if_43.c revision 1.11.2.2
1 /* $NetBSD: if_43.c,v 1.11.2.2 2017/01/07 08:56:29 pgoyette Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)uipc_syscalls.c 8.4 (Berkeley) 2/21/94 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: if_43.c,v 1.11.2.2 2017/01/07 08:56:29 pgoyette Exp $"); 36 37 #if defined(_KERNEL_OPT) 38 #include "opt_compat_netbsd.h" 39 #endif 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/filedesc.h> 44 #include <sys/kernel.h> 45 #include <sys/proc.h> 46 #include <sys/file.h> 47 #include <sys/socket.h> 48 #include <sys/socketvar.h> 49 #include <sys/stat.h> 50 #include <sys/ioctl.h> 51 #include <sys/fcntl.h> 52 #include <sys/syslog.h> 53 #include <sys/unistd.h> 54 #include <sys/resourcevar.h> 55 #include <sys/mbuf.h> /* for MLEN */ 56 #include <sys/protosw.h> 57 58 #include <sys/syscallargs.h> 59 60 #include <net/if.h> 61 #include <net/bpf.h> 62 #include <net/route.h> 63 #include <netinet/in.h> 64 #include <netinet/in_systm.h> 65 #include <netinet/ip.h> 66 #include <net/if_gre.h> 67 #include <net/if_atm.h> 68 #include <net/if_tap.h> 69 #include <net80211/ieee80211_ioctl.h> 70 #include <netinet6/in6_var.h> 71 #include <netinet6/nd6.h> 72 #include <compat/sys/socket.h> 73 #include <compat/sys/sockio.h> 74 75 #include <compat/common/compat_util.h> 76 #include <compat/common/if_43.h> 77 #include <uvm/uvm_extern.h> 78 79 u_long 80 compat_cvtcmd(u_long cmd) 81 { 82 u_long ncmd; 83 84 if (IOCPARM_LEN(cmd) != sizeof(struct oifreq)) 85 return cmd; 86 87 switch (cmd) { 88 case OSIOCSIFADDR: 89 return SIOCSIFADDR; 90 case OOSIOCGIFADDR: 91 return SIOCGIFADDR; 92 case OSIOCSIFDSTADDR: 93 return SIOCSIFDSTADDR; 94 case OOSIOCGIFDSTADDR: 95 return SIOCGIFDSTADDR; 96 case OSIOCSIFFLAGS: 97 return SIOCSIFFLAGS; 98 case OSIOCGIFFLAGS: 99 return SIOCGIFFLAGS; 100 case OOSIOCGIFBRDADDR: 101 return SIOCGIFBRDADDR; 102 case OSIOCSIFBRDADDR: 103 return SIOCSIFBRDADDR; 104 case OOSIOCGIFCONF: 105 return SIOCGIFCONF; 106 case OOSIOCGIFNETMASK: 107 return SIOCGIFNETMASK; 108 case OSIOCSIFNETMASK: 109 return SIOCSIFNETMASK; 110 case OSIOCGIFCONF: 111 return SIOCGIFCONF; 112 case OSIOCADDMULTI: 113 return SIOCADDMULTI; 114 case OSIOCDELMULTI: 115 return SIOCDELMULTI; 116 case OSIOCSIFMEDIA: 117 return SIOCSIFMEDIA; 118 case OSIOCGIFMTU: 119 return SIOCGIFMTU; 120 case OSIOCGIFDATA: 121 return SIOCGIFDATA; 122 case OSIOCZIFDATA: 123 return SIOCZIFDATA; 124 case OBIOCGETIF: 125 return BIOCGETIF; 126 case OBIOCSETIF: 127 return BIOCSETIF; 128 case OTAPGIFNAME: 129 return TAPGIFNAME; 130 default: 131 /* 132 * XXX: the following code should be removed and the 133 * needing treatment ioctls should move to the switch 134 * above. 135 */ 136 ncmd = ((cmd) & ~(IOCPARM_MASK << IOCPARM_SHIFT)) | 137 (sizeof(struct ifreq) << IOCPARM_SHIFT); 138 switch (ncmd) { 139 case BIOCGETIF: 140 case BIOCSETIF: 141 case GREDSOCK: 142 case GREGADDRD: 143 case GREGADDRS: 144 case GREGPROTO: 145 case GRESADDRD: 146 case GRESADDRS: 147 case GRESPROTO: 148 case GRESSOCK: 149 #ifdef COMPAT_20 150 case OSIOCG80211STATS: 151 case OSIOCG80211ZSTATS: 152 #endif /* COMPAT_20 */ 153 case SIOCADDMULTI: 154 case SIOCDELMULTI: 155 case SIOCDIFADDR: 156 case SIOCDIFADDR_IN6: 157 case SIOCDIFPHYADDR: 158 case SIOCGDEFIFACE_IN6: 159 case SIOCG80211NWID: 160 case SIOCG80211STATS: 161 case SIOCG80211ZSTATS: 162 case SIOCGIFADDR: 163 case SIOCGIFADDR_IN6: 164 case SIOCGIFAFLAG_IN6: 165 case