[PATCH] ntoskrnl.exe: Implement ExUuidCreate().
Zhiyi Zhang
zzhang at codeweavers.com
Wed Feb 20 08:53:37 CST 2019
Signed-off-by: Zhiyi Zhang <zzhang at codeweavers.com>
---
dlls/ntoskrnl.exe/ntoskrnl.c | 33 +++++++++++++++++++++++++++++++++
dlls/ntoskrnl.exe/ntoskrnl.exe.spec | 2 +-
include/ddk/ntddk.h | 2 ++
3 files changed, 36 insertions(+), 1 deletion(-)
diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index 4b62660750..1d36620fc4 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -3983,3 +3983,36 @@ void WINAPI KeLeaveGuardedRegion(void)
{
FIXME("\n");
}
+
+/*************************************************************************
+ * ExUuidCreate (NTOSKRNL.@)
+ *
+ * Creates a 128bit UUID.
+ *
+ * RETURNS
+ *
+ * STATUS_SUCCESS if successful.
+ * RPC_NT_UUID_LOCAL_ONLY if UUID is only locally unique.
+ *
+ * NOTES
+ *
+ * Follows RFC 4122, section 4.4 (Algorithms for Creating a UUID from
+ * Truly Random or Pseudo-Random Numbers)
+ */
+NTSTATUS WINAPI ExUuidCreate(UUID *uuid)
+{
+ /* RtlGenRandom */
+ SystemFunction036(uuid, sizeof(*uuid));
+ /* Clear the version bits and set the version (4) */
+ uuid->Data3 &= 0x0fff;
+ uuid->Data3 |= (4 << 12);
+ /* Set the topmost bits of Data4 (clock_seq_hi_and_reserved) as
+ * specified in RFC 4122, section 4.4.
+ */
+ uuid->Data4[0] &= 0x3f;
+ uuid->Data4[0] |= 0x80;
+
+ TRACE("%s\n", debugstr_guid(uuid));
+
+ return STATUS_SUCCESS;
+}
diff --git a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
index d087422605..73ebbd91ef 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
+++ b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
@@ -185,7 +185,7 @@
@ stub ExSystemExceptionFilter
@ stdcall ExSystemTimeToLocalTime(ptr ptr) RtlSystemTimeToLocalTime
@ stub ExUnregisterCallback
-@ stub ExUuidCreate
+@ stdcall ExUuidCreate(ptr)
@ stub ExVerifySuite
@ stub ExWindowStationObjectType
@ stub Exi386InterlockedDecrementLong
diff --git a/include/ddk/ntddk.h b/include/ddk/ntddk.h
index 452e510fdc..fb8cacc188 100644
--- a/include/ddk/ntddk.h
+++ b/include/ddk/ntddk.h
@@ -202,7 +202,9 @@ typedef NTSTATUS (WINAPI *PIO_QUERY_DEVICE_ROUTINE)(PVOID,PUNICODE_STRING,INTERF
PKEY_VALUE_FULL_INFORMATION*,CONFIGURATION_TYPE,ULONG,PKEY_VALUE_FULL_INFORMATION*);
typedef void (NTAPI EXPAND_STACK_CALLOUT)(void*);
typedef EXPAND_STACK_CALLOUT *PEXPAND_STACK_CALLOUT;
+typedef GUID UUID;
+NTSTATUS WINAPI ExUuidCreate(UUID*);
NTSTATUS WINAPI IoQueryDeviceDescription(PINTERFACE_TYPE,PULONG,PCONFIGURATION_TYPE,PULONG,
PCONFIGURATION_TYPE,PULONG,PIO_QUERY_DEVICE_ROUTINE,PVOID);
void WINAPI IoRegisterDriverReinitialization(PDRIVER_OBJECT,PDRIVER_REINITIALIZE,PVOID);
--
2.15.2 (Apple Git-101.1)
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