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/rtc.h>
  50#include <linux/pci.h>
  51#include <linux/serial.h>
  52#include <linux/if_tun.h>
  53#include <linux/ctype.h>
  54#include <linux/syscalls.h>
  55#include <linux/atalk.h>
  56#include <linux/gfp.h>
  57#include <linux/cec.h>
  58
  59#include "internal.h"
  60
  61#include <net/bluetooth/bluetooth.h>
  62#include <net/bluetooth/hci_sock.h>
  63#include <net/bluetooth/rfcomm.h>
  64
  65#include <linux/capi.h>
  66#include <linux/gigaset_dev.h>
  67
  68#ifdef CONFIG_BLOCK
  69#include <linux/cdrom.h>
  70#include <linux/fd.h>
  71#include <scsi/scsi.h>
  72#include <scsi/scsi_ioctl.h>
  73#include <scsi/sg.h>
  74#endif
  75
  76#include <linux/uaccess.h>
  77#include <linux/ethtool.h>
  78#include <linux/mii.h>
  79#include <linux/if_bonding.h>
  80#include <linux/watchdog.h>
  81
  82#include <linux/soundcard.h>
  83#include <linux/lp.h>
  84#include <linux/ppdev.h>
  85
  86#include <linux/atm.h>
  87#include <linux/atmarp.h>
  88#include <linux/atmclip.h>
  89#include <linux/atmdev.h>
  90#include <linux/atmioc.h>
  91#include <linux/atmlec.h>
  92#include <linux/atmmpc.h>
  93#include <linux/atmsvc.h>
  94#include <linux/atm_tcp.h>
  95#include <linux/sonet.h>
  96#include <linux/atm_suni.h>
  97
  98#include <linux/usb.h>
  99#include <linux/usbdevice_fs.h>
 100#include <linux/nbd.h>
 101#include <linux/random.h>
 102#include <linux/filter.h>
 103
 104#include <linux/hiddev.h>
 105
 106#define __DVB_CORE__
 107#include <linux/dvb/audio.h>
 108#include <linux/dvb/dmx.h>
 109#include <linux/dvb/frontend.h>
 110#include <linux/dvb/video.h>
 111
 112#include <linux/sort.h>
 113
 114#ifdef CONFIG_SPARC
 115#include <asm/fbio.h>
 116#endif
 117
 118#define convert_in_user(srcptr, dstptr)                 \
 119({                                                      \
 120        typeof(*srcptr) val;                            \
 121                                                        \
 122        get_user(val, srcptr) || put_user(val, dstptr); \
 123})
 124
 125static int do_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 126{
 127        int err;
 128
 129        err = security_file_ioctl(file, cmd, arg);
 130        if (err)
 131                return err;
 132
 133        return vfs_ioctl(file, cmd, arg);
 134}
 135
 136struct compat_video_event {
 137        int32_t         type;
 138        compat_time_t   timestamp;
 139        union {
 140                video_size_t size;
 141                unsigned int frame_rate;
 142        } u;
 143};
 144
 145static int do_video_get_event(struct file *file,
 146                unsigned int cmd, struct compat_video_event __user *up)
 147{
 148        struct video_event __user *kevent =
 149                compat_alloc_user_space(sizeof(*kevent));
 150        int err;
 151
 152        if (kevent == NULL)
 153                return -EFAULT;
 154
 155        err = do_ioctl(file, cmd, (unsigned long)kevent);
 156        if (!err) {
 157                err  = convert_in_user(&kevent->type, &up->type);
 158                err |= convert_in_user(&kevent->timestamp, &up->timestamp);
 159                err |= convert_in_user(&kevent->u.size.w, &up->u.size.w);
 160                err |= convert_in_user(&kevent->u.size.h, &up->u.size.h);
 161                err |= convert_in_user(&kevent->u.size.aspect_ratio,
 162                                &up->u.size.aspect_ratio);
 163                if (err)
 164                        err = -EFAULT;
 165        }
 166
 167        return err;
 168}
 169
 170struct compat_video_still_picture {
 171        compat_uptr_t iFrame;
 172        int32_t size;
 173};
 174
 175static int do_video_stillpicture(struct file *file,
 176                unsigned int cmd, struct compat_video_still_picture __user *up)
 177{
 178        struct video_still_picture __user *up_native;
 179        compat_uptr_t fp;
 180        int32_t size;
 181        int err;
 182
 183        err  = get_user(fp, &up->iFrame);
 184        err |= get_user(size, &up->size);
 185        if (err)
 186                return -EFAULT;
 187
 188        up_native =
 189                compat_alloc_user_space(sizeof(struct video_still_picture));
 190
 191        err =  put_user(compat_ptr(fp), &up_native->iFrame);
 192        err |= put_user(size, &up_native->size);
 193        if (err)
 194                return -EFAULT;
 195
 196        err = do_ioctl(file, cmd, (unsigned long) up_native);
 197
 198        return err;
 199}
 200
 201struct compat_video_spu_palette {
 202        int length;
 203        compat_uptr_t palette;
 204};
 205
 206static int do_video_set_spu_palette(struct file *file,
 207                unsigned int cmd, struct compat_video_spu_palette __user *up)
 208{
 209        struct video_spu_palette __user *up_native;
 210        compat_uptr_t palp;
 211        int length, err;
 212
 213        err  = get_user(palp, &up->palette);
 214        err |= get_user(length, &up->length);
 215        if (err)
 216                return -EFAULT;
 217
 218        up_native = compat_alloc_user_space(sizeof(struct video_spu_palette));
 219        err  = put_user(compat_ptr(palp), &up_native->palette);
 220        err |= put_user(length, &up_native->length);
 221        if (err)
 222                return -EFAULT;
 223
 224        err = do_ioctl(file, cmd, (unsigned long) up_native);
 225
 226        return err;
 227}
 228
 229#ifdef CONFIG_BLOCK
 230typedef struct sg_io_hdr32 {
 231        compat_int_t interface_id;      /* [i] 'S' for SCSI generic (required) */
 232        compat_int_t dxfer_direction;   /* [i] data transfer direction  */
 233        unsigned char cmd_len;          /* [i] SCSI command length ( <= 16 bytes) */
 234        unsigned char mx_sb_len;                /* [i] max length to write to sbp */
 235        unsigned short iovec_count;     /* [i] 0 implies no scatter gather */
 236        compat_uint_t dxfer_len;                /* [i] byte count of data transfer */
 237        compat_uint_t dxferp;           /* [i], [*io] points to data transfer memory
 238                                              or scatter gather list */
 239        compat_uptr_t cmdp;             /* [i], [*i] points to command to perform */
 240        compat_uptr_t sbp;              /* [i], [*o] points to sense_buffer memory */
 241        compat_uint_t timeout;          /* [i] MAX_UINT->no timeout (unit: millisec) */
 242        compat_uint_t flags;            /* [i] 0 -> default, see SG_FLAG... */
 243        compat_int_t pack_id;           /* [i->o] unused internally (normally) */
 244        compat_uptr_t usr_ptr;          /* [i->o] unused internally */
 245        unsigned char status;           /* [o] scsi status */
 246        unsigned char masked_status;    /* [o] shifted, masked scsi status */
 247        unsigned char msg_status;               /* [o] messaging level data (optional) */
 248        unsigned char sb_len_wr;                /* [o] byte count actually written to sbp */
 249        unsigned short host_status;     /* [o] errors from host adapter */
 250        unsigned short driver_status;   /* [o] errors from software driver */
 251        compat_int_t resid;             /* [o] dxfer_len - actual_transferred */
 252        compat_uint_t duration;         /* [o] time taken by cmd (unit: millisec) */
 253        compat_uint_t info;             /* [o] auxiliary information */
 254} sg_io_hdr32_t;  /* 64 bytes long (on sparc32) */
 255
 256typedef struct sg_iovec32 {
 257        compat_uint_t iov_base;
 258        compat_uint_t iov_len;
 259} sg_iovec32_t;
 260
 261static int sg_build_iovec(sg_io_hdr_t __user *sgio, void __user *dxferp, u16 iovec_count)
 262{
 263        sg_iovec_t __user *iov = (sg_iovec_t __user *) (sgio + 1);
 264        sg_iovec32_t __user *iov32 = dxferp;
 265        int i;
 266
 267        for (i = 0; i < iovec_count; i++) {
 268                u32 base, len;
 269
 270                if (get_user(base, &iov32[i].iov_base) ||
 271                    get_user(len, &iov32[i].iov_len) ||
 272                    put_user(compat_ptr(base), &iov[i].iov_base) ||
 273                    put_user(len, &iov[i].iov_len))
 274                        return -EFAULT;
 275        }
 276
 277        if (put_user(iov, &sgio->dxferp))
 278                return -EFAULT;
 279        return 0;
 280}
 281
 282static int sg_ioctl_trans(struct file *file, unsigned int cmd,
 283                        sg_io_hdr32_t __user *sgio32)
 284{
 285        sg_io_hdr_t __user *sgio;
 286        u16 iovec_count;
 287        u32 data;
