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


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

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 1994-1995 Søren Schmidt
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include "opt_compat.h"
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD: stable/11/sys/compat/linux/linux_ioctl.c 349629 2019-07-03 00:12:50Z markj $");
   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         cap_rights_t rights;
  200         struct file *fp;
  201         int error;
  202         u_int sectorsize, fwcylinders, fwheads, fwsectors;
  203         off_t mediasize, bytespercyl;
  204 
  205         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
  206         if (error != 0)
  207                 return (error);
  208         switch (args->cmd & 0xffff) {
  209         case LINUX_HDIO_GET_GEO:
  210         case LINUX_HDIO_GET_GEO_BIG:
  211                 error = fo_ioctl(fp, DIOCGMEDIASIZE,
  212                         (caddr_t)&mediasize, td->td_ucred, td);
  213                 if (!error)
  214                         error = fo_ioctl(fp, DIOCGSECTORSIZE,
  215                                 (caddr_t)&sectorsize, td->td_ucred, td);
  216                 if (!error)
  217                         error = fo_ioctl(fp, DIOCGFWHEADS,
  218                                 (caddr_t)&fwheads, td->td_ucred, td);
  219                 if (!error)
  220                         error = fo_ioctl(fp, DIOCGFWSECTORS,
  221                                 (caddr_t)&fwsectors, td->td_ucred, td);
  222                 /*
  223                  * XXX: DIOCGFIRSTOFFSET is not yet implemented, so
  224                  * so pretend that GEOM always says 0. This is NOT VALID
  225                  * for slices or partitions, only the per-disk raw devices.
  226                  */
  227 
  228                 fdrop(fp, td);
  229                 if (error)
  230                         return (error);
  231                 /*
  232                  * 1. Calculate the number of bytes in a cylinder,
  233                  *    given the firmware's notion of heads and sectors
  234                  *    per cylinder.
  235                  * 2. Calculate the number of cylinders, given the total
  236                  *    size of the media.
  237                  * All internal calculations should have 64-bit precision.
  238                  */
  239                 bytespercyl = (off_t) sectorsize * fwheads * fwsectors;
  240                 fwcylinders = mediasize / bytespercyl;
  241 #if defined(DEBUG)
  242                 linux_msg(td, "HDIO_GET_GEO: mediasize %jd, c/h/s %d/%d/%d, "
  243                           "bpc %jd",
  244                           (intmax_t)mediasize, fwcylinders, fwheads, fwsectors,
  245                           (intmax_t)bytespercyl);
  246 #endif
  247                 if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO) {
  248                         struct linux_hd_geometry hdg;
  249 
  250                         hdg.cylinders = fwcylinders;
  251                         hdg.heads = fwheads;
  252                         hdg.sectors = fwsectors;
  253                         hdg.start = 0;
  254                         error = copyout(&hdg, (void *)args->arg, sizeof(hdg));
  255                 } else if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO_BIG) {
  256                         struct linux_hd_big_geometry hdbg;
  257 
  258                         memset(&hdbg, 0, sizeof(hdbg));
  259                         hdbg.cylinders = fwcylinders;
  260                         hdbg.heads = fwheads;
  261                         hdbg.sectors = fwsectors;
  262                         hdbg.start = 0;
  263                         error = copyout(&hdbg, (void *)args->arg, sizeof(hdbg));
  264                 }
  265                 return (error);
  266                 break;
  267         default:
  268                 /* XXX */
  269                 linux_msg(td,
  270                         "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
  271                         args->fd, (int)(args->cmd & 0xffff),
  272                         (int)(args->cmd & 0xff00) >> 8,
  273                         (int)(args->cmd & 0xff));
  274                 break;
  275         }
  276         fdrop(fp, td);
  277         return (ENOIOCTL);
  278 }
  279 
  280 static int
  281 linux_ioctl_disk(struct thread *td, struct linux_ioctl_args *args)
  282 {
  283         cap_rights_t rights;
  284         struct file *fp;
  285         int error;
  286         u_int sectorsize;
  287         off_t mediasize;
  288 
  289         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
  290         if (error != 0)
  291                 return (error);
  292         switch (args->cmd & 0xffff) {
  293         case LINUX_BLKGETSIZE:
  294                 error = fo_ioctl(fp, DIOCGSECTORSIZE,
  295                     (caddr_t)&sectorsize, td->td_ucred, td);
  296                 if (!error)
  297                         error = fo_ioctl(fp, DIOCGMEDIASIZE,
  298                             (caddr_t)&mediasize, td->td_ucred, td);
  299                 fdrop(fp, td);
  300                 if (error)
  301                         return (error);
  302                 sectorsize = mediasize / sectorsize;
  303                 /*
  304                  * XXX: How do we know we return the right size of integer ?
  305                  */
  306                 return (copyout(&sectorsize, (void *)args->arg,
  307                     sizeof(sectorsize)));
  308                 break;
  309         case LINUX_BLKSSZGET:
  310                 error = fo_ioctl(fp, DIOCGSECTORSIZE,
  311                     (caddr_t)&sectorsize, td->td_ucred, td);
  312                 fdrop(fp, td);
  313                 if (error)
  314                         return (error);
  315                 return (copyout(&sectorsize, (void *)args->arg,
  316                     sizeof(sectorsize)));
  317                 break;
  318         }
  319         fdrop(fp, td);
  320         return (ENOIOCTL);
  321 }
  322 
  323 /*
  324  * termio related ioctls
  325  */
  326 
  327 struct linux_termio {
  328         unsigned short c_iflag;
  329         unsigned short c_oflag;
  330         unsigned short c_cflag;
  331         unsigned short c_lflag;
  332         unsigned char c_line;
  333         unsigned char c_cc[LINUX_NCC];
  334 };
  335 
  336 struct linux_termios {
  337         unsigned int c_iflag;
  338         unsigned int c_oflag;
  339         unsigned int c_cflag;
  340         unsigned int c_lflag;
  341         unsigned char c_line;
  342         unsigned char c_cc[LINUX_NCCS];
  343 };
  344 
  345 struct linux_winsize {
  346         unsigned short ws_row, ws_col;
  347         unsigned short ws_xpixel, ws_ypixel;
  348 };
  349 
  350 struct speedtab {
  351         int sp_speed;                   /* Speed. */
  352         int sp_code;                    /* Code. */
  353 };
  354 
  355 static struct speedtab sptab[] = {
  356         { B0, LINUX_B0 }, { B50, LINUX_B50 },
  357         { B75, LINUX_B75 }, { B110, LINUX_B110 },
  358         { B134, LINUX_B134 }, { B150, LINUX_B150 },
  359         { B200, LINUX_B200 }, { B300, LINUX_B300 },
  360         { B600, LINUX_B600 }, { B1200, LINUX_B1200 },
  361         { B1800, LINUX_B1800 }, { B2400, LINUX_B2400 },
  362         { B4800, LINUX_B4800 }, { B9600, LINUX_B9600 },
  363         { B19200, LINUX_B19200 }, { B38400, LINUX_B38400 },
  364         { B57600, LINUX_B57600 }, { B115200, LINUX_B115200 },
  365         {-1, -1 }
  366 };
  367 
  368 struct linux_serial_struct {
  369         int     type;
  370         int     line;
  371         int     port;
  372         int     irq;
  373         int     flags;
  374         int     xmit_fifo_size;
  375         int     custom_divisor;
  376         int     baud_base;
  377         unsigned short close_delay;
  378         char    reserved_char[2];
  379         int     hub6;
  380         unsigned short closing_wait;
  381         unsigned short closing_wait2;
  382         int     reserved[4];
  383 };
  384 
  385 static int
  386 linux_to_bsd_speed(int code, struct speedtab *table)
  387 {
  388         for ( ; table->sp_code != -1; table++)
  389                 if (table->sp_code == code)
  390                         return (table->sp_speed);
  391         return (-1);
  392 }
  393 
  394 static int
  395 bsd_to_linux_speed(int speed, struct speedtab *table)
  396 {
  397         for ( ; table->sp_speed != -1; table++)
  398                 if (table->sp_speed == speed)
  399                         return (table->sp_code);
  400         return (-1);
  401 }
  402 
  403 static void
  404 bsd_to_linux_termios(struct termios *bios, struct linux_termios *lios)
  405 {
  406         int i;
  407 
  408 #ifdef DEBUG
  409         if (ldebug(ioctl)) {
  410                 printf("LINUX: BSD termios structure (input):\n");
  411                 printf("i=%08x o=%08x c=%08x l=%08x ispeed=%d ospeed=%d\n",
  412                     bios->c_iflag, bios->c_oflag, bios->c_cflag, bios->c_lflag,
  413                     bios->c_ispeed, bios->c_ospeed);
  414                 printf("c_cc ");
  415                 for (i=0; i<NCCS; i++)
  416                         printf("%02x ", bios->c_cc[i]);
  417                 printf("\n");
  418         }
  419 #endif
  420 
  421         lios->c_iflag = 0;
  422         if (bios->c_iflag & IGNBRK)
  423                 lios->c_iflag |= LINUX_IGNBRK;
  424         if (bios->c_iflag & BRKINT)
  425                 lios->c_iflag |= LINUX_BRKINT;
  426         if (bios->c_iflag & IGNPAR)
  427                 lios->c_iflag |= LINUX_IGNPAR;
  428         if (bios->c_iflag & PARMRK)
  429                 lios->c_iflag |= LINUX_PARMRK;
  430         if (bios->c_iflag & INPCK)
  431                 lios->c_iflag |= LINUX_INPCK;
  432         if (bios->c_iflag & ISTRIP)
  433                 lios->c_iflag |= LINUX_ISTRIP;
  434         if (bios->c_iflag & INLCR)
  435                 lios->c_iflag |= LINUX_INLCR;
  436         if (bios->c_iflag & IGNCR)
  437                 lios->c_iflag |= LINUX_IGNCR;
  438         if (bios->c_iflag & ICRNL)
  439                 lios->c_iflag |= LINUX_ICRNL;
  440         if (bios->c_iflag & IXON)
  441                 lios->c_iflag |= LINUX_IXON;
  442         if (bios->c_iflag & IXANY)
  443                 lios->c_iflag |= LINUX_IXANY;
  444         if (bios->c_iflag & IXOFF)
  445                 lios->c_iflag |= LINUX_IXOFF;
  446         if (bios->c_iflag & IMAXBEL)
  447                 lios->c_iflag |= LINUX_IMAXBEL;
  448 
  449         lios->c_oflag = 0;
  450         if (bios->c_oflag & OPOST)
  451                 lios->c_oflag |= LINUX_OPOST;
  452         if (bios->c_oflag & ONLCR)
  453                 lios->c_oflag |= LINUX_ONLCR;
  454         if (bios->c_oflag & TAB3)
  455                 lios->c_oflag |= LINUX_XTABS;
  456 
  457         lios->c_cflag = bsd_to_linux_speed(bios->c_ispeed, sptab);
  458         lios->c_cflag |= (bios->c_cflag & CSIZE) >> 4;
  459         if (bios->c_cflag & CSTOPB)
  460                 lios->c_cflag |= LINUX_CSTOPB;
  461         if (bios->c_cflag & CREAD)
  462                 lios->c_cflag |= LINUX_CREAD;
  463         if (bios->c_cflag & PARENB)
  464                 lios->c_cflag |= LINUX_PARENB;
  465         if (bios->c_cflag & PARODD)
  466                 lios->c_cflag |= LINUX_PARODD;
  467         if (bios->c_cflag & HUPCL)
  468                 lios->c_cflag |= LINUX_HUPCL;
  469         if (bios->c_cflag & CLOCAL)
  470                 lios->c_cflag |= LINUX_CLOCAL;
  471         if (bios->c_cflag & CRTSCTS)
  472                 lios->c_cflag |= LINUX_CRTSCTS;
  473 
  474         lios->c_lflag = 0;
  475         if (bios->c_lflag & ISIG)
  476                 lios->c_lflag |= LINUX_ISIG;
  477         if (bios->c_lflag & ICANON)
  478                 lios->c_lflag |= LINUX_ICANON;
  479         if (bios->c_lflag & ECHO)
  480                 lios->c_lflag |= LINUX_ECHO;
  481         if (bios->c_lflag & ECHOE)
  482                 lios->c_lflag |= LINUX_ECHOE;
  483         if (bios->c_lflag & ECHOK)
  484                 lios->c_lflag |= LINUX_ECHOK;
  485         if (bios->c_lflag & ECHONL)
  486                 lios->c_lflag |= LINUX_ECHONL;
  487         if (bios->c_lflag & NOFLSH)
  488                 lios->c_lflag |= LINUX_NOFLSH;
  489         if (bios->c_lflag & TOSTOP)
  490                 lios->c_lflag |= LINUX_TOSTOP;
  491         if (bios->c_lflag & ECHOCTL)
  492                 lios->c_lflag |= LINUX_ECHOCTL;
  493         if (bios->c_lflag & ECHOPRT)
  494                 lios->c_lflag |= LINUX_ECHOPRT;
  495         if (bios->c_lflag & ECHOKE)
  496                 lios->c_lflag |= LINUX_ECHOKE;
  497         if (bios->c_lflag & FLUSHO)
  498                 lios->c_lflag |= LINUX_FLUSHO;
  499         if (bios->c_lflag & PENDIN)
  500                 lios->c_lflag |= LINUX_PENDIN;
  501         if (bios->c_lflag & IEXTEN)
  502                 lios->c_lflag |= LINUX_IEXTEN;
  503 
  504         for (i=0; i<LINUX_NCCS; i++)
  505                 lios->c_cc[i] = LINUX_POSIX_VDISABLE;
  506         lios->c_cc[LINUX_VINTR] = bios->c_cc[VINTR];
  507         lios->c_cc[LINUX_VQUIT] = bios->c_cc[VQUIT];
  508         lios->c_cc[LINUX_VERASE] = bios->c_cc[VERASE];
  509         lios->c_cc[LINUX_VKILL] = bios->c_cc[VKILL];
  510         lios->c_cc[LINUX_VEOF] = bios->c_cc[VEOF];
  511         lios->c_cc[LINUX_VEOL] = bios->c_cc[VEOL];
  512         lios->c_cc[LINUX_VMIN] = bios->c_cc[VMIN];
  513         lios->c_cc[LINUX_VTIME] = bios->c_cc[VTIME];
  514         lios->c_cc[LINUX_VEOL2] = bios->c_cc[VEOL2];
  515         lios->c_cc[LINUX_VSUSP] = bios->c_cc[VSUSP];
  516         lios->c_cc[LINUX_VSTART] = bios->c_cc[VSTART];
  517         lios->c_cc[LINUX_VSTOP] = bios->c_cc[VSTOP];
  518         lios->c_cc[LINUX_VREPRINT] = bios->c_cc[VREPRINT];
  519         lios->c_cc[LINUX_VDISCARD] = bios->c_cc[VDISCARD];
  520         lios->c_cc[LINUX_VWERASE] = bios->c_cc[VWERASE];
  521         lios->c_cc[LINUX_VLNEXT] = bios->c_cc[VLNEXT];
  522 
  523         for (i=0; i<LINUX_NCCS; i++) {
  524                 if (i != LINUX_VMIN && i != LINUX_VTIME &&
  525                     lios->c_cc[i] == _POSIX_VDISABLE)
  526                         lios->c_cc[i] = LINUX_POSIX_VDISABLE;
  527         }
  528         lios->c_line = 0;
  529 
  530 #ifdef DEBUG
  531         if (ldebug(ioctl)) {
  532                 printf("LINUX: LINUX termios structure (output):\n");
  533                 printf("i=%08x o=%08x c=%08x l=%08x line=%d\n",
  534                     lios->c_iflag, lios->c_oflag, lios->c_cflag,
  535                     lios->c_lflag, (int)lios->c_line);
  536                 printf("c_cc ");
  537                 for (i=0; i<LINUX_NCCS; i++)
  538                         printf("%02x ", lios->c_cc[i]);
  539                 printf("\n");
  540         }
  541 #endif
  542 }
  543 
  544 static void
  545 linux_to_bsd_termios(struct linux_termios *lios, struct termios *bios)
  546 {
  547         int i;
  548 
  549 #ifdef DEBUG
  550         if (ldebug(ioctl)) {
  551                 printf("LINUX: LINUX termios structure (input):\n");
  552                 printf("i=%08x o=%08x c=%08x l=%08x line=%d\n",
  553                     lios->c_iflag, lios->c_oflag, lios->c_cflag,
  554                     lios->c_lflag, (int)lios->c_line);
  555                 printf("c_cc ");
  556                 for (i=0; i<LINUX_NCCS; i++)
  557                         printf("%02x ", lios->c_cc[i]);
  558                 printf("\n");
  559         }
  560 #endif
  561 
  562         bios->c_iflag = 0;
  563         if (lios->c_iflag & LINUX_IGNBRK)
  564                 bios->c_iflag |= IGNBRK;
  565         if (lios->c_iflag & LINUX_BRKINT)
  566                 bios->c_iflag |= BRKINT;
  567         if (lios->c_iflag & LINUX_IGNPAR)
  568                 bios->c_iflag |= IGNPAR;
  569         if (lios->c_iflag & LINUX_PARMRK)
  570                 bios->c_iflag |= PARMRK;
  571         if (lios->c_iflag & LINUX_INPCK)
  572                 bios->c_iflag |= INPCK;
  573         if (lios->c_iflag & LINUX_ISTRIP)
  574                 bios->c_iflag |= ISTRIP;
  575         if (lios->c_iflag & LINUX_INLCR)
  576                 bios->c_iflag |= INLCR;
  577         if (lios->c_iflag & LINUX_IGNCR)
  578                 bios->c_iflag |= IGNCR;
  579         if (lios->c_iflag & LINUX_ICRNL)
  580                 bios->c_iflag |= ICRNL;
  581         if (lios->c_iflag & LINUX_IXON)
  582                 bios->c_iflag |= IXON;
  583         if (lios->c_iflag & LINUX_IXANY)
  584                 bios->c_iflag |= IXANY;
  585         if (lios->c_iflag & LINUX_IXOFF)
  586                 bios->c_iflag |= IXOFF;
  587         if (lios->c_iflag & LINUX_IMAXBEL)
  588                 bios->c_iflag |= IMAXBEL;
  589 
  590         bios->c_oflag = 0;
  591         if (lios->c_oflag & LINUX_OPOST)
  592                 bios->c_oflag |= OPOST;
  593         if (lios->c_oflag & LINUX_ONLCR)
  594                 bios->c_oflag |= ONLCR;
  595         if (lios->c_oflag & LINUX_XTABS)
  596                 bios->c_oflag |= TAB3;
  597 
  598         bios->c_cflag = (lios->c_cflag & LINUX_CSIZE) << 4;
  599         if (lios->c_cflag & LINUX_CSTOPB)
  600                 bios->c_cflag |= CSTOPB;
  601         if (lios->c_cflag & LINUX_CREAD)
  602                 bios->c_cflag |= CREAD;
  603         if (lios->c_cflag & LINUX_PARENB)
  604                 bios->c_cflag |= PARENB;
  605         if (lios->c_cflag & LINUX_PARODD)
  606                 bios->c_cflag |= PARODD;
  607         if (lios->c_cflag & LINUX_HUPCL)
  608                 bios->c_cflag |= HUPCL;
  609         if (lios->c_cflag & LINUX_CLOCAL)
  610                 bios->c_cflag |= CLOCAL;
  611         if (lios->c_cflag & LINUX_CRTSCTS)
  612                 bios->c_cflag |= CRTSCTS;
