if_43.c revision 1.14.2.10
1 /* $NetBSD: if_43.c,v 1.14.2.10 2018/10/15 04:33:34 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 1.14.2.10 2018/10/15 04:33:34 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 * Hook for calling the if43_20 compatability routine. 83 * 84 * XXX The if43_20 routine doesn't really have any effect, since its 85 * XXX return value is ignored (see compat/common/if_43.c)! 86 */ 87 MODULE_CALL_HOOK_DECL(if43_20_hook, f, (u_long ncmd)); 88 MODULE_CALL_HOOK(if43_20_hook, f, (u_long ncmd), (ncmd), enosys()); 89 90 /* 91 * Use a wrapper so that the compat_cvtcmd() can return a u_long 92 */ 93 static int 94 do_compat_cvtcmd(u_long *ncmd, u_long ocmd) 95 { 96 97 *ncmd = compat_cvtcmd(ocmd); 98 return 0; 99 } 100 101 u_long 102 compat_cvtcmd(u_long cmd) 103 { 104 u_long ncmd; 105 106 if (IOCPARM_LEN(cmd) != sizeof(struct oifreq)) 107 return cmd; 108 109 switch (cmd) { 110 case OSIOCSIFADDR: 111 return SIOCSIFADDR; 112 case OOSIOCGIFADDR: 113 return SIOCGIFADDR; 114 case OSIOCSIFDSTADDR: 115 return SIOCSIFDSTADDR; 116 case OOSIOCGIFDSTADDR: 117 return SIOCGIFDSTADDR; 118 case OSIOCSIFFLAGS: 119 return SIOCSIFFLAGS; 120 case OSIOCGIFFLAGS: 121 return SIOCGIFFLAGS; 122 case OOSIOCGIFBRDADDR: 123 return SIOCGIFBRDADDR; 124 case OSIOCSIFBRDADDR: 125 return SIOCSIFBRDADDR; 126 case OOSIOCGIFCONF: 127 return SIOCGIFCONF; 128 case OOSIOCGIFNETMASK: 129 return SIOCGIFNETMASK; 130 case OSIOCSIFNETMASK: 131 return SIOCSIFNETMASK; 132 case OSIOCGIFCONF: 133 return SIOCGIFCONF; 134 case OSIOCADDMULTI: 135 return SIOCADDMULTI; 136 case OSIOCDELMULTI: 137 return SIOCDELMULTI; 138 case OSIOCSIFMEDIA: 139 return SIOCSIFMEDIA; 140 case OSIOCGIFMTU: 141 return SIOCGIFMTU; 142 case OSIOCGIFDATA: 143 return SIOCGIFDATA; 144 case OSIOCZIFDATA: 145 return SIOCZIFDATA; 146 case OBIOCGETIF: 147 return BIOCGETIF; 148 case OBIOCSETIF: 149 return BIOCSETIF; 150 case OTAPGIFNAME: 151 return TAPGIFNAME; 152 default: 153 /* 154 * XXX: the following code should be removed and the 155 * needing treatment ioctls should move to the switch 156 * above. 157 */ 158 ncmd = ((cmd) & ~(IOCPARM_MASK << IOCPARM_SHIFT)) | 159 (sizeof(struct ifreq) << IOCPARM_SHIFT); 160 switch (ncmd) { 161 case BIOCGETIF: 162 case BIOCSETIF: 163 case GREDSOCK: 164 case GREGADDRD: 165 case GREGADDRS: 166 case GREGPROTO: 167 case GRESADDRD: 168 case GRESADDRS: 169 case GRESPROTO: 170 case GRESSOCK: 171 case SIOCADDMULTI: 172 case SIOCDELMULTI: 173 case SIOCDIFADDR: 174 case SIOCDIFADDR_IN6: 175 case SIOCDIFPHYADDR: 176 case SIOCGDEFIFACE_IN6: 177 case SIOCG80211NWID: 178 case SIOCG80211STATS: 179 case SIOCG80211ZSTATS: 180 case SIOCGIFADDR: 181 case SIOCGIFADDR_IN6: 182 case SIOCGIFAFLAG_IN6: 183 case SIOCGIFALIFETIME_IN6: 184 case SIOCGIFBRDADDR: 185 case SIOCGIFDLT: 186 case SIOCGIFDSTADDR: 187 case SIOCGIFDSTADDR_IN6: 188 case SIOCGIFFLAGS: 189 case