 288        void __user *dxferp;
 289        int err;
 290        int interface_id;
 291
 292        if (get_user(interface_id, &sgio32->interface_id))
 293                return -EFAULT;
 294        if (interface_id != 'S')
 295                return do_ioctl(file, cmd, (unsigned long)sgio32);
 296
 297        if (get_user(iovec_count, &sgio32->iovec_count))
 298                return -EFAULT;
 299
 300        {
 301                void __user *top = compat_alloc_user_space(0);
 302                void __user *new = compat_alloc_user_space(sizeof(sg_io_hdr_t) +
 303                                       (iovec_count * sizeof(sg_iovec_t)));
 304                if (new > top)
 305                        return -EINVAL;
 306
 307                sgio = new;
 308        }
 309
 310        /* Ok, now construct.  */
 311        if (copy_in_user(&sgio->interface_id, &sgio32->interface_id,
 312                         (2 * sizeof(int)) +
 313                         (2 * sizeof(unsigned char)) +
 314                         (1 * sizeof(unsigned short)) +
 315                         (1 * sizeof(unsigned int))))
 316                return -EFAULT;
 317
 318        if (get_user(data, &sgio32->dxferp))
 319                return -EFAULT;
 320        dxferp = compat_ptr(data);
 321        if (iovec_count) {
 322                if (sg_build_iovec(sgio, dxferp, iovec_count))
 323                        return -EFAULT;
 324        } else {
 325                if (put_user(dxferp, &sgio->dxferp))
 326                        return -EFAULT;
 327        }
 328
 329        {
 330                unsigned char __user *cmdp;
 331                unsigned char __user *sbp;
 332
 333                if (get_user(data, &sgio32->cmdp))
 334                        return -EFAULT;
 335                cmdp = compat_ptr(data);
 336
 337                if (get_user(data, &sgio32->sbp))
 338                        return -EFAULT;
 339                sbp = compat_ptr(data);
 340
 341                if (put_user(cmdp, &sgio->cmdp) ||
 342                    put_user(sbp, &sgio->sbp))
 343                        return -EFAULT;
 344        }
 345
 346        if (copy_in_user(&sgio->timeout, &sgio32->timeout,
 347                         3 * sizeof(int)))
 348                return -EFAULT;
 349
 350        if (get_user(data, &sgio32->usr_ptr))
 351                return -EFAULT;
 352        if (put_user(compat_ptr(data), &sgio->usr_ptr))
 353                return -EFAULT;
 354
 355        err = do_ioctl(file, cmd, (unsigned long) sgio);
 356
 357        if (err >= 0) {
 358                void __user *datap;
 359
 360                if (copy_in_user(&sgio32->pack_id, &sgio->pack_id,
 361                                 sizeof(int)) ||
 362                    get_user(datap, &sgio->usr_ptr) ||
 363                    put_user((u32)(unsigned long)datap,
 364                             &sgio32->usr_ptr) ||
 365                    copy_in_user(&sgio32->status, &sgio->status,
 366                                 (4 * sizeof(unsigned char)) +
 367                                 (2 * sizeof(unsigned short)) +
 368                                 (3 * sizeof(int))))
 369                        err = -EFAULT;
 370        }
 371
 372        return err;
 373}
 374
 375struct compat_sg_req_info { /* used by SG_GET_REQUEST_TABLE ioctl() */
 376        char req_state;
 377        char orphan;
 378        char sg_io_owned;
 379        char problem;
 380        int pack_id;
 381        compat_uptr_t usr_ptr;
 382        unsigned int duration;
 383        int unused;
 384};
 385
 386static int sg_grt_trans(struct file *file,
 387                unsigned int cmd, struct compat_sg_req_info __user *o)
 388{
 389        int err, i;
 390        sg_req_info_t __user *r;
 391        r = compat_alloc_user_space(sizeof(sg_req_info_t)*SG_MAX_QUEUE);
 392        err = do_ioctl(file, cmd, (unsigned long)r);
 393        if (err < 0)
 394                return err;
 395        for (i = 0; i < SG_MAX_QUEUE; i++) {
 396                void __user *ptr;
 397                int d;
 398
 399                if (copy_in_user(o + i, r + i, offsetof(sg_req_info_t, usr_ptr)) ||
 400                    get_user(ptr, &r[i].usr_ptr) ||
 401                    get_user(d, &r[i].duration) ||
 402                    put_user((u32)(unsigned long)(ptr), &o[i].usr_ptr) ||
 403                    put_user(d, &o[i].duration))
 404                        return -EFAULT;
 405        }
 406        return err;
 407}
 408#endif /* CONFIG_BLOCK */
 409
 410struct sock_fprog32 {
 411        unsigned short  len;
 412        compat_caddr_t  filter;
 413};
 414
 415#define PPPIOCSPASS32   _IOW('t', 71, struct sock_fprog32)
 416#define PPPIOCSACTIVE32 _IOW('t', 70, struct sock_fprog32)
 417
 418static int ppp_sock_fprog_ioctl_trans(struct file *file,
 419                unsigned int cmd, struct sock_fprog32 __user *u_fprog32)
 420{
 421        struct sock_fprog __user *u_fprog64 = compat_alloc_user_space(sizeof(struct sock_fprog));
 422        void __user *fptr64;
 423        u32 fptr32;
 424        u16 flen;
 425
 426        if (get_user(flen, &u_fprog32->len) ||
 427            get_user(fptr32, &u_fprog32->filter))
 428                return -EFAULT;
 429
 430        fptr64 = compat_ptr(fptr32);
 431
 432        if (put_user(flen, &u_fprog64->len) ||
 433            put_user(fptr64, &u_fprog64->filter))
 434                return -EFAULT;
 435
 436        if (cmd == PPPIOCSPASS32)
 437                cmd = PPPIOCSPASS;
 438        else
 439                cmd = PPPIOCSACTIVE;
 440
 441        return do_ioctl(file, cmd, (unsigned long) u_fprog64);
 442}
 443
 444struct ppp_option_data32 {
 445        compat_caddr_t  ptr;
 446        u32                     length;
 447        compat_int_t            transmit;
 448};
 449#define PPPIOCSCOMPRESS32       _IOW('t', 77, struct ppp_option_data32)
 450
 451struct ppp_idle32 {
 452        compat_time_t xmit_idle;
 453        compat_time_t recv_idle;
 454};
 455#define PPPIOCGIDLE32           _IOR('t', 63, struct ppp_idle32)
 456
 457static int ppp_gidle(struct file *file, unsigned int cmd,
 458                struct ppp_idle32 __user *idle32)
 459{
 460        struct ppp_idle __user *idle;
 461        __kernel_time_t xmit, recv;
 462        int err;
 463
 464        idle = compat_alloc_user_space(sizeof(*idle));
 465
 466        err = do_ioctl(file, PPPIOCGIDLE, (unsigned long) idle);
 467
 468        if (!err) {
 469                if (get_user(xmit, &idle->xmit_idle) ||
 470                    get_user(recv, &idle->recv_idle) ||
 471                    put_user(xmit, &idle32->xmit_idle) ||
 472                    put_user(recv, &idle32->recv_idle))
 473                        err = -EFAULT;
 474        }
 475        return err;
 476}
 477
 478static int ppp_scompress(struct file *file, unsigned int cmd,
 479        struct ppp_option_data32 __user *odata32)
 480{
 481        struct ppp_option_data __user *odata;
 482        __u32 data;
 483        void __user *datap;
 484
 485        odata = compat_alloc_user_space(sizeof(*odata));
 486
 487        if (get_user(data, &odata32->ptr))
 488                return -EFAULT;
 489
 490        datap = compat_ptr(data);
 491        if (put_user(datap, &odata->ptr))
 492                return -EFAULT;
 493
 494        if (copy_in_user(&odata->length, &odata32->length,
 495                         sizeof(__u32) + sizeof(int)))
 496                return -EFAULT;
 497
 498        return do_ioctl(file, PPPIOCSCOMPRESS, (unsigned long) odata);
 499}
 500
 501#ifdef CONFIG_BLOCK
 502struct mtget32 {
 503        compat_long_t   mt_type;
 504        compat_long_t   mt_resid;
 505        compat_long_t   mt_dsreg;
 506        compat_long_t   mt_gstat;
 507        compat_long_t   mt_erreg;
 508        compat_daddr_t  mt_fileno;
 509        compat_daddr_t  mt_blkno;
 510};
 511#define MTIOCGET32      _IOR('m', 2, struct mtget32)
 512
 513struct mtpos32 {
 514        compat_long_t   mt_blkno;
 515};
 516#define MTIOCPOS32      _IOR('m', 3, struct mtpos32)
 517
 518static int mt_ioctl_trans(struct file *file,
 519                unsigned int cmd, void __user *argp)
 520{
 521        /* NULL initialization to make gcc shut up */
 522        struct mtget __user *get = NULL;
 523        struct mtget32 __user *umget32;
 524        struct mtpos __user *pos = NULL;
 525        struct mtpos32 __user *upos32;
 526        unsigned long kcmd;
 527        void *karg;
 528        int err = 0;
 529
 530        switch(cmd) {
 531        case MTIOCPOS32:
 532                kcmd = MTIOCPOS;
