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initial import
This commit is contained in:
Roland McGrath
193
hurd/hurdinit.c
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193
hurd/hurdinit.c
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/* Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <hurd.h>
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#include <hurd/port.h>
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#include "set-hooks.h"
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#include "hurdmalloc.h" /* XXX */
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int _hurd_exec_flags;
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struct hurd_port *_hurd_ports;
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unsigned int _hurd_nports;
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mode_t _hurd_umask;
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void _hurd_proc_init (char **argv);
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DEFINE_HOOK (_hurd_subinit, (void));
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/* Initialize the library data structures from the
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ints and ports passed to us by the exec server.
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PORTARRAY and INTARRAY are vm_deallocate'd. */
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void
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_hurd_init (int flags, char **argv,
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mach_port_t *portarray, size_t portarraysize,
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int *intarray, size_t intarraysize)
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{
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int i;
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_hurd_exec_flags = flags;
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_hurd_ports = malloc (portarraysize * sizeof (*_hurd_ports));
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if (_hurd_ports == NULL)
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__libc_fatal ("Can't allocate _hurd_ports\n");
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_hurd_nports = portarraysize;
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/* See what ports we were passed. */
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for (i = 0; i < portarraysize; ++i)
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_hurd_port_init (&_hurd_ports[i], portarray[i]);
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/* When the user asks for the bootstrap port,
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he will get the one the exec server passed us. */
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__task_set_special_port (__mach_task_self (), TASK_BOOTSTRAP_PORT,
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portarray[INIT_PORT_BOOTSTRAP]);
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/* Tell the proc server we exist, if it does. */
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if (portarray[INIT_PORT_PROC] != MACH_PORT_NULL)
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_hurd_proc_init (argv);
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if (intarraysize > INIT_UMASK)
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_hurd_umask = intarray[INIT_UMASK] & 0777;
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else
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_hurd_umask = CMASK;
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/* All done with init ints and ports. */
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__vm_deallocate (__mach_task_self (),
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(vm_address_t) intarray,
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intarraysize * sizeof (int));
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__vm_deallocate (__mach_task_self (),
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(vm_address_t) portarray,
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portarraysize * sizeof (mach_port_t));
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if (flags & EXEC_SECURE)
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/* XXX if secure exec, elide environment variables
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which the library uses and could be security holes.
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CORESERVER, COREFILE
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*/ ;
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/* Call other things which want to do some initialization. These are not
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on the __libc_subinit hook because things there like to be able to
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assume the availability of the POSIX.1 services we provide. */
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RUN_HOOK (_hurd_subinit, ());
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}
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#include <hurd/signal.h>
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/* The user can do "int _hide_arguments = 1;" to make
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sure the arguments are never visible with `ps'. */
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int _hide_arguments, _hide_environment;
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/* Hook for things which should be initialized as soon as the proc
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server is available. */
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DEFINE_HOOK (_hurd_proc_subinit, (void));
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/* Do startup handshaking with the proc server just installed in _hurd_ports.
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Call _hurdsig_init to set up signal processing. */
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void
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_hurd_proc_init (char **argv)
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{
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mach_port_t oldmsg;
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struct hurd_userlink ulink;
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process_t procserver;
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/* Initialize the signal code; Mach exceptions will become signals. */
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_hurdsig_init ();
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/* The signal thread is now prepared to receive messages.
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It is safe to give the port to the proc server. */
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procserver = _hurd_port_get (&_hurd_ports[INIT_PORT_PROC], &ulink);
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/* Give the proc server our message port. */
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__proc_setmsgport (procserver, _hurd_msgport, &oldmsg);
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if (oldmsg != MACH_PORT_NULL)
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/* Deallocate the old msg port we replaced. */
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__mach_port_deallocate (__mach_task_self (), oldmsg);
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/* Tell the proc server where our args and environment are. */
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__proc_set_arg_locations (procserver,
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_hide_arguments ? 0 : (vm_address_t) argv,
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_hide_environment ? 0 : (vm_address_t) __environ);
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_hurd_port_free (&_hurd_ports[INIT_PORT_PROC], &ulink, procserver);
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/* Initialize proc server-assisted fault recovery for the signal thread. */
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_hurdsig_fault_init ();
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/* Call other things which want to do some initialization. These are not
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on the _hurd_subinit hook because things there assume that things done
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here, like _hurd_pid, are already initialized. */
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RUN_HOOK (_hurd_proc_subinit, ());
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if (_hurd_exec_flags & EXEC_TRACED)
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/* This process is "traced", meaning it should stop on signals or exec.
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We are all set up now to handle signals. Stop ourselves, to inform
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our parent (presumably a debugger) that the exec has completed. */
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_hurd_raise_signal (NULL, SIGTRAP, 0, 0);
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}
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/* Called when we get a message telling us to change our proc server port. */
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error_t
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_hurd_setproc (process_t procserver)
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{
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error_t err;
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mach_port_t oldmsg;
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/* Give the proc server our message port. */
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if (err = __proc_setmsgport (procserver, _hurd_msgport, &oldmsg))
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return err;
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if (oldmsg != MACH_PORT_NULL)
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/* Deallocate the old msg port we replaced. */
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__mach_port_deallocate (__mach_task_self (), oldmsg);
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/* Tell the proc server where our args and environment are. */
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if (err = __proc_set_arg_locations (procserver,
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/* We don't know the ARGV location. */
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(vm_address_t) 0,
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_hide_environment ? 0 :
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(vm_address_t) __environ))
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return err;
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/* Those calls worked, so the port looks good. */
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_hurd_port_set (&_hurd_ports[INIT_PORT_PROC], procserver);
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{
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pid_t oldpgrp = _hurd_pgrp;
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/* Call these functions again so they can fetch the
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new information from the new proc server. */
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RUN_HOOK (_hurd_proc_subinit, ());
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if (_hurd_pgrp != oldpgrp)
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{
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/* Run things that want notification of a pgrp change. */
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DECLARE_HOOK (_hurd_pgrp_changed_hook, (pid_t));
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RUN_HOOK (_hurd_pgrp_changed_hook, (_hurd_pgrp));
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}
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}
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return 0;
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}
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