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: releng/12.0/sys/compat/linux/linux_ioctl.c 340258 2018-11-08 19:56:29Z tijl $");
   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         bsd_to_linux_termios(bios, &lios);
  690         lio->c_iflag = lios.c_iflag;
  691         lio->c_oflag = lios.c_oflag;
  692         lio->c_cflag = lios.c_cflag;
  693         lio->c_lflag = lios.c_lflag;
  694         lio->c_line  = lios.c_line;
  695         memcpy(lio->c_cc, lios.c_cc, LINUX_NCC);
  696 }
  697 
  698 static void
  699 linux_to_bsd_termio(struct linux_termio *lio, struct termios *bios)
  700 {
  701         struct linux_termios lios;
  702         int i;
  703 
  704         lios.c_iflag = lio->c_iflag;
  705         lios.c_oflag = lio->c_oflag;
  706         lios.c_cflag = lio->c_cflag;
  707         lios.c_lflag = lio->c_lflag;
  708         for (i=LINUX_NCC; i<LINUX_NCCS; i++)
  709                 lios.c_cc[i] = LINUX_POSIX_VDISABLE;
  710         memcpy(lios.c_cc, lio->c_cc, LINUX_NCC);
  711         linux_to_bsd_termios(&lios, bios);
  712 }
  713 
  714 static int
  715 linux_ioctl_termio(struct thread *td, struct linux_ioctl_args *args)
  716 {
  717         struct termios bios;
  718         struct linux_termios lios;
  719         struct linux_termio lio;
  720         struct file *fp;
  721         int error;
  722 
  723         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
  724         if (error != 0)
  725                 return (error);
  726 
  727         switch (args->cmd & 0xffff) {
  728 
  729         case LINUX_TCGETS:
  730                 error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
  731                     td);
  732                 if (error)
  733                         break;
  734                 bsd_to_linux_termios(&bios, &lios);
  735                 error = copyout(&lios, (void *)args->arg, sizeof(lios));
  736                 break;
  737 
  738         case LINUX_TCSETS:
  739                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  740                 if (error)
  741                         break;
  742                 linux_to_bsd_termios(&lios, &bios);
  743                 error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
  744                     td));
  745                 break;
  746 
  747         case LINUX_TCSETSW:
  748                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  749                 if (error)
  750                         break;
  751                 linux_to_bsd_termios(&lios, &bios);
  752                 error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
  753                     td));
  754                 break;
  755 
  756         case LINUX_TCSETSF:
  757                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  758                 if (error)
  759                         break;
  760                 linux_to_bsd_termios(&lios, &bios);
  761                 error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
  762                     td));
  763                 break;
  764 
  765         case LINUX_TCGETA:
  766                 error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
  767                     td);
  768                 if (error)
  769                         break;
  770                 bsd_to_linux_termio(&bios, &lio);
  771                 error = (copyout(&lio, (void *)args->arg, sizeof(lio)));
  772                 break;
  773 
  774         case LINUX_TCSETA:
  775                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  776                 if (error)
  777                         break;
  778                 linux_to_bsd_termio(&lio, &bios);
  779                 error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
  780                     td));
  781                 break;
  782 
  783         case LINUX_TCSETAW:
  784                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  785                 if (error)
  786                         break;
  787                 linux_to_bsd_termio(&lio, &bios);
  788                 error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
  789                     td));
  790                 break;
  791 
  792         case LINUX_TCSETAF:
  793                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  794                 if (error)
  795                         break;
  796                 linux_to_bsd_termio(&lio, &bios);
  797                 error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
  798                     td));
  799                 break;
  800 
  801         /* LINUX_TCSBRK */
  802 
  803         case LINUX_TCXONC: {
  804                 switch (args->arg) {
  805                 case LINUX_TCOOFF:
  806                         args->cmd = TIOCSTOP;
  807                         break;
  808                 case LINUX_TCOON:
  809                         args->cmd = TIOCSTART;
  810                         break;
  811                 case LINUX_TCIOFF:
  812                 case LINUX_TCION: {
  813                         int c;
  814                         struct write_args wr;
  815                         error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios,
  816                             td->td_ucred, td);
  817                         if (error)
  818                                 break;
  819                         fdrop(fp, td);
  820                         c = (args->arg == LINUX_TCIOFF) ? VSTOP : VSTART;
  821                         c = bios.c_cc[c];
  822                         if (c != _POSIX_VDISABLE) {
  823                                 wr.fd = args->fd;
  824                                 wr.buf = &c;
  825                                 wr.nbyte = sizeof(c);
  826                                 return (sys_write(td, &wr));
  827                         } else
  828                                 return (0);
  829                 }
  830                 default:
  831                         fdrop(fp, td);
  832                         return (EINVAL);
  833                 }
  834                 args->arg = 0;
  835                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  836                 break;
  837         }
  838 
  839         case LINUX_TCFLSH: {
  840                 int val;
  841                 switch (args->arg) {
  842                 case LINUX_TCIFLUSH:
  843                         val = FREAD;
  844                         break;
  845                 case LINUX_TCOFLUSH:
  846                         val = FWRITE;
  847                         break;
  848                 case LINUX_TCIOFLUSH:
  849                         val = FREAD | FWRITE;
  850                         break;
  851                 default:
  852                         fdrop(fp, td);
  853                         return (EINVAL);
  854                 }
  855                 error = (fo_ioctl(fp,TIOCFLUSH,(caddr_t)&val,td->td_ucred,td));
  856                 break;
  857         }
  858 
  859         case LINUX_TIOCEXCL:
  860                 args->cmd = TIOCEXCL;
  861                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  862                 break;
  863 
  864         case LINUX_TIOCNXCL:
  865                 args->cmd = TIOCNXCL;
  866                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  867                 break;
  868 
  869         case LINUX_TIOCSCTTY:
  870                 args->cmd = TIOCSCTTY;
  871                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  872                 break;
  873 
  874         case LINUX_TIOCGPGRP:
  875                 args->cmd = TIOCGPGRP;
  876                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  877                 break;
  878 
  879         case LINUX_TIOCSPGRP:
  880                 args->cmd = TIOCSPGRP;
  881                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  882                 break;
  883 
  884         /* LINUX_TIOCOUTQ */
  885         /* LINUX_TIOCSTI */
  886 
  887         case LINUX_TIOCGWINSZ:
  888                 args->cmd = TIOCGWINSZ;
  889                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  890                 break;
  891 
  892         case LINUX_TIOCSWINSZ:
  893                 args->cmd = TIOCSWINSZ;
  894                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  895                 break;
  896 
  897         case LINUX_TIOCMGET:
  898                 args->cmd = TIOCMGET;
  899                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  900                 break;
  901 
  902         case LINUX_TIOCMBIS:
  903                 args->cmd = TIOCMBIS;
  904                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  905                 break;
  906 
  907         case LINUX_TIOCMBIC:
  908                 args->cmd = TIOCMBIC;
  909                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  910                 break;
  911 
  912         case LINUX_TIOCMSET:
  913                 args->cmd = TIOCMSET;
  914                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  915                 break;
  916 
  917         /* TIOCGSOFTCAR */
  918         /* TIOCSSOFTCAR */
  919 
  920         case LINUX_FIONREAD: /* LINUX_TIOCINQ */
  921                 args->cmd = FIONREAD;
  922                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  923                 break;
  924 
  925         /* LINUX_TIOCLINUX */
  926 
  927         case LINUX_TIOCCONS:
  928                 args->cmd = TIOCCONS;
  929                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  930                 break;
  931 
  932         case LINUX_TIOCGSERIAL: {
  933                 struct linux_serial_struct lss;
  934 
  935                 bzero(&lss, sizeof(lss));
  936                 lss.type = LINUX_PORT_16550A;
  937                 lss.flags = 0;
  938                 lss.close_delay = 0;
  939                 error = copyout(&lss, (void *)args->arg, sizeof(lss));
  940                 break;
  941         }
  942 
  943         case LINUX_TIOCSSERIAL: {
  944                 struct linux_serial_struct lss;
  945                 error = copyin((void *)args->arg, &lss, sizeof(lss));
  946                 if (error)
  947                         break;
  948                 /* XXX - It really helps to have an implementation that
  949                  * does nothing. NOT!
  950                  */
  951                 error = 0;
  952                 break;
  953         }
  954 
  955         case LINUX_TIOCPKT:
  956                 args->cmd = TIOCPKT;
  957                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  958                 break;
  959 
  960         case LINUX_FIONBIO:
  961                 args->cmd = FIONBIO;
  962                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  963                 break;
  964 
  965         case LINUX_TIOCNOTTY:
  966                 args->cmd = TIOCNOTTY;
  967                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  968                 break;
  969 
  970         case LINUX_TIOCSETD: {
  971                 int line;
  972                 switch (args->arg) {
  973                 case LINUX_N_TTY:
  974                         line = TTYDISC;
  975                         break;
  976                 case LINUX_N_SLIP:
  977                         line = SLIPDISC;
  978                         break;
  979                 case LINUX_N_PPP:
  980                         line = PPPDISC;
  981                         break;
  982                 default:
  983                         fdrop(fp, td);
  984                         return (EINVAL);
  985                 }
  986                 error = (fo_ioctl(fp, TIOCSETD, (caddr_t)&line, td->td_ucred,
  987                     td));
  988                 break;
  989         }
  990 
  991         case LINUX_TIOCGETD: {
  992                 int linux_line;
  993                 int bsd_line = TTYDISC;
  994                 error = fo_ioctl(fp, TIOCGETD, (caddr_t)&bsd_line,
  995                     td->td_ucred, td);
  996                 if (error)
  997                         break;
  998                 switch (bsd_line) {
  999                 case TTYDISC:
 1000                         linux_line = LINUX_N_TTY;
 1001                         break;
 1002                 case SLIPDISC:
 1003                         linux_line = LINUX_N_SLIP;
 1004                         break;
 1005                 case PPPDISC:
 1006                         linux_line = LINUX_N_PPP;
 1007                         break;
 1008                 default:
 1009                         fdrop(fp, td);
 1010                         return (EINVAL);
 1011                 }
 1012                 error = (copyout(&linux_line, (void *)args->arg, sizeof(int)));
 1013                 break;
 1014         }
 1015 
 1016         /* LINUX_TCSBRKP */
 1017         /* LINUX_TIOCTTYGSTRUCT */
 1018 
 1019         case LINUX_FIONCLEX:
 1020                 args->cmd = FIONCLEX;
 1021                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1022                 break;
 1023 
 1024         case LINUX_FIOCLEX:
 1025                 args->cmd = FIOCLEX;
 1026                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1027                 break;
 1028 
 1029         case LINUX_FIOASYNC:
 1030                 args->cmd = FIOASYNC;
 1031                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1032                 break;
 1033 
 1034         /* LINUX_TIOCSERCONFIG */
 1035         /* LINUX_TIOCSERGWILD */
 1036         /* LINUX_TIOCSERSWILD */
 1037         /* LINUX_TIOCGLCKTRMIOS */
 1038         /* LINUX_TIOCSLCKTRMIOS */
 1039 
 1040         case LINUX_TIOCSBRK:
 1041                 args->cmd = TIOCSBRK;
 1042                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1043                 break;
 1044 
 1045         case LINUX_TIOCCBRK:
 1046                 args->cmd = TIOCCBRK;
 1047                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1048                 break;
 1049         case LINUX_TIOCGPTN: {
 1050                 int nb;
 1051 
 1052                 error = fo_ioctl(fp, TIOCGPTN, (caddr_t)&nb, td->td_ucred, td);
 1053                 if (!error)
 1054                         error = copyout(&nb, (void *)args->arg,
 1055                             sizeof(int));
 1056                 break;
 1057         }
 1058         case LINUX_TIOCSPTLCK:
 1059                 /* Our unlockpt() does nothing. */
 1060                 error = 0;
 1061                 break;
 1062         default:
 1063                 error = ENOIOCTL;
 1064                 break;
 1065         }
 1066 
 1067         fdrop(fp, td);
 1068         return (error);
 1069 }
 1070 
 1071 /*
 1072  * CDROM related ioctls
 1073  */
 1074 
 1075 struct linux_cdrom_msf
 1076 {
 1077         u_char  cdmsf_min0;
 1078         u_char  cdmsf_sec0;
 1079         u_char  cdmsf_frame0;
 1080         u_char  cdmsf_min1;
 1081         u_char  cdmsf_sec1;
 1082         u_char  cdmsf_frame1;
 1083 };
 1084 
 1085 struct linux_cdrom_tochdr
 1086 {
 1087         u_char  cdth_trk0;
 1088         u_char  cdth_trk1;
 1089 };
 1090 
 1091 union linux_cdrom_addr
 1092 {
 1093         struct {
 1094                 u_char  minute;
 1095                 u_char  second;
 1096                 u_char  frame;
 1097         } msf;
 1098         int     lba;
 1099 };
 1100 
 1101 struct linux_cdrom_tocentry
 1102 {
 1103         u_char  cdte_track;
 1104         u_char  cdte_adr:4;
 1105         u_char  cdte_ctrl:4;
 1106         u_char  cdte_format;
 1107         union linux_cdrom_addr cdte_addr;
 1108         u_char  cdte_datamode;
 1109 };
 1110 
 1111 struct linux_cdrom_subchnl
 1112 {
 1113         u_char  cdsc_format;
 1114         u_char  cdsc_audiostatus;
 1115         u_char  cdsc_adr:4;
 1116         u_char  cdsc_ctrl:4;
 1117         u_char  cdsc_trk;
 1118         u_char  cdsc_ind;
 1119         union linux_cdrom_addr cdsc_absaddr;
 1120         union linux_cdrom_addr cdsc_reladdr;
 1121 };
 1122 
 1123 struct l_cdrom_read_audio {
 1124         union linux_cdrom_addr addr;
 1125         u_char          addr_format;
 1126         l_int           nframes;
 1127         u_char          *buf;
 1128 };
 1129 
 1130 struct l_dvd_layer {
 1131         u_char          book_version:4;
 1132         u_char          book_type:4;
 1133         u_char          min_rate:4;
 1134         u_char          disc_size:4;
 1135         u_char          layer_type:4;
