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


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

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 1994-1995 Søren Schmidt
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include "opt_compat.h"
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD: stable/12/sys/compat/linux/linux_ioctl.c 364712 2020-08-24 17:06:34Z trasz $");
   33 
   34 #include <sys/param.h>
   35 #include <sys/systm.h>
   36 #include <sys/sysproto.h>
   37 #ifdef COMPAT_LINUX32
   38 #include <sys/abi_compat.h>
   39 #endif
   40 #include <sys/capsicum.h>
   41 #include <sys/cdio.h>
   42 #include <sys/dvdio.h>
   43 #include <sys/conf.h>
   44 #include <sys/disk.h>
   45 #include <sys/consio.h>
   46 #include <sys/ctype.h>
   47 #include <sys/fcntl.h>
   48 #include <sys/file.h>
   49 #include <sys/filedesc.h>
   50 #include <sys/filio.h>
   51 #include <sys/jail.h>
   52 #include <sys/kbio.h>
   53 #include <sys/kernel.h>
   54 #include <sys/linker_set.h>
   55 #include <sys/lock.h>
   56 #include <sys/malloc.h>
   57 #include <sys/proc.h>
   58 #include <sys/sbuf.h>
   59 #include <sys/socket.h>
   60 #include <sys/sockio.h>
   61 #include <sys/soundcard.h>
   62 #include <sys/stdint.h>
   63 #include <sys/sx.h>
   64 #include <sys/sysctl.h>
   65 #include <sys/tty.h>
   66 #include <sys/uio.h>
   67 #include <sys/types.h>
   68 #include <sys/mman.h>
   69 #include <sys/resourcevar.h>
   70 
   71 #include <net/if.h>
   72 #include <net/if_var.h>
   73 #include <net/if_dl.h>
   74 #include <net/if_types.h>
   75 
   76 #include <dev/evdev/input.h>
   77 #include <dev/usb/usb_ioctl.h>
   78 
   79 #ifdef COMPAT_LINUX32
   80 #include <machine/../linux32/linux.h>
   81 #include <machine/../linux32/linux32_proto.h>
   82 #else
   83 #include <machine/../linux/linux.h>
   84 #include <machine/../linux/linux_proto.h>
   85 #endif
   86 
   87 #include <compat/linux/linux_common.h>
   88 #include <compat/linux/linux_ioctl.h>
   89 #include <compat/linux/linux_mib.h>
   90 #include <compat/linux/linux_socket.h>
   91 #include <compat/linux/linux_timer.h>
   92 #include <compat/linux/linux_util.h>
   93 
   94 #include <contrib/v4l/videodev.h>
   95 #include <compat/linux/linux_videodev_compat.h>
   96 
   97 #include <contrib/v4l/videodev2.h>
   98 #include <compat/linux/linux_videodev2_compat.h>
   99 
  100 #include <cam/scsi/scsi_sg.h>
  101 
  102 CTASSERT(LINUX_IFNAMSIZ == IFNAMSIZ);
  103 
  104 static linux_ioctl_function_t linux_ioctl_cdrom;
  105 static linux_ioctl_function_t linux_ioctl_vfat;
  106 static linux_ioctl_function_t linux_ioctl_console;
  107 static linux_ioctl_function_t linux_ioctl_hdio;
  108 static linux_ioctl_function_t linux_ioctl_disk;
  109 static linux_ioctl_function_t linux_ioctl_socket;
  110 static linux_ioctl_function_t linux_ioctl_sound;
  111 static linux_ioctl_function_t linux_ioctl_termio;
  112 static linux_ioctl_function_t linux_ioctl_private;
  113 static linux_ioctl_function_t linux_ioctl_drm;
  114 static linux_ioctl_function_t linux_ioctl_sg;
  115 static linux_ioctl_function_t linux_ioctl_v4l;
  116 static linux_ioctl_function_t linux_ioctl_v4l2;
  117 static linux_ioctl_function_t linux_ioctl_special;
  118 static linux_ioctl_function_t linux_ioctl_fbsd_usb;
  119 static linux_ioctl_function_t linux_ioctl_evdev;
  120 
  121 static struct linux_ioctl_handler cdrom_handler =
  122 { linux_ioctl_cdrom, LINUX_IOCTL_CDROM_MIN, LINUX_IOCTL_CDROM_MAX };
  123 static struct linux_ioctl_handler vfat_handler =
  124 { linux_ioctl_vfat, LINUX_IOCTL_VFAT_MIN, LINUX_IOCTL_VFAT_MAX };
  125 static struct linux_ioctl_handler console_handler =
  126 { linux_ioctl_console, LINUX_IOCTL_CONSOLE_MIN, LINUX_IOCTL_CONSOLE_MAX };
  127 static struct linux_ioctl_handler hdio_handler =
  128 { linux_ioctl_hdio, LINUX_IOCTL_HDIO_MIN, LINUX_IOCTL_HDIO_MAX };
  129 static struct linux_ioctl_handler disk_handler =
  130 { linux_ioctl_disk, LINUX_IOCTL_DISK_MIN, LINUX_IOCTL_DISK_MAX };
  131 static struct linux_ioctl_handler socket_handler =
  132 { linux_ioctl_socket, LINUX_IOCTL_SOCKET_MIN, LINUX_IOCTL_SOCKET_MAX };
  133 static struct linux_ioctl_handler sound_handler =
  134 { linux_ioctl_sound, LINUX_IOCTL_SOUND_MIN, LINUX_IOCTL_SOUND_MAX };
  135 static struct linux_ioctl_handler termio_handler =
  136 { linux_ioctl_termio, LINUX_IOCTL_TERMIO_MIN, LINUX_IOCTL_TERMIO_MAX };
  137 static struct linux_ioctl_handler private_handler =
  138 { linux_ioctl_private, LINUX_IOCTL_PRIVATE_MIN, LINUX_IOCTL_PRIVATE_MAX };
  139 static struct linux_ioctl_handler drm_handler =
  140 { linux_ioctl_drm, LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX };
  141 static struct linux_ioctl_handler sg_handler =
  142 { linux_ioctl_sg, LINUX_IOCTL_SG_MIN, LINUX_IOCTL_SG_MAX };
  143 static struct linux_ioctl_handler video_handler =
  144 { linux_ioctl_v4l, LINUX_IOCTL_VIDEO_MIN, LINUX_IOCTL_VIDEO_MAX };
  145 static struct linux_ioctl_handler video2_handler =
  146 { linux_ioctl_v4l2, LINUX_IOCTL_VIDEO2_MIN, LINUX_IOCTL_VIDEO2_MAX };
  147 static struct linux_ioctl_handler fbsd_usb =
  148 { linux_ioctl_fbsd_usb, FBSD_LUSB_MIN, FBSD_LUSB_MAX };
  149 static struct linux_ioctl_handler evdev_handler =
  150 { linux_ioctl_evdev, LINUX_IOCTL_EVDEV_MIN, LINUX_IOCTL_EVDEV_MAX };
  151 
  152 DATA_SET(linux_ioctl_handler_set, cdrom_handler);
  153 DATA_SET(linux_ioctl_handler_set, vfat_handler);
  154 DATA_SET(linux_ioctl_handler_set, console_handler);
  155 DATA_SET(linux_ioctl_handler_set, hdio_handler);
  156 DATA_SET(linux_ioctl_handler_set, disk_handler);
  157 DATA_SET(linux_ioctl_handler_set, socket_handler);
  158 DATA_SET(linux_ioctl_handler_set, sound_handler);
  159 DATA_SET(linux_ioctl_handler_set, termio_handler);
  160 DATA_SET(linux_ioctl_handler_set, private_handler);
  161 DATA_SET(linux_ioctl_handler_set, drm_handler);
  162 DATA_SET(linux_ioctl_handler_set, sg_handler);
  163 DATA_SET(linux_ioctl_handler_set, video_handler);
  164 DATA_SET(linux_ioctl_handler_set, video2_handler);
  165 DATA_SET(linux_ioctl_handler_set, fbsd_usb);
  166 DATA_SET(linux_ioctl_handler_set, evdev_handler);
  167 
  168 #ifdef __i386__
  169 static TAILQ_HEAD(, linux_ioctl_handler_element) linux_ioctl_handlers =
  170     TAILQ_HEAD_INITIALIZER(linux_ioctl_handlers);
  171 static struct sx linux_ioctl_sx;
  172 SX_SYSINIT(linux_ioctl, &linux_ioctl_sx, "Linux ioctl handlers");
  173 #else
  174 extern TAILQ_HEAD(, linux_ioctl_handler_element) linux_ioctl_handlers;
  175 extern struct sx linux_ioctl_sx;
  176 #endif
  177 #ifdef COMPAT_LINUX32
  178 static TAILQ_HEAD(, linux_ioctl_handler_element) linux32_ioctl_handlers =
  179     TAILQ_HEAD_INITIALIZER(linux32_ioctl_handlers);
  180 #endif
  181 
  182 /*
  183  * hdio related ioctls for VMWare support
  184  */
  185 
  186 struct linux_hd_geometry {
  187         u_int8_t        heads;
  188         u_int8_t        sectors;
  189         u_int16_t       cylinders;
  190         u_int32_t       start;
  191 };
  192 
  193 struct linux_hd_big_geometry {
  194         u_int8_t        heads;
  195         u_int8_t        sectors;
  196         u_int32_t       cylinders;
  197         u_int32_t       start;
  198 };
  199 
  200 static int
  201 linux_ioctl_hdio(struct thread *td, struct linux_ioctl_args *args)
  202 {
  203         struct file *fp;
  204         int error;
  205         u_int sectorsize, fwcylinders, fwheads, fwsectors;
  206         off_t mediasize, bytespercyl;
  207 
  208         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
  209         if (error != 0)
  210                 return (error);
  211         switch (args->cmd & 0xffff) {
  212         case LINUX_HDIO_GET_GEO:
  213         case LINUX_HDIO_GET_GEO_BIG:
  214                 error = fo_ioctl(fp, DIOCGMEDIASIZE,
  215                         (caddr_t)&mediasize, td->td_ucred, td);
  216                 if (!error)
  217                         error = fo_ioctl(fp, DIOCGSECTORSIZE,
  218                                 (caddr_t)&sectorsize, td->td_ucred, td);
  219                 if (!error)
  220                         error = fo_ioctl(fp, DIOCGFWHEADS,
  221                                 (caddr_t)&fwheads, td->td_ucred, td);
  222                 if (!error)
  223                         error = fo_ioctl(fp, DIOCGFWSECTORS,
  224                                 (caddr_t)&fwsectors, td->td_ucred, td);
  225                 /*
  226                  * XXX: DIOCGFIRSTOFFSET is not yet implemented, so
  227                  * so pretend that GEOM always says 0. This is NOT VALID
  228                  * for slices or partitions, only the per-disk raw devices.
  229                  */
  230 
  231                 fdrop(fp, td);
  232                 if (error)
  233                         return (error);
  234                 /*
  235                  * 1. Calculate the number of bytes in a cylinder,
  236                  *    given the firmware's notion of heads and sectors
  237                  *    per cylinder.
  238                  * 2. Calculate the number of cylinders, given the total
  239                  *    size of the media.
  240                  * All internal calculations should have 64-bit precision.
  241                  */
  242                 bytespercyl = (off_t) sectorsize * fwheads * fwsectors;
  243                 fwcylinders = mediasize / bytespercyl;
  244 
  245                 if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO) {
  246                         struct linux_hd_geometry hdg;
  247 
  248                         hdg.cylinders = fwcylinders;
  249                         hdg.heads = fwheads;
  250                         hdg.sectors = fwsectors;
  251                         hdg.start = 0;
  252                         error = copyout(&hdg, (void *)args->arg, sizeof(hdg));
  253                 } else if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO_BIG) {
  254                         struct linux_hd_big_geometry hdbg;
  255 
  256                         memset(&hdbg, 0, sizeof(hdbg));
  257                         hdbg.cylinders = fwcylinders;
  258                         hdbg.heads = fwheads;
  259                         hdbg.sectors = fwsectors;
  260                         hdbg.start = 0;
  261                         error = copyout(&hdbg, (void *)args->arg, sizeof(hdbg));
  262                 }
  263                 return (error);
  264                 break;
  265         default:
  266                 /* XXX */
  267                 linux_msg(td,
  268                         "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
  269                         args->fd, (int)(args->cmd & 0xffff),
  270                         (int)(args->cmd & 0xff00) >> 8,
  271                         (int)(args->cmd & 0xff));
  272                 break;
  273         }
  274         fdrop(fp, td);
  275         return (ENOIOCTL);
  276 }
  277 
  278 static int
  279 linux_ioctl_disk(struct thread *td, struct linux_ioctl_args *args)
  280 {
  281         struct file *fp;
  282         int error;
  283         u_int sectorsize, psectorsize;
  284         uint64_t blksize64;
  285         off_t mediasize, stripesize;
  286 
  287         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
  288         if (error != 0)
  289                 return (error);
  290         switch (args->cmd & 0xffff) {
  291         case LINUX_BLKGETSIZE:
  292                 error = fo_ioctl(fp, DIOCGSECTORSIZE,
  293                     (caddr_t)&sectorsize, td->td_ucred, td);
  294                 if (!error)
  295                         error = fo_ioctl(fp, DIOCGMEDIASIZE,
  296                             (caddr_t)&mediasize, td->td_ucred, td);
  297                 fdrop(fp, td);
  298                 if (error)
  299                         return (error);
  300                 sectorsize = mediasize / sectorsize;
  301                 /*
  302                  * XXX: How do we know we return the right size of integer ?
  303                  */
  304                 return (copyout(&sectorsize, (void *)args->arg,
  305                     sizeof(sectorsize)));
  306                 break;
  307         case LINUX_BLKGETSIZE64:
  308                 error = fo_ioctl(fp, DIOCGMEDIASIZE,
  309                     (caddr_t)&mediasize, td->td_ucred, td);
  310                 fdrop(fp, td);
  311                 if (error)
  312                         return (error);
  313                 blksize64 = mediasize;;
  314                 return (copyout(&blksize64, (void *)args->arg,
  315                     sizeof(blksize64)));
  316         case LINUX_BLKSSZGET:
  317                 error = fo_ioctl(fp, DIOCGSECTORSIZE,
  318                     (caddr_t)&sectorsize, td->td_ucred, td);
  319                 fdrop(fp, td);
  320                 if (error)
  321                         return (error);
  322                 return (copyout(&sectorsize, (void *)args->arg,
  323                     sizeof(sectorsize)));
  324                 break;
  325         case LINUX_BLKPBSZGET:
  326                 error = fo_ioctl(fp, DIOCGSTRIPESIZE,
  327                     (caddr_t)&stripesize, td->td_ucred, td);
  328                 if (error != 0) {
  329                         fdrop(fp, td);
  330                         return (error);
  331                 }
  332                 if (stripesize > 0 && stripesize <= 4096) {
  333                         psectorsize = stripesize;
  334                 } else  {
  335                         error = fo_ioctl(fp, DIOCGSECTORSIZE,
  336                             (caddr_t)&sectorsize, td->td_ucred, td);
  337                         if (error != 0) {
  338                                 fdrop(fp, td);
  339                                 return (error);
  340                         }
  341                         psectorsize = sectorsize;
  342                 }
  343                 fdrop(fp, td);
  344                 return (copyout(&psectorsize, (void *)args->arg,
  345                     sizeof(psectorsize)));
  346         }
  347         fdrop(fp, td);
  348         return (ENOIOCTL);
  349 }
  350 
  351 /*
  352  * termio related ioctls
  353  */
  354 
  355 struct linux_termio {
  356         unsigned short c_iflag;
  357         unsigned short c_oflag;
  358         unsigned short c_cflag;
  359         unsigned short c_lflag;
  360         unsigned char c_line;
  361         unsigned char c_cc[LINUX_NCC];
  362 };
  363 
  364 struct linux_termios {
  365         unsigned int c_iflag;
  366         unsigned int c_oflag;
  367         unsigned int c_cflag;
  368         unsigned int c_lflag;
  369         unsigned char c_line;
  370         unsigned char c_cc[LINUX_NCCS];
  371 };
  372 
  373 struct linux_winsize {
  374         unsigned short ws_row, ws_col;
  375         unsigned short ws_xpixel, ws_ypixel;
  376 };
  377 
  378 struct speedtab {
  379         int sp_speed;                   /* Speed. */
  380         int sp_code;                    /* Code. */
  381 };
  382 
  383 static struct speedtab sptab[] = {
  384         { B0, LINUX_B0 }, { B50, LINUX_B50 },
  385         { B75, LINUX_B75 }, { B110, LINUX_B110 },
  386         { B134, LINUX_B134 }, { B150, LINUX_B150 },
  387         { B200, LINUX_B200 }, { B300, LINUX_B300 },
  388         { B600, LINUX_B600 }, { B1200, LINUX_B1200 },
  389         { B1800, LINUX_B1800 }, { B2400, LINUX_B2400 },
  390         { B4800, LINUX_B4800 }, { B9600, LINUX_B9600 },
  391         { B19200, LINUX_B19200 }, { B38400, LINUX_B38400 },
  392         { B57600, LINUX_B57600 }, { B115200, LINUX_B115200 },
  393         {-1, -1 }
  394 };
  395 
  396 struct linux_serial_struct {
  397         int     type;
  398         int     line;
  399         int     port;
  400         int     irq;
  401         int     flags;
  402         int     xmit_fifo_size;
  403         int     custom_divisor;
  404         int     baud_base;
  405         unsigned short close_delay;
  406         char    reserved_char[2];
  407         int     hub6;
  408         unsigned short closing_wait;
  409         unsigned short closing_wait2;
  410         int     reserved[4];
  411 };
  412 
  413 static int
  414 linux_to_bsd_speed(int code, struct speedtab *table)
  415 {
  416         for ( ; table->sp_code != -1; table++)
  417                 if (table->sp_code == code)
  418                         return (table->sp_speed);
  419         return (-1);
  420 }
  421 
  422 static int
  423 bsd_to_linux_speed(int speed, struct speedtab *table)
  424 {
  425         for ( ; table->sp_speed != -1; table++)
  426                 if (table->sp_speed == speed)
  427                         return (table->sp_code);
  428         return (-1);
  429 }
  430 
  431 static void
  432 bsd_to_linux_termios(struct termios *bios, struct linux_termios *lios)
  433 {
  434         int i;
  435 
  436         lios->c_iflag = 0;
  437         if (bios->c_iflag & IGNBRK)
  438                 lios->c_iflag |= LINUX_IGNBRK;
  439         if (bios->c_iflag & BRKINT)
  440                 lios->c_iflag |= LINUX_BRKINT;
  441         if (bios->c_iflag & IGNPAR)
  442                 lios->c_iflag |= LINUX_IGNPAR;
  443         if (bios->c_iflag & PARMRK)
  444                 lios->c_iflag |= LINUX_PARMRK;
  445         if (bios->c_iflag & INPCK)
  446                 lios->c_iflag |= LINUX_INPCK;
  447         if (bios->c_iflag & ISTRIP)
  448                 lios->c_iflag |= LINUX_ISTRIP;
  449         if (bios->c_iflag & INLCR)
  450                 lios->c_iflag |= LINUX_INLCR;
  451         if (bios->c_iflag & IGNCR)
  452                 lios->c_iflag |= LINUX_IGNCR;
  453         if (bios->c_iflag & ICRNL)
  454                 lios->c_iflag |= LINUX_ICRNL;
  455         if (bios->c_iflag & IXON)
  456                 lios->c_iflag |= LINUX_IXON;
  457         if (bios->c_iflag & IXANY)
  458                 lios->c_iflag |= LINUX_IXANY;
  459         if (bios->c_iflag & IXOFF)
  460                 lios->c_iflag |= LINUX_IXOFF;
  461         if (bios->c_iflag & IMAXBEL)
  462                 lios->c_iflag |= LINUX_IMAXBEL;
  463 
  464         lios->c_oflag = 0;
  465         if (bios->c_oflag & OPOST)
  466                 lios->c_oflag |= LINUX_OPOST;
  467         if (bios->c_oflag & ONLCR)
  468                 lios->c_oflag |= LINUX_ONLCR;
  469         if (bios->c_oflag & TAB3)
  470                 lios->c_oflag |= LINUX_XTABS;
  471 
  472         lios->c_cflag = bsd_to_linux_speed(bios->c_ispeed, sptab);
  473         lios->c_cflag |= (bios->c_cflag & CSIZE) >> 4;
  474         if (bios->c_cflag & CSTOPB)
  475                 lios->c_cflag |= LINUX_CSTOPB;
  476         if (bios->c_cflag & CREAD)
  477                 lios->c_cflag |= LINUX_CREAD;
  478         if (bios->c_cflag & PARENB)
  479                 lios->c_cflag |= LINUX_PARENB;
  480         if (bios->c_cflag & PARODD)
