[PATCH 2/2] Cygwin: console: Fix handling of Ctrl-S in Win7.
Takashi Yano
takashi.yano@nifty.ne.jp
Thu Feb 18 09:01:28 GMT 2021
- If ENABLE_LINE_INPUT is set, Ctrl-S is handled by Windows if the
OS is Windows 7. This conflicts with Ctrl-S handling in cygwin
console code. This patch unsets ENABLE_LINE_INPUT flag in cygwin
and set it when native app is executed.
---
winsup/cygwin/fhandler.h | 9 +-
winsup/cygwin/fhandler_console.cc | 291 +++++++-----------------------
winsup/cygwin/select.cc | 4 +-
winsup/cygwin/spawn.cc | 32 ++--
winsup/cygwin/tty.h | 8 +-
5 files changed, 98 insertions(+), 246 deletions(-)
diff --git a/winsup/cygwin/fhandler.h b/winsup/cygwin/fhandler.h
index e457e2785..faa910692 100644
--- a/winsup/cygwin/fhandler.h
+++ b/winsup/cygwin/fhandler.h
@@ -2135,11 +2135,9 @@ private:
const unsigned char *write_normal (unsigned const char*, unsigned const char *);
void char_command (char);
bool set_raw_win32_keyboard_mode (bool);
- int output_tcsetattr (int a, const struct termios *t);
/* Input calls */
int igncr_enabled ();
- int input_tcsetattr (int a, const struct termios *t);
void set_cursor_maybe ();
static bool create_invisible_console (HWINSTA);
static bool create_invisible_console_workaround (bool force);
@@ -2196,7 +2194,6 @@ private:
void fixup_after_exec () {fixup_after_fork_exec (true);}
void fixup_after_fork (HANDLE) {fixup_after_fork_exec (false);}
void set_close_on_exec (bool val);
- void set_input_state ();
bool send_winch_maybe ();
void setup ();
bool set_unit ();
@@ -2245,8 +2242,10 @@ private:
void get_duplicated_handle_set (handle_set_t *p);
static void close_handle_set (handle_set_t *p);
- static void request_xterm_mode_input (bool, const handle_set_t *p);
- static void request_xterm_mode_output (bool, const handle_set_t *p);
+ static void set_input_mode (tty::cons_mode m, const termios *t,
+ const handle_set_t *p);
+ static void set_output_mode (tty::cons_mode m, const termios *t,
+ const handle_set_t *p);
static void cons_master_thread (handle_set_t *p, tty *ttyp);
diff --git a/winsup/cygwin/fhandler_console.cc b/winsup/cygwin/fhandler_console.cc
index 4dee506dd..ca8eb6400 100644
--- a/winsup/cygwin/fhandler_console.cc
+++ b/winsup/cygwin/fhandler_console.cc
@@ -299,8 +299,8 @@ fhandler_console::cons_master_thread (handle_set_t *p, tty *ttyp)
{ /* Fix tab position */
/* Re-setting ENABLE_VIRTUAL_TERMINAL_PROCESSING
fixes the tab position. */
- request_xterm_mode_output (false, p);
- request_xterm_mode_output (true, p);
+ set_output_mode (tty::restore, &ti, p);
+ set_input_mode (tty::cygwin, &ti, p);
}
ttyp->kill_pgrp (SIGWINCH);
}
@@ -446,64 +446,72 @@ fhandler_console::rabuflen ()
return con_ra.rabuflen;
}
-/* The function request_xterm_mode_{in,out}put() should be static so that
- they can be called even after the fhandler_console instance is deleted. */
+/* The function set_{in,out}put_mode() should be static so that they
+ can be called even after the fhandler_console instance is deleted. */
void
-fhandler_console::request_xterm_mode_input (bool req, const handle_set_t *p)
+fhandler_console::set_input_mode (tty::cons_mode m, const termios *t,
+ const handle_set_t *p)
{
- if (con_is_legacy)
- return;
+ DWORD flags = 0, oflags;
WaitForSingleObject (p->input_mutex, INFINITE);
- DWORD dwMode;
- GetConsoleMode (p->input_handle, &dwMode);
- if (req)
+ GetConsoleMode (p->input_handle, &oflags);
+ switch (m)
{
- if (!(dwMode & ENABLE_VIRTUAL_TERMINAL_INPUT))
- {
- dwMode |= ENABLE_VIRTUAL_TERMINAL_INPUT;
- SetConsoleMode (p->input_handle, dwMode);
- if (con.cursor_key_app_mode) /* Restore DECCKM */
- {
- request_xterm_mode_output (true, p);
- WriteConsoleW (p->output_handle, L"\033[?1h", 5, NULL, 0);
- }
- }
+ case tty::restore:
+ flags = ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT | ENABLE_PROCESSED_INPUT;