 1136         u_char          track_path:1;
 1137         u_char          nlayers:2;
 1138         u_char          track_density:4;
 1139         u_char          linear_density:4;
 1140         u_char          bca:1;
 1141         u_int32_t       start_sector;
 1142         u_int32_t       end_sector;
 1143         u_int32_t       end_sector_l0;
 1144 };
 1145 
 1146 struct l_dvd_physical {
 1147         u_char          type;
 1148         u_char          layer_num;
 1149         struct l_dvd_layer layer[4];
 1150 };
 1151 
 1152 struct l_dvd_copyright {
 1153         u_char          type;
 1154         u_char          layer_num;
 1155         u_char          cpst;
 1156         u_char          rmi;
 1157 };
 1158 
 1159 struct l_dvd_disckey {
 1160         u_char          type;
 1161         l_uint          agid:2;
 1162         u_char          value[2048];
 1163 };
 1164 
 1165 struct l_dvd_bca {
 1166         u_char          type;
 1167         l_int           len;
 1168         u_char          value[188];
 1169 };
 1170 
 1171 struct l_dvd_manufact {
 1172         u_char          type;
 1173         u_char          layer_num;
 1174         l_int           len;
 1175         u_char          value[2048];
 1176 };
 1177 
 1178 typedef union {
 1179         u_char                  type;
 1180         struct l_dvd_physical   physical;
 1181         struct l_dvd_copyright  copyright;
 1182         struct l_dvd_disckey    disckey;
 1183         struct l_dvd_bca        bca;
 1184         struct l_dvd_manufact   manufact;
 1185 } l_dvd_struct;
 1186 
 1187 typedef u_char l_dvd_key[5];
 1188 typedef u_char l_dvd_challenge[10];
 1189 
 1190 struct l_dvd_lu_send_agid {
 1191         u_char          type;
 1192         l_uint          agid:2;
 1193 };
 1194 
 1195 struct l_dvd_host_send_challenge {
 1196         u_char          type;
 1197         l_uint          agid:2;
 1198         l_dvd_challenge chal;
 1199 };
 1200 
 1201 struct l_dvd_send_key {
 1202         u_char          type;
 1203         l_uint          agid:2;
 1204         l_dvd_key       key;
 1205 };
 1206 
 1207 struct l_dvd_lu_send_challenge {
 1208         u_char          type;
 1209         l_uint          agid:2;
 1210         l_dvd_challenge chal;
 1211 };
 1212 
 1213 struct l_dvd_lu_send_title_key {
 1214         u_char          type;
 1215         l_uint          agid:2;
 1216         l_dvd_key       title_key;
 1217         l_int           lba;
 1218         l_uint          cpm:1;
 1219         l_uint          cp_sec:1;
 1220         l_uint          cgms:2;
 1221 };
 1222 
 1223 struct l_dvd_lu_send_asf {
 1224         u_char          type;
 1225         l_uint          agid:2;
 1226         l_uint          asf:1;
 1227 };
 1228 
 1229 struct l_dvd_host_send_rpcstate {
 1230         u_char          type;
 1231         u_char          pdrc;
 1232 };
 1233 
 1234 struct l_dvd_lu_send_rpcstate {
 1235         u_char          type:2;
 1236         u_char          vra:3;
 1237         u_char          ucca:3;
 1238         u_char          region_mask;
 1239         u_char          rpc_scheme;
 1240 };
 1241 
 1242 typedef union {
 1243         u_char                          type;
 1244         struct l_dvd_lu_send_agid       lsa;
 1245         struct l_dvd_host_send_challenge hsc;
 1246         struct l_dvd_send_key           lsk;
 1247         struct l_dvd_lu_send_challenge  lsc;
 1248         struct l_dvd_send_key           hsk;
 1249         struct l_dvd_lu_send_title_key  lstk;
 1250         struct l_dvd_lu_send_asf        lsasf;
 1251         struct l_dvd_host_send_rpcstate hrpcs;
 1252         struct l_dvd_lu_send_rpcstate   lrpcs;
 1253 } l_dvd_authinfo;
 1254 
 1255 static void
 1256 bsd_to_linux_msf_lba(u_char af, union msf_lba *bp, union linux_cdrom_addr *lp)
 1257 {
 1258         if (af == CD_LBA_FORMAT)
 1259                 lp->lba = bp->lba;
 1260         else {
 1261                 lp->msf.minute = bp->msf.minute;
 1262                 lp->msf.second = bp->msf.second;
 1263                 lp->msf.frame = bp->msf.frame;
 1264         }
 1265 }
 1266 
 1267 static void
 1268 set_linux_cdrom_addr(union linux_cdrom_addr *addr, int format, int lba)
 1269 {
 1270         if (format == LINUX_CDROM_MSF) {
 1271                 addr->msf.frame = lba % 75;
 1272                 lba /= 75;
 1273                 lba += 2;
 1274                 addr->msf.second = lba % 60;
 1275                 addr->msf.minute = lba / 60;
 1276         } else
 1277                 addr->lba = lba;
 1278 }
 1279 
 1280 static int
 1281 linux_to_bsd_dvd_struct(l_dvd_struct *lp, struct dvd_struct *bp)
 1282 {
 1283         bp->format = lp->type;
 1284         switch (bp->format) {
 1285         case DVD_STRUCT_PHYSICAL:
 1286                 if (bp->layer_num >= 4)
 1287                         return (EINVAL);
 1288                 bp->layer_num = lp->physical.layer_num;
 1289                 break;
 1290         case DVD_STRUCT_COPYRIGHT:
 1291                 bp->layer_num = lp->copyright.layer_num;
 1292                 break;
 1293         case DVD_STRUCT_DISCKEY:
 1294                 bp->agid = lp->disckey.agid;
 1295                 break;
 1296         case DVD_STRUCT_BCA:
 1297         case DVD_STRUCT_MANUFACT:
 1298                 break;
 1299         default:
 1300                 return (EINVAL);
 1301         }
 1302         return (0);
 1303 }
 1304 
 1305 static int
 1306 bsd_to_linux_dvd_struct(struct dvd_struct *bp, l_dvd_struct *lp)
 1307 {
 1308         switch (bp->format) {
 1309         case DVD_STRUCT_PHYSICAL: {
 1310                 struct dvd_layer *blp = (struct dvd_layer *)bp->data;
 1311                 struct l_dvd_layer *llp = &lp->physical.layer[bp->layer_num];
 1312                 memset(llp, 0, sizeof(*llp));
 1313                 llp->book_version = blp->book_version;
 1314                 llp->book_type = blp->book_type;
 1315                 llp->min_rate = blp->max_rate;
 1316                 llp->disc_size = blp->disc_size;
 1317                 llp->layer_type = blp->layer_type;
 1318                 llp->track_path = blp->track_path;
 1319                 llp->nlayers = blp->nlayers;
 1320                 llp->track_density = blp->track_density;
 1321                 llp->linear_density = blp->linear_density;
 1322                 llp->bca = blp->bca;
 1323                 llp->start_sector = blp->start_sector;
 1324                 llp->end_sector = blp->end_sector;
 1325                 llp->end_sector_l0 = blp->end_sector_l0;
 1326                 break;
 1327         }
 1328         case DVD_STRUCT_COPYRIGHT:
 1329                 lp->copyright.cpst = bp->cpst;
 1330                 lp->copyright.rmi = bp->rmi;
 1331                 break;
 1332         case DVD_STRUCT_DISCKEY:
 1333                 memcpy(lp->disckey.value, bp->data, sizeof(lp->disckey.value));
 1334                 break;
 1335         case DVD_STRUCT_BCA:
 1336                 lp->bca.len = bp->length;
 1337                 memcpy(lp->bca.value, bp->data, sizeof(lp->bca.value));
 1338                 break;
 1339         case DVD_STRUCT_MANUFACT:
 1340                 lp->manufact.len = bp->length;
 1341                 memcpy(lp->manufact.value, bp->data,
 1342                     sizeof(lp->manufact.value));
 1343                 /* lp->manufact.layer_num is unused in Linux (redhat 7.0). */
 1344                 break;
 1345         default:
 1346                 return (EINVAL);
 1347         }
 1348         return (0);
 1349 }
 1350 
 1351 static int
 1352 linux_to_bsd_dvd_authinfo(l_dvd_authinfo *lp, int *bcode,
 1353     struct dvd_authinfo *bp)
 1354 {
 1355         switch (lp->type) {
 1356         case LINUX_DVD_LU_SEND_AGID:
 1357                 *bcode = DVDIOCREPORTKEY;
 1358                 bp->format = DVD_REPORT_AGID;
 1359                 bp->agid = lp->lsa.agid;
 1360                 break;
 1361         case LINUX_DVD_HOST_SEND_CHALLENGE:
 1362                 *bcode = DVDIOCSENDKEY;
 1363                 bp->format = DVD_SEND_CHALLENGE;
 1364                 bp->agid = lp->hsc.agid;
 1365                 memcpy(bp->keychal, lp->hsc.chal, 10);
 1366                 break;
 1367         case LINUX_DVD_LU_SEND_KEY1:
 1368                 *bcode = DVDIOCREPORTKEY;
 1369                 bp->format = DVD_REPORT_KEY1;
 1370                 bp->agid = lp->lsk.agid;
 1371                 break;
 1372         case LINUX_DVD_LU_SEND_CHALLENGE:
 1373                 *bcode = DVDIOCREPORTKEY;
 1374                 bp->format = DVD_REPORT_CHALLENGE;
 1375                 bp->agid = lp->lsc.agid;
 1376                 break;
 1377         case LINUX_DVD_HOST_SEND_KEY2:
 1378                 *bcode = DVDIOCSENDKEY;
 1379                 bp->format = DVD_SEND_KEY2;
 1380                 bp->agid = lp->hsk.agid;
 1381                 memcpy(bp->keychal, lp->hsk.key, 5);
 1382                 break;
 1383         case LINUX_DVD_LU_SEND_TITLE_KEY:
 1384                 *bcode = DVDIOCREPORTKEY;
 1385                 bp->format = DVD_REPORT_TITLE_KEY;
 1386                 bp->agid = lp->lstk.agid;
 1387                 bp->lba = lp->lstk.lba;
 1388                 break;
 1389         case LINUX_DVD_LU_SEND_ASF:
 1390                 *bcode = DVDIOCREPORTKEY;
 1391                 bp->format = DVD_REPORT_ASF;
 1392                 bp->agid = lp->lsasf.agid;
 1393                 break;
 1394         case LINUX_DVD_INVALIDATE_AGID:
 1395                 *bcode = DVDIOCREPORTKEY;
 1396                 bp->format = DVD_INVALIDATE_AGID;
 1397                 bp->agid = lp->lsa.agid;
 1398                 break;
 1399         case LINUX_DVD_LU_SEND_RPC_STATE:
 1400                 *bcode = DVDIOCREPORTKEY;
 1401                 bp->format = DVD_REPORT_RPC;
 1402                 break;
 1403         case LINUX_DVD_HOST_SEND_RPC_STATE:
 1404                 *bcode = DVDIOCSENDKEY;
 1405                 bp->format = DVD_SEND_RPC;
 1406                 bp->region = lp->hrpcs.pdrc;
 1407                 break;
 1408         default:
 1409                 return (EINVAL);
 1410         }
 1411         return (0);
 1412 }
 1413 
 1414 static int
 1415 bsd_to_linux_dvd_authinfo(struct dvd_authinfo *bp, l_dvd_authinfo *lp)
 1416 {
 1417         switch (lp->type) {
 1418         case LINUX_DVD_LU_SEND_AGID:
 1419                 lp->lsa.agid = bp->agid;
 1420                 break;
 1421         case LINUX_DVD_HOST_SEND_CHALLENGE:
 1422                 lp->type = LINUX_DVD_LU_SEND_KEY1;
 1423                 break;
 1424         case LINUX_DVD_LU_SEND_KEY1:
 1425                 memcpy(lp->lsk.key, bp->keychal, sizeof(lp->lsk.key));
 1426                 break;
 1427         case LINUX_DVD_LU_SEND_CHALLENGE:
 1428                 memcpy(lp->lsc.chal, bp->keychal, sizeof(lp->lsc.chal));
 1429                 break;
 1430         case LINUX_DVD_HOST_SEND_KEY2:
 1431                 lp->type = LINUX_DVD_AUTH_ESTABLISHED;
 1432                 break;
 1433         case LINUX_DVD_LU_SEND_TITLE_KEY:
 1434                 memcpy(lp->lstk.title_key, bp->keychal,
 1435                     sizeof(lp->lstk.title_key));
 1436                 lp->lstk.cpm = bp->cpm;
 1437                 lp->lstk.cp_sec = bp->cp_sec;
 1438                 lp->lstk.cgms = bp->cgms;
 1439                 break;
 1440         case LINUX_DVD_LU_SEND_ASF:
 1441                 lp->lsasf.asf = bp->asf;
 1442                 break;
 1443         case LINUX_DVD_INVALIDATE_AGID:
 1444                 break;
 1445         case LINUX_DVD_LU_SEND_RPC_STATE:
 1446                 lp->lrpcs.type = bp->reg_type;
 1447                 lp->lrpcs.vra = bp->vend_rsts;
 1448                 lp->lrpcs.ucca = bp->user_rsts;
 1449                 lp->lrpcs.region_mask = bp->region;
 1450                 lp->lrpcs.rpc_scheme = bp->rpc_scheme;
 1451                 break;
 1452         case LINUX_DVD_HOST_SEND_RPC_STATE:
 1453                 break;
 1454         default:
 1455                 return (EINVAL);
 1456         }
 1457         return (0);
 1458 }
 1459 
 1460 static int
 1461 linux_ioctl_cdrom(struct thread *td, struct linux_ioctl_args *args)
 1462 {
 1463         struct file *fp;
 1464         int error;
 1465 
 1466         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 1467         if (error != 0)
 1468                 return (error);
 1469         switch (args->cmd & 0xffff) {
 1470 
 1471         case LINUX_CDROMPAUSE:
 1472                 args->cmd = CDIOCPAUSE;
 1473                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1474                 break;
 1475 
 1476         case LINUX_CDROMRESUME:
 1477                 args->cmd = CDIOCRESUME;
 1478                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1479                 break;
 1480 
 1481         case LINUX_CDROMPLAYMSF:
 1482                 args->cmd = CDIOCPLAYMSF;
 1483                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1484                 break;
 1485 
 1486         case LINUX_CDROMPLAYTRKIND:
 1487                 args->cmd = CDIOCPLAYTRACKS;
 1488                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1489                 break;
 1490 
 1491         case LINUX_CDROMREADTOCHDR: {
 1492                 struct ioc_toc_header th;
 1493                 struct linux_cdrom_tochdr lth;
 1494                 error = fo_ioctl(fp, CDIOREADTOCHEADER, (caddr_t)&th,
 1495                     td->td_ucred, td);
 1496                 if (!error) {
 1497                         lth.cdth_trk0 = th.starting_track;
 1498                         lth.cdth_trk1 = th.ending_track;
 1499                         copyout(&lth, (void *)args->arg, sizeof(lth));
 1500                 }
 1501                 break;
 1502         }
 1503 
 1504         case LINUX_CDROMREADTOCENTRY: {
 1505                 struct linux_cdrom_tocentry lte;
 1506                 struct ioc_read_toc_single_entry irtse;
 1507 
 1508                 error = copyin((void *)args->arg, &lte, sizeof(lte));
 1509                 if (error)
 1510                         break;
 1511                 irtse.address_format = lte.cdte_format;
 1512                 irtse.track = lte.cdte_track;
 1513                 error = fo_ioctl(fp, CDIOREADTOCENTRY, (caddr_t)&irtse,
 1514                     td->td_ucred, td);
 1515                 if (!error) {
 1516                         lte.cdte_ctrl = irtse.entry.control;
 1517                         lte.cdte_adr = irtse.entry.addr_type;
 1518                         bsd_to_linux_msf_lba(irtse.address_format,
 1519                             &irtse.entry.addr, &lte.cdte_addr);
 1520                         error = copyout(&lte, (void *)args->arg, sizeof(lte));
 1521                 }
 1522                 break;
 1523         }
 1524 
 1525         case LINUX_CDROMSTOP:
 1526                 args->cmd = CDIOCSTOP;
 1527                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1528                 break;
 1529 
 1530         case LINUX_CDROMSTART:
 1531                 args->cmd = CDIOCSTART;
 1532                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1533                 break;
 1534 
 1535         case LINUX_CDROMEJECT:
 1536                 args->cmd = CDIOCEJECT;
 1537                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1538                 break;
 1539 
 1540         /* LINUX_CDROMVOLCTRL */
 1541 
 1542         case LINUX_CDROMSUBCHNL: {
 1543                 struct linux_cdrom_subchnl sc;
 1544                 struct ioc_read_subchannel bsdsc;
 1545                 struct cd_sub_channel_info bsdinfo;
 1546 
 1547                 bsdsc.address_format = CD_LBA_FORMAT;
 1548                 bsdsc.data_format = CD_CURRENT_POSITION;
 1549                 bsdsc.track = 0;
 1550                 bsdsc.data_len = sizeof(bsdinfo);
 1551                 bsdsc.data = &bsdinfo;
 1552                 error = fo_ioctl(fp, CDIOCREADSUBCHANNEL_SYSSPACE,
 1553                     (caddr_t)&bsdsc, td->td_ucred, td);
 1554                 if (error)
 1555                         break;
 1556                 error = copyin((void *)args->arg, &sc, sizeof(sc));
 1557                 if (error)
 1558                         break;
 1559                 sc.cdsc_audiostatus = bsdinfo.header.audio_status;
 1560                 sc.cdsc_adr = bsdinfo.what.position.addr_type;
 1561                 sc.cdsc_ctrl = bsdinfo.what.position.control;
 1562                 sc.cdsc_trk = bsdinfo.what.position.track_number;
 1563                 sc.cdsc_ind = bsdinfo.what.position.index_number;
 1564                 set_linux_cdrom_addr(&sc.cdsc_absaddr, sc.cdsc_format,
