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("$FreeBSD$");
   32 
   33 #include "opt_compat.h"
   34 
   35 #include <sys/param.h>
   36 #include <sys/cdio.h>
   37 #include <sys/fcntl.h>
   38 #include <sys/filio.h>
   39 #include <sys/file.h>
   40 #include <sys/ioccom.h>
   41 #include <sys/malloc.h>
   42 #include <sys/mdioctl.h>
   43 #include <sys/memrange.h>
   44 #include <sys/pciio.h>
   45 #include <sys/proc.h>
   46 #include <sys/syscall.h>
   47 #include <sys/syscallsubr.h>
   48 #include <sys/sysctl.h>
   49 #include <sys/sysent.h>
   50 #include <sys/sysproto.h>
   51 #include <sys/systm.h>
   52 
   53 #include <compat/freebsd32/freebsd32.h>
   54 #include <compat/freebsd32/freebsd32_ioctl.h>
   55 #include <compat/freebsd32/freebsd32_proto.h>
   56 
   57 /* Cannot get exact size in 64-bit due to alignment issue of entire struct. */
   58 CTASSERT((sizeof(struct md_ioctl32)+4) == 436);
   59 CTASSERT(sizeof(struct ioc_read_toc_entry32) == 8);
   60 CTASSERT(sizeof(struct ioc_toc_header32) == 4);
   61 CTASSERT(sizeof(struct mem_range_op32) == 12);
   62 CTASSERT(sizeof(struct pci_conf_io32) == 36);
   63 CTASSERT(sizeof(struct pci_match_conf32) == 44);
   64 CTASSERT(sizeof(struct pci_conf32) == 44);
   65 
   66 
   67 static int
   68 freebsd32_ioctl_md(struct thread *td, struct freebsd32_ioctl_args *uap,
   69     struct file *fp)
   70 {
   71         struct md_ioctl mdv;
   72         struct md_ioctl32 md32;
   73         u_long com = 0;
   74         int i, error;
   75 
   76         if (uap->com & IOC_IN) {
   77                 if ((error = copyin(uap->data, &md32, sizeof(md32)))) {
   78                         return (error);
   79                 }
   80                 CP(md32, mdv, md_version);
   81                 CP(md32, mdv, md_unit);
   82                 CP(md32, mdv, md_type);
   83                 PTRIN_CP(md32, mdv, md_file);
   84                 CP(md32, mdv, md_mediasize);
   85                 CP(md32, mdv, md_sectorsize);
   86                 CP(md32, mdv, md_options);
   87                 CP(md32, mdv, md_base);
   88                 CP(md32, mdv, md_fwheads);
   89                 CP(md32, mdv, md_fwsectors);
   90         } else if (uap->com & IOC_OUT) {
   91                 /*
   92                  * Zero the buffer so the user always
   93                  * gets back something deterministic.
   94                  */
   95                 bzero(&mdv, sizeof mdv);
   96         }
   97 
   98         switch (uap->com) {
   99         case MDIOCATTACH_32:
  100                 com = MDIOCATTACH;
  101                 break;
  102         case MDIOCDETACH_32:
  103                 com = MDIOCDETACH;
  104                 break;
  105         case MDIOCQUERY_32:
  106                 com = MDIOCQUERY;
  107                 break;
  108         case MDIOCLIST_32:
  109                 com = MDIOCLIST;
  110                 break;
  111         default:
  112                 panic("%s: unknown MDIOC %#x", __func__, uap->com);
  113         }
  114         error = fo_ioctl(fp, com, (caddr_t)&mdv, td->td_ucred, td);
  115         if (error == 0 && (com & IOC_OUT)) {
  116                 CP(mdv, md32, md_version);
  117                 CP(mdv, md32, md_unit);
  118                 CP(mdv, md32, md_type);
  119                 PTROUT_CP(mdv, md32, md_file);
  120                 CP(mdv, md32, md_mediasize);
  121                 CP(mdv, md32, md_sectorsize);
  122                 CP(mdv, md32, md_options);
  123                 CP(mdv, md32, md_base);
  124                 CP(mdv, md32, md_fwheads);
  125                 CP(mdv, md32, md_fwsectors);
  126                 if (com == MDIOCLIST) {
  127                         /*
  128                          * Use MDNPAD, and not MDNPAD32.  Padding is
  129                          * allocated and used by compat32 ABI.