  481                 lios->c_cflag |= LINUX_PARODD;
  482         if (bios->c_cflag & HUPCL)
  483                 lios->c_cflag |= LINUX_HUPCL;
  484         if (bios->c_cflag & CLOCAL)
  485                 lios->c_cflag |= LINUX_CLOCAL;
  486         if (bios->c_cflag & CRTSCTS)
  487                 lios->c_cflag |= LINUX_CRTSCTS;
  488 
  489         lios->c_lflag = 0;
  490         if (bios->c_lflag & ISIG)
  491                 lios->c_lflag |= LINUX_ISIG;
  492         if (bios->c_lflag & ICANON)
  493                 lios->c_lflag |= LINUX_ICANON;
  494         if (bios->c_lflag & ECHO)
  495                 lios->c_lflag |= LINUX_ECHO;
  496         if (bios->c_lflag & ECHOE)
  497                 lios->c_lflag |= LINUX_ECHOE;
  498         if (bios->c_lflag & ECHOK)
  499                 lios->c_lflag |= LINUX_ECHOK;
  500         if (bios->c_lflag & ECHONL)
  501                 lios->c_lflag |= LINUX_ECHONL;
  502         if (bios->c_lflag & NOFLSH)
  503                 lios->c_lflag |= LINUX_NOFLSH;
  504         if (bios->c_lflag & TOSTOP)
  505                 lios->c_lflag |= LINUX_TOSTOP;
  506         if (bios->c_lflag & ECHOCTL)
  507                 lios->c_lflag |= LINUX_ECHOCTL;
  508         if (bios->c_lflag & ECHOPRT)
  509                 lios->c_lflag |= LINUX_ECHOPRT;
  510         if (bios->c_lflag & ECHOKE)
  511                 lios->c_lflag |= LINUX_ECHOKE;
  512         if (bios->c_lflag & FLUSHO)
  513                 lios->c_lflag |= LINUX_FLUSHO;
  514         if (bios->c_lflag & PENDIN)
  515                 lios->c_lflag |= LINUX_PENDIN;
  516         if (bios->c_lflag & IEXTEN)
  517                 lios->c_lflag |= LINUX_IEXTEN;
  518 
  519         for (i=0; i<LINUX_NCCS; i++)
  520                 lios->c_cc[i] = LINUX_POSIX_VDISABLE;
  521         lios->c_cc[LINUX_VINTR] = bios->c_cc[VINTR];
  522         lios->c_cc[LINUX_VQUIT] = bios->c_cc[VQUIT];
  523         lios->c_cc[LINUX_VERASE] = bios->c_cc[VERASE];
  524         lios->c_cc[LINUX_VKILL] = bios->c_cc[VKILL];
  525         lios->c_cc[LINUX_VEOF] = bios->c_cc[VEOF];
  526         lios->c_cc[LINUX_VEOL] = bios->c_cc[VEOL];
  527         lios->c_cc[LINUX_VMIN] = bios->c_cc[VMIN];
  528         lios->c_cc[LINUX_VTIME] = bios->c_cc[VTIME];
  529         lios->c_cc[LINUX_VEOL2] = bios->c_cc[VEOL2];
  530         lios->c_cc[LINUX_VSUSP] = bios->c_cc[VSUSP];
  531         lios->c_cc[LINUX_VSTART] = bios->c_cc[VSTART];
  532         lios->c_cc[LINUX_VSTOP] = bios->c_cc[VSTOP];
  533         lios->c_cc[LINUX_VREPRINT] = bios->c_cc[VREPRINT];
  534         lios->c_cc[LINUX_VDISCARD] = bios->c_cc[VDISCARD];
  535         lios->c_cc[LINUX_VWERASE] = bios->c_cc[VWERASE];
  536         lios->c_cc[LINUX_VLNEXT] = bios->c_cc[VLNEXT];
  537         if (linux_preserve_vstatus)
  538                 lios->c_cc[LINUX_VSTATUS] = bios->c_cc[VSTATUS];
  539 
  540         for (i=0; i<LINUX_NCCS; i++) {
  541                 if (i != LINUX_VMIN && i != LINUX_VTIME &&
  542                     lios->c_cc[i] == _POSIX_VDISABLE)
  543                         lios->c_cc[i] = LINUX_POSIX_VDISABLE;
  544         }
  545         lios->c_line = 0;
  546 }
  547 
  548 static void
  549 linux_to_bsd_termios(struct linux_termios *lios, struct termios *bios)
  550 {
  551         int i;
  552 
  553         bios->c_iflag = 0;
  554         if (lios->c_iflag & LINUX_IGNBRK)
  555                 bios->c_iflag |= IGNBRK;
  556         if (lios->c_iflag & LINUX_BRKINT)
  557                 bios->c_iflag |= BRKINT;
  558         if (lios->c_iflag & LINUX_IGNPAR)
  559                 bios->c_iflag |= IGNPAR;
  560         if (lios->c_iflag & LINUX_PARMRK)
  561                 bios->c_iflag |= PARMRK;
  562         if (lios->c_iflag & LINUX_INPCK)
  563                 bios->c_iflag |= INPCK;
  564         if (lios->c_iflag & LINUX_ISTRIP)
  565                 bios->c_iflag |= ISTRIP;
  566         if (lios->c_iflag & LINUX_INLCR)
  567                 bios->c_iflag |= INLCR;
  568         if (lios->c_iflag & LINUX_IGNCR)
  569                 bios->c_iflag |= IGNCR;
  570         if (lios->c_iflag & LINUX_ICRNL)
  571                 bios->c_iflag |= ICRNL;
  572         if (lios->c_iflag & LINUX_IXON)
  573                 bios->c_iflag |= IXON;
  574         if (lios->c_iflag & LINUX_IXANY)
  575                 bios->c_iflag |= IXANY;
  576         if (lios->c_iflag & LINUX_IXOFF)
  577                 bios->c_iflag |= IXOFF;
  578         if (lios->c_iflag & LINUX_IMAXBEL)
  579                 bios->c_iflag |= IMAXBEL;
  580 
  581         bios->c_oflag = 0;
  582         if (lios->c_oflag & LINUX_OPOST)
  583                 bios->c_oflag |= OPOST;
  584         if (lios->c_oflag & LINUX_ONLCR)
  585                 bios->c_oflag |= ONLCR;
  586         if (lios->c_oflag & LINUX_XTABS)
  587                 bios->c_oflag |= TAB3;
  588 
  589         bios->c_cflag = (lios->c_cflag & LINUX_CSIZE) << 4;
  590         if (lios->c_cflag & LINUX_CSTOPB)
  591                 bios->c_cflag |= CSTOPB;
  592         if (lios->c_cflag & LINUX_CREAD)
  593                 bios->c_cflag |= CREAD;
  594         if (lios->c_cflag & LINUX_PARENB)
  595                 bios->c_cflag |= PARENB;
  596         if (lios->c_cflag & LINUX_PARODD)
  597                 bios->c_cflag |= PARODD;
  598         if (lios->c_cflag & LINUX_HUPCL)
  599                 bios->c_cflag |= HUPCL;
  600         if (lios->c_cflag & LINUX_CLOCAL)
  601                 bios->c_cflag |= CLOCAL;
  602         if (lios->c_cflag & LINUX_CRTSCTS)
  603                 bios->c_cflag |= CRTSCTS;
  604 
  605         bios->c_lflag = 0;
  606         if (lios->c_lflag & LINUX_ISIG)
  607                 bios->c_lflag |= ISIG;
  608         if (lios->c_lflag & LINUX_ICANON)
  609                 bios->c_lflag |= ICANON;
  610         if (lios->c_lflag & LINUX_ECHO)
  611                 bios->c_lflag |= ECHO;
  612         if (lios->c_lflag & LINUX_ECHOE)
  613                 bios->c_lflag |= ECHOE;
  614         if (lios->c_lflag & LINUX_ECHOK)
  615                 bios->c_lflag |= ECHOK;
  616         if (lios->c_lflag & LINUX_ECHONL)
  617                 bios->c_lflag |= ECHONL;
  618         if (lios->c_lflag & LINUX_NOFLSH)
  619                 bios->c_lflag |= NOFLSH;
  620         if (lios->c_lflag & LINUX_TOSTOP)
  621                 bios->c_lflag |= TOSTOP;
  622         if (lios->c_lflag & LINUX_ECHOCTL)
  623                 bios->c_lflag |= ECHOCTL;
  624         if (lios->c_lflag & LINUX_ECHOPRT)
  625                 bios->c_lflag |= ECHOPRT;
  626         if (lios->c_lflag & LINUX_ECHOKE)
  627                 bios->c_lflag |= ECHOKE;
  628         if (lios->c_lflag & LINUX_FLUSHO)
  629                 bios->c_lflag |= FLUSHO;
  630         if (lios->c_lflag & LINUX_PENDIN)
  631                 bios->c_lflag |= PENDIN;
  632         if (lios->c_lflag & LINUX_IEXTEN)
  633                 bios->c_lflag |= IEXTEN;
  634 
  635         for (i=0; i<NCCS; i++)
  636                 bios->c_cc[i] = _POSIX_VDISABLE;
  637         bios->c_cc[VINTR] = lios->c_cc[LINUX_VINTR];
  638         bios->c_cc[VQUIT] = lios->c_cc[LINUX_VQUIT];
  639         bios->c_cc[VERASE] = lios->c_cc[LINUX_VERASE];
  640         bios->c_cc[VKILL] = lios->c_cc[LINUX_VKILL];
  641         bios->c_cc[VEOF] = lios->c_cc[LINUX_VEOF];
  642         bios->c_cc[VEOL] = lios->c_cc[LINUX_VEOL];
  643         bios->c_cc[VMIN] = lios->c_cc[LINUX_VMIN];
  644         bios->c_cc[VTIME] = lios->c_cc[LINUX_VTIME];
  645         bios->c_cc[VEOL2] = lios->c_cc[LINUX_VEOL2];
  646         bios->c_cc[VSUSP] = lios->c_cc[LINUX_VSUSP];
  647         bios->c_cc[VSTART] = lios->c_cc[LINUX_VSTART];
  648         bios->c_cc[VSTOP] = lios->c_cc[LINUX_VSTOP];
  649         bios->c_cc[VREPRINT] = lios->c_cc[LINUX_VREPRINT];
  650         bios->c_cc[VDISCARD] = lios->c_cc[LINUX_VDISCARD];
  651         bios->c_cc[VWERASE] = lios->c_cc[LINUX_VWERASE];
  652         bios->c_cc[VLNEXT] = lios->c_cc[LINUX_VLNEXT];
  653         if (linux_preserve_vstatus)
  654                 bios->c_cc[VSTATUS] = lios->c_cc[LINUX_VSTATUS];
  655 
  656         for (i=0; i<NCCS; i++) {
  657                 if (i != VMIN && i != VTIME &&
  658                     bios->c_cc[i] == LINUX_POSIX_VDISABLE)
  659                         bios->c_cc[i] = _POSIX_VDISABLE;
  660         }
  661 
  662         bios->c_ispeed = bios->c_ospeed =
  663             linux_to_bsd_speed(lios->c_cflag & LINUX_CBAUD, sptab);
  664 }
  665 
  666 static void
  667 bsd_to_linux_termio(struct termios *bios, struct linux_termio *lio)
  668 {
  669         struct linux_termios lios;
  670 
  671         memset(lio, 0, sizeof(*lio));
  672         bsd_to_linux_termios(bios, &lios);
  673         lio->c_iflag = lios.c_iflag;
  674         lio->c_oflag = lios.c_oflag;
  675         lio->c_cflag = lios.c_cflag;
  676         lio->c_lflag = lios.c_lflag;
  677         lio->c_line  = lios.c_line;
  678         memcpy(lio->c_cc, lios.c_cc, LINUX_NCC);
  679 }
  680 
  681 static void
  682 linux_to_bsd_termio(struct linux_termio *lio, struct termios *bios)
  683 {
  684         struct linux_termios lios;
  685         int i;
  686 
  687         lios.c_iflag = lio->c_iflag;
  688         lios.c_oflag = lio->c_oflag;
  689         lios.c_cflag = lio->c_cflag;
  690         lios.c_lflag = lio->c_lflag;
  691         for (i=LINUX_NCC; i<LINUX_NCCS; i++)
  692                 lios.c_cc[i] = LINUX_POSIX_VDISABLE;
  693         memcpy(lios.c_cc, lio->c_cc, LINUX_NCC);
  694         linux_to_bsd_termios(&lios, bios);
  695 }
  696 
  697 static int
  698 linux_ioctl_termio(struct thread *td, struct linux_ioctl_args *args)
  699 {
  700         struct termios bios;
  701         struct linux_termios lios;
  702         struct linux_termio lio;
  703         struct file *fp;
  704         int error;
  705 
  706         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
  707         if (error != 0)
  708                 return (error);
  709 
  710         switch (args->cmd & 0xffff) {
  711 
  712         case LINUX_TCGETS:
  713                 error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
  714                     td);
  715                 if (error)
  716                         break;
  717                 bsd_to_linux_termios(&bios, &lios);
  718                 error = copyout(&lios, (void *)args->arg, sizeof(lios));
  719                 break;
  720 
  721         case LINUX_TCSETS:
  722                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  723                 if (error)
  724                         break;
  725                 linux_to_bsd_termios(&lios, &bios);
  726                 error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
  727                     td));
  728                 break;
  729 
  730         case LINUX_TCSETSW:
  731                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  732                 if (error)
  733                         break;
  734                 linux_to_bsd_termios(&lios, &bios);
  735                 error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
  736                     td));
  737                 break;
  738 
  739         case LINUX_TCSETSF:
  740                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  741                 if (error)
  742                         break;
  743                 linux_to_bsd_termios(&lios, &bios);
  744                 error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
  745                     td));
  746                 break;
  747 
  748         case LINUX_TCGETA:
  749                 error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
  750                     td);
  751                 if (error)
  752                         break;
  753                 bsd_to_linux_termio(&bios, &lio);
  754                 error = (copyout(&lio, (void *)args->arg, sizeof(lio)));
  755                 break;
  756 
  757         case LINUX_TCSETA:
  758                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  759                 if (error)
  760                         break;
  761                 linux_to_bsd_termio(&lio, &bios);
  762                 error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
  763                     td));
  764                 break;
  765 
  766         case LINUX_TCSETAW:
  767                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  768                 if (error)
  769                         break;
  770                 linux_to_bsd_termio(&lio, &bios);
  771                 error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
  772                     td));
  773                 break;
  774 
  775         case LINUX_TCSETAF:
  776                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  777                 if (error)
  778                         break;
  779                 linux_to_bsd_termio(&lio, &bios);
  780                 error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
  781                     td));
  782                 break;
  783 
  784         /* LINUX_TCSBRK */
  785 
  786         case LINUX_TCXONC: {
  787                 switch (args->arg) {
  788                 case LINUX_TCOOFF:
  789                         args->cmd = TIOCSTOP;
  790                         break;
  791                 case LINUX_TCOON:
  792                         args->cmd = TIOCSTART;
  793                         break;
  794                 case LINUX_TCIOFF:
  795                 case LINUX_TCION: {
  796                         int c;
  797                         struct write_args wr;
  798                         error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios,
  799                             td->td_ucred, td);
  800                         if (error)
  801                                 break;
  802                         fdrop(fp, td);
  803                         c = (args->arg == LINUX_TCIOFF) ? VSTOP : VSTART;
  804                         c = bios.c_cc[c];
  805                         if (c != _POSIX_VDISABLE) {
  806                                 wr.fd = args->fd;
  807                                 wr.buf = &c;
  808                                 wr.nbyte = sizeof(c);
  809                                 return (sys_write(td, &wr));
  810                         } else
  811                                 return (0);
  812                 }
  813                 default:
  814                         fdrop(fp, td);
  815                         return (EINVAL);
  816                 }
  817                 args->arg = 0;
  818                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  819                 break;
  820         }
  821 
  822         case LINUX_TCFLSH: {
  823                 int val;
  824                 switch (args->arg) {
  825                 case LINUX_TCIFLUSH:
  826                         val = FREAD;
  827                         break;
  828                 case LINUX_TCOFLUSH:
  829                         val = FWRITE;
  830                         break;
  831                 case LINUX_TCIOFLUSH:
  832                         val = FREAD | FWRITE;
  833                         break;
  834                 default:
  835                         fdrop(fp, td);
  836                         return (EINVAL);
  837                 }
  838                 error = (fo_ioctl(fp,TIOCFLUSH,(caddr_t)&val,td->td_ucred,td));
  839                 break;
  840         }
  841 
  842         case LINUX_TIOCEXCL:
  843                 args->cmd = TIOCEXCL;
  844                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  845                 break;
  846 
  847         case LINUX_TIOCNXCL:
  848                 args->cmd = TIOCNXCL;
  849                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  850                 break;
  851 
  852         case LINUX_TIOCSCTTY:
  853                 args->cmd = TIOCSCTTY;
  854                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  855                 break;
  856 
  857         case LINUX_TIOCGPGRP:
  858                 args->cmd = TIOCGPGRP;
  859                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  860                 break;
  861 
  862         case LINUX_TIOCSPGRP:
  863                 args->cmd = TIOCSPGRP;
  864                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  865                 break;
  866 
  867         /* LINUX_TIOCOUTQ */
  868         /* LINUX_TIOCSTI */
  869 
  870         case LINUX_TIOCGWINSZ:
  871                 args->cmd = TIOCGWINSZ;
  872                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  873                 break;
  874 
  875         case LINUX_TIOCSWINSZ:
  876                 args->cmd = TIOCSWINSZ;
  877                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  878                 break;
  879 
  880         case LINUX_TIOCMGET:
  881                 args->cmd = TIOCMGET;
  882                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  883                 break;
  884 
  885         case LINUX_TIOCMBIS:
  886                 args->cmd = TIOCMBIS;
  887                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  888                 break;
  889 
  890         case LINUX_TIOCMBIC:
  891                 args->cmd = TIOCMBIC;
  892                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  893                 break;
  894 
  895         case LINUX_TIOCMSET:
  896                 args->cmd = TIOCMSET;
  897                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  898                 break;
  899 
  900         /* TIOCGSOFTCAR */
  901         /* TIOCSSOFTCAR */
  902 
  903         case LINUX_FIONREAD: /* LINUX_TIOCINQ */
  904                 args->cmd = FIONREAD;
  905                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  906                 break;
  907 
  908         /* LINUX_TIOCLINUX */
  909 
  910         case LINUX_TIOCCONS:
  911                 args->cmd = TIOCCONS;
  912                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  913                 break;
  914 
  915         case LINUX_TIOCGSERIAL: {
  916                 struct linux_serial_struct lss;
  917 
  918                 bzero(&lss, sizeof(lss));
  919                 lss.type = LINUX_PORT_16550A;
  920                 lss.flags = 0;
  921                 lss.close_delay = 0;
  922                 error = copyout(&lss, (void *)args->arg, sizeof(lss));
  923                 break;
  924         }
  925 
  926         case LINUX_TIOCSSERIAL: {
  927                 struct linux_serial_struct lss;
  928                 error = copyin((void *)args->arg, &lss, sizeof(lss));
  929                 if (error)
  930                         break;
  931                 /* XXX - It really helps to have an implementation that
  932                  * does nothing. NOT!
