The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/compat/linux/linux_ioctl.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 1994-1995 Søren Schmidt
    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  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include "opt_compat.h"
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD: stable/12/sys/compat/linux/linux_ioctl.c 343343 2019-01-23 14:19:40Z emaste $");
   33 
   34 #include <sys/param.h>
   35 #include <sys/systm.h>
   36 #include <sys/sysproto.h>
   37 #include <sys/capsicum.h>
   38 #include <sys/cdio.h>
   39 #include <sys/dvdio.h>
   40 #include <sys/conf.h>
   41 #include <sys/disk.h>
   42 #include <sys/consio.h>
   43 #include <sys/ctype.h>
   44 #include <sys/fcntl.h>
   45 #include <sys/file.h>
   46 #include <sys/filedesc.h>
   47 #include <sys/filio.h>
   48 #include <sys/jail.h>
   49 #include <sys/kbio.h>
   50 #include <sys/kernel.h>
   51 #include <sys/linker_set.h>
   52 #include <sys/lock.h>
   53 #include <sys/malloc.h>
   54 #include <sys/proc.h>
   55 #include <sys/sbuf.h>
   56 #include <sys/socket.h>
   57 #include <sys/sockio.h>
   58 #include <sys/soundcard.h>
   59 #include <sys/stdint.h>
   60 #include <sys/sx.h>
   61 #include <sys/sysctl.h>
   62 #include <sys/tty.h>
   63 #include <sys/uio.h>
   64 #include <sys/types.h>
   65 #include <sys/mman.h>
   66 #include <sys/resourcevar.h>
   67 
   68 #include <net/if.h>
   69 #include <net/if_var.h>
   70 #include <net/if_dl.h>
   71 #include <net/if_types.h>
   72 
   73 #include <dev/evdev/input.h>
   74 #include <dev/usb/usb_ioctl.h>
   75 
   76 #ifdef COMPAT_LINUX32
   77 #include <machine/../linux32/linux.h>
   78 #include <machine/../linux32/linux32_proto.h>
   79 #else
   80 #include <machine/../linux/linux.h>
   81 #include <machine/../linux/linux_proto.h>
   82 #endif
   83 
   84 #include <compat/linux/linux_ioctl.h>
   85 #include <compat/linux/linux_mib.h>
   86 #include <compat/linux/linux_socket.h>
   87 #include <compat/linux/linux_timer.h>
   88 #include <compat/linux/linux_util.h>
   89 
   90 #include <contrib/v4l/videodev.h>
   91 #include <compat/linux/linux_videodev_compat.h>
   92 
   93 #include <contrib/v4l/videodev2.h>
   94 #include <compat/linux/linux_videodev2_compat.h>
   95 
   96 #include <cam/scsi/scsi_sg.h>
   97 
   98 CTASSERT(LINUX_IFNAMSIZ == IFNAMSIZ);
   99 
  100 static linux_ioctl_function_t linux_ioctl_cdrom;
  101 static linux_ioctl_function_t linux_ioctl_vfat;
  102 static linux_ioctl_function_t linux_ioctl_console;
  103 static linux_ioctl_function_t linux_ioctl_hdio;
  104 static linux_ioctl_function_t linux_ioctl_disk;
  105 static linux_ioctl_function_t linux_ioctl_socket;
  106 static linux_ioctl_function_t linux_ioctl_sound;
  107 static linux_ioctl_function_t linux_ioctl_termio;
  108 static linux_ioctl_function_t linux_ioctl_private;
  109 static linux_ioctl_function_t linux_ioctl_drm;
  110 static linux_ioctl_function_t linux_ioctl_sg;
  111 static linux_ioctl_function_t linux_ioctl_v4l;
  112 static linux_ioctl_function_t linux_ioctl_v4l2;
  113 static linux_ioctl_function_t linux_ioctl_special;
  114 static linux_ioctl_function_t linux_ioctl_fbsd_usb;
  115 static linux_ioctl_function_t linux_ioctl_evdev;
  116 
  117 static struct linux_ioctl_handler cdrom_handler =
  118 { linux_ioctl_cdrom, LINUX_IOCTL_CDROM_MIN, LINUX_IOCTL_CDROM_MAX };
  119 static struct linux_ioctl_handler vfat_handler =
  120 { linux_ioctl_vfat, LINUX_IOCTL_VFAT_MIN, LINUX_IOCTL_VFAT_MAX };
  121 static struct linux_ioctl_handler console_handler =
  122 { linux_ioctl_console, LINUX_IOCTL_CONSOLE_MIN, LINUX_IOCTL_CONSOLE_MAX };
  123 static struct linux_ioctl_handler hdio_handler =
  124 { linux_ioctl_hdio, LINUX_IOCTL_HDIO_MIN, LINUX_IOCTL_HDIO_MAX };
  125 static struct linux_ioctl_handler disk_handler =
  126 { linux_ioctl_disk, LINUX_IOCTL_DISK_MIN, LINUX_IOCTL_DISK_MAX };
  127 static struct linux_ioctl_handler socket_handler =
  128 { linux_ioctl_socket, LINUX_IOCTL_SOCKET_MIN, LINUX_IOCTL_SOCKET_MAX };
  129 static struct linux_ioctl_handler sound_handler =
  130 { linux_ioctl_sound, LINUX_IOCTL_SOUND_MIN, LINUX_IOCTL_SOUND_MAX };
  131 static struct linux_ioctl_handler termio_handler =
  132 { linux_ioctl_termio, LINUX_IOCTL_TERMIO_MIN, LINUX_IOCTL_TERMIO_MAX };
  133 static struct linux_ioctl_handler private_handler =
  134 { linux_ioctl_private, LINUX_IOCTL_PRIVATE_MIN, LINUX_IOCTL_PRIVATE_MAX };
  135 static struct linux_ioctl_handler drm_handler =
  136 { linux_ioctl_drm, LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX };
  137 static struct linux_ioctl_handler sg_handler =
  138 { linux_ioctl_sg, LINUX_IOCTL_SG_MIN, LINUX_IOCTL_SG_MAX };
  139 static struct linux_ioctl_handler video_handler =
  140 { linux_ioctl_v4l, LINUX_IOCTL_VIDEO_MIN, LINUX_IOCTL_VIDEO_MAX };
  141 static struct linux_ioctl_handler video2_handler =
  142 { linux_ioctl_v4l2, LINUX_IOCTL_VIDEO2_MIN, LINUX_IOCTL_VIDEO2_MAX };
  143 static struct linux_ioctl_handler fbsd_usb =
  144 { linux_ioctl_fbsd_usb, FBSD_LUSB_MIN, FBSD_LUSB_MAX };
  145 static struct linux_ioctl_handler evdev_handler =
  146 { linux_ioctl_evdev, LINUX_IOCTL_EVDEV_MIN, LINUX_IOCTL_EVDEV_MAX };
  147 
  148 DATA_SET(linux_ioctl_handler_set, cdrom_handler);
  149 DATA_SET(linux_ioctl_handler_set, vfat_handler);
  150 DATA_SET(linux_ioctl_handler_set, console_handler);
  151 DATA_SET(linux_ioctl_handler_set, hdio_handler);
  152 DATA_SET(linux_ioctl_handler_set, disk_handler);
  153 DATA_SET(linux_ioctl_handler_set, socket_handler);
  154 DATA_SET(linux_ioctl_handler_set, sound_handler);
  155 DATA_SET(linux_ioctl_handler_set, termio_handler);
  156 DATA_SET(linux_ioctl_handler_set, private_handler);
  157 DATA_SET(linux_ioctl_handler_set, drm_handler);
  158 DATA_SET(linux_ioctl_handler_set, sg_handler);
  159 DATA_SET(linux_ioctl_handler_set, video_handler);
  160 DATA_SET(linux_ioctl_handler_set, video2_handler);
  161 DATA_SET(linux_ioctl_handler_set, fbsd_usb);
  162 DATA_SET(linux_ioctl_handler_set, evdev_handler);
  163 
  164 #ifdef __i386__
  165 static TAILQ_HEAD(, linux_ioctl_handler_element) linux_ioctl_handlers =
  166     TAILQ_HEAD_INITIALIZER(linux_ioctl_handlers);
  167 static struct sx linux_ioctl_sx;
  168 SX_SYSINIT(linux_ioctl, &linux_ioctl_sx, "Linux ioctl handlers");
  169 #else
  170 extern TAILQ_HEAD(, linux_ioctl_handler_element) linux_ioctl_handlers;
  171 extern struct sx linux_ioctl_sx;
  172 #endif
  173 #ifdef COMPAT_LINUX32
  174 static TAILQ_HEAD(, linux_ioctl_handler_element) linux32_ioctl_handlers =
  175     TAILQ_HEAD_INITIALIZER(linux32_ioctl_handlers);
  176 #endif
  177 
  178 /*
  179  * hdio related ioctls for VMWare support
  180  */
  181 
  182 struct linux_hd_geometry {
  183         u_int8_t        heads;
  184         u_int8_t        sectors;
  185         u_int16_t       cylinders;
  186         u_int32_t       start;
  187 };
  188 
  189 struct linux_hd_big_geometry {
  190         u_int8_t        heads;
  191         u_int8_t        sectors;
  192         u_int32_t       cylinders;
  193         u_int32_t       start;
  194 };
  195 
  196 static int
  197 linux_ioctl_hdio(struct thread *td, struct linux_ioctl_args *args)
  198 {
  199         struct file *fp;
  200         int error;
  201         u_int sectorsize, fwcylinders, fwheads, fwsectors;
  202         off_t mediasize, bytespercyl;
  203 
  204         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
  205         if (error != 0)
  206                 return (error);
  207         switch (args->cmd & 0xffff) {
  208         case LINUX_HDIO_GET_GEO:
  209         case LINUX_HDIO_GET_GEO_BIG:
  210                 error = fo_ioctl(fp, DIOCGMEDIASIZE,
  211                         (caddr_t)&mediasize, td->td_ucred, td);
  212                 if (!error)
  213                         error = fo_ioctl(fp, DIOCGSECTORSIZE,
  214                                 (caddr_t)&sectorsize, td->td_ucred, td);
  215                 if (!error)
  216                         error = fo_ioctl(fp, DIOCGFWHEADS,
  217                                 (caddr_t)&fwheads, td->td_ucred, td);
  218                 if (!error)
  219                         error = fo_ioctl(fp, DIOCGFWSECTORS,
  220                                 (caddr_t)&fwsectors, td->td_ucred, td);
  221                 /*
  222                  * XXX: DIOCGFIRSTOFFSET is not yet implemented, so
  223                  * so pretend that GEOM always says 0. This is NOT VALID
  224                  * for slices or partitions, only the per-disk raw devices.
  225                  */
  226 
  227                 fdrop(fp, td);
  228                 if (error)
  229                         return (error);
  230                 /*
  231                  * 1. Calculate the number of bytes in a cylinder,
  232                  *    given the firmware's notion of heads and sectors
  233                  *    per cylinder.
  234                  * 2. Calculate the number of cylinders, given the total
  235                  *    size of the media.
  236                  * All internal calculations should have 64-bit precision.
  237                  */
  238                 bytespercyl = (off_t) sectorsize * fwheads * fwsectors;
  239                 fwcylinders = mediasize / bytespercyl;
  240 #if defined(DEBUG)
  241                 linux_msg(td, "HDIO_GET_GEO: mediasize %jd, c/h/s %d/%d/%d, "
  242                           "bpc %jd",
  243                           (intmax_t)mediasize, fwcylinders, fwheads, fwsectors,
  244                           (intmax_t)bytespercyl);
  245 #endif
  246                 if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO) {
  247                         struct linux_hd_geometry hdg;
  248 
  249                         hdg.cylinders = fwcylinders;
  250                         hdg.heads = fwheads;
  251                         hdg.sectors = fwsectors;
  252                         hdg.start = 0;
  253                         error = copyout(&hdg, (void *)args->arg, sizeof(hdg));
  254                 } else if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO_BIG) {
  255                         struct linux_hd_big_geometry hdbg;
  256 
  257                         memset(&hdbg, 0, sizeof(hdbg));
  258                         hdbg.cylinders = fwcylinders;
  259                         hdbg.heads = fwheads;
  260                         hdbg.sectors = fwsectors;
  261                         hdbg.start = 0;
  262                         error = copyout(&hdbg, (void *)args->arg, sizeof(hdbg));
  263                 }
  264                 return (error);
  265                 break;
  266         default:
  267                 /* XXX */
  268                 linux_msg(td,
  269                         "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
  270                         args->fd, (int)(args->cmd & 0xffff),
  271                         (int)(args->cmd & 0xff00) >> 8,
  272                         (int)(args->cmd & 0xff));
  273                 break;
  274         }
  275         fdrop(fp, td);
  276         return (ENOIOCTL);
  277 }
  278 
  279 static int
  280 linux_ioctl_disk(struct thread *td, struct linux_ioctl_args *args)
  281 {
  282         struct file *fp;
  283         int error;
  284         u_int sectorsize;
  285         off_t mediasize;
  286 
  287         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
  288         if (error != 0)
  289                 return (error);
  290         switch (args->cmd & 0xffff) {
  291         case LINUX_BLKGETSIZE:
  292                 error = fo_ioctl(fp, DIOCGSECTORSIZE,
  293                     (caddr_t)&sectorsize, td->td_ucred, td);
  294                 if (!error)
  295                         error = fo_ioctl(fp, DIOCGMEDIASIZE,
  296                             (caddr_t)&mediasize, td->td_ucred, td);
  297                 fdrop(fp, td);
  298                 if (error)
  299                         return (error);
  300                 sectorsize = mediasize / sectorsize;
  301                 /*
  302                  * XXX: How do we know we return the right size of integer ?
  303                  */
  304                 return (copyout(&sectorsize, (void *)args->arg,
  305                     sizeof(sectorsize)));
  306                 break;
  307         case LINUX_BLKSSZGET:
  308                 error = fo_ioctl(fp, DIOCGSECTORSIZE,
  309                     (caddr_t)&sectorsize, td->td_ucred, td);
  310                 fdrop(fp, td);
  311                 if (error)
  312                         return (error);
  313                 return (copyout(&sectorsize, (void *)args->arg,
  314                     sizeof(sectorsize)));
  315                 break;
  316         }
  317         fdrop(fp, td);
  318         return (ENOIOCTL);
  319 }
  320 
  321 /*
  322  * termio related ioctls
  323  */
  324 
  325 struct linux_termio {
  326         unsigned short c_iflag;
  327         unsigned short c_oflag;
  328         unsigned short c_cflag;
  329         unsigned short c_lflag;
  330         unsigned char c_line;
  331         unsigned char c_cc[LINUX_NCC];
  332 };
  333 
  334 struct linux_termios {
  335         unsigned int c_iflag;
  336         unsigned int c_oflag;
  337         unsigned int c_cflag;
  338         unsigned int c_lflag;
  339         unsigned char c_line;
  340         unsigned char c_cc[LINUX_NCCS];
  341 };
  342 
  343 struct linux_winsize {
  344         unsigned short ws_row, ws_col;
  345         unsigned short ws_xpixel, ws_ypixel;
  346 };
  347 
  348 struct speedtab {
  349         int sp_speed;                   /* Speed. */
  350         int sp_code;                    /* Code. */
  351 };
  352 
  353 static struct speedtab sptab[] = {
  354         { B0, LINUX_B0 }, { B50, LINUX_B50 },
  355         { B75, LINUX_B75 }, { B110, LINUX_B110 },
  356         { B134, LINUX_B134 }, { B150, LINUX_B150 },
  357         { B200, LINUX_B200 }, { B300, LINUX_B300 },
  358         { B600, LINUX_B600 }, { B1200, LINUX_B1200 },
  359         { B1800, LINUX_B1800 }, { B2400, LINUX_B2400 },
  360         { B4800, LINUX_B4800 }, { B9600, LINUX_B9600 },
  361         { B19200, LINUX_B19200 }, { B38400, LINUX_B38400 },
  362         { B57600, LINUX_B57600 }, { B115200, LINUX_B115200 },
  363         {-1, -1 }
  364 };
  365 
  366 struct linux_serial_struct {
  367         int     type;
  368         int     line;
  369         int     port;
  370         int     irq;
  371         int     flags;
  372         int     xmit_fifo_size;
  373         int     custom_divisor;
  374         int     baud_base;
  375         unsigned short close_delay;
  376         char    reserved_char[2];
  377         int     hub6;
  378         unsigned short closing_wait;
  379         unsigned short closing_wait2;
  380         int     reserved[4];
  381 };
  382 
  383 static int
  384 linux_to_bsd_speed(int code, struct speedtab *table)
  385 {
  386         for ( ; table->sp_code != -1; table++)
  387                 if (table->sp_code == code)
  388                         return (table->sp_speed);
  389         return (-1);
  390 }
  391 
  392 static int
  393 bsd_to_linux_speed(int speed, struct speedtab *table)
  394 {
  395         for ( ; table->sp_speed != -1; table++)
  396                 if (table->sp_speed == speed)
  397                         return (table->sp_code);
  398         return (-1);
  399 }
  400 
  401 static void
  402 bsd_to_linux_termios(struct termios *bios, struct linux_termios *lios)
  403 {
  404         int i;
  405 
  406 #ifdef DEBUG
  407         if (ldebug(ioctl)) {
  408                 printf("LINUX: BSD termios structure (input):\n");
  409                 printf("i=%08x o=%08x c=%08x l=%08x ispeed=%d ospeed=%d\n",
  410                     bios->c_iflag, bios->c_oflag, bios->c_cflag, bios->c_lflag,
  411                     bios->c_ispeed, bios->c_ospeed);
  412                 printf("c_cc ");
  413                 for (i=0; i<NCCS; i++)
  414                         printf("%02x ", bios->c_cc[i]);
  415                 printf("\n");
  416         }
  417 #endif
  418 
  419         lios->c_iflag = 0;
  420         if (bios->c_iflag & IGNBRK)
  421                 lios->c_iflag |= LINUX_IGNBRK;
  422         if (bios->c_iflag & BRKINT)
  423                 lios->c_iflag |= LINUX_BRKINT;
  424         if (bios->c_iflag & IGNPAR)
  425                 lios->c_iflag |= LINUX_IGNPAR;
  426         if (bios->c_iflag & PARMRK)
  427                 lios->c_iflag |= LINUX_PARMRK;
  428         if (bios->c_iflag & INPCK)
  429                 lios->c_iflag |= LINUX_INPCK;
  430         if (bios->c_iflag & ISTRIP)
  431                 lios->c_iflag |= LINUX_ISTRIP;
  432         if (bios->c_iflag & INLCR)
  433                 lios->c_iflag |= LINUX_INLCR;
  434         if (bios->c_iflag & IGNCR)
  435                 lios->c_iflag |= LINUX_IGNCR;
  436         if (bios->c_iflag & ICRNL)
  437                 lios->c_iflag |= LINUX_ICRNL;
  438         if (bios->c_iflag & IXON)
  439                 lios->c_iflag |= LINUX_IXON;
  440         if (bios->c_iflag & IXANY)
  441                 lios->c_iflag |= LINUX_IXANY;
  442         if (bios->c_iflag & IXOFF)
  443                 lios->c_iflag |= LINUX_IXOFF;
  444         if (bios->c_iflag & IMAXBEL)
  445                 lios->c_iflag |= LINUX_IMAXBEL;
  446 
  447         lios->c_oflag = 0;
  448         if (bios->c_oflag & OPOST)
  449                 lios->c_oflag |= LINUX_OPOST;
  450         if (bios->c_oflag & ONLCR)
  451                 lios->c_oflag |= LINUX_ONLCR;
  452         if (bios->c_oflag & TAB3)
  453                 lios->c_oflag |= LINUX_XTABS;
  454 
  455         lios->c_cflag = bsd_to_linux_speed(bios->c_ispeed, sptab);
  456         lios->c_cflag |= (bios->c_cflag & CSIZE) >> 4;
  457         if (bios->c_cflag & CSTOPB)
  458                 lios->c_cflag |= LINUX_CSTOPB;
  459         if (bios->c_cflag & CREAD)
  460                 lios->c_cflag |= LINUX_CREAD;
  461         if (bios->c_cflag & PARENB)
  462                 lios->c_cflag |= LINUX_PARENB;
  463         if (bios->c_cflag & PARODD)
  464                 lios->c_cflag |= LINUX_PARODD;
  465         if (bios->c_cflag & HUPCL)
  466                 lios->c_cflag |= LINUX_HUPCL;
  467         if (bios->c_cflag & CLOCAL)
  468                 lios->c_cflag |= LINUX_CLOCAL;
  469         if (bios->c_cflag & CRTSCTS)
  470                 lios->c_cflag |= LINUX_CRTSCTS;
  471 
  472         lios->c_lflag = 0;
  473         if (bios->c_lflag & ISIG)
  474                 lios->c_lflag |= LINUX_ISIG;
  475         if (bios->c_lflag & ICANON)
  476                 lios->c_lflag |= LINUX_ICANON;
  477         if (bios->c_lflag & ECHO)
  478                 lios->c_lflag |= LINUX_ECHO;
  479         if (bios->c_lflag & ECHOE)
  480                 lios->c_lflag |= LINUX_ECHOE;
  481         if (bios->c_lflag & ECHOK)
  482                 lios->c_lflag |= LINUX_ECHOK;
  483         if (bios->c_lflag & ECHONL)
  484                 lios->c_lflag |= LINUX_ECHONL;
  485         if (bios->c_lflag & NOFLSH)
  486                 lios->c_lflag |= LINUX_NOFLSH;
  487         if (bios->c_lflag & TOSTOP)
  488                 lios->c_lflag |= LINUX_TOSTOP;
