1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/* Initialization of the proc server
Copyright (C) 1993,94,95,96,97,99,2000,01,13 Free Software Foundation, Inc.
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
The GNU Hurd 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with the GNU Hurd; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Written by Michael I. Bushnell. */
#include <mach.h>
#include <hurd/hurd_types.h>
#include <hurd.h>
#include <hurd/paths.h>
#include <hurd/startup.h>
#include <device/device.h>
#include <assert.h>
#include <argp.h>
#include <error.h>
#include <version.h>
#include <pids.h>
#include "proc.h"
#include "gnumach_U.h"
const char *argp_program_version = STANDARD_HURD_VERSION (proc);
#include "process_S.h"
#include "notify_S.h"
#include "../libports/interrupt_S.h"
#include "proc_exc_S.h"
#include "task_notify_S.h"
int
message_demuxer (mach_msg_header_t *inp,
mach_msg_header_t *outp)
{
mig_routine_t routine;
if ((routine = process_server_routine (inp)) ||
(routine = notify_server_routine (inp)) ||
(routine = ports_interrupt_server_routine (inp)) ||
(routine = proc_exc_server_routine (inp)) ||
(routine = task_notify_server_routine (inp)))
{
pthread_mutex_lock (&global_lock);
(*routine) (inp, outp);
pthread_mutex_unlock (&global_lock);
return TRUE;
}
else
return FALSE;
}
pthread_mutex_t global_lock = PTHREAD_MUTEX_INITIALIZER;
int startup_fallback;
error_t
increase_priority (void)
{
mach_port_t pset = MACH_PORT_NULL, psetcntl = MACH_PORT_NULL;
error_t err;
err = thread_get_assignment (mach_thread_self (), &pset);
if (err)
goto out;
err = host_processor_set_priv (_hurd_host_priv, pset, &psetcntl);
if (err)
goto out;
err = thread_max_priority (mach_thread_self (), psetcntl, 0);
if (err)
goto out;
err = task_priority (mach_task_self (), 2, 1);
out:
if (MACH_PORT_VALID (pset))
mach_port_deallocate (mach_task_self (), pset);
if (MACH_PORT_VALID (psetcntl))
mach_port_deallocate (mach_task_self (), psetcntl);
return err;
}
int
main (int argc, char **argv, char **envp)
{
mach_port_t boot;
error_t err;
void *genport;
process_t startup_port;
mach_port_t startup;
struct argp argp = { 0, 0, 0, "Hurd process server" };
argp_parse (&argp, argc, argv, 0, 0, 0);
initialize_version_info ();
err = task_get_bootstrap_port (mach_task_self (), &boot);
assert_perror (err);
if (boot == MACH_PORT_NULL)
error (2, 0, "proc server can only be run by init during boot");
proc_bucket = ports_create_bucket ();
proc_class = ports_create_class (0, 0);
generic_port_class = ports_create_class (0, 0);
exc_class = ports_create_class (exc_clean, 0);
ports_create_port (generic_port_class, proc_bucket,
sizeof (struct port_info), &genport);
generic_port = ports_get_right (genport);
/* Create the initial proc object for init (PID 1). */
init_proc = create_init_proc ();
/* Create the startup proc object for /hurd/init (PID 2). */
startup_proc = allocate_proc (MACH_PORT_NULL);
startup_proc->p_deadmsg = 1;
complete_proc (startup_proc, HURD_PID_STARTUP);
/* Create our own proc object. */
self_proc = allocate_proc (mach_task_self ());
assert (self_proc);
complete_proc (self_proc, HURD_PID_PROC);
startup_port = ports_get_send_right (startup_proc);
err = startup_procinit (boot, startup_port, &startup_proc->p_task,
&authserver, &_hurd_host_priv, &_hurd_device_master);
assert_perror (err);
mach_port_deallocate (mach_task_self (), startup_port);
mach_port_mod_refs (mach_task_self (), authserver, MACH_PORT_RIGHT_SEND, 1);
_hurd_port_set (&_hurd_ports[INIT_PORT_AUTH], authserver);
mach_port_deallocate (mach_task_self (), boot);
proc_death_notify (startup_proc);
add_proc_to_hash (startup_proc); /* Now that we have the task port. */
/* Set our own argv and envp locations. */
self_proc->p_argv = (vm_address_t) argv;
self_proc->p_envp = (vm_address_t) envp;
/* Give ourselves good scheduling performance, because we are so
important. */
err = increase_priority ();
if (err)
error (0, err, "Increasing priority failed");
err = register_new_task_notification (_hurd_host_priv,
generic_port,
MACH_MSG_TYPE_MAKE_SEND);
if (err)
error (0, err, "Registering task notifications failed");
{
/* Get our stderr set up to print on the console, in case we have
to panic or something. */
mach_port_t cons;
error_t err;
err = device_open (_hurd_device_master, D_READ|D_WRITE, "console", &cons);
assert_perror (err);
stdin = mach_open_devstream (cons, "r");
stdout = stderr = mach_open_devstream (cons, "w");
mach_port_deallocate (mach_task_self (), cons);
}
startup = file_name_lookup (_SERVERS_STARTUP, 0, 0);
if (MACH_PORT_VALID (startup))
{
err = startup_essential_task (startup, mach_task_self (),
MACH_PORT_NULL, "proc", _hurd_host_priv);
if (err)
/* Due to the single-threaded nature of /hurd/startup, it can
only handle requests once the core server bootstrap has
completed. Therefore, it does not bind itself to
/servers/startup until it is ready. */
/* Fall back to abusing the message port lookup. */
startup_fallback = 1;
err = mach_port_deallocate (mach_task_self (), startup);
assert_perror (err);
}
else
/* Fall back to abusing the message port lookup. */
startup_fallback = 1;
while (1)
ports_manage_port_operations_multithread (proc_bucket,
message_demuxer,
0, 0, 0);
}
|
