1 /*        $NetBSD: linux32_socketcall.c,v 1.9 2014/06/21 10:23:07 maxv Exp $ */
2 
3 /*-
4  * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. All advertising materials mentioning features or use of this software
15  *    must display the following acknowledgement:
16  *        This product includes software developed by Emmanuel Dreyfus
17  * 4. The name of the author may not be used to endorse or promote
18  *    products derived from this software without specific prior written
19  *    permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
23  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31  * POSSIBILITY OF SUCH DAMAGE.
32  */
33 #include <sys/cdefs.h>
34 __KERNEL_RCSID(0, "$NetBSD: linux32_socketcall.c,v 1.9 2014/06/21 10:23:07 maxv Exp $");
35 
36 #include <sys/types.h>
37 #include <sys/param.h>
38 #include <sys/time.h>
39 #include <sys/proc.h>
40 #include <sys/ucred.h>
41 #include <sys/ktrace.h>
42 
43 #include <compat/netbsd32/netbsd32.h>
44 #include <compat/netbsd32/netbsd32_syscallargs.h>
45 
46 #include <compat/linux/common/linux_types.h>
47 #include <compat/linux/common/linux_signal.h>
48 #include <compat/linux/common/linux_ipc.h>
49 #include <compat/linux/common/linux_sem.h>
50 #include <compat/linux/linux_syscallargs.h>
51 
52 #include <compat/linux32/common/linux32_types.h>
53 #include <compat/linux32/common/linux32_signal.h>
54 #include <compat/linux32/common/linux32_machdep.h>
55 #include <compat/linux32/common/linux32_sysctl.h>
56 #include <compat/linux32/common/linux32_socketcall.h>
57 #include <compat/linux32/linux32_syscallargs.h>
58 
59 #define sc(emul, fn) { "linux32/" #fn, sizeof (struct emul##_##fn##_args), \
60           (int (*)(struct lwp *, const void *, register_t *))emul##_##fn }
61 
62 static const struct {
63           const char *name;
64           int argsize;
65           int (*syscall)(struct lwp *, const void *, register_t *);
66 } linux32_socketcall[LINUX32_MAX_SOCKETCALL+1] = {
67           {"invalid",         -1, NULL},
68           sc(linux32_sys, socket),
69           sc(linux32_sys, bind),
70           sc(linux32_sys, connect),
71           sc(netbsd32, listen),
72           sc(linux32_sys, accept),
73           sc(linux32_sys, getsockname),
74           sc(linux32_sys, getpeername),
75           sc(linux32_sys, socketpair),
76           sc(linux32_sys, send),
77           sc(linux32_sys, recv),
78           sc(linux32_sys, sendto),
79           sc(linux32_sys, recvfrom),
80           sc(netbsd32, shutdown),
81           sc(linux32_sys, setsockopt),
82           sc(linux32_sys, getsockopt),
83           sc(linux32_sys, sendmsg),
84           sc(linux32_sys, recvmsg),
85 };
86 #undef sc
87 
88 
89 int
linux32_sys_socketcall(struct lwp * l,const struct linux32_sys_socketcall_args * uap,register_t * retval)90 linux32_sys_socketcall(struct lwp *l, const struct linux32_sys_socketcall_args *uap, register_t *retval)
91 {
92           /* {
93                     syscallarg(int) what;
94                     syscallarg(netbsd32_voidp) args;
95           } */
96           union linux32_socketcall_args ua;
97           int error;
98 
99           if (SCARG(uap, what) <= 0 || SCARG(uap, what) > LINUX32_MAX_SOCKETCALL)
100                     return ENOSYS;
101 
102           if ((error = copyin(SCARG_P32(uap, args), &ua,
103               linux32_socketcall[SCARG(uap, what)].argsize)) != 0)
104                     return error;
105 
106           /* Trace the socket-call arguments as 'GIO' on fd -1 */
107           ktrkuser(linux32_socketcall[SCARG(uap, what)].name, &ua,
108               linux32_socketcall[SCARG(uap, what)].argsize);
109 
110           return linux32_socketcall[SCARG(uap, what)].syscall(l, &ua, retval);
111 }
112