+ break;
+ case tty::cygwin:
+ flags = ENABLE_WINDOW_INPUT;
+ if (wincap.has_con_24bit_colors () && !con_is_legacy)
+ flags |= ENABLE_VIRTUAL_TERMINAL_INPUT;
+ else
+ flags |= ENABLE_MOUSE_INPUT;
+ break;
+ case tty::native:
+ if (t->c_lflag & ECHO)
+ flags |= ENABLE_ECHO_INPUT;
+ if (t->c_lflag & ICANON)
+ flags |= ENABLE_LINE_INPUT;
+ if (flags & ENABLE_ECHO_INPUT && !(flags & ENABLE_LINE_INPUT))
+ /* This is illegal, so turn off the echo here, and fake it
+ when we read the characters */
+ flags &= ~ENABLE_ECHO_INPUT;
+ if ((t->c_lflag & ISIG) && !(t->c_iflag & IGNBRK))
+ flags |= ENABLE_PROCESSED_INPUT;
+ break;
}
- else
- {
- if (dwMode & ENABLE_VIRTUAL_TERMINAL_INPUT)
- {
- dwMode &= ~ENABLE_VIRTUAL_TERMINAL_INPUT;
- SetConsoleMode (p->input_handle, dwMode);
- }
+ SetConsoleMode (p->input_handle, flags);
+ if (!(oflags & ENABLE_VIRTUAL_TERMINAL_INPUT)
+ && (flags & ENABLE_VIRTUAL_TERMINAL_INPUT)
+ && con.cursor_key_app_mode)
+ { /* Restore DECCKM */
+ set_output_mode (tty::cygwin, t, p);
+ WriteConsoleW (p->output_handle, L"\033[?1h", 5, NULL, 0);
}
ReleaseMutex (p->input_mutex);
}
void
-fhandler_console::request_xterm_mode_output (bool req, const handle_set_t *p)
+fhandler_console::set_output_mode (tty::cons_mode m, const termios *t,
+ const handle_set_t *p)
{
- if (con_is_legacy)
- return;
+ DWORD flags = ENABLE_PROCESSED_OUTPUT | ENABLE_WRAP_AT_EOL_OUTPUT;
WaitForSingleObject (p->output_mutex, INFINITE);
- DWORD dwMode;
- GetConsoleMode (p->output_handle, &dwMode);
- if (req)
- {
- if (!(dwMode & ENABLE_VIRTUAL_TERMINAL_PROCESSING))
- {
- dwMode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
- SetConsoleMode (p->output_handle, dwMode);
- }
- }
- else
+ switch (m)
{
- if (dwMode & ENABLE_VIRTUAL_TERMINAL_PROCESSING)
- {
- dwMode &= ~ENABLE_VIRTUAL_TERMINAL_PROCESSING;
- SetConsoleMode (p->output_handle, dwMode);
- }
+ case tty::restore:
+ break;
+ case tty::cygwin:
+ if (wincap.has_con_24bit_colors () && !con_is_legacy)
+ flags |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
+ fallthrough;
+ case tty::native:
+ if (wincap.has_con_24bit_colors () && !con_is_legacy
+ && (!(t->c_oflag & OPOST) || !(t->c_oflag & ONLCR)))
+ flags |= DISABLE_NEWLINE_AUTO_RETURN;
+ break;
}
+ SetConsoleMode (p->output_handle, flags);
ReleaseMutex (p->output_mutex);
}
@@ -616,8 +624,8 @@ fhandler_console::fix_tab_position (void)
{
/* Re-setting ENABLE_VIRTUAL_TERMINAL_PROCESSING
fixes the tab position. */
- request_xterm_mode_output (false, &handle_set);
- request_xterm_mode_output (true, &handle_set);
+ set_output_mode (tty::restore, &get_ttyp ()->ti, &handle_set);
+ set_output_mode (tty::cygwin, &get_ttyp ()->ti, &handle_set);
}
bool
@@ -678,11 +686,7 @@ fhandler_console::read (void *pv, size_t& buflen)
DWORD timeout = is_nonblocking () ? 0 : INFINITE;
- set_input_state ();
-
- /* if system has 24 bit color capability, use xterm compatible mode. */
- if (wincap.has_con_24bit_colors ())
- request_xterm_mode_input (true, &handle_set);
+ set_input_mode (tty::cygwin, &get_ttyp ()->ti, &handle_set);
while (!input_ready && !get_cons_readahead_valid ())
{
@@ -1165,13 +1169,6 @@ out:
return stat;
}
-void
-fhandler_console::set_input_state ()
-{
- if (get_ttyp ()->rstcons ())
- input_tcsetattr (0, &get_ttyp ()->ti);
-}
-
bool
dev_console::fillin (HANDLE h)
{
@@ -1313,7 +1310,6 @@ fhandler_console::open (int flags, mode_t)
con.set_default_attr ();
}
- get_ttyp ()->rstcons (false);
set_open_status ();
if (myself->pid == con.owner && wincap.has_con_24bit_colors ())
@@ -1338,12 +1334,8 @@ fhandler_console::open (int flags, mode_t)
setenv ("TERM", "cygwin", 1);
}
- DWORD cflags;
- if (GetConsoleMode (get_handle (), &cflags))
- SetConsoleMode (get_handle (), ENABLE_WINDOW_INPUT
- | ((wincap.has_con_24bit_colors () && !con_is_legacy) ?
