20bfd9898e
compatibility with the older ioctls. This avoids stack smashing and abuse of "struct sockaddr" when ioctls placed "struct sockaddr_foo's" that were longer than "struct sockaddr". XXX: Some of the emulations might be broken; I tried to add code for them but I did not test them.
214 lines
6.2 KiB
C
214 lines
6.2 KiB
C
/* $NetBSD: svr4_sockio.c,v 1.30 2007/05/29 21:32:28 christos Exp $ */
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/*-
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* Copyright (c) 1995 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 Christos Zoulas.
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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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: svr4_sockio.c,v 1.30 2007/05/29 21:32:28 christos Exp $");
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/ioctl.h>
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#include <sys/termios.h>
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#include <sys/tty.h>
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#include <sys/socket.h>
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#include <sys/mount.h>
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#include <net/if.h>
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#include <sys/malloc.h>
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#include <sys/syscallargs.h>
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#include <compat/sys/socket.h>
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#include <compat/sys/sockio.h>
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#include <compat/svr4/svr4_types.h>
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#include <compat/svr4/svr4_util.h>
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#include <compat/svr4/svr4_signal.h>
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#include <compat/svr4/svr4_lwp.h>
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#include <compat/svr4/svr4_ucontext.h>
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#include <compat/svr4/svr4_syscallargs.h>
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#include <compat/svr4/svr4_stropts.h>
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#include <compat/svr4/svr4_ioctl.h>
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#include <compat/svr4/svr4_sockio.h>
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static int bsd_to_svr4_flags __P((int));
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#define bsd_to_svr4_flag(a) \
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if (bf & __CONCAT(I,a)) sf |= __CONCAT(SVR4_I,a)
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static int
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bsd_to_svr4_flags(bf)
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int bf;
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{
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int sf = 0;
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bsd_to_svr4_flag(FF_UP);
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bsd_to_svr4_flag(FF_BROADCAST);
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bsd_to_svr4_flag(FF_DEBUG);
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bsd_to_svr4_flag(FF_LOOPBACK);
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bsd_to_svr4_flag(FF_POINTOPOINT);
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bsd_to_svr4_flag(FF_NOTRAILERS);
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bsd_to_svr4_flag(FF_RUNNING);
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bsd_to_svr4_flag(FF_NOARP);
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bsd_to_svr4_flag(FF_PROMISC);
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bsd_to_svr4_flag(FF_ALLMULTI);
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bsd_to_svr4_flag(FF_MULTICAST);
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return sf;
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}
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int
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svr4_sock_ioctl(struct file *fp, struct lwp *l, register_t *retval,
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int fd, u_long cmd, void *data)
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{
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int error;
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int (*ctl)(struct file *, u_long, void *, struct lwp *) =
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fp->f_ops->fo_ioctl;
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*retval = 0;
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switch (cmd) {
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case SVR4_SIOCGLIFNUM:
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{
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struct ifnet *ifp;
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struct ifaddr *ifa;
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struct svr4_lifnum lifnum;
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error = copyin(data, &lifnum, sizeof(lifnum));
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if (error)
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return error;
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lifnum.lifn_count = 0;
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/* XXX: We don't pay attention to family or flags */
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for (ifp = ifnet.tqh_first;
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ifp != 0; ifp = ifp->if_list.tqe_next)
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if ((ifa = ifp->if_addrlist.tqh_first) == NULL)
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lifnum.lifn_count++;
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else
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for (;ifa != NULL;
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ifa = ifa->ifa_list.tqe_next)
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lifnum.lifn_count++;
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DPRINTF(("SIOCGLIFNUM [family=%d,flags=%d,count=%d]\n",
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lifnum.lifn_family, lifnum.lifn_flags,
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lifnum.lifn_count));
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return copyout(&lifnum, data, sizeof(lifnum));
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}
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case SVR4_SIOCGIFNUM:
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{
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struct ifnet *ifp;
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struct ifaddr *ifa;
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int ifnum = 0;
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/*
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* This does not return the number of physical
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* interfaces (if_index), but the number of interfaces
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* + addresses like ifconf() does, because this number
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* is used by code that will call SVR4_SIOCGIFCONF to
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* find the space needed for SVR4_SIOCGIFCONF. So we
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* count the number of ifreq entries that the next
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* SVR4_SIOCGIFCONF will return. Maybe a more correct
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* fix is to make SVR4_SIOCGIFCONF return only one
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* entry per physical interface?
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*/
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for (ifp = ifnet.tqh_first;
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ifp != 0; ifp = ifp->if_list.tqe_next)
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if ((ifa = ifp->if_addrlist.tqh_first) == NULL)
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ifnum++;
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else
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for (;ifa != NULL;
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ifa = ifa->ifa_list.tqe_next)
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ifnum++;
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DPRINTF(("SIOCGIFNUM %d\n", ifnum));
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return copyout(&ifnum, data, sizeof(ifnum));
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}
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case SVR4_SIOCGIFFLAGS:
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{
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struct oifreq br;
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struct svr4_ifreq sr;
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if ((error = copyin(data, &sr, sizeof(sr))) != 0)
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return error;
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(void) strncpy(br.ifr_name, sr.svr4_ifr_name,
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sizeof(br.ifr_name));
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if ((error = (*ctl)(fp, SIOCGIFFLAGS,
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(void *) &br, l)) != 0) {
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DPRINTF(("SIOCGIFFLAGS %s: error %d\n",
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sr.svr4_ifr_name, error));
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return error;
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}
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sr.svr4_ifr_flags = bsd_to_svr4_flags(br.ifr_flags);
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DPRINTF(("SIOCGIFFLAGS %s = %x\n",
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sr.svr4_ifr_name, sr.svr4_ifr_flags));
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return copyout(&sr, data, sizeof(sr));
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}
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case SVR4_SIOCGIFCONF:
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{
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struct svr4_ifconf sc;
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if ((error = copyin(data, &sc, sizeof(sc))) != 0)
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return error;
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DPRINTF(("ifreq %ld svr4_ifreq %ld ifc_len %d\n",
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(unsigned long)sizeof(struct oifreq),
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(unsigned long)sizeof(struct svr4_ifreq),
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sc.svr4_ifc_len));
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if ((error = (*ctl)(fp, OOSIOCGIFCONF,
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(void *) &sc, l)) != 0)
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return error;
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DPRINTF(("SIOCGIFCONF\n"));
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return 0;
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}
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default:
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DPRINTF(("Unknown svr4 sockio %lx\n", cmd));
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return 0; /* ENOSYS really */
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}
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}
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