SIOCGIFALIFETIME_IN6: 166 case SIOCGIFBRDADDR: 167 case SIOCGIFDLT: 168 case SIOCGIFDSTADDR: 169 case SIOCGIFDSTADDR_IN6: 170 case SIOCGIFFLAGS: 171 case SIOCGIFGENERIC: 172 case SIOCGIFMETRIC: 173 case SIOCGIFMTU: 174 case SIOCGIFNETMASK: 175 case SIOCGIFNETMASK_IN6: 176 case SIOCGIFPDSTADDR: 177 case SIOCGIFPDSTADDR_IN6: 178 case SIOCGIFPSRCADDR: 179 case SIOCGIFPSRCADDR_IN6: 180 case SIOCGIFSTAT_ICMP6: 181 case SIOCGIFSTAT_IN6: 182 case SIOCGPVCSIF: 183 case SIOCGVH: 184 case SIOCIFCREATE: 185 case SIOCIFDESTROY: 186 case SIOCS80211NWID: 187 case SIOCSDEFIFACE_IN6: 188 case SIOCSIFADDR: 189 case SIOCSIFADDR_IN6: 190 case SIOCSIFBRDADDR: 191 case SIOCSIFDSTADDR: 192 case SIOCSIFDSTADDR_IN6: 193 case SIOCSIFFLAGS: 194 case SIOCSIFGENERIC: 195 case SIOCSIFMEDIA: 196 case SIOCSIFMETRIC: 197 case SIOCSIFMTU: 198 case SIOCSIFNETMASK: 199 case SIOCSIFNETMASK_IN6: 200 case SIOCSNDFLUSH_IN6: 201 case SIOCSPFXFLUSH_IN6: 202 case SIOCSPVCSIF: 203 case SIOCSRTRFLUSH_IN6: 204 case SIOCSVH: 205 case TAPGIFNAME: 206 return ncmd; 207 default: 208 return cmd; 209 } 210 } 211 } 212 213 int 214 compat_ifioctl(struct socket *so, u_long ocmd, u_long cmd, void *data, 215 struct lwp *l) 216 { 217 int error; 218 struct ifreq *ifr = (struct ifreq *)data; 219 struct ifreq ifrb; 220 struct oifreq *oifr = NULL; 221 struct ifnet *ifp; 222 struct sockaddr *sa; 223 struct psref psref; 224 int bound = curlwp_bind(); 225 226 ifp = if_get(ifr->ifr_name, &psref); 227 if (ifp == NULL) { 228 curlwp_bindx(bound); 229 return ENXIO; 230 } 231 232 /* 233 * If we have not been converted, make sure that we are. 234 * (because the upper layer handles old socket calls, but 235 * not oifreq calls. 236 */ 237 if (cmd == ocmd) { 238 cmd = compat_cvtcmd(ocmd); 239 } 240 if (cmd != ocmd) { 241 oifr = data; 242 data = ifr = &ifrb; 243 ifreqo2n(oifr, ifr); 244 } 245 246 switch (ocmd) { 247 case OSIOCSIFADDR: 248 case OSIOCSIFDSTADDR: 249 case OSIOCSIFBRDADDR: 250 case OSIOCSIFNETMASK: 251 sa = &ifr->ifr_addr; 252 #if BYTE_ORDER != BIG_ENDIAN 253 if (sa->sa_family == 0 && sa->sa_len < 16) { 254 sa->sa_family = sa->sa_len; 255 sa->sa_len = 16; 256 } 257 #else 258 if (sa->sa_len == 0) 259 sa->sa_len = 16; 260 #endif 261 break; 262 } 263 264 error = (*so->so_proto->pr_usrreqs->pr_ioctl)(so, cmd, ifr, ifp); 265 if_put(ifp, &psref); 266 curlwp_bindx(bound); 267 268 switch (ocmd) { 269 case OOSIOCGIFADDR: 270 case OOSIOCGIFDSTADDR: 271 case OOSIOCGIFBRDADDR: 272 case OOSIOCGIFNETMASK: 273 *(u_int16_t *)&ifr->ifr_addr = 274 ((struct sockaddr *)&ifr->ifr_addr)->sa_family; 275 break; 276 } 277 278 if (cmd != ocmd) 279 ifreqn2o(oifr, ifr); 280 281 return error; 282 } 283 284 #if defined(COMPAT_43) 285 static u_long (*orig_compat_cvtcmd)(u_long); 286 static int (*orig_compat_ifioctl)(struct socket *, u_long, u_long, 287 void *, struct lwp *); 288 289 void 290 if_43_init(void) 291 { 292 extern u_long (*vec_compat_cvtcmd)(u_long); 293 extern int (*vec_compat_ifioctl)(struct socket *, u_long, u_long, 294 void *, struct lwp *); 295 296 orig_compat_cvtcmd = vec_compat_cvtcmd; 297 vec_compat_cvtcmd = compat_cvtcmd; 298 299 orig_compat_ifioctl = vec_compat_ifioctl; 300 vec_compat_ifioctl = compat_ifioctl; 301 } 302 303 void 304 if_43_fini(void) 305 { 306 307 vec_compat_cvtcmd = orig_compat_cvtcmd; 308 vec_compat_ifioctl = orig_compat_ifioctl; 309 } 310 #endif /* defined(COMPAT_43) */ 311
Indexes created Mon Oct 20 08:09:54 GMT 2025