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Cygwin: pty: Disable FreeConsole() on close for non cygwin process. 

- After commit e1a0775dc0, the problem
  reported in https://www.cygwin.com/ml/cygwin/2020-01/msg00093.html
  occurs. For Gnu scren and tmux, calling FreeConsole() on pty close
  is necessary. However, if FreeConsole() is called, cygwin setup
  with '-h' option does not work. Therefore, the commit
  e1a0775dc0 delayed closing pty.
  This is the cause of the problem above. Now, instead of delaying
  pty close, FreeConsole() is not called if the process is non cygwin
  processes such as cygwin setup.
This commit is contained in:
Takashi Yano 2020-01-10 20:46:26 +09:00 committed by Ken Brown
parent 9e28f50097
commit 145c1db7f8
3 changed files with 16 additions and 4 deletions
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1
winsup/cygwin/fhandler.h
View File

@ -2206,6 +2206,7 @@ class fhandler_pty_slave: public fhandler_pty_common
return get_ttyp ()->ti.c_lflag & ICANON;
}
void setup_locale (void);
void set_freeconsole_on_close (bool val);
};
#define __ptsname(buf, unit) __small_sprintf ((buf), "/dev/pty%d", (unit))

13
winsup/cygwin/fhandler_tty.cc
View File

@ -66,6 +66,7 @@ struct pipe_reply {
static int pcon_attached_to = -1;
static bool isHybrid;
static bool do_not_reset_switch_to_pcon;
static bool freeconsole_on_close = true;
#if USE_API_HOOK
static void
@ -725,7 +726,8 @@ fhandler_pty_slave::~fhandler_pty_slave ()
if (used == 0)
{
init_console_handler (false);
FreeConsole ();
if (freeconsole_on_close)
FreeConsole ();
}
}
}
@ -2660,6 +2662,12 @@ fhandler_pty_slave::setup_locale (void)
}
}
void
fhandler_pty_slave::set_freeconsole_on_close (bool val)
{
freeconsole_on_close = val;
}
void
fhandler_pty_slave::fixup_after_attach (bool native_maybe, int fd_set)
{
@ -2783,7 +2791,8 @@ fhandler_pty_slave::fixup_after_exec ()
if (used == 1 /* About to close this tty */)
{
init_console_handler (false);
FreeConsole ();
if (freeconsole_on_close)
FreeConsole ();
}
}

6
winsup/cygwin/spawn.cc
View File

@ -607,6 +607,8 @@ child_info_spawn::worker (const char *prog_arg, const char *const *argv,
attach_to_console = true;
}
ptys->fixup_after_attach (!iscygwin (), fd);
if (mode == _P_OVERLAY)
ptys->set_freeconsole_on_close (iscygwin ());
}
}
else if (fh && fh->get_major () == DEV_CONS_MAJOR)
@ -809,6 +811,8 @@ child_info_spawn::worker (const char *prog_arg, const char *const *argv,
NtClose (old_winpid_hdl);
real_path.get_wide_win32_path (myself->progname); // FIXME: race?
sigproc_printf ("new process name %W", myself->progname);
if (!iscygwin ())
close_all_files ();
}
else
{
@ -907,8 +911,6 @@ child_info_spawn::worker (const char *prog_arg, const char *const *argv,
wait_for_myself ();
}
myself.exit (EXITCODE_NOSET);
if (!iscygwin ())
close_all_files ();
break;
case _P_WAIT:
case _P_SYSTEM: