685 lines
16 KiB
C
685 lines
16 KiB
C
/* $NetBSD: linux_socket.c,v 1.24 2000/05/03 21:41:43 thorpej Exp $ */
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/*-
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* Copyright (c) 1995, 1998 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 Frank van der Linden and Eric Haszlakiewicz.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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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/*
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* Functions in multiarch:
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* linux_sys_socketcall : linux_socketcall.c
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/buf.h>
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#include <sys/malloc.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/select.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <sys/mount.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/device.h>
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#include <sys/protosw.h>
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#include <sys/syscallargs.h>
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#include <compat/linux/common/linux_types.h>
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#include <compat/linux/common/linux_util.h>
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#include <compat/linux/common/linux_signal.h>
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#include <compat/linux/common/linux_ioctl.h>
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#include <compat/linux/common/linux_socket.h>
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#include <compat/linux/common/linux_socketcall.h>
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#include <compat/linux/common/linux_sockio.h>
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#include <compat/linux/linux_syscallargs.h>
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#ifndef MIN
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#define MIN(a,b) (((a)<(b))?(a):(b))
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#endif
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/*
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* The calls in this file are entered either via the linux_socketcall()
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* interface or, on the Alpha, as individual syscalls. The
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* linux_socketcall function does any massaging of arguments so that all
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* the calls in here need not think that they are anything other
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* than a normal syscall.
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*/
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int linux_to_bsd_domain __P((int));
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int linux_to_bsd_sopt_level __P((int));
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int linux_to_bsd_so_sockopt __P((int));
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int linux_to_bsd_ip_sockopt __P((int));
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int linux_to_bsd_tcp_sockopt __P((int));
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int linux_to_bsd_udp_sockopt __P((int));
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int linux_getifhwaddr __P((struct proc *, register_t *, u_int, void *));
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/*
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* Convert between Linux and BSD socket domain values
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*/
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int
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linux_to_bsd_domain(ldom)
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int ldom;
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{
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switch (ldom) {
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case LINUX_AF_UNSPEC:
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return AF_UNSPEC;
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case LINUX_AF_UNIX:
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return AF_LOCAL;
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case LINUX_AF_INET:
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return AF_INET;
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case LINUX_AF_AX25:
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return AF_CCITT;
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case LINUX_AF_IPX:
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return AF_IPX;
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case LINUX_AF_APPLETALK:
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return AF_APPLETALK;
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case LINUX_AF_X25:
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return AF_CCITT;
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case LINUX_AF_INET6:
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return AF_INET6;
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case LINUX_AF_DECnet:
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return AF_DECnet;
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case LINUX_AF_NETLINK:
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return AF_ROUTE;
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/* NETROM, BRIDGE, ATMPVC, ROSE, NETBEUI, SECURITY, */
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/* pseudo_AF_KEY, PACKET, ASH, ECONET, ATMSVC, SNA */
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default:
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return -1;
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}
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}
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int
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linux_sys_socket(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_socket_args /* {
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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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} */ *uap = v;
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struct sys_socket_args bsa;
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SCARG(&bsa, protocol) = SCARG(uap, protocol);
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SCARG(&bsa, type) = SCARG(uap, type);
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SCARG(&bsa, domain) = linux_to_bsd_domain(SCARG(uap, domain));
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if (SCARG(&bsa, domain) == -1)
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return EINVAL;
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return sys_socket(p, &bsa, retval);
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}
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int
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linux_sys_socketpair(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_socketpair_args /* {
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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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syscallarg(int *) rsv;
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} */ *uap = v;
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struct sys_socketpair_args bsa;
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SCARG(&bsa, domain) = linux_to_bsd_domain(SCARG(uap, domain));
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if (SCARG(&bsa, domain) == -1)
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return EINVAL;
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SCARG(&bsa, type) = SCARG(uap, type);
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SCARG(&bsa, protocol) = SCARG(uap, protocol);
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SCARG(&bsa, rsv) = SCARG(uap, rsv);
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return sys_socketpair(p, &bsa, retval);
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}
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int
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linux_sys_sendto(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_sendto_args /* {
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syscallarg(int) s;
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syscallarg(void *) msg;
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syscallarg(int) len;
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syscallarg(int) flags;
