NetBSD/sys/compat/darwin/darwin_socket.c

384 lines
8.8 KiB
C

/* $NetBSD: darwin_socket.c,v 1.20 2008/04/28 20:23:41 martin Exp $ */
/*-
* Copyright (c) 2004, 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Emmanuel Dreyfus
*
* 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.
*
* 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: darwin_socket.c,v 1.20 2008/04/28 20:23:41 martin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/signal.h>
#include <sys/lwp.h>
#include <sys/socketvar.h>
#include <sys/un.h>
#include <sys/mbuf.h>
#include <sys/filedesc.h>
#include <sys/protosw.h>
#include <sys/syscallargs.h>
#include <compat/sys/signal.h>
#include <compat/common/compat_util.h>
#include <compat/mach/mach_vm.h>
#include <compat/darwin/darwin_audit.h>
#include <compat/darwin/darwin_socket.h>
#include <compat/darwin/darwin_syscallargs.h>
unsigned char native_to_darwin_af[] = {
0,
DARWIN_AF_LOCAL,
DARWIN_AF_INET,
DARWIN_AF_IMPLINK,
DARWIN_AF_PUP,
DARWIN_AF_CHAOS, /* 5 */
DARWIN_AF_NS,
DARWIN_AF_ISO,
DARWIN_AF_ECMA,
DARWIN_AF_DATAKIT,
DARWIN_AF_CCITT, /* 10 */
DARWIN_AF_SNA,
DARWIN_AF_DECnet,
DARWIN_AF_DLI,
DARWIN_AF_LAT,
DARWIN_AF_HYLINK, /* 15 */
DARWIN_AF_APPLETALK,
DARWIN_AF_ROUTE,
DARWIN_AF_LINK,
DARWIN_AF_XTP,
DARWIN_AF_COIP, /* 20 */
DARWIN_AF_CNT,
DARWIN_AF_RTIP,
DARWIN_AF_IPX,
DARWIN_AF_INET6,
DARWIN_AF_PIP, /* 25 */
DARWIN_AF_ISDN,
DARWIN_AF_NATM,
0,
DARWIN_AF_KEY,
DARWIN_AF_HDRCMPLT, /* 30 */
0,
0,
0,
0,
0, /* 35 */
0,
};
unsigned char darwin_to_native_af[] = {
0,
AF_LOCAL,
AF_INET,
AF_IMPLINK,
AF_PUP,
AF_CHAOS, /* 5 */
AF_NS,
AF_ISO,
AF_ECMA,
AF_DATAKIT,
AF_CCITT, /* 10 */
AF_SNA,
AF_DECnet,
AF_DLI,
AF_LAT,
AF_HYLINK, /* 15 */
AF_APPLETALK,
AF_ROUTE,
AF_LINK,
0,
AF_COIP, /* 20 */
AF_CNT,
0,
AF_IPX,
0,
0, /* 25 */
0,
0,
AF_ISDN,
pseudo_AF_KEY,
AF_INET6, /* 30 */
AF_NATM,
0,
0,
0,
pseudo_AF_HDRCMPLT, /* 35 */
0,
};
static int
native_to_darwin_sockaddr(struct mbuf *nam)
{
struct sockaddr *sa = mtod(nam, void *);
/* We only need to translate the address family */
if ((unsigned)sa->sa_family >= __arraycount(native_to_darwin_af))
return EPROTONOSUPPORT;
sa->sa_family = native_to_darwin_af[sa->sa_family];
return 0;
}
static int
darwin_to_native_sockaddr(struct mbuf *nam)
{
struct sockaddr *sa = mtod(nam, void *);
if ((unsigned)sa->sa_family >= __arraycount(darwin_to_native_af)) {
m_free(nam);
return EPROTONOSUPPORT;
}
sa->sa_family = darwin_to_native_af[sa->sa_family];
/*
* sa_len is zero for AF_LOCAL sockets, believe size we copied in!
* The code used to strlen the filename, but that way lies madness!
