libwinpr/comm/comm.h

 
#ifndef WINPR_COMM_PRIVATE_H
#define WINPR_COMM_PRIVATE_H
 
#if defined(__linux__)
#define WINPR_HAVE_COMM_COUNTERS
#include <linux/serial.h>
#endif
 
#include <winpr/comm.h>
 
#include "../handle/handle.h"
#include <winpr/config.h>
 
#if defined(WINPR_HAVE_SYS_EVENTFD_H)
#include <sys/eventfd.h>
#endif
 
struct winpr_comm
{
  WINPR_HANDLE common;
 
  int fd;
 
  int fd_read;
  int fd_read_event; /* as of today, only used by _purge() */
  CRITICAL_SECTION ReadLock;
 
  int fd_write;
  int fd_write_event; /* as of today, only used by _purge() */
  CRITICAL_SECTION WriteLock;
 
  /* permissive mode on errors. If TRUE (default is FALSE)
   * CommDeviceIoControl always return TRUE.
   *
   * Not all features are supported yet and an error is then returned when
   * an application turns them on (e.g: i/o buffers > 4096). It appeared
   * though that devices and applications can be still functional on such
   * errors.
   *
   * see also: comm_ioctl.c
   *
   * FIXME: getting rid of this flag once all features supported.
   */
  BOOL permissive;
 
  SERIAL_DRIVER_ID serverSerialDriverId;
 
  COMMTIMEOUTS timeouts;
 
  CRITICAL_SECTION
  EventsLock; /* protects counters, WaitEventMask and PendingEvents */
#if defined(WINPR_HAVE_COMM_COUNTERS)
  struct serial_icounter_struct counters;
#endif
  ULONG WaitEventMask;
  ULONG PendingEvents;
 
  BYTE eventChar;
  /* NB: CloseHandle() has to free resources */
};
 
typedef struct winpr_comm WINPR_COMM;
 
#define SERIAL_EV_RXCHAR 0x0001
#define SERIAL_EV_RXFLAG 0x0002
#define SERIAL_EV_TXEMPTY 0x0004
#define SERIAL_EV_CTS 0x0008
#define SERIAL_EV_DSR 0x0010
#define SERIAL_EV_RLSD 0x0020
#define SERIAL_EV_BREAK 0x0040
#define SERIAL_EV_ERR 0x0080
#define SERIAL_EV_RING 0x0100
#define SERIAL_EV_PERR 0x0200
#define SERIAL_EV_RX80FULL 0x0400
#define SERIAL_EV_EVENT1 0x0800
#define SERIAL_EV_EVENT2 0x1000
#define SERIAL_EV_WINPR_WAITING 0x4000 /* bit today unused by other SERIAL_EV_* */
#define SERIAL_EV_WINPR_STOP 0x8000    /* bit today unused by other SERIAL_EV_* */
 
#define WINPR_PURGE_TXABORT 0x00000001 /* abort pending transmission */
#define WINPR_PURGE_RXABORT 0x00000002 /* abort pending reception */
 
void CommLog_Print(DWORD wlog_level, ...);
 
BOOL CommIsHandled(HANDLE handle);
BOOL CommIsHandleValid(HANDLE handle);
BOOL CommCloseHandle(HANDLE handle);
const HANDLE_CREATOR* GetCommHandleCreator(void);
 
#if defined(WINPR_HAVE_SYS_EVENTFD_H)
#ifndef WITH_EVENTFD_READ_WRITE
int eventfd_read(int fd, eventfd_t* value);
int eventfd_write(int fd, eventfd_t value);
#endif
#endif
 
#endif /* WINPR_COMM_PRIVATE_H */