352 lines
6.7 KiB
C++
352 lines
6.7 KiB
C++
/* termios.cc: termios for WIN32.
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Written by Doug Evans and Steve Chamberlain of Cygnus Support
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dje@cygnus.com, sac@cygnus.com
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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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#include "winsup.h"
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#include "cygwin/version.h"
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#include <stdlib.h>
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#include "cygerrno.h"
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#include "security.h"
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#include "path.h"
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#include "fhandler.h"
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#include "dtable.h"
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#include "cygheap.h"
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#include "perprocess.h"
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#include "cygtls.h"
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/* tcsendbreak: POSIX 7.2.2.1 */
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extern "C" int
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tcsendbreak (int fd, int duration)
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{
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int res = -1;
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cygheap_fdget cfd (fd);
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if (cfd < 0)
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goto out;
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if (!cfd->is_tty ())
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set_errno (ENOTTY);
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else if ((res = cfd->bg_check (-SIGTTOU)) > bg_eof)
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res = cfd->tcsendbreak (duration);
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out:
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syscall_printf ("%R = tcsendbreak(%d, %d)", res, fd, duration);
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return res;
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}
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/* tcdrain: POSIX 7.2.2.1 */
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extern "C" int
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tcdrain (int fd)
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{
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pthread_testcancel ();
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int res = -1;
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termios_printf ("tcdrain");
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cygheap_fdget cfd (fd);
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if (cfd < 0)
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goto out;
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if (!cfd->is_tty ())
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set_errno (ENOTTY);
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else if ((res = cfd->bg_check (-SIGTTOU)) > bg_eof)
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res = cfd->tcdrain ();
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out:
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syscall_printf ("%R = tcdrain(%d)", res, fd);
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return res;
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}
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/* tcflush: POSIX 7.2.2.1 */
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extern "C" int
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tcflush (int fd, int queue)
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{
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int res = -1;
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cygheap_fdget cfd (fd);
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if (cfd < 0)
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goto out;
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if (!cfd->is_tty ())
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set_errno (ENOTTY);
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else if (queue != TCIFLUSH && queue != TCOFLUSH && queue != TCIOFLUSH)
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set_errno (EINVAL);
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else if ((res = cfd->bg_check (-SIGTTOU)) > bg_eof)
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res = cfd->tcflush (queue);
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out:
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termios_printf ("%R = tcflush(%d, %d)", res, fd, queue);
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return res;
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}
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/* tcflow: POSIX 7.2.2.1 */
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extern "C" int
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tcflow (int fd, int action)
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{
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int res = -1;
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cygheap_fdget cfd (fd);
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if (cfd < 0)
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goto out;
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if (!cfd->is_tty ())
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set_errno (ENOTTY);
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else if ((res = cfd->bg_check (-SIGTTOU)) > bg_eof)
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res = cfd->tcflow (action);
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out:
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syscall_printf ("%R = tcflow(%d, %d)", res, fd, action);
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return res;
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}
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/* tcsetattr: POSIX96 7.2.1.1 */
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extern "C" int
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tcsetattr (int fd, int a, const struct termios *t)
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{
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int res;
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t = __tonew_termios (t);
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int e = get_errno ();
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while (1)
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{
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res = -1;
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cygheap_fdget cfd (fd);
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if (cfd < 0)
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{
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e = get_errno ();
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break;
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}
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if (!cfd->is_tty ())
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{
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e = ENOTTY;
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break;
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}
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res = cfd->bg_check (-SIGTTOU);
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switch (res)
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{
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case bg_eof:
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e = get_errno ();
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break;
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case bg_ok:
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if (cfd.isopen ())
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res = cfd->tcsetattr (a, t);
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e = get_errno ();
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break;
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case bg_signalled:
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if (_my_tls.call_signal_handler ())
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continue;
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res = -1;
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/* fall through intentionally */
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default:
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e = get_errno ();
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break;
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}
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break;
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}
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set_errno (e);
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termios_printf ("iflag %y, oflag %y, cflag %y, lflag %y, VMIN %d, VTIME %d",
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t->c_iflag, t->c_oflag, t->c_cflag, t->c_lflag, t->c_cc[VMIN],
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t->c_cc[VTIME]);
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termios_printf ("%R = tcsetattr(%d, %d, %p)", res, fd, a, t);
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return res;
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}
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/* tcgetattr: POSIX 7.2.1.1 */
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extern "C" int
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tcgetattr (int fd, struct termios *in_t)
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{
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int res = -1;
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struct termios *t = __makenew_termios (in_t);
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cygheap_fdget cfd (fd);
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if (cfd < 0)
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/* saw an error */;
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else if (!cfd->is_tty ())
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set_errno (ENOTTY);
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else if ((res = cfd->tcgetattr (t)) == 0)
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__toapp_termios (in_t, t);
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if (res)
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termios_printf ("%R = tcgetattr(%d, %p)", res, fd, in_t);
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else
