gfx/skia/trunk/src/ports/SkOSFile_win.cpp@129ffea94266 (annotated)
gfx/skia/trunk/src/ports/SkOSFile_win.cpp
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright 2013 Google Inc. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 5 | * found in the LICENSE file. |
| michael@0 | 6 | */ |
| michael@0 | 7 | |
| michael@0 | 8 | #include "SkOSFile.h" |
| michael@0 | 9 | |
| michael@0 | 10 | #include "SkTFitsIn.h" |
| michael@0 | 11 | |
| michael@0 | 12 | #include <io.h> |
| michael@0 | 13 | #include <stdio.h> |
| michael@0 | 14 | #include <sys/stat.h> |
| michael@0 | 15 | |
| michael@0 | 16 | typedef struct { |
| michael@0 | 17 | ULONGLONG fVolume; |
| michael@0 | 18 | ULONGLONG fLsbSize; |
| michael@0 | 19 | ULONGLONG fMsbSize; |
| michael@0 | 20 | } SkFILEID; |
| michael@0 | 21 | |
| michael@0 | 22 | static bool sk_ino(SkFILE* f, SkFILEID* id) { |
| michael@0 | 23 | int fileno = _fileno((FILE*)f); |
| michael@0 | 24 | if (fileno < 0) { |
| michael@0 | 25 | return false; |
| michael@0 | 26 | } |
| michael@0 | 27 | |
| michael@0 | 28 | HANDLE file = (HANDLE)_get_osfhandle(fileno); |
| michael@0 | 29 | if (INVALID_HANDLE_VALUE == file) { |
| michael@0 | 30 | return false; |
| michael@0 | 31 | } |
| michael@0 | 32 | |
| michael@0 | 33 | //TODO: call GetFileInformationByHandleEx on Vista and later with FileIdInfo. |
| michael@0 | 34 | BY_HANDLE_FILE_INFORMATION info; |
| michael@0 | 35 | if (0 == GetFileInformationByHandle(file, &info)) { |
| michael@0 | 36 | return false; |
| michael@0 | 37 | } |
| michael@0 | 38 | id->fVolume = info.dwVolumeSerialNumber; |
| michael@0 | 39 | id->fLsbSize = info.nFileIndexLow + (((ULONGLONG)info.nFileIndexHigh) << 32); |
| michael@0 | 40 | id->fMsbSize = 0; |
| michael@0 | 41 | |
| michael@0 | 42 | return true; |
| michael@0 | 43 | } |
| michael@0 | 44 | |
| michael@0 | 45 | bool sk_fidentical(SkFILE* a, SkFILE* b) { |
| michael@0 | 46 | SkFILEID aID, bID; |
| michael@0 | 47 | return sk_ino(a, &aID) && sk_ino(b, &bID) |
| michael@0 | 48 | && aID.fLsbSize == bID.fLsbSize |
| michael@0 | 49 | && aID.fMsbSize == bID.fMsbSize |
| michael@0 | 50 | && aID.fVolume == bID.fVolume; |
| michael@0 | 51 | } |
| michael@0 | 52 | |
| michael@0 | 53 | class SkAutoNullKernelHandle : SkNoncopyable { |
| michael@0 | 54 | public: |
| michael@0 | 55 | SkAutoNullKernelHandle(const HANDLE handle) : fHandle(handle) { } |
| michael@0 | 56 | ~SkAutoNullKernelHandle() { CloseHandle(fHandle); } |
| michael@0 | 57 | operator HANDLE() const { return fHandle; } |
| michael@0 | 58 | bool isValid() const { return NULL != fHandle; } |
| michael@0 | 59 | private: |
| michael@0 | 60 | HANDLE fHandle; |
| michael@0 | 61 | }; |
| michael@0 | 62 | typedef SkAutoNullKernelHandle SkAutoWinMMap; |
| michael@0 | 63 | |
| michael@0 | 64 | void sk_fmunmap(const void* addr, size_t) { |
| michael@0 | 65 | UnmapViewOfFile(addr); |
| michael@0 | 66 | } |
| michael@0 | 67 | |
| michael@0 | 68 | void* sk_fdmmap(int fileno, size_t* length) { |
| michael@0 | 69 | HANDLE file = (HANDLE)_get_osfhandle(fileno); |
| michael@0 | 70 | if (INVALID_HANDLE_VALUE == file) { |
| michael@0 | 71 | return NULL; |
| michael@0 | 72 | } |
| michael@0 | 73 | |
| michael@0 | 74 | LARGE_INTEGER fileSize; |
| michael@0 | 75 | if (0 == GetFileSizeEx(file, &fileSize)) { |
| michael@0 | 76 | //TODO: use SK_TRACEHR(GetLastError(), "Could not get file size.") to report. |
| michael@0 | 77 | return NULL; |
| michael@0 | 78 | } |
| michael@0 | 79 | if (!SkTFitsIn<size_t>(fileSize.QuadPart)) { |
| michael@0 | 80 | return NULL; |
| michael@0 | 81 | } |
| michael@0 | 82 | |
| michael@0 | 83 | SkAutoWinMMap mmap(CreateFileMapping(file, NULL, PAGE_READONLY, 0, 0, NULL)); |
| michael@0 | 84 | if (!mmap.isValid()) { |
| michael@0 | 85 | //TODO: use SK_TRACEHR(GetLastError(), "Could not create file mapping.") to report. |
| michael@0 | 86 | return NULL; |
| michael@0 | 87 | } |
| michael@0 | 88 | |
| michael@0 | 89 | // Eventually call UnmapViewOfFile |
| michael@0 | 90 | void* addr = MapViewOfFile(mmap, FILE_MAP_READ, 0, 0, 0); |
| michael@0 | 91 | if (NULL == addr) { |
| michael@0 | 92 | //TODO: use SK_TRACEHR(GetLastError(), "Could not map view of file.") to report. |
| michael@0 | 93 | return NULL; |
| michael@0 | 94 | } |
| michael@0 | 95 | |
| michael@0 | 96 | *length = static_cast<size_t>(fileSize.QuadPart); |
| michael@0 | 97 | return addr; |
| michael@0 | 98 | } |
| michael@0 | 99 | |
| michael@0 | 100 | int sk_fileno(SkFILE* f) { |
| michael@0 | 101 | return _fileno((FILE*)f); |
| michael@0 | 102 | } |
| michael@0 | 103 | |
| michael@0 | 104 | void* sk_fmmap(SkFILE* f, size_t* length) { |
| michael@0 | 105 | int fileno = sk_fileno(f); |
| michael@0 | 106 | if (fileno < 0) { |
| michael@0 | 107 | return NULL; |
| michael@0 | 108 | } |
| michael@0 | 109 | |
| michael@0 | 110 | return sk_fdmmap(fileno, length); |
| michael@0 | 111 | } |
