221 lines
5.7 KiB
C++
221 lines
5.7 KiB
C++
/* tty.h: shared tty info for cygwin
|
|
|
|
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. */
|
|
|
|
#ifndef _TTY_H
|
|
#define _TTY_H
|
|
/* tty tables */
|
|
|
|
#define INP_BUFFER_SIZE 256
|
|
#define OUT_BUFFER_SIZE 256
|
|
#define NTTYS 128
|
|
#define real_tty_attached(p) (CTTY_IS_VALID ((p)->ctty) && !iscons_dev ((p)->ctty))
|
|
|
|
/* Input/Output/ioctl events */
|
|
|
|
#define INPUT_AVAILABLE_EVENT "cygtty.input.avail"
|
|
#define OUTPUT_MUTEX "cygtty.output.mutex"
|
|
#define INPUT_MUTEX "cygtty.input.mutex"
|
|
#define PIPE_SW_MUTEX "cygtty.pipe_sw.mutex"
|
|
#define TTY_SLAVE_ALIVE "cygtty.slave_alive"
|
|
#define TTY_SLAVE_READING "cygtty.slave_reading"
|
|
|
|
#include <sys/termios.h>
|
|
|
|
#ifndef MIN_CTRL_C_SLOP
|
|
#define MIN_CTRL_C_SLOP 50
|
|
#endif
|
|
|
|
typedef void *HPCON;
|
|
|
|
#include "devices.h"
|
|
class tty_min
|
|
{
|
|
pid_t sid; /* Session ID of tty */
|
|
struct status_flags
|
|
{
|
|
unsigned initialized : 1; /* Set if tty is initialized */
|
|
} status;
|
|
|
|
public:
|
|
pid_t pgid;
|
|
bool output_stopped; /* FIXME: Maybe do this with a mutex someday? */
|
|
fh_devices ntty;
|
|
ULONGLONG last_ctrl_c; /* tick count of last ctrl-c */
|
|
bool is_console;
|
|
int last_sig;
|
|
|
|
IMPLEMENT_STATUS_FLAG (bool, initialized)
|
|
|
|
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;
|
|
|
|
void setntty (_major_t t, _minor_t n) {ntty = (fh_devices) FHDEV (t, n);}
|
|
dev_t getntty () const {return ntty;}
|
|
_minor_t get_minor () const {return device::minor (ntty);}
|
|
pid_t getpgid () const {return pgid;}
|
|
void setpgid (int pid);
|
|
int getsid () const {return sid;}
|
|
void setsid (pid_t tsid) {sid = tsid;}
|
|
void kill_pgrp (int, pid_t target_pgid = 0);
|
|
int is_orphaned_process_group (int);
|
|
const char *ttyname () __attribute (());
|
|
};
|
|
|
|
|
|
/* The name *nat* comes from 'native' which means non-cygwin
|
|
(native windows). They are used for non-cygwin process. */
|
|
|
|
class fhandler_pty_master;
|
|
|
|
class tty: public tty_min
|
|
{
|
|
HANDLE get_event (const char *fmt, PSECURITY_ATTRIBUTES sa,
|
|
BOOL manual_reset = FALSE);
|
|
public:
|
|
pid_t master_pid; /* PID of tty master process */
|
|
|
|
/* Transfer direction for fhandler_pty_slave::transfer_input() */
|
|
enum xfer_dir
|
|
{
|
|
to_cyg,
|
|
to_nat
|
|
};
|
|
enum cons_mode
|
|
{
|
|
restore, /* For restoring when exit from cygwin. */
|
|
cygwin, /* For cygwin apps */
|
|
native /* For native apps executed from cygwin. */
|
|
};
|
|
|
|
private:
|
|
HANDLE _from_master_nat;
|
|
HANDLE _from_master;
|
|
HANDLE _to_master_nat;
|
|
HANDLE _to_master;
|
|
HANDLE _to_slave_nat;
|
|
HANDLE _to_slave;
|
|
bool pcon_activated;
|
|
bool pcon_start;
|
|
pid_t pcon_start_pid;
|
|
bool switch_to_nat_pipe;
|
|
DWORD nat_pipe_owner_pid;
|
|
UINT term_code_page;
|
|
ULONGLONG fwd_last_time;
|
|
bool fwd_not_empty;
|
|
HANDLE h_pcon_write_pipe;
|
|