 533                pos = compat_alloc_user_space(sizeof(*pos));
 534                karg = pos;
 535                break;
 536        default:        /* MTIOCGET32 */
 537                kcmd = MTIOCGET;
 538                get = compat_alloc_user_space(sizeof(*get));
 539                karg = get;
 540                break;
 541        }
 542        if (karg == NULL)
 543                return -EFAULT;
 544        err = do_ioctl(file, kcmd, (unsigned long)karg);
 545        if (err)
 546                return err;
 547        switch (cmd) {
 548        case MTIOCPOS32:
 549                upos32 = argp;
 550                err = convert_in_user(&pos->mt_blkno, &upos32->mt_blkno);
 551                break;
 552        case MTIOCGET32:
 553                umget32 = argp;
 554                err = convert_in_user(&get->mt_type, &umget32->mt_type);
 555                err |= convert_in_user(&get->mt_resid, &umget32->mt_resid);
 556                err |= convert_in_user(&get->mt_dsreg, &umget32->mt_dsreg);
 557                err |= convert_in_user(&get->mt_gstat, &umget32->mt_gstat);
 558                err |= convert_in_user(&get->mt_erreg, &umget32->mt_erreg);
 559                err |= convert_in_user(&get->mt_fileno, &umget32->mt_fileno);
 560                err |= convert_in_user(&get->mt_blkno, &umget32->mt_blkno);
 561                break;
 562        }
 563        return err ? -EFAULT: 0;
 564}
 565
 566#endif /* CONFIG_BLOCK */
 567
 568/* Bluetooth ioctls */
 569#define HCIUARTSETPROTO         _IOW('U', 200, int)
 570#define HCIUARTGETPROTO         _IOR('U', 201, int)
 571#define HCIUARTGETDEVICE        _IOR('U', 202, int)
 572#define HCIUARTSETFLAGS         _IOW('U', 203, int)
 573#define HCIUARTGETFLAGS         _IOR('U', 204, int)
 574
 575#define BNEPCONNADD     _IOW('B', 200, int)
 576#define BNEPCONNDEL     _IOW('B', 201, int)
 577#define BNEPGETCONNLIST _IOR('B', 210, int)
 578#define BNEPGETCONNINFO _IOR('B', 211, int)
 579#define BNEPGETSUPPFEAT _IOR('B', 212, int)
 580
 581#define CMTPCONNADD     _IOW('C', 200, int)
 582#define CMTPCONNDEL     _IOW('C', 201, int)
 583#define CMTPGETCONNLIST _IOR('C', 210, int)
 584#define CMTPGETCONNINFO _IOR('C', 211, int)
 585
 586#define HIDPCONNADD     _IOW('H', 200, int)
 587#define HIDPCONNDEL     _IOW('H', 201, int)
 588#define HIDPGETCONNLIST _IOR('H', 210, int)
 589#define HIDPGETCONNINFO _IOR('H', 211, int)
 590
 591
 592struct serial_struct32 {
 593        compat_int_t    type;
 594        compat_int_t    line;
 595        compat_uint_t   port;
 596        compat_int_t    irq;
 597        compat_int_t    flags;
 598        compat_int_t    xmit_fifo_size;
 599        compat_int_t    custom_divisor;
 600        compat_int_t    baud_base;
 601        unsigned short  close_delay;
 602        char    io_type;
 603        char    reserved_char[1];
 604        compat_int_t    hub6;
 605        unsigned short  closing_wait; /* time to wait before closing */
 606        unsigned short  closing_wait2; /* no longer used... */
 607        compat_uint_t   iomem_base;
 608        unsigned short  iomem_reg_shift;
 609        unsigned int    port_high;
 610     /* compat_ulong_t  iomap_base FIXME */
 611        compat_int_t    reserved[1];
 612};
 613
 614static int serial_struct_ioctl(struct file *file,
 615                unsigned cmd, struct serial_struct32 __user *ss32)
 616{
 617        typedef struct serial_struct32 SS32;
 618        int err;
 619        struct serial_struct __user *ss = compat_alloc_user_space(sizeof(*ss));
 620        __u32 udata;
 621        unsigned int base;
 622        unsigned char *iomem_base;
 623
 624        if (ss == NULL)
 625                return -EFAULT;
 626        if (cmd == TIOCSSERIAL) {
 627                if (copy_in_user(ss, ss32, offsetof(SS32, iomem_base)) ||
 628                    get_user(udata, &ss32->iomem_base))
 629                        return -EFAULT;
 630                iomem_base = compat_ptr(udata);
 631                if (put_user(iomem_base, &ss->iomem_base) ||
 632                    convert_in_user(&ss32->iomem_reg_shift,
 633                      &ss->iomem_reg_shift) ||
 634                    convert_in_user(&ss32->port_high, &ss->port_high) ||
 635                    put_user(0UL, &ss->iomap_base))
 636                        return -EFAULT;
 637        }
 638        err = do_ioctl(file, cmd, (unsigned long)ss);
 639        if (cmd == TIOCGSERIAL && err >= 0) {
 640                if (copy_in_user(ss32, ss, offsetof(SS32, iomem_base)) ||
 641                    get_user(iomem_base, &ss->iomem_base))
 642                        return -EFAULT;
 643                base = (unsigned long)iomem_base  >> 32 ?
 644                        0xffffffff : (unsigned)(unsigned long)iomem_base;
 645                if (put_user(base, &ss32->iomem_base) ||
 646                    convert_in_user(&ss->iomem_reg_shift,
 647                      &ss32->iomem_reg_shift) ||
 648                    convert_in_user(&ss->port_high, &ss32->port_high))
 649                        return -EFAULT;
 650        }
 651        return err;
 652}
 653
 654#define RTC_IRQP_READ32         _IOR('p', 0x0b, compat_ulong_t)
 655#define RTC_IRQP_SET32          _IOW('p', 0x0c, compat_ulong_t)
 656#define RTC_EPOCH_READ32        _IOR('p', 0x0d, compat_ulong_t)
 657#define RTC_EPOCH_SET32         _IOW('p', 0x0e, compat_ulong_t)
 658
 659static int rtc_ioctl(struct file *file,
 660                unsigned cmd, void __user *argp)
 661{
 662        unsigned long __user *valp = compat_alloc_user_space(sizeof(*valp));
 663        int ret;
 664
 665        if (valp == NULL)
 666                return -EFAULT;
 667        switch (cmd) {
 668        case RTC_IRQP_READ32:
 669        case RTC_EPOCH_READ32:
 670                ret = do_ioctl(file, (cmd == RTC_IRQP_READ32) ?
 671                                        RTC_IRQP_READ : RTC_EPOCH_READ,
 672                                        (unsigned long)valp);
 673                if (ret)
 674                        return ret;
 675                return convert_in_user(valp, (unsigned int __user *)argp);
 676        case RTC_IRQP_SET32:
 677                return do_ioctl(file, RTC_IRQP_SET, (unsigned long)argp);
 678        case RTC_EPOCH_SET32:
 679                return do_ioctl(file, RTC_EPOCH_SET, (unsigned long)argp);
 680        }
 681
 682        return -ENOIOCTLCMD;
 683}
 684
 685/* on ia32 l_start is on a 32-bit boundary */
 686#if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
 687struct space_resv_32 {
 688        __s16           l_type;
 689        __s16           l_whence;
 690        __s64           l_start __attribute__((packed));
 691                        /* len == 0 means until end of file */
 692        __s64           l_len __attribute__((packed));
 693        __s32           l_sysid;
 694        __u32           l_pid;
 695        __s32           l_pad[4];       /* reserve area */
 696};
 697
 698#define FS_IOC_RESVSP_32                _IOW ('X', 40, struct space_resv_32)
 699#define FS_IOC_RESVSP64_32      _IOW ('X', 42, struct space_resv_32)
 700
 701/* just account for different alignment */
 702static int compat_ioctl_preallocate(struct file *file,
 703                        struct space_resv_32    __user *p32)
 704{
 705        struct space_resv       __user *p = compat_alloc_user_space(sizeof(*p));
 706
 707        if (copy_in_user(&p->l_type,    &p32->l_type,   sizeof(s16)) ||
 708            copy_in_user(&p->l_whence,  &p32->l_whence, sizeof(s16)) ||
 709            copy_in_user(&p->l_start,   &p32->l_start,  sizeof(s64)) ||
 710            copy_in_user(&p->l_len,     &p32->l_len,    sizeof(s64)) ||
 711            copy_in_user(&p->l_sysid,   &p32->l_sysid,  sizeof(s32)) ||
 712            copy_in_user(&p->l_pid,     &p32->l_pid,    sizeof(u32)) ||
 713            copy_in_user(&p->l_pad,     &p32->l_pad,    4*sizeof(u32)))
 714                return -EFAULT;
 715
 716        return ioctl_preallocate(file, p);
 717}
 718#endif
 719
 720/*
 721 * simple reversible transform to make our table more evenly
 722 * distributed after sorting.
 723 */
 724#define XFORM(i) (((i) ^ ((i) << 27) ^ ((i) << 17)) & 0xffffffff)
 725
 726#define COMPATIBLE_IOCTL(cmd) XFORM((u32)cmd),
 727/* ioctl should not be warned about even if it's not implemented.
 728   Valid reasons to use this:
 729   - It is implemented with ->compat_ioctl on some device, but programs
 730   call it on others too.
 731   - The ioctl is not implemented in the native kernel, but programs
 732   call it commonly anyways.
