freebsd32_ioctl.c

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    1 /*-
    2  * Copyright (c) 2008 David E. O'Brien
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. Neither the name of the author nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD: releng/9.2/sys/compat/freebsd32/freebsd32_ioctl.c 225617 2011-09-16 13:58:51Z kmacy $");
   32 
   33 #include "opt_compat.h"
   34 
   35 #include <sys/param.h>
   36 #include <sys/capability.h>
   37 #include <sys/cdio.h>
   38 #include <sys/fcntl.h>
   39 #include <sys/filio.h>
   40 #include <sys/file.h>
   41 #include <sys/ioccom.h>
   42 #include <sys/malloc.h>
   43 #include <sys/mdioctl.h>
   44 #include <sys/memrange.h>
   45 #include <sys/pciio.h>
   46 #include <sys/proc.h>
   47 #include <sys/syscall.h>
   48 #include <sys/syscallsubr.h>
   49 #include <sys/sysctl.h>
   50 #include <sys/sysent.h>
   51 #include <sys/sysproto.h>
   52 #include <sys/systm.h>
   53 
   54 #include <compat/freebsd32/freebsd32.h>
   55 #include <compat/freebsd32/freebsd32_ioctl.h>
   56 #include <compat/freebsd32/freebsd32_proto.h>
   57 
   58 /* Cannot get exact size in 64-bit due to alignment issue of entire struct. */
   59 CTASSERT((sizeof(struct md_ioctl32)+4) == 436);
   60 CTASSERT(sizeof(struct ioc_read_toc_entry32) == 8);
   61 CTASSERT(sizeof(struct ioc_toc_header32) == 4);
   62 CTASSERT(sizeof(struct mem_range_op32) == 12);
   63 CTASSERT(sizeof(struct pci_conf_io32) == 36);
   64 CTASSERT(sizeof(struct pci_match_conf32) == 44);
   65 CTASSERT(sizeof(struct pci_conf32) == 44);
   66 
   67 
   68 static int
   69 freebsd32_ioctl_md(struct thread *td, struct freebsd32_ioctl_args *uap,
   70     struct file *fp)
   71 {
   72         struct md_ioctl mdv;
   73         struct md_ioctl32 md32;
   74         u_long com = 0;
   75         int i, error;
   76 
   77         if (uap->com & IOC_IN) {
   78                 if ((error = copyin(uap->data, &md32, sizeof(md32)))) {
   79                         return (error);
   80                 }
   81                 CP(md32, mdv, md_version);
   82                 CP(md32, mdv, md_unit);
   83                 CP(md32, mdv, md_type);
   84                 PTRIN_CP(md32, mdv, md_file);
   85                 CP(md32, mdv, md_mediasize);
   86                 CP(md32, mdv, md_sectorsize);
   87                 CP(md32, mdv, md_options);
   88                 CP(md32, mdv, md_base);
   89                 CP(md32, mdv, md_fwheads);
   90                 CP(md32, mdv, md_fwsectors);
   91         } else if (uap->com & IOC_OUT) {
   92                 /*
   93                  * Zero the buffer so the user always
   94                  * gets back something deterministic.
   95                  */
   96                 bzero(&mdv, sizeof mdv);
   97         }
   98 
   99         switch (uap->com) {
  100         case MDIOCATTACH_32:
  101                 com = MDIOCATTACH;
  102                 break;
  103         case MDIOCDETACH_32:
  104                 com = MDIOCDETACH;
  105                 break;
  106         case MDIOCQUERY_32:
  107                 com = MDIOCQUERY;
  108                 break;
  109         case MDIOCLIST_32:
  110                 com = MDIOCLIST;
  111                 break;
  112         default:
  113                 panic("%s: unknown MDIOC %#x", __func__, uap->com);
  114         }
  115         error = fo_ioctl(fp, com, (caddr_t)&mdv, td->td_ucred, td);
  116         if (error == 0 && (com & IOC_OUT)) {
  117                 CP(mdv, md32, md_version);
  118                 CP(mdv, md32, md_unit);
  119                 CP(mdv, md32, md_type);
  120                 PTROUT_CP(mdv, md32, md_file);
  121                 CP(mdv, md32, md_mediasize);
  122                 CP(mdv, md32, md_sectorsize);
  123                 CP(mdv, md32, md_options);
  124                 CP(mdv, md32, md_base);
  125                 CP(mdv, md32, md_fwheads);
  126                 CP(mdv, md32, md_fwsectors);
  127                 if (com == MDIOCLIST) {
  128                         /*
  129                          * Use MDNPAD, and not MDNPAD32.  Padding is
  130                          * allocated and used by compat32 ABI.
