153 lines
3.6 KiB
C++
153 lines
3.6 KiB
C++
/* tty.h: shared tty info for cygwin
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Copyright 2000, 2001, 2002 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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/* tty tables */
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#define INP_BUFFER_SIZE 256
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#define OUT_BUFFER_SIZE 256
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#define NTTYS 128
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#define real_tty_attached(p) ((p)->ctty >= 0 && (p)->ctty != TTY_CONSOLE)
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/* Input/Output/ioctl events */
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#define OUTPUT_DONE_EVENT "cygtty%d.output.done"
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#define IOCTL_REQUEST_EVENT "cygtty%d.ioctl.request"
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#define IOCTL_DONE_EVENT "cygtty%d.ioctl.done"
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#define RESTART_OUTPUT_EVENT "cygtty%d.output.restart"
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#define INPUT_AVAILABLE_EVENT "cygtty%d.input.avail"
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#define OUTPUT_MUTEX "cygtty%d.output.mutex"
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#define INPUT_MUTEX "cygtty%d.input.mutex"
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#define TTY_SLAVE_ALIVE "cygtty%x.slave_alive"
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#define TTY_MASTER_ALIVE "cygtty%x.master_alive"
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#include <sys/termios.h>
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enum
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{
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TTY_INITIALIZED = 1, /* Set if tty is initialized */
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TTY_RSTCONS = 2 /* Set if console needs to be set to "non-cooked" */
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};
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#define TTYISSETF(x) __ISSETF (tc, x, TTY)
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#define TTYSETF(x) __SETF (tc, x, TTY)
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#define TTYCLEARF(x) __CLEARF (tc, x, TTY)
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#define TTYCONDSETF(n, x) __CONDSETF(n, tc, x, TTY)
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#ifndef MIN_CTRL_C_SLOP
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#define MIN_CTRL_C_SLOP 50
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#endif
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class tty_min
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{
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pid_t sid; /* Session ID of tty */
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public:
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DWORD status;
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pid_t pgid;
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int output_stopped;
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int ntty;
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DWORD last_ctrl_c; // tick count of last ctrl-c
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tty_min (int t = -1, pid_t s = -1) : sid (s), ntty (t) {}
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void setntty (int n) {ntty = n;}
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pid_t getpgid () {return pgid;}
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void setpgid (int pid) {pgid = pid;}
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int getsid () {return sid;}
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void setsid (pid_t tsid) {sid = tsid;}
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void kill_pgrp (int sig);
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struct termios ti;
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struct winsize winsize;
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/* ioctl requests buffer */
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int cmd;
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union
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{
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struct termios termios;
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struct winsize winsize;
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int value;
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pid_t pid;
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} arg;
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/* XXX_retval variables holds master's completion codes. Error are stored as
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* -ERRNO
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*/
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int ioctl_retval;
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int write_error;
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};
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class fhandler_pty_master;
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class tty: public tty_min
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{
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HANDLE get_event (const char *fmt, BOOL manual_reset = FALSE)
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__attribute__ ((regparm (3)));
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public:
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HWND hwnd; /* Console window handle tty belongs to */
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DWORD master_pid; /* Win32 PID of tty master process */
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HANDLE from_master, to_slave;
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HANDLE from_slave, to_master;
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int read_retval;
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bool was_opened; /* True if opened at least once. */
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void init ();
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HANDLE create_inuse (const char *);
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bool common_init (fhandler_pty_master *);
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bool alive (const char *fmt);
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bool slave_alive ();
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bool master_alive ();
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HWND gethwnd () {return hwnd;}
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void sethwnd (HWND wnd) {hwnd = wnd;}
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bool make_pipes (fhandler_pty_master *ptym);
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HANDLE open_output_mutex ()
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{
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char buf[80];
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__small_sprintf (buf, OUTPUT_MUTEX, ntty);
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return OpenMutex (MUTEX_ALL_ACCESS, TRUE, buf);
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}
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HANDLE open_input_mutex ()
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{
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char buf[80];
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__small_sprintf (buf, INPUT_MUTEX, ntty);
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return OpenMutex (MUTEX_ALL_ACCESS, TRUE, buf);
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}
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bool exists ()
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{
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HANDLE h = open_output_mutex ();
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if (h)
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{
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CloseHandle (h);
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return 1;
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}
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return slave_alive ();
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}
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};
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class tty_list
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{
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tty ttys[NTTYS];
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public:
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tty * operator [](int n) {return ttys + n;}
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int allocate_tty (int n); /* n non zero if allocate a tty, pty otherwise */
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int connect_tty (int);
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void terminate ();
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void init ();
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tty_min *get_tty (int n);
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};
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void __stdcall tty_init ();
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void __stdcall tty_terminate ();
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int __stdcall attach_tty (int);
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void __stdcall create_tty_master (int);
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extern "C" int ttyslot (void);
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