if_43.c revision 1.14.2.5
1 /* $NetBSD: if_43.c,v 1.14.2.5 2018/09/21 02:56:22 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 1.14.2.5 2018/09/21 02:56:22 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_atm.h> 69 #include <net/if_tap.h> 70 #include <net80211/ieee80211_ioctl.h> 71 #include <netinet6/in6_var.h> 72 #include <netinet6/nd6.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/if_43.h> 78 #include <uvm/uvm_extern.h> 79 80 #if defined(COMPAT_43) 81 82 /* 83 * Hook for calling the if43_20 compatability routine. 84 * 85 * XXX The if43_20 routine doesn't really have any effect, since its 86 * XXX return value is ignored (see compat/common/if_43.c)! 87 */ 88 MODULE_CALL_HOOK_DECL(if43_20_hook, f, (u_long ncmd), (ncmd), enosys()); 89 MODULE_CALL_HOOK(if43_20_hook, f, (u_long ncmd), (ncmd), enosys()); 90 91 /* 92 * Use a wrapper so that the compat_cvtcmd() can return a u_long 93 */ 94 static int 95 do_compat_cvtcmd(u_long *ncmd, u_long ocmd) 96 { 97 98 *ncmd = compat_cvtcmd(ocmd); 99 return 0; 100 } 101 102 u_long 103 compat_cvtcmd(u_long cmd) 104 { 105 u_long ncmd; 106 107 if (IOCPARM_LEN(cmd) != sizeof(struct oifreq)) 108 return cmd; 109 110 switch (cmd) { 111 case OSIOCSIFADDR: 112 return SIOCSIFADDR; 113 case OOSIOCGIFADDR: 114 return SIOCGIFADDR; 115 case OSIOCSIFDSTADDR: 116 return SIOCSIFDSTADDR; 117 case OOSIOCGIFDSTADDR: 118 return SIOCGIFDSTADDR; 119 case OSIOCSIFFLAGS: 120 return SIOCSIFFLAGS; 121 case OSIOCGIFFLAGS: 122 return SIOCGIFFLAGS; 123 case OOSIOCGIFBRDADDR: 124 return SIOCGIFBRDADDR; 125 case OSIOCSIFBRDADDR: 126 return SIOCSIFBRDADDR; 127 case OOSIOCGIFCONF: 128 return SIOCGIFCONF; 129 case OOSIOCGIFNETMASK: 130 return SIOCGIFNETMASK; 131 case OSIOCSIFNETMASK: 132 return SIOCSIFNETMASK; 133 case OSIOCGIFCONF: 134 return SIOCGIFCONF; 135 case OSIOCADDMULTI: 136 return SIOCADDMULTI; 137 case OSIOCDELMULTI: 138 return SIOCDELMULTI; 139 case OSIOCSIFMEDIA: 140 return SIOCSIFMEDIA; 141 case OSIOCGIFMTU: 142 return SIOCGIFMTU; 143 case OSIOCGIFDATA: 144 return SIOCGIFDATA; 145 case OSIOCZIFDATA: 146 return SIOCZIFDATA; 147 case OBIOCGETIF: 148 return BIOCGETIF; 149 case OBIOCSETIF: 150 return BIOCSETIF; 151 case OTAPGIFNAME: 152 return TAPGIFNAME; 153 default: 154 /* 155 * XXX: the following code should be removed and the 156 * needing treatment ioctls should move to the switch 157 * above. 158 */ 159 ncmd = ((cmd) & ~(IOCPARM_MASK << IOCPARM_SHIFT)) | 160 (sizeof(struct ifreq) << IOCPARM_SHIFT); 161 switch (ncmd) { 162 case BIOCGETIF: 163 case BIOCSETIF: 164 case GREDSOCK: 165 case GREGADDRD: 166 case GREGADDRS: 167 case GREGPROTO: 168 case GRESADDRD: 169 case GRESADDRS: 170 case GRESPROTO: 171 case GRESSOCK: 172 case SIOCADDMULTI: 173 case SIOCDELMULTI: 174 case SIOCDIFADDR: 175 case SIOCDIFADDR_IN6: 176 case SIOCDIFPHYADDR: 177 case SIOCGDEFIFACE_IN6: 178 case SIOCG80211NWID: 179 case SIOCG80211STATS: 180 case SIOCG80211ZSTATS: 181 case SIOCGIFADDR: 182 case SIOCGIFADDR_IN6: 183 case SIOCGIFAFLAG_IN6: 184 case SIOCGIFALIFETIME_IN6: 