- 0 : ENABLE_MOUSE_INPUT)
- | cflags);
+ set_input_mode (tty::cygwin, &get_ttyp ()->ti, &handle_set);
+ set_output_mode (tty::cygwin, &get_ttyp ()->ti, &handle_set);
debug_printf ("opened conin$ %p, conout$ %p", get_handle (),
get_output_handle ());
@@ -1376,7 +1368,7 @@ fhandler_console::close ()
acquire_output_mutex (INFINITE);
- if (shared_console_info && wincap.has_con_24bit_colors ())
+ if (shared_console_info)
{
/* Restore console mode if this is the last closure. */
OBJECT_BASIC_INFORMATION obi;
@@ -1386,8 +1378,8 @@ fhandler_console::close ()
if ((NT_SUCCESS (status) && obi.HandleCount == 1)
|| myself->pid == con.owner)
{
- request_xterm_mode_output (false, &handle_set);
- request_xterm_mode_input (false, &handle_set);
+ set_output_mode (tty::restore, &get_ttyp ()->ti, &handle_set);
+ set_input_mode (tty::restore, &get_ttyp ()->ti, &handle_set);
}
}
@@ -1561,154 +1553,19 @@ fhandler_console::tcflush (int queue)
return res;
}
-int
-fhandler_console::output_tcsetattr (int, struct termios const *t)
-{
- /* All the output bits we can ignore */
-
- acquire_output_mutex (INFINITE);
- DWORD flags = ENABLE_PROCESSED_OUTPUT | ENABLE_WRAP_AT_EOL_OUTPUT;
-
- DWORD oflags;
- acquire_attach_mutex (INFINITE);
- GetConsoleMode (get_output_handle (), &oflags);
- if (wincap.has_con_24bit_colors () && !con_is_legacy
- && (oflags & ENABLE_VIRTUAL_TERMINAL_PROCESSING))
- flags |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
-
- int res = SetConsoleMode (get_output_handle (), flags) ? 0 : -1;
- release_attach_mutex ();
- if (res)
- __seterrno_from_win_error (GetLastError ());
- release_output_mutex ();
- syscall_printf ("%d = tcsetattr(,%p) (ENABLE FLAGS %y) (lflag %y oflag %y)",
- res, t, flags, t->c_lflag, t->c_oflag);
- return res;
-}
-
-int
-fhandler_console::input_tcsetattr (int, struct termios const *t)
-{
- /* Ignore the optional_actions stuff, since all output is emitted
- instantly */
- acquire_input_mutex (INFINITE);
-
- DWORD oflags;
-
- acquire_attach_mutex (INFINITE);
- if (!GetConsoleMode (get_handle (), &oflags))
- oflags = 0;
- DWORD flags = 0;
-
-#if 0
- /* Enable/disable LF -> CRLF conversions */
- rbinary ((t->c_iflag & INLCR) ? false : true);
-#endif
-
- /* There's some disparity between what we need and what's
- available. We've got ECHO and ICANON, they've
- got ENABLE_ECHO_INPUT and ENABLE_LINE_INPUT. */
-
- termios_printf ("this %p, get_ttyp () %p, t %p", this, get_ttyp (), t);
- get_ttyp ()->ti = *t;
-
- if (t->c_lflag & ECHO)
- {
- flags |= ENABLE_ECHO_INPUT;
- }
- if (t->c_lflag & ICANON)
- {
- flags |= ENABLE_LINE_INPUT;
- }
-
- if (flags & ENABLE_ECHO_INPUT
- && !(flags & ENABLE_LINE_INPUT))
- {
- /* This is illegal, so turn off the echo here, and fake it
- when we read the characters */
-
- flags &= ~ENABLE_ECHO_INPUT;
- }
-
- if ((t->c_lflag & ISIG) && !(t->c_iflag & IGNBRK))
- {
- flags |= ENABLE_PROCESSED_INPUT;
- }
-
- flags |= ENABLE_WINDOW_INPUT |
- ((wincap.has_con_24bit_colors () && !con_is_legacy) ?