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syscallarg(sockaddr *) to;
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syscallarg(int) tolen;
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} */ *uap = v;
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struct sys_sendto_args bsa;
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SCARG(&bsa, s) = SCARG(uap, s);
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SCARG(&bsa, buf) = SCARG(uap, msg);
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SCARG(&bsa, len) = SCARG(uap, len);
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SCARG(&bsa, flags) = SCARG(uap, flags);
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SCARG(&bsa, to) = (void *) SCARG(uap, to);
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SCARG(&bsa, tolen) = SCARG(uap, tolen);
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return sys_sendto(p, &bsa, retval);
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}
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int
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linux_sys_recvfrom(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_recvfrom_args /* {
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syscallarg(int) s;
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syscallarg(void *) buf;
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syscallarg(int) len;
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syscallarg(int) flags;
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syscallarg(struct sockaddr *) from;
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syscallarg(int *) fromlen;
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} */ *uap = v;
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struct compat_43_sys_recvfrom_args bra;
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SCARG(&bra, s) = SCARG(uap, s);
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SCARG(&bra, buf) = SCARG(uap, buf);
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SCARG(&bra, len) = SCARG(uap, len);
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SCARG(&bra, flags) = SCARG(uap, flags);
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SCARG(&bra, from) = (caddr_t) SCARG(uap, from);
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SCARG(&bra, fromlenaddr) = SCARG(uap, fromlen);
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return compat_43_sys_recvfrom(p, &bra, retval);
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}
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/*
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* Convert socket option level from Linux to NetBSD value. Only SOL_SOCKET
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* is different, the rest matches IPPROTO_* on both systems.
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*/
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int
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linux_to_bsd_sopt_level(llevel)
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int llevel;
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{
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switch (llevel) {
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case LINUX_SOL_SOCKET:
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return SOL_SOCKET;
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case LINUX_SOL_IP:
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return IPPROTO_IP;
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case LINUX_SOL_TCP:
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return IPPROTO_TCP;
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case LINUX_SOL_UDP:
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return IPPROTO_UDP;
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default:
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return -1;
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}
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}
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/*
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* Convert Linux socket level socket option numbers to NetBSD values.
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*/
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int
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linux_to_bsd_so_sockopt(lopt)
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int lopt;
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{
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switch (lopt) {
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case LINUX_SO_DEBUG:
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return SO_DEBUG;
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case LINUX_SO_REUSEADDR:
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return SO_REUSEADDR;
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case LINUX_SO_TYPE:
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return SO_TYPE;
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case LINUX_SO_ERROR:
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return SO_ERROR;
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case LINUX_SO_DONTROUTE:
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return SO_DONTROUTE;
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case LINUX_SO_BROADCAST:
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return SO_BROADCAST;
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case LINUX_SO_SNDBUF:
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return SO_SNDBUF;
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case LINUX_SO_RCVBUF:
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return SO_RCVBUF;
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case LINUX_SO_KEEPALIVE:
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return SO_KEEPALIVE;
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case LINUX_SO_OOBINLINE:
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return SO_OOBINLINE;
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case LINUX_SO_LINGER:
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return SO_LINGER;
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case LINUX_SO_PRIORITY:
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case LINUX_SO_NO_CHECK:
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default:
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return -1;
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}
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}
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/*
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* Convert Linux IP level socket option number to NetBSD values.
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*/
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int
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linux_to_bsd_ip_sockopt(lopt)
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int lopt;
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{
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switch (lopt) {
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case LINUX_IP_TOS:
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return IP_TOS;
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case LINUX_IP_TTL:
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return IP_TTL;
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case LINUX_IP_MULTICAST_TTL:
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return IP_MULTICAST_TTL;
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case LINUX_IP_MULTICAST_LOOP:
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return IP_MULTICAST_LOOP;
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case LINUX_IP_MULTICAST_IF:
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return IP_MULTICAST_IF;
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case LINUX_IP_ADD_MEMBERSHIP:
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return IP_ADD_MEMBERSHIP;
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case LINUX_IP_DROP_MEMBERSHIP:
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return IP_DROP_MEMBERSHIP;
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default:
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return -1;
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}
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}
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/*
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* Convert Linux TCP level socket option number to NetBSD values.
