fs/xfs/xfs_ioctl32.c

   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_mount.h"
  29 #include "xfs_inode.h"
  30 #include "xfs_itable.h"
  31 #include "xfs_error.h"
  32 #include "xfs_fsops.h"
  33 #include "xfs_alloc.h"
  34 #include "xfs_rtalloc.h"
  35 #include "xfs_attr.h"
  36 #include "xfs_ioctl.h"
  37 #include "xfs_ioctl32.h"
  38 #include "xfs_trace.h"
  39
  40 #define  _NATIVE_IOC(cmd, type) \
  41           _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
  42
  43 #ifdef BROKEN_X86_ALIGNMENT
  44 STATIC int
  45 xfs_compat_flock64_copyin(
  46         xfs_flock64_t           *bf,
  47         compat_xfs_flock64_t    __user *arg32)
  48 {
  49         if (get_user(bf->l_type,        &arg32->l_type) ||
  50             get_user(bf->l_whence,      &arg32->l_whence) ||
  51             get_user(bf->l_start,       &arg32->l_start) ||
  52             get_user(bf->l_len,         &arg32->l_len) ||
  53             get_user(bf->l_sysid,       &arg32->l_sysid) ||
  54             get_user(bf->l_pid,         &arg32->l_pid) ||
  55             copy_from_user(bf->l_pad,   &arg32->l_pad,  4*sizeof(u32)))
  56                 return -EFAULT;
  57         return 0;
  58 }
  59
  60 STATIC int
  61 xfs_compat_ioc_fsgeometry_v1(
  62         struct xfs_mount          *mp,
  63         compat_xfs_fsop_geom_v1_t __user *arg32)
  64 {
  65         xfs_fsop_geom_t           fsgeo;
  66         int                       error;
  67
  68         error = xfs_fs_geometry(mp, &fsgeo, 3);
  69         if (error)
  70                 return error;
  71         /* The 32-bit variant simply has some padding at the end */
  72         if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
  73                 return -EFAULT;
  74         return 0;
  75 }
  76
  77 STATIC int
  78 xfs_compat_growfs_data_copyin(
  79         struct xfs_growfs_data   *in,
  80         compat_xfs_growfs_data_t __user *arg32)
  81 {
  82         if (get_user(in->newblocks, &arg32->newblocks) ||
  83             get_user(in->imaxpct,   &arg32->imaxpct))
  84                 return -EFAULT;
  85         return 0;
  86 }
  87
  88 STATIC int
  89 xfs_compat_growfs_rt_copyin(
  90         struct xfs_growfs_rt     *in,
  91         compat_xfs_growfs_rt_t  __user *arg32)
  92 {
  93         if (get_user(in->newblocks, &arg32->newblocks) ||
  94             get_user(in->extsize,   &arg32->extsize))
  95                 return -EFAULT;
  96         return 0;
  97 }
  98
  99 STATIC int
 100 xfs_inumbers_fmt_compat(
 101         void                    __user *ubuffer,
 102         const struct xfs_inogrp *buffer,
 103         long                    count,
 104         long                    *written)
 105 {
 106         compat_xfs_inogrp_t     __user *p32 = ubuffer;
 107         long                    i;
 108
 109         for (i = 0; i < count; i++) {
 110                 if (put_user(buffer[i].xi_startino,   &p32[i].xi_startino) ||
 111                     put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
 112                     put_user(buffer[i].xi_allocmask,  &p32[i].xi_allocmask))
 113                         return -EFAULT;
 114         }
 115         *written = count * sizeof(*p32);
 116         return 0;
 117 }
 118
 119 #else
 120 #define xfs_inumbers_fmt_compat xfs_inumbers_fmt
 121 #endif  /* BROKEN_X86_ALIGNMENT */
 122
 123 STATIC int
 124 xfs_ioctl32_bstime_copyin(
 125         xfs_bstime_t            *bstime,
 126         compat_xfs_bstime_t     __user *bstime32)
 127 {
 128         compat_time_t           sec32;  /* tv_sec differs on 64 vs. 32 */
 129
 130         if (get_user(sec32,             &bstime32->tv_sec)      ||
 131             get_user(bstime->tv_nsec,   &bstime32->tv_nsec))
 132                 return -EFAULT;
 133         bstime->tv_sec = sec32;
 134         return 0;
 135 }
 136
 137 /* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
 138 STATIC int
 139 xfs_ioctl32_bstat_copyin(
 140         xfs_bstat_t             *bstat,
 141         compat_xfs_bstat_t      __user *bstat32)
 142 {
 143         if (get_user(bstat->bs_ino,     &bstat32->bs_ino)       ||
 144             get_user(bstat->bs_mode,    &bstat32->bs_mode)      ||
 145             get_user(bstat->bs_nlink,   &bstat32->bs_nlink)     ||
 146             get_user(bstat->bs_uid,     &bstat32->bs_uid)       ||
 147             get_user(bstat->bs_gid,     &bstat32->bs_gid)       ||
 148             get_user(bstat->bs_rdev,    &bstat32->bs_rdev)      ||
 149             get_user(bstat->bs_blksize, &bstat32->bs_blksize)   ||