 733   Most other reasons are not valid. */
 734#define IGNORE_IOCTL(cmd) COMPATIBLE_IOCTL(cmd)
 735
 736static unsigned int ioctl_pointer[] = {
 737/* compatible ioctls first */
 738COMPATIBLE_IOCTL(0x4B50)   /* KDGHWCLK - not in the kernel, but don't complain */
 739COMPATIBLE_IOCTL(0x4B51)   /* KDSHWCLK - not in the kernel, but don't complain */
 740
 741/* Big T */
 742COMPATIBLE_IOCTL(TCGETA)
 743COMPATIBLE_IOCTL(TCSETA)
 744COMPATIBLE_IOCTL(TCSETAW)
 745COMPATIBLE_IOCTL(TCSETAF)
 746COMPATIBLE_IOCTL(TCSBRK)
 747COMPATIBLE_IOCTL(TCXONC)
 748COMPATIBLE_IOCTL(TCFLSH)
 749COMPATIBLE_IOCTL(TCGETS)
 750COMPATIBLE_IOCTL(TCSETS)
 751COMPATIBLE_IOCTL(TCSETSW)
 752COMPATIBLE_IOCTL(TCSETSF)
 753COMPATIBLE_IOCTL(TIOCLINUX)
 754COMPATIBLE_IOCTL(TIOCSBRK)
 755COMPATIBLE_IOCTL(TIOCGDEV)
 756COMPATIBLE_IOCTL(TIOCCBRK)
 757COMPATIBLE_IOCTL(TIOCGSID)
 758COMPATIBLE_IOCTL(TIOCGICOUNT)
 759COMPATIBLE_IOCTL(TIOCGEXCL)
 760/* Little t */
 761COMPATIBLE_IOCTL(TIOCGETD)
 762COMPATIBLE_IOCTL(TIOCSETD)
 763COMPATIBLE_IOCTL(TIOCEXCL)
 764COMPATIBLE_IOCTL(TIOCNXCL)
 765COMPATIBLE_IOCTL(TIOCCONS)
 766COMPATIBLE_IOCTL(TIOCGSOFTCAR)
 767COMPATIBLE_IOCTL(TIOCSSOFTCAR)
 768COMPATIBLE_IOCTL(TIOCSWINSZ)
 769COMPATIBLE_IOCTL(TIOCGWINSZ)
 770COMPATIBLE_IOCTL(TIOCMGET)
 771COMPATIBLE_IOCTL(TIOCMBIC)
 772COMPATIBLE_IOCTL(TIOCMBIS)
 773COMPATIBLE_IOCTL(TIOCMSET)
 774COMPATIBLE_IOCTL(TIOCNOTTY)
 775COMPATIBLE_IOCTL(TIOCSTI)
 776COMPATIBLE_IOCTL(TIOCOUTQ)
 777COMPATIBLE_IOCTL(TIOCSPGRP)
 778COMPATIBLE_IOCTL(TIOCGPGRP)
 779COMPATIBLE_IOCTL(TIOCSERGETLSR)
 780#ifdef TIOCSRS485
 781COMPATIBLE_IOCTL(TIOCSRS485)
 782#endif
 783#ifdef TIOCGRS485
 784COMPATIBLE_IOCTL(TIOCGRS485)
 785#endif
 786#ifdef TCGETS2
 787COMPATIBLE_IOCTL(TCGETS2)
 788COMPATIBLE_IOCTL(TCSETS2)
 789COMPATIBLE_IOCTL(TCSETSW2)
 790COMPATIBLE_IOCTL(TCSETSF2)
 791#endif
 792/* Little f */
 793COMPATIBLE_IOCTL(FIOCLEX)
 794COMPATIBLE_IOCTL(FIONCLEX)
 795COMPATIBLE_IOCTL(FIOASYNC)
 796COMPATIBLE_IOCTL(FIONBIO)
 797COMPATIBLE_IOCTL(FIONREAD)  /* This is also TIOCINQ */
 798COMPATIBLE_IOCTL(FS_IOC_FIEMAP)
 799/* 0x00 */
 800COMPATIBLE_IOCTL(FIBMAP)
 801COMPATIBLE_IOCTL(FIGETBSZ)
 802/* 'X' - originally XFS but some now in the VFS */
 803COMPATIBLE_IOCTL(FIFREEZE)
 804COMPATIBLE_IOCTL(FITHAW)
 805COMPATIBLE_IOCTL(FITRIM)
 806COMPATIBLE_IOCTL(KDGETKEYCODE)
 807COMPATIBLE_IOCTL(KDSETKEYCODE)
 808COMPATIBLE_IOCTL(KDGKBTYPE)
 809COMPATIBLE_IOCTL(KDGETMODE)
 810COMPATIBLE_IOCTL(KDGKBMODE)
 811COMPATIBLE_IOCTL(KDGKBMETA)
 812COMPATIBLE_IOCTL(KDGKBENT)
 813COMPATIBLE_IOCTL(KDSKBENT)
 814COMPATIBLE_IOCTL(KDGKBSENT)
 815COMPATIBLE_IOCTL(KDSKBSENT)
 816COMPATIBLE_IOCTL(KDGKBDIACR)
 817COMPATIBLE_IOCTL(KDSKBDIACR)
 818COMPATIBLE_IOCTL(KDGKBDIACRUC)
 819COMPATIBLE_IOCTL(KDSKBDIACRUC)
 820COMPATIBLE_IOCTL(KDKBDREP)
 821COMPATIBLE_IOCTL(KDGKBLED)
 822COMPATIBLE_IOCTL(KDGETLED)
 823#ifdef CONFIG_BLOCK
 824/* Big S */
 825COMPATIBLE_IOCTL(SCSI_IOCTL_GET_IDLUN)
 826COMPATIBLE_IOCTL(SCSI_IOCTL_DOORLOCK)
 827COMPATIBLE_IOCTL(SCSI_IOCTL_DOORUNLOCK)
 828COMPATIBLE_IOCTL(SCSI_IOCTL_TEST_UNIT_READY)
 829COMPATIBLE_IOCTL(SCSI_IOCTL_GET_BUS_NUMBER)
 830COMPATIBLE_IOCTL(SCSI_IOCTL_SEND_COMMAND)
 831COMPATIBLE_IOCTL(SCSI_IOCTL_PROBE_HOST)
 832COMPATIBLE_IOCTL(SCSI_IOCTL_GET_PCI)
 833#endif
 834/* Big V (don't complain on serial console) */
 835IGNORE_IOCTL(VT_OPENQRY)
 836IGNORE_IOCTL(VT_GETMODE)
 837/* Little p (/dev/rtc, /dev/envctrl, etc.) */
 838COMPATIBLE_IOCTL(RTC_AIE_ON)
 839COMPATIBLE_IOCTL(RTC_AIE_OFF)
 840COMPATIBLE_IOCTL(RTC_UIE_ON)
 841COMPATIBLE_IOCTL(RTC_UIE_OFF)
 842COMPATIBLE_IOCTL(RTC_PIE_ON)
 843COMPATIBLE_IOCTL(RTC_PIE_OFF)
 844COMPATIBLE_IOCTL(RTC_WIE_ON)
 845COMPATIBLE_IOCTL(RTC_WIE_OFF)
 846COMPATIBLE_IOCTL(RTC_ALM_SET)
 847COMPATIBLE_IOCTL(RTC_ALM_READ)
 848COMPATIBLE_IOCTL(RTC_RD_TIME)
 849COMPATIBLE_IOCTL(RTC_SET_TIME)
 850COMPATIBLE_IOCTL(RTC_WKALM_SET)
 851COMPATIBLE_IOCTL(RTC_WKALM_RD)
 852/*
 853 * These two are only for the sbus rtc driver, but
 854 * hwclock tries them on every rtc device first when
 855 * running on sparc.  On other architectures the entries
 856 * are useless but harmless.
