summaryrefslogtreecommitdiff
path: root/pflocal/pflocal.c
blob: e4e998716255624ca71bf7fb59064f15ef7d79aa (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
140
141
142
143
144
145
/* A server for local sockets, of type PF_LOCAL

   Copyright (C) 1995 Free Software Foundation, Inc.

   Written by Miles Bader <miles@gnu.ai.mit.edu>

   This program 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.

   This program 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 this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */

#include <trivfs.h>

#include "pflocal.h"

/* Where our ports are... */
struct port_bucket *pflocal_port_bucket;

/* Trivfs hooks */
int trivfs_fstype = FSTYPE_MISC;
int trivfs_fsid = 0;
int trivfs_support_read = 0;
int trivfs_support_write = 0;
int trivfs_support_exec = 0;
int trivfs_allow_open = 0;

/* Trivfs noise.  */
struct port_class *trivfs_protid_portclasses[1];
struct port_class *trivfs_cntl_portclasses[1];
int trivfs_protid_nportclasses = 1;
int trivfs_cntl_nportclasses = 1;

/* ---------------------------------------------------------------- */

#define USAGE "Usage: %s\n"

static void
usage(int status)
{
  if (status != 0)
    fprintf(stderr, "Try `%s --help' for more information.\n",
	    program_invocation_name);
  else
    {
      printf(USAGE, program_invocation_name);
    }

  exit(status);
}

#define SHORT_OPTIONS "&"

static struct option options[] =
{
  {"help", no_argument, 0, '&'},
  {0, 0, 0, 0}
};

/* ---------------------------------------------------------------- */

void main(int argc, char *argv[])
{
  int opt;
  error_t err;
  mach_port_t bootstrap;

  while ((opt = getopt_long(argc, argv, SHORT_OPTIONS, options, 0)) != EOF)
    switch (opt)
      {
      case '&': usage(0);
      default:  usage(1);
      }

  if (argv[optind] != NULL)
    {
      fprintf(stderr, USAGE, program_invocation_name);
      usage(1);
    }

  task_get_bootstrap_port (mach_task_self (), &bootstrap);
  if (bootstrap == MACH_PORT_NULL)
    error(2, 0, "Must be started as a translator");
  
  pflocal_port_bucket = ports_create_bucket ();

  trivfs_cntl_portclasses[0] = ports_create_class (trivfs_clean_cntl, 0);
  trivfs_protid_portclasses[0] = ports_create_class (trivfs_clean_protid, 0);

  /* Reply to our parent */
  err =
    trivfs_startup(bootstrap,
		   trivfs_cntl_portclasses[0], pflocal_port_bucket,
		   trivfs_protid_portclasses[0], pflocal_port_bucket,
		   NULL);
  if (err)
    error(3, err, "Contacting parent");

  /* Open the device only when necessary.  */
  device = NULL;
  mutex_init(&device_lock);

  /* Launch. */
  ports_manage_port_operations_multithread (pflocal_port_bucket,
					    trivfs_demuxer,
					    30*1000, 5*60*1000, 0, 0);

  exit(0);
}

error_t
trivfs_goaway (int flags, mach_port_t realnode,
	       struct port_class *fsys_port_class,
	       struct port_class *file_port_class)
{
  error_t err;

  /* Stop all I/O.  */
  ports_inhibit_bucket_rpcs (pflocal_port_bucket);

  /* Now see if there are any old sockets lying around.  */
  err = sock_goaway (flags);

  /* Exit if not, or if we must. */
  if (err == 0 || flags & FSYS_GOAWAY_FORCE)
    exit (0);

  /* We won't go away, so start things going again...  */
  ports_resume_bucket_rpcs (pflocal_port_bucket);

  return err;
}

void
thread_cancel (thread_t foo __attribute__ ((unused)))
{
}