  933                  */
  934                 error = 0;
  935                 break;
  936         }
  937 
  938         case LINUX_TIOCPKT:
  939                 args->cmd = TIOCPKT;
  940                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  941                 break;
  942 
  943         case LINUX_FIONBIO:
  944                 args->cmd = FIONBIO;
  945                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  946                 break;
  947 
  948         case LINUX_TIOCNOTTY:
  949                 args->cmd = TIOCNOTTY;
  950                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  951                 break;
  952 
  953         case LINUX_TIOCSETD: {
  954                 int line;
  955                 switch (args->arg) {
  956                 case LINUX_N_TTY:
  957                         line = TTYDISC;
  958                         break;
  959                 case LINUX_N_SLIP:
  960                         line = SLIPDISC;
  961                         break;
  962                 case LINUX_N_PPP:
  963                         line = PPPDISC;
  964                         break;
  965                 default:
  966                         fdrop(fp, td);
  967                         return (EINVAL);
  968                 }
  969                 error = (fo_ioctl(fp, TIOCSETD, (caddr_t)&line, td->td_ucred,
  970                     td));
  971                 break;
  972         }
  973 
  974         case LINUX_TIOCGETD: {
  975                 int linux_line;
  976                 int bsd_line = TTYDISC;
  977                 error = fo_ioctl(fp, TIOCGETD, (caddr_t)&bsd_line,
  978                     td->td_ucred, td);
  979                 if (error)
  980                         break;
  981                 switch (bsd_line) {
  982                 case TTYDISC:
  983                         linux_line = LINUX_N_TTY;
  984                         break;
  985                 case SLIPDISC:
  986                         linux_line = LINUX_N_SLIP;
  987                         break;
  988                 case PPPDISC:
  989                         linux_line = LINUX_N_PPP;
  990                         break;
  991                 default:
  992                         fdrop(fp, td);
  993                         return (EINVAL);
  994                 }
  995                 error = (copyout(&linux_line, (void *)args->arg, sizeof(int)));
  996                 break;
  997         }
  998 
  999         /* LINUX_TCSBRKP */
 1000         /* LINUX_TIOCTTYGSTRUCT */
 1001 
 1002         case LINUX_FIONCLEX:
 1003                 args->cmd = FIONCLEX;
 1004                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1005                 break;
 1006 
 1007         case LINUX_FIOCLEX:
 1008                 args->cmd = FIOCLEX;
 1009                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1010                 break;
 1011 
 1012         case LINUX_FIOASYNC:
 1013                 args->cmd = FIOASYNC;
 1014                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1015                 break;
 1016 
 1017         /* LINUX_TIOCSERCONFIG */
 1018         /* LINUX_TIOCSERGWILD */
 1019         /* LINUX_TIOCSERSWILD */
 1020         /* LINUX_TIOCGLCKTRMIOS */
 1021         /* LINUX_TIOCSLCKTRMIOS */
 1022 
 1023         case LINUX_TIOCSBRK:
 1024                 args->cmd = TIOCSBRK;
 1025                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1026                 break;
 1027 
 1028         case LINUX_TIOCCBRK:
 1029                 args->cmd = TIOCCBRK;
 1030                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1031                 break;
 1032         case LINUX_TIOCGPTN: {
 1033                 int nb;
 1034 
 1035                 error = fo_ioctl(fp, TIOCGPTN, (caddr_t)&nb, td->td_ucred, td);
 1036                 if (!error)
 1037                         error = copyout(&nb, (void *)args->arg,
 1038                             sizeof(int));
 1039                 break;
 1040         }
 1041         case LINUX_TIOCSPTLCK:
 1042                 /* Our unlockpt() does nothing. */
 1043                 error = 0;
 1044                 break;
 1045         default:
 1046                 error = ENOIOCTL;
 1047                 break;
 1048         }
 1049 
 1050         fdrop(fp, td);
 1051         return (error);
 1052 }
 1053 
 1054 /*
 1055  * CDROM related ioctls
 1056  */
 1057 
 1058 struct linux_cdrom_msf
 1059 {
 1060         u_char  cdmsf_min0;
 1061         u_char  cdmsf_sec0;
 1062         u_char  cdmsf_frame0;
 1063         u_char  cdmsf_min1;
 1064         u_char  cdmsf_sec1;
 1065         u_char  cdmsf_frame1;
 1066 };
 1067 
 1068 struct linux_cdrom_tochdr
 1069 {
 1070         u_char  cdth_trk0;
 1071         u_char  cdth_trk1;
 1072 };
 1073 
 1074 union linux_cdrom_addr
 1075 {
 1076         struct {
 1077                 u_char  minute;
 1078                 u_char  second;
 1079                 u_char  frame;
 1080         } msf;
 1081         int     lba;
 1082 };
 1083 
 1084 struct linux_cdrom_tocentry
 1085 {
 1086         u_char  cdte_track;
 1087         u_char  cdte_adr:4;
 1088         u_char  cdte_ctrl:4;
 1089         u_char  cdte_format;
 1090         union linux_cdrom_addr cdte_addr;
 1091         u_char  cdte_datamode;
 1092 };
 1093 
 1094 struct linux_cdrom_subchnl
 1095 {
 1096         u_char  cdsc_format;
 1097         u_char  cdsc_audiostatus;
 1098         u_char  cdsc_adr:4;
 1099         u_char  cdsc_ctrl:4;
 1100         u_char  cdsc_trk;
 1101         u_char  cdsc_ind;
 1102         union linux_cdrom_addr cdsc_absaddr;
 1103         union linux_cdrom_addr cdsc_reladdr;
 1104 };
 1105 
 1106 struct l_cdrom_read_audio {
 1107         union linux_cdrom_addr addr;
 1108         u_char          addr_format;
 1109         l_int           nframes;
 1110         u_char          *buf;
 1111 };
 1112 
 1113 struct l_dvd_layer {
 1114         u_char          book_version:4;
 1115         u_char          book_type:4;
 1116         u_char          min_rate:4;
 1117         u_char          disc_size:4;
 1118         u_char          layer_type:4;
 1119         u_char          track_path:1;
 1120         u_char          nlayers:2;
 1121         u_char          track_density:4;
 1122         u_char          linear_density:4;
 1123         u_char          bca:1;
 1124         u_int32_t       start_sector;
 1125         u_int32_t       end_sector;
 1126         u_int32_t       end_sector_l0;
 1127 };
 1128 
 1129 struct l_dvd_physical {
 1130         u_char          type;
 1131         u_char          layer_num;
 1132         struct l_dvd_layer layer[4];
 1133 };
 1134 
 1135 struct l_dvd_copyright {
 1136         u_char          type;
 1137         u_char          layer_num;
 1138         u_char          cpst;
 1139         u_char          rmi;
 1140 };
 1141 
 1142 struct l_dvd_disckey {
 1143         u_char          type;
 1144         l_uint          agid:2;
 1145         u_char          value[2048];
 1146 };
 1147 
 1148 struct l_dvd_bca {
 1149         u_char          type;
 1150         l_int           len;
 1151         u_char          value[188];
 1152 };
 1153 
 1154 struct l_dvd_manufact {
 1155         u_char          type;
 1156         u_char          layer_num;
 1157         l_int           len;
 1158         u_char          value[2048];
 1159 };
 1160 
 1161 typedef union {
 1162         u_char                  type;
 1163         struct l_dvd_physical   physical;
 1164         struct l_dvd_copyright  copyright;
 1165         struct l_dvd_disckey    disckey;
 1166         struct l_dvd_bca        bca;
 1167         struct l_dvd_manufact   manufact;
 1168 } l_dvd_struct;
 1169 
 1170 typedef u_char l_dvd_key[5];
 1171 typedef u_char l_dvd_challenge[10];
 1172 
 1173 struct l_dvd_lu_send_agid {
 1174         u_char          type;
 1175         l_uint          agid:2;
 1176 };
 1177 
 1178 struct l_dvd_host_send_challenge {
 1179         u_char          type;
 1180         l_uint          agid:2;
 1181         l_dvd_challenge chal;
 1182 };
 1183 
 1184 struct l_dvd_send_key {
 1185         u_char          type;
 1186         l_uint          agid:2;
 1187         l_dvd_key       key;
 1188 };
 1189 
 1190 struct l_dvd_lu_send_challenge {
 1191         u_char          type;
 1192         l_uint          agid:2;
 1193         l_dvd_challenge chal;
 1194 };
 1195 
 1196 struct l_dvd_lu_send_title_key {
 1197         u_char          type;
 1198         l_uint          agid:2;
 1199         l_dvd_key       title_key;
 1200         l_int           lba;
 1201         l_uint          cpm:1;
 1202         l_uint          cp_sec:1;
 1203         l_uint          cgms:2;
 1204 };
 1205 
 1206 struct l_dvd_lu_send_asf {
 1207         u_char          type;
 1208         l_uint          agid:2;
 1209         l_uint          asf:1;
 1210 };
 1211 
 1212 struct l_dvd_host_send_rpcstate {
 1213         u_char          type;
 1214         u_char          pdrc;
 1215 };
 1216 
 1217 struct l_dvd_lu_send_rpcstate {
 1218         u_char          type:2;
 1219         u_char          vra:3;
 1220         u_char          ucca:3;
 1221         u_char          region_mask;
 1222         u_char          rpc_scheme;
 1223 };
 1224 
 1225 typedef union {
 1226         u_char                          type;
 1227         struct l_dvd_lu_send_agid       lsa;
 1228         struct l_dvd_host_send_challenge hsc;
 1229         struct l_dvd_send_key           lsk;
 1230         struct l_dvd_lu_send_challenge  lsc;
 1231         struct l_dvd_send_key           hsk;
 1232         struct l_dvd_lu_send_title_key  lstk;
 1233         struct l_dvd_lu_send_asf        lsasf;
 1234         struct l_dvd_host_send_rpcstate hrpcs;
 1235         struct l_dvd_lu_send_rpcstate   lrpcs;
 1236 } l_dvd_authinfo;
 1237 
 1238 static void
 1239 bsd_to_linux_msf_lba(u_char af, union msf_lba *bp, union linux_cdrom_addr *lp)
 1240 {
 1241         if (af == CD_LBA_FORMAT)
 1242                 lp->lba = bp->lba;
 1243         else {
 1244                 lp->msf.minute = bp->msf.minute;
 1245                 lp->msf.second = bp->msf.second;
 1246                 lp->msf.frame = bp->msf.frame;
 1247         }
 1248 }
 1249 
 1250 static void
 1251 set_linux_cdrom_addr(union linux_cdrom_addr *addr, int format, int lba)
 1252 {
 1253         if (format == LINUX_CDROM_MSF) {
 1254                 addr->msf.frame = lba % 75;
 1255                 lba /= 75;
 1256                 lba += 2;
 1257                 addr->msf.second = lba % 60;
 1258                 addr->msf.minute = lba / 60;
 1259         } else
 1260                 addr->lba = lba;
 1261 }
 1262 
 1263 static int
 1264 linux_to_bsd_dvd_struct(l_dvd_struct *lp, struct dvd_struct *bp)
 1265 {
 1266         bp->format = lp->type;
 1267         switch (bp->format) {
 1268         case DVD_STRUCT_PHYSICAL:
 1269                 if (bp->layer_num >= 4)
 1270                         return (EINVAL);
 1271                 bp->layer_num = lp->physical.layer_num;
 1272                 break;
 1273         case DVD_STRUCT_COPYRIGHT:
 1274                 bp->layer_num = lp->copyright.layer_num;
 1275                 break;
 1276         case DVD_STRUCT_DISCKEY:
 1277                 bp->agid = lp->disckey.agid;
 1278                 break;
 1279         case DVD_STRUCT_BCA:
 1280         case DVD_STRUCT_MANUFACT:
 1281                 break;
 1282         default:
 1283                 return (EINVAL);
 1284         }
 1285         return (0);
 1286 }
 1287 
 1288 static int
 1289 bsd_to_linux_dvd_struct(struct dvd_struct *bp, l_dvd_struct *lp)
 1290 {
 1291         switch (bp->format) {
 1292         case DVD_STRUCT_PHYSICAL: {
 1293                 struct dvd_layer *blp = (struct dvd_layer *)bp->data;
 1294                 struct l_dvd_layer *llp = &lp->physical.layer[bp->layer_num];
 1295                 memset(llp, 0, sizeof(*llp));
 1296                 llp->book_version = blp->book_version;
 1297                 llp->book_type = blp->book_type;
 1298                 llp->min_rate = blp->max_rate;
 1299                 llp->disc_size = blp->disc_size;
 1300                 llp->layer_type = blp->layer_type;
 1301                 llp->track_path = blp->track_path;
 1302                 llp->nlayers = blp->nlayers;
 1303                 llp->track_density = blp->track_density;
 1304                 llp->linear_density = blp->linear_density;
 1305                 llp->bca = blp->bca;
 1306                 llp->start_sector = blp->start_sector;
 1307                 llp->end_sector = blp->end_sector;
 1308                 llp->end_sector_l0 = blp->end_sector_l0;
 1309                 break;
 1310         }
 1311         case DVD_STRUCT_COPYRIGHT:
 1312                 lp->copyright.cpst = bp->cpst;
 1313                 lp->copyright.rmi = bp->rmi;
 1314                 break;
 1315         case DVD_STRUCT_DISCKEY:
 1316                 memcpy(lp->disckey.value, bp->data, sizeof(lp->disckey.value));
 1317                 break;
 1318         case DVD_STRUCT_BCA:
 1319                 lp->bca.len = bp->length;
 1320                 memcpy(lp->bca.value, bp->data, sizeof(lp->bca.value));
 1321                 break;
 1322         case DVD_STRUCT_MANUFACT:
 1323                 lp->manufact.len = bp->length;
 1324                 memcpy(lp->manufact.value, bp->data,
 1325                     sizeof(lp->manufact.value));
 1326                 /* lp->manufact.layer_num is unused in Linux (redhat 7.0). */
 1327                 break;
 1328         default:
 1329                 return (EINVAL);
 1330         }
 1331         return (0);
 1332 }
 1333 
 1334 static int
 1335 linux_to_bsd_dvd_authinfo(l_dvd_authinfo *lp, int *bcode,
 1336     struct dvd_authinfo *bp)
 1337 {
 1338         switch (lp->type) {
 1339         case LINUX_DVD_LU_SEND_AGID:
 1340                 *bcode = DVDIOCREPORTKEY;
 1341                 bp->format = DVD_REPORT_AGID;
 1342                 bp->agid = lp->lsa.agid;
 1343                 break;
 1344         case LINUX_DVD_HOST_SEND_CHALLENGE:
 1345                 *bcode = DVDIOCSENDKEY;
 1346                 bp->format = DVD_SEND_CHALLENGE;
 1347                 bp->agid = lp->hsc.agid;
 1348                 memcpy(bp->keychal, lp->hsc.chal, 10);
 1349                 break;
 1350         case LINUX_DVD_LU_SEND_KEY1:
 1351                 *bcode = DVDIOCREPORTKEY;
 1352                 bp->format = DVD_REPORT_KEY1;
 1353                 bp->agid = lp->lsk.agid;
 1354                 break;
 1355         case LINUX_DVD_LU_SEND_CHALLENGE:
 1356                 *bcode = DVDIOCREPORTKEY;
 1357                 bp->format = DVD_REPORT_CHALLENGE;
 1358                 bp->agid = lp->lsc.agid;
 1359                 break;
 1360         case LINUX_DVD_HOST_SEND_KEY2:
 1361                 *bcode = DVDIOCSENDKEY;
 1362                 bp->format = DVD_SEND_KEY2;
 1363                 bp->agid = lp->hsk.agid;
 1364                 memcpy(bp->keychal, lp->hsk.key, 5);
 1365                 break;
 1366         case LINUX_DVD_LU_SEND_TITLE_KEY:
 1367                 *bcode = DVDIOCREPORTKEY;
 1368                 bp->format = DVD_REPORT_TITLE_KEY;
 1369                 bp->agid = lp->lstk.agid;
 1370                 bp->lba = lp->lstk.lba;
 1371                 break;
 1372         case LINUX_DVD_LU_SEND_ASF:
 1373                 *bcode = DVDIOCREPORTKEY;
 1374                 bp->format = DVD_REPORT_ASF;
 1375                 bp->agid = lp->lsasf.agid;
 1376                 break;
 1377         case LINUX_DVD_INVALIDATE_AGID:
 1378                 *bcode = DVDIOCREPORTKEY;
 1379                 bp->format = DVD_INVALIDATE_AGID;
 1380                 bp->agid = lp->lsa.agid;
 1381                 break;
 1382         case LINUX_DVD_LU_SEND_RPC_STATE:
 1383                 *bcode = DVDIOCREPORTKEY;
 1384                 bp->format = DVD_REPORT_RPC;
 1385                 break;
 1386         case LINUX_DVD_HOST_SEND_RPC_STATE:
 1387                 *bcode = DVDIOCSENDKEY;
 1388                 bp->format = DVD_SEND_RPC;
 1389                 bp->region = lp->hrpcs.pdrc;
 1390                 break;
 1391         default:
 1392                 return (EINVAL);
 1393         }
 1394         return (0);
 1395 }
 1396 
 1397 static int
 1398 bsd_to_linux_dvd_authinfo(struct dvd_authinfo *bp, l_dvd_authinfo *lp)
 1399 {
 1400         switch (lp->type) {
 1401         case LINUX_DVD_LU_SEND_AGID:
 1402                 lp->lsa.agid = bp->agid;
 1403                 break;
 1404         case LINUX_DVD_HOST_SEND_CHALLENGE:
 1405                 lp->type = LINUX_DVD_LU_SEND_KEY1;
 1406                 break;
 1407         case LINUX_DVD_LU_SEND_KEY1:
 1408                 memcpy(lp->lsk.key, bp->keychal, sizeof(lp->lsk.key));
 1409                 break;
 1410         case LINUX_DVD_LU_SEND_CHALLENGE:
 1411                 memcpy(lp->lsc.chal, bp->keychal, sizeof(lp->lsc.chal));
 1412                 break;
 1413         case LINUX_DVD_HOST_SEND_KEY2:
 1414                 lp->type = LINUX_DVD_AUTH_ESTABLISHED;
 1415                 break;
 1416         case LINUX_DVD_LU_SEND_TITLE_KEY:
 1417                 memcpy(lp->lstk.title_key, bp->keychal,
 1418                     sizeof(lp->lstk.title_key));
 1419                 lp->lstk.cpm = bp->cpm;
 1420                 lp->lstk.cp_sec = bp->cp_sec;
 1421                 lp->lstk.cgms = bp->cgms;
 1422                 break;
 1423         case LINUX_DVD_LU_SEND_ASF:
 1424                 lp->lsasf.asf = bp->asf;
 1425                 break;
 1426         case LINUX_DVD_INVALIDATE_AGID:
 1427                 break;
 1428         case LINUX_DVD_LU_SEND_RPC_STATE:
 1429                 lp->lrpcs.type = bp->reg_type;
 1430                 lp->lrpcs.vra = bp->vend_rsts;
 1431                 lp->lrpcs.ucca = bp->user_rsts;
 1432                 lp->lrpcs.region_mask = bp->region;
 1433                 lp->lrpcs.rpc_scheme = bp->rpc_scheme;
 1434                 break;
 1435         case LINUX_DVD_HOST_SEND_RPC_STATE:
 1436                 break;
 1437         default:
 1438                 return (EINVAL);
 1439         }
 1440         return (0);
 1441 }
 1442 
 1443 static int
 1444 linux_ioctl_cdrom(struct thread *td, struct linux_ioctl_args *args)
 1445 {
 1446         struct file *fp;
 1447         int error;
 1448 
 1449         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 1450         if (error != 0)
 1451                 return (error);
 1452         switch (args->cmd & 0xffff) {
 1453 
 1454         case LINUX_CDROMPAUSE:
 1455                 args->cmd = CDIOCPAUSE;
 1456                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1457                 break;
 1458 
 1459         case LINUX_CDROMRESUME:
 1460                 args->cmd = CDIOCRESUME;
 1461                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1462                 break;
 1463 
 1464         case LINUX_CDROMPLAYMSF:
 1465                 args->cmd = CDIOCPLAYMSF;
 1466                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1467                 break;
 1468 
 1469         case LINUX_CDROMPLAYTRKIND:
 1470                 args->cmd = CDIOCPLAYTRACKS;
 1471                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1472                 break;
 1473 
 1474         case LINUX_CDROMREADTOCHDR: {
 1475                 struct ioc_toc_header th;
 1476                 struct linux_cdrom_tochdr lth;
 1477                 error = fo_ioctl(fp, CDIOREADTOCHEADER, (caddr_t)&th,
 1478                     td->td_ucred, td);
 1479                 if (!error) {
 1480                         lth.cdth_trk0 = th.starting_track;
 1481                         lth.cdth_trk1 = th.ending_track;
 1482                         copyout(&lth, (void *)args->arg, sizeof(lth));
 1483                 }
 1484                 break;
 1485         }
 1486 
 1487         case LINUX_CDROMREADTOCENTRY: {
 1488                 struct linux_cdrom_tocentry lte;
 1489                 struct ioc_read_toc_single_entry irtse;
 1490 
 1491                 error = copyin((void *)args->arg, &lte, sizeof(lte));
 1492                 if (error)
 1493                         break;
 1494                 irtse.address_format = lte.cdte_format;
 1495                 irtse.track = lte.cdte_track;
 1496                 error = fo_ioctl(fp, CDIOREADTOCENTRY, (caddr_t)&irtse,
 1497                     td->td_ucred, td);
 1498                 if (!error) {
 1499                         lte.cdte_ctrl = irtse.entry.control;
 1500                         lte.cdte_adr = irtse.entry.addr_type;
 1501                         bsd_to_linux_msf_lba(irtse.address_format,
 1502                             &irtse.entry.addr, &lte.cdte_addr);
 1503                         error = copyout(&lte, (void *)args->arg, sizeof(lte));
 1504                 }
 1505                 break;
 1506         }
 1507 
 1508         case LINUX_CDROMSTOP:
 1509                 args->cmd = CDIOCSTOP;
 1510                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1511                 break;
 1512 
 1513         case LINUX_CDROMSTART:
 1514                 args->cmd = CDIOCSTART;
 1515                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1516                 break;
 1517 
 1518         case LINUX_CDROMEJECT:
 1519                 args->cmd = CDIOCEJECT;
 1520                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1521                 break;
 1522 
 1523         /* LINUX_CDROMVOLCTRL */
 1524 
 1525         case LINUX_CDROMSUBCHNL: {
 1526                 struct linux_cdrom_subchnl sc;
 1527                 struct ioc_read_subchannel bsdsc;
 1528                 struct cd_sub_channel_info bsdinfo;
 1529 
 1530                 error = copyin((void *)args->arg, &sc, sizeof(sc));
 1531                 if (error)
 1532                         break;
 1533 
 1534                 /*
 1535                  * Invoke the native ioctl and bounce the returned data through
 1536                  * the userspace buffer.  This works because the Linux structure
 1537                  * is the same size as our structures for the subchannel header
 1538                  * and position data.
