fs/xfs/linux-2.6/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_bit.h"
  26 #include "xfs_log.h"
  27 #include "xfs_inum.h"
  28 #include "xfs_trans.h"
  29 #include "xfs_sb.h"
  30 #include "xfs_ag.h"
  31 #include "xfs_dir2.h"
  32 #include "xfs_dmapi.h"
  33 #include "xfs_mount.h"
  34 #include "xfs_bmap_btree.h"
  35 #include "xfs_attr_sf.h"
  36 #include "xfs_dir2_sf.h"
  37 #include "xfs_vnode.h"
  38 #include "xfs_dinode.h"
  39 #include "xfs_inode.h"
  40 #include "xfs_itable.h"
  41 #include "xfs_error.h"
  42 #include "xfs_dfrag.h"
  43 #include "xfs_vnodeops.h"
  44 #include "xfs_fsops.h"
  45 #include "xfs_alloc.h"
  46 #include "xfs_rtalloc.h"
  47 #include "xfs_attr.h"
  48 #include "xfs_ioctl.h"
  49 #include "xfs_ioctl32.h"
  50 #include "xfs_trace.h"
  51
  52 #define  _NATIVE_IOC(cmd, type) \
  53           _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
  54
  55 #ifdef BROKEN_X86_ALIGNMENT
  56 STATIC int
  57 xfs_compat_flock64_copyin(
  58         xfs_flock64_t           *bf,
  59         compat_xfs_flock64_t    __user *arg32)
  60 {
  61         if (get_user(bf->l_type,        &arg32->l_type) ||
  62             get_user(bf->l_whence,      &arg32->l_whence) ||
  63             get_user(bf->l_start,       &arg32->l_start) ||
  64             get_user(bf->l_len,         &arg32->l_len) ||
  65             get_user(bf->l_sysid,       &arg32->l_sysid) ||
  66             get_user(bf->l_pid,         &arg32->l_pid) ||
  67             copy_from_user(bf->l_pad,   &arg32->l_pad,  4*sizeof(u32)))
  68                 return -XFS_ERROR(EFAULT);
  69         return 0;
  70 }
  71
  72 STATIC int
  73 xfs_compat_ioc_fsgeometry_v1(
  74         struct xfs_mount          *mp,
  75         compat_xfs_fsop_geom_v1_t __user *arg32)
  76 {
  77         xfs_fsop_geom_t           fsgeo;
  78         int                       error;
  79
  80         error = xfs_fs_geometry(mp, &fsgeo, 3);
  81         if (error)
  82                 return -error;
  83         /* The 32-bit variant simply has some padding at the end */
  84         if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
  85                 return -XFS_ERROR(EFAULT);
  86         return 0;
  87 }
  88
  89 STATIC int
  90 xfs_compat_growfs_data_copyin(
  91         struct xfs_growfs_data   *in,
  92         compat_xfs_growfs_data_t __user *arg32)
  93 {
  94         if (get_user(in->newblocks, &arg32->newblocks) ||
  95             get_user(in->imaxpct,   &arg32->imaxpct))
  96                 return -XFS_ERROR(EFAULT);
  97         return 0;
  98 }
  99
 100 STATIC int
 101 xfs_compat_growfs_rt_copyin(
 102         struct xfs_growfs_rt     *in,
 103         compat_xfs_growfs_rt_t  __user *arg32)
 104 {
 105         if (get_user(in->newblocks, &arg32->newblocks) ||
 106             get_user(in->extsize,   &arg32->extsize))
 107                 return -XFS_ERROR(EFAULT);
 108         return 0;
 109 }
 110
 111 STATIC int
 112 xfs_inumbers_fmt_compat(
 113         void                    __user *ubuffer,
 114         const xfs_inogrp_t      *buffer,
 115         long                    count,
 116         long                    *written)
 117 {
 118         compat_xfs_inogrp_t     __user *p32 = ubuffer;
 119         long                    i;
 120
 121         for (i = 0; i < count; i++) {
 122                 if (put_user(buffer[i].xi_startino,   &p32[i].xi_startino) ||
 123                     put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
 124                     put_user(buffer[i].xi_allocmask,  &p32[i].xi_allocmask))
 125                         return -XFS_ERROR(EFAULT);
 126         }
 127         *written = count * sizeof(*p32);
 128         return 0;
 129 }
 130
 131 #else
 132 #define xfs_inumbers_fmt_compat xfs_inumbers_fmt
 133 #endif  /* BROKEN_X86_ALIGNMENT */
 134
 135 STATIC int
 136 xfs_ioctl32_bstime_copyin(
 137         xfs_bstime_t            *bstime,
 138         compat_xfs_bstime_t     __user *bstime32)
 139 {
 140         compat_time_t           sec32;  /* tv_sec differs on 64 vs. 32 */
 141
 142         if (get_user(sec32,             &bstime32->tv_sec)      ||
 143             get_user(bstime->tv_nsec,   &bstime32->tv_nsec))
 144                 return -XFS_ERROR(EFAULT);
 145         bstime->tv_sec = sec32;
 146         return 0;
 147 }
 148
 149 /* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
 150 STATIC int
 151 xfs_ioctl32_bstat_copyin(
 152         xfs_bstat_t             *bstat,
 153         compat_xfs_bstat_t      __user *bstat32)
 154 {
 155         if (get_user(bstat->bs_ino,     &bstat32->bs_ino)       ||
 156             get_user(bstat->bs_mode,    &bstat32->bs_mode)      ||
 157             get_user(bstat->bs_nlink,   &bstat32->bs_nlink)     ||
 158             get_user(bstat->bs_uid,     &bstat32->bs_uid)       ||
 159             get_user(bstat->bs_gid,     &bstat32->bs_gid)       ||
 160             get_user(bstat->bs_rdev,    &bstat32->bs_rdev)      ||
 161             get_user(bstat->bs_blksize, &bstat32->bs_blksize)   ||
 162             get_user(bstat->bs_size,    &bstat32->bs_size)      ||
 163             xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
 164             xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
 165             xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
 166             get_user(bstat->bs_blocks,  &bstat32->bs_size)      ||
 167             get_user(bstat->bs_xflags,  &bstat32->bs_size)      ||
 168             get_user(bstat->bs_extsize, &bstat32->bs_extsize)   ||
 169             get_user(bstat->bs_extents, &bstat32->bs_extents)   ||
 170             get_user(bstat->bs_gen,     &bstat32->bs_gen)       ||
 171             get_user(bstat->bs_projid,  &bstat32->bs_projid)    ||
 172             get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
 173             get_user(bstat->bs_dmstate, &bstat32->bs_dmstate)   ||
 174             get_user(bstat->bs_aextents, &bstat32->bs_aextents))
 175                 return -XFS_ERROR(EFAULT);
 176         return 0;
 177 }
 178
 179 /* XFS_IOC_FSBULKSTAT and friends */
 180
 181 STATIC int
 182 xfs_bstime_store_compat(
 183         compat_xfs_bstime_t     __user *p32,
 184         const xfs_bstime_t      *p)
 185 {
 186         __s32                   sec32;
 187
 188         sec32 = p->tv_sec;
 189         if (put_user(sec32, &p32->tv_sec) ||
 190             put_user(p->tv_nsec, &p32->tv_nsec))
 191                 return -XFS_ERROR(EFAULT);
 192         return 0;
 193 }
 194
 195 /* Return 0 on success or positive error (to xfs_bulkstat()) */
 196 STATIC int
 197 xfs_bulkstat_one_fmt_compat(
 198         void                    __user *ubuffer,
 199         int                     ubsize,
 200         int                     *ubused,
 201         const xfs_bstat_t       *buffer)
 202 {
 203         compat_xfs_bstat_t      __user *p32 = ubuffer;
 204
 205         if (ubsize < sizeof(*p32))
 206                 return XFS_ERROR(ENOMEM);
 207
 208         if (put_user(buffer->bs_ino,      &p32->bs_ino)         ||
 209             put_user(buffer->bs_mode,     &p32->bs_mode)        ||
 210             put_user(buffer->bs_nlink,    &p32->bs_nlink)       ||
 211             put_user(buffer->bs_uid,      &p32->bs_uid)         ||
 212             put_user(buffer->bs_gid,      &p32->bs_gid)         ||
 213             put_user(buffer->bs_rdev,     &p32->bs_rdev)        ||
 214             put_user(buffer->bs_blksize,  &p32->bs_blksize)     ||
 215             put_user(buffer->bs_size,     &p32->bs_size)        ||
 216             xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
 217             xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
 218             xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
 219             put_user(buffer->bs_blocks,   &p32->bs_blocks)      ||
 220             put_user(buffer->bs_xflags,   &p32->bs_xflags)      ||
 221             put_user(buffer->bs_extsize,  &p32->bs_extsize)     ||
 222             put_user(buffer->bs_extents,  &p32->bs_extents)     ||
 223             put_user(buffer->bs_gen,      &p32->bs_gen)         ||
 224             put_user(buffer->bs_projid,   &p32->bs_projid)      ||
 225             put_user(buffer->bs_dmevmask, &p32->bs_dmevmask)    ||
 226             put_user(buffer->bs_dmstate,  &p32->bs_dmstate)     ||
 227             put_user(buffer->bs_aextents, &p32->bs_aextents))
 228                 return XFS_ERROR(EFAULT);
 229         if (ubused)
 230                 *ubused = sizeof(*p32);
 231         return 0;
 232 }
 233
 234 STATIC int
 235 xfs_bulkstat_one_compat(
 236         xfs_mount_t     *mp,            /* mount point for filesystem */
 237         xfs_ino_t       ino,            /* inode number to get data for */
