mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
47ed3a3675
The bulk of this commit was generated by running:
run-clang-tidy.py \
-checks='-*,llvm-namespace-comment' \
-header-filter=^/.../mozilla-central/.* \
-fix
70 lines
1.9 KiB
C++
70 lines
1.9 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 http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "FileUtilsWin.h"
|
|
|
|
#include <windows.h>
|
|
#include <psapi.h>
|
|
|
|
#include "nsWindowsHelpers.h"
|
|
|
|
namespace {
|
|
|
|
// Scoped type used by HandleToFilename
|
|
struct ScopedMappedViewTraits
|
|
{
|
|
typedef void* type;
|
|
static void* empty()
|
|
{
|
|
return nullptr;
|
|
}
|
|
static void release(void* aPtr)
|
|
{
|
|
UnmapViewOfFile(aPtr);
|
|
}
|
|
};
|
|
typedef mozilla::Scoped<ScopedMappedViewTraits> ScopedMappedView;
|
|
|
|
} // namespace
|
|
|
|
namespace mozilla {
|
|
|
|
bool
|
|
HandleToFilename(HANDLE aHandle, const LARGE_INTEGER& aOffset,
|
|
nsAString& aFilename)
|
|
{
|
|
aFilename.Truncate();
|
|
// This implementation is nice because it uses fully documented APIs that
|
|
// are available on all Windows versions that we support.
|
|
nsAutoHandle fileMapping(CreateFileMapping(aHandle, nullptr, PAGE_READONLY,
|
|
0, 1, nullptr));
|
|
if (!fileMapping) {
|
|
return false;
|
|
}
|
|
ScopedMappedView view(MapViewOfFile(fileMapping, FILE_MAP_READ,
|
|
aOffset.HighPart, aOffset.LowPart, 1));
|
|
if (!view) {
|
|
return false;
|
|
}
|
|
nsAutoString mappedFilename;
|
|
DWORD len = 0;
|
|
SetLastError(ERROR_SUCCESS);
|
|
do {
|
|
mappedFilename.SetLength(mappedFilename.Length() + MAX_PATH);
|
|
len = GetMappedFileNameW(GetCurrentProcess(), view,
|
|
wwc(mappedFilename.BeginWriting()),
|
|
mappedFilename.Length());
|
|
} while (!len && GetLastError() == ERROR_INSUFFICIENT_BUFFER);
|
|
if (!len) {
|
|
return false;
|
|
}
|
|
mappedFilename.Truncate(len);
|
|
return NtPathToDosPath(mappedFilename, aFilename);
|
|
}
|
|
|
|
} // namespace mozilla
|
|
|