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: stable/10/sys/compat/linux/linux_ioctl.c 332064 2018-04-05 12:54:10Z emaste $");
   33 
   34 #include <sys/param.h>
   35 #include <sys/systm.h>
   36 #include <sys/sysproto.h>
   37 #include <sys/capsicum.h>
   38 #include <sys/cdio.h>
   39 #include <sys/dvdio.h>
   40 #include <sys/conf.h>
   41 #include <sys/disk.h>
   42 #include <sys/consio.h>
   43 #include <sys/ctype.h>
   44 #include <sys/fcntl.h>
   45 #include <sys/file.h>
   46 #include <sys/filedesc.h>
   47 #include <sys/filio.h>
   48 #include <sys/jail.h>
   49 #include <sys/kbio.h>
   50 #include <sys/kernel.h>
   51 #include <sys/linker_set.h>
   52 #include <sys/lock.h>
   53 #include <sys/malloc.h>
   54 #include <sys/proc.h>
   55 #include <sys/sbuf.h>
   56 #include <sys/socket.h>
   57 #include <sys/sockio.h>
   58 #include <sys/soundcard.h>
   59 #include <sys/stdint.h>
   60 #include <sys/sx.h>
   61 #include <sys/sysctl.h>
   62 #include <sys/tty.h>
   63 #include <sys/uio.h>
   64 #include <sys/types.h>
   65 #include <sys/mman.h>
   66 #include <sys/resourcevar.h>
   67 
   68 #include <net/if.h>
   69 #include <net/if_dl.h>
   70 #include <net/if_types.h>
   71 
   72 #include <dev/usb/usb_ioctl.h>
   73 
   74 #ifdef COMPAT_LINUX32
   75 #include <machine/../linux32/linux.h>
   76 #include <machine/../linux32/linux32_proto.h>
   77 #else
   78 #include <machine/../linux/linux.h>
   79 #include <machine/../linux/linux_proto.h>
   80 #endif
   81 
   82 #include <compat/linux/linux_ioctl.h>
   83 #include <compat/linux/linux_mib.h>
   84 #include <compat/linux/linux_socket.h>
   85 #include <compat/linux/linux_util.h>
   86 
   87 #include <contrib/v4l/videodev.h>
   88 #include <compat/linux/linux_videodev_compat.h>
   89 
   90 #include <contrib/v4l/videodev2.h>
   91 #include <compat/linux/linux_videodev2_compat.h>
   92 
   93 #include <cam/scsi/scsi_sg.h>
   94 
   95 CTASSERT(LINUX_IFNAMSIZ == IFNAMSIZ);
   96 
   97 static linux_ioctl_function_t linux_ioctl_cdrom;
   98 static linux_ioctl_function_t linux_ioctl_vfat;
   99 static linux_ioctl_function_t linux_ioctl_console;
  100 static linux_ioctl_function_t linux_ioctl_hdio;
  101 static linux_ioctl_function_t linux_ioctl_disk;
  102 static linux_ioctl_function_t linux_ioctl_socket;
  103 static linux_ioctl_function_t linux_ioctl_sound;
  104 static linux_ioctl_function_t linux_ioctl_termio;
  105 static linux_ioctl_function_t linux_ioctl_private;
  106 static linux_ioctl_function_t linux_ioctl_drm;
  107 static linux_ioctl_function_t linux_ioctl_sg;
  108 static linux_ioctl_function_t linux_ioctl_v4l;
  109 static linux_ioctl_function_t linux_ioctl_v4l2;
  110 static linux_ioctl_function_t linux_ioctl_special;
  111 static linux_ioctl_function_t linux_ioctl_fbsd_usb;
  112 
  113 static struct linux_ioctl_handler cdrom_handler =
  114 { linux_ioctl_cdrom, LINUX_IOCTL_CDROM_MIN, LINUX_IOCTL_CDROM_MAX };
  115 static struct linux_ioctl_handler vfat_handler =
  116 { linux_ioctl_vfat, LINUX_IOCTL_VFAT_MIN, LINUX_IOCTL_VFAT_MAX };
  117 static struct linux_ioctl_handler console_handler =
  118 { linux_ioctl_console, LINUX_IOCTL_CONSOLE_MIN, LINUX_IOCTL_CONSOLE_MAX };
  119 static struct linux_ioctl_handler hdio_handler =
  120 { linux_ioctl_hdio, LINUX_IOCTL_HDIO_MIN, LINUX_IOCTL_HDIO_MAX };
  121 static struct linux_ioctl_handler disk_handler =
  122 { linux_ioctl_disk, LINUX_IOCTL_DISK_MIN, LINUX_IOCTL_DISK_MAX };
  123 static struct linux_ioctl_handler socket_handler =
  124 { linux_ioctl_socket, LINUX_IOCTL_SOCKET_MIN, LINUX_IOCTL_SOCKET_MAX };
  125 static struct linux_ioctl_handler sound_handler =
  126 { linux_ioctl_sound, LINUX_IOCTL_SOUND_MIN, LINUX_IOCTL_SOUND_MAX };
  127 static struct linux_ioctl_handler termio_handler =
  128 { linux_ioctl_termio, LINUX_IOCTL_TERMIO_MIN, LINUX_IOCTL_TERMIO_MAX };
  129 static struct linux_ioctl_handler private_handler =
  130 { linux_ioctl_private, LINUX_IOCTL_PRIVATE_MIN, LINUX_IOCTL_PRIVATE_MAX };
  131 static struct linux_ioctl_handler drm_handler =
  132 { linux_ioctl_drm, LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX };
  133 static struct linux_ioctl_handler sg_handler =
  134 { linux_ioctl_sg, LINUX_IOCTL_SG_MIN, LINUX_IOCTL_SG_MAX };
  135 static struct linux_ioctl_handler video_handler =
  136 { linux_ioctl_v4l, LINUX_IOCTL_VIDEO_MIN, LINUX_IOCTL_VIDEO_MAX };
  137 static struct linux_ioctl_handler video2_handler =
  138 { linux_ioctl_v4l2, LINUX_IOCTL_VIDEO2_MIN, LINUX_IOCTL_VIDEO2_MAX };
  139 static struct linux_ioctl_handler fbsd_usb =
  140 { linux_ioctl_fbsd_usb, FBSD_LUSB_MIN, FBSD_LUSB_MAX };
  141 
  142 DATA_SET(linux_ioctl_handler_set, cdrom_handler);
  143 DATA_SET(linux_ioctl_handler_set, vfat_handler);
  144 DATA_SET(linux_ioctl_handler_set, console_handler);
  145 DATA_SET(linux_ioctl_handler_set, hdio_handler);
  146 DATA_SET(linux_ioctl_handler_set, disk_handler);
  147 DATA_SET(linux_ioctl_handler_set, socket_handler);
  148 DATA_SET(linux_ioctl_handler_set, sound_handler);
  149 DATA_SET(linux_ioctl_handler_set, termio_handler);
  150 DATA_SET(linux_ioctl_handler_set, private_handler);
  151 DATA_SET(linux_ioctl_handler_set, drm_handler);
  152 DATA_SET(linux_ioctl_handler_set, sg_handler);
  153 DATA_SET(linux_ioctl_handler_set, video_handler);
  154 DATA_SET(linux_ioctl_handler_set, video2_handler);
  155 DATA_SET(linux_ioctl_handler_set, fbsd_usb);
  156 
  157 struct handler_element
  158 {
  159         TAILQ_ENTRY(handler_element) list;
  160         int     (*func)(struct thread *, struct linux_ioctl_args *);
  161         int     low, high, span;
  162 };
  163 
  164 static TAILQ_HEAD(, handler_element) handlers =
  165     TAILQ_HEAD_INITIALIZER(handlers);
  166 static struct sx linux_ioctl_sx;
  167 SX_SYSINIT(linux_ioctl, &linux_ioctl_sx, "linux ioctl handlers");
  168 
  169 /*
  170  * hdio related ioctls for VMWare support
  171  */
  172 
  173 struct linux_hd_geometry {
  174         u_int8_t        heads;
  175         u_int8_t        sectors;
  176         u_int16_t       cylinders;
  177         u_int32_t       start;
  178 };
  179 
  180 struct linux_hd_big_geometry {
  181         u_int8_t        heads;
  182         u_int8_t        sectors;
  183         u_int32_t       cylinders;
  184         u_int32_t       start;
  185 };
  186 
  187 static int
  188 linux_ioctl_hdio(struct thread *td, struct linux_ioctl_args *args)
  189 {
  190         cap_rights_t rights;
  191         struct file *fp;
  192         int error;
  193         u_int sectorsize, fwcylinders, fwheads, fwsectors;
  194         off_t mediasize, bytespercyl;
  195 
  196         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
  197         if (error != 0)
  198                 return (error);
  199         switch (args->cmd & 0xffff) {
  200         case LINUX_HDIO_GET_GEO:
  201         case LINUX_HDIO_GET_GEO_BIG:
  202                 error = fo_ioctl(fp, DIOCGMEDIASIZE,
  203                         (caddr_t)&mediasize, td->td_ucred, td);
  204                 if (!error)
  205                         error = fo_ioctl(fp, DIOCGSECTORSIZE,
  206                                 (caddr_t)&sectorsize, td->td_ucred, td);
  207                 if (!error)
  208                         error = fo_ioctl(fp, DIOCGFWHEADS,
  209                                 (caddr_t)&fwheads, td->td_ucred, td);
  210                 if (!error)
  211                         error = fo_ioctl(fp, DIOCGFWSECTORS,
  212                                 (caddr_t)&fwsectors, td->td_ucred, td);
  213                 /*
  214                  * XXX: DIOCGFIRSTOFFSET is not yet implemented, so
  215                  * so pretend that GEOM always says 0. This is NOT VALID
  216                  * for slices or partitions, only the per-disk raw devices.
  217                  */
  218 
  219                 fdrop(fp, td);
  220                 if (error)
  221                         return (error);
  222                 /*
  223                  * 1. Calculate the number of bytes in a cylinder,
  224                  *    given the firmware's notion of heads and sectors
  225                  *    per cylinder.
  226                  * 2. Calculate the number of cylinders, given the total
  227                  *    size of the media.
  228                  * All internal calculations should have 64-bit precision.
  229                  */
  230                 bytespercyl = (off_t) sectorsize * fwheads * fwsectors;
  231                 fwcylinders = mediasize / bytespercyl;
  232 #if defined(DEBUG)
  233                 linux_msg(td, "HDIO_GET_GEO: mediasize %jd, c/h/s %d/%d/%d, "
  234                           "bpc %jd",
  235                           (intmax_t)mediasize, fwcylinders, fwheads, fwsectors, 
  236                           (intmax_t)bytespercyl);
  237 #endif
  238                 if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO) {
  239                         struct linux_hd_geometry hdg;
  240 
  241                         hdg.cylinders = fwcylinders;
  242                         hdg.heads = fwheads;
  243                         hdg.sectors = fwsectors;
  244                         hdg.start = 0;
  245                         error = copyout(&hdg, (void *)args->arg, sizeof(hdg));
  246                 } else if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO_BIG) {
  247                         struct linux_hd_big_geometry hdbg;
  248 
  249                         memset(&hdbg, 0, sizeof(hdbg));
  250                         hdbg.cylinders = fwcylinders;
  251                         hdbg.heads = fwheads;
  252                         hdbg.sectors = fwsectors;
  253                         hdbg.start = 0;
  254                         error = copyout(&hdbg, (void *)args->arg, sizeof(hdbg));
  255                 }
  256                 return (error);
  257                 break;
  258         default:
  259                 /* XXX */
  260                 linux_msg(td,
  261                         "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
  262                         args->fd, (int)(args->cmd & 0xffff),
  263                         (int)(args->cmd & 0xff00) >> 8,
  264                         (int)(args->cmd & 0xff));
  265                 break;
  266         }
  267         fdrop(fp, td);
  268         return (ENOIOCTL);
  269 }
  270 
  271 static int
  272 linux_ioctl_disk(struct thread *td, struct linux_ioctl_args *args)
  273 {
  274         cap_rights_t rights;
  275         struct file *fp;
  276         int error;
  277         u_int sectorsize;
  278         off_t mediasize;
  279 
  280         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
  281         if (error != 0)
  282                 return (error);
  283         switch (args->cmd & 0xffff) {
  284         case LINUX_BLKGETSIZE:
  285                 error = fo_ioctl(fp, DIOCGSECTORSIZE,
  286                     (caddr_t)&sectorsize, td->td_ucred, td);
  287                 if (!error)
  288                         error = fo_ioctl(fp, DIOCGMEDIASIZE,
  289                             (caddr_t)&mediasize, td->td_ucred, td);
  290                 fdrop(fp, td);
  291                 if (error)
  292                         return (error);
  293                 sectorsize = mediasize / sectorsize;
  294                 /*
  295                  * XXX: How do we know we return the right size of integer ?
