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_sb.h"
  29 #include "xfs_ag.h"
  30 #include "xfs_mount.h"
  31 #include "xfs_inode.h"
  32 #include "xfs_itable.h"
  33 #include "xfs_error.h"
  34 #include "xfs_fsops.h"
  35 #include "xfs_alloc.h"
  36 #include "xfs_rtalloc.h"
  37 #include "xfs_attr.h"
  38 #include "xfs_ioctl.h"
  39 #include "xfs_ioctl32.h"
  40 #include "xfs_trace.h"
  41
  42 #define  _NATIVE_IOC(cmd, type) \
  43           _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
  44
  45 #ifdef BROKEN_X86_ALIGNMENT
  46 STATIC int
  47 xfs_compat_flock64_copyin(
  48         xfs_flock64_t           *bf,
  49         compat_xfs_flock64_t    __user *arg32)
  50 {
  51         if (get_user(bf->l_type,        &arg32->l_type) ||
  52             get_user(bf->l_whence,      &arg32->l_whence) ||
  53             get_user(bf->l_start,       &arg32->l_start) ||
  54             get_user(bf->l_len,         &arg32->l_len) ||
  55             get_user(bf->l_sysid,       &arg32->l_sysid) ||
  56             get_user(bf->l_pid,         &arg32->l_pid) ||
  57             copy_from_user(bf->l_pad,   &arg32->l_pad,  4*sizeof(u32)))
  58                 return -EFAULT;
  59         return 0;
  60 }
  61
  62 STATIC int
  63 xfs_compat_ioc_fsgeometry_v1(
  64         struct xfs_mount          *mp,
  65         compat_xfs_fsop_geom_v1_t __user *arg32)
  66 {
  67         xfs_fsop_geom_t           fsgeo;
  68         int                       error;
  69
  70         error = xfs_fs_geometry(mp, &fsgeo, 3);
  71         if (error)
  72                 return error;
  73         /* The 32-bit variant simply has some padding at the end */
  74         if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
  75                 return -EFAULT;
  76         return 0;
  77 }
  78
  79 STATIC int
  80 xfs_compat_growfs_data_copyin(
  81         struct xfs_growfs_data   *in,
  82         compat_xfs_growfs_data_t __user *arg32)
  83 {
  84         if (get_user(in->newblocks, &arg32->newblocks) ||
  85             get_user(in->imaxpct,   &arg32->imaxpct))
  86                 return -EFAULT;
  87         return 0;
  88 }
  89
  90 STATIC int
  91 xfs_compat_growfs_rt_copyin(
  92         struct xfs_growfs_rt     *in,
  93         compat_xfs_growfs_rt_t  __user *arg32)
  94 {
  95         if (get_user(in->newblocks, &arg32->newblocks) ||
  96             get_user(in->extsize,   &arg32->extsize))
  97                 return -EFAULT;
  98         return 0;
  99 }
 100
 101 STATIC int
 102 xfs_inumbers_fmt_compat(
 103         void                    __user *ubuffer,
 104         const struct xfs_inogrp *buffer,
 105         long                    count,
 106         long                    *written)
 107 {
 108         compat_xfs_inogrp_t     __user *p32 = ubuffer;
 109         long                    i;
 110
 111         for (i = 0; i < count; i++) {
 112                 if (put_user(buffer[i].xi_startino,   &p32[i].xi_startino) ||
 113                     put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
 114                     put_user(buffer[i].xi_allocmask,  &p32[i].xi_allocmask))
 115                         return -EFAULT;
 116         }
 117         *written = count * sizeof(*p32);
 118         return 0;
 119 }
 120
 121 #else
 122 #define xfs_inumbers_fmt_compat xfs_inumbers_fmt
 123 #endif  /* BROKEN_X86_ALIGNMENT */
 124
 125 STATIC int
 126 xfs_ioctl32_bstime_copyin(
 127         xfs_bstime_t            *bstime,
 128         compat_xfs_bstime_t     __user *bstime32)
 129 {
 130         compat_time_t           sec32;  /* tv_sec differs on 64 vs. 32 */
 131
 132         if (get_user(sec32,             &bstime32->tv_sec)      ||
 133             get_user(bstime->tv_nsec,   &bstime32->tv_nsec))
 134                 return -EFAULT;
 135         bstime->tv_sec = sec32;
 136         return 0;
 137 }
 138
 139 /* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
