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linux32_socketcall.c revision 1.5 
      1 /*	$NetBSD: linux32_socketcall.c,v 1.5 2007/12/08 18:36:12 dsl 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 1.5 2007/12/08 18:36:12 dsl Exp $");
     35 
     36 #include "opt_ktrace.h"
     37 #include <sys/types.h>
     38 #include <sys/param.h>
     39 #include <sys/time.h>
     40 #include <sys/proc.h>
     41 #include <sys/ucred.h>
     42 #include <sys/ktrace.h>
     43 
     44 #include <compat/netbsd32/netbsd32.h>
     45 #include <compat/netbsd32/netbsd32_syscallargs.h>
     46 
     47 #include <compat/linux/common/linux_types.h>
     48 #include <compat/linux/common/linux_signal.h>
     49 #include <compat/linux/linux_syscallargs.h>
     50 
     51 #include <compat/linux32/common/linux32_types.h>
     52 #include <compat/linux32/common/linux32_signal.h>
     53 #include <compat/linux32/common/linux32_machdep.h>
     54 #include <compat/linux32/common/linux32_sysctl.h>
     55 #include <compat/linux32/common/linux32_socketcall.h>
     56 #include <compat/linux32/linux32_syscallargs.h>
     57 
     58 #define s(f) sizeof(struct s1(f))
     59 #define s1(f) f ## _args
     60 
     61 static const struct {
     62 	const char *name;
     63 	int argsize;
     64 	int (*syscall)(struct lwp *, void *, register_t *);
     65 } linux32_socketcall[LINUX32_MAX_SOCKETCALL+1] = {
     66 	{"invalid",	-1, NULL},
     67 	{"socket",	s(linux32_sys_socket), linux32_sys_socket},
     68 	{"bind",	s(linux32_sys_bind), linux32_sys_bind},
     69 	{"connect",	s(linux32_sys_connect), linux32_sys_connect},
     70 	{"listen",	s(netbsd32_listen), netbsd32_listen},
     71 	{"accept",	s(linux32_sys_accept), linux32_sys_accept},
     72 	{"getsockname",	s(linux32_sys_getsockname), linux32_sys_getsockname},
     73 	{"getpeername",	s(linux32_sys_getpeername), linux32_sys_getpeername},
     74 	{"socketpair",	s(linux32_sys_socketpair), linux32_sys_socketpair},
     75 	{"send",	s(linux32_sys_send), linux32_sys_send},
     76 	{"recv",	s(linux32_sys_recv), linux32_sys_recv},
     77 	{"sendto",	s(linux32_sys_sendto), linux32_sys_sendto},
     78 	{"recvfrom",	s(linux32_sys_recvfrom), linux32_sys_recvfrom},
     79 	{"shutdown",	s(netbsd32_shutdown), netbsd32_shutdown},
     80 	{"setsockopt",	s(linux32_sys_setsockopt), linux32_sys_setsockopt},
     81 	{"getsockopt",	s(linux32_sys_getsockopt), linux32_sys_getsockopt},
     82 	{"sendmsg",	s(linux32_sys_sendmsg), linux32_sys_sendmsg},
     83 	{"recvmsg",	s(linux32_sys_recvmsg), linux32_sys_recvmsg},
     84 };
     85 #undef s
     86 
     87 int
     88 linux32_sys_socketcall(struct lwp *l, void *v, register_t *retval)
     89 {
     90 	struct linux32_sys_socketcall_args /* {
     91 		syscallarg(int) what;
     92 		syscallarg(netbsd32_voidp) args;
     93 	} */ *uap = v;
     94 	union linux32_socketcall_args ua;
     95 	int error;
     96 
     97 	if (SCARG(uap, what) < 0 || SCARG(uap, what) > LINUX32_MAX_SOCKETCALL)
     98 		return ENOSYS;
     99 
    100 	if ((error = copyin(SCARG_P32(uap, args), &ua,
    101 	    linux32_socketcall[SCARG(uap, what)].argsize)) != 0)
    102 		return error;
    103 
    104 	/* Trace the socket-call arguments as 'GIO' on fd -1 */
    105 	ktrkuser(linux32_socketcall[SCARG(uap, what)].name, &ua,
    106 	    linux32_socketcall[SCARG(uap, what)].argsize);
    107 
    108 	return linux32_socketcall[SCARG(uap, what)].syscall(l, &ua, retval);
    109 }
    110