  131                          */
  132                         for (i = 0; i < MDNPAD; i++)
  133                                 CP(mdv, md32, md_pad[i]);
  134                 }
  135                 error = copyout(&md32, uap->data, sizeof(md32));
  136         }
  137         return error;
  138 }
  139 
  140 
  141 static int
  142 freebsd32_ioctl_ioc_toc_header(struct thread *td,
  143     struct freebsd32_ioctl_args *uap, struct file *fp)
  144 {
  145         struct ioc_toc_header toch;
  146         struct ioc_toc_header32 toch32;
  147         int error;
  148 
  149         if ((error = copyin(uap->data, &toch32, sizeof(toch32))))
  150                 return (error);
  151         CP(toch32, toch, len);
  152         CP(toch32, toch, starting_track);
  153         CP(toch32, toch, ending_track);
  154         error = fo_ioctl(fp, CDIOREADTOCHEADER, (caddr_t)&toch,
  155             td->td_ucred, td);
  156         return (error);
  157 }
  158 
  159 
  160 static int
  161 freebsd32_ioctl_ioc_read_toc(struct thread *td,
  162     struct freebsd32_ioctl_args *uap, struct file *fp)
  163 {
  164         struct ioc_read_toc_entry toce;
  165         struct ioc_read_toc_entry32 toce32;
  166         int error;
  167 
  168         if ((error = copyin(uap->data, &toce32, sizeof(toce32))))
  169                 return (error);
  170         CP(toce32, toce, address_format);
  171         CP(toce32, toce, starting_track);
  172         CP(toce32, toce, data_len);
  173         PTRIN_CP(toce32, toce, data);
  174 
  175         if ((error = fo_ioctl(fp, CDIOREADTOCENTRYS, (caddr_t)&toce,
  176             td->td_ucred, td))) {
  177                 CP(toce, toce32, address_format);
  178                 CP(toce, toce32, starting_track);
  179                 CP(toce, toce32, data_len);
  180                 PTROUT_CP(toce, toce32, data);
  181                 error = copyout(&toce32, uap->data, sizeof(toce32));
  182         }
  183         return error;
  184 }
  185 
  186 static int
  187 freebsd32_ioctl_fiodgname(struct thread *td,
  188     struct freebsd32_ioctl_args *uap, struct file *fp)
  189 {
  190         struct fiodgname_arg fgn;
  191         struct fiodgname_arg32 fgn32;
  192         int error;
  193 
  194         if ((error = copyin(uap->data, &fgn32, sizeof fgn32)) != 0)
  195                 return (error);
  196         CP(fgn32, fgn, len);
  197         PTRIN_CP(fgn32, fgn, buf);
  198         error = fo_ioctl(fp, FIODGNAME, (caddr_t)&fgn, td->td_ucred, td);
  199         return (error);
  200 }
  201 
  202 static int
  203 freebsd32_ioctl_memrange(struct thread *td,
  204     struct freebsd32_ioctl_args *uap, struct file *fp)
  205 {
  206         struct mem_range_op mro;
  207         struct mem_range_op32 mro32;
  208         int error;
  209         u_long com;
  210 
  211         if ((error = copyin(uap->data, &mro32, sizeof(mro32))) != 0)
  212                 return (error);
  213 
  214         PTRIN_CP(mro32, mro, mo_desc);
  215         CP(mro32, mro, mo_arg[0]);
  216         CP(mro32, mro, mo_arg[1]);
  217 
  218         com = 0;
  219         switch (uap->com) {
  220         case MEMRANGE_GET32:
  221                 com = MEMRANGE_GET;
  222                 break;
  223 
  224         case MEMRANGE_SET32:
  225                 com = MEMRANGE_SET;
  226                 break;
  227 
  228         default:
  229                 panic("%s: unknown MEMRANGE %#x", __func__, uap->com);
  230         }
  231 