  489         if (bios->c_lflag & ECHOCTL)
  490                 lios->c_lflag |= LINUX_ECHOCTL;
  491         if (bios->c_lflag & ECHOPRT)
  492                 lios->c_lflag |= LINUX_ECHOPRT;
  493         if (bios->c_lflag & ECHOKE)
  494                 lios->c_lflag |= LINUX_ECHOKE;
  495         if (bios->c_lflag & FLUSHO)
  496                 lios->c_lflag |= LINUX_FLUSHO;
  497         if (bios->c_lflag & PENDIN)
  498                 lios->c_lflag |= LINUX_PENDIN;
  499         if (bios->c_lflag & IEXTEN)
  500                 lios->c_lflag |= LINUX_IEXTEN;
  501 
  502         for (i=0; i<LINUX_NCCS; i++)
  503                 lios->c_cc[i] = LINUX_POSIX_VDISABLE;
  504         lios->c_cc[LINUX_VINTR] = bios->c_cc[VINTR];
  505         lios->c_cc[LINUX_VQUIT] = bios->c_cc[VQUIT];
  506         lios->c_cc[LINUX_VERASE] = bios->c_cc[VERASE];
  507         lios->c_cc[LINUX_VKILL] = bios->c_cc[VKILL];
  508         lios->c_cc[LINUX_VEOF] = bios->c_cc[VEOF];
  509         lios->c_cc[LINUX_VEOL] = bios->c_cc[VEOL];
  510         lios->c_cc[LINUX_VMIN] = bios->c_cc[VMIN];
  511         lios->c_cc[LINUX_VTIME] = bios->c_cc[VTIME];
  512         lios->c_cc[LINUX_VEOL2] = bios->c_cc[VEOL2];
  513         lios->c_cc[LINUX_VSUSP] = bios->c_cc[VSUSP];
  514         lios->c_cc[LINUX_VSTART] = bios->c_cc[VSTART];
  515         lios->c_cc[LINUX_VSTOP] = bios->c_cc[VSTOP];
  516         lios->c_cc[LINUX_VREPRINT] = bios->c_cc[VREPRINT];
  517         lios->c_cc[LINUX_VDISCARD] = bios->c_cc[VDISCARD];
  518         lios->c_cc[LINUX_VWERASE] = bios->c_cc[VWERASE];
  519         lios->c_cc[LINUX_VLNEXT] = bios->c_cc[VLNEXT];
  520 
  521         for (i=0; i<LINUX_NCCS; i++) {
  522                 if (i != LINUX_VMIN && i != LINUX_VTIME &&
  523                     lios->c_cc[i] == _POSIX_VDISABLE)
  524                         lios->c_cc[i] = LINUX_POSIX_VDISABLE;
  525         }
  526         lios->c_line = 0;
  527 
  528 #ifdef DEBUG
  529         if (ldebug(ioctl)) {
  530                 printf("LINUX: LINUX termios structure (output):\n");
  531                 printf("i=%08x o=%08x c=%08x l=%08x line=%d\n",
  532                     lios->c_iflag, lios->c_oflag, lios->c_cflag,
  533                     lios->c_lflag, (int)lios->c_line);
  534                 printf("c_cc ");
  535                 for (i=0; i<LINUX_NCCS; i++)
  536                         printf("%02x ", lios->c_cc[i]);
  537                 printf("\n");
  538         }
  539 #endif
  540 }
  541 
  542 static void
  543 linux_to_bsd_termios(struct linux_termios *lios, struct termios *bios)
  544 {
  545         int i;
  546 
  547 #ifdef DEBUG
  548         if (ldebug(ioctl)) {
  549                 printf("LINUX: LINUX termios structure (input):\n");
  550                 printf("i=%08x o=%08x c=%08x l=%08x line=%d\n",
  551                     lios->c_iflag, lios->c_oflag, lios->c_cflag,
  552                     lios->c_lflag, (int)lios->c_line);
  553                 printf("c_cc ");
  554                 for (i=0; i<LINUX_NCCS; i++)
  555                         printf("%02x ", lios->c_cc[i]);
  556                 printf("\n");
  557         }
  558 #endif
  559 
  560         bios->c_iflag = 0;
  561         if (lios->c_iflag & LINUX_IGNBRK)
  562                 bios->c_iflag |= IGNBRK;
  563         if (lios->c_iflag & LINUX_BRKINT)
  564                 bios->c_iflag |= BRKINT;
  565         if (lios->c_iflag & LINUX_IGNPAR)
  566                 bios->c_iflag |= IGNPAR;
  567         if (lios->c_iflag & LINUX_PARMRK)
  568                 bios->c_iflag |= PARMRK;
  569         if (lios->c_iflag & LINUX_INPCK)
  570                 bios->c_iflag |= INPCK;
  571         if (lios->c_iflag & LINUX_ISTRIP)
  572                 bios->c_iflag |= ISTRIP;
  573         if (lios->c_iflag & LINUX_INLCR)
  574                 bios->c_iflag |= INLCR;
  575         if (lios->c_iflag & LINUX_IGNCR)
  576                 bios->c_iflag |= IGNCR;
  577         if (lios->c_iflag & LINUX_ICRNL)
  578                 bios->c_iflag |= ICRNL;
  579         if (lios->c_iflag & LINUX_IXON)
  580                 bios->c_iflag |= IXON;
  581         if (lios->c_iflag & LINUX_IXANY)
  582                 bios->c_iflag |= IXANY;
  583         if (lios->c_iflag & LINUX_IXOFF)
  584                 bios->c_iflag |= IXOFF;
  585         if (lios->c_iflag & LINUX_IMAXBEL)
  586                 bios->c_iflag |= IMAXBEL;
  587 
  588         bios->c_oflag = 0;
  589         if (lios->c_oflag & LINUX_OPOST)
  590                 bios->c_oflag |= OPOST;
  591         if (lios->c_oflag & LINUX_ONLCR)
  592                 bios->c_oflag |= ONLCR;
  593         if (lios->c_oflag & LINUX_XTABS)
  594                 bios->c_oflag |= TAB3;
  595 
  596         bios->c_cflag = (lios->c_cflag & LINUX_CSIZE) << 4;
  597         if (lios->c_cflag & LINUX_CSTOPB)
  598                 bios->c_cflag |= CSTOPB;
  599         if (lios->c_cflag & LINUX_CREAD)
  600                 bios->c_cflag |= CREAD;
  601         if (lios->c_cflag & LINUX_PARENB)
  602                 bios->c_cflag |= PARENB;
  603         if (lios->c_cflag & LINUX_PARODD)
  604                 bios->c_cflag |= PARODD;
  605         if (lios->c_cflag & LINUX_HUPCL)
  606                 bios->c_cflag |= HUPCL;
  607         if (lios->c_cflag & LINUX_CLOCAL)
  608                 bios->c_cflag |= CLOCAL;
  609         if (lios->c_cflag & LINUX_CRTSCTS)
  610                 bios->c_cflag |= CRTSCTS;
  611 
  612         bios->c_lflag = 0;
  613         if (lios->c_lflag & LINUX_ISIG)
  614                 bios->c_lflag |= ISIG;
  615         if (lios->c_lflag & LINUX_ICANON)
  616                 bios->c_lflag |= ICANON;
  617         if (lios->c_lflag & LINUX_ECHO)
  618                 bios->c_lflag |= ECHO;
  619         if (lios->c_lflag & LINUX_ECHOE)
  620                 bios->c_lflag |= ECHOE;
  621         if (lios->c_lflag & LINUX_ECHOK)
  622                 bios->c_lflag |= ECHOK;
  623         if (lios->c_lflag & LINUX_ECHONL)
  624                 bios->c_lflag |= ECHONL;
  625         if (lios->c_lflag & LINUX_NOFLSH)
  626                 bios->c_lflag |= NOFLSH;
  627         if (lios->c_lflag & LINUX_TOSTOP)
  628                 bios->c_lflag |= TOSTOP;
  629         if (lios->c_lflag & LINUX_ECHOCTL)
  630                 bios->c_lflag |= ECHOCTL;
  631         if (lios->c_lflag & LINUX_ECHOPRT)
  632                 bios->c_lflag |= ECHOPRT;
  633         if (lios->c_lflag & LINUX_ECHOKE)
  634                 bios->c_lflag |= ECHOKE;
  635         if (lios->c_lflag & LINUX_FLUSHO)
  636                 bios->c_lflag |= FLUSHO;
  637         if (lios->c_lflag & LINUX_PENDIN)
  638                 bios->c_lflag |= PENDIN;
  639         if (lios->c_lflag & LINUX_IEXTEN)
  640                 bios->c_lflag |= IEXTEN;
  641 
  642         for (i=0; i<NCCS; i++)
  643                 bios->c_cc[i] = _POSIX_VDISABLE;
  644         bios->c_cc[VINTR] = lios->c_cc[LINUX_VINTR];
  645         bios->c_cc[VQUIT] = lios->c_cc[LINUX_VQUIT];
  646         bios->c_cc[VERASE] = lios->c_cc[LINUX_VERASE];
  647         bios->c_cc[VKILL] = lios->c_cc[LINUX_VKILL];
  648         bios->c_cc[VEOF] = lios->c_cc[LINUX_VEOF];
  649         bios->c_cc[VEOL] = lios->c_cc[LINUX_VEOL];
  650         bios->c_cc[VMIN] = lios->c_cc[LINUX_VMIN];
  651         bios->c_cc[VTIME] = lios->c_cc[LINUX_VTIME];
  652         bios->c_cc[VEOL2] = lios->c_cc[LINUX_VEOL2];
  653         bios->c_cc[VSUSP] = lios->c_cc[LINUX_VSUSP];
  654         bios->c_cc[VSTART] = lios->c_cc[LINUX_VSTART];
  655         bios->c_cc[VSTOP] = lios->c_cc[LINUX_VSTOP];
  656         bios->c_cc[VREPRINT] = lios->c_cc[LINUX_VREPRINT];
  657         bios->c_cc[VDISCARD] = lios->c_cc[LINUX_VDISCARD];
  658         bios->c_cc[VWERASE] = lios->c_cc[LINUX_VWERASE];
  659         bios->c_cc[VLNEXT] = lios->c_cc[LINUX_VLNEXT];
  660 
  661         for (i=0; i<NCCS; i++) {
  662                 if (i != VMIN && i != VTIME &&
  663                     bios->c_cc[i] == LINUX_POSIX_VDISABLE)
  664                         bios->c_cc[i] = _POSIX_VDISABLE;
  665         }
  666 
  667         bios->c_ispeed = bios->c_ospeed =
  668             linux_to_bsd_speed(lios->c_cflag & LINUX_CBAUD, sptab);
  669 
  670 #ifdef DEBUG
  671         if (ldebug(ioctl)) {
  672                 printf("LINUX: BSD termios structure (output):\n");
  673                 printf("i=%08x o=%08x c=%08x l=%08x ispeed=%d ospeed=%d\n",
  674                     bios->c_iflag, bios->c_oflag, bios->c_cflag, bios->c_lflag,
  675                     bios->c_ispeed, bios->c_ospeed);
  676                 printf("c_cc ");
  677                 for (i=0; i<NCCS; i++)
  678                         printf("%02x ", bios->c_cc[i]);
  679                 printf("\n");
  680         }
  681 #endif
  682 }
  683 
  684 static void
  685 bsd_to_linux_termio(struct termios *bios, struct linux_termio *lio)
  686 {
  687         struct linux_termios lios;
  688 
  689         memset(lio, 0, sizeof(*lio));
  690         bsd_to_linux_termios(bios, &lios);
  691         lio->c_iflag = lios.c_iflag;
  692         lio->c_oflag = lios.c_oflag;
  693         lio->c_cflag = lios.c_cflag;
  694         lio->c_lflag = lios.c_lflag;
  695         lio->c_line  = lios.c_line;
  696         memcpy(lio->c_cc, lios.c_cc, LINUX_NCC);
  697 }
  698 
  699 static void
  700 linux_to_bsd_termio(struct linux_termio *lio, struct termios *bios)
  701 {
  702         struct linux_termios lios;
  703         int i;
  704 
  705         lios.c_iflag = lio->c_iflag;
  706         lios.c_oflag = lio->c_oflag;
  707         lios.c_cflag = lio->c_cflag;
  708         lios.c_lflag = lio->c_lflag;
  709         for (i=LINUX_NCC; i<LINUX_NCCS; i++)
  710                 lios.c_cc[i] = LINUX_POSIX_VDISABLE;
  711         memcpy(lios.c_cc, lio->c_cc, LINUX_NCC);
  712         linux_to_bsd_termios(&lios, bios);
  713 }
  714 
  715 static int
  716 linux_ioctl_termio(struct thread *td, struct linux_ioctl_args *args)
  717 {
  718         struct termios bios;
  719         struct linux_termios lios;
  720         struct linux_termio lio;
  721         struct file *fp;
  722         int error;
  723 
  724         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
  725         if (error != 0)
  726                 return (error);
  727 
  728         switch (args->cmd & 0xffff) {
  729 
  730         case LINUX_TCGETS:
  731                 error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
  732                     td);
  733                 if (error)
  734                         break;
  735                 bsd_to_linux_termios(&bios, &lios);
  736                 error = copyout(&lios, (void *)args->arg, sizeof(lios));
  737                 break;
  738 
  739         case LINUX_TCSETS:
  740                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  741                 if (error)
  742                         break;
  743                 linux_to_bsd_termios(&lios, &bios);
  744                 error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
  745                     td));
  746                 break;
  747 
  748         case LINUX_TCSETSW:
  749                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  750                 if (error)
  751                         break;
  752                 linux_to_bsd_termios(&lios, &bios);
  753                 error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
  754                     td));
  755                 break;
  756 
  757         case LINUX_TCSETSF:
  758                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  759                 if (error)
  760                         break;
  761                 linux_to_bsd_termios(&lios, &bios);
  762                 error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
  763                     td));
  764                 break;
  765 
  766         case LINUX_TCGETA:
  767                 error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
  768                     td);
  769                 if (error)
  770                         break;
  771                 bsd_to_linux_termio(&bios, &lio);
  772                 error = (copyout(&lio, (void *)args->arg, sizeof(lio)));
  773                 break;
  774 
  775         case LINUX_TCSETA:
  776                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  777                 if (error)
  778                         break;
  779                 linux_to_bsd_termio(&lio, &bios);
  780                 error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
  781                     td));
  782                 break;
  783 
  784         case LINUX_TCSETAW:
  785                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  786                 if (error)
  787                         break;
  788                 linux_to_bsd_termio(&lio, &bios);
  789                 error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
  790                     td));
  791                 break;
  792 
  793         case LINUX_TCSETAF:
  794                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  795                 if (error)
  796                         break;
  797                 linux_to_bsd_termio(&lio, &bios);
  798                 error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
  799                     td));
  800                 break;
  801 
  802         /* LINUX_TCSBRK */
  803 
  804         case LINUX_TCXONC: {
  805                 switch (args->arg) {
  806                 case LINUX_TCOOFF:
  807                         args->cmd = TIOCSTOP;
  808                         break;
  809                 case LINUX_TCOON:
  810                         args->cmd = TIOCSTART;
  811                         break;
  812                 case LINUX_TCIOFF:
  813                 case LINUX_TCION: {
  814                         int c;
  815                         struct write_args wr;
  816                         error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios,
  817                             td->td_ucred, td);
  818                         if (error)
  819                                 break;
  820                         fdrop(fp, td);
  821                         c = (args->arg == LINUX_TCIOFF) ? VSTOP : VSTART;
  822                         c = bios.c_cc[c];
  823                         if (c != _POSIX_VDISABLE) {
  824                                 wr.fd = args->fd;
  825                                 wr.buf = &c;
  826                                 wr.nbyte = sizeof(c);
  827                                 return (sys_write(td, &wr));
  828                         } else
  829                                 return (0);
  830                 }
  831                 default:
  832                         fdrop(fp, td);
  833                         return (EINVAL);
  834                 }
  835                 args->arg = 0;
  836                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  837                 break;
  838         }
  839 
  840         case LINUX_TCFLSH: {
  841                 int val;
  842                 switch (args->arg) {
  843                 case LINUX_TCIFLUSH:
  844                         val = FREAD;
  845                         break;
  846                 case LINUX_TCOFLUSH:
  847                         val = FWRITE;
  848                         break;
  849                 case LINUX_TCIOFLUSH:
  850                         val = FREAD | FWRITE;
  851                         break;
  852                 default:
  853                         fdrop(fp, td);
  854                         return (EINVAL);
  855                 }
  856                 error = (fo_ioctl(fp,TIOCFLUSH,(caddr_t)&val,td->td_ucred,td));
  857                 break;
  858         }
  859 
  860         case LINUX_TIOCEXCL:
  861                 args->cmd = TIOCEXCL;
  862                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  863                 break;
  864 
  865         case LINUX_TIOCNXCL:
  866                 args->cmd = TIOCNXCL;
  867                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  868                 break;
  869 
  870         case LINUX_TIOCSCTTY:
  871                 args->cmd = TIOCSCTTY;
  872                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  873                 break;
  874 
  875         case LINUX_TIOCGPGRP:
  876                 args->cmd = TIOCGPGRP;
  877                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  878                 break;
  879 
  880         case LINUX_TIOCSPGRP:
  881                 args->cmd = TIOCSPGRP;
  882                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  883                 break;
  884 
  885         /* LINUX_TIOCOUTQ */
  886         /* LINUX_TIOCSTI */
  887 
  888         case LINUX_TIOCGWINSZ:
  889                 args->cmd = TIOCGWINSZ;
  890                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  891                 break;
  892 
  893         case LINUX_TIOCSWINSZ:
  894                 args->cmd = TIOCSWINSZ;
  895                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  896                 break;
  897 
  898         case LINUX_TIOCMGET:
  899                 args->cmd = TIOCMGET;
  900                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  901                 break;
  902 
  903         case LINUX_TIOCMBIS:
  904                 args->cmd = TIOCMBIS;
  905                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  906                 break;
  907 
  908         case LINUX_TIOCMBIC:
  909                 args->cmd = TIOCMBIC;
  910                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  911                 break;
  912 
  913         case LINUX_TIOCMSET:
  914                 args->cmd = TIOCMSET;
  915                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  916                 break;
  917 
  918         /* TIOCGSOFTCAR */
  919         /* TIOCSSOFTCAR */
  920 
  921         case LINUX_FIONREAD: /* LINUX_TIOCINQ */
  922                 args->cmd = FIONREAD;
  923                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  924                 break;
  925 
  926         /* LINUX_TIOCLINUX */
  927 
  928         case LINUX_TIOCCONS:
  929                 args->cmd = TIOCCONS;
  930                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  931                 break;
  932 
  933         case LINUX_TIOCGSERIAL: {
  934                 struct linux_serial_struct lss;
  935 
  936                 bzero(&lss, sizeof(lss));
  937                 lss.type = LINUX_PORT_16550A;
  938                 lss.flags = 0;
  939                 lss.close_delay = 0;
  940                 error = copyout(&lss, (void *)args->arg, sizeof(lss));
  941                 break;
  942         }
  943 
  944         case LINUX_TIOCSSERIAL: {
  945                 struct linux_serial_struct lss;
  946                 error = copyin((void *)args->arg, &lss, sizeof(lss));
  947                 if (error)
  948                         break;
  949                 /* XXX - It really helps to have an implementation that
  950                  * does nothing. NOT!