  130                          */
  131                         for (i = 0; i < MDNPAD; i++)
  132                                 CP(mdv, md32, md_pad[i]);
  133                 }
  134                 error = copyout(&md32, uap->data, sizeof(md32));
  135         }
  136         return error;
  137 }
  138 
  139 
  140 static int
  141 freebsd32_ioctl_ioc_toc_header(struct thread *td,
  142     struct freebsd32_ioctl_args *uap, struct file *fp)
  143 {
  144         struct ioc_toc_header toch;
  145         struct ioc_toc_header32 toch32;
  146         int error;
  147 
  148         if ((error = copyin(uap->data, &toch32, sizeof(toch32))))
  149                 return (error);
  150         CP(toch32, toch, len);
  151         CP(toch32, toch, starting_track);
  152         CP(toch32, toch, ending_track);
  153         error = fo_ioctl(fp, CDIOREADTOCHEADER, (caddr_t)&toch,
  154             td->td_ucred, td);
  155         return (error);
  156 }
  157 
  158 
  159 static int
  160 freebsd32_ioctl_ioc_read_toc(struct thread *td,
  161     struct freebsd32_ioctl_args *uap, struct file *fp)
  162 {
  163         struct ioc_read_toc_entry toce;
  164         struct ioc_read_toc_entry32 toce32;
  165         int error;
  166 
  167         if ((error = copyin(uap->data, &toce32, sizeof(toce32))))
  168                 return (error);
  169         CP(toce32, toce, address_format);
  170         CP(toce32, toce, starting_track);
  171         CP(toce32, toce, data_len);
  172         PTRIN_CP(toce32, toce, data);
  173 
  174         if ((error = fo_ioctl(fp, CDIOREADTOCENTRYS, (caddr_t)&toce,
  175             td->td_ucred, td))) {
  176                 CP(toce, toce32, address_format);
  177                 CP(toce, toce32, starting_track);
  178                 CP(toce, toce32, data_len);
  179                 PTROUT_CP(toce, toce32, data);
  180                 error = copyout(&toce32, uap->data, sizeof(toce32));
  181         }
  182         return error;
  183 }
  184 
  185 static int
  186 freebsd32_ioctl_fiodgname(struct thread *td,
  187     struct freebsd32_ioctl_args *uap, struct file *fp)
  188 {
  189         struct fiodgname_arg fgn;
  190         struct fiodgname_arg32 fgn32;
  191         int error;
  192 
  193         if ((error = copyin(uap->data, &fgn32, sizeof fgn32)) != 0)
  194                 return (error);
  195         CP(fgn32, fgn, len);
  196         PTRIN_CP(fgn32, fgn, buf);
  197         error = fo_ioctl(fp, FIODGNAME, (caddr_t)&fgn, td->td_ucred, td);
  198         return (error);
  199 }
  200 
  201 static int
  202 freebsd32_ioctl_memrange(struct thread *td,
  203     struct freebsd32_ioctl_args *uap, struct file *fp)
  204 {
  205         struct mem_range_op mro;
  206         struct mem_range_op32 mro32;
  207         int error;
  208         u_long com;
  209 
  210         if ((error = copyin(uap->data, &mro32, sizeof(mro32))) != 0)
  211                 return (error);
  212 
  213         PTRIN_CP(mro32, mro, mo_desc);
  214         CP(mro32, mro, mo_arg[0]);
  215         CP(mro32, mro, mo_arg[1]);
  216 
  217         com = 0;
  218         switch (uap->com) {
  219         case MEMRANGE_GET32:
  220                 com = MEMRANGE_GET;
  221                 break;
  222 
  223         case MEMRANGE_SET32:
  224                 com = MEMRANGE_SET;
  225                 break;
  226 
  227         default:
  228                 panic("%s: unknown MEMRANGE %#x", __func__, uap->com);
