposition, ULONG aAllocationType,
|
|
ULONG aProtectionFlags);
|
|
|
|
NTSTATUS NTAPI NtUnmapViewOfSection(HANDLE aProcess, PVOID aBaseAddress);
|
|
|
|
static DWORD GetWin32ErrorCode(NTSTATUS aNtStatus) {
|
|
static const mozilla::StaticDynamicallyLinkedFunctionPtr<
|
|
decltype(&RtlNtStatusToDosError)>
|
|
pRtlNtStatusToDosError(L"ntdll.dll", "RtlNtStatusToDosError");
|
|
|
|
MOZ_ASSERT(!!pRtlNtStatusToDosError);
|
|
if (!pRtlNtStatusToDosError) {
|
|
return ERROR_GEN_FAILURE;
|
|
}
|
|
|
|
return pRtlNtStatusToDosError(aNtStatus);
|
|
}
|
|
|
|
namespace mozilla {
|
|
|
|
MFBT_API void* MapRemoteViewOfFile(HANDLE aFileMapping, HANDLE aProcess,
|
|
ULONG64 aOffset, PVOID aBaseAddress,
|
|
SIZE_T aViewSize, ULONG aAllocationType,
|
|
ULONG aProtectionFlags) {
|
|
static const StaticDynamicallyLinkedFunctionPtr<decltype(&MapViewOfFileNuma2)>
|
|
pMapViewOfFileNuma2(L"Api-ms-win-core-memory-l1-1-5.dll",
|
|
"MapViewOfFileNuma2");
|
|
|
|
if (!!pMapViewOfFileNuma2) {
|
|
return pMapViewOfFileNuma2(aFileMapping, aProcess, aOffset, aBaseAddress,
|
|
aViewSize, aAllocationType, aProtectionFlags,
|
|
NUMA_NO_PREFERRED_NODE);
|
|
}
|
|
|
|
static const StaticDynamicallyLinkedFunctionPtr<decltype(&NtMapViewOfSection)>
|
|
pNtMapViewOfSection(L"ntdll.dll", "NtMapViewOfSection");
|
|
|
|
MOZ_ASSERT(!!pNtMapViewOfSection);
|
|
if (!pNtMapViewOfSection) {
|
|
return nullptr;
|
|
}
|
|
|
|
// For the sake of consistency, we only permit the same flags that
|
|
// MapViewOfFileNuma2 allows
|
|
if (aAllocationType != 0 && aAllocationType != MEM_RESERVE &&
|
|
aAllocationType != MEM_LARGE_PAGES) {
|
|
::SetLastError(ERROR_INVALID_PARAMETER);
|
|
return nullptr;
|
|
}
|
|
|
|
NTSTATUS ntStatus;
|
|
|
|
LARGE_INTEGER offset;
|
|
offset.QuadPart = aOffset;
|
|
|
|
ntStatus = pNtMapViewOfSection(aFileMapping, aProcess, &aBaseAddress, 0, 0,
|
|
&offset, &aViewSize, ViewUnmap,
|
|
aAllocationType, aProtectionFlags);
|
|
if (NT_SUCCESS(ntStatus)) {
|
|
::SetLastError(ERROR_SUCCESS);
|
|
return aBaseAddress;
|
|
}
|
|
|
|
::SetLastError(GetWin32ErrorCode(ntStatus));
|
|
return nullptr;
|
|
}
|
|
|
|
MFBT_API bool UnmapRemoteViewOfFile(HANDLE aProcess, PVOID aBaseAddress) {
|
|
static const StaticDynamicallyLinkedFunctionPtr<decltype(&UnmapViewOfFile2)>
|
|
pUnmapViewOfFile2(L"kernel32.dll", "UnmapViewOfFile2");
|
|
|
|
if (!!pUnmapViewOfFile2) {
|
|
return !!pUnmapViewOfFile2(aProcess, aBaseAddress, 0);
|
|
}
|
|
|
|
static const StaticDynamicallyLinkedFunctionPtr<
|
|
decltype(&NtUnmapViewOfSection)>
|
|
pNtUnmapViewOfSection(L"ntdll.dll", "NtUnmapViewOfSection");
|
|
|
|
MOZ_ASSERT(!!pNtUnmapViewOfSection);
|
|
if (!pNtUnmapViewOfSection) {
|
|
return false;
|
|
}
|
|
|
|
NTSTATUS ntStatus = pNtUnmapViewOfSection(aProcess, aBaseAddress);
|
|
::SetLastError(GetWin32ErrorCode(ntStatus));
|
|
return NT_SUCCESS(ntStatus);
|
|
}
|
|
|
|
} // namespace mozilla
|