  613 
  614         bios->c_lflag = 0;
  615         if (lios->c_lflag & LINUX_ISIG)
  616                 bios->c_lflag |= ISIG;
  617         if (lios->c_lflag & LINUX_ICANON)
  618                 bios->c_lflag |= ICANON;
  619         if (lios->c_lflag & LINUX_ECHO)
  620                 bios->c_lflag |= ECHO;
  621         if (lios->c_lflag & LINUX_ECHOE)
  622                 bios->c_lflag |= ECHOE;
  623         if (lios->c_lflag & LINUX_ECHOK)
  624                 bios->c_lflag |= ECHOK;
  625         if (lios->c_lflag & LINUX_ECHONL)
  626                 bios->c_lflag |= ECHONL;
  627         if (lios->c_lflag & LINUX_NOFLSH)
  628                 bios->c_lflag |= NOFLSH;
  629         if (lios->c_lflag & LINUX_TOSTOP)
  630                 bios->c_lflag |= TOSTOP;
  631         if (lios->c_lflag & LINUX_ECHOCTL)
  632                 bios->c_lflag |= ECHOCTL;
  633         if (lios->c_lflag & LINUX_ECHOPRT)
  634                 bios->c_lflag |= ECHOPRT;
  635         if (lios->c_lflag & LINUX_ECHOKE)
  636                 bios->c_lflag |= ECHOKE;
  637         if (lios->c_lflag & LINUX_FLUSHO)
  638                 bios->c_lflag |= FLUSHO;
  639         if (lios->c_lflag & LINUX_PENDIN)
  640                 bios->c_lflag |= PENDIN;
  641         if (lios->c_lflag & LINUX_IEXTEN)
  642                 bios->c_lflag |= IEXTEN;
  643 
  644         for (i=0; i<NCCS; i++)
  645                 bios->c_cc[i] = _POSIX_VDISABLE;
  646         bios->c_cc[VINTR] = lios->c_cc[LINUX_VINTR];
  647         bios->c_cc[VQUIT] = lios->c_cc[LINUX_VQUIT];
  648         bios->c_cc[VERASE] = lios->c_cc[LINUX_VERASE];
  649         bios->c_cc[VKILL] = lios->c_cc[LINUX_VKILL];
  650         bios->c_cc[VEOF] = lios->c_cc[LINUX_VEOF];
  651         bios->c_cc[VEOL] = lios->c_cc[LINUX_VEOL];
  652         bios->c_cc[VMIN] = lios->c_cc[LINUX_VMIN];
  653         bios->c_cc[VTIME] = lios->c_cc[LINUX_VTIME];
  654         bios->c_cc[VEOL2] = lios->c_cc[LINUX_VEOL2];
  655         bios->c_cc[VSUSP] = lios->c_cc[LINUX_VSUSP];
  656         bios->c_cc[VSTART] = lios->c_cc[LINUX_VSTART];
  657         bios->c_cc[VSTOP] = lios->c_cc[LINUX_VSTOP];
  658         bios->c_cc[VREPRINT] = lios->c_cc[LINUX_VREPRINT];
  659         bios->c_cc[VDISCARD] = lios->c_cc[LINUX_VDISCARD];
  660         bios->c_cc[VWERASE] = lios->c_cc[LINUX_VWERASE];
  661         bios->c_cc[VLNEXT] = lios->c_cc[LINUX_VLNEXT];
  662 
  663         for (i=0; i<NCCS; i++) {
  664                 if (i != VMIN && i != VTIME &&
  665                     bios->c_cc[i] == LINUX_POSIX_VDISABLE)
  666                         bios->c_cc[i] = _POSIX_VDISABLE;
  667         }
  668 
  669         bios->c_ispeed = bios->c_ospeed =
  670             linux_to_bsd_speed(lios->c_cflag & LINUX_CBAUD, sptab);
  671 
  672 #ifdef DEBUG
  673         if (ldebug(ioctl)) {
  674                 printf("LINUX: BSD termios structure (output):\n");
  675                 printf("i=%08x o=%08x c=%08x l=%08x ispeed=%d ospeed=%d\n",
  676                     bios->c_iflag, bios->c_oflag, bios->c_cflag, bios->c_lflag,
  677                     bios->c_ispeed, bios->c_ospeed);
  678                 printf("c_cc ");
  679                 for (i=0; i<NCCS; i++)
  680                         printf("%02x ", bios->c_cc[i]);
  681                 printf("\n");
  682         }
  683 #endif
  684 }
  685 
  686 static void
  687 bsd_to_linux_termio(struct termios *bios, struct linux_termio *lio)
  688 {
  689         struct linux_termios lios;
  690 
  691         memset(lio, 0, sizeof(*lio));
  692         bsd_to_linux_termios(bios, &lios);
  693         lio->c_iflag = lios.c_iflag;
  694         lio->c_oflag = lios.c_oflag;
  695         lio->c_cflag = lios.c_cflag;
  696         lio->c_lflag = lios.c_lflag;
  697         lio->c_line  = lios.c_line;
  698         memcpy(lio->c_cc, lios.c_cc, LINUX_NCC);
  699 }
  700 
  701 static void
  702 linux_to_bsd_termio(struct linux_termio *lio, struct termios *bios)
  703 {
  704         struct linux_termios lios;
  705         int i;
  706 
  707         lios.c_iflag = lio->c_iflag;
  708         lios.c_oflag = lio->c_oflag;
  709         lios.c_cflag = lio->c_cflag;
  710         lios.c_lflag = lio->c_lflag;
  711         for (i=LINUX_NCC; i<LINUX_NCCS; i++)
  712                 lios.c_cc[i] = LINUX_POSIX_VDISABLE;
  713         memcpy(lios.c_cc, lio->c_cc, LINUX_NCC);
  714         linux_to_bsd_termios(&lios, bios);
  715 }
  716 
  717 static int
  718 linux_ioctl_termio(struct thread *td, struct linux_ioctl_args *args)
  719 {
  720         struct termios bios;
  721         struct linux_termios lios;
  722         struct linux_termio lio;
  723         cap_rights_t rights;
  724         struct file *fp;
  725         int error;
  726 
  727         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
  728         if (error != 0)
  729                 return (error);
  730 
  731         switch (args->cmd & 0xffff) {
  732 
  733         case LINUX_TCGETS:
  734                 error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
  735                     td);
  736                 if (error)
  737                         break;
  738                 bsd_to_linux_termios(&bios, &lios);
  739                 error = copyout(&lios, (void *)args->arg, sizeof(lios));
  740                 break;
  741 
  742         case LINUX_TCSETS:
  743                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  744                 if (error)
  745                         break;
  746                 linux_to_bsd_termios(&lios, &bios);
  747                 error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
  748                     td));
  749                 break;
  750 
  751         case LINUX_TCSETSW:
  752                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  753                 if (error)
  754                         break;
  755                 linux_to_bsd_termios(&lios, &bios);
  756                 error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
  757                     td));
  758                 break;
  759 
  760         case LINUX_TCSETSF:
  761                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  762                 if (error)
  763                         break;
  764                 linux_to_bsd_termios(&lios, &bios);
  765                 error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
  766                     td));
  767                 break;
  768 
  769         case LINUX_TCGETA:
  770                 error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
  771                     td);
  772                 if (error)
  773                         break;
  774                 bsd_to_linux_termio(&bios, &lio);
  775                 error = (copyout(&lio, (void *)args->arg, sizeof(lio)));
  776                 break;
  777 
  778         case LINUX_TCSETA:
  779                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  780                 if (error)
  781                         break;
  782                 linux_to_bsd_termio(&lio, &bios);
  783                 error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
  784                     td));
  785                 break;
  786 
  787         case LINUX_TCSETAW:
  788                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  789                 if (error)
  790                         break;
  791                 linux_to_bsd_termio(&lio, &bios);
  792                 error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
  793                     td));
  794                 break;
  795 
  796         case LINUX_TCSETAF:
  797                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  798                 if (error)
  799                         break;
  800                 linux_to_bsd_termio(&lio, &bios);
  801                 error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
  802                     td));
  803                 break;
  804 
  805         /* LINUX_TCSBRK */
  806 
  807         case LINUX_TCXONC: {
  808                 switch (args->arg) {
  809                 case LINUX_TCOOFF:
  810                         args->cmd = TIOCSTOP;
  811                         break;
  812                 case LINUX_TCOON:
  813                         args->cmd = TIOCSTART;
  814                         break;
  815                 case LINUX_TCIOFF:
  816                 case LINUX_TCION: {
  817                         int c;
  818                         struct write_args wr;
  819                         error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios,
  820                             td->td_ucred, td);
  821                         if (error)
  822                                 break;
  823                         fdrop(fp, td);
  824                         c = (args->arg == LINUX_TCIOFF) ? VSTOP : VSTART;
  825                         c = bios.c_cc[c];
  826                         if (c != _POSIX_VDISABLE) {
  827                                 wr.fd = args->fd;
  828                                 wr.buf = &c;
  829                                 wr.nbyte = sizeof(c);
  830                                 return (sys_write(td, &wr));
  831                         } else
  832                                 return (0);
  833                 }
  834                 default:
  835                         fdrop(fp, td);
  836                         return (EINVAL);
  837                 }
  838                 args->arg = 0;
  839                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  840                 break;
  841         }
  842 
  843         case LINUX_TCFLSH: {
  844                 int val;
  845                 switch (args->arg) {
  846                 case LINUX_TCIFLUSH:
  847                         val = FREAD;
  848                         break;
  849                 case LINUX_TCOFLUSH:
  850                         val = FWRITE;
  851                         break;
  852                 case LINUX_TCIOFLUSH:
  853                         val = FREAD | FWRITE;
  854                         break;
  855                 default:
  856                         fdrop(fp, td);
  857                         return (EINVAL);
  858                 }
  859                 error = (fo_ioctl(fp,TIOCFLUSH,(caddr_t)&val,td->td_ucred,td));
  860                 break;
  861         }
  862 
  863         case LINUX_TIOCEXCL:
  864                 args->cmd = TIOCEXCL;
  865                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  866                 break;
  867 
  868         case LINUX_TIOCNXCL:
  869                 args->cmd = TIOCNXCL;
  870                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  871                 break;
  872 
  873         case LINUX_TIOCSCTTY:
  874                 args->cmd = TIOCSCTTY;
  875                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  876                 break;
  877 
  878         case LINUX_TIOCGPGRP:
  879                 args->cmd = TIOCGPGRP;
  880                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  881                 break;
  882 
  883         case LINUX_TIOCSPGRP:
  884                 args->cmd = TIOCSPGRP;
  885                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  886                 break;
  887 
  888         /* LINUX_TIOCOUTQ */
  889         /* LINUX_TIOCSTI */
  890 
  891         case LINUX_TIOCGWINSZ:
  892                 args->cmd = TIOCGWINSZ;
  893                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  894                 break;
  895 
  896         case LINUX_TIOCSWINSZ:
  897                 args->cmd = TIOCSWINSZ;
  898                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  899                 break;
  900 
  901         case LINUX_TIOCMGET:
  902                 args->cmd = TIOCMGET;
  903                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  904                 break;
  905 
  906         case LINUX_TIOCMBIS:
  907                 args->cmd = TIOCMBIS;
  908                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  909                 break;
  910 
  911         case LINUX_TIOCMBIC:
  912                 args->cmd = TIOCMBIC;
  913                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  914                 break;
  915 
  916         case LINUX_TIOCMSET:
  917                 args->cmd = TIOCMSET;
  918                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  919                 break;
  920 
  921         /* TIOCGSOFTCAR */
  922         /* TIOCSSOFTCAR */
  923 
  924         case LINUX_FIONREAD: /* LINUX_TIOCINQ */
  925                 args->cmd = FIONREAD;
  926                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  927                 break;
  928 
  929         /* LINUX_TIOCLINUX */
  930 
  931         case LINUX_TIOCCONS:
  932                 args->cmd = TIOCCONS;
  933                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  934                 break;
  935 
  936         case LINUX_TIOCGSERIAL: {
  937                 struct linux_serial_struct lss;
  938 
  939                 bzero(&lss, sizeof(lss));
  940                 lss.type = LINUX_PORT_16550A;
  941                 lss.flags = 0;
  942                 lss.close_delay = 0;
  943                 error = copyout(&lss, (void *)args->arg, sizeof(lss));
  944                 break;
  945         }
  946 
  947         case LINUX_TIOCSSERIAL: {
  948                 struct linux_serial_struct lss;
  949                 error = copyin((void *)args->arg, &lss, sizeof(lss));
  950                 if (error)
  951                         break;
  952                 /* XXX - It really helps to have an implementation that
  953                  * does nothing. NOT!
  954                  */
  955                 error = 0;
  956                 break;
  957         }
  958 
  959         case LINUX_TIOCPKT:
  960                 args->cmd = TIOCPKT;
  961                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  962                 break;
  963 
  964         case LINUX_FIONBIO:
  965                 args->cmd = FIONBIO;
  966                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  967                 break;
  968 
  969         case LINUX_TIOCNOTTY:
  970                 args->cmd = TIOCNOTTY;
  971                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  972                 break;
  973 
  974         case LINUX_TIOCSETD: {
  975                 int line;
  976                 switch (args->arg) {
  977                 case LINUX_N_TTY:
  978                         line = TTYDISC;
  979                         break;
  980                 case LINUX_N_SLIP:
  981                         line = SLIPDISC;
  982                         break;
  983                 case LINUX_N_PPP:
  984                         line = PPPDISC;
  985                         break;
  986                 default:
  987                         fdrop(fp, td);
  988                         return (EINVAL);
  989                 }
  990                 error = (fo_ioctl(fp, TIOCSETD, (caddr_t)&line, td->td_ucred,
  991                     td));
  992                 break;
  993         }
  994 
  995         case LINUX_TIOCGETD: {
  996                 int linux_line;
  997                 int bsd_line = TTYDISC;
  998                 error = fo_ioctl(fp, TIOCGETD, (caddr_t)&bsd_line,
  999                     td->td_ucred, td);
 1000                 if (error)
 1001                         break;
 1002                 switch (bsd_line) {
 1003                 case TTYDISC:
 1004                         linux_line = LINUX_N_TTY;
 1005                         break;
 1006                 case SLIPDISC:
 1007                         linux_line = LINUX_N_SLIP;
 1008                         break;
 1009                 case PPPDISC:
 1010                         linux_line = LINUX_N_PPP;
 1011                         break;
 1012                 default:
 1013                         fdrop(fp, td);
 1014                         return (EINVAL);
 1015                 }
 1016                 error = (copyout(&linux_line, (void *)args->arg, sizeof(int)));
 1017                 break;
 1018         }
 1019 
 1020         /* LINUX_TCSBRKP */
 1021         /* LINUX_TIOCTTYGSTRUCT */
 1022 
 1023         case LINUX_FIONCLEX:
 1024                 args->cmd = FIONCLEX;
 1025                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1026                 break;
 1027 
 1028         case LINUX_FIOCLEX:
 1029                 args->cmd = FIOCLEX;
 1030                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1031                 break;
 1032 
 1033         case LINUX_FIOASYNC:
 1034                 args->cmd = FIOASYNC;
 1035                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1036                 break;
 1037 
 1038         /* LINUX_TIOCSERCONFIG */
 1039         /* LINUX_TIOCSERGWILD */
 1040         /* LINUX_TIOCSERSWILD */
 1041         /* LINUX_TIOCGLCKTRMIOS */
 1042         /* LINUX_TIOCSLCKTRMIOS */
 1043 
 1044         case LINUX_TIOCSBRK:
 1045                 args->cmd = TIOCSBRK;
 1046                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1047                 break;
 1048 
 1049         case LINUX_TIOCCBRK:
 1050                 args->cmd = TIOCCBRK;
 1051                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1052                 break;
 1053         case LINUX_TIOCGPTN: {
 1054                 int nb;
 1055 
 1056                 error = fo_ioctl(fp, TIOCGPTN, (caddr_t)&nb, td->td_ucred, td);
 1057                 if (!error)
 1058                         error = copyout(&nb, (void *)args->arg,
 1059                             sizeof(int));
 1060                 break;
 1061         }
 1062         case LINUX_TIOCSPTLCK:
 1063                 /* Our unlockpt() does nothing. */
 1064                 error = 0;