  951                  */
  952                 error = 0;
  953                 break;
  954         }
  955 
  956         case LINUX_TIOCPKT:
  957                 args->cmd = TIOCPKT;
  958                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  959                 break;
  960 
  961         case LINUX_FIONBIO:
  962                 args->cmd = FIONBIO;
  963                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  964                 break;
  965 
  966         case LINUX_TIOCNOTTY:
  967                 args->cmd = TIOCNOTTY;
  968                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  969                 break;
  970 
  971         case LINUX_TIOCSETD: {
  972                 int line;
  973                 switch (args->arg) {
  974                 case LINUX_N_TTY:
  975                         line = TTYDISC;
  976                         break;
  977                 case LINUX_N_SLIP:
  978                         line = SLIPDISC;
  979                         break;
  980                 case LINUX_N_PPP:
  981                         line = PPPDISC;
  982                         break;
  983                 default:
  984                         fdrop(fp, td);
  985                         return (EINVAL);
  986                 }
  987                 error = (fo_ioctl(fp, TIOCSETD, (caddr_t)&line, td->td_ucred,
  988                     td));
  989                 break;
  990         }
  991 
  992         case LINUX_TIOCGETD: {
  993                 int linux_line;
  994                 int bsd_line = TTYDISC;
  995                 error = fo_ioctl(fp, TIOCGETD, (caddr_t)&bsd_line,
  996                     td->td_ucred, td);
  997                 if (error)
  998                         break;
  999                 switch (bsd_line) {
 1000                 case TTYDISC:
 1001                         linux_line = LINUX_N_TTY;
 1002                         break;
 1003                 case SLIPDISC:
 1004                         linux_line = LINUX_N_SLIP;
 1005                         break;
 1006                 case PPPDISC:
 1007                         linux_line = LINUX_N_PPP;
 1008                         break;
 1009                 default:
 1010                         fdrop(fp, td);
 1011                         return (EINVAL);
 1012                 }
 1013                 error = (copyout(&linux_line, (void *)args->arg, sizeof(int)));
 1014                 break;
 1015         }
 1016 
 1017         /* LINUX_TCSBRKP */
 1018         /* LINUX_TIOCTTYGSTRUCT */
 1019 
 1020         case LINUX_FIONCLEX:
 1021                 args->cmd = FIONCLEX;
 1022                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1023                 break;
 1024 
 1025         case LINUX_FIOCLEX:
 1026                 args->cmd = FIOCLEX;
 1027                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1028                 break;
 1029 
 1030         case LINUX_FIOASYNC:
 1031                 args->cmd = FIOASYNC;
 1032                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1033                 break;
 1034 
 1035         /* LINUX_TIOCSERCONFIG */
 1036         /* LINUX_TIOCSERGWILD */
 1037         /* LINUX_TIOCSERSWILD */
 1038         /* LINUX_TIOCGLCKTRMIOS */
 1039         /* LINUX_TIOCSLCKTRMIOS */
 1040 
 1041         case LINUX_TIOCSBRK:
 1042                 args->cmd = TIOCSBRK;
 1043                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1044                 break;
 1045 
 1046         case LINUX_TIOCCBRK:
 1047                 args->cmd = TIOCCBRK;
 1048                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1049                 break;
 1050         case LINUX_TIOCGPTN: {
 1051                 int nb;
 1052 
 1053                 error = fo_ioctl(fp, TIOCGPTN, (caddr_t)&nb, td->td_ucred, td);
 1054                 if (!error)
 1055                         error = copyout(&nb, (void *)args->arg,
 1056                             sizeof(int));
 1057                 break;
 1058         }
 1059         case LINUX_TIOCSPTLCK:
 1060                 /* Our unlockpt() does nothing. */
 1061                 error = 0;
 1062                 break;
 1063         default:
 1064                 error = ENOIOCTL;
 1065                 break;
 1066         }
 1067 
 1068         fdrop(fp, td);
 1069         return (error);
 1070 }
 1071 
 1072 /*
 1073  * CDROM related ioctls
 1074  */
 1075 
 1076 struct linux_cdrom_msf
 1077 {
 1078         u_char  cdmsf_min0;
 1079         u_char  cdmsf_sec0;
 1080         u_char  cdmsf_frame0;
 1081         u_char  cdmsf_min1;
 1082         u_char  cdmsf_sec1;
 1083         u_char  cdmsf_frame1;
 1084 };
 1085 
 1086 struct linux_cdrom_tochdr
 1087 {
 1088         u_char  cdth_trk0;
 1089         u_char  cdth_trk1;
 1090 };
 1091 
 1092 union linux_cdrom_addr
 1093 {
 1094         struct {
 1095                 u_char  minute;
 1096                 u_char  second;
 1097                 u_char  frame;
 1098         } msf;
 1099         int     lba;
 1100 };
 1101 
 1102 struct linux_cdrom_tocentry
 1103 {
 1104         u_char  cdte_track;
 1105         u_char  cdte_adr:4;
 1106         u_char  cdte_ctrl:4;
 1107         u_char  cdte_format;
 1108         union linux_cdrom_addr cdte_addr;
 1109         u_char  cdte_datamode;
 1110 };
 1111 
 1112 struct linux_cdrom_subchnl
 1113 {
 1114         u_char  cdsc_format;
 1115         u_char  cdsc_audiostatus;
 1116         u_char  cdsc_adr:4;
 1117         u_char  cdsc_ctrl:4;
 1118         u_char  cdsc_trk;
 1119         u_char  cdsc_ind;
 1120         union linux_cdrom_addr cdsc_absaddr;
 1121         union linux_cdrom_addr cdsc_reladdr;
 1122 };
 1123 
 1124 struct l_cdrom_read_audio {
 1125         union linux_cdrom_addr addr;
 1126         u_char          addr_format;
 1127         l_int           nframes;
 1128         u_char          *buf;
 1129 };
 1130 
 1131 struct l_dvd_layer {
 1132         u_char          book_version:4;
 1133         u_char          book_type:4;
 1134         u_char          min_rate:4;
 1135         u_char          disc_size:4;
 1136         u_char          layer_type:4;
 1137         u_char          track_path:1;
 1138         u_char          nlayers:2;
 1139         u_char          track_density:4;
 1140         u_char          linear_density:4;
 1141         u_char          bca:1;
 1142         u_int32_t       start_sector;
 1143         u_int32_t       end_sector;
 1144         u_int32_t       end_sector_l0;
 1145 };
 1146 
 1147 struct l_dvd_physical {
 1148         u_char          type;
 1149         u_char          layer_num;
 1150         struct l_dvd_layer layer[4];
 1151 };
 1152 
 1153 struct l_dvd_copyright {
 1154         u_char          type;
 1155         u_char          layer_num;
 1156         u_char          cpst;
 1157         u_char          rmi;
 1158 };
 1159 
 1160 struct l_dvd_disckey {
 1161         u_char          type;
 1162         l_uint          agid:2;
 1163         u_char          value[2048];
 1164 };
 1165 
 1166 struct l_dvd_bca {
 1167         u_char          type;
 1168         l_int           len;
 1169         u_char          value[188];
 1170 };
 1171 
 1172 struct l_dvd_manufact {
 1173         u_char          type;
 1174         u_char          layer_num;
 1175         l_int           len;
 1176         u_char          value[2048];
 1177 };
 1178 
 1179 typedef union {
 1180         u_char                  type;
 1181         struct l_dvd_physical   physical;
 1182         struct l_dvd_copyright  copyright;
 1183         struct l_dvd_disckey    disckey;
 1184         struct l_dvd_bca        bca;
 1185         struct l_dvd_manufact   manufact;
 1186 } l_dvd_struct;
 1187 
 1188 typedef u_char l_dvd_key[5];
 1189 typedef u_char l_dvd_challenge[10];
 1190 
 1191 struct l_dvd_lu_send_agid {
 1192         u_char          type;
 1193         l_uint          agid:2;
 1194 };
 1195 
 1196 struct l_dvd_host_send_challenge {
 1197         u_char          type;
 1198         l_uint          agid:2;
 1199         l_dvd_challenge chal;
 1200 };
 1201 
 1202 struct l_dvd_send_key {
 1203         u_char          type;
 1204         l_uint          agid:2;
 1205         l_dvd_key       key;
 1206 };
 1207 
 1208 struct l_dvd_lu_send_challenge {
 1209         u_char          type;
 1210         l_uint          agid:2;
 1211         l_dvd_challenge chal;
 1212 };
 1213 
 1214 struct l_dvd_lu_send_title_key {
 1215         u_char          type;
 1216         l_uint          agid:2;
 1217         l_dvd_key       title_key;
 1218         l_int           lba;
 1219         l_uint          cpm:1;
 1220         l_uint          cp_sec:1;
 1221         l_uint          cgms:2;
 1222 };
 1223 
 1224 struct l_dvd_lu_send_asf {
 1225         u_char          type;
 1226         l_uint          agid:2;
 1227         l_uint          asf:1;
 1228 };
 1229 
 1230 struct l_dvd_host_send_rpcstate {
 1231         u_char          type;
 1232         u_char          pdrc;
 1233 };
 1234 
 1235 struct l_dvd_lu_send_rpcstate {
 1236         u_char          type:2;
 1237         u_char          vra:3;
 1238         u_char          ucca:3;
 1239         u_char          region_mask;
 1240         u_char          rpc_scheme;
 1241 };
 1242 
 1243 typedef union {
 1244         u_char                          type;
 1245         struct l_dvd_lu_send_agid       lsa;
 1246         struct l_dvd_host_send_challenge hsc;
 1247         struct l_dvd_send_key           lsk;
 1248         struct l_dvd_lu_send_challenge  lsc;
 1249         struct l_dvd_send_key           hsk;
 1250         struct l_dvd_lu_send_title_key  lstk;
 1251         struct l_dvd_lu_send_asf        lsasf;
 1252         struct l_dvd_host_send_rpcstate hrpcs;
 1253         struct l_dvd_lu_send_rpcstate   lrpcs;
 1254 } l_dvd_authinfo;
 1255 
 1256 static void
 1257 bsd_to_linux_msf_lba(u_char af, union msf_lba *bp, union linux_cdrom_addr *lp)
 1258 {
 1259         if (af == CD_LBA_FORMAT)
 1260                 lp->lba = bp->lba;
 1261         else {
 1262                 lp->msf.minute = bp->msf.minute;
 1263                 lp->msf.second = bp->msf.second;
 1264                 lp->msf.frame = bp->msf.frame;
 1265         }
 1266 }
 1267 
 1268 static void
 1269 set_linux_cdrom_addr(union linux_cdrom_addr *addr, int format, int lba)
 1270 {
 1271         if (format == LINUX_CDROM_MSF) {
 1272                 addr->msf.frame = lba % 75;
 1273                 lba /= 75;
 1274                 lba += 2;
 1275                 addr->msf.second = lba % 60;
 1276                 addr->msf.minute = lba / 60;
 1277         } else
 1278                 addr->lba = lba;
 1279 }
 1280 
 1281 static int
 1282 linux_to_bsd_dvd_struct(l_dvd_struct *lp, struct dvd_struct *bp)
 1283 {
 1284         bp->format = lp->type;
 1285         switch (bp->format) {
 1286         case DVD_STRUCT_PHYSICAL:
 1287                 if (bp->layer_num >= 4)
 1288                         return (EINVAL);
 1289                 bp->layer_num = lp->physical.layer_num;
 1290                 break;
 1291         case DVD_STRUCT_COPYRIGHT:
 1292                 bp->layer_num = lp->copyright.layer_num;
 1293                 break;
 1294         case DVD_STRUCT_DISCKEY:
 1295                 bp->agid = lp->disckey.agid;
 1296                 break;
 1297         case DVD_STRUCT_BCA:
 1298         case DVD_STRUCT_MANUFACT:
 1299                 break;
 1300         default:
 1301                 return (EINVAL);
 1302         }
 1303         return (0);
 1304 }
 1305 
 1306 static int
 1307 bsd_to_linux_dvd_struct(struct dvd_struct *bp, l_dvd_struct *lp)
 1308 {
 1309         switch (bp->format) {
 1310         case DVD_STRUCT_PHYSICAL: {
 1311                 struct dvd_layer *blp = (struct dvd_layer *)bp->data;
 1312                 struct l_dvd_layer *llp = &lp->physical.layer[bp->layer_num];
 1313                 memset(llp, 0, sizeof(*llp));
 1314                 llp->book_version = blp->book_version;
 1315                 llp->book_type = blp->book_type;
 1316                 llp->min_rate = blp->max_rate;
 1317                 llp->disc_size = blp->disc_size;
 1318                 llp->layer_type = blp->layer_type;
 1319                 llp->track_path = blp->track_path;
 1320                 llp->nlayers = blp->nlayers;
 1321                 llp->track_density = blp->track_density;
 1322                 llp->linear_density = blp->linear_density;
 1323                 llp->bca = blp->bca;
 1324                 llp->start_sector = blp->start_sector;
 1325                 llp->end_sector = blp->end_sector;
 1326                 llp->end_sector_l0 = blp->end_sector_l0;
 1327                 break;
 1328         }
 1329         case DVD_STRUCT_COPYRIGHT:
 1330                 lp->copyright.cpst = bp->cpst;
 1331                 lp->copyright.rmi = bp->rmi;
 1332                 break;
 1333         case DVD_STRUCT_DISCKEY:
 1334                 memcpy(lp->disckey.value, bp->data, sizeof(lp->disckey.value));
 1335                 break;
 1336         case DVD_STRUCT_BCA:
 1337                 lp->bca.len = bp->length;
 1338                 memcpy(lp->bca.value, bp->data, sizeof(lp->bca.value));
 1339                 break;
 1340         case DVD_STRUCT_MANUFACT:
 1341                 lp->manufact.len = bp->length;
 1342                 memcpy(lp->manufact.value, bp->data,
 1343                     sizeof(lp->manufact.value));
 1344                 /* lp->manufact.layer_num is unused in Linux (redhat 7.0). */
 1345                 break;
 1346         default:
 1347                 return (EINVAL);
 1348         }
 1349         return (0);
 1350 }
 1351 
 1352 static int
 1353 linux_to_bsd_dvd_authinfo(l_dvd_authinfo *lp, int *bcode,
 1354     struct dvd_authinfo *bp)
 1355 {
 1356         switch (lp->type) {
 1357         case LINUX_DVD_LU_SEND_AGID:
 1358                 *bcode = DVDIOCREPORTKEY;
 1359                 bp->format = DVD_REPORT_AGID;
 1360                 bp->agid = lp->lsa.agid;
 1361                 break;
 1362         case LINUX_DVD_HOST_SEND_CHALLENGE:
 1363                 *bcode = DVDIOCSENDKEY;
 1364                 bp->format = DVD_SEND_CHALLENGE;
 1365                 bp->agid = lp->hsc.agid;
 1366                 memcpy(bp->keychal, lp->hsc.chal, 10);
 1367                 break;
 1368         case LINUX_DVD_LU_SEND_KEY1:
 1369                 *bcode = DVDIOCREPORTKEY;
 1370                 bp->format = DVD_REPORT_KEY1;
 1371                 bp->agid = lp->lsk.agid;
 1372                 break;
 1373         case LINUX_DVD_LU_SEND_CHALLENGE:
 1374                 *bcode = DVDIOCREPORTKEY;
 1375                 bp->format = DVD_REPORT_CHALLENGE;
 1376                 bp->agid = lp->lsc.agid;
 1377                 break;
 1378         case LINUX_DVD_HOST_SEND_KEY2:
 1379                 *bcode = DVDIOCSENDKEY;
 1380                 bp->format = DVD_SEND_KEY2;
 1381                 bp->agid = lp->hsk.agid;
 1382                 memcpy(bp->keychal, lp->hsk.key, 5);
 1383                 break;
 1384         case LINUX_DVD_LU_SEND_TITLE_KEY:
 1385                 *bcode = DVDIOCREPORTKEY;
 1386                 bp->format = DVD_REPORT_TITLE_KEY;
 1387                 bp->agid = lp->lstk.agid;
 1388                 bp->lba = lp->lstk.lba;
 1389                 break;
 1390         case LINUX_DVD_LU_SEND_ASF:
 1391                 *bcode = DVDIOCREPORTKEY;
 1392                 bp->format = DVD_REPORT_ASF;
 1393                 bp->agid = lp->lsasf.agid;
 1394                 break;
 1395         case LINUX_DVD_INVALIDATE_AGID:
 1396                 *bcode = DVDIOCREPORTKEY;
 1397                 bp->format = DVD_INVALIDATE_AGID;
 1398                 bp->agid = lp->lsa.agid;
 1399                 break;
 1400         case LINUX_DVD_LU_SEND_RPC_STATE:
 1401                 *bcode = DVDIOCREPORTKEY;
 1402                 bp->format = DVD_REPORT_RPC;
 1403                 break;
 1404         case LINUX_DVD_HOST_SEND_RPC_STATE:
 1405                 *bcode = DVDIOCSENDKEY;
 1406                 bp->format = DVD_SEND_RPC;
 1407                 bp->region = lp->hrpcs.pdrc;
 1408                 break;
 1409         default:
 1410                 return (EINVAL);
 1411         }
 1412         return (0);
 1413 }
 1414 
 1415 static int
 1416 bsd_to_linux_dvd_authinfo(struct dvd_authinfo *bp, l_dvd_authinfo *lp)
 1417 {
 1418         switch (lp->type) {
 1419         case LINUX_DVD_LU_SEND_AGID:
 1420                 lp->lsa.agid = bp->agid;
 1421                 break;
 1422         case LINUX_DVD_HOST_SEND_CHALLENGE:
 1423                 lp->type = LINUX_DVD_LU_SEND_KEY1;
 1424                 break;
 1425         case LINUX_DVD_LU_SEND_KEY1:
 1426                 memcpy(lp->lsk.key, bp->keychal, sizeof(lp->lsk.key));
 1427                 break;
 1428         case LINUX_DVD_LU_SEND_CHALLENGE:
 1429                 memcpy(lp->lsc.chal, bp->keychal, sizeof(lp->lsc.chal));
 1430                 break;
 1431         case LINUX_DVD_HOST_SEND_KEY2:
 1432                 lp->type = LINUX_DVD_AUTH_ESTABLISHED;
 1433                 break;
 1434         case LINUX_DVD_LU_SEND_TITLE_KEY:
 1435                 memcpy(lp->lstk.title_key, bp->keychal,
 1436                     sizeof(lp->lstk.title_key));
 1437                 lp->lstk.cpm = bp->cpm;
 1438                 lp->lstk.cp_sec = bp->cp_sec;
 1439                 lp->lstk.cgms = bp->cgms;
 1440                 break;
 1441         case LINUX_DVD_LU_SEND_ASF:
 1442                 lp->lsasf.asf = bp->asf;
 1443                 break;
 1444         case LINUX_DVD_INVALIDATE_AGID:
 1445                 break;
 1446         case LINUX_DVD_LU_SEND_RPC_STATE:
 1447                 lp->lrpcs.type = bp->reg_type;
 1448                 lp->lrpcs.vra = bp->vend_rsts;
 1449                 lp->lrpcs.ucca = bp->user_rsts;
 1450                 lp->lrpcs.region_mask = bp->region;
 1451                 lp->lrpcs.rpc_scheme = bp->rpc_scheme;
 1452                 break;
 1453         case LINUX_DVD_HOST_SEND_RPC_STATE:
 1454                 break;
 1455         default:
 1456                 return (EINVAL);
 1457         }
 1458         return (0);
 1459 }
 1460 
 1461 static int
 1462 linux_ioctl_cdrom(struct thread *td, struct linux_ioctl_args *args)
 1463 {
 1464         struct file *fp;
 1465         int error;
 1466 
 1467         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 1468         if (error != 0)
 1469                 return (error);
 1470         switch (args->cmd & 0xffff) {
 1471 
 1472         case LINUX_CDROMPAUSE:
 1473                 args->cmd = CDIOCPAUSE;
 1474                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1475                 break;
 1476 
 1477         case LINUX_CDROMRESUME:
 1478                 args->cmd = CDIOCRESUME;
 1479                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1480                 break;
 1481 
 1482         case LINUX_CDROMPLAYMSF:
 1483                 args->cmd = CDIOCPLAYMSF;
 1484                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1485                 break;
 1486 
 1487         case LINUX_CDROMPLAYTRKIND:
 1488                 args->cmd = CDIOCPLAYTRACKS;
 1489                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1490                 break;
 1491 
 1492         case LINUX_CDROMREADTOCHDR: {
 1493                 struct ioc_toc_header th;
 1494                 struct linux_cdrom_tochdr lth;
 1495                 error = fo_ioctl(fp, CDIOREADTOCHEADER, (caddr_t)&th,
 1496                     td->td_ucred, td);
 1497                 if (!error) {
 1498                         lth.cdth_trk0 = th.starting_track;
 1499                         lth.cdth_trk1 = th.ending_track;
 1500                         copyout(&lth, (void *)args->arg, sizeof(lth));
 1501                 }
 1502                 break;
 1503         }
 1504 