 150             get_user(bstat->bs_size,    &bstat32->bs_size)      ||
 151             xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
 152             xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
 153             xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
 154             get_user(bstat->bs_blocks,  &bstat32->bs_size)      ||
 155             get_user(bstat->bs_xflags,  &bstat32->bs_size)      ||
 156             get_user(bstat->bs_extsize, &bstat32->bs_extsize)   ||
 157             get_user(bstat->bs_extents, &bstat32->bs_extents)   ||
 158             get_user(bstat->bs_gen,     &bstat32->bs_gen)       ||
 159             get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
 160             get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
 161             get_user(bstat->bs_forkoff, &bstat32->bs_forkoff)   ||
 162             get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
 163             get_user(bstat->bs_dmstate, &bstat32->bs_dmstate)   ||
 164             get_user(bstat->bs_aextents, &bstat32->bs_aextents))
 165                 return -EFAULT;
 166         return 0;
 167 }
 168
 169 /* XFS_IOC_FSBULKSTAT and friends */
 170
 171 STATIC int
 172 xfs_bstime_store_compat(
 173         compat_xfs_bstime_t     __user *p32,
 174         const xfs_bstime_t      *p)
 175 {
 176         __s32                   sec32;
 177
 178         sec32 = p->tv_sec;
 179         if (put_user(sec32, &p32->tv_sec) ||
 180             put_user(p->tv_nsec, &p32->tv_nsec))
 181                 return -EFAULT;
 182         return 0;
 183 }
 184
 185 /* Return 0 on success or positive error (to xfs_bulkstat()) */
 186 STATIC int
 187 xfs_bulkstat_one_fmt_compat(
 188         void                    __user *ubuffer,
 189         int                     ubsize,
 190         int                     *ubused,
 191         const xfs_bstat_t       *buffer)
 192 {
 193         compat_xfs_bstat_t      __user *p32 = ubuffer;
 194
 195         if (ubsize < sizeof(*p32))
 196                 return -ENOMEM;
 197
 198         if (put_user(buffer->bs_ino,      &p32->bs_ino)         ||
 199             put_user(buffer->bs_mode,     &p32->bs_mode)        ||
 200             put_user(buffer->bs_nlink,    &p32->bs_nlink)       ||
 201             put_user(buffer->bs_uid,      &p32->bs_uid)         ||
 202             put_user(buffer->bs_gid,      &p32->bs_gid)         ||
 203             put_user(buffer->bs_rdev,     &p32->bs_rdev)        ||
 204             put_user(buffer->bs_blksize,  &p32->bs_blksize)     ||
 205             put_user(buffer->bs_size,     &p32->bs_size)        ||
 206             xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
 207             xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
 208             xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
 209             put_user(buffer->bs_blocks,   &p32->bs_blocks)      ||
 210             put_user(buffer->bs_xflags,   &p32->bs_xflags)      ||
 211             put_user(buffer->bs_extsize,  &p32->bs_extsize)     ||
 212             put_user(buffer->bs_extents,  &p32->bs_extents)     ||
 213             put_user(buffer->bs_gen,      &p32->bs_gen)         ||
 214             put_user(buffer->bs_projid,   &p32->bs_projid)      ||
 215             put_user(buffer->bs_projid_hi,      &p32->bs_projid_hi)     ||
 216             put_user(buffer->bs_forkoff,  &p32->bs_forkoff)     ||
 217             put_user(buffer->bs_dmevmask, &p32->bs_dmevmask)    ||
 218             put_user(buffer->bs_dmstate,  &p32->bs_dmstate)     ||
 219             put_user(buffer->bs_aextents, &p32->bs_aextents))
 220                 return -EFAULT;
 221         if (ubused)
 222                 *ubused = sizeof(*p32);
 223         return 0;
 224 }
 225
 226 STATIC int
 227 xfs_bulkstat_one_compat(
 228         xfs_mount_t     *mp,            /* mount point for filesystem */
 229         xfs_ino_t       ino,            /* inode number to get data for */
 230         void            __user *buffer, /* buffer to place output in */
 231         int             ubsize,         /* size of buffer */
 232         int             *ubused,        /* bytes used by me */
 233         int             *stat)          /* BULKSTAT_RV_... */
 234 {
 235         return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
 236                                     xfs_bulkstat_one_fmt_compat,
 237                                     ubused, stat);
 238 }
 239
 240 /* copied from xfs_ioctl.c */
 241 STATIC int
 242 xfs_compat_ioc_bulkstat(
