linux/fs/compat_ioctl.c
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   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * ioctl32.c: Conversion between 32bit and 64bit native ioctls.
   4 *
   5 * Copyright (C) 1997-2000  Jakub Jelinek  (jakub@redhat.com)
   6 * Copyright (C) 1998  Eddie C. Dost  (ecd@skynet.be)
   7 * Copyright (C) 2001,2002  Andi Kleen, SuSE Labs 
   8 * Copyright (C) 2003       Pavel Machek (pavel@ucw.cz)
   9 *
  10 * These routines maintain argument size conversion between 32bit and 64bit
  11 * ioctls.
  12 */
  13
  14#include <linux/joystick.h>
  15
  16#include <linux/types.h>
  17#include <linux/compat.h>
  18#include <linux/kernel.h>
  19#include <linux/capability.h>
  20#include <linux/compiler.h>
  21#include <linux/sched.h>
  22#include <linux/smp.h>
  23#include <linux/ioctl.h>
  24#include <linux/if.h>
  25#include <linux/if_bridge.h>
  26#include <linux/raid/md_u.h>
  27#include <linux/kd.h>
  28#include <linux/route.h>
  29#include <linux/in6.h>
  30#include <linux/ipv6_route.h>
  31#include <linux/skbuff.h>
  32#include <linux/netlink.h>
  33#include <linux/vt.h>
  34#include <linux/falloc.h>
  35#include <linux/fs.h>
  36#include <linux/file.h>
  37#include <linux/ppp_defs.h>
  38#include <linux/ppp-ioctl.h>
  39#include <linux/if_pppox.h>
  40#include <linux/mtio.h>
  41#include <linux/tty.h>
  42#include <linux/vt_kern.h>
  43#include <linux/fb.h>
  44#include <linux/videodev2.h>
  45#include <linux/netdevice.h>
  46#include <linux/raw.h>
  47#include <linux/blkdev.h>
  48#include <linux/elevator.h>
  49#include <linux/pci.h>
  50#include <linux/serial.h>
  51#include <linux/if_tun.h>
  52#include <linux/ctype.h>
  53#include <linux/syscalls.h>
  54#include <linux/atalk.h>
  55#include <linux/gfp.h>
  56#include <linux/cec.h>
  57
  58#include "internal.h"
  59
  60#include <linux/capi.h>
  61#include <linux/gigaset_dev.h>
  62
  63#ifdef CONFIG_BLOCK
  64#include <linux/cdrom.h>
  65#include <linux/fd.h>
  66#include <scsi/scsi.h>
  67#include <scsi/scsi_ioctl.h>
  68#include <scsi/sg.h>
  69#endif
  70
  71#include <linux/uaccess.h>
  72#include <linux/ethtool.h>
  73#include <linux/mii.h>
  74#include <linux/if_bonding.h>
  75#include <linux/watchdog.h>
  76
  77#include <linux/soundcard.h>
  78#include <linux/lp.h>
  79#include <linux/ppdev.h>
  80
  81#include <linux/atm.h>
  82#include <linux/atmarp.h>
  83#include <linux/atmclip.h>
  84#include <linux/atmdev.h>
  85#include <linux/atmioc.h>
  86#include <linux/atmlec.h>
  87#include <linux/atmmpc.h>
  88#include <linux/atmsvc.h>
  89#include <linux/atm_tcp.h>
  90#include <linux/sonet.h>
  91#include <linux/atm_suni.h>
  92
  93#include <linux/usb.h>
  94#include <linux/usbdevice_fs.h>
  95#include <linux/nbd.h>
  96#include <linux/random.h>
  97#include <linux/filter.h>
  98
  99#include <linux/hiddev.h>
 100
 101#define __DVB_CORE__
 102#include <linux/dvb/audio.h>
 103#include <linux/dvb/dmx.h>
 104#include <linux/dvb/frontend.h>
 105#include <linux/dvb/video.h>
 106
 107#include <linux/sort.h>
 108
 109#ifdef CONFIG_SPARC
 110#include <asm/fbio.h>
 111#endif
 112
 113#define convert_in_user(srcptr, dstptr)                 \
 114({                                                      \
 115        typeof(*srcptr) val;                            \
 116                                                        \
 117        get_user(val, srcptr) || put_user(val, dstptr); \
 118})
 119
 120static int do_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 121{
 122        int err;
 123
 124        err = security_file_ioctl(file, cmd, arg);
 125        if (err)
 126                return err;
 127
 128        return vfs_ioctl(file, cmd, arg);
 129}
 130
 131struct compat_video_event {
 132        int32_t         type;
 133        compat_time_t   timestamp;
 134        union {
 135                video_size_t size;
 136                unsigned int frame_rate;
 137        } u;
 138};
 139
 140static int do_video_get_event(struct file *file,
 141                unsigned int cmd, struct compat_video_event __user *up)
 142{
 143        struct video_event __user *kevent =
 144                compat_alloc_user_space(sizeof(*kevent));
 145        int err;
 146
 147        if (kevent == NULL)
 148                return -EFAULT;
 149
 150        err = do_ioctl(file, cmd, (unsigned long)kevent);
 151        if (!err) {
 152                err  = convert_in_user(&kevent->type, &up->type);
 153                err |= convert_in_user(&kevent->timestamp, &up->timestamp);
 154                err |= convert_in_user(&kevent->u.size.w, &up->u.size.w);
 155                err |= convert_in_user(&kevent->u.size.h, &up->u.size.h);
 156                err |= convert_in_user(&kevent->u.size.aspect_ratio,
 157                                &up->u.size.aspect_ratio);
 158                if (err)
 159                        err = -EFAULT;
 160        }
 161
 162        return err;
 163}
 164
 165struct compat_video_still_picture {
 166        compat_uptr_t iFrame;
 167        int32_t size;
 168};
 169
 170static int do_video_stillpicture(struct file *file,
 171                unsigned int cmd, struct compat_video_still_picture __user *up)
 172{
 173        struct video_still_picture __user *up_native;
 174        compat_uptr_t fp;
 175        int32_t size;
 176        int err;
 177
 178        err  = get_user(fp, &up->iFrame);
 179        err |= get_user(size, &up->size);
 180        if (err)
 181                return -EFAULT;
 182
 183        up_native =
 184                compat_alloc_user_space(sizeof(struct video_still_picture));
 185
 186        err =  put_user(compat_ptr(fp), &up_native->iFrame);
 187        err |= put_user(size, &up_native->size);
 188        if (err)
 189                return -EFAULT;
 190
 191        err = do_ioctl(file, cmd, (unsigned long) up_native);
 192
 193        return err;
 194}
 195
 196struct compat_video_spu_palette {
 197        int length;
 198        compat_uptr_t palette;
 199};
 200
 201static int do_video_set_spu_palette(struct file *file,
 202                unsigned int cmd, struct compat_video_spu_palette __user *up)
 203{
 204        struct video_spu_palette __user *up_native;
 205        compat_uptr_t palp;
 206        int length, err;
 207
 208        err  = get_user(palp, &up->palette);
 209        err |= get_user(length, &up->length);
 210        if (err)
 211                return -EFAULT;
 212
 213        up_native = compat_alloc_user_space(sizeof(struct video_spu_palette));
 214        err  = put_user(compat_ptr(palp), &up_native->palette);
 215        err |= put_user(length, &up_native->length);
 216        if (err)
 217                return -EFAULT;
 218
 219        err = do_ioctl(file, cmd, (unsigned long) up_native);
 220
 221        return err;
 222}
 223
 224#ifdef CONFIG_BLOCK
 225typedef struct sg_io_hdr32 {
 226        compat_int_t interface_id;      /* [i] 'S' for SCSI generic (required) */
 227        compat_int_t dxfer_direction;   /* [i] data transfer direction  */
 228        unsigned char cmd_len;          /* [i] SCSI command length ( <= 16 bytes) */
 229        unsigned char mx_sb_len;                /* [i] max length to write to sbp */
 230        unsigned short iovec_count;     /* [i] 0 implies no scatter gather */
 231        compat_uint_t dxfer_len;                /* [i] byte count of data transfer */
 232        compat_uint_t dxferp;           /* [i], [*io] points to data transfer memory
 233                                              or scatter gather list */
 234        compat_uptr_t cmdp;             /* [i], [*i] points to command to perform */
 235        compat_uptr_t sbp;              /* [i], [*o] points to sense_buffer memory */
