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https://github.com/reactos/reactos.git
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92 lines
2 KiB
C
92 lines
2 KiB
C
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/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* PURPOSE: Interface to csrss
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* FILE: subsys/win32k/ntuser/csr.c
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* PROGRAMER: Ge van Geldorp (ge@gse.nl)
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*/
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#include <win32k.h>
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static HANDLE WindowsApiPort = NULL;
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PEPROCESS CsrProcess = NULL;
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NTSTATUS FASTCALL
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CsrInit(void)
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{
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NTSTATUS Status;
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UNICODE_STRING PortName;
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ULONG ConnectInfoLength;
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SECURITY_QUALITY_OF_SERVICE Qos;
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RtlInitUnicodeString(&PortName, L"\\Windows\\ApiPort");
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ConnectInfoLength = 0;
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Qos.Length = sizeof(Qos);
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Qos.ImpersonationLevel = SecurityDelegation;
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Qos.ContextTrackingMode = SECURITY_STATIC_TRACKING;
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Qos.EffectiveOnly = FALSE;
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Status = ZwConnectPort(&WindowsApiPort,
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&PortName,
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&Qos,
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NULL,
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NULL,
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NULL,
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NULL,
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&ConnectInfoLength);
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if (! NT_SUCCESS(Status))
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{
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return Status;
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}
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CsrProcess = PsGetCurrentProcess();
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return STATUS_SUCCESS;
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}
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NTSTATUS FASTCALL
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co_CsrNotify(PCSR_API_MESSAGE Request)
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{
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NTSTATUS Status;
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PEPROCESS OldProcess;
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if (NULL == CsrProcess)
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{
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return STATUS_INVALID_PORT_HANDLE;
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}
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Request->Header.u2.ZeroInit = 0;
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Request->Header.u1.s1.DataLength = sizeof(CSR_API_MESSAGE) - sizeof(PORT_MESSAGE);
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Request->Header.u1.s1.TotalLength = sizeof(CSR_API_MESSAGE);
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/* Switch to the process in which the WindowsApiPort handle is valid */
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OldProcess = PsGetCurrentProcess();
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if (CsrProcess != OldProcess)
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{
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KeAttachProcess(&CsrProcess->Pcb);
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}
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UserLeaveCo();
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Status = ZwRequestWaitReplyPort(WindowsApiPort,
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&Request->Header,
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&Request->Header);
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UserEnterCo();
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if (CsrProcess != OldProcess)
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{
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KeDetachProcess();
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}
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if (NT_SUCCESS(Status))
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{
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Status = Request->Status;
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}
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return Status;
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}
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/* EOF */
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