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  * Copyright (c) 1994-1995 Søren Schmidt
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer
   10  *    in this position and unchanged.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 3. The name of the author may not be used to endorse or promote products
   15  *    derived from this software without specific prior written permission
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   27  */
   28 
   29 #include "opt_compat.h"
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD: releng/10.0/sys/compat/linux/linux_ioctl.c 255219 2013-09-05 00:09:56Z pjd $");
   33 
   34 #include <sys/param.h>
   35 #include <sys/systm.h>
   36 #include <sys/sysproto.h>
   37 #include <sys/capability.h>
   38 #include <sys/cdio.h>
   39 #include <sys/dvdio.h>
   40 #include <sys/conf.h>
   41 #include <sys/disk.h>
   42 #include <sys/consio.h>
   43 #include <sys/ctype.h>
   44 #include <sys/fcntl.h>
   45 #include <sys/file.h>
   46 #include <sys/filedesc.h>
   47 #include <sys/filio.h>
   48 #include <sys/jail.h>
   49 #include <sys/kbio.h>
   50 #include <sys/kernel.h>
   51 #include <sys/linker_set.h>
   52 #include <sys/lock.h>
   53 #include <sys/malloc.h>
   54 #include <sys/proc.h>
   55 #include <sys/sbuf.h>
   56 #include <sys/socket.h>
   57 #include <sys/sockio.h>
   58 #include <sys/soundcard.h>
   59 #include <sys/stdint.h>
   60 #include <sys/sx.h>
   61 #include <sys/sysctl.h>
   62 #include <sys/tty.h>
   63 #include <sys/uio.h>
   64 #include <sys/types.h>
   65 #include <sys/mman.h>
   66 #include <sys/resourcevar.h>
   67 
   68 #include <net/if.h>
   69 #include <net/if_dl.h>
   70 #include <net/if_types.h>
   71 #include <net/vnet.h>
   72 
   73 #include <dev/usb/usb_ioctl.h>
   74 
   75 #ifdef COMPAT_LINUX32
   76 #include <machine/../linux32/linux.h>
   77 #include <machine/../linux32/linux32_proto.h>
   78 #else
   79 #include <machine/../linux/linux.h>
   80 #include <machine/../linux/linux_proto.h>
   81 #endif
   82 
   83 #include <compat/linux/linux_ioctl.h>
   84 #include <compat/linux/linux_mib.h>
   85 #include <compat/linux/linux_socket.h>
   86 #include <compat/linux/linux_util.h>
   87 
   88 #include <contrib/v4l/videodev.h>
   89 #include <compat/linux/linux_videodev_compat.h>
   90 
   91 #include <contrib/v4l/videodev2.h>
   92 #include <compat/linux/linux_videodev2_compat.h>
   93 
   94 CTASSERT(LINUX_IFNAMSIZ == IFNAMSIZ);
   95 
   96 FEATURE(linuxulator_v4l, "V4L ioctl wrapper support in the linuxulator");
   97 FEATURE(linuxulator_v4l2, "V4L2 ioctl wrapper support in the linuxulator");
   98 
   99 static linux_ioctl_function_t linux_ioctl_cdrom;
  100 static linux_ioctl_function_t linux_ioctl_vfat;
  101 static linux_ioctl_function_t linux_ioctl_console;
  102 static linux_ioctl_function_t linux_ioctl_hdio;
  103 static linux_ioctl_function_t linux_ioctl_disk;
  104 static linux_ioctl_function_t linux_ioctl_socket;
  105 static linux_ioctl_function_t linux_ioctl_sound;
  106 static linux_ioctl_function_t linux_ioctl_termio;
  107 static linux_ioctl_function_t linux_ioctl_private;
  108 static linux_ioctl_function_t linux_ioctl_drm;
  109 static linux_ioctl_function_t linux_ioctl_sg;
  110 static linux_ioctl_function_t linux_ioctl_v4l;
  111 static linux_ioctl_function_t linux_ioctl_v4l2;
  112 static linux_ioctl_function_t linux_ioctl_special;
  113 static linux_ioctl_function_t linux_ioctl_fbsd_usb;
  114 
  115 static struct linux_ioctl_handler cdrom_handler =
  116 { linux_ioctl_cdrom, LINUX_IOCTL_CDROM_MIN, LINUX_IOCTL_CDROM_MAX };
  117 static struct linux_ioctl_handler vfat_handler =
  118 { linux_ioctl_vfat, LINUX_IOCTL_VFAT_MIN, LINUX_IOCTL_VFAT_MAX };
  119 static struct linux_ioctl_handler console_handler =
  120 { linux_ioctl_console, LINUX_IOCTL_CONSOLE_MIN, LINUX_IOCTL_CONSOLE_MAX };
  121 static struct linux_ioctl_handler hdio_handler =
  122 { linux_ioctl_hdio, LINUX_IOCTL_HDIO_MIN, LINUX_IOCTL_HDIO_MAX };
  123 static struct linux_ioctl_handler disk_handler =
  124 { linux_ioctl_disk, LINUX_IOCTL_DISK_MIN, LINUX_IOCTL_DISK_MAX };
  125 static struct linux_ioctl_handler socket_handler =
  126 { linux_ioctl_socket, LINUX_IOCTL_SOCKET_MIN, LINUX_IOCTL_SOCKET_MAX };
  127 static struct linux_ioctl_handler sound_handler =
  128 { linux_ioctl_sound, LINUX_IOCTL_SOUND_MIN, LINUX_IOCTL_SOUND_MAX };
  129 static struct linux_ioctl_handler termio_handler =
  130 { linux_ioctl_termio, LINUX_IOCTL_TERMIO_MIN, LINUX_IOCTL_TERMIO_MAX };
  131 static struct linux_ioctl_handler private_handler =
  132 { linux_ioctl_private, LINUX_IOCTL_PRIVATE_MIN, LINUX_IOCTL_PRIVATE_MAX };
  133 static struct linux_ioctl_handler drm_handler =
  134 { linux_ioctl_drm, LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX };
  135 static struct linux_ioctl_handler sg_handler =
  136 { linux_ioctl_sg, LINUX_IOCTL_SG_MIN, LINUX_IOCTL_SG_MAX };
  137 static struct linux_ioctl_handler video_handler =
  138 { linux_ioctl_v4l, LINUX_IOCTL_VIDEO_MIN, LINUX_IOCTL_VIDEO_MAX };
  139 static struct linux_ioctl_handler video2_handler =
  140 { linux_ioctl_v4l2, LINUX_IOCTL_VIDEO2_MIN, LINUX_IOCTL_VIDEO2_MAX };
  141 static struct linux_ioctl_handler fbsd_usb =
  142 { linux_ioctl_fbsd_usb, FBSD_LUSB_MIN, FBSD_LUSB_MAX };
  143 
  144 DATA_SET(linux_ioctl_handler_set, cdrom_handler);
  145 DATA_SET(linux_ioctl_handler_set, vfat_handler);
  146 DATA_SET(linux_ioctl_handler_set, console_handler);
  147 DATA_SET(linux_ioctl_handler_set, hdio_handler);
  148 DATA_SET(linux_ioctl_handler_set, disk_handler);
  149 DATA_SET(linux_ioctl_handler_set, socket_handler);
  150 DATA_SET(linux_ioctl_handler_set, sound_handler);
  151 DATA_SET(linux_ioctl_handler_set, termio_handler);
  152 DATA_SET(linux_ioctl_handler_set, private_handler);
  153 DATA_SET(linux_ioctl_handler_set, drm_handler);
  154 DATA_SET(linux_ioctl_handler_set, sg_handler);
  155 DATA_SET(linux_ioctl_handler_set, video_handler);
  156 DATA_SET(linux_ioctl_handler_set, video2_handler);
  157 DATA_SET(linux_ioctl_handler_set, fbsd_usb);
  158 
  159 struct handler_element
  160 {
  161         TAILQ_ENTRY(handler_element) list;
  162         int     (*func)(struct thread *, struct linux_ioctl_args *);
  163         int     low, high, span;
  164 };
  165 
  166 static TAILQ_HEAD(, handler_element) handlers =
  167     TAILQ_HEAD_INITIALIZER(handlers);
  168 static struct sx linux_ioctl_sx;
  169 SX_SYSINIT(linux_ioctl, &linux_ioctl_sx, "linux ioctl handlers");
  170 
  171 /*
  172  * hdio related ioctls for VMWare support
  173  */
  174 
  175 struct linux_hd_geometry {
  176         u_int8_t        heads;
  177         u_int8_t        sectors;
  178         u_int16_t       cylinders;
  179         u_int32_t       start;
  180 };
  181 
  182 struct linux_hd_big_geometry {
  183         u_int8_t        heads;
  184         u_int8_t        sectors;
  185         u_int32_t       cylinders;
  186         u_int32_t       start;
  187 };
  188 
  189 static int
  190 linux_ioctl_hdio(struct thread *td, struct linux_ioctl_args *args)
  191 {
  192         cap_rights_t rights;
  193         struct file *fp;
  194         int error;
  195         u_int sectorsize, fwcylinders, fwheads, fwsectors;
  196         off_t mediasize, bytespercyl;
  197 
  198         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
  199         if (error != 0)
  200                 return (error);
  201         switch (args->cmd & 0xffff) {
  202         case LINUX_HDIO_GET_GEO:
  203         case LINUX_HDIO_GET_GEO_BIG:
  204                 error = fo_ioctl(fp, DIOCGMEDIASIZE,
  205                         (caddr_t)&mediasize, td->td_ucred, td);
  206                 if (!error)
  207                         error = fo_ioctl(fp, DIOCGSECTORSIZE,
  208                                 (caddr_t)&sectorsize, td->td_ucred, td);
  209                 if (!error)
  210                         error = fo_ioctl(fp, DIOCGFWHEADS,
  211                                 (caddr_t)&fwheads, td->td_ucred, td);
  212                 if (!error)
  213                         error = fo_ioctl(fp, DIOCGFWSECTORS,
  214                                 (caddr_t)&fwsectors, td->td_ucred, td);
  215                 /*
  216                  * XXX: DIOCGFIRSTOFFSET is not yet implemented, so
  217                  * so pretend that GEOM always says 0. This is NOT VALID
  218                  * for slices or partitions, only the per-disk raw devices.
  219                  */
  220 
  221                 fdrop(fp, td);
  222                 if (error)
  223                         return (error);
  224                 /*
  225                  * 1. Calculate the number of bytes in a cylinder,
  226                  *    given the firmware's notion of heads and sectors
  227                  *    per cylinder.
  228                  * 2. Calculate the number of cylinders, given the total
  229                  *    size of the media.
  230                  * All internal calculations should have 64-bit precision.
  231                  */
  232                 bytespercyl = (off_t) sectorsize * fwheads * fwsectors;
  233                 fwcylinders = mediasize / bytespercyl;
  234 #if defined(DEBUG)
  235                 linux_msg(td, "HDIO_GET_GEO: mediasize %jd, c/h/s %d/%d/%d, "
  236                           "bpc %jd",
  237                           (intmax_t)mediasize, fwcylinders, fwheads, fwsectors, 
  238                           (intmax_t)bytespercyl);
  239 #endif
  240                 if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO) {
  241                         struct linux_hd_geometry hdg;
  242 
  243                         hdg.cylinders = fwcylinders;
  244                         hdg.heads = fwheads;
  245                         hdg.sectors = fwsectors;
  246                         hdg.start = 0;
  247                         error = copyout(&hdg, (void *)args->arg, sizeof(hdg));
  248                 } else if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO_BIG) {
  249                         struct linux_hd_big_geometry hdbg;
  250 
  251                         hdbg.cylinders = fwcylinders;
  252                         hdbg.heads = fwheads;
  253                         hdbg.sectors = fwsectors;
  254                         hdbg.start = 0;
  255                         error = copyout(&hdbg, (void *)args->arg, sizeof(hdbg));
  256                 }
  257                 return (error);
  258                 break;
  259         default:
  260                 /* XXX */
  261                 linux_msg(td,
  262                         "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
  263                         args->fd, (int)(args->cmd & 0xffff),
  264                         (int)(args->cmd & 0xff00) >> 8,
  265                         (int)(args->cmd & 0xff));
  266                 break;
  267         }
  268         fdrop(fp, td);
  269         return (ENOIOCTL);
  270 }
  271 
  272 static int
  273 linux_ioctl_disk(struct thread *td, struct linux_ioctl_args *args)
  274 {
  275         cap_rights_t rights;
  276         struct file *fp;
  277         int error;
  278         u_int sectorsize;
  279         off_t mediasize;
  280 
  281         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
  282         if (error != 0)
  283                 return (error);
  284         switch (args->cmd & 0xffff) {
  285         case LINUX_BLKGETSIZE:
  286                 error = fo_ioctl(fp, DIOCGSECTORSIZE,
  287                     (caddr_t)&sectorsize, td->td_ucred, td);
  288                 if (!error)
  289                         error = fo_ioctl(fp, DIOCGMEDIASIZE,
  290                             (caddr_t)&mediasize, td->td_ucred, td);
  291                 fdrop(fp, td);
  292                 if (error)
  293                         return (error);
  294                 sectorsize = mediasize / sectorsize;
  295                 /*
  296                  * XXX: How do we know we return the right size of integer ?
