diff options
Diffstat (limited to 'winsup/cygwin/fhandler_tty.cc')
| -rw-r--r-- | winsup/cygwin/fhandler_tty.cc | 1259 |
1 files changed, 0 insertions, 1259 deletions
diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc deleted file mode 100644 index 1f552ceaf..000000000 --- a/winsup/cygwin/fhandler_tty.cc +++ /dev/null @@ -1,1259 +0,0 @@ -/* fhandler_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 <stdio.h> -#include <unistd.h> -#include <stdlib.h> -#include <errno.h> -#include <ctype.h> -#include <limits.h> -#include "cygerrno.h" -#include "security.h" -#include "fhandler.h" -#include "path.h" -#include "dtable.h" -#include "sigproc.h" -#include "pinfo.h" -#include "cygheap.h" -#include "shared_info.h" -#include "cygwin/cygserver.h" -#include "cygthread.h" - -/* Tty master stuff */ - -fhandler_tty_master NO_COPY *tty_master; - -static DWORD WINAPI process_input (void *); // Input queue thread -static DWORD WINAPI process_output (void *); // Output queue thread -static DWORD WINAPI process_ioctl (void *); // Ioctl requests thread - -fhandler_tty_master::fhandler_tty_master (int unit) - : fhandler_pty_master (FH_TTYM, unit), console (NULL) -{ -} - -void -fhandler_tty_master::set_winsize (bool sendSIGWINCH) -{ - winsize w; - console->ioctl (TIOCGWINSZ, &w); - get_ttyp ()->winsize = w; - if (sendSIGWINCH) - tc->kill_pgrp (SIGWINCH); -} - -int -fhandler_tty_master::init (int ntty) -{ - termios_printf ("Creating master for tty%d", ntty); - - if (init_console ()) - { - termios_printf ("can't create fhandler"); - return -1; - } - - termios ti; - memset (&ti, 0, sizeof (ti)); - console->tcsetattr (0, &ti); - - ttynum = ntty; - - cygwin_shared->tty[ttynum]->common_init (this); - - set_winsize (false); - - inuse = get_ttyp ()->create_inuse (TTY_MASTER_ALIVE); - - cygthread *h; - h = new cygthread (process_input, cygself, "ttyin"); - h->SetThreadPriority (THREAD_PRIORITY_HIGHEST); - h->zap_h (); - - h = new cygthread (process_ioctl, cygself, "ttyioctl"); - h->SetThreadPriority (THREAD_PRIORITY_HIGHEST); - h->zap_h (); - - h = new cygthread (process_output, cygself, "ttyout"); - h->SetThreadPriority (THREAD_PRIORITY_HIGHEST); - h->zap_h (); - - return 0; -} - -#ifdef DEBUGGING -static class mutex_stack -{ -public: - const char *fn; - int ln; - const char *tname; -} ostack[100]; - -static int osi; -#endif /*DEBUGGING*/ - -DWORD -fhandler_tty_common::__acquire_output_mutex (const char *fn, int ln, - DWORD ms) -{ - if (strace.active) - strace.prntf (_STRACE_TERMIOS, fn, "(%d): tty output_mutex: waiting %d ms", ln, ms); - DWORD res = WaitForSingleObject (output_mutex, ms); - if (res == WAIT_OBJECT_0) - { -#ifndef DEBUGGING - if (strace.active) - strace.prntf (_STRACE_TERMIOS, fn, "(%d): tty output_mutex: acquired", ln, res); -#else - ostack[osi].fn = fn; - ostack[osi].ln = ln; - ostack[osi].tname = cygthread::name (); - termios_printf ("acquired for %s:%d, osi %d", fn, ln, osi); - osi++; -#endif - } - return res; -} - -void -fhandler_tty_common::__release_output_mutex (const char *fn, int ln) -{ - if (ReleaseMutex (output_mutex)) - { -#ifndef DEBUGGING - if (strace.active) - strace.prntf (_STRACE_TERMIOS, fn, "(%d): tty output_mutex released", ln); -#else - if (osi > 0) - osi--; - termios_printf ("released at %s:%d, osi %d", fn, ln, osi); - termios_printf (" for %s:%d (%s)", ostack[osi].fn, ostack[osi].ln, ostack[osi].tname); - ostack[osi].ln = -ln; -#endif - } -} - -/* Process tty input. */ - -void -fhandler_pty_master::doecho (const void *str, DWORD len) -{ - acquire_output_mutex (INFINITE); - if (!WriteFile (get_ttyp ()->to_master, str, len, &len, NULL)) - termios_printf ("Write to %p failed, %E", get_ttyp ()->to_master); -// WaitForSingleObject (output_done_event, INFINITE); - release_output_mutex (); -} - -int -fhandler_pty_master::accept_input () -{ - DWORD bytes_left; - int ret = 1; - - (void) WaitForSingleObject (input_mutex, INFINITE); - - bytes_left = eat_readahead (-1); - - if (!bytes_left) - { - termios_printf ("sending EOF to slave"); - get_ttyp ()->read_retval = 0; - } - else - { - char *p = rabuf; - DWORD rc; - DWORD written = 0; - - termios_printf ("about to write %d chars to slave", bytes_left); - rc = WriteFile (get_output_handle (), p, bytes_left, &written, NULL); - if (!rc) - { - debug_printf ("error writing to pipe %E"); - get_ttyp ()->read_retval = -1; - ret = -1; - } - else - { - get_ttyp ()->read_retval = 1; - p += written; - bytes_left -= written; - if (bytes_left > 0) - { - debug_printf ("to_slave pipe is full"); - puts_readahead (p, bytes_left); - ret = 0; - } - } - } - - SetEvent (input_available_event); - ReleaseMutex (input_mutex); - return ret; -} - -static DWORD WINAPI -process_input (void *) -{ - char rawbuf[INP_BUFFER_SIZE]; - - while (1) - { - size_t nraw = INP_BUFFER_SIZE; - tty_master->console->read ((void *) rawbuf, nraw); - (void) tty_master->line_edit (rawbuf, nraw, tty_master->get_ttyp ()->ti); - } -} - -bool -fhandler_pty_master::hit_eof () -{ - if (get_ttyp ()->was_opened && !get_ttyp ()->slave_alive ()) - { - /* We have the only remaining open handle to this pty, and - the slave pty has been opened at least once. We treat - this as EOF. */ - termios_printf ("all other handles closed"); - return 1; - } - return 0; -} - -/* Process tty output requests */ - -int -fhandler_pty_master::process_slave_output (char *buf, size_t len, int pktmode_on) -{ - size_t rlen; - char outbuf[OUT_BUFFER_SIZE + 1]; - DWORD n; - int column = 0; - int rc = 0; - - if (len == 0) - goto out; - - if (need_nl) - { - /* We need to return a left over \n character, resulting from - \r\n conversion. Note that we already checked for FLUSHO and - output_stopped at the time that we read the character, so we - don't check again here. */ - buf[0] = '\n'; - need_nl = 0; - rc = 1; - goto out; - } - - - for (;;) - { - /* Set RLEN to the number of bytes to read from the pipe. */ - rlen = len; - if (get_ttyp ()->ti.c_oflag & OPOST && get_ttyp ()->ti.c_oflag & ONLCR) - { - /* We are going to expand \n to \r\n, so don't read more than - half of the number of bytes requested. */ - rlen /= 2; - if (rlen == 0) - rlen = 1; - } - if (rlen > sizeof outbuf) - rlen = sizeof outbuf; - - HANDLE handle = get_io_handle (); - - n = 0; // get_readahead_into_buffer (outbuf, len); - if (!n) - { - /* Doing a busy wait like this is quite inefficient, but nothing - else seems to work completely. Windows should provide some sort - of overlapped I/O for pipes, or something, but it doesn't. */ - while (1) - { - if (!PeekNamedPipe (handle, NULL, 0, NULL, &n, NULL)) - goto err; - if (n > 0) - break; - if (hit_eof ()) - goto out; - if (n == 0 && is_nonblocking ()) - { - set_errno (EAGAIN); - rc = -1; - break; - } - - Sleep (10); - } - - if (ReadFile (handle, outbuf, rlen, &n, NULL) == FALSE) - goto err; - } - - termios_printf ("bytes read %u", n); - get_ttyp ()->write_error = 0; - if (output_done_event != NULL) - SetEvent (output_done_event); - - if (get_ttyp ()->ti.c_lflag & FLUSHO) - continue; - - char *optr; - optr = buf; - if (pktmode_on) - *optr++ = TIOCPKT_DATA; - - if (!