 857 */
 858COMPATIBLE_IOCTL(_IOR('p', 20, int[7])) /* RTCGET */
 859COMPATIBLE_IOCTL(_IOW('p', 21, int[7])) /* RTCSET */
 860/* Little m */
 861COMPATIBLE_IOCTL(MTIOCTOP)
 862/* Socket level stuff */
 863COMPATIBLE_IOCTL(FIOQSIZE)
 864#ifdef CONFIG_BLOCK
 865/* md calls this on random blockdevs */
 866IGNORE_IOCTL(RAID_VERSION)
 867/* qemu/qemu-img might call these two on plain files for probing */
 868IGNORE_IOCTL(CDROM_DRIVE_STATUS)
 869IGNORE_IOCTL(FDGETPRM32)
 870/* SG stuff */
 871COMPATIBLE_IOCTL(SG_SET_TIMEOUT)
 872COMPATIBLE_IOCTL(SG_GET_TIMEOUT)
 873COMPATIBLE_IOCTL(SG_EMULATED_HOST)
 874COMPATIBLE_IOCTL(SG_GET_TRANSFORM)
 875COMPATIBLE_IOCTL(SG_SET_RESERVED_SIZE)
 876COMPATIBLE_IOCTL(SG_GET_RESERVED_SIZE)
 877COMPATIBLE_IOCTL(SG_GET_SCSI_ID)
 878COMPATIBLE_IOCTL(SG_SET_FORCE_LOW_DMA)
 879COMPATIBLE_IOCTL(SG_GET_LOW_DMA)
 880COMPATIBLE_IOCTL(SG_SET_FORCE_PACK_ID)
 881COMPATIBLE_IOCTL(SG_GET_PACK_ID)
 882COMPATIBLE_IOCTL(SG_GET_NUM_WAITING)
 883COMPATIBLE_IOCTL(SG_SET_DEBUG)
 884COMPATIBLE_IOCTL(SG_GET_SG_TABLESIZE)
 885COMPATIBLE_IOCTL(SG_GET_COMMAND_Q)
 886COMPATIBLE_IOCTL(SG_SET_COMMAND_Q)
 887COMPATIBLE_IOCTL(SG_GET_VERSION_NUM)
 888COMPATIBLE_IOCTL(SG_NEXT_CMD_LEN)
 889COMPATIBLE_IOCTL(SG_SCSI_RESET)
 890COMPATIBLE_IOCTL(SG_GET_REQUEST_TABLE)
 891COMPATIBLE_IOCTL(SG_SET_KEEP_ORPHAN)
 892COMPATIBLE_IOCTL(SG_GET_KEEP_ORPHAN)
 893#endif
 894/* PPP stuff */
 895COMPATIBLE_IOCTL(PPPIOCGFLAGS)
 896COMPATIBLE_IOCTL(PPPIOCSFLAGS)
 897COMPATIBLE_IOCTL(PPPIOCGASYNCMAP)
 898COMPATIBLE_IOCTL(PPPIOCSASYNCMAP)
 899COMPATIBLE_IOCTL(PPPIOCGUNIT)
 900COMPATIBLE_IOCTL(PPPIOCGRASYNCMAP)
 901COMPATIBLE_IOCTL(PPPIOCSRASYNCMAP)
 902COMPATIBLE_IOCTL(PPPIOCGMRU)
 903COMPATIBLE_IOCTL(PPPIOCSMRU)
 904COMPATIBLE_IOCTL(PPPIOCSMAXCID)
 905COMPATIBLE_IOCTL(PPPIOCGXASYNCMAP)
 906COMPATIBLE_IOCTL(PPPIOCSXASYNCMAP)
 907COMPATIBLE_IOCTL(PPPIOCXFERUNIT)
 908/* PPPIOCSCOMPRESS is translated */
 909COMPATIBLE_IOCTL(PPPIOCGNPMODE)
 910COMPATIBLE_IOCTL(PPPIOCSNPMODE)
 911COMPATIBLE_IOCTL(PPPIOCGDEBUG)
 912COMPATIBLE_IOCTL(PPPIOCSDEBUG)
 913/* PPPIOCSPASS is translated */
 914/* PPPIOCSACTIVE is translated */
 915/* PPPIOCGIDLE is translated */
 916COMPATIBLE_IOCTL(PPPIOCNEWUNIT)
 917COMPATIBLE_IOCTL(PPPIOCATTACH)
 918COMPATIBLE_IOCTL(PPPIOCDETACH)
 919COMPATIBLE_IOCTL(PPPIOCSMRRU)
 920COMPATIBLE_IOCTL(PPPIOCCONNECT)
 921COMPATIBLE_IOCTL(PPPIOCDISCONN)
 922COMPATIBLE_IOCTL(PPPIOCATTCHAN)
 923COMPATIBLE_IOCTL(PPPIOCGCHAN)
 924COMPATIBLE_IOCTL(PPPIOCGL2TPSTATS)
 925/* PPPOX */
 926COMPATIBLE_IOCTL(PPPOEIOCSFWD)
 927COMPATIBLE_IOCTL(PPPOEIOCDFWD)
 928/* Big A */
 929/* sparc only */
 930/* Big Q for sound/OSS */
 931COMPATIBLE_IOCTL(SNDCTL_SEQ_RESET)
 932COMPATIBLE_IOCTL(SNDCTL_SEQ_SYNC)
 933COMPATIBLE_IOCTL(SNDCTL_SYNTH_INFO)
 934COMPATIBLE_IOCTL(SNDCTL_SEQ_CTRLRATE)
 935COMPATIBLE_IOCTL(SNDCTL_SEQ_GETOUTCOUNT)
 936COMPATIBLE_IOCTL(SNDCTL_SEQ_GETINCOUNT)
 937COMPATIBLE_IOCTL(SNDCTL_SEQ_PERCMODE)
 938COMPATIBLE_IOCTL(SNDCTL_FM_LOAD_INSTR)
 939COMPATIBLE_IOCTL(SNDCTL_SEQ_TESTMIDI)
 940COMPATIBLE_IOCTL(SNDCTL_SEQ_RESETSAMPLES)
 941COMPATIBLE_IOCTL(SNDCTL_SEQ_NRSYNTHS)
 942COMPATIBLE_IOCTL(SNDCTL_SEQ_NRMIDIS)
 943COMPATIBLE_IOCTL(SNDCTL_MIDI_INFO)
 944COMPATIBLE_IOCTL(SNDCTL_SEQ_THRESHOLD)
 945COMPATIBLE_IOCTL(SNDCTL_SYNTH_MEMAVL)
 946COMPATIBLE_IOCTL(SNDCTL_FM_4OP_ENABLE)
 947COMPATIBLE_IOCTL(SNDCTL_SEQ_PANIC)
 948COMPATIBLE_IOCTL(SNDCTL_SEQ_OUTOFBAND)
 949COMPATIBLE_IOCTL(SNDCTL_SEQ_GETTIME)
 950COMPATIBLE_IOCTL(SNDCTL_SYNTH_ID)
 951COMPATIBLE_IOCTL(SNDCTL_SYNTH_CONTROL)
 952COMPATIBLE_IOCTL(SNDCTL_SYNTH_REMOVESAMPLE)
 953/* Big T for sound/OSS */
 954COMPATIBLE_IOCTL(SNDCTL_TMR_TIMEBASE)
 955COMPATIBLE_IOCTL(SNDCTL_TMR_START)
 956COMPATIBLE_IOCTL(SNDCTL_TMR_STOP)
 957COMPATIBLE_IOCTL(SNDCTL_TMR_CONTINUE)
 958COMPATIBLE_IOCTL(SNDCTL_TMR_TEMPO)
 959COMPATIBLE_IOCTL(SNDCTL_TMR_SOURCE)
 960COMPATIBLE_IOCTL(SNDCTL_TMR_METRONOME)
 961COMPATIBLE_IOCTL(SNDCTL_TMR_SELECT)
 962/* Little m for sound/OSS */
 963COMPATIBLE_IOCTL(SNDCTL_MIDI_PRETIME)
 964COMPATIBLE_IOCTL(SNDCTL_MIDI_MPUMODE)
 965COMPATIBLE_IOCTL(SNDCTL_MIDI_MPUCMD)
 966/* Big P for sound/OSS */
 967COMPATIBLE_IOCTL(SNDCTL_DSP_RESET)
 968COMPATIBLE_IOCTL(SNDCTL_DSP_SYNC)
 969COMPATIBLE_IOCTL(SNDCTL_DSP_SPEED)
 970COMPATIBLE_IOCTL(SNDCTL_DSP_STEREO)
 971COMPATIBLE_IOCTL(SNDCTL_DSP_GETBLKSIZE)
 972COMPATIBLE_IOCTL(SNDCTL_DSP_CHANNELS)
 973COMPATIBLE_IOCTL(SOUND_PCM_WRITE_FILTER)
 974COMPATIBLE_IOCTL(SNDCTL_DSP_POST)
 975COMPATIBLE_IOCTL(SNDCTL_DSP_SUBDIVIDE)
 976COMPATIBLE_IOCTL(SNDCTL_DSP_SETFRAGMENT)
 977COMPATIBLE_IOCTL(SNDCTL_DSP_GETFMTS)
 978COMPATIBLE_IOCTL(SNDCTL_DSP_SETFMT)
 979COMPATIBLE_IOCTL(SNDCTL_DSP_GETOSPACE)
 980COMPATIBLE_IOCTL(SNDCTL_DSP_GETISPACE)
 981COMPATIBLE_IOCTL(SNDCTL_DSP_NONBLOCK)
 982COMPATIBLE_IOCTL(SNDCTL_DSP_GETCAPS)
 983COMPATIBLE_IOCTL(SNDCTL_DSP_GETTRIGGER)
 984COMPATIBLE_IOCTL(SNDCTL_DSP_SETTRIGGER)
 985COMPATIBLE_IOCTL(SNDCTL_DSP_GETIPTR)
 986COMPATIBLE_IOCTL(SNDCTL_DSP_GETOPTR)
 987/* SNDCTL_DSP_MAPINBUF,  XXX needs translation */
 988/* SNDCTL_DSP_MAPOUTBUF,  XXX needs translation */
 989COMPATIBLE_IOCTL(SNDCTL_DSP_SETSYNCRO)
 990COMPATIBLE_IOCTL(SNDCTL_DSP_SETDUPLEX)
 991COMPATIBLE_IOCTL(SNDCTL_DSP_GETODELAY)
 992COMPATIBLE_IOCTL(SNDCTL_DSP_PROFILE)
 993COMPATIBLE_IOCTL(SOUND_PCM_READ_RATE)
 994COMPATIBLE_IOCTL(SOUND_PCM_READ_CHANNELS)
 995COMPATIBLE_IOCTL(SOUND_PCM_READ_BITS)
 996COMPATIBLE_IOCTL(SOUND_PCM_READ_FILTER)
 997/* Big C for sound/OSS */
 998COMPATIBLE_IOCTL(SNDCTL_COPR_RESET)
 999COMPATIBLE_IOCTL(SNDCTL_COPR_LOAD)
1000COMPATIBLE_IOCTL(SNDCTL_COPR_RDATA)
1001COMPATIBLE_IOCTL(SNDCTL_COPR_RCODE)
1002COMPATIBLE_IOCTL(SNDCTL_COPR_WDATA)
1003COMPATIBLE_IOCTL(SNDCTL_COPR_WCODE)
1004COMPATIBLE_IOCTL(SNDCTL_COPR_RUN)
1005COMPATIBLE_IOCTL(SNDCTL_COPR_HALT)
