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/* tty.h: shared tty info for cygwin
Copyright 2000, 2001, 2002 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
/* tty tables */
#define INP_BUFFER_SIZE 256
#define OUT_BUFFER_SIZE 256
#define NTTYS 128
#define real_tty_attached(p) ((p)->ctty >= 0 && (p)->ctty != TTY_CONSOLE)
/* Input/Output/ioctl events */
#define OUTPUT_DONE_EVENT "cygtty%d.output.done"
#define IOCTL_REQUEST_EVENT "cygtty%d.ioctl.request"
#define IOCTL_DONE_EVENT "cygtty%d.ioctl.done"
#define RESTART_OUTPUT_EVENT "cygtty%d.output.restart"
#define INPUT_AVAILABLE_EVENT "cygtty%d.input.avail"
#define OUTPUT_MUTEX "cygtty%d.output.mutex"
#define INPUT_MUTEX "cygtty%d.input.mutex"
#define TTY_SLAVE_ALIVE "cygtty%x.slave_alive"
#define TTY_MASTER_ALIVE "cygtty%x.master_alive"
#include <sys/termios.h>
enum
{
TTY_INITIALIZED = 1, /* Set if tty is initialized */
TTY_RSTCONS = 2 /* Set if console needs to be set to "non-cooked" */
};
#define TTYISSETF(x) __ISSETF (tc, x, TTY)
#define TTYSETF(x) __SETF (tc, x, TTY)
#define TTYCLEARF(x) __CLEARF (tc, x, TTY)
#define TTYCONDSETF(n, x) __CONDSETF(n, tc, x, TTY)
#ifndef MIN_CTRL_C_SLOP
#define MIN_CTRL_C_SLOP 50
#endif
class tty_min
{
pid_t sid; /* Session ID of tty */
public:
DWORD status;
pid_t pgid;
int output_stopped;
int ntty;
DWORD last_ctrl_c; // tick count of last ctrl-c
tty_min (int t = -1, pid_t s = -1) : sid (s), ntty (t) {}
void setntty (int n) {ntty = n;}
pid_t getpgid () {return pgid;}
void setpgid (int pid) {pgid = pid;}
int getsid () {return sid;}
void setsid (pid_t tsid) {sid = tsid;}
void set_ctty (int ttynum, int flags);
void kill_pgrp (int sig);
struct termios ti;
struct winsize winsize;
/* ioctl requests buffer */
int cmd;
union
{
struct termios termios;
struct winsize winsize;
int value;
pid_t pid;
} arg;
/* XXX_retval variables holds master's completion codes. Error are stored as
* -ERRNO
*/
int ioctl_retval;
int write_error;
};
class fhandler_pty_master;
class tty: public tty_min
{
HANDLE get_event (const char *fmt, BOOL manual_reset = FALSE)
__attribute__ ((regparm (2)));
public:
HWND hwnd; /* Console window handle tty belongs to */
DWORD master_pid; /* Win32 PID of tty master process */
HANDLE from_master, to_slave;
HANDLE from_slave, to_master;
int read_retval;
BOOL was_opened; /* True if opened at least once. */
void init ();
HANDLE create_inuse (const char *);
BOOL common_init (fhandler_pty_master *);
BOOL alive (const char *fmt);
BOOL slave_alive ();
BOOL master_alive ();
HWND gethwnd () {return hwnd;}
void sethwnd (HWND wnd) {hwnd = wnd;}
int make_pipes (fhandler_pty_master *ptym);
HANDLE open_output_mutex ()
{
char buf[80];
__small_sprintf (buf, OUTPUT_MUTEX, ntty);
return OpenMutex (MUTEX_ALL_ACCESS, TRUE, buf);
}
HANDLE open_input_mutex ()
{
char buf[80];
__small_sprintf (buf, INPUT_MUTEX, ntty);
return OpenMutex (MUTEX_ALL_ACCESS, TRUE, buf);
}
BOOL exists ()
{
HANDLE h = open_output_mutex ();
if (h)
{
CloseHandle (h);
return 1;
}
return slave_alive ();
}
};
class tty_list
{
tty ttys[NTTYS];
public:
tty * operator [](int n) {return ttys + n;}
int allocate_tty (int n); /* n non zero if allocate a tty, pty otherwise */
int connect_tty (int);
void terminate ();
void init ();
tty_min *get_tty (int n);
};
void __stdcall tty_init ();
void __stdcall tty_terminate ();
int __stdcall attach_tty (int);
void __stdcall create_tty_master (int);
extern "C" int ttyslot (void);
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