summaryrefslogtreecommitdiff
path: root/proc/main.c
blob: 6d74e1de6c6ab755fecaa6dc75079114da27a11e (plain)
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
/* Initialization of the proc server
   Copyright (C) 1993,94,95,96,97,99,2000 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/startup.h>
#include <device/device.h>
#include <assert.h>
#include <argp.h>
#include <error.h>
#include <version.h>

#include "proc.h"

const char *argp_program_version = STANDARD_HURD_VERSION (proc);

int
message_demuxer (mach_msg_header_t *inp,
		 mach_msg_header_t *outp)
{
  extern int process_server (mach_msg_header_t *, mach_msg_header_t *);
  extern int notify_server (mach_msg_header_t *, mach_msg_header_t *);
  extern int proc_exc_server (mach_msg_header_t *, mach_msg_header_t *);
  int status;

  mutex_lock (&global_lock);
  status = (process_server (inp, outp)
	    || notify_server (inp, outp)
	    || ports_interrupt_server (inp, outp)
	    || proc_exc_server (inp, outp));
  mutex_unlock (&global_lock);
  return status;
}

struct mutex global_lock = MUTEX_INITIALIZER;

int
main (int argc, char **argv, char **envp)
{
  mach_port_t boot;
  error_t err;
  mach_port_t pset, psetcntl;
  void *genport;
  process_t startup_port;
  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).  */
  startup_proc = create_startup_proc ();

  /* Create our own proc object (we are PID 0).  */
  self_proc = allocate_proc (mach_task_self ());
  complete_proc (self_proc, 0);

  startup_port = ports_get_right (startup_proc);
  mach_port_insert_right (mach_task_self (), startup_port,
			  startup_port, MACH_MSG_TYPE_MAKE_SEND);
  err = startup_procinit (boot, startup_port, &startup_proc->p_task,
			  &authserver, &master_host_port, &master_device_port);
  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 = (int) argv;
  self_proc->p_envp = (int) envp;

  /* Give ourselves good scheduling performance, because we are so
     important. */
  err = thread_get_assignment (mach_thread_self (), &pset);
  assert_perror (err);
  err = host_processor_set_priv (master_host_port, pset, &psetcntl);
  assert_perror (err);
  thread_max_priority (mach_thread_self (), psetcntl, 0);
  assert_perror (err);
  err = task_priority (mach_task_self (), 2, 1);
  assert_perror (err);

  mach_port_deallocate (mach_task_self (), pset);
  mach_port_deallocate (mach_task_self (), psetcntl);

  {
    /* 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 (master_device_port, 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);
  }

  while (1)
    ports_manage_port_operations_multithread (proc_bucket,
					      message_demuxer,
					      0, 0, 0);
}