 238         void            __user *buffer, /* buffer to place output in */
 239         int             ubsize,         /* size of buffer */
 240         void            *private_data,  /* my private data */
 241         xfs_daddr_t     bno,            /* starting bno of inode cluster */
 242         int             *ubused,        /* bytes used by me */
 243         void            *dibuff,        /* on-disk inode buffer */
 244         int             *stat)          /* BULKSTAT_RV_... */
 245 {
 246         return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
 247                                     xfs_bulkstat_one_fmt_compat, bno,
 248                                     ubused, dibuff, stat);
 249 }
 250
 251 /* copied from xfs_ioctl.c */
 252 STATIC int
 253 xfs_compat_ioc_bulkstat(
 254         xfs_mount_t               *mp,
 255         unsigned int              cmd,
 256         compat_xfs_fsop_bulkreq_t __user *p32)
 257 {
 258         u32                     addr;
 259         xfs_fsop_bulkreq_t      bulkreq;
 260         int                     count;  /* # of records returned */
 261         xfs_ino_t               inlast; /* last inode number */
 262         int                     done;
 263         int                     error;
 264
 265         /* done = 1 if there are more stats to get and if bulkstat */
 266         /* should be called again (unused here, but used in dmapi) */
 267
 268         if (!capable(CAP_SYS_ADMIN))
 269                 return -XFS_ERROR(EPERM);
 270
 271         if (XFS_FORCED_SHUTDOWN(mp))
 272                 return -XFS_ERROR(EIO);
 273
 274         if (get_user(addr, &p32->lastip))
 275                 return -XFS_ERROR(EFAULT);
 276         bulkreq.lastip = compat_ptr(addr);
 277         if (get_user(bulkreq.icount, &p32->icount) ||
 278             get_user(addr, &p32->ubuffer))
 279                 return -XFS_ERROR(EFAULT);
 280         bulkreq.ubuffer = compat_ptr(addr);
 281         if (get_user(addr, &p32->ocount))
 282                 return -XFS_ERROR(EFAULT);
 283         bulkreq.ocount = compat_ptr(addr);
 284
 285         if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
 286                 return -XFS_ERROR(EFAULT);
 287
 288         if ((count = bulkreq.icount) <= 0)
 289                 return -XFS_ERROR(EINVAL);
 290
 291         if (bulkreq.ubuffer == NULL)
 292                 return -XFS_ERROR(EINVAL);
 293
 294         if (cmd == XFS_IOC_FSINUMBERS_32) {
 295                 error = xfs_inumbers(mp, &inlast, &count,
 296                                 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
 297         } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
 298                 int res;
 299
 300                 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
 301                                 sizeof(compat_xfs_bstat_t),
 302                                 NULL, 0, NULL, NULL, &res);
 303         } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
 304                 error = xfs_bulkstat(mp, &inlast, &count,
 305                         xfs_bulkstat_one_compat, NULL,
 306                         sizeof(compat_xfs_bstat_t), bulkreq.ubuffer,
 307                         BULKSTAT_FG_QUICK, &done);
 308         } else
 309                 error = XFS_ERROR(EINVAL);
 310         if (error)
 311                 return -error;
 312
 313         if (bulkreq.ocount != NULL) {
 314                 if (copy_to_user(bulkreq.lastip, &inlast,
 315                                                 sizeof(xfs_ino_t)))
 316                         return -XFS_ERROR(EFAULT);
 317
 318                 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
 319                         return -XFS_ERROR(EFAULT);
 320         }
 321
 322         return 0;
 323 }
 324
 325 STATIC int
 326 xfs_compat_handlereq_copyin(
 327         xfs_fsop_handlereq_t            *hreq,
 328         compat_xfs_fsop_handlereq_t     __user *arg32)
 329 {
 330         compat_xfs_fsop_handlereq_t     hreq32;
 331
 332         if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
 333                 return -XFS_ERROR(EFAULT);
 334
 335         hreq->fd = hreq32.fd;
 336         hreq->path = compat_ptr(hreq32.path);
 337         hreq->oflags = hreq32.oflags;
 338         hreq->ihandle = compat_ptr(hreq32.ihandle);
 339         hreq->ihandlen = hreq32.ihandlen;