 1539                  */
 1540                 bsdsc.address_format = CD_LBA_FORMAT;
 1541                 bsdsc.data_format = CD_CURRENT_POSITION;
 1542                 bsdsc.track = 0;
 1543                 bsdsc.data_len = sizeof(sc);
 1544                 bsdsc.data = (void *)args->arg;
 1545                 error = fo_ioctl(fp, CDIOCREADSUBCHANNEL, (caddr_t)&bsdsc,
 1546                     td->td_ucred, td);
 1547                 if (error)
 1548                         break;
 1549                 error = copyin((void *)args->arg, &bsdinfo, sizeof(bsdinfo));
 1550                 if (error)
 1551                         break;
 1552                 sc.cdsc_audiostatus = bsdinfo.header.audio_status;
 1553                 sc.cdsc_adr = bsdinfo.what.position.addr_type;
 1554                 sc.cdsc_ctrl = bsdinfo.what.position.control;
 1555                 sc.cdsc_trk = bsdinfo.what.position.track_number;
 1556                 sc.cdsc_ind = bsdinfo.what.position.index_number;
 1557                 set_linux_cdrom_addr(&sc.cdsc_absaddr, sc.cdsc_format,
 1558                     bsdinfo.what.position.absaddr.lba);
 1559                 set_linux_cdrom_addr(&sc.cdsc_reladdr, sc.cdsc_format,
 1560                     bsdinfo.what.position.reladdr.lba);
 1561                 error = copyout(&sc, (void *)args->arg, sizeof(sc));
 1562                 break;
 1563         }
 1564 
 1565         /* LINUX_CDROMREADMODE2 */
 1566         /* LINUX_CDROMREADMODE1 */
 1567         /* LINUX_CDROMREADAUDIO */
 1568         /* LINUX_CDROMEJECT_SW */
 1569         /* LINUX_CDROMMULTISESSION */
 1570         /* LINUX_CDROM_GET_UPC */
 1571 
 1572         case LINUX_CDROMRESET:
 1573                 args->cmd = CDIOCRESET;
 1574                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1575                 break;
 1576 
 1577         /* LINUX_CDROMVOLREAD */
 1578         /* LINUX_CDROMREADRAW */
 1579         /* LINUX_CDROMREADCOOKED */
 1580         /* LINUX_CDROMSEEK */
 1581         /* LINUX_CDROMPLAYBLK */
 1582         /* LINUX_CDROMREADALL */
 1583         /* LINUX_CDROMCLOSETRAY */
 1584         /* LINUX_CDROMLOADFROMSLOT */
 1585         /* LINUX_CDROMGETSPINDOWN */
 1586         /* LINUX_CDROMSETSPINDOWN */
 1587         /* LINUX_CDROM_SET_OPTIONS */
 1588         /* LINUX_CDROM_CLEAR_OPTIONS */
 1589         /* LINUX_CDROM_SELECT_SPEED */
 1590         /* LINUX_CDROM_SELECT_DISC */
 1591         /* LINUX_CDROM_MEDIA_CHANGED */
 1592         /* LINUX_CDROM_DRIVE_STATUS */
 1593         /* LINUX_CDROM_DISC_STATUS */
 1594         /* LINUX_CDROM_CHANGER_NSLOTS */
 1595         /* LINUX_CDROM_LOCKDOOR */
 1596         /* LINUX_CDROM_DEBUG */
 1597         /* LINUX_CDROM_GET_CAPABILITY */
 1598         /* LINUX_CDROMAUDIOBUFSIZ */
 1599 
 1600         case LINUX_DVD_READ_STRUCT: {
 1601                 l_dvd_struct *lds;
 1602                 struct dvd_struct *bds;
 1603 
 1604                 lds = malloc(sizeof(*lds), M_LINUX, M_WAITOK);
 1605                 bds = malloc(sizeof(*bds), M_LINUX, M_WAITOK);
 1606                 error = copyin((void *)args->arg, lds, sizeof(*lds));
 1607                 if (error)
 1608                         goto out;
 1609                 error = linux_to_bsd_dvd_struct(lds, bds);
 1610                 if (error)
 1611                         goto out;
 1612                 error = fo_ioctl(fp, DVDIOCREADSTRUCTURE, (caddr_t)bds,
 1613                     td->td_ucred, td);
 1614                 if (error)
 1615                         goto out;
 1616                 error = bsd_to_linux_dvd_struct(bds, lds);
 1617                 if (error)
 1618                         goto out;
 1619                 error = copyout(lds, (void *)args->arg, sizeof(*lds));
 1620         out:
 1621                 free(bds, M_LINUX);
 1622                 free(lds, M_LINUX);
 1623                 break;
 1624         }
 1625 
 1626         /* LINUX_DVD_WRITE_STRUCT */
 1627 
 1628         case LINUX_DVD_AUTH: {
 1629                 l_dvd_authinfo lda;
 1630                 struct dvd_authinfo bda;
 1631                 int bcode;
 1632 
 1633                 error = copyin((void *)args->arg, &lda, sizeof(lda));
 1634                 if (error)
 1635                         break;
 1636                 error = linux_to_bsd_dvd_authinfo(&lda, &bcode, &bda);
 1637                 if (error)
 1638                         break;
 1639                 error = fo_ioctl(fp, bcode, (caddr_t)&bda, td->td_ucred,
 1640                     td);
 1641                 if (error) {
 1642                         if (lda.type == LINUX_DVD_HOST_SEND_KEY2) {
 1643                                 lda.type = LINUX_DVD_AUTH_FAILURE;
 1644                                 copyout(&lda, (void *)args->arg, sizeof(lda));
 1645                         }
 1646                         break;
 1647                 }
 1648                 error = bsd_to_linux_dvd_authinfo(&bda, &lda);
 1649                 if (error)
 1650                         break;
 1651                 error = copyout(&lda, (void *)args->arg, sizeof(lda));
 1652                 break;
 1653         }
 1654 
 1655         case LINUX_SCSI_GET_BUS_NUMBER:
 1656         {
 1657                 struct sg_scsi_id id;
 1658 
 1659                 error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
 1660                     td->td_ucred, td);
 1661                 if (error)
 1662                         break;
 1663                 error = copyout(&id.channel, (void *)args->arg, sizeof(int));
 1664                 break;
 1665         }
 1666 
 1667         case LINUX_SCSI_GET_IDLUN:
 1668         {
 1669                 struct sg_scsi_id id;
 1670                 struct scsi_idlun idl;
 1671 
 1672                 error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
 1673                     td->td_ucred, td);
 1674                 if (error)
 1675                         break;
 1676                 idl.dev_id = (id.scsi_id & 0xff) + ((id.lun & 0xff) << 8) +
 1677                     ((id.channel & 0xff) << 16) + ((id.host_no & 0xff) << 24);
 1678                 idl.host_unique_id = id.host_no;
 1679                 error = copyout(&idl, (void *)args->arg, sizeof(idl));
 1680                 break;
 1681         }
 1682 
 1683         /* LINUX_CDROM_SEND_PACKET */
 1684         /* LINUX_CDROM_NEXT_WRITABLE */
 1685         /* LINUX_CDROM_LAST_WRITTEN */
 1686 
 1687         default:
 1688                 error = ENOIOCTL;
 1689                 break;
 1690         }
 1691 
 1692         fdrop(fp, td);
 1693         return (error);
 1694 }
 1695 
 1696 static int
 1697 linux_ioctl_vfat(struct thread *td, struct linux_ioctl_args *args)
 1698 {
 1699 
 1700         return (ENOTTY);
 1701 }
 1702 
 1703 /*
 1704  * Sound related ioctls
 1705  */
 1706 
 1707 struct linux_old_mixer_info {
 1708         char    id[16];
 1709         char    name[32];
 1710 };
 1711 
 1712 static u_int32_t dirbits[4] = { IOC_VOID, IOC_IN, IOC_OUT, IOC_INOUT };
 1713 
 1714 #define SETDIR(c)       (((c) & ~IOC_DIRMASK) | dirbits[args->cmd >> 30])
 1715 
 1716 static int
 1717 linux_ioctl_sound(struct thread *td, struct linux_ioctl_args *args)
 1718 {
 1719 
 1720         switch (args->cmd & 0xffff) {
 1721 
 1722         case LINUX_SOUND_MIXER_WRITE_VOLUME:
 1723                 args->cmd = SETDIR(SOUND_MIXER_WRITE_VOLUME);
 1724                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1725 
 1726         case LINUX_SOUND_MIXER_WRITE_BASS:
 1727                 args->cmd = SETDIR(SOUND_MIXER_WRITE_BASS);
 1728                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1729 
 1730         case LINUX_SOUND_MIXER_WRITE_TREBLE:
 1731                 args->cmd = SETDIR(SOUND_MIXER_WRITE_TREBLE);
 1732                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1733 
 1734         case LINUX_SOUND_MIXER_WRITE_SYNTH:
 1735                 args->cmd = SETDIR(SOUND_MIXER_WRITE_SYNTH);
 1736                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1737 
 1738         case LINUX_SOUND_MIXER_WRITE_PCM:
 1739                 args->cmd = SETDIR(SOUND_MIXER_WRITE_PCM);
 1740                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1741 
 1742         case LINUX_SOUND_MIXER_WRITE_SPEAKER:
 1743                 args->cmd = SETDIR(SOUND_MIXER_WRITE_SPEAKER);
 1744                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1745 
 1746         case LINUX_SOUND_MIXER_WRITE_LINE:
 1747                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE);
 1748                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1749 
 1750         case LINUX_SOUND_MIXER_WRITE_MIC:
 1751                 args->cmd = SETDIR(SOUND_MIXER_WRITE_MIC);
 1752                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1753 
 1754         case LINUX_SOUND_MIXER_WRITE_CD:
 1755                 args->cmd = SETDIR(SOUND_MIXER_WRITE_CD);
 1756                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1757 
 1758         case LINUX_SOUND_MIXER_WRITE_IMIX:
 1759                 args->cmd = SETDIR(SOUND_MIXER_WRITE_IMIX);
 1760                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1761 
 1762         case LINUX_SOUND_MIXER_WRITE_ALTPCM:
 1763                 args->cmd = SETDIR(SOUND_MIXER_WRITE_ALTPCM);
 1764                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1765 
 1766         case LINUX_SOUND_MIXER_WRITE_RECLEV:
 1767                 args->cmd = SETDIR(SOUND_MIXER_WRITE_RECLEV);
 1768                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1769 
 1770         case LINUX_SOUND_MIXER_WRITE_IGAIN:
 1771                 args->cmd = SETDIR(SOUND_MIXER_WRITE_IGAIN);
 1772                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1773 
 1774         case LINUX_SOUND_MIXER_WRITE_OGAIN:
 1775                 args->cmd = SETDIR(SOUND_MIXER_WRITE_OGAIN);
 1776                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1777 
 1778         case LINUX_SOUND_MIXER_WRITE_LINE1:
 1779                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE1);
 1780                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1781 
 1782         case LINUX_SOUND_MIXER_WRITE_LINE2:
 1783                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE2);
 1784                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1785 
 1786         case LINUX_SOUND_MIXER_WRITE_LINE3:
 1787                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE3);
 1788                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1789 
 1790         case LINUX_SOUND_MIXER_INFO: {
 1791                 /* Key on encoded length */
 1792                 switch ((args->cmd >> 16) & 0x1fff) {
 1793                 case 0x005c: {  /* SOUND_MIXER_INFO */
 1794                         args->cmd = SOUND_MIXER_INFO;
 1795                         return (sys_ioctl(td, (struct ioctl_args *)args));
 1796                 }
 1797                 case 0x0030: {  /* SOUND_OLD_MIXER_INFO */
 1798                         struct linux_old_mixer_info info;
 1799                         bzero(&info, sizeof(info));
 1800                         strncpy(info.id, "OSS", sizeof(info.id) - 1);
 1801                         strncpy(info.name, "FreeBSD OSS Mixer", sizeof(info.name) - 1);
 1802                         copyout(&info, (void *)args->arg, sizeof(info));
 1803                         return (0);
 1804                 }
 1805                 default:
 1806                         return (ENOIOCTL);
 1807                 }
 1808                 break;
 1809         }
 1810 
 1811         case LINUX_OSS_GETVERSION: {
 1812                 int version = linux_get_oss_version(td);
 1813                 return (copyout(&version, (void *)args->arg, sizeof(int)));
 1814         }
 1815 
 1816         case LINUX_SOUND_MIXER_READ_STEREODEVS:
 1817                 args->cmd = SOUND_MIXER_READ_STEREODEVS;
 1818                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1819 
 1820         case LINUX_SOUND_MIXER_READ_CAPS:
 1821                 args->cmd = SOUND_MIXER_READ_CAPS;
 1822                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1823 
 1824         case LINUX_SOUND_MIXER_READ_RECMASK:
 1825                 args->cmd = SOUND_MIXER_READ_RECMASK;
 1826                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1827 
 1828         case LINUX_SOUND_MIXER_READ_DEVMASK:
 1829                 args->cmd = SOUND_MIXER_READ_DEVMASK;
 1830                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1831 
 1832         case LINUX_SOUND_MIXER_WRITE_RECSRC:
 1833                 args->cmd = SETDIR(SOUND_MIXER_WRITE_RECSRC);
 1834                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1835 
 1836         case LINUX_SNDCTL_DSP_RESET:
 1837                 args->cmd = SNDCTL_DSP_RESET;
 1838                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1839 
 1840         case LINUX_SNDCTL_DSP_SYNC:
 1841                 args->cmd = SNDCTL_DSP_SYNC;
 1842                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1843 
 1844         case LINUX_SNDCTL_DSP_SPEED:
 1845                 args->cmd = SNDCTL_DSP_SPEED;
 1846                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1847 
 1848         case LINUX_SNDCTL_DSP_STEREO:
 1849                 args->cmd = SNDCTL_DSP_STEREO;
 1850                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1851 
 1852         case LINUX_SNDCTL_DSP_GETBLKSIZE: /* LINUX_SNDCTL_DSP_SETBLKSIZE */
 1853                 args->cmd = SNDCTL_DSP_GETBLKSIZE;
 1854                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1855 
 1856         case LINUX_SNDCTL_DSP_SETFMT:
 1857                 args->cmd = SNDCTL_DSP_SETFMT;
 1858                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1859 
 1860         case LINUX_SOUND_PCM_WRITE_CHANNELS:
 1861                 args->cmd = SOUND_PCM_WRITE_CHANNELS;
 1862                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1863 
 1864         case LINUX_SOUND_PCM_WRITE_FILTER:
 1865                 args->cmd = SOUND_PCM_WRITE_FILTER;
 1866                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1867 
 1868         case LINUX_SNDCTL_DSP_POST:
 1869                 args->cmd = SNDCTL_DSP_POST;
 1870                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1871 
 1872         case LINUX_SNDCTL_DSP_SUBDIVIDE:
 1873                 args->cmd = SNDCTL_DSP_SUBDIVIDE;
 1874                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1875 
 1876         case LINUX_SNDCTL_DSP_SETFRAGMENT:
 1877                 args->cmd = SNDCTL_DSP_SETFRAGMENT;
 1878                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1879 
 1880         case LINUX_SNDCTL_DSP_GETFMTS:
 1881                 args->cmd = SNDCTL_DSP_GETFMTS;
 1882                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1883 
 1884         case LINUX_SNDCTL_DSP_GETOSPACE:
 1885                 args->cmd = SNDCTL_DSP_GETOSPACE;
 1886                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1887 
 1888         case LINUX_SNDCTL_DSP_GETISPACE:
 1889                 args->cmd = SNDCTL_DSP_GETISPACE;
 1890                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1891 
 1892         case LINUX_SNDCTL_DSP_NONBLOCK:
 1893                 args->cmd = SNDCTL_DSP_NONBLOCK;
 1894                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1895 
 1896         case LINUX_SNDCTL_DSP_GETCAPS:
 1897                 args->cmd = SNDCTL_DSP_GETCAPS;
 1898                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1899 
 1900         case LINUX_SNDCTL_DSP_SETTRIGGER: /* LINUX_SNDCTL_GETTRIGGER */
 1901                 args->cmd = SNDCTL_DSP_SETTRIGGER;
 1902                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1903 
 1904         case LINUX_SNDCTL_DSP_GETIPTR:
 1905                 args->cmd = SNDCTL_DSP_GETIPTR;
 1906                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1907 
 1908         case LINUX_SNDCTL_DSP_GETOPTR:
 1909                 args->cmd = SNDCTL_DSP_GETOPTR;
 1910                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1911 
 1912         case LINUX_SNDCTL_DSP_SETDUPLEX:
 1913                 args->cmd = SNDCTL_DSP_SETDUPLEX;
 1914                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1915 
 1916         case LINUX_SNDCTL_DSP_GETODELAY:
 1917                 args->cmd = SNDCTL_DSP_GETODELAY;
 1918                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1919 
 1920         case LINUX_SNDCTL_SEQ_RESET:
 1921                 args->cmd = SNDCTL_SEQ_RESET;
 1922                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1923 
 1924         case LINUX_SNDCTL_SEQ_SYNC:
 1925                 args->cmd = SNDCTL_SEQ_SYNC;
 1926                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1927 
 1928         case LINUX_SNDCTL_SYNTH_INFO:
 1929                 args->cmd = SNDCTL_SYNTH_INFO;
 1930                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1931 
