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Diffstat (limited to 'winsup/cygwin/tty.cc')
-rw-r--r--winsup/cygwin/tty.cc396
1 files changed, 0 insertions, 396 deletions
diff --git a/winsup/cygwin/tty.cc b/winsup/cygwin/tty.cc
deleted file mode 100644
index 0991cd66d..000000000
--- a/winsup/cygwin/tty.cc
+++ /dev/null
@@ -1,396 +0,0 @@
-/* tty.cc
-
- Copyright 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2008, 2009,
- 2010 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. */
-
-#include "winsup.h"
-#include "miscfuncs.h"
-#include <unistd.h>
-#include <utmp.h>
-#include <sys/cygwin.h>
-#include "cygerrno.h"
-#include "security.h"
-#include "path.h"
-#include "fhandler.h"
-#include "dtable.h"
-#include "cygheap.h"
-#include "pinfo.h"
-#include "shared_info.h"
-
-extern fhandler_tty_master *tty_master;
-
-extern "C" int
-posix_openpt (int oflags)
-{
- return open ("/dev/ptmx", oflags);
-}
-
-extern "C" int
-grantpt (int fd)
-{
- return 0;
-}
-
-extern "C" int
-unlockpt (int fd)
-{
- return 0;
-}
-
-extern "C" int
-revoke (char *ttyname)
-{
- set_errno (ENOSYS);
- return -1;
-}
-
-extern "C" int
-ttyslot (void)
-{
- if (NOTSTATE (myself, PID_USETTY))
- return -1;
- return myself->ctty;
-}
-
-HANDLE NO_COPY tty_list::mutex = NULL;
-
-void __stdcall
-tty_list::init_session ()
-{
- char mutex_name[MAX_PATH];
- /* tty_list::mutex is used while searching for a tty slot. It's necessary
- while finding console window handle */
-
- char *name = shared_name (mutex_name, "tty_list::mutex", 0);
- if (!(mutex = CreateMutex (&sec_all_nih, FALSE, name)))
- api_fatal ("can't create tty_list::mutex '%s', %E", name);
- ProtectHandle (mutex);
-}
-
-void __stdcall
-tty::init_session ()
-{
- if (!myself->cygstarted && NOTSTATE (myself, PID_CYGPARENT))
- cygheap->fdtab.get_debugger_info ();
-
- if (NOTSTATE (myself, PID_USETTY))
- return;
- if (myself->ctty != -1)
- /* nothing to do */;
- else if (NOTSTATE (myself, PID_CYGPARENT))
- myself->ctty = cygwin_shared->tty.attach (myself->ctty);
- else
- return;
- if (myself->ctty == -1)
- termios_printf ("Can't attach to tty");
-}
-
-/* Create session's master tty */
-
-void __stdcall
-tty::create_master (int ttynum)
-{
- device ttym = *ttym_dev;
- ttym.setunit (ttynum); /* CGF FIXME device */
- tty_master = (fhandler_tty_master *) build_fh_dev (ttym);
- if (tty_master->init ())
- api_fatal ("can't create master tty");
- else
- {
- /* Log utmp entry */
- struct utmp our_utmp;
- DWORD len = sizeof our_utmp.ut_host;
-
- bzero ((char *) &our_utmp, sizeof (utmp));
- time (&our_utmp.ut_time);
- strncpy (our_utmp.ut_name, getlogin (), sizeof (our_utmp.ut_name));
- GetComputerName (our_utmp.ut_host, &len);
- __small_sprintf (our_utmp.ut_line, "tty%d", ttynum);
- if ((len = strlen (our_utmp.ut_line)) >= UT_IDLEN)
- len -= UT_IDLEN;
- else
- len = 0;
- strncpy (our_utmp.ut_id, our_utmp.ut_line + len, UT_IDLEN);
- our_utmp.ut_type = USER_PROCESS;
- our_utmp.ut_pid = myself->pid;
- myself->ctty = ttynum;
- login (&our_utmp);
- }
-}
-
-int __stdcall
-tty_list::attach (int num)
-{
- if (num != -1)
- {
- return connect (num);
- }
- if (NOTSTATE (myself, PID_USETTY))
- return -1;
- return allocate (true);
-}
-
-void
-tty_list::terminate ()
-{
- if (NOTSTATE (myself, PID_USETTY))
- return;
- int ttynum = myself->ctty;
-
- /* Keep master running till there are connected clients */
- if (ttynum != -1 && tty_master && ttys[ttynum].master_pid == myself->pid)
- {
- tty *t = ttys + ttynum;
- /* Wait for children which rely on tty handling in this process to
- go away */
- for (int i = 0; ; i++)
- {
- if (!t->slave_alive ())
- break;
- if (i >= 100)
- {
- small_printf ("waiting for children using tty%d to terminate\n",
- ttynum);
- i = 0;
- }
-
- Sleep (200);
- }
-
- lock_ttys here ();
- CloseHandle (tty_master->from_master);
- CloseHandle (tty_master->to_master);
-
- termios_printf ("tty %d master about to finish", ttynum);
- CloseHandle (tty_master->get_io_handle ());
- CloseHandle (tty_master->get_output_handle ());
-
- t->init ();
-
- char buf[20];
- __small_sprintf (buf, "tty%d", ttynum);
- logout (buf);
- }
-}
-
-int
-tty_list::connect (int ttynum)
-{
- if (ttynum < 0 || ttynum >= NTTYS)
- {
- termios_printf ("ttynum (%d) out of range", ttynum);
- return -1;
- }
- if (!ttys[ttynum].exists ())
- {
- termios_printf ("tty %d was not allocated", ttynum);
- return -1;
- }
-
- return ttynum;
-}
-
-void
-tty_list::init ()
-{
- for (int i = 0; i < NTTYS; i++)
- {
- ttys[i].init ();
- ttys[i].setntty (i);
- }
-}
-
-/* Search for tty class for our console. Allocate new tty if our process is
- the only cygwin process in the current console.
