Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 225 insertions, 0 deletions

diff --git a/REORG.TODO/hurd/hurdinit.c b/REORG.TODO/hurd/hurdinit.c
new file mode 100644
index 0000000000..5afdfbc890
--- /dev/null
+++ b/REORG.TODO/hurd/hurdinit.c
@@ -0,0 +1,225 @@
+/* Copyright (C) 1992-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <hurd.h>
+#include <hurd/port.h>
+#include "set-hooks.h"
+#include "hurdmalloc.h"		/* XXX */
+
+
+int _hurd_exec_flags;
+struct hurd_port *_hurd_ports;
+unsigned int _hurd_nports;
+mode_t _hurd_umask;
+sigset_t _hurdsig_traced;
+
+char **__libc_argv;
+int __libc_argc;
+
+
+error_t
+_hurd_ports_use (int which, error_t (*operate) (mach_port_t))
+{
+  if (__glibc_unlikely (_hurd_ports == NULL))
+    /* This means that _hurd_init has not been called yet, which is
+       normally only the case in the bootstrap filesystem, and there
+       only in the early phases of booting.  */
+    return EGRATUITOUS;
+
+  return HURD_PORT_USE (&_hurd_ports[which], (*operate) (port));
+}
+
+DEFINE_HOOK (_hurd_subinit, (void));
+
+__typeof (_hurd_proc_init) _hurd_new_proc_init;	/* below */
+
+/* Initialize the library data structures from the
+   ints and ports passed to us by the exec server.
+
+   PORTARRAY and INTARRAY are vm_deallocate'd.  */
+
+void
+_hurd_init (int flags, char **argv,
+	    mach_port_t *portarray, size_t portarraysize,
+	    int *intarray, size_t intarraysize)
+{
+  size_t i;
+
+  _hurd_exec_flags = flags;
+
+  _hurd_ports = malloc (portarraysize * sizeof (*_hurd_ports));
+  if (_hurd_ports == NULL)
+    __libc_fatal ("Can't allocate _hurd_ports\n");
+  _hurd_nports = portarraysize;
+
+  /* See what ports we were passed.  */
+  for (i = 0; i < portarraysize; ++i)
+    _hurd_port_init (&_hurd_ports[i], portarray[i]);
+
+  /* When the user asks for the bootstrap port,
+     he will get the one the exec server passed us.  */
+  __task_set_special_port (__mach_task_self (), TASK_BOOTSTRAP_PORT,
+			   portarray[INIT_PORT_BOOTSTRAP]);
+
+  if (intarraysize > INIT_UMASK)
+    _hurd_umask = intarray[INIT_UMASK] & 0777;
+  else
+    _hurd_umask = CMASK;
+
+  if (intarraysize > INIT_TRACEMASK)
+    _hurdsig_traced = intarray[INIT_TRACEMASK];
+
+  /* Tell the proc server we exist, if it does.  */
+  if (portarray[INIT_PORT_PROC] != MACH_PORT_NULL)
+    _hurd_new_proc_init (argv, intarray, intarraysize);
+
+  /* All done with init ints and ports.  */
+  __vm_deallocate (__mach_task_self (),
+		   (vm_address_t) intarray,
+		   intarraysize * sizeof (int));
+  __vm_deallocate (__mach_task_self (),
+		   (vm_address_t) portarray,
+		   portarraysize * sizeof (mach_port_t));
+
+  if (flags & EXEC_SECURE)
+    /* XXX if secure exec, elide environment variables
+       which the library uses and could be security holes.
+       CORESERVER, COREFILE
+       */ ;
+
+  /* Call other things which want to do some initialization.  These are not
+     on the __libc_subinit hook because things there like to be able to
+     assume the availability of the POSIX.1 services we provide.  */
+  RUN_HOOK (_hurd_subinit, ());
+}
+
+#include <hurd/signal.h>
+
+/* The user can do "int _hide_arguments = 1;" to make
+   sure the arguments are never visible with `ps'.  */
+int _hide_arguments, _hide_environment;
+
+/* Hook for things which should be initialized as soon as the proc
+   server is available.  */
+DEFINE_HOOK (_hurd_proc_subinit, (void));
+
+/* Do startup handshaking with the proc server just installed in _hurd_ports.
