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Cygwin: console: Add code to restore console mode on close.

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- The console with 24bit color support has a problem that console
  mode is changed if cygwin process is executed in cmd.exe which
  started in cygwin shell. For example, cursor keys become not
  working if bash -> cmd -> true are executed in this order.
  This patch fixes the issue.
This commit is contained in:
Takashi Yano 2020-01-02 22:17:16 +09:00 committed by Ken Brown
parent 525eb06a98
commit 9e28f50097
1 changed files with 21 additions and 0 deletions
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21
winsup/cygwin/fhandler_console.cc
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@ -53,6 +53,9 @@ fhandler_console::console_state NO_COPY *fhandler_console::shared_console_info;
bool NO_COPY fhandler_console::invisible_console;
static DWORD orig_conin_mode = (DWORD) -1;
static DWORD orig_conout_mode = (DWORD) -1;
static void
beep ()
{
@ -1010,6 +1013,11 @@ fhandler_console::open (int flags, mode_t)
get_ttyp ()->rstcons (false);
set_open_status ();
if (orig_conin_mode == (DWORD) -1)
GetConsoleMode (get_handle (), &orig_conin_mode);
if (orig_conout_mode == (DWORD) -1)
GetConsoleMode (get_output_handle (), &orig_conout_mode);
if (getpid () == con.owner && wincap.has_con_24bit_colors ())
{
DWORD dwMode;
@ -1079,6 +1087,19 @@ fhandler_console::close ()
SetConsoleMode (get_output_handle (), dwMode);
}
/* Restore console mode if this is the last closure. */
OBJECT_BASIC_INFORMATION obi;
NTSTATUS status;
status = NtQueryObject (get_handle (), ObjectBasicInformation,
&obi, sizeof obi, NULL);
if (NT_SUCCESS (status) && obi.HandleCount == 1)
{
if (orig_conin_mode != (DWORD) -1)
SetConsoleMode (get_handle (), orig_conin_mode);
if (orig_conout_mode != (DWORD) -1)
SetConsoleMode (get_handle (), orig_conout_mode);
}
CloseHandle (get_handle ());
CloseHandle (get_output_handle ());