(get_ttyp ()->ti.c_oflag & OPOST)) // post-process output - { - memcpy (optr, outbuf, n); - optr += n; - } - else // raw output mode - { - char *iptr = outbuf; - - while (n--) - { - switch (*iptr) - { - case '\r': - if ((get_ttyp ()->ti.c_oflag & ONOCR) && column == 0) - { - iptr++; - continue; - } - if (get_ttyp ()->ti.c_oflag & OCRNL) - *iptr = '\n'; - else - column = 0; - break; - case '\n': - if (get_ttyp ()->ti.c_oflag & ONLCR) - { - *optr++ = '\r'; - column = 0; - } - if (get_ttyp ()->ti.c_oflag & ONLRET) - column = 0; - break; - default: - column++; - break; - } - - /* Don't store data past the end of the user's buffer. This - can happen if the user requests a read of 1 byte when - doing \r\n expansion. */ - if (optr - buf >= (int) len) - { - if (*iptr != '\n' || n != 0) - system_printf ("internal error: %d unexpected characters", n); - need_nl = 1; - break; - } - - *optr++ = *iptr++; - } - } - rc = optr - buf; - break; - - err: - if (GetLastError () == ERROR_BROKEN_PIPE) - rc = 0; - else - { - __seterrno (); - rc = -1; - } - break; - } - -out: - termios_printf ("returning %d", rc); - return rc; -} - -static DWORD WINAPI -process_output (void *) -{ - char buf[OUT_BUFFER_SIZE * 2]; - - for (;;) - { - int n = tty_master->process_slave_output (buf, OUT_BUFFER_SIZE, 0); - if (n <= 0) - { - if (n < 0) - termios_printf ("ReadFile %E"); - ExitThread (0); - } - n = tty_master->console->write ((void *) buf, (size_t) n); - tty_master->get_ttyp ()->write_error = n == -1 ? get_errno () : 0; - } -} - - -/* Process tty ioctl requests */ - -static DWORD WINAPI -process_ioctl (void *) -{ - while (1) - { - WaitForSingleObject (tty_master->ioctl_request_event, INFINITE); - termios_printf ("ioctl() request"); - tty_master->get_ttyp ()->ioctl_retval = - tty_master->console->ioctl (tty_master->get_ttyp ()->cmd, - (void *) &tty_master->get_ttyp ()->arg); - SetEvent (tty_master->ioctl_done_event); - } -} - -/**********************************************************************/ -/* Tty slave stuff */ - -fhandler_tty_slave::fhandler_tty_slave (int num) - : fhandler_tty_common (FH_TTYS, num) -{ - set_r_no_interrupt (1); -} - -fhandler_tty_slave::fhandler_tty_slave () - : fhandler_tty_common (FH_TTYS, 0) -{ - set_r_no_interrupt (1); -} - -/* FIXME: This function needs to close handles when it has - a failing condition. */ -int -fhandler_tty_slave::open (path_conv *, int flags, mode_t) -{ - tcinit (cygwin_shared->tty[ttynum]); - - attach_tty (ttynum); - tc->set_ctty (ttynum, flags); - - set_flags ((flags & ~O_TEXT) | O_BINARY); - /* Create synchronisation events */ - char buf[40]; - - /* output_done_event may or may not exist. It will exist if the tty - was opened by fhandler_tty_master::init, normally called at - startup if use_tty is non-zero. It will not exist if this is a - pty opened by fhandler_pty_master::open. In the former case, tty - output is handled by a separate thread which controls output. */ - __small_sprintf (buf, OUTPUT_DONE_EVENT, ttynum); - output_done_event = OpenEvent (EVENT_ALL_ACCESS, TRUE, buf); - - if (!(output_mutex = get_ttyp ()->open_output_mutex ())) - { - termios_printf ("open output mutex failed, %E"); - __seterrno (); - return 0; - } - if (!(input_mutex = get_ttyp ()->open_input_mutex ())) - { - termios_printf ("open input mutex failed, %E"); - __seterrno (); - return 0; - } - __small_sprintf (buf, INPUT_AVAILABLE_EVENT, ttynum); - if (!