  296                  */
  297                 return (copyout(&sectorsize, (void *)args->arg,
  298                     sizeof(sectorsize)));
  299                 break;
  300         case LINUX_BLKSSZGET:
  301                 error = fo_ioctl(fp, DIOCGSECTORSIZE,
  302                     (caddr_t)&sectorsize, td->td_ucred, td);
  303                 fdrop(fp, td);
  304                 if (error)
  305                         return (error);
  306                 return (copyout(&sectorsize, (void *)args->arg,
  307                     sizeof(sectorsize)));
  308                 break;
  309         }
  310         fdrop(fp, td);
  311         return (ENOIOCTL);
  312 }
  313 
  314 /*
  315  * termio related ioctls
  316  */
  317 
  318 struct linux_termio {
  319         unsigned short c_iflag;
  320         unsigned short c_oflag;
  321         unsigned short c_cflag;
  322         unsigned short c_lflag;
  323         unsigned char c_line;
  324         unsigned char c_cc[LINUX_NCC];
  325 };
  326 
  327 struct linux_termios {
  328         unsigned int c_iflag;
  329         unsigned int c_oflag;
  330         unsigned int c_cflag;
  331         unsigned int c_lflag;
  332         unsigned char c_line;
  333         unsigned char c_cc[LINUX_NCCS];
  334 };
  335 
  336 struct linux_winsize {
  337         unsigned short ws_row, ws_col;
  338         unsigned short ws_xpixel, ws_ypixel;
  339 };
  340 
  341 struct speedtab {
  342         int sp_speed;                   /* Speed. */
  343         int sp_code;                    /* Code. */
  344 };
  345 
  346 static struct speedtab sptab[] = {
  347         { B0, LINUX_B0 }, { B50, LINUX_B50 },
  348         { B75, LINUX_B75 }, { B110, LINUX_B110 },
  349         { B134, LINUX_B134 }, { B150, LINUX_B150 },
  350         { B200, LINUX_B200 }, { B300, LINUX_B300 },
  351         { B600, LINUX_B600 }, { B1200, LINUX_B1200 },
  352         { B1800, LINUX_B1800 }, { B2400, LINUX_B2400 },
  353         { B4800, LINUX_B4800 }, { B9600, LINUX_B9600 },
  354         { B19200, LINUX_B19200 }, { B38400, LINUX_B38400 },
  355         { B57600, LINUX_B57600 }, { B115200, LINUX_B115200 },
  356         {-1, -1 }
  357 };
  358 
  359 struct linux_serial_struct {
  360         int     type;
  361         int     line;
  362         int     port;
  363         int     irq;
  364         int     flags;
  365         int     xmit_fifo_size;
  366         int     custom_divisor;
  367         int     baud_base;
  368         unsigned short close_delay;
  369         char    reserved_char[2];
  370         int     hub6;
  371         unsigned short closing_wait;
  372         unsigned short closing_wait2;
  373         int     reserved[4];
  374 };
  375 
  376 static int
  377 linux_to_bsd_speed(int code, struct speedtab *table)
  378 {
  379         for ( ; table->sp_code != -1; table++)
  380                 if (table->sp_code == code)
  381                         return (table->sp_speed);
  382         return -1;
  383 }
  384 
  385 static int
  386 bsd_to_linux_speed(int speed, struct speedtab *table)
  387 {
  388         for ( ; table->sp_speed != -1; table++)
  389                 if (table->sp_speed == speed)
  390                         return (table->sp_code);
  391         return -1;
  392 }
  393 
  394 static void
  395 bsd_to_linux_termios(struct termios *bios, struct linux_termios *lios)
  396 {
  397         int i;
  398 
  399 #ifdef DEBUG
  400         if (ldebug(ioctl)) {
  401                 printf("LINUX: BSD termios structure (input):\n");
  402                 printf("i=%08x o=%08x c=%08x l=%08x ispeed=%d ospeed=%d\n",
  403                     bios->c_iflag, bios->c_oflag, bios->c_cflag, bios->c_lflag,
  404                     bios->c_ispeed, bios->c_ospeed);
  405                 printf("c_cc ");
  406                 for (i=0; i<NCCS; i++)
  407                         printf("%02x ", bios->c_cc[i]);
  408                 printf("\n");
  409         }
  410 #endif
  411 
  412         lios->c_iflag = 0;
  413         if (bios->c_iflag & IGNBRK)
  414                 lios->c_iflag |= LINUX_IGNBRK;
  415         if (bios->c_iflag & BRKINT)
  416                 lios->c_iflag |= LINUX_BRKINT;
  417         if (bios->c_iflag & IGNPAR)
  418                 lios->c_iflag |= LINUX_IGNPAR;
  419         if (bios->c_iflag & PARMRK)
  420                 lios->c_iflag |= LINUX_PARMRK;
  421         if (bios->c_iflag & INPCK)
  422                 lios->c_iflag |= LINUX_INPCK;
  423         if (bios->c_iflag & ISTRIP)
  424                 lios->c_iflag |= LINUX_ISTRIP;
  425         if (bios->c_iflag & INLCR)
  426                 lios->c_iflag |= LINUX_INLCR;
  427         if (bios->c_iflag & IGNCR)
  428                 lios->c_iflag |= LINUX_IGNCR;
  429         if (bios->c_iflag & ICRNL)
  430                 lios->c_iflag |= LINUX_ICRNL;
  431         if (bios->c_iflag & IXON)
  432                 lios->c_iflag |= LINUX_IXON;
  433         if (bios->c_iflag & IXANY)
  434                 lios->c_iflag |= LINUX_IXANY;
  435         if (bios->c_iflag & IXOFF)
  436                 lios->c_iflag |= LINUX_IXOFF;
  437         if (bios->c_iflag & IMAXBEL)
  438                 lios->c_iflag |= LINUX_IMAXBEL;
  439 
  440         lios->c_oflag = 0;
  441         if (bios->c_oflag & OPOST)
  442                 lios->c_oflag |= LINUX_OPOST;
  443         if (bios->c_oflag & ONLCR)
  444                 lios->c_oflag |= LINUX_ONLCR;
  445         if (bios->c_oflag & TAB3)
  446                 lios->c_oflag |= LINUX_XTABS;
  447 
  448         lios->c_cflag = bsd_to_linux_speed(bios->c_ispeed, sptab);
  449         lios->c_cflag |= (bios->c_cflag & CSIZE) >> 4;
  450         if (bios->c_cflag & CSTOPB)
  451                 lios->c_cflag |= LINUX_CSTOPB;
  452         if (bios->c_cflag & CREAD)
  453                 lios->c_cflag |= LINUX_CREAD;
  454         if (bios->c_cflag & PARENB)
  455                 lios->c_cflag |= LINUX_PARENB;
  456         if (bios->c_cflag & PARODD)
  457                 lios->c_cflag |= LINUX_PARODD;
  458         if (bios->c_cflag & HUPCL)
  459                 lios->c_cflag |= LINUX_HUPCL;
  460         if (bios->c_cflag & CLOCAL)
  461                 lios->c_cflag |= LINUX_CLOCAL;
  462         if (bios->c_cflag & CRTSCTS)
  463                 lios->c_cflag |= LINUX_CRTSCTS;
  464 
  465         lios->c_lflag = 0;
  466         if (bios->c_lflag & ISIG)
  467                 lios->c_lflag |= LINUX_ISIG;
  468         if (bios->c_lflag & ICANON)
  469                 lios->c_lflag |= LINUX_ICANON;
  470         if (bios->c_lflag & ECHO)
  471                 lios->c_lflag |= LINUX_ECHO;
  472         if (bios->c_lflag & ECHOE)
  473                 lios->c_lflag |= LINUX_ECHOE;
  474         if (bios->c_lflag & ECHOK)
  475                 lios->c_lflag |= LINUX_ECHOK;
  476         if (bios->c_lflag & ECHONL)
  477                 lios->c_lflag |= LINUX_ECHONL;
  478         if (bios->c_lflag & NOFLSH)
  479                 lios->c_lflag |= LINUX_NOFLSH;
  480         if (bios->c_lflag & TOSTOP)
  481                 lios->c_lflag |= LINUX_TOSTOP;
  482         if (bios->c_lflag & ECHOCTL)
  483                 lios->c_lflag |= LINUX_ECHOCTL;
  484         if (bios->c_lflag & ECHOPRT)
  485                 lios->c_lflag |= LINUX_ECHOPRT;
  486         if (bios->c_lflag & ECHOKE)
  487                 lios->c_lflag |= LINUX_ECHOKE;
  488         if (bios->c_lflag & FLUSHO)
  489                 lios->c_lflag |= LINUX_FLUSHO;
  490         if (bios->c_lflag & PENDIN)
  491                 lios->c_lflag |= LINUX_PENDIN;
  492         if (bios->c_lflag & IEXTEN)
  493                 lios->c_lflag |= LINUX_IEXTEN;
  494 
  495         for (i=0; i<LINUX_NCCS; i++)
  496                 lios->c_cc[i] = LINUX_POSIX_VDISABLE;
  497         lios->c_cc[LINUX_VINTR] = bios->c_cc[VINTR];
  498         lios->c_cc[LINUX_VQUIT] = bios->c_cc[VQUIT];
  499         lios->c_cc[LINUX_VERASE] = bios->c_cc[VERASE];
  500         lios->c_cc[LINUX_VKILL] = bios->c_cc[VKILL];
  501         lios->c_cc[LINUX_VEOF] = bios->c_cc[VEOF];
  502         lios->c_cc[LINUX_VEOL] = bios->c_cc[VEOL];
  503         lios->c_cc[LINUX_VMIN] = bios->c_cc[VMIN];
  504         lios->c_cc[LINUX_VTIME] = bios->c_cc[VTIME];
  505         lios->c_cc[LINUX_VEOL2] = bios->c_cc[VEOL2];
  506         lios->c_cc[LINUX_VSUSP] = bios->c_cc[VSUSP];
  507         lios->c_cc[LINUX_VSTART] = bios->c_cc[VSTART];
  508         lios->c_cc[LINUX_VSTOP] = bios->c_cc[VSTOP];
  509         lios->c_cc[LINUX_VREPRINT] = bios->c_cc[VREPRINT];
  510         lios->c_cc[LINUX_VDISCARD] = bios->c_cc[VDISCARD];
  511         lios->c_cc[LINUX_VWERASE] = bios->c_cc[VWERASE];
  512         lios->c_cc[LINUX_VLNEXT] = bios->c_cc[VLNEXT];
  513 
  514         for (i=0; i<LINUX_NCCS; i++) {
  515                 if (i != LINUX_VMIN && i != LINUX_VTIME &&
  516                     lios->c_cc[i] == _POSIX_VDISABLE)
  517                         lios->c_cc[i] = LINUX_POSIX_VDISABLE;
  518         }
  519         lios->c_line = 0;
  520 
  521 #ifdef DEBUG
  522         if (ldebug(ioctl)) {
  523                 printf("LINUX: LINUX termios structure (output):\n");
  524                 printf("i=%08x o=%08x c=%08x l=%08x line=%d\n",
  525                     lios->c_iflag, lios->c_oflag, lios->c_cflag,
  526                     lios->c_lflag, (int)lios->c_line);
  527                 printf("c_cc ");
  528                 for (i=0; i<LINUX_NCCS; i++)
  529                         printf("%02x ", lios->c_cc[i]);
  530                 printf("\n");
  531         }
  532 #endif
  533 }
  534 
  535 static void
  536 linux_to_bsd_termios(struct linux_termios *lios, struct termios *bios)
  537 {
  538         int i;
  539 
  540 #ifdef DEBUG
  541         if (ldebug(ioctl)) {
  542                 printf("LINUX: LINUX termios structure (input):\n");
  543                 printf("i=%08x o=%08x c=%08x l=%08x line=%d\n",
  544                     lios->c_iflag, lios->c_oflag, lios->c_cflag,
  545                     lios->c_lflag, (int)lios->c_line);
  546                 printf("c_cc ");
  547                 for (i=0; i<LINUX_NCCS; i++)
  548                         printf("%02x ", lios->c_cc[i]);
  549                 printf("\n");
  550         }
  551 #endif
  552 
  553         bios->c_iflag = 0;
  554         if (lios->c_iflag & LINUX_IGNBRK)
  555                 bios->c_iflag |= IGNBRK;
  556         if (lios->c_iflag & LINUX_BRKINT)
  557                 bios->c_iflag |= BRKINT;
  558         if (lios->c_iflag & LINUX_IGNPAR)
  559                 bios->c_iflag |= IGNPAR;
  560         if (lios->c_iflag & LINUX_PARMRK)
  561                 bios->c_iflag |= PARMRK;
  562         if (lios->c_iflag & LINUX_INPCK)
  563                 bios->c_iflag |= INPCK;
  564         if (lios->c_iflag & LINUX_ISTRIP)
  565                 bios->c_iflag |= ISTRIP;
  566         if (lios->c_iflag & LINUX_INLCR)
  567                 bios->c_iflag |= INLCR;
  568         if (lios->c_iflag & LINUX_IGNCR)
  569                 bios->c_iflag |= IGNCR;
  570         if (lios->c_iflag & LINUX_ICRNL)
  571                 bios->c_iflag |= ICRNL;
  572         if (lios->c_iflag & LINUX_IXON)
  573                 bios->c_iflag |= IXON;
  574         if (lios->c_iflag & LINUX_IXANY)
  575                 bios->c_iflag |= IXANY;
  576         if (lios->c_iflag & LINUX_IXOFF)
  577                 bios->c_iflag |= IXOFF;
  578         if (lios->c_iflag & LINUX_IMAXBEL)
  579                 bios->c_iflag |= IMAXBEL;
  580 
  581         bios->c_oflag = 0;
  582         if (lios->c_oflag & LINUX_OPOST)
  583                 bios->c_oflag |= OPOST;
  584         if (lios->c_oflag & LINUX_ONLCR)
  585                 bios->c_oflag |= ONLCR;
  586         if (lios->c_oflag & LINUX_XTABS)
  587                 bios->c_oflag |= TAB3;
  588 
  589         bios->c_cflag = (lios->c_cflag & LINUX_CSIZE) << 4;
  590         if (lios->c_cflag & LINUX_CSTOPB)
  591                 bios->c_cflag |= CSTOPB;
  592         if (lios->c_cflag & LINUX_CREAD)
  593                 bios->c_cflag |= CREAD;
  594         if (lios->c_cflag & LINUX_PARENB)
  595                 bios->c_cflag |= PARENB;
  596         if (lios->c_cflag & LINUX_PARODD)
  597                 bios->c_cflag |= PARODD;
  598         if (lios->c_cflag & LINUX_HUPCL)
  599                 bios->c_cflag |= HUPCL;
  600         if (lios->c_cflag & LINUX_CLOCAL)
  601                 bios->c_cflag |= CLOCAL;
  602         if (lios->c_cflag & LINUX_CRTSCTS)
  603                 bios->c_cflag |= CRTSCTS;
  604 
  605         bios->c_lflag = 0;
  606         if (lios->c_lflag & LINUX_ISIG)
  607                 bios->c_lflag |= ISIG;
  608         if (lios->c_lflag & LINUX_ICANON)
  609                 bios->c_lflag |= ICANON;
  610         if (lios->c_lflag & LINUX_ECHO)
  611                 bios->c_lflag |= ECHO;
  612         if (lios->c_lflag & LINUX_ECHOE)
  613                 bios->c_lflag |= ECHOE;
  614         if (lios->c_lflag & LINUX_ECHOK)
  615                 bios->c_lflag |= ECHOK;
  616         if (lios->c_lflag & LINUX_ECHONL)
  617                 bios->c_lflag |= ECHONL;
  618         if (lios->c_lflag & LINUX_NOFLSH)
  619                 bios->c_lflag |= NOFLSH;
  620         if (lios->c_lflag & LINUX_TOSTOP)
  621                 bios->c_lflag |= TOSTOP;
  622         if (lios->c_lflag & LINUX_ECHOCTL)
  623                 bios->c_lflag |= ECHOCTL;
  624         if (lios->c_lflag & LINUX_ECHOPRT)
  625                 bios->c_lflag |= ECHOPRT;
  626         if (lios->c_lflag & LINUX_ECHOKE)
  627                 bios->c_lflag |= ECHOKE;
  628         if (lios->c_lflag & LINUX_FLUSHO)
  629                 bios->c_lflag |= FLUSHO;
  630         if (lios->c_lflag & LINUX_PENDIN)
  631                 bios->c_lflag |= PENDIN;
  632         if (lios->c_lflag & LINUX_IEXTEN)
  633                 bios->c_lflag |= IEXTEN;
  634 
  635         for (i=0; i<NCCS; i++)
  636                 bios->c_cc[i] = _POSIX_VDISABLE;
  637         bios->c_cc[VINTR] = lios->c_cc[LINUX_VINTR];
  638         bios->c_cc[VQUIT] = lios->c_cc[LINUX_VQUIT];
  639         bios->c_cc[VERASE] = lios->c_cc[LINUX_VERASE];
  640         bios->c_cc[VKILL] = lios->c_cc[LINUX_VKILL];
  641         bios->c_cc[VEOF] = lios->c_cc[LINUX_VEOF];
  642         bios->c_cc[VEOL] = lios->c_cc[LINUX_VEOL];
  643         bios->c_cc[VMIN] = lios->c_cc[LINUX_VMIN];
  644         bios->c_cc[VTIME] = lios->c_cc[LINUX_VTIME];
  645         bios->c_cc[VEOL2] = lios->c_cc[LINUX_VEOL2];
  646         bios->c_cc[VSUSP] = lios->c_cc[LINUX_VSUSP];
  647         bios->c_cc[VSTART] = lios->c_cc[LINUX_VSTART];
  648         bios->c_cc[VSTOP] = lios->c_cc[LINUX_VSTOP];
  649         bios->c_cc[VREPRINT] = lios->c_cc[LINUX_VREPRINT];
  650         bios->c_cc[VDISCARD] = lios->c_cc[LINUX_VDISCARD];
  651         bios->c_cc[VWERASE] = lios->c_cc[LINUX_VWERASE];
  652         bios->c_cc[VLNEXT] = lios->c_cc[LINUX_VLNEXT];
  653 
  654         for (i=0; i<NCCS; i++) {
  655                 if (i != VMIN && i != VTIME &&
  656                     bios->c_cc[i] == LINUX_POSIX_VDISABLE)
  657                         bios->c_cc[i] = _POSIX_VDISABLE;
  658         }
  659 
  660         bios->c_ispeed = bios->c_ospeed =
  661             linux_to_bsd_speed(lios->c_cflag & LINUX_CBAUD, sptab);
  662 
  663 #ifdef DEBUG
  664         if (ldebug(ioctl)) {
  665                 printf("LINUX: BSD termios structure (output):\n");
  666                 printf("i=%08x o=%08x c=%08x l=%08x ispeed=%d ospeed=%d\n",
  667                     bios->c_iflag, bios->c_oflag, bios->c_cflag, bios->c_lflag,
  668                     bios->c_ispeed, bios->c_ospeed);
  669                 printf("c_cc ");
  670                 for (i=0; i<NCCS; i++)
  671                         printf("%02x ", bios->c_cc[i]);
  672                 printf("\n");
  673         }
  674 #endif
  675 }
  676 
  677 static void
  678 bsd_to_linux_termio(struct termios *bios, struct linux_termio *lio)
  679 {
  680         struct linux_termios lios;
  681 
  682         bsd_to_linux_termios(bios, &lios);
  683         lio->c_iflag = lios.c_iflag;
  684         lio->c_oflag = lios.c_oflag;
  685         lio->c_cflag = lios.c_cflag;
  686         lio->c_lflag = lios.c_lflag;
  687         lio->c_line  = lios.c_line;
  688         memcpy(lio->c_cc, lios.c_cc, LINUX_NCC);
  689 }
  690 
  691 static void
  692 linux_to_bsd_termio(struct linux_termio *lio, struct termios *bios)
  693 {
  694         struct linux_termios lios;
  695         int i;
  696 
  697         lios.c_iflag = lio->c_iflag;
  698         lios.c_oflag = lio->c_oflag;
  699         lios.c_cflag = lio->c_cflag;
  700         lios.c_lflag = lio->c_lflag;
  701         for (i=LINUX_NCC; i<LINUX_NCCS; i++)
  702                 lios.c_cc[i] = LINUX_POSIX_VDISABLE;
  703         memcpy(lios.c_cc, lio->c_cc, LINUX_NCC);
  704         linux_to_bsd_termios(&lios, bios);
  705 }
  706 
  707 static int
  708 linux_ioctl_termio(struct thread *td, struct linux_ioctl_args *args)
  709 {
  710         struct termios bios;
  711         struct linux_termios lios;
  712         struct linux_termio lio;
  713         cap_rights_t rights;
  714         struct file *fp;
  715         int error;
  716 
  717         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
  718         if (error != 0)
  719                 return (error);
  720 
  721         switch (args->cmd & 0xffff) {
  722 
  723         case LINUX_TCGETS:
  724                 error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
  725                     td);
  726                 if (error)
  727                         break;
  728                 bsd_to_linux_termios(&bios, &lios);
  729                 error = copyout(&lios, (void *)args->arg, sizeof(lios));
  730                 break;
  731 
  732         case LINUX_TCSETS:
  733                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  734                 if (error)
  735                         break;
  736                 linux_to_bsd_termios(&lios, &bios);
  737                 error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
  738                     td));
  739                 break;
  740 
  741         case LINUX_TCSETSW:
  742                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  743                 if (error)
  744                         break;
  745                 linux_to_bsd_termios(&lios, &bios);
  746                 error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
  747                     td));
  748                 break;
  749 
  750         case LINUX_TCSETSF:
  751                 error = copyin((void *)args->arg, &lios, sizeof(lios));
  752                 if (error)
  753                         break;
  754                 linux_to_bsd_termios(&lios, &bios);
  755                 error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
  756                     td));
  757                 break;
  758 
  759         case LINUX_TCGETA:
  760                 error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
  761                     td);
  762                 if (error)
  763                         break;
  764                 bsd_to_linux_termio(&bios, &lio);
  765                 error = (copyout(&lio, (void *)args->arg, sizeof(lio)));
  766                 break;
  767 
  768         case LINUX_TCSETA:
  769                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  770                 if (error)
  771                         break;
  772                 linux_to_bsd_termio(&lio, &bios);
  773                 error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
  774                     td));
  775                 break;
  776 
  777         case LINUX_TCSETAW:
  778                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  779                 if (error)
  780                         break;
  781                 linux_to_bsd_termio(&lio, &bios);
  782                 error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
  783                     td));
  784                 break;
  785 
  786         case LINUX_TCSETAF:
  787                 error = copyin((void *)args->arg, &lio, sizeof(lio));
  788                 if (error)
  789                         break;
  790                 linux_to_bsd_termio(&lio, &bios);
  791                 error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
  792                     td));
  793                 break;
  794 
  795         /* LINUX_TCSBRK */
  796 
  797         case LINUX_TCXONC: {
  798                 switch (args->arg) {
  799                 case LINUX_TCOOFF:
  800                         args->cmd = TIOCSTOP;
  801                         break;
  802                 case LINUX_TCOON:
  803                         args->cmd = TIOCSTART;
  804                         break;
  805                 case LINUX_TCIOFF:
  806                 case LINUX_TCION: {
  807                         int c;
  808                         struct write_args wr;
  809                         error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios,
  810                             td->td_ucred, td);
  811                         if (error)
  812                                 break;
  813                         fdrop(fp, td);
  814                         c = (args->arg == LINUX_TCIOFF) ? VSTOP : VSTART;
  815                         c = bios.c_cc[c];
  816                         if (c != _POSIX_VDISABLE) {
  817                                 wr.fd = args->fd;
  818                                 wr.buf = &c;
  819                                 wr.nbyte = sizeof(c);
  820                                 return (sys_write(td, &wr));
  821                         } else
  822                                 return (0);
  823                 }
  824                 default:
  825                         fdrop(fp, td);
  826                         return (EINVAL);
  827                 }
  828                 args->arg = 0;
  829                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  830                 break;
  831         }
  832 
  833         case LINUX_TCFLSH: {
  834                 int val;
  835                 switch (args->arg) {
  836                 case LINUX_TCIFLUSH:
  837                         val = FREAD;
  838                         break;
  839                 case LINUX_TCOFLUSH:
  840                         val = FWRITE;
  841                         break;
  842                 case LINUX_TCIOFLUSH:
  843                         val = FREAD | FWRITE;
  844                         break;
  845                 default:
  846                         fdrop(fp, td);
  847                         return (EINVAL);
  848                 }
  849                 error = (fo_ioctl(fp,TIOCFLUSH,(caddr_t)&val,td->td_ucred,td));
  850                 break;
  851         }
  852 
  853         case LINUX_TIOCEXCL:
  854                 args->cmd = TIOCEXCL;
  855                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  856                 break;
  857 
  858         case LINUX_TIOCNXCL:
  859                 args->cmd = TIOCNXCL;
  860                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  861                 break;
  862 
  863         case LINUX_TIOCSCTTY:
  864                 args->cmd = TIOCSCTTY;
  865                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  866                 break;
  867 
  868         case LINUX_TIOCGPGRP:
  869                 args->cmd = TIOCGPGRP;
  870                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  871                 break;
  872 
  873         case LINUX_TIOCSPGRP:
  874                 args->cmd = TIOCSPGRP;
  875                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  876                 break;
  877 
  878         /* LINUX_TIOCOUTQ */
  879         /* LINUX_TIOCSTI */
  880 
  881         case LINUX_TIOCGWINSZ:
  882                 args->cmd = TIOCGWINSZ;
  883                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  884                 break;
  885 
  886         case LINUX_TIOCSWINSZ:
  887                 args->cmd = TIOCSWINSZ;
  888                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  889                 break;
  890 
  891         case LINUX_TIOCMGET:
  892                 args->cmd = TIOCMGET;
  893                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  894                 break;
  895 
  896         case LINUX_TIOCMBIS:
  897                 args->cmd = TIOCMBIS;
  898                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  899                 break;
  900 
  901         case LINUX_TIOCMBIC:
  902                 args->cmd = TIOCMBIC;
  903                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  904                 break;
  905 
  906         case LINUX_TIOCMSET:
  907                 args->cmd = TIOCMSET;
  908                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  909                 break;
  910 
  911         /* TIOCGSOFTCAR */
  912         /* TIOCSSOFTCAR */
  913 
  914         case LINUX_FIONREAD: /* LINUX_TIOCINQ */
  915                 args->cmd = FIONREAD;
  916                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  917                 break;
  918 
  919         /* LINUX_TIOCLINUX */
  920 
  921         case LINUX_TIOCCONS:
  922                 args->cmd = TIOCCONS;
  923                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  924                 break;
  925 
  926         case LINUX_TIOCGSERIAL: {
  927                 struct linux_serial_struct lss;
  928 
  929                 bzero(&lss, sizeof(lss));
  930                 lss.type = LINUX_PORT_16550A;
  931                 lss.flags = 0;
  932                 lss.close_delay = 0;
  933                 error = copyout(&lss, (void *)args->arg, sizeof(lss));
  934                 break;
  935         }
  936 
  937         case LINUX_TIOCSSERIAL: {
  938                 struct linux_serial_struct lss;
  939                 error = copyin((void *)args->arg, &lss, sizeof(lss));
  940                 if (error)
  941                         break;
  942                 /* XXX - It really helps to have an implementation that
  943                  * does nothing. NOT!
