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tst: passthrough file system: WIP

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This commit is contained in:
Bill Zissimopoulos 2017-01-20 00:27:02 -08:00
parent d0c700eb0f
commit 61a001baf1
1 changed files with 15 additions and 1 deletions
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16
tst/passthrough/passthrough.c
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@ -196,7 +196,16 @@ static NTSTATUS Read(FSP_FILE_SYSTEM *FileSystem,
PVOID FileContext, PVOID Buffer, UINT64 Offset, ULONG Length,
PULONG PBytesTransferred)
{
return STATUS_INVALID_DEVICE_REQUEST;
HANDLE Handle = FileContext;
OVERLAPPED Overlapped = { 0 };
Overlapped.Offset = (DWORD)Offset;
Overlapped.OffsetHigh = (DWORD)(Offset >> 32);
if (!ReadFile(Handle, Buffer, Length, PBytesTransferred, &Overlapped))
return FspNtStatusFromWin32(GetLastError());
return STATUS_SUCCESS;
}
static NTSTATUS Write(FSP_FILE_SYSTEM *FileSystem,
@ -317,6 +326,11 @@ static NTSTATUS ReadDirectory(FSP_FILE_SYSTEM *FileSystem,
return FspNtStatusFromWin32(GetLastError());
for (;;)
{
/*
* NOTE: The root directory does not have the dot (".", "..") entries
* under Windows. This sample file system always adds them regardless.
*/
/*
* The simple conditional `Offset > NextOffset++` only works when files
* are not created/deleted in the directory while it is being read.