1 /* Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If
16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
17 Cambridge, MA 02139, USA. */
24 #include <hurd/port.h>
25 #include "set-hooks.h"
26 #include "hurdmalloc.h" /* XXX */
30 struct hurd_port *_hurd_ports;
31 unsigned int _hurd_nports;
35 _hurd_ports_use (int which, error_t (*operate) (mach_port_t))
37 return HURD_PORT_USE (&_hurd_ports[which], (*operate) (port));
40 void _hurd_proc_init (char **argv);
42 DEFINE_HOOK (_hurd_subinit, (void));
44 /* Initialize the library data structures from the
45 ints and ports passed to us by the exec server.
47 PORTARRAY and INTARRAY are vm_deallocate'd. */
50 _hurd_init (int flags, char **argv,
51 mach_port_t *portarray, size_t portarraysize,
52 int *intarray, size_t intarraysize)
56 _hurd_exec_flags = flags;
58 _hurd_ports = malloc (portarraysize * sizeof (*_hurd_ports));
59 if (_hurd_ports == NULL)
60 __libc_fatal ("Can't allocate _hurd_ports\n");
61 _hurd_nports = portarraysize;
63 /* See what ports we were passed. */
64 for (i = 0; i < portarraysize; ++i)
65 _hurd_port_init (&_hurd_ports[i], portarray[i]);
67 /* When the user asks for the bootstrap port,
68 he will get the one the exec server passed us. */
69 __task_set_special_port (__mach_task_self (), TASK_BOOTSTRAP_PORT,
70 portarray[INIT_PORT_BOOTSTRAP]);
72 /* Tell the proc server we exist, if it does. */
73 if (portarray[INIT_PORT_PROC] != MACH_PORT_NULL)
74 _hurd_proc_init (argv);
76 if (intarraysize > INIT_UMASK)
77 _hurd_umask = intarray[INIT_UMASK] & 0777;
81 /* All done with init ints and ports. */
82 __vm_deallocate (__mach_task_self (),
83 (vm_address_t) intarray,
84 intarraysize * sizeof (int));
85 __vm_deallocate (__mach_task_self (),
86 (vm_address_t) portarray,
87 portarraysize * sizeof (mach_port_t));
89 if (flags & EXEC_SECURE)
90 /* XXX if secure exec, elide environment variables
91 which the library uses and could be security holes.
95 /* Call other things which want to do some initialization. These are not
96 on the __libc_subinit hook because things there like to be able to
97 assume the availability of the POSIX.1 services we provide. */
98 RUN_HOOK (_hurd_subinit, ());
101 #include <hurd/signal.h>
103 /* The user can do "int _hide_arguments = 1;" to make
104 sure the arguments are never visible with `ps'. */
105 int _hide_arguments, _hide_environment;
107 /* Hook for things which should be initialized as soon as the proc
108 server is available. */
109 DEFINE_HOOK (_hurd_proc_subinit, (void));
111 /* Do startup handshaking with the proc server just installed in _hurd_ports.
112 Call _hurdsig_init to set up signal processing. */
115 _hurd_proc_init (char **argv)
118 struct hurd_userlink ulink;
119 process_t procserver;
121 /* Initialize the signal code; Mach exceptions will become signals. */
124 /* The signal thread is now prepared to receive messages.
125 It is safe to give the port to the proc server. */
127 procserver = _hurd_port_get (&_hurd_ports[INIT_PORT_PROC], &ulink);
129 /* Give the proc server our message port. */
130 __proc_setmsgport (procserver, _hurd_msgport, &oldmsg);
131 if (oldmsg != MACH_PORT_NULL)
132 /* Deallocate the old msg port we replaced. */
133 __mach_port_deallocate (__mach_task_self (), oldmsg);
135 /* Tell the proc server where our args and environment are. */
136 __proc_set_arg_locations (procserver,
137 _hide_arguments ? 0 : (vm_address_t) argv,
138 _hide_environment ? 0 : (vm_address_t) __environ);
140 _hurd_port_free (&_hurd_ports[INIT_PORT_PROC], &ulink, procserver);
142 /* Initialize proc server-assisted fault recovery for the signal thread. */
143 _hurdsig_fault_init ();
145 /* Call other things which want to do some initialization. These are not
146 on the _hurd_subinit hook because things there assume that things done
147 here, like _hurd_pid, are already initialized. */
148 RUN_HOOK (_hurd_proc_subinit, ());
150 if (_hurd_exec_flags & EXEC_TRACED)
151 /* This process is "traced", meaning it should stop on signals or exec.
152 We are all set up now to handle signals. Stop ourselves, to inform
153 our parent (presumably a debugger) that the exec has completed. */
154 _hurd_raise_signal (NULL, SIGTRAP, 0, 0);
157 /* Called when we get a message telling us to change our proc server port. */
160 _hurd_setproc (process_t procserver)
165 /* Give the proc server our message port. */
166 if (err = __proc_setmsgport (procserver, _hurd_msgport, &oldmsg))
168 if (oldmsg != MACH_PORT_NULL)
169 /* Deallocate the old msg port we replaced. */
170 __mach_port_deallocate (__mach_task_self (), oldmsg);
172 /* Tell the proc server where our args and environment are. */
173 if (err = __proc_set_arg_locations (procserver,
174 /* We don't know the ARGV location. */
176 _hide_environment ? 0 :
177 (vm_address_t) __environ))
180 /* Those calls worked, so the port looks good. */
181 _hurd_port_set (&_hurd_ports[INIT_PORT_PROC], procserver);
184 pid_t oldpgrp = _hurd_pgrp;
186 /* Call these functions again so they can fetch the
187 new information from the new proc server. */
188 RUN_HOOK (_hurd_proc_subinit, ());
190 if (_hurd_pgrp != oldpgrp)
192 /* Run things that want notification of a pgrp change. */
193 DECLARE_HOOK (_hurd_pgrp_changed_hook, (pid_t));
194 RUN_HOOK (_hurd_pgrp_changed_hook, (_hurd_pgrp));