 1065                 break;
 1066         default:
 1067                 error = ENOIOCTL;
 1068                 break;
 1069         }
 1070 
 1071         fdrop(fp, td);
 1072         return (error);
 1073 }
 1074 
 1075 /*
 1076  * CDROM related ioctls
 1077  */
 1078 
 1079 struct linux_cdrom_msf
 1080 {
 1081         u_char  cdmsf_min0;
 1082         u_char  cdmsf_sec0;
 1083         u_char  cdmsf_frame0;
 1084         u_char  cdmsf_min1;
 1085         u_char  cdmsf_sec1;
 1086         u_char  cdmsf_frame1;
 1087 };
 1088 
 1089 struct linux_cdrom_tochdr
 1090 {
 1091         u_char  cdth_trk0;
 1092         u_char  cdth_trk1;
 1093 };
 1094 
 1095 union linux_cdrom_addr
 1096 {
 1097         struct {
 1098                 u_char  minute;
 1099                 u_char  second;
 1100                 u_char  frame;
 1101         } msf;
 1102         int     lba;
 1103 };
 1104 
 1105 struct linux_cdrom_tocentry
 1106 {
 1107         u_char  cdte_track;
 1108         u_char  cdte_adr:4;
 1109         u_char  cdte_ctrl:4;
 1110         u_char  cdte_format;
 1111         union linux_cdrom_addr cdte_addr;
 1112         u_char  cdte_datamode;
 1113 };
 1114 
 1115 struct linux_cdrom_subchnl
 1116 {
 1117         u_char  cdsc_format;
 1118         u_char  cdsc_audiostatus;
 1119         u_char  cdsc_adr:4;
 1120         u_char  cdsc_ctrl:4;
 1121         u_char  cdsc_trk;
 1122         u_char  cdsc_ind;
 1123         union linux_cdrom_addr cdsc_absaddr;
 1124         union linux_cdrom_addr cdsc_reladdr;
 1125 };
 1126 
 1127 struct l_cdrom_read_audio {
 1128         union linux_cdrom_addr addr;
 1129         u_char          addr_format;
 1130         l_int           nframes;
 1131         u_char          *buf;
 1132 };
 1133 
 1134 struct l_dvd_layer {
 1135         u_char          book_version:4;
 1136         u_char          book_type:4;
 1137         u_char          min_rate:4;
 1138         u_char          disc_size:4;
 1139         u_char          layer_type:4;
 1140         u_char          track_path:1;
 1141         u_char          nlayers:2;
 1142         u_char          track_density:4;
 1143         u_char          linear_density:4;
 1144         u_char          bca:1;
 1145         u_int32_t       start_sector;
 1146         u_int32_t       end_sector;
 1147         u_int32_t       end_sector_l0;
 1148 };
 1149 
 1150 struct l_dvd_physical {
 1151         u_char          type;
 1152         u_char          layer_num;
 1153         struct l_dvd_layer layer[4];
 1154 };
 1155 
 1156 struct l_dvd_copyright {
 1157         u_char          type;
 1158         u_char          layer_num;
 1159         u_char          cpst;
 1160         u_char          rmi;
 1161 };
 1162 
 1163 struct l_dvd_disckey {
 1164         u_char          type;
 1165         l_uint          agid:2;
 1166         u_char          value[2048];
 1167 };
 1168 
 1169 struct l_dvd_bca {
 1170         u_char          type;
 1171         l_int           len;
 1172         u_char          value[188];
 1173 };
 1174 
 1175 struct l_dvd_manufact {
 1176         u_char          type;
 1177         u_char          layer_num;
 1178         l_int           len;
 1179         u_char          value[2048];
 1180 };
 1181 
 1182 typedef union {
 1183         u_char                  type;
 1184         struct l_dvd_physical   physical;
 1185         struct l_dvd_copyright  copyright;
 1186         struct l_dvd_disckey    disckey;
 1187         struct l_dvd_bca        bca;
 1188         struct l_dvd_manufact   manufact;
 1189 } l_dvd_struct;
 1190 
 1191 typedef u_char l_dvd_key[5];
 1192 typedef u_char l_dvd_challenge[10];
 1193 
 1194 struct l_dvd_lu_send_agid {
 1195         u_char          type;
 1196         l_uint          agid:2;
 1197 };
 1198 
 1199 struct l_dvd_host_send_challenge {
 1200         u_char          type;
 1201         l_uint          agid:2;
 1202         l_dvd_challenge chal;
 1203 };
 1204 
 1205 struct l_dvd_send_key {
 1206         u_char          type;
 1207         l_uint          agid:2;
 1208         l_dvd_key       key;
 1209 };
 1210 
 1211 struct l_dvd_lu_send_challenge {
 1212         u_char          type;
 1213         l_uint          agid:2;
 1214         l_dvd_challenge chal;
 1215 };
 1216 
 1217 struct l_dvd_lu_send_title_key {
 1218         u_char          type;
 1219         l_uint          agid:2;
 1220         l_dvd_key       title_key;
 1221         l_int           lba;
 1222         l_uint          cpm:1;
 1223         l_uint          cp_sec:1;
 1224         l_uint          cgms:2;
 1225 };
 1226 
 1227 struct l_dvd_lu_send_asf {
 1228         u_char          type;
 1229         l_uint          agid:2;
 1230         l_uint          asf:1;
 1231 };
 1232 
 1233 struct l_dvd_host_send_rpcstate {
 1234         u_char          type;
 1235         u_char          pdrc;
 1236 };
 1237 
 1238 struct l_dvd_lu_send_rpcstate {
 1239         u_char          type:2;
 1240         u_char          vra:3;
 1241         u_char          ucca:3;
 1242         u_char          region_mask;
 1243         u_char          rpc_scheme;
 1244 };
 1245 
 1246 typedef union {
 1247         u_char                          type;
 1248         struct l_dvd_lu_send_agid       lsa;
 1249         struct l_dvd_host_send_challenge hsc;
 1250         struct l_dvd_send_key           lsk;
 1251         struct l_dvd_lu_send_challenge  lsc;
 1252         struct l_dvd_send_key           hsk;
 1253         struct l_dvd_lu_send_title_key  lstk;
 1254         struct l_dvd_lu_send_asf        lsasf;
 1255         struct l_dvd_host_send_rpcstate hrpcs;
 1256         struct l_dvd_lu_send_rpcstate   lrpcs;
 1257 } l_dvd_authinfo;
 1258 
 1259 static void
 1260 bsd_to_linux_msf_lba(u_char af, union msf_lba *bp, union linux_cdrom_addr *lp)
 1261 {
 1262         if (af == CD_LBA_FORMAT)
 1263                 lp->lba = bp->lba;
 1264         else {
 1265                 lp->msf.minute = bp->msf.minute;
 1266                 lp->msf.second = bp->msf.second;
 1267                 lp->msf.frame = bp->msf.frame;
 1268         }
 1269 }
 1270 
 1271 static void
 1272 set_linux_cdrom_addr(union linux_cdrom_addr *addr, int format, int lba)
 1273 {
 1274         if (format == LINUX_CDROM_MSF) {
 1275                 addr->msf.frame = lba % 75;
 1276                 lba /= 75;
 1277                 lba += 2;
 1278                 addr->msf.second = lba % 60;
 1279                 addr->msf.minute = lba / 60;
 1280         } else
 1281                 addr->lba = lba;
 1282 }
 1283 
 1284 static int
 1285 linux_to_bsd_dvd_struct(l_dvd_struct *lp, struct dvd_struct *bp)
 1286 {
 1287         bp->format = lp->type;
 1288         switch (bp->format) {
 1289         case DVD_STRUCT_PHYSICAL:
 1290                 if (bp->layer_num >= 4)
 1291                         return (EINVAL);
 1292                 bp->layer_num = lp->physical.layer_num;
 1293                 break;
 1294         case DVD_STRUCT_COPYRIGHT:
 1295                 bp->layer_num = lp->copyright.layer_num;
 1296                 break;
 1297         case DVD_STRUCT_DISCKEY:
 1298                 bp->agid = lp->disckey.agid;
 1299                 break;
 1300         case DVD_STRUCT_BCA:
 1301         case DVD_STRUCT_MANUFACT:
 1302                 break;
 1303         default:
 1304                 return (EINVAL);
 1305         }
 1306         return (0);
 1307 }
 1308 
 1309 static int
 1310 bsd_to_linux_dvd_struct(struct dvd_struct *bp, l_dvd_struct *lp)
 1311 {
 1312         switch (bp->format) {
 1313         case DVD_STRUCT_PHYSICAL: {
 1314                 struct dvd_layer *blp = (struct dvd_layer *)bp->data;
 1315                 struct l_dvd_layer *llp = &lp->physical.layer[bp->layer_num];
 1316                 memset(llp, 0, sizeof(*llp));
 1317                 llp->book_version = blp->book_version;
 1318                 llp->book_type = blp->book_type;
 1319                 llp->min_rate = blp->max_rate;
 1320                 llp->disc_size = blp->disc_size;
 1321                 llp->layer_type = blp->layer_type;
 1322                 llp->track_path = blp->track_path;
 1323                 llp->nlayers = blp->nlayers;
 1324                 llp->track_density = blp->track_density;
 1325                 llp->linear_density = blp->linear_density;
 1326                 llp->bca = blp->bca;
 1327                 llp->start_sector = blp->start_sector;
 1328                 llp->end_sector = blp->end_sector;
 1329                 llp->end_sector_l0 = blp->end_sector_l0;
 1330                 break;
 1331         }
 1332         case DVD_STRUCT_COPYRIGHT:
 1333                 lp->copyright.cpst = bp->cpst;
 1334                 lp->copyright.rmi = bp->rmi;
 1335                 break;
 1336         case DVD_STRUCT_DISCKEY:
 1337                 memcpy(lp->disckey.value, bp->data, sizeof(lp->disckey.value));
 1338                 break;
 1339         case DVD_STRUCT_BCA:
 1340                 lp->bca.len = bp->length;
 1341                 memcpy(lp->bca.value, bp->data, sizeof(lp->bca.value));
 1342                 break;
 1343         case DVD_STRUCT_MANUFACT:
 1344                 lp->manufact.len = bp->length;
 1345                 memcpy(lp->manufact.value, bp->data,
 1346                     sizeof(lp->manufact.value));
 1347                 /* lp->manufact.layer_num is unused in Linux (redhat 7.0). */
 1348                 break;
 1349         default:
 1350                 return (EINVAL);
 1351         }
 1352         return (0);
 1353 }
 1354 
 1355 static int
 1356 linux_to_bsd_dvd_authinfo(l_dvd_authinfo *lp, int *bcode,
 1357     struct dvd_authinfo *bp)
 1358 {
 1359         switch (lp->type) {
 1360         case LINUX_DVD_LU_SEND_AGID:
 1361                 *bcode = DVDIOCREPORTKEY;
 1362                 bp->format = DVD_REPORT_AGID;
 1363                 bp->agid = lp->lsa.agid;
 1364                 break;
 1365         case LINUX_DVD_HOST_SEND_CHALLENGE:
 1366                 *bcode = DVDIOCSENDKEY;
 1367                 bp->format = DVD_SEND_CHALLENGE;
 1368                 bp->agid = lp->hsc.agid;
 1369                 memcpy(bp->keychal, lp->hsc.chal, 10);
 1370                 break;
 1371         case LINUX_DVD_LU_SEND_KEY1:
 1372                 *bcode = DVDIOCREPORTKEY;
 1373                 bp->format = DVD_REPORT_KEY1;
 1374                 bp->agid = lp->lsk.agid;
 1375                 break;
 1376         case LINUX_DVD_LU_SEND_CHALLENGE:
 1377                 *bcode = DVDIOCREPORTKEY;
 1378                 bp->format = DVD_REPORT_CHALLENGE;
 1379                 bp->agid = lp->lsc.agid;
 1380                 break;
 1381         case LINUX_DVD_HOST_SEND_KEY2:
 1382                 *bcode = DVDIOCSENDKEY;
 1383                 bp->format = DVD_SEND_KEY2;
 1384                 bp->agid = lp->hsk.agid;
 1385                 memcpy(bp->keychal, lp->hsk.key, 5);
 1386                 break;
 1387         case LINUX_DVD_LU_SEND_TITLE_KEY:
 1388                 *bcode = DVDIOCREPORTKEY;
 1389                 bp->format = DVD_REPORT_TITLE_KEY;
 1390                 bp->agid = lp->lstk.agid;
 1391                 bp->lba = lp->lstk.lba;
 1392                 break;
 1393         case LINUX_DVD_LU_SEND_ASF:
 1394                 *bcode = DVDIOCREPORTKEY;
 1395                 bp->format = DVD_REPORT_ASF;
 1396                 bp->agid = lp->lsasf.agid;
 1397                 break;
 1398         case LINUX_DVD_INVALIDATE_AGID:
 1399                 *bcode = DVDIOCREPORTKEY;
 1400                 bp->format = DVD_INVALIDATE_AGID;
 1401                 bp->agid = lp->lsa.agid;
 1402                 break;
 1403         case LINUX_DVD_LU_SEND_RPC_STATE:
 1404                 *bcode = DVDIOCREPORTKEY;
 1405                 bp->format = DVD_REPORT_RPC;
 1406                 break;
 1407         case LINUX_DVD_HOST_SEND_RPC_STATE:
 1408                 *bcode = DVDIOCSENDKEY;
 1409                 bp->format = DVD_SEND_RPC;
 1410                 bp->region = lp->hrpcs.pdrc;
 1411                 break;
 1412         default:
 1413                 return (EINVAL);
 1414         }
 1415         return (0);
 1416 }
 1417 
 1418 static int
 1419 bsd_to_linux_dvd_authinfo(struct dvd_authinfo *bp, l_dvd_authinfo *lp)
 1420 {
 1421         switch (lp->type) {
 1422         case LINUX_DVD_LU_SEND_AGID:
 1423                 lp->lsa.agid = bp->agid;
 1424                 break;
 1425         case LINUX_DVD_HOST_SEND_CHALLENGE:
 1426                 lp->type = LINUX_DVD_LU_SEND_KEY1;
 1427                 break;
 1428         case LINUX_DVD_LU_SEND_KEY1:
 1429                 memcpy(lp->lsk.key, bp->keychal, sizeof(lp->lsk.key));
 1430                 break;
 1431         case LINUX_DVD_LU_SEND_CHALLENGE:
 1432                 memcpy(lp->lsc.chal, bp->keychal, sizeof(lp->lsc.chal));
 1433                 break;
 1434         case LINUX_DVD_HOST_SEND_KEY2:
 1435                 lp->type = LINUX_DVD_AUTH_ESTABLISHED;
 1436                 break;
 1437         case LINUX_DVD_LU_SEND_TITLE_KEY:
 1438                 memcpy(lp->lstk.title_key, bp->keychal,
 1439                     sizeof(lp->lstk.title_key));
 1440                 lp->lstk.cpm = bp->cpm;
 1441                 lp->lstk.cp_sec = bp->cp_sec;
 1442                 lp->lstk.cgms = bp->cgms;
 1443                 break;
 1444         case LINUX_DVD_LU_SEND_ASF:
 1445                 lp->lsasf.asf = bp->asf;
 1446                 break;
 1447         case LINUX_DVD_INVALIDATE_AGID:
 1448                 break;
 1449         case LINUX_DVD_LU_SEND_RPC_STATE:
 1450                 lp->lrpcs.type = bp->reg_type;
 1451                 lp->lrpcs.vra = bp->vend_rsts;
 1452                 lp->lrpcs.ucca = bp->user_rsts;
 1453                 lp->lrpcs.region_mask = bp->region;
 1454                 lp->lrpcs.rpc_scheme = bp->rpc_scheme;
 1455                 break;
 1456         case LINUX_DVD_HOST_SEND_RPC_STATE:
 1457                 break;
 1458         default:
 1459                 return (EINVAL);
 1460         }
 1461         return (0);
 1462 }
 1463 
 1464 static int
 1465 linux_ioctl_cdrom(struct thread *td, struct linux_ioctl_args *args)
 1466 {
 1467         cap_rights_t rights;
 1468         struct file *fp;
 1469         int error;
 1470 
 1471         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 1472         if (error != 0)
 1473                 return (error);
 1474         switch (args->cmd & 0xffff) {
 1475 
 1476         case LINUX_CDROMPAUSE:
 1477                 args->cmd = CDIOCPAUSE;
 1478                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1479                 break;
 1480 
 1481         case LINUX_CDROMRESUME:
 1482                 args->cmd = CDIOCRESUME;
 1483                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1484                 break;
 1485 
 1486         case LINUX_CDROMPLAYMSF:
 1487                 args->cmd = CDIOCPLAYMSF;
 1488                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1489                 break;
 1490 
 1491         case LINUX_CDROMPLAYTRKIND:
 1492                 args->cmd = CDIOCPLAYTRACKS;
 1493                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1494                 break;
 1495 
 1496         case LINUX_CDROMREADTOCHDR: {
 1497                 struct ioc_toc_header th;
 1498                 struct linux_cdrom_tochdr lth;
 1499                 error = fo_ioctl(fp, CDIOREADTOCHEADER, (caddr_t)&th,
 1500                     td->td_ucred, td);
 1501                 if (!error) {
 1502                         lth.cdth_trk0 = th.starting_track;
 1503                         lth.cdth_trk1 = th.ending_track;
 1504                         copyout(&lth, (void *)args->arg, sizeof(lth));
 1505                 }
 1506                 break;
 1507         }
 1508 
 1509         case LINUX_CDROMREADTOCENTRY: {
 1510                 struct linux_cdrom_tocentry lte;
 1511                 struct ioc_read_toc_single_entry irtse;
 1512 
 1513                 error = copyin((void *)args->arg, &lte, sizeof(lte));
 1514                 if (error)
 1515                         break;
 1516                 irtse.address_format = lte.cdte_format;
 1517                 irtse.track = lte.cdte_track;
 1518                 error = fo_ioctl(fp, CDIOREADTOCENTRY, (caddr_t)&irtse,
 1519                     td->td_ucred, td);
 1520                 if (!error) {
 1521                         lte.cdte_ctrl = irtse.entry.control;
 1522                         lte.cdte_adr = irtse.entry.addr_type;
 1523                         bsd_to_linux_msf_lba(irtse.address_format,
 1524                             &irtse.entry.addr, &lte.cdte_addr);
 1525                         error = copyout(&lte, (void *)args->arg, sizeof(lte));
 1526                 }
 1527                 break;
 1528         }
 1529 
 1530         case LINUX_CDROMSTOP:
 1531                 args->cmd = CDIOCSTOP;
 1532                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1533                 break;
 1534 
 1535         case LINUX_CDROMSTART:
 1536                 args->cmd = CDIOCSTART;
 1537                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1538                 break;
 1539 
 1540         case LINUX_CDROMEJECT:
 1541                 args->cmd = CDIOCEJECT;
 1542                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1543                 break;
 1544 
 1545         /* LINUX_CDROMVOLCTRL */
 1546 
 1547         case LINUX_CDROMSUBCHNL: {
 1548                 struct linux_cdrom_subchnl sc;
 1549                 struct ioc_read_subchannel bsdsc;
 1550                 struct cd_sub_channel_info bsdinfo;
 1551 
 1552                 error = copyin((void *)args->arg, &sc, sizeof(sc));
 1553                 if (error)
 1554                         break;
 1555 
 1556                 /*
 1557                  * Invoke the native ioctl and bounce the returned data through
 1558                  * the userspace buffer.  This works because the Linux structure
 1559                  * is the same size as our structures for the subchannel header
 1560                  * and position data.