 1932         case LINUX_SNDCTL_SEQ_CTRLRATE:
 1933                 args->cmd = SNDCTL_SEQ_CTRLRATE;
 1934                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1935 
 1936         case LINUX_SNDCTL_SEQ_GETOUTCOUNT:
 1937                 args->cmd = SNDCTL_SEQ_GETOUTCOUNT;
 1938                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1939 
 1940         case LINUX_SNDCTL_SEQ_GETINCOUNT:
 1941                 args->cmd = SNDCTL_SEQ_GETINCOUNT;
 1942                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1943 
 1944         case LINUX_SNDCTL_SEQ_PERCMODE:
 1945                 args->cmd = SNDCTL_SEQ_PERCMODE;
 1946                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1947 
 1948         case LINUX_SNDCTL_FM_LOAD_INSTR:
 1949                 args->cmd = SNDCTL_FM_LOAD_INSTR;
 1950                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1951 
 1952         case LINUX_SNDCTL_SEQ_TESTMIDI:
 1953                 args->cmd = SNDCTL_SEQ_TESTMIDI;
 1954                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1955 
 1956         case LINUX_SNDCTL_SEQ_RESETSAMPLES:
 1957                 args->cmd = SNDCTL_SEQ_RESETSAMPLES;
 1958                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1959 
 1960         case LINUX_SNDCTL_SEQ_NRSYNTHS:
 1961                 args->cmd = SNDCTL_SEQ_NRSYNTHS;
 1962                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1963 
 1964         case LINUX_SNDCTL_SEQ_NRMIDIS:
 1965                 args->cmd = SNDCTL_SEQ_NRMIDIS;
 1966                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1967 
 1968         case LINUX_SNDCTL_MIDI_INFO:
 1969                 args->cmd = SNDCTL_MIDI_INFO;
 1970                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1971 
 1972         case LINUX_SNDCTL_SEQ_TRESHOLD:
 1973                 args->cmd = SNDCTL_SEQ_TRESHOLD;
 1974                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1975 
 1976         case LINUX_SNDCTL_SYNTH_MEMAVL:
 1977                 args->cmd = SNDCTL_SYNTH_MEMAVL;
 1978                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1979 
 1980         }
 1981 
 1982         return (ENOIOCTL);
 1983 }
 1984 
 1985 /*
 1986  * Console related ioctls
 1987  */
 1988 
 1989 static int
 1990 linux_ioctl_console(struct thread *td, struct linux_ioctl_args *args)
 1991 {
 1992         struct file *fp;
 1993         int error;
 1994 
 1995         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 1996         if (error != 0)
 1997                 return (error);
 1998         switch (args->cmd & 0xffff) {
 1999 
 2000         case LINUX_KIOCSOUND:
 2001                 args->cmd = KIOCSOUND;
 2002                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2003                 break;
 2004 
 2005         case LINUX_KDMKTONE:
 2006                 args->cmd = KDMKTONE;
 2007                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2008                 break;
 2009 
 2010         case LINUX_KDGETLED:
 2011                 args->cmd = KDGETLED;
 2012                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2013                 break;
 2014 
 2015         case LINUX_KDSETLED:
 2016                 args->cmd = KDSETLED;
 2017                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2018                 break;
 2019 
 2020         case LINUX_KDSETMODE:
 2021                 args->cmd = KDSETMODE;
 2022                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2023                 break;
 2024 
 2025         case LINUX_KDGETMODE:
 2026                 args->cmd = KDGETMODE;
 2027                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2028                 break;
 2029 
 2030         case LINUX_KDGKBMODE:
 2031                 args->cmd = KDGKBMODE;
 2032                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2033                 break;
 2034 
 2035         case LINUX_KDSKBMODE: {
 2036                 int kbdmode;
 2037                 switch (args->arg) {
 2038                 case LINUX_KBD_RAW:
 2039                         kbdmode = K_RAW;
 2040                         break;
 2041                 case LINUX_KBD_XLATE:
 2042                         kbdmode = K_XLATE;
 2043                         break;
 2044                 case LINUX_KBD_MEDIUMRAW:
 2045                         kbdmode = K_RAW;
 2046                         break;
 2047                 default:
 2048                         fdrop(fp, td);
 2049                         return (EINVAL);
 2050                 }
 2051                 error = (fo_ioctl(fp, KDSKBMODE, (caddr_t)&kbdmode,
 2052                     td->td_ucred, td));
 2053                 break;
 2054         }
 2055 
 2056         case LINUX_VT_OPENQRY:
 2057                 args->cmd = VT_OPENQRY;
 2058                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2059                 break;
 2060 
 2061         case LINUX_VT_GETMODE:
 2062                 args->cmd = VT_GETMODE;
 2063                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2064                 break;
 2065 
 2066         case LINUX_VT_SETMODE: {
 2067                 struct vt_mode mode;
 2068                 if ((error = copyin((void *)args->arg, &mode, sizeof(mode))))
 2069                         break;
 2070                 if (LINUX_SIG_VALID(mode.relsig))
 2071                         mode.relsig = linux_to_bsd_signal(mode.relsig);
 2072                 else
 2073                         mode.relsig = 0;
 2074                 if (LINUX_SIG_VALID(mode.acqsig))
 2075                         mode.acqsig = linux_to_bsd_signal(mode.acqsig);
 2076                 else
 2077                         mode.acqsig = 0;
 2078                 /* XXX. Linux ignores frsig and set it to 0. */
 2079                 mode.frsig = 0;
 2080                 if ((error = copyout(&mode, (void *)args->arg, sizeof(mode))))
 2081                         break;
 2082                 args->cmd = VT_SETMODE;
 2083                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2084                 break;
 2085         }
 2086 
 2087         case LINUX_VT_GETSTATE:
 2088                 args->cmd = VT_GETACTIVE;
 2089                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2090                 break;
 2091 
 2092         case LINUX_VT_RELDISP:
 2093                 args->cmd = VT_RELDISP;
 2094                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2095                 break;
 2096 
 2097         case LINUX_VT_ACTIVATE:
 2098                 args->cmd = VT_ACTIVATE;
 2099                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2100                 break;
 2101 
 2102         case LINUX_VT_WAITACTIVE:
 2103                 args->cmd = VT_WAITACTIVE;
 2104                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2105                 break;
 2106 
 2107         default:
 2108                 error = ENOIOCTL;
 2109                 break;
 2110         }
 2111 
 2112         fdrop(fp, td);
 2113         return (error);
 2114 }
 2115 
 2116 /*
 2117  * Implement the SIOCGIFNAME ioctl
 2118  */
 2119 
 2120 static int
 2121 linux_ioctl_ifname(struct thread *td, struct l_ifreq *uifr)
 2122 {
 2123         struct l_ifreq ifr;
 2124         struct ifnet *ifp;
 2125         int error, ethno, index;
 2126 
 2127         error = copyin(uifr, &ifr, sizeof(ifr));
 2128         if (error != 0)
 2129                 return (error);
 2130 
 2131         CURVNET_SET(TD_TO_VNET(curthread));
 2132         IFNET_RLOCK();
 2133         index = 1;      /* ifr.ifr_ifindex starts from 1 */
 2134         ethno = 0;
 2135         error = ENODEV;
 2136         CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2137                 if (ifr.ifr_ifindex == index) {
 2138                         if (IFP_IS_ETH(ifp))
 2139                                 snprintf(ifr.ifr_name, LINUX_IFNAMSIZ,
 2140                                     "eth%d", ethno);
 2141                         else
 2142                                 strlcpy(ifr.ifr_name, ifp->if_xname,
 2143                                     LINUX_IFNAMSIZ);
 2144                         error = 0;
 2145                         break;
 2146                 }
 2147                 if (IFP_IS_ETH(ifp))
 2148                         ethno++;
 2149                 index++;
 2150         }
 2151         IFNET_RUNLOCK();
 2152         if (error == 0)
 2153                 error = copyout(&ifr, uifr, sizeof(ifr));
 2154         CURVNET_RESTORE();
 2155 
 2156         return (error);
 2157 }
 2158 
 2159 /*
 2160  * Implement the SIOCGIFCONF ioctl
 2161  */
 2162 
 2163 static int
 2164 linux_ifconf(struct thread *td, struct ifconf *uifc)
 2165 {
 2166 #ifdef COMPAT_LINUX32
 2167         struct l_ifconf ifc;
 2168 #else
 2169         struct ifconf ifc;
 2170 #endif
 2171         struct l_ifreq ifr;
 2172         struct ifnet *ifp;
 2173         struct ifaddr *ifa;
 2174         struct sbuf *sb;
 2175         int error, ethno, full = 0, valid_len, max_len;
 2176 
 2177         error = copyin(uifc, &ifc, sizeof(ifc));
 2178         if (error != 0)
 2179                 return (error);
 2180 
 2181         max_len = MAXPHYS - 1;
 2182 
 2183         CURVNET_SET(TD_TO_VNET(td));
 2184         /* handle the 'request buffer size' case */
 2185         if ((l_uintptr_t)ifc.ifc_buf == PTROUT(NULL)) {
 2186                 ifc.ifc_len = 0;
 2187                 IFNET_RLOCK();
 2188                 CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2189                         CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2190                                 struct sockaddr *sa = ifa->ifa_addr;
 2191                                 if (sa->sa_family == AF_INET)
 2192                                         ifc.ifc_len += sizeof(ifr);
 2193                         }
 2194                 }
 2195                 IFNET_RUNLOCK();
 2196                 error = copyout(&ifc, uifc, sizeof(ifc));
 2197                 CURVNET_RESTORE();
 2198                 return (error);
 2199         }
 2200 
 2201         if (ifc.ifc_len <= 0) {
 2202                 CURVNET_RESTORE();
 2203                 return (EINVAL);
 2204         }
 2205 
 2206 again:
 2207         /* Keep track of eth interfaces */
 2208         ethno = 0;
 2209         if (ifc.ifc_len <= max_len) {
 2210                 max_len = ifc.ifc_len;
 2211                 full = 1;
 2212         }
 2213         sb = sbuf_new(NULL, NULL, max_len + 1, SBUF_FIXEDLEN);
 2214         max_len = 0;
 2215         valid_len = 0;
 2216 
 2217         /* Return all AF_INET addresses of all interfaces */
 2218         IFNET_RLOCK();
 2219         CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2220                 int addrs = 0;
 2221 
 2222                 bzero(&ifr, sizeof(ifr));
 2223                 if (IFP_IS_ETH(ifp))
 2224                         snprintf(ifr.ifr_name, LINUX_IFNAMSIZ, "eth%d",
 2225                             ethno++);
 2226                 else
 2227                         strlcpy(ifr.ifr_name, ifp->if_xname, LINUX_IFNAMSIZ);
 2228 
 2229                 /* Walk the address list */
 2230                 CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2231                         struct sockaddr *sa = ifa->ifa_addr;
 2232 
 2233                         if (sa->sa_family == AF_INET) {
 2234                                 ifr.ifr_addr.sa_family = LINUX_AF_INET;
 2235                                 memcpy(ifr.ifr_addr.sa_data, sa->sa_data,
 2236                                     sizeof(ifr.ifr_addr.sa_data));
 2237                                 sbuf_bcat(sb, &ifr, sizeof(ifr));
 2238                                 max_len += sizeof(ifr);
 2239                                 addrs++;
 2240                         }
 2241 
 2242                         if (sbuf_error(sb) == 0)
 2243                                 valid_len = sbuf_len(sb);
 2244                 }
 2245                 if (addrs == 0) {
 2246                         bzero((caddr_t)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
 2247                         sbuf_bcat(sb, &ifr, sizeof(ifr));
 2248                         max_len += sizeof(ifr);
 2249 
 2250                         if (sbuf_error(sb) == 0)
 2251                                 valid_len = sbuf_len(sb);
 2252                 }
 2253         }
 2254         IFNET_RUNLOCK();
 2255 
 2256         if (valid_len != max_len && !full) {
 2257                 sbuf_delete(sb);
 2258                 goto again;
 2259         }
 2260 
 2261         ifc.ifc_len = valid_len;
 2262         sbuf_finish(sb);
 2263         error = copyout(sbuf_data(sb), PTRIN(ifc.ifc_buf), ifc.ifc_len);
 2264         if (error == 0)
 2265                 error = copyout(&ifc, uifc, sizeof(ifc));
 2266         sbuf_delete(sb);
 2267         CURVNET_RESTORE();
 2268 
 2269         return (error);
 2270 }
 2271 
 2272 static int
 2273 linux_gifflags(struct thread *td, struct ifnet *ifp, struct l_ifreq *ifr)
 2274 {
 2275         l_short flags;
 2276 
 2277         linux_ifflags(ifp, &flags);
 2278 
 2279         return (copyout(&flags, &ifr->ifr_flags, sizeof(flags)));
 2280 }
 2281 
 2282 static int
 2283 linux_gifhwaddr(struct ifnet *ifp, struct l_ifreq *ifr)
 2284 {
 2285         struct l_sockaddr lsa;
 2286 
 2287         if (linux_ifhwaddr(ifp, &lsa) != 0)
 2288                 return (ENOENT);
 2289 
 2290         return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof(lsa)));
 2291 }
 2292 
 2293 
 2294  /*
 2295 * If we fault in bsd_to_linux_ifreq() then we will fault when we call
 2296 * the native ioctl().  Thus, we don't really need to check the return
 2297 * value of this function.
 2298 */
 2299 static int
 2300 bsd_to_linux_ifreq(struct ifreq *arg)
 2301 {
 2302         struct ifreq ifr;
 2303         size_t ifr_len = sizeof(struct ifreq);
 2304         int error;
 2305 
 2306         if ((error = copyin(arg, &ifr, ifr_len)))
 2307                 return (error);
 2308 
 2309         *(u_short *)&ifr.ifr_addr = ifr.ifr_addr.sa_family;
 2310 
 2311         error = copyout(&ifr, arg, ifr_len);
 2312 
 2313         return (error);
 2314 }
 2315 
 2316 /*
 2317  * Socket related ioctls
 2318  */
 2319 
 2320 static int
 2321 linux_ioctl_socket(struct thread *td, struct linux_ioctl_args *args)
 2322 {
 2323         char lifname[LINUX_IFNAMSIZ], ifname[IFNAMSIZ];
 2324         struct ifnet *ifp;
 2325         struct file *fp;
 2326         int error, type;
 2327 
 2328         ifp = NULL;
 2329         error = 0;
 2330 
 2331         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 2332         if (error != 0)
 2333                 return (error);
 2334         type = fp->f_type;
 2335         fdrop(fp, td);
 2336         if (type != DTYPE_SOCKET) {
 2337                 /* not a socket - probably a tap / vmnet device */
 2338                 switch (args->cmd) {
 2339                 case LINUX_SIOCGIFADDR:
 2340                 case LINUX_SIOCSIFADDR:
 2341                 case LINUX_SIOCGIFFLAGS:
 2342                         return (linux_ioctl_special(td, args));
 2343                 default:
 2344                         return (ENOIOCTL);
 2345                 }
 2346         }
 2347 
 2348         switch (args->cmd & 0xffff) {
 2349 
 2350         case LINUX_FIOGETOWN:
 2351         case LINUX_FIOSETOWN:
 2352         case LINUX_SIOCADDMULTI:
 2353         case LINUX_SIOCATMARK:
 2354         case LINUX_SIOCDELMULTI:
 2355         case LINUX_SIOCGIFNAME:
 2356         case LINUX_SIOCGIFCONF:
 2357         case LINUX_SIOCGPGRP:
 2358         case LINUX_SIOCSPGRP:
 2359         case LINUX_SIOCGIFCOUNT:
 2360                 /* these ioctls don't take an interface name */
 2361                 break;
 2362 
 2363         case LINUX_SIOCGIFFLAGS:
 2364         case LINUX_SIOCGIFADDR:
 2365         case LINUX_SIOCSIFADDR:
 2366         case LINUX_SIOCGIFDSTADDR:
 2367         case LINUX_SIOCGIFBRDADDR:
 2368         case LINUX_SIOCGIFNETMASK:
 2369         case LINUX_SIOCSIFNETMASK:
 2370         case LINUX_SIOCGIFMTU:
 2371         case LINUX_SIOCSIFMTU:
 2372         case LINUX_SIOCSIFNAME:
 2373         case LINUX_SIOCGIFHWADDR:
 2374         case LINUX_SIOCSIFHWADDR:
 2375         case LINUX_SIOCDEVPRIVATE:
 2376         case LINUX_SIOCDEVPRIVATE+1:
 2377         case LINUX_SIOCGIFINDEX:
 2378                 /* copy in the interface name and translate it. */
 2379                 error = copyin((void *)args->arg, lifname, LINUX_IFNAMSIZ);
 2380                 if (error != 0)
 2381                         return (error);
 2382                 memset(ifname, 0, sizeof(ifname));
 2383                 ifp = ifname_linux_to_bsd(td, lifname, ifname);
 2384                 if (ifp == NULL)
 2385                         return (EINVAL);
 2386                 /*
 2387                  * We need to copy it back out in case we pass the
 2388                  * request on to our native ioctl(), which will expect
 2389                  * the ifreq to be in user space and have the correct
 2390                  * interface name.