 1505         case LINUX_CDROMREADTOCENTRY: {
 1506                 struct linux_cdrom_tocentry lte;
 1507                 struct ioc_read_toc_single_entry irtse;
 1508 
 1509                 error = copyin((void *)args->arg, &lte, sizeof(lte));
 1510                 if (error)
 1511                         break;
 1512                 irtse.address_format = lte.cdte_format;
 1513                 irtse.track = lte.cdte_track;
 1514                 error = fo_ioctl(fp, CDIOREADTOCENTRY, (caddr_t)&irtse,
 1515                     td->td_ucred, td);
 1516                 if (!error) {
 1517                         lte.cdte_ctrl = irtse.entry.control;
 1518                         lte.cdte_adr = irtse.entry.addr_type;
 1519                         bsd_to_linux_msf_lba(irtse.address_format,
 1520                             &irtse.entry.addr, &lte.cdte_addr);
 1521                         error = copyout(&lte, (void *)args->arg, sizeof(lte));
 1522                 }
 1523                 break;
 1524         }
 1525 
 1526         case LINUX_CDROMSTOP:
 1527                 args->cmd = CDIOCSTOP;
 1528                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1529                 break;
 1530 
 1531         case LINUX_CDROMSTART:
 1532                 args->cmd = CDIOCSTART;
 1533                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1534                 break;
 1535 
 1536         case LINUX_CDROMEJECT:
 1537                 args->cmd = CDIOCEJECT;
 1538                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1539                 break;
 1540 
 1541         /* LINUX_CDROMVOLCTRL */
 1542 
 1543         case LINUX_CDROMSUBCHNL: {
 1544                 struct linux_cdrom_subchnl sc;
 1545                 struct ioc_read_subchannel bsdsc;
 1546                 struct cd_sub_channel_info bsdinfo;
 1547 
 1548                 bsdsc.address_format = CD_LBA_FORMAT;
 1549                 bsdsc.data_format = CD_CURRENT_POSITION;
 1550                 bsdsc.track = 0;
 1551                 bsdsc.data_len = sizeof(bsdinfo);
 1552                 bsdsc.data = &bsdinfo;
 1553                 error = fo_ioctl(fp, CDIOCREADSUBCHANNEL_SYSSPACE,
 1554                     (caddr_t)&bsdsc, td->td_ucred, td);
 1555                 if (error)
 1556                         break;
 1557                 error = copyin((void *)args->arg, &sc, sizeof(sc));
 1558                 if (error)
 1559                         break;
 1560                 sc.cdsc_audiostatus = bsdinfo.header.audio_status;
 1561                 sc.cdsc_adr = bsdinfo.what.position.addr_type;
 1562                 sc.cdsc_ctrl = bsdinfo.what.position.control;
 1563                 sc.cdsc_trk = bsdinfo.what.position.track_number;
 1564                 sc.cdsc_ind = bsdinfo.what.position.index_number;
 1565                 set_linux_cdrom_addr(&sc.cdsc_absaddr, sc.cdsc_format,
 1566                     bsdinfo.what.position.absaddr.lba);
 1567                 set_linux_cdrom_addr(&sc.cdsc_reladdr, sc.cdsc_format,
 1568                     bsdinfo.what.position.reladdr.lba);
 1569                 error = copyout(&sc, (void *)args->arg, sizeof(sc));
 1570                 break;
 1571         }
 1572 
 1573         /* LINUX_CDROMREADMODE2 */
 1574         /* LINUX_CDROMREADMODE1 */
 1575         /* LINUX_CDROMREADAUDIO */
 1576         /* LINUX_CDROMEJECT_SW */
 1577         /* LINUX_CDROMMULTISESSION */
 1578         /* LINUX_CDROM_GET_UPC */
 1579 
 1580         case LINUX_CDROMRESET:
 1581                 args->cmd = CDIOCRESET;
 1582                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1583                 break;
 1584 
 1585         /* LINUX_CDROMVOLREAD */
 1586         /* LINUX_CDROMREADRAW */
 1587         /* LINUX_CDROMREADCOOKED */
 1588         /* LINUX_CDROMSEEK */
 1589         /* LINUX_CDROMPLAYBLK */
 1590         /* LINUX_CDROMREADALL */
 1591         /* LINUX_CDROMCLOSETRAY */
 1592         /* LINUX_CDROMLOADFROMSLOT */
 1593         /* LINUX_CDROMGETSPINDOWN */
 1594         /* LINUX_CDROMSETSPINDOWN */
 1595         /* LINUX_CDROM_SET_OPTIONS */
 1596         /* LINUX_CDROM_CLEAR_OPTIONS */
 1597         /* LINUX_CDROM_SELECT_SPEED */
 1598         /* LINUX_CDROM_SELECT_DISC */
 1599         /* LINUX_CDROM_MEDIA_CHANGED */
 1600         /* LINUX_CDROM_DRIVE_STATUS */
 1601         /* LINUX_CDROM_DISC_STATUS */
 1602         /* LINUX_CDROM_CHANGER_NSLOTS */
 1603         /* LINUX_CDROM_LOCKDOOR */
 1604         /* LINUX_CDROM_DEBUG */
 1605         /* LINUX_CDROM_GET_CAPABILITY */
 1606         /* LINUX_CDROMAUDIOBUFSIZ */
 1607 
 1608         case LINUX_DVD_READ_STRUCT: {
 1609                 l_dvd_struct *lds;
 1610                 struct dvd_struct *bds;
 1611 
 1612                 lds = malloc(sizeof(*lds), M_LINUX, M_WAITOK);
 1613                 bds = malloc(sizeof(*bds), M_LINUX, M_WAITOK);
 1614                 error = copyin((void *)args->arg, lds, sizeof(*lds));
 1615                 if (error)
 1616                         goto out;
 1617                 error = linux_to_bsd_dvd_struct(lds, bds);
 1618                 if (error)
 1619                         goto out;
 1620                 error = fo_ioctl(fp, DVDIOCREADSTRUCTURE, (caddr_t)bds,
 1621                     td->td_ucred, td);
 1622                 if (error)
 1623                         goto out;
 1624                 error = bsd_to_linux_dvd_struct(bds, lds);
 1625                 if (error)
 1626                         goto out;
 1627                 error = copyout(lds, (void *)args->arg, sizeof(*lds));
 1628         out:
 1629                 free(bds, M_LINUX);
 1630                 free(lds, M_LINUX);
 1631                 break;
 1632         }
 1633 
 1634         /* LINUX_DVD_WRITE_STRUCT */
 1635 
 1636         case LINUX_DVD_AUTH: {
 1637                 l_dvd_authinfo lda;
 1638                 struct dvd_authinfo bda;
 1639                 int bcode;
 1640 
 1641                 error = copyin((void *)args->arg, &lda, sizeof(lda));
 1642                 if (error)
 1643                         break;
 1644                 error = linux_to_bsd_dvd_authinfo(&lda, &bcode, &bda);
 1645                 if (error)
 1646                         break;
 1647                 error = fo_ioctl(fp, bcode, (caddr_t)&bda, td->td_ucred,
 1648                     td);
 1649                 if (error) {
 1650                         if (lda.type == LINUX_DVD_HOST_SEND_KEY2) {
 1651                                 lda.type = LINUX_DVD_AUTH_FAILURE;
 1652                                 copyout(&lda, (void *)args->arg, sizeof(lda));
 1653                         }
 1654                         break;
 1655                 }
 1656                 error = bsd_to_linux_dvd_authinfo(&bda, &lda);
 1657                 if (error)
 1658                         break;
 1659                 error = copyout(&lda, (void *)args->arg, sizeof(lda));
 1660                 break;
 1661         }
 1662 
 1663         case LINUX_SCSI_GET_BUS_NUMBER:
 1664         {
 1665                 struct sg_scsi_id id;
 1666 
 1667                 error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
 1668                     td->td_ucred, td);
 1669                 if (error)
 1670                         break;
 1671                 error = copyout(&id.channel, (void *)args->arg, sizeof(int));
 1672                 break;
 1673         }
 1674 
 1675         case LINUX_SCSI_GET_IDLUN:
 1676         {
 1677                 struct sg_scsi_id id;
 1678                 struct scsi_idlun idl;
 1679 
 1680                 error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
 1681                     td->td_ucred, td);
 1682                 if (error)
 1683                         break;
 1684                 idl.dev_id = (id.scsi_id & 0xff) + ((id.lun & 0xff) << 8) +
 1685                     ((id.channel & 0xff) << 16) + ((id.host_no & 0xff) << 24);
 1686                 idl.host_unique_id = id.host_no;
 1687                 error = copyout(&idl, (void *)args->arg, sizeof(idl));
 1688                 break;
 1689         }
 1690 
 1691         /* LINUX_CDROM_SEND_PACKET */
 1692         /* LINUX_CDROM_NEXT_WRITABLE */
 1693         /* LINUX_CDROM_LAST_WRITTEN */
 1694 
 1695         default:
 1696                 error = ENOIOCTL;
 1697                 break;
 1698         }
 1699 
 1700         fdrop(fp, td);
 1701         return (error);
 1702 }
 1703 
 1704 static int
 1705 linux_ioctl_vfat(struct thread *td, struct linux_ioctl_args *args)
 1706 {
 1707 
 1708         return (ENOTTY);
 1709 }
 1710 
 1711 /*
 1712  * Sound related ioctls
 1713  */
 1714 
 1715 struct linux_old_mixer_info {
 1716         char    id[16];
 1717         char    name[32];
 1718 };
 1719 
 1720 static u_int32_t dirbits[4] = { IOC_VOID, IOC_IN, IOC_OUT, IOC_INOUT };
 1721 
 1722 #define SETDIR(c)       (((c) & ~IOC_DIRMASK) | dirbits[args->cmd >> 30])
 1723 
 1724 static int
 1725 linux_ioctl_sound(struct thread *td, struct linux_ioctl_args *args)
 1726 {
 1727 
 1728         switch (args->cmd & 0xffff) {
 1729 
 1730         case LINUX_SOUND_MIXER_WRITE_VOLUME:
 1731                 args->cmd = SETDIR(SOUND_MIXER_WRITE_VOLUME);
 1732                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1733 
 1734         case LINUX_SOUND_MIXER_WRITE_BASS:
 1735                 args->cmd = SETDIR(SOUND_MIXER_WRITE_BASS);
 1736                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1737 
 1738         case LINUX_SOUND_MIXER_WRITE_TREBLE:
 1739                 args->cmd = SETDIR(SOUND_MIXER_WRITE_TREBLE);
 1740                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1741 
 1742         case LINUX_SOUND_MIXER_WRITE_SYNTH:
 1743                 args->cmd = SETDIR(SOUND_MIXER_WRITE_SYNTH);
 1744                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1745 
 1746         case LINUX_SOUND_MIXER_WRITE_PCM:
 1747                 args->cmd = SETDIR(SOUND_MIXER_WRITE_PCM);
 1748                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1749 
 1750         case LINUX_SOUND_MIXER_WRITE_SPEAKER:
 1751                 args->cmd = SETDIR(SOUND_MIXER_WRITE_SPEAKER);
 1752                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1753 
 1754         case LINUX_SOUND_MIXER_WRITE_LINE:
 1755                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE);
 1756                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1757 
 1758         case LINUX_SOUND_MIXER_WRITE_MIC:
 1759                 args->cmd = SETDIR(SOUND_MIXER_WRITE_MIC);
 1760                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1761 
 1762         case LINUX_SOUND_MIXER_WRITE_CD:
 1763                 args->cmd = SETDIR(SOUND_MIXER_WRITE_CD);
 1764                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1765 
 1766         case LINUX_SOUND_MIXER_WRITE_IMIX:
 1767                 args->cmd = SETDIR(SOUND_MIXER_WRITE_IMIX);
 1768                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1769 
 1770         case LINUX_SOUND_MIXER_WRITE_ALTPCM:
 1771                 args->cmd = SETDIR(SOUND_MIXER_WRITE_ALTPCM);
 1772                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1773 
 1774         case LINUX_SOUND_MIXER_WRITE_RECLEV:
 1775                 args->cmd = SETDIR(SOUND_MIXER_WRITE_RECLEV);
 1776                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1777 
 1778         case LINUX_SOUND_MIXER_WRITE_IGAIN:
 1779                 args->cmd = SETDIR(SOUND_MIXER_WRITE_IGAIN);
 1780                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1781 
 1782         case LINUX_SOUND_MIXER_WRITE_OGAIN:
 1783                 args->cmd = SETDIR(SOUND_MIXER_WRITE_OGAIN);
 1784                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1785 
 1786         case LINUX_SOUND_MIXER_WRITE_LINE1:
 1787                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE1);
 1788                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1789 
 1790         case LINUX_SOUND_MIXER_WRITE_LINE2:
 1791                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE2);
 1792                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1793 
 1794         case LINUX_SOUND_MIXER_WRITE_LINE3:
 1795                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE3);
 1796                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1797 
 1798         case LINUX_SOUND_MIXER_INFO: {
 1799                 /* Key on encoded length */
 1800                 switch ((args->cmd >> 16) & 0x1fff) {
 1801                 case 0x005c: {  /* SOUND_MIXER_INFO */
 1802                         args->cmd = SOUND_MIXER_INFO;
 1803                         return (sys_ioctl(td, (struct ioctl_args *)args));
 1804                 }
 1805                 case 0x0030: {  /* SOUND_OLD_MIXER_INFO */
 1806                         struct linux_old_mixer_info info;
 1807                         bzero(&info, sizeof(info));
 1808                         strncpy(info.id, "OSS", sizeof(info.id) - 1);
 1809                         strncpy(info.name, "FreeBSD OSS Mixer", sizeof(info.name) - 1);
 1810                         copyout(&info, (void *)args->arg, sizeof(info));
 1811                         return (0);
 1812                 }
 1813                 default:
 1814                         return (ENOIOCTL);
 1815                 }
 1816                 break;
 1817         }
 1818 
 1819         case LINUX_OSS_GETVERSION: {
 1820                 int version = linux_get_oss_version(td);
 1821                 return (copyout(&version, (void *)args->arg, sizeof(int)));
 1822         }
 1823 
 1824         case LINUX_SOUND_MIXER_READ_STEREODEVS:
 1825                 args->cmd = SOUND_MIXER_READ_STEREODEVS;
 1826                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1827 
 1828         case LINUX_SOUND_MIXER_READ_CAPS:
 1829                 args->cmd = SOUND_MIXER_READ_CAPS;
 1830                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1831 
 1832         case LINUX_SOUND_MIXER_READ_RECMASK:
 1833                 args->cmd = SOUND_MIXER_READ_RECMASK;
 1834                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1835 
 1836         case LINUX_SOUND_MIXER_READ_DEVMASK:
 1837                 args->cmd = SOUND_MIXER_READ_DEVMASK;
 1838                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1839 
 1840         case LINUX_SOUND_MIXER_WRITE_RECSRC:
 1841                 args->cmd = SETDIR(SOUND_MIXER_WRITE_RECSRC);
 1842                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1843 
 1844         case LINUX_SNDCTL_DSP_RESET:
 1845                 args->cmd = SNDCTL_DSP_RESET;
 1846                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1847 
 1848         case LINUX_SNDCTL_DSP_SYNC:
 1849                 args->cmd = SNDCTL_DSP_SYNC;
 1850                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1851 
 1852         case LINUX_SNDCTL_DSP_SPEED:
 1853                 args->cmd = SNDCTL_DSP_SPEED;
 1854                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1855 
 1856         case LINUX_SNDCTL_DSP_STEREO:
 1857                 args->cmd = SNDCTL_DSP_STEREO;
 1858                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1859 
 1860         case LINUX_SNDCTL_DSP_GETBLKSIZE: /* LINUX_SNDCTL_DSP_SETBLKSIZE */
 1861                 args->cmd = SNDCTL_DSP_GETBLKSIZE;
 1862                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1863 
 1864         case LINUX_SNDCTL_DSP_SETFMT:
 1865                 args->cmd = SNDCTL_DSP_SETFMT;
 1866                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1867 
 1868         case LINUX_SOUND_PCM_WRITE_CHANNELS:
 1869                 args->cmd = SOUND_PCM_WRITE_CHANNELS;
 1870                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1871 
 1872         case LINUX_SOUND_PCM_WRITE_FILTER:
 1873                 args->cmd = SOUND_PCM_WRITE_FILTER;
 1874                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1875 
 1876         case LINUX_SNDCTL_DSP_POST:
 1877                 args->cmd = SNDCTL_DSP_POST;
 1878                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1879 
 1880         case LINUX_SNDCTL_DSP_SUBDIVIDE:
 1881                 args->cmd = SNDCTL_DSP_SUBDIVIDE;
 1882                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1883 
 1884         case LINUX_SNDCTL_DSP_SETFRAGMENT:
 1885                 args->cmd = SNDCTL_DSP_SETFRAGMENT;
 1886                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1887 
 1888         case LINUX_SNDCTL_DSP_GETFMTS:
 1889                 args->cmd = SNDCTL_DSP_GETFMTS;
 1890                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1891 
 1892         case LINUX_SNDCTL_DSP_GETOSPACE:
 1893                 args->cmd = SNDCTL_DSP_GETOSPACE;
 1894                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1895 
 1896         case LINUX_SNDCTL_DSP_GETISPACE:
 1897                 args->cmd = SNDCTL_DSP_GETISPACE;
 1898                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1899 
 1900         case LINUX_SNDCTL_DSP_NONBLOCK:
 1901                 args->cmd = SNDCTL_DSP_NONBLOCK;
 1902                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1903 
 1904         case LINUX_SNDCTL_DSP_GETCAPS:
 1905                 args->cmd = SNDCTL_DSP_GETCAPS;
 1906                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1907 
 1908         case LINUX_SNDCTL_DSP_SETTRIGGER: /* LINUX_SNDCTL_GETTRIGGER */
 1909                 args->cmd = SNDCTL_DSP_SETTRIGGER;
 1910                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1911 
 1912         case LINUX_SNDCTL_DSP_GETIPTR:
 1913                 args->cmd = SNDCTL_DSP_GETIPTR;
 1914                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1915 
 1916         case LINUX_SNDCTL_DSP_GETOPTR:
 1917                 args->cmd = SNDCTL_DSP_GETOPTR;
 1918                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1919 
 1920         case LINUX_SNDCTL_DSP_SETDUPLEX:
 1921                 args->cmd = SNDCTL_DSP_SETDUPLEX;
 1922                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1923 
 1924         case LINUX_SNDCTL_DSP_GETODELAY:
 1925                 args->cmd = SNDCTL_DSP_GETODELAY;
 1926                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1927 
 1928         case LINUX_SNDCTL_SEQ_RESET:
 1929                 args->cmd = SNDCTL_SEQ_RESET;
 1930                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1931 
 1932         case LINUX_SNDCTL_SEQ_SYNC:
 1933                 args->cmd = SNDCTL_SEQ_SYNC;
 1934                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1935 
 1936         case LINUX_SNDCTL_SYNTH_INFO:
 1937                 args->cmd = SNDCTL_SYNTH_INFO;
 1938                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1939 
 1940         case LINUX_SNDCTL_SEQ_CTRLRATE:
 1941                 args->cmd = SNDCTL_SEQ_CTRLRATE;
 1942                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1943 
 1944         case LINUX_SNDCTL_SEQ_GETOUTCOUNT:
 1945                 args->cmd = SNDCTL_SEQ_GETOUTCOUNT;
 1946                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1947 
 1948         case LINUX_SNDCTL_SEQ_GETINCOUNT:
 1949                 args->cmd = SNDCTL_SEQ_GETINCOUNT;
 1950                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1951 
 1952         case LINUX_SNDCTL_SEQ_PERCMODE:
 1953                 args->cmd = SNDCTL_SEQ_PERCMODE;
 1954                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1955 
 1956         case LINUX_SNDCTL_FM_LOAD_INSTR:
 1957                 args->cmd = SNDCTL_FM_LOAD_INSTR;
 1958                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1959 