 1565                     bsdinfo.what.position.absaddr.lba);
 1566                 set_linux_cdrom_addr(&sc.cdsc_reladdr, sc.cdsc_format,
 1567                     bsdinfo.what.position.reladdr.lba);
 1568                 error = copyout(&sc, (void *)args->arg, sizeof(sc));
 1569                 break;
 1570         }
 1571 
 1572         /* LINUX_CDROMREADMODE2 */
 1573         /* LINUX_CDROMREADMODE1 */
 1574         /* LINUX_CDROMREADAUDIO */
 1575         /* LINUX_CDROMEJECT_SW */
 1576         /* LINUX_CDROMMULTISESSION */
 1577         /* LINUX_CDROM_GET_UPC */
 1578 
 1579         case LINUX_CDROMRESET:
 1580                 args->cmd = CDIOCRESET;
 1581                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1582                 break;
 1583 
 1584         /* LINUX_CDROMVOLREAD */
 1585         /* LINUX_CDROMREADRAW */
 1586         /* LINUX_CDROMREADCOOKED */
 1587         /* LINUX_CDROMSEEK */
 1588         /* LINUX_CDROMPLAYBLK */
 1589         /* LINUX_CDROMREADALL */
 1590         /* LINUX_CDROMCLOSETRAY */
 1591         /* LINUX_CDROMLOADFROMSLOT */
 1592         /* LINUX_CDROMGETSPINDOWN */
 1593         /* LINUX_CDROMSETSPINDOWN */
 1594         /* LINUX_CDROM_SET_OPTIONS */
 1595         /* LINUX_CDROM_CLEAR_OPTIONS */
 1596         /* LINUX_CDROM_SELECT_SPEED */
 1597         /* LINUX_CDROM_SELECT_DISC */
 1598         /* LINUX_CDROM_MEDIA_CHANGED */
 1599         /* LINUX_CDROM_DRIVE_STATUS */
 1600         /* LINUX_CDROM_DISC_STATUS */
 1601         /* LINUX_CDROM_CHANGER_NSLOTS */
 1602         /* LINUX_CDROM_LOCKDOOR */
 1603         /* LINUX_CDROM_DEBUG */
 1604         /* LINUX_CDROM_GET_CAPABILITY */
 1605         /* LINUX_CDROMAUDIOBUFSIZ */
 1606 
 1607         case LINUX_DVD_READ_STRUCT: {
 1608                 l_dvd_struct *lds;
 1609                 struct dvd_struct *bds;
 1610 
 1611                 lds = malloc(sizeof(*lds), M_LINUX, M_WAITOK);
 1612                 bds = malloc(sizeof(*bds), M_LINUX, M_WAITOK);
 1613                 error = copyin((void *)args->arg, lds, sizeof(*lds));
 1614                 if (error)
 1615                         goto out;
 1616                 error = linux_to_bsd_dvd_struct(lds, bds);
 1617                 if (error)
 1618                         goto out;
 1619                 error = fo_ioctl(fp, DVDIOCREADSTRUCTURE, (caddr_t)bds,
 1620                     td->td_ucred, td);
 1621                 if (error)
 1622                         goto out;
 1623                 error = bsd_to_linux_dvd_struct(bds, lds);
 1624                 if (error)
 1625                         goto out;
 1626                 error = copyout(lds, (void *)args->arg, sizeof(*lds));
 1627         out:
 1628                 free(bds, M_LINUX);
 1629                 free(lds, M_LINUX);
 1630                 break;
 1631         }
 1632 
 1633         /* LINUX_DVD_WRITE_STRUCT */
 1634 
 1635         case LINUX_DVD_AUTH: {
 1636                 l_dvd_authinfo lda;
 1637                 struct dvd_authinfo bda;
 1638                 int bcode;
 1639 
 1640                 error = copyin((void *)args->arg, &lda, sizeof(lda));
 1641                 if (error)
 1642                         break;
 1643                 error = linux_to_bsd_dvd_authinfo(&lda, &bcode, &bda);
 1644                 if (error)
 1645                         break;
 1646                 error = fo_ioctl(fp, bcode, (caddr_t)&bda, td->td_ucred,
 1647                     td);
 1648                 if (error) {
 1649                         if (lda.type == LINUX_DVD_HOST_SEND_KEY2) {
 1650                                 lda.type = LINUX_DVD_AUTH_FAILURE;
 1651                                 copyout(&lda, (void *)args->arg, sizeof(lda));
 1652                         }
 1653                         break;
 1654                 }
 1655                 error = bsd_to_linux_dvd_authinfo(&bda, &lda);
 1656                 if (error)
 1657                         break;
 1658                 error = copyout(&lda, (void *)args->arg, sizeof(lda));
 1659                 break;
 1660         }
 1661 
 1662         case LINUX_SCSI_GET_BUS_NUMBER:
 1663         {
 1664                 struct sg_scsi_id id;
 1665 
 1666                 error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
 1667                     td->td_ucred, td);
 1668                 if (error)
 1669                         break;
 1670                 error = copyout(&id.channel, (void *)args->arg, sizeof(int));
 1671                 break;
 1672         }
 1673 
 1674         case LINUX_SCSI_GET_IDLUN:
 1675         {
 1676                 struct sg_scsi_id id;
 1677                 struct scsi_idlun idl;
 1678 
 1679                 error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
 1680                     td->td_ucred, td);
 1681                 if (error)
 1682                         break;
 1683                 idl.dev_id = (id.scsi_id & 0xff) + ((id.lun & 0xff) << 8) +
 1684                     ((id.channel & 0xff) << 16) + ((id.host_no & 0xff) << 24);
 1685                 idl.host_unique_id = id.host_no;
 1686                 error = copyout(&idl, (void *)args->arg, sizeof(idl));
 1687                 break;
 1688         }
 1689 
 1690         /* LINUX_CDROM_SEND_PACKET */
 1691         /* LINUX_CDROM_NEXT_WRITABLE */
 1692         /* LINUX_CDROM_LAST_WRITTEN */
 1693 
 1694         default:
 1695                 error = ENOIOCTL;
 1696                 break;
 1697         }
 1698 
 1699         fdrop(fp, td);
 1700         return (error);
 1701 }
 1702 
 1703 static int
 1704 linux_ioctl_vfat(struct thread *td, struct linux_ioctl_args *args)
 1705 {
 1706 
 1707         return (ENOTTY);
 1708 }
 1709 
 1710 /*
 1711  * Sound related ioctls
 1712  */
 1713 
 1714 struct linux_old_mixer_info {
 1715         char    id[16];
 1716         char    name[32];
 1717 };
 1718 
 1719 static u_int32_t dirbits[4] = { IOC_VOID, IOC_IN, IOC_OUT, IOC_INOUT };
 1720 
 1721 #define SETDIR(c)       (((c) & ~IOC_DIRMASK) | dirbits[args->cmd >> 30])
 1722 
 1723 static int
 1724 linux_ioctl_sound(struct thread *td, struct linux_ioctl_args *args)
 1725 {
 1726 
 1727         switch (args->cmd & 0xffff) {
 1728 
 1729         case LINUX_SOUND_MIXER_WRITE_VOLUME:
 1730                 args->cmd = SETDIR(SOUND_MIXER_WRITE_VOLUME);
 1731                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1732 
 1733         case LINUX_SOUND_MIXER_WRITE_BASS:
 1734                 args->cmd = SETDIR(SOUND_MIXER_WRITE_BASS);
 1735                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1736 
 1737         case LINUX_SOUND_MIXER_WRITE_TREBLE:
 1738                 args->cmd = SETDIR(SOUND_MIXER_WRITE_TREBLE);
 1739                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1740 
 1741         case LINUX_SOUND_MIXER_WRITE_SYNTH:
 1742                 args->cmd = SETDIR(SOUND_MIXER_WRITE_SYNTH);
 1743                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1744 
 1745         case LINUX_SOUND_MIXER_WRITE_PCM:
 1746                 args->cmd = SETDIR(SOUND_MIXER_WRITE_PCM);
 1747                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1748 
 1749         case LINUX_SOUND_MIXER_WRITE_SPEAKER:
 1750                 args->cmd = SETDIR(SOUND_MIXER_WRITE_SPEAKER);
 1751                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1752 
 1753         case LINUX_SOUND_MIXER_WRITE_LINE:
 1754                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE);
 1755                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1756 
 1757         case LINUX_SOUND_MIXER_WRITE_MIC:
 1758                 args->cmd = SETDIR(SOUND_MIXER_WRITE_MIC);
 1759                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1760 
 1761         case LINUX_SOUND_MIXER_WRITE_CD:
 1762                 args->cmd = SETDIR(SOUND_MIXER_WRITE_CD);
 1763                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1764 
 1765         case LINUX_SOUND_MIXER_WRITE_IMIX:
 1766                 args->cmd = SETDIR(SOUND_MIXER_WRITE_IMIX);
 1767                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1768 
 1769         case LINUX_SOUND_MIXER_WRITE_ALTPCM:
 1770                 args->cmd = SETDIR(SOUND_MIXER_WRITE_ALTPCM);
 1771                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1772 
 1773         case LINUX_SOUND_MIXER_WRITE_RECLEV:
 1774                 args->cmd = SETDIR(SOUND_MIXER_WRITE_RECLEV);
 1775                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1776 
 1777         case LINUX_SOUND_MIXER_WRITE_IGAIN:
 1778                 args->cmd = SETDIR(SOUND_MIXER_WRITE_IGAIN);
 1779                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1780 
 1781         case LINUX_SOUND_MIXER_WRITE_OGAIN:
 1782                 args->cmd = SETDIR(SOUND_MIXER_WRITE_OGAIN);
 1783                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1784 
 1785         case LINUX_SOUND_MIXER_WRITE_LINE1:
 1786                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE1);
 1787                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1788 
 1789         case LINUX_SOUND_MIXER_WRITE_LINE2:
 1790                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE2);
 1791                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1792 
 1793         case LINUX_SOUND_MIXER_WRITE_LINE3:
 1794                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE3);
 1795                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1796 
 1797         case LINUX_SOUND_MIXER_INFO: {
 1798                 /* Key on encoded length */
 1799                 switch ((args->cmd >> 16) & 0x1fff) {
 1800                 case 0x005c: {  /* SOUND_MIXER_INFO */
 1801                         args->cmd = SOUND_MIXER_INFO;
 1802                         return (sys_ioctl(td, (struct ioctl_args *)args));
 1803                 }
 1804                 case 0x0030: {  /* SOUND_OLD_MIXER_INFO */
 1805                         struct linux_old_mixer_info info;
 1806                         bzero(&info, sizeof(info));
 1807                         strncpy(info.id, "OSS", sizeof(info.id) - 1);
 1808                         strncpy(info.name, "FreeBSD OSS Mixer", sizeof(info.name) - 1);
 1809                         copyout(&info, (void *)args->arg, sizeof(info));
 1810                         return (0);
 1811                 }
 1812                 default:
 1813                         return (ENOIOCTL);
 1814                 }
 1815                 break;
 1816         }
 1817 
 1818         case LINUX_OSS_GETVERSION: {
 1819                 int version = linux_get_oss_version(td);
 1820                 return (copyout(&version, (void *)args->arg, sizeof(int)));
 1821         }
 1822 
 1823         case LINUX_SOUND_MIXER_READ_STEREODEVS:
 1824                 args->cmd = SOUND_MIXER_READ_STEREODEVS;
 1825                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1826 
 1827         case LINUX_SOUND_MIXER_READ_CAPS:
 1828                 args->cmd = SOUND_MIXER_READ_CAPS;
 1829                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1830 
 1831         case LINUX_SOUND_MIXER_READ_RECMASK:
 1832                 args->cmd = SOUND_MIXER_READ_RECMASK;
 1833                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1834 
 1835         case LINUX_SOUND_MIXER_READ_DEVMASK:
 1836                 args->cmd = SOUND_MIXER_READ_DEVMASK;
 1837                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1838 
 1839         case LINUX_SOUND_MIXER_WRITE_RECSRC:
 1840                 args->cmd = SETDIR(SOUND_MIXER_WRITE_RECSRC);
 1841                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1842 
 1843         case LINUX_SNDCTL_DSP_RESET:
 1844                 args->cmd = SNDCTL_DSP_RESET;
 1845                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1846 
 1847         case LINUX_SNDCTL_DSP_SYNC:
 1848                 args->cmd = SNDCTL_DSP_SYNC;
 1849                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1850 
 1851         case LINUX_SNDCTL_DSP_SPEED:
 1852                 args->cmd = SNDCTL_DSP_SPEED;
 1853                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1854 
 1855         case LINUX_SNDCTL_DSP_STEREO:
 1856                 args->cmd = SNDCTL_DSP_STEREO;
 1857                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1858 
 1859         case LINUX_SNDCTL_DSP_GETBLKSIZE: /* LINUX_SNDCTL_DSP_SETBLKSIZE */
 1860                 args->cmd = SNDCTL_DSP_GETBLKSIZE;
 1861                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1862 
 1863         case LINUX_SNDCTL_DSP_SETFMT:
 1864                 args->cmd = SNDCTL_DSP_SETFMT;
 1865                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1866 
 1867         case LINUX_SOUND_PCM_WRITE_CHANNELS:
 1868                 args->cmd = SOUND_PCM_WRITE_CHANNELS;
 1869                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1870 
 1871         case LINUX_SOUND_PCM_WRITE_FILTER:
 1872                 args->cmd = SOUND_PCM_WRITE_FILTER;
 1873                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1874 
 1875         case LINUX_SNDCTL_DSP_POST:
 1876                 args->cmd = SNDCTL_DSP_POST;
 1877                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1878 
 1879         case LINUX_SNDCTL_DSP_SUBDIVIDE:
 1880                 args->cmd = SNDCTL_DSP_SUBDIVIDE;
 1881                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1882 
 1883         case LINUX_SNDCTL_DSP_SETFRAGMENT:
 1884                 args->cmd = SNDCTL_DSP_SETFRAGMENT;
 1885                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1886 
 1887         case LINUX_SNDCTL_DSP_GETFMTS:
 1888                 args->cmd = SNDCTL_DSP_GETFMTS;
 1889                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1890 
 1891         case LINUX_SNDCTL_DSP_GETOSPACE:
 1892                 args->cmd = SNDCTL_DSP_GETOSPACE;
 1893                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1894 
 1895         case LINUX_SNDCTL_DSP_GETISPACE:
 1896                 args->cmd = SNDCTL_DSP_GETISPACE;
 1897                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1898 
 1899         case LINUX_SNDCTL_DSP_NONBLOCK:
 1900                 args->cmd = SNDCTL_DSP_NONBLOCK;
 1901                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1902 
 1903         case LINUX_SNDCTL_DSP_GETCAPS:
 1904                 args->cmd = SNDCTL_DSP_GETCAPS;
 1905                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1906 
 1907         case LINUX_SNDCTL_DSP_SETTRIGGER: /* LINUX_SNDCTL_GETTRIGGER */
 1908                 args->cmd = SNDCTL_DSP_SETTRIGGER;
 1909                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1910 
 1911         case LINUX_SNDCTL_DSP_GETIPTR:
 1912                 args->cmd = SNDCTL_DSP_GETIPTR;
 1913                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1914 
 1915         case LINUX_SNDCTL_DSP_GETOPTR:
 1916                 args->cmd = SNDCTL_DSP_GETOPTR;
 1917                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1918 
 1919         case LINUX_SNDCTL_DSP_SETDUPLEX:
 1920                 args->cmd = SNDCTL_DSP_SETDUPLEX;
 1921                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1922 
 1923         case LINUX_SNDCTL_DSP_GETODELAY:
 1924                 args->cmd = SNDCTL_DSP_GETODELAY;
 1925                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1926 
 1927         case LINUX_SNDCTL_SEQ_RESET:
 1928                 args->cmd = SNDCTL_SEQ_RESET;
 1929                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1930 
 1931         case LINUX_SNDCTL_SEQ_SYNC:
 1932                 args->cmd = SNDCTL_SEQ_SYNC;
 1933                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1934 
 1935         case LINUX_SNDCTL_SYNTH_INFO:
 1936                 args->cmd = SNDCTL_SYNTH_INFO;
 1937                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1938 
 1939         case LINUX_SNDCTL_SEQ_CTRLRATE:
 1940                 args->cmd = SNDCTL_SEQ_CTRLRATE;
 1941                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1942 
 1943         case LINUX_SNDCTL_SEQ_GETOUTCOUNT:
 1944                 args->cmd = SNDCTL_SEQ_GETOUTCOUNT;
 1945                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1946 
 1947         case LINUX_SNDCTL_SEQ_GETINCOUNT:
 1948                 args->cmd = SNDCTL_SEQ_GETINCOUNT;
 1949                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1950 
