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      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
     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