linux/fs/xfs/xfs_ioctl32.c
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   1/*
   2 * Copyright (c) 2004-2005 Silicon Graphics, Inc.
   3 * All Rights Reserved.
   4 *
   5 * This program is free software; you can redistribute it and/or
   6 * modify it under the terms of the GNU General Public License as
   7 * published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope that it would be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write the Free Software Foundation,
  16 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17 */
  18#include <linux/compat.h>
  19#include <linux/ioctl.h>
  20#include <linux/mount.h>
  21#include <linux/slab.h>
  22#include <asm/uaccess.h>
  23#include "xfs.h"
  24#include "xfs_fs.h"
  25#include "xfs_format.h"
  26#include "xfs_log_format.h"
  27#include "xfs_trans_resv.h"
  28#include "xfs_sb.h"
  29#include "xfs_ag.h"
  30#include "xfs_mount.h"
  31#include "xfs_vnode.h"
  32#include "xfs_inode.h"
  33#include "xfs_itable.h"
  34#include "xfs_error.h"
  35#include "xfs_fsops.h"
  36#include "xfs_alloc.h"
  37#include "xfs_rtalloc.h"
  38#include "xfs_attr.h"
  39#include "xfs_ioctl.h"
  40#include "xfs_ioctl32.h"
  41#include "xfs_trace.h"
  42
  43#define  _NATIVE_IOC(cmd, type) \
  44          _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
  45
  46#ifdef BROKEN_X86_ALIGNMENT
  47STATIC int
  48xfs_compat_flock64_copyin(
  49        xfs_flock64_t           *bf,
  50        compat_xfs_flock64_t    __user *arg32)
  51{
  52        if (get_user(bf->l_type,        &arg32->l_type) ||
  53            get_user(bf->l_whence,      &arg32->l_whence) ||
  54            get_user(bf->l_start,       &arg32->l_start) ||
  55            get_user(bf->l_len,         &arg32->l_len) ||
  56            get_user(bf->l_sysid,       &arg32->l_sysid) ||
  57            get_user(bf->l_pid,         &arg32->l_pid) ||
  58            copy_from_user(bf->l_pad,   &arg32->l_pad,  4*sizeof(u32)))
  59                return -XFS_ERROR(EFAULT);
  60        return 0;
  61}
  62
  63STATIC int
  64xfs_compat_ioc_fsgeometry_v1(
  65        struct xfs_mount          *mp,
  66        compat_xfs_fsop_geom_v1_t __user *arg32)
  67{
  68        xfs_fsop_geom_t           fsgeo;
  69        int                       error;
  70
  71        error = xfs_fs_geometry(mp, &fsgeo, 3);
  72        if (error)
  73                return -error;
  74        /* The 32-bit variant simply has some padding at the end */
  75        if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
  76                return -XFS_ERROR(EFAULT);
  77        return 0;
  78}
  79
  80STATIC int
  81xfs_compat_growfs_data_copyin(
  82        struct xfs_growfs_data   *in,
  83        compat_xfs_growfs_data_t __user *arg32)
  84{
  85        if (get_user(in->newblocks, &arg32->newblocks) ||
  86            get_user(in->imaxpct,   &arg32->imaxpct))
  87                return -XFS_ERROR(EFAULT);
  88        return 0;
  89}
  90
  91STATIC int
  92xfs_compat_growfs_rt_copyin(
  93        struct xfs_growfs_rt     *in,
  94        compat_xfs_growfs_rt_t  __user *arg32)
  95{
  96        if (get_user(in->newblocks, &arg32->newblocks) ||
  97            get_user(in->extsize,   &arg32->extsize))
  98                return -XFS_ERROR(EFAULT);
  99        return 0;
 100}
 101
 102STATIC int
 103xfs_inumbers_fmt_compat(
 104        void                    __user *ubuffer,
 105        const xfs_inogrp_t      *buffer,
 106        long                    count,
 107        long                    *written)
 108{
 109        compat_xfs_inogrp_t     __user *p32 = ubuffer;
 110        long                    i;