  297                  */
  298                 return (copyout(&sectorsize, (void *)args->arg,
  299                     sizeof(sectorsize)));
  300                 break;
  301         }
  302         fdrop(fp, td);
  303         return (ENOIOCTL);
  304 }
  305 
  306 /*
  307  * termio related ioctls
  308  */
  309 
  310 struct linux_termio {
  311         unsigned short c_iflag;
  312         unsigned short c_oflag;
  313         unsigned short c_cflag;
  314         unsigned short c_lflag;
  315         unsigned char c_line;
  316         unsigned char c_cc[LINUX_NCC];
  317 };
  318 
  319 struct linux_termios {
  320         unsigned int c_iflag;
  321         unsigned int c_oflag;
  322         unsigned int c_cflag;
  323         unsigned int c_lflag;
  324         unsigned char c_line;
  325         unsigned char c_cc[LINUX_NCCS];
  326 };
  327 
  328 struct linux_winsize {
  329         unsigned short ws_row, ws_col;
  330         unsigned short ws_xpixel, ws_ypixel;
  331 };
  332 
  333 struct speedtab {
  334         int sp_speed;                   /* Speed. */
  335         int sp_code;                    /* Code. */
  336 };
  337 
  338 static struct speedtab sptab[] = {
  339         { B0, LINUX_B0 }, { B50, LINUX_B50 },
  340         { B75, LINUX_B75 }, { B110, LINUX_B110 },
  341         { B134, LINUX_B134 }, { B150, LINUX_B150 },
  342         { B200, LINUX_B200 }, { B300, LINUX_B300 },
  343         { B600, LINUX_B600 }, { B1200, LINUX_B1200 },
  344         { B1800, LINUX_B1800 }, { B2400, LINUX_B2400 },
  345         { B4800, LINUX_B4800 }, { B9600, LINUX_B9600 },
  346         { B19200, LINUX_B19200 }, { B38400, LINUX_B38400 },
  347         { B57600, LINUX_B57600 }, { B115200, LINUX_B115200 },
  348         {-1, -1 }
  349 };
  350 
  351 struct linux_serial_struct {
  352         int     type;
  353         int     line;
  354         int     port;
  355         int     irq;
  356         int     flags;
  357         int     xmit_fifo_size;
  358         int     custom_divisor;
  359         int     baud_base;
  360         unsigned short close_delay;
  361         char    reserved_char[2];
  362         int     hub6;
  363         unsigned short closing_wait;
  364         unsigned short closing_wait2;
  365         int     reserved[4];
  366 };
  367 
  368 static int
  369 linux_to_bsd_speed(int code, struct speedtab *table)
  370 {
  371         for ( ; table->sp_code != -1; table++)
  372                 if (table->sp_code == code)
  373                         return (table->sp_speed);
  374         return -1;
  375 }
  376 
  377 static int
  378 bsd_to_linux_speed(int speed, struct speedtab *table)
  379 {
  380         for ( ; table->sp_speed != -1; table++)
  381                 if (table->sp_speed == speed)
  382                         return (table->sp_code);
  383         return -1;
  384 }
  385 
  386 static void
  387 bsd_to_linux_termios(struct termios *bios, struct linux_termios *lios)
  388 {
  389         int i;
  390 
  391 #ifdef DEBUG
  392         if (ldebug(ioctl)) {
  393                 printf("LINUX: BSD termios structure (input):\n");
  394                 printf("i=%08x o=%08x c=%08x l=%08x ispeed=%d ospeed=%d\n",
  395                     bios->c_iflag, bios->c_oflag, bios->c_cflag, bios->c_lflag,
  396                     bios->c_ispeed, bios->c_ospeed);
  397                 printf("c_cc ");
  398                 for (i=0; i<NCCS; i++)
  399                         printf("%02x ", bios->c_cc[i]);
  400                 printf("\n");
  401         }
  402 #endif
  403 
  404         lios->c_iflag = 0;
  405         if (bios->c_iflag & IGNBRK)
  406                 lios->c_iflag |= LINUX_IGNBRK;
  407         if (bios->c_iflag & BRKINT)
  408                 lios->c_iflag |= LINUX_BRKINT;
  409         if (bios->c_iflag & IGNPAR)
  410                 lios->c_iflag |= LINUX_IGNPAR;
  411         if (bios->c_iflag & PARMRK)
  412                 lios->c_iflag |= LINUX_PARMRK;
  413         if (bios->c_iflag & INPCK)
  414                 lios->c_iflag |= LINUX_INPCK;
  415         if (bios->c_iflag & ISTRIP)
  416                 lios->c_iflag |= LINUX_ISTRIP;
  417         if (bios->c_iflag & INLCR)
  418                 lios->c_iflag |= LINUX_INLCR;
  419         if (bios->c_iflag & IGNCR)
  420                 lios->c_iflag |= LINUX_IGNCR;
  421         if (bios->c_iflag & ICRNL)
  422                 lios->c_iflag |= LINUX_ICRNL;
  423         if (bios->c_iflag & IXON)
  424                 lios->c_iflag |= LINUX_IXON;
  425         if (bios->c_iflag & IXANY)
  426                 lios->c_iflag |= LINUX_IXANY;
  427         if (bios->c_iflag & IXOFF)
  428                 lios->c_iflag |= LINUX_IXOFF;
  429         if (bios->c_iflag & IMAXBEL)
  430                 lios->c_iflag |= LINUX_IMAXBEL;
  431 
  432         lios->c_oflag = 0;
  433         if (bios->c_oflag & OPOST)
  434                 lios->c_oflag |= LINUX_OPOST;
  435         if (bios->c_oflag & ONLCR)
  436                 lios->c_oflag |= LINUX_ONLCR;
  437         if (bios->c_oflag & TAB3)
  438                 lios->c_oflag |= LINUX_XTABS;
  439 
  440         lios->c_cflag = bsd_to_linux_speed(bios->c_ispeed, sptab);
  441         lios->c_cflag |= (bios->c_cflag & CSIZE) >> 4;
  442         if (bios->c_cflag & CSTOPB)
  443                 lios->c_cflag |= LINUX_CSTOPB;
  444         if (bios->c_cflag & CREAD)
  445                 lios->c_cflag |= LINUX_CREAD;
  446         if (bios->c_cflag & PARENB)
  447                 lios->c_cflag |= LINUX_PARENB;
  448         if (bios->c_cflag & PARODD)
  449                 lios->c_cflag |= LINUX_PARODD;
  450         if (bios->c_cflag & HUPCL)
  451                 lios->c_cflag |= LINUX_HUPCL;
  452         if (bios->c_cflag & CLOCAL)
  453                 lios->c_cflag |= LINUX_CLOCAL;
  454         if (bios->c_cflag & CRTSCTS)
  455                 lios->c_cflag |= LINUX_CRTSCTS;
  456 
  457         lios->c_lflag = 0;
  458         if (bios->c_lflag & ISIG)
  459                 lios->c_lflag |= LINUX_ISIG;
  460         if (bios->c_lflag & ICANON)
  461                 lios->c_lflag |= LINUX_ICANON;
  462         if (bios->c_lflag & ECHO)
  463                 lios->c_lflag |= LINUX_ECHO;
  464         if (bios->c_lflag & ECHOE)
  465                 lios->c_lflag |= LINUX_ECHOE;
  466         if (bios->c_lflag & ECHOK)
  467                 lios->c_lflag |= LINUX_ECHOK;
  468         if (bios->c_lflag & ECHONL)
  469                 lios->c_lflag |= LINUX_ECHONL;
  470         if (bios->c_lflag & NOFLSH)
  471                 lios->c_lflag |= LINUX_NOFLSH;
  472         if (bios->c_lflag & TOSTOP)
  473                 lios->c_lflag |= LINUX_TOSTOP;
  474         if (bios->c_lflag & ECHOCTL)
  475                 lios->c_lflag |= LINUX_ECHOCTL;
  476         if (bios->c_lflag & ECHOPRT)
  477                 lios->c_lflag |= LINUX_ECHOPRT;
  478         if (bios->c_lflag & ECHOKE)
  479                 lios->c_lflag |= LINUX_ECHOKE;
  480         if (bios->c_lflag & FLUSHO)
  481                 lios->c_lflag |= LINUX_FLUSHO;
  482         if (bios->c_lflag & PENDIN)
  483                 lios->c_lflag |= LINUX_PENDIN;
  484         if (bios->c_lflag & IEXTEN)
  485                 lios->c_lflag |= LINUX_IEXTEN;
  486 
  487         for (i=0; i<LINUX_NCCS; i++)
  488                 lios->c_cc[i] = LINUX_POSIX_VDISABLE;
  489         lios->c_cc[LINUX_VINTR] = bios->c_cc[VINTR];
  490         lios->c_cc[LINUX_VQUIT] = bios->c_cc[VQUIT];
  491         lios->c_cc[LINUX_VERASE] = bios->c_cc[VERASE];
  492         lios->c_cc[LINUX_VKILL] = bios->c_cc[VKILL];
  493         lios->c_cc[LINUX_VEOF] = bios->c_cc[VEOF];
  494         lios->c_cc[LINUX_VEOL] = bios->c_cc[VEOL];
  495         lios->c_cc[LINUX_VMIN] = bios->c_cc[VMIN];
  496         lios->c_cc[LINUX_VTIME] = bios->c_cc[VTIME];
  497         lios->c_cc[LINUX_VEOL2] = bios->c_cc[VEOL2];
  498         lios->c_cc[LINUX_VSUSP] = bios->c_cc[VSUSP];
  499         lios->c_cc[LINUX_VSTART] = bios->c_cc[VSTART];
  500         lios->c_cc[LINUX_VSTOP] = bios->c_cc[VSTOP];
  501         lios->c_cc[LINUX_VREPRINT] = bios->c_cc[VREPRINT];
  502         lios->c_cc[LINUX_VDISCARD] = bios->c_cc[VDISCARD];
  503         lios->c_cc[LINUX_VWERASE] = bios->c_cc[VWERASE];
  504         lios->c_cc[LINUX_VLNEXT] = bios->c_cc[VLNEXT];
  505 
  506         for (i=0; i<LINUX_NCCS; i++) {
  507                 if (i != LINUX_VMIN && i != LINUX_VTIME &&
  508                     lios->c_cc[i] == _POSIX_VDISABLE)
  509                         lios->c_cc[i] = LINUX_POSIX_VDISABLE;
  510         }
  511         lios->c_line = 0;
  512 
  513 #ifdef DEBUG
  514         if (ldebug(ioctl)) {
  515                 printf("LINUX: LINUX termios structure (output):\n");
  516                 printf("i=%08x o=%08x c=%08x l=%08x line=%d\n",
  517                     lios->c_iflag, lios->c_oflag, lios->c_cflag,
  518                     lios->c_lflag, (int)lios->c_line);
  519                 printf("c_cc ");
  520                 for (i=0; i<LINUX_NCCS; i++)
  521                         printf("%02x ", lios->c_cc[i]);
  522                 printf("\n");
  523         }
  524 #endif
  525 }
  526 
  527 static void
  528 linux_to_bsd_termios(struct linux_termios *lios, struct termios *bios)
  529 {
  530         int i;
  531 
  532 #ifdef DEBUG
  533         if (ldebug(ioctl)) {
  534                 printf("LINUX: LINUX termios structure (input):\n");
  535                 printf("i=%08x o=%08x c=%08x l=%08x line=%d\n",
  536                     lios->c_iflag, lios->c_oflag, lios->c_cflag,
  537                     lios->c_lflag, (int)lios->c_line);
  538                 printf("c_cc ");
  539                 for (i=0; i<LINUX_NCCS; i++)
  540                         printf("%02x ", lios->c_cc[i]);
  541                 printf("\n");
  542         }
  543 #endif
  544 
  545         bios->c_iflag = 0;
  546         if (lios->c_iflag & LINUX_IGNBRK)
  547                 bios->c_iflag |= IGNBRK;
  548         if (lios->c_iflag & LINUX_BRKINT)
  549                 bios->c_iflag |= BRKINT;
  550         if (lios->c_iflag & LINUX_IGNPAR)
  551                 bios->c_iflag |= IGNPAR;
  552         if (lios->c_iflag & LINUX_PARMRK)
  553                 bios->c_iflag |= PARMRK;
  554         if (lios->c_iflag & LINUX_INPCK)
  555                 bios->c_iflag |= INPCK;
  556         if (lios->c_iflag & LINUX_ISTRIP)
  557                 bios->c_iflag |= ISTRIP;
  558         if (lios->c_iflag & LINUX_INLCR)
  559                 bios->c_iflag |= INLCR;
  560         if (lios->c_iflag & LINUX_IGNCR)
  561                 bios->c_iflag |= IGNCR;
  562         if (lios->c_iflag & LINUX_ICRNL)
  563                 bios->c_iflag |= ICRNL;
  564         if (lios->c_iflag & LINUX_IXON)
  565                 bios->c_iflag |= IXON;
  566         if (lios->c_iflag & LINUX_IXANY)
  567                 bios->c_iflag |= IXANY;
  568         if (lios->c_iflag & LINUX_IXOFF)
  569                 bios->c_iflag |= IXOFF;
  570         if (lios->c_iflag & LINUX_IMAXBEL)
  571                 bios->c_iflag |= IMAXBEL;
  572 
  573         bios->c_oflag = 0;
  574         if (lios->c_oflag & LINUX_OPOST)
  575                 bios->c_oflag |= OPOST;
  576         if (lios->c_oflag & LINUX_ONLCR)
  577                 bios->c_oflag |= ONLCR;
  578         if (lios->c_oflag & LINUX_XTABS)
  579                 bios->c_oflag |= TAB3;
  580 
  581         bios->c_cflag = (lios->c_cflag & LINUX_CSIZE) << 4;
  582         if (lios->c_cflag & LINUX_CSTOPB)
  583                 bios->c_cflag |= CSTOPB;
  584         if (lios->c_cflag & LINUX_CREAD)
  585                 bios->c_cflag |= CREAD;
  586         if (lios->c_cflag & LINUX_PARENB)
  587                 bios->c_cflag |= PARENB;
  588         if (lios->c_cflag & LINUX_PARODD)
  589                 bios->c_cflag |= PARODD;
  590         if (lios->c_cflag & LINUX_HUPCL)
  591                 bios->c_cflag |= HUPCL;
  592         if (lios->c_cflag & LINUX_CLOCAL)
  593                 bios->c_cflag |= CLOCAL;
  594         if (lios->c_cflag & LINUX_CRTSCTS)
  595                 bios->c_cflag |= CRTSCTS;
  596 
  597         bios->c_lflag = 0;
  598         if (lios->c_lflag & LINUX_ISIG)
  599                 bios->c_lflag |= ISIG;
  600         if (lios->c_lflag & LINUX_ICANON)
  601                 bios->c_lflag |= ICANON;
  602         if (lios->c_lflag & LINUX_ECHO)
  603                 bios->c_lflag |= ECHO;
  604         if (lios->c_lflag & LINUX_ECHOE)
  605                 bios->c_lflag |= ECHOE;
  606         if (lios->c_lflag & LINUX_ECHOK)
  607                 bios->c_lflag |= ECHOK;
  608         if (lios->c_lflag & LINUX_ECHONL)
  609                 bios->c_lflag |= ECHONL;
  610         if (lios->c_lflag & LINUX_NOFLSH)
  611                 bios->c_lflag |= NOFLSH;
  612         if (lios->c_lflag & LINUX_TOSTOP)
  613                 bios->c_lflag |= TOSTOP;
  614         if (lios->c_lflag & LINUX_ECHOCTL)
  615                 bios->c_lflag |= ECHOCTL;
  616         if (lios->c_lflag & LINUX_ECHOPRT)
  617                 bios->c_lflag |= ECHOPRT;
  618         if (lios->c_lflag & LINUX_ECHOKE)
  619                 bios->c_lflag |= ECHOKE;
  620         if (lios->c_lflag & LINUX_FLUSHO)
  621                 bios->c_lflag |= FLUSHO;
  622         if (lios->c_lflag & LINUX_PENDIN)
  623                 bios->c_lflag |= PENDIN;
  624         if (lios->c_lflag & LINUX_IEXTEN)
  625                 bios->c_lflag |= IEXTEN;
  626 
  627         for (i=0; i<NCCS; i++)
  628                 bios->c_cc[i] = _POSIX_VDISABLE;
  629         bios->c_cc[VINTR] = lios->c_cc[LINUX_VINTR];
  630         bios->c_cc[VQUIT] = lios->c_cc[LINUX_VQUIT];
  631         bios->c_cc[VERASE] = lios->c_cc[LINUX_VERASE];
  632         bios->c_cc[VKILL] = lios->c_cc[LINUX_VKILL];
  633         bios->c_cc[VEOF] = lios->c_cc[LINUX_VEOF];
  634         bios->c_cc[VEOL] = lios->c_cc[LINUX_VEOL];
  635         bios->c_cc[VMIN] = lios->c_cc[LINUX_VMIN];
  636         bios->c_cc[VTIME] = lios->c_cc[LINUX_VTIME];
  637         bios->c_cc[VEOL2] = lios->c_cc[LINUX_VEOL2];
  638         bios->c_cc[VSUSP] = lios->c_cc[LINUX_VSUSP];
  639         bios->c_cc[VSTART] = lios->c_cc[LINUX_VSTART];
  640         bios->c_cc[VSTOP] = lios->c_cc[LINUX_VSTOP];
  641         bios->c_cc[VREPRINT] = lios->c_cc[LINUX_VREPRINT];
  642         bios->c_cc[VDISCARD] = lios->c_cc[LINUX_VDISCARD];
  643         bios->c_cc[VWERASE] = lios->c_cc[LINUX_VWERASE];
  644         bios->c_cc[VLNEXT] = lios->c_cc[LINUX_VLNEXT];
  645 
  646         for (i=0; i<NCCS; i++) {
  647                 if (i != VMIN && i != VTIME &&
  648                     bios->c_cc[i] == LINUX_POSIX_VDISABLE)
  649                         bios->c_cc[i] = _POSIX_VDISABLE;
  650         }
  651 
  652         bios->c_ispeed = bios->c_ospeed =
  653             linux_to_bsd_speed(lios->c_cflag & LINUX_CBAUD, sptab);
  654 
  655 #ifdef DEBUG
  656         if (ldebug(ioctl)) {
  657                 printf("LINUX: BSD termios structure (output):\n");
  658                 printf("i=%08x o=%08x c=%08x l=%08x ispeed=%d ospeed=%d\n",
  659                     bios->c_iflag, bios->c_oflag, bios->c_cflag, bios->c_lflag,
  660                     bios->c_ispeed, bios->c_ospeed);
  661                 printf("c_cc ");
  662                 for (i=0; i<NCCS; i++)
  663                         printf("%02x ", bios->c_cc[i]);
  664                 printf("\n");
  665         }
  666 #endif
  667 }
  668 
  669 static void
  670 bsd_to_linux_termio(struct termios *bios, struct linux_termio *lio)
  671 {
  672         struct linux_termios lios;
  673 
  674         bsd_to_linux_termios(bios, &lios);
  675         lio->c_iflag = lios.c_iflag;
  676         lio->c_oflag = lios.c_oflag;
  677         lio->c_cflag = lios.c_cflag;
  678         lio->c_lflag = lios.c_lflag;
  679         lio->c_line  = lios.c_line;
  680         memcpy(lio->c_cc, lios.c_cc, LINUX_NCC);
  681 }
  682 
  683 static void
  684 linux_to_bsd_termio(struct linux_termio *lio, struct termios *bios)
  685 {
  686         struct linux_termios lios;
  687         int i;
  688 
  689         lios.c_iflag = lio->c_iflag;
  690         lios.c_oflag = lio->c_oflag;
  691         lios.c_cflag = lio->c_cflag;
  692         lios.c_lflag = lio->c_lflag;
  693         for (i=LINUX_NCC; i<LINUX_NCCS; i++)
  694                 lios.c_cc[i] = LINUX_POSIX_VDISABLE;
  695         memcpy(lios.c_cc, lio->c_cc, LINUX_NCC);
  696         linux_to_bsd_termios(&lios, bios);
  697 }
  698 
  699 static int
  700 linux_ioctl_termio(struct thread *td, struct linux_ioctl_args *args)
  701 {
  702         struct termios bios;
  703         struct linux_termios lios;
  704         struct linux_termio lio;
  705         cap_rights_t rights;
  706         struct file *fp;
  707         int error;
  708 
  709         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
  710         if (error != 0)
  711                 return (error);
  712 
  713         switch (args->cmd & 0xffff) {
  714 
  715         case LINUX_TCGETS:
  716                 error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
  717                     td);
  718                 if (error)
  719                         break;
  720                 bsd_to_linux_termios(&bios, &lios);
  721                 error = copyout(&lios, (void *)args->arg, sizeof(lios));
  722                 break;
  723 
  724         case LINUX_TCSETS:
  725                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  726                 if (error)
  727                         break;
  728                 linux_to_bsd_termios(&lios, &bios);
  729                 error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
  730                     td));
  731                 break;
  732 
  733         case LINUX_TCSETSW:
  734                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  735                 if (error)
  736                         break;
  737                 linux_to_bsd_termios(&lios, &bios);
  738                 error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
  739                     td));
  740                 break;
  741 
  742         case LINUX_TCSETSF:
  743                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  744                 if (error)
  745                         break;
  746                 linux_to_bsd_termios(&lios, &bios);
  747                 error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
  748                     td));
  749                 break;
  750 
  751         case LINUX_TCGETA:
  752                 error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
  753                     td);
  754                 if (error)
  755                         break;
  756                 bsd_to_linux_termio(&bios, &lio);
  757                 error = (copyout(&lio, (void *)args->arg, sizeof(lio)));
  758                 break;
  759 
  760         case LINUX_TCSETA:
  761                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  762                 if (error)
  763                         break;
  764                 linux_to_bsd_termio(&lio, &bios);
  765                 error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
  766                     td));
  767                 break;
  768 
  769         case LINUX_TCSETAW:
  770                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  771                 if (error)
  772                         break;
  773                 linux_to_bsd_termio(&lio, &bios);
  774                 error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
  775                     td));
  776                 break;
  777 
  778         case LINUX_TCSETAF:
  779                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  780                 if (error)
  781                         break;
  782                 linux_to_bsd_termio(&lio, &bios);
  783                 error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
  784                     td));
  785                 break;
  786 
  787         /* LINUX_TCSBRK */
  788 
  789         case LINUX_TCXONC: {
  790                 switch (args->arg) {
  791                 case LINUX_TCOOFF:
  792                         args->cmd = TIOCSTOP;
  793                         break;
  794                 case LINUX_TCOON:
  795                         args->cmd = TIOCSTART;
  796                         break;
  797                 case LINUX_TCIOFF:
  798                 case LINUX_TCION: {
  799                         int c;
  800                         struct write_args wr;
  801                         error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios,
  802                             td->td_ucred, td);
  803                         if (error)
  804                                 break;
  805                         fdrop(fp, td);
  806                         c = (args->arg == LINUX_TCIOFF) ? VSTOP : VSTART;
  807                         c = bios.c_cc[c];
  808                         if (c != _POSIX_VDISABLE) {
  809                                 wr.fd = args->fd;
  810                                 wr.buf = &c;
  811                                 wr.nbyte = sizeof(c);
  812                                 return (sys_write(td, &wr));
  813                         } else
  814                                 return (0);
  815                 }
  816                 default:
  817                         fdrop(fp, td);
  818                         return (EINVAL);
  819                 }
  820                 args->arg = 0;
  821                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  822                 break;
  823         }
  824 
  825         case LINUX_TCFLSH: {
  826                 int val;
  827                 switch (args->arg) {
  828                 case LINUX_TCIFLUSH:
  829                         val = FREAD;
  830                         break;
  831                 case LINUX_TCOFLUSH:
  832                         val = FWRITE;
  833                         break;
  834                 case LINUX_TCIOFLUSH:
  835                         val = FREAD | FWRITE;
  836                         break;
  837                 default:
  838                         fdrop(fp, td);
  839                         return (EINVAL);
  840                 }
  841                 error = (fo_ioctl(fp,TIOCFLUSH,(caddr_t)&val,td->td_ucred,td));
  842                 break;
  843         }
  844 
  845         case LINUX_TIOCEXCL:
  846                 args->cmd = TIOCEXCL;
  847                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  848                 break;
  849 
  850         case LINUX_TIOCNXCL:
  851                 args->cmd = TIOCNXCL;
  852                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  853                 break;
  854 
  855         case LINUX_TIOCSCTTY:
  856                 args->cmd = TIOCSCTTY;
  857                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  858                 break;
  859 
  860         case LINUX_TIOCGPGRP:
  861                 args->cmd = TIOCGPGRP;
  862                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  863                 break;
  864 
  865         case LINUX_TIOCSPGRP:
  866                 args->cmd = TIOCSPGRP;
  867                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  868                 break;
  869 
  870         /* LINUX_TIOCOUTQ */
  871         /* LINUX_TIOCSTI */
  872 
  873         case LINUX_TIOCGWINSZ:
  874                 args->cmd = TIOCGWINSZ;
  875                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  876                 break;
  877 
  878         case LINUX_TIOCSWINSZ:
  879                 args->cmd = TIOCSWINSZ;
  880                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  881                 break;
  882 
  883         case LINUX_TIOCMGET:
  884                 args->cmd = TIOCMGET;
  885                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  886                 break;
  887 
  888         case LINUX_TIOCMBIS:
  889                 args->cmd = TIOCMBIS;
  890                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  891                 break;
  892 
  893         case LINUX_TIOCMBIC:
  894                 args->cmd = TIOCMBIC;
  895                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  896                 break;
  897 
  898         case LINUX_TIOCMSET:
  899                 args->cmd = TIOCMSET;
  900                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  901                 break;
  902 
  903         /* TIOCGSOFTCAR */
  904         /* TIOCSSOFTCAR */
  905 
  906         case LINUX_FIONREAD: /* LINUX_TIOCINQ */
  907                 args->cmd = FIONREAD;
  908                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  909                 break;
  910 
  911         /* LINUX_TIOCLINUX */
  912 
  913         case LINUX_TIOCCONS:
  914                 args->cmd = TIOCCONS;
  915                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  916                 break;
  917 
  918         case LINUX_TIOCGSERIAL: {
  919                 struct linux_serial_struct lss;
  920                 lss.type = LINUX_PORT_16550A;
  921                 lss.flags = 0;
  922                 lss.close_delay = 0;
  923                 error = copyout(&lss, (void *)args->arg, sizeof(lss));
  924                 break;
  925         }
  926 
  927         case LINUX_TIOCSSERIAL: {
  928                 struct linux_serial_struct lss;
  929                 error = copyin((void *)args->arg, &lss, sizeof(lss));
  930                 if (error)
  931                         break;
  932                 /* XXX - It really helps to have an implementation that
  933                  * does nothing. NOT!