 236        compat_uint_t timeout;          /* [i] MAX_UINT->no timeout (unit: millisec) */
 237        compat_uint_t flags;            /* [i] 0 -> default, see SG_FLAG... */
 238        compat_int_t pack_id;           /* [i->o] unused internally (normally) */
 239        compat_uptr_t usr_ptr;          /* [i->o] unused internally */
 240        unsigned char status;           /* [o] scsi status */
 241        unsigned char masked_status;    /* [o] shifted, masked scsi status */
 242        unsigned char msg_status;               /* [o] messaging level data (optional) */
 243        unsigned char sb_len_wr;                /* [o] byte count actually written to sbp */
 244        unsigned short host_status;     /* [o] errors from host adapter */
 245        unsigned short driver_status;   /* [o] errors from software driver */
 246        compat_int_t resid;             /* [o] dxfer_len - actual_transferred */
 247        compat_uint_t duration;         /* [o] time taken by cmd (unit: millisec) */
 248        compat_uint_t info;             /* [o] auxiliary information */
 249} sg_io_hdr32_t;  /* 64 bytes long (on sparc32) */
 250
 251typedef struct sg_iovec32 {
 252        compat_uint_t iov_base;
 253        compat_uint_t iov_len;
 254} sg_iovec32_t;
 255
 256static int sg_build_iovec(sg_io_hdr_t __user *sgio, void __user *dxferp, u16 iovec_count)
 257{
 258        sg_iovec_t __user *iov = (sg_iovec_t __user *) (sgio + 1);
 259        sg_iovec32_t __user *iov32 = dxferp;
 260        int i;
 261
 262        for (i = 0; i < iovec_count; i++) {
 263                u32 base, len;
 264
 265                if (get_user(base, &iov32[i].iov_base) ||
 266                    get_user(len, &iov32[i].iov_len) ||
 267                    put_user(compat_ptr(base), &iov[i].iov_base) ||
 268                    put_user(len, &iov[i].iov_len))
 269                        return -EFAULT;
 270        }
 271
 272        if (put_user(iov, &sgio->dxferp))
 273                return -EFAULT;
 274        return 0;
 275}
 276
 277static int sg_ioctl_trans(struct file *file, unsigned int cmd,
 278                        sg_io_hdr32_t __user *sgio32)
 279{
 280        sg_io_hdr_t __user *sgio;
 281        u16 iovec_count;
 282        u32 data;
 283        void __user *dxferp;
 284        int err;
 285        int interface_id;
 286
 287        if (get_user(interface_id, &sgio32->interface_id))
 288                return -EFAULT;
 289        if (interface_id != 'S')
 290                return do_ioctl(file, cmd, (unsigned long)sgio32);
 291
 292        if (get_user(iovec_count, &sgio32->iovec_count))
 293                return -EFAULT;
 294
 295        {
 296                void __user *top = compat_alloc_user_space(0);
 297                void __user *new = compat_alloc_user_space(sizeof(sg_io_hdr_t) +
 298                                       (iovec_count * sizeof(sg_iovec_t)));
 299                if (new > top)
 300                        return -EINVAL;
 301
 302                sgio = new;
 303        }
 304
 305        /* Ok, now construct.  */
 306        if (copy_in_user(&sgio->interface_id, &sgio32->interface_id,
 307                         (2 * sizeof(int)) +
 308                         (2 * sizeof(unsigned char)) +
 309                         (1 * sizeof(unsigned short)) +
 310                         (1 * sizeof(unsigned int))))
 311                return -EFAULT;
 312
 313        if (get_user(data, &sgio32->dxferp))
 314                return -EFAULT;
 315        dxferp = compat_ptr(data);
 316        if (iovec_count) {
 317                if (sg_build_iovec(sgio, dxferp, iovec_count))
 318                        return -EFAULT;
 319        } else {
 320                if (put_user(dxferp, &sgio->dxferp))
 321                        return -EFAULT;
 322        }
 323
 324        {
 325                unsigned char __user *cmdp;
 326                unsigned char __user *sbp;
 327
 328                if (get_user(data, &sgio32->cmdp))
 329                        return -EFAULT;
 330                cmdp = compat_ptr(data);
 331
 332                if (get_user(data, &sgio32->sbp))
 333                        return -EFAULT;
 334                sbp = compat_ptr(data);
 335
 336                if (put_user(cmdp, &sgio->cmdp) ||
 337                    put_user(sbp, &sgio->sbp))
 338                        return -EFAULT;
 339        }
 340
 341        if (copy_in_user(&sgio->timeout, &sgio32->timeout,
 342                         3 * sizeof(int)))
 343                return -EFAULT;
 344
 345        if (get_user(data, &sgio32->usr_ptr))
 346                return -EFAULT;
 347        if (put_user(compat_ptr(data), &sgio->usr_ptr))
 348                return -EFAULT;
 349
 350        err = do_ioctl(file, cmd, (unsigned long) sgio);
 351
 352        if (err >= 0) {
 353                void __user *datap;
 354
 355                if (copy_in_user(&sgio32->pack_id, &sgio->pack_id,
 356                                 sizeof(int)) ||
 357                    get_user(datap, &sgio->usr_ptr) ||
 358                    put_user((u32)(unsigned long)datap,
 359                             &sgio32->usr_ptr) ||
 360                    copy_in_user(&sgio32->status, &sgio->status,
 361                                 (4 * sizeof(unsigned char)) +
 362                                 (2 * sizeof(unsigned short)) +
 363                                 (3 * sizeof(int))))
 364                        err = -EFAULT;
 365        }
 366
 367        return err;
 368}
 369
 370struct compat_sg_req_info { /* used by SG_GET_REQUEST_TABLE ioctl() */
 371        char req_state;
 372        char orphan;
 373        char sg_io_owned;
 374        char problem;
 375        int pack_id;
 376        compat_uptr_t usr_ptr;
 377        unsigned int duration;
 378        int unused;
 379};
 380
 381static int sg_grt_trans(struct file *file,
 382                unsigned int cmd, struct compat_sg_req_info __user *o)
 383{
 384        int err, i;
 385        sg_req_info_t __user *r;
 386        r = compat_alloc_user_space(sizeof(sg_req_info_t)*SG_MAX_QUEUE);
 387        err = do_ioctl(file, cmd, (unsigned long)r);
 388        if (err < 0)
 389                return err;
 390        for (i = 0; i < SG_MAX_QUEUE; i++) {
 391                void __user *ptr;
 392                int d;
 393
 394                if (copy_in_user(o + i, r + i, offsetof(sg_req_info_t, usr_ptr)) ||
 395                    get_user(ptr, &r[i].usr_ptr) ||
 396                    get_user(d, &r[i].duration) ||
 397                    put_user((u32)(unsigned long)(ptr), &o[i].usr_ptr) ||
 398                    put_user(d, &o[i].duration))
 399                        return -EFAULT;
 400        }
 401        return err;
 402}
 403#endif /* CONFIG_BLOCK */
 404
 405struct sock_fprog32 {
 406        unsigned short  len;
 407        compat_caddr_t  filter;
 408};
 409
 410#define PPPIOCSPASS32   _IOW('t', 71, struct sock_fprog32)
 411#define PPPIOCSACTIVE32 _IOW('t', 70, struct sock_fprog32)
 412
 413static int ppp_sock_fprog_ioctl_trans(struct file *file,
 414                unsigned int cmd, struct sock_fprog32 __user *u_fprog32)
 415{
 416        struct sock_fprog __user *u_fprog64 = compat_alloc_user_space(sizeof(struct sock_fprog));
 417        void __user *fptr64;
 418        u32 fptr32;
 419        u16 flen;
 420
 421        if (get_user(flen, &u_fprog32->len) ||
 422            get_user(fptr32, &u_fprog32->filter))
 423                return -EFAULT;
 424
 425        fptr64 = compat_ptr(fptr32);
 426
 427        if (put_user(flen, &u_fprog64->len) ||
 428            put_user(fptr64, &u_fprog64->filter))
 429                return -EFAULT;
 430
 431        if (cmd == PPPIOCSPASS32)