 111
 112        for (i = 0; i < count; i++) {
 113                if (put_user(buffer[i].xi_startino,   &p32[i].xi_startino) ||
 114                    put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
 115                    put_user(buffer[i].xi_allocmask,  &p32[i].xi_allocmask))
 116                        return -XFS_ERROR(EFAULT);
 117        }
 118        *written = count * sizeof(*p32);
 119        return 0;
 120}
 121
 122#else
 123#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
 124#endif  /* BROKEN_X86_ALIGNMENT */
 125
 126STATIC int
 127xfs_ioctl32_bstime_copyin(
 128        xfs_bstime_t            *bstime,
 129        compat_xfs_bstime_t     __user *bstime32)
 130{
 131        compat_time_t           sec32;  /* tv_sec differs on 64 vs. 32 */
 132
 133        if (get_user(sec32,             &bstime32->tv_sec)      ||
 134            get_user(bstime->tv_nsec,   &bstime32->tv_nsec))
 135                return -XFS_ERROR(EFAULT);
 136        bstime->tv_sec = sec32;
 137        return 0;
 138}
 139
 140/* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
 141STATIC int
 142xfs_ioctl32_bstat_copyin(
 143        xfs_bstat_t             *bstat,
 144        compat_xfs_bstat_t      __user *bstat32)
 145{
 146        if (get_user(bstat->bs_ino,     &bstat32->bs_ino)       ||
 147            get_user(bstat->bs_mode,    &bstat32->bs_mode)      ||
 148            get_user(bstat->bs_nlink,   &bstat32->bs_nlink)     ||
 149            get_user(bstat->bs_uid,     &bstat32->bs_uid)       ||
 150            get_user(bstat->bs_gid,     &bstat32->bs_gid)       ||
 151            get_user(bstat->bs_rdev,    &bstat32->bs_rdev)      ||
 152            get_user(bstat->bs_blksize, &bstat32->bs_blksize)   ||
 153            get_user(bstat->bs_size,    &bstat32->bs_size)      ||
 154            xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
 155            xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
 156            xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
 157            get_user(bstat->bs_blocks,  &bstat32->bs_size)      ||
 158            get_user(bstat->bs_xflags,  &bstat32->bs_size)      ||
 159            get_user(bstat->bs_extsize, &bstat32->bs_extsize)   ||
 160            get_user(bstat->bs_extents, &bstat32->bs_extents)   ||
 161            get_user(bstat->bs_gen,     &bstat32->bs_gen)       ||
 162            get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
 163            get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
 164            get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
 165            get_user(bstat->bs_dmstate, &bstat32->bs_dmstate)   ||
 166            get_user(bstat->bs_aextents, &bstat32->bs_aextents))
 167                return -XFS_ERROR(EFAULT);
 168        return 0;
 169}
 170
 171/* XFS_IOC_FSBULKSTAT and friends */
 172
 173STATIC int
 174xfs_bstime_store_compat(
 175        compat_xfs_bstime_t     __user *p32,
 176        const xfs_bstime_t      *p)
 177{
 178        __s32                   sec32;
 179
 180        sec32 = p->tv_sec;
 181        if (put_user(sec32, &p32->tv_sec) ||
 182            put_user(p->tv_nsec, &p32->tv_nsec))
 183                return -XFS_ERROR(EFAULT);
 184        return 0;
 185}
 186
 187/* Return 0 on success or positive error (to xfs_bulkstat()) */
 188STATIC int
 189xfs_bulkstat_one_fmt_compat(
 190        void                    __user *ubuffer,
 191        int                     ubsize,
 192        int                     *ubused,
 193        const xfs_bstat_t       *buffer)
 194{
 195        compat_xfs_bstat_t      __user *p32 = ubuffer;