 140 STATIC int
 141 xfs_ioctl32_bstat_copyin(
 142         xfs_bstat_t             *bstat,
 143         compat_xfs_bstat_t      __user *bstat32)
 144 {
 145         if (get_user(bstat->bs_ino,     &bstat32->bs_ino)       ||
 146             get_user(bstat->bs_mode,    &bstat32->bs_mode)      ||
 147             get_user(bstat->bs_nlink,   &bstat32->bs_nlink)     ||
 148             get_user(bstat->bs_uid,     &bstat32->bs_uid)       ||
 149             get_user(bstat->bs_gid,     &bstat32->bs_gid)       ||
 150             get_user(bstat->bs_rdev,    &bstat32->bs_rdev)      ||
 151             get_user(bstat->bs_blksize, &bstat32->bs_blksize)   ||
 152             get_user(bstat->bs_size,    &bstat32->bs_size)      ||
 153             xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
 154             xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
 155             xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
 156             get_user(bstat->bs_blocks,  &bstat32->bs_size)      ||
 157             get_user(bstat->bs_xflags,  &bstat32->bs_size)      ||
 158             get_user(bstat->bs_extsize, &bstat32->bs_extsize)   ||
 159             get_user(bstat->bs_extents, &bstat32->bs_extents)   ||
 160             get_user(bstat->bs_gen,     &bstat32->bs_gen)       ||
 161             get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
 162             get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
 163             get_user(bstat->bs_forkoff, &bstat32->bs_forkoff)   ||
 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 -EFAULT;
 168         return 0;
 169 }
 170
 171 /* XFS_IOC_FSBULKSTAT and friends */
 172
 173 STATIC int
 174 xfs_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 -EFAULT;
 184         return 0;
 185 }
 186
 187 /* Return 0 on success or positive error (to xfs_bulkstat()) */
 188 STATIC int
 189 xfs_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 -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_forkoff,  &p32->bs_forkoff)     ||
 219             put_user(buffer->bs_dmevmask, &p32->bs_dmevmask)    ||
 220             put_user(buffer->bs_dmstate,  &p32->bs_dmstate)     ||
 221             put_user(buffer->bs_aextents, &p32->bs_aextents))
 222                 return -EFAULT;
 223         if (ubused)
 224                 *ubused = sizeof(*p32);
 225         return 0;
 226 }
 227
 228 STATIC int
 229 xfs_bulkstat_one_compat(
 230         xfs_mount_t     *mp,            /* mount point for filesystem */
 231         xfs_ino_t       ino,            /* inode number to get data for */
 232         void            __user *buffer, /* buffer to place output in */
 233         int             ubsize,         /* size of buffer */
 234         int             *ubused,        /* bytes used by me */
 235         int             *stat)          /* BULKSTAT_RV_... */
 236 {
 237         return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
 238                                     xfs_bulkstat_one_fmt_compat,
 239                                     ubused, stat);
 240 }
 241
 242 /* copied from xfs_ioctl.c */
 243 STATIC int
 244 xfs_compat_ioc_bulkstat(
 245         xfs_mount_t               *mp,
 246         unsigned int              cmd,
 247         compat_xfs_fsop_bulkreq_t __user *p32)
 248 {
 249         u32                     addr;
 250         xfs_fsop_bulkreq_t      bulkreq;
 251         int                     count;  /* # of records returned */
 252         xfs_ino_t               inlast; /* last inode number */
 253         int                     done;
 254         int                     error;
 255
 256         /* done = 1 if there are more stats to get and if bulkstat */
 257         /* should be called again (unused here, but used in dmapi) */
 258
 259         if (!capable(CAP_SYS_ADMIN))
 260                 return -EPERM;
 261
 262         if (XFS_FORCED_SHUTDOWN(mp))