 1561                  */
 1562                 bsdsc.address_format = CD_LBA_FORMAT;
 1563                 bsdsc.data_format = CD_CURRENT_POSITION;
 1564                 bsdsc.track = 0;
 1565                 bsdsc.data_len = sizeof(sc);
 1566                 bsdsc.data = (void *)args->arg;
 1567                 error = fo_ioctl(fp, CDIOCREADSUBCHANNEL, (caddr_t)&bsdsc,
 1568                     td->td_ucred, td);
 1569                 if (error)
 1570                         break;
 1571                 error = copyin((void *)args->arg, &bsdinfo, sizeof(bsdinfo));
 1572                 if (error)
 1573                         break;
 1574                 sc.cdsc_audiostatus = bsdinfo.header.audio_status;
 1575                 sc.cdsc_adr = bsdinfo.what.position.addr_type;
 1576                 sc.cdsc_ctrl = bsdinfo.what.position.control;
 1577                 sc.cdsc_trk = bsdinfo.what.position.track_number;
 1578                 sc.cdsc_ind = bsdinfo.what.position.index_number;
 1579                 set_linux_cdrom_addr(&sc.cdsc_absaddr, sc.cdsc_format,
 1580                     bsdinfo.what.position.absaddr.lba);
 1581                 set_linux_cdrom_addr(&sc.cdsc_reladdr, sc.cdsc_format,
 1582                     bsdinfo.what.position.reladdr.lba);
 1583                 error = copyout(&sc, (void *)args->arg, sizeof(sc));
 1584                 break;
 1585         }
 1586 
 1587         /* LINUX_CDROMREADMODE2 */
 1588         /* LINUX_CDROMREADMODE1 */
 1589         /* LINUX_CDROMREADAUDIO */
 1590         /* LINUX_CDROMEJECT_SW */
 1591         /* LINUX_CDROMMULTISESSION */
 1592         /* LINUX_CDROM_GET_UPC */
 1593 
 1594         case LINUX_CDROMRESET:
 1595                 args->cmd = CDIOCRESET;
 1596                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1597                 break;
 1598 
 1599         /* LINUX_CDROMVOLREAD */
 1600         /* LINUX_CDROMREADRAW */
 1601         /* LINUX_CDROMREADCOOKED */
 1602         /* LINUX_CDROMSEEK */
 1603         /* LINUX_CDROMPLAYBLK */
 1604         /* LINUX_CDROMREADALL */
 1605         /* LINUX_CDROMCLOSETRAY */
 1606         /* LINUX_CDROMLOADFROMSLOT */
 1607         /* LINUX_CDROMGETSPINDOWN */
 1608         /* LINUX_CDROMSETSPINDOWN */
 1609         /* LINUX_CDROM_SET_OPTIONS */
 1610         /* LINUX_CDROM_CLEAR_OPTIONS */
 1611         /* LINUX_CDROM_SELECT_SPEED */
 1612         /* LINUX_CDROM_SELECT_DISC */
 1613         /* LINUX_CDROM_MEDIA_CHANGED */
 1614         /* LINUX_CDROM_DRIVE_STATUS */
 1615         /* LINUX_CDROM_DISC_STATUS */
 1616         /* LINUX_CDROM_CHANGER_NSLOTS */
 1617         /* LINUX_CDROM_LOCKDOOR */
 1618         /* LINUX_CDROM_DEBUG */
 1619         /* LINUX_CDROM_GET_CAPABILITY */
 1620         /* LINUX_CDROMAUDIOBUFSIZ */
 1621 
 1622         case LINUX_DVD_READ_STRUCT: {
 1623                 l_dvd_struct *lds;
 1624                 struct dvd_struct *bds;
 1625 
 1626                 lds = malloc(sizeof(*lds), M_LINUX, M_WAITOK);
 1627                 bds = malloc(sizeof(*bds), M_LINUX, M_WAITOK);
 1628                 error = copyin((void *)args->arg, lds, sizeof(*lds));
 1629                 if (error)
 1630                         goto out;
 1631                 error = linux_to_bsd_dvd_struct(lds, bds);
 1632                 if (error)
 1633                         goto out;
 1634                 error = fo_ioctl(fp, DVDIOCREADSTRUCTURE, (caddr_t)bds,
 1635                     td->td_ucred, td);
 1636                 if (error)
 1637                         goto out;
 1638                 error = bsd_to_linux_dvd_struct(bds, lds);
 1639                 if (error)
 1640                         goto out;
 1641                 error = copyout(lds, (void *)args->arg, sizeof(*lds));
 1642         out:
 1643                 free(bds, M_LINUX);
 1644                 free(lds, M_LINUX);
 1645                 break;
 1646         }
 1647 
 1648         /* LINUX_DVD_WRITE_STRUCT */
 1649 
 1650         case LINUX_DVD_AUTH: {
 1651                 l_dvd_authinfo lda;
 1652                 struct dvd_authinfo bda;
 1653                 int bcode;
 1654 
 1655                 error = copyin((void *)args->arg, &lda, sizeof(lda));
 1656                 if (error)
 1657                         break;
 1658                 error = linux_to_bsd_dvd_authinfo(&lda, &bcode, &bda);
 1659                 if (error)
 1660                         break;
 1661                 error = fo_ioctl(fp, bcode, (caddr_t)&bda, td->td_ucred,
 1662                     td);
 1663                 if (error) {
 1664                         if (lda.type == LINUX_DVD_HOST_SEND_KEY2) {
 1665                                 lda.type = LINUX_DVD_AUTH_FAILURE;
 1666                                 copyout(&lda, (void *)args->arg, sizeof(lda));
 1667                         }
 1668                         break;
 1669                 }
 1670                 error = bsd_to_linux_dvd_authinfo(&bda, &lda);
 1671                 if (error)
 1672                         break;
 1673                 error = copyout(&lda, (void *)args->arg, sizeof(lda));
 1674                 break;
 1675         }
 1676 
 1677         case LINUX_SCSI_GET_BUS_NUMBER:
 1678         {
 1679                 struct sg_scsi_id id;
 1680 
 1681                 error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
 1682                     td->td_ucred, td);
 1683                 if (error)
 1684                         break;
 1685                 error = copyout(&id.channel, (void *)args->arg, sizeof(int));
 1686                 break;
 1687         }
 1688 
 1689         case LINUX_SCSI_GET_IDLUN:
 1690         {
 1691                 struct sg_scsi_id id;
 1692                 struct scsi_idlun idl;
 1693 
 1694                 error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
 1695                     td->td_ucred, td);
 1696                 if (error)
 1697                         break;
 1698                 idl.dev_id = (id.scsi_id & 0xff) + ((id.lun & 0xff) << 8) +
 1699                     ((id.channel & 0xff) << 16) + ((id.host_no & 0xff) << 24);
 1700                 idl.host_unique_id = id.host_no;
 1701                 error = copyout(&idl, (void *)args->arg, sizeof(idl));
 1702                 break;
 1703         }
 1704 
 1705         /* LINUX_CDROM_SEND_PACKET */
 1706         /* LINUX_CDROM_NEXT_WRITABLE */
 1707         /* LINUX_CDROM_LAST_WRITTEN */
 1708 
 1709         default:
 1710                 error = ENOIOCTL;
 1711                 break;
 1712         }
 1713 
 1714         fdrop(fp, td);
 1715         return (error);
 1716 }
 1717 
 1718 static int
 1719 linux_ioctl_vfat(struct thread *td, struct linux_ioctl_args *args)
 1720 {
 1721 
 1722         return (ENOTTY);
 1723 }
 1724 
 1725 /*
 1726  * Sound related ioctls
 1727  */
 1728 
 1729 struct linux_old_mixer_info {
 1730         char    id[16];
 1731         char    name[32];
 1732 };
 1733 
 1734 static u_int32_t dirbits[4] = { IOC_VOID, IOC_IN, IOC_OUT, IOC_INOUT };
 1735 
 1736 #define SETDIR(c)       (((c) & ~IOC_DIRMASK) | dirbits[args->cmd >> 30])
 1737 
 1738 static int
 1739 linux_ioctl_sound(struct thread *td, struct linux_ioctl_args *args)
 1740 {
 1741 
 1742         switch (args->cmd & 0xffff) {
 1743 
 1744         case LINUX_SOUND_MIXER_WRITE_VOLUME:
 1745                 args->cmd = SETDIR(SOUND_MIXER_WRITE_VOLUME);
 1746                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1747 
 1748         case LINUX_SOUND_MIXER_WRITE_BASS:
 1749                 args->cmd = SETDIR(SOUND_MIXER_WRITE_BASS);
 1750                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1751 
 1752         case LINUX_SOUND_MIXER_WRITE_TREBLE:
 1753                 args->cmd = SETDIR(SOUND_MIXER_WRITE_TREBLE);
 1754                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1755 
 1756         case LINUX_SOUND_MIXER_WRITE_SYNTH:
 1757                 args->cmd = SETDIR(SOUND_MIXER_WRITE_SYNTH);
 1758                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1759 
 1760         case LINUX_SOUND_MIXER_WRITE_PCM:
 1761                 args->cmd = SETDIR(SOUND_MIXER_WRITE_PCM);
 1762                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1763 
 1764         case LINUX_SOUND_MIXER_WRITE_SPEAKER:
 1765                 args->cmd = SETDIR(SOUND_MIXER_WRITE_SPEAKER);
 1766                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1767 
 1768         case LINUX_SOUND_MIXER_WRITE_LINE:
 1769                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE);
 1770                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1771 
 1772         case LINUX_SOUND_MIXER_WRITE_MIC:
 1773                 args->cmd = SETDIR(SOUND_MIXER_WRITE_MIC);
 1774                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1775 
 1776         case LINUX_SOUND_MIXER_WRITE_CD:
 1777                 args->cmd = SETDIR(SOUND_MIXER_WRITE_CD);
 1778                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1779 
 1780         case LINUX_SOUND_MIXER_WRITE_IMIX:
 1781                 args->cmd = SETDIR(SOUND_MIXER_WRITE_IMIX);
 1782                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1783 
 1784         case LINUX_SOUND_MIXER_WRITE_ALTPCM:
 1785                 args->cmd = SETDIR(SOUND_MIXER_WRITE_ALTPCM);
 1786                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1787 
 1788         case LINUX_SOUND_MIXER_WRITE_RECLEV:
 1789                 args->cmd = SETDIR(SOUND_MIXER_WRITE_RECLEV);
 1790                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1791 
 1792         case LINUX_SOUND_MIXER_WRITE_IGAIN:
 1793                 args->cmd = SETDIR(SOUND_MIXER_WRITE_IGAIN);
 1794                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1795 
 1796         case LINUX_SOUND_MIXER_WRITE_OGAIN:
 1797                 args->cmd = SETDIR(SOUND_MIXER_WRITE_OGAIN);
 1798                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1799 
 1800         case LINUX_SOUND_MIXER_WRITE_LINE1:
 1801                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE1);
 1802                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1803 
 1804         case LINUX_SOUND_MIXER_WRITE_LINE2:
 1805                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE2);
 1806                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1807 
 1808         case LINUX_SOUND_MIXER_WRITE_LINE3:
 1809                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE3);
 1810                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1811 
 1812         case LINUX_SOUND_MIXER_INFO: {
 1813                 /* Key on encoded length */
 1814                 switch ((args->cmd >> 16) & 0x1fff) {
 1815                 case 0x005c: {  /* SOUND_MIXER_INFO */
 1816                         args->cmd = SOUND_MIXER_INFO;
 1817                         return (sys_ioctl(td, (struct ioctl_args *)args));
 1818                 }
 1819                 case 0x0030: {  /* SOUND_OLD_MIXER_INFO */
 1820                         struct linux_old_mixer_info info;
 1821                         bzero(&info, sizeof(info));
 1822                         strncpy(info.id, "OSS", sizeof(info.id) - 1);
 1823                         strncpy(info.name, "FreeBSD OSS Mixer", sizeof(info.name) - 1);
 1824                         copyout(&info, (void *)args->arg, sizeof(info));
 1825                         return (0);
 1826                 }
 1827                 default:
 1828                         return (ENOIOCTL);
 1829                 }
 1830                 break;
 1831         }
 1832 
 1833         case LINUX_OSS_GETVERSION: {
 1834                 int version = linux_get_oss_version(td);
 1835                 return (copyout(&version, (void *)args->arg, sizeof(int)));
 1836         }
 1837 
 1838         case LINUX_SOUND_MIXER_READ_STEREODEVS:
 1839                 args->cmd = SOUND_MIXER_READ_STEREODEVS;
 1840                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1841 
 1842         case LINUX_SOUND_MIXER_READ_CAPS:
 1843                 args->cmd = SOUND_MIXER_READ_CAPS;
 1844                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1845 
 1846         case LINUX_SOUND_MIXER_READ_RECMASK:
 1847                 args->cmd = SOUND_MIXER_READ_RECMASK;
 1848                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1849 
 1850         case LINUX_SOUND_MIXER_READ_DEVMASK:
 1851                 args->cmd = SOUND_MIXER_READ_DEVMASK;
 1852                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1853 
 1854         case LINUX_SOUND_MIXER_WRITE_RECSRC:
 1855                 args->cmd = SETDIR(SOUND_MIXER_WRITE_RECSRC);
 1856                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1857 
 1858         case LINUX_SNDCTL_DSP_RESET:
 1859                 args->cmd = SNDCTL_DSP_RESET;
 1860                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1861 
 1862         case LINUX_SNDCTL_DSP_SYNC:
 1863                 args->cmd = SNDCTL_DSP_SYNC;
 1864                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1865 
 1866         case LINUX_SNDCTL_DSP_SPEED:
 1867                 args->cmd = SNDCTL_DSP_SPEED;
 1868                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1869 
 1870         case LINUX_SNDCTL_DSP_STEREO:
 1871                 args->cmd = SNDCTL_DSP_STEREO;
 1872                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1873 
 1874         case LINUX_SNDCTL_DSP_GETBLKSIZE: /* LINUX_SNDCTL_DSP_SETBLKSIZE */
 1875                 args->cmd = SNDCTL_DSP_GETBLKSIZE;
 1876                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1877 
 1878         case LINUX_SNDCTL_DSP_SETFMT:
 1879                 args->cmd = SNDCTL_DSP_SETFMT;
 1880                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1881 
 1882         case LINUX_SOUND_PCM_WRITE_CHANNELS:
 1883                 args->cmd = SOUND_PCM_WRITE_CHANNELS;
 1884                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1885 
 1886         case LINUX_SOUND_PCM_WRITE_FILTER:
 1887                 args->cmd = SOUND_PCM_WRITE_FILTER;
 1888                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1889 
 1890         case LINUX_SNDCTL_DSP_POST:
 1891                 args->cmd = SNDCTL_DSP_POST;
 1892                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1893 
 1894         case LINUX_SNDCTL_DSP_SUBDIVIDE:
 1895                 args->cmd = SNDCTL_DSP_SUBDIVIDE;
 1896                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1897 
 1898         case LINUX_SNDCTL_DSP_SETFRAGMENT:
 1899                 args->cmd = SNDCTL_DSP_SETFRAGMENT;
 1900                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1901 
 1902         case LINUX_SNDCTL_DSP_GETFMTS:
 1903                 args->cmd = SNDCTL_DSP_GETFMTS;
 1904                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1905 
 1906         case LINUX_SNDCTL_DSP_GETOSPACE:
 1907                 args->cmd = SNDCTL_DSP_GETOSPACE;
 1908                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1909 
 1910         case LINUX_SNDCTL_DSP_GETISPACE:
 1911                 args->cmd = SNDCTL_DSP_GETISPACE;
 1912                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1913 
 1914         case LINUX_SNDCTL_DSP_NONBLOCK:
 1915                 args->cmd = SNDCTL_DSP_NONBLOCK;
 1916                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1917 
 1918         case LINUX_SNDCTL_DSP_GETCAPS:
 1919                 args->cmd = SNDCTL_DSP_GETCAPS;
 1920                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1921 
 1922         case LINUX_SNDCTL_DSP_SETTRIGGER: /* LINUX_SNDCTL_GETTRIGGER */
 1923                 args->cmd = SNDCTL_DSP_SETTRIGGER;
 1924                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1925 
 1926         case LINUX_SNDCTL_DSP_GETIPTR:
 1927                 args->cmd = SNDCTL_DSP_GETIPTR;
 1928                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1929 
 1930         case LINUX_SNDCTL_DSP_GETOPTR:
 1931                 args->cmd = SNDCTL_DSP_GETOPTR;
 1932                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1933 
 1934         case LINUX_SNDCTL_DSP_SETDUPLEX:
 1935                 args->cmd = SNDCTL_DSP_SETDUPLEX;
 1936                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1937 
 1938         case LINUX_SNDCTL_DSP_GETODELAY:
 1939                 args->cmd = SNDCTL_DSP_GETODELAY;
 1940                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1941 
 1942         case LINUX_SNDCTL_SEQ_RESET:
 1943                 args->cmd = SNDCTL_SEQ_RESET;
 1944                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1945 
 1946         case LINUX_SNDCTL_SEQ_SYNC:
 1947                 args->cmd = SNDCTL_SEQ_SYNC;
 1948                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1949 
 1950         case LINUX_SNDCTL_SYNTH_INFO:
 1951                 args->cmd = SNDCTL_SYNTH_INFO;
 1952                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1953 
 1954         case LINUX_SNDCTL_SEQ_CTRLRATE:
 1955                 args->cmd = SNDCTL_SEQ_CTRLRATE;
 1956                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1957 
 1958         case LINUX_SNDCTL_SEQ_GETOUTCOUNT:
 1959                 args->cmd = SNDCTL_SEQ_GETOUTCOUNT;
 1960                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1961 
 1962         case LINUX_SNDCTL_SEQ_GETINCOUNT:
 1963                 args->cmd = SNDCTL_SEQ_GETINCOUNT;
 1964                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1965 
 1966         case LINUX_SNDCTL_SEQ_PERCMODE:
 1967                 args->cmd = SNDCTL_SEQ_PERCMODE;
 1968                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1969 
 1970         case LINUX_SNDCTL_FM_LOAD_INSTR:
 1971                 args->cmd = SNDCTL_FM_LOAD_INSTR;
 1972                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1973 
 1974         case LINUX_SNDCTL_SEQ_TESTMIDI:
 1975                 args->cmd = SNDCTL_SEQ_TESTMIDI;
 1976                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1977 
 1978         case LINUX_SNDCTL_SEQ_RESETSAMPLES:
 1979                 args->cmd = SNDCTL_SEQ_RESETSAMPLES;
 1980                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1981 
 1982         case LINUX_SNDCTL_SEQ_NRSYNTHS:
 1983                 args->cmd = SNDCTL_SEQ_NRSYNTHS;
 1984                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1985 
 1986         case LINUX_SNDCTL_SEQ_NRMIDIS:
 1987                 args->cmd = SNDCTL_SEQ_NRMIDIS;
 1988                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1989 
 1990         case LINUX_SNDCTL_MIDI_INFO:
 1991                 args->cmd = SNDCTL_MIDI_INFO;
 1992                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1993 
 1994         case LINUX_SNDCTL_SEQ_TRESHOLD:
 1995                 args->cmd = SNDCTL_SEQ_TRESHOLD;
 1996                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1997 
 1998         case LINUX_SNDCTL_SYNTH_MEMAVL:
 1999                 args->cmd = SNDCTL_SYNTH_MEMAVL;
 2000                 return (sys_ioctl(td, (struct ioctl_args *)args));
 2001 
 2002         }
 2003 
 2004         return (ENOIOCTL);
 2005 }
 2006 
 2007 /*
 2008  * Console related ioctls
 2009  */
 2010 
 2011 static int
 2012 linux_ioctl_console(struct thread *td, struct linux_ioctl_args *args)
 2013 {
 2014         cap_rights_t rights;
 2015         struct file *fp;
 2016         int error;
 2017 
 2018         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 2019         if (error != 0)
 2020                 return (error);
 2021         switch (args->cmd & 0xffff) {
 2022 
 2023         case LINUX_KIOCSOUND:
 2024                 args->cmd = KIOCSOUND;
 2025                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2026                 break;
 2027 
 2028         case LINUX_KDMKTONE:
 2029                 args->cmd = KDMKTONE;
 2030                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2031                 break;
 2032 
 2033         case LINUX_KDGETLED:
 2034                 args->cmd = KDGETLED;
 2035                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2036                 break;
 2037 
 2038         case LINUX_KDSETLED:
 2039                 args->cmd = KDSETLED;
 2040                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2041                 break;
 2042 
 2043         case LINUX_KDSETMODE:
 2044                 args->cmd = KDSETMODE;
 2045                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2046                 break;
 2047 
 2048         case LINUX_KDGETMODE:
 2049                 args->cmd = KDGETMODE;
 2050                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2051                 break;
 2052 
 2053         case LINUX_KDGKBMODE:
 2054                 args->cmd = KDGKBMODE;
 2055                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2056                 break;
 2057 
 2058         case LINUX_KDSKBMODE: {
 2059                 int kbdmode;
 2060                 switch (args->arg) {
 2061                 case LINUX_KBD_RAW:
 2062                         kbdmode = K_RAW;
 2063                         break;
 2064                 case LINUX_KBD_XLATE:
 2065                         kbdmode = K_XLATE;
 2066                         break;
 2067                 case LINUX_KBD_MEDIUMRAW:
 2068                         kbdmode = K_RAW;
 2069                         break;
 2070                 default:
 2071                         fdrop(fp, td);
 2072                         return (EINVAL);
 2073                 }
 2074                 error = (fo_ioctl(fp, KDSKBMODE, (caddr_t)&kbdmode,
 2075                     td->td_ucred, td));
 2076                 break;
 2077         }
 2078 
 2079         case LINUX_VT_OPENQRY:
 2080                 args->cmd = VT_OPENQRY;
 2081                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2082                 break;
 2083 
 2084         case LINUX_VT_GETMODE:
 2085                 args->cmd = VT_GETMODE;
 2086                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2087                 break;
 2088 
 2089         case LINUX_VT_SETMODE: {
 2090                 struct vt_mode mode;
 2091                 if ((error = copyin((void *)args->arg, &mode, sizeof(mode))))
 2092                         break;
 2093                 if (LINUX_SIG_VALID(mode.relsig))
 2094                         mode.relsig = linux_to_bsd_signal(mode.relsig);
 2095                 else
 2096                         mode.relsig = 0;
 2097                 if (LINUX_SIG_VALID(mode.acqsig))
 2098                         mode.acqsig = linux_to_bsd_signal(mode.acqsig);
 2099                 else
 2100                         mode.acqsig = 0;
 2101                 /* XXX. Linux ignores frsig and set it to 0. */
 2102                 mode.frsig = 0;
 2103                 if ((error = copyout(&mode, (void *)args->arg, sizeof(mode))))
 2104                         break;
 2105                 args->cmd = VT_SETMODE;
 2106                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2107                 break;
 2108         }
 2109 
 2110         case LINUX_VT_GETSTATE:
 2111                 args->cmd = VT_GETACTIVE;
 2112                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2113                 break;
 2114 
 2115         case LINUX_VT_RELDISP:
 2116                 args->cmd = VT_RELDISP;
 2117                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2118                 break;
 2119 
 2120         case LINUX_VT_ACTIVATE:
 2121                 args->cmd = VT_ACTIVATE;
 2122                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2123                 break;
 2124 
 2125         case LINUX_VT_WAITACTIVE:
 2126                 args->cmd = VT_WAITACTIVE;
 2127                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2128                 break;
 2129 
 2130         default:
 2131                 error = ENOIOCTL;
 2132                 break;
 2133         }
 2134 
 2135         fdrop(fp, td);
 2136         return (error);
 2137 }
 2138 
 2139 /*
 2140  * Criteria for interface name translation
 2141  */
 2142 #define IFP_IS_ETH(ifp) (ifp->if_type == IFT_ETHER)
 2143 
 2144 /*
 2145  * Translate a Linux interface name to a FreeBSD interface name,
 2146  * and return the associated ifnet structure
 2147  * bsdname and lxname need to be least IFNAMSIZ bytes long, but
 2148  * can point to the same buffer.