 196
 197        if (ubsize < sizeof(*p32))
 198                return XFS_ERROR(ENOMEM);
 199
 200        if (put_user(buffer->bs_ino,      &p32->bs_ino)         ||
 201            put_user(buffer->bs_mode,     &p32->bs_mode)        ||
 202            put_user(buffer->bs_nlink,    &p32->bs_nlink)       ||
 203            put_user(buffer->bs_uid,      &p32->bs_uid)         ||
 204            put_user(buffer->bs_gid,      &p32->bs_gid)         ||
 205            put_user(buffer->bs_rdev,     &p32->bs_rdev)        ||
 206            put_user(buffer->bs_blksize,  &p32->bs_blksize)     ||
 207            put_user(buffer->bs_size,     &p32->bs_size)        ||
 208            xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
 209            xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
 210            xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
 211            put_user(buffer->bs_blocks,   &p32->bs_blocks)      ||
 212            put_user(buffer->bs_xflags,   &p32->bs_xflags)      ||
 213            put_user(buffer->bs_extsize,  &p32->bs_extsize)     ||
 214            put_user(buffer->bs_extents,  &p32->bs_extents)     ||
 215            put_user(buffer->bs_gen,      &p32->bs_gen)         ||
 216            put_user(buffer->bs_projid,   &p32->bs_projid)      ||
 217            put_user(buffer->bs_projid_hi,      &p32->bs_projid_hi)     ||
 218            put_user(buffer->bs_dmevmask, &p32->bs_dmevmask)    ||
 219            put_user(buffer->bs_dmstate,  &p32->bs_dmstate)     ||
 220            put_user(buffer->bs_aextents, &p32->bs_aextents))
 221                return XFS_ERROR(EFAULT);
 222        if (ubused)
 223                *ubused = sizeof(*p32);
 224        return 0;
 225}
 226
 227STATIC int
 228xfs_bulkstat_one_compat(
 229        xfs_mount_t     *mp,            /* mount point for filesystem */
 230        xfs_ino_t       ino,            /* inode number to get data for */
 231        void            __user *buffer, /* buffer to place output in */
 232        int             ubsize,         /* size of buffer */
 233        int             *ubused,        /* bytes used by me */
 234        int             *stat)          /* BULKSTAT_RV_... */
 235{
 236        return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
 237                                    xfs_bulkstat_one_fmt_compat,
 238                                    ubused, stat);
 239}
 240
 241/* copied from xfs_ioctl.c */
 242STATIC int
 243xfs_compat_ioc_bulkstat(
 244        xfs_mount_t               *mp,
 245        unsigned int              cmd,
 246        compat_xfs_fsop_bulkreq_t __user *p32)
 247{
 248        u32                     addr;
 249        xfs_fsop_bulkreq_t      bulkreq;
 250        int                     count;  /* # of records returned */
 251        xfs_ino_t               inlast; /* last inode number */
 252        int                     done;
 253        int                     error;
 254
 255        /* done = 1 if there are more stats to get and if bulkstat */
 256        /* should be called again (unused here, but used in dmapi) */
 257
 258        if (!capable(CAP_SYS_ADMIN))
 259                return -XFS_ERROR(EPERM);
 260
 261        if (XFS_FORCED_SHUTDOWN(mp))
 262                return -XFS_ERROR(EIO);
 263
 264        if (get_user(addr, &p32->lastip))
 265                return -XFS_ERROR(EFAULT);
 266        bulkreq.lastip = compat_ptr(addr);
 267        if (get_user(bulkreq.icount, &p32->icount) ||
 268            get_user(addr, &p32->ubuffer))
 269                return -XFS_ERROR(EFAULT);
 270        bulkreq.ubuffer = compat_ptr(addr);