 432                cmd = PPPIOCSPASS;
 433        else
 434                cmd = PPPIOCSACTIVE;
 435
 436        return do_ioctl(file, cmd, (unsigned long) u_fprog64);
 437}
 438
 439struct ppp_option_data32 {
 440        compat_caddr_t  ptr;
 441        u32                     length;
 442        compat_int_t            transmit;
 443};
 444#define PPPIOCSCOMPRESS32       _IOW('t', 77, struct ppp_option_data32)
 445
 446struct ppp_idle32 {
 447        compat_time_t xmit_idle;
 448        compat_time_t recv_idle;
 449};
 450#define PPPIOCGIDLE32           _IOR('t', 63, struct ppp_idle32)
 451
 452static int ppp_gidle(struct file *file, unsigned int cmd,
 453                struct ppp_idle32 __user *idle32)
 454{
 455        struct ppp_idle __user *idle;
 456        __kernel_time_t xmit, recv;
 457        int err;
 458
 459        idle = compat_alloc_user_space(sizeof(*idle));
 460
 461        err = do_ioctl(file, PPPIOCGIDLE, (unsigned long) idle);
 462
 463        if (!err) {
 464                if (get_user(xmit, &idle->xmit_idle) ||
 465                    get_user(recv, &idle->recv_idle) ||
 466                    put_user(xmit, &idle32->xmit_idle) ||
 467                    put_user(recv, &idle32->recv_idle))
 468                        err = -EFAULT;
 469        }
 470        return err;
 471}
 472
 473static int ppp_scompress(struct file *file, unsigned int cmd,
 474        struct ppp_option_data32 __user *odata32)
 475{
 476        struct ppp_option_data __user *odata;
 477        __u32 data;
 478        void __user *datap;
 479
 480        odata = compat_alloc_user_space(sizeof(*odata));
 481
 482        if (get_user(data, &odata32->ptr))
 483                return -EFAULT;
 484
 485        datap = compat_ptr(data);
 486        if (put_user(datap, &odata->ptr))
 487                return -EFAULT;
 488
 489        if (copy_in_user(&odata->length, &odata32->length,
 490                         sizeof(__u32) + sizeof(int)))
 491                return -EFAULT;
 492
 493        return do_ioctl(file, PPPIOCSCOMPRESS, (unsigned long) odata);
 494}
 495
 496#ifdef CONFIG_BLOCK
 497struct mtget32 {
 498        compat_long_t   mt_type;
 499        compat_long_t   mt_resid;
 500        compat_long_t   mt_dsreg;
 501        compat_long_t   mt_gstat;
 502        compat_long_t   mt_erreg;
 503        compat_daddr_t  mt_fileno;
 504        compat_daddr_t  mt_blkno;
 505};
 506#define MTIOCGET32      _IOR('m', 2, struct mtget32)
 507
 508struct mtpos32 {
 509        compat_long_t   mt_blkno;
 510};
 511#define MTIOCPOS32      _IOR('m', 3, struct mtpos32)
 512
 513static int mt_ioctl_trans(struct file *file,
 514                unsigned int cmd, void __user *argp)
 515{
 516        /* NULL initialization to make gcc shut up */
 517        struct mtget __user *get = NULL;
 518        struct mtget32 __user *umget32;
 519        struct mtpos __user *pos = NULL;
 520        struct mtpos32 __user *upos32;
 521        unsigned long kcmd;
 522        void *karg;
 523        int err = 0;
 524
 525        switch(cmd) {
 526        case MTIOCPOS32:
 527                kcmd = MTIOCPOS;
 528                pos = compat_alloc_user_space(sizeof(*pos));
 529                karg = pos;
 530                break;
 531        default:        /* MTIOCGET32 */
 532                kcmd = MTIOCGET;
 533                get = compat_alloc_user_space(sizeof(*get));
 534                karg = get;
 535                break;
 536        }
 537        if (karg == NULL)
 538                return -EFAULT;
 539        err = do_ioctl(file, kcmd, (unsigned long)karg);
 540        if (err)
 541                return err;
 542        switch (cmd) {
 543        case MTIOCPOS32:
 544                upos32 = argp;
 545                err = convert_in_user(&pos->mt_blkno, &upos32->mt_blkno);
 546                break;
 547        case MTIOCGET32:
 548                umget32 = argp;
 549                err = convert_in_user(&get->mt_type, &umget32->mt_type);
 550                err |= convert_in_user(&get->mt_resid, &umget32->mt_resid);
 551                err |= convert_in_user(&get->mt_dsreg, &umget32->mt_dsreg);
 552                err |= convert_in_user(&get->mt_gstat, &umget32->mt_gstat);
 553                err |= convert_in_user(&get->mt_erreg, &umget32->mt_erreg);
 554                err |= convert_in_user(&get->mt_fileno, &umget32->mt_fileno);
 555                err |= convert_in_user(&get->mt_blkno, &umget32->mt_blkno);
 556                break;
 557        }
 558        return err ? -EFAULT: 0;
 559}
 560
 561#endif /* CONFIG_BLOCK */
 562
 563/* Bluetooth ioctls */
 564#define HCIUARTSETPROTO         _IOW('U', 200, int)
 565#define HCIUARTGETPROTO         _IOR('U', 201, int)
 566#define HCIUARTGETDEVICE        _IOR('U', 202, int)
 567#define HCIUARTSETFLAGS         _IOW('U', 203, int)
 568#define HCIUARTGETFLAGS         _IOR('U', 204, int)
 569
 570struct serial_struct32 {
 571        compat_int_t    type;
 572        compat_int_t    line;
 573        compat_uint_t   port;
 574        compat_int_t    irq;
 575        compat_int_t    flags;
 576        compat_int_t    xmit_fifo_size;
 577        compat_int_t    custom_divisor;
 578        compat_int_t    baud_base;
 579        unsigned short  close_delay;
 580        char    io_type;
 581        char    reserved_char[1];
 582        compat_int_t    hub6;
 583        unsigned short  closing_wait; /* time to wait before closing */
 584        unsigned short  closing_wait2; /* no longer used... */
 585        compat_uint_t   iomem_base;
 586        unsigned short  iomem_reg_shift;
 587        unsigned int    port_high;
 588     /* compat_ulong_t  iomap_base FIXME */
 589        compat_int_t    reserved[1];
 590};
 591
 592static int serial_struct_ioctl(struct file *file,
 593                unsigned cmd, struct serial_struct32 __user *ss32)
 594{
 595        typedef struct serial_struct32 SS32;
 596        int err;
 597        struct serial_struct __user *ss = compat_alloc_user_space(sizeof(*ss));
 598        __u32 udata;
 599        unsigned int base;
 600        unsigned char *iomem_base;
 601
 602        if (ss == NULL)
 603                return -EFAULT;
 604        if (cmd == TIOCSSERIAL) {
 605                if (copy_in_user(ss, ss32, offsetof(SS32, iomem_base)) ||
 606                    get_user(udata, &ss32->iomem_base))
 607                        return -EFAULT;
 608                iomem_base = compat_ptr(udata);
 609                if (put_user(iomem_base, &ss->iomem_base) ||
 610                    convert_in_user(&ss32->iomem_reg_shift,
 611                      &ss->iomem_reg_shift) ||
 612                    convert_in_user(&ss32->port_high, &ss->port_high) ||
 613                    put_user(0UL, &ss->iomap_base))
 614                        return -EFAULT;
 615        }
 616        err = do_ioctl(file, cmd, (unsigned long)ss);
 617        if (cmd == TIOCGSERIAL && err >= 0) {
 618                if (copy_in_user(ss32, ss, offsetof(SS32, iomem_base)) ||
 619                    get_user(iomem_base, &ss->iomem_base))
 620                        return -EFAULT;
 621                base = (unsigned long)iomem_base  >> 32 ?
 622                        0xffffffff : (unsigned)(unsigned long)iomem_base;
 623                if (put_user(base, &ss32->iomem_base) ||
 624                    convert_in_user(&ss->iomem_reg_shift,
 625                      &ss32->iomem_reg_shift) ||
 626                    convert_in_user(&ss->port_high, &ss32->port_high))
 627                        return -EFAULT;
 628        }
 629        return err;
 630}
 631
 632/*
 633 * simple reversible transform to make our table more evenly
 634 * distributed after sorting.