 1960         case LINUX_SNDCTL_SEQ_TESTMIDI:
 1961                 args->cmd = SNDCTL_SEQ_TESTMIDI;
 1962                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1963 
 1964         case LINUX_SNDCTL_SEQ_RESETSAMPLES:
 1965                 args->cmd = SNDCTL_SEQ_RESETSAMPLES;
 1966                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1967 
 1968         case LINUX_SNDCTL_SEQ_NRSYNTHS:
 1969                 args->cmd = SNDCTL_SEQ_NRSYNTHS;
 1970                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1971 
 1972         case LINUX_SNDCTL_SEQ_NRMIDIS:
 1973                 args->cmd = SNDCTL_SEQ_NRMIDIS;
 1974                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1975 
 1976         case LINUX_SNDCTL_MIDI_INFO:
 1977                 args->cmd = SNDCTL_MIDI_INFO;
 1978                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1979 
 1980         case LINUX_SNDCTL_SEQ_TRESHOLD:
 1981                 args->cmd = SNDCTL_SEQ_TRESHOLD;
 1982                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1983 
 1984         case LINUX_SNDCTL_SYNTH_MEMAVL:
 1985                 args->cmd = SNDCTL_SYNTH_MEMAVL;
 1986                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1987 
 1988         }
 1989 
 1990         return (ENOIOCTL);
 1991 }
 1992 
 1993 /*
 1994  * Console related ioctls
 1995  */
 1996 
 1997 static int
 1998 linux_ioctl_console(struct thread *td, struct linux_ioctl_args *args)
 1999 {
 2000         struct file *fp;
 2001         int error;
 2002 
 2003         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 2004         if (error != 0)
 2005                 return (error);
 2006         switch (args->cmd & 0xffff) {
 2007 
 2008         case LINUX_KIOCSOUND:
 2009                 args->cmd = KIOCSOUND;
 2010                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2011                 break;
 2012 
 2013         case LINUX_KDMKTONE:
 2014                 args->cmd = KDMKTONE;
 2015                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2016                 break;
 2017 
 2018         case LINUX_KDGETLED:
 2019                 args->cmd = KDGETLED;
 2020                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2021                 break;
 2022 
 2023         case LINUX_KDSETLED:
 2024                 args->cmd = KDSETLED;
 2025                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2026                 break;
 2027 
 2028         case LINUX_KDSETMODE:
 2029                 args->cmd = KDSETMODE;
 2030                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2031                 break;
 2032 
 2033         case LINUX_KDGETMODE:
 2034                 args->cmd = KDGETMODE;
 2035                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2036                 break;
 2037 
 2038         case LINUX_KDGKBMODE:
 2039                 args->cmd = KDGKBMODE;
 2040                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2041                 break;
 2042 
 2043         case LINUX_KDSKBMODE: {
 2044                 int kbdmode;
 2045                 switch (args->arg) {
 2046                 case LINUX_KBD_RAW:
 2047                         kbdmode = K_RAW;
 2048                         break;
 2049                 case LINUX_KBD_XLATE:
 2050                         kbdmode = K_XLATE;
 2051                         break;
 2052                 case LINUX_KBD_MEDIUMRAW:
 2053                         kbdmode = K_RAW;
 2054                         break;
 2055                 default:
 2056                         fdrop(fp, td);
 2057                         return (EINVAL);
 2058                 }
 2059                 error = (fo_ioctl(fp, KDSKBMODE, (caddr_t)&kbdmode,
 2060                     td->td_ucred, td));
 2061                 break;
 2062         }
 2063 
 2064         case LINUX_VT_OPENQRY:
 2065                 args->cmd = VT_OPENQRY;
 2066                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2067                 break;
 2068 
 2069         case LINUX_VT_GETMODE:
 2070                 args->cmd = VT_GETMODE;
 2071                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2072                 break;
 2073 
 2074         case LINUX_VT_SETMODE: {
 2075                 struct vt_mode mode;
 2076                 if ((error = copyin((void *)args->arg, &mode, sizeof(mode))))
 2077                         break;
 2078                 if (LINUX_SIG_VALID(mode.relsig))
 2079                         mode.relsig = linux_to_bsd_signal(mode.relsig);
 2080                 else
 2081                         mode.relsig = 0;
 2082                 if (LINUX_SIG_VALID(mode.acqsig))
 2083                         mode.acqsig = linux_to_bsd_signal(mode.acqsig);
 2084                 else
 2085                         mode.acqsig = 0;
 2086                 /* XXX. Linux ignores frsig and set it to 0. */
 2087                 mode.frsig = 0;
 2088                 if ((error = copyout(&mode, (void *)args->arg, sizeof(mode))))
 2089                         break;
 2090                 args->cmd = VT_SETMODE;
 2091                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2092                 break;
 2093         }
 2094 
 2095         case LINUX_VT_GETSTATE:
 2096                 args->cmd = VT_GETACTIVE;
 2097                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2098                 break;
 2099 
 2100         case LINUX_VT_RELDISP:
 2101                 args->cmd = VT_RELDISP;
 2102                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2103                 break;
 2104 
 2105         case LINUX_VT_ACTIVATE:
 2106                 args->cmd = VT_ACTIVATE;
 2107                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2108                 break;
 2109 
 2110         case LINUX_VT_WAITACTIVE:
 2111                 args->cmd = VT_WAITACTIVE;
 2112                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2113                 break;
 2114 
 2115         default:
 2116                 error = ENOIOCTL;
 2117                 break;
 2118         }
 2119 
 2120         fdrop(fp, td);
 2121         return (error);
 2122 }
 2123 
 2124 /*
 2125  * Criteria for interface name translation
 2126  */
 2127 #define IFP_IS_ETH(ifp) (ifp->if_type == IFT_ETHER)
 2128 
 2129 /*
 2130  * Translate a Linux interface name to a FreeBSD interface name,
 2131  * and return the associated ifnet structure
 2132  * bsdname and lxname need to be least IFNAMSIZ bytes long, but
 2133  * can point to the same buffer.
 2134  */
 2135 
 2136 static struct ifnet *
 2137 ifname_linux_to_bsd(struct thread *td, const char *lxname, char *bsdname)
 2138 {
 2139         struct ifnet *ifp;
 2140         int len, unit;
 2141         char *ep;
 2142         int is_eth, index;
 2143 
 2144         for (len = 0; len < LINUX_IFNAMSIZ; ++len)
 2145                 if (!isalpha(lxname[len]))
 2146                         break;
 2147         if (len == 0 || len == LINUX_IFNAMSIZ)
 2148                 return (NULL);
 2149         unit = (int)strtoul(lxname + len, &ep, 10);
 2150         if (ep == NULL || ep == lxname + len || ep >= lxname + LINUX_IFNAMSIZ)
 2151                 return (NULL);
 2152         index = 0;
 2153         is_eth = (len == 3 && !strncmp(lxname, "eth", len)) ? 1 : 0;
 2154         CURVNET_SET(TD_TO_VNET(td));
 2155         IFNET_RLOCK();
 2156         CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2157                 /*
 2158                  * Allow Linux programs to use FreeBSD names. Don't presume
 2159                  * we never have an interface named "eth", so don't make
 2160                  * the test optional based on is_eth.
 2161                  */
 2162                 if (strncmp(ifp->if_xname, lxname, LINUX_IFNAMSIZ) == 0)
 2163                         break;
 2164                 if (is_eth && IFP_IS_ETH(ifp) && unit == index++)
 2165                         break;
 2166         }
 2167         IFNET_RUNLOCK();
 2168         CURVNET_RESTORE();
 2169         if (ifp != NULL)
 2170                 strlcpy(bsdname, ifp->if_xname, IFNAMSIZ);
 2171         return (ifp);
 2172 }
 2173 
 2174 /*
 2175  * Implement the SIOCGIFNAME ioctl
 2176  */
 2177 
 2178 static int
 2179 linux_ioctl_ifname(struct thread *td, struct l_ifreq *uifr)
 2180 {
 2181         struct l_ifreq ifr;
 2182         struct ifnet *ifp;
 2183         int error, ethno, index;
 2184 
 2185         error = copyin(uifr, &ifr, sizeof(ifr));
 2186         if (error != 0)
 2187                 return (error);
 2188 
 2189         CURVNET_SET(TD_TO_VNET(curthread));
 2190         IFNET_RLOCK();
 2191         index = 1;      /* ifr.ifr_ifindex starts from 1 */
 2192         ethno = 0;
 2193         error = ENODEV;
 2194         CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2195                 if (ifr.ifr_ifindex == index) {
 2196                         if (IFP_IS_ETH(ifp))
 2197                                 snprintf(ifr.ifr_name, LINUX_IFNAMSIZ,
 2198                                     "eth%d", ethno);
 2199                         else
 2200                                 strlcpy(ifr.ifr_name, ifp->if_xname,
 2201                                     LINUX_IFNAMSIZ);
 2202                         error = 0;
 2203                         break;
 2204                 }
 2205                 if (IFP_IS_ETH(ifp))
 2206                         ethno++;
 2207                 index++;
 2208         }
 2209         IFNET_RUNLOCK();
 2210         if (error == 0)
 2211                 error = copyout(&ifr, uifr, sizeof(ifr));
 2212         CURVNET_RESTORE();
 2213 
 2214         return (error);
 2215 }
 2216 
 2217 /*
 2218  * Implement the SIOCGIFCONF ioctl
 2219  */
 2220 
 2221 static int
 2222 linux_ifconf(struct thread *td, struct ifconf *uifc)
 2223 {
 2224 #ifdef COMPAT_LINUX32
 2225         struct l_ifconf ifc;
 2226 #else
 2227         struct ifconf ifc;
 2228 #endif
 2229         struct l_ifreq ifr;
 2230         struct ifnet *ifp;
 2231         struct ifaddr *ifa;
 2232         struct sbuf *sb;
 2233         int error, ethno, full = 0, valid_len, max_len;
 2234 
 2235         error = copyin(uifc, &ifc, sizeof(ifc));
 2236         if (error != 0)
 2237                 return (error);
 2238 
 2239         max_len = MAXPHYS - 1;
 2240 
 2241         CURVNET_SET(TD_TO_VNET(td));
 2242         /* handle the 'request buffer size' case */
 2243         if ((l_uintptr_t)ifc.ifc_buf == PTROUT(NULL)) {
 2244                 ifc.ifc_len = 0;
 2245                 IFNET_RLOCK();
 2246                 CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2247                         CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2248                                 struct sockaddr *sa = ifa->ifa_addr;
 2249                                 if (sa->sa_family == AF_INET)
 2250                                         ifc.ifc_len += sizeof(ifr);
 2251                         }
 2252                 }
 2253                 IFNET_RUNLOCK();
 2254                 error = copyout(&ifc, uifc, sizeof(ifc));
 2255                 CURVNET_RESTORE();
 2256                 return (error);
 2257         }
 2258 
 2259         if (ifc.ifc_len <= 0) {
 2260                 CURVNET_RESTORE();
 2261                 return (EINVAL);
 2262         }
 2263 
 2264 again:
 2265         /* Keep track of eth interfaces */
 2266         ethno = 0;
 2267         if (ifc.ifc_len <= max_len) {
 2268                 max_len = ifc.ifc_len;
 2269                 full = 1;
 2270         }
 2271         sb = sbuf_new(NULL, NULL, max_len + 1, SBUF_FIXEDLEN);
 2272         max_len = 0;
 2273         valid_len = 0;
 2274 
 2275         /* Return all AF_INET addresses of all interfaces */
 2276         IFNET_RLOCK();
 2277         CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2278                 int addrs = 0;
 2279 
 2280                 bzero(&ifr, sizeof(ifr));
 2281                 if (IFP_IS_ETH(ifp))
 2282                         snprintf(ifr.ifr_name, LINUX_IFNAMSIZ, "eth%d",
 2283                             ethno++);
 2284                 else
 2285                         strlcpy(ifr.ifr_name, ifp->if_xname, LINUX_IFNAMSIZ);
 2286 
 2287                 /* Walk the address list */
 2288                 CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2289                         struct sockaddr *sa = ifa->ifa_addr;
 2290 
 2291                         if (sa->sa_family == AF_INET) {
 2292                                 ifr.ifr_addr.sa_family = LINUX_AF_INET;
 2293                                 memcpy(ifr.ifr_addr.sa_data, sa->sa_data,
 2294                                     sizeof(ifr.ifr_addr.sa_data));
 2295                                 sbuf_bcat(sb, &ifr, sizeof(ifr));
 2296                                 max_len += sizeof(ifr);
 2297                                 addrs++;
 2298                         }
 2299 
 2300                         if (sbuf_error(sb) == 0)
 2301                                 valid_len = sbuf_len(sb);
 2302                 }
 2303                 if (addrs == 0) {
 2304                         bzero((caddr_t)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
 2305                         sbuf_bcat(sb, &ifr, sizeof(ifr));
 2306                         max_len += sizeof(ifr);
 2307 
 2308                         if (sbuf_error(sb) == 0)
 2309                                 valid_len = sbuf_len(sb);
 2310                 }
 2311         }
 2312         IFNET_RUNLOCK();
 2313 
 2314         if (valid_len != max_len && !full) {
 2315                 sbuf_delete(sb);
 2316                 goto again;
 2317         }
 2318 
 2319         ifc.ifc_len = valid_len;
 2320         sbuf_finish(sb);
 2321         error = copyout(sbuf_data(sb), PTRIN(ifc.ifc_buf), ifc.ifc_len);
 2322         if (error == 0)
 2323                 error = copyout(&ifc, uifc, sizeof(ifc));
 2324         sbuf_delete(sb);
 2325         CURVNET_RESTORE();
 2326 
 2327         return (error);
 2328 }
 2329 
 2330 static int
 2331 linux_gifflags(struct thread *td, struct ifnet *ifp, struct l_ifreq *ifr)
 2332 {
 2333         l_short flags;
 2334 
 2335         flags = (ifp->if_flags | ifp->if_drv_flags) & 0xffff;
 2336         /* these flags have no Linux equivalent */
 2337         flags &= ~(IFF_DRV_OACTIVE|IFF_SIMPLEX|
 2338             IFF_LINK0|IFF_LINK1|IFF_LINK2);
 2339         /* Linux' multicast flag is in a different bit */
 2340         if (flags & IFF_MULTICAST) {
 2341                 flags &= ~IFF_MULTICAST;
 2342                 flags |= 0x1000;
 2343         }
 2344 
 2345         return (copyout(&flags, &ifr->ifr_flags, sizeof(flags)));
 2346 }
 2347 
 2348 #define ARPHRD_ETHER    1
 2349 #define ARPHRD_LOOPBACK 772
 2350 
 2351 static int
 2352 linux_gifhwaddr(struct ifnet *ifp, struct l_ifreq *ifr)
 2353 {
 2354         struct ifaddr *ifa;
 2355         struct sockaddr_dl *sdl;
 2356         struct l_sockaddr lsa;
 2357 
 2358         if (ifp->if_type == IFT_LOOP) {
 2359                 bzero(&lsa, sizeof(lsa));
 2360                 lsa.sa_family = ARPHRD_LOOPBACK;
 2361                 return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof(lsa)));
 2362         }
 2363 
 2364         if (ifp->if_type != IFT_ETHER)
 2365                 return (ENOENT);
 2366 
 2367         CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2368                 sdl = (struct sockaddr_dl*)ifa->ifa_addr;
 2369                 if (sdl != NULL && (sdl->sdl_family == AF_LINK) &&
 2370                     (sdl->sdl_type == IFT_ETHER)) {
 2371                         bzero(&lsa, sizeof(lsa));
 2372                         lsa.sa_family = ARPHRD_ETHER;
 2373                         bcopy(LLADDR(sdl), lsa.sa_data, LINUX_IFHWADDRLEN);
 2374                         return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof(lsa)));
 2375                 }
 2376         }
 2377 
 2378         return (ENOENT);
 2379 }
 2380 
 2381 
 2382  /*
 2383 * If we fault in bsd_to_linux_ifreq() then we will fault when we call
 2384 * the native ioctl().  Thus, we don't really need to check the return
 2385 * value of this function.
 2386 */
 2387 static int
 2388 bsd_to_linux_ifreq(struct ifreq *arg)
 2389 {
 2390         struct ifreq ifr;
 2391         size_t ifr_len = sizeof(struct ifreq);
 2392         int error;
 2393 
 2394         if ((error = copyin(arg, &ifr, ifr_len)))
 2395                 return (error);
 2396 
 2397         *(u_short *)&ifr.ifr_addr = ifr.ifr_addr.sa_family;
 2398 
 2399         error = copyout(&ifr, arg, ifr_len);
 2400 
 2401         return (error);
 2402 }
 2403 
 2404 /*
 2405  * Socket related ioctls
 2406  */
 2407 
 2408 static int
 2409 linux_ioctl_socket(struct thread *td, struct linux_ioctl_args *args)
 2410 {
 2411         char lifname[LINUX_IFNAMSIZ], ifname[IFNAMSIZ];
 2412         struct ifnet *ifp;
 2413         struct file *fp;
 2414         int error, type;
 2415 
 2416         ifp = NULL;
 2417         error = 0;
 2418 
 2419         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 2420         if (error != 0)
 2421                 return (error);
 2422         type = fp->f_type;
 2423         fdrop(fp, td);
 2424         if (type != DTYPE_SOCKET) {
 2425                 /* not a socket - probably a tap / vmnet device */
 2426                 switch (args->cmd) {
 2427                 case LINUX_SIOCGIFADDR:
 2428                 case LINUX_SIOCSIFADDR:
 2429                 case LINUX_SIOCGIFFLAGS:
 2430                         return (linux_ioctl_special(td, args));
 2431                 default:
 2432                         return (ENOIOCTL);
 2433                 }
 2434         }
 2435 
 2436         switch (args->cmd & 0xffff) {
 2437 
 2438         case LINUX_FIOGETOWN:
 2439         case LINUX_FIOSETOWN:
 2440         case LINUX_SIOCADDMULTI:
 2441         case LINUX_SIOCATMARK:
 2442         case LINUX_SIOCDELMULTI:
 2443         case LINUX_SIOCGIFNAME:
 2444         case LINUX_SIOCGIFCONF:
 2445         case LINUX_SIOCGPGRP:
 2446         case LINUX_SIOCSPGRP:
 2447         case LINUX_SIOCGIFCOUNT:
 2448                 /* these ioctls don't take an interface name */
 2449 #ifdef DEBUG
 2450                 printf("%s(): ioctl %d\n", __func__,
 2451                     args->cmd & 0xffff);
 2452 #endif
 2453                 break;
 2454 
 2455         case LINUX_SIOCGIFFLAGS:
 2456         case LINUX_SIOCGIFADDR:
 2457         case LINUX_SIOCSIFADDR:
 2458         case LINUX_SIOCGIFDSTADDR:
 2459         case LINUX_SIOCGIFBRDADDR:
 2460         case LINUX_SIOCGIFNETMASK:
 2461         case LINUX_SIOCSIFNETMASK:
 2462         case LINUX_SIOCGIFMTU:
 2463         case LINUX_SIOCSIFMTU:
 2464         case LINUX_SIOCSIFNAME:
 2465         case LINUX_SIOCGIFHWADDR:
 2466         case LINUX_SIOCSIFHWADDR:
 2467         case LINUX_SIOCDEVPRIVATE:
 2468         case LINUX_SIOCDEVPRIVATE+1:
 2469         case LINUX_SIOCGIFINDEX:
 2470                 /* copy in the interface name and translate it. */
 2471                 error = copyin((void *)args->arg, lifname, LINUX_IFNAMSIZ);
 2472                 if (error != 0)
 2473                         return (error);
 2474 #ifdef DEBUG
 2475                 printf("%s(): ioctl %d on %.*s\n", __func__,
 2476                     args->cmd & 0xffff, LINUX_IFNAMSIZ, lifname);
 2477 #endif
 2478                 memset(ifname, 0, sizeof(ifname));
 2479                 ifp = ifname_linux_to_bsd(td, lifname, ifname);
 2480                 if (ifp == NULL)
 2481                         return (EINVAL);
 2482                 /*
 2483                  * We need to copy it back out in case we pass the
 2484                  * request on to our native ioctl(), which will expect
 2485                  * the ifreq to be in user space and have the correct
 2486                  * interface name.