(input_available_event = OpenEvent (EVENT_ALL_ACCESS, TRUE, buf))) - { - termios_printf ("open input event failed, %E"); - __seterrno (); - return 0; - } - - /* The ioctl events may or may not exist. See output_done_event, - above. */ - __small_sprintf (buf, IOCTL_REQUEST_EVENT, ttynum); - ioctl_request_event = OpenEvent (EVENT_ALL_ACCESS, TRUE, buf); - __small_sprintf (buf, IOCTL_DONE_EVENT, ttynum); - ioctl_done_event = OpenEvent (EVENT_ALL_ACCESS, TRUE, buf); - - /* FIXME: Needs a method to eliminate tty races */ - { - acquire_output_mutex (500); - inuse = get_ttyp ()->create_inuse (TTY_SLAVE_ALIVE); - get_ttyp ()->was_opened = TRUE; - release_output_mutex (); - } - - /* Duplicate tty handles. */ - - if (!get_ttyp ()->from_slave || !get_ttyp ()->to_slave) - { - termios_printf ("tty handles have been closed"); - set_errno (EACCES); - return 0; - } - - HANDLE from_master_local, to_master_local; - - if (!wincap.has_security () || - cygserver_running == CYGSERVER_UNAVAIL || - !cygserver_attach_tty (&from_master_local, &to_master_local)) - { - termios_printf ("cannot dup handles via server. using old method."); - - HANDLE tty_owner = OpenProcess (PROCESS_DUP_HANDLE, FALSE, - get_ttyp ()->master_pid); - termios_printf ("tty own handle %p",tty_owner); - if (tty_owner == NULL) - { - termios_printf ("can't open tty (%d) handle process %d", - ttynum, get_ttyp ()->master_pid); - __seterrno (); - return 0; - } - - if (!DuplicateHandle (tty_owner, get_ttyp ()->from_master, - hMainProc, &from_master_local, 0, TRUE, - DUPLICATE_SAME_ACCESS)) - { - termios_printf ("can't duplicate input, %E"); - __seterrno (); - return 0; - } - - if (!DuplicateHandle (tty_owner, get_ttyp ()->to_master, - hMainProc, &to_master_local, 0, TRUE, - DUPLICATE_SAME_ACCESS)) - { - termios_printf ("can't duplicate output, %E"); - __seterrno (); - return 0; - } - CloseHandle (tty_owner); - } - - termios_printf ("duplicated from_master %p->%p from tty_owner", - get_ttyp ()->from_master, from_master_local); - termios_printf ("duplicated to_master %p->%p from tty_owner", - get_ttyp ()->to_master, to_master_local); - - set_io_handle (from_master_local); - set_output_handle (to_master_local); - - set_open_status (); - termios_printf ("tty%d opened", ttynum); - - return 1; -} - -int -fhandler_tty_slave::cygserver_attach_tty (LPHANDLE from_master_ptr, - LPHANDLE to_master_ptr) -{ - if (!from_master_ptr || !to_master_ptr) - return 0; - - client_request_attach_tty req ((DWORD) get_ttyp ()->master_pid, - (HANDLE) get_ttyp ()->from_master, - (HANDLE) get_ttyp ()->to_master); - - if (req.make_request () == -1 || req.error_code ()) - return 0; - - *from_master_ptr = req.from_master (); - *to_master_ptr = req.to_master (); - return 1; -} - -void -fhandler_tty_slave::init (HANDLE, DWORD a, mode_t) -{ - int mode = 0; - - a &= GENERIC_READ | GENERIC_WRITE; - if (a == GENERIC_READ) - mode = O_RDONLY; - if (a == GENERIC_WRITE) - mode = O_WRONLY; - if (a == (GENERIC_READ | GENERIC_WRITE)) - mode = O_RDWR; - - open (0, mode); -} - -int -fhandler_tty_slave::write (const void *ptr, size_t len) -{ - DWORD n, towrite = len; - - termios_printf ("tty%d, write(%x, %d)", ttynum, ptr, len); - - acquire_output_mutex (INFINITE); - - while (len) - { - n = min (OUT_BUFFER_SIZE, len); - char *buf = (char *)ptr; - ptr = (char *) ptr + n; - len -= n; - - /* Previous write may have set write_error to != 0. Check it here. - This is less than optimal, but the alternative slows down tty - writes enormously. */ - if (get_ttyp ()->write_error) - { - set_errno (get_ttyp ()->write_error); - towrite = (DWORD) -1; - break; - } - - if (WriteFile (get_output_handle (), buf, n, &n, NULL) == FALSE) - { - DWORD err = GetLastError (); - termios_printf ("WriteFile failed, %E"); - switch (err) - { - case ERROR_NO_DATA: - err = ERROR_IO_DEVICE; - default: - __seterrno_from_win_error (err); - } - raise (SIGHUP); /* FIXME: Should this be SIGTTOU? */ - towrite = (DWORD) -1; - break; - } - - if (output_done_event != NULL) - { - DWORD rc; - DWORD x = n * 1000; - rc = WaitForSingleObject (output_done_event, x); - termios_printf ("waited %d ms for output_done_event, WFSO %d", x, rc); - } - } - release_output_mutex (); - return towrite; -} - -void __stdcall -fhandler_tty_slave::read (void *ptr, size_t& len) -{ - int totalread = 0; - int vmin = 0; - int vtime = 0; /* Initialized to prevent -Wuninitialized warning */ - size_t readlen; - DWORD bytes_in_pipe; - char buf[INP_BUFFER_SIZE]; - char peek_buf[INP_BUFFER_SIZE]; - DWORD time_to_wait; - DWORD rc; - HANDLE w4[2]; - - termios_printf ("read(%x, %d) handle %p", ptr, len, get_handle ()); - - if ((get_ttyp ()->ti.c_lflag & ICANON)) - time_to_wait = INFINITE; - else - { - vmin = get_ttyp ()->ti.c_cc[VMIN]; - if (vmin > INP_BUFFER_SIZE) - vmin = INP_BUFFER_SIZE; - vtime = get_ttyp ()->ti.c_cc[VTIME]; - if (vmin < 0) - vmin = 0; - if (vtime < 0) - vtime = 0; - if (!vmin && !vtime) - time_to_wait = 0; - else - time_to_wait = !vtime ? INFINITE : 100 * vtime; - } - - w4[0] = signal_arrived; - w4[1] = input_available_event; - - DWORD waiter = INFINITE; - while (len) - { - rc = WaitForMultipleObjects (2, w4, FALSE, waiter); - - if (rc == WAIT_TIMEOUT) - break; - - if (rc == WAIT_FAILED) - { - termios_printf ("wait for input event failed, %E"); - break; - } - - if (rc == WAIT_OBJECT_0) - { - /* if we've received signal after successfully reading some data, - just return all data successfully read */ - if (totalread > 0) - break; - set_sig_errno (EINTR); - (ssize_t) len = -1; - return; - } - - rc = WaitForSingleObject (input_mutex, 1000); - if (rc == WAIT_FAILED) - { - termios_printf ("wait for input mutex failed, %E"); - break; - } - else if (rc == WAIT_TIMEOUT) - { - termios_printf ("failed to acquire input mutex after input event arrived"); - break; - } - if (!PeekNamedPipe (get_handle (), peek_buf, sizeof (peek_buf), &bytes_in_pipe, NULL, NULL)) - { - termios_printf ("PeekNamedPipe failed, %E"); - raise (SIGHUP); - bytes_in_pipe = 0; - } - - if (!vmin && !time_to_wait) - { - ReleaseMutex (input_mutex); - (ssize_t) len = bytes_in_pipe; - return; - } - - readlen = min (bytes_in_pipe, min (len, sizeof (buf))); - - if (vmin && readlen > (unsigned) vmin) - readlen = vmin; - - DWORD n = 0; - if (readlen) - { - termios_printf ("reading %d bytes (vtime %d)", readlen, vtime); - if (ReadFile (get_handle (), buf, readlen, &n, NULL) == FALSE) - { - termios_printf ("read failed, %E"); - raise (SIGHUP); - } - /* MSDN states that 5th prameter can be used to determine total - number of bytes in pipe, but for some reason this number doesn't - change after successful read. So we have to peek into the pipe - again to see if input is still available */ - if (!PeekNamedPipe (get_handle (), peek_buf, 1, &bytes_in_pipe, NULL, NULL)) - { - termios_printf ("PeekNamedPipe failed, %E"); - raise (SIGHUP); - bytes_in_pipe = 0; - } - if (n) - { - len -= n; - totalread += n; - memcpy (ptr, buf, n); - ptr = (char *) ptr + n; - } - } - - if (!bytes_in_pipe) - ResetEvent (input_available_event); - - ReleaseMutex (input_mutex); - - if (get_ttyp ()->read_retval < 0) // read error - { - set_errno (-get_ttyp ()->read_retval); - totalread = -1; - break; - } - if (get_ttyp ()->read_retval == 0) //EOF - { - termios_printf ("saw EOF"); - break; - } - if (get_ttyp ()->ti.c_lflag & ICANON || is_nonblocking ()) - break; - if (vmin && totalread >= vmin) - break; - - /* vmin == 0 && vtime == 0: - * we've already read all input, if any, so return immediately - * vmin == 0 && vtime > 0: - * we've waited for input 10*vtime ms in WFSO(input_available_event), - * no matter whether any input arrived, we shouldn't wait any longer, - * so return immediately - * vmin > 0 && vtime == 0: - * here, totalread < vmin, so continue waiting until more data - * arrive - * vmin > 0 && vtime > 0: - * similar to the previous here, totalread < vmin, and timer - * hadn't expired -- WFSO(input_available_event) != WAIT_TIMEOUT, - * so "restart timer" and wait until more data arrive - */ - - if (vmin == 0) - break; - - if (n) - waiter = time_to_wait; - } - termios_printf ("%d=read(%x, %d)", totalread, ptr, len); - (ssize_t) len = totalread; - return; -} - -int -fhandler_tty_common::dup (fhandler_base *child) -{ - fhandler_tty_slave *fts = (fhandler_tty_slave *) child; - int errind; - - fts->ttynum = ttynum; - fts->tcinit (get_ttyp ()); - - attach_tty (ttynum); - tc->set_ctty (ttynum, openflags); - - HANDLE nh; - - if (output_done_event == NULL) - fts->output_done_event = NULL; - else if (!DuplicateHandle (hMainProc, output_done_event, hMainProc, - &fts->output_done_event, 0, 1, - DUPLICATE_SAME_ACCESS)) - { - errind = 1; - goto err; - } - if (ioctl_request_event == NULL) - fts->ioctl_request_event = NULL; - else if (!DuplicateHandle (hMainProc, ioctl_request_event, hMainProc, - &fts->ioctl_request_event, 0, 1, - DUPLICATE_SAME_ACCESS)) - { - errind = 2; - goto err; - } - if (ioctl_done_event == NULL) - fts->ioctl_done_event = NULL; - else if (!DuplicateHandle (hMainProc, ioctl_done_event, hMainProc, - &fts->ioctl_done_event, 0, 1, - DUPLICATE_SAME_ACCESS)) - { - errind = 3; - goto err; - } - if (!DuplicateHandle (hMainProc, input_available_event, hMainProc, - &fts->input_available_event, 0, 1, - DUPLICATE_SAME_ACCESS)) - { - errind = 4; - goto err; - } - if (!DuplicateHandle (hMainProc, output_mutex, hMainProc, - &fts->output_mutex, 0, 1, - DUPLICATE_SAME_ACCESS)) - { - errind = 5; - goto err; - } - if (!DuplicateHandle (hMainProc, input_mutex, hMainProc, - &fts->input_mutex, 0, 1, - DUPLICATE_SAME_ACCESS)) - { - errind = 6; - goto err; - } - if (!DuplicateHandle (hMainProc, get_handle (), hMainProc, - &nh, 0, 1, - DUPLICATE_SAME_ACCESS)) - { - errind = 7; - goto err; - } - fts->set_io_handle (nh); - - if (!DuplicateHandle (hMainProc, get_output_handle (), hMainProc, - &nh, 0, 1, - DUPLICATE_SAME_ACCESS)) - { - errind = 8; - goto err; - } - fts->set_output_handle (nh); - - if (inuse == NULL) - fts->inuse = NULL; - else if (!DuplicateHandle (hMainProc, inuse, hMainProc, - &fts->inuse, 0, 1, - DUPLICATE_SAME_ACCESS)) - { - errind = 9; - goto err; - } - return 0; - -err: - __seterrno (); - termios_printf ("dup %d failed in DuplicateHandle, %E", errind); - return -1; -} - -int -fhandler_tty_slave::tcgetattr (struct termios *t) -{ - *t = get_ttyp ()->ti; - return 0; -} - -int -fhandler_tty_slave::tcsetattr (int, const struct termios *t) -{ - acquire_output_mutex (INFINITE); - get_ttyp ()->ti = *t; - release_output_mutex (); - return 0; -} - -int -fhandler_tty_slave::tcflush (int) -{ - return 0; -} - -int -fhandler_tty_slave::ioctl (unsigned int cmd, void *arg) -{ - termios_printf ("ioctl (%x)", cmd); - - if (myself->pgid && get_ttyp ()->getpgid () != myself->pgid - && myself->ctty == ttynum && (get_ttyp ()->ti.c_lflag & TOSTOP)) - { - /* background process */ - termios_printf ("bg ioctl pgid %d, tpgid %d, ctty %d", - myself->pgid, get_ttyp ()->getpgid (), myself->ctty); - raise (SIGTTOU); - } - - switch (cmd) - { - case TIOCGWINSZ: - case TIOCSWINSZ: - break; - case FIONBIO: - set_nonblocking (*(int *) arg); - goto out; - default: - set_errno (EINVAL); - return -1; - } - - acquire_output_mutex (INFINITE); - - get_ttyp ()->cmd = cmd; - get_ttyp ()->ioctl_retval = 0; - switch (cmd) - { - case TIOCGWINSZ: - get_ttyp ()->arg.winsize = get_ttyp ()->winsize; - if (ioctl_request_event) - SetEvent (ioctl_request_event); - *(struct winsize *) arg = get_ttyp ()->arg.winsize; - if (ioctl_done_event) - WaitForSingleObject (ioctl_done_event, INFINITE); - get_ttyp ()->winsize = get_ttyp ()->arg.winsize; - break; - case