 2149  */
 2150 
 2151 static struct ifnet *
 2152 ifname_linux_to_bsd(struct thread *td, const char *lxname, char *bsdname)
 2153 {
 2154         struct ifnet *ifp;
 2155         int len, unit;
 2156         char *ep;
 2157         int is_eth, index;
 2158 
 2159         for (len = 0; len < LINUX_IFNAMSIZ; ++len)
 2160                 if (!isalpha(lxname[len]))
 2161                         break;
 2162         if (len == 0 || len == LINUX_IFNAMSIZ)
 2163                 return (NULL);
 2164         unit = (int)strtoul(lxname + len, &ep, 10);
 2165         if (ep == NULL || ep == lxname + len || ep >= lxname + LINUX_IFNAMSIZ)
 2166                 return (NULL);
 2167         index = 0;
 2168         is_eth = (len == 3 && !strncmp(lxname, "eth", len)) ? 1 : 0;
 2169         CURVNET_SET(TD_TO_VNET(td));
 2170         IFNET_RLOCK();
 2171         TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2172                 /*
 2173                  * Allow Linux programs to use FreeBSD names. Don't presume
 2174                  * we never have an interface named "eth", so don't make
 2175                  * the test optional based on is_eth.
 2176                  */
 2177                 if (strncmp(ifp->if_xname, lxname, LINUX_IFNAMSIZ) == 0)
 2178                         break;
 2179                 if (is_eth && IFP_IS_ETH(ifp) && unit == index++)
 2180                         break;
 2181         }
 2182         IFNET_RUNLOCK();
 2183         CURVNET_RESTORE();
 2184         if (ifp != NULL)
 2185                 strlcpy(bsdname, ifp->if_xname, IFNAMSIZ);
 2186         return (ifp);
 2187 }
 2188 
 2189 /*
 2190  * Implement the SIOCGIFNAME ioctl
 2191  */
 2192 
 2193 static int
 2194 linux_ioctl_ifname(struct thread *td, struct l_ifreq *uifr)
 2195 {
 2196         struct l_ifreq ifr;
 2197         struct ifnet *ifp;
 2198         int error, ethno, index;
 2199 
 2200         error = copyin(uifr, &ifr, sizeof(ifr));
 2201         if (error != 0)
 2202                 return (error);
 2203 
 2204         CURVNET_SET(TD_TO_VNET(curthread));
 2205         IFNET_RLOCK();
 2206         index = 1;      /* ifr.ifr_ifindex starts from 1 */
 2207         ethno = 0;
 2208         error = ENODEV;
 2209         TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2210                 if (ifr.ifr_ifindex == index) {
 2211                         if (IFP_IS_ETH(ifp))
 2212                                 snprintf(ifr.ifr_name, LINUX_IFNAMSIZ,
 2213                                     "eth%d", ethno);
 2214                         else
 2215                                 strlcpy(ifr.ifr_name, ifp->if_xname,
 2216                                     LINUX_IFNAMSIZ);
 2217                         error = 0;
 2218                         break;
 2219                 }
 2220                 if (IFP_IS_ETH(ifp))
 2221                         ethno++;
 2222                 index++;
 2223         }
 2224         IFNET_RUNLOCK();
 2225         if (error == 0)
 2226                 error = copyout(&ifr, uifr, sizeof(ifr));
 2227         CURVNET_RESTORE();
 2228 
 2229         return (error);
 2230 }
 2231 
 2232 /*
 2233  * Implement the SIOCGIFCONF ioctl
 2234  */
 2235 
 2236 static int
 2237 linux_ifconf(struct thread *td, struct ifconf *uifc)
 2238 {
 2239 #ifdef COMPAT_LINUX32
 2240         struct l_ifconf ifc;
 2241 #else
 2242         struct ifconf ifc;
 2243 #endif
 2244         struct l_ifreq ifr;
 2245         struct ifnet *ifp;
 2246         struct ifaddr *ifa;
 2247         struct sbuf *sb;
 2248         int error, ethno, full = 0, valid_len, max_len;
 2249 
 2250         error = copyin(uifc, &ifc, sizeof(ifc));
 2251         if (error != 0)
 2252                 return (error);
 2253 
 2254         max_len = MAXPHYS - 1;
 2255 
 2256         CURVNET_SET(TD_TO_VNET(td));
 2257         /* handle the 'request buffer size' case */
 2258         if ((l_uintptr_t)ifc.ifc_buf == PTROUT(NULL)) {
 2259                 ifc.ifc_len = 0;
 2260                 IFNET_RLOCK();
 2261                 TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2262                         TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2263                                 struct sockaddr *sa = ifa->ifa_addr;
 2264                                 if (sa->sa_family == AF_INET)
 2265                                         ifc.ifc_len += sizeof(ifr);
 2266                         }
 2267                 }
 2268                 IFNET_RUNLOCK();
 2269                 error = copyout(&ifc, uifc, sizeof(ifc));
 2270                 CURVNET_RESTORE();
 2271                 return (error);
 2272         }
 2273 
 2274         if (ifc.ifc_len <= 0) {
 2275                 CURVNET_RESTORE();
 2276                 return (EINVAL);
 2277         }
 2278 
 2279 again:
 2280         /* Keep track of eth interfaces */
 2281         ethno = 0;
 2282         if (ifc.ifc_len <= max_len) {
 2283                 max_len = ifc.ifc_len;
 2284                 full = 1;
 2285         }
 2286         sb = sbuf_new(NULL, NULL, max_len + 1, SBUF_FIXEDLEN);
 2287         max_len = 0;
 2288         valid_len = 0;
 2289 
 2290         /* Return all AF_INET addresses of all interfaces */
 2291         IFNET_RLOCK();
 2292         TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2293                 int addrs = 0;
 2294 
 2295                 bzero(&ifr, sizeof(ifr));
 2296                 if (IFP_IS_ETH(ifp))
 2297                         snprintf(ifr.ifr_name, LINUX_IFNAMSIZ, "eth%d",
 2298                             ethno++);
 2299                 else
 2300                         strlcpy(ifr.ifr_name, ifp->if_xname, LINUX_IFNAMSIZ);
 2301 
 2302                 /* Walk the address list */
 2303                 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2304                         struct sockaddr *sa = ifa->ifa_addr;
 2305 
 2306                         if (sa->sa_family == AF_INET) {
 2307                                 ifr.ifr_addr.sa_family = LINUX_AF_INET;
 2308                                 memcpy(ifr.ifr_addr.sa_data, sa->sa_data,
 2309                                     sizeof(ifr.ifr_addr.sa_data));
 2310                                 sbuf_bcat(sb, &ifr, sizeof(ifr));
 2311                                 max_len += sizeof(ifr);
 2312                                 addrs++;
 2313                         }
 2314 
 2315                         if (sbuf_error(sb) == 0)
 2316                                 valid_len = sbuf_len(sb);
 2317                 }
 2318                 if (addrs == 0) {
 2319                         bzero((caddr_t)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
 2320                         sbuf_bcat(sb, &ifr, sizeof(ifr));
 2321                         max_len += sizeof(ifr);
 2322 
 2323                         if (sbuf_error(sb) == 0)
 2324                                 valid_len = sbuf_len(sb);
 2325                 }
 2326         }
 2327         IFNET_RUNLOCK();
 2328 
 2329         if (valid_len != max_len && !full) {
 2330                 sbuf_delete(sb);
 2331                 goto again;
 2332         }
 2333 
 2334         ifc.ifc_len = valid_len;
 2335         sbuf_finish(sb);
 2336         error = copyout(sbuf_data(sb), PTRIN(ifc.ifc_buf), ifc.ifc_len);
 2337         if (error == 0)
 2338                 error = copyout(&ifc, uifc, sizeof(ifc));
 2339         sbuf_delete(sb);
 2340         CURVNET_RESTORE();
 2341 
 2342         return (error);
 2343 }
 2344 
 2345 static int
 2346 linux_gifflags(struct thread *td, struct ifnet *ifp, struct l_ifreq *ifr)
 2347 {
 2348         l_short flags;
 2349 
 2350         flags = (ifp->if_flags | ifp->if_drv_flags) & 0xffff;
 2351         /* these flags have no Linux equivalent */
 2352         flags &= ~(IFF_DRV_OACTIVE|IFF_SIMPLEX|
 2353             IFF_LINK0|IFF_LINK1|IFF_LINK2);
 2354         /* Linux' multicast flag is in a different bit */
 2355         if (flags & IFF_MULTICAST) {
 2356                 flags &= ~IFF_MULTICAST;
 2357                 flags |= 0x1000;
 2358         }
 2359 
 2360         return (copyout(&flags, &ifr->ifr_flags, sizeof(flags)));
 2361 }
 2362 
 2363 #define ARPHRD_ETHER    1
 2364 #define ARPHRD_LOOPBACK 772
 2365 
 2366 static int
 2367 linux_gifhwaddr(struct ifnet *ifp, struct l_ifreq *ifr)
 2368 {
 2369         struct ifaddr *ifa;
 2370         struct sockaddr_dl *sdl;
 2371         struct l_sockaddr lsa;
 2372 
 2373         if (ifp->if_type == IFT_LOOP) {
 2374                 bzero(&lsa, sizeof(lsa));
 2375                 lsa.sa_family = ARPHRD_LOOPBACK;
 2376                 return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof(lsa)));
 2377         }
 2378 
 2379         if (ifp->if_type != IFT_ETHER)
 2380                 return (ENOENT);
 2381 
 2382         TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2383                 sdl = (struct sockaddr_dl*)ifa->ifa_addr;
 2384                 if (sdl != NULL && (sdl->sdl_family == AF_LINK) &&
 2385                     (sdl->sdl_type == IFT_ETHER)) {
 2386                         bzero(&lsa, sizeof(lsa));
 2387                         lsa.sa_family = ARPHRD_ETHER;
 2388                         bcopy(LLADDR(sdl), lsa.sa_data, LINUX_IFHWADDRLEN);
 2389                         return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof(lsa)));
 2390                 }
 2391         }
 2392 
 2393         return (ENOENT);
 2394 }
 2395 
 2396 
 2397  /*
 2398 * If we fault in bsd_to_linux_ifreq() then we will fault when we call
 2399 * the native ioctl().  Thus, we don't really need to check the return
 2400 * value of this function.
 2401 */
 2402 static int
 2403 bsd_to_linux_ifreq(struct ifreq *arg)
 2404 {
 2405         struct ifreq ifr;
 2406         size_t ifr_len = sizeof(struct ifreq);
 2407         int error;
 2408 
 2409         if ((error = copyin(arg, &ifr, ifr_len)))
 2410                 return (error);
 2411 
 2412         *(u_short *)&ifr.ifr_addr = ifr.ifr_addr.sa_family;
 2413 
 2414         error = copyout(&ifr, arg, ifr_len);
 2415 
 2416         return (error);
 2417 }
 2418 
 2419 /*
 2420  * Socket related ioctls
 2421  */
 2422 
 2423 static int
 2424 linux_ioctl_socket(struct thread *td, struct linux_ioctl_args *args)
 2425 {
 2426         char lifname[LINUX_IFNAMSIZ], ifname[IFNAMSIZ];
 2427         cap_rights_t rights;
 2428         struct ifnet *ifp;
 2429         struct file *fp;
 2430         int error, type;
 2431 
 2432         ifp = NULL;
 2433         error = 0;
 2434 
 2435         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 2436         if (error != 0)
 2437                 return (error);
 2438         type = fp->f_type;
 2439         fdrop(fp, td);
 2440         if (type != DTYPE_SOCKET) {
 2441                 /* not a socket - probably a tap / vmnet device */
 2442                 switch (args->cmd) {
 2443                 case LINUX_SIOCGIFADDR:
 2444                 case LINUX_SIOCSIFADDR:
 2445                 case LINUX_SIOCGIFFLAGS:
 2446                         return (linux_ioctl_special(td, args));
 2447                 default:
 2448                         return (ENOIOCTL);
 2449                 }
 2450         }
 2451 
 2452         switch (args->cmd & 0xffff) {
 2453 
 2454         case LINUX_FIOGETOWN:
 2455         case LINUX_FIOSETOWN:
 2456         case LINUX_SIOCADDMULTI:
 2457         case LINUX_SIOCATMARK:
 2458         case LINUX_SIOCDELMULTI:
 2459         case LINUX_SIOCGIFNAME:
 2460         case LINUX_SIOCGIFCONF:
 2461         case LINUX_SIOCGPGRP:
 2462         case LINUX_SIOCSPGRP:
 2463         case LINUX_SIOCGIFCOUNT:
 2464                 /* these ioctls don't take an interface name */
 2465 #ifdef DEBUG
 2466                 printf("%s(): ioctl %d\n", __func__,
 2467                     args->cmd & 0xffff);
 2468 #endif
 2469                 break;
 2470 
 2471         case LINUX_SIOCGIFFLAGS:
 2472         case LINUX_SIOCGIFADDR:
 2473         case LINUX_SIOCSIFADDR:
 2474         case LINUX_SIOCGIFDSTADDR:
 2475         case LINUX_SIOCGIFBRDADDR:
 2476         case LINUX_SIOCGIFNETMASK:
 2477         case LINUX_SIOCSIFNETMASK:
 2478         case LINUX_SIOCGIFMTU:
 2479         case LINUX_SIOCSIFMTU:
 2480         case LINUX_SIOCSIFNAME:
 2481         case LINUX_SIOCGIFHWADDR:
 2482         case LINUX_SIOCSIFHWADDR:
 2483         case LINUX_SIOCDEVPRIVATE:
 2484         case LINUX_SIOCDEVPRIVATE+1:
 2485         case LINUX_SIOCGIFINDEX:
 2486                 /* copy in the interface name and translate it. */
 2487                 error = copyin((void *)args->arg, lifname, LINUX_IFNAMSIZ);
 2488                 if (error != 0)
 2489                         return (error);
 2490 #ifdef DEBUG
 2491                 printf("%s(): ioctl %d on %.*s\n", __func__,
 2492                     args->cmd & 0xffff, LINUX_IFNAMSIZ, lifname);
 2493 #endif
 2494                 memset(ifname, 0, sizeof(ifname));
 2495                 ifp = ifname_linux_to_bsd(td, lifname, ifname);
 2496                 if (ifp == NULL)
 2497                         return (EINVAL);
 2498                 /*
 2499                  * We need to copy it back out in case we pass the
 2500                  * request on to our native ioctl(), which will expect
 2501                  * the ifreq to be in user space and have the correct
 2502                  * interface name.
