384 lines
8.8 KiB
C
384 lines
8.8 KiB
C
/* $NetBSD: darwin_socket.c,v 1.20 2008/04/28 20:23:41 martin Exp $ */
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/*-
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* Copyright (c) 2004, 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Emmanuel Dreyfus
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: darwin_socket.c,v 1.20 2008/04/28 20:23:41 martin Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/socket.h>
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#include <sys/signal.h>
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#include <sys/lwp.h>
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#include <sys/socketvar.h>
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#include <sys/un.h>
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#include <sys/mbuf.h>
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#include <sys/filedesc.h>
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#include <sys/protosw.h>
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#include <sys/syscallargs.h>
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#include <compat/sys/signal.h>
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#include <compat/common/compat_util.h>
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#include <compat/mach/mach_vm.h>
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#include <compat/darwin/darwin_audit.h>
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#include <compat/darwin/darwin_socket.h>
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#include <compat/darwin/darwin_syscallargs.h>
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unsigned char native_to_darwin_af[] = {
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0,
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DARWIN_AF_LOCAL,
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DARWIN_AF_INET,
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DARWIN_AF_IMPLINK,
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DARWIN_AF_PUP,
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DARWIN_AF_CHAOS, /* 5 */
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DARWIN_AF_NS,
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DARWIN_AF_ISO,
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DARWIN_AF_ECMA,
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DARWIN_AF_DATAKIT,
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DARWIN_AF_CCITT, /* 10 */
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DARWIN_AF_SNA,
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DARWIN_AF_DECnet,
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DARWIN_AF_DLI,
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DARWIN_AF_LAT,
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DARWIN_AF_HYLINK, /* 15 */
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DARWIN_AF_APPLETALK,
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DARWIN_AF_ROUTE,
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DARWIN_AF_LINK,
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DARWIN_AF_XTP,
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DARWIN_AF_COIP, /* 20 */
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DARWIN_AF_CNT,
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DARWIN_AF_RTIP,
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DARWIN_AF_IPX,
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DARWIN_AF_INET6,
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DARWIN_AF_PIP, /* 25 */
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DARWIN_AF_ISDN,
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DARWIN_AF_NATM,
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0,
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DARWIN_AF_KEY,
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DARWIN_AF_HDRCMPLT, /* 30 */
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0,
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0,
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0,
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0,
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0, /* 35 */
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0,
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};
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unsigned char darwin_to_native_af[] = {
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0,
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AF_LOCAL,
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AF_INET,
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AF_IMPLINK,
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AF_PUP,
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AF_CHAOS, /* 5 */
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AF_NS,
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AF_ISO,
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AF_ECMA,
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AF_DATAKIT,
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AF_CCITT, /* 10 */
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AF_SNA,
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AF_DECnet,
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AF_DLI,
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AF_LAT,
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AF_HYLINK, /* 15 */
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AF_APPLETALK,
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AF_ROUTE,
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AF_LINK,
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0,
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AF_COIP, /* 20 */
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AF_CNT,
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0,
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AF_IPX,
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0,
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0, /* 25 */
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0,
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0,
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AF_ISDN,
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pseudo_AF_KEY,
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AF_INET6, /* 30 */
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AF_NATM,
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0,
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0,
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0,
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pseudo_AF_HDRCMPLT, /* 35 */
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0,
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};
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static int
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native_to_darwin_sockaddr(struct mbuf *nam)
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{
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struct sockaddr *sa = mtod(nam, void *);
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/* We only need to translate the address family */
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if ((unsigned)sa->sa_family >= __arraycount(native_to_darwin_af))
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return EPROTONOSUPPORT;
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sa->sa_family = native_to_darwin_af[sa->sa_family];
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return 0;
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}
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static int
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darwin_to_native_sockaddr(struct mbuf *nam)
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{
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struct sockaddr *sa = mtod(nam, void *);
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if ((unsigned)sa->sa_family >= __arraycount(darwin_to_native_af)) {
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m_free(nam);
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return EPROTONOSUPPORT;
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}
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sa->sa_family = darwin_to_native_af[sa->sa_family];
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/*
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* sa_len is zero for AF_LOCAL sockets, believe size we copied in!
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* The code used to strlen the filename, but that way lies madness!