*/
if (sa->sa_len > nam->m_len || sa->sa_len == 0)
sa->sa_len = nam->m_len;
else
nam->m_len = sa->sa_len;
return 0;
}
int
darwin_sys_socket(struct lwp *l, const struct darwin_sys_socket_args *uap, register_t *retval)
{
/* {
syscallarg(int) domain;
syscallarg(int) type;
syscallarg(int) protocol;
} */
struct compat_30_sys_socket_args cup;
if ((unsigned)SCARG(uap, domain) >= __arraycount(darwin_to_native_af))
return (EPROTONOSUPPORT);
SCARG(&cup, domain) = darwin_to_native_af[SCARG(uap, domain)];
SCARG(&cup, type) = SCARG(uap, type);
SCARG(&cup, protocol) = SCARG(uap, protocol);
return compat_30_sys_socket(l, &cup, retval);
}
int
darwin_sys_recvfrom(struct lwp *l, const struct darwin_sys_recvfrom_args *uap, register_t *retval)
{
/* {
syscallarg(int) s;
syscallarg(void *) buf;
syscallarg(size_t) len;
syscallarg(int) flags;
syscallarg(struct sockaddr *) from;
syscallarg(unsigned int *) fromlenaddr;
} */
struct msghdr msg;
struct iovec aiov;
int error;
struct mbuf *from;
msg.msg_name = NULL;;
msg.msg_iov = &aiov;
msg.msg_iovlen = 1;
aiov.iov_base = SCARG(uap, buf);
aiov.iov_len = SCARG(uap, len);
msg.msg_control = NULL;
msg.msg_flags = SCARG(uap, flags) & MSG_USERFLAGS;
error = do_sys_recvmsg(l, SCARG(uap, s), &msg, &from, NULL, retval);
if (error != 0)
return error;
error = native_to_darwin_sockaddr(from);
if (error == 0)
error = copyout_sockname(SCARG(uap, from),
SCARG(uap, fromlenaddr), MSG_LENUSRSPACE, from);
if (from != NULL)
m_free(from);
return error;
}
int
darwin_sys_accept(struct lwp *l, const struct darwin_sys_accept_args *uap, register_t *retval)
{
/* {
syscallarg(int) s;
syscallarg(struct sockaddr *) name;
syscallarg(unsigned int *) anamelen;
} */
int error, fd;
struct mbuf *name;
error = do_sys_accept(l, SCARG(uap, s), &name, retval);
if (error != 0)
return error;
error = native_to_darwin_sockaddr(name);
if (error == 0)
error = copyout_sockname(SCARG(uap, name), SCARG(uap, anamelen),
MSG_LENUSRSPACE, name);
if (name != NULL)
m_free(name);
if (error != 0) {
fd = (int)*retval;
if (fd_getfile(fd) != NULL)
fd_close(fd);
}
return error;
}
int
darwin_sys_getpeername(struct lwp *l, const struct darwin_sys_getpeername_args *uap, register_t *retval)
{
/* {
syscallarg(int) fdes;
syscallarg(struct sockaddr *) asa;
syscallarg(unsigned int *) alen;
} */
struct mbuf *m;
int error;
error = do_sys_getsockname(l, SCARG(uap, fdes), PRU_PEERADDR, &m);
if (error != 0)
return error;
error = native_to_darwin_sockaddr(m);
if (error != 0)
error = copyout_sockname(SCARG(uap, asa), SCARG(uap, alen),
MSG_LENUSRSPACE, m);
if (m != NULL)
m_free(m);
return error;
}
int
darwin_sys_getsockname(struct lwp *l, const struct darwin_sys_getsockname_args *uap, register_t *retval)
{
/* {
syscallarg(int) fdes;
syscallarg(struct sockaddr *) asa;
syscallarg(unsigned int *) alen;
} */
struct mbuf *m;
int error;
error = do_sys_getsockname(l, SCARG(uap, fdes), PRU_SOCKADDR, &m);
if (error != 0)
return error;
error = native_to_darwin_sockaddr(m);
if (error != 0)
error = copyout_sockname(SCARG(uap, asa), SCARG(uap, alen),
MSG_LENUSRSPACE, m);
if (m != NULL)
m_free(m);
return error;
}
int
darwin_sys_connect(struct lwp *l, const struct darwin_sys_connect_args *uap, register_t *retval)
{
/* {
syscallarg(int) s;
syscallarg(struct sockaddr *) name;
syscallarg(unsigned int *) namelen;
} */
struct mbuf *nam;
int error;
error = sockargs(&nam, SCARG(uap, name), SCARG(uap, namelen),
MT_SONAME);
if (error == 0)
error = darwin_to_native_sockaddr(nam);
if (error == 0)
error = do_sys_connect(l, SCARG(uap, s), nam);
return error;
}
int
darwin_sys_bind(struct lwp *l, const struct darwin_sys_bind_args *uap, register_t *retval)
{
/* {
syscallarg(int) s;
syscallarg(struct sockaddr *) name;
syscallarg(unsigned int *) namelen;
} */
struct mbuf *nam;
int error;
error = sockargs(&nam, SCARG(uap, name), SCARG(uap, namelen),
MT_SONAME);
if (error == 0)
error = darwin_to_native_sockaddr(nam);
if (error == 0)
error = do_sys_bind(l, SCARG(uap, s), nam);
return error;
}
int
darwin_sys_sendto(struct lwp *l, const struct darwin_sys_sendto_args *uap, register_t *retval)
{
/* {
syscallarg(int) s;
syscallarg(const void *) buf;
syscallarg(size_t) len;
syscallarg(int) flags;
syscallarg(struct sockaddr *) to;
syscallarg(unsigned int) tolen;
} */
struct msghdr msg;
struct iovec aiov;
struct mbuf *nam;
int error;
error = sockargs(&nam, SCARG(uap, to), SCARG(uap, tolen), MT_SONAME);
if (error != 0)
return error;
error = darwin_to_native_sockaddr(nam);
if (error != 0)
return error;
msg.msg_name = nam;
msg.msg_namelen = 0;
msg.msg_iov = &aiov;
msg.msg_iovlen = 1;
msg.msg_control = 0;
msg.msg_flags = MSG_NAMEMBUF;
aiov.iov_base = __UNCONST(SCARG(uap, buf)); /* XXXUNCONST kills const */
aiov.iov_len = SCARG(uap, len);
return do_sys_sendmsg(l, SCARG(uap, s), &msg, SCARG(uap, flags), retval);
}