  944                  */
  945                 error = 0;
  946                 break;
  947         }
  948 
  949         case LINUX_TIOCPKT:
  950                 args->cmd = TIOCPKT;
  951                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  952                 break;
  953 
  954         case LINUX_FIONBIO:
  955                 args->cmd = FIONBIO;
  956                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  957                 break;
  958 
  959         case LINUX_TIOCNOTTY:
  960                 args->cmd = TIOCNOTTY;
  961                 error = (sys_ioctl(td, (struct ioctl_args *)args));
  962                 break;
  963 
  964         case LINUX_TIOCSETD: {
  965                 int line;
  966                 switch (args->arg) {
  967                 case LINUX_N_TTY:
  968                         line = TTYDISC;
  969                         break;
  970                 case LINUX_N_SLIP:
  971                         line = SLIPDISC;
  972                         break;
  973                 case LINUX_N_PPP:
  974                         line = PPPDISC;
  975                         break;
  976                 default:
  977                         fdrop(fp, td);
  978                         return (EINVAL);
  979                 }
  980                 error = (fo_ioctl(fp, TIOCSETD, (caddr_t)&line, td->td_ucred,
  981                     td));
  982                 break;
  983         }
  984 
  985         case LINUX_TIOCGETD: {
  986                 int linux_line;
  987                 int bsd_line = TTYDISC;
  988                 error = fo_ioctl(fp, TIOCGETD, (caddr_t)&bsd_line,
  989                     td->td_ucred, td);
  990                 if (error)
  991                         break;
  992                 switch (bsd_line) {
  993                 case TTYDISC:
  994                         linux_line = LINUX_N_TTY;
  995                         break;
  996                 case SLIPDISC:
  997                         linux_line = LINUX_N_SLIP;
  998                         break;
  999                 case PPPDISC:
 1000                         linux_line = LINUX_N_PPP;
 1001                         break;
 1002                 default:
 1003                         fdrop(fp, td);
 1004                         return (EINVAL);
 1005                 }
 1006                 error = (copyout(&linux_line, (void *)args->arg, sizeof(int)));
 1007                 break;
 1008         }
 1009 
 1010         /* LINUX_TCSBRKP */
 1011         /* LINUX_TIOCTTYGSTRUCT */
 1012 
 1013         case LINUX_FIONCLEX:
 1014                 args->cmd = FIONCLEX;
 1015                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1016                 break;
 1017 
 1018         case LINUX_FIOCLEX:
 1019                 args->cmd = FIOCLEX;
 1020                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1021                 break;
 1022 
 1023         case LINUX_FIOASYNC:
 1024                 args->cmd = FIOASYNC;
 1025                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1026                 break;
 1027 
 1028         /* LINUX_TIOCSERCONFIG */
 1029         /* LINUX_TIOCSERGWILD */
 1030         /* LINUX_TIOCSERSWILD */
 1031         /* LINUX_TIOCGLCKTRMIOS */
 1032         /* LINUX_TIOCSLCKTRMIOS */
 1033 
 1034         case LINUX_TIOCSBRK:
 1035                 args->cmd = TIOCSBRK;
 1036                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1037                 break;
 1038 
 1039         case LINUX_TIOCCBRK:
 1040                 args->cmd = TIOCCBRK;
 1041                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1042                 break;
 1043         case LINUX_TIOCGPTN: {
 1044                 int nb;
 1045                 
 1046                 error = fo_ioctl(fp, TIOCGPTN, (caddr_t)&nb, td->td_ucred, td);
 1047                 if (!error)
 1048                         error = copyout(&nb, (void *)args->arg,
 1049                             sizeof(int));
 1050                 break;
 1051         }
 1052         case LINUX_TIOCSPTLCK:
 1053                 /* Our unlockpt() does nothing. */
 1054                 error = 0;
 1055                 break;
 1056         default:
 1057                 error = ENOIOCTL;
 1058                 break;
 1059         }
 1060 
 1061         fdrop(fp, td);
 1062         return (error);
 1063 }
 1064 
 1065 /*
 1066  * CDROM related ioctls
 1067  */
 1068 
 1069 struct linux_cdrom_msf
 1070 {
 1071         u_char  cdmsf_min0;
 1072         u_char  cdmsf_sec0;
 1073         u_char  cdmsf_frame0;
 1074         u_char  cdmsf_min1;
 1075         u_char  cdmsf_sec1;
 1076         u_char  cdmsf_frame1;
 1077 };
 1078 
 1079 struct linux_cdrom_tochdr
 1080 {
 1081         u_char  cdth_trk0;
 1082         u_char  cdth_trk1;
 1083 };
 1084 
 1085 union linux_cdrom_addr
 1086 {
 1087         struct {
 1088                 u_char  minute;
 1089                 u_char  second;
 1090                 u_char  frame;
 1091         } msf;
 1092         int     lba;
 1093 };
 1094 
 1095 struct linux_cdrom_tocentry
 1096 {
 1097         u_char  cdte_track;
 1098         u_char  cdte_adr:4;
 1099         u_char  cdte_ctrl:4;
 1100         u_char  cdte_format;
 1101         union linux_cdrom_addr cdte_addr;
 1102         u_char  cdte_datamode;
 1103 };
 1104 
 1105 struct linux_cdrom_subchnl
 1106 {
 1107         u_char  cdsc_format;
 1108         u_char  cdsc_audiostatus;
 1109         u_char  cdsc_adr:4;
 1110         u_char  cdsc_ctrl:4;
 1111         u_char  cdsc_trk;
 1112         u_char  cdsc_ind;
 1113         union linux_cdrom_addr cdsc_absaddr;
 1114         union linux_cdrom_addr cdsc_reladdr;
 1115 };
 1116 
 1117 struct l_cdrom_read_audio {
 1118         union linux_cdrom_addr addr;
 1119         u_char          addr_format;
 1120         l_int           nframes;
 1121         u_char          *buf;
 1122 };
 1123 
 1124 struct l_dvd_layer {
 1125         u_char          book_version:4;
 1126         u_char          book_type:4;
 1127         u_char          min_rate:4;
 1128         u_char          disc_size:4;
 1129         u_char          layer_type:4;
 1130         u_char          track_path:1;
 1131         u_char          nlayers:2;
 1132         u_char          track_density:4;
 1133         u_char          linear_density:4;
 1134         u_char          bca:1;
 1135         u_int32_t       start_sector;
 1136         u_int32_t       end_sector;
 1137         u_int32_t       end_sector_l0;
 1138 };
 1139 
 1140 struct l_dvd_physical {
 1141         u_char          type;
 1142         u_char          layer_num;
 1143         struct l_dvd_layer layer[4];
 1144 };
 1145 
 1146 struct l_dvd_copyright {
 1147         u_char          type;
 1148         u_char          layer_num;
 1149         u_char          cpst;
 1150         u_char          rmi;
 1151 };
 1152 
 1153 struct l_dvd_disckey {
 1154         u_char          type;
 1155         l_uint          agid:2;
 1156         u_char          value[2048];
 1157 };
 1158 
 1159 struct l_dvd_bca {
 1160         u_char          type;
 1161         l_int           len;
 1162         u_char          value[188];
 1163 };
 1164 
 1165 struct l_dvd_manufact {
 1166         u_char          type;
 1167         u_char          layer_num;
 1168         l_int           len;
 1169         u_char          value[2048];
 1170 };
 1171 
 1172 typedef union {
 1173         u_char                  type;
 1174         struct l_dvd_physical   physical;
 1175         struct l_dvd_copyright  copyright;
 1176         struct l_dvd_disckey    disckey;
 1177         struct l_dvd_bca        bca;
 1178         struct l_dvd_manufact   manufact;
 1179 } l_dvd_struct;
 1180 
 1181 typedef u_char l_dvd_key[5];
 1182 typedef u_char l_dvd_challenge[10];
 1183 
 1184 struct l_dvd_lu_send_agid {
 1185         u_char          type;
 1186         l_uint          agid:2;
 1187 };
 1188 
 1189 struct l_dvd_host_send_challenge {
 1190         u_char          type;
 1191         l_uint          agid:2;
 1192         l_dvd_challenge chal;
 1193 };
 1194 
 1195 struct l_dvd_send_key {
 1196         u_char          type;
 1197         l_uint          agid:2;
 1198         l_dvd_key       key;
 1199 };
 1200 
 1201 struct l_dvd_lu_send_challenge {
 1202         u_char          type;
 1203         l_uint          agid:2;
 1204         l_dvd_challenge chal;
 1205 };
 1206 
 1207 struct l_dvd_lu_send_title_key {
 1208         u_char          type;
 1209         l_uint          agid:2;
 1210         l_dvd_key       title_key;
 1211         l_int           lba;
 1212         l_uint          cpm:1;
 1213         l_uint          cp_sec:1;
 1214         l_uint          cgms:2;
 1215 };
 1216 
 1217 struct l_dvd_lu_send_asf {
 1218         u_char          type;
 1219         l_uint          agid:2;
 1220         l_uint          asf:1;
 1221 };
 1222 
 1223 struct l_dvd_host_send_rpcstate {
 1224         u_char          type;
 1225         u_char          pdrc;
 1226 };
 1227 
 1228 struct l_dvd_lu_send_rpcstate {
 1229         u_char          type:2;
 1230         u_char          vra:3;
 1231         u_char          ucca:3;
 1232         u_char          region_mask;
 1233         u_char          rpc_scheme;
 1234 };
 1235 
 1236 typedef union {
 1237         u_char                          type;
 1238         struct l_dvd_lu_send_agid       lsa;
 1239         struct l_dvd_host_send_challenge hsc;
 1240         struct l_dvd_send_key           lsk;
 1241         struct l_dvd_lu_send_challenge  lsc;
 1242         struct l_dvd_send_key           hsk;
 1243         struct l_dvd_lu_send_title_key  lstk;
 1244         struct l_dvd_lu_send_asf        lsasf;
 1245         struct l_dvd_host_send_rpcstate hrpcs;
 1246         struct l_dvd_lu_send_rpcstate   lrpcs;
 1247 } l_dvd_authinfo;
 1248 
 1249 static void
 1250 bsd_to_linux_msf_lba(u_char af, union msf_lba *bp, union linux_cdrom_addr *lp)
 1251 {
 1252         if (af == CD_LBA_FORMAT)
 1253                 lp->lba = bp->lba;
 1254         else {
 1255                 lp->msf.minute = bp->msf.minute;
 1256                 lp->msf.second = bp->msf.second;
 1257                 lp->msf.frame = bp->msf.frame;
 1258         }
 1259 }
 1260 
 1261 static void
 1262 set_linux_cdrom_addr(union linux_cdrom_addr *addr, int format, int lba)
 1263 {
 1264         if (format == LINUX_CDROM_MSF) {
 1265                 addr->msf.frame = lba % 75;
 1266                 lba /= 75;
 1267                 lba += 2;
 1268                 addr->msf.second = lba % 60;
 1269                 addr->msf.minute = lba / 60;
 1270         } else
 1271                 addr->lba = lba;
 1272 }
 1273 
 1274 static int
 1275 linux_to_bsd_dvd_struct(l_dvd_struct *lp, struct dvd_struct *bp)
 1276 {
 1277         bp->format = lp->type;
 1278         switch (bp->format) {
 1279         case DVD_STRUCT_PHYSICAL:
 1280                 if (bp->layer_num >= 4)
 1281                         return (EINVAL);
 1282                 bp->layer_num = lp->physical.layer_num;
 1283                 break;
 1284         case DVD_STRUCT_COPYRIGHT:
 1285                 bp->layer_num = lp->copyright.layer_num;
 1286                 break;
 1287         case DVD_STRUCT_DISCKEY:
 1288                 bp->agid = lp->disckey.agid;
 1289                 break;
 1290         case DVD_STRUCT_BCA:
 1291         case DVD_STRUCT_MANUFACT:
 1292                 break;
 1293         default:
 1294                 return (EINVAL);
 1295         }
 1296         return (0);
 1297 }
 1298 
 1299 static int
 1300 bsd_to_linux_dvd_struct(struct dvd_struct *bp, l_dvd_struct *lp)
 1301 {
 1302         switch (bp->format) {
 1303         case DVD_STRUCT_PHYSICAL: {
 1304                 struct dvd_layer *blp = (struct dvd_layer *)bp->data;
 1305                 struct l_dvd_layer *llp = &lp->physical.layer[bp->layer_num];
 1306                 memset(llp, 0, sizeof(*llp));
 1307                 llp->book_version = blp->book_version;
 1308                 llp->book_type = blp->book_type;
 1309                 llp->min_rate = blp->max_rate;
 1310                 llp->disc_size = blp->disc_size;
 1311                 llp->layer_type = blp->layer_type;
 1312                 llp->track_path = blp->track_path;
 1313                 llp->nlayers = blp->nlayers;
 1314                 llp->track_density = blp->track_density;
 1315                 llp->linear_density = blp->linear_density;
 1316                 llp->bca = blp->bca;
 1317                 llp->start_sector = blp->start_sector;
 1318                 llp->end_sector = blp->end_sector;
 1319                 llp->end_sector_l0 = blp->end_sector_l0;
 1320                 break;
 1321         }
 1322         case DVD_STRUCT_COPYRIGHT:
 1323                 lp->copyright.cpst = bp->cpst;
 1324                 lp->copyright.rmi = bp->rmi;
 1325                 break;
 1326         case DVD_STRUCT_DISCKEY:
 1327                 memcpy(lp->disckey.value, bp->data, sizeof(lp->disckey.value));
 1328                 break;
 1329         case DVD_STRUCT_BCA:
 1330                 lp->bca.len = bp->length;
 1331                 memcpy(lp->bca.value, bp->data, sizeof(lp->bca.value));
 1332                 break;
 1333         case DVD_STRUCT_MANUFACT:
 1334                 lp->manufact.len = bp->length;
 1335                 memcpy(lp->manufact.value, bp->data,
 1336                     sizeof(lp->manufact.value));
 1337                 /* lp->manufact.layer_num is unused in linux (redhat 7.0) */
 1338                 break;
 1339         default:
 1340                 return (EINVAL);
 1341         }
 1342         return (0);
 1343 }
 1344 
 1345 static int
 1346 linux_to_bsd_dvd_authinfo(l_dvd_authinfo *lp, int *bcode,
 1347     struct dvd_authinfo *bp)
 1348 {
 1349         switch (lp->type) {
 1350         case LINUX_DVD_LU_SEND_AGID:
 1351                 *bcode = DVDIOCREPORTKEY;
 1352                 bp->format = DVD_REPORT_AGID;
 1353                 bp->agid = lp->lsa.agid;
 1354                 break;
 1355         case LINUX_DVD_HOST_SEND_CHALLENGE:
 1356                 *bcode = DVDIOCSENDKEY;
 1357                 bp->format = DVD_SEND_CHALLENGE;
 1358                 bp->agid = lp->hsc.agid;
 1359                 memcpy(bp->keychal, lp->hsc.chal, 10);
 1360                 break;
 1361         case LINUX_DVD_LU_SEND_KEY1:
 1362                 *bcode = DVDIOCREPORTKEY;
 1363                 bp->format = DVD_REPORT_KEY1;
 1364                 bp->agid = lp->lsk.agid;
 1365                 break;
 1366         case LINUX_DVD_LU_SEND_CHALLENGE:
 1367                 *bcode = DVDIOCREPORTKEY;
 1368                 bp->format = DVD_REPORT_CHALLENGE;
 1369                 bp->agid = lp->lsc.agid;
 1370                 break;
 1371         case LINUX_DVD_HOST_SEND_KEY2:
 1372                 *bcode = DVDIOCSENDKEY;
 1373                 bp->format = DVD_SEND_KEY2;
 1374                 bp->agid = lp->hsk.agid;
 1375                 memcpy(bp->keychal, lp->hsk.key, 5);
 1376                 break;
 1377         case LINUX_DVD_LU_SEND_TITLE_KEY:
 1378                 *bcode = DVDIOCREPORTKEY;
 1379                 bp->format = DVD_REPORT_TITLE_KEY;
 1380                 bp->agid = lp->lstk.agid;
 1381                 bp->lba = lp->lstk.lba;
 1382                 break;
 1383         case LINUX_DVD_LU_SEND_ASF:
 1384                 *bcode = DVDIOCREPORTKEY;
 1385                 bp->format = DVD_REPORT_ASF;
 1386                 bp->agid = lp->lsasf.agid;
 1387                 break;
 1388         case LINUX_DVD_INVALIDATE_AGID:
 1389                 *bcode = DVDIOCREPORTKEY;
 1390                 bp->format = DVD_INVALIDATE_AGID;
 1391                 bp->agid = lp->lsa.agid;
 1392                 break;
 1393         case LINUX_DVD_LU_SEND_RPC_STATE:
 1394                 *bcode = DVDIOCREPORTKEY;
 1395                 bp->format = DVD_REPORT_RPC;
 1396                 break;
 1397         case LINUX_DVD_HOST_SEND_RPC_STATE:
 1398                 *bcode = DVDIOCSENDKEY;
 1399                 bp->format = DVD_SEND_RPC;
 1400                 bp->region = lp->hrpcs.pdrc;
 1401                 break;
 1402         default:
 1403                 return (EINVAL);
 1404         }
 1405         return (0);
 1406 }
 1407 
 1408 static int
 1409 bsd_to_linux_dvd_authinfo(struct dvd_authinfo *bp, l_dvd_authinfo *lp)
 1410 {
 1411         switch (lp->type) {
 1412         case LINUX_DVD_LU_SEND_AGID:
 1413                 lp->lsa.agid = bp->agid;
 1414                 break;
 1415         case LINUX_DVD_HOST_SEND_CHALLENGE:
 1416                 lp->type = LINUX_DVD_LU_SEND_KEY1;
 1417                 break;
 1418         case LINUX_DVD_LU_SEND_KEY1:
 1419                 memcpy(lp->lsk.key, bp->keychal, sizeof(lp->lsk.key));
 1420                 break;
 1421         case LINUX_DVD_LU_SEND_CHALLENGE:
 1422                 memcpy(lp->lsc.chal, bp->keychal, sizeof(lp->lsc.chal));
 1423                 break;
 1424         case LINUX_DVD_HOST_SEND_KEY2:
 1425                 lp->type = LINUX_DVD_AUTH_ESTABLISHED;
 1426                 break;
 1427         case LINUX_DVD_LU_SEND_TITLE_KEY:
 1428                 memcpy(lp->lstk.title_key, bp->keychal,
 1429                     sizeof(lp->lstk.title_key));
 1430                 lp->lstk.cpm = bp->cpm;
 1431                 lp->lstk.cp_sec = bp->cp_sec;
 1432                 lp->lstk.cgms = bp->cgms;
 1433                 break;
 1434         case LINUX_DVD_LU_SEND_ASF:
 1435                 lp->lsasf.asf = bp->asf;
 1436                 break;
 1437         case LINUX_DVD_INVALIDATE_AGID:
 1438                 break;
 1439         case LINUX_DVD_LU_SEND_RPC_STATE:
 1440                 lp->lrpcs.type = bp->reg_type;
 1441                 lp->lrpcs.vra = bp->vend_rsts;
 1442                 lp->lrpcs.ucca = bp->user_rsts;
 1443                 lp->lrpcs.region_mask = bp->region;
 1444                 lp->lrpcs.rpc_scheme = bp->rpc_scheme;
 1445                 break;
 1446         case LINUX_DVD_HOST_SEND_RPC_STATE:
 1447                 break;
 1448         default:
 1449                 return (EINVAL);
 1450         }
 1451         return (0);
 1452 }
 1453 
 1454 static int
 1455 linux_ioctl_cdrom(struct thread *td, struct linux_ioctl_args *args)
 1456 {
 1457         cap_rights_t rights;
 1458         struct file *fp;
 1459         int error;
 1460 
 1461         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 1462         if (error != 0)
 1463                 return (error);
 1464         switch (args->cmd & 0xffff) {
 1465 
 1466         case LINUX_CDROMPAUSE:
 1467                 args->cmd = CDIOCPAUSE;
 1468                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1469                 break;
 1470 
 1471         case LINUX_CDROMRESUME:
 1472                 args->cmd = CDIOCRESUME;
 1473                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1474                 break;
 1475 
 1476         case LINUX_CDROMPLAYMSF:
 1477                 args->cmd = CDIOCPLAYMSF;
 1478                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1479                 break;
 1480 
 1481         case LINUX_CDROMPLAYTRKIND:
 1482                 args->cmd = CDIOCPLAYTRACKS;
 1483                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1484                 break;
 1485 
 1486         case LINUX_CDROMREADTOCHDR: {
 1487                 struct ioc_toc_header th;
 1488                 struct linux_cdrom_tochdr lth;
 1489                 error = fo_ioctl(fp, CDIOREADTOCHEADER, (caddr_t)&th,
 1490                     td->td_ucred, td);
 1491                 if (!error) {
 1492                         lth.cdth_trk0 = th.starting_track;
 1493                         lth.cdth_trk1 = th.ending_track;
 1494                         copyout(&lth, (void *)args->arg, sizeof(lth));
 1495                 }
 1496                 break;
 1497         }
 1498 
 1499         case LINUX_CDROMREADTOCENTRY: {
 1500                 struct linux_cdrom_tocentry lte;
 1501                 struct ioc_read_toc_single_entry irtse;
 1502 
 1503                 error = copyin((void *)args->arg, &lte, sizeof(lte));
 1504                 if (error)
 1505                         break;
 1506                 irtse.address_format = lte.cdte_format;
 1507                 irtse.track = lte.cdte_track;
 1508                 error = fo_ioctl(fp, CDIOREADTOCENTRY, (caddr_t)&irtse,
 1509                     td->td_ucred, td);
 1510                 if (!error) {
 1511                         lte.cdte_ctrl = irtse.entry.control;
 1512                         lte.cdte_adr = irtse.entry.addr_type;
 1513                         bsd_to_linux_msf_lba(irtse.address_format,
 1514                             &irtse.entry.addr, &lte.cdte_addr);
 1515                         error = copyout(&lte, (void *)args->arg, sizeof(lte));
 1516                 }
 1517                 break;
 1518         }
 1519 
 1520         case LINUX_CDROMSTOP:
 1521                 args->cmd = CDIOCSTOP;
 1522                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1523                 break;
 1524 
 1525         case LINUX_CDROMSTART:
 1526                 args->cmd = CDIOCSTART;
 1527                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1528                 break;
 1529 
 1530         case LINUX_CDROMEJECT:
 1531                 args->cmd = CDIOCEJECT;
 1532                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1533                 break;
 1534 
 1535         /* LINUX_CDROMVOLCTRL */
 1536 
 1537         case LINUX_CDROMSUBCHNL: {
 1538                 struct linux_cdrom_subchnl sc;
 1539                 struct ioc_read_subchannel bsdsc;
 1540                 struct cd_sub_channel_info bsdinfo;
 1541 
 1542                 bsdsc.address_format = CD_LBA_FORMAT;
 1543                 bsdsc.data_format = CD_CURRENT_POSITION;
 1544                 bsdsc.track = 0;
 1545                 bsdsc.data_len = sizeof(bsdinfo);
 1546                 bsdsc.data = &bsdinfo;
 1547                 error = fo_ioctl(fp, CDIOCREADSUBCHANNEL_SYSSPACE,
 1548                     (caddr_t)&bsdsc, td->td_ucred, td);
 1549                 if (error)
 1550                         break;
 1551                 error = copyin((void *)args->arg, &sc, sizeof(sc));
 1552                 if (error)
 1553                         break;
 1554                 sc.cdsc_audiostatus = bsdinfo.header.audio_status;
 1555                 sc.cdsc_adr = bsdinfo.what.position.addr_type;
 1556                 sc.cdsc_ctrl = bsdinfo.what.position.control;
 1557                 sc.cdsc_trk = bsdinfo.what.position.track_number;
 1558                 sc.cdsc_ind = bsdinfo.what.position.index_number;
 1559                 set_linux_cdrom_addr(&sc.cdsc_absaddr, sc.cdsc_format,
 1560                     bsdinfo.what.position.absaddr.lba);
 1561                 set_linux_cdrom_addr(&sc.cdsc_reladdr, sc.cdsc_format,
 1562                     bsdinfo.what.position.reladdr.lba);
 1563                 error = copyout(&sc, (void *)args->arg, sizeof(sc));
 1564                 break;
 1565         }
 1566 
 1567         /* LINUX_CDROMREADMODE2 */
 1568         /* LINUX_CDROMREADMODE1 */
 1569         /* LINUX_CDROMREADAUDIO */
 1570         /* LINUX_CDROMEJECT_SW */
 1571         /* LINUX_CDROMMULTISESSION */
 1572         /* LINUX_CDROM_GET_UPC */
 1573 
 1574         case LINUX_CDROMRESET:
 1575                 args->cmd = CDIOCRESET;
 1576                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 1577                 break;
 1578 
 1579         /* LINUX_CDROMVOLREAD */
 1580         /* LINUX_CDROMREADRAW */
 1581         /* LINUX_CDROMREADCOOKED */
 1582         /* LINUX_CDROMSEEK */
 1583         /* LINUX_CDROMPLAYBLK */
 1584         /* LINUX_CDROMREADALL */
 1585         /* LINUX_CDROMCLOSETRAY */
 1586         /* LINUX_CDROMLOADFROMSLOT */
 1587         /* LINUX_CDROMGETSPINDOWN */
 1588         /* LINUX_CDROMSETSPINDOWN */
 1589         /* LINUX_CDROM_SET_OPTIONS */
 1590         /* LINUX_CDROM_CLEAR_OPTIONS */
 1591         /* LINUX_CDROM_SELECT_SPEED */
 1592         /* LINUX_CDROM_SELECT_DISC */
 1593         /* LINUX_CDROM_MEDIA_CHANGED */
 1594         /* LINUX_CDROM_DRIVE_STATUS */
 1595         /* LINUX_CDROM_DISC_STATUS */
 1596         /* LINUX_CDROM_CHANGER_NSLOTS */
 1597         /* LINUX_CDROM_LOCKDOOR */
 1598         /* LINUX_CDROM_DEBUG */
 1599         /* LINUX_CDROM_GET_CAPABILITY */
 1600         /* LINUX_CDROMAUDIOBUFSIZ */
 1601 
 1602         case LINUX_DVD_READ_STRUCT: {
 1603                 l_dvd_struct *lds;
 1604                 struct dvd_struct *bds;
 1605 
 1606                 lds = malloc(sizeof(*lds), M_LINUX, M_WAITOK);
 1607                 bds = malloc(sizeof(*bds), M_LINUX, M_WAITOK);
 1608                 error = copyin((void *)args->arg, lds, sizeof(*lds));
 1609                 if (error)
 1610                         goto out;
 1611                 error = linux_to_bsd_dvd_struct(lds, bds);
 1612                 if (error)
 1613                         goto out;
 1614                 error = fo_ioctl(fp, DVDIOCREADSTRUCTURE, (caddr_t)bds,
 1615                     td->td_ucred, td);
 1616                 if (error)
 1617                         goto out;
 1618                 error = bsd_to_linux_dvd_struct(bds, lds);
 1619                 if (error)
 1620                         goto out;
 1621                 error = copyout(lds, (void *)args->arg, sizeof(*lds));
 1622         out:
 1623                 free(bds, M_LINUX);
 1624                 free(lds, M_LINUX);
 1625                 break;
 1626         }
 1627 
 1628         /* LINUX_DVD_WRITE_STRUCT */
 1629 
 1630         case LINUX_DVD_AUTH: {
 1631                 l_dvd_authinfo lda;
 1632                 struct dvd_authinfo bda;
 1633                 int bcode;
 1634 
 1635                 error = copyin((void *)args->arg, &lda, sizeof(lda));
 1636                 if (error)
 1637                         break;
 1638                 error = linux_to_bsd_dvd_authinfo(&lda, &bcode, &bda);
 1639                 if (error)
 1640                         break;
 1641                 error = fo_ioctl(fp, bcode, (caddr_t)&bda, td->td_ucred,
 1642                     td);
 1643                 if (error) {
 1644                         if (lda.type == LINUX_DVD_HOST_SEND_KEY2) {
 1645                                 lda.type = LINUX_DVD_AUTH_FAILURE;
 1646                                 copyout(&lda, (void *)args->arg, sizeof(lda));
 1647                         }
 1648                         break;
 1649                 }
 1650                 error = bsd_to_linux_dvd_authinfo(&bda, &lda);
 1651                 if (error)
 1652                         break;
 1653                 error = copyout(&lda, (void *)args->arg, sizeof(lda));
 1654                 break;
 1655         }
 1656 
 1657         case LINUX_SCSI_GET_BUS_NUMBER:
 1658         {
 1659                 struct sg_scsi_id id;
 1660 
 1661                 error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
 1662                     td->td_ucred, td);
 1663                 if (error)
 1664                         break;
 1665                 error = copyout(&id.channel, (void *)args->arg, sizeof(int));
 1666                 break;
 1667         }
 1668 
 1669         case LINUX_SCSI_GET_IDLUN:
 1670         {
 1671                 struct sg_scsi_id id;
 1672                 struct scsi_idlun idl;
 1673 
 1674                 error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
 1675                     td->td_ucred, td);
 1676                 if (error)
 1677                         break;
 1678                 idl.dev_id = (id.scsi_id & 0xff) + ((id.lun & 0xff) << 8) +
 1679                     ((id.channel & 0xff) << 16) + ((id.host_no & 0xff) << 24);
 1680                 idl.host_unique_id = id.host_no;
 1681                 error = copyout(&idl, (void *)args->arg, sizeof(idl));
 1682                 break;
 1683         }
 1684 
 1685         /* LINUX_CDROM_SEND_PACKET */
 1686         /* LINUX_CDROM_NEXT_WRITABLE */
 1687         /* LINUX_CDROM_LAST_WRITTEN */
 1688 
 1689         default:
 1690                 error = ENOIOCTL;
 1691                 break;
 1692         }
 1693 
 1694         fdrop(fp, td);
 1695         return (error);
 1696 }
 1697 
 1698 static int
 1699 linux_ioctl_vfat(struct thread *td, struct linux_ioctl_args *args)
 1700 {
 1701 
 1702         return (ENOTTY);
 1703 }
 1704 
 1705 /*
 1706  * Sound related ioctls
 1707  */
 1708 
 1709 struct linux_old_mixer_info {
 1710         char    id[16];
 1711         char    name[32];
 1712 };
 1713 
 1714 static u_int32_t dirbits[4] = { IOC_VOID, IOC_IN, IOC_OUT, IOC_INOUT };
 1715 
 1716 #define SETDIR(c)       (((c) & ~IOC_DIRMASK) | dirbits[args->cmd >> 30])
 1717 
 1718 static int
 1719 linux_ioctl_sound(struct thread *td, struct linux_ioctl_args *args)
 1720 {
 1721 
 1722         switch (args->cmd & 0xffff) {
 1723 
 1724         case LINUX_SOUND_MIXER_WRITE_VOLUME:
 1725                 args->cmd = SETDIR(SOUND_MIXER_WRITE_VOLUME);
 1726                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1727 
 1728         case LINUX_SOUND_MIXER_WRITE_BASS:
 1729                 args->cmd = SETDIR(SOUND_MIXER_WRITE_BASS);
 1730                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1731 
 1732         case LINUX_SOUND_MIXER_WRITE_TREBLE:
 1733                 args->cmd = SETDIR(SOUND_MIXER_WRITE_TREBLE);
 1734                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1735 
 1736         case LINUX_SOUND_MIXER_WRITE_SYNTH:
 1737                 args->cmd = SETDIR(SOUND_MIXER_WRITE_SYNTH);
 1738                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1739 
 1740         case LINUX_SOUND_MIXER_WRITE_PCM:
 1741                 args->cmd = SETDIR(SOUND_MIXER_WRITE_PCM);
 1742                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1743 
 1744         case LINUX_SOUND_MIXER_WRITE_SPEAKER:
 1745                 args->cmd = SETDIR(SOUND_MIXER_WRITE_SPEAKER);
 1746                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1747 
 1748         case LINUX_SOUND_MIXER_WRITE_LINE:
 1749                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE);
 1750                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1751 
 1752         case LINUX_SOUND_MIXER_WRITE_MIC:
 1753                 args->cmd = SETDIR(SOUND_MIXER_WRITE_MIC);
 1754                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1755 
 1756         case LINUX_SOUND_MIXER_WRITE_CD:
 1757                 args->cmd = SETDIR(SOUND_MIXER_WRITE_CD);
 1758                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1759 
 1760         case LINUX_SOUND_MIXER_WRITE_IMIX:
 1761                 args->cmd = SETDIR(SOUND_MIXER_WRITE_IMIX);
 1762                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1763 
 1764         case LINUX_SOUND_MIXER_WRITE_ALTPCM:
 1765                 args->cmd = SETDIR(SOUND_MIXER_WRITE_ALTPCM);
 1766                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1767 
 1768         case LINUX_SOUND_MIXER_WRITE_RECLEV:
 1769                 args->cmd = SETDIR(SOUND_MIXER_WRITE_RECLEV);
 1770                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1771 
 1772         case LINUX_SOUND_MIXER_WRITE_IGAIN:
 1773                 args->cmd = SETDIR(SOUND_MIXER_WRITE_IGAIN);
 1774                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1775 
 1776         case LINUX_SOUND_MIXER_WRITE_OGAIN:
 1777                 args->cmd = SETDIR(SOUND_MIXER_WRITE_OGAIN);
 1778                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1779 
 1780         case LINUX_SOUND_MIXER_WRITE_LINE1:
 1781                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE1);
 1782                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1783 
 1784         case LINUX_SOUND_MIXER_WRITE_LINE2:
 1785                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE2);
 1786                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1787 
 1788         case LINUX_SOUND_MIXER_WRITE_LINE3:
 1789                 args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE3);
 1790                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1791 
 1792         case LINUX_SOUND_MIXER_INFO: {
 1793                 /* Key on encoded length */
 1794                 switch ((args->cmd >> 16) & 0x1fff) {
 1795                 case 0x005c: {  /* SOUND_MIXER_INFO */
 1796                         args->cmd = SOUND_MIXER_INFO;
 1797                         return (sys_ioctl(td, (struct ioctl_args *)args));
 1798                 }
 1799                 case 0x0030: {  /* SOUND_OLD_MIXER_INFO */
 1800                         struct linux_old_mixer_info info;
 1801                         bzero(&info, sizeof(info));
 1802                         strncpy(info.id, "OSS", sizeof(info.id) - 1);
 1803                         strncpy(info.name, "FreeBSD OSS Mixer", sizeof(info.name) - 1);
 1804                         copyout(&info, (void *)args->arg, sizeof(info));
 1805                         return (0);
 1806                 }
 1807                 default:
 1808                         return (ENOIOCTL);
 1809                 }
 1810                 break;
 1811         }
 1812 
 1813         case LINUX_OSS_GETVERSION: {
 1814                 int version = linux_get_oss_version(td);
 1815                 return (copyout(&version, (void *)args->arg, sizeof(int)));
 1816         }
 1817 
 1818         case LINUX_SOUND_MIXER_READ_STEREODEVS:
 1819                 args->cmd = SOUND_MIXER_READ_STEREODEVS;
 1820                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1821 
 1822         case LINUX_SOUND_MIXER_READ_CAPS:
 1823                 args->cmd = SOUND_MIXER_READ_CAPS;
 1824                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1825 
 1826         case LINUX_SOUND_MIXER_READ_RECMASK:
 1827                 args->cmd = SOUND_MIXER_READ_RECMASK;
 1828                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1829 
 1830         case LINUX_SOUND_MIXER_READ_DEVMASK:
 1831                 args->cmd = SOUND_MIXER_READ_DEVMASK;
 1832                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1833 
 1834         case LINUX_SOUND_MIXER_WRITE_RECSRC:
 1835                 args->cmd = SETDIR(SOUND_MIXER_WRITE_RECSRC);
 1836                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1837 
 1838         case LINUX_SNDCTL_DSP_RESET:
 1839                 args->cmd = SNDCTL_DSP_RESET;
 1840                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1841 
 1842         case LINUX_SNDCTL_DSP_SYNC:
 1843                 args->cmd = SNDCTL_DSP_SYNC;
 1844                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1845 
 1846         case LINUX_SNDCTL_DSP_SPEED:
 1847                 args->cmd = SNDCTL_DSP_SPEED;
 1848                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1849 
 1850         case LINUX_SNDCTL_DSP_STEREO:
 1851                 args->cmd = SNDCTL_DSP_STEREO;
 1852                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1853 
 1854         case LINUX_SNDCTL_DSP_GETBLKSIZE: /* LINUX_SNDCTL_DSP_SETBLKSIZE */
 1855                 args->cmd = SNDCTL_DSP_GETBLKSIZE;
 1856                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1857 
 1858         case LINUX_SNDCTL_DSP_SETFMT:
 1859                 args->cmd = SNDCTL_DSP_SETFMT;
 1860                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1861 
 1862         case LINUX_SOUND_PCM_WRITE_CHANNELS:
 1863                 args->cmd = SOUND_PCM_WRITE_CHANNELS;
 1864                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1865 
 1866         case LINUX_SOUND_PCM_WRITE_FILTER:
 1867                 args->cmd = SOUND_PCM_WRITE_FILTER;
 1868                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1869 
 1870         case LINUX_SNDCTL_DSP_POST:
 1871                 args->cmd = SNDCTL_DSP_POST;
 1872                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1873 
 1874         case LINUX_SNDCTL_DSP_SUBDIVIDE:
 1875                 args->cmd = SNDCTL_DSP_SUBDIVIDE;
 1876                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1877 
 1878         case LINUX_SNDCTL_DSP_SETFRAGMENT:
 1879                 args->cmd = SNDCTL_DSP_SETFRAGMENT;
 1880                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1881 
 1882         case LINUX_SNDCTL_DSP_GETFMTS:
 1883                 args->cmd = SNDCTL_DSP_GETFMTS;
 1884                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1885 
 1886         case LINUX_SNDCTL_DSP_GETOSPACE:
 1887                 args->cmd = SNDCTL_DSP_GETOSPACE;
 1888                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1889 
 1890         case LINUX_SNDCTL_DSP_GETISPACE:
 1891                 args->cmd = SNDCTL_DSP_GETISPACE;
 1892                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1893 
 1894         case LINUX_SNDCTL_DSP_NONBLOCK:
 1895                 args->cmd = SNDCTL_DSP_NONBLOCK;
 1896                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1897 
 1898         case LINUX_SNDCTL_DSP_GETCAPS:
 1899                 args->cmd = SNDCTL_DSP_GETCAPS;
 1900                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1901 
 1902         case LINUX_SNDCTL_DSP_SETTRIGGER: /* LINUX_SNDCTL_GETTRIGGER */
 1903                 args->cmd = SNDCTL_DSP_SETTRIGGER;
 1904                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1905 
 1906         case LINUX_SNDCTL_DSP_GETIPTR:
 1907                 args->cmd = SNDCTL_DSP_GETIPTR;
 1908                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1909 
 1910         case LINUX_SNDCTL_DSP_GETOPTR:
 1911                 args->cmd = SNDCTL_DSP_GETOPTR;
 1912                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1913 
 1914         case LINUX_SNDCTL_DSP_SETDUPLEX:
 1915                 args->cmd = SNDCTL_DSP_SETDUPLEX;
 1916                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1917 
 1918         case LINUX_SNDCTL_DSP_GETODELAY:
 1919                 args->cmd = SNDCTL_DSP_GETODELAY;
 1920                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1921 
 1922         case LINUX_SNDCTL_SEQ_RESET:
 1923                 args->cmd = SNDCTL_SEQ_RESET;
 1924                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1925 
 1926         case LINUX_SNDCTL_SEQ_SYNC:
 1927                 args->cmd = SNDCTL_SEQ_SYNC;
 1928                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1929 
 1930         case LINUX_SNDCTL_SYNTH_INFO:
 1931                 args->cmd = SNDCTL_SYNTH_INFO;
 1932                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1933 
 1934         case LINUX_SNDCTL_SEQ_CTRLRATE:
 1935                 args->cmd = SNDCTL_SEQ_CTRLRATE;
 1936                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1937 
 1938         case LINUX_SNDCTL_SEQ_GETOUTCOUNT:
 1939                 args->cmd = SNDCTL_SEQ_GETOUTCOUNT;
 1940                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1941 
 1942         case LINUX_SNDCTL_SEQ_GETINCOUNT:
 1943                 args->cmd = SNDCTL_SEQ_GETINCOUNT;
 1944                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1945 
 1946         case LINUX_SNDCTL_SEQ_PERCMODE:
 1947                 args->cmd = SNDCTL_SEQ_PERCMODE;
 1948                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1949 
 1950         case LINUX_SNDCTL_FM_LOAD_INSTR:
 1951                 args->cmd = SNDCTL_FM_LOAD_INSTR;
 1952                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1953 
 1954         case LINUX_SNDCTL_SEQ_TESTMIDI:
 1955                 args->cmd = SNDCTL_SEQ_TESTMIDI;
 1956                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1957 
 1958         case LINUX_SNDCTL_SEQ_RESETSAMPLES:
 1959                 args->cmd = SNDCTL_SEQ_RESETSAMPLES;
 1960                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1961 
 1962         case LINUX_SNDCTL_SEQ_NRSYNTHS:
 1963                 args->cmd = SNDCTL_SEQ_NRSYNTHS;
 1964                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1965 
 1966         case LINUX_SNDCTL_SEQ_NRMIDIS:
 1967                 args->cmd = SNDCTL_SEQ_NRMIDIS;
 1968                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1969 
 1970         case LINUX_SNDCTL_MIDI_INFO:
 1971                 args->cmd = SNDCTL_MIDI_INFO;
 1972                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1973 
 1974         case LINUX_SNDCTL_SEQ_TRESHOLD:
 1975                 args->cmd = SNDCTL_SEQ_TRESHOLD;
 1976                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1977 
 1978         case LINUX_SNDCTL_SYNTH_MEMAVL:
 1979                 args->cmd = SNDCTL_SYNTH_MEMAVL;
 1980                 return (sys_ioctl(td, (struct ioctl_args *)args));
 1981 
 1982         }
 1983 
 1984         return (ENOIOCTL);
 1985 }
 1986 
 1987 /*
 1988  * Console related ioctls
 1989  */
 1990 
 1991 static int
 1992 linux_ioctl_console(struct thread *td, struct linux_ioctl_args *args)
 1993 {
 1994         cap_rights_t rights;
 1995         struct file *fp;
 1996         int error;
 1997 
 1998         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 1999         if (error != 0)
 2000                 return (error);
 2001         switch (args->cmd & 0xffff) {
 2002 
 2003         case LINUX_KIOCSOUND:
 2004                 args->cmd = KIOCSOUND;
 2005                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2006                 break;
 2007 
 2008         case LINUX_KDMKTONE:
 2009                 args->cmd = KDMKTONE;
 2010                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2011                 break;
 2012 
 2013         case LINUX_KDGETLED:
 2014                 args->cmd = KDGETLED;
 2015                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2016                 break;
 2017 
 2018         case LINUX_KDSETLED:
 2019                 args->cmd = KDSETLED;
 2020                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2021                 break;
 2022 
 2023         case LINUX_KDSETMODE:
 2024                 args->cmd = KDSETMODE;
 2025                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2026                 break;
 2027 
 2028         case LINUX_KDGETMODE:
 2029                 args->cmd = KDGETMODE;
 2030                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2031                 break;
 2032 
 2033         case LINUX_KDGKBMODE:
 2034                 args->cmd = KDGKBMODE;
 2035                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2036                 break;
 2037 
 2038         case LINUX_KDSKBMODE: {
 2039                 int kbdmode;
 2040                 switch (args->arg) {
 2041                 case LINUX_KBD_RAW:
 2042                         kbdmode = K_RAW;
 2043                         break;
 2044                 case LINUX_KBD_XLATE:
 2045                         kbdmode = K_XLATE;
 2046                         break;
 2047                 case LINUX_KBD_MEDIUMRAW:
 2048                         kbdmode = K_RAW;
 2049                         break;
 2050                 default:
 2051                         fdrop(fp, td);
 2052                         return (EINVAL);
 2053                 }
 2054                 error = (fo_ioctl(fp, KDSKBMODE, (caddr_t)&kbdmode,
 2055                     td->td_ucred, td));
 2056                 break;
 2057         }
 2058 
 2059         case LINUX_VT_OPENQRY:
 2060                 args->cmd = VT_OPENQRY;
 2061                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2062                 break;
 2063 
 2064         case LINUX_VT_GETMODE:
 2065                 args->cmd = VT_GETMODE;
 2066                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2067                 break;
 2068 
 2069         case LINUX_VT_SETMODE: {
 2070                 struct vt_mode mode;
 2071                 if ((error = copyin((void *)args->arg, &mode, sizeof(mode))))
 2072                         break;
 2073                 if (LINUX_SIG_VALID(mode.relsig))
 2074                         mode.relsig = linux_to_bsd_signal(mode.relsig);
 2075                 else
 2076                         mode.relsig = 0;
 2077                 if (LINUX_SIG_VALID(mode.acqsig))
 2078                         mode.acqsig = linux_to_bsd_signal(mode.acqsig);
 2079                 else
 2080                         mode.acqsig = 0;
 2081                 /* XXX. Linux ignores frsig and set it to 0. */
 2082                 mode.frsig = 0;
 2083                 if ((error = copyout(&mode, (void *)args->arg, sizeof(mode))))
 2084                         break;
 2085                 args->cmd = VT_SETMODE;
 2086                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2087                 break;
 2088         }
 2089 
 2090         case LINUX_VT_GETSTATE:
 2091                 args->cmd = VT_GETACTIVE;
 2092                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2093                 break;
 2094 
 2095         case LINUX_VT_RELDISP:
 2096                 args->cmd = VT_RELDISP;
 2097                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2098                 break;
 2099 
 2100         case LINUX_VT_ACTIVATE:
 2101                 args->cmd = VT_ACTIVATE;
 2102                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2103                 break;
 2104 
 2105         case LINUX_VT_WAITACTIVE:
 2106                 args->cmd = VT_WAITACTIVE;
 2107                 error = (sys_ioctl(td, (struct ioctl_args *)args));
 2108                 break;
 2109 
 2110         default:
 2111                 error = ENOIOCTL;
 2112                 break;
 2113         }
 2114 
 2115         fdrop(fp, td);
 2116         return (error);
 2117 }
 2118 
 2119 /*
 2120  * Criteria for interface name translation
 2121  */
 2122 #define IFP_IS_ETH(ifp) (ifp->if_type == IFT_ETHER)
 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                 memset(ifname, 0, sizeof(ifname));
 2431                 ifp = ifname_linux_to_bsd(td, lifname, ifname);
 2432                 if (ifp == NULL)
 2433                         return (EINVAL);
 2434                 /*
 2435                  * We need to copy it back out in case we pass the
 2436                  * request on to our native ioctl(), which will expect
 2437                  * the ifreq to be in user space and have the correct
 2438                  * interface name.