 271        if (get_user(addr, &p32->ocount))
 272                return -XFS_ERROR(EFAULT);
 273        bulkreq.ocount = compat_ptr(addr);
 274
 275        if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
 276                return -XFS_ERROR(EFAULT);
 277
 278        if ((count = bulkreq.icount) <= 0)
 279                return -XFS_ERROR(EINVAL);
 280
 281        if (bulkreq.ubuffer == NULL)
 282                return -XFS_ERROR(EINVAL);
 283
 284        if (cmd == XFS_IOC_FSINUMBERS_32) {
 285                error = xfs_inumbers(mp, &inlast, &count,
 286                                bulkreq.ubuffer, xfs_inumbers_fmt_compat);
 287        } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
 288                int res;
 289
 290                error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
 291                                sizeof(compat_xfs_bstat_t), NULL, &res);
 292        } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
 293                error = xfs_bulkstat(mp, &inlast, &count,
 294                        xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
 295                        bulkreq.ubuffer, &done);
 296        } else
 297                error = XFS_ERROR(EINVAL);
 298        if (error)
 299                return -error;
 300
 301        if (bulkreq.ocount != NULL) {
 302                if (copy_to_user(bulkreq.lastip, &inlast,
 303                                                sizeof(xfs_ino_t)))
 304                        return -XFS_ERROR(EFAULT);
 305
 306                if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
 307                        return -XFS_ERROR(EFAULT);
 308        }
 309
 310        return 0;
 311}
 312
 313STATIC int
 314xfs_compat_handlereq_copyin(
 315        xfs_fsop_handlereq_t            *hreq,
 316        compat_xfs_fsop_handlereq_t     __user *arg32)
 317{
 318        compat_xfs_fsop_handlereq_t     hreq32;
 319
 320        if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
 321                return -XFS_ERROR(EFAULT);
 322
 323        hreq->fd = hreq32.fd;
 324        hreq->path = compat_ptr(hreq32.path);
 325        hreq->oflags = hreq32.oflags;
 326        hreq->ihandle = compat_ptr(hreq32.ihandle);
 327        hreq->ihandlen = hreq32.ihandlen;
 328        hreq->ohandle = compat_ptr(hreq32.ohandle);
 329        hreq->ohandlen = compat_ptr(hreq32.ohandlen);
 330
 331        return 0;
 332}
 333
 334STATIC struct dentry *
 335xfs_compat_handlereq_to_dentry(
 336        struct file             *parfilp,
 337        compat_xfs_fsop_handlereq_t *hreq)
 338{
 339        return xfs_handle_to_dentry(parfilp,
 340                        compat_ptr(hreq->ihandle), hreq->ihandlen);
 341}
 342
 343STATIC int
 344xfs_compat_attrlist_by_handle(
 345        struct file             *parfilp,
 346        void                    __user *arg)
 347{
 348        int                     error;
 349        attrlist_cursor_kern_t  *cursor;
 350        compat_xfs_fsop_attrlist_handlereq_t al_hreq;
 351        struct dentry           *dentry;
 352        char                    *kbuf;
 353
 354        if (!capable(CAP_SYS_ADMIN))
 355                return -XFS_ERROR(EPERM);
 356        if (copy_from_user(&al_hreq, arg,
 357                           sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
 358                return -XFS_ERROR(EFAULT);
 359        if (al_hreq.buflen < sizeof(struct attrlist) ||
 360            al_hreq.buflen > XATTR_LIST_MAX)
 361                return -XFS_ERROR(EINVAL);
 362
 363        /*
 364         * Reject flags, only allow namespaces.