  229         }
  230 
  231         if ((error = fo_ioctl(fp, com, (caddr_t)&mro, td->td_ucred, td)) != 0)
  232                 return (error);
  233 
  234         if ( (com & IOC_OUT) ) {
  235                 CP(mro, mro32, mo_arg[0]);
  236                 CP(mro, mro32, mo_arg[1]);
  237 
  238                 error = copyout(&mro32, uap->data, sizeof(mro32));
  239         }
  240 
  241         return (error);
  242 }
  243 
  244 static int
  245 freebsd32_ioctl_pciocgetconf(struct thread *td,
  246     struct freebsd32_ioctl_args *uap, struct file *fp)
  247 {
  248         struct pci_conf_io pci;
  249         struct pci_conf_io32 pci32;
  250         struct pci_match_conf32 pmc32;
  251         struct pci_match_conf32 *pmc32p;
  252         struct pci_match_conf pmc;
  253         struct pci_match_conf *pmcp;
  254         struct pci_conf32 pc32;
  255         struct pci_conf32 *pc32p;
  256         struct pci_conf pc;
  257         struct pci_conf *pcp;
  258         u_int32_t i;
  259         u_int32_t npat_to_convert;
  260         u_int32_t nmatch_to_convert;
  261         vm_offset_t addr;
  262         int error;
  263 
  264         if ((error = copyin(uap->data, &pci32, sizeof(pci32))) != 0)
  265                 return (error);
  266 
  267         CP(pci32, pci, num_patterns);
  268         CP(pci32, pci, offset);
  269         CP(pci32, pci, generation);
  270 
  271         npat_to_convert = pci32.pat_buf_len / sizeof(struct pci_match_conf32);
  272         pci.pat_buf_len = npat_to_convert * sizeof(struct pci_match_conf);
  273         pci.patterns = NULL;
  274         nmatch_to_convert = pci32.match_buf_len / sizeof(struct pci_conf32);
  275         pci.match_buf_len = nmatch_to_convert * sizeof(struct pci_conf);
  276         pci.matches = NULL;
  277 
  278         if ((error = copyout_map(td, &addr, pci.pat_buf_len)) != 0)
  279                 goto cleanup;
  280         pci.patterns = (struct pci_match_conf *)addr;
  281         if ((error = copyout_map(td, &addr, pci.match_buf_len)) != 0)
  282                 goto cleanup;
  283         pci.matches = (struct pci_conf *)addr;
  284 
  285         npat_to_convert = min(npat_to_convert, pci.num_patterns);
  286 
  287         for (i = 0, pmc32p = (struct pci_match_conf32 *)PTRIN(pci32.patterns),
  288              pmcp = pci.patterns;
  289              i < npat_to_convert; i++, pmc32p++, pmcp++) {
  290                 if ((error = copyin(pmc32p, &pmc32, sizeof(pmc32))) != 0)
  291                         goto cleanup;
  292                 CP(pmc32,pmc,pc_sel);
  293                 strlcpy(pmc.pd_name, pmc32.pd_name, sizeof(pmc.pd_name));
  294                 CP(pmc32,pmc,pd_unit);
  295                 CP(pmc32,pmc,pc_vendor);
  296                 CP(pmc32,pmc,pc_device);
  297                 CP(pmc32,pmc,pc_class);
  298                 CP(pmc32,pmc,flags);
  299                 if ((error = copyout(&pmc, pmcp, sizeof(pmc))) != 0)
  300                         goto cleanup;
  301         }
  302 
  303         if ((error = fo_ioctl(fp, PCIOCGETCONF, (caddr_t)&pci,
  304                               td->td_ucred, td)) != 0)
  305                 goto cleanup;
  306 
  307         nmatch_to_convert = min(nmatch_to_convert, pci.num_matches);
  308 
  309         for (i = 0, pcp = pci.matches,
  310              pc32p = (struct pci_conf32 *)PTRIN(pci32.matches);
  311              i < nmatch_to_convert; i++, pcp++, pc32p++) {
