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/* Server for S_IFSOCK nodes
Copyright (C) 1994, 1995, 2001, 02, 2006 Free Software Foundation
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 <hurd.h>
#include <hurd/ports.h>
#include <hurd/trivfs.h>
#include <hurd/paths.h>
#include <sys/socket.h>
#include <hurd/socket.h>
#include <hurd/fsys.h>
#include <stdio.h>
#include <stdlib.h>
#include <error.h>
#include <fcntl.h>
#include <argp.h>
#include <sys/cdefs.h>
#ifndef __XSTRING /* Could / should (?) be provided by glibc. */
#define __XSTRING(x) __STRING(x) /* Expand x, then stringify. */
#endif
#include <version.h>
#include "ifsock_S.h"
const char *argp_program_version = STANDARD_HURD_VERSION (ifsock);
static const char doc[] = "A translator to provide Unix domain sockets."
"\vThis translator acts as a hook for Unix domain sockets."
" The pflocal translator on " _SERVERS_SOCKET "/" __XSTRING(PF_LOCAL)
" implements the sockets.";
mach_port_t address_port;
struct port_class *control_class;
struct port_class *node_class;
struct port_bucket *port_bucket;
int trivfs_fstype = FSTYPE_IFSOCK;
int trivfs_fsid = 0; /* ??? */
int trivfs_support_read = 0;
int trivfs_support_write = 0;
int trivfs_support_exec = 0;
int trivfs_allow_open = 0;
struct port_class *trivfs_protid_portclasses[1];
struct port_class *trivfs_cntl_portclasses[1];
int trivfs_protid_nportclasses = 1;
int trivfs_cntl_nportclasses = 1;
int
demuxer (mach_msg_header_t *inp, mach_msg_header_t *outp)
{
extern int ifsock_server (mach_msg_header_t *, mach_msg_header_t *);
return trivfs_demuxer (inp, outp) || ifsock_server (inp, outp);
}
int
main (int argc, char **argv)
{
error_t err;
mach_port_t pflocal;
mach_port_t bootstrap;
char buf[512];
const struct argp argp = { 0, 0, 0, doc };
argp_parse (&argp, argc, argv, 0, 0, 0);
control_class = ports_create_class (trivfs_clean_cntl, 0);
node_class = ports_create_class (trivfs_clean_protid, 0);
port_bucket = ports_create_bucket ();
trivfs_protid_portclasses[0] = node_class;
trivfs_cntl_portclasses[0] = control_class;
task_get_bootstrap_port (mach_task_self (), &bootstrap);
if (bootstrap == MACH_PORT_NULL)
error(1, 0, "Must be started as a translator");
/* Reply to our parent */
err = trivfs_startup (bootstrap, 0, control_class, port_bucket,
node_class, port_bucket, NULL);
mach_port_deallocate (mach_task_self (), bootstrap);
if (err)
error(2, err, "Contacting parent");
/* Try and connect to the pflocal server */
sprintf (buf, "%s/%d", _SERVERS_SOCKET, PF_LOCAL);
pflocal = file_name_lookup (buf, 0, 0);
if (pflocal == MACH_PORT_NULL)
address_port = MACH_PORT_NULL;
else
{
err = socket_fabricate_address (pflocal, AF_LOCAL, &address_port);
if (err)
address_port = MACH_PORT_NULL;
mach_port_deallocate (mach_task_self (), pflocal);
}
/* Launch. */
ports_manage_port_operations_one_thread (port_bucket, demuxer, 0);
return 0;
}
void
trivfs_modify_stat (struct trivfs_protid *cred, struct stat *st)
{
st->st_mode = (st->st_mode & ~S_IFMT) | S_IFSOCK;
}
error_t
trivfs_goaway (struct trivfs_control *fsys, int flags)
{
exit (0);
}
error_t
S_ifsock_getsockaddr (struct trivfs_protid *cred,
mach_port_t *address)
{
int perms;
error_t err;
if (!cred
|| cred->pi.bucket != port_bucket
|| cred->pi.class != node_class)
return EOPNOTSUPP;
err = file_check_access (cred->realnode, &perms);
if (!err && !(perms & O_READ))
err = EACCES;
if (!err)
*address = address_port;
return err;
}
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