* cygheap.cc (cygheap::close_ctty): Close ctty via close_with_arch().

* debug.cc (close_handle): Call debugger on failure.
* devices.in (device::tty_to_real_device): Delete.
* devices.h (device::tty_to_real_device): Ditto.
* devices.cc: Regenerate.
* dtable.cc: Delete old ifdef'ed vfork code.
(dtable::release): Don't handle archetype here.
(dtable::init_std_file_from_handle): Consolidate console tests.  Generate
major/minor for tty ASAP.  Fix incorrect setting of DEV_TTYS* for serial.
(fh_alloc): New function derived from build_fh_pc.  Pass current tty when
building tty.
(build_pc_pc): Use fh_alloc to create.  Set name from fh->dev if appropriate.
Generate an archetype or point to one here.
(dtable::dup_worker): Deal with archetypes.  Rely on = operator copying whole
class rather than just fhandler_base.
(dtable::fixup_after_exec): Call close_with_arch to handle closing of fhandlers
with archetypes.
* fhandler.cc (fhandler_base::operator =): Call memcpy with fhandler's size()
rather than sizeof fhandler_base.
(fhandler_base::open_with_arch): New function.  Handles opening of fhandler's
with archetypes, dealing with usecounts, etc.
(fhandler_base::close_with_arch): Ditto for close.
* fhandler.h: Many changes for archetypes.
(fhandler_base::set_name): Set both normalized path and regular path.
(fhandler_base::open_with_arch): New function.
(fhandler_base::open_setup): Ditto.
(fhandler_base::use_archetype): Ditto.
(fhandler_base::_archetype_usecount): Ditto.
(fhandler_*::size): Ditto.
(fhandler_dev_tape::open): Remove virtual decoration.
(fhandler_console::use_archetype): New function.  Return true.
(fhandler_console::open_setup): New function.
(fhandler_console::dup): Delete.
(fhandler_tty_slave::fhandler_tty_slave): Redeclare to take an argument.
(fhandler_tty_slave::use_archetype): New function.  Return true.
(fhandler_tty_slave::cleanup): New function.
(fhandler_pty_master::use_archetype): New function.  Return true.
(fhandler_pty_master::cleanup): New function.
(fhandler_pty_master::is_tty_master): New function.  Return false.
(fhandler_tty_master::is_tty_master): New function.  Return true.
(fhandler_dev_dsp::fhandler_dev_dsp): New function.  Return true.
(report_tty_counts): Only report on archetype's usecount if there is one.
* fhandler_console.cc (fhandler_console::get_tty_stuff): Remove handling of
setsid, set_ctty, set_flags, and manage_console_count.
(fhandler_console::open_setup): New function.  Implement functionality removed
from get_tty_stuff.
(fhandler_console::dup): Delete.
(fhandler_console::output_tcsetattr): Set errno on error.
(fhandler_console::fhandler_console): Set device early.
(fhandler_console::init): Use open_with_arch to open console handles.
(fhandler_console::fixup_after_fork_exec): Nuke most of the stuff for dealing
with console handles.
* fhandler_dsp.cc (fhandler_dev_dsp::open): Remove archetype handling.
(fhandler_dev_dsp::write): Ditto.
(fhandler_dev_dsp::read): Ditto.
(fhandler_dev_dsp::close): Ditto.
(fhandler_dev_dsp::dup): Ditto.
(fhandler_dev_dsp::ioctl): Ditto.
(fhandler_dev_dsp::fixup_after_fork): Ditto.
(fhandler_dev_dsp::fixup_after_exec): Ditto.
* fhandler_tty.cc (fhandler_tty_common::__acquire_output_mutex): Add a little
more debugging.
(fhandler_tty_common::__release_output_mutex): Ditto.
(fhandler_pty_master::process_slave_output): Ditto.  Don't do signal handling
or pthread_cancel handling in the tty master thread.
(process_output): Minor reorg.
(fhandler_tty_slave::fhandler_tty_slave): Set device based on new ntty
argument.
(fhandler_tty_slave::open): Remove archetype handling.  Move some processing
into open_setup().
(fhandler_tty_slave::open_setup): New function.
(fhandler_tty_slave::cleanup): New function.
(fhandler_tty_slave::close): Remove archetype handling.  Move some processing
into cleanup().
(fhandler_tty_slave::init): Rename argument from f to h.  Open device using
open_with_arch().  Remove archetype handling.
(fhandler_pty_master::dup): Ditto.
(fhandler_pty_master::open): Ditto.
(fhandler_pty_master::close): Ditto.  Move some handling to cleanup().
(fhandler_pty_master::cleanup): New function.
(fhandler_tty_master::init_console): Give unique name to captive console
fhandler.
* pinfo.cc (_pinfo::set_ctty): Rename argument from arch to fh.  Eliminate
archetype assumption.
* syscalls.cc (close_all_files): Use close_with_arch for closing.
(open): Use open_with_arch() rather than open().
(close): Use close_with_arch() rather than close().

winsup/cygwin/fhandler.cc

@@ -39,7 +39,7 @@ struct __cygwin_perfile *perfile_table;
 inline fhandler_base&
 fhandler_base::operator =(fhandler_base& x)
 {
-  memcpy (this, &x, sizeof *this);
+  memcpy (this, &x, size ());
   pc = x.pc;
   rabuf = NULL;
   ralen = 0;
@@ -449,6 +449,40 @@ done:
   return res;
 }
 
+int
+fhandler_base::open_with_arch (int flags, mode_t mode)
+{
+  int res;
+  close_on_exec (flags & O_CLOEXEC);
+  if (!(res = (archetype && archetype->io_handle)
+	|| open (flags, (mode & 07777) & ~cygheap->umask)))
+    {
+      if (archetype)
+	delete archetype;
+    }
+  else if (archetype)
+    {
+      if (!archetype->io_handle)
+	{
+	  usecount = 0;
+	  *archetype = *this;
+	  archetype_usecount (1);
+	  archetype->archetype = NULL;
+	}
+      else
+	{
+	  fhandler_base *arch = archetype;
+	  *this = *archetype;
+	  archetype = arch;
+	  archetype_usecount (1);
+	  usecount = 0;
+	}
+      open_setup (flags);
+    }
+
+  return res;
+}
+
 /* Open system call handler function. */
 int
 fhandler_base::open (int flags, mode_t mode)
@@ -1029,6 +1063,48 @@ fhandler_base::pwrite (void *, size_t, _off64_t)
   return -1;
 }
 
+int
+fhandler_base::close_with_arch ()
+{
+  int res;
+  fhandler_base *fh;
+  if (usecount)
+    {
+      if (!--usecount)
+	debug_printf ("closing passed in archetype, usecount %d", usecount);
+      else
+	{
+	  debug_printf ("not closing passed in archetype, usecount %d", usecount);
+	  return 0;
+	}
+      fh = this;
+    }
+  else if (!archetype)
+    fh = this;
+  else
+    {
+      cleanup ();
+      if (archetype_usecount (-1) == 0)
+	{
+	  debug_printf ("closing archetype");
+	  fh = archetype;
+	}
+      else
+	{
+	  debug_printf ("not closing archetype");
+	  return 0;
+	}
+    }
+
+  res = fh->close ();
+  if (archetype)
+    {
+      cygheap->fdtab.delete_archetype (archetype);
+      archetype = NULL;
+    }
+  return res;
+}
+
 int
 fhandler_base::close ()
 {