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fix windows physical disk offset support

This commit is contained in:
Arvid Norberg 2009-09-07 05:31:29 +00:00
parent 3e9725b5d7
commit 578fbccceb
1 changed files with 8 additions and 1 deletions
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9
src/file.cpp
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@ -830,7 +830,14 @@ namespace libtorrent
if (DeviceIoControl(m_file_handle, FSCTL_GET_RETRIEVAL_POINTERS, &in
, sizeof(in), &out, sizeof(out), &out_bytes, 0) == 0)
return 0;
{
DWORD error = GetLastError();
TORRENT_ASSERT(error != ERROR_INVALID_PARAMETER);
// insufficient buffer error is expected, but we're
// only interested in the first extent anyway
if (error != ERROR_MORE_DATA) return 0;
}
if (out_bytes < sizeof(out)) return 0;
if (out.ExtentCount == 0) return 0;
if (out.Extents[0].Lcn.QuadPart == (LONGLONG)-1) return 0;