freebsd32_ioctl.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 2008 David E. O'Brien
    5  * 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 author 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 AUTHOR 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 AUTHOR 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 
   32 #include <sys/cdefs.h>
   33 __FBSDID("$FreeBSD$");
   34 
   35 #include <sys/param.h>
   36 #include <sys/capsicum.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/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 #include <sys/uio.h>
   53 
   54 #include <compat/freebsd32/freebsd32.h>
   55 #include <compat/freebsd32/freebsd32_ioctl.h>
   56 #include <compat/freebsd32/freebsd32_misc.h>
   57 #include <compat/freebsd32/freebsd32_proto.h>
   58 
   59 CTASSERT(sizeof(struct mem_range_op32) == 12);
   60 
   61 static int
   62 freebsd32_ioctl_memrange(struct thread *td,
   63     struct freebsd32_ioctl_args *uap, struct file *fp)
   64 {
   65         struct mem_range_op mro;
   66         struct mem_range_op32 mro32;
   67         int error;
   68         u_long com;
   69 
   70         if ((error = copyin(uap->data, &mro32, sizeof(mro32))) != 0)
   71                 return (error);
   72 
   73         PTRIN_CP(mro32, mro, mo_desc);
   74         CP(mro32, mro, mo_arg[0]);
   75         CP(mro32, mro, mo_arg[1]);
   76 
   77         com = 0;
   78         switch (uap->com) {
   79         case MEMRANGE_GET32:
   80                 com = MEMRANGE_GET;
   81                 break;
   82 
   83         case MEMRANGE_SET32:
   84                 com = MEMRANGE_SET;
   85                 break;
   86 
   87         default:
   88                 panic("%s: unknown MEMRANGE %#x", __func__, uap->com);
   89         }
   90 
   91         if ((error = fo_ioctl(fp, com, (caddr_t)&mro, td->td_ucred, td)) != 0)
   92                 return (error);
   93 
   94         if ( (com & IOC_OUT) ) {
   95                 CP(mro, mro32, mo_arg[0]);
   96                 CP(mro, mro32, mo_arg[1]);
   97 
   98                 error = copyout(&mro32, uap->data, sizeof(mro32));
   99         }
  100 
  101         return (error);
  102 }
  103 
  104 static int
  105 freebsd32_ioctl_barmmap(struct thread *td,
  106     struct freebsd32_ioctl_args *uap, struct file *fp)
  107 {
  108         struct pci_bar_mmap32 pbm32;
  109         struct pci_bar_mmap pbm;
  110         int error;
  111 
  112         error = copyin(uap->data, &pbm32, sizeof(pbm32));
  113         if (error != 0)
  114                 return (error);
  115         PTRIN_CP(pbm32, pbm, pbm_map_base);
  116         CP(pbm32, pbm, pbm_sel);
  117         CP(pbm32, pbm, pbm_reg);
  118         CP(pbm32, pbm, pbm_flags);
  119         CP(pbm32, pbm, pbm_memattr);
  120         pbm.pbm_bar_length = PAIR32TO64(uint64_t, pbm32.pbm_bar_length);
  121         error = fo_ioctl(fp, PCIOCBARMMAP, (caddr_t)&pbm, td->td_ucred, td);
  122         if (error == 0) {
  123                 PTROUT_CP(pbm, pbm32, pbm_map_base);
  124                 CP(pbm, pbm32, pbm_map_length);
  125 #if BYTE_ORDER == LITTLE_ENDIAN
  126                 pbm32.pbm_bar_length1 = pbm.pbm_bar_length;
  127                 pbm32.pbm_bar_length2 = pbm.pbm_bar_length >> 32;
  128 #else
  129                 pbm32.pbm_bar_length1 = pbm.pbm_bar_length >> 32;
  130                 pbm32.pbm_bar_length2 = pbm.pbm_bar_length;
  131 #endif
  132                 CP(pbm, pbm32, pbm_bar_off);
  133                 error = copyout(&pbm32, uap->data, sizeof(pbm32));
  134         }
  135         return (error);
  136 }
  137 
  138 static int
  139 freebsd32_ioctl_sg(struct thread *td,
  140     struct freebsd32_ioctl_args *uap, struct file *fp)
  141 {
  142         struct sg_io_hdr io;