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*/
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int
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linux_to_bsd_tcp_sockopt(lopt)
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int lopt;
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{
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switch (lopt) {
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case LINUX_TCP_NODELAY:
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return TCP_NODELAY;
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case LINUX_TCP_MAXSEG:
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return TCP_MAXSEG;
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default:
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return -1;
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}
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}
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/*
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* Convert Linux UDP level socket option number to NetBSD values.
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*/
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int
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linux_to_bsd_udp_sockopt(lopt)
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int lopt;
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{
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switch (lopt) {
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default:
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return -1;
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}
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}
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/*
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* Another reasonably straightforward function: setsockopt(2).
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* The level and option numbers are converted; the values passed
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* are not (yet) converted, the ones currently implemented don't
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* need conversion, as they are the same on both systems.
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*/
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int
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linux_sys_setsockopt(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_setsockopt_args /* {
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syscallarg(int) s;
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syscallarg(int) level;
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syscallarg(int) optname;
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syscallarg(void *) optval;
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syscallarg(int) optlen;
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} */ *uap = v;
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struct sys_setsockopt_args bsa;
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int name;
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SCARG(&bsa, s) = SCARG(uap, s);
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SCARG(&bsa, level) = linux_to_bsd_sopt_level(SCARG(uap, level));
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SCARG(&bsa, val) = SCARG(uap, optval);
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SCARG(&bsa, valsize) = SCARG(uap, optlen);
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switch (SCARG(&bsa, level)) {
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case SOL_SOCKET:
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name = linux_to_bsd_so_sockopt(SCARG(uap, optname));
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break;
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case IPPROTO_IP:
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name = linux_to_bsd_ip_sockopt(SCARG(uap, optname));
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break;
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case IPPROTO_TCP:
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name = linux_to_bsd_tcp_sockopt(SCARG(uap, optname));
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break;
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case IPPROTO_UDP:
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name = linux_to_bsd_udp_sockopt(SCARG(uap, optname));
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break;
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default:
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return EINVAL;
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}
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if (name == -1)
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return EINVAL;
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SCARG(&bsa, name) = name;
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return sys_setsockopt(p, &bsa, retval);
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}
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/*
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* getsockopt(2) is very much the same as setsockopt(2) (see above)
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*/
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int
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linux_sys_getsockopt(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_getsockopt_args /* {
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syscallarg(int) s;
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syscallarg(int) level;
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syscallarg(int) optname;
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syscallarg(void *) optval;
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syscallarg(int *) optlen;
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} */ *uap = v;
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struct sys_getsockopt_args bga;
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int name;
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SCARG(&bga, s) = SCARG(uap, s);
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SCARG(&bga, level) = linux_to_bsd_sopt_level(SCARG(uap, level));
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SCARG(&bga, val) = SCARG(uap, optval);
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SCARG(&bga, avalsize) = SCARG(uap, optlen);
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switch (SCARG(&bga, level)) {
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case SOL_SOCKET:
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name = linux_to_bsd_so_sockopt(SCARG(uap, optname));
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break;
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case IPPROTO_IP:
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name = linux_to_bsd_ip_sockopt(SCARG(uap, optname));
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break;
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case IPPROTO_TCP:
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name = linux_to_bsd_tcp_sockopt(SCARG(uap, optname));
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break;
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case IPPROTO_UDP:
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name = linux_to_bsd_udp_sockopt(SCARG(uap, optname));
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break;
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default:
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return EINVAL;
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}
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if (name == -1)
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return EINVAL;
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SCARG(&bga, name) = name;
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return sys_getsockopt(p, &bga, retval);
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}
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#define IF_NAME_LEN 16
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int
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linux_getifhwaddr(p, retval, fd, data)
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struct proc *p;
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register_t *retval;
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u_int fd;
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void *data;
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{
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/* Not the full structure, just enough to map what we do here */
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struct linux_ifreq {
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char if_name[IF_NAME_LEN];
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struct osockaddr hwaddr;
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} lreq;
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struct filedesc *fdp;
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struct file *fp;
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struct ifaddr *ifa;
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struct ifnet *ifp;
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struct sockaddr_dl *sadl;
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int error, found;
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int index, ifnum;
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/*
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* We can't emulate this ioctl by calling sys_ioctl() to run
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* SIOCGIFCONF, because the user buffer is not of the right
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* type to take those results. We can't use kernel buffers to
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* receive the results, as the implementation of sys_ioctl()
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* and ifconf() [which implements SIOCGIFCONF] use
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* copyin()/copyout() which will fail on kernel addresses.