TIOCSWINSZ: - if (get_ttyp ()->winsize.ws_row != ((struct winsize *) arg)->ws_row - || get_ttyp ()->winsize.ws_col != ((struct winsize *) arg)->ws_col) - { - get_ttyp ()->arg.winsize = *(struct winsize *) arg; - if (ioctl_request_event) - { - get_ttyp ()->ioctl_retval = -1; - SetEvent (ioctl_request_event); - } - else - { - get_ttyp ()->winsize = *(struct winsize *) arg; - kill (-get_ttyp ()->getpgid (), SIGWINCH); - } - if (ioctl_done_event) - WaitForSingleObject (ioctl_done_event, INFINITE); - } - break; - } - - release_output_mutex (); - -out: - termios_printf ("%d = ioctl (%x)", get_ttyp ()->ioctl_retval, cmd); - return get_ttyp ()->ioctl_retval; -} - -/******************************************************* - fhandler_pty_master -*/ -fhandler_pty_master::fhandler_pty_master (DWORD devtype, int unit) - : fhandler_tty_common (devtype, unit) -{ -} - -int -fhandler_pty_master::open (path_conv *, int flags, mode_t) -{ - ttynum = cygwin_shared->tty.allocate_tty (0); - if (ttynum < 0) - return 0; - - cygwin_shared->tty[ttynum]->common_init (this); - inuse = get_ttyp ()->create_inuse (TTY_MASTER_ALIVE); - set_flags ((flags & ~O_TEXT) | O_BINARY); - set_open_status (); - - termios_printf ("opened pty master tty%d<%p>", ttynum, this); - return 1; -} - -int -fhandler_tty_common::close () -{ - if (output_done_event && !CloseHandle (output_done_event)) - termios_printf ("CloseHandle (output_done_event), %E"); - if (ioctl_done_event && !CloseHandle (ioctl_done_event)) - termios_printf ("CloseHandle (ioctl_done_event), %E"); - if (ioctl_request_event && !CloseHandle (ioctl_request_event)) - termios_printf ("CloseHandle (ioctl_request_event), %E"); - if (inuse && !CloseHandle (inuse)) - termios_printf ("CloseHandle (inuse), %E"); - if (!ForceCloseHandle (input_mutex)) - termios_printf ("CloseHandle (input_mutex<%p>), %E", input_mutex); - if (!ForceCloseHandle (output_mutex)) - termios_printf ("CloseHandle (output_mutex<%p>), %E", output_mutex); - - /* Send EOF to slaves if master side is closed */ - if (!get_ttyp ()->master_alive ()) - { - termios_printf ("no more masters left. sending EOF" ); - SetEvent (input_available_event); - } - - if (!ForceCloseHandle (input_available_event)) - termios_printf ("CloseHandle (input_available_event<%p>), %E", input_available_event); - if (!ForceCloseHandle1 (get_handle (), from_pty)) - termios_printf ("CloseHandle (get_handle ()<%p>), %E", get_handle ()); - if (!ForceCloseHandle1 (get_output_handle (), to_pty)) - termios_printf ("CloseHandle (get_output_handle ()<%p>), %E", get_output_handle ()); - - inuse = NULL; - termios_printf ("tty%d <%p,%p> closed", ttynum, get_handle (), get_output_handle ()); - return 0; -} - -int -fhandler_pty_master::close () -{ -#if 0 - while (accept_input () > 0) - continue; -#endif - this->fhandler_tty_common::close (); - - if (!get_ttyp ()->master_alive ()) - { - termios_printf ("freeing tty%d (%d)", ttynum, get_ttyp ()->ntty); -#if 0 - if (get_ttyp ()->to_slave) - ForceCloseHandle1 (get_ttyp ()->to_slave, to_slave); - if (get_ttyp ()->from_slave) - ForceCloseHandle1 (get_ttyp ()->from_slave, from_slave); -#endif - if (get_ttyp ()->from_master) - CloseHandle (get_ttyp ()->from_master); - if (get_ttyp ()->to_master) - CloseHandle (get_ttyp ()->to_master); - get_ttyp ()->init (); - } - - return 0; -} - -int -fhandler_pty_master::write (const void *ptr, size_t len) -{ - int i; - char *p = (char *) ptr; - termios ti = tc->ti; - - for (i = 0; i < (int) len; i++) - { - line_edit_status status = line_edit (p++, 1, ti); - if (status > line_edit_signalled) - { - if (status != line_edit_pipe_full) - i = -1; - break; - } - } - return i; -} - -void __stdcall -fhandler_pty_master::read (void *ptr, size_t& len) -{ - (ssize_t) len = process_slave_output ((char *) ptr, len, pktmode); - return; -} - -int -fhandler_pty_master::tcgetattr (struct termios *t) -{ - *t = cygwin_shared->tty[ttynum]->ti; - return 0; -} - -int -fhandler_pty_master::tcsetattr (int, const struct termios *t) -{ - cygwin_shared->tty[ttynum]->ti = *t; - return 0; -} - -int -fhandler_pty_master::tcflush (int) -{ - return 0; -} - -int -fhandler_pty_master::ioctl (unsigned int cmd, void *arg) -{ - switch (cmd) - { - case TIOCPKT: - pktmode = * (int *) arg; - break; - case TIOCGWINSZ: - *(struct winsize *) arg = get_ttyp ()->winsize; - break; - case TIOCSWINSZ: - if (get_ttyp ()->winsize.ws_row != ((struct winsize *) arg)->ws_row - || get_ttyp ()->winsize.ws_col != ((struct winsize *) arg)->ws_col) - { - get_ttyp ()->winsize = * (struct winsize *) arg; - kill (-get_ttyp ()->getpgid (), SIGWINCH); - } - break; - case FIONBIO: - set_nonblocking (*(int *) arg); - break; - default: - set_errno (EINVAL); - return -1; - } - return 0; -} - -char * -fhandler_pty_master::ptsname (void) -{ - static char buf[32]; - - __small_sprintf (buf, "/dev/tty%d", ttynum); - return buf; -} - -void -fhandler_tty_common::set_close_on_exec (int val) -{ -#ifndef DEBUGGING - this->fhandler_base::set_close_on_exec (val); -#else - /* FIXME: This is a duplication from fhandler_base::set_close_on_exec. - It is here because we need to specify the "from_pty" stuff here or - we'll get warnings from ForceCloseHandle when debugging. */ - set_inheritance (get_io_handle (), val); - set_close_on_exec_flag (val); -#endif - if (output_done_event) - set_inheritance (output_done_event, val); - if (ioctl_request_event) - set_inheritance (ioctl_request_event, val); - if (ioctl_done_event) - set_inheritance (ioctl_done_event, val); - if (inuse) - set_inheritance (inuse, val); - set_inheritance (output_mutex, val); - set_inheritance (input_mutex, val); - set_inheritance (input_available_event, val); - set_inheritance (output_handle, val); -} - -void -fhandler_tty_common::fixup_after_fork (HANDLE parent) -{ - this->fhandler_termios::fixup_after_fork (parent); - if (output_done_event) - fork_fixup (parent, output_done_event, "output_done_event"); - if (ioctl_request_event) - fork_fixup (parent, ioctl_request_event, "ioctl_request_event"); - if (ioctl_done_event) - fork_fixup (parent, ioctl_done_event, "ioctl_done_event"); - if (output_mutex) - fork_fixup (parent, output_mutex, "output_mutex"); - if (input_mutex) - fork_fixup (parent, input_mutex, "input_mutex"); - if (input_available_event) - fork_fixup (parent, input_available_event, "input_available_event"); - fork_fixup (parent, inuse, "inuse"); -} - -void -fhandler_pty_master::set_close_on_exec (int val) -{ - this->fhandler_tty_common::set_close_on_exec (val); - - /* FIXME: There is a console handle leak here. */ - if (get_ttyp ()->master_pid == GetCurrentProcessId ()) - { - get_ttyp ()->from_slave = get_handle (); - get_ttyp ()->to_slave = get_output_handle (); - termios_printf ("from_slave %p, to_slave %p", get_handle (), - get_output_handle ()); - } -} - -void -fhandler_tty_master::fixup_after_fork (HANDLE child) -{ - this->fhandler_pty_master::fixup_after_fork (child); - console->fixup_after_fork (child); -} - -void -fhandler_tty_master::fixup_after_exec (HANDLE) -{ - console->close (); - init_console (); -} - -int -fhandler_tty_master::init_console () -{ - console = (fhandler_console *) cygheap->fdtab.build_fhandler (-1, FH_CONSOLE, "/dev/ttym"); - if (console == NULL) - return -1; - - console->init (INVALID_HANDLE_VALUE, GENERIC_READ | GENERIC_WRITE, O_BINARY); - console->set_r_no_interrupt (1); - return 0; -} |