 263                 return -EIO;
 264
 265         if (get_user(addr, &p32->lastip))
 266                 return -EFAULT;
 267         bulkreq.lastip = compat_ptr(addr);
 268         if (get_user(bulkreq.icount, &p32->icount) ||
 269             get_user(addr, &p32->ubuffer))
 270                 return -EFAULT;
 271         bulkreq.ubuffer = compat_ptr(addr);
 272         if (get_user(addr, &p32->ocount))
 273                 return -EFAULT;
 274         bulkreq.ocount = compat_ptr(addr);
 275
 276         if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
 277                 return -EFAULT;
 278
 279         if ((count = bulkreq.icount) <= 0)
 280                 return -EINVAL;
 281
 282         if (bulkreq.ubuffer == NULL)
 283                 return -EINVAL;
 284
 285         if (cmd == XFS_IOC_FSINUMBERS_32) {
 286                 error = xfs_inumbers(mp, &inlast, &count,
 287                                 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
 288         } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
 289                 int res;
 290
 291                 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
 292                                 sizeof(compat_xfs_bstat_t), NULL, &res);
 293         } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
 294                 error = xfs_bulkstat(mp, &inlast, &count,
 295                         xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
 296                         bulkreq.ubuffer, &done);
 297         } else
 298                 error = -EINVAL;
 299         if (error)
 300                 return error;
 301
 302         if (bulkreq.ocount != NULL) {
 303                 if (copy_to_user(bulkreq.lastip, &inlast,
 304                                                 sizeof(xfs_ino_t)))
 305                         return -EFAULT;
 306
 307                 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
 308                         return -EFAULT;
 309         }
 310
 311         return 0;
 312 }
 313
 314 STATIC int
 315 xfs_compat_handlereq_copyin(
 316         xfs_fsop_handlereq_t            *hreq,
 317         compat_xfs_fsop_handlereq_t     __user *arg32)
 318 {
 319         compat_xfs_fsop_handlereq_t     hreq32;
 320
 321         if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
 322                 return -EFAULT;
 323
 324         hreq->fd = hreq32.fd;
 325         hreq->path = compat_ptr(hreq32.path);
 326         hreq->oflags = hreq32.oflags;
 327         hreq->ihandle = compat_ptr(hreq32.ihandle);
 328         hreq->ihandlen = hreq32.ihandlen;
 329         hreq->ohandle = compat_ptr(hreq32.ohandle);
 330         hreq->ohandlen = compat_ptr(hreq32.ohandlen);
 331
 332         return 0;
 333 }
 334
 335 STATIC struct dentry *
 336 xfs_compat_handlereq_to_dentry(
 337         struct file             *parfilp,
 338         compat_xfs_fsop_handlereq_t *hreq)
 339 {
 340         return xfs_handle_to_dentry(parfilp,
 341                         compat_ptr(hreq->ihandle), hreq->ihandlen);
 342 }
 343
 344 STATIC int
 345 xfs_compat_attrlist_by_handle(
 346         struct file             *parfilp,
 347         void                    __user *arg)
 348 {
 349         int                     error;
 350         attrlist_cursor_kern_t  *cursor;
 351         compat_xfs_fsop_attrlist_handlereq_t al_hreq;
 352         struct dentry           *dentry;
 353         char                    *kbuf;
 354
 355         if (!capable(CAP_SYS_ADMIN))
 356                 return -EPERM;
 357         if (copy_from_user(&al_hreq, arg,
 358                            sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
 359                 return -EFAULT;
 360         if (al_hreq.buflen < sizeof(struct attrlist) ||
 361             al_hreq.buflen > XATTR_LIST_MAX)
 362                 return -EINVAL;
 363
 364         /*
 365          * Reject flags, only allow namespaces.