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*
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* So, we must duplicate code from sys_ioctl() and ifconf(). Ugh.
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*/
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fdp = p->p_fd;
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if (fd >= fdp->fd_nfiles ||
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(fp = fdp->fd_ofiles[fd]) == NULL ||
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(fp->f_iflags & FIF_WANTCLOSE) != 0)
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return (EBADF);
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FILE_USE(fp);
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if ((fp->f_flag & (FREAD | FWRITE)) == 0) {
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error = EBADF;
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goto out;
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}
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error = copyin(data, (caddr_t)&lreq, sizeof(lreq));
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if (error)
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goto out;
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lreq.if_name[IF_NAME_LEN-1] = '\0'; /* just in case */
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/*
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* Try real interface name first, then fake "ethX"
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*/
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for (ifp = ifnet.tqh_first, found = 0;
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ifp != 0 && !found;
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ifp = ifp->if_list.tqe_next) {
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if (strcmp(lreq.if_name, ifp->if_xname))
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/* not this interface */
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continue;
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found=1;
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if ((ifa = ifp->if_addrlist.tqh_first) != 0) {
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for (; ifa != 0; ifa = ifa->ifa_list.tqe_next) {
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sadl = (struct sockaddr_dl *)ifa->ifa_addr;
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/* only return ethernet addresses */
|
|
/* XXX what about FDDI, etc. ? */
|
|
if (sadl->sdl_family != AF_LINK ||
|
|
sadl->sdl_type != IFT_ETHER)
|
|
continue;
|
|
memcpy((caddr_t)&lreq.hwaddr.sa_data,
|
|
LLADDR(sadl),
|
|
MIN(sadl->sdl_alen,
|
|
sizeof(lreq.hwaddr.sa_data)));
|
|
lreq.hwaddr.sa_family =
|
|
sadl->sdl_family;
|
|
error = copyout((caddr_t)&lreq, data,
|
|
sizeof(lreq));
|
|
goto out;
|
|
}
|
|
} else {
|
|
error = ENODEV;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (lreq.if_name[0] == 'e' &&
|
|
lreq.if_name[1] == 't' &&
|
|
lreq.if_name[2] == 'h') {
|
|
for (ifnum = 0, index = 3;
|
|
lreq.if_name[index] != '\0' && index < IF_NAME_LEN;
|
|
index++) {
|
|
ifnum *= 10;
|
|
ifnum += lreq.if_name[index] - '0';
|
|
}
|
|
|
|
error = EINVAL; /* in case we don't find one */
|
|
for (ifp = ifnet.tqh_first, found = 0;
|
|