 635 */
 636#define XFORM(i) (((i) ^ ((i) << 27) ^ ((i) << 17)) & 0xffffffff)
 637
 638#define COMPATIBLE_IOCTL(cmd) XFORM((u32)cmd),
 639/* ioctl should not be warned about even if it's not implemented.
 640   Valid reasons to use this:
 641   - It is implemented with ->compat_ioctl on some device, but programs
 642   call it on others too.
 643   - The ioctl is not implemented in the native kernel, but programs
 644   call it commonly anyways.
 645   Most other reasons are not valid. */
 646#define IGNORE_IOCTL(cmd) COMPATIBLE_IOCTL(cmd)
 647
 648static unsigned int ioctl_pointer[] = {
 649/* compatible ioctls first */
 650COMPATIBLE_IOCTL(0x4B50)   /* KDGHWCLK - not in the kernel, but don't complain */
 651COMPATIBLE_IOCTL(0x4B51)   /* KDSHWCLK - not in the kernel, but don't complain */
 652
 653/* Big T */
 654COMPATIBLE_IOCTL(TCGETA)
 655COMPATIBLE_IOCTL(TCSETA)
 656COMPATIBLE_IOCTL(TCSETAW)
 657COMPATIBLE_IOCTL(TCSETAF)
 658COMPATIBLE_IOCTL(TCSBRK)
 659COMPATIBLE_IOCTL(TCXONC)
 660COMPATIBLE_IOCTL(TCFLSH)
 661COMPATIBLE_IOCTL(TCGETS)
 662COMPATIBLE_IOCTL(TCSETS)
 663COMPATIBLE_IOCTL(TCSETSW)
 664COMPATIBLE_IOCTL(TCSETSF)
 665COMPATIBLE_IOCTL(TIOCLINUX)
 666COMPATIBLE_IOCTL(TIOCSBRK)
 667COMPATIBLE_IOCTL(TIOCGDEV)
 668COMPATIBLE_IOCTL(TIOCCBRK)
 669COMPATIBLE_IOCTL(TIOCGSID)
 670COMPATIBLE_IOCTL(TIOCGICOUNT)
 671COMPATIBLE_IOCTL(TIOCGEXCL)
 672/* Little t */
 673COMPATIBLE_IOCTL(TIOCGETD)
 674COMPATIBLE_IOCTL(TIOCSETD)
 675COMPATIBLE_IOCTL(TIOCEXCL)
 676COMPATIBLE_IOCTL(TIOCNXCL)
 677COMPATIBLE_IOCTL(TIOCCONS)
 678COMPATIBLE_IOCTL(TIOCGSOFTCAR)
 679COMPATIBLE_IOCTL(TIOCSSOFTCAR)
 680COMPATIBLE_IOCTL(TIOCSWINSZ)
 681COMPATIBLE_IOCTL(TIOCGWINSZ)
 682COMPATIBLE_IOCTL(TIOCMGET)
 683COMPATIBLE_IOCTL(TIOCMBIC)
 684COMPATIBLE_IOCTL(TIOCMBIS)
 685COMPATIBLE_IOCTL(TIOCMSET)
 686COMPATIBLE_IOCTL(TIOCNOTTY)
 687COMPATIBLE_IOCTL(TIOCSTI)
 688COMPATIBLE_IOCTL(TIOCOUTQ)
 689COMPATIBLE_IOCTL(TIOCSPGRP)
 690COMPATIBLE_IOCTL(TIOCGPGRP)
 691COMPATIBLE_IOCTL(TIOCSERGETLSR)
 692#ifdef TIOCSRS485
 693COMPATIBLE_IOCTL(TIOCSRS485)
 694#endif
 695#ifdef TIOCGRS485
 696COMPATIBLE_IOCTL(TIOCGRS485)
 697#endif
 698#ifdef TCGETS2
 699COMPATIBLE_IOCTL(TCGETS2)
 700COMPATIBLE_IOCTL(TCSETS2)
 701COMPATIBLE_IOCTL(TCSETSW2)
 702COMPATIBLE_IOCTL(TCSETSF2)
 703#endif
 704/* 'X' - originally XFS but some now in the VFS */
 705COMPATIBLE_IOCTL(FITRIM)
 706COMPATIBLE_IOCTL(KDGETKEYCODE)
 707COMPATIBLE_IOCTL(KDSETKEYCODE)
 708COMPATIBLE_IOCTL(KDGKBTYPE)
 709COMPATIBLE_IOCTL(KDGETMODE)
 710COMPATIBLE_IOCTL(KDGKBMODE)
 711COMPATIBLE_IOCTL(KDGKBMETA)
 712COMPATIBLE_IOCTL(KDGKBENT)
 713COMPATIBLE_IOCTL(KDSKBENT)
 714COMPATIBLE_IOCTL(KDGKBSENT)
 715COMPATIBLE_IOCTL(KDSKBSENT)
 716COMPATIBLE_IOCTL(KDGKBDIACR)
 717COMPATIBLE_IOCTL(KDSKBDIACR)
 718COMPATIBLE_IOCTL(KDGKBDIACRUC)
 719COMPATIBLE_IOCTL(KDSKBDIACRUC)
 720COMPATIBLE_IOCTL(KDKBDREP)
 721COMPATIBLE_IOCTL(KDGKBLED)
 722COMPATIBLE_IOCTL(KDGETLED)
 723#ifdef CONFIG_BLOCK
 724/* Big S */
 725COMPATIBLE_IOCTL(SCSI_IOCTL_GET_IDLUN)
 726COMPATIBLE_IOCTL(SCSI_IOCTL_DOORLOCK)
 727COMPATIBLE_IOCTL(SCSI_IOCTL_DOORUNLOCK)
 728COMPATIBLE_IOCTL(SCSI_IOCTL_TEST_UNIT_READY)
 729COMPATIBLE_IOCTL(SCSI_IOCTL_GET_BUS_NUMBER)
 730COMPATIBLE_IOCTL(SCSI_IOCTL_SEND_COMMAND)
 731COMPATIBLE_IOCTL(SCSI_IOCTL_PROBE_HOST)
 732COMPATIBLE_IOCTL(SCSI_IOCTL_GET_PCI)
 733#endif
 734/* Big V (don't complain on serial console) */
 735IGNORE_IOCTL(VT_OPENQRY)
 736IGNORE_IOCTL(VT_GETMODE)
 737/*
 738 * These two are only for the sbus rtc driver, but
 739 * hwclock tries them on every rtc device first when
 740 * running on sparc.  On other architectures the entries
 741 * are useless but harmless.