 366          */
 367         if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
 368                 return -EINVAL;
 369
 370         dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
 371         if (IS_ERR(dentry))
 372                 return PTR_ERR(dentry);
 373
 374         error = -ENOMEM;
 375         kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
 376         if (!kbuf)
 377                 goto out_dput;
 378
 379         cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
 380         error = xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
 381                                         al_hreq.flags, cursor);
 382         if (error)
 383                 goto out_kfree;
 384
 385         if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
 386                 error = -EFAULT;
 387
 388 out_kfree:
 389         kmem_free(kbuf);
 390 out_dput:
 391         dput(dentry);
 392         return error;
 393 }
 394
 395 STATIC int
 396 xfs_compat_attrmulti_by_handle(
 397         struct file                             *parfilp,
 398         void                                    __user *arg)
 399 {
 400         int                                     error;
 401         compat_xfs_attr_multiop_t               *ops;
 402         compat_xfs_fsop_attrmulti_handlereq_t   am_hreq;
 403         struct dentry                           *dentry;
 404         unsigned int                            i, size;
 405         unsigned char                           *attr_name;
 406
 407         if (!capable(CAP_SYS_ADMIN))
 408                 return -EPERM;
 409         if (copy_from_user(&am_hreq, arg,
 410                            sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
 411                 return -EFAULT;
 412
 413         /* overflow check */
 414         if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
 415                 return -E2BIG;
 416
 417         dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
 418         if (IS_ERR(dentry))
 419                 return PTR_ERR(dentry);
 420
 421         error = -E2BIG;
 422         size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
 423         if (!size || size > 16 * PAGE_SIZE)
 424                 goto out_dput;
 425
 426         ops = memdup_user(compat_ptr(am_hreq.ops), size);
 427         if (IS_ERR(ops)) {
 428                 error = -PTR_ERR(ops);
 429                 goto out_dput;
 430         }
 431
 432         error = -ENOMEM;
 433         attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
 434         if (!attr_name)
 435                 goto out_kfree_ops;
 436
 437         error = 0;
 438         for (i = 0; i < am_hreq.opcount; i++) {
 439                 ops[i].am_error = strncpy_from_user((char *)attr_name,
 440                                 compat_ptr(ops[i].am_attrname),
 441                                 MAXNAMELEN);
 442                 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
 443                         error = -ERANGE;
 444                 if (ops[i].am_error < 0)
 445                         break;
 446
 447                 switch (ops[i].am_opcode) {
 448                 case ATTR_OP_GET:
 449                         ops[i].am_error = xfs_attrmulti_attr_get(
 450                                         dentry->d_inode, attr_name,
 451                                         compat_ptr(ops[i].am_attrvalue),
 452                                         &ops[i].am_length, ops[i].am_flags);
 453                         break;
 454                 case ATTR_OP_SET:
 455                         ops[i].am_error = mnt_want_write_file(parfilp);
 456                         if (ops[i].am_error)
 457                                 break;
 458                         ops[i].am_error = xfs_attrmulti_attr_set(
 459                                         dentry->d_inode, attr_name,
 460                                         compat_ptr(ops[i].am_attrvalue),
 461                                         ops[i].am_length, ops[i].am_flags);
 462                         mnt_drop_write_file(parfilp);
 463                         break;
 464                 case ATTR_OP_REMOVE:
 465                         ops[i].am_error = mnt_want_write_file(parfilp);
 466                         if (ops[i].am_error)
