mirror of
https://github.com/reactos/reactos.git
synced 2024-10-31 11:56:26 +00:00
4f0b8d3db0
svn path=/branches/ntvdm/; revision=59241
209 lines
5.6 KiB
C
209 lines
5.6 KiB
C
/*
|
|
* COPYRIGHT: See COPYING in the top level directory
|
|
* PROJECT: ReactOS system libraries
|
|
* FILE: lib/kernel32/file/mailslot.c
|
|
* PURPOSE: Mailslot functions
|
|
* PROGRAMMER: Ariadne ( ariadne@xs4all.nl)
|
|
* UPDATE HISTORY:
|
|
*/
|
|
|
|
/* INCLUDES *******************************************************************/
|
|
|
|
#include <k32.h>
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
/* FUNCTIONS ******************************************************************/
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
HANDLE
|
|
WINAPI
|
|
CreateMailslotA(IN LPCSTR lpName,
|
|
IN DWORD nMaxMessageSize,
|
|
IN DWORD lReadTimeout,
|
|
IN LPSECURITY_ATTRIBUTES lpSecurityAttributes)
|
|
{
|
|
/* Call the W(ide) function */
|
|
ConvertWin32AnsiObjectApiToUnicodeApi2(Mailslot, lpName, nMaxMessageSize, lReadTimeout, lpSecurityAttributes);
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
HANDLE
|
|
WINAPI
|
|
CreateMailslotW(IN LPCWSTR lpName,
|
|
IN DWORD nMaxMessageSize,
|
|
IN DWORD lReadTimeout,
|
|
IN LPSECURITY_ATTRIBUTES lpSecurityAttributes)
|
|
{
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
UNICODE_STRING MailslotName;
|
|
HANDLE MailslotHandle;
|
|
NTSTATUS Status;
|
|
BOOLEAN Result;
|
|
LARGE_INTEGER DefaultTimeOut;
|
|
IO_STATUS_BLOCK Iosb;
|
|
ULONG Attributes = OBJ_CASE_INSENSITIVE;
|
|
PSECURITY_DESCRIPTOR SecurityDescriptor = NULL;
|
|
|
|
Result = RtlDosPathNameToNtPathName_U(lpName, &MailslotName, NULL, NULL);
|
|
if (!Result)
|
|
{
|
|
SetLastError(ERROR_PATH_NOT_FOUND);
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
DPRINT("Mailslot name: %wZ\n", &MailslotName);
|
|
|
|
if (lpSecurityAttributes)
|
|
{
|
|
SecurityDescriptor = lpSecurityAttributes->lpSecurityDescriptor;
|
|
if(lpSecurityAttributes->bInheritHandle) Attributes |= OBJ_INHERIT;
|
|
}
|
|
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
&MailslotName,
|
|
Attributes,
|
|
NULL,
|
|
SecurityDescriptor);
|
|
|
|
if (lReadTimeout == MAILSLOT_WAIT_FOREVER)
|
|
{
|
|
/* Set the max */
|
|
DefaultTimeOut.QuadPart = 0xFFFFFFFFFFFFFFFFLL;
|
|
}
|
|
else
|
|
{
|
|
/* Convert to NT format */
|
|
DefaultTimeOut.QuadPart = UInt32x32To64(-10000, lReadTimeout);
|
|
}
|
|
|
|
Status = NtCreateMailslotFile(&MailslotHandle,
|
|
GENERIC_READ | SYNCHRONIZE | WRITE_DAC,
|
|
&ObjectAttributes,
|
|
&Iosb,
|
|
FILE_WRITE_THROUGH,
|
|
0,
|
|
nMaxMessageSize,
|
|
&DefaultTimeOut);
|
|
|
|
if ((Status == STATUS_INVALID_DEVICE_REQUEST) ||
|
|
(Status == STATUS_NOT_SUPPORTED))
|
|
{
|
|
Status = STATUS_OBJECT_NAME_INVALID;
|
|
}
|
|
|
|
RtlFreeHeap(RtlGetProcessHeap(), 0, MailslotName.Buffer);
|
|
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("NtCreateMailslot failed (Status %x)!\n", Status);
|
|
BaseSetLastNTError(Status);
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
return MailslotHandle;
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
BOOL
|
|
WINAPI
|
|
GetMailslotInfo(IN HANDLE hMailslot,
|
|
IN LPDWORD lpMaxMessageSize,
|
|
IN LPDWORD lpNextSize,
|
|
IN LPDWORD lpMessageCount,
|
|
IN LPDWORD lpReadTimeout)
|
|
{
|
|
FILE_MAILSLOT_QUERY_INFORMATION Buffer;
|
|
IO_STATUS_BLOCK Iosb;
|
|
NTSTATUS Status;
|
|
LARGE_INTEGER Timeout;
|
|
|
|
Status = NtQueryInformationFile(hMailslot,
|
|
&Iosb,
|
|
&Buffer,
|
|
sizeof(FILE_MAILSLOT_QUERY_INFORMATION),
|
|
FileMailslotQueryInformation);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("NtQueryInformationFile failed (Status %x)!\n", Status);
|
|
BaseSetLastNTError(Status);
|
|
return FALSE;
|
|
}
|
|
|
|
if (lpMaxMessageSize) *lpMaxMessageSize = Buffer.MaximumMessageSize;
|
|
if (lpNextSize) *lpNextSize = Buffer.NextMessageSize;
|
|
if (lpMessageCount) *lpMessageCount = Buffer.MessagesAvailable;
|
|
|
|
if (lpReadTimeout)
|
|
{
|
|
if (Buffer.ReadTimeout.QuadPart == 0xFFFFFFFFFFFFFFFFLL)
|
|
{
|
|
*lpReadTimeout = MAILSLOT_WAIT_FOREVER;
|
|
}
|
|
else
|
|
{
|
|
Timeout.QuadPart = -Buffer.ReadTimeout.QuadPart;
|
|
Timeout = RtlExtendedLargeIntegerDivide(Timeout, 10000, NULL);
|
|
if (Timeout.HighPart == 0)
|
|
{
|
|
*lpReadTimeout = Timeout.LowPart;
|
|
}
|
|
else
|
|
{
|
|
*lpReadTimeout = 0xFFFFFFFE;
|
|
}
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
BOOL
|
|
WINAPI
|
|
SetMailslotInfo(IN HANDLE hMailslot,
|
|
IN DWORD lReadTimeout)
|
|
{
|
|
FILE_MAILSLOT_SET_INFORMATION Buffer;
|
|
LARGE_INTEGER Timeout;
|
|
IO_STATUS_BLOCK Iosb;
|
|
NTSTATUS Status;
|
|
|
|
if (lReadTimeout == MAILSLOT_WAIT_FOREVER)
|
|
{
|
|
/* Set the max */
|
|
Timeout.QuadPart = 0xFFFFFFFFFFFFFFFFLL;
|
|
}
|
|
else
|
|
{
|
|
/* Convert to NT format */
|
|
Timeout.QuadPart = UInt32x32To64(-10000, lReadTimeout);
|
|
}
|
|
|
|
Buffer.ReadTimeout = &Timeout;
|
|
|
|
Status = NtSetInformationFile(hMailslot,
|
|
&Iosb,
|
|
&Buffer,
|
|
sizeof(FILE_MAILSLOT_SET_INFORMATION),
|
|
FileMailslotSetInformation);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("NtSetInformationFile failed (Status %x)!\n", Status);
|
|
BaseSetLastNTError(Status);
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* EOF */
|