13f4c340ae
IFF_DRV_RUNNING, as well as the move from ifnet.if_flags to ifnet.if_drv_flags. Device drivers are now responsible for synchronizing access to these flags, as they are in if_drv_flags. This helps prevent races between the network stack and device driver in maintaining the interface flags field. Many __FreeBSD__ and __FreeBSD_version checks maintained and continued; some less so. Reviewed by: pjd, bz MFC after: 7 days
168 lines
4.6 KiB
C
168 lines
4.6 KiB
C
/*-
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* Copyright (c) 1998 Mark Newton
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* Copyright (c) 1995 Christos Zoulas
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* All rights reserved.
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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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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/sockio.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <compat/svr4/svr4.h>
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#include <compat/svr4/svr4_util.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(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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#if defined(IFF_NOTRAILERS)
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bsd_to_svr4_flag(FF_NOTRAILERS);
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#endif
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if (bf & IFF_DRV_RUNNING)
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sf |= SVR4_IFF_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(fp, td, retval, fd, cmd, data)
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struct file *fp;
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struct thread *td;
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register_t *retval;
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int fd;
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u_long cmd;
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caddr_t data;
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{
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int error;
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*retval = 0;
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switch (cmd) {
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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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IFNET_RLOCK();
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TAILQ_FOREACH(ifp, &ifnet, if_link)
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if (TAILQ_FIRST(&ifp->if_addrhead) == NULL)
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ifnum++;
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else
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TAILQ_FOREACH(ifa, &ifp->if_addrhead,
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ifa_link)
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ifnum++;
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IFNET_RUNLOCK();
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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 ifreq 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) strlcpy(br.ifr_name, sr.svr4_ifr_name,
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sizeof(br.ifr_name));
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if ((error = fo_ioctl(fp, SIOCGIFFLAGS,
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(caddr_t) &br, td->td_ucred,
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td)) != 0) {
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DPRINTF(("SIOCGIFFLAGS (%s) %s: error %d\n",
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br.ifr_name, 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 %d svr4_ifreq %d ifc_len %d\n",
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sizeof(struct ifreq), sizeof(struct svr4_ifreq),
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sc.svr4_ifc_len));
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if ((error = fo_ioctl(fp, OSIOCGIFCONF,
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(caddr_t) &sc, td->td_ucred,
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td)) != 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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