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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [win-pv-devel] [PATCH 3/4] Add SharedInfo IOCTL interface
Adds IOCTLs for:
* GetTime - returns Xen wallclock time
Signed-off-by: Owen Smith <owen.smith@xxxxxxxxxx>
---
include/xeniface_ioctls.h | 9 ++++++
src/xeniface/ioctl_sharedinfo.c | 68 ++++++++++++++++++++++++++++++++++++++++
src/xeniface/ioctls.c | 6 ++++
src/xeniface/ioctls.h | 9 ++++++
vs2012/xeniface/xeniface.vcxproj | 1 +
vs2013/xeniface/xeniface.vcxproj | 1 +
6 files changed, 94 insertions(+)
create mode 100644 src/xeniface/ioctl_sharedinfo.c
diff --git a/include/xeniface_ioctls.h b/include/xeniface_ioctls.h
index 5f65f14..dcddb5e 100644
--- a/include/xeniface_ioctls.h
+++ b/include/xeniface_ioctls.h
@@ -360,4 +360,13 @@ typedef struct _XENIFACE_SUSPEND_REGISTER_OUT {
#define IOCTL_XENIFACE_SUSPEND_DEREGISTER \
CTL_CODE(FILE_DEVICE_UNKNOWN, 0x832, METHOD_BUFFERED, FILE_ANY_ACCESS)
+/*! \brief Gets the current time.
+
+ Input: None
+
+ Output: LARGE_INTEGER
+*/
+#define IOCTL_XENIFACE_SHAREDINFO_GET_TIME \
+ CTL_CODE(FILE_DEVICE_UNKNOWN, 0x840, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
#endif // _XENIFACE_IOCTLS_H_
diff --git a/src/xeniface/ioctl_sharedinfo.c b/src/xeniface/ioctl_sharedinfo.c
new file mode 100644
index 0000000..c9dfe65
--- /dev/null
+++ b/src/xeniface/ioctl_sharedinfo.c
@@ -0,0 +1,68 @@
+/* Copyright (c) Citrix Systems Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms,
+ * with or without modification, are permitted provided
+ * that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer in the documentation and/or other
+ * materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "driver.h"
+#include "ioctls.h"
+#include "xeniface_ioctls.h"
+#include "log.h"
+
+DECLSPEC_NOINLINE
+NTSTATUS
+IoctlSharedInfoGetTime(
+ __in PXENIFACE_FDO Fdo,
+ __in PCHAR Buffer,
+ __in ULONG InLen,
+ __in ULONG OutLen,
+ __out PULONG_PTR Info
+ )
+{
+ NTSTATUS status;
+ PLARGE_INTEGER Value;
+
+ status = STATUS_INVALID_BUFFER_SIZE;
+ if (InLen != 0)
+ goto fail1;
+
+ if (OutLen != sizeof(LARGE_INTEGER))
+ goto fail2;
+
+ Value = (PLARGE_INTEGER)Buffer;
+ *Value = XENBUS_SHARED_INFO(GetTime, &Fdo->SharedInfoInterface);
+ *Info = (ULONG_PTR)sizeof(LARGE_INTEGER);
+
+ return STATUS_SUCCESS;
+
+fail2:
+ XenIfaceDebugPrint(ERROR, "Fail2\n");
+fail1:
+ XenIfaceDebugPrint(ERROR, "Fail1 (%08x)\n", status);
+ return status;
+}
diff --git a/src/xeniface/ioctls.c b/src/xeniface/ioctls.c
index 2df299c..7092a56 100644
--- a/src/xeniface/ioctls.c
+++ b/src/xeniface/ioctls.c
@@ -257,6 +257,12 @@ XenIfaceIoctl(
status = IoctlSuspendDeregister(Fdo, Buffer, InLen, OutLen,
Stack->FileObject);
break;
+ // sharedinfo
+ case IOCTL_XENIFACE_SHAREDINFO_GET_TIME:
+ status = IoctlSharedInfoGetTime(Fdo, Buffer, InLen, OutLen,
&Irp->IoStatus.Information);
+ break;
+
+
default:
status = STATUS_INVALID_DEVICE_REQUEST;
break;
diff --git a/src/xeniface/ioctls.h b/src/xeniface/ioctls.h
index 7dd34ee..d06f6b5 100644
--- a/src/xeniface/ioctls.h
+++ b/src/xeniface/ioctls.h
@@ -409,5 +409,14 @@ SuspendFreeEvent(
__inout PXENIFACE_SUSPEND_CONTEXT Context
);
+NTSTATUS
+IoctlSharedInfoGetTime(
+ __in PXENIFACE_FDO Fdo,
+ __in PCHAR Buffer,
+ __in ULONG InLen,
+ __in ULONG OutLen,
+ __out PULONG_PTR Info
+ );
+
#endif // _IOCTLS_H_
diff --git a/vs2012/xeniface/xeniface.vcxproj b/vs2012/xeniface/xeniface.vcxproj
index ff70eb0..bb344e4 100644
--- a/vs2012/xeniface/xeniface.vcxproj
+++ b/vs2012/xeniface/xeniface.vcxproj
@@ -79,6 +79,7 @@
<ClCompile Include="..\..\src\xeniface\fdo.c" />
<ClCompile Include="..\..\src\xeniface\registry.c" />
<ClCompile Include="..\..\src\xeniface\thread.c" />
+ <ClCompile Include="..\..\src\xeniface\ioctl_sharedinfo.c" />
<ClCompile Include="..\..\src\xeniface\ioctl_suspend.c" />
<ClCompile Include="..\..\src\xeniface\ioctl_evtchn.c" />
<ClCompile Include="..\..\src\xeniface\ioctl_gnttab.c" />
diff --git a/vs2013/xeniface/xeniface.vcxproj b/vs2013/xeniface/xeniface.vcxproj
index 3a3a937..c6232e4 100644
--- a/vs2013/xeniface/xeniface.vcxproj
+++ b/vs2013/xeniface/xeniface.vcxproj
@@ -131,6 +131,7 @@
<ClCompile Include="..\..\src\xeniface\fdo.c" />
<ClCompile Include="..\..\src\xeniface\registry.c" />
<ClCompile Include="..\..\src\xeniface\thread.c" />
+ <ClCompile Include="..\..\src\xeniface\ioctl_sharedinfo.c" />
<ClCompile Include="..\..\src\xeniface\ioctl_suspend.c" />
<ClCompile Include="..\..\src\xeniface\ioctl_evtchn.c" />
<ClCompile Include="..\..\src\xeniface\ioctl_gnttab.c" />
--
1.9.4.msysgit.1
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