 1951         case LINUX_SNDCTL_SEQ_PERCMODE:
 1952                 args->cmd = SNDCTL_SEQ_PERCMODE;
 1953                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1954 
 1955         case LINUX_SNDCTL_FM_LOAD_INSTR:
 1956                 args->cmd = SNDCTL_FM_LOAD_INSTR;
 1957                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1958 
 1959         case LINUX_SNDCTL_SEQ_TESTMIDI:
 1960                 args->cmd = SNDCTL_SEQ_TESTMIDI;
 1961                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1962 
 1963         case LINUX_SNDCTL_SEQ_RESETSAMPLES:
 1964                 args->cmd = SNDCTL_SEQ_RESETSAMPLES;
 1965                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1966 
 1967         case LINUX_SNDCTL_SEQ_NRSYNTHS:
 1968                 args->cmd = SNDCTL_SEQ_NRSYNTHS;
 1969                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1970 
 1971         case LINUX_SNDCTL_SEQ_NRMIDIS:
 1972                 args->cmd = SNDCTL_SEQ_NRMIDIS;
 1973                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1974 
 1975         case LINUX_SNDCTL_MIDI_INFO:
 1976                 args->cmd = SNDCTL_MIDI_INFO;
 1977                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1978 
 1979         case LINUX_SNDCTL_SEQ_TRESHOLD:
 1980                 args->cmd = SNDCTL_SEQ_TRESHOLD;
 1981                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1982 
 1983         case LINUX_SNDCTL_SYNTH_MEMAVL:
 1984                 args->cmd = SNDCTL_SYNTH_MEMAVL;
 1985                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1986 
 1987         }
 1988 
 1989         return (ENOIOCTL);
 1990 }
 1991 
 1992 /*
 1993  * Console related ioctls
 1994  */
 1995 
 1996 static int
 1997 linux_ioctl_console(struct thread *td, struct linux_ioctl_args *args)
 1998 {
 1999         struct file *fp;
 2000         int error;
 2001 
 2002         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 2003         if (error != 0)
 2004                 return (error);
 2005         switch (args->cmd & 0xffff) {
 2006 
 2007         case LINUX_KIOCSOUND:
 2008                 args->cmd = KIOCSOUND;
 2009                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2010                 break;
 2011 
 2012         case LINUX_KDMKTONE:
 2013                 args->cmd = KDMKTONE;
 2014                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2015                 break;
 2016 
 2017         case LINUX_KDGETLED:
 2018                 args->cmd = KDGETLED;
 2019                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2020                 break;
 2021 
 2022         case LINUX_KDSETLED:
 2023                 args->cmd = KDSETLED;
 2024                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2025                 break;
 2026 
 2027         case LINUX_KDSETMODE:
 2028                 args->cmd = KDSETMODE;
 2029                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2030                 break;
 2031 
 2032         case LINUX_KDGETMODE:
 2033                 args->cmd = KDGETMODE;
 2034                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2035                 break;
 2036 
 2037         case LINUX_KDGKBMODE:
 2038                 args->cmd = KDGKBMODE;
 2039                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2040                 break;
 2041 
 2042         case LINUX_KDSKBMODE: {
 2043                 int kbdmode;
 2044                 switch (args->arg) {
 2045                 case LINUX_KBD_RAW:
 2046                         kbdmode = K_RAW;
 2047                         break;
 2048                 case LINUX_KBD_XLATE:
 2049                         kbdmode = K_XLATE;
 2050                         break;
 2051                 case LINUX_KBD_MEDIUMRAW:
 2052                         kbdmode = K_RAW;
 2053                         break;
 2054                 default:
 2055                         fdrop(fp, td);
 2056                         return (EINVAL);
 2057                 }
 2058                 error = (fo_ioctl(fp, KDSKBMODE, (caddr_t)&kbdmode,
 2059                     td->td_ucred, td));
 2060                 break;
 2061         }
 2062 
 2063         case LINUX_VT_OPENQRY:
 2064                 args->cmd = VT_OPENQRY;
 2065                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2066                 break;
 2067 
 2068         case LINUX_VT_GETMODE:
 2069                 args->cmd = VT_GETMODE;
 2070                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2071                 break;
 2072 
 2073         case LINUX_VT_SETMODE: {
 2074                 struct vt_mode mode;
 2075                 if ((error = copyin((void *)args->arg, &mode, sizeof(mode))))
 2076                         break;
 2077                 if (LINUX_SIG_VALID(mode.relsig))
 2078                         mode.relsig = linux_to_bsd_signal(mode.relsig);
 2079                 else
 2080                         mode.relsig = 0;
 2081                 if (LINUX_SIG_VALID(mode.acqsig))
 2082                         mode.acqsig = linux_to_bsd_signal(mode.acqsig);
 2083                 else
 2084                         mode.acqsig = 0;
 2085                 /* XXX. Linux ignores frsig and set it to 0. */
 2086                 mode.frsig = 0;
 2087                 if ((error = copyout(&mode, (void *)args->arg, sizeof(mode))))
 2088                         break;
 2089                 args->cmd = VT_SETMODE;
 2090                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2091                 break;
 2092         }
 2093 
 2094         case LINUX_VT_GETSTATE:
 2095                 args->cmd = VT_GETACTIVE;
 2096                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2097                 break;
 2098 
 2099         case LINUX_VT_RELDISP:
 2100                 args->cmd = VT_RELDISP;
 2101                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2102                 break;
 2103 
 2104         case LINUX_VT_ACTIVATE:
 2105                 args->cmd = VT_ACTIVATE;
 2106                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2107                 break;
 2108 
 2109         case LINUX_VT_WAITACTIVE:
 2110                 args->cmd = VT_WAITACTIVE;
 2111                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2112                 break;
 2113 
 2114         default:
 2115                 error = ENOIOCTL;
 2116                 break;
 2117         }
 2118 
 2119         fdrop(fp, td);
 2120         return (error);
 2121 }
 2122 
 2123 /*
 2124  * Criteria for interface name translation
 2125  */
 2126 #define IFP_IS_ETH(ifp) (ifp->if_type == IFT_ETHER)
 2127 
 2128 /*
 2129  * Translate a Linux interface name to a FreeBSD interface name,
 2130  * and return the associated ifnet structure
 2131  * bsdname and lxname need to be least IFNAMSIZ bytes long, but
 2132  * can point to the same buffer.
 2133  */
 2134 
 2135 static struct ifnet *
 2136 ifname_linux_to_bsd(struct thread *td, const char *lxname, char *bsdname)
 2137 {
 2138         struct ifnet *ifp;
 2139         int len, unit;
 2140         char *ep;
 2141         int is_eth, index;
 2142 
 2143         for (len = 0; len < LINUX_IFNAMSIZ; ++len)
 2144                 if (!isalpha(lxname[len]))
 2145                         break;
 2146         if (len == 0 || len == LINUX_IFNAMSIZ)
 2147                 return (NULL);
 2148         unit = (int)strtoul(lxname + len, &ep, 10);
 2149         if (ep == NULL || ep == lxname + len || ep >= lxname + LINUX_IFNAMSIZ)
 2150                 return (NULL);
 2151         index = 0;
 2152         is_eth = (len == 3 && !strncmp(lxname, "eth", len)) ? 1 : 0;
 2153         CURVNET_SET(TD_TO_VNET(td));
 2154         IFNET_RLOCK();
 2155         CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2156                 /*
 2157                  * Allow Linux programs to use FreeBSD names. Don't presume
 2158                  * we never have an interface named "eth", so don't make
 2159                  * the test optional based on is_eth.
 2160                  */
 2161                 if (strncmp(ifp->if_xname, lxname, LINUX_IFNAMSIZ) == 0)
 2162                         break;
 2163                 if (is_eth && IFP_IS_ETH(ifp) && unit == index++)
 2164                         break;
 2165         }
 2166         IFNET_RUNLOCK();
 2167         CURVNET_RESTORE();
 2168         if (ifp != NULL)
 2169                 strlcpy(bsdname, ifp->if_xname, IFNAMSIZ);
 2170         return (ifp);
 2171 }
 2172 
 2173 /*
 2174  * Implement the SIOCGIFNAME ioctl
 2175  */
 2176 
 2177 static int
 2178 linux_ioctl_ifname(struct thread *td, struct l_ifreq *uifr)
 2179 {
 2180         struct l_ifreq ifr;
 2181         struct ifnet *ifp;
 2182         int error, ethno, index;
 2183 
 2184         error = copyin(uifr, &ifr, sizeof(ifr));
 2185         if (error != 0)
 2186                 return (error);
 2187 
 2188         CURVNET_SET(TD_TO_VNET(curthread));
 2189         IFNET_RLOCK();
 2190         index = 1;      /* ifr.ifr_ifindex starts from 1 */
 2191         ethno = 0;
 2192         error = ENODEV;
 2193         CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2194                 if (ifr.ifr_ifindex == index) {
 2195                         if (IFP_IS_ETH(ifp))
 2196                                 snprintf(ifr.ifr_name, LINUX_IFNAMSIZ,
 2197                                     "eth%d", ethno);
 2198                         else
 2199                                 strlcpy(ifr.ifr_name, ifp->if_xname,
 2200                                     LINUX_IFNAMSIZ);
 2201                         error = 0;
 2202                         break;
 2203                 }
 2204                 if (IFP_IS_ETH(ifp))
 2205                         ethno++;
 2206                 index++;
 2207         }
 2208         IFNET_RUNLOCK();
 2209         if (error == 0)
 2210                 error = copyout(&ifr, uifr, sizeof(ifr));
 2211         CURVNET_RESTORE();
 2212 
 2213         return (error);
 2214 }
 2215 
 2216 /*
 2217  * Implement the SIOCGIFCONF ioctl
 2218  */
 2219 
 2220 static int
 2221 linux_ifconf(struct thread *td, struct ifconf *uifc)
 2222 {
 2223 #ifdef COMPAT_LINUX32
 2224         struct l_ifconf ifc;
 2225 #else
 2226         struct ifconf ifc;
 2227 #endif
 2228         struct l_ifreq ifr;
 2229         struct ifnet *ifp;
 2230         struct ifaddr *ifa;
 2231         struct sbuf *sb;
 2232         int error, ethno, full = 0, valid_len, max_len;
 2233 
 2234         error = copyin(uifc, &ifc, sizeof(ifc));
 2235         if (error != 0)
 2236                 return (error);
 2237 
 2238         max_len = MAXPHYS - 1;
 2239 
 2240         CURVNET_SET(TD_TO_VNET(td));
 2241         /* handle the 'request buffer size' case */
 2242         if ((l_uintptr_t)ifc.ifc_buf == PTROUT(NULL)) {
 2243                 ifc.ifc_len = 0;
 2244                 IFNET_RLOCK();
 2245                 CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2246                         CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2247                                 struct sockaddr *sa = ifa->ifa_addr;
 2248                                 if (sa->sa_family == AF_INET)
 2249                                         ifc.ifc_len += sizeof(ifr);
 2250                         }
 2251                 }
 2252                 IFNET_RUNLOCK();
 2253                 error = copyout(&ifc, uifc, sizeof(ifc));
 2254                 CURVNET_RESTORE();
 2255                 return (error);
 2256         }
 2257 
 2258         if (ifc.ifc_len <= 0) {
 2259                 CURVNET_RESTORE();
 2260                 return (EINVAL);
 2261         }
 2262 
 2263 again:
 2264         /* Keep track of eth interfaces */
 2265         ethno = 0;
 2266         if (ifc.ifc_len <= max_len) {
 2267                 max_len = ifc.ifc_len;
 2268                 full = 1;
 2269         }
 2270         sb = sbuf_new(NULL, NULL, max_len + 1, SBUF_FIXEDLEN);
 2271         max_len = 0;
 2272         valid_len = 0;
 2273 
 2274         /* Return all AF_INET addresses of all interfaces */
 2275         IFNET_RLOCK();
 2276         CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2277                 int addrs = 0;
 2278 
 2279                 bzero(&ifr, sizeof(ifr));
 2280                 if (IFP_IS_ETH(ifp))
 2281                         snprintf(ifr.ifr_name, LINUX_IFNAMSIZ, "eth%d",
 2282                             ethno++);
 2283                 else
 2284                         strlcpy(ifr.ifr_name, ifp->if_xname, LINUX_IFNAMSIZ);
 2285 
 2286                 /* Walk the address list */
 2287                 CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2288                         struct sockaddr *sa = ifa->ifa_addr;
 2289 
 2290                         if (sa->sa_family == AF_INET) {
 2291                                 ifr.ifr_addr.sa_family = LINUX_AF_INET;
 2292                                 memcpy(ifr.ifr_addr.sa_data, sa->sa_data,
 2293                                     sizeof(ifr.ifr_addr.sa_data));
 2294                                 sbuf_bcat(sb, &ifr, sizeof(ifr));
 2295                                 max_len += sizeof(ifr);
 2296                                 addrs++;
 2297                         }
 2298 
 2299                         if (sbuf_error(sb) == 0)
 2300                                 valid_len = sbuf_len(sb);
 2301                 }
 2302                 if (addrs == 0) {
 2303                         bzero((caddr_t)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
 2304                         sbuf_bcat(sb, &ifr, sizeof(ifr));
 2305                         max_len += sizeof(ifr);
 2306 
 2307                         if (sbuf_error(sb) == 0)
 2308                                 valid_len = sbuf_len(sb);
 2309                 }
 2310         }
 2311         IFNET_RUNLOCK();
 2312 
 2313         if (valid_len != max_len && !full) {
 2314                 sbuf_delete(sb);
 2315                 goto again;
 2316         }
 2317 
 2318         ifc.ifc_len = valid_len;
 2319         sbuf_finish(sb);
 2320         error = copyout(sbuf_data(sb), PTRIN(ifc.ifc_buf), ifc.ifc_len);
 2321         if (error == 0)
 2322                 error = copyout(&ifc, uifc, sizeof(ifc));
 2323         sbuf_delete(sb);
 2324         CURVNET_RESTORE();
 2325 
 2326         return (error);
 2327 }
 2328 
 2329 static int
 2330 linux_gifflags(struct thread *td, struct ifnet *ifp, struct l_ifreq *ifr)
 2331 {
 2332         l_short flags;
 2333 
 2334         flags = (ifp->if_flags | ifp->if_drv_flags) & 0xffff;
 2335         /* these flags have no Linux equivalent */
 2336         flags &= ~(IFF_DRV_OACTIVE|IFF_SIMPLEX|
 2337             IFF_LINK0|IFF_LINK1|IFF_LINK2);
 2338         /* Linux' multicast flag is in a different bit */
 2339         if (flags & IFF_MULTICAST) {
 2340                 flags &= ~IFF_MULTICAST;
 2341                 flags |= 0x1000;
 2342         }
 2343 
 2344         return (copyout(&flags, &ifr->ifr_flags, sizeof(flags)));
 2345 }
 2346 
 2347 #define ARPHRD_ETHER    1
 2348 #define ARPHRD_LOOPBACK 772
 2349 
 2350 static int
 2351 linux_gifhwaddr(struct ifnet *ifp, struct l_ifreq *ifr)
 2352 {
 2353         struct ifaddr *ifa;
 2354         struct sockaddr_dl *sdl;
 2355         struct l_sockaddr lsa;
 2356 
 2357         if (ifp->if_type == IFT_LOOP) {
 2358                 bzero(&lsa, sizeof(lsa));
 2359                 lsa.sa_family = ARPHRD_LOOPBACK;
 2360                 return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof(lsa)));
 2361         }
 2362 
 2363         if (ifp->if_type != IFT_ETHER)
 2364                 return (ENOENT);
 2365 
 2366         CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2367                 sdl = (struct sockaddr_dl*)ifa->ifa_addr;
 2368                 if (sdl != NULL && (sdl->sdl_family == AF_LINK) &&
 2369                     (sdl->sdl_type == IFT_ETHER)) {
 2370                         bzero(&lsa, sizeof(lsa));
 2371                         lsa.sa_family = ARPHRD_ETHER;
 2372                         bcopy(LLADDR(sdl), lsa.sa_data, LINUX_IFHWADDRLEN);
 2373                         return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof(lsa)));
 2374                 }
 2375         }
 2376 
 2377         return (ENOENT);
 2378 }
 2379 
 2380 
 2381  /*
 2382 * If we fault in bsd_to_linux_ifreq() then we will fault when we call
 2383 * the native ioctl().  Thus, we don't really need to check the return
 2384 * value of this function.