  934                  */
  935                 error = 0;
  936                 break;
  937         }
  938 
  939         case LINUX_TIOCPKT:
  940                 args->cmd = TIOCPKT;
  941                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  942                 break;
  943 
  944         case LINUX_FIONBIO:
  945                 args->cmd = FIONBIO;
  946                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  947                 break;
  948 
  949         case LINUX_TIOCNOTTY:
  950                 args->cmd = TIOCNOTTY;
  951                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  952                 break;
  953 
  954         case LINUX_TIOCSETD: {
  955                 int line;
  956                 switch (args->arg) {
  957                 case LINUX_N_TTY:
  958                         line = TTYDISC;
  959                         break;
  960                 case LINUX_N_SLIP:
  961                         line = SLIPDISC;
  962                         break;
  963                 case LINUX_N_PPP:
  964                         line = PPPDISC;
  965                         break;
  966                 default:
  967                         fdrop(fp, td);
  968                         return (EINVAL);
  969                 }
  970                 error = (fo_ioctl(fp, TIOCSETD, (caddr_t)&line, td->td_ucred,
  971                     td));
  972                 break;
  973         }
  974 
  975         case LINUX_TIOCGETD: {
  976                 int linux_line;
  977                 int bsd_line = TTYDISC;
  978                 error = fo_ioctl(fp, TIOCGETD, (caddr_t)&bsd_line,
  979                     td->td_ucred, td);
  980                 if (error)
  981                         return (error);
  982                 switch (bsd_line) {
  983                 case TTYDISC:
  984                         linux_line = LINUX_N_TTY;
  985                         break;
  986                 case SLIPDISC:
  987                         linux_line = LINUX_N_SLIP;
  988                         break;
  989                 case PPPDISC:
  990                         linux_line = LINUX_N_PPP;
  991                         break;
  992                 default:
  993                         fdrop(fp, td);
  994                         return (EINVAL);
  995                 }
  996                 error = (copyout(&linux_line, (void *)args->arg, sizeof(int)));
  997                 break;
  998         }
  999 
 1000         /* LINUX_TCSBRKP */
 1001         /* LINUX_TIOCTTYGSTRUCT */
 1002 
 1003         case LINUX_FIONCLEX:
 1004                 args->cmd = FIONCLEX;
 1005                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1006                 break;
 1007 
 1008         case LINUX_FIOCLEX:
 1009                 args->cmd = FIOCLEX;
 1010                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1011                 break;
 1012 
 1013         case LINUX_FIOASYNC:
 1014                 args->cmd = FIOASYNC;
 1015                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1016                 break;
 1017 
 1018         /* LINUX_TIOCSERCONFIG */
 1019         /* LINUX_TIOCSERGWILD */
 1020         /* LINUX_TIOCSERSWILD */
 1021         /* LINUX_TIOCGLCKTRMIOS */
 1022         /* LINUX_TIOCSLCKTRMIOS */
 1023 
 1024         case LINUX_TIOCSBRK:
 1025                 args->cmd = TIOCSBRK;
 1026                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1027                 break;
 1028 
 1029         case LINUX_TIOCCBRK:
 1030                 args->cmd = TIOCCBRK;
 1031                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1032                 break;
 1033         case LINUX_TIOCGPTN: {
 1034                 int nb;
 1035                 
 1036                 error = fo_ioctl(fp, TIOCGPTN, (caddr_t)&nb, td->td_ucred, td);
 1037                 if (!error)
 1038                         error = copyout(&nb, (void *)args->arg,
 1039                             sizeof(int));
 1040                 break;
 1041         }
 1042         case LINUX_TIOCSPTLCK:
 1043                 /* Our unlockpt() does nothing. */
 1044                 error = 0;
 1045                 break;
 1046         default:
 1047                 error = ENOIOCTL;
 1048                 break;
 1049         }
 1050 
 1051         fdrop(fp, td);
 1052         return (error);
 1053 }
 1054 
 1055 /*
 1056  * CDROM related ioctls
 1057  */
 1058 
 1059 struct linux_cdrom_msf
 1060 {
 1061         u_char  cdmsf_min0;
 1062         u_char  cdmsf_sec0;
 1063         u_char  cdmsf_frame0;
 1064         u_char  cdmsf_min1;
 1065         u_char  cdmsf_sec1;
 1066         u_char  cdmsf_frame1;
 1067 };
 1068 
 1069 struct linux_cdrom_tochdr
 1070 {
 1071         u_char  cdth_trk0;
 1072         u_char  cdth_trk1;
 1073 };
 1074 
 1075 union linux_cdrom_addr
 1076 {
 1077         struct {
 1078                 u_char  minute;
 1079                 u_char  second;
 1080                 u_char  frame;
 1081         } msf;
 1082         int     lba;
 1083 };
 1084 
 1085 struct linux_cdrom_tocentry
 1086 {
 1087         u_char  cdte_track;
 1088         u_char  cdte_adr:4;
 1089         u_char  cdte_ctrl:4;
 1090         u_char  cdte_format;
 1091         union linux_cdrom_addr cdte_addr;
 1092         u_char  cdte_datamode;
 1093 };
 1094 
 1095 struct linux_cdrom_subchnl
 1096 {
 1097         u_char  cdsc_format;
 1098         u_char  cdsc_audiostatus;
 1099         u_char  cdsc_adr:4;
 1100         u_char  cdsc_ctrl:4;
 1101         u_char  cdsc_trk;
 1102         u_char  cdsc_ind;
 1103         union linux_cdrom_addr cdsc_absaddr;
 1104         union linux_cdrom_addr cdsc_reladdr;
 1105 };
 1106 
 1107 struct l_cdrom_read_audio {
 1108         union linux_cdrom_addr addr;
 1109         u_char          addr_format;
 1110         l_int           nframes;
 1111         u_char          *buf;
 1112 };
 1113 
 1114 struct l_dvd_layer {
 1115         u_char          book_version:4;
 1116         u_char          book_type:4;
 1117         u_char          min_rate:4;
 1118         u_char          disc_size:4;
 1119         u_char          layer_type:4;
 1120         u_char          track_path:1;
 1121         u_char          nlayers:2;
 1122         u_char          track_density:4;
 1123         u_char          linear_density:4;
 1124         u_char          bca:1;
 1125         u_int32_t       start_sector;
 1126         u_int32_t       end_sector;
 1127         u_int32_t       end_sector_l0;
 1128 };
 1129 
 1130 struct l_dvd_physical {
 1131         u_char          type;
 1132         u_char          layer_num;
 1133         struct l_dvd_layer layer[4];
 1134 };
 1135 
 1136 struct l_dvd_copyright {
 1137         u_char          type;
 1138         u_char          layer_num;
 1139         u_char          cpst;
 1140         u_char          rmi;
 1141 };
 1142 
 1143 struct l_dvd_disckey {
 1144         u_char          type;
 1145         l_uint          agid:2;
 1146         u_char          value[2048];
 1147 };
 1148 
 1149 struct l_dvd_bca {
 1150         u_char          type;
 1151         l_int           len;
 1152         u_char          value[188];
 1153 };
 1154 
 1155 struct l_dvd_manufact {
 1156         u_char          type;
 1157         u_char          layer_num;
 1158         l_int           len;
 1159         u_char          value[2048];
 1160 };
 1161 
 1162 typedef union {
 1163         u_char                  type;
 1164         struct l_dvd_physical   physical;
 1165         struct l_dvd_copyright  copyright;
 1166         struct l_dvd_disckey    disckey;
 1167         struct l_dvd_bca        bca;
 1168         struct l_dvd_manufact   manufact;
 1169 } l_dvd_struct;
 1170 
 1171 typedef u_char l_dvd_key[5];
 1172 typedef u_char l_dvd_challenge[10];
 1173 
 1174 struct l_dvd_lu_send_agid {
 1175         u_char          type;
 1176         l_uint          agid:2;
 1177 };
 1178 
 1179 struct l_dvd_host_send_challenge {
 1180         u_char          type;
 1181         l_uint          agid:2;
 1182         l_dvd_challenge chal;
 1183 };
 1184 
 1185 struct l_dvd_send_key {
 1186         u_char          type;
 1187         l_uint          agid:2;
 1188         l_dvd_key       key;
 1189 };
 1190 
 1191 struct l_dvd_lu_send_challenge {
 1192         u_char          type;
 1193         l_uint          agid:2;
 1194         l_dvd_challenge chal;
 1195 };
 1196 
 1197 struct l_dvd_lu_send_title_key {
 1198         u_char          type;
 1199         l_uint          agid:2;
 1200         l_dvd_key       title_key;
 1201         l_int           lba;
 1202         l_uint          cpm:1;
 1203         l_uint          cp_sec:1;
 1204         l_uint          cgms:2;
 1205 };
 1206 
 1207 struct l_dvd_lu_send_asf {
 1208         u_char          type;
 1209         l_uint          agid:2;
 1210         l_uint          asf:1;
 1211 };
 1212 
 1213 struct l_dvd_host_send_rpcstate {
 1214         u_char          type;
 1215         u_char          pdrc;
 1216 };
 1217 
 1218 struct l_dvd_lu_send_rpcstate {
 1219         u_char          type:2;
 1220         u_char          vra:3;
 1221         u_char          ucca:3;
 1222         u_char          region_mask;
 1223         u_char          rpc_scheme;
 1224 };
 1225 
 1226 typedef union {
 1227         u_char                          type;
 1228         struct l_dvd_lu_send_agid       lsa;
 1229         struct l_dvd_host_send_challenge hsc;
 1230         struct l_dvd_send_key           lsk;
 1231         struct l_dvd_lu_send_challenge  lsc;
 1232         struct l_dvd_send_key           hsk;
 1233         struct l_dvd_lu_send_title_key  lstk;
 1234         struct l_dvd_lu_send_asf        lsasf;
 1235         struct l_dvd_host_send_rpcstate hrpcs;
 1236         struct l_dvd_lu_send_rpcstate   lrpcs;
 1237 } l_dvd_authinfo;
 1238 
 1239 static void
 1240 bsd_to_linux_msf_lba(u_char af, union msf_lba *bp, union linux_cdrom_addr *lp)
 1241 {
 1242         if (af == CD_LBA_FORMAT)
 1243                 lp->lba = bp->lba;
 1244         else {
 1245                 lp->msf.minute = bp->msf.minute;
 1246                 lp->msf.second = bp->msf.second;
 1247                 lp->msf.frame = bp->msf.frame;
 1248         }
 1249 }
 1250 
 1251 static void
 1252 set_linux_cdrom_addr(union linux_cdrom_addr *addr, int format, int lba)
 1253 {
 1254         if (format == LINUX_CDROM_MSF) {
 1255                 addr->msf.frame = lba % 75;
 1256                 lba /= 75;
 1257                 lba += 2;
 1258                 addr->msf.second = lba % 60;
 1259                 addr->msf.minute = lba / 60;
 1260         } else
 1261                 addr->lba = lba;
 1262 }
 1263 
 1264 static int
 1265 linux_to_bsd_dvd_struct(l_dvd_struct *lp, struct dvd_struct *bp)
 1266 {
 1267         bp->format = lp->type;
 1268         switch (bp->format) {
 1269         case DVD_STRUCT_PHYSICAL:
 1270                 if (bp->layer_num >= 4)
 1271                         return (EINVAL);
 1272                 bp->layer_num = lp->physical.layer_num;
 1273                 break;
 1274         case DVD_STRUCT_COPYRIGHT:
 1275                 bp->layer_num = lp->copyright.layer_num;
 1276                 break;
 1277         case DVD_STRUCT_DISCKEY:
 1278                 bp->agid = lp->disckey.agid;
 1279                 break;
 1280         case DVD_STRUCT_BCA:
 1281         case DVD_STRUCT_MANUFACT:
 1282                 break;
 1283         default:
 1284                 return (EINVAL);
 1285         }
 1286         return (0);
 1287 }
 1288 
 1289 static int
 1290 bsd_to_linux_dvd_struct(struct dvd_struct *bp, l_dvd_struct *lp)
 1291 {
 1292         switch (bp->format) {
 1293         case DVD_STRUCT_PHYSICAL: {
 1294                 struct dvd_layer *blp = (struct dvd_layer *)bp->data;
 1295                 struct l_dvd_layer *llp = &lp->physical.layer[bp->layer_num];
 1296                 memset(llp, 0, sizeof(*llp));
 1297                 llp->book_version = blp->book_version;
 1298                 llp->book_type = blp->book_type;
 1299                 llp->min_rate = blp->max_rate;
 1300                 llp->disc_size = blp->disc_size;
 1301                 llp->layer_type = blp->layer_type;
 1302                 llp->track_path = blp->track_path;
 1303                 llp->nlayers = blp->nlayers;
 1304                 llp->track_density = blp->track_density;
 1305                 llp->linear_density = blp->linear_density;
 1306                 llp->bca = blp->bca;
 1307                 llp->start_sector = blp->start_sector;
 1308                 llp->end_sector = blp->end_sector;
 1309                 llp->end_sector_l0 = blp->end_sector_l0;
 1310                 break;
 1311         }
 1312         case DVD_STRUCT_COPYRIGHT:
 1313                 lp->copyright.cpst = bp->cpst;
 1314                 lp->copyright.rmi = bp->rmi;
 1315                 break;
 1316         case DVD_STRUCT_DISCKEY:
 1317                 memcpy(lp->disckey.value, bp->data, sizeof(lp->disckey.value));
 1318                 break;
 1319         case DVD_STRUCT_BCA:
 1320                 lp->bca.len = bp->length;
 1321                 memcpy(lp->bca.value, bp->data, sizeof(lp->bca.value));
 1322                 break;
 1323         case DVD_STRUCT_MANUFACT:
 1324                 lp->manufact.len = bp->length;
 1325                 memcpy(lp->manufact.value, bp->data,
 1326                     sizeof(lp->manufact.value));
 1327                 /* lp->manufact.layer_num is unused in linux (redhat 7.0) */
 1328                 break;
 1329         default:
 1330                 return (EINVAL);
 1331         }
 1332         return (0);
 1333 }
 1334 
 1335 static int
 1336 linux_to_bsd_dvd_authinfo(l_dvd_authinfo *lp, int *bcode,
 1337     struct dvd_authinfo *bp)
 1338 {
 1339         switch (lp->type) {
 1340         case LINUX_DVD_LU_SEND_AGID:
 1341                 *bcode = DVDIOCREPORTKEY;
 1342                 bp->format = DVD_REPORT_AGID;
 1343                 bp->agid = lp->lsa.agid;
 1344                 break;
 1345         case LINUX_DVD_HOST_SEND_CHALLENGE:
 1346                 *bcode = DVDIOCSENDKEY;
 1347                 bp->format = DVD_SEND_CHALLENGE;
 1348                 bp->agid = lp->hsc.agid;
 1349                 memcpy(bp->keychal, lp->hsc.chal, 10);
 1350                 break;
 1351         case LINUX_DVD_LU_SEND_KEY1:
 1352                 *bcode = DVDIOCREPORTKEY;
 1353                 bp->format = DVD_REPORT_KEY1;
 1354                 bp->agid = lp->lsk.agid;
 1355                 break;
 1356         case LINUX_DVD_LU_SEND_CHALLENGE:
 1357                 *bcode = DVDIOCREPORTKEY;
 1358                 bp->format = DVD_REPORT_CHALLENGE;
 1359                 bp->agid = lp->lsc.agid;
 1360                 break;
 1361         case LINUX_DVD_HOST_SEND_KEY2:
 1362                 *bcode = DVDIOCSENDKEY;
 1363                 bp->format = DVD_SEND_KEY2;
 1364                 bp->agid = lp->hsk.agid;
 1365                 memcpy(bp->keychal, lp->hsk.key, 5);
 1366                 break;
 1367         case LINUX_DVD_LU_SEND_TITLE_KEY:
 1368                 *bcode = DVDIOCREPORTKEY;
 1369                 bp->format = DVD_REPORT_TITLE_KEY;
 1370                 bp->agid = lp->lstk.agid;
 1371                 bp->lba = lp->lstk.lba;
 1372                 break;
 1373         case LINUX_DVD_LU_SEND_ASF:
 1374                 *bcode = DVDIOCREPORTKEY;
 1375                 bp->format = DVD_REPORT_ASF;
 1376                 bp->agid = lp->lsasf.agid;
 1377                 break;
 1378         case LINUX_DVD_INVALIDATE_AGID:
 1379                 *bcode = DVDIOCREPORTKEY;
 1380                 bp->format = DVD_INVALIDATE_AGID;
 1381                 bp->agid = lp->lsa.agid;
 1382                 break;
 1383         case LINUX_DVD_LU_SEND_RPC_STATE:
 1384                 *bcode = DVDIOCREPORTKEY;
 1385                 bp->format = DVD_REPORT_RPC;
 1386                 break;
 1387         case LINUX_DVD_HOST_SEND_RPC_STATE:
 1388                 *bcode = DVDIOCSENDKEY;
 1389                 bp->format = DVD_SEND_RPC;
 1390                 bp->region = lp->hrpcs.pdrc;
 1391                 break;
 1392         default:
 1393                 return (EINVAL);
 1394         }
 1395         return (0);
 1396 }
 1397 
 1398 static int
 1399 bsd_to_linux_dvd_authinfo(struct dvd_authinfo *bp, l_dvd_authinfo *lp)
 1400 {
 1401         switch (lp->type) {
 1402         case LINUX_DVD_LU_SEND_AGID:
 1403                 lp->lsa.agid = bp->agid;
 1404                 break;
 1405         case LINUX_DVD_HOST_SEND_CHALLENGE:
 1406                 lp->type = LINUX_DVD_LU_SEND_KEY1;
 1407                 break;
 1408         case LINUX_DVD_LU_SEND_KEY1:
 1409                 memcpy(lp->lsk.key, bp->keychal, sizeof(lp->lsk.key));
 1410                 break;
 1411         case LINUX_DVD_LU_SEND_CHALLENGE:
 1412                 memcpy(lp->lsc.chal, bp->keychal, sizeof(lp->lsc.chal));
 1413                 break;
 1414         case LINUX_DVD_HOST_SEND_KEY2:
 1415                 lp->type = LINUX_DVD_AUTH_ESTABLISHED;
 1416                 break;
 1417         case LINUX_DVD_LU_SEND_TITLE_KEY:
 1418                 memcpy(lp->lstk.title_key, bp->keychal,
 1419                     sizeof(lp->lstk.title_key));
 1420                 lp->lstk.cpm = bp->cpm;
 1421                 lp->lstk.cp_sec = bp->cp_sec;
 1422                 lp->lstk.cgms = bp->cgms;
 1423                 break;
 1424         case LINUX_DVD_LU_SEND_ASF:
 1425                 lp->lsasf.asf = bp->asf;
 1426                 break;
 1427         case LINUX_DVD_INVALIDATE_AGID:
 1428                 break;
 1429         case LINUX_DVD_LU_SEND_RPC_STATE:
 1430                 lp->lrpcs.type = bp->reg_type;
 1431                 lp->lrpcs.vra = bp->vend_rsts;
 1432                 lp->lrpcs.ucca = bp->user_rsts;
 1433                 lp->lrpcs.region_mask = bp->region;
 1434                 lp->lrpcs.rpc_scheme = bp->rpc_scheme;
 1435                 break;
 1436         case LINUX_DVD_HOST_SEND_RPC_STATE:
 1437                 break;
 1438         default:
 1439                 return (EINVAL);
 1440         }
 1441         return (0);
 1442 }
 1443 
 1444 static int
