summaryrefslogtreecommitdiff
path: root/pflocal/pflocal.c
blob: fcb62d1d555df364b89edd20b080d09a68477235 (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
/* A server for local sockets, of type PF_LOCAL

   Copyright (C) 1995, 1997, 1998 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 <stdio.h>
#include <getopt.h>
#include <error.h>
#include <sys/stat.h>

#include <hurd/hurd_types.h>
#include <hurd/trivfs.h>

#include "sock.h"

/* Where to put the file-system ports. */
static struct port_bucket *pf_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;

/* ---------------------------------------------------------------- */
#include "socket_S.h"

/* A demuxer to separate out pf-level operations on our node.  */
static int
pf_demuxer (mach_msg_header_t *inp, mach_msg_header_t *outp)
{
  mig_routine_t routine;
  if ((routine = socket_server_routine (inp)) ||
      (routine = NULL, trivfs_demuxer (inp, outp)))
    {
      if (routine)
        (*routine) (inp, outp);
      return TRUE;
    }
  else
    return FALSE;
}


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

  if (argc > 1)
    {
      fprintf(stderr, "Usage: %s\n", program_invocation_name);
      exit (1);
    }

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

  pf_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);

  /* Prepare to create sockets.  */
  err = sock_global_init ();
  if (err)
    error(3, err, "Initializing");

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

  /* Launch. */
  do
    ports_manage_port_operations_multithread (pf_port_bucket,
					      pf_demuxer,
					      30*1000, 5*60*1000, 0);
  while (sock_global_shutdown () != 0);

  return 0;
}

void
trivfs_modify_stat (struct trivfs_protid *cred, struct stat *st)
{
  st->st_fstype = FSTYPE_MISC;
}

error_t
trivfs_goaway (struct trivfs_control *fsys, int flags)
{
  int force = (flags & FSYS_GOAWAY_FORCE);
  error_t err = ports_inhibit_bucket_rpcs (pf_port_bucket); /* Stop all I/O. */

  if (err == 0 || (err != EINTR && force))
    {
      /* Now see if there are any old sockets lying around.  */
      err = sock_global_shutdown ();

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

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

  return err;
}