 2385 */
 2386 static int
 2387 bsd_to_linux_ifreq(struct ifreq *arg)
 2388 {
 2389         struct ifreq ifr;
 2390         size_t ifr_len = sizeof(struct ifreq);
 2391         int error;
 2392 
 2393         if ((error = copyin(arg, &ifr, ifr_len)))
 2394                 return (error);
 2395 
 2396         *(u_short *)&ifr.ifr_addr = ifr.ifr_addr.sa_family;
 2397 
 2398         error = copyout(&ifr, arg, ifr_len);
 2399 
 2400         return (error);
 2401 }
 2402 
 2403 /*
 2404  * Socket related ioctls
 2405  */
 2406 
 2407 static int
 2408 linux_ioctl_socket(struct thread *td, struct linux_ioctl_args *args)
 2409 {
 2410         char lifname[LINUX_IFNAMSIZ], ifname[IFNAMSIZ];
 2411         struct ifnet *ifp;
 2412         struct file *fp;
 2413         int error, type;
 2414 
 2415         ifp = NULL;
 2416         error = 0;
 2417 
 2418         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 2419         if (error != 0)
 2420                 return (error);
 2421         type = fp->f_type;
 2422         fdrop(fp, td);
 2423         if (type != DTYPE_SOCKET) {
 2424                 /* not a socket - probably a tap / vmnet device */
 2425                 switch (args->cmd) {
 2426                 case LINUX_SIOCGIFADDR:
 2427                 case LINUX_SIOCSIFADDR:
 2428                 case LINUX_SIOCGIFFLAGS:
 2429                         return (linux_ioctl_special(td, args));
 2430                 default:
 2431                         return (ENOIOCTL);
 2432                 }
 2433         }
 2434 
 2435         switch (args->cmd & 0xffff) {
 2436 
 2437         case LINUX_FIOGETOWN:
 2438         case LINUX_FIOSETOWN:
 2439         case LINUX_SIOCADDMULTI:
 2440         case LINUX_SIOCATMARK:
 2441         case LINUX_SIOCDELMULTI:
 2442         case LINUX_SIOCGIFNAME:
 2443         case LINUX_SIOCGIFCONF:
 2444         case LINUX_SIOCGPGRP:
 2445         case LINUX_SIOCSPGRP:
 2446         case LINUX_SIOCGIFCOUNT:
 2447                 /* these ioctls don't take an interface name */
 2448 #ifdef DEBUG
 2449                 printf("%s(): ioctl %d\n", __func__,
 2450                     args->cmd & 0xffff);
 2451 #endif
 2452                 break;
 2453 
 2454         case LINUX_SIOCGIFFLAGS:
 2455         case LINUX_SIOCGIFADDR:
 2456         case LINUX_SIOCSIFADDR:
 2457         case LINUX_SIOCGIFDSTADDR:
 2458         case LINUX_SIOCGIFBRDADDR:
 2459         case LINUX_SIOCGIFNETMASK:
 2460         case LINUX_SIOCSIFNETMASK:
 2461         case LINUX_SIOCGIFMTU:
 2462         case LINUX_SIOCSIFMTU:
 2463         case LINUX_SIOCSIFNAME:
 2464         case LINUX_SIOCGIFHWADDR:
 2465         case LINUX_SIOCSIFHWADDR:
 2466         case LINUX_SIOCDEVPRIVATE:
 2467         case LINUX_SIOCDEVPRIVATE+1:
 2468         case LINUX_SIOCGIFINDEX:
 2469                 /* copy in the interface name and translate it. */
 2470                 error = copyin((void *)args->arg, lifname, LINUX_IFNAMSIZ);
 2471                 if (error != 0)
 2472                         return (error);
 2473 #ifdef DEBUG
 2474                 printf("%s(): ioctl %d on %.*s\n", __func__,
 2475                     args->cmd & 0xffff, LINUX_IFNAMSIZ, lifname);
 2476 #endif
 2477                 memset(ifname, 0, sizeof(ifname));
 2478                 ifp = ifname_linux_to_bsd(td, lifname, ifname);
 2479                 if (ifp == NULL)
 2480                         return (EINVAL);
 2481                 /*
 2482                  * We need to copy it back out in case we pass the
 2483                  * request on to our native ioctl(), which will expect
 2484                  * the ifreq to be in user space and have the correct
 2485                  * interface name.
 2486                  */
 2487                 error = copyout(ifname, (void *)args->arg, IFNAMSIZ);
 2488                 if (error != 0)
 2489                         return (error);
 2490 #ifdef DEBUG
 2491                 printf("%s(): %s translated to %s\n", __func__,
 2492                     lifname, ifname);
 2493 #endif
 2494                 break;
 2495 
 2496         default:
 2497                 return (ENOIOCTL);
 2498         }
 2499 
 2500         switch (args->cmd & 0xffff) {
 2501 
 2502         case LINUX_FIOSETOWN:
 2503                 args->cmd = FIOSETOWN;
 2504                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2505                 break;
 2506 
 2507         case LINUX_SIOCSPGRP:
 2508                 args->cmd = SIOCSPGRP;
 2509                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2510                 break;
 2511 
 2512         case LINUX_FIOGETOWN:
 2513                 args->cmd = FIOGETOWN;
 2514                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2515                 break;
 2516 
 2517         case LINUX_SIOCGPGRP:
 2518                 args->cmd = SIOCGPGRP;
 2519                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2520                 break;
 2521 
 2522         case LINUX_SIOCATMARK:
 2523                 args->cmd = SIOCATMARK;
 2524                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2525                 break;
 2526 
 2527         /* LINUX_SIOCGSTAMP */
 2528 
 2529         case LINUX_SIOCGIFNAME:
 2530                 error = linux_ioctl_ifname(td, (struct l_ifreq *)args->arg);
 2531                 break;
 2532 
 2533         case LINUX_SIOCGIFCONF:
 2534                 error = linux_ifconf(td, (struct ifconf *)args->arg);
 2535                 break;
 2536 
 2537         case LINUX_SIOCGIFFLAGS:
 2538                 args->cmd = SIOCGIFFLAGS;
 2539                 error = linux_gifflags(td, ifp, (struct l_ifreq *)args->arg);
 2540                 break;
 2541 
 2542         case LINUX_SIOCGIFADDR:
 2543                 args->cmd = SIOCGIFADDR;
 2544                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2545                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2546                 break;
 2547 
 2548         case LINUX_SIOCSIFADDR:
 2549                 /* XXX probably doesn't work, included for completeness */
 2550                 args->cmd = SIOCSIFADDR;
 2551                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2552                 break;
 2553 
 2554         case LINUX_SIOCGIFDSTADDR:
 2555                 args->cmd = SIOCGIFDSTADDR;
 2556                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2557                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2558                 break;
 2559 
 2560         case LINUX_SIOCGIFBRDADDR:
 2561                 args->cmd = SIOCGIFBRDADDR;
 2562                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2563                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2564                 break;
 2565 
 2566         case LINUX_SIOCGIFNETMASK:
 2567                 args->cmd = SIOCGIFNETMASK;
 2568                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2569                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2570                 break;
 2571 
 2572         case LINUX_SIOCSIFNETMASK:
 2573                 error = ENOIOCTL;
 2574                 break;
 2575 
 2576         case LINUX_SIOCGIFMTU:
 2577                 args->cmd = SIOCGIFMTU;
 2578                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2579                 break;
 2580 
 2581         case LINUX_SIOCSIFMTU:
 2582                 args->cmd = SIOCSIFMTU;
 2583                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2584                 break;
 2585 
 2586         case LINUX_SIOCSIFNAME:
 2587                 error = ENOIOCTL;
 2588                 break;
 2589 
 2590         case LINUX_SIOCGIFHWADDR:
 2591                 error = linux_gifhwaddr(ifp, (struct l_ifreq *)args->arg);
 2592                 break;
 2593 
 2594         case LINUX_SIOCSIFHWADDR:
 2595                 error = ENOIOCTL;
 2596                 break;
 2597 
 2598         case LINUX_SIOCADDMULTI:
 2599                 args->cmd = SIOCADDMULTI;
 2600                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2601                 break;
 2602 
 2603         case LINUX_SIOCDELMULTI:
 2604                 args->cmd = SIOCDELMULTI;
 2605                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2606                 break;
 2607 
 2608         case LINUX_SIOCGIFINDEX:
 2609                 args->cmd = SIOCGIFINDEX;
 2610                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2611                 break;
 2612 
 2613         case LINUX_SIOCGIFCOUNT:
 2614                 error = 0;
 2615                 break;
 2616 
 2617         /*
 2618          * XXX This is slightly bogus, but these ioctls are currently
 2619          * XXX only used by the aironet (if_an) network driver.
 2620          */
 2621         case LINUX_SIOCDEVPRIVATE:
 2622                 args->cmd = SIOCGPRIVATE_0;
 2623                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2624                 break;
 2625 
 2626         case LINUX_SIOCDEVPRIVATE+1:
 2627                 args->cmd = SIOCGPRIVATE_1;
 2628                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2629                 break;
 2630         }
 2631 
 2632         if (ifp != NULL)
 2633                 /* restore the original interface name */
 2634                 copyout(lifname, (void *)args->arg, LINUX_IFNAMSIZ);
 2635 
 2636 #ifdef DEBUG
 2637         printf("%s(): returning %d\n", __func__, error);
 2638 #endif
 2639         return (error);
 2640 }
 2641 
 2642 /*
 2643  * Device private ioctl handler
 2644  */
 2645 static int
 2646 linux_ioctl_private(struct thread *td, struct linux_ioctl_args *args)
 2647 {
 2648         struct file *fp;
 2649         int error, type;
 2650 
 2651         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 2652         if (error != 0)
 2653                 return (error);
 2654         type = fp->f_type;
 2655         fdrop(fp, td);
 2656         if (type == DTYPE_SOCKET)
 2657                 return (linux_ioctl_socket(td, args));
 2658         return (ENOIOCTL);
 2659 }
 2660 
 2661 /*
 2662  * DRM ioctl handler (sys/dev/drm)
 2663  */
 2664 static int
 2665 linux_ioctl_drm(struct thread *td, struct linux_ioctl_args *args)
 2666 {
 2667         args->cmd = SETDIR(args->cmd);
 2668         return (sys_ioctl(td, (struct ioctl_args *)args));
 2669 }
 2670 
 2671 #ifdef COMPAT_LINUX32
 2672 #define CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0)
 2673 #define PTRIN_CP(src,dst,fld) \
 2674         do { (dst).fld = PTRIN((src).fld); } while (0)
 2675 #define PTROUT_CP(src,dst,fld) \
 2676         do { (dst).fld = PTROUT((src).fld); } while (0)
 2677 
 2678 static int
 2679 linux_ioctl_sg_io(struct thread *td, struct linux_ioctl_args *args)
 2680 {
 2681         struct sg_io_hdr io;
 2682         struct sg_io_hdr32 io32;
 2683         struct file *fp;
 2684         int error;
 2685 
 2686         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 2687         if (error != 0) {
 2688                 printf("sg_linux_ioctl: fget returned %d\n", error);
 2689                 return (error);
 2690         }
 2691 
 2692         if ((error = copyin((void *)args->arg, &io32, sizeof(io32))) != 0)
 2693                 goto out;
 2694 
 2695         CP(io32, io, interface_id);
 2696         CP(io32, io, dxfer_direction);
 2697         CP(io32, io, cmd_len);
 2698         CP(io32, io, mx_sb_len);
 2699         CP(io32, io, iovec_count);
 2700         CP(io32, io, dxfer_len);
 2701         PTRIN_CP(io32, io, dxferp);
 2702         PTRIN_CP(io32, io, cmdp);
 2703         PTRIN_CP(io32, io, sbp);
 2704         CP(io32, io, timeout);
 2705         CP(io32, io, flags);
 2706         CP(io32, io, pack_id);
 2707         PTRIN_CP(io32, io, usr_ptr);
 2708         CP(io32, io, status);
 2709         CP(io32, io, masked_status);
 2710         CP(io32, io, msg_status);
 2711         CP(io32, io, sb_len_wr);
 2712         CP(io32, io, host_status);
 2713         CP(io32, io, driver_status);
 2714         CP(io32, io, resid);
 2715         CP(io32, io, duration);
 2716         CP(io32, io, info);
 2717 
 2718         if ((error = fo_ioctl(fp, SG_IO, (caddr_t)&io, td->td_ucred, td)) != 0)
 2719                 goto out;
 2720 
 2721         CP(io, io32, interface_id);
 2722         CP(io, io32, dxfer_direction);
 2723         CP(io, io32, cmd_len);
 2724         CP(io, io32, mx_sb_len);
 2725         CP(io, io32, iovec_count);
 2726         CP(io, io32, dxfer_len);
 2727         PTROUT_CP(io, io32, dxferp);
 2728         PTROUT_CP(io, io32, cmdp);
 2729         PTROUT_CP(io, io32, sbp);
 2730         CP(io, io32, timeout);
 2731         CP(io, io32, flags);
 2732         CP(io, io32, pack_id);
 2733         PTROUT_CP(io, io32, usr_ptr);
 2734         CP(io, io32, status);
 2735         CP(io, io32, masked_status);
 2736         CP(io, io32, msg_status);
 2737         CP(io, io32, sb_len_wr);
 2738         CP(io, io32, host_status);
 2739         CP(io, io32, driver_status);
 2740         CP(io, io32, resid);
 2741         CP(io, io32, duration);
 2742         CP(io, io32, info);
 2743 
 2744         error = copyout(&io32, (void *)args->arg, sizeof(io32));
 2745 
 2746 out:
 2747         fdrop(fp, td);
 2748         return (error);
 2749 }
 2750 #endif
 2751 
 2752 static int
 2753 linux_ioctl_sg(struct thread *td, struct linux_ioctl_args *args)
 2754 {
 2755 
 2756         switch (args->cmd) {
 2757         case LINUX_SG_GET_VERSION_NUM:
 2758                 args->cmd = SG_GET_VERSION_NUM;
 2759                 break;
 2760         case LINUX_SG_SET_TIMEOUT:
 2761                 args->cmd = SG_SET_TIMEOUT;
 2762                 break;
 2763         case LINUX_SG_GET_TIMEOUT:
 2764                 args->cmd = SG_GET_TIMEOUT;
 2765                 break;
 2766         case LINUX_SG_IO:
 2767                 args->cmd = SG_IO;
 2768 #ifdef COMPAT_LINUX32
 2769                 return (linux_ioctl_sg_io(td, args));
 2770 #endif
 2771                 break;
 2772         case LINUX_SG_GET_RESERVED_SIZE:
 2773                 args->cmd = SG_GET_RESERVED_SIZE;
 2774                 break;
 2775         case LINUX_SG_GET_SCSI_ID:
 2776                 args->cmd = SG_GET_SCSI_ID;
 2777                 break;
 2778         case LINUX_SG_GET_SG_TABLESIZE:
 2779                 args->cmd = SG_GET_SG_TABLESIZE;
 2780                 break;
 2781         default:
 2782                 return (ENODEV);
 2783         }
 2784         return (sys_ioctl(td, (struct ioctl_args *)args));
 2785 }
 2786 
 2787 /*
 2788  * Video4Linux (V4L) ioctl handler
 2789  */
 2790 static int
 2791 linux_to_bsd_v4l_tuner(struct l_video_tuner *lvt, struct video_tuner *vt)
 2792 {
 2793         vt->tuner = lvt->tuner;
 2794         strlcpy(vt->name, lvt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