 365         */
 366        if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
 367                return -XFS_ERROR(EINVAL);
 368
 369        dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
 370        if (IS_ERR(dentry))
 371                return PTR_ERR(dentry);
 372
 373        error = -ENOMEM;
 374        kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
 375        if (!kbuf)
 376                goto out_dput;
 377
 378        cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
 379        error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
 380                                        al_hreq.flags, cursor);
 381        if (error)
 382                goto out_kfree;
 383
 384        if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
 385                error = -EFAULT;
 386
 387out_kfree:
 388        kmem_free(kbuf);
 389out_dput:
 390        dput(dentry);
 391        return error;
 392}
 393
 394STATIC int
 395xfs_compat_attrmulti_by_handle(
 396        struct file                             *parfilp,
 397        void                                    __user *arg)
 398{
 399        int                                     error;
 400        compat_xfs_attr_multiop_t               *ops;
 401        compat_xfs_fsop_attrmulti_handlereq_t   am_hreq;
 402        struct dentry                           *dentry;
 403        unsigned int                            i, size;
 404        unsigned char                           *attr_name;
 405
 406        if (!capable(CAP_SYS_ADMIN))
 407                return -XFS_ERROR(EPERM);
 408        if (copy_from_user(&am_hreq, arg,
 409                           sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
 410                return -XFS_ERROR(EFAULT);
 411
 412        /* overflow check */
 413        if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
 414                return -E2BIG;
 415
 416        dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
 417        if (IS_ERR(dentry))
 418                return PTR_ERR(dentry);
 419
 420        error = E2BIG;
 421        size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
 422        if (!size || size > 16 * PAGE_SIZE)
 423                goto out_dput;
 424
 425        ops = memdup_user(compat_ptr(am_hreq.ops), size);
 426        if (IS_ERR(ops)) {
 427                error = PTR_ERR(ops);
 428                goto out_dput;
 429        }
 430
 431        attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
 432        if (!attr_name)
 433                goto out_kfree_ops;
 434
 435        error = 0;
 436        for (i = 0; i < am_hreq.opcount; i++) {
 437                ops[i].am_error = strncpy_from_user((char *)attr_name,
 438                                compat_ptr(ops[i].am_attrname),
 439                                MAXNAMELEN);
 440                if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
 441                        error = -ERANGE;
 442                if (ops[i].am_error < 0)
 443                        break;
 444
 445                switch (ops[i].am_opcode) {
 446                case ATTR_OP_GET:
 447                        ops[i].am_error = xfs_attrmulti_attr_get(
 448                                        dentry->d_inode, attr_name,
 449                                        compat_ptr(ops[i].am_attrvalue),
 450                                        &ops[i].am_length, ops[i].am_flags);
 451                        break;
 452                case ATTR_OP_SET:
 453                        ops[i].am_error = mnt_want_write_file(parfilp);
 454                        if (ops[i].am_error)
 455                                break;
 456                        ops[i].am_error = xfs_attrmulti_attr_set(
 457                                        dentry->d_inode, attr_name,
 458                                        compat_ptr(ops[i].am_attrvalue),
 459                                        ops[i].am_length, ops[i].am_flags);
 460                        mnt_drop_write_file(parfilp);
 461                        break;
 462                case ATTR_OP_REMOVE:
 463                        ops[i].am_error = mnt_want_write_file(parfilp);
 464                        if (ops[i].am_error)
 465                                break;
