/* $NetBSD: if_media_80.c,v 1.5 2022/08/03 01:38:51 riastradh Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1997 * Jonathan Stone and Jason R. Thorpe. All rights reserved. * * This software is derived from information provided by Matt Thomas. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Jonathan Stone * and Jason R. Thorpe for the NetBSD Project. * 4. The names of the authors may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: if_media_80.c,v 1.5 2022/08/03 01:38:51 riastradh Exp $"); #include <sys/param.h> #include <sys/kernel.h> #include <sys/syscallargs.h> #include <sys/errno.h> #include <sys/malloc.h> #include <sys/proc.h> #include <sys/compat_stub.h> #include <net/if.h> #include <net/if_media.h> #include <compat/sys/sockio.h> #include <compat/common/compat_mod.h> static void ifmword_n2o(int *oldwd, int *newwd) { if (IFM_SUBTYPE(*newwd) > IFM_OTHER) *oldwd = (*newwd & ~(_IFM_ETH_XTMASK | IFM_TMASK)) | IFM_OTHER; else *oldwd = *newwd; } /*ARGSUSED*/ static int compat_ifmediareq_pre(struct ifreq *ifr, u_long *cmd, bool *do_post) { struct ifmediareq *ifmr = (struct ifmediareq *)ifr; switch (*cmd) { case SIOCSIFMEDIA_80: *cmd = SIOCSIFMEDIA; /* Convert to new one */ if ((IFM_TYPE(ifr->ifr_media) == IFM_ETHER) && IFM_SUBTYPE(ifr->ifr_media) > IFM_OTHER) { /* Clear unused bits to not to change to wrong media */ ifr->ifr_media &= ~_IFM_ETH_XTMASK; } return 0; case SIOCGIFMEDIA_80: *cmd = SIOCGIFMEDIA; /* Convert to new one */ if (ifmr->ifm_count != 0) { /* * Tell the upper layer to try to convert each ifmedia * entry in the post process. */ *do_post = true; } return 0; default: return 0; } } /*ARGSUSED*/ static int compat_ifmediareq_post(struct ifreq *ifr, u_long cmd) { struct ifmediareq *ifmr = (struct ifmediareq *)ifr; size_t minwords; size_t count; int error, *kptr; switch (cmd) { case SIOCSIFMEDIA: return 0; case SIOCGIFMEDIA: if (ifmr->ifm_count < 0) return EINVAL; /* * ifmr->ifm_count was already ajusted in ifmedia_ioctl(), so * there is no problem to trust ifm_count. */ minwords = ifmr->ifm_count; kptr = malloc(minwords * sizeof(*kptr), M_TEMP, M_WAITOK|M_ZERO); if (kptr == NULL) return ENOMEM; /* * Convert ifm_current and ifm_active. * It's not required to convert ifm_mask. */ ifmword_n2o(&ifmr->ifm_current, &ifmr->ifm_current); ifmword_n2o(&ifmr->ifm_active, &ifmr->ifm_active); /* Convert ifm_ulist array */ for (count = 0; count < minwords; count++) { int oldmwd; error = ufetch_int(&ifmr->ifm_ulist[count], &oldmwd); if (error != 0) goto out; ifmword_n2o(&kptr[count], &oldmwd); } /* Copy to userland in old format */ error = copyout(kptr, ifmr->ifm_ulist, minwords * sizeof(*kptr)); out: free(kptr, M_TEMP); return error; default: return 0; } } void ifmedia_80_init(void) { MODULE_HOOK_SET(ifmedia_80_pre_hook, compat_ifmediareq_pre); MODULE_HOOK_SET(ifmedia_80_post_hook, compat_ifmediareq_post); } void ifmedia_80_fini(void) { MODULE_HOOK_UNSET(ifmedia_80_post_hook); MODULE_HOOK_UNSET(ifmedia_80_pre_hook); }