 2795         vt->rangelow = lvt->rangelow;   /* possible long size conversion */
 2796         vt->rangehigh = lvt->rangehigh; /* possible long size conversion */
 2797         vt->flags = lvt->flags;
 2798         vt->mode = lvt->mode;
 2799         vt->signal = lvt->signal;
 2800         return (0);
 2801 }
 2802 
 2803 static int
 2804 bsd_to_linux_v4l_tuner(struct video_tuner *vt, struct l_video_tuner *lvt)
 2805 {
 2806         lvt->tuner = vt->tuner;
 2807         strlcpy(lvt->name, vt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
 2808         lvt->rangelow = vt->rangelow;   /* possible long size conversion */
 2809         lvt->rangehigh = vt->rangehigh; /* possible long size conversion */
 2810         lvt->flags = vt->flags;
 2811         lvt->mode = vt->mode;
 2812         lvt->signal = vt->signal;
 2813         return (0);
 2814 }
 2815 
 2816 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2817 static int
 2818 linux_to_bsd_v4l_clip(struct l_video_clip *lvc, struct video_clip *vc)
 2819 {
 2820         vc->x = lvc->x;
 2821         vc->y = lvc->y;
 2822         vc->width = lvc->width;
 2823         vc->height = lvc->height;
 2824         vc->next = PTRIN(lvc->next);    /* possible pointer size conversion */
 2825         return (0);
 2826 }
 2827 #endif
 2828 
 2829 static int
 2830 linux_to_bsd_v4l_window(struct l_video_window *lvw, struct video_window *vw)
 2831 {
 2832         vw->x = lvw->x;
 2833         vw->y = lvw->y;
 2834         vw->width = lvw->width;
 2835         vw->height = lvw->height;
 2836         vw->chromakey = lvw->chromakey;
 2837         vw->flags = lvw->flags;
 2838         vw->clips = PTRIN(lvw->clips);  /* possible pointer size conversion */
 2839         vw->clipcount = lvw->clipcount;
 2840         return (0);
 2841 }
 2842 
 2843 static int
 2844 bsd_to_linux_v4l_window(struct video_window *vw, struct l_video_window *lvw)
 2845 {
 2846         lvw->x = vw->x;
 2847         lvw->y = vw->y;
 2848         lvw->width = vw->width;
 2849         lvw->height = vw->height;
 2850         lvw->chromakey = vw->chromakey;
 2851         lvw->flags = vw->flags;
 2852         lvw->clips = PTROUT(vw->clips); /* possible pointer size conversion */
 2853         lvw->clipcount = vw->clipcount;
 2854         return (0);
 2855 }
 2856 
 2857 static int
 2858 linux_to_bsd_v4l_buffer(struct l_video_buffer *lvb, struct video_buffer *vb)
 2859 {
 2860         vb->base = PTRIN(lvb->base);    /* possible pointer size conversion */
 2861         vb->height = lvb->height;
 2862         vb->width = lvb->width;
 2863         vb->depth = lvb->depth;
 2864         vb->bytesperline = lvb->bytesperline;
 2865         return (0);
 2866 }
 2867 
 2868 static int
 2869 bsd_to_linux_v4l_buffer(struct video_buffer *vb, struct l_video_buffer *lvb)
 2870 {
 2871         lvb->base = PTROUT(vb->base);   /* possible pointer size conversion */
 2872         lvb->height = vb->height;
 2873         lvb->width = vb->width;
 2874         lvb->depth = vb->depth;
 2875         lvb->bytesperline = vb->bytesperline;
 2876         return (0);
 2877 }
 2878 
 2879 static int
 2880 linux_to_bsd_v4l_code(struct l_video_code *lvc, struct video_code *vc)
 2881 {
 2882         strlcpy(vc->loadwhat, lvc->loadwhat, LINUX_VIDEO_CODE_LOADWHAT_SIZE);
 2883         vc->datasize = lvc->datasize;
 2884         vc->data = PTRIN(lvc->data);    /* possible pointer size conversion */
 2885         return (0);
 2886 }
 2887 
 2888 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2889 static int
 2890 linux_v4l_clip_copy(void *lvc, struct video_clip **ppvc)
 2891 {
 2892         int error;
 2893         struct video_clip vclip;
 2894         struct l_video_clip l_vclip;
 2895 
 2896         error = copyin(lvc, &l_vclip, sizeof(l_vclip));
 2897         if (error) return (error);
 2898         linux_to_bsd_v4l_clip(&l_vclip, &vclip);
 2899         /* XXX: If there can be no concurrency: s/M_NOWAIT/M_WAITOK/ */
 2900         if ((*ppvc = malloc(sizeof(**ppvc), M_LINUX, M_NOWAIT)) == NULL)
 2901                 return (ENOMEM);    /* XXX: Linux has no ENOMEM here. */
 2902         memcpy(*ppvc, &vclip, sizeof(vclip));
 2903         (*ppvc)->next = NULL;
 2904         return (0);
 2905 }
 2906 
 2907 static int
 2908 linux_v4l_cliplist_free(struct video_window *vw)
 2909 {
 2910         struct video_clip **ppvc;
 2911         struct video_clip **ppvc_next;
 2912 
 2913         for (ppvc = &(vw->clips); *ppvc != NULL; ppvc = ppvc_next) {
 2914                 ppvc_next = &((*ppvc)->next);
 2915                 free(*ppvc, M_LINUX);
 2916         }
 2917         vw->clips = NULL;
 2918 
 2919         return (0);
 2920 }
 2921 
 2922 static int
 2923 linux_v4l_cliplist_copy(struct l_video_window *lvw, struct video_window *vw)
 2924 {
 2925         int error;
 2926         int clipcount;
 2927         void *plvc;
 2928         struct video_clip **ppvc;
 2929 
 2930         /*
 2931          * XXX: The cliplist is used to pass in a list of clipping
 2932          *      rectangles or, if clipcount == VIDEO_CLIP_BITMAP, a
 2933          *      clipping bitmap.  Some Linux apps, however, appear to
 2934          *      leave cliplist and clips uninitialized.  In any case,
 2935          *      the cliplist is not used by pwc(4), at the time of
 2936          *      writing, FreeBSD's only V4L driver.  When a driver
 2937          *      that uses the cliplist is developed, this code may
 2938          *      need re-examiniation.
 2939          */
 2940         error = 0;
 2941         clipcount = vw->clipcount;
 2942         if (clipcount == VIDEO_CLIP_BITMAP) {
 2943                 /*
 2944                  * In this case, the pointer (clips) is overloaded
 2945                  * to be a "void *" to a bitmap, therefore there
 2946                  * is no struct video_clip to copy now.
 2947                  */
 2948         } else if (clipcount > 0 && clipcount <= 16384) {
 2949                 /*
 2950                  * Clips points to list of clip rectangles, so
 2951                  * copy the list.
 2952                  *
 2953                  * XXX: Upper limit of 16384 was used here to try to
 2954                  *      avoid cases when clipcount and clips pointer
 2955                  *      are uninitialized and therefore have high random
 2956                  *      values, as is the case in the Linux Skype
 2957                  *      application.  The value 16384 was chosen as that
 2958                  *      is what is used in the Linux stradis(4) MPEG
 2959                  *      decoder driver, the only place we found an
 2960                  *      example of cliplist use.
 2961                  */
 2962                 plvc = PTRIN(lvw->clips);
 2963                 vw->clips = NULL;
 2964                 ppvc = &(vw->clips);
 2965                 while (clipcount-- > 0) {
 2966                         if (plvc == NULL) {
 2967                                 error = EFAULT;
 2968                                 break;
 2969                         } else {
 2970                                 error = linux_v4l_clip_copy(plvc, ppvc);
 2971                                 if (error) {
 2972                                         linux_v4l_cliplist_free(vw);
 2973                                         break;
 2974                                 }
 2975                         }
 2976                         ppvc = &((*ppvc)->next);
 2977                         plvc = PTRIN(((struct l_video_clip *) plvc)->next);
 2978                 }
 2979         } else {
 2980                 /*
 2981                  * clipcount == 0 or negative (but not VIDEO_CLIP_BITMAP)
 2982                  * Force cliplist to null.
 2983                  */
 2984                 vw->clipcount = 0;
 2985                 vw->clips = NULL;
 2986         }
 2987         return (error);
 2988 }
 2989 #endif
 2990 
 2991 static int
 2992 linux_ioctl_v4l(struct thread *td, struct linux_ioctl_args *args)
 2993 {
 2994         struct file *fp;
 2995         int error;
 2996         struct video_tuner vtun;
 2997         struct video_window vwin;
 2998         struct video_buffer vbuf;
 2999         struct video_code vcode;
 3000         struct l_video_tuner l_vtun;
 3001         struct l_video_window l_vwin;
 3002         struct l_video_buffer l_vbuf;
 3003         struct l_video_code l_vcode;
 3004 
 3005         switch (args->cmd & 0xffff) {
 3006         case LINUX_VIDIOCGCAP:          args->cmd = VIDIOCGCAP; break;
 3007         case LINUX_VIDIOCGCHAN:         args->cmd = VIDIOCGCHAN; break;
 3008         case LINUX_VIDIOCSCHAN:         args->cmd = VIDIOCSCHAN; break;
 3009 
 3010         case LINUX_VIDIOCGTUNER:
 3011                 error = fget(td, args->fd,
 3012                     &cap_ioctl_rights, &fp);
 3013                 if (error != 0)
 3014                         return (error);
 3015                 error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
 3016                 if (error) {
 3017                         fdrop(fp, td);
 3018                         return (error);
 3019                 }
 3020                 linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
 3021                 error = fo_ioctl(fp, VIDIOCGTUNER, &vtun, td->td_ucred, td);
 3022                 if (!error) {
 3023                         bsd_to_linux_v4l_tuner(&vtun, &l_vtun);
 3024                         error = copyout(&l_vtun, (void *) args->arg,
 3025                             sizeof(l_vtun));
 3026                 }
 3027                 fdrop(fp, td);
 3028                 return (error);
 3029 
 3030         case LINUX_VIDIOCSTUNER:
 3031                 error = fget(td, args->fd,
 3032                     &cap_ioctl_rights, &fp);
 3033                 if (error != 0)
 3034                         return (error);
 3035                 error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
 3036                 if (error) {
 3037                         fdrop(fp, td);
 3038                         return (error);
 3039                 }
 3040                 linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
 3041                 error = fo_ioctl(fp, VIDIOCSTUNER, &vtun, td->td_ucred, td);
 3042                 fdrop(fp, td);
 3043                 return (error);
 3044 
 3045         case LINUX_VIDIOCGPICT:         args->cmd = VIDIOCGPICT; break;
 3046         case LINUX_VIDIOCSPICT:         args->cmd = VIDIOCSPICT; break;
 3047         case LINUX_VIDIOCCAPTURE:       args->cmd = VIDIOCCAPTURE; break;
 3048 
 3049         case LINUX_VIDIOCGWIN:
 3050                 error = fget(td, args->fd,
 3051                     &cap_ioctl_rights, &fp);
 3052                 if (error != 0)
 3053                         return (error);
 3054                 error = fo_ioctl(fp, VIDIOCGWIN, &vwin, td->td_ucred, td);
 3055                 if (!error) {
 3056                         bsd_to_linux_v4l_window(&vwin, &l_vwin);
 3057                         error = copyout(&l_vwin, (void *) args->arg,
 3058                             sizeof(l_vwin));
 3059                 }
 3060                 fdrop(fp, td);
 3061                 return (error);
 3062 
 3063         case LINUX_VIDIOCSWIN:
 3064                 error = fget(td, args->fd,
 3065                     &cap_ioctl_rights, &fp);
 3066                 if (error != 0)
 3067                         return (error);
 3068                 error = copyin((void *) args->arg, &l_vwin, sizeof(l_vwin));
 3069                 if (error) {
 3070                         fdrop(fp, td);
 3071                         return (error);
 3072                 }
 3073                 linux_to_bsd_v4l_window(&l_vwin, &vwin);
 3074 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 3075                 error = linux_v4l_cliplist_copy(&l_vwin, &vwin);
 3076                 if (error) {
 3077                         fdrop(fp, td);
 3078                         return (error);
 3079                 }
 3080 #endif
 3081                 error = fo_ioctl(fp, VIDIOCSWIN, &vwin, td->td_ucred, td);
 3082                 fdrop(fp, td);
 3083 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 3084                 linux_v4l_cliplist_free(&vwin);
 3085 #endif
 3086                 return (error);
 3087 
 3088         case LINUX_VIDIOCGFBUF:
 3089                 error = fget(td, args->fd,
 3090                     &cap_ioctl_rights, &fp);
 3091                 if (error != 0)
 3092                         return (error);
 3093                 error = fo_ioctl(fp, VIDIOCGFBUF, &vbuf, td->td_ucred, td);
 3094                 if (!error) {
 3095                         bsd_to_linux_v4l_buffer(&vbuf, &l_vbuf);
 3096                         error = copyout(&l_vbuf, (void *) args->arg,
 3097                             sizeof(l_vbuf));
 3098                 }
 3099                 fdrop(fp, td);
 3100                 return (error);
 3101 
 3102         case LINUX_VIDIOCSFBUF:
 3103                 error = fget(td, args->fd,
 3104                     &cap_ioctl_rights, &fp);
 3105                 if (error != 0)
 3106                         return (error);
 3107                 error = copyin((void *) args->arg, &l_vbuf, sizeof(l_vbuf));
 3108                 if (error) {
 3109                         fdrop(fp, td);
 3110                         return (error);
 3111                 }
 3112                 linux_to_bsd_v4l_buffer(&l_vbuf, &vbuf);
 3113                 error = fo_ioctl(fp, VIDIOCSFBUF, &vbuf, td->td_ucred, td);
 3114                 fdrop(fp, td);
 3115                 return (error);
 3116 
 3117         case LINUX_VIDIOCKEY:           args->cmd = VIDIOCKEY; break;
 3118         case LINUX_VIDIOCGFREQ:         args->cmd = VIDIOCGFREQ; break;
 3119         case LINUX_VIDIOCSFREQ:         args->cmd = VIDIOCSFREQ; break;
 3120         case LINUX_VIDIOCGAUDIO:        args->cmd = VIDIOCGAUDIO; break;
 3121         case LINUX_VIDIOCSAUDIO:        args->cmd = VIDIOCSAUDIO; break;
 3122         case LINUX_VIDIOCSYNC:          args->cmd = VIDIOCSYNC; break;
 3123         case LINUX_VIDIOCMCAPTURE:      args->cmd = VIDIOCMCAPTURE; break;
 3124         case LINUX_VIDIOCGMBUF:         args->cmd = VIDIOCGMBUF; break;
 3125         case LINUX_VIDIOCGUNIT:         args->cmd = VIDIOCGUNIT; break;
 3126         case LINUX_VIDIOCGCAPTURE:      args->cmd = VIDIOCGCAPTURE; break;
 3127         case LINUX_VIDIOCSCAPTURE:      args->cmd = VIDIOCSCAPTURE; break;
 3128         case LINUX_VIDIOCSPLAYMODE:     args->cmd = VIDIOCSPLAYMODE; break;
 3129         case LINUX_VIDIOCSWRITEMODE:    args->cmd = VIDIOCSWRITEMODE; break;
 3130         case LINUX_VIDIOCGPLAYINFO:     args->cmd = VIDIOCGPLAYINFO; break;
 3131 
 3132         case LINUX_VIDIOCSMICROCODE:
 3133                 error = fget(td, args->fd,
 3134                     &cap_ioctl_rights, &fp);
 3135                 if (error != 0)