1006COMPATIBLE_IOCTL(SNDCTL_COPR_SENDMSG)
1007COMPATIBLE_IOCTL(SNDCTL_COPR_RCVMSG)
1008/* Big M for sound/OSS */
1009COMPATIBLE_IOCTL(SOUND_MIXER_READ_VOLUME)
1010COMPATIBLE_IOCTL(SOUND_MIXER_READ_BASS)
1011COMPATIBLE_IOCTL(SOUND_MIXER_READ_TREBLE)
1012COMPATIBLE_IOCTL(SOUND_MIXER_READ_SYNTH)
1013COMPATIBLE_IOCTL(SOUND_MIXER_READ_PCM)
1014COMPATIBLE_IOCTL(SOUND_MIXER_READ_SPEAKER)
1015COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE)
1016COMPATIBLE_IOCTL(SOUND_MIXER_READ_MIC)
1017COMPATIBLE_IOCTL(SOUND_MIXER_READ_CD)
1018COMPATIBLE_IOCTL(SOUND_MIXER_READ_IMIX)
1019COMPATIBLE_IOCTL(SOUND_MIXER_READ_ALTPCM)
1020COMPATIBLE_IOCTL(SOUND_MIXER_READ_RECLEV)
1021COMPATIBLE_IOCTL(SOUND_MIXER_READ_IGAIN)
1022COMPATIBLE_IOCTL(SOUND_MIXER_READ_OGAIN)
1023COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE1)
1024COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE2)
1025COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE3)
1026COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_DIGITAL1))
1027COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_DIGITAL2))
1028COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_DIGITAL3))
1029COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_PHONEIN))
1030COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_PHONEOUT))
1031COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_VIDEO))
1032COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_RADIO))
1033COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_MONITOR))
1034COMPATIBLE_IOCTL(SOUND_MIXER_READ_MUTE)
1035/* SOUND_MIXER_READ_ENHANCE,  same value as READ_MUTE */
1036/* SOUND_MIXER_READ_LOUD,  same value as READ_MUTE */
1037COMPATIBLE_IOCTL(SOUND_MIXER_READ_RECSRC)
1038COMPATIBLE_IOCTL(SOUND_MIXER_READ_DEVMASK)
1039COMPATIBLE_IOCTL(SOUND_MIXER_READ_RECMASK)
1040COMPATIBLE_IOCTL(SOUND_MIXER_READ_STEREODEVS)
1041COMPATIBLE_IOCTL(SOUND_MIXER_READ_CAPS)
1042COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_VOLUME)
1043COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_BASS)
1044COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_TREBLE)
1045COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_SYNTH)
1046COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_PCM)
1047COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_SPEAKER)
1048COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE)
1049COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_MIC)
1050COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_CD)
1051COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_IMIX)
1052COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_ALTPCM)
1053COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_RECLEV)
1054COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_IGAIN)
1055COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_OGAIN)
1056COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE1)
1057COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE2)
1058COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE3)
1059COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_DIGITAL1))
1060COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_DIGITAL2))
1061COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_DIGITAL3))
1062COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_PHONEIN))
1063COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_PHONEOUT))
1064COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_VIDEO))
1065COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_RADIO))
1066COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_MONITOR))
1067COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_MUTE)
1068/* SOUND_MIXER_WRITE_ENHANCE,  same value as WRITE_MUTE */
1069/* SOUND_MIXER_WRITE_LOUD,  same value as WRITE_MUTE */
1070COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_RECSRC)
1071COMPATIBLE_IOCTL(SOUND_MIXER_INFO)
1072COMPATIBLE_IOCTL(SOUND_OLD_MIXER_INFO)
1073COMPATIBLE_IOCTL(SOUND_MIXER_ACCESS)
1074COMPATIBLE_IOCTL(SOUND_MIXER_AGC)
1075COMPATIBLE_IOCTL(SOUND_MIXER_3DSE)
1076COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE1)
1077COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE2)
1078COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE3)
1079COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE4)
1080COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE5)
1081COMPATIBLE_IOCTL(SOUND_MIXER_GETLEVELS)
1082COMPATIBLE_IOCTL(SOUND_MIXER_SETLEVELS)
1083COMPATIBLE_IOCTL(OSS_GETVERSION)
1084/* Raw devices */
1085COMPATIBLE_IOCTL(RAW_SETBIND)
1086COMPATIBLE_IOCTL(RAW_GETBIND)
1087/* Watchdog */
1088COMPATIBLE_IOCTL(WDIOC_GETSUPPORT)
1089COMPATIBLE_IOCTL(WDIOC_GETSTATUS)
1090COMPATIBLE_IOCTL(WDIOC_GETBOOTSTATUS)
1091COMPATIBLE_IOCTL(WDIOC_GETTEMP)
1092COMPATIBLE_IOCTL(WDIOC_SETOPTIONS)
1093COMPATIBLE_IOCTL(WDIOC_KEEPALIVE)
1094COMPATIBLE_IOCTL(WDIOC_SETTIMEOUT)
1095COMPATIBLE_IOCTL(WDIOC_GETTIMEOUT)
1096COMPATIBLE_IOCTL(WDIOC_SETPRETIMEOUT)
1097COMPATIBLE_IOCTL(WDIOC_GETPRETIMEOUT)
1098/* Big R */
1099COMPATIBLE_IOCTL(RNDGETENTCNT)
1100COMPATIBLE_IOCTL(RNDADDTOENTCNT)
1101COMPATIBLE_IOCTL(RNDGETPOOL)
1102COMPATIBLE_IOCTL(RNDADDENTROPY)
1103COMPATIBLE_IOCTL(RNDZAPENTCNT)
1104COMPATIBLE_IOCTL(RNDCLEARPOOL)
1105/* Bluetooth */
1106COMPATIBLE_IOCTL(HCIDEVUP)
1107COMPATIBLE_IOCTL(HCIDEVDOWN)
1108COMPATIBLE_IOCTL(HCIDEVRESET)
1109COMPATIBLE_IOCTL(HCIDEVRESTAT)
1110COMPATIBLE_IOCTL(HCIGETDEVLIST)
1111COMPATIBLE_IOCTL(HCIGETDEVINFO)
1112COMPATIBLE_IOCTL(HCIGETCONNLIST)
1113COMPATIBLE_IOCTL(HCIGETCONNINFO)
1114COMPATIBLE_IOCTL(HCIGETAUTHINFO)
1115COMPATIBLE_IOCTL(HCISETRAW)
1116COMPATIBLE_IOCTL(HCISETSCAN)
1117COMPATIBLE_IOCTL(HCISETAUTH)
1118COMPATIBLE_IOCTL(HCISETENCRYPT)
