diff options
Diffstat (limited to 'winsup/cygwin/tty.cc')
| -rw-r--r-- | winsup/cygwin/tty.cc | 451 |
1 files changed, 0 insertions, 451 deletions
diff --git a/winsup/cygwin/tty.cc b/winsup/cygwin/tty.cc deleted file mode 100644 index 418b816f3..000000000 --- a/winsup/cygwin/tty.cc +++ /dev/null @@ -1,451 +0,0 @@ -/* tty.cc - - Copyright 1997, 1998, 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. */ - -#include "winsup.h" -#include <errno.h> -#include <unistd.h> -#include <utmp.h> -#include <wingdi.h> -#include <winuser.h> -#include <sys/cygwin.h> -#include "cygerrno.h" -#include "security.h" -#include "fhandler.h" -#include "path.h" -#include "dtable.h" -#include "cygheap.h" -#include "pinfo.h" -#include "cygwin/cygserver_transport.h" -#include "cygwin/cygserver.h" -#include "shared_info.h" - -extern fhandler_tty_master *tty_master; - -extern "C" -int -grantpt (int fd) -{ - return 0; -} - -extern "C" -int -unlockpt (int fd) -{ - return 0; -} - -extern "C" -int -ttyslot (void) -{ - if (NOTSTATE (myself, PID_USETTY)) - return -1; - return myself->ctty; -} - -void __stdcall -tty_init (void) -{ - if (!myself->ppid_handle && NOTSTATE (myself, PID_CYGPARENT)) - cygheap->fdtab.get_debugger_info (); - - if (NOTSTATE (myself, PID_USETTY)) - return; - if (myself->ctty == -1) - if (NOTSTATE (myself, PID_CYGPARENT)) - myself->ctty = attach_tty (myself->ctty); - else - return; - if (myself->ctty == -1) - termios_printf ("Can't attach to tty"); -} - -/* Create session's master tty */ - -void __stdcall -create_tty_master (int ttynum) -{ - tty_master = (fhandler_tty_master *) - cygheap->fdtab.build_fhandler (-1, FH_TTYM, "/dev/ttym", NULL, ttynum); - if (tty_master->init (ttynum)) - api_fatal ("Can't create master tty"); - else - { - /* Log utmp entry */ - struct utmp our_utmp; - - bzero ((char *) &our_utmp, sizeof (utmp)); - (void) time (&our_utmp.ut_time); - strncpy (our_utmp.ut_name, getlogin (), sizeof (our_utmp.ut_name)); - cygwin_gethostname (our_utmp.ut_host, sizeof (our_utmp.ut_host)); - __small_sprintf (our_utmp.ut_line, "tty%d", ttynum); - our_utmp.ut_type = USER_PROCESS; - myself->ctty = ttynum; - login (&our_utmp); - } -} - -void __stdcall -tty_terminate (void) -{ - if (NOTSTATE (myself, PID_USETTY)) - return; - cygwin_shared->tty.terminate (); -} - -int __stdcall -attach_tty (int num) -{ - if (num != -1) - { - return cygwin_shared->tty.connect_tty (num); - } - if (NOTSTATE (myself, PID_USETTY)) - return -1; - return cygwin_shared->tty.allocate_tty (1); -} - -void -tty_list::terminate (void) -{ - int ttynum = myself->ctty; - - /* Keep master running till there are connected clients */ - if (ttynum != -1 && ttys[ttynum].master_pid == GetCurrentProcessId ()) - { - tty *t = ttys + ttynum; - CloseHandle (t->from_master); - CloseHandle (t->to_master); - /* 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); - } - - termios_printf ("tty %d master about to finish", ttynum); - ForceCloseHandle1 (t->to_slave, to_pty); - ForceCloseHandle1 (t->from_slave, from_pty); - CloseHandle (tty_master->inuse); - WaitForSingleObject (tty_master->hThread, INFINITE); - t->init (); - - char buf[20]; - __small_sprintf (buf, "tty%d", ttynum); - logout (buf); - } -} - -int -tty_list::connect_tty (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 (void) -{ - 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 flag == 0, just find a free tty. - */ -int -tty_list::allocate_tty (int with_console) -{ - HWND console; - - /* FIXME: This whole function needs a protective mutex. */ - - if (!with_console) - console = NULL; - else - { - char *oldtitle = new char [TITLESIZE]; - - if (!oldtitle) - { - termios_printf ("Can't *allocate console title buffer"); - return -1; - } - if (!GetConsoleTitle (oldtitle, TITLESIZE)) - { - termios_printf ("Can't read console title"); - return -1; - } - - if (WaitForSingleObject (title_mutex, INFINITE) == WAIT_FAILED) - termios_printf ("WFSO for title_mutext %p failed, %E", title_mutex); - - char buf[40]; - - __small_sprintf (buf, "cygwin.find.console.