  232         if ((error = fo_ioctl(fp, com, (caddr_t)&mro, td->td_ucred, td)) != 0)
  233                 return (error);
  234 
  235         if ( (com & IOC_OUT) ) {
  236                 CP(mro, mro32, mo_arg[0]);
  237                 CP(mro, mro32, mo_arg[1]);
  238 
  239                 error = copyout(&mro32, uap->data, sizeof(mro32));
  240         }
  241 
  242         return (error);
  243 }
  244 
  245 static int
  246 freebsd32_ioctl_pciocgetconf(struct thread *td,
  247     struct freebsd32_ioctl_args *uap, struct file *fp)
  248 {
  249         struct pci_conf_io pci;
  250         struct pci_conf_io32 pci32;
  251         struct pci_match_conf32 pmc32;
  252         struct pci_match_conf32 *pmc32p;
  253         struct pci_match_conf pmc;
  254         struct pci_match_conf *pmcp;
  255         struct pci_conf32 pc32;
  256         struct pci_conf32 *pc32p;
  257         struct pci_conf pc;
  258         struct pci_conf *pcp;
  259         u_int32_t i;
  260         u_int32_t npat_to_convert;
  261         u_int32_t nmatch_to_convert;
  262         vm_offset_t addr;
  263         int error;
  264 
  265         if ((error = copyin(uap->data, &pci32, sizeof(pci32))) != 0)
  266                 return (error);
  267 
  268         CP(pci32, pci, num_patterns);
  269         CP(pci32, pci, offset);
  270         CP(pci32, pci, generation);
  271 
  272         npat_to_convert = pci32.pat_buf_len / sizeof(struct pci_match_conf32);
  273         pci.pat_buf_len = npat_to_convert * sizeof(struct pci_match_conf);
  274         pci.patterns = NULL;
  275         nmatch_to_convert = pci32.match_buf_len / sizeof(struct pci_conf32);
  276         pci.match_buf_len = nmatch_to_convert * sizeof(struct pci_conf);
  277         pci.matches = NULL;
  278 
  279         if ((error = copyout_map(td, &addr, pci.pat_buf_len)) != 0)
  280                 goto cleanup;
  281         pci.patterns = (struct pci_match_conf *)addr;
  282         if ((error = copyout_map(td, &addr, pci.match_buf_len)) != 0)
  283                 goto cleanup;
  284         pci.matches = (struct pci_conf *)addr;
  285 
  286         npat_to_convert = min(npat_to_convert, pci.num_patterns);
  287 
  288         for (i = 0, pmc32p = (struct pci_match_conf32 *)PTRIN(pci32.patterns),
  289              pmcp = pci.patterns;
  290              i < npat_to_convert; i++, pmc32p++, pmcp++) {
  291                 if ((error = copyin(pmc32p, &pmc32, sizeof(pmc32))) != 0)
  292                         goto cleanup;
  293                 CP(pmc32,pmc,pc_sel);
  294                 strlcpy(pmc.pd_name, pmc32.pd_name, sizeof(pmc.pd_name));
  295                 CP(pmc32,pmc,pd_unit);
  296                 CP(pmc32,pmc,pc_vendor);
  297                 CP(pmc32,pmc,pc_device);
  298                 CP(pmc32,pmc,pc_class);
  299                 CP(pmc32,pmc,flags);
  300                 if ((error = copyout(&pmc, pmcp, sizeof(pmc))) != 0)
  301                         goto cleanup;
  302         }
  303 
  304         if ((error = fo_ioctl(fp, PCIOCGETCONF, (caddr_t)&pci,
  305                               td->td_ucred, td)) != 0)
  306                 goto cleanup;
  307 
  308         nmatch_to_convert = min(nmatch_to_convert, pci.num_matches);
  309 
  310         for (i = 0, pcp = pci.matches,
  311              pc32p = (struct pci_conf32 *)PTRIN(pci32.matches);
  312              i < nmatch_to_convert; i++, pcp++, pc32p++) {
  313                 if ((error = copyin(pcp, &pc, sizeof(pc))) != 0)
  314                         goto cleanup;