1119COMPATIBLE_IOCTL(HCISETPTYPE)
1120COMPATIBLE_IOCTL(HCISETLINKPOL)
1121COMPATIBLE_IOCTL(HCISETLINKMODE)
1122COMPATIBLE_IOCTL(HCISETACLMTU)
1123COMPATIBLE_IOCTL(HCISETSCOMTU)
1124COMPATIBLE_IOCTL(HCIBLOCKADDR)
1125COMPATIBLE_IOCTL(HCIUNBLOCKADDR)
1126COMPATIBLE_IOCTL(HCIINQUIRY)
1127COMPATIBLE_IOCTL(HCIUARTSETPROTO)
1128COMPATIBLE_IOCTL(HCIUARTGETPROTO)
1129COMPATIBLE_IOCTL(HCIUARTGETDEVICE)
1130COMPATIBLE_IOCTL(HCIUARTSETFLAGS)
1131COMPATIBLE_IOCTL(HCIUARTGETFLAGS)
1132COMPATIBLE_IOCTL(RFCOMMCREATEDEV)
1133COMPATIBLE_IOCTL(RFCOMMRELEASEDEV)
1134COMPATIBLE_IOCTL(RFCOMMGETDEVLIST)
1135COMPATIBLE_IOCTL(RFCOMMGETDEVINFO)
1136COMPATIBLE_IOCTL(RFCOMMSTEALDLC)
1137COMPATIBLE_IOCTL(BNEPCONNADD)
1138COMPATIBLE_IOCTL(BNEPCONNDEL)
1139COMPATIBLE_IOCTL(BNEPGETCONNLIST)
1140COMPATIBLE_IOCTL(BNEPGETCONNINFO)
1141COMPATIBLE_IOCTL(BNEPGETSUPPFEAT)
1142COMPATIBLE_IOCTL(CMTPCONNADD)
1143COMPATIBLE_IOCTL(CMTPCONNDEL)
1144COMPATIBLE_IOCTL(CMTPGETCONNLIST)
1145COMPATIBLE_IOCTL(CMTPGETCONNINFO)
1146COMPATIBLE_IOCTL(HIDPCONNADD)
1147COMPATIBLE_IOCTL(HIDPCONNDEL)
1148COMPATIBLE_IOCTL(HIDPGETCONNLIST)
1149COMPATIBLE_IOCTL(HIDPGETCONNINFO)
1150/* CAPI */
1151COMPATIBLE_IOCTL(CAPI_REGISTER)
1152COMPATIBLE_IOCTL(CAPI_GET_MANUFACTURER)
1153COMPATIBLE_IOCTL(CAPI_GET_VERSION)
1154COMPATIBLE_IOCTL(CAPI_GET_SERIAL)
1155COMPATIBLE_IOCTL(CAPI_GET_PROFILE)
1156COMPATIBLE_IOCTL(CAPI_MANUFACTURER_CMD)
1157COMPATIBLE_IOCTL(CAPI_GET_ERRCODE)
1158COMPATIBLE_IOCTL(CAPI_INSTALLED)
1159COMPATIBLE_IOCTL(CAPI_GET_FLAGS)
1160COMPATIBLE_IOCTL(CAPI_SET_FLAGS)
1161COMPATIBLE_IOCTL(CAPI_CLR_FLAGS)
1162COMPATIBLE_IOCTL(CAPI_NCCI_OPENCOUNT)
1163COMPATIBLE_IOCTL(CAPI_NCCI_GETUNIT)
1164/* Siemens Gigaset */
1165COMPATIBLE_IOCTL(GIGASET_REDIR)
1166COMPATIBLE_IOCTL(GIGASET_CONFIG)
1167COMPATIBLE_IOCTL(GIGASET_BRKCHARS)
1168COMPATIBLE_IOCTL(GIGASET_VERSION)
1169/* Misc. */
1170COMPATIBLE_IOCTL(0x41545900)            /* ATYIO_CLKR */
1171COMPATIBLE_IOCTL(0x41545901)            /* ATYIO_CLKW */
1172COMPATIBLE_IOCTL(PCIIOC_CONTROLLER)
1173COMPATIBLE_IOCTL(PCIIOC_MMAP_IS_IO)
1174COMPATIBLE_IOCTL(PCIIOC_MMAP_IS_MEM)
1175COMPATIBLE_IOCTL(PCIIOC_WRITE_COMBINE)
1176/* hiddev */
1177COMPATIBLE_IOCTL(HIDIOCGVERSION)
1178COMPATIBLE_IOCTL(HIDIOCAPPLICATION)
1179COMPATIBLE_IOCTL(HIDIOCGDEVINFO)
1180COMPATIBLE_IOCTL(HIDIOCGSTRING)
1181COMPATIBLE_IOCTL(HIDIOCINITREPORT)
1182COMPATIBLE_IOCTL(HIDIOCGREPORT)
1183COMPATIBLE_IOCTL(HIDIOCSREPORT)
1184COMPATIBLE_IOCTL(HIDIOCGREPORTINFO)
1185COMPATIBLE_IOCTL(HIDIOCGFIELDINFO)
1186COMPATIBLE_IOCTL(HIDIOCGUSAGE)
1187COMPATIBLE_IOCTL(HIDIOCSUSAGE)
1188COMPATIBLE_IOCTL(HIDIOCGUCODE)
1189COMPATIBLE_IOCTL(HIDIOCGFLAG)
1190COMPATIBLE_IOCTL(HIDIOCSFLAG)
1191COMPATIBLE_IOCTL(HIDIOCGCOLLECTIONINDEX)
1192COMPATIBLE_IOCTL(HIDIOCGCOLLECTIONINFO)
1193/* dvb */
1194COMPATIBLE_IOCTL(AUDIO_STOP)
1195COMPATIBLE_IOCTL(AUDIO_PLAY)
1196COMPATIBLE_IOCTL(AUDIO_PAUSE)
1197COMPATIBLE_IOCTL(AUDIO_CONTINUE)
1198COMPATIBLE_IOCTL(AUDIO_SELECT_SOURCE)
1199COMPATIBLE_IOCTL(AUDIO_SET_MUTE)
1200COMPATIBLE_IOCTL(AUDIO_SET_AV_SYNC)
1201COMPATIBLE_IOCTL(AUDIO_SET_BYPASS_MODE)
1202COMPATIBLE_IOCTL(AUDIO_CHANNEL_SELECT)
1203COMPATIBLE_IOCTL(AUDIO_GET_STATUS)
1204COMPATIBLE_IOCTL(AUDIO_GET_CAPABILITIES)
1205COMPATIBLE_IOCTL(AUDIO_CLEAR_BUFFER)
1206COMPATIBLE_IOCTL(AUDIO_SET_ID)
1207COMPATIBLE_IOCTL(AUDIO_SET_MIXER)
1208COMPATIBLE_IOCTL(AUDIO_SET_STREAMTYPE)
1209COMPATIBLE_IOCTL(AUDIO_SET_EXT_ID)
1210COMPATIBLE_IOCTL(AUDIO_SET_ATTRIBUTES)
1211COMPATIBLE_IOCTL(AUDIO_SET_KARAOKE)
1212COMPATIBLE_IOCTL(DMX_START)
1213COMPATIBLE_IOCTL(DMX_STOP)
1214COMPATIBLE_IOCTL(DMX_SET_FILTER)
1215COMPATIBLE_IOCTL(DMX_SET_PES_FILTER)
1216COMPATIBLE_IOCTL(DMX_SET_BUFFER_SIZE)
1217COMPATIBLE_IOCTL(DMX_GET_PES_PIDS)
1218COMPATIBLE_IOCTL(DMX_GET_STC)
1219COMPATIBLE_IOCTL(DMX_REQBUFS)
1220COMPATIBLE_IOCTL(DMX_QUERYBUF)
1221COMPATIBLE_IOCTL(DMX_EXPBUF)
1222COMPATIBLE_IOCTL(DMX_QBUF)
1223COMPATIBLE_IOCTL(DMX_DQBUF)
1224COMPATIBLE_IOCTL(VIDEO_STOP)
1225COMPATIBLE_IOCTL(VIDEO_PLAY)
1226COMPATIBLE_IOCTL(VIDEO_FREEZE)
1227COMPATIBLE_IOCTL(VIDEO_CONTINUE)
1228COMPATIBLE_IOCTL(VIDEO_SELECT_SOURCE)
1229COMPATIBLE_IOCTL(VIDEO_SET_BLANK)
1230COMPATIBLE_IOCTL(VIDEO_GET_STATUS)
1231COMPATIBLE_IOCTL(VIDEO_SET_DISPLAY_FORMAT)
1232COMPATIBLE_IOCTL(VIDEO_FAST_FORWARD)
1233COMPATIBLE_IOCTL(VIDEO_SLOWMOTION)
1234COMPATIBLE_IOCTL(VIDEO_GET_CAPABILITIES)
1235COMPATIBLE_IOCTL(VIDEO_CLEAR_BUFFER)
1236COMPATIBLE_IOCTL(VIDEO_SET_ID)
1237COMPATIBLE_IOCTL(VIDEO_SET_STREAMTYPE)
1238COMPATIBLE_IOCTL(VIDEO_SET_FORMAT)
1239COMPATIBLE_IOCTL(VIDEO_SET_SYSTEM)
1240COMPATIBLE_IOCTL(VIDEO_SET_HIGHLIGHT)
1241COMPATIBLE_IOCTL(VIDEO_SET_SPU)
1242COMPATIBLE_IOCTL(VIDEO_GET_NAVI)
1243COMPATIBLE_IOCTL(VIDEO_SET_ATTRIBUTES)
1244COMPATIBLE_IOCTL(VIDEO_GET_SIZE)
1245COMPATIBLE_IOCTL(VIDEO_GET_FRAME_RATE)
1246/* cec */
1247COMPATIBLE_IOCTL(CEC_ADAP_G_CAPS)
1248COMPATIBLE_IOCTL(CEC_ADAP_G_LOG_ADDRS)
1249COMPATIBLE_IOCTL(CEC_ADAP_S_LOG_ADDRS)
1250COMPATIBLE_IOCTL(CEC_ADAP_G_PHYS_ADDR)
1251COMPATIBLE_IOCTL(CEC_ADAP_S_PHYS_ADDR)
1252COMPATIBLE_IOCTL(CEC_G_MODE)
1253COMPATIBLE_IOCTL(CEC_S_MODE)
1254COMPATIBLE_IOCTL(CEC_TRANSMIT)
1255COMPATIBLE_IOCTL(CEC_RECEIVE)
1256COMPATIBLE_IOCTL(CEC_DQEVENT)
1257
1258/* joystick */
1259COMPATIBLE_IOCTL(JSIOCGVERSION)
1260COMPATIBLE_IOCTL(JSIOCGAXES)
1261COMPATIBLE_IOCTL(JSIOCGBUTTONS)
1262COMPATIBLE_IOCTL(JSIOCGNAME(0))
1263
1264#ifdef TIOCGLTC
1265COMPATIBLE_IOCTL(TIOCGLTC)
1266COMPATIBLE_IOCTL(TIOCSLTC)
1267#endif
1268#ifdef TIOCSTART
1269/*
1270 * For these two we have definitions in ioctls.h and/or termios.h on
1271 * some architectures but no actual implemention.  Some applications
1272 * like bash call them if they are defined in the headers, so we provide
1273 * entries here to avoid syslog message spew.