 243         xfs_mount_t               *mp,
 244         unsigned int              cmd,
 245         compat_xfs_fsop_bulkreq_t __user *p32)
 246 {
 247         u32                     addr;
 248         xfs_fsop_bulkreq_t      bulkreq;
 249         int                     count;  /* # of records returned */
 250         xfs_ino_t               inlast; /* last inode number */
 251         int                     done;
 252         int                     error;
 253
 254         /* done = 1 if there are more stats to get and if bulkstat */
 255         /* should be called again (unused here, but used in dmapi) */
 256
 257         if (!capable(CAP_SYS_ADMIN))
 258                 return -EPERM;
 259
 260         if (XFS_FORCED_SHUTDOWN(mp))
 261                 return -EIO;
 262
 263         if (get_user(addr, &p32->lastip))
 264                 return -EFAULT;
 265         bulkreq.lastip = compat_ptr(addr);
 266         if (get_user(bulkreq.icount, &p32->icount) ||
 267             get_user(addr, &p32->ubuffer))
 268                 return -EFAULT;
 269         bulkreq.ubuffer = compat_ptr(addr);
 270         if (get_user(addr, &p32->ocount))
 271                 return -EFAULT;
 272         bulkreq.ocount = compat_ptr(addr);
 273
 274         if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
 275                 return -EFAULT;
 276
 277         if ((count = bulkreq.icount) <= 0)
 278                 return -EINVAL;
 279
 280         if (bulkreq.ubuffer == NULL)
 281                 return -EINVAL;
 282
 283         if (cmd == XFS_IOC_FSINUMBERS_32) {
 284                 error = xfs_inumbers(mp, &inlast, &count,
 285                                 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
 286         } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
 287                 int res;
 288
 289                 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
 290                                 sizeof(compat_xfs_bstat_t), NULL, &res);
 291         } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
 292                 error = xfs_bulkstat(mp, &inlast, &count,
 293                         xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
 294                         bulkreq.ubuffer, &done);
 295         } else
 296                 error = -EINVAL;
 297         if (error)
 298                 return error;
 299
 300         if (bulkreq.ocount != NULL) {
 301                 if (copy_to_user(bulkreq.lastip, &inlast,
 302                                                 sizeof(xfs_ino_t)))
 303                         return -EFAULT;
 304
 305                 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
 306                         return -EFAULT;
 307         }
 308
 309         return 0;
 310 }
 311
 312 STATIC int
 313 xfs_compat_handlereq_copyin(
 314         xfs_fsop_handlereq_t            *hreq,
 315         compat_xfs_fsop_handlereq_t     __user *arg32)
 316 {
 317         compat_xfs_fsop_handlereq_t     hreq32;
 318
 319         if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
 320                 return -EFAULT;
 321
 322         hreq->fd = hreq32.fd;
 323         hreq->path = compat_ptr(hreq32.path);
 324         hreq->oflags = hreq32.oflags;
 325         hreq->ihandle = compat_ptr(hreq32.ihandle);
 326         hreq->ihandlen = hreq32.ihandlen;
 327         hreq->ohandle = compat_ptr(hreq32.ohandle);
 328         hreq->ohandlen = compat_ptr(hreq32.ohandlen);
 329
 330         return 0;
 331 }
 332
 333 STATIC struct dentry *
 334 xfs_compat_handlereq_to_dentry(
 335         struct file             *parfilp,
 336         compat_xfs_fsop_handlereq_t *hreq)
 337 {
 338         return xfs_handle_to_dentry(parfilp,
 339                         compat_ptr(hreq->ihandle), hreq->ihandlen);
 340 }
 341
 342 STATIC int
 343 xfs_compat_attrlist_by_handle(
 344         struct file             *parfilp,
 345         void                    __user *arg)
 346 {
 347         int                     error;
 348         attrlist_cursor_kern_t  *cursor;
 349         compat_xfs_fsop_attrlist_handlereq_t __user *p = arg;
 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 -EPERM;
 356         if (copy_from_user(&al_hreq, arg,
 357                            sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
 358                 return -EFAULT;
 359         if (al_hreq.buflen < sizeof(struct attrlist) ||
 360             al_hreq.buflen > XFS_XATTR_LIST_MAX)
 361                 return -EINVAL;
 362
 363         /*
 364          * Reject flags, only allow namespaces.
