44731cab3b
general cleanup of the API. The entire API now consists of two functions similar to the pre-KSE API. The suser() function takes a thread pointer as its only argument. The td_ucred member of this thread must be valid so the only valid thread pointers are curthread and a few kernel threads such as thread0. The suser_cred() function takes a pointer to a struct ucred as its first argument and an integer flag as its second argument. The flag is currently only used for the PRISON_ROOT flag. Discussed on: smp@
392 lines
10 KiB
C
392 lines
10 KiB
C
/*
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* Copyright (c) 1995, Mike Mitchell
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* Copyright (c) 1984, 1985, 1986, 1987, 1993
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* The Regents of the University of California. 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. 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 University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ipx.c
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.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 <net/route.h>
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#include <netipx/ipx.h>
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#include <netipx/ipx_if.h>
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#include <netipx/ipx_var.h>
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struct ipx_ifaddr *ipx_ifaddr;
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static void ipx_ifscrub(struct ifnet *ifp, struct ipx_ifaddr *ia);
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static int ipx_ifinit(struct ifnet *ifp, struct ipx_ifaddr *ia,
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struct sockaddr_ipx *sipx, int scrub);
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/*
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* Generic internet control operations (ioctl's).
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*/
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int
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ipx_control(so, cmd, data, ifp, td)
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struct socket *so;
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u_long cmd;
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caddr_t data;
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register struct ifnet *ifp;
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struct thread *td;
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{
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register struct ifreq *ifr = (struct ifreq *)data;
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register struct ipx_aliasreq *ifra = (struct ipx_aliasreq *)data;
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register struct ipx_ifaddr *ia;
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struct ifaddr *ifa;
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struct ipx_ifaddr *oia;
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int dstIsNew, hostIsNew;
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int error = 0;
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/*
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* Find address for this interface, if it exists.
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*/
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if (ifp == NULL)
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return (EADDRNOTAVAIL);
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for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
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if (ia->ia_ifp == ifp)
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break;
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switch (cmd) {
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case SIOCGIFADDR:
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if (ia == NULL)
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return (EADDRNOTAVAIL);
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*(struct sockaddr_ipx *)&ifr->ifr_addr = ia->ia_addr;
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return (0);
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case SIOCGIFBRDADDR:
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if (ia == NULL)
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return (EADDRNOTAVAIL);
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if ((ifp->if_flags & IFF_BROADCAST) == 0)
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return (EINVAL);
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*(struct sockaddr_ipx *)&ifr->ifr_dstaddr = ia->ia_broadaddr;
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return (0);
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case SIOCGIFDSTADDR:
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if (ia == NULL)
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return (EADDRNOTAVAIL);
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if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
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return (EINVAL);
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*(struct sockaddr_ipx *)&ifr->ifr_dstaddr = ia->ia_dstaddr;
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return (0);
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}
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if (td && (error = suser(td)) != 0)
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return (error);
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switch (cmd) {
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case SIOCAIFADDR:
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case SIOCDIFADDR:
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if (ifra->ifra_addr.sipx_family == AF_IPX)
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for (oia = ia; ia != NULL; ia = ia->ia_next) {
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if (ia->ia_ifp == ifp &&
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ipx_neteq(ia->ia_addr.sipx_addr,
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ifra->ifra_addr.sipx_addr))
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break;
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}
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if (cmd == SIOCDIFADDR && ia == NULL)
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return (EADDRNOTAVAIL);
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/* FALLTHROUGH */
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case SIOCSIFADDR:
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case SIOCSIFDSTADDR:
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if (ia == NULL) {
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oia = (struct ipx_ifaddr *)
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malloc(sizeof(*ia), M_IFADDR,
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M_WAITOK | M_ZERO);
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if (oia == NULL)
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return (ENOBUFS);
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if ((ia = ipx_ifaddr) != NULL) {
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for ( ; ia->ia_next != NULL; ia = ia->ia_next)
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;
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ia->ia_next = oia;
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} else
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ipx_ifaddr = oia;