  312                 if ((error = copyin(pcp, &pc, sizeof(pc))) != 0)
  313                         goto cleanup;
  314                 CP(pc,pc32,pc_sel);
  315                 CP(pc,pc32,pc_hdr);
  316                 CP(pc,pc32,pc_subvendor);
  317                 CP(pc,pc32,pc_subdevice);
  318                 CP(pc,pc32,pc_vendor);
  319                 CP(pc,pc32,pc_device);
  320                 CP(pc,pc32,pc_class);
  321                 CP(pc,pc32,pc_subclass);
  322                 CP(pc,pc32,pc_progif);
  323                 CP(pc,pc32,pc_revid);
  324                 strlcpy(pc32.pd_name, pc.pd_name, sizeof(pc32.pd_name));
  325                 CP(pc,pc32,pd_unit);
  326                 if ((error = copyout(&pc32, pc32p, sizeof(pc32))) != 0)
  327                         goto cleanup;
  328         }
  329 
  330         CP(pci, pci32, num_matches);
  331         CP(pci, pci32, offset);
  332         CP(pci, pci32, generation);
  333         CP(pci, pci32, status);
  334 
  335         error = copyout(&pci32, uap->data, sizeof(pci32));
  336 
  337 cleanup:
  338         if (pci.patterns)
  339                 copyout_unmap(td, (vm_offset_t)pci.patterns, pci.pat_buf_len);
  340         if (pci.matches)
  341                 copyout_unmap(td, (vm_offset_t)pci.matches, pci.match_buf_len);
  342 
  343         return (error);
  344 }
  345 
  346 int
  347 freebsd32_ioctl(struct thread *td, struct freebsd32_ioctl_args *uap)
  348 {
  349         struct ioctl_args ap /*{
  350                 int     fd;
  351                 u_long  com;
  352                 caddr_t data;
  353         }*/ ;
  354         struct file *fp;
  355         int error;
  356 
  357         if ((error = fget(td, uap->fd, &fp)) != 0)
  358                 return (error);
  359         if ((fp->f_flag & (FREAD | FWRITE)) == 0) {
  360                 fdrop(fp, td);
  361                 return (EBADF);
  362         }
  363 
  364         switch (uap->com) {
  365         case MDIOCATTACH_32:    /* FALLTHROUGH */
  366         case MDIOCDETACH_32:    /* FALLTHROUGH */
  367         case MDIOCQUERY_32:     /* FALLTHROUGH */
  368         case MDIOCLIST_32:
  369                 error = freebsd32_ioctl_md(td, uap, fp);
  370                 break;
  371 
  372         case CDIOREADTOCENTRYS_32:
  373                 error = freebsd32_ioctl_ioc_read_toc(td, uap, fp);
  374                 break;
  375 
  376         case CDIOREADTOCHEADER_32:
  377                 error = freebsd32_ioctl_ioc_toc_header(td, uap, fp);
  378                 break;
  379 
  380         case FIODGNAME_32:
  381                 error = freebsd32_ioctl_fiodgname(td, uap, fp);
  382                 break;
  383 
  384         case MEMRANGE_GET32:    /* FALLTHROUGH */
  385         case MEMRANGE_SET32:
  386                 error = freebsd32_ioctl_memrange(td, uap, fp);
  387                 break;
  388 
  389         case PCIOCGETCONF_32:
  390                 error = freebsd32_ioctl_pciocgetconf(td, uap, fp);
  391                 break;
  392 
  393         default:
  394                 fdrop(fp, td);
  395                 ap.fd = uap->fd;
  396                 ap.com = uap->com;
  397                 PTRIN_CP(*uap, ap, data);
  398                 return ioctl(td, &ap);
  399         }
  400 
  401         fdrop(fp, td);
  402         return error;
  403 }
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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