 2391                  */
 2392                 error = copyout(ifname, (void *)args->arg, IFNAMSIZ);
 2393                 if (error != 0)
 2394                         return (error);
 2395                 break;
 2396 
 2397         default:
 2398                 return (ENOIOCTL);
 2399         }
 2400 
 2401         switch (args->cmd & 0xffff) {
 2402 
 2403         case LINUX_FIOSETOWN:
 2404                 args->cmd = FIOSETOWN;
 2405                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2406                 break;
 2407 
 2408         case LINUX_SIOCSPGRP:
 2409                 args->cmd = SIOCSPGRP;
 2410                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2411                 break;
 2412 
 2413         case LINUX_FIOGETOWN:
 2414                 args->cmd = FIOGETOWN;
 2415                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2416                 break;
 2417 
 2418         case LINUX_SIOCGPGRP:
 2419                 args->cmd = SIOCGPGRP;
 2420                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2421                 break;
 2422 
 2423         case LINUX_SIOCATMARK:
 2424                 args->cmd = SIOCATMARK;
 2425                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2426                 break;
 2427 
 2428         /* LINUX_SIOCGSTAMP */
 2429 
 2430         case LINUX_SIOCGIFNAME:
 2431                 error = linux_ioctl_ifname(td, (struct l_ifreq *)args->arg);
 2432                 break;
 2433 
 2434         case LINUX_SIOCGIFCONF:
 2435                 error = linux_ifconf(td, (struct ifconf *)args->arg);
 2436                 break;
 2437 
 2438         case LINUX_SIOCGIFFLAGS:
 2439                 args->cmd = SIOCGIFFLAGS;
 2440                 error = linux_gifflags(td, ifp, (struct l_ifreq *)args->arg);
 2441                 break;
 2442 
 2443         case LINUX_SIOCGIFADDR:
 2444                 args->cmd = SIOCGIFADDR;
 2445                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2446                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2447                 break;
 2448 
 2449         case LINUX_SIOCSIFADDR:
 2450                 /* XXX probably doesn't work, included for completeness */
 2451                 args->cmd = SIOCSIFADDR;
 2452                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2453                 break;
 2454 
 2455         case LINUX_SIOCGIFDSTADDR:
 2456                 args->cmd = SIOCGIFDSTADDR;
 2457                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2458                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2459                 break;
 2460 
 2461         case LINUX_SIOCGIFBRDADDR:
 2462                 args->cmd = SIOCGIFBRDADDR;
 2463                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2464                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2465                 break;
 2466 
 2467         case LINUX_SIOCGIFNETMASK:
 2468                 args->cmd = SIOCGIFNETMASK;
 2469                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2470                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2471                 break;
 2472 
 2473         case LINUX_SIOCSIFNETMASK:
 2474                 error = ENOIOCTL;
 2475                 break;
 2476 
 2477         case LINUX_SIOCGIFMTU:
 2478                 args->cmd = SIOCGIFMTU;
 2479                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2480                 break;
 2481 
 2482         case LINUX_SIOCSIFMTU:
 2483                 args->cmd = SIOCSIFMTU;
 2484                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2485                 break;
 2486 
 2487         case LINUX_SIOCSIFNAME:
 2488                 error = ENOIOCTL;
 2489                 break;
 2490 
 2491         case LINUX_SIOCGIFHWADDR:
 2492                 error = linux_gifhwaddr(ifp, (struct l_ifreq *)args->arg);
 2493                 break;
 2494 
 2495         case LINUX_SIOCSIFHWADDR:
 2496                 error = ENOIOCTL;
 2497                 break;
 2498 
 2499         case LINUX_SIOCADDMULTI:
 2500                 args->cmd = SIOCADDMULTI;
 2501                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2502                 break;
 2503 
 2504         case LINUX_SIOCDELMULTI:
 2505                 args->cmd = SIOCDELMULTI;
 2506                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2507                 break;
 2508 
 2509         case LINUX_SIOCGIFINDEX:
 2510                 args->cmd = SIOCGIFINDEX;
 2511                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2512                 break;
 2513 
 2514         case LINUX_SIOCGIFCOUNT:
 2515                 error = 0;
 2516                 break;
 2517 
 2518         /*
 2519          * XXX This is slightly bogus, but these ioctls are currently
 2520          * XXX only used by the aironet (if_an) network driver.
 2521          */
 2522         case LINUX_SIOCDEVPRIVATE:
 2523                 args->cmd = SIOCGPRIVATE_0;
 2524                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2525                 break;
 2526 
 2527         case LINUX_SIOCDEVPRIVATE+1:
 2528                 args->cmd = SIOCGPRIVATE_1;
 2529                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2530                 break;
 2531         }
 2532 
 2533         if (ifp != NULL)
 2534                 /* restore the original interface name */
 2535                 copyout(lifname, (void *)args->arg, LINUX_IFNAMSIZ);
 2536 
 2537         return (error);
 2538 }
 2539 
 2540 /*
 2541  * Device private ioctl handler
 2542  */
 2543 static int
 2544 linux_ioctl_private(struct thread *td, struct linux_ioctl_args *args)
 2545 {
 2546         struct file *fp;
 2547         int error, type;
 2548 
 2549         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 2550         if (error != 0)
 2551                 return (error);
 2552         type = fp->f_type;
 2553         fdrop(fp, td);
 2554         if (type == DTYPE_SOCKET)
 2555                 return (linux_ioctl_socket(td, args));
 2556         return (ENOIOCTL);
 2557 }
 2558 
 2559 /*
 2560  * DRM ioctl handler (sys/dev/drm)
 2561  */
 2562 static int
 2563 linux_ioctl_drm(struct thread *td, struct linux_ioctl_args *args)
 2564 {
 2565         args->cmd = SETDIR(args->cmd);
 2566         return (sys_ioctl(td, (struct ioctl_args *)args));
 2567 }
 2568 
 2569 #ifdef COMPAT_LINUX32
 2570 static int
 2571 linux_ioctl_sg_io(struct thread *td, struct linux_ioctl_args *args)
 2572 {
 2573         struct sg_io_hdr io;
 2574         struct sg_io_hdr32 io32;
 2575         struct file *fp;
 2576         int error;
 2577 
 2578         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 2579         if (error != 0) {
 2580                 printf("sg_linux_ioctl: fget returned %d\n", error);
 2581                 return (error);
 2582         }
 2583 
 2584         if ((error = copyin((void *)args->arg, &io32, sizeof(io32))) != 0)
 2585                 goto out;
 2586 
 2587         CP(io32, io, interface_id);
 2588         CP(io32, io, dxfer_direction);
 2589         CP(io32, io, cmd_len);
 2590         CP(io32, io, mx_sb_len);
 2591         CP(io32, io, iovec_count);
 2592         CP(io32, io, dxfer_len);
 2593         PTRIN_CP(io32, io, dxferp);
 2594         PTRIN_CP(io32, io, cmdp);
 2595         PTRIN_CP(io32, io, sbp);
 2596         CP(io32, io, timeout);
 2597         CP(io32, io, flags);
 2598         CP(io32, io, pack_id);
 2599         PTRIN_CP(io32, io, usr_ptr);
 2600         CP(io32, io, status);
 2601         CP(io32, io, masked_status);
 2602         CP(io32, io, msg_status);
 2603         CP(io32, io, sb_len_wr);
 2604         CP(io32, io, host_status);
 2605         CP(io32, io, driver_status);
 2606         CP(io32, io, resid);
 2607         CP(io32, io, duration);
 2608         CP(io32, io, info);
 2609 
 2610         if ((error = fo_ioctl(fp, SG_IO, (caddr_t)&io, td->td_ucred, td)) != 0)
 2611                 goto out;
 2612 
 2613         CP(io, io32, interface_id);
 2614         CP(io, io32, dxfer_direction);
 2615         CP(io, io32, cmd_len);
 2616         CP(io, io32, mx_sb_len);
 2617         CP(io, io32, iovec_count);
 2618         CP(io, io32, dxfer_len);
 2619         PTROUT_CP(io, io32, dxferp);
 2620         PTROUT_CP(io, io32, cmdp);
 2621         PTROUT_CP(io, io32, sbp);
 2622         CP(io, io32, timeout);
 2623         CP(io, io32, flags);
 2624         CP(io, io32, pack_id);
 2625         PTROUT_CP(io, io32, usr_ptr);
 2626         CP(io, io32, status);
 2627         CP(io, io32, masked_status);
 2628         CP(io, io32, msg_status);
 2629         CP(io, io32, sb_len_wr);
 2630         CP(io, io32, host_status);
 2631         CP(io, io32, driver_status);
 2632         CP(io, io32, resid);
 2633         CP(io, io32, duration);
 2634         CP(io, io32, info);
 2635 
 2636         error = copyout(&io32, (void *)args->arg, sizeof(io32));
 2637 
 2638 out:
 2639         fdrop(fp, td);
 2640         return (error);
 2641 }
 2642 #endif
 2643 
 2644 static int
 2645 linux_ioctl_sg(struct thread *td, struct linux_ioctl_args *args)
 2646 {
 2647 
 2648         switch (args->cmd) {
 2649         case LINUX_SG_GET_VERSION_NUM:
 2650                 args->cmd = SG_GET_VERSION_NUM;
 2651                 break;
 2652         case LINUX_SG_SET_TIMEOUT:
 2653                 args->cmd = SG_SET_TIMEOUT;
 2654                 break;
 2655         case LINUX_SG_GET_TIMEOUT:
 2656                 args->cmd = SG_GET_TIMEOUT;
 2657                 break;
 2658         case LINUX_SG_IO:
 2659                 args->cmd = SG_IO;
 2660 #ifdef COMPAT_LINUX32
 2661                 return (linux_ioctl_sg_io(td, args));
 2662 #endif
 2663                 break;
 2664         case LINUX_SG_GET_RESERVED_SIZE:
 2665                 args->cmd = SG_GET_RESERVED_SIZE;
 2666                 break;
 2667         case LINUX_SG_GET_SCSI_ID:
 2668                 args->cmd = SG_GET_SCSI_ID;
 2669                 break;
 2670         case LINUX_SG_GET_SG_TABLESIZE:
 2671                 args->cmd = SG_GET_SG_TABLESIZE;
 2672                 break;
 2673         default:
 2674                 return (ENODEV);
 2675         }
 2676         return (sys_ioctl(td, (struct ioctl_args *)args));
 2677 }
 2678 
 2679 /*
 2680  * Video4Linux (V4L) ioctl handler
 2681  */
 2682 static int
 2683 linux_to_bsd_v4l_tuner(struct l_video_tuner *lvt, struct video_tuner *vt)
 2684 {
 2685         vt->tuner = lvt->tuner;
 2686         strlcpy(vt->name, lvt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
 2687         vt->rangelow = lvt->rangelow;   /* possible long size conversion */
 2688         vt->rangehigh = lvt->rangehigh; /* possible long size conversion */
 2689         vt->flags = lvt->flags;
 2690         vt->mode = lvt->mode;
 2691         vt->signal = lvt->signal;
 2692         return (0);
 2693 }
 2694 
 2695 static int
 2696 bsd_to_linux_v4l_tuner(struct video_tuner *vt, struct l_video_tuner *lvt)
 2697 {
 2698         lvt->tuner = vt->tuner;
 2699         strlcpy(lvt->name, vt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
 2700         lvt->rangelow = vt->rangelow;   /* possible long size conversion */
 2701         lvt->rangehigh = vt->rangehigh; /* possible long size conversion */
 2702         lvt->flags = vt->flags;
 2703         lvt->mode = vt->mode;
 2704         lvt->signal = vt->signal;
 2705         return (0);
 2706 }
 2707 
 2708 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2709 static int
 2710 linux_to_bsd_v4l_clip(struct l_video_clip *lvc, struct video_clip *vc)
 2711 {
 2712         vc->x = lvc->x;
 2713         vc->y = lvc->y;
 2714         vc->width = lvc->width;
 2715         vc->height = lvc->height;
 2716         vc->next = PTRIN(lvc->next);    /* possible pointer size conversion */
 2717         return (0);
 2718 }
 2719 #endif
 2720 
 2721 static int
 2722 linux_to_bsd_v4l_window(struct l_video_window *lvw, struct video_window *vw)
 2723 {
 2724         vw->x = lvw->x;
 2725         vw->y = lvw->y;
 2726         vw->width = lvw->width;
 2727         vw->height = lvw->height;
 2728         vw->chromakey = lvw->chromakey;
 2729         vw->flags = lvw->flags;
 2730         vw->clips = PTRIN(lvw->clips);  /* possible pointer size conversion */
 2731         vw->clipcount = lvw->clipcount;
 2732         return (0);
 2733 }
 2734 
 2735 static int
 2736 bsd_to_linux_v4l_window(struct video_window *vw, struct l_video_window *lvw)
 2737 {
 2738         memset(lvw, 0, sizeof(*lvw));
 2739 
 2740         lvw->x = vw->x;
 2741         lvw->y = vw->y;
 2742         lvw->width = vw->width;
 2743         lvw->height = vw->height;
 2744         lvw->chromakey = vw->chromakey;
 2745         lvw->flags = vw->flags;
 2746         lvw->clips = PTROUT(vw->clips); /* possible pointer size conversion */
 2747         lvw->clipcount = vw->clipcount;
 2748         return (0);
 2749 }
 2750 
 2751 static int
 2752 linux_to_bsd_v4l_buffer(struct l_video_buffer *lvb, struct video_buffer *vb)
 2753 {
 2754         vb->base = PTRIN(lvb->base);    /* possible pointer size conversion */
 2755         vb->height = lvb->height;
 2756         vb->width = lvb->width;
 2757         vb->depth = lvb->depth;
 2758         vb->bytesperline = lvb->bytesperline;
 2759         return (0);
 2760 }
 2761 
 2762 static int
 2763 bsd_to_linux_v4l_buffer(struct video_buffer *vb, struct l_video_buffer *lvb)
 2764 {
 2765         lvb->base = PTROUT(vb->base);   /* possible pointer size conversion */
 2766         lvb->height = vb->height;
 2767         lvb->width = vb->width;
 2768         lvb->depth = vb->depth;
 2769         lvb->bytesperline = vb->bytesperline;
 2770         return (0);
 2771 }
 2772 
 2773 static int
 2774 linux_to_bsd_v4l_code(struct l_video_code *lvc, struct video_code *vc)
 2775 {
 2776         strlcpy(vc->loadwhat, lvc->loadwhat, LINUX_VIDEO_CODE_LOADWHAT_SIZE);
 2777         vc->datasize = lvc->datasize;
 2778         vc->data = PTRIN(lvc->data);    /* possible pointer size conversion */
 2779         return (0);
 2780 }
 2781 
 2782 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2783 static int
 2784 linux_v4l_clip_copy(void *lvc, struct video_clip **ppvc)
 2785 {
 2786         int error;
 2787         struct video_clip vclip;
 2788         struct l_video_clip l_vclip;
 2789 
 2790         error = copyin(lvc, &l_vclip, sizeof(l_vclip));
 2791         if (error) return (error);
 2792         linux_to_bsd_v4l_clip(&l_vclip, &vclip);
 2793         /* XXX: If there can be no concurrency: s/M_NOWAIT/M_WAITOK/ */
 2794         if ((*ppvc = malloc(sizeof(**ppvc), M_LINUX, M_NOWAIT)) == NULL)
 2795                 return (ENOMEM);    /* XXX: Linux has no ENOMEM here. */
 2796         memcpy(*ppvc, &vclip, sizeof(vclip));
 2797         (*ppvc)->next = NULL;
 2798         return (0);
 2799 }
 2800 
 2801 static int
 2802 linux_v4l_cliplist_free(struct video_window *vw)
 2803 {
 2804         struct video_clip **ppvc;
 2805         struct video_clip **ppvc_next;
 2806 
 2807         for (ppvc = &(vw->clips); *ppvc != NULL; ppvc = ppvc_next) {
 2808                 ppvc_next = &((*ppvc)->next);
 2809                 free(*ppvc, M_LINUX);
 2810         }
 2811         vw->clips = NULL;
 2812 
 2813         return (0);
 2814 }
 2815 
 2816 static int
 2817 linux_v4l_cliplist_copy(struct l_video_window *lvw, struct video_window *vw)
 2818 {
 2819         int error;
 2820         int clipcount;
 2821         void *plvc;
 2822         struct video_clip **ppvc;
 2823 
 2824         /*
 2825          * XXX: The cliplist is used to pass in a list of clipping
 2826          *      rectangles or, if clipcount == VIDEO_CLIP_BITMAP, a
 2827          *      clipping bitmap.  Some Linux apps, however, appear to
 2828          *      leave cliplist and clips uninitialized.  In any case,
 2829          *      the cliplist is not used by pwc(4), at the time of
 2830          *      writing, FreeBSD's only V4L driver.  When a driver
 2831          *      that uses the cliplist is developed, this code may
 2832          *      need re-examiniation.
 2833          */
 2834         error = 0;
 2835         clipcount = vw->clipcount;
 2836         if (clipcount == VIDEO_CLIP_BITMAP) {
 2837                 /*
 2838                  * In this case, the pointer (clips) is overloaded
 2839                  * to be a "void *" to a bitmap, therefore there
 2840                  * is no struct video_clip to copy now.
 2841                  */
 2842         } else if (clipcount > 0 && clipcount <= 16384) {
 2843                 /*
 2844                  * Clips points to list of clip rectangles, so
 2845                  * copy the list.
 2846                  *
 2847                  * XXX: Upper limit of 16384 was used here to try to
 2848                  *      avoid cases when clipcount and clips pointer
 2849                  *      are uninitialized and therefore have high random
 2850                  *      values, as is the case in the Linux Skype
 2851                  *      application.  The value 16384 was chosen as that
 2852                  *      is what is used in the Linux stradis(4) MPEG
 2853                  *      decoder driver, the only place we found an
 2854                  *      example of cliplist use.
 2855                  */
 2856                 plvc = PTRIN(lvw->clips);
 2857                 vw->clips = NULL;
 2858                 ppvc = &(vw->clips);
 2859                 while (clipcount-- > 0) {
 2860                         if (plvc == NULL) {
 2861                                 error = EFAULT;
 2862                                 break;
 2863                         } else {
 2864                                 error = linux_v4l_clip_copy(plvc, ppvc);
 2865                                 if (error) {
 2866                                         linux_v4l_cliplist_free(vw);
 2867                                         break;
 2868                                 }
 2869                         }
 2870                         ppvc = &((*ppvc)->next);
 2871                         plvc = PTRIN(((struct l_video_clip *) plvc)->next);
 2872                 }
 2873         } else {
 2874                 /*
 2875                  * clipcount == 0 or negative (but not VIDEO_CLIP_BITMAP)
 2876                  * Force cliplist to null.