 1445 linux_ioctl_cdrom(struct thread *td, struct linux_ioctl_args *args)
 1446 {
 1447         cap_rights_t rights;
 1448         struct file *fp;
 1449         int error;
 1450 
 1451         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 1452         if (error != 0)
 1453                 return (error);
 1454         switch (args->cmd & 0xffff) {
 1455 
 1456         case LINUX_CDROMPAUSE:
 1457                 args->cmd = CDIOCPAUSE;
 1458                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1459                 break;
 1460 
 1461         case LINUX_CDROMRESUME:
 1462                 args->cmd = CDIOCRESUME;
 1463                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1464                 break;
 1465 
 1466         case LINUX_CDROMPLAYMSF:
 1467                 args->cmd = CDIOCPLAYMSF;
 1468                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1469                 break;
 1470 
 1471         case LINUX_CDROMPLAYTRKIND:
 1472                 args->cmd = CDIOCPLAYTRACKS;
 1473                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1474                 break;
 1475 
 1476         case LINUX_CDROMREADTOCHDR: {
 1477                 struct ioc_toc_header th;
 1478                 struct linux_cdrom_tochdr lth;
 1479                 error = fo_ioctl(fp, CDIOREADTOCHEADER, (caddr_t)&th,
 1480                     td->td_ucred, td);
 1481                 if (!error) {
 1482                         lth.cdth_trk0 = th.starting_track;
 1483                         lth.cdth_trk1 = th.ending_track;
 1484                         copyout(&lth, (void *)args->arg, sizeof(lth));
 1485                 }
 1486                 break;
 1487         }
 1488 
 1489         case LINUX_CDROMREADTOCENTRY: {
 1490                 struct linux_cdrom_tocentry lte;
 1491                 struct ioc_read_toc_single_entry irtse;
 1492 
 1493                 error = copyin((void *)args->arg, &lte, sizeof(lte));
 1494                 if (error)
 1495                         break;
 1496                 irtse.address_format = lte.cdte_format;
 1497                 irtse.track = lte.cdte_track;
 1498                 error = fo_ioctl(fp, CDIOREADTOCENTRY, (caddr_t)&irtse,
 1499                     td->td_ucred, td);
 1500                 if (!error) {
 1501                         lte.cdte_ctrl = irtse.entry.control;
 1502                         lte.cdte_adr = irtse.entry.addr_type;
 1503                         bsd_to_linux_msf_lba(irtse.address_format,
 1504                             &irtse.entry.addr, &lte.cdte_addr);
 1505                         error = copyout(&lte, (void *)args->arg, sizeof(lte));
 1506                 }
 1507                 break;
 1508         }
 1509 
 1510         case LINUX_CDROMSTOP:
 1511                 args->cmd = CDIOCSTOP;
 1512                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1513                 break;
 1514 
 1515         case LINUX_CDROMSTART:
 1516                 args->cmd = CDIOCSTART;
 1517                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1518                 break;
 1519 
 1520         case LINUX_CDROMEJECT:
 1521                 args->cmd = CDIOCEJECT;
 1522                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1523                 break;
 1524 
 1525         /* LINUX_CDROMVOLCTRL */
 1526 
 1527         case LINUX_CDROMSUBCHNL: {
 1528                 struct linux_cdrom_subchnl sc;
 1529                 struct ioc_read_subchannel bsdsc;
 1530                 struct cd_sub_channel_info bsdinfo;
 1531 
 1532                 bsdsc.address_format = CD_LBA_FORMAT;
 1533                 bsdsc.data_format = CD_CURRENT_POSITION;
 1534                 bsdsc.track = 0;
 1535                 bsdsc.data_len = sizeof(bsdinfo);
 1536                 bsdsc.data = &bsdinfo;
 1537                 error = fo_ioctl(fp, CDIOCREADSUBCHANNEL_SYSSPACE,
 1538                     (caddr_t)&bsdsc, td->td_ucred, td);
 1539                 if (error)
 1540                         break;
 1541                 error = copyin((void *)args->arg, &sc, sizeof(sc));
 1542                 if (error)
 1543                         break;
 1544                 sc.cdsc_audiostatus = bsdinfo.header.audio_status;
 1545                 sc.cdsc_adr = bsdinfo.what.position.addr_type;
 1546                 sc.cdsc_ctrl = bsdinfo.what.position.control;
 1547                 sc.cdsc_trk = bsdinfo.what.position.track_number;
 1548                 sc.cdsc_ind = bsdinfo.what.position.index_number;
 1549                 set_linux_cdrom_addr(&sc.cdsc_absaddr, sc.cdsc_format,
 1550                     bsdinfo.what.position.absaddr.lba);
 1551                 set_linux_cdrom_addr(&sc.cdsc_reladdr, sc.cdsc_format,
 1552                     bsdinfo.what.position.reladdr.lba);
 1553                 error = copyout(&sc, (void *)args->arg, sizeof(sc));
 1554                 break;
 1555         }
 1556 
 1557         /* LINUX_CDROMREADMODE2 */
 1558         /* LINUX_CDROMREADMODE1 */
 1559         /* LINUX_CDROMREADAUDIO */
 1560         /* LINUX_CDROMEJECT_SW */
 1561         /* LINUX_CDROMMULTISESSION */
 1562         /* LINUX_CDROM_GET_UPC */
 1563 
 1564         case LINUX_CDROMRESET:
 1565                 args->cmd = CDIOCRESET;
 1566                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1567                 break;
 1568 
 1569         /* LINUX_CDROMVOLREAD */
 1570         /* LINUX_CDROMREADRAW */
 1571         /* LINUX_CDROMREADCOOKED */
 1572         /* LINUX_CDROMSEEK */
 1573         /* LINUX_CDROMPLAYBLK */
 1574         /* LINUX_CDROMREADALL */
 1575         /* LINUX_CDROMCLOSETRAY */
 1576         /* LINUX_CDROMLOADFROMSLOT */
 1577         /* LINUX_CDROMGETSPINDOWN */
 1578         /* LINUX_CDROMSETSPINDOWN */
 1579         /* LINUX_CDROM_SET_OPTIONS */
 1580         /* LINUX_CDROM_CLEAR_OPTIONS */
 1581         /* LINUX_CDROM_SELECT_SPEED */
 1582         /* LINUX_CDROM_SELECT_DISC */
 1583         /* LINUX_CDROM_MEDIA_CHANGED */
 1584         /* LINUX_CDROM_DRIVE_STATUS */
 1585         /* LINUX_CDROM_DISC_STATUS */
 1586         /* LINUX_CDROM_CHANGER_NSLOTS */
 1587         /* LINUX_CDROM_LOCKDOOR */
 1588         /* LINUX_CDROM_DEBUG */
 1589         /* LINUX_CDROM_GET_CAPABILITY */
 1590         /* LINUX_CDROMAUDIOBUFSIZ */
 1591 
 1592         case LINUX_DVD_READ_STRUCT: {
 1593                 l_dvd_struct *lds;
 1594                 struct dvd_struct *bds;
 1595 
 1596                 lds = malloc(sizeof(*lds), M_LINUX, M_WAITOK);
 1597                 bds = malloc(sizeof(*bds), M_LINUX, M_WAITOK);
 1598                 error = copyin((void *)args->arg, lds, sizeof(*lds));
 1599                 if (error)
 1600                         goto out;
 1601                 error = linux_to_bsd_dvd_struct(lds, bds);
 1602                 if (error)
 1603                         goto out;
 1604                 error = fo_ioctl(fp, DVDIOCREADSTRUCTURE, (caddr_t)bds,
 1605                     td->td_ucred, td);
 1606                 if (error)
 1607                         goto out;
 1608                 error = bsd_to_linux_dvd_struct(bds, lds);
 1609                 if (error)
 1610                         goto out;
 1611                 error = copyout(lds, (void *)args->arg, sizeof(*lds));
 1612         out:
 1613                 free(bds, M_LINUX);
 1614                 free(lds, M_LINUX);
 1615                 break;
 1616         }
 1617 
 1618         /* LINUX_DVD_WRITE_STRUCT */
 1619 
 1620         case LINUX_DVD_AUTH: {
 1621                 l_dvd_authinfo lda;
 1622                 struct dvd_authinfo bda;
 1623                 int bcode;
 1624 
 1625                 error = copyin((void *)args->arg, &lda, sizeof(lda));
 1626                 if (error)
 1627                         break;
 1628                 error = linux_to_bsd_dvd_authinfo(&lda, &bcode, &bda);
 1629                 if (error)
 1630                         break;
 1631                 error = fo_ioctl(fp, bcode, (caddr_t)&bda, td->td_ucred,
 1632                     td);
 1633                 if (error) {
 1634                         if (lda.type == LINUX_DVD_HOST_SEND_KEY2) {
 1635                                 lda.type = LINUX_DVD_AUTH_FAILURE;
 1636                                 copyout(&lda, (void *)args->arg, sizeof(lda));
 1637                         }
 1638                         break;
 1639                 }
 1640                 error = bsd_to_linux_dvd_authinfo(&bda, &lda);
 1641                 if (error)
 1642                         break;
 1643                 error = copyout(&lda, (void *)args->arg, sizeof(lda));
 1644                 break;
 1645         }
 1646 
 1647         case LINUX_SCSI_GET_BUS_NUMBER:
 1648         case LINUX_SCSI_GET_IDLUN:
 1649                 error = linux_ioctl_sg(td, args);
 1650                 break;
 1651 
 1652         /* LINUX_CDROM_SEND_PACKET */
 1653         /* LINUX_CDROM_NEXT_WRITABLE */
 1654         /* LINUX_CDROM_LAST_WRITTEN */
 1655 
 1656         default:
 1657                 error = ENOIOCTL;
 1658                 break;
 1659         }
 1660 
 1661         fdrop(fp, td);
 1662         return (error);
 1663 }
 1664 
 1665 static int
 1666 linux_ioctl_vfat(struct thread *td, struct linux_ioctl_args *args)
 1667 {
 1668 
 1669         return (ENOTTY);
 1670 }
 1671 
 1672 /*
 1673  * Sound related ioctls
 1674  */
 1675 
 1676 struct linux_mixer_info {
 1677         char    id[16];
 1678         char    name[32];
 1679         int     modify_counter;
 1680         int     fillers[10];
 1681 };
 1682 
 1683 struct linux_old_mixer_info {
 1684         char    id[16];
 1685         char    name[32];
 1686 };
 1687 
 1688 static u_int32_t dirbits[4] = { IOC_VOID, IOC_IN, IOC_OUT, IOC_INOUT };
 1689 
 1690 #define SETDIR(c)       (((c) & ~IOC_DIRMASK) | dirbits[args->cmd >> 30])
 1691 
 1692 static int
 1693 linux_ioctl_sound(struct thread *td, struct linux_ioctl_args *args)
 1694 {
 1695 
 1696         switch (args->cmd & 0xffff) {
 1697 
 1698         case LINUX_SOUND_MIXER_WRITE_VOLUME:
 1699                 args->cmd = SETDIR(SOUND_MIXER_WRITE_VOLUME);
 1700                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1701 
 1702         case LINUX_SOUND_MIXER_WRITE_BASS:
 1703                 args->cmd = SETDIR(SOUND_MIXER_WRITE_BASS);
 1704                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1705 
 1706         case LINUX_SOUND_MIXER_WRITE_TREBLE:
 1707                 args->cmd = SETDIR(SOUND_MIXER_WRITE_TREBLE);
 1708                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1709 
 1710         case LINUX_SOUND_MIXER_WRITE_SYNTH:
 1711                 args->cmd = SETDIR(SOUND_MIXER_WRITE_SYNTH);
 1712                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1713 
 1714         case LINUX_SOUND_MIXER_WRITE_PCM:
 1715                 args->cmd = SETDIR(SOUND_MIXER_WRITE_PCM);
 1716                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1717 
 1718         case LINUX_SOUND_MIXER_WRITE_SPEAKER:
 1719                 args->cmd = SETDIR(SOUND_MIXER_WRITE_SPEAKER);
 1720                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1721 
 1722         case LINUX_SOUND_MIXER_WRITE_LINE:
 1723                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE);
 1724                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1725 
 1726         case LINUX_SOUND_MIXER_WRITE_MIC:
 1727                 args->cmd = SETDIR(SOUND_MIXER_WRITE_MIC);
 1728                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1729 
 1730         case LINUX_SOUND_MIXER_WRITE_CD:
 1731                 args->cmd = SETDIR(SOUND_MIXER_WRITE_CD);
 1732                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1733 
 1734         case LINUX_SOUND_MIXER_WRITE_IMIX:
 1735                 args->cmd = SETDIR(SOUND_MIXER_WRITE_IMIX);
 1736                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1737 
 1738         case LINUX_SOUND_MIXER_WRITE_ALTPCM:
 1739                 args->cmd = SETDIR(SOUND_MIXER_WRITE_ALTPCM);
 1740                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1741 
 1742         case LINUX_SOUND_MIXER_WRITE_RECLEV:
 1743                 args->cmd = SETDIR(SOUND_MIXER_WRITE_RECLEV);
 1744                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1745 
 1746         case LINUX_SOUND_MIXER_WRITE_IGAIN:
 1747                 args->cmd = SETDIR(SOUND_MIXER_WRITE_IGAIN);
 1748                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1749 
 1750         case LINUX_SOUND_MIXER_WRITE_OGAIN:
 1751                 args->cmd = SETDIR(SOUND_MIXER_WRITE_OGAIN);
 1752                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1753 
 1754         case LINUX_SOUND_MIXER_WRITE_LINE1:
 1755                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE1);
 1756                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1757 
 1758         case LINUX_SOUND_MIXER_WRITE_LINE2:
 1759                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE2);
 1760                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1761 
 1762         case LINUX_SOUND_MIXER_WRITE_LINE3:
 1763                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE3);
 1764                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1765 
 1766         case LINUX_SOUND_MIXER_INFO: {
 1767                 /* Key on encoded length */
 1768                 switch ((args->cmd >> 16) & 0x1fff) {
 1769                 case 0x005c: {  /* SOUND_MIXER_INFO */
 1770                         struct linux_mixer_info info;
 1771                         bzero(&info, sizeof(info));
 1772                         strncpy(info.id, "OSS", sizeof(info.id) - 1);
 1773                         strncpy(info.name, "FreeBSD OSS Mixer", sizeof(info.name) - 1);
 1774                         copyout(&info, (void *)args->arg, sizeof(info));
 1775                         return (0);
 1776                 }
 1777                 case 0x0030: {  /* SOUND_OLD_MIXER_INFO */
 1778                         struct linux_old_mixer_info info;
 1779                         bzero(&info, sizeof(info));
 1780                         strncpy(info.id, "OSS", sizeof(info.id) - 1);
 1781                         strncpy(info.name, "FreeBSD OSS Mixer", sizeof(info.name) - 1);
 1782                         copyout(&info, (void *)args->arg, sizeof(info));
 1783                         return (0);
 1784                 }
 1785                 default:
 1786                         return (ENOIOCTL);
 1787                 }
 1788                 break;
 1789         }
 1790 
 1791         case LINUX_OSS_GETVERSION: {
 1792                 int version = linux_get_oss_version(td);
 1793                 return (copyout(&version, (void *)args->arg, sizeof(int)));
 1794         }
 1795 
 1796         case LINUX_SOUND_MIXER_READ_STEREODEVS:
 1797                 args->cmd = SOUND_MIXER_READ_STEREODEVS;
 1798                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1799 
 1800         case LINUX_SOUND_MIXER_READ_CAPS:
 1801                 args->cmd = SOUND_MIXER_READ_CAPS;
 1802                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1803 
 1804         case LINUX_SOUND_MIXER_READ_RECMASK:
 1805                 args->cmd = SOUND_MIXER_READ_RECMASK;
 1806                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1807 
 1808         case LINUX_SOUND_MIXER_READ_DEVMASK:
 1809                 args->cmd = SOUND_MIXER_READ_DEVMASK;
 1810                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1811 
 1812         case LINUX_SOUND_MIXER_WRITE_RECSRC:
 1813                 args->cmd = SETDIR(SOUND_MIXER_WRITE_RECSRC);
 1814                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1815 
 1816         case LINUX_SNDCTL_DSP_RESET:
 1817                 args->cmd = SNDCTL_DSP_RESET;
 1818                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1819 
 1820         case LINUX_SNDCTL_DSP_SYNC:
 1821                 args->cmd = SNDCTL_DSP_SYNC;
 1822                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1823 
 1824         case LINUX_SNDCTL_DSP_SPEED:
 1825                 args->cmd = SNDCTL_DSP_SPEED;
 1826                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1827 
 1828         case LINUX_SNDCTL_DSP_STEREO:
 1829                 args->cmd = SNDCTL_DSP_STEREO;
 1830                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1831 
 1832         case LINUX_SNDCTL_DSP_GETBLKSIZE: /* LINUX_SNDCTL_DSP_SETBLKSIZE */
 1833                 args->cmd = SNDCTL_DSP_GETBLKSIZE;
 1834                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1835 
 1836         case LINUX_SNDCTL_DSP_SETFMT:
 1837                 args->cmd = SNDCTL_DSP_SETFMT;
 1838                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1839 
 1840         case LINUX_SOUND_PCM_WRITE_CHANNELS:
 1841                 args->cmd = SOUND_PCM_WRITE_CHANNELS;
 1842                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1843 
 1844         case LINUX_SOUND_PCM_WRITE_FILTER:
 1845                 args->cmd = SOUND_PCM_WRITE_FILTER;
 1846                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1847 
 1848         case LINUX_SNDCTL_DSP_POST:
 1849                 args->cmd = SNDCTL_DSP_POST;
 1850                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1851 
 1852         case LINUX_SNDCTL_DSP_SUBDIVIDE:
 1853                 args->cmd = SNDCTL_DSP_SUBDIVIDE;
 1854                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1855 
 1856         case LINUX_SNDCTL_DSP_SETFRAGMENT:
 1857                 args->cmd = SNDCTL_DSP_SETFRAGMENT;
 1858                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1859 
 1860         case LINUX_SNDCTL_DSP_GETFMTS:
 1861                 args->cmd = SNDCTL_DSP_GETFMTS;
 1862                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1863 
 1864         case LINUX_SNDCTL_DSP_GETOSPACE:
 1865                 args->cmd = SNDCTL_DSP_GETOSPACE;
 1866                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1867 
 1868         case LINUX_SNDCTL_DSP_GETISPACE:
