Function Ext2OpenPipe

Ext2Mgr/Ext2Pipe.cpp:31–66

int Ext2StartSrv();

HANDLE Ext2OpenPipe(CHAR *PipeName)
{
    DWORD   rc;

    if (g_hPipe != NULL && g_hPipe != INVALID_HANDLE_VALUE) {
        return g_hPipe;
    }

retry:

    // open pipe (created by Ext2Srv)
    g_hPipe = CreateFile(PipeName,
                         GENERIC_READ | GENERIC_WRITE, 
                         0, NULL, OPEN_EXISTING, 0, NULL);
 
    // exit if the pipe handle is valid. 
    if (g_hPipe == INVALID_HANDLE_VALUE) {

         // exit if an error other than ERROR_PIPE_BUSY occurs. 
        rc = GetLastError(); 
        if (rc != ERROR_PIPE_BUSY) {
            return NULL;
        }
 
        // all pipe instances are busy, so wait for 20 seconds. 
        if (!WaitNamedPipe(PipeName, 20000)) { 
            return NULL;
        }

        Ext2StartSrv();

        goto retry;
    }

    return g_hPipe;
}

void Ext2ClosePipe()
{