 3136                         return (error);
 3137                 error = copyin((void *) args->arg, &l_vcode, sizeof(l_vcode));
 3138                 if (error) {
 3139                         fdrop(fp, td);
 3140                         return (error);
 3141                 }
 3142                 linux_to_bsd_v4l_code(&l_vcode, &vcode);
 3143                 error = fo_ioctl(fp, VIDIOCSMICROCODE, &vcode, td->td_ucred, td);
 3144                 fdrop(fp, td);
 3145                 return (error);
 3146 
 3147         case LINUX_VIDIOCGVBIFMT:       args->cmd = VIDIOCGVBIFMT; break;
 3148         case LINUX_VIDIOCSVBIFMT:       args->cmd = VIDIOCSVBIFMT; break;
 3149         default:                        return (ENOIOCTL);
 3150         }
 3151 
 3152         error = sys_ioctl(td, (struct ioctl_args *)args);
 3153         return (error);
 3154 }
 3155 
 3156 /*
 3157  * Special ioctl handler
 3158  */
 3159 static int
 3160 linux_ioctl_special(struct thread *td, struct linux_ioctl_args *args)
 3161 {
 3162         int error;
 3163 
 3164         switch (args->cmd) {
 3165         case LINUX_SIOCGIFADDR:
 3166                 args->cmd = SIOCGIFADDR;
 3167                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3168                 break;
 3169         case LINUX_SIOCSIFADDR:
 3170                 args->cmd = SIOCSIFADDR;
 3171                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3172                 break;
 3173         case LINUX_SIOCGIFFLAGS:
 3174                 args->cmd = SIOCGIFFLAGS;
 3175                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3176                 break;
 3177         default:
 3178                 error = ENOIOCTL;
 3179         }
 3180 
 3181         return (error);
 3182 }
 3183 
 3184 static int
 3185 linux_to_bsd_v4l2_standard(struct l_v4l2_standard *lvstd, struct v4l2_standard *vstd)
 3186 {
 3187         vstd->index = lvstd->index;
 3188         vstd->id = lvstd->id;
 3189         CTASSERT(sizeof(vstd->name) == sizeof(lvstd->name));
 3190         memcpy(vstd->name, lvstd->name, sizeof(vstd->name));
 3191         vstd->frameperiod = lvstd->frameperiod;
 3192         vstd->framelines = lvstd->framelines;
 3193         CTASSERT(sizeof(vstd->reserved) == sizeof(lvstd->reserved));
 3194         memcpy(vstd->reserved, lvstd->reserved, sizeof(vstd->reserved));
 3195         return (0);
 3196 }
 3197 
 3198 static int
 3199 bsd_to_linux_v4l2_standard(struct v4l2_standard *vstd, struct l_v4l2_standard *lvstd)
 3200 {
 3201         lvstd->index = vstd->index;
 3202         lvstd->id = vstd->id;
 3203         CTASSERT(sizeof(vstd->name) == sizeof(lvstd->name));
 3204         memcpy(lvstd->name, vstd->name, sizeof(lvstd->name));
 3205         lvstd->frameperiod = vstd->frameperiod;
 3206         lvstd->framelines = vstd->framelines;
 3207         CTASSERT(sizeof(vstd->reserved) == sizeof(lvstd->reserved));
 3208         memcpy(lvstd->reserved, vstd->reserved, sizeof(lvstd->reserved));
 3209         return (0);
 3210 }
 3211 
 3212 static int
 3213 linux_to_bsd_v4l2_buffer(struct l_v4l2_buffer *lvb, struct v4l2_buffer *vb)
 3214 {
 3215         vb->index = lvb->index;
 3216         vb->type = lvb->type;
 3217         vb->bytesused = lvb->bytesused;
 3218         vb->flags = lvb->flags;
 3219         vb->field = lvb->field;
 3220         vb->timestamp.tv_sec = lvb->timestamp.tv_sec;
 3221         vb->timestamp.tv_usec = lvb->timestamp.tv_usec;
 3222         memcpy(&vb->timecode, &lvb->timecode, sizeof (lvb->timecode));
 3223         vb->sequence = lvb->sequence;
 3224         vb->memory = lvb->memory;
 3225         if (lvb->memory == V4L2_MEMORY_USERPTR)
 3226                 /* possible pointer size conversion */
 3227                 vb->m.userptr = (unsigned long)PTRIN(lvb->m.userptr);
 3228         else
 3229                 vb->m.offset = lvb->m.offset;
 3230         vb->length = lvb->length;
 3231         vb->input = lvb->input;
 3232         vb->reserved = lvb->reserved;
 3233         return (0);
 3234 }
 3235 
 3236 static int
 3237 bsd_to_linux_v4l2_buffer(struct v4l2_buffer *vb, struct l_v4l2_buffer *lvb)
 3238 {
 3239         lvb->index = vb->index;
 3240         lvb->type = vb->type;
 3241         lvb->bytesused = vb->bytesused;
 3242         lvb->flags = vb->flags;
 3243         lvb->field = vb->field;
 3244         lvb->timestamp.tv_sec = vb->timestamp.tv_sec;
 3245         lvb->timestamp.tv_usec = vb->timestamp.tv_usec;
 3246         memcpy(&lvb->timecode, &vb->timecode, sizeof (vb->timecode));
 3247         lvb->sequence = vb->sequence;
 3248         lvb->memory = vb->memory;
 3249         if (vb->memory == V4L2_MEMORY_USERPTR)
 3250                 /* possible pointer size conversion */
 3251                 lvb->m.userptr = PTROUT(vb->m.userptr);
 3252         else
 3253                 lvb->m.offset = vb->m.offset;
 3254         lvb->length = vb->length;
 3255         lvb->input = vb->input;
 3256         lvb->reserved = vb->reserved;
 3257         return (0);
 3258 }
 3259 
 3260 static int
 3261 linux_to_bsd_v4l2_format(struct l_v4l2_format *lvf, struct v4l2_format *vf)
 3262 {
 3263         vf->type = lvf->type;
 3264         if (lvf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
 3265 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3266             || lvf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3267 #endif
 3268             )
 3269                 /*
 3270                  * XXX TODO - needs 32 -> 64 bit conversion:
 3271                  * (unused by webcams?)
 3272                  */
 3273                 return (EINVAL);
 3274         memcpy(&vf->fmt, &lvf->fmt, sizeof(vf->fmt));
 3275         return (0);
 3276 }
 3277 
 3278 static int
 3279 bsd_to_linux_v4l2_format(struct v4l2_format *vf, struct l_v4l2_format *lvf)
 3280 {
 3281         lvf->type = vf->type;
 3282         if (vf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
 3283 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3284             || vf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3285 #endif
 3286             )
 3287                 /*
 3288                  * XXX TODO - needs 32 -> 64 bit conversion:
 3289                  * (unused by webcams?)
 3290                  */
 3291                 return (EINVAL);
 3292         memcpy(&lvf->fmt, &vf->fmt, sizeof(vf->fmt));
 3293         return (0);
 3294 }
 3295 static int
 3296 linux_ioctl_v4l2(struct thread *td, struct linux_ioctl_args *args)
 3297 {
 3298         struct file *fp;
 3299         int error;
 3300         struct v4l2_format vformat;
 3301         struct l_v4l2_format l_vformat;
 3302         struct v4l2_standard vstd;
 3303         struct l_v4l2_standard l_vstd;
 3304         struct l_v4l2_buffer l_vbuf;
 3305         struct v4l2_buffer vbuf;
 3306         struct v4l2_input vinp;
 3307 
 3308         switch (args->cmd & 0xffff) {
 3309         case LINUX_VIDIOC_RESERVED:
 3310         case LINUX_VIDIOC_LOG_STATUS:
 3311                 if ((args->cmd & IOC_DIRMASK) != LINUX_IOC_VOID)
 3312                         return (ENOIOCTL);
 3313                 args->cmd = (args->cmd & 0xffff) | IOC_VOID;
 3314                 break;
 3315 
 3316         case LINUX_VIDIOC_OVERLAY:
 3317         case LINUX_VIDIOC_STREAMON:
 3318         case LINUX_VIDIOC_STREAMOFF:
 3319         case LINUX_VIDIOC_S_STD:
 3320         case LINUX_VIDIOC_S_TUNER:
 3321         case LINUX_VIDIOC_S_AUDIO:
 3322         case LINUX_VIDIOC_S_AUDOUT:
 3323         case LINUX_VIDIOC_S_MODULATOR:
 3324         case LINUX_VIDIOC_S_FREQUENCY:
 3325         case LINUX_VIDIOC_S_CROP:
 3326         case LINUX_VIDIOC_S_JPEGCOMP:
 3327         case LINUX_VIDIOC_S_PRIORITY:
 3328         case LINUX_VIDIOC_DBG_S_REGISTER:
 3329         case LINUX_VIDIOC_S_HW_FREQ_SEEK:
 3330         case LINUX_VIDIOC_SUBSCRIBE_EVENT:
 3331         case LINUX_VIDIOC_UNSUBSCRIBE_EVENT:
 3332                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_IN;
 3333                 break;
 3334 
 3335         case LINUX_VIDIOC_QUERYCAP:
 3336         case LINUX_VIDIOC_G_STD:
 3337         case LINUX_VIDIOC_G_AUDIO:
 3338         case LINUX_VIDIOC_G_INPUT:
 3339         case LINUX_VIDIOC_G_OUTPUT:
 3340         case LINUX_VIDIOC_G_AUDOUT:
 3341         case LINUX_VIDIOC_G_JPEGCOMP:
 3342         case LINUX_VIDIOC_QUERYSTD:
 3343         case LINUX_VIDIOC_G_PRIORITY:
 3344         case LINUX_VIDIOC_QUERY_DV_PRESET:
 3345                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_OUT;
 3346                 break;
 3347 
 3348         case LINUX_VIDIOC_ENUM_FMT:
 3349         case LINUX_VIDIOC_REQBUFS:
 3350         case LINUX_VIDIOC_G_PARM:
 3351         case LINUX_VIDIOC_S_PARM:
 3352         case LINUX_VIDIOC_G_CTRL:
 3353         case LINUX_VIDIOC_S_CTRL:
 3354         case LINUX_VIDIOC_G_TUNER:
 3355         case LINUX_VIDIOC_QUERYCTRL:
 3356         case LINUX_VIDIOC_QUERYMENU:
 3357         case LINUX_VIDIOC_S_INPUT:
 3358         case LINUX_VIDIOC_S_OUTPUT:
 3359         case LINUX_VIDIOC_ENUMOUTPUT:
 3360         case LINUX_VIDIOC_G_MODULATOR:
 3361         case LINUX_VIDIOC_G_FREQUENCY:
 3362         case LINUX_VIDIOC_CROPCAP:
 3363         case LINUX_VIDIOC_G_CROP:
 3364         case LINUX_VIDIOC_ENUMAUDIO:
 3365         case LINUX_VIDIOC_ENUMAUDOUT:
 3366         case LINUX_VIDIOC_G_SLICED_VBI_CAP:
 3367 #ifdef VIDIOC_ENUM_FRAMESIZES
 3368         case LINUX_VIDIOC_ENUM_FRAMESIZES:
 3369         case LINUX_VIDIOC_ENUM_FRAMEINTERVALS:
 3370         case LINUX_VIDIOC_ENCODER_CMD:
 3371         case LINUX_VIDIOC_TRY_ENCODER_CMD:
 3372 #endif
 3373         case LINUX_VIDIOC_DBG_G_REGISTER:
 3374         case LINUX_VIDIOC_DBG_G_CHIP_IDENT:
 3375         case LINUX_VIDIOC_ENUM_DV_PRESETS:
 3376         case LINUX_VIDIOC_S_DV_PRESET:
 3377         case LINUX_VIDIOC_G_DV_PRESET:
 3378         case LINUX_VIDIOC_S_DV_TIMINGS:
 3379         case LINUX_VIDIOC_G_DV_TIMINGS:
 3380                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
 3381                 break;
 3382 
 3383         case LINUX_VIDIOC_G_FMT:
 3384         case LINUX_VIDIOC_S_FMT:
 3385         case LINUX_VIDIOC_TRY_FMT:
 3386                 error = copyin((void *)args->arg, &l_vformat, sizeof(l_vformat));
 3387                 if (error)
 3388                         return (error);
 3389                 error = fget(td, args->fd,
 3390                     &cap_ioctl_rights, &fp);
 3391                 if (error)
 3392                         return (error);
 3393                 if (linux_to_bsd_v4l2_format(&l_vformat, &vformat) != 0)
 3394                         error = EINVAL;
 3395                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_G_FMT)
 3396                         error = fo_ioctl(fp, VIDIOC_G_FMT, &vformat,
 3397                             td->td_ucred, td);
 3398                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_S_FMT)
 3399                         error = fo_ioctl(fp, VIDIOC_S_FMT, &vformat,
 3400                             td->td_ucred, td);
 3401                 else
 3402                         error = fo_ioctl(fp, VIDIOC_TRY_FMT, &vformat,
 3403                             td->td_ucred, td);
 3404                 bsd_to_linux_v4l2_format(&vformat, &l_vformat);
 3405                 copyout(&l_vformat, (void *)args->arg, sizeof(l_vformat));
 3406                 fdrop(fp, td);
 3407                 return (error);
 3408 
 3409         case LINUX_VIDIOC_ENUMSTD:
 3410                 error = copyin((void *)args->arg, &l_vstd, sizeof(l_vstd));
 3411                 if (error)
 3412                         return (error);
 3413                 linux_to_bsd_v4l2_standard(&l_vstd, &vstd);
 3414                 error = fget(td, args->fd,
 3415                     &cap_ioctl_rights, &fp);
 3416                 if (error)
 3417                         return (error);
 3418                 error = fo_ioctl(fp, VIDIOC_ENUMSTD, (caddr_t)&vstd,
 3419                     td->td_ucred, td);
 3420                 if (error) {
 3421                         fdrop(fp, td);
 3422                         return (error);
 3423                 }
 3424                 bsd_to_linux_v4l2_standard(&vstd, &l_vstd);
 3425                 error = copyout(&l_vstd, (void *)args->arg, sizeof(l_vstd));
 3426                 fdrop(fp, td);
 3427                 return (error);
 3428 
 3429         case LINUX_VIDIOC_ENUMINPUT:
 3430                 /*
 3431                  * The Linux struct l_v4l2_input differs only in size,
 3432                  * it has no padding at the end.
 3433                  */
 3434                 error = copyin((void *)args->arg, &vinp,
 3435                                 sizeof(struct l_v4l2_input));
 3436                 if (error != 0)
 3437                         return (error);
 3438                 error = fget(td, args->fd,
 3439                     &cap_ioctl_rights, &fp);
 3440                 if (error != 0)
 3441                         return (error);
 3442                 error = fo_ioctl(fp, VIDIOC_ENUMINPUT, (caddr_t)&vinp,
 3443                     td->td_ucred, td);
 3444                 if (error) {
 3445                         fdrop(fp, td);
 3446                         return (error);
 3447                 }
 3448                 error = copyout(&vinp, (void *)args->arg,
 3449                                 sizeof(struct l_v4l2_input));
 3450                 fdrop(fp, td);
 3451                 return (error);
 3452 
 3453         case LINUX_VIDIOC_QUERYBUF:
 3454         case LINUX_VIDIOC_QBUF:
 3455         case LINUX_VIDIOC_DQBUF:
 3456                 error = copyin((void *)args->arg, &l_vbuf, sizeof(l_vbuf));
 3457                 if (error)
 3458                         return (error);
 3459                 error = fget(td, args->fd,
 3460                     &cap_ioctl_rights, &fp);
 3461                 if (error)
 3462                         return (error);
 3463                 linux_to_bsd_v4l2_buffer(&l_vbuf, &vbuf);
 3464                 if ((args->cmd & 0xffff) == LINUX_VIDIOC_QUERYBUF)
 3465                         error = fo_ioctl(fp, VIDIOC_QUERYBUF, &vbuf,
 3466                             td->td_ucred, td);
 3467                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_QBUF)
 3468                         error = fo_ioctl(fp, VIDIOC_QBUF, &vbuf,
 3469                             td->td_ucred, td);
 3470                 else
 3471                         error = fo_ioctl(fp, VIDIOC_DQBUF, &vbuf,
 3472                             td->td_ucred, td);
 3473                 bsd_to_linux_v4l2_buffer(&vbuf, &l_vbuf);
 3474                 copyout(&l_vbuf, (void *)args->arg, sizeof(l_vbuf));
 3475                 fdrop(fp, td);
 3476                 return (error);
 3477 
 3478         /*
 3479          * XXX TODO - these need 32 -> 64 bit conversion:
 3480          * (are any of them needed for webcams?)
