initial import

1 files changed, 193 insertions, 0 deletions

diff --git a/hurd/hurdinit.c b/hurd/hurdinit.c
new file mode 100644
index 0000000000..4469a17339
--- /dev/null
+++ b/hurd/hurdinit.c
@@ -0,0 +1,193 @@
+/* Copyright (C) 1992, 1993, 1994, 1995 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#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;
+
+void _hurd_proc_init (char **argv);
+
+DEFINE_HOOK (_hurd_subinit, (void));
+
+/* 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)
+{
+  int 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]);
+
+  /* Tell the proc server we exist, if it does.  */
+  if (portarray[INIT_PORT_PROC] != MACH_PORT_NULL)
+    _hurd_proc_init (argv);
+
+  if (intarraysize > INIT_UMASK)
+    _hurd_umask = intarray[INIT_UMASK] & 0777;
+  else
+    _hurd_umask = CMASK;
+
+  /* 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_proc_init (char **argv)
+{
+  mach_port_t oldmsg;
+  struct hurd_userlink ulink;
+  process_t procserver;
+
+  /* Initialize the signal code; Mach exceptions will become signals.  */
+  _hurdsig_init ();
+
+  /* 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, ());
+
+  if (_hurd_exec_flags & EXEC_TRACED)
+    /* 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.  */
+    _hurd_raise_signal (NULL, SIGTRAP, 0, 0);
+}
+
+/* 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,
+				      /* We don't know the ARGV location.  */
+				      (vm_address_t) 0,
+				      _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;
+}