1 /* Copyright (C) 1992,93,94,95,96,97,98,99 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 not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, 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
;
33 sigset_t _hurdsig_traced
;
40 _hurd_ports_use (int which
, error_t (*operate
) (mach_port_t
))
42 return HURD_PORT_USE (&_hurd_ports
[which
], (*operate
) (port
));
45 DEFINE_HOOK (_hurd_subinit
, (void));
47 /* Initialize the library data structures from the
48 ints and ports passed to us by the exec server.
50 PORTARRAY and INTARRAY are vm_deallocate'd. */
53 _hurd_init (int flags
, char **argv
,
54 mach_port_t
*portarray
, size_t portarraysize
,
55 int *intarray
, size_t intarraysize
)
59 _hurd_exec_flags
= flags
;
61 _hurd_ports
= malloc (portarraysize
* sizeof (*_hurd_ports
));
62 if (_hurd_ports
== NULL
)
63 __libc_fatal ("Can't allocate _hurd_ports\n");
64 _hurd_nports
= portarraysize
;
66 /* See what ports we were passed. */
67 for (i
= 0; i
< portarraysize
; ++i
)
68 _hurd_port_init (&_hurd_ports
[i
], portarray
[i
]);
70 /* When the user asks for the bootstrap port,
71 he will get the one the exec server passed us. */
72 __task_set_special_port (__mach_task_self (), TASK_BOOTSTRAP_PORT
,
73 portarray
[INIT_PORT_BOOTSTRAP
]);
75 if (intarraysize
> INIT_UMASK
)
76 _hurd_umask
= intarray
[INIT_UMASK
] & 0777;
80 if (intarraysize
> INIT_TRACEMASK
)
81 _hurdsig_traced
= intarray
[INIT_TRACEMASK
];
83 /* Tell the proc server we exist, if it does. */
84 if (portarray
[INIT_PORT_PROC
] != MACH_PORT_NULL
)
85 _hurd_proc_init (argv
, intarray
, intarraysize
);
87 /* All done with init ints and ports. */
88 __vm_deallocate (__mach_task_self (),
89 (vm_address_t
) intarray
,
90 intarraysize
* sizeof (int));
91 __vm_deallocate (__mach_task_self (),
92 (vm_address_t
) portarray
,
93 portarraysize
* sizeof (mach_port_t
));
95 if (flags
& EXEC_SECURE
)
96 /* XXX if secure exec, elide environment variables
97 which the library uses and could be security holes.
101 /* Call other things which want to do some initialization. These are not
102 on the __libc_subinit hook because things there like to be able to
103 assume the availability of the POSIX.1 services we provide. */
104 RUN_HOOK (_hurd_subinit
, ());
107 #include <hurd/signal.h>
109 /* The user can do "int _hide_arguments = 1;" to make
110 sure the arguments are never visible with `ps'. */
111 int _hide_arguments
, _hide_environment
;
113 /* Hook for things which should be initialized as soon as the proc
114 server is available. */
115 DEFINE_HOOK (_hurd_proc_subinit
, (void));
117 /* Do startup handshaking with the proc server just installed in _hurd_ports.
118 Call _hurdsig_init to set up signal processing. */
121 _hurd_new_proc_init (char **argv
,
122 const int *intarray
, size_t intarraysize
)
125 struct hurd_userlink ulink
;
126 process_t procserver
;
128 /* Initialize the signal code; Mach exceptions will become signals. */
129 _hurdsig_init (intarray
, intarraysize
);
131 /* The signal thread is now prepared to receive messages.
132 It is safe to give the port to the proc server. */
134 procserver
= _hurd_port_get (&_hurd_ports
[INIT_PORT_PROC
], &ulink
);
136 /* Give the proc server our message port. */
137 __proc_setmsgport (procserver
, _hurd_msgport
, &oldmsg
);
138 if (oldmsg
!= MACH_PORT_NULL
)
139 /* Deallocate the old msg port we replaced. */
140 __mach_port_deallocate (__mach_task_self (), oldmsg
);
142 /* Tell the proc server where our args and environment are. */
143 __proc_set_arg_locations (procserver
,
144 _hide_arguments
? 0 : (vm_address_t
) argv
,
145 _hide_environment
? 0 : (vm_address_t
) __environ
);
147 _hurd_port_free (&_hurd_ports
[INIT_PORT_PROC
], &ulink
, procserver
);
149 /* Initialize proc server-assisted fault recovery for the signal thread. */
150 _hurdsig_fault_init ();
152 /* Call other things which want to do some initialization. These are not
153 on the _hurd_subinit hook because things there assume that things done
154 here, like _hurd_pid, are already initialized. */
155 RUN_HOOK (_hurd_proc_subinit
, ());
157 /* XXX This code should probably be removed entirely at some point. This
158 conditional should make it reasonably usable with old gdb's for a
159 while. Eventually it probably makes most sense for the exec server to
160 mask out EXEC_SIGTRAP so the debugged program is closer to not being
161 able to tell it's being debugged. */
164 && !(_hurd_exec_flags
& EXEC_SIGTRAP
)
167 /* This process is "traced", meaning it should stop on signals or exec.
168 We are all set up now to handle signals. Stop ourselves, to inform
169 our parent (presumably a debugger) that the exec has completed. */
170 __msg_sig_post (_hurd_msgport
, SIGTRAP
, 0, __mach_task_self ());
173 /* XXX Remove this versioning stuff and rename __new_hurd_proc_init
174 above back to _hurd_proc_init when we bump the libc soname. */
176 #if defined PIC && DO_VERSIONING
177 default_symbol_version (_hurd_new_proc_init
, _hurd_proc_init
, GLIBC_2
.1
);
180 weak_alias (_hurd_new_proc_init
, _hurd_proc_init
)
184 /* Called when we get a message telling us to change our proc server port. */
187 _hurd_setproc (process_t procserver
)
192 /* Give the proc server our message port. */
193 if (err
= __proc_setmsgport (procserver
, _hurd_msgport
, &oldmsg
))
195 if (oldmsg
!= MACH_PORT_NULL
)
196 /* Deallocate the old msg port we replaced. */
197 __mach_port_deallocate (__mach_task_self (), oldmsg
);
199 /* Tell the proc server where our args and environment are. */
200 if (err
= __proc_set_arg_locations (procserver
,
201 _hide_arguments
? 0 :
202 (vm_address_t
) __libc_argv
,
203 _hide_environment
? 0 :
204 (vm_address_t
) __environ
))
207 /* Those calls worked, so the port looks good. */
208 _hurd_port_set (&_hurd_ports
[INIT_PORT_PROC
], procserver
);
211 pid_t oldpgrp
= _hurd_pgrp
;
213 /* Call these functions again so they can fetch the
214 new information from the new proc server. */
215 RUN_HOOK (_hurd_proc_subinit
, ());
217 if (_hurd_pgrp
!= oldpgrp
)
219 /* Run things that want notification of a pgrp change. */
220 DECLARE_HOOK (_hurd_pgrp_changed_hook
, (pid_t
));
221 RUN_HOOK (_hurd_pgrp_changed_hook
, (_hurd_pgrp
));