185 case SIOCGIFBRDADDR: 186 case SIOCGIFDLT: 187 case SIOCGIFDSTADDR: 188 case SIOCGIFDSTADDR_IN6: 189 case SIOCGIFFLAGS: 190 case SIOCGIFGENERIC: 191 case SIOCGIFMETRIC: 192 case SIOCGIFMTU: 193 case SIOCGIFNETMASK: 194 case SIOCGIFNETMASK_IN6: 195 case SIOCGIFPDSTADDR: 196 case SIOCGIFPDSTADDR_IN6: 197 case SIOCGIFPSRCADDR: 198 case SIOCGIFPSRCADDR_IN6: 199 case SIOCGIFSTAT_ICMP6: 200 case SIOCGIFSTAT_IN6: 201 case SIOCGPVCSIF: 202 case SIOCGVH: 203 case SIOCIFCREATE: 204 case SIOCIFDESTROY: 205 case SIOCS80211NWID: 206 case SIOCSDEFIFACE_IN6: 207 case SIOCSIFADDR: 208 case SIOCSIFADDR_IN6: 209 case SIOCSIFBRDADDR: 210 case SIOCSIFDSTADDR: 211 case SIOCSIFDSTADDR_IN6: 212 case SIOCSIFFLAGS: 213 case SIOCSIFGENERIC: 214 case SIOCSIFMEDIA: 215 case SIOCSIFMETRIC: 216 case SIOCSIFMTU: 217 case SIOCSIFNETMASK: 218 case SIOCSIFNETMASK_IN6: 219 case SIOCSNDFLUSH_IN6: 220 case SIOCSPFXFLUSH_IN6: 221 case SIOCSPVCSIF: 222 case SIOCSRTRFLUSH_IN6: 223 case SIOCSVH: 224 case TAPGIFNAME: 225 return ncmd; 226 default: 227 (void)if43_20_hook_f_call(ncmd); 228 return ncmd; 229 } 230 } 231 } 232 233 int 234 compat_ifioctl(struct socket *so, u_long ocmd, u_long cmd, void *data, 235 struct lwp *l) 236 { 237 int error; 238 struct ifreq *ifr = (struct ifreq *)data; 239 struct ifreq ifrb; 240 struct oifreq *oifr = NULL; 241 struct ifnet *ifp; 242 struct sockaddr *sa; 243 struct psref psref; 244 int bound = curlwp_bind(); 245 246 ifp = if_get(ifr->ifr_name, &psref); 247 if (ifp == NULL) { 248 curlwp_bindx(bound); 249 return ENXIO; 250 } 251 252 /* 253 * If we have not been converted, make sure that we are. 254 * (because the upper layer handles old socket calls, but 255 * not oifreq calls. 256 */ 257 if (cmd == ocmd) { 258 cmd = compat_cvtcmd(ocmd); 259 } 260 if (cmd != ocmd) { 261 oifr = data; 262 data = ifr = &ifrb; 263 ifreqo2n(oifr, ifr); 264 } 265 266 switch (ocmd) { 267 case OSIOCSIFADDR: 268 case OSIOCSIFDSTADDR: 269 case OSIOCSIFBRDADDR: 270 case OSIOCSIFNETMASK: 271 sa = &ifr->ifr_addr; 272 #if BYTE_ORDER != BIG_ENDIAN 273 if (sa->sa_family == 0 && sa->sa_len < 16) { 274 sa->sa_family = sa->sa_len; 275 sa->sa_len = 16; 276 } 277 #else 278 if (sa->sa_len == 0) 279 sa->sa_len = 16; 280 #endif 281 break; 282 } 283 284 error = (*so->so_proto->pr_usrreqs->pr_ioctl)(so, cmd, ifr, ifp); 285 if_put(ifp, &psref); 286 curlwp_bindx(bound); 287 288 switch (ocmd) { 289 case OOSIOCGIFADDR: 290 case OOSIOCGIFDSTADDR: 291 case OOSIOCGIFBRDADDR: 292 case OOSIOCGIFNETMASK: 293 *(u_int16_t *)&ifr->ifr_addr = 294 ((struct sockaddr *)&ifr->ifr_addr)->sa_family; 295 break; 296 } 297 298 if (cmd != ocmd) 299 ifreqn2o(oifr, ifr); 300 301 return error; 302 } 303 304 MODULE_SET_HOOK2(if_43_hook, "if_43", do_compat_cvtcmd, compat_ifioctl); 305 MODULE_UNSET_HOOK2(if_43_hook); 306 307 void 308 if_43_init(void) 309 { 310 311 if_43_hook_set(); 312 } 313 314 void 315 if_43_fini(void) 316 { 317 318 if_43_hook_unset(); 319 } 320 #endif /* defined(COMPAT_43) */ 321
Indexes created Thu Oct 23 22:10:10 GMT 2025