 2439                  */
 2440                 error = copyout(ifname, (void *)args->arg, IFNAMSIZ);
 2441                 if (error != 0)
 2442                         return (error);
 2443 #ifdef DEBUG
 2444                 printf("%s(): %s translated to %s\n", __func__,
 2445                     lifname, ifname);
 2446 #endif
 2447                 break;
 2448 
 2449         default:
 2450                 return (ENOIOCTL);
 2451         }
 2452 
 2453         switch (args->cmd & 0xffff) {
 2454 
 2455         case LINUX_FIOSETOWN:
 2456                 args->cmd = FIOSETOWN;
 2457                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2458                 break;
 2459 
 2460         case LINUX_SIOCSPGRP:
 2461                 args->cmd = SIOCSPGRP;
 2462                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2463                 break;
 2464 
 2465         case LINUX_FIOGETOWN:
 2466                 args->cmd = FIOGETOWN;
 2467                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2468                 break;
 2469 
 2470         case LINUX_SIOCGPGRP:
 2471                 args->cmd = SIOCGPGRP;
 2472                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2473                 break;
 2474 
 2475         case LINUX_SIOCATMARK:
 2476                 args->cmd = SIOCATMARK;
 2477                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2478                 break;
 2479 
 2480         /* LINUX_SIOCGSTAMP */
 2481 
 2482         case LINUX_SIOCGIFCONF:
 2483                 error = linux_ifconf(td, (struct ifconf *)args->arg);
 2484                 break;
 2485 
 2486         case LINUX_SIOCGIFFLAGS:
 2487                 args->cmd = SIOCGIFFLAGS;
 2488                 error = linux_gifflags(td, ifp, (struct l_ifreq *)args->arg);
 2489                 break;
 2490 
 2491         case LINUX_SIOCGIFADDR:
 2492                 args->cmd = SIOCGIFADDR;
 2493                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2494                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2495                 break;
 2496 
 2497         case LINUX_SIOCSIFADDR:
 2498                 /* XXX probably doesn't work, included for completeness */
 2499                 args->cmd = SIOCSIFADDR;
 2500                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2501                 break;
 2502 
 2503         case LINUX_SIOCGIFDSTADDR:
 2504                 args->cmd = SIOCGIFDSTADDR;
 2505                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2506                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2507                 break;
 2508 
 2509         case LINUX_SIOCGIFBRDADDR:
 2510                 args->cmd = SIOCGIFBRDADDR;
 2511                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2512                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2513                 break;
 2514 
 2515         case LINUX_SIOCGIFNETMASK:
 2516                 args->cmd = SIOCGIFNETMASK;
 2517                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2518                 bsd_to_linux_ifreq((struct ifreq *)args->arg);
 2519                 break;
 2520 
 2521         case LINUX_SIOCSIFNETMASK:
 2522                 error = ENOIOCTL;
 2523                 break;
 2524 
 2525         case LINUX_SIOCGIFMTU:
 2526                 args->cmd = SIOCGIFMTU;
 2527                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2528                 break;
 2529 
 2530         case LINUX_SIOCSIFMTU:
 2531                 args->cmd = SIOCSIFMTU;
 2532                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2533                 break;
 2534 
 2535         case LINUX_SIOCSIFNAME:
 2536                 error = ENOIOCTL;
 2537                 break;
 2538 
 2539         case LINUX_SIOCGIFHWADDR:
 2540                 error = linux_gifhwaddr(ifp, (struct l_ifreq *)args->arg);
 2541                 break;
 2542 
 2543         case LINUX_SIOCSIFHWADDR:
 2544                 error = ENOIOCTL;
 2545                 break;
 2546 
 2547         case LINUX_SIOCADDMULTI:
 2548                 args->cmd = SIOCADDMULTI;
 2549                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2550                 break;
 2551 
 2552         case LINUX_SIOCDELMULTI:
 2553                 args->cmd = SIOCDELMULTI;
 2554                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2555                 break;
 2556 
 2557         case LINUX_SIOCGIFINDEX:
 2558                 args->cmd = SIOCGIFINDEX;
 2559                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2560                 break;
 2561 
 2562         case LINUX_SIOCGIFCOUNT:
 2563                 error = 0;
 2564                 break;
 2565 
 2566         /*
 2567          * XXX This is slightly bogus, but these ioctls are currently
 2568          * XXX only used by the aironet (if_an) network driver.
 2569          */
 2570         case LINUX_SIOCDEVPRIVATE:
 2571                 args->cmd = SIOCGPRIVATE_0;
 2572                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2573                 break;
 2574 
 2575         case LINUX_SIOCDEVPRIVATE+1:
 2576                 args->cmd = SIOCGPRIVATE_1;
 2577                 error = sys_ioctl(td, (struct ioctl_args *)args);
 2578                 break;
 2579         }
 2580 
 2581         if (ifp != NULL)
 2582                 /* restore the original interface name */
 2583                 copyout(lifname, (void *)args->arg, LINUX_IFNAMSIZ);
 2584 
 2585 #ifdef DEBUG
 2586         printf("%s(): returning %d\n", __func__, error);
 2587 #endif
 2588         return (error);
 2589 }
 2590 
 2591 /*
 2592  * Device private ioctl handler
 2593  */
 2594 static int
 2595 linux_ioctl_private(struct thread *td, struct linux_ioctl_args *args)
 2596 {
 2597         cap_rights_t rights;
 2598         struct file *fp;
 2599         int error, type;
 2600 
 2601         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 2602         if (error != 0)
 2603                 return (error);
 2604         type = fp->f_type;
 2605         fdrop(fp, td);
 2606         if (type == DTYPE_SOCKET)
 2607                 return (linux_ioctl_socket(td, args));
 2608         return (ENOIOCTL);
 2609 }
 2610 
 2611 /*
 2612  * DRM ioctl handler (sys/dev/drm)
 2613  */
 2614 static int
 2615 linux_ioctl_drm(struct thread *td, struct linux_ioctl_args *args)
 2616 {
 2617         args->cmd = SETDIR(args->cmd);
 2618         return sys_ioctl(td, (struct ioctl_args *)args);
 2619 }
 2620 
 2621 #ifdef COMPAT_LINUX32
 2622 #define CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0)
 2623 #define PTRIN_CP(src,dst,fld) \
 2624         do { (dst).fld = PTRIN((src).fld); } while (0)
 2625 #define PTROUT_CP(src,dst,fld) \
 2626         do { (dst).fld = PTROUT((src).fld); } while (0)
 2627 
 2628 static int
 2629 linux_ioctl_sg_io(struct thread *td, struct linux_ioctl_args *args)
 2630 {
 2631         struct sg_io_hdr io;
 2632         struct sg_io_hdr32 io32;
 2633         cap_rights_t rights;
 2634         struct file *fp;
 2635         int error;
 2636 
 2637         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 2638         if (error != 0) {
 2639                 printf("sg_linux_ioctl: fget returned %d\n", error);
 2640                 return (error);
 2641         }
 2642 
 2643         if ((error = copyin((void *)args->arg, &io32, sizeof(io32))) != 0)
 2644                 goto out;
 2645 
 2646         CP(io32, io, interface_id);
 2647         CP(io32, io, dxfer_direction);
 2648         CP(io32, io, cmd_len);
 2649         CP(io32, io, mx_sb_len);
 2650         CP(io32, io, iovec_count);
 2651         CP(io32, io, dxfer_len);
 2652         PTRIN_CP(io32, io, dxferp);
 2653         PTRIN_CP(io32, io, cmdp);
 2654         PTRIN_CP(io32, io, sbp);
 2655         CP(io32, io, timeout);
 2656         CP(io32, io, flags);
 2657         CP(io32, io, pack_id);
 2658         PTRIN_CP(io32, io, usr_ptr);
 2659         CP(io32, io, status);
 2660         CP(io32, io, masked_status);
 2661         CP(io32, io, msg_status);
 2662         CP(io32, io, sb_len_wr);
 2663         CP(io32, io, host_status);
 2664         CP(io32, io, driver_status);
 2665         CP(io32, io, resid);
 2666         CP(io32, io, duration);
 2667         CP(io32, io, info);
 2668 
 2669         if ((error = fo_ioctl(fp, SG_IO, (caddr_t)&io, td->td_ucred, td)) != 0)
 2670                 goto out;
 2671 
 2672         CP(io, io32, interface_id);
 2673         CP(io, io32, dxfer_direction);
 2674         CP(io, io32, cmd_len);
 2675         CP(io, io32, mx_sb_len);
 2676         CP(io, io32, iovec_count);
 2677         CP(io, io32, dxfer_len);
 2678         PTROUT_CP(io, io32, dxferp);
 2679         PTROUT_CP(io, io32, cmdp);
 2680         PTROUT_CP(io, io32, sbp);
 2681         CP(io, io32, timeout);
 2682         CP(io, io32, flags);
 2683         CP(io, io32, pack_id);
 2684         PTROUT_CP(io, io32, usr_ptr);
 2685         CP(io, io32, status);
 2686         CP(io, io32, masked_status);
 2687         CP(io, io32, msg_status);
 2688         CP(io, io32, sb_len_wr);
 2689         CP(io, io32, host_status);
 2690         CP(io, io32, driver_status);
 2691         CP(io, io32, resid);
 2692         CP(io, io32, duration);
 2693         CP(io, io32, info);
 2694 
 2695         error = copyout(&io32, (void *)args->arg, sizeof(io32));
 2696 
 2697 out:
 2698         fdrop(fp, td);
 2699         return (error);
 2700 }
 2701 #endif
 2702 
 2703 static int
 2704 linux_ioctl_sg(struct thread *td, struct linux_ioctl_args *args)
 2705 {
 2706 
 2707         switch (args->cmd) {
 2708         case LINUX_SG_GET_VERSION_NUM:
 2709                 args->cmd = SG_GET_VERSION_NUM;
 2710                 break;
 2711         case LINUX_SG_SET_TIMEOUT:
 2712                 args->cmd = SG_SET_TIMEOUT;
 2713                 break;
 2714         case LINUX_SG_GET_TIMEOUT:
 2715                 args->cmd = SG_GET_TIMEOUT;
 2716                 break;
 2717         case LINUX_SG_IO:
 2718                 args->cmd = SG_IO;
 2719 #ifdef COMPAT_LINUX32
 2720                 return (linux_ioctl_sg_io(td, args));
 2721 #endif
 2722                 break;
 2723         case LINUX_SG_GET_RESERVED_SIZE:
 2724                 args->cmd = SG_GET_RESERVED_SIZE;
 2725                 break;
 2726         case LINUX_SG_GET_SCSI_ID:
 2727                 args->cmd = SG_GET_SCSI_ID;
 2728                 break;
 2729         case LINUX_SG_GET_SG_TABLESIZE:
 2730                 args->cmd = SG_GET_SG_TABLESIZE;
 2731                 break;
 2732         default:
 2733                 return (ENODEV);
 2734         }
 2735         return (sys_ioctl(td, (struct ioctl_args *)args));
 2736 }
 2737 
 2738 /*
 2739  * Video4Linux (V4L) ioctl handler
 2740  */
 2741 static int
 2742 linux_to_bsd_v4l_tuner(struct l_video_tuner *lvt, struct video_tuner *vt)
 2743 {
 2744         vt->tuner = lvt->tuner;
 2745         strlcpy(vt->name, lvt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
 2746         vt->rangelow = lvt->rangelow;   /* possible long size conversion */
 2747         vt->rangehigh = lvt->rangehigh; /* possible long size conversion */
 2748         vt->flags = lvt->flags;
 2749         vt->mode = lvt->mode;
 2750         vt->signal = lvt->signal;
 2751         return (0);
 2752 }
 2753 
 2754 static int
 2755 bsd_to_linux_v4l_tuner(struct video_tuner *vt, struct l_video_tuner *lvt)
 2756 {
 2757         lvt->tuner = vt->tuner;
 2758         strlcpy(lvt->name, vt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
 2759         lvt->rangelow = vt->rangelow;   /* possible long size conversion */
 2760         lvt->rangehigh = vt->rangehigh; /* possible long size conversion */
 2761         lvt->flags = vt->flags;
 2762         lvt->mode = vt->mode;
 2763         lvt->signal = vt->signal;
 2764         return (0);
 2765 }
 2766 
 2767 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2768 static int
 2769 linux_to_bsd_v4l_clip(struct l_video_clip *lvc, struct video_clip *vc)
 2770 {
 2771         vc->x = lvc->x;
 2772         vc->y = lvc->y;
 2773         vc->width = lvc->width;
 2774         vc->height = lvc->height;
 2775         vc->next = PTRIN(lvc->next);    /* possible pointer size conversion */
 2776         return (0);
 2777 }
 2778 #endif
 2779 
 2780 static int
 2781 linux_to_bsd_v4l_window(struct l_video_window *lvw, struct video_window *vw)
 2782 {
 2783         vw->x = lvw->x;
 2784         vw->y = lvw->y;
 2785         vw->width = lvw->width;
 2786         vw->height = lvw->height;
 2787         vw->chromakey = lvw->chromakey;
 2788         vw->flags = lvw->flags;
 2789         vw->clips = PTRIN(lvw->clips);  /* possible pointer size conversion */
 2790         vw->clipcount = lvw->clipcount;
 2791         return (0);
 2792 }
 2793 
 2794 static int
 2795 bsd_to_linux_v4l_window(struct video_window *vw, struct l_video_window *lvw)
 2796 {
 2797         lvw->x = vw->x;
 2798         lvw->y = vw->y;
 2799         lvw->width = vw->width;
 2800         lvw->height = vw->height;
 2801         lvw->chromakey = vw->chromakey;
 2802         lvw->flags = vw->flags;
 2803         lvw->clips = PTROUT(vw->clips); /* possible pointer size conversion */
 2804         lvw->clipcount = vw->clipcount;
 2805         return (0);
 2806 }
 2807 
 2808 static int
 2809 linux_to_bsd_v4l_buffer(struct l_video_buffer *lvb, struct video_buffer *vb)
 2810 {
 2811         vb->base = PTRIN(lvb->base);    /* possible pointer size conversion */
 2812         vb->height = lvb->height;
 2813         vb->width = lvb->width;
 2814         vb->depth = lvb->depth;
 2815         vb->bytesperline = lvb->bytesperline;
 2816         return (0);
 2817 }
 2818 
 2819 static int
 2820 bsd_to_linux_v4l_buffer(struct video_buffer *vb, struct l_video_buffer *lvb)
 2821 {
 2822         lvb->base = PTROUT(vb->base);   /* possible pointer size conversion */
 2823         lvb->height = vb->height;
 2824         lvb->width = vb->width;
 2825         lvb->depth = vb->depth;
 2826         lvb->bytesperline = vb->bytesperline;
 2827         return (0);
 2828 }
 2829 
 2830 static int
 2831 linux_to_bsd_v4l_code(struct l_video_code *lvc, struct video_code *vc)
 2832 {
 2833         strlcpy(vc->loadwhat, lvc->loadwhat, LINUX_VIDEO_CODE_LOADWHAT_SIZE);
 2834         vc->datasize = lvc->datasize;
 2835         vc->data = PTRIN(lvc->data);    /* possible pointer size conversion */
 2836         return (0);
 2837 }
 2838 
 2839 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 2840 static int
 2841 linux_v4l_clip_copy(void *lvc, struct video_clip **ppvc)
 2842 {
 2843         int error;
 2844         struct video_clip vclip;
 2845         struct l_video_clip l_vclip;
 2846 
 2847         error = copyin(lvc, &l_vclip, sizeof(l_vclip));
 2848         if (error) return (error);
 2849         linux_to_bsd_v4l_clip(&l_vclip, &vclip);
 2850         /* XXX: If there can be no concurrency: s/M_NOWAIT/M_WAITOK/ */
 2851         if ((*ppvc = malloc(sizeof(**ppvc), M_LINUX, M_NOWAIT)) == NULL)
 2852                 return (ENOMEM);    /* XXX: linux has no ENOMEM here */
 2853         memcpy(*ppvc, &vclip, sizeof(vclip));
 2854         (*ppvc)->next = NULL;
 2855         return (0);
 2856 }
 2857 
 2858 static int
 2859 linux_v4l_cliplist_free(struct video_window *vw)
 2860 {
 2861         struct video_clip **ppvc;
 2862         struct video_clip **ppvc_next;
 2863 
 2864         for (ppvc = &(vw->clips); *ppvc != NULL; ppvc = ppvc_next) {
 2865                 ppvc_next = &((*ppvc)->next);
 2866                 free(*ppvc, M_LINUX);
 2867         }
 2868         vw->clips = NULL;
 2869 
 2870         return (0);
 2871 }
 2872 
 2873 static int
 2874 linux_v4l_cliplist_copy(struct l_video_window *lvw, struct video_window *vw)
 2875 {
 2876         int error;
 2877         int clipcount;
 2878         void *plvc;
 2879         struct video_clip **ppvc;
 2880 
 2881         /*
 2882          * XXX: The cliplist is used to pass in a list of clipping
 2883          *      rectangles or, if clipcount == VIDEO_CLIP_BITMAP, a
 2884          *      clipping bitmap.  Some Linux apps, however, appear to
 2885          *      leave cliplist and clips uninitialized.  In any case,
 2886          *      the cliplist is not used by pwc(4), at the time of
 2887          *      writing, FreeBSD's only V4L driver.  When a driver
 2888          *      that uses the cliplist is developed, this code may
 2889          *      need re-examiniation.
 2890          */
 2891         error = 0;
 2892         clipcount = vw->clipcount;
 2893         if (clipcount == VIDEO_CLIP_BITMAP) {
 2894                 /*
 2895                  * In this case, the pointer (clips) is overloaded
 2896                  * to be a "void *" to a bitmap, therefore there
 2897                  * is no struct video_clip to copy now.
 2898                  */
 2899         } else if (clipcount > 0 && clipcount <= 16384) {
 2900                 /*
 2901                  * Clips points to list of clip rectangles, so
 2902                  * copy the list.
 2903                  *
 2904                  * XXX: Upper limit of 16384 was used here to try to
 2905                  *      avoid cases when clipcount and clips pointer
 2906                  *      are uninitialized and therefore have high random
 2907                  *      values, as is the case in the Linux Skype
 2908                  *      application.  The value 16384 was chosen as that
 2909                  *      is what is used in the Linux stradis(4) MPEG
 2910                  *      decoder driver, the only place we found an
 2911                  *      example of cliplist use.