 467                                 break;
 468                         ops[i].am_error = xfs_attrmulti_attr_remove(
 469                                         dentry->d_inode, attr_name,
 470                                         ops[i].am_flags);
 471                         mnt_drop_write_file(parfilp);
 472                         break;
 473                 default:
 474                         ops[i].am_error = -EINVAL;
 475                 }
 476         }
 477
 478         if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
 479                 error = -EFAULT;
 480
 481         kfree(attr_name);
 482  out_kfree_ops:
 483         kfree(ops);
 484  out_dput:
 485         dput(dentry);
 486         return error;
 487 }
 488
 489 STATIC int
 490 xfs_compat_fssetdm_by_handle(
 491         struct file             *parfilp,
 492         void                    __user *arg)
 493 {
 494         int                     error;
 495         struct fsdmidata        fsd;
 496         compat_xfs_fsop_setdm_handlereq_t dmhreq;
 497         struct dentry           *dentry;
 498
 499         if (!capable(CAP_MKNOD))
 500                 return -EPERM;
 501         if (copy_from_user(&dmhreq, arg,
 502                            sizeof(compat_xfs_fsop_setdm_handlereq_t)))
 503                 return -EFAULT;
 504
 505         dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
 506         if (IS_ERR(dentry))
 507                 return PTR_ERR(dentry);
 508
 509         if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
 510                 error = -EPERM;
 511                 goto out;
 512         }
 513
 514         if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
 515                 error = -EFAULT;
 516                 goto out;
 517         }
 518
 519         error = xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
 520                                  fsd.fsd_dmstate);
 521
 522 out:
 523         dput(dentry);
 524         return error;
 525 }
 526
 527 long
 528 xfs_file_compat_ioctl(
 529         struct file             *filp,
 530         unsigned                cmd,
 531         unsigned long           p)
 532 {
 533         struct inode            *inode = file_inode(filp);
 534         struct xfs_inode        *ip = XFS_I(inode);
 535         struct xfs_mount        *mp = ip->i_mount;
 536         void                    __user *arg = (void __user *)p;
 537         int                     ioflags = 0;
 538         int                     error;
 539
 540         if (filp->f_mode & FMODE_NOCMTIME)
 541                 ioflags |= XFS_IO_INVIS;
 542
 543         trace_xfs_file_compat_ioctl(ip);
 544
 545         switch (cmd) {
 546         /* No size or alignment issues on any arch */
 547         case XFS_IOC_DIOINFO:
 548         case XFS_IOC_FSGEOMETRY:
 549         case XFS_IOC_FSGETXATTR:
 550         case XFS_IOC_FSSETXATTR:
 551         case XFS_IOC_FSGETXATTRA:
 552         case XFS_IOC_FSSETDM:
 553         case XFS_IOC_GETBMAP:
 554         case XFS_IOC_GETBMAPA:
 555         case XFS_IOC_GETBMAPX:
 556         case XFS_IOC_FSCOUNTS:
 557         case XFS_IOC_SET_RESBLKS:
 558         case XFS_IOC_GET_RESBLKS:
 559         case XFS_IOC_FSGROWFSLOG:
 560         case XFS_IOC_GOINGDOWN:
 561         case XFS_IOC_ERROR_INJECTION:
 562         case XFS_IOC_ERROR_CLEARALL:
 563                 return xfs_file_ioctl(filp, cmd, p);
 564 #ifndef BROKEN_X86_ALIGNMENT
 565         /* These are handled fine if no alignment issues */
 566         case XFS_IOC_ALLOCSP:
 567         case XFS_IOC_FREESP:
 568         case XFS_IOC_RESVSP:
 569         case XFS_IOC_UNRESVSP:
 570         case XFS_IOC_ALLOCSP64:
 571         case XFS_IOC_FREESP64:
 572         case XFS_IOC_RESVSP64:
 573         case XFS_IOC_UNRESVSP64:
 574         case XFS_IOC_FSGEOMETRY_V1:
 575         case XFS_IOC_FSGROWFSDATA:
 576         case XFS_IOC_FSGROWFSRT:
 577         case XFS_IOC_ZERO_RANGE:
 578                 return xfs_file_ioctl(filp, cmd, p);
 579 #else
 580         case XFS_IOC_ALLOCSP_32:
 581         case XFS_IOC_FREESP_32:
 582         case XFS_IOC_ALLOCSP64_32:
 583         case XFS_IOC_FREESP64_32:
 584         case XFS_IOC_RESVSP_32:
 585         case XFS_IOC_UNRESVSP_32:
 586         case XFS_IOC_RESVSP64_32:
 587         case XFS_IOC_UNRESVSP64_32:
 588         case XFS_IOC_ZERO_RANGE_32: {
 589                 struct xfs_flock64      bf;
 590
 591                 if (xfs_compat_flock64_copyin(&bf, arg))
 592                         return -EFAULT;
 593                 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
 594                 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
 595         }
 596         case XFS_IOC_FSGEOMETRY_V1_32:
 597                 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
 598         case XFS_IOC_FSGROWFSDATA_32: {
 599                 struct xfs_growfs_data  in;
 600
 601                 if (xfs_compat_growfs_data_copyin(&in, arg))
 602                         return -EFAULT;
 603                 error = mnt_want_write_file(filp);
 604                 if (error)
 605                         return error;
 606                 error = xfs_growfs_data(mp, &in);
 607                 mnt_drop_write_file(filp);
 608                 return error;
 609         }
 610         case XFS_IOC_FSGROWFSRT_32: {
 611                 struct xfs_growfs_rt    in;
 612
 613                 if (xfs_compat_growfs_rt_copyin(&in, arg))
 614                         return -EFAULT;
 615                 error = mnt_want_write_file(filp);
 616                 if (error)
 617                         return error;
 618                 error = xfs_growfs_rt(mp, &in);
 619                 mnt_drop_write_file(filp);
 620                 return error;
 621         }
 622 #endif
 623         /* long changes size, but xfs only copiese out 32 bits */
 624         case XFS_IOC_GETXFLAGS_32:
 625         case XFS_IOC_SETXFLAGS_32:
 626         case XFS_IOC_GETVERSION_32:
 627                 cmd = _NATIVE_IOC(cmd, long);
 628                 return xfs_file_ioctl(filp, cmd, p);
 629         case XFS_IOC_SWAPEXT_32: {
 630                 struct xfs_swapext        sxp;
 631                 struct compat_xfs_swapext __user *sxu = arg;
 632
 633                 /* Bulk copy in up to the sx_stat field, then copy bstat */
 634                 if (copy_from_user(&sxp, sxu,
 635                                    offsetof(struct xfs_swapext, sx_stat)) ||
 636                     xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
 637                         return -EFAULT;
 638                 error = mnt_want_write_file(filp);
 639                 if (error)
 640                         return error;
 641                 error = xfs_ioc_swapext(&sxp);
 642                 mnt_drop_write_file(filp);
 643                 return error;
 644         }
 645         case XFS_IOC_FSBULKSTAT_32:
 646         case XFS_IOC_FSBULKSTAT_SINGLE_32:
 647         case XFS_IOC_FSINUMBERS_32:
 648                 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
 649         case XFS_IOC_FD_TO_HANDLE_32:
 650         case XFS_IOC_PATH_TO_HANDLE_32:
 651         case XFS_IOC_PATH_TO_FSHANDLE_32: {
 652                 struct xfs_fsop_handlereq       hreq;
 653
 654                 if (xfs_compat_handlereq_copyin(&hreq, arg))
 655                         return -EFAULT;
 656                 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
 657                 return xfs_find_handle(cmd, &hreq);
 658         }
 659         case XFS_IOC_OPEN_BY_HANDLE_32: {
 660                 struct xfs_fsop_handlereq       hreq;
 661
 662                 if (xfs_compat_handlereq_copyin(&hreq, arg))
 663                         return -EFAULT;
 664                 return xfs_open_by_handle(filp, &hreq);
 665         }
 666         case XFS_IOC_READLINK_BY_HANDLE_32: {
 667                 struct xfs_fsop_handlereq       hreq;
 668
 669                 if (xfs_compat_handlereq_copyin(&hreq, arg))
 670                         return -EFAULT;
 671                 return xfs_readlink_by_handle(filp, &hreq);
 672         }
 673         case XFS_IOC_ATTRLIST_BY_HANDLE_32:
 674                 return xfs_compat_attrlist_by_handle(filp, arg);
 675         case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
 676                 return xfs_compat_attrmulti_by_handle(filp, arg);
 677         case XFS_IOC_FSSETDM_BY_HANDLE_32:
 678                 return xfs_compat_fssetdm_by_handle(filp, arg);
 679         default:
 680                 return -ENOIOCTLCMD;
 681         }
 682 }