 365          */
 366         if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
 367                 return -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(d_inode(dentry)), kbuf, al_hreq.buflen,
 380                                         al_hreq.flags, cursor);
 381         if (error)
 382                 goto out_kfree;
 383
 384         if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) {
 385                 error = -EFAULT;
 386                 goto out_kfree;
 387         }
 388
 389         if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
 390                 error = -EFAULT;
 391
 392 out_kfree:
 393         kmem_free(kbuf);
 394 out_dput:
 395         dput(dentry);
 396         return error;
 397 }
 398
 399 STATIC int
 400 xfs_compat_attrmulti_by_handle(
 401         struct file                             *parfilp,
 402         void                                    __user *arg)
 403 {
 404         int                                     error;
 405         compat_xfs_attr_multiop_t               *ops;
 406         compat_xfs_fsop_attrmulti_handlereq_t   am_hreq;
 407         struct dentry                           *dentry;
 408         unsigned int                            i, size;
 409         unsigned char                           *attr_name;
 410
 411         if (!capable(CAP_SYS_ADMIN))
 412                 return -EPERM;
 413         if (copy_from_user(&am_hreq, arg,
 414                            sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
 415                 return -EFAULT;
 416
 417         /* overflow check */
 418         if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
 419                 return -E2BIG;
 420
 421         dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
 422         if (IS_ERR(dentry))
 423                 return PTR_ERR(dentry);
 424
 425         error = -E2BIG;
 426         size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
 427         if (!size || size > 16 * PAGE_SIZE)
 428                 goto out_dput;
 429
 430         ops = memdup_user(compat_ptr(am_hreq.ops), size);
 431         if (IS_ERR(ops)) {
 432                 error = PTR_ERR(ops);
 433                 goto out_dput;
 434         }
 435
 436         error = -ENOMEM;
 437         attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
 438         if (!attr_name)
 439                 goto out_kfree_ops;
 440
 441         error = 0;
 442         for (i = 0; i < am_hreq.opcount; i++) {
 443                 ops[i].am_error = strncpy_from_user((char *)attr_name,
 444                                 compat_ptr(ops[i].am_attrname),
 445                                 MAXNAMELEN);
 446                 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
 447                         error = -ERANGE;
 448                 if (ops[i].am_error < 0)
 449                         break;
 450
 451                 switch (ops[i].am_opcode) {
 452                 case ATTR_OP_GET:
 453                         ops[i].am_error = xfs_attrmulti_attr_get(
 454                                         d_inode(dentry), attr_name,
 455                                         compat_ptr(ops[i].am_attrvalue),
 456                                         &ops[i].am_length, ops[i].am_flags);
 457                         break;
 458                 case ATTR_OP_SET:
 459                         ops[i].am_error = mnt_want_write_file(parfilp);
 460                         if (ops[i].am_error)
 461                                 break;
 462                         ops[i].am_error = xfs_attrmulti_attr_set(
 463                                         d_inode(dentry), attr_name,
 464                                         compat_ptr(ops[i].am_attrvalue),
 465                                         ops[i].am_length, ops[i].am_flags);
 466                         mnt_drop_write_file(parfilp);
 467                         break;
 468                 case ATTR_OP_REMOVE:
 469                         ops[i].am_error = mnt_want_write_file(parfilp);
 470                         if (ops[i].am_error)
 471                                 break;
 472                         ops[i].am_error = xfs_attrmulti_attr_remove(