1274 */
1275COMPATIBLE_IOCTL(TIOCSTART)
1276COMPATIBLE_IOCTL(TIOCSTOP)
1277#endif
1278
1279/* fat 'r' ioctls. These are handled by fat with ->compat_ioctl,
1280   but we don't want warnings on other file systems. So declare
1281   them as compatible here. */
1282#define VFAT_IOCTL_READDIR_BOTH32       _IOR('r', 1, struct compat_dirent[2])
1283#define VFAT_IOCTL_READDIR_SHORT32      _IOR('r', 2, struct compat_dirent[2])
1284
1285IGNORE_IOCTL(VFAT_IOCTL_READDIR_BOTH32)
1286IGNORE_IOCTL(VFAT_IOCTL_READDIR_SHORT32)
1287
1288#ifdef CONFIG_SPARC
1289/* Sparc framebuffers, handled in sbusfb_compat_ioctl() */
1290IGNORE_IOCTL(FBIOGTYPE)
1291IGNORE_IOCTL(FBIOSATTR)
1292IGNORE_IOCTL(FBIOGATTR)
1293IGNORE_IOCTL(FBIOSVIDEO)
1294IGNORE_IOCTL(FBIOGVIDEO)
1295IGNORE_IOCTL(FBIOSCURPOS)
1296IGNORE_IOCTL(FBIOGCURPOS)
1297IGNORE_IOCTL(FBIOGCURMAX)
1298IGNORE_IOCTL(FBIOPUTCMAP32)
1299IGNORE_IOCTL(FBIOGETCMAP32)
1300IGNORE_IOCTL(FBIOSCURSOR32)
1301IGNORE_IOCTL(FBIOGCURSOR32)
1302#endif
1303};
1304
1305/*
1306 * Convert common ioctl arguments based on their command number
1307 *
1308 * Please do not add any code in here. Instead, implement
1309 * a compat_ioctl operation in the place that handleѕ the
1310 * ioctl for the native case.
1311 */
1312static long do_ioctl_trans(unsigned int cmd,
1313                 unsigned long arg, struct file *file)
1314{
1315        void __user *argp = compat_ptr(arg);
1316
1317        switch (cmd) {
1318        case PPPIOCGIDLE32:
1319                return ppp_gidle(file, cmd, argp);
1320        case PPPIOCSCOMPRESS32:
1321                return ppp_scompress(file, cmd, argp);
1322        case PPPIOCSPASS32:
1323        case PPPIOCSACTIVE32:
1324                return ppp_sock_fprog_ioctl_trans(file, cmd, argp);
1325#ifdef CONFIG_BLOCK
1326        case SG_IO:
1327                return sg_ioctl_trans(file, cmd, argp);
1328        case SG_GET_REQUEST_TABLE:
1329                return sg_grt_trans(file, cmd, argp);
1330        case MTIOCGET32:
1331        case MTIOCPOS32:
1332                return mt_ioctl_trans(file, cmd, argp);
1333#endif
1334        /* Serial */
1335        case TIOCGSERIAL:
1336        case TIOCSSERIAL:
1337                return serial_struct_ioctl(file, cmd, argp);
1338        /* Not implemented in the native kernel */
1339        case RTC_IRQP_READ32:
1340        case RTC_IRQP_SET32:
1341        case RTC_EPOCH_READ32:
1342        case RTC_EPOCH_SET32:
1343                return rtc_ioctl(file, cmd, argp);
1344
1345        /* dvb */
1346        case VIDEO_GET_EVENT:
1347                return do_video_get_event(file, cmd, argp);
1348        case VIDEO_STILLPICTURE:
1349                return do_video_stillpicture(file, cmd, argp);
1350        case VIDEO_SET_SPU_PALETTE:
1351                return do_video_set_spu_palette(file, cmd, argp);
1352        }
1353
1354        /*
1355         * These take an integer instead of a pointer as 'arg',
1356         * so we must not do a compat_ptr() translation.
1357         */
1358        switch (cmd) {
1359        /* Big T */
1360        case TCSBRKP:
1361        case TIOCMIWAIT:
1362        case TIOCSCTTY:
1363        /* RAID */
1364        case HOT_REMOVE_DISK:
1365        case HOT_ADD_DISK:
1366        case SET_DISK_FAULTY:
1367        case SET_BITMAP_FILE:
1368        /* Big K */
1369        case KDSIGACCEPT:
1370        case KIOCSOUND:
1371        case KDMKTONE:
1372        case KDSETMODE:
1373        case KDSKBMODE:
1374        case KDSKBMETA:
1375        case KDSKBLED:
1376        case KDSETLED:
1377                return vfs_ioctl(file, cmd, arg);
1378        }
1379
1380        return -ENOIOCTLCMD;
1381}
1382
1383static int compat_ioctl_check_table(unsigned int xcmd)
1384{
1385        int i;
1386        const int max = ARRAY_SIZE(ioctl_pointer) - 1;
1387
1388        BUILD_BUG_ON(max >= (1 << 16));
1389
1390        /* guess initial offset into table, assuming a
1391           normalized distribution */
1392        i = ((xcmd >> 16) * max) >> 16;
1393
1394        /* do linear search up first, until greater or equal */
1395        while (ioctl_pointer[i] < xcmd && i < max)
1396                i++;
1397
1398        /* then do linear search down */
1399        while (ioctl_pointer[i] > xcmd && i > 0)
1400                i--;
1401
1402        return ioctl_pointer[i] == xcmd;
1403}
1404
1405COMPAT_SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd,
1406                       compat_ulong_t, arg32)
1407{
1408        unsigned long arg = arg32;
1409        struct fd f = fdget(fd);
1410        int error = -EBADF;
1411        if (!f.file)
1412                goto out;
1413
1414        /* RED-PEN how should LSM module know it's handling 32bit? */
1415        error = security_file_ioctl(f.file, cmd, arg);
1416        if (error)
1417                goto out_fput;
1418
1419        /*
1420         * To allow the compat_ioctl handlers to be self contained
1421         * we need to check the common ioctls here first.
1422         * Just handle them with the standard handlers below.
1423         */
1424        switch (cmd) {
1425        case FIOCLEX:
1426        case FIONCLEX:
1427        case FIONBIO:
1428        case FIOASYNC:
1429        case FIOQSIZE:
1430                break;
1431
1432#if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
1433        case FS_IOC_RESVSP_32:
1434        case FS_IOC_RESVSP64_32:
1435                error = compat_ioctl_preallocate(f.file, compat_ptr(arg));
1436                goto out_fput;
1437#else
1438        case FS_IOC_RESVSP:
1439        case FS_IOC_RESVSP64:
1440                error = ioctl_preallocate(f.file, compat_ptr(arg));
1441                goto out_fput;
1442#endif
1443
1444        case FICLONE:
1445        case FICLONERANGE:
1446        case FIDEDUPERANGE:
1447        case FS_IOC_FIEMAP:
1448                goto do_ioctl;
1449
1450        case FIBMAP:
1451        case FIGETBSZ:
1452        case FIONREAD:
1453                if (S_ISREG(file_inode(f.file)->i_mode))
1454                        break;
1455                /*FALL THROUGH*/
1456
1457        default:
1458                if (f.file->f_op->compat_ioctl) {
1459                        error = f.file->f_op->compat_ioctl(f.file, cmd, arg);
1460                        if (error != -ENOIOCTLCMD)
1461                                goto out_fput;
1462                }
1463
1464                if (!f.file->f_op->unlocked_ioctl)
1465                        goto do_ioctl;
1466                break;
1467        }
1468
1469        if (compat_ioctl_check_table(XFORM(cmd)))
1470                goto found_handler;
1471
1472        error = do_ioctl_trans(cmd, arg, f.file);
1473        if (error == -ENOIOCTLCMD)
1474                error = -ENOTTY;
1475
1476        goto out_fput;
1477
1478 found_handler:
1479        arg = (unsigned long)compat_ptr(arg);
1480 do_ioctl:
1481        error = do_vfs_ioctl(f.file, fd, cmd, arg);
1482 out_fput:
1483        fdput(f);
1484 out:
1485        return error;
1486}
1487
1488static int __init init_sys32_ioctl_cmp(const void *p, const void *q)
1489{
1490        unsigned int a, b;
1491        a = *(unsigned int *)p;
1492        b = *(unsigned int *)q;
1493        if (a > b)
1494                return 1;
1495        if (a < b)
1496                return -1;
1497        return 0;
1498}
1499
1500static int __init init_sys32_ioctl(void)
1501{
1502        sort(ioctl_pointer, ARRAY_SIZE(ioctl_pointer), sizeof(*ioctl_pointer),
1503                init_sys32_ioctl_cmp, NULL);
1504        return 0;
1505}
1506__initcall(init_sys32_ioctl);
1507