- Return tty number or -1 if error.
- If with_console == 0, just find a free tty.
- */
-int
-tty_list::allocate (bool with_console)
-{
- HWND console;
- int freetty = -1;
- HANDLE hmaster = NULL;
-
- lock_ttys here;
-
- if (!with_console)
- console = NULL;
- else if (!(console = GetConsoleWindow ()))
- {
- termios_printf ("Can't find console window");
- goto out;
- }
-
- /* Is a tty allocated for console? */
- for (int i = 0; i < NTTYS; i++)
- {
- if (!ttys[i].exists ())
- {
- if (freetty < 0) /* Scanning? */
- freetty = i; /* Yes. */
- if (!with_console) /* Do we want to attach this to a console? */
- break; /* No. We've got one. */
- }
-
- /* FIXME: Is this right? We can potentially query a "nonexistent"
- tty slot after falling through from the above? */
- if (with_console && ttys[i].gethwnd () == console)
- {
- termios_printf ("console %x already associated with tty%d",
- console, i);
- /* Is the master alive? */
- hmaster = OpenProcess (PROCESS_DUP_HANDLE, FALSE, ttys[i].master_pid);
- if (hmaster)
- {
- CloseHandle (hmaster);
- freetty = i;
- goto out;
- }
- /* Master is dead */
- freetty = i;
- break;
- }
- }
-
- /* There is no tty allocated to console; allocate the first free found */
- if (freetty == -1)
- goto out;
-
- tty *t;
- t = ttys + freetty;
- t->init ();
- t->setsid (-1);
- t->sethwnd (console);
-
-out:
- if (freetty < 0)
- system_printf ("No tty allocated");
- else if (!with_console)
- {
- termios_printf ("tty%d allocated", freetty);
- here.dont_release (); /* exit with mutex still held -- caller has more work to do */
- }
- else
- {
- termios_printf ("console %p associated with tty%d", console, freetty);
- if (!hmaster)
- tty::create_master (freetty);
- }
- return freetty;
-}
-
-bool
-tty::exists ()
-{
- /* Attempt to open the from-master side of the tty. If it is accessible
- then it exists although it may have been privileges to actually use it. */
- char pipename[sizeof("ttyNNNN-from-master")];
- __small_sprintf (pipename, "tty%d-from-master", ntty);
- HANDLE r, w;
- int res = fhandler_pipe::create_selectable (&sec_none_nih, r, w, 0, pipename);
- if (res)
- return true;
-
- CloseHandle (r);
- CloseHandle (w);
-
- HANDLE h = open_output_mutex (READ_CONTROL);
- if (h)
- {
- CloseHandle (h);
- return true;
- }
- return slave_alive ();
-}
-
-bool
-tty::slave_alive ()
-{
- HANDLE ev;
- if ((ev = open_inuse (READ_CONTROL)))
- CloseHandle (ev);
- return ev != NULL;
-}
-
-HANDLE
-tty::open_mutex (const char *mutex, ACCESS_MASK access)
-{
- char buf[MAX_PATH];
- shared_name (buf, mutex, ntty);
- return OpenMutex (access, TRUE, buf);
-}
-
-HANDLE
-tty::open_inuse (ACCESS_MASK access)
-{
- char buf[MAX_PATH];
- shared_name (buf, TTY_SLAVE_ALIVE, ntty);
- return OpenEvent (access, FALSE, buf);
-}
-
-HANDLE
-tty::create_inuse (PSECURITY_ATTRIBUTES sa)
-{
- HANDLE h;
- char buf[MAX_PATH];
-
- shared_name (buf, TTY_SLAVE_ALIVE, ntty);
- h = CreateEvent (sa, TRUE, FALSE, buf);
- termios_printf ("%s %p", buf, h);
- if (!h)
- termios_printf ("couldn't open inuse event, %E", buf);
- return h;
-}
-
-void
-tty::init ()
-{
- output_stopped = 0;
- setsid (0);
- pgid = 0;
- hwnd = NULL;
- was_opened = 0;
- master_pid = 0;
-}
-
-HANDLE
-tty::get_event (const char *fmt, PSECURITY_ATTRIBUTES sa, BOOL manual_reset)
-{
- HANDLE hev;
- char buf[MAX_PATH];
-
- shared_name (buf, fmt, ntty);
- if (!sa)
- sa = &sec_all;
- if (!(hev = CreateEvent (sa, manual_reset, FALSE, buf)))
- {
- termios_printf ("couldn't create %s", buf);
- set_errno (ENOENT); /* FIXME this can't be the right errno */
- return NULL;
- }
-
- termios_printf ("created event %s", buf);
- return hev;
-}
-
-lock_ttys::lock_ttys (DWORD howlong): release_me (true)
-{
- if (WaitForSingleObject (tty_list::mutex, howlong) == WAIT_FAILED)
- {
- termios_printf ("WFSO for mutex %p failed, %E", tty_list::mutex);
- release_me = false;
- }
-}
-
-void
-lock_ttys::release ()
-{
- ReleaseMutex (tty_list::mutex);
-}
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