  143         struct sg_io_hdr32 io32;
  144         int error;
  145 
  146         if ((error = copyin(uap->data, &io32, sizeof(io32))) != 0)
  147                 return (error);
  148 
  149         CP(io32, io, interface_id);
  150         CP(io32, io, dxfer_direction);
  151         CP(io32, io, cmd_len);
  152         CP(io32, io, mx_sb_len);
  153         CP(io32, io, iovec_count);
  154         CP(io32, io, dxfer_len);
  155         PTRIN_CP(io32, io, dxferp);
  156         PTRIN_CP(io32, io, cmdp);
  157         PTRIN_CP(io32, io, sbp);
  158         CP(io32, io, timeout);
  159         CP(io32, io, flags);
  160         CP(io32, io, pack_id);
  161         PTRIN_CP(io32, io, usr_ptr);
  162         CP(io32, io, status);
  163         CP(io32, io, masked_status);
  164         CP(io32, io, msg_status);
  165         CP(io32, io, sb_len_wr);
  166         CP(io32, io, host_status);
  167         CP(io32, io, driver_status);
  168         CP(io32, io, resid);
  169         CP(io32, io, duration);
  170         CP(io32, io, info);
  171 
  172         if ((error = fo_ioctl(fp, SG_IO, (caddr_t)&io, td->td_ucred, td)) != 0)
  173                 return (error);
  174 
  175         CP(io, io32, interface_id);
  176         CP(io, io32, dxfer_direction);
  177         CP(io, io32, cmd_len);
  178         CP(io, io32, mx_sb_len);
  179         CP(io, io32, iovec_count);
  180         CP(io, io32, dxfer_len);
  181         PTROUT_CP(io, io32, dxferp);
  182         PTROUT_CP(io, io32, cmdp);
  183         PTROUT_CP(io, io32, sbp);
  184         CP(io, io32, timeout);
  185         CP(io, io32, flags);
  186         CP(io, io32, pack_id);
  187         PTROUT_CP(io, io32, usr_ptr);
  188         CP(io, io32, status);
  189         CP(io, io32, masked_status);
  190         CP(io, io32, msg_status);
  191         CP(io, io32, sb_len_wr);
  192         CP(io, io32, host_status);
  193         CP(io, io32, driver_status);
  194         CP(io, io32, resid);
  195         CP(io, io32, duration);
  196         CP(io, io32, info);
  197 
  198         error = copyout(&io32, uap->data, sizeof(io32));
  199 
  200         return (error);
  201 }
  202 
  203 int
  204 freebsd32_ioctl(struct thread *td, struct freebsd32_ioctl_args *uap)
  205 {
  206         struct ioctl_args ap /*{
  207                 int     fd;
  208                 u_long  com;
  209                 caddr_t data;
  210         }*/ ;
  211         struct file *fp;
  212         cap_rights_t rights;
  213         int error;
  214 
  215         error = fget(td, uap->fd, cap_rights_init_one(&rights, CAP_IOCTL), &fp);
  216         if (error != 0)
  217                 return (error);
  218         if ((fp->f_flag & (FREAD | FWRITE)) == 0) {
  219                 fdrop(fp, td);
  220                 return (EBADF);
  221         }
  222 
  223         switch (uap->com) {
  224         case MEMRANGE_GET32:    /* FALLTHROUGH */
  225         case MEMRANGE_SET32:
  226                 error = freebsd32_ioctl_memrange(td, uap, fp);
  227                 break;
  228 
  229         case SG_IO_32:
  230                 error = freebsd32_ioctl_sg(td, uap, fp);
  231                 break;
  232 
  233         case PCIOCBARMMAP_32:
  234                 error = freebsd32_ioctl_barmmap(td, uap, fp);
  235                 break;
  236 
  237         default:
  238                 fdrop(fp, td);
  239                 ap.fd = uap->fd;
  240                 ap.com = uap->com;
  241                 PTRIN_CP(*uap, ap, data);
  242                 return sys_ioctl(td, &ap);
  243         }
  244 
  245         fdrop(fp, td);
  246         return (error);
  247 }

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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