 2912                  */
 2913                 plvc = PTRIN(lvw->clips);
 2914                 vw->clips = NULL;
 2915                 ppvc = &(vw->clips);
 2916                 while (clipcount-- > 0) {
 2917                         if (plvc == NULL) {
 2918                                 error = EFAULT;
 2919                                 break;
 2920                         } else {
 2921                                 error = linux_v4l_clip_copy(plvc, ppvc);
 2922                                 if (error) {
 2923                                         linux_v4l_cliplist_free(vw);
 2924                                         break;
 2925                                 }
 2926                         }
 2927                         ppvc = &((*ppvc)->next);
 2928                         plvc = PTRIN(((struct l_video_clip *) plvc)->next);
 2929                 }
 2930         } else {
 2931                 /*
 2932                  * clipcount == 0 or negative (but not VIDEO_CLIP_BITMAP)
 2933                  * Force cliplist to null.
 2934                  */
 2935                 vw->clipcount = 0;
 2936                 vw->clips = NULL;
 2937         }
 2938         return (error);
 2939 }
 2940 #endif
 2941 
 2942 static int
 2943 linux_ioctl_v4l(struct thread *td, struct linux_ioctl_args *args)
 2944 {
 2945         cap_rights_t rights;
 2946         struct file *fp;
 2947         int error;
 2948         struct video_tuner vtun;
 2949         struct video_window vwin;
 2950         struct video_buffer vbuf;
 2951         struct video_code vcode;
 2952         struct l_video_tuner l_vtun;
 2953         struct l_video_window l_vwin;
 2954         struct l_video_buffer l_vbuf;
 2955         struct l_video_code l_vcode;
 2956 
 2957         switch (args->cmd & 0xffff) {
 2958         case LINUX_VIDIOCGCAP:          args->cmd = VIDIOCGCAP; break;
 2959         case LINUX_VIDIOCGCHAN:         args->cmd = VIDIOCGCHAN; break;
 2960         case LINUX_VIDIOCSCHAN:         args->cmd = VIDIOCSCHAN; break;
 2961 
 2962         case LINUX_VIDIOCGTUNER:
 2963                 error = fget(td, args->fd,
 2964                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 2965                 if (error != 0)
 2966                         return (error);
 2967                 error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
 2968                 if (error) {
 2969                         fdrop(fp, td);
 2970                         return (error);
 2971                 }
 2972                 linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
 2973                 error = fo_ioctl(fp, VIDIOCGTUNER, &vtun, td->td_ucred, td);
 2974                 if (!error) {
 2975                         bsd_to_linux_v4l_tuner(&vtun, &l_vtun);
 2976                         error = copyout(&l_vtun, (void *) args->arg,
 2977                             sizeof(l_vtun));
 2978                 }
 2979                 fdrop(fp, td);
 2980                 return (error);
 2981 
 2982         case LINUX_VIDIOCSTUNER:
 2983                 error = fget(td, args->fd,
 2984                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 2985                 if (error != 0)
 2986                         return (error);
 2987                 error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
 2988                 if (error) {
 2989                         fdrop(fp, td);
 2990                         return (error);
 2991                 }
 2992                 linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
 2993                 error = fo_ioctl(fp, VIDIOCSTUNER, &vtun, td->td_ucred, td);
 2994                 fdrop(fp, td);
 2995                 return (error);
 2996 
 2997         case LINUX_VIDIOCGPICT:         args->cmd = VIDIOCGPICT; break;
 2998         case LINUX_VIDIOCSPICT:         args->cmd = VIDIOCSPICT; break;
 2999         case LINUX_VIDIOCCAPTURE:       args->cmd = VIDIOCCAPTURE; break;
 3000 
 3001         case LINUX_VIDIOCGWIN:
 3002                 error = fget(td, args->fd,
 3003                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3004                 if (error != 0)
 3005                         return (error);
 3006                 error = fo_ioctl(fp, VIDIOCGWIN, &vwin, td->td_ucred, td);
 3007                 if (!error) {
 3008                         bsd_to_linux_v4l_window(&vwin, &l_vwin);
 3009                         error = copyout(&l_vwin, (void *) args->arg,
 3010                             sizeof(l_vwin));
 3011                 }
 3012                 fdrop(fp, td);
 3013                 return (error);
 3014 
 3015         case LINUX_VIDIOCSWIN:
 3016                 error = fget(td, args->fd,
 3017                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3018                 if (error != 0)
 3019                         return (error);
 3020                 error = copyin((void *) args->arg, &l_vwin, sizeof(l_vwin));
 3021                 if (error) {
 3022                         fdrop(fp, td);
 3023                         return (error);
 3024                 }
 3025                 linux_to_bsd_v4l_window(&l_vwin, &vwin);
 3026 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 3027                 error = linux_v4l_cliplist_copy(&l_vwin, &vwin);
 3028                 if (error) {
 3029                         fdrop(fp, td);
 3030                         return (error);
 3031                 }
 3032 #endif
 3033                 error = fo_ioctl(fp, VIDIOCSWIN, &vwin, td->td_ucred, td);
 3034                 fdrop(fp, td);
 3035 #ifdef COMPAT_LINUX_V4L_CLIPLIST
 3036                 linux_v4l_cliplist_free(&vwin);
 3037 #endif
 3038                 return (error);
 3039 
 3040         case LINUX_VIDIOCGFBUF:
 3041                 error = fget(td, args->fd,
 3042                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3043                 if (error != 0)
 3044                         return (error);
 3045                 error = fo_ioctl(fp, VIDIOCGFBUF, &vbuf, td->td_ucred, td);
 3046                 if (!error) {
 3047                         bsd_to_linux_v4l_buffer(&vbuf, &l_vbuf);
 3048                         error = copyout(&l_vbuf, (void *) args->arg,
 3049                             sizeof(l_vbuf));
 3050                 }
 3051                 fdrop(fp, td);
 3052                 return (error);
 3053 
 3054         case LINUX_VIDIOCSFBUF:
 3055                 error = fget(td, args->fd,
 3056                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3057                 if (error != 0)
 3058                         return (error);
 3059                 error = copyin((void *) args->arg, &l_vbuf, sizeof(l_vbuf));
 3060                 if (error) {
 3061                         fdrop(fp, td);
 3062                         return (error);
 3063                 }
 3064                 linux_to_bsd_v4l_buffer(&l_vbuf, &vbuf);
 3065                 error = fo_ioctl(fp, VIDIOCSFBUF, &vbuf, td->td_ucred, td);
 3066                 fdrop(fp, td);
 3067                 return (error);
 3068 
 3069         case LINUX_VIDIOCKEY:           args->cmd = VIDIOCKEY; break;
 3070         case LINUX_VIDIOCGFREQ:         args->cmd = VIDIOCGFREQ; break;
 3071         case LINUX_VIDIOCSFREQ:         args->cmd = VIDIOCSFREQ; break;
 3072         case LINUX_VIDIOCGAUDIO:        args->cmd = VIDIOCGAUDIO; break;
 3073         case LINUX_VIDIOCSAUDIO:        args->cmd = VIDIOCSAUDIO; break;
 3074         case LINUX_VIDIOCSYNC:          args->cmd = VIDIOCSYNC; break;
 3075         case LINUX_VIDIOCMCAPTURE:      args->cmd = VIDIOCMCAPTURE; break;
 3076         case LINUX_VIDIOCGMBUF:         args->cmd = VIDIOCGMBUF; break;
 3077         case LINUX_VIDIOCGUNIT:         args->cmd = VIDIOCGUNIT; break;
 3078         case LINUX_VIDIOCGCAPTURE:      args->cmd = VIDIOCGCAPTURE; break;
 3079         case LINUX_VIDIOCSCAPTURE:      args->cmd = VIDIOCSCAPTURE; break;
 3080         case LINUX_VIDIOCSPLAYMODE:     args->cmd = VIDIOCSPLAYMODE; break;
 3081         case LINUX_VIDIOCSWRITEMODE:    args->cmd = VIDIOCSWRITEMODE; break;
 3082         case LINUX_VIDIOCGPLAYINFO:     args->cmd = VIDIOCGPLAYINFO; break;
 3083 
 3084         case LINUX_VIDIOCSMICROCODE:
 3085                 error = fget(td, args->fd,
 3086                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3087                 if (error != 0)
 3088                         return (error);
 3089                 error = copyin((void *) args->arg, &l_vcode, sizeof(l_vcode));
 3090                 if (error) {
 3091                         fdrop(fp, td);
 3092                         return (error);
 3093                 }
 3094                 linux_to_bsd_v4l_code(&l_vcode, &vcode);
 3095                 error = fo_ioctl(fp, VIDIOCSMICROCODE, &vcode, td->td_ucred, td);
 3096                 fdrop(fp, td);
 3097                 return (error);
 3098 
 3099         case LINUX_VIDIOCGVBIFMT:       args->cmd = VIDIOCGVBIFMT; break;
 3100         case LINUX_VIDIOCSVBIFMT:       args->cmd = VIDIOCSVBIFMT; break;
 3101         default:                        return (ENOIOCTL);
 3102         }
 3103 
 3104         error = sys_ioctl(td, (struct ioctl_args *)args);
 3105         return (error);
 3106 }
 3107 
 3108 /*
 3109  * Special ioctl handler
 3110  */
 3111 static int
 3112 linux_ioctl_special(struct thread *td, struct linux_ioctl_args *args)
 3113 {
 3114         int error;
 3115 
 3116         switch (args->cmd) {
 3117         case LINUX_SIOCGIFADDR:
 3118                 args->cmd = SIOCGIFADDR;
 3119                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3120                 break;
 3121         case LINUX_SIOCSIFADDR:
 3122                 args->cmd = SIOCSIFADDR;
 3123                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3124                 break;
 3125         case LINUX_SIOCGIFFLAGS:
 3126                 args->cmd = SIOCGIFFLAGS;
 3127                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3128                 break;
 3129         default:
 3130                 error = ENOIOCTL;
 3131         }
 3132 
 3133         return (error);
 3134 }
 3135 
 3136 static int
 3137 linux_to_bsd_v4l2_standard(struct l_v4l2_standard *lvstd, struct v4l2_standard *vstd)
 3138 {
 3139         vstd->index = lvstd->index;
 3140         vstd->id = lvstd->id;
 3141         memcpy(&vstd->name, &lvstd->name, sizeof(*lvstd) - offsetof(struct l_v4l2_standard, name));
 3142         return (0);
 3143 }
 3144 
 3145 static int
 3146 bsd_to_linux_v4l2_standard(struct v4l2_standard *vstd, struct l_v4l2_standard *lvstd)
 3147 {
 3148         lvstd->index = vstd->index;
 3149         lvstd->id = vstd->id;
 3150         memcpy(&lvstd->name, &vstd->name, sizeof(*lvstd) - offsetof(struct l_v4l2_standard, name));
 3151         return (0);
 3152 }
 3153 
 3154 static int
 3155 linux_to_bsd_v4l2_buffer(struct l_v4l2_buffer *lvb, struct v4l2_buffer *vb)
 3156 {
 3157         vb->index = lvb->index;
 3158         vb->type = lvb->type;
 3159         vb->bytesused = lvb->bytesused;
 3160         vb->flags = lvb->flags;
 3161         vb->field = lvb->field;
 3162         vb->timestamp.tv_sec = lvb->timestamp.tv_sec;
 3163         vb->timestamp.tv_usec = lvb->timestamp.tv_usec;
 3164         memcpy(&vb->timecode, &lvb->timecode, sizeof (lvb->timecode));
 3165         vb->sequence = lvb->sequence;
 3166         vb->memory = lvb->memory;
 3167         if (lvb->memory == V4L2_MEMORY_USERPTR)
 3168                 /* possible pointer size conversion */
 3169                 vb->m.userptr = (unsigned long)PTRIN(lvb->m.userptr);
 3170         else
 3171                 vb->m.offset = lvb->m.offset;
 3172         vb->length = lvb->length;
 3173         vb->input = lvb->input;
 3174         vb->reserved = lvb->reserved;
 3175         return (0);
 3176 }
 3177 
 3178 static int
 3179 bsd_to_linux_v4l2_buffer(struct v4l2_buffer *vb, struct l_v4l2_buffer *lvb)
 3180 {
 3181         lvb->index = vb->index;
 3182         lvb->type = vb->type;
 3183         lvb->bytesused = vb->bytesused;
 3184         lvb->flags = vb->flags;
 3185         lvb->field = vb->field;
 3186         lvb->timestamp.tv_sec = vb->timestamp.tv_sec;
 3187         lvb->timestamp.tv_usec = vb->timestamp.tv_usec;
 3188         memcpy(&lvb->timecode, &vb->timecode, sizeof (vb->timecode));
 3189         lvb->sequence = vb->sequence;
 3190         lvb->memory = vb->memory;
 3191         if (vb->memory == V4L2_MEMORY_USERPTR)
 3192                 /* possible pointer size conversion */
 3193                 lvb->m.userptr = PTROUT(vb->m.userptr);
 3194         else
 3195                 lvb->m.offset = vb->m.offset;
 3196         lvb->length = vb->length;
 3197         lvb->input = vb->input;
 3198         lvb->reserved = vb->reserved;
 3199         return (0);
 3200 }
 3201 
 3202 static int
 3203 linux_to_bsd_v4l2_format(struct l_v4l2_format *lvf, struct v4l2_format *vf)
 3204 {
 3205         vf->type = lvf->type;
 3206         if (lvf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
 3207 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3208             || lvf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3209 #endif
 3210             )
 3211                 /*
 3212                  * XXX TODO - needs 32 -> 64 bit conversion:
 3213                  * (unused by webcams?)
 3214                  */
 3215                 return EINVAL;
 3216         memcpy(&vf->fmt, &lvf->fmt, sizeof(vf->fmt));
 3217         return 0;
 3218 }
 3219 
 3220 static int
 3221 bsd_to_linux_v4l2_format(struct v4l2_format *vf, struct l_v4l2_format *lvf)
 3222 {
 3223         lvf->type = vf->type;
 3224         if (vf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
 3225 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3226             || vf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
 3227 #endif
 3228             )
 3229                 /*
 3230                  * XXX TODO - needs 32 -> 64 bit conversion:
 3231                  * (unused by webcams?)
