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sys: FspFsvrtTransact: now has timeout

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This commit is contained in:
Bill Zissimopoulos
2015-12-14 12:36:40 -08:00
parent 5d6d938039
commit aee12e1c5f
5 changed files with 32 additions and 22 deletions
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19
src/sys/fsctl.c
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@ -353,6 +353,8 @@ static NTSTATUS FspFsvrtTransact(
FSP_FSCTL_TRANSACT_RSP *Response, *NextResponse;
FSP_FSCTL_TRANSACT_REQ *Request, *PendingIrpRequest;
PIRP ProcessIrp, PendingIrp;
ULONG TransactTimeout;
LARGE_INTEGER Timeout;
/* access check */
Result = FspSecuritySubjectContextAccessCheck(
@ -380,12 +382,21 @@ static NTSTATUS FspFsvrtTransact(
}
/* wait for an IRP to arrive */
retry:
while (0 == (PendingIrp = FspIoqNextPendingIrp(&FsvrtDeviceExtension->Ioq, (ULONG)-1L)))
TransactTimeout = FsvrtDeviceExtension->VolumeParams.TransactTimeout;
if (FspFsctlTransactTimeoutMinimum > TransactTimeout || TransactTimeout > FspFsctlTransactTimeoutMaximum)
TransactTimeout = FspFsctlTransactTimeoutDefault;
KeQuerySystemTime(&Timeout);
Timeout.QuadPart += TransactTimeout * 10000; /* convert millis to nanos and add to absolute time */
while (0 == (PendingIrp = FspIoqNextPendingIrp(&FsvrtDeviceExtension->Ioq, &Timeout)))
{
if (FspIoqStopped(&FsvrtDeviceExtension->Ioq))
return STATUS_CANCELLED;
}
if (FspIoqTimeout == PendingIrp)
{
Irp->IoStatus.Information = 0;
return STATUS_SUCCESS;
}
/* send any pending IRP's to the user-mode file system */
Request = SystemBuffer;
@ -426,10 +437,6 @@ retry:
break;
}
if (Request == SystemBuffer)
goto retry;
Irp->IoStatus.Information = (PUINT8)Request - (PUINT8)SystemBuffer;
return STATUS_SUCCESS;