other-licenses/7zstub/src/7zip/Common/OffsetStream.cpp@97036ab72558
other-licenses/7zstub/src/7zip/Common/OffsetStream.cpp
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 // OffsetStream.cpp
3 #include "StdAfx.h"
5 #include "Common/Defs.h"
6 #include "OffsetStream.h"
8 HRESULT COffsetOutStream::Init(IOutStream *stream, UInt64 offset)
9 {
10 _offset = offset;
11 _stream = stream;
12 return _stream->Seek(offset, STREAM_SEEK_SET, NULL);
13 }
15 STDMETHODIMP COffsetOutStream::Write(const void *data, UInt32 size, UInt32 *processedSize)
16 {
17 return _stream->Write(data, size, processedSize);
18 }
20 STDMETHODIMP COffsetOutStream::Seek(Int64 offset, UInt32 seekOrigin,
21 UInt64 *newPosition)
22 {
23 UInt64 absoluteNewPosition;
24 if (seekOrigin == STREAM_SEEK_SET)
25 offset += _offset;
26 HRESULT result = _stream->Seek(offset, seekOrigin, &absoluteNewPosition);
27 if (newPosition != NULL)
28 *newPosition = absoluteNewPosition - _offset;
29 return result;
30 }
32 STDMETHODIMP COffsetOutStream::SetSize(Int64 newSize)
33 {
34 return _stream->SetSize(_offset + newSize);
35 }