 742 */
 743COMPATIBLE_IOCTL(_IOR('p', 20, int[7])) /* RTCGET */
 744COMPATIBLE_IOCTL(_IOW('p', 21, int[7])) /* RTCSET */
 745/* Little m */
 746COMPATIBLE_IOCTL(MTIOCTOP)
 747#ifdef CONFIG_BLOCK
 748/* md calls this on random blockdevs */
 749IGNORE_IOCTL(RAID_VERSION)
 750/* qemu/qemu-img might call these two on plain files for probing */
 751IGNORE_IOCTL(CDROM_DRIVE_STATUS)
 752IGNORE_IOCTL(FDGETPRM32)
 753/* SG stuff */
 754COMPATIBLE_IOCTL(SG_SET_TIMEOUT)
 755COMPATIBLE_IOCTL(SG_GET_TIMEOUT)
 756COMPATIBLE_IOCTL(SG_EMULATED_HOST)
 757COMPATIBLE_IOCTL(SG_GET_TRANSFORM)
 758COMPATIBLE_IOCTL(SG_SET_RESERVED_SIZE)
 759COMPATIBLE_IOCTL(SG_GET_RESERVED_SIZE)
 760COMPATIBLE_IOCTL(SG_GET_SCSI_ID)
 761COMPATIBLE_IOCTL(SG_SET_FORCE_LOW_DMA)
 762COMPATIBLE_IOCTL(SG_GET_LOW_DMA)
 763COMPATIBLE_IOCTL(SG_SET_FORCE_PACK_ID)
 764COMPATIBLE_IOCTL(SG_GET_PACK_ID)
 765COMPATIBLE_IOCTL(SG_GET_NUM_WAITING)
 766COMPATIBLE_IOCTL(SG_SET_DEBUG)
 767COMPATIBLE_IOCTL(SG_GET_SG_TABLESIZE)
 768COMPATIBLE_IOCTL(SG_GET_COMMAND_Q)
 769COMPATIBLE_IOCTL(SG_SET_COMMAND_Q)
 770COMPATIBLE_IOCTL(SG_GET_VERSION_NUM)
 771COMPATIBLE_IOCTL(SG_NEXT_CMD_LEN)
 772COMPATIBLE_IOCTL(SG_SCSI_RESET)
 773COMPATIBLE_IOCTL(SG_GET_REQUEST_TABLE)
 774COMPATIBLE_IOCTL(SG_SET_KEEP_ORPHAN)
 775COMPATIBLE_IOCTL(SG_GET_KEEP_ORPHAN)
 776#endif
 777/* PPP stuff */
 778COMPATIBLE_IOCTL(PPPIOCGFLAGS)
 779COMPATIBLE_IOCTL(PPPIOCSFLAGS)
 780COMPATIBLE_IOCTL(PPPIOCGASYNCMAP)
 781COMPATIBLE_IOCTL(PPPIOCSASYNCMAP)
 782COMPATIBLE_IOCTL(PPPIOCGUNIT)
 783COMPATIBLE_IOCTL(PPPIOCGRASYNCMAP)
 784COMPATIBLE_IOCTL(PPPIOCSRASYNCMAP)
 785COMPATIBLE_IOCTL(PPPIOCGMRU)
 786COMPATIBLE_IOCTL(PPPIOCSMRU)
 787COMPATIBLE_IOCTL(PPPIOCSMAXCID)
 788COMPATIBLE_IOCTL(PPPIOCGXASYNCMAP)
 789COMPATIBLE_IOCTL(PPPIOCSXASYNCMAP)
 790COMPATIBLE_IOCTL(PPPIOCXFERUNIT)
 791/* PPPIOCSCOMPRESS is translated */
 792COMPATIBLE_IOCTL(PPPIOCGNPMODE)
 793COMPATIBLE_IOCTL(PPPIOCSNPMODE)
 794COMPATIBLE_IOCTL(PPPIOCGDEBUG)
 795COMPATIBLE_IOCTL(PPPIOCSDEBUG)
 796/* PPPIOCSPASS is translated */
 797/* PPPIOCSACTIVE is translated */
 798/* PPPIOCGIDLE is translated */
 799COMPATIBLE_IOCTL(PPPIOCNEWUNIT)
 800COMPATIBLE_IOCTL(PPPIOCATTACH)
 801COMPATIBLE_IOCTL(PPPIOCDETACH)
 802COMPATIBLE_IOCTL(PPPIOCSMRRU)
 803COMPATIBLE_IOCTL(PPPIOCCONNECT)
 804COMPATIBLE_IOCTL(PPPIOCDISCONN)
 805COMPATIBLE_IOCTL(PPPIOCATTCHAN)
 806COMPATIBLE_IOCTL(PPPIOCGCHAN)
 807COMPATIBLE_IOCTL(PPPIOCGL2TPSTATS)
 808/* PPPOX */
 809COMPATIBLE_IOCTL(PPPOEIOCSFWD)
 810COMPATIBLE_IOCTL(PPPOEIOCDFWD)
 811/* Big A */
 812/* sparc only */
 813/* Big Q for sound/OSS */
 814COMPATIBLE_IOCTL(SNDCTL_SEQ_RESET)
 815COMPATIBLE_IOCTL(SNDCTL_SEQ_SYNC)
 816COMPATIBLE_IOCTL(SNDCTL_SYNTH_INFO)
 817COMPATIBLE_IOCTL(SNDCTL_SEQ_CTRLRATE)
 818COMPATIBLE_IOCTL(SNDCTL_SEQ_GETOUTCOUNT)
 819COMPATIBLE_IOCTL(SNDCTL_SEQ_GETINCOUNT)
 820COMPATIBLE_IOCTL(SNDCTL_SEQ_PERCMODE)
 821COMPATIBLE_IOCTL(SNDCTL_FM_LOAD_INSTR)
 822COMPATIBLE_IOCTL(SNDCTL_SEQ_TESTMIDI)
 823COMPATIBLE_IOCTL(SNDCTL_SEQ_RESETSAMPLES)
 824COMPATIBLE_IOCTL(SNDCTL_SEQ_NRSYNTHS)
 825COMPATIBLE_IOCTL(SNDCTL_SEQ_NRMIDIS)
 826COMPATIBLE_IOCTL(SNDCTL_MIDI_INFO)
 827COMPATIBLE_IOCTL(SNDCTL_SEQ_THRESHOLD)
 828COMPATIBLE_IOCTL(SNDCTL_SYNTH_MEMAVL)
 829COMPATIBLE_IOCTL(SNDCTL_FM_4OP_ENABLE)
 830COMPATIBLE_IOCTL(SNDCTL_SEQ_PANIC)
 831COMPATIBLE_IOCTL(SNDCTL_SEQ_OUTOFBAND)
 832COMPATIBLE_IOCTL(SNDCTL_SEQ_GETTIME)
 833COMPATIBLE_IOCTL(SNDCTL_SYNTH_ID)
 834COMPATIBLE_IOCTL(SNDCTL_SYNTH_CONTROL)
 835COMPATIBLE_IOCTL(SNDCTL_SYNTH_REMOVESAMPLE)
 836/* Big T for sound/OSS */
 837COMPATIBLE_IOCTL(SNDCTL_TMR_TIMEBASE)
 838COMPATIBLE_IOCTL(SNDCTL_TMR_START)
 839COMPATIBLE_IOCTL(SNDCTL_TMR_STOP)
 840COMPATIBLE_IOCTL(SNDCTL_TMR_CONTINUE)
 841COMPATIBLE_IOCTL(SNDCTL_TMR_TEMPO)
 842COMPATIBLE_IOCTL(SNDCTL_TMR_SOURCE)
 843COMPATIBLE_IOCTL(SNDCTL_TMR_METRONOME)
 844COMPATIBLE_IOCTL(SNDCTL_TMR_SELECT)
 845/* Little m for sound/OSS */
 846COMPATIBLE_IOCTL(SNDCTL_MIDI_PRETIME)
 847COMPATIBLE_IOCTL(SNDCTL_MIDI_MPUMODE)
 848COMPATIBLE_IOCTL(SNDCTL_MIDI_MPUCMD)
 849/* Big P for sound/OSS */
 850COMPATIBLE_IOCTL(SNDCTL_DSP_RESET)
 851COMPATIBLE_IOCTL(SNDCTL_DSP_SYNC)
 852COMPATIBLE_IOCTL(SNDCTL_DSP_SPEED)
 853COMPATIBLE_IOCTL(SNDCTL_DSP_STEREO)
 854COMPATIBLE_IOCTL(SNDCTL_DSP_GETBLKSIZE)
 855COMPATIBLE_IOCTL(SNDCTL_DSP_CHANNELS)
 856COMPATIBLE_IOCTL(SOUND_PCM_WRITE_FILTER)
 857COMPATIBLE_IOCTL(SNDCTL_DSP_POST)
 858COMPATIBLE_IOCTL(SNDCTL_DSP_SUBDIVIDE)
 859COMPATIBLE_IOCTL(SNDCTL_DSP_SETFRAGMENT)
 860COMPATIBLE_IOCTL(SNDCTL_DSP_GETFMTS)
 861COMPATIBLE_IOCTL(SNDCTL_DSP_SETFMT)
 862COMPATIBLE_IOCTL(SNDCTL_DSP_GETOSPACE)
 863COMPATIBLE_IOCTL(SNDCTL_DSP_GETISPACE)
 864COMPATIBLE_IOCTL(SNDCTL_DSP_NONBLOCK)
 865COMPATIBLE_IOCTL(SNDCTL_DSP_GETCAPS)
 866COMPATIBLE_IOCTL(SNDCTL_DSP_GETTRIGGER)
 867COMPATIBLE_IOCTL(SNDCTL_DSP_SETTRIGGER)
 868COMPATIBLE_IOCTL(SNDCTL_DSP_GETIPTR)
 869COMPATIBLE_IOCTL(SNDCTL_DSP_GETOPTR)
 870/* SNDCTL_DSP_MAPINBUF,  XXX needs translation */
 871/* SNDCTL_DSP_MAPOUTBUF,  XXX needs translation */
 872COMPATIBLE_IOCTL(SNDCTL_DSP_SETSYNCRO)
 873COMPATIBLE_IOCTL(SNDCTL_DSP_SETDUPLEX)
 874COMPATIBLE_IOCTL(SNDCTL_DSP_GETODELAY)