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*/
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if (sa->sa_len > nam->m_len || sa->sa_len == 0)
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sa->sa_len = nam->m_len;
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else
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nam->m_len = sa->sa_len;
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return 0;
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}
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int
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darwin_sys_socket(struct lwp *l, const struct darwin_sys_socket_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) domain;
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syscallarg(int) type;
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syscallarg(int) protocol;
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} */
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struct compat_30_sys_socket_args cup;
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if ((unsigned)SCARG(uap, domain) >= __arraycount(darwin_to_native_af))
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return (EPROTONOSUPPORT);
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SCARG(&cup, domain) = darwin_to_native_af[SCARG(uap, domain)];
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SCARG(&cup, type) = SCARG(uap, type);
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SCARG(&cup, protocol) = SCARG(uap, protocol);
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return compat_30_sys_socket(l, &cup, retval);
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}
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int
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darwin_sys_recvfrom(struct lwp *l, const struct darwin_sys_recvfrom_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) s;
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syscallarg(void *) buf;
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syscallarg(size_t) len;
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syscallarg(int) flags;
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syscallarg(struct sockaddr *) from;
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syscallarg(unsigned int *) fromlenaddr;
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} */
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struct msghdr msg;
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struct iovec aiov;
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int error;
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struct mbuf *from;
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msg.msg_name = NULL;;
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msg.msg_iov = &aiov;
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msg.msg_iovlen = 1;
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aiov.iov_base = SCARG(uap, buf);
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aiov.iov_len = SCARG(uap, len);
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msg.msg_control = NULL;
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msg.msg_flags = SCARG(uap, flags) & MSG_USERFLAGS;
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error = do_sys_recvmsg(l, SCARG(uap, s), &msg, &from, NULL, retval);
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if (error != 0)
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return error;
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error = native_to_darwin_sockaddr(from);
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if (error == 0)
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error = copyout_sockname(SCARG(uap, from),
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SCARG(uap, fromlenaddr), MSG_LENUSRSPACE, from);
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if (from != NULL)
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m_free(from);
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return error;
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}
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int
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darwin_sys_accept(struct lwp *l, const struct darwin_sys_accept_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) s;
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syscallarg(struct sockaddr *) name;
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syscallarg(unsigned int *) anamelen;
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} */
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int error, fd;
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struct mbuf *name;
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error = do_sys_accept(l, SCARG(uap, s), &name, retval);
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if (error != 0)
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return error;
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error = native_to_darwin_sockaddr(name);
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if (error == 0)
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error = copyout_sockname(SCARG(uap, name), SCARG(uap, anamelen),
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MSG_LENUSRSPACE, name);
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if (name != NULL)
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m_free(name);
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if (error != 0) {
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fd = (int)*retval;
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if (fd_getfile(fd) != NULL)
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fd_close(fd);
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}
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return error;
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}
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int
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darwin_sys_getpeername(struct lwp *l, const struct darwin_sys_getpeername_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) fdes;
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syscallarg(struct sockaddr *) asa;
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syscallarg(unsigned int *) alen;
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} */
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struct mbuf *m;
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int error;
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error = do_sys_getsockname(l, SCARG(uap, fdes), PRU_PEERADDR, &m);
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if (error != 0)
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return error;
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error = native_to_darwin_sockaddr(m);
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if (error != 0)
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error = copyout_sockname(SCARG(uap, asa), SCARG(uap, alen),
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MSG_LENUSRSPACE, m);
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if (m != NULL)
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m_free(m);
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return error;
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}
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int
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darwin_sys_getsockname(struct lwp *l, const struct darwin_sys_getsockname_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) fdes;
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syscallarg(struct sockaddr *) asa;
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syscallarg(unsigned int *) alen;
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} */
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struct mbuf *m;
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int error;
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error = do_sys_getsockname(l, SCARG(uap, fdes), PRU_SOCKADDR, &m);
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if (error != 0)
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return error;
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error = native_to_darwin_sockaddr(m);
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if (error != 0)
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error = copyout_sockname(SCARG(uap, asa), SCARG(uap, alen),
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MSG_LENUSRSPACE, m);
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if (m != NULL)
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m_free(m);
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return error;
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}
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int
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darwin_sys_connect(struct lwp *l, const struct darwin_sys_connect_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) s;
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syscallarg(struct sockaddr *) name;
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syscallarg(unsigned int *) namelen;
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} */
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struct mbuf *nam;
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int error;
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error = sockargs(&nam, SCARG(uap, name), SCARG(uap, namelen),
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MT_SONAME);
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if (error == 0)
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error = darwin_to_native_sockaddr(nam);
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if (error == 0)
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error = do_sys_connect(l, SCARG(uap, s), nam);
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return error;
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}
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int
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darwin_sys_bind(struct lwp *l, const struct darwin_sys_bind_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) s;
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syscallarg(struct sockaddr *) name;
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syscallarg(unsigned int *) namelen;
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} */
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struct mbuf *nam;
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int error;
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error = sockargs(&nam, SCARG(uap, name), SCARG(uap, namelen),
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MT_SONAME);
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if (error == 0)
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error = darwin_to_native_sockaddr(nam);
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if (error == 0)
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error = do_sys_bind(l, SCARG(uap, s), nam);
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return error;
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}
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int
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darwin_sys_sendto(struct lwp *l, const struct darwin_sys_sendto_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) s;
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syscallarg(const void *) buf;
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syscallarg(size_t) len;
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syscallarg(int) flags;
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syscallarg(struct sockaddr *) to;
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syscallarg(unsigned int) tolen;
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} */
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struct msghdr msg;
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struct iovec aiov;
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struct mbuf *nam;
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int error;
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error = sockargs(&nam, SCARG(uap, to), SCARG(uap, tolen), MT_SONAME);
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if (error != 0)
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return error;
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error = darwin_to_native_sockaddr(nam);
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if (error != 0)
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return error;
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msg.msg_name = nam;
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msg.msg_namelen = 0;
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msg.msg_iov = &aiov;
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msg.msg_iovlen = 1;
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msg.msg_control = 0;
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msg.msg_flags = MSG_NAMEMBUF;
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aiov.iov_base = __UNCONST(SCARG(uap, buf)); /* XXXUNCONST kills const */
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aiov.iov_len = SCARG(uap, len);
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return do_sys_sendmsg(l, SCARG(uap, s), &msg, SCARG(uap, flags), retval);
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}
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