 2487                  */
 2488                 error = copyout(ifname, (void *)args->arg, IFNAMSIZ);
 2489                 if (error != 0)
 2490                         return (error);
 2491 #ifdef DEBUG
 2492                 printf("%s(): %s translated to %s\n", __func__,
 2493                     lifname, ifname);
 2494 #endif
 2495                 break;
 2496 
 2497         default:
 2498                 return (ENOIOCTL);
 2499         }
 2500 
 2501         switch (args->cmd & 0xffff) {
 2502 
 2503         case LINUX_FIOSETOWN:
 2504                 args->cmd = FIOSETOWN;
 2505                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2506                 break;
 2507 
 2508         case LINUX_SIOCSPGRP:
 2509                 args->cmd = SIOCSPGRP;
 2510                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2511                 break;
 2512 
 2513         case LINUX_FIOGETOWN:
 2514                 args->cmd = FIOGETOWN;
 2515                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2516                 break;
 2517 
 2518         case LINUX_SIOCGPGRP:
 2519                 args->cmd = SIOCGPGRP;
 2520                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2521                 break;
 2522 
 2523         case LINUX_SIOCATMARK:
 2524                 args->cmd = SIOCATMARK;
 2525                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2526                 break;
 2527 
 2528         /* LINUX_SIOCGSTAMP */
 2529 
 2530         case LINUX_SIOCGIFNAME:
 2531                 error = linux_ioctl_ifname(td, (struct l_ifreq *)args->arg);
 2532                 break;
 2533 
 2534         case LINUX_SIOCGIFCONF:
 2535                 error = linux_ifconf(td, (struct ifconf *)args->arg);
 2536                 break;
 2537 
 2538         case LINUX_SIOCGIFFLAGS:
 2539                 args->cmd = SIOCGIFFLAGS;
 2540                 error = linux_gifflags(td, ifp, (struct l_ifreq *)args->arg);
 2541                 break;
 2542 
 2543         case LINUX_SIOCGIFADDR:
 2544                 args->cmd = SIOCGIFADDR;
 2545                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2546                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2547                 break;
 2548 
 2549         case LINUX_SIOCSIFADDR:
 2550                 /* XXX probably doesn't work, included for completeness */
 2551                 args->cmd = SIOCSIFADDR;
 2552                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2553                 break;
 2554 
 2555         case LINUX_SIOCGIFDSTADDR:
 2556                 args->cmd = SIOCGIFDSTADDR;
 2557                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2558                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2559                 break;
 2560 
 2561         case LINUX_SIOCGIFBRDADDR:
 2562                 args->cmd = SIOCGIFBRDADDR;
 2563                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2564                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2565                 break;
 2566 
 2567         case LINUX_SIOCGIFNETMASK:
 2568                 args->cmd = SIOCGIFNETMASK;
 2569                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2570                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2571                 break;
 2572 
 2573         case LINUX_SIOCSIFNETMASK:
 2574                 error = ENOIOCTL;
 2575                 break;
 2576 
 2577         case LINUX_SIOCGIFMTU:
 2578                 args->cmd = SIOCGIFMTU;
 2579                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2580                 break;
 2581 
 2582         case LINUX_SIOCSIFMTU:
 2583                 args->cmd = SIOCSIFMTU;
 2584                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2585                 break;
 2586 
 2587         case LINUX_SIOCSIFNAME:
 2588                 error = ENOIOCTL;
 2589                 break;
 2590 
 2591         case LINUX_SIOCGIFHWADDR:
 2592                 error = linux_gifhwaddr(ifp, (struct l_ifreq *)args->arg);
 2593                 break;
 2594 
 2595         case LINUX_SIOCSIFHWADDR:
 2596                 error = ENOIOCTL;
 2597                 break;
 2598 
 2599         case LINUX_SIOCADDMULTI:
 2600                 args->cmd = SIOCADDMULTI;
 2601                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2602                 break;
 2603 
 2604         case LINUX_SIOCDELMULTI:
 2605                 args->cmd = SIOCDELMULTI;
 2606                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2607                 break;
 2608 
 2609         case LINUX_SIOCGIFINDEX:
 2610                 args->cmd = SIOCGIFINDEX;
 2611                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2612                 break;
 2613 
 2614         case LINUX_SIOCGIFCOUNT:
 2615                 error = 0;
 2616                 break;
 2617 
 2618         /*
 2619          * XXX This is slightly bogus, but these ioctls are currently
 2620          * XXX only used by the aironet (if_an) network driver.
 2621          */
 2622         case LINUX_SIOCDEVPRIVATE:
 2623                 args->cmd = SIOCGPRIVATE_0;
 2624                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2625                 break;
 2626 
 2627         case LINUX_SIOCDEVPRIVATE+1:
 2628                 args->cmd = SIOCGPRIVATE_1;
 2629                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2630                 break;
 2631         }
 2632 
 2633         if (ifp != NULL)
 2634                 /* restore the original interface name */
 2635                 copyout(lifname, (void *)args->arg, LINUX_IFNAMSIZ);
 2636 
 2637 #ifdef DEBUG
 2638         printf("%s(): returning %d\n", __func__, error);
 2639 #endif
 2640         return (error);
 2641 }
 2642 
 2643 /*
 2644  * Device private ioctl handler
 2645  */
 2646 static int
 2647 linux_ioctl_private(struct thread *td, struct linux_ioctl_args *args)
 2648 {
 2649         struct file *fp;
 2650         int error, type;
 2651 
 2652         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 2653         if (error != 0)
 2654                 return (error);
 2655         type = fp->f_type;
 2656         fdrop(fp, td);
 2657         if (type == DTYPE_SOCKET)
 2658                 return (linux_ioctl_socket(td, args));
 2659         return (ENOIOCTL);
 2660 }
 2661 
 2662 /*
 2663  * DRM ioctl handler (sys/dev/drm)
 2664  */
 2665 static int
 2666 linux_ioctl_drm(struct thread *td, struct linux_ioctl_args *args)
 2667 {
 2668         args->cmd = SETDIR(args->cmd);
 2669         return (sys_ioctl(td, (struct ioctl_args *)args));
 2670 }
 2671 
 2672 #ifdef COMPAT_LINUX32
 2673 #define CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0)
 2674 #define PTRIN_CP(src,dst,fld) \
 2675         do { (dst).fld = PTRIN((src).fld); } while (0)
 2676 #define PTROUT_CP(src,dst,fld) \
 2677         do { (dst).fld = PTROUT((src).fld); } while (0)
 2678 
 2679 static int
 2680 linux_ioctl_sg_io(struct thread *td, struct linux_ioctl_args *args)
 2681 {
 2682         struct sg_io_hdr io;
 2683         struct sg_io_hdr32 io32;
 2684         struct file *fp;
 2685         int error;
 2686 
 2687         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 2688         if (error != 0) {
 2689                 printf("sg_linux_ioctl: fget returned %d\n", error);
 2690                 return (error);
 2691         }
 2692 
 2693         if ((error = copyin((void *)args->arg, &io32, sizeof(io32))) != 0)
 2694                 goto out;
 2695 
 2696         CP(io32, io, interface_id);
 2697         CP(io32, io, dxfer_direction);
 2698         CP(io32, io, cmd_len);
 2699         CP(io32, io, mx_sb_len);
 2700         CP(io32, io, iovec_count);
 2701         CP(io32, io, dxfer_len);
 2702         PTRIN_CP(io32, io, dxferp);
 2703         PTRIN_CP(io32, io, cmdp);
 2704         PTRIN_CP(io32, io, sbp);
 2705         CP(io32, io, timeout);
 2706         CP(io32, io, flags);
 2707         CP(io32, io, pack_id);
 2708         PTRIN_CP(io32, io, usr_ptr);
 2709         CP(io32, io, status);
 2710         CP(io32, io, masked_status);
 2711         CP(io32, io, msg_status);
 2712         CP(io32, io, sb_len_wr);
 2713         CP(io32, io, host_status);
 2714         CP(io32, io, driver_status);
 2715         CP(io32, io, resid);
 2716         CP(io32, io, duration);
 2717         CP(io32, io, info);
 2718 
 2719         if ((error = fo_ioctl(fp, SG_IO, (caddr_t)&io, td->td_ucred, td)) != 0)
 2720                 goto out;
 2721 
 2722         CP(io, io32, interface_id);
 2723         CP(io, io32, dxfer_direction);
 2724         CP(io, io32, cmd_len);
 2725         CP(io, io32, mx_sb_len);
 2726         CP(io, io32, iovec_count);
 2727         CP(io, io32, dxfer_len);
 2728         PTROUT_CP(io, io32, dxferp);
 2729         PTROUT_CP(io, io32, cmdp);
 2730         PTROUT_CP(io, io32, sbp);
 2731         CP(io, io32, timeout);
 2732         CP(io, io32, flags);
 2733         CP(io, io32, pack_id);
 2734         PTROUT_CP(io, io32, usr_ptr);
 2735         CP(io, io32, status);
 2736         CP(io, io32, masked_status);
 2737         CP(io, io32, msg_status);
 2738         CP(io, io32, sb_len_wr);
 2739         CP(io, io32, host_status);
 2740         CP(io, io32, driver_status);
 2741         CP(io, io32, resid);
 2742         CP(io, io32, duration);
 2743         CP(io, io32, info);
 2744 
 2745         error = copyout(&io32, (void *)args->arg, sizeof(io32));
 2746 
 2747 out:
 2748         fdrop(fp, td);
 2749         return (error);
 2750 }
 2751 #endif
 2752 
 2753 static int
 2754 linux_ioctl_sg(struct thread *td, struct linux_ioctl_args *args)
 2755 {
 2756 
 2757         switch (args->cmd) {
 2758         case LINUX_SG_GET_VERSION_NUM:
 2759                 args->cmd = SG_GET_VERSION_NUM;
 2760                 break;
 2761         case LINUX_SG_SET_TIMEOUT:
 2762                 args->cmd = SG_SET_TIMEOUT;
 2763                 break;
 2764         case LINUX_SG_GET_TIMEOUT:
 2765                 args->cmd = SG_GET_TIMEOUT;
 2766                 break;
 2767         case LINUX_SG_IO:
 2768                 args->cmd = SG_IO;
 2769 #ifdef COMPAT_LINUX32
 2770                 return (linux_ioctl_sg_io(td, args));
 2771 #endif
 2772                 break;
 2773         case LINUX_SG_GET_RESERVED_SIZE:
 2774                 args->cmd = SG_GET_RESERVED_SIZE;
 2775                 break;
 2776         case LINUX_SG_GET_SCSI_ID:
 2777                 args->cmd = SG_GET_SCSI_ID;
 2778                 break;
 2779         case LINUX_SG_GET_SG_TABLESIZE:
 2780                 args->cmd = SG_GET_SG_TABLESIZE;
 2781                 break;
 2782         default:
 2783                 return (ENODEV);
 2784         }
 2785         return (sys_ioctl(td, (struct ioctl_args *)args));
 2786 }
 2787 
 2788 /*
 2789  * Video4Linux (V4L) ioctl handler
 2790  */
 2791 static int
 2792 linux_to_bsd_v4l_tuner(struct l_video_tuner *lvt, struct video_tuner *vt)
 2793 {
 2794         vt->tuner = lvt->tuner;
 2795         strlcpy(vt->name, lvt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
 2796         vt->rangelow = lvt->rangelow;   /* possible long size conversion */
 2797         vt->rangehigh = lvt->rangehigh; /* possible long size conversion */
 2798         vt->flags = lvt->flags;
 2799         vt->mode = lvt->mode;
 2800         vt->signal = lvt->signal;
 2801         return (0);
 2802 }
 2803 
 2804 static int
 2805 bsd_to_linux_v4l_tuner(struct video_tuner *vt, struct l_video_tuner *lvt)
 2806 {
 2807         lvt->tuner = vt->tuner;
 2808         strlcpy(lvt->name, vt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
 2809         lvt->rangelow = vt->rangelow;   /* possible long size conversion */
 2810         lvt->rangehigh = vt->rangehigh; /* possible long size conversion */
 2811         lvt->flags = vt->flags;
 2812         lvt->mode = vt->mode;
 2813         lvt->signal = vt->signal;
 2814         return (0);
 2815 }
 2816 
 2817 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2818 static int
 2819 linux_to_bsd_v4l_clip(struct l_video_clip *lvc, struct video_clip *vc)
 2820 {
 2821         vc->x = lvc->x;
 2822         vc->y = lvc->y;
 2823         vc->width = lvc->width;
 2824         vc->height = lvc->height;
 2825         vc->next = PTRIN(lvc->next);    /* possible pointer size conversion */
 2826         return (0);
 2827 }
 2828 #endif
 2829 
 2830 static int
 2831 linux_to_bsd_v4l_window(struct l_video_window *lvw, struct video_window *vw)
 2832 {
 2833         vw->x = lvw->x;
 2834         vw->y = lvw->y;
 2835         vw->width = lvw->width;
 2836         vw->height = lvw->height;
 2837         vw->chromakey = lvw->chromakey;
 2838         vw->flags = lvw->flags;
 2839         vw->clips = PTRIN(lvw->clips);  /* possible pointer size conversion */
 2840         vw->clipcount = lvw->clipcount;
 2841         return (0);
 2842 }
 2843 
 2844 static int
 2845 bsd_to_linux_v4l_window(struct video_window *vw, struct l_video_window *lvw)
 2846 {
 2847         memset(lvw, 0, sizeof(*lvw));
 2848 
 2849         lvw->x = vw->x;
 2850         lvw->y = vw->y;
 2851         lvw->width = vw->width;
 2852         lvw->height = vw->height;
 2853         lvw->chromakey = vw->chromakey;
 2854         lvw->flags = vw->flags;
 2855         lvw->clips = PTROUT(vw->clips); /* possible pointer size conversion */
 2856         lvw->clipcount = vw->clipcount;
 2857         return (0);
 2858 }
 2859 
 2860 static int
 2861 linux_to_bsd_v4l_buffer(struct l_video_buffer *lvb, struct video_buffer *vb)
 2862 {
 2863         vb->base = PTRIN(lvb->base);    /* possible pointer size conversion */
 2864         vb->height = lvb->height;
 2865         vb->width = lvb->width;
 2866         vb->depth = lvb->depth;
 2867         vb->bytesperline = lvb->bytesperline;
 2868         return (0);
 2869 }
 2870 
 2871 static int
 2872 bsd_to_linux_v4l_buffer(struct video_buffer *vb, struct l_video_buffer *lvb)
 2873 {
 2874         lvb->base = PTROUT(vb->base);   /* possible pointer size conversion */
 2875         lvb->height = vb->height;
 2876         lvb->width = vb->width;
 2877         lvb->depth = vb->depth;
 2878         lvb->bytesperline = vb->bytesperline;
 2879         return (0);
 2880 }
 2881 
 2882 static int
 2883 linux_to_bsd_v4l_code(struct l_video_code *lvc, struct video_code *vc)
 2884 {
 2885         strlcpy(vc->loadwhat, lvc->loadwhat, LINUX_VIDEO_CODE_LOADWHAT_SIZE);
 2886         vc->datasize = lvc->datasize;
 2887         vc->data = PTRIN(lvc->data);    /* possible pointer size conversion */
 2888         return (0);
 2889 }
 2890 
 2891 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2892 static int
 2893 linux_v4l_clip_copy(void *lvc, struct video_clip **ppvc)
 2894 {
 2895         int error;
 2896         struct video_clip vclip;
 2897         struct l_video_clip l_vclip;
 2898 
 2899         error = copyin(lvc, &l_vclip, sizeof(l_vclip));
 2900         if (error) return (error);
 2901         linux_to_bsd_v4l_clip(&l_vclip, &vclip);
 2902         /* XXX: If there can be no concurrency: s/M_NOWAIT/M_WAITOK/ */
 2903         if ((*ppvc = malloc(sizeof(**ppvc), M_LINUX, M_NOWAIT)) == NULL)
 2904                 return (ENOMEM);    /* XXX: Linux has no ENOMEM here. */
 2905         memcpy(*ppvc, &vclip, sizeof(vclip));
 2906         (*ppvc)->next = NULL;
 2907         return (0);
 2908 }
 2909 
 2910 static int
 2911 linux_v4l_cliplist_free(struct video_window *vw)
 2912 {
 2913         struct video_clip **ppvc;
 2914         struct video_clip **ppvc_next;
 2915 
 2916         for (ppvc = &(vw->clips); *ppvc != NULL; ppvc = ppvc_next) {
 2917                 ppvc_next = &((*ppvc)->next);
 2918                 free(*ppvc, M_LINUX);
 2919         }
 2920         vw->clips = NULL;
 2921 
 2922         return (0);
 2923 }
 2924 
 2925 static int
 2926 linux_v4l_cliplist_copy(struct l_video_window *lvw, struct video_window *vw)
 2927 {
 2928         int error;
 2929         int clipcount;
 2930         void *plvc;
 2931         struct video_clip **ppvc;
 2932 
 2933         /*
 2934          * XXX: The cliplist is used to pass in a list of clipping
 2935          *      rectangles or, if clipcount == VIDEO_CLIP_BITMAP, a
 2936          *      clipping bitmap.  Some Linux apps, however, appear to
 2937          *      leave cliplist and clips uninitialized.  In any case,
 2938          *      the cliplist is not used by pwc(4), at the time of
 2939          *      writing, FreeBSD's only V4L driver.  When a driver
 2940          *      that uses the cliplist is developed, this code may
 2941          *      need re-examiniation.
 2942          */
 2943         error = 0;
 2944         clipcount = vw->clipcount;
 2945         if (clipcount == VIDEO_CLIP_BITMAP) {
 2946                 /*
 2947                  * In this case, the pointer (clips) is overloaded
 2948                  * to be a "void *" to a bitmap, therefore there
 2949                  * is no struct video_clip to copy now.
 2950                  */
 2951         } else if (clipcount > 0 && clipcount <= 16384) {
 2952                 /*
 2953                  * Clips points to list of clip rectangles, so
 2954                  * copy the list.
 2955                  *
 2956                  * XXX: Upper limit of 16384 was used here to try to
 2957                  *      avoid cases when clipcount and clips pointer
 2958                  *      are uninitialized and therefore have high random
 2959                  *      values, as is the case in the Linux Skype
 2960                  *      application.  The value 16384 was chosen as that
 2961                  *      is what is used in the Linux stradis(4) MPEG
 2962                  *      decoder driver, the only place we found an
 2963                  *      example of cliplist use.
 2964                  */
 2965                 plvc = PTRIN(lvw->clips);
 2966                 vw->clips = NULL;
 2967                 ppvc = &(vw->clips);
 2968                 while (clipcount-- > 0) {
 2969                         if (plvc == NULL) {
 2970                                 error = EFAULT;
 2971                                 break;
 2972                         } else {
 2973                                 error = linux_v4l_clip_copy(plvc, ppvc);
 2974                                 if (error) {
 2975                                         linux_v4l_cliplist_free(vw);
 2976                                         break;
 2977                                 }
 2978                         }
 2979                         ppvc = &((*ppvc)->next);
 2980                         plvc = PTRIN(((struct l_video_clip *) plvc)->next);
 2981                 }
 2982         } else {
 2983                 /*
 2984                  * clipcount == 0 or negative (but not VIDEO_CLIP_BITMAP)
 2985                  * Force cliplist to null.