+   Call _hurdsig_init to set up signal processing.  */
+
+void
+_hurd_new_proc_init (char **argv,
+		     const int *intarray, size_t intarraysize)
+{
+  mach_port_t oldmsg;
+  struct hurd_userlink ulink;
+  process_t procserver;
+
+  /* Initialize the signal code; Mach exceptions will become signals.  */
+  _hurdsig_init (intarray, intarraysize);
+
+  /* The signal thread is now prepared to receive messages.
+     It is safe to give the port to the proc server.  */
+
+  procserver = _hurd_port_get (&_hurd_ports[INIT_PORT_PROC], &ulink);
+
+  /* Give the proc server our message port.  */
+  __proc_setmsgport (procserver, _hurd_msgport, &oldmsg);
+  if (oldmsg != MACH_PORT_NULL)
+    /* Deallocate the old msg port we replaced.  */
+    __mach_port_deallocate (__mach_task_self (), oldmsg);
+
+  /* Tell the proc server where our args and environment are.  */
+  __proc_set_arg_locations (procserver,
+			    _hide_arguments ? 0 : (vm_address_t) argv,
+			    _hide_environment ? 0 : (vm_address_t) __environ);
+
+  _hurd_port_free (&_hurd_ports[INIT_PORT_PROC], &ulink, procserver);
+
+  /* Initialize proc server-assisted fault recovery for the signal thread.  */
+  _hurdsig_fault_init ();
+
+  /* Call other things which want to do some initialization.  These are not
+     on the _hurd_subinit hook because things there assume that things done
+     here, like _hurd_pid, are already initialized.  */
+  RUN_HOOK (_hurd_proc_subinit, ());
+
+  /* XXX This code should probably be removed entirely at some point.  This
+     conditional should make it reasonably usable with old gdb's for a
+     while.  Eventually it probably makes most sense for the exec server to
+     mask out EXEC_SIGTRAP so the debugged program is closer to not being
+     able to tell it's being debugged.  */
+  if (!__sigisemptyset (&_hurdsig_traced)
+#ifdef EXEC_SIGTRAP
+      && !(_hurd_exec_flags & EXEC_SIGTRAP)
+#endif
+      )
+    /* This process is "traced", meaning it should stop on signals or exec.
+       We are all set up now to handle signals.  Stop ourselves, to inform
+       our parent (presumably a debugger) that the exec has completed.  */
+    __msg_sig_post (_hurd_msgport, SIGTRAP, 0, __mach_task_self ());
+}
+
+#include <shlib-compat.h>
+versioned_symbol (libc, _hurd_new_proc_init, _hurd_proc_init, GLIBC_2_1);
+
+/* Called when we get a message telling us to change our proc server port.  */
+
+error_t
+_hurd_setproc (process_t procserver)
+{
+  error_t err;
+  mach_port_t oldmsg;
+
+  /* Give the proc server our message port.  */
+  if (err = __proc_setmsgport (procserver, _hurd_msgport, &oldmsg))
+    return err;
+  if (oldmsg != MACH_PORT_NULL)
+    /* Deallocate the old msg port we replaced.  */
+    __mach_port_deallocate (__mach_task_self (), oldmsg);
+
+  /* Tell the proc server where our args and environment are.  */
+  if (err = __proc_set_arg_locations (procserver,
+				      _hide_arguments ? 0 :
+				      (vm_address_t) __libc_argv,
+				      _hide_environment ? 0 :
+				      (vm_address_t) __environ))
+    return err;
+
+  /* Those calls worked, so the port looks good.  */
+  _hurd_port_set (&_hurd_ports[INIT_PORT_PROC], procserver);
+
+  {
+    pid_t oldpgrp = _hurd_pgrp;
+
+    /* Call these functions again so they can fetch the
+       new information from the new proc server.  */
+    RUN_HOOK (_hurd_proc_subinit, ());
+
+    if (_hurd_pgrp != oldpgrp)
+      {
+	/* Run things that want notification of a pgrp change.  */
+	DECLARE_HOOK (_hurd_pgrp_changed_hook, (pid_t));
+	RUN_HOOK (_hurd_pgrp_changed_hook, (_hurd_pgrp));
+      }
+  }
+
+  return 0;
+}