 2503                  */
 2504                 error = copyout(ifname, (void *)args->arg, IFNAMSIZ);
 2505                 if (error != 0)
 2506                         return (error);
 2507 #ifdef DEBUG
 2508                 printf("%s(): %s translated to %s\n", __func__,
 2509                     lifname, ifname);
 2510 #endif
 2511                 break;
 2512 
 2513         default:
 2514                 return (ENOIOCTL);
 2515         }
 2516 
 2517         switch (args->cmd & 0xffff) {
 2518 
 2519         case LINUX_FIOSETOWN:
 2520                 args->cmd = FIOSETOWN;
 2521                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2522                 break;
 2523 
 2524         case LINUX_SIOCSPGRP:
 2525                 args->cmd = SIOCSPGRP;
 2526                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2527                 break;
 2528 
 2529         case LINUX_FIOGETOWN:
 2530                 args->cmd = FIOGETOWN;
 2531                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2532                 break;
 2533 
 2534         case LINUX_SIOCGPGRP:
 2535                 args->cmd = SIOCGPGRP;
 2536                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2537                 break;
 2538 
 2539         case LINUX_SIOCATMARK:
 2540                 args->cmd = SIOCATMARK;
 2541                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2542                 break;
 2543 
 2544         /* LINUX_SIOCGSTAMP */
 2545 
 2546         case LINUX_SIOCGIFNAME:
 2547                 error = linux_ioctl_ifname(td, (struct l_ifreq *)args->arg);
 2548                 break;
 2549 
 2550         case LINUX_SIOCGIFCONF:
 2551                 error = linux_ifconf(td, (struct ifconf *)args->arg);
 2552                 break;
 2553 
 2554         case LINUX_SIOCGIFFLAGS:
 2555                 args->cmd = SIOCGIFFLAGS;
 2556                 error = linux_gifflags(td, ifp, (struct l_ifreq *)args->arg);
 2557                 break;
 2558 
 2559         case LINUX_SIOCGIFADDR:
 2560                 args->cmd = SIOCGIFADDR;
 2561                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2562                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2563                 break;
 2564 
 2565         case LINUX_SIOCSIFADDR:
 2566                 /* XXX probably doesn't work, included for completeness */
 2567                 args->cmd = SIOCSIFADDR;
 2568                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2569                 break;
 2570 
 2571         case LINUX_SIOCGIFDSTADDR:
 2572                 args->cmd = SIOCGIFDSTADDR;
 2573                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2574                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2575                 break;
 2576 
 2577         case LINUX_SIOCGIFBRDADDR:
 2578                 args->cmd = SIOCGIFBRDADDR;
 2579                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2580                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2581                 break;
 2582 
 2583         case LINUX_SIOCGIFNETMASK:
 2584                 args->cmd = SIOCGIFNETMASK;
 2585                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2586                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2587                 break;
 2588 
 2589         case LINUX_SIOCSIFNETMASK:
 2590                 error = ENOIOCTL;
 2591                 break;
 2592 
 2593         case LINUX_SIOCGIFMTU:
 2594                 args->cmd = SIOCGIFMTU;
 2595                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2596                 break;
 2597 
 2598         case LINUX_SIOCSIFMTU:
 2599                 args->cmd = SIOCSIFMTU;
 2600                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2601                 break;
 2602 
 2603         case LINUX_SIOCSIFNAME:
 2604                 error = ENOIOCTL;
 2605                 break;
 2606 
 2607         case LINUX_SIOCGIFHWADDR:
 2608                 error = linux_gifhwaddr(ifp, (struct l_ifreq *)args->arg);
 2609                 break;
 2610 
 2611         case LINUX_SIOCSIFHWADDR:
 2612                 error = ENOIOCTL;
 2613                 break;
 2614 
 2615         case LINUX_SIOCADDMULTI:
 2616                 args->cmd = SIOCADDMULTI;
 2617                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2618                 break;
 2619 
 2620         case LINUX_SIOCDELMULTI:
 2621                 args->cmd = SIOCDELMULTI;
 2622                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2623                 break;
 2624 
 2625         case LINUX_SIOCGIFINDEX:
 2626                 args->cmd = SIOCGIFINDEX;
 2627                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2628                 break;
 2629 
 2630         case LINUX_SIOCGIFCOUNT:
 2631                 error = 0;
 2632                 break;
 2633 
 2634         /*
 2635          * XXX This is slightly bogus, but these ioctls are currently
 2636          * XXX only used by the aironet (if_an) network driver.
 2637          */
 2638         case LINUX_SIOCDEVPRIVATE:
 2639                 args->cmd = SIOCGPRIVATE_0;
 2640                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2641                 break;
 2642 
 2643         case LINUX_SIOCDEVPRIVATE+1:
 2644                 args->cmd = SIOCGPRIVATE_1;
 2645                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2646                 break;
 2647         }
 2648 
 2649         if (ifp != NULL)
 2650                 /* restore the original interface name */
 2651                 copyout(lifname, (void *)args->arg, LINUX_IFNAMSIZ);
 2652 
 2653 #ifdef DEBUG
 2654         printf("%s(): returning %d\n", __func__, error);
 2655 #endif
 2656         return (error);
 2657 }
 2658 
 2659 /*
 2660  * Device private ioctl handler
 2661  */
 2662 static int
 2663 linux_ioctl_private(struct thread *td, struct linux_ioctl_args *args)
 2664 {
 2665         cap_rights_t rights;
 2666         struct file *fp;
 2667         int error, type;
 2668 
 2669         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 2670         if (error != 0)
 2671                 return (error);
 2672         type = fp->f_type;
 2673         fdrop(fp, td);
 2674         if (type == DTYPE_SOCKET)
 2675                 return (linux_ioctl_socket(td, args));
 2676         return (ENOIOCTL);
 2677 }
 2678 
 2679 /*
 2680  * DRM ioctl handler (sys/dev/drm)
 2681  */
 2682 static int
 2683 linux_ioctl_drm(struct thread *td, struct linux_ioctl_args *args)
 2684 {
 2685         args->cmd = SETDIR(args->cmd);
 2686         return (sys_ioctl(td, (struct ioctl_args *)args));
 2687 }
 2688 
 2689 #ifdef COMPAT_LINUX32
 2690 #define CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0)
 2691 #define PTRIN_CP(src,dst,fld) \
 2692         do { (dst).fld = PTRIN((src).fld); } while (0)
 2693 #define PTROUT_CP(src,dst,fld) \
 2694         do { (dst).fld = PTROUT((src).fld); } while (0)
 2695 
 2696 static int
 2697 linux_ioctl_sg_io(struct thread *td, struct linux_ioctl_args *args)
 2698 {
 2699         struct sg_io_hdr io;
 2700         struct sg_io_hdr32 io32;
 2701         cap_rights_t rights;
 2702         struct file *fp;
 2703         int error;
 2704 
 2705         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 2706         if (error != 0) {
 2707                 printf("sg_linux_ioctl: fget returned %d\n", error);
 2708                 return (error);
 2709         }
 2710 
 2711         if ((error = copyin((void *)args->arg, &io32, sizeof(io32))) != 0)
 2712                 goto out;
 2713 
 2714         CP(io32, io, interface_id);
 2715         CP(io32, io, dxfer_direction);
 2716         CP(io32, io, cmd_len);
 2717         CP(io32, io, mx_sb_len);
 2718         CP(io32, io, iovec_count);
 2719         CP(io32, io, dxfer_len);
 2720         PTRIN_CP(io32, io, dxferp);
 2721         PTRIN_CP(io32, io, cmdp);
 2722         PTRIN_CP(io32, io, sbp);
 2723         CP(io32, io, timeout);
 2724         CP(io32, io, flags);
 2725         CP(io32, io, pack_id);
 2726         PTRIN_CP(io32, io, usr_ptr);
 2727         CP(io32, io, status);
 2728         CP(io32, io, masked_status);
 2729         CP(io32, io, msg_status);
 2730         CP(io32, io, sb_len_wr);
 2731         CP(io32, io, host_status);
 2732         CP(io32, io, driver_status);
 2733         CP(io32, io, resid);
 2734         CP(io32, io, duration);
 2735         CP(io32, io, info);
 2736 
 2737         if ((error = fo_ioctl(fp, SG_IO, (caddr_t)&io, td->td_ucred, td)) != 0)
 2738                 goto out;
 2739 
 2740         CP(io, io32, interface_id);
 2741         CP(io, io32, dxfer_direction);
 2742         CP(io, io32, cmd_len);
 2743         CP(io, io32, mx_sb_len);
 2744         CP(io, io32, iovec_count);
 2745         CP(io, io32, dxfer_len);
 2746         PTROUT_CP(io, io32, dxferp);
 2747         PTROUT_CP(io, io32, cmdp);
 2748         PTROUT_CP(io, io32, sbp);
 2749         CP(io, io32, timeout);
 2750         CP(io, io32, flags);
 2751         CP(io, io32, pack_id);
 2752         PTROUT_CP(io, io32, usr_ptr);
 2753         CP(io, io32, status);
 2754         CP(io, io32, masked_status);
 2755         CP(io, io32, msg_status);
 2756         CP(io, io32, sb_len_wr);
 2757         CP(io, io32, host_status);
 2758         CP(io, io32, driver_status);
 2759         CP(io, io32, resid);
 2760         CP(io, io32, duration);
 2761         CP(io, io32, info);
 2762 
 2763         error = copyout(&io32, (void *)args->arg, sizeof(io32));
 2764 
 2765 out:
 2766         fdrop(fp, td);
 2767         return (error);
 2768 }
 2769 #endif
 2770 
 2771 static int
 2772 linux_ioctl_sg(struct thread *td, struct linux_ioctl_args *args)
 2773 {
 2774 
 2775         switch (args->cmd) {
 2776         case LINUX_SG_GET_VERSION_NUM:
 2777                 args->cmd = SG_GET_VERSION_NUM;
 2778                 break;
 2779         case LINUX_SG_SET_TIMEOUT:
 2780                 args->cmd = SG_SET_TIMEOUT;
 2781                 break;
 2782         case LINUX_SG_GET_TIMEOUT:
 2783                 args->cmd = SG_GET_TIMEOUT;
 2784                 break;
 2785         case LINUX_SG_IO:
 2786                 args->cmd = SG_IO;
 2787 #ifdef COMPAT_LINUX32
 2788                 return (linux_ioctl_sg_io(td, args));
 2789 #endif
 2790                 break;
 2791         case LINUX_SG_GET_RESERVED_SIZE:
 2792                 args->cmd = SG_GET_RESERVED_SIZE;
 2793                 break;
 2794         case LINUX_SG_GET_SCSI_ID:
 2795                 args->cmd = SG_GET_SCSI_ID;
 2796                 break;
 2797         case LINUX_SG_GET_SG_TABLESIZE:
 2798                 args->cmd = SG_GET_SG_TABLESIZE;
 2799                 break;
 2800         default:
 2801                 return (ENODEV);
 2802         }
 2803         return (sys_ioctl(td, (struct ioctl_args *)args));
 2804 }
 2805 
 2806 /*
 2807  * Video4Linux (V4L) ioctl handler
 2808  */
 2809 static int
 2810 linux_to_bsd_v4l_tuner(struct l_video_tuner *lvt, struct video_tuner *vt)
 2811 {
 2812         vt->tuner = lvt->tuner;
 2813         strlcpy(vt->name, lvt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
 2814         vt->rangelow = lvt->rangelow;   /* possible long size conversion */
 2815         vt->rangehigh = lvt->rangehigh; /* possible long size conversion */
 2816         vt->flags = lvt->flags;
 2817         vt->mode = lvt->mode;
 2818         vt->signal = lvt->signal;
 2819         return (0);
 2820 }
 2821 
 2822 static int
 2823 bsd_to_linux_v4l_tuner(struct video_tuner *vt, struct l_video_tuner *lvt)
 2824 {
 2825         lvt->tuner = vt->tuner;
 2826         strlcpy(lvt->name, vt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
 2827         lvt->rangelow = vt->rangelow;   /* possible long size conversion */
 2828         lvt->rangehigh = vt->rangehigh; /* possible long size conversion */
 2829         lvt->flags = vt->flags;
 2830         lvt->mode = vt->mode;
 2831         lvt->signal = vt->signal;
 2832         return (0);
 2833 }
 2834 
 2835 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2836 static int
 2837 linux_to_bsd_v4l_clip(struct l_video_clip *lvc, struct video_clip *vc)
 2838 {
 2839         vc->x = lvc->x;
 2840         vc->y = lvc->y;
 2841         vc->width = lvc->width;
 2842         vc->height = lvc->height;
 2843         vc->next = PTRIN(lvc->next);    /* possible pointer size conversion */
 2844         return (0);
 2845 }
 2846 #endif
 2847 
 2848 static int
 2849 linux_to_bsd_v4l_window(struct l_video_window *lvw, struct video_window *vw)
 2850 {
 2851         vw->x = lvw->x;
 2852         vw->y = lvw->y;
 2853         vw->width = lvw->width;
 2854         vw->height = lvw->height;
 2855         vw->chromakey = lvw->chromakey;
 2856         vw->flags = lvw->flags;
 2857         vw->clips = PTRIN(lvw->clips);  /* possible pointer size conversion */
 2858         vw->clipcount = lvw->clipcount;
 2859         return (0);
 2860 }
 2861 
 2862 static int
 2863 bsd_to_linux_v4l_window(struct video_window *vw, struct l_video_window *lvw)
 2864 {
 2865         memset(lvw, 0, sizeof(*lvw));
 2866 
 2867         lvw->x = vw->x;
 2868         lvw->y = vw->y;
 2869         lvw->width = vw->width;
 2870         lvw->height = vw->height;
 2871         lvw->chromakey = vw->chromakey;
 2872         lvw->flags = vw->flags;
 2873         lvw->clips = PTROUT(vw->clips); /* possible pointer size conversion */
 2874         lvw->clipcount = vw->clipcount;
 2875         return (0);
 2876 }
 2877 
 2878 static int
 2879 linux_to_bsd_v4l_buffer(struct l_video_buffer *lvb, struct video_buffer *vb)
 2880 {
 2881         vb->base = PTRIN(lvb->base);    /* possible pointer size conversion */
 2882         vb->height = lvb->height;
 2883         vb->width = lvb->width;
 2884         vb->depth = lvb->depth;
 2885         vb->bytesperline = lvb->bytesperline;
 2886         return (0);
 2887 }
 2888 
 2889 static int
 2890 bsd_to_linux_v4l_buffer(struct video_buffer *vb, struct l_video_buffer *lvb)
 2891 {
 2892         lvb->base = PTROUT(vb->base);   /* possible pointer size conversion */
 2893         lvb->height = vb->height;
 2894         lvb->width = vb->width;
 2895         lvb->depth = vb->depth;
 2896         lvb->bytesperline = vb->bytesperline;
 2897         return (0);
 2898 }
 2899 
 2900 static int
 2901 linux_to_bsd_v4l_code(struct l_video_code *lvc, struct video_code *vc)
 2902 {
 2903         strlcpy(vc->loadwhat, lvc->loadwhat, LINUX_VIDEO_CODE_LOADWHAT_SIZE);
 2904         vc->datasize = lvc->datasize;
 2905         vc->data = PTRIN(lvc->data);    /* possible pointer size conversion */
 2906         return (0);
 2907 }
 2908 
 2909 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2910 static int
 2911 linux_v4l_clip_copy(void *lvc, struct video_clip **ppvc)
 2912 {
 2913         int error;
 2914         struct video_clip vclip;
 2915         struct l_video_clip l_vclip;
 2916 
 2917         error = copyin(lvc, &l_vclip, sizeof(l_vclip));
 2918         if (error) return (error);
 2919         linux_to_bsd_v4l_clip(&l_vclip, &vclip);
 2920         /* XXX: If there can be no concurrency: s/M_NOWAIT/M_WAITOK/ */
 2921         if ((*ppvc = malloc(sizeof(**ppvc), M_LINUX, M_NOWAIT)) == NULL)
 2922                 return (ENOMEM);    /* XXX: Linux has no ENOMEM here. */
 2923         memcpy(*ppvc, &vclip, sizeof(vclip));
 2924         (*ppvc)->next = NULL;
 2925         return (0);
 2926 }
 2927 
 2928 static int
 2929 linux_v4l_cliplist_free(struct video_window *vw)
 2930 {
 2931         struct video_clip **ppvc;
 2932         struct video_clip **ppvc_next;
 2933 
 2934         for (ppvc = &(vw->clips); *ppvc != NULL; ppvc = ppvc_next) {
 2935                 ppvc_next = &((*ppvc)->next);
 2936                 free(*ppvc, M_LINUX);
 2937         }
 2938         vw->clips = NULL;
 2939 
 2940         return (0);
 2941 }
 2942 
 2943 static int
 2944 linux_v4l_cliplist_copy(struct l_video_window *lvw, struct video_window *vw)
 2945 {
 2946         int error;
 2947         int clipcount;
 2948         void *plvc;
 2949         struct video_clip **ppvc;
 2950 
 2951         /*
 2952          * XXX: The cliplist is used to pass in a list of clipping
 2953          *      rectangles or, if clipcount == VIDEO_CLIP_BITMAP, a
 2954          *      clipping bitmap.  Some Linux apps, however, appear to
 2955          *      leave cliplist and clips uninitialized.  In any case,
 2956          *      the cliplist is not used by pwc(4), at the time of
 2957          *      writing, FreeBSD's only V4L driver.  When a driver
 2958          *      that uses the cliplist is developed, this code may
 2959          *      need re-examiniation.
 2960          */
 2961         error = 0;
 2962         clipcount = vw->clipcount;
 2963         if (clipcount == VIDEO_CLIP_BITMAP) {
 2964                 /*
 2965                  * In this case, the pointer (clips) is overloaded
 2966                  * to be a "void *" to a bitmap, therefore there
 2967                  * is no struct video_clip to copy now.
 2968                  */
 2969         } else if (clipcount > 0 && clipcount <= 16384) {
 2970                 /*
 2971                  * Clips points to list of clip rectangles, so
 2972                  * copy the list.
 2973                  *
 2974                  * XXX: Upper limit of 16384 was used here to try to
 2975                  *      avoid cases when clipcount and clips pointer
 2976                  *      are uninitialized and therefore have high random
 2977                  *      values, as is the case in the Linux Skype
 2978                  *      application.  The value 16384 was chosen as that
 2979                  *      is what is used in the Linux stradis(4) MPEG
 2980                  *      decoder driver, the only place we found an
 2981                  *      example of cliplist use.
 2982                  */
 2983                 plvc = PTRIN(lvw->clips);
 2984                 vw->clips = NULL;
 2985                 ppvc = &(vw->clips);
 2986                 while (clipcount-- > 0) {
 2987                         if (plvc == NULL) {
 2988                                 error = EFAULT;
 2989                                 break;
 2990                         } else {
 2991                                 error = linux_v4l_clip_copy(plvc, ppvc);
 2992                                 if (error) {
 2993                                         linux_v4l_cliplist_free(vw);
 2994                                         break;
 2995                                 }
 2996                         }
 2997                         ppvc = &((*ppvc)->next);
 2998                         plvc = PTRIN(((struct l_video_clip *) plvc)->next);
 2999                 }
 3000         } else {
 3001                 /*
 3002                  * clipcount == 0 or negative (but not VIDEO_CLIP_BITMAP)
 3003                  * Force cliplist to null.