 1869                 args->cmd = SNDCTL_DSP_GETISPACE;
 1870                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1871 
 1872         case LINUX_SNDCTL_DSP_NONBLOCK:
 1873                 args->cmd = SNDCTL_DSP_NONBLOCK;
 1874                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1875 
 1876         case LINUX_SNDCTL_DSP_GETCAPS:
 1877                 args->cmd = SNDCTL_DSP_GETCAPS;
 1878                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1879 
 1880         case LINUX_SNDCTL_DSP_SETTRIGGER: /* LINUX_SNDCTL_GETTRIGGER */
 1881                 args->cmd = SNDCTL_DSP_SETTRIGGER;
 1882                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1883 
 1884         case LINUX_SNDCTL_DSP_GETIPTR:
 1885                 args->cmd = SNDCTL_DSP_GETIPTR;
 1886                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1887 
 1888         case LINUX_SNDCTL_DSP_GETOPTR:
 1889                 args->cmd = SNDCTL_DSP_GETOPTR;
 1890                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1891 
 1892         case LINUX_SNDCTL_DSP_SETDUPLEX:
 1893                 args->cmd = SNDCTL_DSP_SETDUPLEX;
 1894                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1895 
 1896         case LINUX_SNDCTL_DSP_GETODELAY:
 1897                 args->cmd = SNDCTL_DSP_GETODELAY;
 1898                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1899 
 1900         case LINUX_SNDCTL_SEQ_RESET:
 1901                 args->cmd = SNDCTL_SEQ_RESET;
 1902                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1903 
 1904         case LINUX_SNDCTL_SEQ_SYNC:
 1905                 args->cmd = SNDCTL_SEQ_SYNC;
 1906                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1907 
 1908         case LINUX_SNDCTL_SYNTH_INFO:
 1909                 args->cmd = SNDCTL_SYNTH_INFO;
 1910                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1911 
 1912         case LINUX_SNDCTL_SEQ_CTRLRATE:
 1913                 args->cmd = SNDCTL_SEQ_CTRLRATE;
 1914                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1915 
 1916         case LINUX_SNDCTL_SEQ_GETOUTCOUNT:
 1917                 args->cmd = SNDCTL_SEQ_GETOUTCOUNT;
 1918                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1919 
 1920         case LINUX_SNDCTL_SEQ_GETINCOUNT:
 1921                 args->cmd = SNDCTL_SEQ_GETINCOUNT;
 1922                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1923 
 1924         case LINUX_SNDCTL_SEQ_PERCMODE:
 1925                 args->cmd = SNDCTL_SEQ_PERCMODE;
 1926                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1927 
 1928         case LINUX_SNDCTL_FM_LOAD_INSTR:
 1929                 args->cmd = SNDCTL_FM_LOAD_INSTR;
 1930                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1931 
 1932         case LINUX_SNDCTL_SEQ_TESTMIDI:
 1933                 args->cmd = SNDCTL_SEQ_TESTMIDI;
 1934                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1935 
 1936         case LINUX_SNDCTL_SEQ_RESETSAMPLES:
 1937                 args->cmd = SNDCTL_SEQ_RESETSAMPLES;
 1938                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1939 
 1940         case LINUX_SNDCTL_SEQ_NRSYNTHS:
 1941                 args->cmd = SNDCTL_SEQ_NRSYNTHS;
 1942                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1943 
 1944         case LINUX_SNDCTL_SEQ_NRMIDIS:
 1945                 args->cmd = SNDCTL_SEQ_NRMIDIS;
 1946                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1947 
 1948         case LINUX_SNDCTL_MIDI_INFO:
 1949                 args->cmd = SNDCTL_MIDI_INFO;
 1950                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1951 
 1952         case LINUX_SNDCTL_SEQ_TRESHOLD:
 1953                 args->cmd = SNDCTL_SEQ_TRESHOLD;
 1954                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1955 
 1956         case LINUX_SNDCTL_SYNTH_MEMAVL:
 1957                 args->cmd = SNDCTL_SYNTH_MEMAVL;
 1958                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1959 
 1960         }
 1961 
 1962         return (ENOIOCTL);
 1963 }
 1964 
 1965 /*
 1966  * Console related ioctls
 1967  */
 1968 
 1969 #define ISSIGVALID(sig)         ((sig) > 0 && (sig) < NSIG)
 1970 
 1971 static int
 1972 linux_ioctl_console(struct thread *td, struct linux_ioctl_args *args)
 1973 {
 1974         cap_rights_t rights;
 1975         struct file *fp;
 1976         int error;
 1977 
 1978         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 1979         if (error != 0)
 1980                 return (error);
 1981         switch (args->cmd & 0xffff) {
 1982 
 1983         case LINUX_KIOCSOUND:
 1984                 args->cmd = KIOCSOUND;
 1985                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1986                 break;
 1987 
 1988         case LINUX_KDMKTONE:
 1989                 args->cmd = KDMKTONE;
 1990                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1991                 break;
 1992 
 1993         case LINUX_KDGETLED:
 1994                 args->cmd = KDGETLED;
 1995                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1996                 break;
 1997 
 1998         case LINUX_KDSETLED:
 1999                 args->cmd = KDSETLED;
 2000                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2001                 break;
 2002 
 2003         case LINUX_KDSETMODE:
 2004                 args->cmd = KDSETMODE;
 2005                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2006                 break;
 2007 
 2008         case LINUX_KDGETMODE:
 2009                 args->cmd = KDGETMODE;
 2010                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2011                 break;
 2012 
 2013         case LINUX_KDGKBMODE:
 2014                 args->cmd = KDGKBMODE;
 2015                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2016                 break;
 2017 
 2018         case LINUX_KDSKBMODE: {
 2019                 int kbdmode;
 2020                 switch (args->arg) {
 2021                 case LINUX_KBD_RAW:
 2022                         kbdmode = K_RAW;
 2023                         break;
 2024                 case LINUX_KBD_XLATE:
 2025                         kbdmode = K_XLATE;
 2026                         break;
 2027                 case LINUX_KBD_MEDIUMRAW:
 2028                         kbdmode = K_RAW;
 2029                         break;
 2030                 default:
 2031                         fdrop(fp, td);
 2032                         return (EINVAL);
 2033                 }
 2034                 error = (fo_ioctl(fp, KDSKBMODE, (caddr_t)&kbdmode,
 2035                     td->td_ucred, td));
 2036                 break;
 2037         }
 2038 
 2039         case LINUX_VT_OPENQRY:
 2040                 args->cmd = VT_OPENQRY;
 2041                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2042                 break;
 2043 
 2044         case LINUX_VT_GETMODE:
 2045                 args->cmd = VT_GETMODE;
 2046                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2047                 break;
 2048 
 2049         case LINUX_VT_SETMODE: {
 2050                 struct vt_mode mode;
 2051                 if ((error = copyin((void *)args->arg, &mode, sizeof(mode))))
 2052                         break;
 2053                 if (!ISSIGVALID(mode.frsig) && ISSIGVALID(mode.acqsig))
 2054                         mode.frsig = mode.acqsig;
 2055                 if ((error = copyout(&mode, (void *)args->arg, sizeof(mode))))
 2056                         break;
 2057                 args->cmd = VT_SETMODE;
 2058                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2059                 break;
 2060         }
 2061 
 2062         case LINUX_VT_GETSTATE:
 2063                 args->cmd = VT_GETACTIVE;
 2064                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2065                 break;
 2066 
 2067         case LINUX_VT_RELDISP:
 2068                 args->cmd = VT_RELDISP;
 2069                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2070                 break;
 2071 
 2072         case LINUX_VT_ACTIVATE:
 2073                 args->cmd = VT_ACTIVATE;
 2074                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2075                 break;
 2076 
 2077         case LINUX_VT_WAITACTIVE:
 2078                 args->cmd = VT_WAITACTIVE;
 2079                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2080                 break;
 2081 
 2082         default:
 2083                 error = ENOIOCTL;
 2084                 break;
 2085         }
 2086 
 2087         fdrop(fp, td);
 2088         return (error);
 2089 }
 2090 
 2091 /*
 2092  * Criteria for interface name translation
 2093  */
 2094 #define IFP_IS_ETH(ifp) (ifp->if_type == IFT_ETHER)
 2095 
 2096 /*
 2097  * Interface function used by linprocfs (at the time of writing). It's not
 2098  * used by the Linuxulator itself.
 2099  */
 2100 int
 2101 linux_ifname(struct ifnet *ifp, char *buffer, size_t buflen)
 2102 {
 2103         struct ifnet *ifscan;
 2104         int ethno;
 2105 
 2106         IFNET_RLOCK_ASSERT();
 2107 
 2108         /* Short-circuit non ethernet interfaces */
 2109         if (!IFP_IS_ETH(ifp))
 2110                 return (strlcpy(buffer, ifp->if_xname, buflen));
 2111 
 2112         /* Determine the (relative) unit number for ethernet interfaces */
 2113         ethno = 0;
 2114         TAILQ_FOREACH(ifscan, &V_ifnet, if_link) {
 2115                 if (ifscan == ifp)
 2116                         return (snprintf(buffer, buflen, "eth%d", ethno));
 2117                 if (IFP_IS_ETH(ifscan))
 2118                         ethno++;
 2119         }
 2120 
 2121         return (0);
 2122 }
 2123 
 2124 /*
 2125  * Translate a Linux interface name to a FreeBSD interface name,
 2126  * and return the associated ifnet structure
 2127  * bsdname and lxname need to be least IFNAMSIZ bytes long, but
 2128  * can point to the same buffer.
 2129  */
 2130 
 2131 static struct ifnet *
 2132 ifname_linux_to_bsd(struct thread *td, const char *lxname, char *bsdname)
 2133 {
 2134         struct ifnet *ifp;
 2135         int len, unit;
 2136         char *ep;
 2137         int is_eth, index;
 2138 
 2139         for (len = 0; len < LINUX_IFNAMSIZ; ++len)
 2140                 if (!isalpha(lxname[len]))
 2141                         break;
 2142         if (len == 0 || len == LINUX_IFNAMSIZ)
 2143                 return (NULL);
 2144         unit = (int)strtoul(lxname + len, &ep, 10);
 2145         if (ep == NULL || ep == lxname + len || ep >= lxname + LINUX_IFNAMSIZ)
 2146                 return (NULL);
 2147         index = 0;
 2148         is_eth = (len == 3 && !strncmp(lxname, "eth", len)) ? 1 : 0;
 2149         CURVNET_SET(TD_TO_VNET(td));
 2150         IFNET_RLOCK();
 2151         TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2152                 /*
 2153                  * Allow Linux programs to use FreeBSD names. Don't presume
 2154                  * we never have an interface named "eth", so don't make
 2155                  * the test optional based on is_eth.
 2156                  */
 2157                 if (strncmp(ifp->if_xname, lxname, LINUX_IFNAMSIZ) == 0)
 2158                         break;
 2159                 if (is_eth && IFP_IS_ETH(ifp) && unit == index++)
 2160                         break;
 2161         }
 2162         IFNET_RUNLOCK();
 2163         CURVNET_RESTORE();
 2164         if (ifp != NULL)
 2165                 strlcpy(bsdname, ifp->if_xname, IFNAMSIZ);
 2166         return (ifp);
 2167 }
 2168 
 2169 /*
 2170  * Implement the SIOCGIFCONF ioctl
 2171  */
 2172 
 2173 static int
 2174 linux_ifconf(struct thread *td, struct ifconf *uifc)
 2175 {
 2176 #ifdef COMPAT_LINUX32
 2177         struct l_ifconf ifc;
 2178 #else
 2179         struct ifconf ifc;
 2180 #endif
 2181         struct l_ifreq ifr;
 2182         struct ifnet *ifp;
 2183         struct ifaddr *ifa;
 2184         struct sbuf *sb;
 2185         int error, ethno, full = 0, valid_len, max_len;
 2186 
 2187         error = copyin(uifc, &ifc, sizeof(ifc));
 2188         if (error != 0)
 2189                 return (error);
 2190 
 2191         max_len = MAXPHYS - 1;
 2192 
 2193         CURVNET_SET(TD_TO_VNET(td));
 2194         /* handle the 'request buffer size' case */
 2195         if ((l_uintptr_t)ifc.ifc_buf == PTROUT(NULL)) {
 2196                 ifc.ifc_len = 0;
 2197                 IFNET_RLOCK();
 2198                 TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2199                         TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2200                                 struct sockaddr *sa = ifa->ifa_addr;
 2201                                 if (sa->sa_family == AF_INET)
 2202                                         ifc.ifc_len += sizeof(ifr);
 2203                         }
 2204                 }
 2205                 IFNET_RUNLOCK();
 2206                 error = copyout(&ifc, uifc, sizeof(ifc));
 2207                 CURVNET_RESTORE();
 2208                 return (error);
 2209         }
 2210 
 2211         if (ifc.ifc_len <= 0) {
 2212                 CURVNET_RESTORE();
 2213                 return (EINVAL);
 2214         }
 2215 
 2216 again:
 2217         /* Keep track of eth interfaces */
 2218         ethno = 0;
 2219         if (ifc.ifc_len <= max_len) {
 2220                 max_len = ifc.ifc_len;
 2221                 full = 1;
 2222         }
 2223         sb = sbuf_new(NULL, NULL, max_len + 1, SBUF_FIXEDLEN);
 2224         max_len = 0;
 2225         valid_len = 0;
 2226 
 2227         /* Return all AF_INET addresses of all interfaces */
 2228         IFNET_RLOCK();
 2229         TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 2230                 int addrs = 0;
 2231 
 2232                 bzero(&ifr, sizeof(ifr));
 2233                 if (IFP_IS_ETH(ifp))
 2234                         snprintf(ifr.ifr_name, LINUX_IFNAMSIZ, "eth%d",
 2235                             ethno++);
 2236                 else
 2237                         strlcpy(ifr.ifr_name, ifp->if_xname, LINUX_IFNAMSIZ);
 2238 
 2239                 /* Walk the address list */
 2240                 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2241                         struct sockaddr *sa = ifa->ifa_addr;
 2242 
 2243                         if (sa->sa_family == AF_INET) {
 2244                                 ifr.ifr_addr.sa_family = LINUX_AF_INET;
 2245                                 memcpy(ifr.ifr_addr.sa_data, sa->sa_data,
 2246                                     sizeof(ifr.ifr_addr.sa_data));
 2247                                 sbuf_bcat(sb, &ifr, sizeof(ifr));
 2248                                 max_len += sizeof(ifr);
 2249                                 addrs++;
 2250                         }
 2251 
 2252                         if (sbuf_error(sb) == 0)
 2253                                 valid_len = sbuf_len(sb);
 2254                 }
 2255                 if (addrs == 0) {
 2256                         bzero((caddr_t)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
 2257                         sbuf_bcat(sb, &ifr, sizeof(ifr));
 2258                         max_len += sizeof(ifr);
 2259 
 2260                         if (sbuf_error(sb) == 0)
 2261                                 valid_len = sbuf_len(sb);
 2262                 }
 2263         }
 2264         IFNET_RUNLOCK();
 2265 
 2266         if (valid_len != max_len && !full) {
 2267                 sbuf_delete(sb);
 2268                 goto again;
 2269         }
 2270 
 2271         ifc.ifc_len = valid_len; 
 2272         sbuf_finish(sb);
 2273         error = copyout(sbuf_data(sb), PTRIN(ifc.ifc_buf), ifc.ifc_len);
 2274         if (error == 0)
 2275                 error = copyout(&ifc, uifc, sizeof(ifc));
 2276         sbuf_delete(sb);
 2277         CURVNET_RESTORE();
 2278 
 2279         return (error);
 2280 }
 2281 
 2282 static int
 2283 linux_gifflags(struct thread *td, struct ifnet *ifp, struct l_ifreq *ifr)
 2284 {
 2285         l_short flags;
 2286 
 2287         flags = (ifp->if_flags | ifp->if_drv_flags) & 0xffff;
 2288         /* these flags have no Linux equivalent */
 2289         flags &= ~(IFF_SMART|IFF_DRV_OACTIVE|IFF_SIMPLEX|
 2290             IFF_LINK0|IFF_LINK1|IFF_LINK2);
 2291         /* Linux' multicast flag is in a different bit */
 2292         if (flags & IFF_MULTICAST) {
 2293                 flags &= ~IFF_MULTICAST;
 2294                 flags |= 0x1000;
 2295         }
 2296 
 2297         return (copyout(&flags, &ifr->ifr_flags, sizeof(flags)));
 2298 }
 2299 
 2300 #define ARPHRD_ETHER    1
 2301 #define ARPHRD_LOOPBACK 772
 2302 
 2303 static int
 2304 linux_gifhwaddr(struct ifnet *ifp, struct l_ifreq *ifr)
 2305 {
 2306         struct ifaddr *ifa;
 2307         struct sockaddr_dl *sdl;
 2308         struct l_sockaddr lsa;
 2309 
 2310         if (ifp->if_type == IFT_LOOP) {
 2311                 bzero(&lsa, sizeof(lsa));
 2312                 lsa.sa_family = ARPHRD_LOOPBACK;
 2313                 return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof(lsa)));
 2314         }
 2315 
 2316         if (ifp->if_type != IFT_ETHER)
 2317                 return (ENOENT);
 2318 
 2319         TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 2320                 sdl = (struct sockaddr_dl*)ifa->ifa_addr;
 2321                 if (sdl != NULL && (sdl->sdl_family == AF_LINK) &&
 2322                     (sdl->sdl_type == IFT_ETHER)) {
 2323                         bzero(&lsa, sizeof(lsa));
 2324                         lsa.sa_family = ARPHRD_ETHER;
 2325                         bcopy(LLADDR(sdl), lsa.sa_data, LINUX_IFHWADDRLEN);
 2326                         return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof(lsa)));
 2327                 }
 2328         }
 2329 
 2330         return (ENOENT);
 2331 }
 2332 
 2333 
 2334  /*
 2335 * If we fault in bsd_to_linux_ifreq() then we will fault when we call
 2336 * the native ioctl().  Thus, we don't really need to check the return
 2337 * value of this function.
