142 lines
2.7 KiB
C
142 lines
2.7 KiB
C
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/*++
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Copyright (c) 1991 Microsoft Corporation
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Module Name:
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openstrm.c
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Abstract:
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This module implements the STREAMS APIs, s_open() and OpenStream().
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Author:
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Sam Patton (sampa) November, 1991
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Eric Chin (ericc) July 17, 1992
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Revision History:
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--*/
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#include "common.h"
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HANDLE
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s_open(
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IN char *path,
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IN int oflag,
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IN int ignored
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)
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/*++
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Routine Description:
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This function opens a stream.
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Arguments:
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path - path to the STREAMS driver
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oflag - currently ignored. In the future, O_NONBLOCK will be
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relevant.
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ignored - not used
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Return Value:
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An NT handle for the stream, or INVALID_HANDLE_VALUE if unsuccessful.
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--*/
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{
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HANDLE StreamHandle;
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OBJECT_ATTRIBUTES ObjectAttributes;
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IO_STATUS_BLOCK IoStatusBlock;
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STRING name_string;
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UNICODE_STRING uc_name_string;
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PFILE_FULL_EA_INFORMATION EaBuffer;
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char Buffer[sizeof(FILE_FULL_EA_INFORMATION) + NORMAL_STREAM_EA_LENGTH + 1];
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NTSTATUS Status;
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RtlInitString(&name_string, path);
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RtlAnsiStringToUnicodeString(&uc_name_string, &name_string, TRUE);
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InitializeObjectAttributes(
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&ObjectAttributes,
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&uc_name_string,
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OBJ_CASE_INSENSITIVE,
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(HANDLE) NULL,
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(PSECURITY_DESCRIPTOR) NULL
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);
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EaBuffer = (PFILE_FULL_EA_INFORMATION) Buffer;
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EaBuffer->NextEntryOffset = 0;
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EaBuffer->Flags = 0;
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EaBuffer->EaNameLength = NORMAL_STREAM_EA_LENGTH;
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EaBuffer->EaValueLength = 0;
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RtlMoveMemory(
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EaBuffer->EaName,
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NormalStreamEA,
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NORMAL_STREAM_EA_LENGTH + 1);
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Status =
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NtCreateFile(
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&StreamHandle,
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SYNCHRONIZE | FILE_READ_DATA | FILE_WRITE_DATA,
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&ObjectAttributes,
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&IoStatusBlock,
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NULL,
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FILE_ATTRIBUTE_NORMAL,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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FILE_OPEN_IF,
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0,
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EaBuffer,
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sizeof(FILE_FULL_EA_INFORMATION) - 1 +
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EaBuffer->EaNameLength + 1);
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RtlFreeUnicodeString(&uc_name_string);
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if (Status != STATUS_SUCCESS) {
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SetLastError(MapNtToPosixStatus(Status));
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return(INVALID_HANDLE_VALUE);
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} else {
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return(StreamHandle);
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}
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} // s_open
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HANDLE
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OpenStream(
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IN char *AdapterName
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)
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/*++
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Routine Description:
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This function is used by the TCP/IP Utilities to open STREAMS drivers.
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It was exported by the winstrm.dll included in the July, 1992 PDC
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release. Hence, it will continue to be exported by winstrm.dll.
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Arguments:
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AdapterName - path of the STREAMS driver
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Return Value:
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An NT handle, or INVALID_HANDLE_VALUE if unsuccessful.
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--*/
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{
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return( s_open(AdapterName, 2, 0) );
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} // OpenStream
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