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106 lines
2.8 KiB
106 lines
2.8 KiB
/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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tracelib.c
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Abstract:
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Private trace libraries and stubs that allows user-mode to reside in NTDLL.
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Author:
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15-Aug-2000 JeePang
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Revision History:
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--*/
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <windows.h>
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#include "tracelib.h"
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#include "trcapi.h"
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HANDLE BaseNamedObjectDirectory;
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HANDLE
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EtwpCreateFile(
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LPCWSTR lpFileName,
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DWORD dwDesiredAccess,
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DWORD dwShareMode,
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DWORD dwCreationDisposition,
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DWORD dwCreateFlags
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)
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{
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UNICODE_STRING FileName;
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RTL_RELATIVE_NAME_U RelativeName;
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PVOID FreeBuffer;
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OBJECT_ATTRIBUTES ObjectAttributes;
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IO_STATUS_BLOCK Iosb;
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NTSTATUS Status;
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HANDLE FileHandle = INVALID_HANDLE_VALUE;
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SECURITY_QUALITY_OF_SERVICE SQos;
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RtlInitUnicodeString(&FileName, lpFileName);
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if (!RtlDosPathNameToRelativeNtPathName_U(
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lpFileName,
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&FileName,
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NULL,
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&RelativeName)) {
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EtwpSetDosError(ERROR_PATH_NOT_FOUND);
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return INVALID_HANDLE_VALUE;
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}
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FreeBuffer = FileName.Buffer;
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if (RelativeName.RelativeName.Length) {
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FileName = RelativeName.RelativeName;
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}
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else {
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RelativeName.ContainingDirectory = NULL;
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}
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InitializeObjectAttributes(
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&ObjectAttributes,
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&FileName,
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OBJ_CASE_INSENSITIVE,
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RelativeName.ContainingDirectory,
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NULL
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);
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SQos.ContextTrackingMode = SECURITY_DYNAMIC_TRACKING;
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SQos.ImpersonationLevel = SecurityImpersonation;
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SQos.EffectiveOnly = TRUE;
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SQos.Length = sizeof(SECURITY_QUALITY_OF_SERVICE);
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ObjectAttributes.SecurityQualityOfService = &SQos;
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Status = NtCreateFile(
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&FileHandle,
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(ACCESS_MASK) dwDesiredAccess
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| SYNCHRONIZE | FILE_READ_ATTRIBUTES,
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&ObjectAttributes,
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&Iosb,
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NULL,
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FILE_ATTRIBUTE_NORMAL
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& (FILE_ATTRIBUTE_VALID_FLAGS & ~FILE_ATTRIBUTE_DIRECTORY),
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dwShareMode,
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dwCreationDisposition,
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dwCreateFlags | FILE_SYNCHRONOUS_IO_NONALERT,
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NULL,
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0);
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if (!NT_SUCCESS(Status)) {
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if (Status == STATUS_OBJECT_NAME_COLLISION) {
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EtwpSetDosError(ERROR_FILE_EXISTS);
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}
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else {
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EtwpSetDosError(EtwpNtStatusToDosError(Status));
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}
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FileHandle = INVALID_HANDLE_VALUE;
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}
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RtlReleaseRelativeName(&RelativeName);
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if (lpFileName != FreeBuffer) {
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RtlFreeHeap(RtlProcessHeap(), 0, FreeBuffer);
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}
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return FileHandle;
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}
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