 473                                         d_inode(dentry), attr_name,
 474                                         ops[i].am_flags);
 475                         mnt_drop_write_file(parfilp);
 476                         break;
 477                 default:
 478                         ops[i].am_error = -EINVAL;
 479                 }
 480         }
 481
 482         if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
 483                 error = -EFAULT;
 484
 485         kfree(attr_name);
 486  out_kfree_ops:
 487         kfree(ops);
 488  out_dput:
 489         dput(dentry);
 490         return error;
 491 }
 492
 493 STATIC int
 494 xfs_compat_fssetdm_by_handle(
 495         struct file             *parfilp,
 496         void                    __user *arg)
 497 {
 498         int                     error;
 499         struct fsdmidata        fsd;
 500         compat_xfs_fsop_setdm_handlereq_t dmhreq;
 501         struct dentry           *dentry;
 502
 503         if (!capable(CAP_MKNOD))
 504                 return -EPERM;
 505         if (copy_from_user(&dmhreq, arg,
 506                            sizeof(compat_xfs_fsop_setdm_handlereq_t)))
 507                 return -EFAULT;
 508
 509         dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
 510         if (IS_ERR(dentry))
 511                 return PTR_ERR(dentry);
 512
 513         if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) {
 514                 error = -EPERM;
 515                 goto out;
 516         }
 517
 518         if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
 519                 error = -EFAULT;
 520                 goto out;
 521         }
 522
 523         error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask,
 524                                  fsd.fsd_dmstate);
 525
 526 out:
 527         dput(dentry);
 528         return error;
 529 }
 530
 531 long
 532 xfs_file_compat_ioctl(
 533         struct file             *filp,
 534         unsigned                cmd,
 535         unsigned long           p)
 536 {
 537         struct inode            *inode = file_inode(filp);
 538         struct xfs_inode        *ip = XFS_I(inode);
 539         struct xfs_mount        *mp = ip->i_mount;
 540         void                    __user *arg = (void __user *)p;
 541         int                     ioflags = 0;
 542         int                     error;
 543
 544         if (filp->f_mode & FMODE_NOCMTIME)
 545                 ioflags |= XFS_IO_INVIS;
 546
 547         trace_xfs_file_compat_ioctl(ip);
 548
 549         switch (cmd) {
 550         /* No size or alignment issues on any arch */
 551         case XFS_IOC_DIOINFO:
 552         case XFS_IOC_FSGEOMETRY:
 553         case XFS_IOC_FSGETXATTR:
 554         case XFS_IOC_FSSETXATTR:
 555         case XFS_IOC_FSGETXATTRA:
 556         case XFS_IOC_FSSETDM:
 557         case XFS_IOC_GETBMAP:
 558         case XFS_IOC_GETBMAPA:
 559         case XFS_IOC_GETBMAPX:
 560         case XFS_IOC_FSCOUNTS:
 561         case XFS_IOC_SET_RESBLKS:
 562         case XFS_IOC_GET_RESBLKS:
 563         case XFS_IOC_FSGROWFSLOG:
 564         case XFS_IOC_GOINGDOWN:
 565         case XFS_IOC_ERROR_INJECTION:
 566         case XFS_IOC_ERROR_CLEARALL:
 567                 return xfs_file_ioctl(filp, cmd, p);
 568 #ifndef BROKEN_X86_ALIGNMENT
 569         /* These are handled fine if no alignment issues */
 570         case XFS_IOC_ALLOCSP:
 571         case XFS_IOC_FREESP:
 572         case XFS_IOC_RESVSP:
 573         case XFS_IOC_UNRESVSP:
 574         case XFS_IOC_ALLOCSP64:
 575         case XFS_IOC_FREESP64:
 576         case XFS_IOC_RESVSP64:
 577         case XFS_IOC_UNRESVSP64:
 578         case XFS_IOC_FSGEOMETRY_V1:
 579         case XFS_IOC_FSGROWFSDATA:
 580         case XFS_IOC_FSGROWFSRT:
 581         case XFS_IOC_ZERO_RANGE:
 582                 return xfs_file_ioctl(filp, cmd, p);
 583 #else
 584         case XFS_IOC_ALLOCSP_32:
 585         case XFS_IOC_FREESP_32:
 586         case XFS_IOC_ALLOCSP64_32:
 587         case XFS_IOC_FREESP64_32:
 588         case XFS_IOC_RESVSP_32:
 589         case XFS_IOC_UNRESVSP_32:
 590         case XFS_IOC_RESVSP64_32:
 591         case XFS_IOC_UNRESVSP64_32:
 592         case XFS_IOC_ZERO_RANGE_32: {
