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Never try to stuff more into the Ioctl OutputBuffer than will fit

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svn path=/trunk/; revision=7533
This commit is contained in:
Gé van Geldorp
2004-01-09 20:22:38 +00:00
parent 42367670aa
commit c2ae3f1124
1 changed files with 14 additions and 2 deletions
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reactos/ntoskrnl/io/cleanup.c
+14 -2
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@@ -15,6 +15,7 @@
#include <internal/ob.h>
#include <internal/mm.h>
#include <internal/ps.h>
#include <rosrtl/minmax.h>
#define NDEBUG
#include <internal/debug.h>
@@ -38,8 +39,19 @@ VOID IoDeviceControlCompletion(PDEVICE_OBJECT DeviceObject,
else
{
IoControlCode = IoStack->Parameters.DeviceIoControl.IoControlCode;
OutputBufferLength = NT_SUCCESS(Irp->IoStatus.Status)
? Irp->IoStatus.Information : 0;
if (NT_SUCCESS(Irp->IoStatus.Status))
{
OutputBufferLength = Irp->IoStatus.Information;
if (IoStack->Parameters.DeviceIoControl.OutputBufferLength < OutputBufferLength)
{
Irp->IoStatus.Status = STATUS_DATA_OVERRUN;
OutputBufferLength = IoStack->Parameters.DeviceIoControl.OutputBufferLength;
}
}
else
{
OutputBufferLength = 0;
}
}
switch (IO_METHOD_FROM_CTL_CODE(IoControlCode))