 2877                  */
 2878                 vw->clipcount = 0;
 2879                 vw->clips = NULL;
 2880         }
 2881         return (error);
 2882 }
 2883 #endif
 2884 
 2885 static int
 2886 linux_ioctl_v4l(struct thread *td, struct linux_ioctl_args *args)
 2887 {
 2888         struct file *fp;
 2889         int error;
 2890         struct video_tuner vtun;
 2891         struct video_window vwin;
 2892         struct video_buffer vbuf;
 2893         struct video_code vcode;
 2894         struct l_video_tuner l_vtun;
 2895         struct l_video_window l_vwin;
 2896         struct l_video_buffer l_vbuf;
 2897         struct l_video_code l_vcode;
 2898 
 2899         switch (args->cmd & 0xffff) {
 2900         case LINUX_VIDIOCGCAP:          args->cmd = VIDIOCGCAP; break;
 2901         case LINUX_VIDIOCGCHAN:         args->cmd = VIDIOCGCHAN; break;
 2902         case LINUX_VIDIOCSCHAN:         args->cmd = VIDIOCSCHAN; break;
 2903 
 2904         case LINUX_VIDIOCGTUNER:
 2905                 error = fget(td, args->fd,
 2906                     &cap_ioctl_rights, &fp);
 2907                 if (error != 0)
 2908                         return (error);
 2909                 error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
 2910                 if (error) {
 2911                         fdrop(fp, td);
 2912                         return (error);
 2913                 }
 2914                 linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
 2915                 error = fo_ioctl(fp, VIDIOCGTUNER, &vtun, td->td_ucred, td);
 2916                 if (!error) {
 2917                         bsd_to_linux_v4l_tuner(&vtun, &l_vtun);
 2918                         error = copyout(&l_vtun, (void *) args->arg,
 2919                             sizeof(l_vtun));
 2920                 }
 2921                 fdrop(fp, td);
 2922                 return (error);
 2923 
 2924         case LINUX_VIDIOCSTUNER:
 2925                 error = fget(td, args->fd,
 2926                     &cap_ioctl_rights, &fp);
 2927                 if (error != 0)
 2928                         return (error);
 2929                 error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
 2930                 if (error) {
 2931                         fdrop(fp, td);
 2932                         return (error);
 2933                 }
 2934                 linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
 2935                 error = fo_ioctl(fp, VIDIOCSTUNER, &vtun, td->td_ucred, td);
 2936                 fdrop(fp, td);
 2937                 return (error);
 2938 
 2939         case LINUX_VIDIOCGPICT:         args->cmd = VIDIOCGPICT; break;
 2940         case LINUX_VIDIOCSPICT:         args->cmd = VIDIOCSPICT; break;
 2941         case LINUX_VIDIOCCAPTURE:       args->cmd = VIDIOCCAPTURE; break;
 2942 
 2943         case LINUX_VIDIOCGWIN:
 2944                 error = fget(td, args->fd,
 2945                     &cap_ioctl_rights, &fp);
 2946                 if (error != 0)
 2947                         return (error);
 2948                 error = fo_ioctl(fp, VIDIOCGWIN, &vwin, td->td_ucred, td);
 2949                 if (!error) {
 2950                         bsd_to_linux_v4l_window(&vwin, &l_vwin);
 2951                         error = copyout(&l_vwin, (void *) args->arg,
 2952                             sizeof(l_vwin));
 2953                 }
 2954                 fdrop(fp, td);
 2955                 return (error);
 2956 
 2957         case LINUX_VIDIOCSWIN:
 2958                 error = fget(td, args->fd,
 2959                     &cap_ioctl_rights, &fp);
 2960                 if (error != 0)
 2961                         return (error);
 2962                 error = copyin((void *) args->arg, &l_vwin, sizeof(l_vwin));
 2963                 if (error) {
 2964                         fdrop(fp, td);
 2965                         return (error);
 2966                 }
 2967                 linux_to_bsd_v4l_window(&l_vwin, &vwin);
 2968 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2969                 error = linux_v4l_cliplist_copy(&l_vwin, &vwin);
 2970                 if (error) {
 2971                         fdrop(fp, td);
 2972                         return (error);
 2973                 }
 2974 #endif
 2975                 error = fo_ioctl(fp, VIDIOCSWIN, &vwin, td->td_ucred, td);
 2976                 fdrop(fp, td);
 2977 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2978                 linux_v4l_cliplist_free(&vwin);
 2979 #endif
 2980                 return (error);
 2981 
 2982         case LINUX_VIDIOCGFBUF:
 2983                 error = fget(td, args->fd,
 2984                     &cap_ioctl_rights, &fp);
 2985                 if (error != 0)
 2986                         return (error);
 2987                 error = fo_ioctl(fp, VIDIOCGFBUF, &vbuf, td->td_ucred, td);
 2988                 if (!error) {
 2989                         bsd_to_linux_v4l_buffer(&vbuf, &l_vbuf);
 2990                         error = copyout(&l_vbuf, (void *) args->arg,
 2991                             sizeof(l_vbuf));
 2992                 }
 2993                 fdrop(fp, td);
 2994                 return (error);
 2995 
 2996         case LINUX_VIDIOCSFBUF:
 2997                 error = fget(td, args->fd,
 2998                     &cap_ioctl_rights, &fp);
 2999                 if (error != 0)
 3000                         return (error);
 3001                 error = copyin((void *) args->arg, &l_vbuf, sizeof(l_vbuf));
 3002                 if (error) {
 3003                         fdrop(fp, td);
 3004                         return (error);
 3005                 }
 3006                 linux_to_bsd_v4l_buffer(&l_vbuf, &vbuf);
 3007                 error = fo_ioctl(fp, VIDIOCSFBUF, &vbuf, td->td_ucred, td);
 3008                 fdrop(fp, td);
 3009                 return (error);
 3010 
 3011         case LINUX_VIDIOCKEY:           args->cmd = VIDIOCKEY; break;
 3012         case LINUX_VIDIOCGFREQ:         args->cmd = VIDIOCGFREQ; break;
 3013         case LINUX_VIDIOCSFREQ:         args->cmd = VIDIOCSFREQ; break;
 3014         case LINUX_VIDIOCGAUDIO:        args->cmd = VIDIOCGAUDIO; break;
 3015         case LINUX_VIDIOCSAUDIO:        args->cmd = VIDIOCSAUDIO; break;
 3016         case LINUX_VIDIOCSYNC:          args->cmd = VIDIOCSYNC; break;
 3017         case LINUX_VIDIOCMCAPTURE:      args->cmd = VIDIOCMCAPTURE; break;
 3018         case LINUX_VIDIOCGMBUF:         args->cmd = VIDIOCGMBUF; break;
 3019         case LINUX_VIDIOCGUNIT:         args->cmd = VIDIOCGUNIT; break;
 3020         case LINUX_VIDIOCGCAPTURE:      args->cmd = VIDIOCGCAPTURE; break;
 3021         case LINUX_VIDIOCSCAPTURE:      args->cmd = VIDIOCSCAPTURE; break;
 3022         case LINUX_VIDIOCSPLAYMODE:     args->cmd = VIDIOCSPLAYMODE; break;
 3023         case LINUX_VIDIOCSWRITEMODE:    args->cmd = VIDIOCSWRITEMODE; break;
 3024         case LINUX_VIDIOCGPLAYINFO:     args->cmd = VIDIOCGPLAYINFO; break;
 3025 
 3026         case LINUX_VIDIOCSMICROCODE:
 3027                 error = fget(td, args->fd,
 3028                     &cap_ioctl_rights, &fp);
 3029                 if (error != 0)
 3030                         return (error);
 3031                 error = copyin((void *) args->arg, &l_vcode, sizeof(l_vcode));
 3032                 if (error) {
 3033                         fdrop(fp, td);
 3034                         return (error);
 3035                 }
 3036                 linux_to_bsd_v4l_code(&l_vcode, &vcode);
 3037                 error = fo_ioctl(fp, VIDIOCSMICROCODE, &vcode, td->td_ucred, td);
 3038                 fdrop(fp, td);
 3039                 return (error);
 3040 
 3041         case LINUX_VIDIOCGVBIFMT:       args->cmd = VIDIOCGVBIFMT; break;
 3042         case LINUX_VIDIOCSVBIFMT:       args->cmd = VIDIOCSVBIFMT; break;
 3043         default:                        return (ENOIOCTL);
 3044         }
 3045 
 3046         error = sys_ioctl(td, (struct ioctl_args *)args);
 3047         return (error);
 3048 }
 3049 
 3050 /*
 3051  * Special ioctl handler
 3052  */
 3053 static int
 3054 linux_ioctl_special(struct thread *td, struct linux_ioctl_args *args)
 3055 {
 3056         int error;
 3057 
 3058         switch (args->cmd) {
 3059         case LINUX_SIOCGIFADDR:
 3060                 args->cmd = SIOCGIFADDR;
 3061                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3062                 break;
 3063         case LINUX_SIOCSIFADDR:
 3064                 args->cmd = SIOCSIFADDR;
 3065                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3066                 break;
 3067         case LINUX_SIOCGIFFLAGS:
 3068                 args->cmd = SIOCGIFFLAGS;
 3069                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3070                 break;
 3071         default:
 3072                 error = ENOIOCTL;
 3073         }
 3074 
 3075         return (error);
 3076 }
 3077 
 3078 static int
 3079 linux_to_bsd_v4l2_standard(struct l_v4l2_standard *lvstd, struct v4l2_standard *vstd)
 3080 {
 3081         vstd->index = lvstd->index;
 3082         vstd->id = lvstd->id;
 3083         CTASSERT(sizeof(vstd->name) == sizeof(lvstd->name));
 3084         memcpy(vstd->name, lvstd->name, sizeof(vstd->name));
 3085         vstd->frameperiod = lvstd->frameperiod;
 3086         vstd->framelines = lvstd->framelines;
 3087         CTASSERT(sizeof(vstd->reserved) == sizeof(lvstd->reserved));
 3088         memcpy(vstd->reserved, lvstd->reserved, sizeof(vstd->reserved));
 3089         return (0);
 3090 }
 3091 
 3092 static int
 3093 bsd_to_linux_v4l2_standard(struct v4l2_standard *vstd, struct l_v4l2_standard *lvstd)
 3094 {
 3095         lvstd->index = vstd->index;
 3096         lvstd->id = vstd->id;
 3097         CTASSERT(sizeof(vstd->name) == sizeof(lvstd->name));
 3098         memcpy(lvstd->name, vstd->name, sizeof(lvstd->name));
 3099         lvstd->frameperiod = vstd->frameperiod;
 3100         lvstd->framelines = vstd->framelines;
 3101         CTASSERT(sizeof(vstd->reserved) == sizeof(lvstd->reserved));
 3102         memcpy(lvstd->reserved, vstd->reserved, sizeof(lvstd->reserved));
 3103         return (0);
 3104 }
 3105 
 3106 static int
 3107 linux_to_bsd_v4l2_buffer(struct l_v4l2_buffer *lvb, struct v4l2_buffer *vb)
 3108 {
 3109         vb->index = lvb->index;
 3110         vb->type = lvb->type;
 3111         vb->bytesused = lvb->bytesused;
 3112         vb->flags = lvb->flags;
 3113         vb->field = lvb->field;
 3114         vb->timestamp.tv_sec = lvb->timestamp.tv_sec;
 3115         vb->timestamp.tv_usec = lvb->timestamp.tv_usec;
 3116         memcpy(&vb->timecode, &lvb->timecode, sizeof (lvb->timecode));
 3117         vb->sequence = lvb->sequence;
 3118         vb->memory = lvb->memory;
 3119         if (lvb->memory == V4L2_MEMORY_USERPTR)
 3120                 /* possible pointer size conversion */
 3121                 vb->m.userptr = (unsigned long)PTRIN(lvb->m.userptr);
 3122         else
 3123                 vb->m.offset = lvb->m.offset;
 3124         vb->length = lvb->length;
 3125         vb->input = lvb->input;
 3126         vb->reserved = lvb->reserved;
 3127         return (0);
 3128 }
 3129 
 3130 static int
 3131 bsd_to_linux_v4l2_buffer(struct v4l2_buffer *vb, struct l_v4l2_buffer *lvb)
 3132 {
 3133         lvb->index = vb->index;
 3134         lvb->type = vb->type;
 3135         lvb->bytesused = vb->bytesused;
 3136         lvb->flags = vb->flags;
 3137         lvb->field = vb->field;
 3138         lvb->timestamp.tv_sec = vb->timestamp.tv_sec;
 3139         lvb->timestamp.tv_usec = vb->timestamp.tv_usec;
 3140         memcpy(&lvb->timecode, &vb->timecode, sizeof (vb->timecode));
 3141         lvb->sequence = vb->sequence;
 3142         lvb->memory = vb->memory;
 3143         if (vb->memory == V4L2_MEMORY_USERPTR)
 3144                 /* possible pointer size conversion */
 3145                 lvb->m.userptr = PTROUT(vb->m.userptr);
 3146         else
 3147                 lvb->m.offset = vb->m.offset;
 3148         lvb->length = vb->length;
 3149         lvb->input = vb->input;
 3150         lvb->reserved = vb->reserved;
 3151         return (0);
 3152 }
 3153 
 3154 static int
 3155 linux_to_bsd_v4l2_format(struct l_v4l2_format *lvf, struct v4l2_format *vf)
 3156 {
 3157         vf->type = lvf->type;
 3158         if (lvf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
 3159 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3160             || lvf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3161 #endif
 3162             )
 3163                 /*
 3164                  * XXX TODO - needs 32 -> 64 bit conversion:
 3165                  * (unused by webcams?)
 3166                  */
 3167                 return (EINVAL);
 3168         memcpy(&vf->fmt, &lvf->fmt, sizeof(vf->fmt));
 3169         return (0);
 3170 }
 3171 
 3172 static int
 3173 bsd_to_linux_v4l2_format(struct v4l2_format *vf, struct l_v4l2_format *lvf)
 3174 {
 3175         lvf->type = vf->type;
 3176         if (vf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
 3177 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3178             || vf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3179 #endif
 3180             )
 3181                 /*
 3182                  * XXX TODO - needs 32 -> 64 bit conversion:
 3183                  * (unused by webcams?)
 3184                  */
 3185                 return (EINVAL);
 3186         memcpy(&lvf->fmt, &vf->fmt, sizeof(vf->fmt));
 3187         return (0);
 3188 }
 3189 static int
 3190 linux_ioctl_v4l2(struct thread *td, struct linux_ioctl_args *args)
 3191 {
 3192         struct file *fp;
 3193         int error;
 3194         struct v4l2_format vformat;
 3195         struct l_v4l2_format l_vformat;
 3196         struct v4l2_standard vstd;
 3197         struct l_v4l2_standard l_vstd;
 3198         struct l_v4l2_buffer l_vbuf;
 3199         struct v4l2_buffer vbuf;
 3200         struct v4l2_input vinp;
 3201 
 3202         switch (args->cmd & 0xffff) {
 3203         case LINUX_VIDIOC_RESERVED:
 3204         case LINUX_VIDIOC_LOG_STATUS:
 3205                 if ((args->cmd & IOC_DIRMASK) != LINUX_IOC_VOID)
 3206                         return (ENOIOCTL);
 3207                 args->cmd = (args->cmd & 0xffff) | IOC_VOID;
 3208                 break;
 3209 
 3210         case LINUX_VIDIOC_OVERLAY:
 3211         case LINUX_VIDIOC_STREAMON:
 3212         case LINUX_VIDIOC_STREAMOFF:
 3213         case LINUX_VIDIOC_S_STD:
 3214         case LINUX_VIDIOC_S_TUNER:
 3215         case LINUX_VIDIOC_S_AUDIO:
 3216         case LINUX_VIDIOC_S_AUDOUT:
 3217         case LINUX_VIDIOC_S_MODULATOR:
 3218         case LINUX_VIDIOC_S_FREQUENCY:
 3219         case LINUX_VIDIOC_S_CROP:
 3220         case LINUX_VIDIOC_S_JPEGCOMP:
 3221         case LINUX_VIDIOC_S_PRIORITY:
 3222         case LINUX_VIDIOC_DBG_S_REGISTER:
 3223         case LINUX_VIDIOC_S_HW_FREQ_SEEK:
 3224         case LINUX_VIDIOC_SUBSCRIBE_EVENT:
 3225         case LINUX_VIDIOC_UNSUBSCRIBE_EVENT:
 3226                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_IN;
 3227                 break;
 3228 
 3229         case LINUX_VIDIOC_QUERYCAP:
 3230         case LINUX_VIDIOC_G_STD:
 3231         case LINUX_VIDIOC_G_AUDIO:
 3232         case LINUX_VIDIOC_G_INPUT:
 3233         case LINUX_VIDIOC_G_OUTPUT:
 3234         case LINUX_VIDIOC_G_AUDOUT:
 3235         case LINUX_VIDIOC_G_JPEGCOMP:
 3236         case LINUX_VIDIOC_QUERYSTD:
 3237         case LINUX_VIDIOC_G_PRIORITY:
 3238         case LINUX_VIDIOC_QUERY_DV_PRESET:
 3239                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_OUT;
 3240                 break;
 3241 
 3242         case LINUX_VIDIOC_ENUM_FMT:
 3243         case LINUX_VIDIOC_REQBUFS:
 3244         case LINUX_VIDIOC_G_PARM:
 3245         case LINUX_VIDIOC_S_PARM:
 3246         case LINUX_VIDIOC_G_CTRL:
 3247         case LINUX_VIDIOC_S_CTRL:
 3248         case LINUX_VIDIOC_G_TUNER:
 3249         case LINUX_VIDIOC_QUERYCTRL:
 3250         case LINUX_VIDIOC_QUERYMENU:
 3251         case LINUX_VIDIOC_S_INPUT:
 3252         case LINUX_VIDIOC_S_OUTPUT:
 3253         case LINUX_VIDIOC_ENUMOUTPUT:
 3254         case LINUX_VIDIOC_G_MODULATOR:
 3255         case LINUX_VIDIOC_G_FREQUENCY:
 3256         case LINUX_VIDIOC_CROPCAP:
 3257         case LINUX_VIDIOC_G_CROP:
 3258         case LINUX_VIDIOC_ENUMAUDIO:
 3259         case LINUX_VIDIOC_ENUMAUDOUT:
 3260         case LINUX_VIDIOC_G_SLICED_VBI_CAP:
 3261 #ifdef VIDIOC_ENUM_FRAMESIZES
 3262         case LINUX_VIDIOC_ENUM_FRAMESIZES:
 3263         case LINUX_VIDIOC_ENUM_FRAMEINTERVALS:
 3264         case LINUX_VIDIOC_ENCODER_CMD:
 3265         case LINUX_VIDIOC_TRY_ENCODER_CMD:
 3266 #endif
 3267         case LINUX_VIDIOC_DBG_G_REGISTER:
 3268         case LINUX_VIDIOC_DBG_G_CHIP_IDENT:
 3269         case LINUX_VIDIOC_ENUM_DV_PRESETS:
 3270         case LINUX_VIDIOC_S_DV_PRESET:
 3271         case LINUX_VIDIOC_G_DV_PRESET:
 3272         case LINUX_VIDIOC_S_DV_TIMINGS:
 3273         case LINUX_VIDIOC_G_DV_TIMINGS:
 3274                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
 3275                 break;
 3276 
 3277         case LINUX_VIDIOC_G_FMT:
 3278         case LINUX_VIDIOC_S_FMT:
 3279         case LINUX_VIDIOC_TRY_FMT:
 3280                 error = copyin((void *)args->arg, &l_vformat, sizeof(l_vformat));
 3281                 if (error)
 3282                         return (error);
 3283                 error = fget(td, args->fd,
 3284                     &cap_ioctl_rights, &fp);
 3285                 if (error)
 3286                         return (error);
 3287                 if (linux_to_bsd_v4l2_format(&l_vformat, &vformat) != 0)
 3288                         error = EINVAL;
 3289                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_G_FMT)
 3290                         error = fo_ioctl(fp, VIDIOC_G_FMT, &vformat,
 3291                             td->td_ucred, td);
 3292                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_S_FMT)
 3293                         error = fo_ioctl(fp, VIDIOC_S_FMT, &vformat,
 3294                             td->td_ucred, td);
 3295                 else
 3296                         error = fo_ioctl(fp, VIDIOC_TRY_FMT, &vformat,
 3297                             td->td_ucred, td);
 3298                 bsd_to_linux_v4l2_format(&vformat, &l_vformat);
 3299                 copyout(&l_vformat, (void *)args->arg, sizeof(l_vformat));
 3300                 fdrop(fp, td);
 3301                 return (error);
 3302 
 3303         case LINUX_VIDIOC_ENUMSTD:
 3304                 error = copyin((void *)args->arg, &l_vstd, sizeof(l_vstd));
 3305                 if (error)
 3306                         return (error);
 3307                 linux_to_bsd_v4l2_standard(&l_vstd, &vstd);
 3308                 error = fget(td, args->fd,
 3309                     &cap_ioctl_rights, &fp);
 3310                 if (error)
 3311                         return (error);
 3312                 error = fo_ioctl(fp, VIDIOC_ENUMSTD, (caddr_t)&vstd,
 3313                     td->td_ucred, td);
 3314                 if (error) {
 3315                         fdrop(fp, td);
 3316                         return (error);
 3317                 }
 3318                 bsd_to_linux_v4l2_standard(&vstd, &l_vstd);
 3319                 error = copyout(&l_vstd, (void *)args->arg, sizeof(l_vstd));
 3320                 fdrop(fp, td);
 3321                 return (error);
 3322 
 3323         case LINUX_VIDIOC_ENUMINPUT:
 3324                 /*
 3325                  * The Linux struct l_v4l2_input differs only in size,
 3326                  * it has no padding at the end.