 466                        ops[i].am_error = xfs_attrmulti_attr_remove(
 467                                        dentry->d_inode, attr_name,
 468                                        ops[i].am_flags);
 469                        mnt_drop_write_file(parfilp);
 470                        break;
 471                default:
 472                        ops[i].am_error = EINVAL;
 473                }
 474        }
 475
 476        if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
 477                error = XFS_ERROR(EFAULT);
 478
 479        kfree(attr_name);
 480 out_kfree_ops:
 481        kfree(ops);
 482 out_dput:
 483        dput(dentry);
 484        return -error;
 485}
 486
 487STATIC int
 488xfs_compat_fssetdm_by_handle(
 489        struct file             *parfilp,
 490        void                    __user *arg)
 491{
 492        int                     error;
 493        struct fsdmidata        fsd;
 494        compat_xfs_fsop_setdm_handlereq_t dmhreq;
 495        struct dentry           *dentry;
 496
 497        if (!capable(CAP_MKNOD))
 498                return -XFS_ERROR(EPERM);
 499        if (copy_from_user(&dmhreq, arg,
 500                           sizeof(compat_xfs_fsop_setdm_handlereq_t)))
 501                return -XFS_ERROR(EFAULT);
 502
 503        dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
 504        if (IS_ERR(dentry))
 505                return PTR_ERR(dentry);
 506
 507        if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
 508                error = -XFS_ERROR(EPERM);
 509                goto out;
 510        }
 511
 512        if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
 513                error = -XFS_ERROR(EFAULT);
 514                goto out;
 515        }
 516
 517        error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
 518                                 fsd.fsd_dmstate);
 519
 520out:
 521        dput(dentry);
 522        return error;
 523}
 524
 525long
 526xfs_file_compat_ioctl(
 527        struct file             *filp,
 528        unsigned                cmd,
 529        unsigned long           p)
 530{
 531        struct inode            *inode = file_inode(filp);
 532        struct xfs_inode        *ip = XFS_I(inode);
 533        struct xfs_mount        *mp = ip->i_mount;
 534        void                    __user *arg = (void __user *)p;
 535        int                     ioflags = 0;
 536        int                     error;
 537
 538        if (filp->f_mode & FMODE_NOCMTIME)
 539                ioflags |= IO_INVIS;
 540
 541        trace_xfs_file_compat_ioctl(ip);
 542
 543        switch (cmd) {
 544        /* No size or alignment issues on any arch */
 545        case XFS_IOC_DIOINFO:
 546        case XFS_IOC_FSGEOMETRY:
 547        case XFS_IOC_FSGETXATTR:
 548        case XFS_IOC_FSSETXATTR:
 549        case XFS_IOC_FSGETXATTRA:
 550        case XFS_IOC_FSSETDM:
 551        case XFS_IOC_GETBMAP:
 552        case XFS_IOC_GETBMAPA:
 553        case XFS_IOC_GETBMAPX:
 554        case XFS_IOC_FSCOUNTS:
 555        case XFS_IOC_SET_RESBLKS:
 556        case XFS_IOC_GET_RESBLKS:
 557        case XFS_IOC_FSGROWFSLOG:
 558        case XFS_IOC_GOINGDOWN:
 559        case XFS_IOC_ERROR_INJECTION:
 560        case XFS_IOC_ERROR_CLEARALL:
 561                return xfs_file_ioctl(filp, cmd, p);
 562#ifndef BROKEN_X86_ALIGNMENT
 563        /* These are handled fine if no alignment issues */
 564        case XFS_IOC_ALLOCSP:
 565        case XFS_IOC_FREESP:
 566        case XFS_IOC_RESVSP:
 567        case XFS_IOC_UNRESVSP:
 568        case XFS_IOC_ALLOCSP64:
 569        case XFS_IOC_FREESP64:
 570        case XFS_IOC_RESVSP64:
 571        case XFS_IOC_UNRESVSP64:
 572        case XFS_IOC_FSGEOMETRY_V1:
 573        case XFS_IOC_FSGROWFSDATA:
 574        case XFS_IOC_FSGROWFSRT:
 575        case XFS_IOC_ZERO_RANGE:
 576                return xfs_file_ioctl(filp, cmd, p);
 577#else
 578        case XFS_IOC_ALLOCSP_32:
 579        case XFS_IOC_FREESP_32:
 580        case XFS_IOC_ALLOCSP64_32:
 581        case XFS_IOC_FREESP64_32:
 582        case XFS_IOC_RESVSP_32:
 583        case XFS_IOC_UNRESVSP_32:
 584        case XFS_IOC_RESVSP64_32:
 585        case XFS_IOC_UNRESVSP64_32:
 586        case XFS_IOC_ZERO_RANGE_32: {