 340         hreq->ohandle = compat_ptr(hreq32.ohandle);
 341         hreq->ohandlen = compat_ptr(hreq32.ohandlen);
 342
 343         return 0;
 344 }
 345
 346 STATIC struct dentry *
 347 xfs_compat_handlereq_to_dentry(
 348         struct file             *parfilp,
 349         compat_xfs_fsop_handlereq_t *hreq)
 350 {
 351         return xfs_handle_to_dentry(parfilp,
 352                         compat_ptr(hreq->ihandle), hreq->ihandlen);
 353 }
 354
 355 STATIC int
 356 xfs_compat_attrlist_by_handle(
 357         struct file             *parfilp,
 358         void                    __user *arg)
 359 {
 360         int                     error;
 361         attrlist_cursor_kern_t  *cursor;
 362         compat_xfs_fsop_attrlist_handlereq_t al_hreq;
 363         struct dentry           *dentry;
 364         char                    *kbuf;
 365
 366         if (!capable(CAP_SYS_ADMIN))
 367                 return -XFS_ERROR(EPERM);
 368         if (copy_from_user(&al_hreq, arg,
 369                            sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
 370                 return -XFS_ERROR(EFAULT);
 371         if (al_hreq.buflen > XATTR_LIST_MAX)
 372                 return -XFS_ERROR(EINVAL);
 373
 374         /*
 375          * Reject flags, only allow namespaces.
 376          */
 377         if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
 378                 return -XFS_ERROR(EINVAL);
 379
 380         dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
 381         if (IS_ERR(dentry))
 382                 return PTR_ERR(dentry);
 383
 384         error = -ENOMEM;
 385         kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
 386         if (!kbuf)
 387                 goto out_dput;
 388
 389         cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
 390         error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
 391                                         al_hreq.flags, cursor);
 392         if (error)
 393                 goto out_kfree;
 394
 395         if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
 396                 error = -EFAULT;
 397
 398  out_kfree:
 399         kfree(kbuf);
 400  out_dput:
 401         dput(dentry);
 402         return error;
 403 }
 404
 405 STATIC int
 406 xfs_compat_attrmulti_by_handle(
 407         struct file                             *parfilp,
 408         void                                    __user *arg)
 409 {
 410         int                                     error;
 411         compat_xfs_attr_multiop_t               *ops;
 412         compat_xfs_fsop_attrmulti_handlereq_t   am_hreq;
 413         struct dentry                           *dentry;
 414         unsigned int                            i, size;
 415         unsigned char                           *attr_name;
 416
 417         if (!capable(CAP_SYS_ADMIN))
 418                 return -XFS_ERROR(EPERM);
 419         if (copy_from_user(&am_hreq, arg,
 420                            sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
 421                 return -XFS_ERROR(EFAULT);
 422
 423         /* overflow check */
 424         if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
 425                 return -E2BIG;
 426
 427         dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
 428         if (IS_ERR(dentry))
 429                 return PTR_ERR(dentry);
 430
 431         error = E2BIG;
 432         size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
 433         if (!size || size > 16 * PAGE_SIZE)
 434                 goto out_dput;
 435
 436         ops = memdup_user(compat_ptr(am_hreq.ops), size);
 437         if (IS_ERR(ops)) {
 438                 error = PTR_ERR(ops);
 439                 goto out_dput;
 440         }
 441
 442         attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
 443         if (!attr_name)
 444                 goto out_kfree_ops;
 445
 446         error = 0;
 447         for (i = 0; i < am_hreq.opcount; i++) {
 448                 ops[i].am_error = strncpy_from_user((char *)attr_name,
 449                                 compat_ptr(ops[i].am_attrname),
 450                                 MAXNAMELEN);
 451                 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
 452                         error = -ERANGE;
 453                 if (ops[i].am_error < 0)
 454                         break;