SIOCGIFGENERIC: 190 case SIOCGIFMETRIC: 191 case SIOCGIFMTU: 192 case SIOCGIFNETMASK: 193 case SIOCGIFNETMASK_IN6: 194 case SIOCGIFPDSTADDR: 195 case SIOCGIFPDSTADDR_IN6: 196 case SIOCGIFPSRCADDR: 197 case SIOCGIFPSRCADDR_IN6: 198 case SIOCGIFSTAT_ICMP6: 199 case SIOCGIFSTAT_IN6: 200 case SIOCGVH: 201 case SIOCIFCREATE: 202 case SIOCIFDESTROY: 203 case SIOCS80211NWID: 204 case SIOCSDEFIFACE_IN6: 205 case SIOCSIFADDR: 206 case SIOCSIFADDR_IN6: 207 case SIOCSIFBRDADDR: 208 case SIOCSIFDSTADDR: 209 case SIOCSIFDSTADDR_IN6: 210 case SIOCSIFFLAGS: 211 case SIOCSIFGENERIC: 212 case SIOCSIFMEDIA: 213 case SIOCSIFMETRIC: 214 case SIOCSIFMTU: 215 case SIOCSIFNETMASK: 216 case SIOCSIFNETMASK_IN6: 217 case SIOCSNDFLUSH_IN6: 218 case SIOCSPFXFLUSH_IN6: 219 case SIOCSRTRFLUSH_IN6: 220 case SIOCSVH: 221 case TAPGIFNAME: 222 return ncmd; 223 default: 224 (void)if43_20_hook_f_call(ncmd); 225 return ncmd; 226 } 227 } 228 } 229 230 int 231 compat_ifioctl(struct socket *so, u_long ocmd, u_long cmd, void *data, 232 struct lwp *l) 233 { 234 int error; 235 struct ifreq *ifr = (struct ifreq *)data; 236 struct ifreq ifrb; 237 struct oifreq *oifr = NULL; 238 struct ifnet *ifp; 239 struct sockaddr *sa; 240 struct psref psref; 241 int bound = curlwp_bind(); 242 243 ifp = if_get(ifr->ifr_name, &psref); 244 if (ifp == NULL) { 245 curlwp_bindx(bound); 246 return ENXIO; 247 } 248 249 /* 250 * If we have not been converted, make sure that we are. 251 * (because the upper layer handles old socket calls, but 252 * not oifreq calls. 253 */ 254 if (cmd == ocmd) { 255 cmd = compat_cvtcmd(ocmd); 256 } 257 if (cmd != ocmd) { 258 oifr = data; 259 data = ifr = &ifrb; 260 ifreqo2n(oifr, ifr); 261 } 262 263 switch (ocmd) { 264 case OSIOCSIFADDR: 265 case OSIOCSIFDSTADDR: 266 case OSIOCSIFBRDADDR: 267 case OSIOCSIFNETMASK: 268 sa = &ifr->ifr_addr; 269 #if BYTE_ORDER != BIG_ENDIAN 270 if (sa->sa_family == 0 && sa->sa_len < 16) { 271 sa->sa_family = sa->sa_len; 272 sa->sa_len = 16; 273 } 274 #else 275 if (sa->sa_len == 0) 276 sa->sa_len = 16; 277 #endif 278 break; 279 } 280 281 error = (*so->so_proto->pr_usrreqs->pr_ioctl)(so, cmd, ifr, ifp); 282 if_put(ifp, &psref); 283 curlwp_bindx(bound); 284 285 switch (ocmd) { 286 case OOSIOCGIFADDR: 287 case OOSIOCGIFDSTADDR: 288 case OOSIOCGIFBRDADDR: 289 case OOSIOCGIFNETMASK: 290 *(u_int16_t *)&ifr->ifr_addr = 291 ((struct sockaddr *)&ifr->ifr_addr)->sa_family; 292 break; 293 } 294 295 if (cmd != ocmd) 296 ifreqn2o(oifr, ifr); 297 298 return error; 299 } 300 301 MODULE_SET_HOOK2(if_43_hook, "if_43", do_compat_cvtcmd, compat_ifioctl); 302 MODULE_UNSET_HOOK2(if_43_hook); 303 304 int 305 if_43_init(void) 306 { 307 308 if_43_hook_set(); 309 return 0; 310 } 311 312 int 313 if_43_fini(void) 314 { 315 316 if_43_hook_unset(); 317 return 0; 318 } 319 #endif /* defined(COMPAT_43) */ 320
Indexes created Mon Oct 20 08:09:54 GMT 2025