 2338 */
 2339 static int
 2340 bsd_to_linux_ifreq(struct ifreq *arg)
 2341 {
 2342         struct ifreq ifr;
 2343         size_t ifr_len = sizeof(struct ifreq);
 2344         int error;
 2345         
 2346         if ((error = copyin(arg, &ifr, ifr_len)))
 2347                 return (error);
 2348         
 2349         *(u_short *)&ifr.ifr_addr = ifr.ifr_addr.sa_family;
 2350         
 2351         error = copyout(&ifr, arg, ifr_len);
 2352 
 2353         return (error);
 2354 }
 2355 
 2356 /*
 2357  * Socket related ioctls
 2358  */
 2359 
 2360 static int
 2361 linux_ioctl_socket(struct thread *td, struct linux_ioctl_args *args)
 2362 {
 2363         char lifname[LINUX_IFNAMSIZ], ifname[IFNAMSIZ];
 2364         cap_rights_t rights;
 2365         struct ifnet *ifp;
 2366         struct file *fp;
 2367         int error, type;
 2368 
 2369         ifp = NULL;
 2370         error = 0;
 2371 
 2372         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 2373         if (error != 0)
 2374                 return (error);
 2375         type = fp->f_type;
 2376         fdrop(fp, td);
 2377         if (type != DTYPE_SOCKET) {
 2378                 /* not a socket - probably a tap / vmnet device */
 2379                 switch (args->cmd) {
 2380                 case LINUX_SIOCGIFADDR:
 2381                 case LINUX_SIOCSIFADDR:
 2382                 case LINUX_SIOCGIFFLAGS:
 2383                         return (linux_ioctl_special(td, args));
 2384                 default:
 2385                         return (ENOIOCTL);
 2386                 }
 2387         }
 2388 
 2389         switch (args->cmd & 0xffff) {
 2390 
 2391         case LINUX_FIOGETOWN:
 2392         case LINUX_FIOSETOWN:
 2393         case LINUX_SIOCADDMULTI:
 2394         case LINUX_SIOCATMARK:
 2395         case LINUX_SIOCDELMULTI:
 2396         case LINUX_SIOCGIFCONF:
 2397         case LINUX_SIOCGPGRP:
 2398         case LINUX_SIOCSPGRP:
 2399         case LINUX_SIOCGIFCOUNT:
 2400                 /* these ioctls don't take an interface name */
 2401 #ifdef DEBUG
 2402                 printf("%s(): ioctl %d\n", __func__,
 2403                     args->cmd & 0xffff);
 2404 #endif
 2405                 break;
 2406 
 2407         case LINUX_SIOCGIFFLAGS:
 2408         case LINUX_SIOCGIFADDR:
 2409         case LINUX_SIOCSIFADDR:
 2410         case LINUX_SIOCGIFDSTADDR:
 2411         case LINUX_SIOCGIFBRDADDR:
 2412         case LINUX_SIOCGIFNETMASK:
 2413         case LINUX_SIOCSIFNETMASK:
 2414         case LINUX_SIOCGIFMTU:
 2415         case LINUX_SIOCSIFMTU:
 2416         case LINUX_SIOCSIFNAME:
 2417         case LINUX_SIOCGIFHWADDR:
 2418         case LINUX_SIOCSIFHWADDR:
 2419         case LINUX_SIOCDEVPRIVATE:
 2420         case LINUX_SIOCDEVPRIVATE+1:
 2421         case LINUX_SIOCGIFINDEX:
 2422                 /* copy in the interface name and translate it. */
 2423                 error = copyin((void *)args->arg, lifname, LINUX_IFNAMSIZ);
 2424                 if (error != 0)
 2425                         return (error);
 2426 #ifdef DEBUG
 2427                 printf("%s(): ioctl %d on %.*s\n", __func__,
 2428                     args->cmd & 0xffff, LINUX_IFNAMSIZ, lifname);
 2429 #endif
 2430                 ifp = ifname_linux_to_bsd(td, lifname, ifname);
 2431                 if (ifp == NULL)
 2432                         return (EINVAL);
 2433                 /*
 2434                  * We need to copy it back out in case we pass the
 2435                  * request on to our native ioctl(), which will expect
 2436                  * the ifreq to be in user space and have the correct
 2437                  * interface name.
 2438                  */
 2439                 error = copyout(ifname, (void *)args->arg, IFNAMSIZ);
 2440                 if (error != 0)
 2441                         return (error);
 2442 #ifdef DEBUG
 2443                 printf("%s(): %s translated to %s\n", __func__,
 2444                     lifname, ifname);
 2445 #endif
 2446                 break;
 2447 
 2448         default:
 2449                 return (ENOIOCTL);
 2450         }
 2451 
 2452         switch (args->cmd & 0xffff) {
 2453 
 2454         case LINUX_FIOSETOWN:
 2455                 args->cmd = FIOSETOWN;
 2456                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2457                 break;
 2458 
 2459         case LINUX_SIOCSPGRP:
 2460                 args->cmd = SIOCSPGRP;
 2461                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2462                 break;
 2463 
 2464         case LINUX_FIOGETOWN:
 2465                 args->cmd = FIOGETOWN;
 2466                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2467                 break;
 2468 
 2469         case LINUX_SIOCGPGRP:
 2470                 args->cmd = SIOCGPGRP;
 2471                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2472                 break;
 2473 
 2474         case LINUX_SIOCATMARK:
 2475                 args->cmd = SIOCATMARK;
 2476                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2477                 break;
 2478 
 2479         /* LINUX_SIOCGSTAMP */
 2480 
 2481         case LINUX_SIOCGIFCONF:
 2482                 error = linux_ifconf(td, (struct ifconf *)args->arg);
 2483                 break;
 2484 
 2485         case LINUX_SIOCGIFFLAGS:
 2486                 args->cmd = SIOCGIFFLAGS;
 2487                 error = linux_gifflags(td, ifp, (struct l_ifreq *)args->arg);
 2488                 break;
 2489 
 2490         case LINUX_SIOCGIFADDR:
 2491                 args->cmd = SIOCGIFADDR;
 2492                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2493                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2494                 break;
 2495 
 2496         case LINUX_SIOCSIFADDR:
 2497                 /* XXX probably doesn't work, included for completeness */
 2498                 args->cmd = SIOCSIFADDR;
 2499                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2500                 break;
 2501 
 2502         case LINUX_SIOCGIFDSTADDR:
 2503                 args->cmd = SIOCGIFDSTADDR;
 2504                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2505                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2506                 break;
 2507 
 2508         case LINUX_SIOCGIFBRDADDR:
 2509                 args->cmd = SIOCGIFBRDADDR;
 2510                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2511                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2512                 break;
 2513 
 2514         case LINUX_SIOCGIFNETMASK:
 2515                 args->cmd = SIOCGIFNETMASK;
 2516                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2517                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2518                 break;
 2519 
 2520         case LINUX_SIOCSIFNETMASK:
 2521                 error = ENOIOCTL;
 2522                 break;
 2523 
 2524         case LINUX_SIOCGIFMTU:
 2525                 args->cmd = SIOCGIFMTU;
 2526                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2527                 break;
 2528 
 2529         case LINUX_SIOCSIFMTU:
 2530                 args->cmd = SIOCSIFMTU;
 2531                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2532                 break;
 2533 
 2534         case LINUX_SIOCSIFNAME:
 2535                 error = ENOIOCTL;
 2536                 break;
 2537 
 2538         case LINUX_SIOCGIFHWADDR:
 2539                 error = linux_gifhwaddr(ifp, (struct l_ifreq *)args->arg);
 2540                 break;
 2541 
 2542         case LINUX_SIOCSIFHWADDR:
 2543                 error = ENOIOCTL;
 2544                 break;
 2545 
 2546         case LINUX_SIOCADDMULTI:
 2547                 args->cmd = SIOCADDMULTI;
 2548                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2549                 break;
 2550 
 2551         case LINUX_SIOCDELMULTI:
 2552                 args->cmd = SIOCDELMULTI;
 2553                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2554                 break;
 2555 
 2556         case LINUX_SIOCGIFINDEX:
 2557                 args->cmd = SIOCGIFINDEX;
 2558                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2559                 break;
 2560 
 2561         case LINUX_SIOCGIFCOUNT:
 2562                 error = 0;
 2563                 break;
 2564 
 2565         /*
 2566          * XXX This is slightly bogus, but these ioctls are currently
 2567          * XXX only used by the aironet (if_an) network driver.
 2568          */
 2569         case LINUX_SIOCDEVPRIVATE:
 2570                 args->cmd = SIOCGPRIVATE_0;
 2571                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2572                 break;
 2573 
 2574         case LINUX_SIOCDEVPRIVATE+1:
 2575                 args->cmd = SIOCGPRIVATE_1;
 2576                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2577                 break;
 2578         }
 2579 
 2580         if (ifp != NULL)
 2581                 /* restore the original interface name */
 2582                 copyout(lifname, (void *)args->arg, LINUX_IFNAMSIZ);
 2583 
 2584 #ifdef DEBUG
 2585         printf("%s(): returning %d\n", __func__, error);
 2586 #endif
 2587         return (error);
 2588 }
 2589 
 2590 /*
 2591  * Device private ioctl handler
 2592  */
 2593 static int
 2594 linux_ioctl_private(struct thread *td, struct linux_ioctl_args *args)
 2595 {
 2596         cap_rights_t rights;
 2597         struct file *fp;
 2598         int error, type;
 2599 
 2600         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 2601         if (error != 0)
 2602                 return (error);
 2603         type = fp->f_type;
 2604         fdrop(fp, td);
 2605         if (type == DTYPE_SOCKET)
 2606                 return (linux_ioctl_socket(td, args));
 2607         return (ENOIOCTL);
 2608 }
 2609 
 2610 /*
 2611  * DRM ioctl handler (sys/dev/drm)
 2612  */
 2613 static int
 2614 linux_ioctl_drm(struct thread *td, struct linux_ioctl_args *args)
 2615 {
 2616         args->cmd = SETDIR(args->cmd);
 2617         return sys_ioctl(td, (struct ioctl_args *)args);
 2618 }
 2619 
 2620 static int
 2621 linux_ioctl_sg(struct thread *td, struct linux_ioctl_args *args)
 2622 {
 2623         cap_rights_t rights;
 2624         struct file *fp;
 2625         u_long cmd;
 2626         int error;
 2627 
 2628         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 2629         if (error != 0) {
 2630                 printf("sg_linux_ioctl: fget returned %d\n", error);
 2631                 return (error);
 2632         }
 2633         cmd = args->cmd;
 2634 
 2635         error = (fo_ioctl(fp, cmd, (caddr_t)args->arg, td->td_ucred, td));
 2636         fdrop(fp, td);
 2637         return (error);
 2638 }
 2639 
 2640 /*
 2641  * Video4Linux (V4L) ioctl handler
 2642  */
 2643 static int
 2644 linux_to_bsd_v4l_tuner(struct l_video_tuner *lvt, struct video_tuner *vt)
 2645 {
 2646         vt->tuner = lvt->tuner;
 2647         strlcpy(vt->name, lvt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
 2648         vt->rangelow = lvt->rangelow;   /* possible long size conversion */
 2649         vt->rangehigh = lvt->rangehigh; /* possible long size conversion */
 2650         vt->flags = lvt->flags;
 2651         vt->mode = lvt->mode;
 2652         vt->signal = lvt->signal;
 2653         return (0);
 2654 }
 2655 
 2656 static int
 2657 bsd_to_linux_v4l_tuner(struct video_tuner *vt, struct l_video_tuner *lvt)
 2658 {
 2659         lvt->tuner = vt->tuner;
 2660         strlcpy(lvt->name, vt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
 2661         lvt->rangelow = vt->rangelow;   /* possible long size conversion */
 2662         lvt->rangehigh = vt->rangehigh; /* possible long size conversion */
 2663         lvt->flags = vt->flags;
 2664         lvt->mode = vt->mode;
 2665         lvt->signal = vt->signal;
 2666         return (0);
 2667 }
 2668 
 2669 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2670 static int
 2671 linux_to_bsd_v4l_clip(struct l_video_clip *lvc, struct video_clip *vc)
 2672 {
 2673         vc->x = lvc->x;
 2674         vc->y = lvc->y;
 2675         vc->width = lvc->width;
 2676         vc->height = lvc->height;
 2677         vc->next = PTRIN(lvc->next);    /* possible pointer size conversion */
 2678         return (0);
 2679 }
 2680 #endif
 2681 
 2682 static int
 2683 linux_to_bsd_v4l_window(struct l_video_window *lvw, struct video_window *vw)
 2684 {
 2685         vw->x = lvw->x;
 2686         vw->y = lvw->y;
 2687         vw->width = lvw->width;
 2688         vw->height = lvw->height;
 2689         vw->chromakey = lvw->chromakey;
 2690         vw->flags = lvw->flags;
 2691         vw->clips = PTRIN(lvw->clips);  /* possible pointer size conversion */
 2692         vw->clipcount = lvw->clipcount;
 2693         return (0);
 2694 }
 2695 
 2696 static int
 2697 bsd_to_linux_v4l_window(struct video_window *vw, struct l_video_window *lvw)
 2698 {
 2699         lvw->x = vw->x;
 2700         lvw->y = vw->y;
 2701         lvw->width = vw->width;
 2702         lvw->height = vw->height;
 2703         lvw->chromakey = vw->chromakey;
 2704         lvw->flags = vw->flags;
 2705         lvw->clips = PTROUT(vw->clips); /* possible pointer size conversion */
 2706         lvw->clipcount = vw->clipcount;
 2707         return (0);
 2708 }
 2709 
 2710 static int
 2711 linux_to_bsd_v4l_buffer(struct l_video_buffer *lvb, struct video_buffer *vb)
 2712 {
 2713         vb->base = PTRIN(lvb->base);    /* possible pointer size conversion */
 2714         vb->height = lvb->height;
 2715         vb->width = lvb->width;
 2716         vb->depth = lvb->depth;
 2717         vb->bytesperline = lvb->bytesperline;
 2718         return (0);
 2719 }
 2720 
 2721 static int
 2722 bsd_to_linux_v4l_buffer(struct video_buffer *vb, struct l_video_buffer *lvb)
 2723 {
 2724         lvb->base = PTROUT(vb->base);   /* possible pointer size conversion */
 2725         lvb->height = vb->height;
 2726         lvb->width = vb->width;
 2727         lvb->depth = vb->depth;
 2728         lvb->bytesperline = vb->bytesperline;
 2729         return (0);
 2730 }
 2731 
 2732 static int
 2733 linux_to_bsd_v4l_code(struct l_video_code *lvc, struct video_code *vc)
 2734 {
 2735         strlcpy(vc->loadwhat, lvc->loadwhat, LINUX_VIDEO_CODE_LOADWHAT_SIZE);
 2736         vc->datasize = lvc->datasize;
 2737         vc->data = PTRIN(lvc->data);    /* possible pointer size conversion */
 2738         return (0);
 2739 }
 2740 
 2741 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2742 static int
 2743 linux_v4l_clip_copy(void *lvc, struct video_clip **ppvc)
 2744 {
 2745         int error;
 2746         struct video_clip vclip;
 2747         struct l_video_clip l_vclip;
 2748 
 2749         error = copyin(lvc, &l_vclip, sizeof(l_vclip));
 2750         if (error) return (error);
 2751         linux_to_bsd_v4l_clip(&l_vclip, &vclip);
 2752         /* XXX: If there can be no concurrency: s/M_NOWAIT/M_WAITOK/ */
 2753         if ((*ppvc = malloc(sizeof(**ppvc), M_LINUX, M_NOWAIT)) == NULL)
 2754                 return (ENOMEM);    /* XXX: linux has no ENOMEM here */
 2755         memcpy(*ppvc, &vclip, sizeof(vclip));
 2756         (*ppvc)->next = NULL;
 2757         return (0);
 2758 }
 2759 
 2760 static int
 2761 linux_v4l_cliplist_free(struct video_window *vw)
 2762 {
 2763         struct video_clip **ppvc;
 2764         struct video_clip **ppvc_next;
 2765 
 2766         for (ppvc = &(vw->clips); *ppvc != NULL; ppvc = ppvc_next) {
 2767                 ppvc_next = &((*ppvc)->next);
 2768                 free(*ppvc, M_LINUX);
 2769         }
 2770         vw->clips = NULL;
 2771 
 2772         return (0);
 2773 }
 2774 
 2775 static int
 2776 linux_v4l_cliplist_copy(struct l_video_window *lvw, struct video_window *vw)
 2777 {
 2778         int error;
 2779         int clipcount;
 2780         void *plvc;
 2781         struct video_clip **ppvc;
 2782 
 2783         /*
 2784          * XXX: The cliplist is used to pass in a list of clipping
 2785          *      rectangles or, if clipcount == VIDEO_CLIP_BITMAP, a
 2786          *      clipping bitmap.  Some Linux apps, however, appear to
 2787          *      leave cliplist and clips uninitialized.  In any case,
 2788          *      the cliplist is not used by pwc(4), at the time of
 2789          *      writing, FreeBSD's only V4L driver.  When a driver
 2790          *      that uses the cliplist is developed, this code may
 2791          *      need re-examiniation.
