if_43.c revision 1.17
1 /* $NetBSD: if_43.c,v 1.17 2019/01/29 04:01:45 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 1.17 2019/01/29 04:01:45 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 #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/sys/socket.h> 73 #include <compat/sys/sockio.h> 74 75 #include <compat/common/compat_util.h> 76 #include <compat/common/compat_mod.h> 77 #include <uvm/uvm_extern.h> 78 79 #if defined(COMPAT_43) 80 81 /* 82 * Use a wrapper so that the compat_cvtcmd() can return a u_long 83 */ 84 static int 85 do_compat_cvtcmd(u_long *ncmd, u_long ocmd) 86 { 87 88 *ncmd = compat_cvtcmd(ocmd); 89 return 0; 90 } 91 92 u_long 93 compat_cvtcmd(u_long cmd) 94 { 95 u_long ncmd; 96 97 if (IOCPARM_LEN(cmd) != sizeof(struct oifreq)) 98 return cmd; 99 100 switch (cmd) { 101 case OSIOCSIFADDR: 102 return SIOCSIFADDR; 103 case OOSIOCGIFADDR: 104 return SIOCGIFADDR; 105 case OSIOCSIFDSTADDR: 106 return SIOCSIFDSTADDR; 107 case OOSIOCGIFDSTADDR: 108 return SIOCGIFDSTADDR; 109 case OSIOCSIFFLAGS: 110 return SIOCSIFFLAGS; 111 case OSIOCGIFFLAGS: 112 return SIOCGIFFLAGS; 113 case OOSIOCGIFBRDADDR: 114 return SIOCGIFBRDADDR; 115 case OSIOCSIFBRDADDR: 116 return SIOCSIFBRDADDR; 117 case OOSIOCGIFCONF: 118 return SIOCGIFCONF; 119 case OOSIOCGIFNETMASK: 120 return SIOCGIFNETMASK; 121 case OSIOCSIFNETMASK: 122 return SIOCSIFNETMASK; 123 case OSIOCGIFCONF: 124 return SIOCGIFCONF; 125 case OSIOCADDMULTI: 126 return SIOCADDMULTI; 127 case OSIOCDELMULTI: 128 return SIOCDELMULTI; 129 case OSIOCSIFMEDIA: 130 return SIOCSIFMEDIA; 131 case OSIOCGIFMTU: 132 return SIOCGIFMTU; 133 case OSIOCGIFDATA: 134 return SIOCGIFDATA; 135 case OSIOCZIFDATA: 136 return SIOCZIFDATA; 137 case OBIOCGETIF: 138 return BIOCGETIF; 139 case OBIOCSETIF: 140 return BIOCSETIF; 141 case OTAPGIFNAME: 142 return TAPGIFNAME; 143 default: 144 /* 145 * XXX: the following code should be removed and the 146 * needing treatment ioctls should move to the switch 147 * above. 148 */ 149 ncmd = ((cmd) & ~(IOCPARM_MASK << IOCPARM_SHIFT)) | 150 (sizeof(struct ifreq) << IOCPARM_SHIFT); 151 switch (ncmd) { 152 case BIOCGETIF: 153 case BIOCSETIF: 154 case GREDSOCK: 155 case GREGADDRD: 156 case GREGADDRS: 157 case GREGPROTO: 158 case GRESADDRD: 159 case GRESADDRS: 160 case GRESPROTO: 161 case GRESSOCK: 162 case SIOCADDMULTI: 163 case SIOCDELMULTI: 164 case SIOCDIFADDR: 165 case SIOCDIFADDR_IN6: 166 case SIOCDIFPHYADDR: 167 case SIOCGDEFIFACE_IN6: 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 SIOCSDEFIFACE_IN6: 196 case SIOCSIFADDR: 197 case SIOCSIFADDR_IN6: 198 case SIOCSIFBRDADDR: 199 case SIOCSIFDSTADDR: 200 case SIOCSIFDSTADDR_IN6: 201 case SIOCSIFFLAGS: 202 case SIOCSIFGENERIC: 203 case SIOCSIFMEDIA: 204 case SIOCSIFMETRIC: 205 case SIOCSIFMTU: 206 case SIOCSIFNETMASK: 207 case SIOCSIFNETMASK_IN6: 208 case SIOCSNDFLUSH_IN6: 209 case SIOCSPFXFLUSH_IN6: 210 case SIOCSRTRFLUSH_IN6: 211 case SIOCSVH: 212 case TAPGIFNAME: 213 return ncmd; 214 default: 215 { int rv; 216 217 MODULE_CALL_HOOK(if43_20_hook, (ncmd), enosys(), rv); 218 if (rv == 0) 219 return ncmd; 220 return cmd; 221 } 222 } 223 } 224 } 225 226 int 227 compat_ifioctl(struct socket *so, u_long ocmd, u_long cmd, void *data, 228 struct lwp *l) 229 { 230 int error; 231 struct ifreq *ifr = (struct ifreq *)data; 232 struct ifreq ifrb; 233 struct oifreq *oifr = NULL; 234 struct ifnet *ifp; 235 struct sockaddr *sa; 236 struct psref psref; 237 int bound = curlwp_bind(); 238 239 ifp = if_get(ifr->ifr_name, &psref); 240 if (ifp == NULL) { 241 curlwp_bindx(bound); 242 return ENXIO; 243 } 244 245 /* 246 * If we have not been converted, make sure that we are. 247 * (because the upper layer handles old socket calls, but 248 * not oifreq calls. 249 */ 250 if (cmd == ocmd) { 251 cmd = compat_cvtcmd(ocmd); 252 } 253 if (cmd != ocmd) { 254 oifr = data; 255 data = ifr = &ifrb; 256 ifreqo2n(oifr, ifr); 257 } 258 259 switch (ocmd) { 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 < 16) { 267 sa->sa_family = sa->sa_len; 268 sa->sa_len = 16; 269 } 270 #else 271 if (sa->sa_len == 0) 272 sa->sa_len = 16; 273 #endif 274 break; 275 } 276 277 error = (*so->so_proto->pr_usrreqs->pr_ioctl)(so, cmd, ifr, ifp); 278 if_put(ifp, &psref); 279 curlwp_bindx(bound); 280 281 switch (ocmd) { 282 case OOSIOCGIFADDR: 283 case OOSIOCGIFDSTADDR: 284 case OOSIOCGIFBRDADDR: 285 case OOSIOCGIFNETMASK: 286 *(u_int16_t *)&ifr->ifr_addr = 287 ((struct sockaddr *)&ifr->ifr_addr)->sa_family; 288 break; 289 } 290 291 if (cmd != ocmd) 292 ifreqn2o(oifr, ifr); 293 294 return error; 295 } 296 297 int 298 if_43_init(void) 299 { 300 301 MODULE_SET_HOOK(if_43_cvtcmd_hook, "if_43", do_compat_cvtcmd); 302 MODULE_SET_HOOK(if_43_ifioctl_hook, "if_43", compat_ifioctl); 303 return 0; 304 } 305 306 int 307 if_43_fini(void) 308 { 309 310 MODULE_UNSET_HOOK(if_43_cvtcmd_hook); 311 MODULE_UNSET_HOOK(if_43_ifioctl_hook); 312 return 0; 313 } 314 #endif /* defined(COMPAT_43) */ 315
Indexes created Thu Oct 23 22:10:10 GMT 2025