1 /* $NetBSD: if_43.c,v 1.27 2023/03/30 17:48:10 riastradh 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 1.27 2023/03/30 17:48:10 riastradh 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 #include <sys/compat_stub.h> 58 59 #include <sys/syscallargs.h> 60 61 #include <net/if.h> 62 #include <net/bpf.h> 63 #include <net/route.h> 64 #include <netinet/in.h> 65 #include <netinet/in_systm.h> 66 #include <netinet/ip.h> 67 #include <net/if_gre.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/net/if.h> 73 #include <compat/sys/socket.h> 74 #include <compat/sys/sockio.h> 75 76 #include <compat/common/compat_util.h> 77 #include <compat/common/compat_mod.h> 78 #include <uvm/uvm_extern.h> 79 80 #if defined(COMPAT_43) 81 82 /* 83 * Use a wrapper so that the compat_cvtcmd() can return a u_long 84 */ 85 static int 86 do_compat_cvtcmd(u_long *ncmd, u_long ocmd) 87 { 88 89 *ncmd = compat_cvtcmd(ocmd); 90 return 0; 91 } 92 93 u_long 94 compat_cvtcmd(u_long cmd) 95 { 96 u_long ncmd; 97 98 if (IOCPARM_LEN(cmd) != sizeof(struct oifreq)) 99 return cmd; 100 101 switch (cmd) { 102 case OSIOCSIFADDR: 103 return SIOCSIFADDR; 104 case OOSIOCGIFADDR: 105 return SIOCGIFADDR; 106 case OSIOCSIFDSTADDR: 107 return SIOCSIFDSTADDR; 108 case OOSIOCGIFDSTADDR: 109 return SIOCGIFDSTADDR; 110 case OSIOCSIFFLAGS: 111 return SIOCSIFFLAGS; 112 case OSIOCGIFFLAGS: 113 return SIOCGIFFLAGS; 114 case OOSIOCGIFBRDADDR: 115 return SIOCGIFBRDADDR; 116 case OSIOCSIFBRDADDR: 117 return SIOCSIFBRDADDR; 118 case OOSIOCGIFCONF: 119 return SIOCGIFCONF; 120 case OOSIOCGIFNETMASK: 121 return SIOCGIFNETMASK; 122 case OSIOCSIFNETMASK: 123 return SIOCSIFNETMASK; 124 case OSIOCGIFCONF: 125 return SIOCGIFCONF; 126 case OSIOCADDMULTI: 127 return SIOCADDMULTI; 128 case OSIOCDELMULTI: 129 return SIOCDELMULTI; 130 case SIOCSIFMEDIA_43: 131 return SIOCSIFMEDIA_80; 132 case OSIOCGIFMTU: 133 return SIOCGIFMTU; 134 case OSIOCGIFDATA: 135 return SIOCGIFDATA; 136 case OSIOCZIFDATA: 137 return SIOCZIFDATA; 138 case OBIOCGETIF: 139 return BIOCGETIF; 140 case OBIOCSETIF: 141 return BIOCSETIF; 142 case OTAPGIFNAME: 143 return TAPGIFNAME; 144 default: 145 /* 146 * XXX: the following code should be removed and the 147 * needing treatment ioctls should move to the switch 148 * above. 149 */ 150 ncmd = ((cmd) & ~(IOCPARM_MASK << IOCPARM_SHIFT)) | 151 (sizeof(struct ifreq) << IOCPARM_SHIFT); 152 switch (ncmd) { 153 case BIOCGETIF: 154 case BIOCSETIF: 155 case GREDSOCK: 156 case GREGADDRD: 157 case GREGADDRS: 158 case GREGPROTO: 159 case GRESADDRD: 160 case GRESADDRS: 161 case GRESPROTO: 162 case GRESSOCK: 163 case SIOCADDMULTI: 164 case SIOCDELMULTI: 165 case SIOCDIFADDR: 166 case SIOCDIFADDR_IN6: 167 case SIOCDIFPHYADDR: 168 case SIOCG80211NWID: 169 case SIOCG80211STATS: 170 case SIOCG80211ZSTATS: 171 case SIOCGIFADDR: 172 case SIOCGIFADDR_IN6: 173 case SIOCGIFAFLAG_IN6: 174 case SIOCGIFALIFETIME_IN6: 175 case SIOCGIFBRDADDR: 176 case SIOCGIFDLT: 177 case SIOCGIFDSTADDR: 178 case SIOCGIFDSTADDR_IN6: 179 case SIOCGIFFLAGS: 180 case SIOCGIFGENERIC: 181 case SIOCGIFMETRIC: 182 case SIOCGIFMTU: 