 2792          */
 2793         error = 0;
 2794         clipcount = vw->clipcount;
 2795         if (clipcount == VIDEO_CLIP_BITMAP) {
 2796                 /*
 2797                  * In this case, the pointer (clips) is overloaded
 2798                  * to be a "void *" to a bitmap, therefore there
 2799                  * is no struct video_clip to copy now.
 2800                  */
 2801         } else if (clipcount > 0 && clipcount <= 16384) {
 2802                 /*
 2803                  * Clips points to list of clip rectangles, so
 2804                  * copy the list.
 2805                  *
 2806                  * XXX: Upper limit of 16384 was used here to try to
 2807                  *      avoid cases when clipcount and clips pointer
 2808                  *      are uninitialized and therefore have high random
 2809                  *      values, as is the case in the Linux Skype
 2810                  *      application.  The value 16384 was chosen as that
 2811                  *      is what is used in the Linux stradis(4) MPEG
 2812                  *      decoder driver, the only place we found an
 2813                  *      example of cliplist use.
 2814                  */
 2815                 plvc = PTRIN(lvw->clips);
 2816                 vw->clips = NULL;
 2817                 ppvc = &(vw->clips);
 2818                 while (clipcount-- > 0) {
 2819                         if (plvc == 0) {
 2820                                 error = EFAULT;
 2821                                 break;
 2822                         } else {
 2823                                 error = linux_v4l_clip_copy(plvc, ppvc);
 2824                                 if (error) {
 2825                                         linux_v4l_cliplist_free(vw);
 2826                                         break;
 2827                                 }
 2828                         }
 2829                         ppvc = &((*ppvc)->next);
 2830                         plvc = PTRIN(((struct l_video_clip *) plvc)->next);
 2831                 }
 2832         } else {
 2833                 /*
 2834                  * clipcount == 0 or negative (but not VIDEO_CLIP_BITMAP)
 2835                  * Force cliplist to null.
 2836                  */
 2837                 vw->clipcount = 0;
 2838                 vw->clips = NULL;
 2839         }
 2840         return (error);
 2841 }
 2842 #endif
 2843 
 2844 static int
 2845 linux_ioctl_v4l(struct thread *td, struct linux_ioctl_args *args)
 2846 {
 2847         cap_rights_t rights;
 2848         struct file *fp;
 2849         int error;
 2850         struct video_tuner vtun;
 2851         struct video_window vwin;
 2852         struct video_buffer vbuf;
 2853         struct video_code vcode;
 2854         struct l_video_tuner l_vtun;
 2855         struct l_video_window l_vwin;
 2856         struct l_video_buffer l_vbuf;
 2857         struct l_video_code l_vcode;
 2858 
 2859         switch (args->cmd & 0xffff) {
 2860         case LINUX_VIDIOCGCAP:          args->cmd = VIDIOCGCAP; break;
 2861         case LINUX_VIDIOCGCHAN:         args->cmd = VIDIOCGCHAN; break;
 2862         case LINUX_VIDIOCSCHAN:         args->cmd = VIDIOCSCHAN; break;
 2863 
 2864         case LINUX_VIDIOCGTUNER:
 2865                 error = fget(td, args->fd,
 2866                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 2867                 if (error != 0)
 2868                         return (error);
 2869                 error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
 2870                 if (error) {
 2871                         fdrop(fp, td);
 2872                         return (error);
 2873                 }
 2874                 linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
 2875                 error = fo_ioctl(fp, VIDIOCGTUNER, &vtun, td->td_ucred, td);
 2876                 if (!error) {
 2877                         bsd_to_linux_v4l_tuner(&vtun, &l_vtun);
 2878                         error = copyout(&l_vtun, (void *) args->arg,
 2879                             sizeof(l_vtun));
 2880                 }
 2881                 fdrop(fp, td);
 2882                 return (error);
 2883 
 2884         case LINUX_VIDIOCSTUNER:
 2885                 error = fget(td, args->fd,
 2886                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 2887                 if (error != 0)
 2888                         return (error);
 2889                 error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
 2890                 if (error) {
 2891                         fdrop(fp, td);
 2892                         return (error);
 2893                 }
 2894                 linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
 2895                 error = fo_ioctl(fp, VIDIOCSTUNER, &vtun, td->td_ucred, td);
 2896                 fdrop(fp, td);
 2897                 return (error);
 2898 
 2899         case LINUX_VIDIOCGPICT:         args->cmd = VIDIOCGPICT; break;
 2900         case LINUX_VIDIOCSPICT:         args->cmd = VIDIOCSPICT; break;
 2901         case LINUX_VIDIOCCAPTURE:       args->cmd = VIDIOCCAPTURE; break;
 2902 
 2903         case LINUX_VIDIOCGWIN:
 2904                 error = fget(td, args->fd,
 2905                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 2906                 if (error != 0)
 2907                         return (error);
 2908                 error = fo_ioctl(fp, VIDIOCGWIN, &vwin, td->td_ucred, td);
 2909                 if (!error) {
 2910                         bsd_to_linux_v4l_window(&vwin, &l_vwin);
 2911                         error = copyout(&l_vwin, (void *) args->arg,
 2912                             sizeof(l_vwin));
 2913                 }
 2914                 fdrop(fp, td);
 2915                 return (error);
 2916 
 2917         case LINUX_VIDIOCSWIN:
 2918                 error = fget(td, args->fd,
 2919                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 2920                 if (error != 0)
 2921                         return (error);
 2922                 error = copyin((void *) args->arg, &l_vwin, sizeof(l_vwin));
 2923                 if (error) {
 2924                         fdrop(fp, td);
 2925                         return (error);
 2926                 }
 2927                 linux_to_bsd_v4l_window(&l_vwin, &vwin);
 2928 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2929                 error = linux_v4l_cliplist_copy(&l_vwin, &vwin);
 2930                 if (error) {
 2931                         fdrop(fp, td);
 2932                         return (error);
 2933                 }
 2934 #endif
 2935                 error = fo_ioctl(fp, VIDIOCSWIN, &vwin, td->td_ucred, td);
 2936                 fdrop(fp, td);
 2937 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2938                 linux_v4l_cliplist_free(&vwin);
 2939 #endif
 2940                 return (error);
 2941 
 2942         case LINUX_VIDIOCGFBUF:
 2943                 error = fget(td, args->fd,
 2944                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 2945                 if (error != 0)
 2946                         return (error);
 2947                 error = fo_ioctl(fp, VIDIOCGFBUF, &vbuf, td->td_ucred, td);
 2948                 if (!error) {
 2949                         bsd_to_linux_v4l_buffer(&vbuf, &l_vbuf);
 2950                         error = copyout(&l_vbuf, (void *) args->arg,
 2951                             sizeof(l_vbuf));
 2952                 }
 2953                 fdrop(fp, td);
 2954                 return (error);
 2955 
 2956         case LINUX_VIDIOCSFBUF:
 2957                 error = fget(td, args->fd,
 2958                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 2959                 if (error != 0)
 2960                         return (error);
 2961                 error = copyin((void *) args->arg, &l_vbuf, sizeof(l_vbuf));
 2962                 if (error) {
 2963                         fdrop(fp, td);
 2964                         return (error);
 2965                 }
 2966                 linux_to_bsd_v4l_buffer(&l_vbuf, &vbuf);
 2967                 error = fo_ioctl(fp, VIDIOCSFBUF, &vbuf, td->td_ucred, td);
 2968                 fdrop(fp, td);
 2969                 return (error);
 2970 
 2971         case LINUX_VIDIOCKEY:           args->cmd = VIDIOCKEY; break;
 2972         case LINUX_VIDIOCGFREQ:         args->cmd = VIDIOCGFREQ; break;
 2973         case LINUX_VIDIOCSFREQ:         args->cmd = VIDIOCSFREQ; break;
 2974         case LINUX_VIDIOCGAUDIO:        args->cmd = VIDIOCGAUDIO; break;
 2975         case LINUX_VIDIOCSAUDIO:        args->cmd = VIDIOCSAUDIO; break;
 2976         case LINUX_VIDIOCSYNC:          args->cmd = VIDIOCSYNC; break;
 2977         case LINUX_VIDIOCMCAPTURE:      args->cmd = VIDIOCMCAPTURE; break;
 2978         case LINUX_VIDIOCGMBUF:         args->cmd = VIDIOCGMBUF; break;
 2979         case LINUX_VIDIOCGUNIT:         args->cmd = VIDIOCGUNIT; break;
 2980         case LINUX_VIDIOCGCAPTURE:      args->cmd = VIDIOCGCAPTURE; break;
 2981         case LINUX_VIDIOCSCAPTURE:      args->cmd = VIDIOCSCAPTURE; break;
 2982         case LINUX_VIDIOCSPLAYMODE:     args->cmd = VIDIOCSPLAYMODE; break;
 2983         case LINUX_VIDIOCSWRITEMODE:    args->cmd = VIDIOCSWRITEMODE; break;
 2984         case LINUX_VIDIOCGPLAYINFO:     args->cmd = VIDIOCGPLAYINFO; break;
 2985 
 2986         case LINUX_VIDIOCSMICROCODE:
 2987                 error = fget(td, args->fd,
 2988                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 2989                 if (error != 0)
 2990                         return (error);
 2991                 error = copyin((void *) args->arg, &l_vcode, sizeof(l_vcode));
 2992                 if (error) {
 2993                         fdrop(fp, td);
 2994                         return (error);
 2995                 }
 2996                 linux_to_bsd_v4l_code(&l_vcode, &vcode);
 2997                 error = fo_ioctl(fp, VIDIOCSMICROCODE, &vcode, td->td_ucred, td);
 2998                 fdrop(fp, td);
 2999                 return (error);
 3000 
 3001         case LINUX_VIDIOCGVBIFMT:       args->cmd = VIDIOCGVBIFMT; break;
 3002         case LINUX_VIDIOCSVBIFMT:       args->cmd = VIDIOCSVBIFMT; break;
 3003         default:                        return (ENOIOCTL);
 3004         }
 3005 
 3006         error = sys_ioctl(td, (struct ioctl_args *)args);
 3007         return (error);
 3008 }
 3009 
 3010 /*
 3011  * Special ioctl handler
 3012  */
 3013 static int
 3014 linux_ioctl_special(struct thread *td, struct linux_ioctl_args *args)
 3015 {
 3016         int error;
 3017 
 3018         switch (args->cmd) {
 3019         case LINUX_SIOCGIFADDR:
 3020                 args->cmd = SIOCGIFADDR;
 3021                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3022                 break;
 3023         case LINUX_SIOCSIFADDR:
 3024                 args->cmd = SIOCSIFADDR;
 3025                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3026                 break;
 3027         case LINUX_SIOCGIFFLAGS:
 3028                 args->cmd = SIOCGIFFLAGS;
 3029                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3030                 break;
 3031         default:
 3032                 error = ENOIOCTL;
 3033         }
 3034 
 3035         return (error);
 3036 }
 3037 
 3038 static int
 3039 linux_to_bsd_v4l2_standard(struct l_v4l2_standard *lvstd, struct v4l2_standard *vstd)
 3040 {
 3041         vstd->index = lvstd->index;
 3042         vstd->id = lvstd->id;
 3043         memcpy(&vstd->name, &lvstd->name, sizeof(*lvstd) - offsetof(struct l_v4l2_standard, name));
 3044         return (0);
 3045 }
 3046 
 3047 static int
 3048 bsd_to_linux_v4l2_standard(struct v4l2_standard *vstd, struct l_v4l2_standard *lvstd)
 3049 {
 3050         lvstd->index = vstd->index;
 3051         lvstd->id = vstd->id;
 3052         memcpy(&lvstd->name, &vstd->name, sizeof(*lvstd) - offsetof(struct l_v4l2_standard, name));
 3053         return (0);
 3054 }
 3055 
 3056 static int
 3057 linux_to_bsd_v4l2_buffer(struct l_v4l2_buffer *lvb, struct v4l2_buffer *vb)
 3058 {
 3059         vb->index = lvb->index;
 3060         vb->type = lvb->type;
 3061         vb->bytesused = lvb->bytesused;
 3062         vb->flags = lvb->flags;
 3063         vb->field = lvb->field;
 3064         vb->timestamp.tv_sec = lvb->timestamp.tv_sec;
 3065         vb->timestamp.tv_usec = lvb->timestamp.tv_usec;
 3066         memcpy(&vb->timecode, &lvb->timecode, sizeof (lvb->timecode));
 3067         vb->sequence = lvb->sequence;
 3068         vb->memory = lvb->memory;
 3069         if (lvb->memory == V4L2_MEMORY_USERPTR)
 3070                 /* possible pointer size conversion */
 3071                 vb->m.userptr = (unsigned long)PTRIN(lvb->m.userptr);
 3072         else
 3073                 vb->m.offset = lvb->m.offset;
 3074         vb->length = lvb->length;
 3075         vb->input = lvb->input;
 3076         vb->reserved = lvb->reserved;
 3077         return (0);
 3078 }
 3079 
 3080 static int
 3081 bsd_to_linux_v4l2_buffer(struct v4l2_buffer *vb, struct l_v4l2_buffer *lvb)
 3082 {
 3083         lvb->index = vb->index;
 3084         lvb->type = vb->type;
 3085         lvb->bytesused = vb->bytesused;
 3086         lvb->flags = vb->flags;
 3087         lvb->field = vb->field;
 3088         lvb->timestamp.tv_sec = vb->timestamp.tv_sec;
 3089         lvb->timestamp.tv_usec = vb->timestamp.tv_usec;
 3090         memcpy(&lvb->timecode, &vb->timecode, sizeof (vb->timecode));
 3091         lvb->sequence = vb->sequence;
 3092         lvb->memory = vb->memory;
 3093         if (vb->memory == V4L2_MEMORY_USERPTR)
 3094                 /* possible pointer size conversion */
 3095                 lvb->m.userptr = PTROUT(vb->m.userptr);
 3096         else
 3097                 lvb->m.offset = vb->m.offset;
 3098         lvb->length = vb->length;
 3099         lvb->input = vb->input;
 3100         lvb->reserved = vb->reserved;
 3101         return (0);
 3102 }
 3103 
 3104 static int
 3105 linux_to_bsd_v4l2_format(struct l_v4l2_format *lvf, struct v4l2_format *vf)
 3106 {
 3107         vf->type = lvf->type;
 3108         if (lvf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
 3109 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3110             || lvf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3111 #endif
 3112             )
 3113                 /*
 3114                  * XXX TODO - needs 32 -> 64 bit conversion:
 3115                  * (unused by webcams?)
 3116                  */
 3117                 return EINVAL;
 3118         memcpy(&vf->fmt, &lvf->fmt, sizeof(vf->fmt));
 3119         return 0;
 3120 }
 3121 
 3122 static int
 3123 bsd_to_linux_v4l2_format(struct v4l2_format *vf, struct l_v4l2_format *lvf)
 3124 {
 3125         lvf->type = vf->type;
 3126         if (vf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
 3127 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3128             || vf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3129 #endif
 3130             )
 3131                 /*
 3132                  * XXX TODO - needs 32 -> 64 bit conversion:
 3133                  * (unused by webcams?)