 875COMPATIBLE_IOCTL(SNDCTL_DSP_PROFILE)
 876COMPATIBLE_IOCTL(SOUND_PCM_READ_RATE)
 877COMPATIBLE_IOCTL(SOUND_PCM_READ_CHANNELS)
 878COMPATIBLE_IOCTL(SOUND_PCM_READ_BITS)
 879COMPATIBLE_IOCTL(SOUND_PCM_READ_FILTER)
 880/* Big C for sound/OSS */
 881COMPATIBLE_IOCTL(SNDCTL_COPR_RESET)
 882COMPATIBLE_IOCTL(SNDCTL_COPR_LOAD)
 883COMPATIBLE_IOCTL(SNDCTL_COPR_RDATA)
 884COMPATIBLE_IOCTL(SNDCTL_COPR_RCODE)
 885COMPATIBLE_IOCTL(SNDCTL_COPR_WDATA)
 886COMPATIBLE_IOCTL(SNDCTL_COPR_WCODE)
 887COMPATIBLE_IOCTL(SNDCTL_COPR_RUN)
 888COMPATIBLE_IOCTL(SNDCTL_COPR_HALT)
 889COMPATIBLE_IOCTL(SNDCTL_COPR_SENDMSG)
 890COMPATIBLE_IOCTL(SNDCTL_COPR_RCVMSG)
 891/* Big M for sound/OSS */
 892COMPATIBLE_IOCTL(SOUND_MIXER_READ_VOLUME)
 893COMPATIBLE_IOCTL(SOUND_MIXER_READ_BASS)
 894COMPATIBLE_IOCTL(SOUND_MIXER_READ_TREBLE)
 895COMPATIBLE_IOCTL(SOUND_MIXER_READ_SYNTH)
 896COMPATIBLE_IOCTL(SOUND_MIXER_READ_PCM)
 897COMPATIBLE_IOCTL(SOUND_MIXER_READ_SPEAKER)
 898COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE)
 899COMPATIBLE_IOCTL(SOUND_MIXER_READ_MIC)
 900COMPATIBLE_IOCTL(SOUND_MIXER_READ_CD)
 901COMPATIBLE_IOCTL(SOUND_MIXER_READ_IMIX)
 902COMPATIBLE_IOCTL(SOUND_MIXER_READ_ALTPCM)
 903COMPATIBLE_IOCTL(SOUND_MIXER_READ_RECLEV)
 904COMPATIBLE_IOCTL(SOUND_MIXER_READ_IGAIN)
 905COMPATIBLE_IOCTL(SOUND_MIXER_READ_OGAIN)
 906COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE1)
 907COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE2)
 908COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE3)
 909COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_DIGITAL1))
 910COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_DIGITAL2))
 911COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_DIGITAL3))
 912COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_PHONEIN))
 913COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_PHONEOUT))
 914COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_VIDEO))
 915COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_RADIO))
 916COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_MONITOR))
 917COMPATIBLE_IOCTL(SOUND_MIXER_READ_MUTE)
 918/* SOUND_MIXER_READ_ENHANCE,  same value as READ_MUTE */
 919/* SOUND_MIXER_READ_LOUD,  same value as READ_MUTE */
 920COMPATIBLE_IOCTL(SOUND_MIXER_READ_RECSRC)
 921COMPATIBLE_IOCTL(SOUND_MIXER_READ_DEVMASK)
 922COMPATIBLE_IOCTL(SOUND_MIXER_READ_RECMASK)
 923COMPATIBLE_IOCTL(SOUND_MIXER_READ_STEREODEVS)
 924COMPATIBLE_IOCTL(SOUND_MIXER_READ_CAPS)
 925COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_VOLUME)
 926COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_BASS)
 927COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_TREBLE)
 928COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_SYNTH)
 929COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_PCM)
 930COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_SPEAKER)
 931COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE)
 932COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_MIC)
 933COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_CD)
 934COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_IMIX)
 935COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_ALTPCM)
 936COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_RECLEV)
 937COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_IGAIN)
 938COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_OGAIN)
 939COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE1)
 940COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE2)
 941COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE3)
 942COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_DIGITAL1))
 943COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_DIGITAL2))
 944COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_DIGITAL3))
 945COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_PHONEIN))
 946COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_PHONEOUT))
 947COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_VIDEO))
 948COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_RADIO))
 949COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_MONITOR))
 950COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_MUTE)
 951/* SOUND_MIXER_WRITE_ENHANCE,  same value as WRITE_MUTE */
 952/* SOUND_MIXER_WRITE_LOUD,  same value as WRITE_MUTE */
 953COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_RECSRC)
 954COMPATIBLE_IOCTL(SOUND_MIXER_INFO)
 955COMPATIBLE_IOCTL(SOUND_OLD_MIXER_INFO)
 956COMPATIBLE_IOCTL(SOUND_MIXER_ACCESS)
 957COMPATIBLE_IOCTL(SOUND_MIXER_AGC)
 958COMPATIBLE_IOCTL(SOUND_MIXER_3DSE)
 959COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE1)
 960COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE2)
 961COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE3)
 962COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE4)
 963COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE5)
 964COMPATIBLE_IOCTL(SOUND_MIXER_GETLEVELS)
 965COMPATIBLE_IOCTL(SOUND_MIXER_SETLEVELS)
 966COMPATIBLE_IOCTL(OSS_GETVERSION)
 967/* Raw devices */