HANDLE h_pcon_condrv_reference;
|
|
HANDLE h_pcon_conhost_process;
|
|
HANDLE h_pcon_in;
|
|
HANDLE h_pcon_out;
|
|
bool pcon_cap_checked;
|
|
bool has_csi6n;
|
|
bool need_invisible_console;
|
|
pid_t invisible_console_pid;
|
|
UINT previous_code_page;
|
|
UINT previous_output_code_page;
|
|
bool master_is_running_as_service;
|
|
bool req_xfer_input;
|
|
xfer_dir pty_input_state;
|
|
bool mask_flusho;
|
|
bool discard_input;
|
|
bool stop_fwd_thread;
|
|
|
|
public:
|
|
HANDLE from_master_nat () const { return _from_master_nat; }
|
|
HANDLE from_master () const { return _from_master; }
|
|
HANDLE to_master_nat () const { return _to_master_nat; }
|
|
HANDLE to_master () const { return _to_master; }
|
|
HANDLE to_slave_nat () const { return _to_slave_nat; }
|
|
HANDLE to_slave () const { return _to_slave; }
|
|
void set_from_master_nat (HANDLE h) { _from_master_nat = h; }
|
|
void set_from_master (HANDLE h) { _from_master = h; }
|
|
void set_to_master_nat (HANDLE h) { _to_master_nat = h; }
|
|
void set_to_master (HANDLE h) { _to_master = h; }
|
|
void set_to_slave_nat (HANDLE h) { _to_slave_nat = h; }
|
|
void set_to_slave (HANDLE h) { _to_slave = h; }
|
|
|
|
int read_retval;
|
|
bool was_opened; /* True if opened at least once. */
|
|
int column; /* Current Column */
|
|
|
|
void init ();
|
|
HANDLE open_inuse (ACCESS_MASK access);
|
|
HANDLE create_inuse (PSECURITY_ATTRIBUTES);
|
|
bool slave_alive ();
|
|
HANDLE open_mutex (const char *mutex, ACCESS_MASK access);
|
|
inline HANDLE open_output_mutex (ACCESS_MASK access)
|
|
{ return open_mutex (OUTPUT_MUTEX, access); }
|
|
inline HANDLE open_input_mutex (ACCESS_MASK access)
|
|
{ return open_mutex (INPUT_MUTEX, access); }
|
|
bool exists ();
|
|
bool not_allocated (HANDLE&, HANDLE&);
|
|
void set_master_ctl_closed () {master_pid = -1;}
|
|
static void create_master (int);
|
|
static void init_session ();
|
|
void wait_fwd ();
|
|
bool pty_input_state_eq (xfer_dir x) { return pty_input_state == x; }
|
|
bool nat_fg (pid_t pgid);
|
|
friend class fhandler_pty_common;
|
|
friend class fhandler_pty_master;
|
|
friend class fhandler_pty_slave;
|
|
friend class tty_min;
|
|
friend class fhandler_console;
|
|
};
|
|
|
|
class tty_list
|
|
{
|
|
tty ttys[NTTYS];
|
|
static HANDLE mutex;
|
|
|
|
public:
|
|
tty * operator [](int n) {return ttys + device::minor (n);}
|
|
int allocate (HANDLE& r, HANDLE& w); /* allocate a pty */
|
|
int connect (int);
|
|
void init ();
|
|
tty_min *get_cttyp ();
|
|
int attach (int n);
|
|
static void init_session ();
|
|
friend class lock_ttys;
|
|
};
|
|
|
|
class lock_ttys
|
|
{
|
|
bool release_me;
|
|
public:
|
|
lock_ttys (DWORD = INFINITE);
|
|
static void release ();
|
|
void dont_release () {release_me = false;}
|
|
~lock_ttys ()
|
|
{
|
|
if (release_me)
|
|
release ();
|
|
}
|
|
};
|
|
|
|
extern "C" int ttyslot (void);
|
|
|
|
/* Console stuff */
|
|
#define MAX_CONS_DEV 128
|
|
#define CONS_SCAN_UNUSED (-1)
|
|
|
|
#endif /*_TTY_H*/
|