 3134                  */
 3135                 return EINVAL;
 3136         memcpy(&lvf->fmt, &vf->fmt, sizeof(vf->fmt));
 3137         return 0;
 3138 }
 3139 static int
 3140 linux_ioctl_v4l2(struct thread *td, struct linux_ioctl_args *args)
 3141 {
 3142         cap_rights_t rights;
 3143         struct file *fp;
 3144         int error;
 3145         struct v4l2_format vformat;
 3146         struct l_v4l2_format l_vformat;
 3147         struct v4l2_standard vstd;
 3148         struct l_v4l2_standard l_vstd;
 3149         struct l_v4l2_buffer l_vbuf;
 3150         struct v4l2_buffer vbuf;
 3151         struct v4l2_input vinp;
 3152 
 3153         switch (args->cmd & 0xffff) {
 3154         case LINUX_VIDIOC_RESERVED:
 3155         case LINUX_VIDIOC_LOG_STATUS:
 3156                 if ((args->cmd & IOC_DIRMASK) != LINUX_IOC_VOID)
 3157                         return ENOIOCTL;
 3158                 args->cmd = (args->cmd & 0xffff) | IOC_VOID;
 3159                 break;
 3160 
 3161         case LINUX_VIDIOC_OVERLAY:
 3162         case LINUX_VIDIOC_STREAMON:
 3163         case LINUX_VIDIOC_STREAMOFF:
 3164         case LINUX_VIDIOC_S_STD:
 3165         case LINUX_VIDIOC_S_TUNER:
 3166         case LINUX_VIDIOC_S_AUDIO:
 3167         case LINUX_VIDIOC_S_AUDOUT:
 3168         case LINUX_VIDIOC_S_MODULATOR:
 3169         case LINUX_VIDIOC_S_FREQUENCY:
 3170         case LINUX_VIDIOC_S_CROP:
 3171         case LINUX_VIDIOC_S_JPEGCOMP:
 3172         case LINUX_VIDIOC_S_PRIORITY:
 3173         case LINUX_VIDIOC_DBG_S_REGISTER:
 3174         case LINUX_VIDIOC_S_HW_FREQ_SEEK:
 3175         case LINUX_VIDIOC_SUBSCRIBE_EVENT:
 3176         case LINUX_VIDIOC_UNSUBSCRIBE_EVENT:
 3177                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_IN;
 3178                 break;
 3179 
 3180         case LINUX_VIDIOC_QUERYCAP:
 3181         case LINUX_VIDIOC_G_STD:
 3182         case LINUX_VIDIOC_G_AUDIO:
 3183         case LINUX_VIDIOC_G_INPUT:
 3184         case LINUX_VIDIOC_G_OUTPUT:
 3185         case LINUX_VIDIOC_G_AUDOUT:
 3186         case LINUX_VIDIOC_G_JPEGCOMP:
 3187         case LINUX_VIDIOC_QUERYSTD:
 3188         case LINUX_VIDIOC_G_PRIORITY:
 3189         case LINUX_VIDIOC_QUERY_DV_PRESET:
 3190                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_OUT;
 3191                 break;
 3192 
 3193         case LINUX_VIDIOC_ENUM_FMT:
 3194         case LINUX_VIDIOC_REQBUFS:
 3195         case LINUX_VIDIOC_G_PARM:
 3196         case LINUX_VIDIOC_S_PARM:
 3197         case LINUX_VIDIOC_G_CTRL:
 3198         case LINUX_VIDIOC_S_CTRL:
 3199         case LINUX_VIDIOC_G_TUNER:
 3200         case LINUX_VIDIOC_QUERYCTRL:
 3201         case LINUX_VIDIOC_QUERYMENU:
 3202         case LINUX_VIDIOC_S_INPUT:
 3203         case LINUX_VIDIOC_S_OUTPUT:
 3204         case LINUX_VIDIOC_ENUMOUTPUT:
 3205         case LINUX_VIDIOC_G_MODULATOR:
 3206         case LINUX_VIDIOC_G_FREQUENCY:
 3207         case LINUX_VIDIOC_CROPCAP:
 3208         case LINUX_VIDIOC_G_CROP:
 3209         case LINUX_VIDIOC_ENUMAUDIO:
 3210         case LINUX_VIDIOC_ENUMAUDOUT:
 3211         case LINUX_VIDIOC_G_SLICED_VBI_CAP:
 3212 #ifdef VIDIOC_ENUM_FRAMESIZES
 3213         case LINUX_VIDIOC_ENUM_FRAMESIZES:
 3214         case LINUX_VIDIOC_ENUM_FRAMEINTERVALS:
 3215         case LINUX_VIDIOC_ENCODER_CMD:
 3216         case LINUX_VIDIOC_TRY_ENCODER_CMD:
 3217 #endif
 3218         case LINUX_VIDIOC_DBG_G_REGISTER:
 3219         case LINUX_VIDIOC_DBG_G_CHIP_IDENT:
 3220         case LINUX_VIDIOC_ENUM_DV_PRESETS:
 3221         case LINUX_VIDIOC_S_DV_PRESET:
 3222         case LINUX_VIDIOC_G_DV_PRESET:
 3223         case LINUX_VIDIOC_S_DV_TIMINGS:
 3224         case LINUX_VIDIOC_G_DV_TIMINGS:
 3225                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
 3226                 break;
 3227 
 3228         case LINUX_VIDIOC_G_FMT:
 3229         case LINUX_VIDIOC_S_FMT:
 3230         case LINUX_VIDIOC_TRY_FMT:
 3231                 error = copyin((void *)args->arg, &l_vformat, sizeof(l_vformat));
 3232                 if (error)
 3233                         return (error);
 3234                 error = fget(td, args->fd,
 3235                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3236                 if (error)
 3237                         return (error);
 3238                 if (linux_to_bsd_v4l2_format(&l_vformat, &vformat) != 0)
 3239                         error = EINVAL;
 3240                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_G_FMT)
 3241                         error = fo_ioctl(fp, VIDIOC_G_FMT, &vformat,
 3242                             td->td_ucred, td);
 3243                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_S_FMT)
 3244                         error = fo_ioctl(fp, VIDIOC_S_FMT, &vformat,
 3245                             td->td_ucred, td);
 3246                 else
 3247                         error = fo_ioctl(fp, VIDIOC_TRY_FMT, &vformat,
 3248                             td->td_ucred, td);
 3249                 bsd_to_linux_v4l2_format(&vformat, &l_vformat);
 3250                 copyout(&l_vformat, (void *)args->arg, sizeof(l_vformat));
 3251                 fdrop(fp, td);
 3252                 return (error);
 3253 
 3254         case LINUX_VIDIOC_ENUMSTD:
 3255                 error = copyin((void *)args->arg, &l_vstd, sizeof(l_vstd));
 3256                 if (error)
 3257                         return (error);
 3258                 linux_to_bsd_v4l2_standard(&l_vstd, &vstd);
 3259                 error = fget(td, args->fd,
 3260                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3261                 if (error)
 3262                         return (error);
 3263                 error = fo_ioctl(fp, VIDIOC_ENUMSTD, (caddr_t)&vstd,
 3264                     td->td_ucred, td);
 3265                 if (error) {
 3266                         fdrop(fp, td);
 3267                         return (error);
 3268                 }
 3269                 bsd_to_linux_v4l2_standard(&vstd, &l_vstd);
 3270                 error = copyout(&l_vstd, (void *)args->arg, sizeof(l_vstd));
 3271                 fdrop(fp, td);
 3272                 return (error);
 3273 
 3274         case LINUX_VIDIOC_ENUMINPUT:
 3275                 /*
 3276                  * The Linux struct l_v4l2_input differs only in size,
 3277                  * it has no padding at the end.
 3278                  */
 3279                 error = copyin((void *)args->arg, &vinp,
 3280                                 sizeof(struct l_v4l2_input));
 3281                 if (error != 0)
 3282                         return (error);
 3283                 error = fget(td, args->fd,
 3284                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3285                 if (error != 0)
 3286                         return (error);
 3287                 error = fo_ioctl(fp, VIDIOC_ENUMINPUT, (caddr_t)&vinp,
 3288                     td->td_ucred, td);
 3289                 if (error) {
 3290                         fdrop(fp, td);
 3291                         return (error);
 3292                 }
 3293                 error = copyout(&vinp, (void *)args->arg,
 3294                                 sizeof(struct l_v4l2_input));
 3295                 fdrop(fp, td);
 3296                 return (error);
 3297 
 3298         case LINUX_VIDIOC_QUERYBUF:
 3299         case LINUX_VIDIOC_QBUF:
 3300         case LINUX_VIDIOC_DQBUF:
 3301                 error = copyin((void *)args->arg, &l_vbuf, sizeof(l_vbuf));
 3302                 if (error)
 3303                         return (error);
 3304                 error = fget(td, args->fd,
 3305                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3306                 if (error)
 3307                         return (error);
 3308                 linux_to_bsd_v4l2_buffer(&l_vbuf, &vbuf);
 3309                 if ((args->cmd & 0xffff) == LINUX_VIDIOC_QUERYBUF)
 3310                         error = fo_ioctl(fp, VIDIOC_QUERYBUF, &vbuf,
 3311                             td->td_ucred, td);
 3312                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_QBUF)
 3313                         error = fo_ioctl(fp, VIDIOC_QBUF, &vbuf,
 3314                             td->td_ucred, td);
 3315                 else
 3316                         error = fo_ioctl(fp, VIDIOC_DQBUF, &vbuf,
 3317                             td->td_ucred, td);
 3318                 bsd_to_linux_v4l2_buffer(&vbuf, &l_vbuf);
 3319                 copyout(&l_vbuf, (void *)args->arg, sizeof(l_vbuf));
 3320                 fdrop(fp, td);
 3321                 return (error);
 3322 
 3323         /*
 3324          * XXX TODO - these need 32 -> 64 bit conversion:
 3325          * (are any of them needed for webcams?)
 3326          */
 3327         case LINUX_VIDIOC_G_FBUF:
 3328         case LINUX_VIDIOC_S_FBUF:
 3329 
 3330         case LINUX_VIDIOC_G_EXT_CTRLS:
 3331         case LINUX_VIDIOC_S_EXT_CTRLS:
 3332         case LINUX_VIDIOC_TRY_EXT_CTRLS:
 3333 
 3334         case LINUX_VIDIOC_DQEVENT:
 3335 
 3336         default:                        return (ENOIOCTL);
 3337         }
 3338 
 3339         error = sys_ioctl(td, (struct ioctl_args *)args);
 3340         return (error);
 3341 }
 3342 
 3343 /*
 3344  * Support for emulators/linux-libusb. This port uses FBSD_LUSB* macros
 3345  * instead of USB* ones. This lets us to provide correct values for cmd.
 3346  * 0xffffffe0 -- 0xffffffff range seemed to be the least collision-prone.
 3347  */
 3348 static int
 3349 linux_ioctl_fbsd_usb(struct thread *td, struct linux_ioctl_args *args)
 3350 {
 3351         int error;
 3352 
 3353         error = 0;
 3354         switch (args->cmd) {
 3355         case FBSD_LUSB_DEVICEENUMERATE:
 3356                 args->cmd = USB_DEVICEENUMERATE;
 3357                 break;
 3358         case FBSD_LUSB_DEV_QUIRK_ADD:
 3359                 args->cmd = USB_DEV_QUIRK_ADD;
 3360                 break;
 3361         case FBSD_LUSB_DEV_QUIRK_GET:
 3362                 args->cmd = USB_DEV_QUIRK_GET;
 3363                 break;
 3364         case FBSD_LUSB_DEV_QUIRK_REMOVE:
 3365                 args->cmd = USB_DEV_QUIRK_REMOVE;
 3366                 break;
 3367         case FBSD_LUSB_DO_REQUEST:
 3368                 args->cmd = USB_DO_REQUEST;
 3369                 break;
 3370         case FBSD_LUSB_FS_CLEAR_STALL_SYNC:
 3371                 args->cmd = USB_FS_CLEAR_STALL_SYNC;
 3372                 break;
 3373         case FBSD_LUSB_FS_CLOSE:
 3374                 args->cmd = USB_FS_CLOSE;
 3375                 break;
 3376         case FBSD_LUSB_FS_COMPLETE:
 3377                 args->cmd = USB_FS_COMPLETE;
 3378                 break;
 3379         case FBSD_LUSB_FS_INIT:
 3380                 args->cmd = USB_FS_INIT;
 3381                 break;
 3382         case FBSD_LUSB_FS_OPEN:
 3383                 args->cmd = USB_FS_OPEN;
 3384                 break;
 3385         case FBSD_LUSB_FS_START:
 3386                 args->cmd = USB_FS_START;
 3387                 break;
 3388         case FBSD_LUSB_FS_STOP:
 3389                 args->cmd = USB_FS_STOP;
 3390                 break;
 3391         case FBSD_LUSB_FS_UNINIT:
 3392                 args->cmd = USB_FS_UNINIT;
 3393                 break;
 3394         case FBSD_LUSB_GET_CONFIG:
 3395                 args->cmd = USB_GET_CONFIG;
 3396                 break;
 3397         case FBSD_LUSB_GET_DEVICEINFO:
 3398                 args->cmd = USB_GET_DEVICEINFO;
 3399                 break;
 3400         case FBSD_LUSB_GET_DEVICE_DESC:
 3401                 args->cmd = USB_GET_DEVICE_DESC;
 3402                 break;
 3403         case FBSD_LUSB_GET_FULL_DESC:
 3404                 args->cmd = USB_GET_FULL_DESC;
 3405                 break;
 3406         case FBSD_LUSB_GET_IFACE_DRIVER:
 3407                 args->cmd = USB_GET_IFACE_DRIVER;
 3408                 break;
 3409         case FBSD_LUSB_GET_PLUGTIME:
 3410                 args->cmd = USB_GET_PLUGTIME;
 3411                 break;
 3412         case FBSD_LUSB_GET_POWER_MODE:
 3413                 args->cmd = USB_GET_POWER_MODE;
 3414                 break;
 3415         case FBSD_LUSB_GET_REPORT_DESC:
 3416                 args->cmd = USB_GET_REPORT_DESC;
 3417                 break;
 3418         case FBSD_LUSB_GET_REPORT_ID:
 3419                 args->cmd = USB_GET_REPORT_ID;
 3420                 break;
 3421         case FBSD_LUSB_GET_TEMPLATE:
 3422                 args->cmd = USB_GET_TEMPLATE;
 3423                 break;
 3424         case FBSD_LUSB_IFACE_DRIVER_ACTIVE:
 3425                 args->cmd = USB_IFACE_DRIVER_ACTIVE;
 3426                 break;
 3427         case FBSD_LUSB_IFACE_DRIVER_DETACH:
 3428                 args->cmd = USB_IFACE_DRIVER_DETACH;
 3429                 break;
 3430         case FBSD_LUSB_QUIRK_NAME_GET:
 3431                 args->cmd = USB_QUIRK_NAME_GET;
 3432                 break;
 3433         case FBSD_LUSB_READ_DIR:
 3434                 args->cmd = USB_READ_DIR;
 3435                 break;
 3436         case FBSD_LUSB_SET_ALTINTERFACE:
 3437                 args->cmd = USB_SET_ALTINTERFACE;
 3438                 break;
 3439         case FBSD_LUSB_SET_CONFIG:
 3440                 args->cmd = USB_SET_CONFIG;
 3441                 break;
 3442         case FBSD_LUSB_SET_IMMED:
 3443                 args->cmd = USB_SET_IMMED;
 3444                 break;
 3445         case FBSD_LUSB_SET_POWER_MODE:
 3446                 args->cmd = USB_SET_POWER_MODE;
 3447                 break;
 3448         case FBSD_LUSB_SET_TEMPLATE:
 3449                 args->cmd = USB_SET_TEMPLATE;
 3450                 break;
 3451         case FBSD_LUSB_FS_OPEN_STREAM:
 3452                 args->cmd = USB_FS_OPEN_STREAM;
 3453                 break;
 3454         case FBSD_LUSB_GET_DEV_PORT_PATH:
 3455                 args->cmd = USB_GET_DEV_PORT_PATH;
 3456                 break;
 3457         case FBSD_LUSB_GET_POWER_USAGE:
 3458                 args->cmd = USB_GET_POWER_USAGE;
 3459                 break;
 3460         default:
 3461                 error = ENOIOCTL;
 3462         }
 3463         if (error != ENOIOCTL)
 3464                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3465         return (error);
 3466 }
 3467 
 3468 /*
 3469  * main ioctl syscall function
 3470  */
 3471 
 3472 int
 3473 linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
 3474 {
 3475         cap_rights_t rights;
 3476         struct file *fp;
 3477         struct handler_element *he;
 3478         int error, cmd;
 3479 
 3480 #ifdef DEBUG
 3481         if (ldebug(ioctl))
 3482                 printf(ARGS(ioctl, "%d, %04lx, *"), args->fd,
 3483                     (unsigned long)args->cmd);
 3484 #endif
 3485 
 3486         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 3487         if (error != 0)
 3488                 return (error);
 3489         if ((fp->f_flag & (FREAD|FWRITE)) == 0) {
 3490                 fdrop(fp, td);
 3491                 return (EBADF);
 3492         }
 3493 
 3494         /* Iterate over the ioctl handlers */
 3495         cmd = args->cmd & 0xffff;
 3496         sx_slock(&linux_ioctl_sx);
 3497         mtx_lock(&Giant);
 3498         TAILQ_FOREACH(he, &handlers, list) {
 3499                 if (cmd >= he->low && cmd <= he->high) {
 3500                         error = (*he->func)(td, args);
 3501                         if (error != ENOIOCTL) {
 3502                                 mtx_unlock(&Giant);
 3503                                 sx_sunlock(&linux_ioctl_sx);
 3504                                 fdrop(fp, td);
 3505                                 return (error);
 3506                         }
 3507                 }
 3508         }
 3509         mtx_unlock(&Giant);
 3510         sx_sunlock(&linux_ioctl_sx);
 3511         fdrop(fp, td);
 3512 
 3513         linux_msg(td, "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
 3514             args->fd, (int)(args->cmd & 0xffff),
 3515             (int)(args->cmd & 0xff00) >> 8, (int)(args->cmd & 0xff));
 3516 
 3517         return (EINVAL);
 3518 }
 3519 
 3520 int
 3521 linux_ioctl_register_handler(struct linux_ioctl_handler *h)
 3522 {
 3523         struct handler_element *he, *cur;
 3524 
 3525         if (h == NULL || h->func == NULL)
 3526                 return (EINVAL);
 3527 
 3528         /*
 3529          * Reuse the element if the handler is already on the list, otherwise
 3530          * create a new element.
 3531          */
 3532         sx_xlock(&linux_ioctl_sx);
 3533         TAILQ_FOREACH(he, &handlers, list) {
 3534                 if (he->func == h->func)
 3535                         break;
 3536         }
 3537         if (he == NULL) {
 3538                 he = malloc(sizeof(*he),
 3539                     M_LINUX, M_WAITOK);
 3540                 he->func = h->func;
 3541         } else
 3542                 TAILQ_REMOVE(&handlers, he, list);
 3543 
 3544         /* Initialize range information. */
 3545         he->low = h->low;
 3546         he->high = h->high;
 3547         he->span = h->high - h->low + 1;
 3548 
 3549         /* Add the element to the list, sorted on span. */
 3550         TAILQ_FOREACH(cur, &handlers, list) {
 3551                 if (cur->span > he->span) {
 3552                         TAILQ_INSERT_BEFORE(cur, he, list);
 3553                         sx_xunlock(&linux_ioctl_sx);
 3554                         return (0);
 3555                 }
 3556         }
 3557         TAILQ_INSERT_TAIL(&handlers, he, list);
 3558         sx_xunlock(&linux_ioctl_sx);
 3559 
 3560         return (0);
 3561 }
 3562 
 3563 int
 3564 linux_ioctl_unregister_handler(struct linux_ioctl_handler *h)
 3565 {
 3566         struct handler_element *he;
 3567 
 3568         if (h == NULL || h->func == NULL)
 3569                 return (EINVAL);
 3570 
 3571         sx_xlock(&linux_ioctl_sx);
 3572         TAILQ_FOREACH(he, &handlers, list) {
 3573                 if (he->func == h->func) {
 3574                         TAILQ_REMOVE(&handlers, he, list);
 3575                         sx_xunlock(&linux_ioctl_sx);
 3576                         free(he, M_LINUX);
 3577                         return (0);
 3578                 }
 3579         }
 3580         sx_xunlock(&linux_ioctl_sx);
 3581 
 3582         return (EINVAL);
 3583 }

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