%d", myself->pid); - SetConsoleTitle (buf); - Sleep (40); - console = FindWindow (NULL, buf); - SetConsoleTitle (oldtitle); - Sleep (40); - ReleaseMutex (title_mutex); - if (console == NULL) - { - termios_printf ("Can't find console window"); - return -1; - } - } - /* Is a tty allocated for console? */ - - int freetty = -1; - 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. */ - } - - if (with_console && ttys[i].gethwnd () == console) - { - termios_printf ("console %x already associated with tty%d", - console, i); - /* Is the master alive? */ - HANDLE hMaster; - hMaster = OpenProcess (PROCESS_DUP_HANDLE, FALSE, ttys[i].master_pid); - if (hMaster) - { - CloseHandle (hMaster); - return i; - } - /* Master is dead */ - freetty = i; - break; - } - } - - /* There is no tty allocated to console, allocate the first free found */ - if (freetty == -1) - { - system_printf ("No free ttys available"); - return -1; - } - tty *t = ttys + freetty; - t->init (); - t->setsid (-1); - t->setpgid (myself->pgid); - t->sethwnd (console); - - if (with_console) - { - termios_printf ("console %x associated with tty%d", console, freetty); - create_tty_master (freetty); - } - else - termios_printf ("tty%d allocated", freetty); - return freetty; -} - -BOOL -tty::slave_alive () -{ - return alive (TTY_SLAVE_ALIVE); -} - -BOOL -tty::master_alive () -{ - return alive (TTY_MASTER_ALIVE); -} - -BOOL -tty::alive (const char *fmt) -{ - HANDLE ev; - char buf[sizeof (TTY_MASTER_ALIVE) + 16]; - - __small_sprintf (buf, fmt, ntty); - if ((ev = OpenEvent (EVENT_ALL_ACCESS, FALSE, buf))) - CloseHandle (ev); - return ev != NULL; -} - -HANDLE -tty::create_inuse (const char *fmt) -{ - HANDLE h; - char buf[sizeof (TTY_MASTER_ALIVE) + 16]; - - __small_sprintf (buf, fmt, ntty); - h = CreateEvent (&sec_all, 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 (void) -{ - output_stopped = 0; - setsid (0); - pgid = 0; - hwnd = NULL; - to_slave = NULL; - from_slave = NULL; - was_opened = 0; -} - -HANDLE -tty::get_event (const char *fmt, BOOL manual_reset) -{ - HANDLE hev; - char buf[40]; - - __small_sprintf (buf, fmt, ntty); - if (!(hev = CreateEvent (&sec_all, 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; -} - -int -tty::make_pipes (fhandler_pty_master *ptym) -{ - /* Create communication pipes */ - - /* FIXME: should this be sec_none_nih? */ - if (CreatePipe (&from_master, &to_slave, &sec_all, 0) == FALSE) - { - termios_printf ("can't create input pipe"); - set_errno (ENOENT); - return FALSE; - } - - ProtectHandle1 (to_slave, to_pty); - if (CreatePipe (&from_slave, &to_master, &sec_all, 0) == FALSE) - { - termios_printf ("can't create output pipe"); - set_errno (ENOENT); - return FALSE; - } - ProtectHandle1 (from_slave, from_pty); - termios_printf ("tty%d from_slave %p, to_slave %p", ntty, from_slave, - to_slave); - - DWORD pipe_mode = PIPE_NOWAIT; - if (!SetNamedPipeHandleState (to_slave, &pipe_mode, NULL, NULL)) - termios_printf ("can't set to_slave to non-blocking mode"); - ptym->set_io_handle (from_slave); - ptym->set_output_handle (to_slave); - return TRUE; -} - -BOOL -tty::common_init (fhandler_pty_master *ptym) -{ - /* Set termios information. Force initialization. */ - ptym->tcinit (this, TRUE); - - if (!make_pipes (ptym)) - return FALSE; - ptym->need_nl = 0; - - /* Save our pid */ - - master_pid = GetCurrentProcessId (); - - /* Allow the others to open us (for handle duplication) */ - - /* FIXME: we shold NOT set the security wide open when the - daemon is running - */ - if (wincap.has_security () && cygserver_running==CYGSERVER_OK && - (SetKernelObjectSecurity (hMainProc, DACL_SECURITY_INFORMATION, - get_null_sd ()) == FALSE)) - small_printf ("Can't set process security, %E"); - - /* Create synchronisation events */ - - if (ptym->get_device () != FH_TTYM) - { - ptym->output_done_event = ptym->ioctl_done_event = - ptym->ioctl_request_event = NULL; - } - else - { - if (!(ptym->output_done_event = get_event (OUTPUT_DONE_EVENT))) - return FALSE; - if (!(ptym->ioctl_done_event = get_event (IOCTL_DONE_EVENT))) - return FALSE; - if (!(ptym->ioctl_request_event = get_event (IOCTL_REQUEST_EVENT))) - return FALSE; - } - - if (!(ptym->input_available_event = get_event (INPUT_AVAILABLE_EVENT, TRUE))) - return FALSE; - - char buf[40]; - __small_sprintf (buf, OUTPUT_MUTEX, ntty); - if (!(ptym->output_mutex = CreateMutex (&sec_all, FALSE, buf))) - { - termios_printf ("can't create %s", buf); - set_errno (ENOENT); - return FALSE; - } - - __small_sprintf (buf, INPUT_MUTEX, ntty); - if (!(ptym->input_mutex = CreateMutex (&sec_all, FALSE, buf))) - { - termios_printf ("can't create %s", buf); - set_errno (ENOENT); - return FALSE; - } - - ProtectHandle1 (ptym->output_mutex, output_mutex); - ProtectHandle1 (ptym->input_mutex, input_mutex); - winsize.ws_col = 80; - winsize.ws_row = 25; - - termios_printf ("tty%d opened", ntty); - return TRUE; -} |