 3481          */
 3482         case LINUX_VIDIOC_G_FBUF:
 3483         case LINUX_VIDIOC_S_FBUF:
 3484 
 3485         case LINUX_VIDIOC_G_EXT_CTRLS:
 3486         case LINUX_VIDIOC_S_EXT_CTRLS:
 3487         case LINUX_VIDIOC_TRY_EXT_CTRLS:
 3488 
 3489         case LINUX_VIDIOC_DQEVENT:
 3490 
 3491         default:                        return (ENOIOCTL);
 3492         }
 3493 
 3494         error = sys_ioctl(td, (struct ioctl_args *)args);
 3495         return (error);
 3496 }
 3497 
 3498 /*
 3499  * Support for emulators/linux-libusb. This port uses FBSD_LUSB* macros
 3500  * instead of USB* ones. This lets us to provide correct values for cmd.
 3501  * 0xffffffe0 -- 0xffffffff range seemed to be the least collision-prone.
 3502  */
 3503 static int
 3504 linux_ioctl_fbsd_usb(struct thread *td, struct linux_ioctl_args *args)
 3505 {
 3506         int error;
 3507 
 3508         error = 0;
 3509         switch (args->cmd) {
 3510         case FBSD_LUSB_DEVICEENUMERATE:
 3511                 args->cmd = USB_DEVICEENUMERATE;
 3512                 break;
 3513         case FBSD_LUSB_DEV_QUIRK_ADD:
 3514                 args->cmd = USB_DEV_QUIRK_ADD;
 3515                 break;
 3516         case FBSD_LUSB_DEV_QUIRK_GET:
 3517                 args->cmd = USB_DEV_QUIRK_GET;
 3518                 break;
 3519         case FBSD_LUSB_DEV_QUIRK_REMOVE:
 3520                 args->cmd = USB_DEV_QUIRK_REMOVE;
 3521                 break;
 3522         case FBSD_LUSB_DO_REQUEST:
 3523                 args->cmd = USB_DO_REQUEST;
 3524                 break;
 3525         case FBSD_LUSB_FS_CLEAR_STALL_SYNC:
 3526                 args->cmd = USB_FS_CLEAR_STALL_SYNC;
 3527                 break;
 3528         case FBSD_LUSB_FS_CLOSE:
 3529                 args->cmd = USB_FS_CLOSE;
 3530                 break;
 3531         case FBSD_LUSB_FS_COMPLETE:
 3532                 args->cmd = USB_FS_COMPLETE;
 3533                 break;
 3534         case FBSD_LUSB_FS_INIT:
 3535                 args->cmd = USB_FS_INIT;
 3536                 break;
 3537         case FBSD_LUSB_FS_OPEN:
 3538                 args->cmd = USB_FS_OPEN;
 3539                 break;
 3540         case FBSD_LUSB_FS_START:
 3541                 args->cmd = USB_FS_START;
 3542                 break;
 3543         case FBSD_LUSB_FS_STOP:
 3544                 args->cmd = USB_FS_STOP;
 3545                 break;
 3546         case FBSD_LUSB_FS_UNINIT:
 3547                 args->cmd = USB_FS_UNINIT;
 3548                 break;
 3549         case FBSD_LUSB_GET_CONFIG:
 3550                 args->cmd = USB_GET_CONFIG;
 3551                 break;
 3552         case FBSD_LUSB_GET_DEVICEINFO:
 3553                 args->cmd = USB_GET_DEVICEINFO;
 3554                 break;
 3555         case FBSD_LUSB_GET_DEVICE_DESC:
 3556                 args->cmd = USB_GET_DEVICE_DESC;
 3557                 break;
 3558         case FBSD_LUSB_GET_FULL_DESC:
 3559                 args->cmd = USB_GET_FULL_DESC;
 3560                 break;
 3561         case FBSD_LUSB_GET_IFACE_DRIVER:
 3562                 args->cmd = USB_GET_IFACE_DRIVER;
 3563                 break;
 3564         case FBSD_LUSB_GET_PLUGTIME:
 3565                 args->cmd = USB_GET_PLUGTIME;
 3566                 break;
 3567         case FBSD_LUSB_GET_POWER_MODE:
 3568                 args->cmd = USB_GET_POWER_MODE;
 3569                 break;
 3570         case FBSD_LUSB_GET_REPORT_DESC:
 3571                 args->cmd = USB_GET_REPORT_DESC;
 3572                 break;
 3573         case FBSD_LUSB_GET_REPORT_ID:
 3574                 args->cmd = USB_GET_REPORT_ID;
 3575                 break;
 3576         case FBSD_LUSB_GET_TEMPLATE:
 3577                 args->cmd = USB_GET_TEMPLATE;
 3578                 break;
 3579         case FBSD_LUSB_IFACE_DRIVER_ACTIVE:
 3580                 args->cmd = USB_IFACE_DRIVER_ACTIVE;
 3581                 break;
 3582         case FBSD_LUSB_IFACE_DRIVER_DETACH:
 3583                 args->cmd = USB_IFACE_DRIVER_DETACH;
 3584                 break;
 3585         case FBSD_LUSB_QUIRK_NAME_GET:
 3586                 args->cmd = USB_QUIRK_NAME_GET;
 3587                 break;
 3588         case FBSD_LUSB_READ_DIR:
 3589                 args->cmd = USB_READ_DIR;
 3590                 break;
 3591         case FBSD_LUSB_SET_ALTINTERFACE:
 3592                 args->cmd = USB_SET_ALTINTERFACE;
 3593                 break;
 3594         case FBSD_LUSB_SET_CONFIG:
 3595                 args->cmd = USB_SET_CONFIG;
 3596                 break;
 3597         case FBSD_LUSB_SET_IMMED:
 3598                 args->cmd = USB_SET_IMMED;
 3599                 break;
 3600         case FBSD_LUSB_SET_POWER_MODE:
 3601                 args->cmd = USB_SET_POWER_MODE;
 3602                 break;
 3603         case FBSD_LUSB_SET_TEMPLATE:
 3604                 args->cmd = USB_SET_TEMPLATE;
 3605                 break;
 3606         case FBSD_LUSB_FS_OPEN_STREAM:
 3607                 args->cmd = USB_FS_OPEN_STREAM;
 3608                 break;
 3609         case FBSD_LUSB_GET_DEV_PORT_PATH:
 3610                 args->cmd = USB_GET_DEV_PORT_PATH;
 3611                 break;
 3612         case FBSD_LUSB_GET_POWER_USAGE:
 3613                 args->cmd = USB_GET_POWER_USAGE;
 3614                 break;
 3615         default:
 3616                 error = ENOIOCTL;
 3617         }
 3618         if (error != ENOIOCTL)
 3619                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3620         return (error);
 3621 }
 3622 
 3623 /*
 3624  * Some evdev ioctls must be translated.
 3625  *  - EVIOCGMTSLOTS is a IOC_READ ioctl on Linux although it has input data
 3626  *    (must be IOC_INOUT on FreeBSD).
 3627  *  - On Linux, EVIOCGRAB, EVIOCREVOKE and EVIOCRMFF are defined as _IOW with
 3628  *    an int argument. You don't pass an int pointer to the ioctl(), however,
 3629  *    but just the int directly. On FreeBSD, they are defined as _IOWINT for
 3630  *    this to work.
 3631  */
 3632 static int
 3633 linux_ioctl_evdev(struct thread *td, struct linux_ioctl_args *args)
 3634 {
 3635         struct file *fp;
 3636         clockid_t clock;
 3637         int error;
 3638 
 3639         args->cmd = SETDIR(args->cmd);
 3640 
 3641         switch (args->cmd) {
 3642         case (EVIOCGRAB & ~IOC_DIRMASK) | IOC_IN:
 3643                 args->cmd = EVIOCGRAB;
 3644                 break;
 3645         case (EVIOCREVOKE & ~IOC_DIRMASK) | IOC_IN:
 3646                 args->cmd = EVIOCREVOKE;
 3647                 break;
 3648         case (EVIOCRMFF & ~IOC_DIRMASK) | IOC_IN:
 3649                 args->cmd = EVIOCRMFF;
 3650                 break;
 3651         case EVIOCSCLOCKID: {
 3652                 error = copyin(PTRIN(args->arg), &clock, sizeof(clock));
 3653                 if (error != 0)
 3654                         return (error);
 3655                 if (clock & ~(LINUX_IOCTL_EVDEV_CLK))
 3656                         return (EINVAL);
 3657                 error = linux_to_native_clockid(&clock, clock);
 3658                 if (error != 0)
 3659                         return (error);
 3660 
 3661                 error = fget(td, args->fd,
 3662                     &cap_ioctl_rights, &fp);
 3663                 if (error != 0)
 3664                         return (error);
 3665 
 3666                 error = fo_ioctl(fp, EVIOCSCLOCKID, &clock, td->td_ucred, td);
 3667                 fdrop(fp, td);
 3668                 return (error);
 3669         }
 3670         default:
 3671                 break;
 3672         }
 3673 
 3674         if (IOCBASECMD(args->cmd) ==
 3675             ((EVIOCGMTSLOTS(0) & ~IOC_DIRMASK) | IOC_OUT))
 3676                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
 3677 
 3678         return (sys_ioctl(td, (struct ioctl_args *)args));
 3679 }
 3680 
 3681 /*
 3682  * main ioctl syscall function
 3683  */
 3684 
 3685 int
 3686 linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
 3687 {
 3688         struct file *fp;
 3689         struct linux_ioctl_handler_element *he;
 3690         int error, cmd;
 3691 
 3692 #ifdef DEBUG
 3693         if (ldebug(ioctl))
 3694                 printf(ARGS(ioctl, "%d, %04lx, *"), args->fd,
 3695                     (unsigned long)args->cmd);
 3696 #endif
 3697 
 3698         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 3699         if (error != 0)
 3700                 return (error);
 3701         if ((fp->f_flag & (FREAD|FWRITE)) == 0) {
 3702                 fdrop(fp, td);
 3703                 return (EBADF);
 3704         }
 3705 
 3706         /* Iterate over the ioctl handlers */
 3707         cmd = args->cmd & 0xffff;
 3708         sx_slock(&linux_ioctl_sx);
 3709         mtx_lock(&Giant);
 3710 #ifdef COMPAT_LINUX32
 3711         TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
 3712                 if (cmd >= he->low && cmd <= he->high) {
 3713                         error = (*he->func)(td, args);
 3714                         if (error != ENOIOCTL) {
 3715                                 mtx_unlock(&Giant);
 3716                                 sx_sunlock(&linux_ioctl_sx);
 3717                                 fdrop(fp, td);
 3718                                 return (error);
 3719                         }
 3720                 }
 3721         }
 3722 #endif
 3723         TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
 3724                 if (cmd >= he->low && cmd <= he->high) {
 3725                         error = (*he->func)(td, args);
 3726                         if (error != ENOIOCTL) {
 3727                                 mtx_unlock(&Giant);
 3728                                 sx_sunlock(&linux_ioctl_sx);
 3729                                 fdrop(fp, td);
 3730                                 return (error);
 3731                         }
 3732                 }
 3733         }
 3734         mtx_unlock(&Giant);
 3735         sx_sunlock(&linux_ioctl_sx);
 3736         fdrop(fp, td);
 3737 
 3738         switch (args->cmd & 0xffff) {
 3739         case LINUX_BTRFS_IOC_CLONE:
 3740                 return (ENOTSUP);
 3741 
 3742         default:
 3743                 linux_msg(td, "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
 3744                     args->fd, (int)(args->cmd & 0xffff),
 3745                     (int)(args->cmd & 0xff00) >> 8, (int)(args->cmd & 0xff));
 3746                 break;
 3747         }
 3748 
 3749         return (EINVAL);
 3750 }
 3751 
 3752 int
 3753 linux_ioctl_register_handler(struct linux_ioctl_handler *h)
 3754 {
 3755         struct linux_ioctl_handler_element *he, *cur;
 3756 
 3757         if (h == NULL || h->func == NULL)
 3758                 return (EINVAL);
 3759 
 3760         /*
 3761          * Reuse the element if the handler is already on the list, otherwise
 3762          * create a new element.
 3763          */
 3764         sx_xlock(&linux_ioctl_sx);
 3765         TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
 3766                 if (he->func == h->func)
 3767                         break;
 3768         }
 3769         if (he == NULL) {
 3770                 he = malloc(sizeof(*he),
 3771                     M_LINUX, M_WAITOK);
 3772                 he->func = h->func;
 3773         } else
 3774                 TAILQ_REMOVE(&linux_ioctl_handlers, he, list);
 3775 
 3776         /* Initialize range information. */
 3777         he->low = h->low;
 3778         he->high = h->high;
 3779         he->span = h->high - h->low + 1;
 3780 
 3781         /* Add the element to the list, sorted on span. */
 3782         TAILQ_FOREACH(cur, &linux_ioctl_handlers, list) {
 3783                 if (cur->span > he->span) {
 3784                         TAILQ_INSERT_BEFORE(cur, he, list);
 3785                         sx_xunlock(&linux_ioctl_sx);
 3786                         return (0);
 3787                 }
 3788         }
 3789         TAILQ_INSERT_TAIL(&linux_ioctl_handlers, he, list);
 3790         sx_xunlock(&linux_ioctl_sx);
 3791 
 3792         return (0);
 3793 }
 3794 
 3795 int
 3796 linux_ioctl_unregister_handler(struct linux_ioctl_handler *h)
 3797 {
 3798         struct linux_ioctl_handler_element *he;
 3799 
 3800         if (h == NULL || h->func == NULL)
 3801                 return (EINVAL);
 3802 
 3803         sx_xlock(&linux_ioctl_sx);
 3804         TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
 3805                 if (he->func == h->func) {
 3806                         TAILQ_REMOVE(&linux_ioctl_handlers, he, list);
 3807                         sx_xunlock(&linux_ioctl_sx);
 3808                         free(he, M_LINUX);
 3809                         return (0);
 3810                 }
 3811         }
 3812         sx_xunlock(&linux_ioctl_sx);
 3813 
 3814         return (EINVAL);
 3815 }
 3816 
 3817 #ifdef COMPAT_LINUX32
 3818 int
 3819 linux32_ioctl_register_handler(struct linux_ioctl_handler *h)
 3820 {
 3821         struct linux_ioctl_handler_element *he, *cur;
 3822 
 3823         if (h == NULL || h->func == NULL)
 3824                 return (EINVAL);
 3825 
 3826         /*
 3827          * Reuse the element if the handler is already on the list, otherwise
 3828          * create a new element.
 3829          */
 3830         sx_xlock(&linux_ioctl_sx);
 3831         TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
 3832                 if (he->func == h->func)
 3833                         break;
 3834         }
 3835         if (he == NULL) {
 3836                 he = malloc(sizeof(*he), M_LINUX, M_WAITOK);
 3837                 he->func = h->func;
 3838         } else
 3839                 TAILQ_REMOVE(&linux32_ioctl_handlers, he, list);
 3840 
 3841         /* Initialize range information. */
 3842         he->low = h->low;
 3843         he->high = h->high;
 3844         he->span = h->high - h->low + 1;
 3845 
 3846         /* Add the element to the list, sorted on span. */
 3847         TAILQ_FOREACH(cur, &linux32_ioctl_handlers, list) {
 3848                 if (cur->span > he->span) {
 3849                         TAILQ_INSERT_BEFORE(cur, he, list);
 3850                         sx_xunlock(&linux_ioctl_sx);
 3851                         return (0);
 3852                 }
 3853         }
 3854         TAILQ_INSERT_TAIL(&linux32_ioctl_handlers, he, list);
 3855         sx_xunlock(&linux_ioctl_sx);
 3856 
 3857         return (0);
 3858 }
 3859 
 3860 int
 3861 linux32_ioctl_unregister_handler(struct linux_ioctl_handler *h)
 3862 {
 3863         struct linux_ioctl_handler_element *he;
 3864 
 3865         if (h == NULL || h->func == NULL)
 3866                 return (EINVAL);
 3867 
 3868         sx_xlock(&linux_ioctl_sx);
 3869         TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
 3870                 if (he->func == h->func) {
 3871                         TAILQ_REMOVE(&linux32_ioctl_handlers, he, list);
 3872                         sx_xunlock(&linux_ioctl_sx);
 3873                         free(he, M_LINUX);
 3874                         return (0);
 3875                 }
 3876         }
 3877         sx_xunlock(&linux_ioctl_sx);
 3878 
 3879         return (EINVAL);
 3880 }
 3881 #endif

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