183 case SIOCGIFNETMASK: 184 case SIOCGIFNETMASK_IN6: 185 case SIOCGIFPDSTADDR: 186 case SIOCGIFPDSTADDR_IN6: 187 case SIOCGIFPSRCADDR: 188 case SIOCGIFPSRCADDR_IN6: 189 case SIOCGIFSTAT_ICMP6: 190 case SIOCGIFSTAT_IN6: 191 case SIOCGVH: 192 case SIOCIFCREATE: 193 case SIOCIFDESTROY: 194 case SIOCS80211NWID: 195 case SIOCSIFADDR: 196 case SIOCSIFADDR_IN6: 197 case SIOCSIFBRDADDR: 198 case SIOCSIFDSTADDR: 199 case SIOCSIFDSTADDR_IN6: 200 case SIOCSIFFLAGS: 201 case SIOCSIFGENERIC: 202 case SIOCSIFMEDIA: 203 case SIOCSIFMETRIC: 204 case SIOCSIFMTU: 205 case SIOCSIFNETMASK: 206 case SIOCSIFNETMASK_IN6: 207 case SIOCSVH: 208 case TAPGIFNAME: 209 return ncmd; 210 default: 211 { int rv; 212 213 MODULE_HOOK_CALL(if43_cvtcmd_20_hook, (ncmd), enosys(), 214 rv); 215 if (rv == 0) 216 return ncmd; 217 return cmd; 218 } 219 } 220 } 221 } 222 223 int 224 compat_ifioctl(struct socket *so, u_long ocmd, u_long cmd, void *data, 225 struct lwp *l) 226 { 227 int error; 228 struct ifreq *ifr = (struct ifreq *)data; 229 struct ifreq ifrb; 230 struct oifreq *oifr = NULL; 231 struct ifnet *ifp; 232 struct sockaddr *sa; 233 struct psref psref; 234 int bound = curlwp_bind(); 235 236 ifp = if_get(ifr->ifr_name, &psref); 237 if (ifp == NULL) { 238 curlwp_bindx(bound); 239 return ENXIO; 240 } 241 242 /* 243 * If we have not been converted, make sure that we are. 244 * (because the upper layer handles old socket calls, but 245 * not oifreq calls. 246 */ 247 if (cmd == ocmd) { 248 cmd = compat_cvtcmd(ocmd); 249 } 250 if (cmd != ocmd) { 251 oifr = data; 252 ifr = &ifrb; 253 IFREQO2N_43(oifr, ifr); 254 } 255 256 switch (ocmd) { 257 enum { maxlen = sizeof(oifr->ifr_ifru) }; 258 CTASSERT(maxlen == 16); 259 socklen_t famlen; 260 case OSIOCSIFADDR: 261 case OSIOCSIFDSTADDR: 262 case OSIOCSIFBRDADDR: 263 case OSIOCSIFNETMASK: 264 sa = &ifr->ifr_addr; 265 #if BYTE_ORDER != BIG_ENDIAN 266 if (sa->sa_family == 0 && sa->sa_len < maxlen) { 267 sa->sa_family = sa->sa_len; 268 sa->sa_len = maxlen; 269 } 270 #else 271 if (sa->sa_len == 0) 272 sa->sa_len = maxlen; 273 #endif 274 famlen = sockaddr_getsize_by_family(sa->sa_family); 275 if (famlen > sa->sa_len) { 276 curlwp_bindx(bound); 277 return EAFNOSUPPORT; 278 } 279 280 break; 281 } 282 283 error = (*so->so_proto->pr_usrreqs->pr_ioctl)(so, cmd, ifr, ifp); 284 if_put(ifp, &psref); 285 curlwp_bindx(bound); 286 287 switch (ocmd) { 288 case OOSIOCGIFADDR: 289 case OOSIOCGIFDSTADDR: 290 case OOSIOCGIFBRDADDR: 291 case OOSIOCGIFNETMASK: 292 *(u_int16_t *)&ifr->ifr_addr = 293 ((struct sockaddr *)&ifr->ifr_addr)->sa_family; 294 break; 295 } 296 297 if (cmd != ocmd) 298 IFREQN2O_43(oifr, ifr); 299 300 return error; 301 } 302 303 int 304 if_43_init(void) 305 { 306 307 MODULE_HOOK_SET(if_cvtcmd_43_hook, do_compat_cvtcmd); 308 MODULE_HOOK_SET(if_ifioctl_43_hook, compat_ifioctl); 309 return 0; 310 } 311 312 int 313 if_43_fini(void) 314 { 315 316 MODULE_HOOK_UNSET(if_cvtcmd_43_hook); 317 MODULE_HOOK_UNSET(if_ifioctl_43_hook); 318 return 0; 319 } 320 #endif /* defined(COMPAT_43) */ 321
Indexes created Sat Sep 20 22:09:52 GMT 2025