svr4_sockio.c revision 196019
1/*- 2 * Copyright (c) 1998 Mark Newton 3 * Copyright (c) 1995 Christos Zoulas 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: head/sys/compat/svr4/svr4_sockio.c 196019 2009-08-01 19:26:27Z rwatson $"); 31 32#include <sys/param.h> 33#include <sys/proc.h> 34#include <sys/systm.h> 35#include <sys/file.h> 36#include <sys/filedesc.h> 37#include <sys/sockio.h> 38#include <sys/socket.h> 39 40#include <net/if.h> 41#include <net/vnet.h> 42 43#include <compat/svr4/svr4.h> 44#include <compat/svr4/svr4_util.h> 45#include <compat/svr4/svr4_ioctl.h> 46#include <compat/svr4/svr4_sockio.h> 47 48static int bsd_to_svr4_flags(int); 49 50#define bsd_to_svr4_flag(a) \ 51 if (bf & __CONCAT(I,a)) sf |= __CONCAT(SVR4_I,a) 52 53static int 54bsd_to_svr4_flags(bf) 55 int bf; 56{ 57 int sf = 0; 58 bsd_to_svr4_flag(FF_UP); 59 bsd_to_svr4_flag(FF_BROADCAST); 60 bsd_to_svr4_flag(FF_DEBUG); 61 bsd_to_svr4_flag(FF_LOOPBACK); 62 bsd_to_svr4_flag(FF_POINTOPOINT); 63#if defined(IFF_NOTRAILERS) 64 bsd_to_svr4_flag(FF_NOTRAILERS); 65#endif 66 if (bf & IFF_DRV_RUNNING) 67 sf |= SVR4_IFF_RUNNING; 68 bsd_to_svr4_flag(FF_NOARP); 69 bsd_to_svr4_flag(FF_PROMISC); 70 bsd_to_svr4_flag(FF_ALLMULTI); 71 bsd_to_svr4_flag(FF_MULTICAST); 72 return sf; 73} 74 75int 76svr4_sock_ioctl(fp, td, retval, fd, cmd, data) 77 struct file *fp; 78 struct thread *td; 79 register_t *retval; 80 int fd; 81 u_long cmd; 82 caddr_t data; 83{ 84 int error; 85 86 *retval = 0; 87 88 switch (cmd) { 89 case SVR4_SIOCGIFNUM: 90 { 91 struct ifnet *ifp; 92 struct ifaddr *ifa; 93 int ifnum = 0; 94 95 /* 96 * This does not return the number of physical 97 * interfaces (if_index), but the number of interfaces 98 * + addresses like ifconf() does, because this number 99 * is used by code that will call SVR4_SIOCGIFCONF to 100 * find the space needed for SVR4_SIOCGIFCONF. So we 101 * count the number of ifreq entries that the next 102 * SVR4_SIOCGIFCONF will return. Maybe a more correct 103 * fix is to make SVR4_SIOCGIFCONF return only one 104 * entry per physical interface? 105 */ 106 IFNET_RLOCK(); 107 TAILQ_FOREACH(ifp, &V_ifnet, if_link) 108 if (TAILQ_EMPTY(&ifp->if_addrhead)) 109 ifnum++; 110 else 111 TAILQ_FOREACH(ifa, &ifp->if_addrhead, 112 ifa_link) 113 ifnum++; 114 IFNET_RUNLOCK(); 115 DPRINTF(("SIOCGIFNUM %d\n", ifnum)); 116 return copyout(&ifnum, data, sizeof(ifnum)); 117 } 118 119 case SVR4_SIOCGIFFLAGS: 120 { 121 struct ifreq br; 122 struct svr4_ifreq sr; 123 124 if ((error = copyin(data, &sr, sizeof(sr))) != 0) 125 return error; 126 127 (void) strlcpy(br.ifr_name, sr.svr4_ifr_name, 128 sizeof(br.ifr_name)); 129 if ((error = fo_ioctl(fp, SIOCGIFFLAGS, 130 (caddr_t) &br, td->td_ucred, 131 td)) != 0) { 132 DPRINTF(("SIOCGIFFLAGS (%s) %s: error %d\n", 133 br.ifr_name, sr.svr4_ifr_name, error)); 134 return error; 135 } 136 137 sr.svr4_ifr_flags = bsd_to_svr4_flags(br.ifr_flags); 138 DPRINTF(("SIOCGIFFLAGS %s = %x\n", 139 sr.svr4_ifr_name, sr.svr4_ifr_flags)); 140 return copyout(&sr, data, sizeof(sr)); 141 } 142 143 case SVR4_SIOCGIFCONF: 144 { 145 struct svr4_ifconf sc; 146 147 if ((error = copyin(data, &sc, sizeof(sc))) != 0) 148 return error; 149 150 DPRINTF(("ifreq %d svr4_ifreq %d ifc_len %d\n", 151 sizeof(struct ifreq), sizeof(struct svr4_ifreq), 152 sc.svr4_ifc_len)); 153 154 if ((error = fo_ioctl(fp, OSIOCGIFCONF, 155 (caddr_t) &sc, td->td_ucred, 156 td)) != 0) 157 return error; 158 159 DPRINTF(("SIOCGIFCONF\n")); 160 return 0; 161 } 162 163 164 default: 165 DPRINTF(("Unknown svr4 sockio %lx\n", cmd)); 166 return 0; /* ENOSYS really */ 167 } 168} 169