ifp != 0 && !found;
|
|
ifp = ifp->if_list.tqe_next) {
|
|
memcpy(lreq.if_name, ifp->if_xname,
|
|
MIN(IF_NAME_LEN, IFNAMSIZ));
|
|
if ((ifa = ifp->if_addrlist.tqh_first) == 0)
|
|
/* no addresses on this interface */
|
|
continue;
|
|
else
|
|
for (; ifa != 0; ifa = ifa->ifa_list.tqe_next) {
|
|
sadl = (struct sockaddr_dl *)ifa->ifa_addr;
|
|
/* only return ethernet addresses */
|
|
/* XXX what about FDDI, etc. ? */
|
|
if (sadl->sdl_family != AF_LINK ||
|
|
sadl->sdl_type != IFT_ETHER)
|
|
continue;
|
|
if (ifnum--)
|
|
/* not the reqested iface */
|
|
continue;
|
|
memcpy((caddr_t)&lreq.hwaddr.sa_data,
|
|
LLADDR(sadl),
|
|
MIN(sadl->sdl_alen,
|
|
sizeof(lreq.hwaddr.sa_data)));
|
|
lreq.hwaddr.sa_family =
|
|
sadl->sdl_family;
|
|
error = copyout((caddr_t)&lreq, data,
|
|
sizeof(lreq));
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
/* unknown interface, not even an "eth*" name */
|
|
error = ENODEV;
|
|
}
|
|
|
|
out:
|
|
FILE_UNUSE(fp, p);
|
|
return error;
|
|
}
|
|
#undef IF_NAME_LEN
|
|
|
|
int
|
|
linux_ioctl_socket(p, uap, retval)
|
|
struct proc *p;
|
|
struct linux_sys_ioctl_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(u_long) com;
|
|
syscallarg(caddr_t) data;
|
|
} */ *uap;
|
|
register_t *retval;
|
|
{
|
|
u_long com;
|
|
struct sys_ioctl_args ia;
|
|
|
|
com = SCARG(uap, com);
|
|
retval[0] = 0;
|
|
|
|
switch (com) {
|
|
case LINUX_SIOCGIFCONF:
|
|
SCARG(&ia, com) = OSIOCGIFCONF;
|
|
break;
|
|
case LINUX_SIOCGIFFLAGS:
|
|
SCARG(&ia, com) = SIOCGIFFLAGS;
|
|
break;
|
|
case LINUX_SIOCGIFADDR:
|
|
SCARG(&ia, com) = OSIOCGIFADDR;
|
|
break;
|
|
case LINUX_SIOCGIFDSTADDR:
|
|
SCARG(&ia, com) = OSIOCGIFDSTADDR;
|
|
break;
|
|
case LINUX_SIOCGIFBRDADDR:
|
|
SCARG(&ia, com) = OSIOCGIFBRDADDR;
|
|
break;
|
|
case LINUX_SIOCGIFNETMASK:
|
|
SCARG(&ia, com) = OSIOCGIFNETMASK;
|
|
break;
|
|
case LINUX_SIOCADDMULTI:
|
|
SCARG(&ia, com) = SIOCADDMULTI;
|
|
break;
|
|
case LINUX_SIOCDELMULTI:
|
|
SCARG(&ia, com) = SIOCDELMULTI;
|
|
break;
|
|
case LINUX_SIOCGIFHWADDR:
|
|
return linux_getifhwaddr(p, retval, SCARG(uap, fd),
|
|
SCARG(uap, data));
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
|
|
SCARG(&ia, fd) = SCARG(uap, fd);
|
|
SCARG(&ia, data) = SCARG(uap, data);
|
|
return sys_ioctl(p, &ia, retval);
|
|
}
|
|
|
|
int
|
|
linux_sys_connect(p, v, retval)
|
|
struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
int error;
|
|
|
|
struct sys_connect_args /* {
|
|
syscallarg(int) s;
|
|
syscallarg(const struct sockaddr *) name;
|
|
syscallarg(unsigned int) namelen;
|
|
} */ *uap = v;
|
|
|
|
error = sys_connect (p, v, retval);
|
|
|
|
if (error == EISCONN) {
|
|
struct file *fp;
|
|
struct socket *so;
|
|
int s, state, prflags;
|
|
|
|
/* getsock() will use the descriptor for us */
|
|
if (getsock(p->p_fd, SCARG(uap, s), &fp) != 0)
|
|
return EISCONN;
|
|
|
|
s = splsoftnet();
|
|
so = (struct socket *)fp->f_data;
|
|
state = so->so_state;
|
|
prflags = so->so_proto->pr_flags;
|
|
splx(s);
|
|
FILE_UNUSE(fp, p);
|
|
/*
|
|
* We should only let this call succeed once per
|
|
* non-blocking connect; however we don't have
|
|
* a convenient place to keep that state..
|
|
*/
|
|
if ((state & SS_NBIO) && (state & SS_ISCONNECTED) &&
|
|
(prflags & PR_CONNREQUIRED))
|
|
return 0;
|
|
}
|
|
|
|
return error;
|
|
}
|