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termios_printf ("iflag %y, oflag %y, cflag %y, lflag %y, VMIN %d, VTIME %d",
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t->c_iflag, t->c_oflag, t->c_cflag, t->c_lflag, t->c_cc[VMIN],
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t->c_cc[VTIME]);
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return res;
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}
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/* tcgetpgrp: POSIX 7.2.3.1 */
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extern "C" int
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tcgetpgrp (int fd)
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{
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int res;
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cygheap_fdget cfd (fd);
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if (cfd < 0)
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res = -1;
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else
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res = cfd->tcgetpgrp ();
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termios_printf ("%R = tcgetpgrp(%d)", res, fd);
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return res;
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}
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extern "C" pid_t
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tcgetsid (int fd)
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{
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int res;
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cygheap_fdget cfd (fd);
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if (cfd < 0)
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res = -1;
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else
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res = cfd->tcgetsid ();
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termios_printf ("%R = tcgetsid(%d)", res, fd);
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return res;
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}
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/* tcsetpgrp: POSIX 7.2.4.1 */
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extern "C" int
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tcsetpgrp (int fd, pid_t pgid)
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{
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int res = -1;
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cygheap_fdget cfd (fd);
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if (cfd < 0)
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/* saw an error */;
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else if (!cfd->is_tty ())
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set_errno (ENOTTY);
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else
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res = cfd->tcsetpgrp (pgid);
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termios_printf ("%R = tcsetpgrp(%d, %d)", res, fd, pgid);
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return res;
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}
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/* NIST PCTS requires not macro-only implementation */
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#undef cfgetospeed
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#undef cfgetispeed
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#undef cfsetospeed
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#undef cfsetispeed
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/* cfgetospeed: POSIX96 7.1.3.1 */
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extern "C" speed_t
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cfgetospeed (const struct termios *tp)
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{
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return __tonew_termios (tp)->c_ospeed;
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}
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/* cfgetispeed: POSIX96 7.1.3.1 */
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extern "C" speed_t
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cfgetispeed (const struct termios *tp)
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{
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return __tonew_termios (tp)->c_ispeed;
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}
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static inline int
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setspeed (speed_t &set_speed, speed_t from_speed)
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{
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int res;
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switch (from_speed)
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{
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case B0:
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case B50:
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case B75:
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case B110:
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case B134:
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case B150:
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case B200:
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case B300:
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case B600:
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case B1200:
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case B1800:
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case B2400:
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case B4800:
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case B9600:
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case B19200:
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case B38400:
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case B57600:
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case B115200:
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case B128000:
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case B230400:
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case B256000:
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case B460800:
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case B500000:
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case B576000:
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case B921600:
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case B1000000:
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case B1152000:
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case B1500000:
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case B2000000:
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case B2500000:
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case B3000000:
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set_speed = from_speed;
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res = 0;
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break;
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default:
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set_errno (EINVAL);
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res = -1;
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break;
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}
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return res;
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}
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/* cfsetospeed: POSIX96 7.1.3.1 */
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extern "C" int
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cfsetospeed (struct termios *in_tp, speed_t speed)
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{
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struct termios *tp = __tonew_termios (in_tp);
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int res = setspeed (tp->c_ospeed, speed);
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__toapp_termios (in_tp, tp);
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return res;
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}
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/* cfsetispeed: POSIX96 7.1.3.1 */
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extern "C" int
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cfsetispeed (struct termios *in_tp, speed_t speed)
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{
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struct termios *tp = __tonew_termios (in_tp);
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int res = setspeed (tp->c_ispeed, speed);
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__toapp_termios (in_tp, tp);
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return res;
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}
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/* cfsetspeed: 4.4BSD */
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extern "C" int
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cfsetspeed (struct termios *in_tp, speed_t speed)
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{
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struct termios *tp = __tonew_termios (in_tp);
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int res;
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/* errors come only from unsupported baud rates, so setspeed() would return
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identical results in both calls */
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if ((res = setspeed (tp->c_ospeed, speed)) == 0)
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setspeed (tp->c_ispeed, speed);
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__toapp_termios (in_tp, tp);
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return res;
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}
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extern "C" void
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cfmakeraw(struct termios *tp)
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{
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tp->c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP
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| INLCR | IGNCR | ICRNL | IXON);
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tp->c_oflag &= ~OPOST;
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tp->c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
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tp->c_cflag &= ~(CSIZE | PARENB);
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tp->c_cflag |= CS8;
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}
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