- 0 : ENABLE_MOUSE_INPUT);
-
- if (wincap.has_con_24bit_colors () && !con_is_legacy
- && (oflags & ENABLE_VIRTUAL_TERMINAL_INPUT))
- flags |= ENABLE_VIRTUAL_TERMINAL_INPUT;
-
- int res;
- if (flags == oflags)
- res = 0;
- else
- {
- res = SetConsoleMode (get_handle (), flags) ? 0 : -1;
- if (res < 0)
- __seterrno ();
- syscall_printf ("%d = tcsetattr(,%p) enable flags %y, c_lflag %y iflag %y",
- res, t, flags, t->c_lflag, t->c_iflag);
- }
- release_attach_mutex ();
-
- get_ttyp ()->rstcons (false);
- release_input_mutex ();
- return res;
-}
-
int
fhandler_console::tcsetattr (int a, struct termios const *t)
{
- int res = output_tcsetattr (a, t);
- if (res != 0)
- return res;
- return input_tcsetattr (a, t);
+ get_ttyp ()->ti = *t;
+ return 0;
}
int
fhandler_console::tcgetattr (struct termios *t)
{
- int res;
*t = get_ttyp ()->ti;
-
t->c_cflag |= CS8;
-
- DWORD flags;
-
- acquire_attach_mutex (INFINITE);
- if (!GetConsoleMode (get_handle (), &flags))
- {
- __seterrno ();
- res = -1;
- }
- else
- {
- if (flags & ENABLE_ECHO_INPUT)
- t->c_lflag |= ECHO;
-
- if (flags & ENABLE_LINE_INPUT)
- t->c_lflag |= ICANON;
-
- if (flags & ENABLE_PROCESSED_INPUT)
- t->c_lflag |= ISIG;
- else
- t->c_iflag |= IGNBRK;
-
- /* What about ENABLE_WINDOW_INPUT
- and ENABLE_MOUSE_INPUT ? */
-
- /* All the output bits we can ignore */
- res = 0;
- }
- release_attach_mutex ();
- syscall_printf ("%d = tcgetattr(%p) enable flags %y, t->lflag %y, t->iflag %y",
- res, t, flags, t->c_lflag, t->c_iflag);
- return res;
+ return 0;
}
fhandler_console::fhandler_console (fh_devices unit) :
@@ -3205,22 +3062,10 @@ fhandler_console::write (const void *vsrc, size_t len)
acquire_attach_mutex (INFINITE);
push_process_state process_state (PID_TTYOU);
- acquire_output_mutex (INFINITE);
- /* If system has 24 bit color capability, use xterm compatible mode. */
- if (wincap.has_con_24bit_colors ())
- request_xterm_mode_output (true, &handle_set);
- if (wincap.has_con_24bit_colors () && !con_is_legacy)
- {
- DWORD dwMode;
- GetConsoleMode (get_output_handle (), &dwMode);
- if (!(get_ttyp ()->ti.c_oflag & OPOST) ||
- !(get_ttyp ()->ti.c_oflag & ONLCR))
- dwMode |= DISABLE_NEWLINE_AUTO_RETURN;
- else
- dwMode &= ~DISABLE_NEWLINE_AUTO_RETURN;
- SetConsoleMode (get_output_handle (), dwMode);
- }
+ set_output_mode (tty::cygwin, &get_ttyp ()->ti, &handle_set);
+
+ acquire_output_mutex (INFINITE);
/* Run and check for ansi sequences */
unsigned const char *src = (unsigned char *) vsrc;
diff --git a/winsup/cygwin/select.cc b/winsup/cygwin/select.cc
index dc75a2dbf..085de6deb 100644
--- a/winsup/cygwin/select.cc
+++ b/winsup/cygwin/select.cc
@@ -1147,8 +1147,8 @@ static int
console_startup (select_record *me, select_stuff *stuff)
{
fhandler_console *fh = (fhandler_console *) me->fh;
- if (wincap.has_con_24bit_colors ())
- fhandler_console::request_xterm_mode_input (true, fh->get_handle_set ());
+ fhandler_console::set_input_mode (tty::cygwin, &((tty *)fh->tc ())->ti,
+ fh->get_handle_set ());
select_console_info *ci = stuff->device_specific_console;