 593                 struct xfs_flock64      bf;
 594
 595                 if (xfs_compat_flock64_copyin(&bf, arg))
 596                         return -EFAULT;
 597                 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
 598                 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
 599         }
 600         case XFS_IOC_FSGEOMETRY_V1_32:
 601                 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
 602         case XFS_IOC_FSGROWFSDATA_32: {
 603                 struct xfs_growfs_data  in;
 604
 605                 if (xfs_compat_growfs_data_copyin(&in, arg))
 606                         return -EFAULT;
 607                 error = mnt_want_write_file(filp);
 608                 if (error)
 609                         return error;
 610                 error = xfs_growfs_data(mp, &in);
 611                 mnt_drop_write_file(filp);
 612                 return error;
 613         }
 614         case XFS_IOC_FSGROWFSRT_32: {
 615                 struct xfs_growfs_rt    in;
 616
 617                 if (xfs_compat_growfs_rt_copyin(&in, arg))
 618                         return -EFAULT;
 619                 error = mnt_want_write_file(filp);
 620                 if (error)
 621                         return error;
 622                 error = xfs_growfs_rt(mp, &in);
 623                 mnt_drop_write_file(filp);
 624                 return error;
 625         }
 626 #endif
 627         /* long changes size, but xfs only copiese out 32 bits */
 628         case XFS_IOC_GETXFLAGS_32:
 629         case XFS_IOC_SETXFLAGS_32:
 630         case XFS_IOC_GETVERSION_32:
 631                 cmd = _NATIVE_IOC(cmd, long);
 632                 return xfs_file_ioctl(filp, cmd, p);
 633         case XFS_IOC_SWAPEXT_32: {
 634                 struct xfs_swapext        sxp;
 635                 struct compat_xfs_swapext __user *sxu = arg;
 636
 637                 /* Bulk copy in up to the sx_stat field, then copy bstat */
 638                 if (copy_from_user(&sxp, sxu,
 639                                    offsetof(struct xfs_swapext, sx_stat)) ||
 640                     xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
 641                         return -EFAULT;
 642                 error = mnt_want_write_file(filp);
 643                 if (error)
 644                         return error;
 645                 error = xfs_ioc_swapext(&sxp);
 646                 mnt_drop_write_file(filp);
 647                 return error;
 648         }
 649         case XFS_IOC_FSBULKSTAT_32:
 650         case XFS_IOC_FSBULKSTAT_SINGLE_32:
 651         case XFS_IOC_FSINUMBERS_32:
 652                 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
 653         case XFS_IOC_FD_TO_HANDLE_32:
 654         case XFS_IOC_PATH_TO_HANDLE_32:
 655         case XFS_IOC_PATH_TO_FSHANDLE_32: {
 656                 struct xfs_fsop_handlereq       hreq;
 657
 658                 if (xfs_compat_handlereq_copyin(&hreq, arg))
 659                         return -EFAULT;
 660                 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
 661                 return xfs_find_handle(cmd, &hreq);
 662         }
 663         case XFS_IOC_OPEN_BY_HANDLE_32: {
 664                 struct xfs_fsop_handlereq       hreq;
 665
 666                 if (xfs_compat_handlereq_copyin(&hreq, arg))
 667                         return -EFAULT;
 668                 return xfs_open_by_handle(filp, &hreq);
 669         }
 670         case XFS_IOC_READLINK_BY_HANDLE_32: {
 671                 struct xfs_fsop_handlereq       hreq;
 672
 673                 if (xfs_compat_handlereq_copyin(&hreq, arg))
 674                         return -EFAULT;
 675                 return xfs_readlink_by_handle(filp, &hreq);
 676         }
 677         case XFS_IOC_ATTRLIST_BY_HANDLE_32:
 678                 return xfs_compat_attrlist_by_handle(filp, arg);
 679         case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
 680                 return xfs_compat_attrmulti_by_handle(filp, arg);
 681         case XFS_IOC_FSSETDM_BY_HANDLE_32:
 682                 return xfs_compat_fssetdm_by_handle(filp, arg);
 683         default:
 684                 return -ENOIOCTLCMD;
 685         }
 686 }