xref: /src/sys/compat/linux/common/linux_socketcall.c

/*	$NetBSD: linux_socketcall.c,v 1.21.2.1 2001/08/03 04:12:44 lukem Exp $	*/

/*-
 * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Frank van der Linden and Eric Haszlakiewicz.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the NetBSD
 *	Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/malloc.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/device.h>

#include <sys/syscallargs.h>

#include <compat/linux/common/linux_types.h>
#include <compat/linux/common/linux_util.h>
#include <compat/linux/common/linux_signal.h>
#include <compat/linux/common/linux_ioctl.h>
#include <compat/linux/common/linux_socket.h>
#include <compat/linux/common/linux_socketcall.h>
#include <compat/linux/common/linux_sockio.h>

#include <compat/linux/linux_syscallargs.h>

/* Used on: arm, i386, m68k, mips, ppc, sparc, sparc64 */
/* Not used on: alpha */

/*
 * This file contains the linux_socketcall() multiplexer.  Arguments
 * for the various socket calls are on the user stack. A pointer
 * to them is the only thing that is passed.  We copyin the arguments
 * here so the individual functions can assume they are normal syscalls.
 */

/* The sizes of the arguments.  Used for copyin. */
static const int linux_socketcall_argsize[LINUX_MAX_SOCKETCALL+1] = {
	-1,
	sizeof(struct linux_sys_socket_args),		/* 1 */
	sizeof(struct linux_sys_bind_args),
	sizeof(struct linux_sys_connect_args),
	sizeof(struct linux_sys_listen_args),
	sizeof(struct linux_sys_accept_args),		/* 5 */
	sizeof(struct linux_sys_getsockname_args),
	sizeof(struct linux_sys_getpeername_args),
	sizeof(struct linux_sys_socketpair_args),
	sizeof(struct linux_sys_send_args),
	sizeof(struct linux_sys_recv_args),		/* 10 */
	sizeof(struct linux_sys_sendto_args),
	sizeof(struct linux_sys_recvfrom_args),
	sizeof(struct linux_sys_shutdown_args),
	sizeof(struct linux_sys_setsockopt_args),
	sizeof(struct linux_sys_getsockopt_args),	/* 15 */
	sizeof(struct linux_sys_sendmsg_args),
	sizeof(struct linux_sys_recvmsg_args),		/* 17 */
};

/*
 * Entry point to all Linux socket calls. Just check which call to
 * make and take appropriate action.
 */
int
linux_sys_socketcall(p, v, retval)
	struct proc *p;
	void *v;
	register_t *retval;
{
	struct linux_sys_socketcall_args /* {
		syscallarg(int) what;
		syscallarg(void *) args;
	} */ *uap = v;
	struct linux_socketcall_dummy_args lda;
	int error;

	if (SCARG(uap, what) < 0 || SCARG(uap, what) > LINUX_MAX_SOCKETCALL)
		return ENOSYS;

	if ((error = copyin((caddr_t) SCARG(uap, args), (caddr_t) &lda,
	    linux_socketcall_argsize[SCARG(uap, what)])))
		return error;

	switch (SCARG(uap, what)) {
	case LINUX_SYS_socket:
		return linux_sys_socket(p, (void *)&lda, retval);
	case LINUX_SYS_bind:
		return linux_sys_bind(p, (void *)&lda, retval);
	case LINUX_SYS_connect:
		return linux_sys_connect(p, (void *)&lda, retval);
	case LINUX_SYS_listen:
		return sys_listen(p, (void *)&lda, retval);
	case LINUX_SYS_accept:
		return linux_sys_accept(p, (void *)&lda, retval);
	case LINUX_SYS_getsockname:
		return linux_sys_getsockname(p, (void *)&lda, retval);
	case LINUX_SYS_getpeername:
		return linux_sys_getpeername(p, (void *)&lda, retval);
	case LINUX_SYS_socketpair:
		return linux_sys_socketpair(p, (void *)&lda, retval);
	case LINUX_SYS_send:
		return linux_sys_send(p, (void *)&lda, retval);
	case LINUX_SYS_recv:
		return linux_sys_recv(p, (void *)&lda, retval);
	case LINUX_SYS_sendto:
		return linux_sys_sendto(p, (void *)&lda, retval);
	case LINUX_SYS_recvfrom:
		return linux_sys_recvfrom(p, (void *)&lda, retval);
	case LINUX_SYS_shutdown:
		return sys_shutdown(p, (void *)&lda, retval);
	case LINUX_SYS_setsockopt:
		return linux_sys_setsockopt(p, (void *)&lda, retval);
	case LINUX_SYS_getsockopt:
		return linux_sys_getsockopt(p, (void *)&lda, retval);
	case LINUX_SYS_sendmsg:
		return linux_sys_sendmsg(p, (void *)&lda, retval);
	case LINUX_SYS_recvmsg:
		return linux_sys_recvmsg(p, (void *)&lda, retval);
	default:
		return ENOSYS;
	}
}