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ia = oia;
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ifa = (struct ifaddr *)ia;
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TAILQ_INSERT_TAIL(&ifp->if_addrhead, ifa, ifa_link);
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ia->ia_ifp = ifp;
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ifa->ifa_addr = (struct sockaddr *)&ia->ia_addr;
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ifa->ifa_netmask = (struct sockaddr *)&ipx_netmask;
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ifa->ifa_dstaddr = (struct sockaddr *)&ia->ia_dstaddr;
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if (ifp->if_flags & IFF_BROADCAST) {
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ia->ia_broadaddr.sipx_family = AF_IPX;
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ia->ia_broadaddr.sipx_len = sizeof(ia->ia_addr);
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ia->ia_broadaddr.sipx_addr.x_host = ipx_broadhost;
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}
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}
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}
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switch (cmd) {
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case SIOCSIFDSTADDR:
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if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
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return (EINVAL);
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if (ia->ia_flags & IFA_ROUTE) {
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rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
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ia->ia_flags &= ~IFA_ROUTE;
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}
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if (ifp->if_ioctl) {
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error = (*ifp->if_ioctl)(ifp, SIOCSIFDSTADDR, (void *)ia);
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if (error)
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return (error);
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}
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*(struct sockaddr *)&ia->ia_dstaddr = ifr->ifr_dstaddr;
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return (0);
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case SIOCSIFADDR:
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return (ipx_ifinit(ifp, ia,
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(struct sockaddr_ipx *)&ifr->ifr_addr, 1));
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case SIOCDIFADDR:
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ipx_ifscrub(ifp, ia);
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ifa = (struct ifaddr *)ia;
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TAILQ_REMOVE(&ifp->if_addrhead, ifa, ifa_link);
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oia = ia;
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if (oia == (ia = ipx_ifaddr)) {
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ipx_ifaddr = ia->ia_next;
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} else {
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while (ia->ia_next && (ia->ia_next != oia)) {
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ia = ia->ia_next;
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}
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if (ia->ia_next)
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ia->ia_next = oia->ia_next;
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else
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printf("Didn't unlink ipxifadr from list\n");
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}
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IFAFREE((&oia->ia_ifa));
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return (0);
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case SIOCAIFADDR:
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dstIsNew = 0;
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hostIsNew = 1;
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if (ia->ia_addr.sipx_family == AF_IPX) {
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if (ifra->ifra_addr.sipx_len == 0) {
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ifra->ifra_addr = ia->ia_addr;
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hostIsNew = 0;
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} else if (ipx_neteq(ifra->ifra_addr.sipx_addr,
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ia->ia_addr.sipx_addr))
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hostIsNew = 0;
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}
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if ((ifp->if_flags & IFF_POINTOPOINT) &&
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(ifra->ifra_dstaddr.sipx_family == AF_IPX)) {
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if (hostIsNew == 0)
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ipx_ifscrub(ifp, ia);
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ia->ia_dstaddr = ifra->ifra_dstaddr;
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dstIsNew = 1;
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}
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if (ifra->ifra_addr.sipx_family == AF_IPX &&
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(hostIsNew || dstIsNew))
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error = ipx_ifinit(ifp, ia, &ifra->ifra_addr, 0);
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return (error);
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default:
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if (ifp->if_ioctl == NULL)
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return (EOPNOTSUPP);
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return ((*ifp->if_ioctl)(ifp, cmd, data));
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}
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}
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/*
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* Delete any previous route for an old address.
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*/
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static void
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ipx_ifscrub(ifp, ia)
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register struct ifnet *ifp;
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register struct ipx_ifaddr *ia;
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{
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if (ia->ia_flags & IFA_ROUTE) {
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if (ifp->if_flags & IFF_POINTOPOINT) {
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rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
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} else
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rtinit(&(ia->ia_ifa), (int)RTM_DELETE, 0);
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ia->ia_flags &= ~IFA_ROUTE;
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}
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}
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/*
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* Initialize an interface's internet address
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* and routing table entry.
