1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1995 Steven Wallace
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. The name of the author may not be used to endorse or promote products
13 *    derived from this software without specific prior written permission
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
30/*
31 * IBCS2 compatibility module.
32 */
33
34#include "opt_spx_hack.h"
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/fcntl.h>
39#include <sys/lock.h>
40#include <sys/mutex.h>
41#include <sys/syscallsubr.h>
42#include <sys/sysproto.h>
43#include <sys/un.h>
44
45#include <i386/ibcs2/ibcs2_types.h>
46#include <i386/ibcs2/ibcs2_signal.h>
47#include <i386/ibcs2/ibcs2_util.h>
48#include <i386/ibcs2/ibcs2_proto.h>
49
50#define IBCS2_SECURE_GETLUID 1
51#define IBCS2_SECURE_SETLUID 2
52
53int
54ibcs2_secure(struct thread *td, struct ibcs2_secure_args *uap)
55{
56	switch (uap->cmd) {
57
58	case IBCS2_SECURE_GETLUID:		/* get login uid */
59		td->td_retval[0] = td->td_ucred->cr_uid;
60		return 0;
61
62	case IBCS2_SECURE_SETLUID:		/* set login uid */
63		return EPERM;
64
65	default:
66		printf("IBCS2: 'secure' cmd=%d not implemented\n", uap->cmd);
67	}
68
69	return EINVAL;
70}
71
72int
73ibcs2_lseek(struct thread *td, struct ibcs2_lseek_args *uap)
74{
75	struct lseek_args largs;
76	int error;
77
78	largs.fd = uap->fd;
79	largs.offset = uap->offset;
80	largs.whence = uap->whence;
81	error = sys_lseek(td, &largs);
82	return (error);
83}
84
85#ifdef SPX_HACK
86#include <sys/socket.h>
87#include <sys/un.h>
88
89int
90spx_open(struct thread *td)
91{
92	struct socket_args sock;
93	struct sockaddr_un sun;
94	int fd, error;
95
96	/* obtain a socket. */
97	DPRINTF(("SPX: open socket\n"));
98	sock.domain = AF_UNIX;
99	sock.type = SOCK_STREAM;
100	sock.protocol = 0;
101	error = sys_socket(td, &sock);
102	if (error)
103		return error;
104	fd = td->td_retval[0];
105
106	/* connect the socket to standard X socket */
107	DPRINTF(("SPX: connect to /tmp/X11-unix/X0\n"));
108	sun.sun_family = AF_UNIX;
109	strcpy(sun.sun_path, "/tmp/.X11-unix/X0");
110	sun.sun_len = sizeof(struct sockaddr_un) - sizeof(sun.sun_path) +
111	    strlen(sun.sun_path) + 1;
112
113	error = kern_connectat(td, AT_FDCWD, fd, (struct sockaddr *)&sun);
114	if (error) {
115		kern_close(td, fd);
116		return error;
117	}
118	td->td_retval[0] = fd;
119	return 0;
120}
121#endif /* SPX_HACK */
122