 3004                  */
 3005                 vw->clipcount = 0;
 3006                 vw->clips = NULL;
 3007         }
 3008         return (error);
 3009 }
 3010 #endif
 3011 
 3012 static int
 3013 linux_ioctl_v4l(struct thread *td, struct linux_ioctl_args *args)
 3014 {
 3015         cap_rights_t rights;
 3016         struct file *fp;
 3017         int error;
 3018         struct video_tuner vtun;
 3019         struct video_window vwin;
 3020         struct video_buffer vbuf;
 3021         struct video_code vcode;
 3022         struct l_video_tuner l_vtun;
 3023         struct l_video_window l_vwin;
 3024         struct l_video_buffer l_vbuf;
 3025         struct l_video_code l_vcode;
 3026 
 3027         switch (args->cmd & 0xffff) {
 3028         case LINUX_VIDIOCGCAP:          args->cmd = VIDIOCGCAP; break;
 3029         case LINUX_VIDIOCGCHAN:         args->cmd = VIDIOCGCHAN; break;
 3030         case LINUX_VIDIOCSCHAN:         args->cmd = VIDIOCSCHAN; break;
 3031 
 3032         case LINUX_VIDIOCGTUNER:
 3033                 error = fget(td, args->fd,
 3034                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3035                 if (error != 0)
 3036                         return (error);
 3037                 error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
 3038                 if (error) {
 3039                         fdrop(fp, td);
 3040                         return (error);
 3041                 }
 3042                 linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
 3043                 error = fo_ioctl(fp, VIDIOCGTUNER, &vtun, td->td_ucred, td);
 3044                 if (!error) {
 3045                         bsd_to_linux_v4l_tuner(&vtun, &l_vtun);
 3046                         error = copyout(&l_vtun, (void *) args->arg,
 3047                             sizeof(l_vtun));
 3048                 }
 3049                 fdrop(fp, td);
 3050                 return (error);
 3051 
 3052         case LINUX_VIDIOCSTUNER:
 3053                 error = fget(td, args->fd,
 3054                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3055                 if (error != 0)
 3056                         return (error);
 3057                 error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
 3058                 if (error) {
 3059                         fdrop(fp, td);
 3060                         return (error);
 3061                 }
 3062                 linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
 3063                 error = fo_ioctl(fp, VIDIOCSTUNER, &vtun, td->td_ucred, td);
 3064                 fdrop(fp, td);
 3065                 return (error);
 3066 
 3067         case LINUX_VIDIOCGPICT:         args->cmd = VIDIOCGPICT; break;
 3068         case LINUX_VIDIOCSPICT:         args->cmd = VIDIOCSPICT; break;
 3069         case LINUX_VIDIOCCAPTURE:       args->cmd = VIDIOCCAPTURE; break;
 3070 
 3071         case LINUX_VIDIOCGWIN:
 3072                 error = fget(td, args->fd,
 3073                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3074                 if (error != 0)
 3075                         return (error);
 3076                 error = fo_ioctl(fp, VIDIOCGWIN, &vwin, td->td_ucred, td);
 3077                 if (!error) {
 3078                         bsd_to_linux_v4l_window(&vwin, &l_vwin);
 3079                         error = copyout(&l_vwin, (void *) args->arg,
 3080                             sizeof(l_vwin));
 3081                 }
 3082                 fdrop(fp, td);
 3083                 return (error);
 3084 
 3085         case LINUX_VIDIOCSWIN:
 3086                 error = fget(td, args->fd,
 3087                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3088                 if (error != 0)
 3089                         return (error);
 3090                 error = copyin((void *) args->arg, &l_vwin, sizeof(l_vwin));
 3091                 if (error) {
 3092                         fdrop(fp, td);
 3093                         return (error);
 3094                 }
 3095                 linux_to_bsd_v4l_window(&l_vwin, &vwin);
 3096 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 3097                 error = linux_v4l_cliplist_copy(&l_vwin, &vwin);
 3098                 if (error) {
 3099                         fdrop(fp, td);
 3100                         return (error);
 3101                 }
 3102 #endif
 3103                 error = fo_ioctl(fp, VIDIOCSWIN, &vwin, td->td_ucred, td);
 3104                 fdrop(fp, td);
 3105 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 3106                 linux_v4l_cliplist_free(&vwin);
 3107 #endif
 3108                 return (error);
 3109 
 3110         case LINUX_VIDIOCGFBUF:
 3111                 error = fget(td, args->fd,
 3112                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3113                 if (error != 0)
 3114                         return (error);
 3115                 error = fo_ioctl(fp, VIDIOCGFBUF, &vbuf, td->td_ucred, td);
 3116                 if (!error) {
 3117                         bsd_to_linux_v4l_buffer(&vbuf, &l_vbuf);
 3118                         error = copyout(&l_vbuf, (void *) args->arg,
 3119                             sizeof(l_vbuf));
 3120                 }
 3121                 fdrop(fp, td);
 3122                 return (error);
 3123 
 3124         case LINUX_VIDIOCSFBUF:
 3125                 error = fget(td, args->fd,
 3126                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3127                 if (error != 0)
 3128                         return (error);
 3129                 error = copyin((void *) args->arg, &l_vbuf, sizeof(l_vbuf));
 3130                 if (error) {
 3131                         fdrop(fp, td);
 3132                         return (error);
 3133                 }
 3134                 linux_to_bsd_v4l_buffer(&l_vbuf, &vbuf);
 3135                 error = fo_ioctl(fp, VIDIOCSFBUF, &vbuf, td->td_ucred, td);
 3136                 fdrop(fp, td);
 3137                 return (error);
 3138 
 3139         case LINUX_VIDIOCKEY:           args->cmd = VIDIOCKEY; break;
 3140         case LINUX_VIDIOCGFREQ:         args->cmd = VIDIOCGFREQ; break;
 3141         case LINUX_VIDIOCSFREQ:         args->cmd = VIDIOCSFREQ; break;
 3142         case LINUX_VIDIOCGAUDIO:        args->cmd = VIDIOCGAUDIO; break;
 3143         case LINUX_VIDIOCSAUDIO:        args->cmd = VIDIOCSAUDIO; break;
 3144         case LINUX_VIDIOCSYNC:          args->cmd = VIDIOCSYNC; break;
 3145         case LINUX_VIDIOCMCAPTURE:      args->cmd = VIDIOCMCAPTURE; break;
 3146         case LINUX_VIDIOCGMBUF:         args->cmd = VIDIOCGMBUF; break;
 3147         case LINUX_VIDIOCGUNIT:         args->cmd = VIDIOCGUNIT; break;
 3148         case LINUX_VIDIOCGCAPTURE:      args->cmd = VIDIOCGCAPTURE; break;
 3149         case LINUX_VIDIOCSCAPTURE:      args->cmd = VIDIOCSCAPTURE; break;
 3150         case LINUX_VIDIOCSPLAYMODE:     args->cmd = VIDIOCSPLAYMODE; break;
 3151         case LINUX_VIDIOCSWRITEMODE:    args->cmd = VIDIOCSWRITEMODE; break;
 3152         case LINUX_VIDIOCGPLAYINFO:     args->cmd = VIDIOCGPLAYINFO; break;
 3153 
 3154         case LINUX_VIDIOCSMICROCODE:
 3155                 error = fget(td, args->fd,
 3156                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3157                 if (error != 0)
 3158                         return (error);
 3159                 error = copyin((void *) args->arg, &l_vcode, sizeof(l_vcode));
 3160                 if (error) {
 3161                         fdrop(fp, td);
 3162                         return (error);
 3163                 }
 3164                 linux_to_bsd_v4l_code(&l_vcode, &vcode);
 3165                 error = fo_ioctl(fp, VIDIOCSMICROCODE, &vcode, td->td_ucred, td);
 3166                 fdrop(fp, td);
 3167                 return (error);
 3168 
 3169         case LINUX_VIDIOCGVBIFMT:       args->cmd = VIDIOCGVBIFMT; break;
 3170         case LINUX_VIDIOCSVBIFMT:       args->cmd = VIDIOCSVBIFMT; break;
 3171         default:                        return (ENOIOCTL);
 3172         }
 3173 
 3174         error = sys_ioctl(td, (struct ioctl_args *)args);
 3175         return (error);
 3176 }
 3177 
 3178 /*
 3179  * Special ioctl handler
 3180  */
 3181 static int
 3182 linux_ioctl_special(struct thread *td, struct linux_ioctl_args *args)
 3183 {
 3184         int error;
 3185 
 3186         switch (args->cmd) {
 3187         case LINUX_SIOCGIFADDR:
 3188                 args->cmd = SIOCGIFADDR;
 3189                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3190                 break;
 3191         case LINUX_SIOCSIFADDR:
 3192                 args->cmd = SIOCSIFADDR;
 3193                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3194                 break;
 3195         case LINUX_SIOCGIFFLAGS:
 3196                 args->cmd = SIOCGIFFLAGS;
 3197                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3198                 break;
 3199         default:
 3200                 error = ENOIOCTL;
 3201         }
 3202 
 3203         return (error);
 3204 }
 3205 
 3206 static int
 3207 linux_to_bsd_v4l2_standard(struct l_v4l2_standard *lvstd, struct v4l2_standard *vstd)
 3208 {
 3209         vstd->index = lvstd->index;
 3210         vstd->id = lvstd->id;
 3211         CTASSERT(sizeof(vstd->name) == sizeof(lvstd->name));
 3212         memcpy(vstd->name, lvstd->name, sizeof(vstd->name));
 3213         vstd->frameperiod = lvstd->frameperiod;
 3214         vstd->framelines = lvstd->framelines;
 3215         CTASSERT(sizeof(vstd->reserved) == sizeof(lvstd->reserved));
 3216         memcpy(vstd->reserved, lvstd->reserved, sizeof(vstd->reserved));
 3217         return (0);
 3218 }
 3219 
 3220 static int
 3221 bsd_to_linux_v4l2_standard(struct v4l2_standard *vstd, struct l_v4l2_standard *lvstd)
 3222 {
 3223         lvstd->index = vstd->index;
 3224         lvstd->id = vstd->id;
 3225         CTASSERT(sizeof(vstd->name) == sizeof(lvstd->name));
 3226         memcpy(lvstd->name, vstd->name, sizeof(lvstd->name));
 3227         lvstd->frameperiod = vstd->frameperiod;
 3228         lvstd->framelines = vstd->framelines;
 3229         CTASSERT(sizeof(vstd->reserved) == sizeof(lvstd->reserved));
 3230         memcpy(lvstd->reserved, vstd->reserved, sizeof(lvstd->reserved));
 3231         return (0);
 3232 }
 3233 
 3234 static int
 3235 linux_to_bsd_v4l2_buffer(struct l_v4l2_buffer *lvb, struct v4l2_buffer *vb)
 3236 {
 3237         vb->index = lvb->index;
 3238         vb->type = lvb->type;
 3239         vb->bytesused = lvb->bytesused;
 3240         vb->flags = lvb->flags;
 3241         vb->field = lvb->field;
 3242         vb->timestamp.tv_sec = lvb->timestamp.tv_sec;
 3243         vb->timestamp.tv_usec = lvb->timestamp.tv_usec;
 3244         memcpy(&vb->timecode, &lvb->timecode, sizeof (lvb->timecode));
 3245         vb->sequence = lvb->sequence;
 3246         vb->memory = lvb->memory;
 3247         if (lvb->memory == V4L2_MEMORY_USERPTR)
 3248                 /* possible pointer size conversion */
 3249                 vb->m.userptr = (unsigned long)PTRIN(lvb->m.userptr);
 3250         else
 3251                 vb->m.offset = lvb->m.offset;
 3252         vb->length = lvb->length;
 3253         vb->input = lvb->input;
 3254         vb->reserved = lvb->reserved;
 3255         return (0);
 3256 }
 3257 
 3258 static int
 3259 bsd_to_linux_v4l2_buffer(struct v4l2_buffer *vb, struct l_v4l2_buffer *lvb)
 3260 {
 3261         lvb->index = vb->index;
 3262         lvb->type = vb->type;
 3263         lvb->bytesused = vb->bytesused;
 3264         lvb->flags = vb->flags;
 3265         lvb->field = vb->field;
 3266         lvb->timestamp.tv_sec = vb->timestamp.tv_sec;
 3267         lvb->timestamp.tv_usec = vb->timestamp.tv_usec;
 3268         memcpy(&lvb->timecode, &vb->timecode, sizeof (vb->timecode));
 3269         lvb->sequence = vb->sequence;
 3270         lvb->memory = vb->memory;
 3271         if (vb->memory == V4L2_MEMORY_USERPTR)
 3272                 /* possible pointer size conversion */
 3273                 lvb->m.userptr = PTROUT(vb->m.userptr);
 3274         else
 3275                 lvb->m.offset = vb->m.offset;
 3276         lvb->length = vb->length;
 3277         lvb->input = vb->input;
 3278         lvb->reserved = vb->reserved;
 3279         return (0);
 3280 }
 3281 
 3282 static int
 3283 linux_to_bsd_v4l2_format(struct l_v4l2_format *lvf, struct v4l2_format *vf)
 3284 {
 3285         vf->type = lvf->type;
 3286         if (lvf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
 3287 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3288             || lvf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3289 #endif
 3290             )
 3291                 /*
 3292                  * XXX TODO - needs 32 -> 64 bit conversion:
 3293                  * (unused by webcams?)
 3294                  */
 3295                 return (EINVAL);
 3296         memcpy(&vf->fmt, &lvf->fmt, sizeof(vf->fmt));
 3297         return (0);
 3298 }
 3299 
 3300 static int
 3301 bsd_to_linux_v4l2_format(struct v4l2_format *vf, struct l_v4l2_format *lvf)
 3302 {
 3303         lvf->type = vf->type;
 3304         if (vf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
 3305 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3306             || vf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3307 #endif
 3308             )
 3309                 /*
 3310                  * XXX TODO - needs 32 -> 64 bit conversion:
 3311                  * (unused by webcams?)
 3312                  */
 3313                 return (EINVAL);
 3314         memcpy(&lvf->fmt, &vf->fmt, sizeof(vf->fmt));
 3315         return (0);
 3316 }
 3317 static int
 3318 linux_ioctl_v4l2(struct thread *td, struct linux_ioctl_args *args)
 3319 {
 3320         cap_rights_t rights;
 3321         struct file *fp;
 3322         int error;
 3323         struct v4l2_format vformat;
 3324         struct l_v4l2_format l_vformat;
 3325         struct v4l2_standard vstd;
 3326         struct l_v4l2_standard l_vstd;
 3327         struct l_v4l2_buffer l_vbuf;
 3328         struct v4l2_buffer vbuf;
 3329         struct v4l2_input vinp;
 3330 
 3331         switch (args->cmd & 0xffff) {
 3332         case LINUX_VIDIOC_RESERVED:
 3333         case LINUX_VIDIOC_LOG_STATUS:
 3334                 if ((args->cmd & IOC_DIRMASK) != LINUX_IOC_VOID)
 3335                         return (ENOIOCTL);
 3336                 args->cmd = (args->cmd & 0xffff) | IOC_VOID;
 3337                 break;
 3338 
 3339         case LINUX_VIDIOC_OVERLAY:
 3340         case LINUX_VIDIOC_STREAMON:
 3341         case LINUX_VIDIOC_STREAMOFF:
 3342         case LINUX_VIDIOC_S_STD:
 3343         case LINUX_VIDIOC_S_TUNER:
 3344         case LINUX_VIDIOC_S_AUDIO:
 3345         case LINUX_VIDIOC_S_AUDOUT:
 3346         case LINUX_VIDIOC_S_MODULATOR:
 3347         case LINUX_VIDIOC_S_FREQUENCY:
 3348         case LINUX_VIDIOC_S_CROP:
 3349         case LINUX_VIDIOC_S_JPEGCOMP:
 3350         case LINUX_VIDIOC_S_PRIORITY:
 3351         case LINUX_VIDIOC_DBG_S_REGISTER:
 3352         case LINUX_VIDIOC_S_HW_FREQ_SEEK:
 3353         case LINUX_VIDIOC_SUBSCRIBE_EVENT:
 3354         case LINUX_VIDIOC_UNSUBSCRIBE_EVENT:
 3355                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_IN;
 3356                 break;
 3357 
 3358         case LINUX_VIDIOC_QUERYCAP:
 3359         case LINUX_VIDIOC_G_STD:
 3360         case LINUX_VIDIOC_G_AUDIO:
 3361         case LINUX_VIDIOC_G_INPUT:
 3362         case LINUX_VIDIOC_G_OUTPUT:
 3363         case LINUX_VIDIOC_G_AUDOUT:
 3364         case LINUX_VIDIOC_G_JPEGCOMP:
 3365         case LINUX_VIDIOC_QUERYSTD:
 3366         case LINUX_VIDIOC_G_PRIORITY:
 3367         case LINUX_VIDIOC_QUERY_DV_PRESET:
 3368                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_OUT;
 3369                 break;
 3370 
 3371         case LINUX_VIDIOC_ENUM_FMT:
 3372         case LINUX_VIDIOC_REQBUFS:
 3373         case LINUX_VIDIOC_G_PARM:
 3374         case LINUX_VIDIOC_S_PARM:
 3375         case LINUX_VIDIOC_G_CTRL:
 3376         case LINUX_VIDIOC_S_CTRL:
 3377         case LINUX_VIDIOC_G_TUNER:
 3378         case LINUX_VIDIOC_QUERYCTRL:
 3379         case LINUX_VIDIOC_QUERYMENU:
 3380         case LINUX_VIDIOC_S_INPUT:
 3381         case LINUX_VIDIOC_S_OUTPUT:
 3382         case LINUX_VIDIOC_ENUMOUTPUT:
 3383         case LINUX_VIDIOC_G_MODULATOR:
 3384         case LINUX_VIDIOC_G_FREQUENCY:
 3385         case LINUX_VIDIOC_CROPCAP:
 3386         case LINUX_VIDIOC_G_CROP:
 3387         case LINUX_VIDIOC_ENUMAUDIO:
 3388         case LINUX_VIDIOC_ENUMAUDOUT:
 3389         case LINUX_VIDIOC_G_SLICED_VBI_CAP:
 3390 #ifdef VIDIOC_ENUM_FRAMESIZES
 3391         case LINUX_VIDIOC_ENUM_FRAMESIZES:
 3392         case LINUX_VIDIOC_ENUM_FRAMEINTERVALS:
 3393         case LINUX_VIDIOC_ENCODER_CMD:
 3394         case LINUX_VIDIOC_TRY_ENCODER_CMD:
 3395 #endif
 3396         case LINUX_VIDIOC_DBG_G_REGISTER:
 3397         case LINUX_VIDIOC_DBG_G_CHIP_IDENT:
 3398         case LINUX_VIDIOC_ENUM_DV_PRESETS:
 3399         case LINUX_VIDIOC_S_DV_PRESET:
 3400         case LINUX_VIDIOC_G_DV_PRESET:
 3401         case LINUX_VIDIOC_S_DV_TIMINGS:
 3402         case LINUX_VIDIOC_G_DV_TIMINGS:
 3403                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
 3404                 break;
 3405 
 3406         case LINUX_VIDIOC_G_FMT:
 3407         case LINUX_VIDIOC_S_FMT:
 3408         case LINUX_VIDIOC_TRY_FMT:
 3409                 error = copyin((void *)args->arg, &l_vformat, sizeof(l_vformat));
 3410                 if (error)
 3411                         return (error);
 3412                 error = fget(td, args->fd,
 3413                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3414                 if (error)
 3415                         return (error);
 3416                 if (linux_to_bsd_v4l2_format(&l_vformat, &vformat) != 0)
 3417                         error = EINVAL;
 3418                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_G_FMT)
 3419                         error = fo_ioctl(fp, VIDIOC_G_FMT, &vformat,
 3420                             td->td_ucred, td);
 3421                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_S_FMT)
 3422                         error = fo_ioctl(fp, VIDIOC_S_FMT, &vformat,
 3423                             td->td_ucred, td);
 3424                 else
 3425                         error = fo_ioctl(fp, VIDIOC_TRY_FMT, &vformat,
 3426                             td->td_ucred, td);
 3427                 bsd_to_linux_v4l2_format(&vformat, &l_vformat);
 3428                 copyout(&l_vformat, (void *)args->arg, sizeof(l_vformat));
 3429                 fdrop(fp, td);
 3430                 return (error);
 3431 
 3432         case LINUX_VIDIOC_ENUMSTD:
 3433                 error = copyin((void *)args->arg, &l_vstd, sizeof(l_vstd));
 3434                 if (error)
 3435                         return (error);
 3436                 linux_to_bsd_v4l2_standard(&l_vstd, &vstd);
 3437                 error = fget(td, args->fd,
 3438                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3439                 if (error)
 3440                         return (error);
 3441                 error = fo_ioctl(fp, VIDIOC_ENUMSTD, (caddr_t)&vstd,
 3442                     td->td_ucred, td);
 3443                 if (error) {
 3444                         fdrop(fp, td);
 3445                         return (error);
 3446                 }
 3447                 bsd_to_linux_v4l2_standard(&vstd, &l_vstd);
 3448                 error = copyout(&l_vstd, (void *)args->arg, sizeof(l_vstd));
 3449                 fdrop(fp, td);
 3450                 return (error);
 3451 
 3452         case LINUX_VIDIOC_ENUMINPUT:
 3453                 /*
 3454                  * The Linux struct l_v4l2_input differs only in size,
 3455                  * it has no padding at the end.