  315                 CP(pc,pc32,pc_sel);
  316                 CP(pc,pc32,pc_hdr);
  317                 CP(pc,pc32,pc_subvendor);
  318                 CP(pc,pc32,pc_subdevice);
  319                 CP(pc,pc32,pc_vendor);
  320                 CP(pc,pc32,pc_device);
  321                 CP(pc,pc32,pc_class);
  322                 CP(pc,pc32,pc_subclass);
  323                 CP(pc,pc32,pc_progif);
  324                 CP(pc,pc32,pc_revid);
  325                 strlcpy(pc32.pd_name, pc.pd_name, sizeof(pc32.pd_name));
  326                 CP(pc,pc32,pd_unit);
  327                 if ((error = copyout(&pc32, pc32p, sizeof(pc32))) != 0)
  328                         goto cleanup;
  329         }
  330 
  331         CP(pci, pci32, num_matches);
  332         CP(pci, pci32, offset);
  333         CP(pci, pci32, generation);
  334         CP(pci, pci32, status);
  335 
  336         error = copyout(&pci32, uap->data, sizeof(pci32));
  337 
  338 cleanup:
  339         if (pci.patterns)
  340                 copyout_unmap(td, (vm_offset_t)pci.patterns, pci.pat_buf_len);
  341         if (pci.matches)
  342                 copyout_unmap(td, (vm_offset_t)pci.matches, pci.match_buf_len);
  343 
  344         return (error);
  345 }
  346 
  347 int
  348 freebsd32_ioctl(struct thread *td, struct freebsd32_ioctl_args *uap)
  349 {
  350         struct ioctl_args ap /*{
  351                 int     fd;
  352                 u_long  com;
  353                 caddr_t data;
  354         }*/ ;
  355         struct file *fp;
  356         int error;
  357 
  358         if ((error = fget(td, uap->fd, CAP_IOCTL, &fp)) != 0)
  359                 return (error);
  360         if ((fp->f_flag & (FREAD | FWRITE)) == 0) {
  361                 fdrop(fp, td);
  362                 return (EBADF);
  363         }
  364 
  365         switch (uap->com) {
  366         case MDIOCATTACH_32:    /* FALLTHROUGH */
  367         case MDIOCDETACH_32:    /* FALLTHROUGH */
  368         case MDIOCQUERY_32:     /* FALLTHROUGH */
  369         case MDIOCLIST_32:
  370                 error = freebsd32_ioctl_md(td, uap, fp);
  371                 break;
  372 
  373         case CDIOREADTOCENTRYS_32:
  374                 error = freebsd32_ioctl_ioc_read_toc(td, uap, fp);
  375                 break;
  376 
  377         case CDIOREADTOCHEADER_32:
  378                 error = freebsd32_ioctl_ioc_toc_header(td, uap, fp);
  379                 break;
  380 
  381         case FIODGNAME_32:
  382                 error = freebsd32_ioctl_fiodgname(td, uap, fp);
  383                 break;
  384 
  385         case MEMRANGE_GET32:    /* FALLTHROUGH */
  386         case MEMRANGE_SET32:
  387                 error = freebsd32_ioctl_memrange(td, uap, fp);
  388                 break;
  389 
  390         case PCIOCGETCONF_32:
  391                 error = freebsd32_ioctl_pciocgetconf(td, uap, fp);
  392                 break;
  393 
  394         default:
  395                 fdrop(fp, td);
  396                 ap.fd = uap->fd;
  397                 ap.com = uap->com;
  398                 PTRIN_CP(*uap, ap, data);
  399                 return sys_ioctl(td, &ap);
  400         }
  401 
  402         fdrop(fp, td);
  403         return error;
  404 }
Cache object: f57d7b9156069f441553615cc3894248
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FreeBSD/Linux Kernel Cross Reference sys/compat/freebsd32/freebsd32_ioctl.c

FreeBSD/Linux Kernel Cross Reference
sys/compat/freebsd32/freebsd32_ioctl.c