 968COMPATIBLE_IOCTL(RAW_SETBIND)
 969COMPATIBLE_IOCTL(RAW_GETBIND)
 970/* Watchdog */
 971COMPATIBLE_IOCTL(WDIOC_GETSUPPORT)
 972COMPATIBLE_IOCTL(WDIOC_GETSTATUS)
 973COMPATIBLE_IOCTL(WDIOC_GETBOOTSTATUS)
 974COMPATIBLE_IOCTL(WDIOC_GETTEMP)
 975COMPATIBLE_IOCTL(WDIOC_SETOPTIONS)
 976COMPATIBLE_IOCTL(WDIOC_KEEPALIVE)
 977COMPATIBLE_IOCTL(WDIOC_SETTIMEOUT)
 978COMPATIBLE_IOCTL(WDIOC_GETTIMEOUT)
 979COMPATIBLE_IOCTL(WDIOC_SETPRETIMEOUT)
 980COMPATIBLE_IOCTL(WDIOC_GETPRETIMEOUT)
 981/* Big R */
 982COMPATIBLE_IOCTL(RNDGETENTCNT)
 983COMPATIBLE_IOCTL(RNDADDTOENTCNT)
 984COMPATIBLE_IOCTL(RNDGETPOOL)
 985COMPATIBLE_IOCTL(RNDADDENTROPY)
 986COMPATIBLE_IOCTL(RNDZAPENTCNT)
 987COMPATIBLE_IOCTL(RNDCLEARPOOL)
 988/* Bluetooth */
 989COMPATIBLE_IOCTL(HCIUARTSETPROTO)
 990COMPATIBLE_IOCTL(HCIUARTGETPROTO)
 991COMPATIBLE_IOCTL(HCIUARTGETDEVICE)
 992COMPATIBLE_IOCTL(HCIUARTSETFLAGS)
 993COMPATIBLE_IOCTL(HCIUARTGETFLAGS)
 994/* CAPI */
 995COMPATIBLE_IOCTL(CAPI_REGISTER)
 996COMPATIBLE_IOCTL(CAPI_GET_MANUFACTURER)
 997COMPATIBLE_IOCTL(CAPI_GET_VERSION)
 998COMPATIBLE_IOCTL(CAPI_GET_SERIAL)
 999COMPATIBLE_IOCTL(CAPI_GET_PROFILE)
1000COMPATIBLE_IOCTL(CAPI_MANUFACTURER_CMD)
1001COMPATIBLE_IOCTL(CAPI_GET_ERRCODE)
1002COMPATIBLE_IOCTL(CAPI_INSTALLED)
1003COMPATIBLE_IOCTL(CAPI_GET_FLAGS)
1004COMPATIBLE_IOCTL(CAPI_SET_FLAGS)
1005COMPATIBLE_IOCTL(CAPI_CLR_FLAGS)
1006COMPATIBLE_IOCTL(CAPI_NCCI_OPENCOUNT)
1007COMPATIBLE_IOCTL(CAPI_NCCI_GETUNIT)
1008/* Siemens Gigaset */
1009COMPATIBLE_IOCTL(GIGASET_REDIR)
1010COMPATIBLE_IOCTL(GIGASET_CONFIG)
1011COMPATIBLE_IOCTL(GIGASET_BRKCHARS)
1012COMPATIBLE_IOCTL(GIGASET_VERSION)
1013/* Misc. */
1014COMPATIBLE_IOCTL(0x41545900)            /* ATYIO_CLKR */
1015COMPATIBLE_IOCTL(0x41545901)            /* ATYIO_CLKW */
1016COMPATIBLE_IOCTL(PCIIOC_CONTROLLER)
1017COMPATIBLE_IOCTL(PCIIOC_MMAP_IS_IO)
1018COMPATIBLE_IOCTL(PCIIOC_MMAP_IS_MEM)
1019COMPATIBLE_IOCTL(PCIIOC_WRITE_COMBINE)
1020/* hiddev */
1021COMPATIBLE_IOCTL(HIDIOCGVERSION)
1022COMPATIBLE_IOCTL(HIDIOCAPPLICATION)
1023COMPATIBLE_IOCTL(HIDIOCGDEVINFO)
1024COMPATIBLE_IOCTL(HIDIOCGSTRING)
1025COMPATIBLE_IOCTL(HIDIOCINITREPORT)
1026COMPATIBLE_IOCTL(HIDIOCGREPORT)
1027COMPATIBLE_IOCTL(HIDIOCSREPORT)
1028COMPATIBLE_IOCTL(HIDIOCGREPORTINFO)
1029COMPATIBLE_IOCTL(HIDIOCGFIELDINFO)
1030COMPATIBLE_IOCTL(HIDIOCGUSAGE)
1031COMPATIBLE_IOCTL(HIDIOCSUSAGE)
1032COMPATIBLE_IOCTL(HIDIOCGUCODE)
1033COMPATIBLE_IOCTL(HIDIOCGFLAG)
1034COMPATIBLE_IOCTL(HIDIOCSFLAG)
1035COMPATIBLE_IOCTL(HIDIOCGCOLLECTIONINDEX)
1036COMPATIBLE_IOCTL(HIDIOCGCOLLECTIONINFO)
1037/* dvb */
1038COMPATIBLE_IOCTL(AUDIO_STOP)
1039COMPATIBLE_IOCTL(AUDIO_PLAY)
1040COMPATIBLE_IOCTL(AUDIO_PAUSE)
1041COMPATIBLE_IOCTL(AUDIO_CONTINUE)
1042COMPATIBLE_IOCTL(AUDIO_SELECT_SOURCE)
1043COMPATIBLE_IOCTL(AUDIO_SET_MUTE)
1044COMPATIBLE_IOCTL(AUDIO_SET_AV_SYNC)
1045COMPATIBLE_IOCTL(AUDIO_SET_BYPASS_MODE)
1046COMPATIBLE_IOCTL(AUDIO_CHANNEL_SELECT)
1047COMPATIBLE_IOCTL(AUDIO_GET_STATUS)
1048COMPATIBLE_IOCTL(AUDIO_GET_CAPABILITIES)
1049COMPATIBLE_IOCTL(AUDIO_CLEAR_BUFFER)
1050COMPATIBLE_IOCTL(AUDIO_SET_ID)
1051COMPATIBLE_IOCTL(AUDIO_SET_MIXER)
1052COMPATIBLE_IOCTL(AUDIO_SET_STREAMTYPE)
1053COMPATIBLE_IOCTL(AUDIO_SET_EXT_ID)
1054COMPATIBLE_IOCTL(AUDIO_SET_ATTRIBUTES)
1055COMPATIBLE_IOCTL(AUDIO_SET_KARAOKE)
1056COMPATIBLE_IOCTL(DMX_START)
1057COMPATIBLE_IOCTL(DMX_STOP)
1058COMPATIBLE_IOCTL(DMX_SET_FILTER)
1059COMPATIBLE_IOCTL(DMX_SET_PES_FILTER)
1060COMPATIBLE_IOCTL(DMX_SET_BUFFER_SIZE)
1061COMPATIBLE_IOCTL(DMX_GET_PES_PIDS)
1062COMPATIBLE_IOCTL(DMX_GET_STC)
1063COMPATIBLE_IOCTL(DMX_REQBUFS)
1064COMPATIBLE_IOCTL(DMX_QUERYBUF)
1065COMPATIBLE_IOCTL(DMX_EXPBUF)
1066COMPATIBLE_IOCTL(DMX_QBUF)
1067COMPATIBLE_IOCTL(DMX_DQBUF)
1068COMPATIBLE_IOCTL(VIDEO_STOP)
1069COMPATIBLE_IOCTL(VIDEO_PLAY)
1070COMPATIBLE_IOCTL(VIDEO_FREEZE)
1071COMPATIBLE_IOCTL(VIDEO_CONTINUE)
1072COMPATIBLE_IOCTL(VIDEO_SELECT_SOURCE)
1073COMPATIBLE_IOCTL(VIDEO_SET_BLANK)
1074COMPATIBLE_IOCTL(VIDEO_GET_STATUS)
1075COMPATIBLE_IOCTL(VIDEO_SET_DISPLAY_FORMAT)
1076COMPATIBLE_IOCTL(VIDEO_FAST_FORWARD)
1077COMPATIBLE_IOCTL(VIDEO_SLOWMOTION)
1078COMPATIBLE_IOCTL(VIDEO_GET_CAPABILITIES)
1079COMPATIBLE_IOCTL(VIDEO_CLEAR_BUFFER)
1080COMPATIBLE_IOCTL(VIDEO_SET_ID)
1081COMPATIBLE_IOCTL(VIDEO_SET_STREAMTYPE)
1082COMPATIBLE_IOCTL(VIDEO_SET_FORMAT)
1083COMPATIBLE_IOCTL(VIDEO_SET_SYSTEM)
1084COMPATIBLE_IOCTL(VIDEO_SET_HIGHLIGHT)
1085COMPATIBLE_IOCTL(VIDEO_SET_SPU)
1086COMPATIBLE_IOCTL(VIDEO_GET_NAVI)
1087COMPATIBLE_IOCTL(VIDEO_SET_ATTRIBUTES)
1088COMPATIBLE_IOCTL(VIDEO_GET_SIZE)
1089COMPATIBLE_IOCTL(VIDEO_GET_FRAME_RATE)
1090
1091/* joystick */
1092COMPATIBLE_IOCTL(JSIOCGVERSION)
1093COMPATIBLE_IOCTL(JSIOCGAXES)
1094COMPATIBLE_IOCTL(JSIOCGBUTTONS)
1095COMPATIBLE_IOCTL(JSIOCGNAME(0))
1096
1097#ifdef TIOCGLTC
1098COMPATIBLE_IOCTL(TIOCGLTC)
1099COMPATIBLE_IOCTL(TIOCSLTC)
1100#endif
1101#ifdef TIOCSTART
1102/*
1103 * For these two we have definitions in ioctls.h and/or termios.h on
1104 * some architectures but no actual implemention.  Some applications
1105 * like bash call them if they are defined in the headers, so we provide
1106 * entries here to avoid syslog message spew.