 3232                  */
 3233                 return EINVAL;
 3234         memcpy(&lvf->fmt, &vf->fmt, sizeof(vf->fmt));
 3235         return 0;
 3236 }
 3237 static int
 3238 linux_ioctl_v4l2(struct thread *td, struct linux_ioctl_args *args)
 3239 {
 3240         cap_rights_t rights;
 3241         struct file *fp;
 3242         int error;
 3243         struct v4l2_format vformat;
 3244         struct l_v4l2_format l_vformat;
 3245         struct v4l2_standard vstd;
 3246         struct l_v4l2_standard l_vstd;
 3247         struct l_v4l2_buffer l_vbuf;
 3248         struct v4l2_buffer vbuf;
 3249         struct v4l2_input vinp;
 3250 
 3251         switch (args->cmd & 0xffff) {
 3252         case LINUX_VIDIOC_RESERVED:
 3253         case LINUX_VIDIOC_LOG_STATUS:
 3254                 if ((args->cmd & IOC_DIRMASK) != LINUX_IOC_VOID)
 3255                         return ENOIOCTL;
 3256                 args->cmd = (args->cmd & 0xffff) | IOC_VOID;
 3257                 break;
 3258 
 3259         case LINUX_VIDIOC_OVERLAY:
 3260         case LINUX_VIDIOC_STREAMON:
 3261         case LINUX_VIDIOC_STREAMOFF:
 3262         case LINUX_VIDIOC_S_STD:
 3263         case LINUX_VIDIOC_S_TUNER:
 3264         case LINUX_VIDIOC_S_AUDIO:
 3265         case LINUX_VIDIOC_S_AUDOUT:
 3266         case LINUX_VIDIOC_S_MODULATOR:
 3267         case LINUX_VIDIOC_S_FREQUENCY:
 3268         case LINUX_VIDIOC_S_CROP:
 3269         case LINUX_VIDIOC_S_JPEGCOMP:
 3270         case LINUX_VIDIOC_S_PRIORITY:
 3271         case LINUX_VIDIOC_DBG_S_REGISTER:
 3272         case LINUX_VIDIOC_S_HW_FREQ_SEEK:
 3273         case LINUX_VIDIOC_SUBSCRIBE_EVENT:
 3274         case LINUX_VIDIOC_UNSUBSCRIBE_EVENT:
 3275                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_IN;
 3276                 break;
 3277 
 3278         case LINUX_VIDIOC_QUERYCAP:
 3279         case LINUX_VIDIOC_G_STD:
 3280         case LINUX_VIDIOC_G_AUDIO:
 3281         case LINUX_VIDIOC_G_INPUT:
 3282         case LINUX_VIDIOC_G_OUTPUT:
 3283         case LINUX_VIDIOC_G_AUDOUT:
 3284         case LINUX_VIDIOC_G_JPEGCOMP:
 3285         case LINUX_VIDIOC_QUERYSTD:
 3286         case LINUX_VIDIOC_G_PRIORITY:
 3287         case LINUX_VIDIOC_QUERY_DV_PRESET:
 3288                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_OUT;
 3289                 break;
 3290 
 3291         case LINUX_VIDIOC_ENUM_FMT:
 3292         case LINUX_VIDIOC_REQBUFS:
 3293         case LINUX_VIDIOC_G_PARM:
 3294         case LINUX_VIDIOC_S_PARM:
 3295         case LINUX_VIDIOC_G_CTRL:
 3296         case LINUX_VIDIOC_S_CTRL:
 3297         case LINUX_VIDIOC_G_TUNER:
 3298         case LINUX_VIDIOC_QUERYCTRL:
 3299         case LINUX_VIDIOC_QUERYMENU:
 3300         case LINUX_VIDIOC_S_INPUT:
 3301         case LINUX_VIDIOC_S_OUTPUT:
 3302         case LINUX_VIDIOC_ENUMOUTPUT:
 3303         case LINUX_VIDIOC_G_MODULATOR:
 3304         case LINUX_VIDIOC_G_FREQUENCY:
 3305         case LINUX_VIDIOC_CROPCAP:
 3306         case LINUX_VIDIOC_G_CROP:
 3307         case LINUX_VIDIOC_ENUMAUDIO:
 3308         case LINUX_VIDIOC_ENUMAUDOUT:
 3309         case LINUX_VIDIOC_G_SLICED_VBI_CAP:
 3310 #ifdef VIDIOC_ENUM_FRAMESIZES
 3311         case LINUX_VIDIOC_ENUM_FRAMESIZES:
 3312         case LINUX_VIDIOC_ENUM_FRAMEINTERVALS:
 3313         case LINUX_VIDIOC_ENCODER_CMD:
 3314         case LINUX_VIDIOC_TRY_ENCODER_CMD:
 3315 #endif
 3316         case LINUX_VIDIOC_DBG_G_REGISTER:
 3317         case LINUX_VIDIOC_DBG_G_CHIP_IDENT:
 3318         case LINUX_VIDIOC_ENUM_DV_PRESETS:
 3319         case LINUX_VIDIOC_S_DV_PRESET:
 3320         case LINUX_VIDIOC_G_DV_PRESET:
 3321         case LINUX_VIDIOC_S_DV_TIMINGS:
 3322         case LINUX_VIDIOC_G_DV_TIMINGS:
 3323                 args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
 3324                 break;
 3325 
 3326         case LINUX_VIDIOC_G_FMT:
 3327         case LINUX_VIDIOC_S_FMT:
 3328         case LINUX_VIDIOC_TRY_FMT:
 3329                 error = copyin((void *)args->arg, &l_vformat, sizeof(l_vformat));
 3330                 if (error)
 3331                         return (error);
 3332                 error = fget(td, args->fd,
 3333                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3334                 if (error)
 3335                         return (error);
 3336                 if (linux_to_bsd_v4l2_format(&l_vformat, &vformat) != 0)
 3337                         error = EINVAL;
 3338                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_G_FMT)
 3339                         error = fo_ioctl(fp, VIDIOC_G_FMT, &vformat,
 3340                             td->td_ucred, td);
 3341                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_S_FMT)
 3342                         error = fo_ioctl(fp, VIDIOC_S_FMT, &vformat,
 3343                             td->td_ucred, td);
 3344                 else
 3345                         error = fo_ioctl(fp, VIDIOC_TRY_FMT, &vformat,
 3346                             td->td_ucred, td);
 3347                 bsd_to_linux_v4l2_format(&vformat, &l_vformat);
 3348                 copyout(&l_vformat, (void *)args->arg, sizeof(l_vformat));
 3349                 fdrop(fp, td);
 3350                 return (error);
 3351 
 3352         case LINUX_VIDIOC_ENUMSTD:
 3353                 error = copyin((void *)args->arg, &l_vstd, sizeof(l_vstd));
 3354                 if (error)
 3355                         return (error);
 3356                 linux_to_bsd_v4l2_standard(&l_vstd, &vstd);
 3357                 error = fget(td, args->fd,
 3358                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3359                 if (error)
 3360                         return (error);
 3361                 error = fo_ioctl(fp, VIDIOC_ENUMSTD, (caddr_t)&vstd,
 3362                     td->td_ucred, td);
 3363                 if (error) {
 3364                         fdrop(fp, td);
 3365                         return (error);
 3366                 }
 3367                 bsd_to_linux_v4l2_standard(&vstd, &l_vstd);
 3368                 error = copyout(&l_vstd, (void *)args->arg, sizeof(l_vstd));
 3369                 fdrop(fp, td);
 3370                 return (error);
 3371 
 3372         case LINUX_VIDIOC_ENUMINPUT:
 3373                 /*
 3374                  * The Linux struct l_v4l2_input differs only in size,
 3375                  * it has no padding at the end.
 3376                  */
 3377                 error = copyin((void *)args->arg, &vinp,
 3378                                 sizeof(struct l_v4l2_input));
 3379                 if (error != 0)
 3380                         return (error);
 3381                 error = fget(td, args->fd,
 3382                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3383                 if (error != 0)
 3384                         return (error);
 3385                 error = fo_ioctl(fp, VIDIOC_ENUMINPUT, (caddr_t)&vinp,
 3386                     td->td_ucred, td);
 3387                 if (error) {
 3388                         fdrop(fp, td);
 3389                         return (error);
 3390                 }
 3391                 error = copyout(&vinp, (void *)args->arg,
 3392                                 sizeof(struct l_v4l2_input));
 3393                 fdrop(fp, td);
 3394                 return (error);
 3395 
 3396         case LINUX_VIDIOC_QUERYBUF:
 3397         case LINUX_VIDIOC_QBUF:
 3398         case LINUX_VIDIOC_DQBUF:
 3399                 error = copyin((void *)args->arg, &l_vbuf, sizeof(l_vbuf));
 3400                 if (error)
 3401                         return (error);
 3402                 error = fget(td, args->fd,
 3403                     cap_rights_init(&rights, CAP_IOCTL), &fp);
 3404                 if (error)
 3405                         return (error);
 3406                 linux_to_bsd_v4l2_buffer(&l_vbuf, &vbuf);
 3407                 if ((args->cmd & 0xffff) == LINUX_VIDIOC_QUERYBUF)
 3408                         error = fo_ioctl(fp, VIDIOC_QUERYBUF, &vbuf,
 3409                             td->td_ucred, td);
 3410                 else if ((args->cmd & 0xffff) == LINUX_VIDIOC_QBUF)
 3411                         error = fo_ioctl(fp, VIDIOC_QBUF, &vbuf,
 3412                             td->td_ucred, td);
 3413                 else
 3414                         error = fo_ioctl(fp, VIDIOC_DQBUF, &vbuf,
 3415                             td->td_ucred, td);
 3416                 bsd_to_linux_v4l2_buffer(&vbuf, &l_vbuf);
 3417                 copyout(&l_vbuf, (void *)args->arg, sizeof(l_vbuf));
 3418                 fdrop(fp, td);
 3419                 return (error);
 3420 
 3421         /*
 3422          * XXX TODO - these need 32 -> 64 bit conversion:
 3423          * (are any of them needed for webcams?)
 3424          */
 3425         case LINUX_VIDIOC_G_FBUF:
 3426         case LINUX_VIDIOC_S_FBUF:
 3427 
 3428         case LINUX_VIDIOC_G_EXT_CTRLS:
 3429         case LINUX_VIDIOC_S_EXT_CTRLS:
 3430         case LINUX_VIDIOC_TRY_EXT_CTRLS:
 3431 
 3432         case LINUX_VIDIOC_DQEVENT:
 3433 
 3434         default:                        return (ENOIOCTL);
 3435         }
 3436 
 3437         error = sys_ioctl(td, (struct ioctl_args *)args);
 3438         return (error);
 3439 }
 3440 
 3441 /*
 3442  * Support for emulators/linux-libusb. This port uses FBSD_LUSB* macros
 3443  * instead of USB* ones. This lets us to provide correct values for cmd.
 3444  * 0xffffffe0 -- 0xffffffff range seemed to be the least collision-prone.
 3445  */
 3446 static int
 3447 linux_ioctl_fbsd_usb(struct thread *td, struct linux_ioctl_args *args)
 3448 {
 3449         int error;
 3450 
 3451         error = 0;
 3452         switch (args->cmd) {
 3453         case FBSD_LUSB_DEVICEENUMERATE:
 3454                 args->cmd = USB_DEVICEENUMERATE;
 3455                 break;
 3456         case FBSD_LUSB_DEV_QUIRK_ADD:
 3457                 args->cmd = USB_DEV_QUIRK_ADD;
 3458                 break;
 3459         case FBSD_LUSB_DEV_QUIRK_GET:
 3460                 args->cmd = USB_DEV_QUIRK_GET;
 3461                 break;
 3462         case FBSD_LUSB_DEV_QUIRK_REMOVE:
 3463                 args->cmd = USB_DEV_QUIRK_REMOVE;
 3464                 break;
 3465         case FBSD_LUSB_DO_REQUEST:
 3466                 args->cmd = USB_DO_REQUEST;
 3467                 break;
 3468         case FBSD_LUSB_FS_CLEAR_STALL_SYNC:
 3469                 args->cmd = USB_FS_CLEAR_STALL_SYNC;
 3470                 break;
 3471         case FBSD_LUSB_FS_CLOSE:
 3472                 args->cmd = USB_FS_CLOSE;
 3473                 break;
 3474         case FBSD_LUSB_FS_COMPLETE:
 3475                 args->cmd = USB_FS_COMPLETE;
 3476                 break;
 3477         case FBSD_LUSB_FS_INIT:
 3478                 args->cmd = USB_FS_INIT;
 3479                 break;
 3480         case FBSD_LUSB_FS_OPEN:
 3481                 args->cmd = USB_FS_OPEN;
 3482                 break;
 3483         case FBSD_LUSB_FS_START:
 3484                 args->cmd = USB_FS_START;
 3485                 break;
 3486         case FBSD_LUSB_FS_STOP:
 3487                 args->cmd = USB_FS_STOP;
 3488                 break;
 3489         case FBSD_LUSB_FS_UNINIT:
 3490                 args->cmd = USB_FS_UNINIT;
 3491                 break;
 3492         case FBSD_LUSB_GET_CONFIG:
 3493                 args->cmd = USB_GET_CONFIG;
 3494                 break;
 3495         case FBSD_LUSB_GET_DEVICEINFO:
 3496                 args->cmd = USB_GET_DEVICEINFO;
 3497                 break;
 3498         case FBSD_LUSB_GET_DEVICE_DESC:
 3499                 args->cmd = USB_GET_DEVICE_DESC;
 3500                 break;
 3501         case FBSD_LUSB_GET_FULL_DESC:
 3502                 args->cmd = USB_GET_FULL_DESC;
 3503                 break;
 3504         case FBSD_LUSB_GET_IFACE_DRIVER:
 3505                 args->cmd = USB_GET_IFACE_DRIVER;
 3506                 break;
 3507         case FBSD_LUSB_GET_PLUGTIME:
 3508                 args->cmd = USB_GET_PLUGTIME;
 3509                 break;
 3510         case FBSD_LUSB_GET_POWER_MODE:
 3511                 args->cmd = USB_GET_POWER_MODE;
 3512                 break;
 3513         case FBSD_LUSB_GET_REPORT_DESC:
 3514                 args->cmd = USB_GET_REPORT_DESC;
 3515                 break;
 3516         case FBSD_LUSB_GET_REPORT_ID:
 3517                 args->cmd = USB_GET_REPORT_ID;
 3518                 break;
 3519         case FBSD_LUSB_GET_TEMPLATE:
 3520                 args->cmd = USB_GET_TEMPLATE;
 3521                 break;
 3522         case FBSD_LUSB_IFACE_DRIVER_ACTIVE:
 3523                 args->cmd = USB_IFACE_DRIVER_ACTIVE;
 3524                 break;
 3525         case FBSD_LUSB_IFACE_DRIVER_DETACH:
 3526                 args->cmd = USB_IFACE_DRIVER_DETACH;
 3527                 break;
 3528         case FBSD_LUSB_QUIRK_NAME_GET:
 3529                 args->cmd = USB_QUIRK_NAME_GET;
 3530                 break;
 3531         case FBSD_LUSB_READ_DIR:
 3532                 args->cmd = USB_READ_DIR;
 3533                 break;
 3534         case FBSD_LUSB_SET_ALTINTERFACE:
 3535                 args->cmd = USB_SET_ALTINTERFACE;
 3536                 break;
 3537         case FBSD_LUSB_SET_CONFIG:
 3538                 args->cmd = USB_SET_CONFIG;
 3539                 break;
 3540         case FBSD_LUSB_SET_IMMED:
 3541                 args->cmd = USB_SET_IMMED;
 3542                 break;
 3543         case FBSD_LUSB_SET_POWER_MODE:
 3544                 args->cmd = USB_SET_POWER_MODE;
 3545                 break;
 3546         case FBSD_LUSB_SET_TEMPLATE:
 3547                 args->cmd = USB_SET_TEMPLATE;
 3548                 break;
 3549         case FBSD_LUSB_FS_OPEN_STREAM:
 3550                 args->cmd = USB_FS_OPEN_STREAM;
 3551                 break;
 3552         case FBSD_LUSB_GET_DEV_PORT_PATH:
 3553                 args->cmd = USB_GET_DEV_PORT_PATH;
 3554                 break;
 3555         case FBSD_LUSB_GET_POWER_USAGE:
 3556                 args->cmd = USB_GET_POWER_USAGE;
 3557                 break;
 3558         default:
 3559                 error = ENOIOCTL;
 3560         }
 3561         if (error != ENOIOCTL)
 3562                 error = sys_ioctl(td, (struct ioctl_args *)args);
 3563         return (error);
 3564 }
 3565 
 3566 /*
 3567  * main ioctl syscall function
 3568  */
 3569 
 3570 int
 3571 linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
 3572 {
 3573         cap_rights_t rights;
 3574         struct file *fp;
 3575         struct handler_element *he;
 3576         int error, cmd;
 3577 
 3578 #ifdef DEBUG
 3579         if (ldebug(ioctl))
 3580                 printf(ARGS(ioctl, "%d, %04lx, *"), args->fd,
 3581                     (unsigned long)args->cmd);
 3582 #endif
 3583 
 3584         error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
 3585         if (error != 0)
 3586                 return (error);
 3587         if ((fp->f_flag & (FREAD|FWRITE)) == 0) {
 3588                 fdrop(fp, td);
 3589                 return (EBADF);
 3590         }
 3591 
 3592         /* Iterate over the ioctl handlers */
 3593         cmd = args->cmd & 0xffff;
 3594         sx_slock(&linux_ioctl_sx);
 3595         mtx_lock(&Giant);
 3596         TAILQ_FOREACH(he, &handlers, list) {
 3597                 if (cmd >= he->low && cmd <= he->high) {
 3598                         error = (*he->func)(td, args);
 3599                         if (error != ENOIOCTL) {
 3600                                 mtx_unlock(&Giant);
 3601                                 sx_sunlock(&linux_ioctl_sx);
 3602                                 fdrop(fp, td);
 3603                                 return (error);
 3604                         }
 3605                 }
 3606         }
 3607         mtx_unlock(&Giant);
 3608         sx_sunlock(&linux_ioctl_sx);
 3609         fdrop(fp, td);
 3610 
 3611         switch (args->cmd & 0xffff) {
 3612         case LINUX_BTRFS_IOC_CLONE:
 3613                 return (ENOTSUP);
 3614 
 3615         default:
 3616                 linux_msg(td, "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
 3617                     args->fd, (int)(args->cmd & 0xffff),
 3618                     (int)(args->cmd & 0xff00) >> 8, (int)(args->cmd & 0xff));
 3619                 break;
 3620         }
 3621 
 3622         return (EINVAL);
 3623 }
 3624 
 3625 int
 3626 linux_ioctl_register_handler(struct linux_ioctl_handler *h)
 3627 {
 3628         struct handler_element *he, *cur;
 3629 
 3630         if (h == NULL || h->func == NULL)
 3631                 return (EINVAL);
 3632 
 3633         /*
 3634          * Reuse the element if the handler is already on the list, otherwise
 3635          * create a new element.
 3636          */
 3637         sx_xlock(&linux_ioctl_sx);
 3638         TAILQ_FOREACH(he, &handlers, list) {
 3639                 if (he->func == h->func)
 3640                         break;
 3641         }
 3642         if (he == NULL) {
 3643                 he = malloc(sizeof(*he),
 3644                     M_LINUX, M_WAITOK);
 3645                 he->func = h->func;
 3646         } else
 3647                 TAILQ_REMOVE(&handlers, he, list);
 3648 
 3649         /* Initialize range information. */
 3650         he->low = h->low;
 3651         he->high = h->high;
 3652         he->span = h->high - h->low + 1;
 3653 
 3654         /* Add the element to the list, sorted on span. */
 3655         TAILQ_FOREACH(cur, &handlers, list) {
 3656                 if (cur->span > he->span) {
 3657                         TAILQ_INSERT_BEFORE(cur, he, list);
 3658                         sx_xunlock(&linux_ioctl_sx);
 3659                         return (0);
 3660                 }
 3661         }
 3662         TAILQ_INSERT_TAIL(&handlers, he, list);
 3663         sx_xunlock(&linux_ioctl_sx);
 3664 
 3665         return (0);
 3666 }
 3667 
 3668 int
 3669 linux_ioctl_unregister_handler(struct linux_ioctl_handler *h)
 3670 {
 3671         struct handler_element *he;
 3672 
 3673         if (h == NULL || h->func == NULL)
 3674                 return (EINVAL);
 3675 
 3676         sx_xlock(&linux_ioctl_sx);
 3677         TAILQ_FOREACH(he, &handlers, list) {
 3678                 if (he->func == h->func) {
 3679                         TAILQ_REMOVE(&handlers, he, list);
 3680                         sx_xunlock(&linux_ioctl_sx);
 3681                         free(he, M_LINUX);
 3682                         return (0);
 3683                 }
 3684         }
 3685         sx_xunlock(&linux_ioctl_sx);
 3686 
 3687         return (EINVAL);
 3688 }

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