 3456                  */
 3457                 error = copyin((void *)args->arg, &vinp,
 3458                                 sizeof(struct l_v4l2_input));
 3459                 if (error != 0)
 3460                         return (error);
 3461                 error = fget(td, args->fd,
 3462                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3463                 if (error != 0)
 3464                         return (error);
 3465                 error = fo_ioctl(fp, VIDIOC_ENUMINPUT, (caddr_t)&vinp,
 3466                     td->td_ucred, td);
 3467                 if (error) {
 3468                         fdrop(fp, td);
 3469                         return (error);
 3470                 }
 3471                 error = copyout(&vinp, (void *)args->arg,
 3472                                 sizeof(struct l_v4l2_input));
 3473                 fdrop(fp, td);
 3474                 return (error);
 3475 
 3476         case LINUX_VIDIOC_QUERYBUF:
 3477         case LINUX_VIDIOC_QBUF:
 3478         case LINUX_VIDIOC_DQBUF:
 3479                 error = copyin((void *)args->arg, &l_vbuf, sizeof(l_vbuf));
 3480                 if (error)
 3481                         return (error);
 3482                 error = fget(td, args->fd,
 3483                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3484                 if (error)
 3485                         return (error);
 3486                 linux_to_bsd_v4l2_buffer(&l_vbuf, &vbuf);
 3487                 if ((args->cmd & 0xffff) == LINUX_VIDIOC_QUERYBUF)
 3488                         error = fo_ioctl(fp, VIDIOC_QUERYBUF, &vbuf,
 3489                             td->td_ucred, td);
 3490                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_QBUF)
 3491                         error = fo_ioctl(fp, VIDIOC_QBUF, &vbuf,
 3492                             td->td_ucred, td);
 3493                 else
 3494                         error = fo_ioctl(fp, VIDIOC_DQBUF, &vbuf,
 3495                             td->td_ucred, td);
 3496                 bsd_to_linux_v4l2_buffer(&vbuf, &l_vbuf);
 3497                 copyout(&l_vbuf, (void *)args->arg, sizeof(l_vbuf));
 3498                 fdrop(fp, td);
 3499                 return (error);
 3500 
 3501         /*
 3502          * XXX TODO - these need 32 -> 64 bit conversion:
 3503          * (are any of them needed for webcams?)
 3504          */
 3505         case LINUX_VIDIOC_G_FBUF:
 3506         case LINUX_VIDIOC_S_FBUF:
 3507 
 3508         case LINUX_VIDIOC_G_EXT_CTRLS:
 3509         case LINUX_VIDIOC_S_EXT_CTRLS:
 3510         case LINUX_VIDIOC_TRY_EXT_CTRLS:
 3511 
 3512         case LINUX_VIDIOC_DQEVENT:
 3513 
 3514         default:                        return (ENOIOCTL);
 3515         }
 3516 
 3517         error = sys_ioctl(td, (struct ioctl_args *)args);
 3518         return (error);
 3519 }
 3520 
 3521 /*
 3522  * Support for emulators/linux-libusb. This port uses FBSD_LUSB* macros
 3523  * instead of USB* ones. This lets us to provide correct values for cmd.
 3524  * 0xffffffe0 -- 0xffffffff range seemed to be the least collision-prone.
 3525  */
 3526 static int
 3527 linux_ioctl_fbsd_usb(struct thread *td, struct linux_ioctl_args *args)
 3528 {
 3529         int error;
 3530 
 3531         error = 0;
 3532         switch (args->cmd) {
 3533         case FBSD_LUSB_DEVICEENUMERATE:
 3534                 args->cmd = USB_DEVICEENUMERATE;
 3535                 break;
 3536         case FBSD_LUSB_DEV_QUIRK_ADD:
 3537                 args->cmd = USB_DEV_QUIRK_ADD;
 3538                 break;
 3539         case FBSD_LUSB_DEV_QUIRK_GET:
 3540                 args->cmd = USB_DEV_QUIRK_GET;
 3541                 break;
 3542         case FBSD_LUSB_DEV_QUIRK_REMOVE:
 3543                 args->cmd = USB_DEV_QUIRK_REMOVE;
 3544                 break;
 3545         case FBSD_LUSB_DO_REQUEST:
 3546                 args->cmd = USB_DO_REQUEST;
 3547                 break;
 3548         case FBSD_LUSB_FS_CLEAR_STALL_SYNC:
 3549                 args->cmd = USB_FS_CLEAR_STALL_SYNC;
 3550                 break;
 3551         case FBSD_LUSB_FS_CLOSE:
 3552                 args->cmd = USB_FS_CLOSE;
 3553                 break;
 3554         case FBSD_LUSB_FS_COMPLETE:
 3555                 args->cmd = USB_FS_COMPLETE;
 3556                 break;
 3557         case FBSD_LUSB_FS_INIT:
 3558                 args->cmd = USB_FS_INIT;
 3559                 break;
 3560         case FBSD_LUSB_FS_OPEN:
 3561                 args->cmd = USB_FS_OPEN;
 3562                 break;
 3563         case FBSD_LUSB_FS_START:
 3564                 args->cmd = USB_FS_START;
 3565                 break;
 3566         case FBSD_LUSB_FS_STOP:
 3567                 args->cmd = USB_FS_STOP;
 3568                 break;
 3569         case FBSD_LUSB_FS_UNINIT:
 3570                 args->cmd = USB_FS_UNINIT;
 3571                 break;
 3572         case FBSD_LUSB_GET_CONFIG:
 3573                 args->cmd = USB_GET_CONFIG;
 3574                 break;
 3575         case FBSD_LUSB_GET_DEVICEINFO:
 3576                 args->cmd = USB_GET_DEVICEINFO;
 3577                 break;
 3578         case FBSD_LUSB_GET_DEVICE_DESC:
 3579                 args->cmd = USB_GET_DEVICE_DESC;
 3580                 break;
 3581         case FBSD_LUSB_GET_FULL_DESC:
 3582                 args->cmd = USB_GET_FULL_DESC;
 3583                 break;
 3584         case FBSD_LUSB_GET_IFACE_DRIVER:
 3585                 args->cmd = USB_GET_IFACE_DRIVER;
 3586                 break;
 3587         case FBSD_LUSB_GET_PLUGTIME:
 3588                 args->cmd = USB_GET_PLUGTIME;
 3589                 break;
 3590         case FBSD_LUSB_GET_POWER_MODE:
 3591                 args->cmd = USB_GET_POWER_MODE;
 3592                 break;
 3593         case FBSD_LUSB_GET_REPORT_DESC:
 3594                 args->cmd = USB_GET_REPORT_DESC;
 3595                 break;
 3596         case FBSD_LUSB_GET_REPORT_ID:
 3597                 args->cmd = USB_GET_REPORT_ID;
 3598                 break;
 3599         case FBSD_LUSB_GET_TEMPLATE:
 3600                 args->cmd = USB_GET_TEMPLATE;
 3601                 break;
 3602         case FBSD_LUSB_IFACE_DRIVER_ACTIVE:
 3603                 args->cmd = USB_IFACE_DRIVER_ACTIVE;
 3604                 break;
 3605         case FBSD_LUSB_IFACE_DRIVER_DETACH:
 3606                 args->cmd = USB_IFACE_DRIVER_DETACH;
 3607                 break;
 3608         case FBSD_LUSB_QUIRK_NAME_GET:
 3609                 args->cmd = USB_QUIRK_NAME_GET;
 3610                 break;
 3611         case FBSD_LUSB_READ_DIR:
 3612                 args->cmd = USB_READ_DIR;
 3613                 break;
 3614         case FBSD_LUSB_SET_ALTINTERFACE:
 3615                 args->cmd = USB_SET_ALTINTERFACE;
 3616                 break;
 3617         case FBSD_LUSB_SET_CONFIG:
 3618                 args->cmd = USB_SET_CONFIG;
 3619                 break;
 3620         case FBSD_LUSB_SET_IMMED:
 3621                 args->cmd = USB_SET_IMMED;
 3622                 break;
 3623         case FBSD_LUSB_SET_POWER_MODE:
 3624                 args->cmd = USB_SET_POWER_MODE;
 3625                 break;
 3626         case FBSD_LUSB_SET_TEMPLATE:
 3627                 args->cmd = USB_SET_TEMPLATE;
 3628                 break;
 3629         case FBSD_LUSB_FS_OPEN_STREAM:
 3630                 args->cmd = USB_FS_OPEN_STREAM;
 3631                 break;
 3632         case FBSD_LUSB_GET_DEV_PORT_PATH:
 3633                 args->cmd = USB_GET_DEV_PORT_PATH;
 3634                 break;
 3635         case FBSD_LUSB_GET_POWER_USAGE:
 3636                 args->cmd = USB_GET_POWER_USAGE;
 3637                 break;
 3638         default:
 3639                 error = ENOIOCTL;
 3640         }
 3641         if (error != ENOIOCTL)
 3642                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3643         return (error);
 3644 }
 3645 
 3646 /*
 3647  * Some evdev ioctls must be translated.
 3648  *  - EVIOCGMTSLOTS is a IOC_READ ioctl on Linux although it has input data
 3649  *    (must be IOC_INOUT on FreeBSD).
 3650  *  - On Linux, EVIOCGRAB, EVIOCREVOKE and EVIOCRMFF are defined as _IOW with
 3651  *    an int argument. You don't pass an int pointer to the ioctl(), however,
 3652  *    but just the int directly. On FreeBSD, they are defined as _IOWINT for
 3653  *    this to work.
 3654  */
 3655 static int
 3656 linux_ioctl_evdev(struct thread *td, struct linux_ioctl_args *args)
 3657 {
 3658         cap_rights_t rights;
 3659         struct file *fp;
 3660         clockid_t clock;
 3661         int error;
 3662 
 3663         args->cmd = SETDIR(args->cmd);
 3664 
 3665         switch (args->cmd) {
 3666         case (EVIOCGRAB & ~IOC_DIRMASK) | IOC_IN:
 3667                 args->cmd = EVIOCGRAB;
 3668                 break;
 3669         case (EVIOCREVOKE & ~IOC_DIRMASK) | IOC_IN:
 3670                 args->cmd = EVIOCREVOKE;
 3671                 break;
 3672         case (EVIOCRMFF & ~IOC_DIRMASK) | IOC_IN:
 3673                 args->cmd = EVIOCRMFF;
 3674                 break;
 3675         case EVIOCSCLOCKID: {
 3676                 error = copyin(PTRIN(args->arg), &clock, sizeof(clock));
 3677                 if (error != 0)
 3678                         return (error);
 3679                 if (clock & ~(LINUX_IOCTL_EVDEV_CLK))
 3680                         return (EINVAL);
 3681                 error = linux_to_native_clockid(&clock, clock);
 3682                 if (error != 0)
 3683                         return (error);
 3684 
 3685                 error = fget(td, args->fd,
 3686                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3687                 if (error != 0)
 3688                         return (error);
 3689 
 3690                 error = fo_ioctl(fp, EVIOCSCLOCKID, &clock, td->td_ucred, td);
 3691                 fdrop(fp, td);
 3692                 return (error);
 3693         }
 3694         default:
 3695                 break;
 3696         }
 3697 
 3698         if (IOCBASECMD(args->cmd) ==
 3699             ((EVIOCGMTSLOTS(0) & ~IOC_DIRMASK) | IOC_OUT))
 3700                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
 3701 
 3702         return (sys_ioctl(td, (struct ioctl_args *)args));
 3703 }
 3704 
 3705 /*
 3706  * main ioctl syscall function
 3707  */
 3708 
 3709 int
 3710 linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
 3711 {
 3712         cap_rights_t rights;
 3713         struct file *fp;
 3714         struct linux_ioctl_handler_element *he;
 3715         int error, cmd;
 3716 
 3717 #ifdef DEBUG
 3718         if (ldebug(ioctl))
 3719                 printf(ARGS(ioctl, "%d, %04lx, *"), args->fd,
 3720                     (unsigned long)args->cmd);
 3721 #endif
 3722 
 3723         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 3724         if (error != 0)
 3725                 return (error);
 3726         if ((fp->f_flag & (FREAD|FWRITE)) == 0) {
 3727                 fdrop(fp, td);
 3728                 return (EBADF);
 3729         }
 3730 
 3731         /* Iterate over the ioctl handlers */
 3732         cmd = args->cmd & 0xffff;
 3733         sx_slock(&linux_ioctl_sx);
 3734         mtx_lock(&Giant);
 3735 #ifdef COMPAT_LINUX32
 3736         TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
 3737                 if (cmd >= he->low && cmd <= he->high) {
 3738                         error = (*he->func)(td, args);
 3739                         if (error != ENOIOCTL) {
 3740                                 mtx_unlock(&Giant);
 3741                                 sx_sunlock(&linux_ioctl_sx);
 3742                                 fdrop(fp, td);
 3743                                 return (error);
 3744                         }
 3745                 }
 3746         }
 3747 #endif
 3748         TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
 3749                 if (cmd >= he->low && cmd <= he->high) {
 3750                         error = (*he->func)(td, args);
 3751                         if (error != ENOIOCTL) {
 3752                                 mtx_unlock(&Giant);
 3753                                 sx_sunlock(&linux_ioctl_sx);
 3754                                 fdrop(fp, td);
 3755                                 return (error);
 3756                         }
 3757                 }
 3758         }
 3759         mtx_unlock(&Giant);
 3760         sx_sunlock(&linux_ioctl_sx);
 3761         fdrop(fp, td);
 3762 
 3763         switch (args->cmd & 0xffff) {
 3764         case LINUX_BTRFS_IOC_CLONE:
 3765                 return (ENOTSUP);
 3766 
 3767         default:
 3768                 linux_msg(td, "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
 3769                     args->fd, (int)(args->cmd & 0xffff),
 3770                     (int)(args->cmd & 0xff00) >> 8, (int)(args->cmd & 0xff));
 3771                 break;
 3772         }
 3773 
 3774         return (EINVAL);
 3775 }
 3776 
 3777 int
 3778 linux_ioctl_register_handler(struct linux_ioctl_handler *h)
 3779 {
 3780         struct linux_ioctl_handler_element *he, *cur;
 3781 
 3782         if (h == NULL || h->func == NULL)
 3783                 return (EINVAL);
 3784 
 3785         /*
 3786          * Reuse the element if the handler is already on the list, otherwise
 3787          * create a new element.
 3788          */
 3789         sx_xlock(&linux_ioctl_sx);
 3790         TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
 3791                 if (he->func == h->func)
 3792                         break;
 3793         }
 3794         if (he == NULL) {
 3795                 he = malloc(sizeof(*he),
 3796                     M_LINUX, M_WAITOK);
 3797                 he->func = h->func;
 3798         } else
 3799                 TAILQ_REMOVE(&linux_ioctl_handlers, he, list);
 3800 
 3801         /* Initialize range information. */
 3802         he->low = h->low;
 3803         he->high = h->high;
 3804         he->span = h->high - h->low + 1;
 3805 
 3806         /* Add the element to the list, sorted on span. */
 3807         TAILQ_FOREACH(cur, &linux_ioctl_handlers, list) {
 3808                 if (cur->span > he->span) {
 3809                         TAILQ_INSERT_BEFORE(cur, he, list);
 3810                         sx_xunlock(&linux_ioctl_sx);
 3811                         return (0);
 3812                 }
 3813         }
 3814         TAILQ_INSERT_TAIL(&linux_ioctl_handlers, he, list);
 3815         sx_xunlock(&linux_ioctl_sx);
 3816 
 3817         return (0);
 3818 }
 3819 
 3820 int
 3821 linux_ioctl_unregister_handler(struct linux_ioctl_handler *h)
 3822 {
 3823         struct linux_ioctl_handler_element *he;
 3824 
 3825         if (h == NULL || h->func == NULL)
 3826                 return (EINVAL);
 3827 
 3828         sx_xlock(&linux_ioctl_sx);
 3829         TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
 3830                 if (he->func == h->func) {
 3831                         TAILQ_REMOVE(&linux_ioctl_handlers, he, list);
 3832                         sx_xunlock(&linux_ioctl_sx);
 3833                         free(he, M_LINUX);
 3834                         return (0);
 3835                 }
 3836         }
 3837         sx_xunlock(&linux_ioctl_sx);
 3838 
 3839         return (EINVAL);
 3840 }
 3841 
 3842 #ifdef COMPAT_LINUX32
 3843 int
 3844 linux32_ioctl_register_handler(struct linux_ioctl_handler *h)
 3845 {
 3846         struct linux_ioctl_handler_element *he, *cur;
 3847 
 3848         if (h == NULL || h->func == NULL)
 3849                 return (EINVAL);
 3850 
 3851         /*
 3852          * Reuse the element if the handler is already on the list, otherwise
 3853          * create a new element.
 3854          */
 3855         sx_xlock(&linux_ioctl_sx);
 3856         TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
 3857                 if (he->func == h->func)
 3858                         break;
 3859         }
 3860         if (he == NULL) {
 3861                 he = malloc(sizeof(*he), M_LINUX, M_WAITOK);
 3862                 he->func = h->func;
 3863         } else
 3864                 TAILQ_REMOVE(&linux32_ioctl_handlers, he, list);
 3865 
 3866         /* Initialize range information. */
 3867         he->low = h->low;
 3868         he->high = h->high;
 3869         he->span = h->high - h->low + 1;
 3870 
 3871         /* Add the element to the list, sorted on span. */
 3872         TAILQ_FOREACH(cur, &linux32_ioctl_handlers, list) {
 3873                 if (cur->span > he->span) {
 3874                         TAILQ_INSERT_BEFORE(cur, he, list);
 3875                         sx_xunlock(&linux_ioctl_sx);
 3876                         return (0);
 3877                 }
 3878         }
 3879         TAILQ_INSERT_TAIL(&linux32_ioctl_handlers, he, list);
 3880         sx_xunlock(&linux_ioctl_sx);
 3881 
 3882         return (0);
 3883 }
 3884 
 3885 int
 3886 linux32_ioctl_unregister_handler(struct linux_ioctl_handler *h)
 3887 {
 3888         struct linux_ioctl_handler_element *he;
 3889 
 3890         if (h == NULL || h->func == NULL)
 3891                 return (EINVAL);
 3892 
 3893         sx_xlock(&linux_ioctl_sx);
 3894         TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
 3895                 if (he->func == h->func) {
 3896                         TAILQ_REMOVE(&linux32_ioctl_handlers, he, list);
 3897                         sx_xunlock(&linux_ioctl_sx);
 3898                         free(he, M_LINUX);
 3899                         return (0);
 3900                 }
 3901         }
 3902         sx_xunlock(&linux_ioctl_sx);
 3903 
 3904         return (EINVAL);
 3905 }
 3906 #endif

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