if (ci->start)
diff --git a/winsup/cygwin/spawn.cc b/winsup/cygwin/spawn.cc
index 4d4d599ca..323630fcb 100644
--- a/winsup/cygwin/spawn.cc
+++ b/winsup/cygwin/spawn.cc
@@ -607,6 +607,7 @@ child_info_spawn::worker (const char *prog_arg, const char *const *argv,
fhandler_pty_slave *ptys_primary = NULL;
fhandler_console *cons_native = NULL;
+ termios *cons_ti = NULL;
for (int i = 0; i < 3; i ++)
{
const int chk_order[] = {1, 0, 2};
@@ -621,16 +622,19 @@ child_info_spawn::worker (const char *prog_arg, const char *const *argv,
else if (fh && fh->get_major () == DEV_CONS_MAJOR)
{
fhandler_console *cons = (fhandler_console *) fh;
- if (wincap.has_con_24bit_colors () && !iscygwin ())
+ if (!iscygwin ())
{
if (cons_native == NULL)
- cons_native = cons;
+ {
+ cons_native = cons;
+ cons_ti = &((tty *)cons->tc ())->ti;
+ }
if (fd == 0)
- fhandler_console::request_xterm_mode_input (false,
- cons->get_handle_set ());
+ fhandler_console::set_input_mode (tty::native,
+ cons_ti, cons->get_handle_set ());
else if (fd == 1 || fd == 2)
- fhandler_console::request_xterm_mode_output (false,
- cons->get_handle_set ());
+ fhandler_console::set_output_mode (tty::native,
+ cons_ti, cons->get_handle_set ());
}
}
}
@@ -996,10 +1000,10 @@ child_info_spawn::worker (const char *prog_arg, const char *const *argv,
}
if (cons_native)
{
- fhandler_console::request_xterm_mode_output (true,
- &cons_handle_set);
- fhandler_console::request_xterm_mode_input (true,
- &cons_handle_set);
+ fhandler_console::set_output_mode (tty::cygwin, cons_ti,
+ &cons_handle_set);
+ fhandler_console::set_input_mode (tty::cygwin, cons_ti,
+ &cons_handle_set);
fhandler_console::close_handle_set (&cons_handle_set);
}
myself.exit (EXITCODE_NOSET);
@@ -1031,10 +1035,10 @@ child_info_spawn::worker (const char *prog_arg, const char *const *argv,
}
if (cons_native)
{
- fhandler_console::request_xterm_mode_output (true,
- &cons_handle_set);
- fhandler_console::request_xterm_mode_input (true,
- &cons_handle_set);
+ fhandler_console::set_output_mode (tty::cygwin, cons_ti,
+ &cons_handle_set);
+ fhandler_console::set_input_mode (tty::cygwin, cons_ti,
+ &cons_handle_set);
fhandler_console::close_handle_set (&cons_handle_set);
}
break;
diff --git a/winsup/cygwin/tty.h b/winsup/cygwin/tty.h
index a8ddd68d6..4ef1e04c9 100644
--- a/winsup/cygwin/tty.h
+++ b/winsup/cygwin/tty.h
@@ -39,7 +39,6 @@ class tty_min
struct status_flags
{
unsigned initialized : 1; /* Set if tty is initialized */
- unsigned rstcons : 1; /* Set if console needs to be set to "non-cooked" */
} status;
public:
@@ -51,7 +50,6 @@ public:
int last_sig;
IMPLEMENT_STATUS_FLAG (bool, initialized)
- IMPLEMENT_STATUS_FLAG (bool, rstcons)
struct termios ti;
struct winsize winsize;
@@ -97,6 +95,12 @@ public:
to_cyg,
to_nat
};
+ enum cons_mode
+ {
+ restore, /* For restoring when exit from cygwin. */
+ cygwin, /* For cygwin apps */
+ native /* For native apps executed from cygwin. */
+ };
private:
HANDLE _from_master;
--
2.30.0
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