 3327                  */
 3328                 error = copyin((void *)args->arg, &vinp,
 3329                                 sizeof(struct l_v4l2_input));
 3330                 if (error != 0)
 3331                         return (error);
 3332                 error = fget(td, args->fd,
 3333                     &cap_ioctl_rights, &fp);
 3334                 if (error != 0)
 3335                         return (error);
 3336                 error = fo_ioctl(fp, VIDIOC_ENUMINPUT, (caddr_t)&vinp,
 3337                     td->td_ucred, td);
 3338                 if (error) {
 3339                         fdrop(fp, td);
 3340                         return (error);
 3341                 }
 3342                 error = copyout(&vinp, (void *)args->arg,
 3343                                 sizeof(struct l_v4l2_input));
 3344                 fdrop(fp, td);
 3345                 return (error);
 3346 
 3347         case LINUX_VIDIOC_QUERYBUF:
 3348         case LINUX_VIDIOC_QBUF:
 3349         case LINUX_VIDIOC_DQBUF:
 3350                 error = copyin((void *)args->arg, &l_vbuf, sizeof(l_vbuf));
 3351                 if (error)
 3352                         return (error);
 3353                 error = fget(td, args->fd,
 3354                     &cap_ioctl_rights, &fp);
 3355                 if (error)
 3356                         return (error);
 3357                 linux_to_bsd_v4l2_buffer(&l_vbuf, &vbuf);
 3358                 if ((args->cmd & 0xffff) == LINUX_VIDIOC_QUERYBUF)
 3359                         error = fo_ioctl(fp, VIDIOC_QUERYBUF, &vbuf,
 3360                             td->td_ucred, td);
 3361                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_QBUF)
 3362                         error = fo_ioctl(fp, VIDIOC_QBUF, &vbuf,
 3363                             td->td_ucred, td);
 3364                 else
 3365                         error = fo_ioctl(fp, VIDIOC_DQBUF, &vbuf,
 3366                             td->td_ucred, td);
 3367                 bsd_to_linux_v4l2_buffer(&vbuf, &l_vbuf);
 3368                 copyout(&l_vbuf, (void *)args->arg, sizeof(l_vbuf));
 3369                 fdrop(fp, td);
 3370                 return (error);
 3371 
 3372         /*
 3373          * XXX TODO - these need 32 -> 64 bit conversion:
 3374          * (are any of them needed for webcams?)
 3375          */
 3376         case LINUX_VIDIOC_G_FBUF:
 3377         case LINUX_VIDIOC_S_FBUF:
 3378 
 3379         case LINUX_VIDIOC_G_EXT_CTRLS:
 3380         case LINUX_VIDIOC_S_EXT_CTRLS:
 3381         case LINUX_VIDIOC_TRY_EXT_CTRLS:
 3382 
 3383         case LINUX_VIDIOC_DQEVENT:
 3384 
 3385         default:                        return (ENOIOCTL);
 3386         }
 3387 
 3388         error = sys_ioctl(td, (struct ioctl_args *)args);
 3389         return (error);
 3390 }
 3391 
 3392 /*
 3393  * Support for emulators/linux-libusb. This port uses FBSD_LUSB* macros
 3394  * instead of USB* ones. This lets us to provide correct values for cmd.
 3395  * 0xffffffe0 -- 0xffffffff range seemed to be the least collision-prone.
 3396  */
 3397 static int
 3398 linux_ioctl_fbsd_usb(struct thread *td, struct linux_ioctl_args *args)
 3399 {
 3400         int error;
 3401 
 3402         error = 0;
 3403         switch (args->cmd) {
 3404         case FBSD_LUSB_DEVICEENUMERATE:
 3405                 args->cmd = USB_DEVICEENUMERATE;
 3406                 break;
 3407         case FBSD_LUSB_DEV_QUIRK_ADD:
 3408                 args->cmd = USB_DEV_QUIRK_ADD;
 3409                 break;
 3410         case FBSD_LUSB_DEV_QUIRK_GET:
 3411                 args->cmd = USB_DEV_QUIRK_GET;
 3412                 break;
 3413         case FBSD_LUSB_DEV_QUIRK_REMOVE:
 3414                 args->cmd = USB_DEV_QUIRK_REMOVE;
 3415                 break;
 3416         case FBSD_LUSB_DO_REQUEST:
 3417                 args->cmd = USB_DO_REQUEST;
 3418                 break;
 3419         case FBSD_LUSB_FS_CLEAR_STALL_SYNC:
 3420                 args->cmd = USB_FS_CLEAR_STALL_SYNC;
 3421                 break;
 3422         case FBSD_LUSB_FS_CLOSE:
 3423                 args->cmd = USB_FS_CLOSE;
 3424                 break;
 3425         case FBSD_LUSB_FS_COMPLETE:
 3426                 args->cmd = USB_FS_COMPLETE;
 3427                 break;
 3428         case FBSD_LUSB_FS_INIT:
 3429                 args->cmd = USB_FS_INIT;
 3430                 break;
 3431         case FBSD_LUSB_FS_OPEN:
 3432                 args->cmd = USB_FS_OPEN;
 3433                 break;
 3434         case FBSD_LUSB_FS_START:
 3435                 args->cmd = USB_FS_START;
 3436                 break;
 3437         case FBSD_LUSB_FS_STOP:
 3438                 args->cmd = USB_FS_STOP;
 3439                 break;
 3440         case FBSD_LUSB_FS_UNINIT:
 3441                 args->cmd = USB_FS_UNINIT;
 3442                 break;
 3443         case FBSD_LUSB_GET_CONFIG:
 3444                 args->cmd = USB_GET_CONFIG;
 3445                 break;
 3446         case FBSD_LUSB_GET_DEVICEINFO:
 3447                 args->cmd = USB_GET_DEVICEINFO;
 3448                 break;
 3449         case FBSD_LUSB_GET_DEVICE_DESC:
 3450                 args->cmd = USB_GET_DEVICE_DESC;
 3451                 break;
 3452         case FBSD_LUSB_GET_FULL_DESC:
 3453                 args->cmd = USB_GET_FULL_DESC;
 3454                 break;
 3455         case FBSD_LUSB_GET_IFACE_DRIVER:
 3456                 args->cmd = USB_GET_IFACE_DRIVER;
 3457                 break;
 3458         case FBSD_LUSB_GET_PLUGTIME:
 3459                 args->cmd = USB_GET_PLUGTIME;
 3460                 break;
 3461         case FBSD_LUSB_GET_POWER_MODE:
 3462                 args->cmd = USB_GET_POWER_MODE;
 3463                 break;
 3464         case FBSD_LUSB_GET_REPORT_DESC:
 3465                 args->cmd = USB_GET_REPORT_DESC;
 3466                 break;
 3467         case FBSD_LUSB_GET_REPORT_ID:
 3468                 args->cmd = USB_GET_REPORT_ID;
 3469                 break;
 3470         case FBSD_LUSB_GET_TEMPLATE:
 3471                 args->cmd = USB_GET_TEMPLATE;
 3472                 break;
 3473         case FBSD_LUSB_IFACE_DRIVER_ACTIVE:
 3474                 args->cmd = USB_IFACE_DRIVER_ACTIVE;
 3475                 break;
 3476         case FBSD_LUSB_IFACE_DRIVER_DETACH:
 3477                 args->cmd = USB_IFACE_DRIVER_DETACH;
 3478                 break;
 3479         case FBSD_LUSB_QUIRK_NAME_GET:
 3480                 args->cmd = USB_QUIRK_NAME_GET;
 3481                 break;
 3482         case FBSD_LUSB_READ_DIR:
 3483                 args->cmd = USB_READ_DIR;
 3484                 break;
 3485         case FBSD_LUSB_SET_ALTINTERFACE:
 3486                 args->cmd = USB_SET_ALTINTERFACE;
 3487                 break;
 3488         case FBSD_LUSB_SET_CONFIG:
 3489                 args->cmd = USB_SET_CONFIG;
 3490                 break;
 3491         case FBSD_LUSB_SET_IMMED:
 3492                 args->cmd = USB_SET_IMMED;
 3493                 break;
 3494         case FBSD_LUSB_SET_POWER_MODE:
 3495                 args->cmd = USB_SET_POWER_MODE;
 3496                 break;
 3497         case FBSD_LUSB_SET_TEMPLATE:
 3498                 args->cmd = USB_SET_TEMPLATE;
 3499                 break;
 3500         case FBSD_LUSB_FS_OPEN_STREAM:
 3501                 args->cmd = USB_FS_OPEN_STREAM;
 3502                 break;
 3503         case FBSD_LUSB_GET_DEV_PORT_PATH:
 3504                 args->cmd = USB_GET_DEV_PORT_PATH;
 3505                 break;
 3506         case FBSD_LUSB_GET_POWER_USAGE:
 3507                 args->cmd = USB_GET_POWER_USAGE;
 3508                 break;
 3509         case FBSD_LUSB_DEVICESTATS:
 3510                 args->cmd = USB_DEVICESTATS;
 3511                 break;
 3512         default:
 3513                 error = ENOIOCTL;
 3514         }
 3515         if (error != ENOIOCTL)
 3516                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3517         return (error);
 3518 }
 3519 
 3520 /*
 3521  * Some evdev ioctls must be translated.
 3522  *  - EVIOCGMTSLOTS is a IOC_READ ioctl on Linux although it has input data
 3523  *    (must be IOC_INOUT on FreeBSD).
 3524  *  - On Linux, EVIOCGRAB, EVIOCREVOKE and EVIOCRMFF are defined as _IOW with
 3525  *    an int argument. You don't pass an int pointer to the ioctl(), however,
 3526  *    but just the int directly. On FreeBSD, they are defined as _IOWINT for
 3527  *    this to work.
 3528  */
 3529 static int
 3530 linux_ioctl_evdev(struct thread *td, struct linux_ioctl_args *args)
 3531 {
 3532         struct file *fp;
 3533         clockid_t clock;
 3534         int error;
 3535 
 3536         args->cmd = SETDIR(args->cmd);
 3537 
 3538         switch (args->cmd) {
 3539         case (EVIOCGRAB & ~IOC_DIRMASK) | IOC_IN:
 3540                 args->cmd = EVIOCGRAB;
 3541                 break;
 3542         case (EVIOCREVOKE & ~IOC_DIRMASK) | IOC_IN:
 3543                 args->cmd = EVIOCREVOKE;
 3544                 break;
 3545         case (EVIOCRMFF & ~IOC_DIRMASK) | IOC_IN:
 3546                 args->cmd = EVIOCRMFF;
 3547                 break;
 3548         case EVIOCSCLOCKID: {
 3549                 error = copyin(PTRIN(args->arg), &clock, sizeof(clock));
 3550                 if (error != 0)
 3551                         return (error);
 3552                 if (clock & ~(LINUX_IOCTL_EVDEV_CLK))
 3553                         return (EINVAL);
 3554                 error = linux_to_native_clockid(&clock, clock);
 3555                 if (error != 0)
 3556                         return (error);
 3557 
 3558                 error = fget(td, args->fd,
 3559                     &cap_ioctl_rights, &fp);
 3560                 if (error != 0)
 3561                         return (error);
 3562 
 3563                 error = fo_ioctl(fp, EVIOCSCLOCKID, &clock, td->td_ucred, td);
 3564                 fdrop(fp, td);
 3565                 return (error);
 3566         }
 3567         default:
 3568                 break;
 3569         }
 3570 
 3571         if (IOCBASECMD(args->cmd) ==
 3572             ((EVIOCGMTSLOTS(0) & ~IOC_DIRMASK) | IOC_OUT))
 3573                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
 3574 
 3575         return (sys_ioctl(td, (struct ioctl_args *)args));
 3576 }
 3577 
 3578 /*
 3579  * main ioctl syscall function
 3580  */
 3581 
 3582 int
 3583 linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
 3584 {
 3585         struct file *fp;
 3586         struct linux_ioctl_handler_element *he;
 3587         int error, cmd;
 3588 
 3589         error = fget(td, args->fd, &cap_ioctl_rights, &fp);
 3590         if (error != 0)
 3591                 return (error);
 3592         if ((fp->f_flag & (FREAD|FWRITE)) == 0) {
 3593                 fdrop(fp, td);
 3594                 return (EBADF);
 3595         }
 3596 
 3597         /* Iterate over the ioctl handlers */
 3598         cmd = args->cmd & 0xffff;
 3599         sx_slock(&linux_ioctl_sx);
 3600         mtx_lock(&Giant);
 3601 #ifdef COMPAT_LINUX32
 3602         TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
 3603                 if (cmd >= he->low && cmd <= he->high) {
 3604                         error = (*he->func)(td, args);
 3605                         if (error != ENOIOCTL) {
 3606                                 mtx_unlock(&Giant);
 3607                                 sx_sunlock(&linux_ioctl_sx);
 3608                                 fdrop(fp, td);
 3609                                 return (error);
 3610                         }
 3611                 }
 3612         }
 3613 #endif
 3614         TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
 3615                 if (cmd >= he->low && cmd <= he->high) {
 3616                         error = (*he->func)(td, args);
 3617                         if (error != ENOIOCTL) {
 3618                                 mtx_unlock(&Giant);
 3619                                 sx_sunlock(&linux_ioctl_sx);
 3620                                 fdrop(fp, td);
 3621                                 return (error);
 3622                         }
 3623                 }
 3624         }
 3625         mtx_unlock(&Giant);
 3626         sx_sunlock(&linux_ioctl_sx);
 3627         fdrop(fp, td);
 3628 
 3629         switch (args->cmd & 0xffff) {
 3630         case LINUX_BTRFS_IOC_CLONE:
 3631         case LINUX_FS_IOC_FIEMAP:
 3632                 return (ENOTSUP);
 3633 
 3634         default:
 3635                 linux_msg(td, "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
 3636                     args->fd, (int)(args->cmd & 0xffff),
 3637                     (int)(args->cmd & 0xff00) >> 8, (int)(args->cmd & 0xff));
 3638                 break;
 3639         }
 3640 
 3641         return (EINVAL);
 3642 }
 3643 
 3644 int
 3645 linux_ioctl_register_handler(struct linux_ioctl_handler *h)
 3646 {
 3647         struct linux_ioctl_handler_element *he, *cur;
 3648 
 3649         if (h == NULL || h->func == NULL)
 3650                 return (EINVAL);
 3651 
 3652         /*
 3653          * Reuse the element if the handler is already on the list, otherwise
 3654          * create a new element.
 3655          */
 3656         sx_xlock(&linux_ioctl_sx);
 3657         TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
 3658                 if (he->func == h->func)
 3659                         break;
 3660         }
 3661         if (he == NULL) {
 3662                 he = malloc(sizeof(*he),
 3663                     M_LINUX, M_WAITOK);
 3664                 he->func = h->func;
 3665         } else
 3666                 TAILQ_REMOVE(&linux_ioctl_handlers, he, list);
 3667 
 3668         /* Initialize range information. */
 3669         he->low = h->low;
 3670         he->high = h->high;
 3671         he->span = h->high - h->low + 1;
 3672 
 3673         /* Add the element to the list, sorted on span. */
 3674         TAILQ_FOREACH(cur, &linux_ioctl_handlers, list) {
 3675                 if (cur->span > he->span) {
 3676                         TAILQ_INSERT_BEFORE(cur, he, list);
 3677                         sx_xunlock(&linux_ioctl_sx);
 3678                         return (0);
 3679                 }
 3680         }
 3681         TAILQ_INSERT_TAIL(&linux_ioctl_handlers, he, list);
 3682         sx_xunlock(&linux_ioctl_sx);
 3683 
 3684         return (0);
 3685 }
 3686 
 3687 int
 3688 linux_ioctl_unregister_handler(struct linux_ioctl_handler *h)
 3689 {
 3690         struct linux_ioctl_handler_element *he;
 3691 
 3692         if (h == NULL || h->func == NULL)
 3693                 return (EINVAL);
 3694 
 3695         sx_xlock(&linux_ioctl_sx);
 3696         TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
 3697                 if (he->func == h->func) {
 3698                         TAILQ_REMOVE(&linux_ioctl_handlers, he, list);
 3699                         sx_xunlock(&linux_ioctl_sx);
 3700                         free(he, M_LINUX);
 3701                         return (0);
 3702                 }
 3703         }
 3704         sx_xunlock(&linux_ioctl_sx);
 3705 
 3706         return (EINVAL);
 3707 }
 3708 
 3709 #ifdef COMPAT_LINUX32
 3710 int
 3711 linux32_ioctl_register_handler(struct linux_ioctl_handler *h)
 3712 {
 3713         struct linux_ioctl_handler_element *he, *cur;
 3714 
 3715         if (h == NULL || h->func == NULL)
 3716                 return (EINVAL);
 3717 
 3718         /*
 3719          * Reuse the element if the handler is already on the list, otherwise
 3720          * create a new element.
 3721          */
 3722         sx_xlock(&linux_ioctl_sx);
 3723         TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
 3724                 if (he->func == h->func)
 3725                         break;
 3726         }
 3727         if (he == NULL) {
 3728                 he = malloc(sizeof(*he), M_LINUX, M_WAITOK);
 3729                 he->func = h->func;
 3730         } else
 3731                 TAILQ_REMOVE(&linux32_ioctl_handlers, he, list);
 3732 
 3733         /* Initialize range information. */
 3734         he->low = h->low;
 3735         he->high = h->high;
 3736         he->span = h->high - h->low + 1;
 3737 
 3738         /* Add the element to the list, sorted on span. */
 3739         TAILQ_FOREACH(cur, &linux32_ioctl_handlers, list) {
 3740                 if (cur->span > he->span) {
 3741                         TAILQ_INSERT_BEFORE(cur, he, list);
 3742                         sx_xunlock(&linux_ioctl_sx);
 3743                         return (0);
 3744                 }
 3745         }
 3746         TAILQ_INSERT_TAIL(&linux32_ioctl_handlers, he, list);
 3747         sx_xunlock(&linux_ioctl_sx);
 3748 
 3749         return (0);
 3750 }
 3751 
 3752 int
 3753 linux32_ioctl_unregister_handler(struct linux_ioctl_handler *h)
 3754 {
 3755         struct linux_ioctl_handler_element *he;
 3756 
 3757         if (h == NULL || h->func == NULL)
 3758                 return (EINVAL);
 3759 
 3760         sx_xlock(&linux_ioctl_sx);
 3761         TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
 3762                 if (he->func == h->func) {
 3763                         TAILQ_REMOVE(&linux32_ioctl_handlers, he, list);
 3764                         sx_xunlock(&linux_ioctl_sx);
 3765                         free(he, M_LINUX);
 3766                         return (0);
 3767                 }
 3768         }
 3769         sx_xunlock(&linux_ioctl_sx);
 3770 
 3771         return (EINVAL);
 3772 }
 3773 #endif

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