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*/
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static int
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ipx_ifinit(ifp, ia, sipx, scrub)
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register struct ifnet *ifp;
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register struct ipx_ifaddr *ia;
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register struct sockaddr_ipx *sipx;
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int scrub;
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{
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struct sockaddr_ipx oldaddr;
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int s = splimp(), error;
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/*
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* Set up new addresses.
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*/
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oldaddr = ia->ia_addr;
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ia->ia_addr = *sipx;
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/*
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* The convention we shall adopt for naming is that
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* a supplied address of zero means that "we don't care".
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* Use the MAC address of the interface. If it is an
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* interface without a MAC address, like a serial line, the
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* address must be supplied.
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*
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* Give the interface a chance to initialize
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* if this is its first address,
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* and to validate the address if necessary.
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*/
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if (ifp->if_ioctl != NULL &&
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(error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (void *)ia))) {
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ia->ia_addr = oldaddr;
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splx(s);
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return (error);
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}
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splx(s);
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ia->ia_ifa.ifa_metric = ifp->if_metric;
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/*
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* Add route for the network.
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*/
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if (scrub) {
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ia->ia_ifa.ifa_addr = (struct sockaddr *)&oldaddr;
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ipx_ifscrub(ifp, ia);
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ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
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}
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if (ifp->if_flags & IFF_POINTOPOINT)
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rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_HOST|RTF_UP);
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else {
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ia->ia_broadaddr.sipx_addr.x_net = ia->ia_addr.sipx_addr.x_net;
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rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_UP);
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}
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ia->ia_flags |= IFA_ROUTE;
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return (0);
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}
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/*
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* Return address info for specified internet network.
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*/
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struct ipx_ifaddr *
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ipx_iaonnetof(dst)
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register struct ipx_addr *dst;
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{
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register struct ipx_ifaddr *ia;
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register struct ipx_addr *compare;
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register struct ifnet *ifp;
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struct ipx_ifaddr *ia_maybe = NULL;
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union ipx_net net = dst->x_net;
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for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next) {
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if ((ifp = ia->ia_ifp) != NULL) {
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if (ifp->if_flags & IFF_POINTOPOINT) {
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compare = &satoipx_addr(ia->ia_dstaddr);
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if (ipx_hosteq(*dst, *compare))
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return (ia);
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if (ipx_neteqnn(net, ia->ia_addr.sipx_addr.x_net))
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ia_maybe = ia;
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} else {
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if (ipx_neteqnn(net, ia->ia_addr.sipx_addr.x_net))
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return (ia);
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}
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}
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}
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return (ia_maybe);
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}
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void
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ipx_printhost(addr)
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register struct ipx_addr *addr;
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{
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u_short port;
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struct ipx_addr work = *addr;
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register char *p; register u_char *q;
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register char *net = "", *host = "";
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char cport[10], chost[15], cnet[15];
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port = ntohs(work.x_port);
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if (ipx_nullnet(work) && ipx_nullhost(work)) {
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if (port)
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printf("*.%x", port);
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else
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printf("*.*");
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return;
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}
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if (ipx_wildnet(work))
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net = "any";
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else if (ipx_nullnet(work))
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net = "*";
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else {
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q = work.x_net.c_net;
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snprintf(cnet, sizeof(cnet), "%x%x%x%x",
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q[0], q[1], q[2], q[3]);
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for (p = cnet; *p == '0' && p < cnet + 8; p++)
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continue;
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net = p;
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}
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if (ipx_wildhost(work))
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host = "any";
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else if (ipx_nullhost(work))
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host = "*";
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else {
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q = work.x_host.c_host;
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snprintf(chost, sizeof(chost), "%x%x%x%x%x%x",
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q[0], q[1], q[2], q[3], q[4], q[5]);
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for (p = chost; *p == '0' && p < chost + 12; p++)
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continue;
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host = p;
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}
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if (port) {
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if (strcmp(host, "*") == 0) {
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host = "";
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snprintf(cport, sizeof(cport), "%x", port);
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} else
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snprintf(cport, sizeof(cport), ".%x", port);
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} else
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*cport = 0;
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printf("%s.%s%s", net, host, cport);
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}
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