 2986                  */
 2987                 vw->clipcount = 0;
 2988                 vw->clips = NULL;
 2989         }
 2990         return (error);
 2991 }
 2992 #endif
 2993 
 2994 static int
 2995 linux_ioctl_v4l(struct thread *td, struct linux_ioctl_args *args)
 2996 {
 2997         struct file *fp;
 2998         int error;
 2999         struct video_tuner vtun;
 3000         struct video_window vwin;
 3001         struct video_buffer vbuf;
 3002         struct video_code vcode;
 3003         struct l_video_tuner l_vtun;
 3004         struct l_video_window l_vwin;
 3005         struct l_video_buffer l_vbuf;
 3006         struct l_video_code l_vcode;
 3007 
 3008         switch (args->cmd & 0xffff) {
 3009         case LINUX_VIDIOCGCAP:          args->cmd = VIDIOCGCAP; break;
 3010         case LINUX_VIDIOCGCHAN:         args->cmd = VIDIOCGCHAN; break;
 3011         case LINUX_VIDIOCSCHAN:         args->cmd = VIDIOCSCHAN; break;
 3012 
 3013         case LINUX_VIDIOCGTUNER:
 3014                 error = fget(td, args->fd,
 3015                     &cap_ioctl_rights, &fp);
 3016                 if (error != 0)
 3017                         return (error);
 3018                 error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
 3019                 if (error) {
 3020                         fdrop(fp, td);
 3021                         return (error);
 3022                 }
 3023                 linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
 3024                 error = fo_ioctl(fp, VIDIOCGTUNER, &vtun, td->td_ucred, td);
 3025                 if (!error) {
 3026                         bsd_to_linux_v4l_tuner(&vtun, &l_vtun);
 3027                         error = copyout(&l_vtun, (void *) args->arg,
 3028                             sizeof(l_vtun));
 3029                 }
 3030                 fdrop(fp, td);
 3031                 return (error);
 3032 
 3033         case LINUX_VIDIOCSTUNER:
 3034                 error = fget(td, args->fd,
 3035                     &cap_ioctl_rights, &fp);
 3036                 if (error != 0)
 3037                         return (error);
 3038                 error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
 3039                 if (error) {
 3040                         fdrop(fp, td);
 3041                         return (error);
 3042                 }
 3043                 linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
 3044                 error = fo_ioctl(fp, VIDIOCSTUNER, &vtun, td->td_ucred, td);
 3045                 fdrop(fp, td);
 3046                 return (error);
 3047 
 3048         case LINUX_VIDIOCGPICT:         args->cmd = VIDIOCGPICT; break;
 3049         case LINUX_VIDIOCSPICT:         args->cmd = VIDIOCSPICT; break;
 3050         case LINUX_VIDIOCCAPTURE:       args->cmd = VIDIOCCAPTURE; break;
 3051 
 3052         case LINUX_VIDIOCGWIN:
 3053                 error = fget(td, args->fd,
 3054                     &cap_ioctl_rights, &fp);
 3055                 if (error != 0)
 3056                         return (error);
 3057                 error = fo_ioctl(fp, VIDIOCGWIN, &vwin, td->td_ucred, td);
 3058                 if (!error) {
 3059                         bsd_to_linux_v4l_window(&vwin, &l_vwin);
 3060                         error = copyout(&l_vwin, (void *) args->arg,
 3061                             sizeof(l_vwin));
 3062                 }
 3063                 fdrop(fp, td);
 3064                 return (error);
 3065 
 3066         case LINUX_VIDIOCSWIN:
 3067                 error = fget(td, args->fd,
 3068                     &cap_ioctl_rights, &fp);
 3069                 if (error != 0)
 3070                         return (error);
 3071                 error = copyin((void *) args->arg, &l_vwin, sizeof(l_vwin));
 3072                 if (error) {
 3073                         fdrop(fp, td);
 3074                         return (error);
 3075                 }
 3076                 linux_to_bsd_v4l_window(&l_vwin, &vwin);
 3077 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 3078                 error = linux_v4l_cliplist_copy(&l_vwin, &vwin);
 3079                 if (error) {
 3080                         fdrop(fp, td);
 3081                         return (error);
 3082                 }
 3083 #endif
 3084                 error = fo_ioctl(fp, VIDIOCSWIN, &vwin, td->td_ucred, td);
 3085                 fdrop(fp, td);
 3086 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 3087                 linux_v4l_cliplist_free(&vwin);
 3088 #endif
 3089                 return (error);
 3090 
 3091         case LINUX_VIDIOCGFBUF:
 3092                 error = fget(td, args->fd,
 3093                     &cap_ioctl_rights, &fp);
 3094                 if (error != 0)
 3095                         return (error);
 3096                 error = fo_ioctl(fp, VIDIOCGFBUF, &vbuf, td->td_ucred, td);
 3097                 if (!error) {
 3098                         bsd_to_linux_v4l_buffer(&vbuf, &l_vbuf);
 3099                         error = copyout(&l_vbuf, (void *) args->arg,
 3100                             sizeof(l_vbuf));
 3101                 }
 3102                 fdrop(fp, td);
 3103                 return (error);
 3104 
 3105         case LINUX_VIDIOCSFBUF:
 3106                 error = fget(td, args->fd,
 3107                     &cap_ioctl_rights, &fp);
 3108                 if (error != 0)
 3109                         return (error);
 3110                 error = copyin((void *) args->arg, &l_vbuf, sizeof(l_vbuf));
 3111                 if (error) {
 3112                         fdrop(fp, td);
 3113                         return (error);
 3114                 }
 3115                 linux_to_bsd_v4l_buffer(&l_vbuf, &vbuf);
 3116                 error = fo_ioctl(fp, VIDIOCSFBUF, &vbuf, td->td_ucred, td);
 3117                 fdrop(fp, td);
 3118                 return (error);
 3119 
 3120         case LINUX_VIDIOCKEY:           args->cmd = VIDIOCKEY; break;
 3121         case LINUX_VIDIOCGFREQ:         args->cmd = VIDIOCGFREQ; break;
 3122         case LINUX_VIDIOCSFREQ:         args->cmd = VIDIOCSFREQ; break;
 3123         case LINUX_VIDIOCGAUDIO:        args->cmd = VIDIOCGAUDIO; break;
 3124         case LINUX_VIDIOCSAUDIO:        args->cmd = VIDIOCSAUDIO; break;
 3125         case LINUX_VIDIOCSYNC:          args->cmd = VIDIOCSYNC; break;
 3126         case LINUX_VIDIOCMCAPTURE:      args->cmd = VIDIOCMCAPTURE; break;
 3127         case LINUX_VIDIOCGMBUF:         args->cmd = VIDIOCGMBUF; break;
 3128         case LINUX_VIDIOCGUNIT:         args->cmd = VIDIOCGUNIT; break;
 3129         case LINUX_VIDIOCGCAPTURE:      args->cmd = VIDIOCGCAPTURE; break;
 3130         case LINUX_VIDIOCSCAPTURE:      args->cmd = VIDIOCSCAPTURE; break;
 3131         case LINUX_VIDIOCSPLAYMODE:     args->cmd = VIDIOCSPLAYMODE; break;
 3132         case LINUX_VIDIOCSWRITEMODE:    args->cmd = VIDIOCSWRITEMODE; break;
 3133         case LINUX_VIDIOCGPLAYINFO:     args->cmd = VIDIOCGPLAYINFO; break;
 3134 
 3135         case LINUX_VIDIOCSMICROCODE:
 3136                 error = fget(td, args->fd,
 3137                     &cap_ioctl_rights, &fp);
 3138                 if (error != 0)
 3139                         return (error);
 3140                 error = copyin((void *) args->arg, &l_vcode, sizeof(l_vcode));
 3141                 if (error) {
 3142                         fdrop(fp, td);
 3143                         return (error);
 3144                 }
 3145                 linux_to_bsd_v4l_code(&l_vcode, &vcode);
 3146                 error = fo_ioctl(fp, VIDIOCSMICROCODE, &vcode, td->td_ucred, td);
 3147                 fdrop(fp, td);
 3148                 return (error);
 3149 
 3150         case LINUX_VIDIOCGVBIFMT:       args->cmd = VIDIOCGVBIFMT; break;
 3151         case LINUX_VIDIOCSVBIFMT:       args->cmd = VIDIOCSVBIFMT; break;
 3152         default:                        return (ENOIOCTL);
 3153         }
 3154 
 3155         error = sys_ioctl(td, (struct ioctl_args *)args);
 3156         return (error);
 3157 }
 3158 
 3159 /*
 3160  * Special ioctl handler
 3161  */
 3162 static int
 3163 linux_ioctl_special(struct thread *td, struct linux_ioctl_args *args)
 3164 {
 3165         int error;
 3166 
 3167         switch (args->cmd) {
 3168         case LINUX_SIOCGIFADDR:
 3169                 args->cmd = SIOCGIFADDR;
 3170                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3171                 break;
 3172         case LINUX_SIOCSIFADDR:
 3173                 args->cmd = SIOCSIFADDR;
 3174                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3175                 break;
 3176         case LINUX_SIOCGIFFLAGS:
 3177                 args->cmd = SIOCGIFFLAGS;
 3178                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3179                 break;
 3180         default:
 3181                 error = ENOIOCTL;
 3182         }
 3183 
 3184         return (error);
 3185 }
 3186 
 3187 static int
 3188 linux_to_bsd_v4l2_standard(struct l_v4l2_standard *lvstd, struct v4l2_standard *vstd)
 3189 {
 3190         vstd->index = lvstd->index;
 3191         vstd->id = lvstd->id;
 3192         CTASSERT(sizeof(vstd->name) == sizeof(lvstd->name));
 3193         memcpy(vstd->name, lvstd->name, sizeof(vstd->name));
 3194         vstd->frameperiod = lvstd->frameperiod;
 3195         vstd->framelines = lvstd->framelines;
 3196         CTASSERT(sizeof(vstd->reserved) == sizeof(lvstd->reserved));
 3197         memcpy(vstd->reserved, lvstd->reserved, sizeof(vstd->reserved));
 3198         return (0);
 3199 }
 3200 
 3201 static int
 3202 bsd_to_linux_v4l2_standard(struct v4l2_standard *vstd, struct l_v4l2_standard *lvstd)
 3203 {
 3204         lvstd->index = vstd->index;
 3205         lvstd->id = vstd->id;
 3206         CTASSERT(sizeof(vstd->name) == sizeof(lvstd->name));
 3207         memcpy(lvstd->name, vstd->name, sizeof(lvstd->name));
 3208         lvstd->frameperiod = vstd->frameperiod;
 3209         lvstd->framelines = vstd->framelines;
 3210         CTASSERT(sizeof(vstd->reserved) == sizeof(lvstd->reserved));
 3211         memcpy(lvstd->reserved, vstd->reserved, sizeof(lvstd->reserved));
 3212         return (0);
 3213 }
 3214 
 3215 static int
 3216 linux_to_bsd_v4l2_buffer(struct l_v4l2_buffer *lvb, struct v4l2_buffer *vb)
 3217 {
 3218         vb->index = lvb->index;
 3219         vb->type = lvb->type;
 3220         vb->bytesused = lvb->bytesused;
 3221         vb->flags = lvb->flags;
 3222         vb->field = lvb->field;
 3223         vb->timestamp.tv_sec = lvb->timestamp.tv_sec;
 3224         vb->timestamp.tv_usec = lvb->timestamp.tv_usec;
 3225         memcpy(&vb->timecode, &lvb->timecode, sizeof (lvb->timecode));
 3226         vb->sequence = lvb->sequence;
 3227         vb->memory = lvb->memory;
 3228         if (lvb->memory == V4L2_MEMORY_USERPTR)
 3229                 /* possible pointer size conversion */
 3230                 vb->m.userptr = (unsigned long)PTRIN(lvb->m.userptr);
 3231         else
 3232                 vb->m.offset = lvb->m.offset;
 3233         vb->length = lvb->length;
 3234         vb->input = lvb->input;
 3235         vb->reserved = lvb->reserved;
 3236         return (0);
 3237 }
 3238 
 3239 static int
 3240 bsd_to_linux_v4l2_buffer(struct v4l2_buffer *vb, struct l_v4l2_buffer *lvb)
 3241 {
 3242         lvb->index = vb->index;
 3243         lvb->type = vb->type;
 3244         lvb->bytesused = vb->bytesused;
 3245         lvb->flags = vb->flags;
 3246         lvb->field = vb->field;
 3247         lvb->timestamp.tv_sec = vb->timestamp.tv_sec;
 3248         lvb->timestamp.tv_usec = vb->timestamp.tv_usec;
 3249         memcpy(&lvb->timecode, &vb->timecode, sizeof (vb->timecode));
 3250         lvb->sequence = vb->sequence;
 3251         lvb->memory = vb->memory;
 3252         if (vb->memory == V4L2_MEMORY_USERPTR)
 3253                 /* possible pointer size conversion */
 3254                 lvb->m.userptr = PTROUT(vb->m.userptr);
 3255         else
 3256                 lvb->m.offset = vb->m.offset;
 3257         lvb->length = vb->length;
 3258         lvb->input = vb->input;
 3259         lvb->reserved = vb->reserved;
 3260         return (0);
 3261 }
 3262 
 3263 static int
 3264 linux_to_bsd_v4l2_format(struct l_v4l2_format *lvf, struct v4l2_format *vf)
 3265 {
 3266         vf->type = lvf->type;
 3267         if (lvf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
 3268 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3269             || lvf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3270 #endif
 3271             )
 3272                 /*
 3273                  * XXX TODO - needs 32 -> 64 bit conversion:
 3274                  * (unused by webcams?)
 3275                  */
 3276                 return (EINVAL);
 3277         memcpy(&vf->fmt, &lvf->fmt, sizeof(vf->fmt));
 3278         return (0);
 3279 }
 3280 
 3281 static int
 3282 bsd_to_linux_v4l2_format(struct v4l2_format *vf, struct l_v4l2_format *lvf)
 3283 {
 3284         lvf->type = vf->type;
 3285         if (vf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
 3286 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3287             || vf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3288 #endif
 3289             )
 3290                 /*
 3291                  * XXX TODO - needs 32 -> 64 bit conversion:
 3292                  * (unused by webcams?)
 3293                  */
 3294                 return (EINVAL);
 3295         memcpy(&lvf->fmt, &vf->fmt, sizeof(vf->fmt));
 3296         return (0);
 3297 }
 3298 static int
 3299 linux_ioctl_v4l2(struct thread *td, struct linux_ioctl_args *args)
 3300 {
 3301         struct file *fp;
 3302         int error;
 3303         struct v4l2_format vformat;
 3304         struct l_v4l2_format l_vformat;
 3305         struct v4l2_standard vstd;
 3306         struct l_v4l2_standard l_vstd;
 3307         struct l_v4l2_buffer l_vbuf;
 3308         struct v4l2_buffer vbuf;
 3309         struct v4l2_input vinp;
 3310 
 3311         switch (args->cmd & 0xffff) {
 3312         case LINUX_VIDIOC_RESERVED:
 3313         case LINUX_VIDIOC_LOG_STATUS:
 3314                 if ((args->cmd & IOC_DIRMASK) != LINUX_IOC_VOID)
 3315                         return (ENOIOCTL);
 3316                 args->cmd = (args->cmd & 0xffff) | IOC_VOID;
 3317                 break;
 3318 
 3319         case LINUX_VIDIOC_OVERLAY:
 3320         case LINUX_VIDIOC_STREAMON:
 3321         case LINUX_VIDIOC_STREAMOFF:
 3322         case LINUX_VIDIOC_S_STD:
 3323         case LINUX_VIDIOC_S_TUNER:
 3324         case LINUX_VIDIOC_S_AUDIO:
 3325         case LINUX_VIDIOC_S_AUDOUT:
 3326         case LINUX_VIDIOC_S_MODULATOR:
 3327         case LINUX_VIDIOC_S_FREQUENCY:
 3328         case LINUX_VIDIOC_S_CROP:
 3329         case LINUX_VIDIOC_S_JPEGCOMP:
 3330         case LINUX_VIDIOC_S_PRIORITY:
 3331         case LINUX_VIDIOC_DBG_S_REGISTER:
 3332         case LINUX_VIDIOC_S_HW_FREQ_SEEK:
 3333         case LINUX_VIDIOC_SUBSCRIBE_EVENT:
 3334         case LINUX_VIDIOC_UNSUBSCRIBE_EVENT:
 3335                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_IN;
 3336                 break;
 3337 
 3338         case LINUX_VIDIOC_QUERYCAP:
 3339         case LINUX_VIDIOC_G_STD:
 3340         case LINUX_VIDIOC_G_AUDIO:
 3341         case LINUX_VIDIOC_G_INPUT:
 3342         case LINUX_VIDIOC_G_OUTPUT:
 3343         case LINUX_VIDIOC_G_AUDOUT:
 3344         case LINUX_VIDIOC_G_JPEGCOMP:
 3345         case LINUX_VIDIOC_QUERYSTD:
 3346         case LINUX_VIDIOC_G_PRIORITY:
 3347         case LINUX_VIDIOC_QUERY_DV_PRESET:
 3348                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_OUT;
 3349                 break;
 3350 
 3351         case LINUX_VIDIOC_ENUM_FMT:
 3352         case LINUX_VIDIOC_REQBUFS:
 3353         case LINUX_VIDIOC_G_PARM:
 3354         case LINUX_VIDIOC_S_PARM:
 3355         case LINUX_VIDIOC_G_CTRL:
 3356         case LINUX_VIDIOC_S_CTRL:
 3357         case LINUX_VIDIOC_G_TUNER:
 3358         case LINUX_VIDIOC_QUERYCTRL:
 3359         case LINUX_VIDIOC_QUERYMENU:
 3360         case LINUX_VIDIOC_S_INPUT:
 3361         case LINUX_VIDIOC_S_OUTPUT:
 3362         case LINUX_VIDIOC_ENUMOUTPUT:
 3363         case LINUX_VIDIOC_G_MODULATOR:
 3364         case LINUX_VIDIOC_G_FREQUENCY:
 3365         case LINUX_VIDIOC_CROPCAP:
 3366         case LINUX_VIDIOC_G_CROP:
 3367         case LINUX_VIDIOC_ENUMAUDIO:
 3368         case LINUX_VIDIOC_ENUMAUDOUT:
 3369         case LINUX_VIDIOC_G_SLICED_VBI_CAP:
 3370 #ifdef VIDIOC_ENUM_FRAMESIZES
 3371         case LINUX_VIDIOC_ENUM_FRAMESIZES:
 3372         case LINUX_VIDIOC_ENUM_FRAMEINTERVALS:
 3373         case LINUX_VIDIOC_ENCODER_CMD:
 3374         case LINUX_VIDIOC_TRY_ENCODER_CMD:
 3375 #endif
 3376         case LINUX_VIDIOC_DBG_G_REGISTER:
 3377         case LINUX_VIDIOC_DBG_G_CHIP_IDENT:
 3378         case LINUX_VIDIOC_ENUM_DV_PRESETS:
 3379         case LINUX_VIDIOC_S_DV_PRESET:
 3380         case LINUX_VIDIOC_G_DV_PRESET:
 3381         case LINUX_VIDIOC_S_DV_TIMINGS:
 3382         case LINUX_VIDIOC_G_DV_TIMINGS:
 3383                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
 3384                 break;
 3385 
 3386         case LINUX_VIDIOC_G_FMT:
 3387         case LINUX_VIDIOC_S_FMT:
 3388         case LINUX_VIDIOC_TRY_FMT:
 3389                 error = copyin((void *)args->arg, &l_vformat, sizeof(l_vformat));
 3390                 if (error)
 3391                         return (error);
 3392                 error = fget(td, args->fd,
 3393                     &cap_ioctl_rights, &fp);
 3394                 if (error)
 3395                         return (error);
 3396                 if (linux_to_bsd_v4l2_format(&l_vformat, &vformat) != 0)
 3397                         error = EINVAL;
 3398                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_G_FMT)
 3399                         error = fo_ioctl(fp, VIDIOC_G_FMT, &vformat,
 3400                             td->td_ucred, td);
 3401                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_S_FMT)
 3402                         error = fo_ioctl(fp, VIDIOC_S_FMT, &vformat,
 3403                             td->td_ucred, td);
 3404                 else
 3405                         error = fo_ioctl(fp, VIDIOC_TRY_FMT, &vformat,
 3406                             td->td_ucred, td);
 3407                 bsd_to_linux_v4l2_format(&vformat, &l_vformat);
 3408                 copyout(&l_vformat, (void *)args->arg, sizeof(l_vformat));
 3409                 fdrop(fp, td);
 3410                 return (error);
 3411 
 3412         case LINUX_VIDIOC_ENUMSTD:
 3413                 error = copyin((void *)args->arg, &l_vstd, sizeof(l_vstd));
 3414                 if (error)
 3415                         return (error);
 3416                 linux_to_bsd_v4l2_standard(&l_vstd, &vstd);
 3417                 error = fget(td, args->fd,
 3418                     &cap_ioctl_rights, &fp);
 3419                 if (error)
 3420                         return (error);
 3421                 error = fo_ioctl(fp, VIDIOC_ENUMSTD, (caddr_t)&vstd,
 3422                     td->td_ucred, td);
 3423                 if (error) {
 3424                         fdrop(fp, td);
 3425                         return (error);
 3426                 }
 3427                 bsd_to_linux_v4l2_standard(&vstd, &l_vstd);
 3428                 error = copyout(&l_vstd, (void *)args->arg, sizeof(l_vstd));
 3429                 fdrop(fp, td);
 3430                 return (error);
 3431 
 3432         case LINUX_VIDIOC_ENUMINPUT:
 3433                 /*
 3434                  * The Linux struct l_v4l2_input differs only in size,
 3435                  * it has no padding at the end.