 587                struct xfs_flock64      bf;
 588
 589                if (xfs_compat_flock64_copyin(&bf, arg))
 590                        return -XFS_ERROR(EFAULT);
 591                cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
 592                return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
 593        }
 594        case XFS_IOC_FSGEOMETRY_V1_32:
 595                return xfs_compat_ioc_fsgeometry_v1(mp, arg);
 596        case XFS_IOC_FSGROWFSDATA_32: {
 597                struct xfs_growfs_data  in;
 598
 599                if (xfs_compat_growfs_data_copyin(&in, arg))
 600                        return -XFS_ERROR(EFAULT);
 601                error = mnt_want_write_file(filp);
 602                if (error)
 603                        return error;
 604                error = xfs_growfs_data(mp, &in);
 605                mnt_drop_write_file(filp);
 606                return -error;
 607        }
 608        case XFS_IOC_FSGROWFSRT_32: {
 609                struct xfs_growfs_rt    in;
 610
 611                if (xfs_compat_growfs_rt_copyin(&in, arg))
 612                        return -XFS_ERROR(EFAULT);
 613                error = mnt_want_write_file(filp);
 614                if (error)
 615                        return error;
 616                error = xfs_growfs_rt(mp, &in);
 617                mnt_drop_write_file(filp);
 618                return -error;
 619        }
 620#endif
 621        /* long changes size, but xfs only copiese out 32 bits */
 622        case XFS_IOC_GETXFLAGS_32:
 623        case XFS_IOC_SETXFLAGS_32:
 624        case XFS_IOC_GETVERSION_32:
 625                cmd = _NATIVE_IOC(cmd, long);
 626                return xfs_file_ioctl(filp, cmd, p);
 627        case XFS_IOC_SWAPEXT_32: {
 628                struct xfs_swapext        sxp;
 629                struct compat_xfs_swapext __user *sxu = arg;
 630
 631                /* Bulk copy in up to the sx_stat field, then copy bstat */
 632                if (copy_from_user(&sxp, sxu,
 633                                   offsetof(struct xfs_swapext, sx_stat)) ||
 634                    xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
 635                        return -XFS_ERROR(EFAULT);
 636                error = mnt_want_write_file(filp);
 637                if (error)
 638                        return error;
 639                error = xfs_ioc_swapext(&sxp);
 640                mnt_drop_write_file(filp);
 641                return -error;
 642        }
 643        case XFS_IOC_FSBULKSTAT_32:
 644        case XFS_IOC_FSBULKSTAT_SINGLE_32:
 645        case XFS_IOC_FSINUMBERS_32:
 646                return xfs_compat_ioc_bulkstat(mp, cmd, arg);
 647        case XFS_IOC_FD_TO_HANDLE_32:
 648        case XFS_IOC_PATH_TO_HANDLE_32:
 649        case XFS_IOC_PATH_TO_FSHANDLE_32: {
 650                struct xfs_fsop_handlereq       hreq;
 651
 652                if (xfs_compat_handlereq_copyin(&hreq, arg))
 653                        return -XFS_ERROR(EFAULT);
 654                cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
 655                return xfs_find_handle(cmd, &hreq);
 656        }
 657        case XFS_IOC_OPEN_BY_HANDLE_32: {
 658                struct xfs_fsop_handlereq       hreq;
 659
 660                if (xfs_compat_handlereq_copyin(&hreq, arg))
 661                        return -XFS_ERROR(EFAULT);
 662                return xfs_open_by_handle(filp, &hreq);
 663        }
 664        case XFS_IOC_READLINK_BY_HANDLE_32: {
 665                struct xfs_fsop_handlereq       hreq;
 666
 667                if (xfs_compat_handlereq_copyin(&hreq, arg))
 668                        return -XFS_ERROR(EFAULT);
 669                return xfs_readlink_by_handle(filp, &hreq);
 670        }
 671        case XFS_IOC_ATTRLIST_BY_HANDLE_32:
 672                return xfs_compat_attrlist_by_handle(filp, arg);
 673        case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
 674                return xfs_compat_attrmulti_by_handle(filp, arg);
 675        case XFS_IOC_FSSETDM_BY_HANDLE_32:
 676                return xfs_compat_fssetdm_by_handle(filp, arg);
 677        default:
 678                return -XFS_ERROR(ENOIOCTLCMD);
 679        }
 680}
 681