newlib/winsup/cygwin/termios.cc

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/* termios.cc: termios for WIN32.
Copyright 1996, 1997, 1998, 2000, 2001, 2002 Red Hat, Inc.
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Written by Doug Evans and Steve Chamberlain of Cygnus Support
dje@cygnus.com, sac@cygnus.com
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 <signal.h>
#include <stdlib.h>
#include "cygerrno.h"
#include "security.h"
#include "fhandler.h"
Add "path.h" include throughout, where needed. Use new path_conv methods and operators to simplify testing for directory and attributes, throughout. * path.h (path_conv::exists): New method. (path_conv::has_attribute): Ditto. (path_conv::isdir): Ditto. (path_conv::DWORD &): New operator. (path_conv::int &): Ditto. * dir.cc (rmdir): Eliminate a goto. * dtable.cc (dtable::build_fhandler): Accept opt and suffix info for path_conv.check. Return fh == NULL on path_conv error. Pass unit to set_name as appropriate. (dtable::reset_unix_path_name): New method. * dtable.h (dtable): Declare new method. Reflect arg changes to build_fhandler. * fhandler.cc (fhandler_disk_dummy_name): Eliminate. (fhandler_base::set_name): Expect paths to be NULL. Build unix_path_name from win32_path_name when it is a device. (fhandler_base::reset_unix_path_name): New method. (fhandler_base::raw_read): Report EISDIR when ERROR_INVALID_FUNCTION or ERROR_INVALID_PARAMETER and reading a directory. (fhandler_disk_file::fstat): Don't call stat_dev since we should now never be calling fhandler_disk_file methods with devices. (fhandler_base::fhandler_base): Clear {unix,win32}_path_name. (fhandler_base::~fhandler_base): Always free {unix,win32}_path_name. (fhandler_disk_file::fhandler_disk_file): Remove set_no_free_names kludge. (fhandler_disk_file::open): Ditto. * fhandler.h (fhandler_base::no_free_names): Eliminate. (fhandler_base::set_no_free_names): Ditto. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Don't set unix_path_name here. * path.cc (fchdir): Lock fd table throughout. Use new dtable::reset_unix_path_name method to reset path. * syscalls.cc (stat_worker): Reorganize to always call fstat method. Pass path_conv method to fhandler_*::open. (chroot): Elminate a goto.
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#include "path.h"
#include "dtable.h"
#include "cygheap.h"
#include "cygwin/version.h"
#include "perprocess.h"
#include "sigproc.h"
#include <sys/termios.h>
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/* tcsendbreak: POSIX 7.2.2.1 */
extern "C" int
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tcsendbreak (int fd, int duration)
{
int res = -1;
cygheap_fdget cfd (fd);
if (cfd < 0)
goto out;
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if (!cfd->is_tty ())
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set_errno (ENOTTY);
else if ((res = cfd->bg_check (-SIGTTOU)) > bg_eof)
res = cfd->tcsendbreak (duration);
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out:
syscall_printf ("%d = tcsendbreak (%d, %d)", res, fd, duration);
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return res;
}
/* tcdrain: POSIX 7.2.2.1 */
extern "C" int
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tcdrain (int fd)
{
int res = -1;
termios_printf ("tcdrain");
cygheap_fdget cfd (fd);
if (cfd < 0)
goto out;
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if (!cfd->is_tty ())
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set_errno (ENOTTY);
else if ((res = cfd->bg_check (-SIGTTOU)) > bg_eof)
res = cfd->tcdrain ();
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out:
syscall_printf ("%d = tcdrain (%d)", res, fd);
return res;
}
/* tcflush: POSIX 7.2.2.1 */
extern "C" int
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tcflush (int fd, int queue)
{
int res = -1;
cygheap_fdget cfd (fd);
if (cfd < 0)
goto out;
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if (!cfd->is_tty ())
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set_errno (ENOTTY);
else if ((res = cfd->bg_check (-SIGTTOU)) > bg_eof)
res = cfd->tcflush (queue);
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out:
termios_printf ("%d = tcflush (%d, %d)", res, fd, queue);
return res;
}
/* tcflow: POSIX 7.2.2.1 */
extern "C" int
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tcflow (int fd, int action)
{
int res = -1;
cygheap_fdget cfd (fd);
if (cfd < 0)
goto out;
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if (!cfd->is_tty ())
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set_errno (ENOTTY);
else if ((res = cfd->bg_check (-SIGTTOU)) > bg_eof)
res = cfd->tcflow (action);
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out:
syscall_printf ("%d = tcflow (%d, %d)", res, fd, action);
return res;
}
/* tcsetattr: POSIX96 7.2.1.1 */
extern "C" int
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tcsetattr (int fd, int a, const struct termios *t)
{
int res;
t = __tonew_termios (t);
int e = get_errno ();
while (1)
{
sigframe thisframe (mainthread);
res = -1;
cygheap_fdget cfd (fd);
if (cfd < 0)
{
e = get_errno ();
break;
}
if (!cfd->is_tty ())
{
e = ENOTTY;
break;
}
res = cfd->bg_check (-SIGTTOU);
switch (res)
{
case bg_eof:
e = get_errno ();
break;
case bg_ok:
if (cfd.isopen ())
res = cfd->tcsetattr (a, t);
e = get_errno ();
break;
case bg_signalled:
if (thisframe.call_signal_handler ())
continue;
res = -1;
/* fall through intentionally */
default:
e = get_errno ();
break;
}
break;
}
set_errno (e);
termios_printf ("iflag %p, oflag %p, cflag %p, lflag %p, VMIN %d, VTIME %d",
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t->c_iflag, t->c_oflag, t->c_cflag, t->c_lflag, t->c_cc[VMIN],
t->c_cc[VTIME]);
termios_printf ("%d = tcsetattr (%d, %d, %x)", res, fd, a, t);
return res;
}
/* tcgetattr: POSIX 7.2.1.1 */
extern "C" int
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tcgetattr (int fd, struct termios *in_t)
{
int res = -1;
struct termios *t = __makenew_termios (in_t);
cygheap_fdget cfd (fd);
if (cfd < 0)
/* saw an error */;
else if (!cfd->is_tty ())
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set_errno (ENOTTY);
else if ((res = cfd->tcgetattr (t)) == 0)
(void) __toapp_termios (in_t, t);
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if (res)
termios_printf ("%d = tcgetattr (%d, %p)", res, fd, in_t);
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else
termios_printf ("iflag %x, oflag %x, cflag %x, lflag %x, VMIN %d, VTIME %d",
t->c_iflag, t->c_oflag, t->c_cflag, t->c_lflag, t->c_cc[VMIN],
t->c_cc[VTIME]);
return res;
}
/* tcgetpgrp: POSIX 7.2.3.1 */
extern "C" int
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tcgetpgrp (int fd)
{
int res = -1;
cygheap_fdget cfd (fd);
if (cfd < 0)
/* saw an error */;
else if (!cfd->is_tty ())
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set_errno (ENOTTY);
else
res = cfd->tcgetpgrp ();
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termios_printf ("%d = tcgetpgrp (%d)", res, fd);
return res;
}
/* tcsetpgrp: POSIX 7.2.4.1 */
extern "C" int
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tcsetpgrp (int fd, pid_t pgid)
{
int res = -1;
cygheap_fdget cfd (fd);
if (cfd < 0)
/* saw an error */;
else if (!cfd->is_tty ())
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set_errno (ENOTTY);
else
res = cfd->tcsetpgrp (pgid);
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termios_printf ("%d = tcsetpgrp (%d, %x)", res, fd, pgid);
return res;
}
/* NIST PCTS requires not macro-only implementation */
#undef cfgetospeed
#undef cfgetispeed
#undef cfsetospeed
#undef cfsetispeed
/* cfgetospeed: POSIX96 7.1.3.1 */
extern "C" speed_t
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cfgetospeed (struct termios *tp)
{
return __tonew_termios (tp)->c_ospeed;
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}
/* cfgetispeed: POSIX96 7.1.3.1 */
extern "C" speed_t
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cfgetispeed (struct termios *tp)
{
return __tonew_termios (tp)->c_ispeed;
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}
static inline int
setspeed (speed_t &set_speed, speed_t from_speed)
{
int res;
switch (from_speed)
{
case B0:
case B50:
case B75:
case B110:
case B134:
case B150:
case B200:
case B300:
case B600:
case B1200:
case B1800:
case B2400:
case B4800:
case B9600:
case B19200:
case B38400:
case B57600:
case B115200:
case B128000:
case B230400:
case B256000:
set_speed = from_speed;
res = 0;
break;
default:
set_errno (EINVAL);
res = -1;
break;
}
return res;
}
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/* cfsetospeed: POSIX96 7.1.3.1 */
extern "C" int
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cfsetospeed (struct termios *in_tp, speed_t speed)
{
struct termios *tp = __tonew_termios (in_tp);
int res = setspeed (tp->c_ospeed, speed);
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(void) __toapp_termios (in_tp, tp);
return res;
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}
/* cfsetispeed: POSIX96 7.1.3.1 */
extern "C" int
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cfsetispeed (struct termios *in_tp, speed_t speed)
{
struct termios *tp = __tonew_termios (in_tp);
int res = setspeed (tp->c_ispeed, speed);
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(void) __toapp_termios (in_tp, tp);
return res;
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}