1107 */
1108COMPATIBLE_IOCTL(TIOCSTART)
1109COMPATIBLE_IOCTL(TIOCSTOP)
1110#endif
1111
1112/* fat 'r' ioctls. These are handled by fat with ->compat_ioctl,
1113   but we don't want warnings on other file systems. So declare
1114   them as compatible here. */
1115#define VFAT_IOCTL_READDIR_BOTH32       _IOR('r', 1, struct compat_dirent[2])
1116#define VFAT_IOCTL_READDIR_SHORT32      _IOR('r', 2, struct compat_dirent[2])
1117
1118IGNORE_IOCTL(VFAT_IOCTL_READDIR_BOTH32)
1119IGNORE_IOCTL(VFAT_IOCTL_READDIR_SHORT32)
1120
1121#ifdef CONFIG_SPARC
1122/* Sparc framebuffers, handled in sbusfb_compat_ioctl() */
1123IGNORE_IOCTL(FBIOGTYPE)
1124IGNORE_IOCTL(FBIOSATTR)
1125IGNORE_IOCTL(FBIOGATTR)
1126IGNORE_IOCTL(FBIOSVIDEO)
1127IGNORE_IOCTL(FBIOGVIDEO)
1128IGNORE_IOCTL(FBIOSCURPOS)
1129IGNORE_IOCTL(FBIOGCURPOS)
1130IGNORE_IOCTL(FBIOGCURMAX)
1131IGNORE_IOCTL(FBIOPUTCMAP32)
1132IGNORE_IOCTL(FBIOGETCMAP32)
1133IGNORE_IOCTL(FBIOSCURSOR32)
1134IGNORE_IOCTL(FBIOGCURSOR32)
1135#endif
1136};
1137
1138/*
1139 * Convert common ioctl arguments based on their command number
1140 *
1141 * Please do not add any code in here. Instead, implement
1142 * a compat_ioctl operation in the place that handleѕ the
1143 * ioctl for the native case.
1144 */
1145static long do_ioctl_trans(unsigned int cmd,
1146                 unsigned long arg, struct file *file)
1147{
1148        void __user *argp = compat_ptr(arg);
1149
1150        switch (cmd) {
1151        case PPPIOCGIDLE32:
1152                return ppp_gidle(file, cmd, argp);
1153        case PPPIOCSCOMPRESS32:
1154                return ppp_scompress(file, cmd, argp);
1155        case PPPIOCSPASS32:
1156        case PPPIOCSACTIVE32:
1157                return ppp_sock_fprog_ioctl_trans(file, cmd, argp);
1158#ifdef CONFIG_BLOCK
1159        case SG_IO:
1160                return sg_ioctl_trans(file, cmd, argp);
1161        case SG_GET_REQUEST_TABLE:
1162                return sg_grt_trans(file, cmd, argp);
1163        case MTIOCGET32:
1164        case MTIOCPOS32:
1165                return mt_ioctl_trans(file, cmd, argp);
1166#endif
1167        /* Serial */
1168        case TIOCGSERIAL:
1169        case TIOCSSERIAL:
1170                return serial_struct_ioctl(file, cmd, argp);
1171
1172        /* dvb */
1173        case VIDEO_GET_EVENT:
1174                return do_video_get_event(file, cmd, argp);
1175        case VIDEO_STILLPICTURE:
1176                return do_video_stillpicture(file, cmd, argp);
1177        case VIDEO_SET_SPU_PALETTE:
1178                return do_video_set_spu_palette(file, cmd, argp);
1179        }
1180
1181        /*
1182         * These take an integer instead of a pointer as 'arg',
1183         * so we must not do a compat_ptr() translation.
1184         */
1185        switch (cmd) {
1186        /* Big T */
1187        case TCSBRKP:
1188        case TIOCMIWAIT:
1189        case TIOCSCTTY:
1190        /* RAID */
1191        case HOT_REMOVE_DISK:
1192        case HOT_ADD_DISK:
1193        case SET_DISK_FAULTY:
1194        case SET_BITMAP_FILE:
1195        /* Big K */
1196        case KDSIGACCEPT:
1197        case KIOCSOUND:
1198        case KDMKTONE:
1199        case KDSETMODE:
1200        case KDSKBMODE:
1201        case KDSKBMETA:
1202        case KDSKBLED:
1203        case KDSETLED:
1204                return vfs_ioctl(file, cmd, arg);
1205        }
1206
1207        return -ENOIOCTLCMD;
1208}
1209
1210static int compat_ioctl_check_table(unsigned int xcmd)
1211{
1212        int i;
1213        const int max = ARRAY_SIZE(ioctl_pointer) - 1;
1214
1215        BUILD_BUG_ON(max >= (1 << 16));
1216
1217        /* guess initial offset into table, assuming a
1218           normalized distribution */
1219        i = ((xcmd >> 16) * max) >> 16;
1220
1221        /* do linear search up first, until greater or equal */
1222        while (ioctl_pointer[i] < xcmd && i < max)
1223                i++;
1224
1225        /* then do linear search down */
1226        while (ioctl_pointer[i] > xcmd && i > 0)
1227                i--;
1228
1229        return ioctl_pointer[i] == xcmd;
1230}
1231
1232COMPAT_SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd,
1233                       compat_ulong_t, arg32)
1234{
1235        unsigned long arg = arg32;
1236        struct fd f = fdget(fd);
1237        int error = -EBADF;
1238        if (!f.file)
1239                goto out;
1240
1241        /* RED-PEN how should LSM module know it's handling 32bit? */
1242        error = security_file_ioctl(f.file, cmd, arg);
1243        if (error)
1244                goto out_fput;
1245
1246        switch (cmd) {
1247        /* these are never seen by ->ioctl(), no argument or int argument */
1248        case FIOCLEX:
1249        case FIONCLEX:
1250        case FIFREEZE:
1251        case FITHAW:
1252        case FICLONE:
1253                goto do_ioctl;
1254        /* these are never seen by ->ioctl(), pointer argument */
1255        case FIONBIO:
1256        case FIOASYNC:
1257        case FIOQSIZE:
1258        case FS_IOC_FIEMAP:
1259        case FIGETBSZ:
1260        case FICLONERANGE:
1261        case FIDEDUPERANGE:
1262                goto found_handler;
1263        /*
1264         * The next group is the stuff handled inside file_ioctl().
1265         * For regular files these never reach ->ioctl(); for
1266         * devices, sockets, etc. they do and one (FIONREAD) is
1267         * even accepted in some cases.  In all those cases
1268         * argument has the same type, so we can handle these
1269         * here, shunting them towards do_vfs_ioctl().
1270         * ->compat_ioctl() will never see any of those.
1271         */
1272        /* pointer argument, never actually handled by ->ioctl() */
1273        case FIBMAP:
1274                goto found_handler;
1275        /* handled by some ->ioctl(); always a pointer to int */
1276        case FIONREAD:
1277                goto found_handler;
1278        /* these two get messy on amd64 due to alignment differences */
1279#if defined(CONFIG_X86_64)
1280        case FS_IOC_RESVSP_32:
1281        case FS_IOC_RESVSP64_32:
1282                error = compat_ioctl_preallocate(f.file, compat_ptr(arg));
1283                goto out_fput;
1284#else
1285        case FS_IOC_RESVSP:
1286        case FS_IOC_RESVSP64:
1287                goto found_handler;
1288#endif
1289
1290        default:
1291                if (f.file->f_op->compat_ioctl) {
1292                        error = f.file->f_op->compat_ioctl(f.file, cmd, arg);
1293                        if (error != -ENOIOCTLCMD)
1294                                goto out_fput;
1295                }
1296
1297                if (!f.file->f_op->unlocked_ioctl)
1298                        goto do_ioctl;
1299                break;
1300        }
1301
1302        if (compat_ioctl_check_table(XFORM(cmd)))
1303                goto found_handler;
1304
1305        error = do_ioctl_trans(cmd, arg, f.file);
1306        if (error == -ENOIOCTLCMD)
1307                error = -ENOTTY;
1308
1309        goto out_fput;
1310
1311 found_handler:
1312        arg = (unsigned long)compat_ptr(arg);
1313 do_ioctl:
1314        error = do_vfs_ioctl(f.file, fd, cmd, arg);
1315 out_fput:
1316        fdput(f);
1317 out:
1318        return error;
1319}
1320
1321static int __init init_sys32_ioctl_cmp(const void *p, const void *q)
1322{
1323        unsigned int a, b;
1324        a = *(unsigned int *)p;
1325        b = *(unsigned int *)q;
1326        if (a > b)
1327                return 1;
1328        if (a < b)
1329                return -1;
1330        return 0;
1331}
1332
1333static int __init init_sys32_ioctl(void)
1334{
1335        sort(ioctl_pointer, ARRAY_SIZE(ioctl_pointer), sizeof(*ioctl_pointer),
1336                init_sys32_ioctl_cmp, NULL);
1337        return 0;
1338}
1339__initcall(init_sys32_ioctl);
1340