 3436                  */
 3437                 error = copyin((void *)args->arg, &vinp,
 3438                                 sizeof(struct l_v4l2_input));
 3439                 if (error != 0)
 3440                         return (error);
 3441                 error = fget(td, args->fd,
 3442                     &cap_ioctl_rights, &fp);
 3443                 if (error != 0)
 3444                         return (error);
 3445                 error = fo_ioctl(fp, VIDIOC_ENUMINPUT, (caddr_t)&vinp,
 3446                     td->td_ucred, td);
 3447                 if (error) {
 3448                         fdrop(fp, td);
 3449                         return (error);
 3450                 }
 3451                 error = copyout(&vinp, (void *)args->arg,
 3452                                 sizeof(struct l_v4l2_input));
 3453                 fdrop(fp, td);
 3454                 return (error);
 3455 
 3456         case LINUX_VIDIOC_QUERYBUF:
 3457         case LINUX_VIDIOC_QBUF:
 3458         case LINUX_VIDIOC_DQBUF:
 3459                 error = copyin((void *)args->arg, &l_vbuf, sizeof(l_vbuf));
 3460                 if (error)
 3461                         return (error);
 3462                 error = fget(td, args->fd,
 3463                     &cap_ioctl_rights, &fp);
 3464                 if (error)
 3465                         return (error);
 3466                 linux_to_bsd_v4l2_buffer(&l_vbuf, &vbuf);
 3467                 if ((args->cmd & 0xffff) == LINUX_VIDIOC_QUERYBUF)
 3468                         error = fo_ioctl(fp, VIDIOC_QUERYBUF, &vbuf,
 3469                             td->td_ucred, td);
 3470                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_QBUF)
 3471                         error = fo_ioctl(fp, VIDIOC_QBUF, &vbuf,
 3472                             td->td_ucred, td);
 3473                 else
 3474                         error = fo_ioctl(fp, VIDIOC_DQBUF, &vbuf,
 3475                             td->td_ucred, td);
 3476                 bsd_to_linux_v4l2_buffer(&vbuf, &l_vbuf);
 3477                 copyout(&l_vbuf, (void *)args->arg, sizeof(l_vbuf));
 3478                 fdrop(fp, td);
 3479                 return (error);
 3480 
 3481         /*
 3482          * XXX TODO - these need 32 -> 64 bit conversion:
 3483          * (are any of them needed for webcams?)
 3484          */
 3485         case LINUX_VIDIOC_G_FBUF:
 3486         case LINUX_VIDIOC_S_FBUF:
 3487 
 3488         case LINUX_VIDIOC_G_EXT_CTRLS:
 3489         case LINUX_VIDIOC_S_EXT_CTRLS:
 3490         case LINUX_VIDIOC_TRY_EXT_CTRLS:
 3491 
 3492         case LINUX_VIDIOC_DQEVENT:
 3493 
 3494         default:                        return (ENOIOCTL);
 3495         }
 3496 
 3497         error = sys_ioctl(td, (struct ioctl_args *)args);
 3498         return (error);
 3499 }
 3500 
 3501 /*
 3502  * Support for emulators/linux-libusb. This port uses FBSD_LUSB* macros
 3503  * instead of USB* ones. This lets us to provide correct values for cmd.
 3504  * 0xffffffe0 -- 0xffffffff range seemed to be the least collision-prone.
 3505  */
 3506 static int
 3507 linux_ioctl_fbsd_usb(struct thread *td, struct linux_ioctl_args *args)
 3508 {
 3509         int error;
 3510 
 3511         error = 0;
 3512         switch (args->cmd) {
 3513         case FBSD_LUSB_DEVICEENUMERATE:
 3514                 args->cmd = USB_DEVICEENUMERATE;
 3515                 break;
 3516         case FBSD_LUSB_DEV_QUIRK_ADD:
 3517                 args->cmd = USB_DEV_QUIRK_ADD;
 3518                 break;
 3519         case FBSD_LUSB_DEV_QUIRK_GET:
 3520                 args->cmd = USB_DEV_QUIRK_GET;
 3521                 break;
 3522         case FBSD_LUSB_DEV_QUIRK_REMOVE:
 3523                 args->cmd = USB_DEV_QUIRK_REMOVE;
 3524                 break;
 3525         case FBSD_LUSB_DO_REQUEST:
 3526                 args->cmd = USB_DO_REQUEST;
 3527                 break;
 3528         case FBSD_LUSB_FS_CLEAR_STALL_SYNC:
 3529                 args->cmd = USB_FS_CLEAR_STALL_SYNC;
 3530                 break;
 3531         case FBSD_LUSB_FS_CLOSE:
 3532                 args->cmd = USB_FS_CLOSE;
 3533                 break;
 3534         case FBSD_LUSB_FS_COMPLETE:
 3535                 args->cmd = USB_FS_COMPLETE;
 3536                 break;
 3537         case FBSD_LUSB_FS_INIT:
 3538                 args->cmd = USB_FS_INIT;
 3539                 break;
 3540         case FBSD_LUSB_FS_OPEN:
 3541                 args->cmd = USB_FS_OPEN;
 3542                 break;
 3543         case FBSD_LUSB_FS_START:
 3544                 args->cmd = USB_FS_START;
 3545                 break;
 3546         case FBSD_LUSB_FS_STOP:
 3547                 args->cmd = USB_FS_STOP;
 3548                 break;
 3549         case FBSD_LUSB_FS_UNINIT:
 3550                 args->cmd = USB_FS_UNINIT;
 3551                 break;
 3552         case FBSD_LUSB_GET_CONFIG:
 3553                 args->cmd = USB_GET_CONFIG;
 3554                 break;
 3555         case FBSD_LUSB_GET_DEVICEINFO:
 3556                 args->cmd = USB_GET_DEVICEINFO;
 3557                 break;
 3558         case FBSD_LUSB_GET_DEVICE_DESC:
 3559                 args->cmd = USB_GET_DEVICE_DESC;
 3560                 break;
 3561         case FBSD_LUSB_GET_FULL_DESC:
 3562                 args->cmd = USB_GET_FULL_DESC;
 3563                 break;
 3564         case FBSD_LUSB_GET_IFACE_DRIVER:
 3565                 args->cmd = USB_GET_IFACE_DRIVER;
 3566                 break;
 3567         case FBSD_LUSB_GET_PLUGTIME:
 3568                 args->cmd = USB_GET_PLUGTIME;
 3569                 break;
 3570         case FBSD_LUSB_GET_POWER_MODE:
 3571                 args->cmd = USB_GET_POWER_MODE;
 3572                 break;
 3573         case FBSD_LUSB_GET_REPORT_DESC:
 3574                 args->cmd = USB_GET_REPORT_DESC;
 3575                 break;
 3576         case FBSD_LUSB_GET_REPORT_ID:
 3577                 args->cmd = USB_GET_REPORT_ID;
 3578                 break;
 3579         case FBSD_LUSB_GET_TEMPLATE:
 3580                 args->cmd = USB_GET_TEMPLATE;
 3581                 break;
 3582         case FBSD_LUSB_IFACE_DRIVER_ACTIVE:
 3583                 args->cmd = USB_IFACE_DRIVER_ACTIVE;
 3584                 break;
 3585         case FBSD_LUSB_IFACE_DRIVER_DETACH:
 3586                 args->cmd = USB_IFACE_DRIVER_DETACH;
 3587                 break;
 3588         case FBSD_LUSB_QUIRK_NAME_GET:
 3589                 args->cmd = USB_QUIRK_NAME_GET;
 3590                 break;
 3591         case FBSD_LUSB_READ_DIR:
 3592                 args->cmd = USB_READ_DIR;
 3593                 break;
 3594         case FBSD_LUSB_SET_ALTINTERFACE:
 3595                 args->cmd = USB_SET_ALTINTERFACE;
 3596                 break;
 3597         case FBSD_LUSB_SET_CONFIG:
 3598                 args->cmd = USB_SET_CONFIG;
 3599                 break;
 3600         case FBSD_LUSB_SET_IMMED:
 3601                 args->cmd = USB_SET_IMMED;
 3602                 break;
 3603         case FBSD_LUSB_SET_POWER_MODE:
 3604                 args->cmd = USB_SET_POWER_MODE;
 3605                 break;
 3606         case FBSD_LUSB_SET_TEMPLATE:
 3607                 args->cmd = USB_SET_TEMPLATE;
 3608                 break;
 3609         case FBSD_LUSB_FS_OPEN_STREAM:
 3610                 args->cmd = USB_FS_OPEN_STREAM;
 3611                 break;
 3612         case FBSD_LUSB_GET_DEV_PORT_PATH:
 3613                 args->cmd = USB_GET_DEV_PORT_PATH;
 3614                 break;
 3615         case FBSD_LUSB_GET_POWER_USAGE:
 3616                 args->cmd = USB_GET_POWER_USAGE;
 3617                 break;
 3618         default:
 3619                 error = ENOIOCTL;
 3620         }
 3621         if (error != ENOIOCTL)
 3622                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3623         return (error);
 3624 }
 3625 
 3626 /*
 3627  * Some evdev ioctls must be translated.
 3628  *  - EVIOCGMTSLOTS is a IOC_READ ioctl on Linux although it has input data
 3629  *    (must be IOC_INOUT on FreeBSD).
 3630  *  - On Linux, EVIOCGRAB, EVIOCREVOKE and EVIOCRMFF are defined as _IOW with
 3631  *    an int argument. You don't pass an int pointer to the ioctl(), however,
 3632  *    but just the int directly. On FreeBSD, they are defined as _IOWINT for
 3633  *    this to work.
 3634  */
 3635 static int
 3636 linux_ioctl_evdev(struct thread *td, struct linux_ioctl_args *args)
 3637 {
 3638         struct file *fp;
 3639         clockid_t clock;
 3640         int error;
 3641 
 3642         args->cmd = SETDIR(args->cmd);
 3643 
 3644         switch (args->cmd) {
 3645         case (EVIOCGRAB & ~IOC_DIRMASK) | IOC_IN:
 3646                 args->cmd = EVIOCGRAB;
 3647                 break;
 3648         case (EVIOCREVOKE & ~IOC_DIRMASK) | IOC_IN:
 3649                 args->cmd = EVIOCREVOKE;
 3650                 break;
 3651         case (EVIOCRMFF & ~IOC_DIRMASK) | IOC_IN:
 3652                 args->cmd = EVIOCRMFF;
 3653                 break;
 3654         case EVIOCSCLOCKID: {
 3655                 error = copyin(PTRIN(args->arg), &clock, sizeof(clock));
 3656                 if (error != 0)
 3657                         return (error);
 3658                 if (clock & ~(LINUX_IOCTL_EVDEV_CLK))
 3659                         return (EINVAL);
 3660                 error = linux_to_native_clockid(&clock, clock);
 3661                 if (error != 0)
 3662                         return (error);
 3663 
 3664                 error = fget(td, args->fd,
 3665                     &cap_ioctl_rights, &fp);
 3666                 if (error != 0)
 3667                         return (error);
 3668 
 3669                 error = fo_ioctl(fp, EVIOCSCLOCKID, &clock, td->td_ucred, td);
 3670                 fdrop(fp, td);
 3671                 return (error);
 3672         }
 3673         default:
 3674                 break;
 3675         }
 3676 
 3677         if (IOCBASECMD(args->cmd) ==
 3678             ((EVIOCGMTSLOTS(0) & ~IOC_DIRMASK) | IOC_OUT))
 3679                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
 3680 
 3681         return (sys_ioctl(td, (struct ioctl_args *)args));
 3682 }
 3683 
 3684 /*
 3685  * main ioctl syscall function
 3686  */
 3687 
 3688 int
 3689 linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
 3690 {
 3691         struct file *fp;
 3692         struct linux_ioctl_handler_element *he;
 3693         int error, cmd;
 3694 
 3695 #ifdef DEBUG
 3696         if (ldebug(ioctl))
 3697                 printf(ARGS(ioctl, "%d, %04lx, *"), args->fd,
 3698                     (unsigned long)args->cmd);
 3699 #endif
 3700 
 3701         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 3702         if (error != 0)
 3703                 return (error);
 3704         if ((fp->f_flag & (FREAD|FWRITE)) == 0) {
 3705                 fdrop(fp, td);
 3706                 return (EBADF);
 3707         }
 3708 
 3709         /* Iterate over the ioctl handlers */
 3710         cmd = args->cmd & 0xffff;
 3711         sx_slock(&linux_ioctl_sx);
 3712         mtx_lock(&Giant);
 3713 #ifdef COMPAT_LINUX32
 3714         TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
 3715                 if (cmd >= he->low && cmd <= he->high) {
 3716                         error = (*he->func)(td, args);
 3717                         if (error != ENOIOCTL) {
 3718                                 mtx_unlock(&Giant);
 3719                                 sx_sunlock(&linux_ioctl_sx);
 3720                                 fdrop(fp, td);
 3721                                 return (error);
 3722                         }
 3723                 }
 3724         }
 3725 #endif
 3726         TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
 3727                 if (cmd >= he->low && cmd <= he->high) {
 3728                         error = (*he->func)(td, args);
 3729                         if (error != ENOIOCTL) {
 3730                                 mtx_unlock(&Giant);
 3731                                 sx_sunlock(&linux_ioctl_sx);
 3732                                 fdrop(fp, td);
 3733                                 return (error);
 3734                         }
 3735                 }
 3736         }
 3737         mtx_unlock(&Giant);
 3738         sx_sunlock(&linux_ioctl_sx);
 3739         fdrop(fp, td);
 3740 
 3741         switch (args->cmd & 0xffff) {
 3742         case LINUX_BTRFS_IOC_CLONE:
 3743                 return (ENOTSUP);
 3744 
 3745         default:
 3746                 linux_msg(td, "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
 3747                     args->fd, (int)(args->cmd & 0xffff),
 3748                     (int)(args->cmd & 0xff00) >> 8, (int)(args->cmd & 0xff));
 3749                 break;
 3750         }
 3751 
 3752         return (EINVAL);
 3753 }
 3754 
 3755 int
 3756 linux_ioctl_register_handler(struct linux_ioctl_handler *h)
 3757 {
 3758         struct linux_ioctl_handler_element *he, *cur;
 3759 
 3760         if (h == NULL || h->func == NULL)
 3761                 return (EINVAL);
 3762 
 3763         /*
 3764          * Reuse the element if the handler is already on the list, otherwise
 3765          * create a new element.
 3766          */
 3767         sx_xlock(&linux_ioctl_sx);
 3768         TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
 3769                 if (he->func == h->func)
 3770                         break;
 3771         }
 3772         if (he == NULL) {
 3773                 he = malloc(sizeof(*he),
 3774                     M_LINUX, M_WAITOK);
 3775                 he->func = h->func;
 3776         } else
 3777                 TAILQ_REMOVE(&linux_ioctl_handlers, he, list);
 3778 
 3779         /* Initialize range information. */
 3780         he->low = h->low;
 3781         he->high = h->high;
 3782         he->span = h->high - h->low + 1;
 3783 
 3784         /* Add the element to the list, sorted on span. */
 3785         TAILQ_FOREACH(cur, &linux_ioctl_handlers, list) {
 3786                 if (cur->span > he->span) {
 3787                         TAILQ_INSERT_BEFORE(cur, he, list);
 3788                         sx_xunlock(&linux_ioctl_sx);
 3789                         return (0);
 3790                 }
 3791         }
 3792         TAILQ_INSERT_TAIL(&linux_ioctl_handlers, he, list);
 3793         sx_xunlock(&linux_ioctl_sx);
 3794 
 3795         return (0);
 3796 }
 3797 
 3798 int
 3799 linux_ioctl_unregister_handler(struct linux_ioctl_handler *h)
 3800 {
 3801         struct linux_ioctl_handler_element *he;
 3802 
 3803         if (h == NULL || h->func == NULL)
 3804                 return (EINVAL);
 3805 
 3806         sx_xlock(&linux_ioctl_sx);
 3807         TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
 3808                 if (he->func == h->func) {
 3809                         TAILQ_REMOVE(&linux_ioctl_handlers, he, list);
 3810                         sx_xunlock(&linux_ioctl_sx);
 3811                         free(he, M_LINUX);
 3812                         return (0);
 3813                 }
 3814         }
 3815         sx_xunlock(&linux_ioctl_sx);
 3816 
 3817         return (EINVAL);
 3818 }
 3819 
 3820 #ifdef COMPAT_LINUX32
 3821 int
 3822 linux32_ioctl_register_handler(struct linux_ioctl_handler *h)
 3823 {
 3824         struct linux_ioctl_handler_element *he, *cur;
 3825 
 3826         if (h == NULL || h->func == NULL)
 3827                 return (EINVAL);
 3828 
 3829         /*
 3830          * Reuse the element if the handler is already on the list, otherwise
 3831          * create a new element.
 3832          */
 3833         sx_xlock(&linux_ioctl_sx);
 3834         TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
 3835                 if (he->func == h->func)
 3836                         break;
 3837         }
 3838         if (he == NULL) {
 3839                 he = malloc(sizeof(*he), M_LINUX, M_WAITOK);
 3840                 he->func = h->func;
 3841         } else
 3842                 TAILQ_REMOVE(&linux32_ioctl_handlers, he, list);
 3843 
 3844         /* Initialize range information. */
 3845         he->low = h->low;
 3846         he->high = h->high;
 3847         he->span = h->high - h->low + 1;
 3848 
 3849         /* Add the element to the list, sorted on span. */
 3850         TAILQ_FOREACH(cur, &linux32_ioctl_handlers, list) {
 3851                 if (cur->span > he->span) {
 3852                         TAILQ_INSERT_BEFORE(cur, he, list);
 3853                         sx_xunlock(&linux_ioctl_sx);
 3854                         return (0);
 3855                 }
 3856         }
 3857         TAILQ_INSERT_TAIL(&linux32_ioctl_handlers, he, list);
 3858         sx_xunlock(&linux_ioctl_sx);
 3859 
 3860         return (0);
 3861 }
 3862 
 3863 int
 3864 linux32_ioctl_unregister_handler(struct linux_ioctl_handler *h)
 3865 {
 3866         struct linux_ioctl_handler_element *he;
 3867 
 3868         if (h == NULL || h->func == NULL)
 3869                 return (EINVAL);
 3870 
 3871         sx_xlock(&linux_ioctl_sx);
 3872         TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
 3873                 if (he->func == h->func) {
 3874                         TAILQ_REMOVE(&linux32_ioctl_handlers, he, list);
 3875                         sx_xunlock(&linux_ioctl_sx);
 3876                         free(he, M_LINUX);
 3877                         return (0);
 3878                 }
 3879         }
 3880         sx_xunlock(&linux_ioctl_sx);
 3881 
 3882         return (EINVAL);
 3883 }
 3884 #endif

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