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OpenSCManager waits for services.exe to initialize
svn path=/trunk/; revision=3295
This commit is contained in:
Jurgen van Gael
parent
57a74268f7
commit
3ce45b038f
1 changed files with 106 additions and 107 deletions
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@ -1,4 +1,4 @@
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/* $Id: scm.c,v 1.9 2002/07/20 13:31:34 ekohl Exp $
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/* $Id: scm.c,v 1.10 2002/07/23 08:16:05 jvangael Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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@ -407,117 +407,116 @@ OpenSCManagerA(LPCSTR lpMachineName,
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/**********************************************************************
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* OpenSCManagerW
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*/
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SC_HANDLE STDCALL
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OpenSCManagerW(LPCWSTR lpMachineName,
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LPCWSTR lpDatabaseName,
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DWORD dwDesiredAccess)
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SC_HANDLE STDCALL OpenSCManagerW(LPCWSTR lpMachineName,
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LPCWSTR lpDatabaseName,
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DWORD dwDesiredAccess)
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{
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HANDLE hPipe;
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DWORD dwMode;
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BOOL fSuccess;
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LPWSTR lpszPipeName = L"\\\\.\\pipe\\Ntsvcs";
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if (lpMachineName == NULL || wcslen(lpMachineName) == 0)
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{
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if (lpDatabaseName != NULL && wcscmp(lpDatabaseName, SERVICES_ACTIVE_DATABASEW) != 0)
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{
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return(NULL);
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}
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HANDLE hPipe;
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DWORD dwMode;
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DWORD dwWait;
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BOOL fSuccess;
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HANDLE hStartEvent;
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LPWSTR lpszPipeName = L"\\\\.\\pipe\\Ntsvcs";
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// Try to open a named pipe; wait for it, if necessary
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while (1)
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{
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hPipe = CreateFileW(
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lpszPipeName, // pipe name
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dwDesiredAccess,
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0, // no sharing
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NULL, // no security attributes
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OPEN_EXISTING, // opens existing pipe
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0, // default attributes
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NULL); // no template file
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if(lpMachineName == NULL || wcslen(lpMachineName) == 0)
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{
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if(lpDatabaseName != NULL && wcscmp(lpDatabaseName, SERVICES_ACTIVE_DATABASEW) != 0)
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{ return(NULL); }
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// Break if the pipe handle is valid
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if (hPipe != INVALID_HANDLE_VALUE)
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break;
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// Exit if an error other than ERROR_PIPE_BUSY occurs
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if (GetLastError() != ERROR_PIPE_BUSY)
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{
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return(NULL);
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}
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// All pipe instances are busy, so wait for 20 seconds
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if (!WaitNamedPipeW(lpszPipeName, 20000))
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{
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return(NULL);
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}
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}
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// The pipe connected; change to message-read mode
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dwMode = PIPE_READMODE_MESSAGE;
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fSuccess = SetNamedPipeHandleState(
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hPipe, // pipe handle
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&dwMode, // new pipe mode
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NULL, // don't set maximum bytes
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NULL); // don't set maximum time
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if (!fSuccess)
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{
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CloseHandle(hPipe);
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return(NULL);
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}
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// Only connect to scm when event "SvcctrlStartEvent_A3725DX" is signaled
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hStartEvent = OpenEvent(SYNCHRONIZE, FALSE, _T("SvcctrlStartEvent_A3725DX"));
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if(hStartEvent == NULL)
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{
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SetLastError(ERROR_DATABASE_DOES_NOT_EXIST);
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return (NULL);
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}
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dwWait = WaitForSingleObject(hStartEvent, INFINITE);
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if(dwWait == WAIT_FAILED)
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{
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SetLastError(ERROR_ACCESS_DENIED);
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return (NULL);
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}
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CloseHandle(hStartEvent);
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// Try to open a named pipe; wait for it, if necessary
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while(1)
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{
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hPipe = CreateFileW(lpszPipeName, // pipe name
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dwDesiredAccess,
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0, // no sharing
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NULL, // no security attributes
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OPEN_EXISTING, // opens existing pipe
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0, // default attributes
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NULL); // no template file
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// Break if the pipe handle is valid
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if(hPipe != INVALID_HANDLE_VALUE)
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break;
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// Exit if an error other than ERROR_PIPE_BUSY occurs
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if(GetLastError()!= ERROR_PIPE_BUSY)
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{ return(NULL); }
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// All pipe instances are busy, so wait for 20 seconds
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if(!WaitNamedPipeW(lpszPipeName, 20000))
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{ return(NULL); }
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}
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// The pipe connected; change to message-read mode
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dwMode = PIPE_READMODE_MESSAGE;
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fSuccess = SetNamedPipeHandleState(
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hPipe, // pipe handle
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&dwMode, // new pipe mode
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NULL, // don't set maximum bytes
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NULL); // don't set maximum time
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if(!fSuccess)
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{
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CloseHandle(hPipe);
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return(NULL);
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}
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#if 0
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// Send a message to the pipe server
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lpvMessage = (argc > 1) ? argv[1] : "default message";
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fSuccess = WriteFile(
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hPipe, // pipe handle
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lpvMessage, // message
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strlen(lpvMessage) + 1, // message length
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&cbWritten, // bytes written
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NULL); // not overlapped
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if (!fSuccess)
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{
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CloseHandle(hPipe);
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return(NULL);
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}
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do
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{
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// Read from the pipe
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fSuccess = ReadFile(
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hPipe, // pipe handle
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chBuf, // buffer to receive reply
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512, // size of buffer
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&cbRead, // number of bytes read
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NULL); // not overlapped
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if (! fSuccess && GetLastError() != ERROR_MORE_DATA)
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break;
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// Reply from the pipe is written to STDOUT.
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if (!WriteFile(GetStdHandle(STD_OUTPUT_HANDLE),
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chBuf, cbRead, &cbWritten, NULL))
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{
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break;
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}
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} while (!fSuccess); // repeat loop if ERROR_MORE_DATA
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//CloseHandle(hPipe);
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// Send a message to the pipe server
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lpvMessage = (argc > 1) ? argv[1] : "default message";
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fSuccess = WriteFile(
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hPipe, // pipe handle
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lpvMessage, // message
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strlen(lpvMessage) + 1, // message length
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&cbWritten, // bytes written
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NULL); // not overlapped
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if(!fSuccess)
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{
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CloseHandle(hPipe);
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return(NULL);
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}
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do
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{
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// Read from the pipe
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fSuccess = ReadFile(
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hPipe, // pipe handle
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chBuf, // buffer to receive reply
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512, // size of buffer
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&cbRead, // number of bytes read
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NULL); // not overlapped
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if(! fSuccess && GetLastError() != ERROR_MORE_DATA)
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break;
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// Reply from the pipe is written to STDOUT.
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if(!WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), chBuf, cbRead, &cbWritten, NULL))
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break;
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} while(!fSuccess); // repeat loop if ERROR_MORE_DATA
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//CloseHandle(hPipe);
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#endif
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return(hPipe);
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}
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else
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{
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/* FIXME: Connect to remote SCM */
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return(NULL);
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}
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return(hPipe);
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}
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else
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{
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/* FIXME: Connect to remote SCM */
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return(NULL);
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}
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}
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