 455
 456                 switch (ops[i].am_opcode) {
 457                 case ATTR_OP_GET:
 458                         ops[i].am_error = xfs_attrmulti_attr_get(
 459                                         dentry->d_inode, attr_name,
 460                                         compat_ptr(ops[i].am_attrvalue),
 461                                         &ops[i].am_length, ops[i].am_flags);
 462                         break;
 463                 case ATTR_OP_SET:
 464                         ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
 465                         if (ops[i].am_error)
 466                                 break;
 467                         ops[i].am_error = xfs_attrmulti_attr_set(
 468                                         dentry->d_inode, attr_name,
 469                                         compat_ptr(ops[i].am_attrvalue),
 470                                         ops[i].am_length, ops[i].am_flags);
 471                         mnt_drop_write(parfilp->f_path.mnt);
 472                         break;
 473                 case ATTR_OP_REMOVE:
 474                         ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
 475                         if (ops[i].am_error)
 476                                 break;
 477                         ops[i].am_error = xfs_attrmulti_attr_remove(
 478                                         dentry->d_inode, attr_name,
 479                                         ops[i].am_flags);
 480                         mnt_drop_write(parfilp->f_path.mnt);
 481                         break;
 482                 default:
 483                         ops[i].am_error = EINVAL;
 484                 }
 485         }
 486
 487         if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
 488                 error = XFS_ERROR(EFAULT);
 489
 490         kfree(attr_name);
 491  out_kfree_ops:
 492         kfree(ops);
 493  out_dput:
 494         dput(dentry);
 495         return -error;
 496 }
 497
 498 STATIC int
 499 xfs_compat_fssetdm_by_handle(
 500         struct file             *parfilp,
 501         void                    __user *arg)
 502 {
 503         int                     error;
 504         struct fsdmidata        fsd;
 505         compat_xfs_fsop_setdm_handlereq_t dmhreq;
 506         struct dentry           *dentry;
 507
 508         if (!capable(CAP_MKNOD))
 509                 return -XFS_ERROR(EPERM);
 510         if (copy_from_user(&dmhreq, arg,
 511                            sizeof(compat_xfs_fsop_setdm_handlereq_t)))
 512                 return -XFS_ERROR(EFAULT);
 513
 514         dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
 515         if (IS_ERR(dentry))
 516                 return PTR_ERR(dentry);
 517
 518         if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
 519                 error = -XFS_ERROR(EPERM);
 520                 goto out;
 521         }
 522
 523         if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
 524                 error = -XFS_ERROR(EFAULT);
 525                 goto out;
 526         }
 527
 528         error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
 529                                  fsd.fsd_dmstate);
 530
 531 out:
 532         dput(dentry);
 533         return error;
 534 }
 535
 536 long
 537 xfs_file_compat_ioctl(
 538         struct file             *filp,
 539         unsigned                cmd,
 540         unsigned long           p)
 541 {
 542         struct inode            *inode = filp->f_path.dentry->d_inode;
 543         struct xfs_inode        *ip = XFS_I(inode);
 544         struct xfs_mount        *mp = ip->i_mount;
 545         void                    __user *arg = (void __user *)p;
 546         int                     ioflags = 0;
 547         int                     error;
 548
 549         if (filp->f_mode & FMODE_NOCMTIME)
 550                 ioflags |= IO_INVIS;
 551
 552         xfs_itrace_entry(ip);
 553
 554         switch (cmd) {
 555         /* No size or alignment issues on any arch */
 556         case XFS_IOC_DIOINFO:
 557         case XFS_IOC_FSGEOMETRY:
 558         case XFS_IOC_FSGETXATTR:
 559         case XFS_IOC_FSSETXATTR:
 560         case XFS_IOC_FSGETXATTRA:
 561         case XFS_IOC_FSSETDM:
 562         case XFS_IOC_GETBMAP:
 563         case XFS_IOC_GETBMAPA:
 564         case XFS_IOC_GETBMAPX:
 565         case XFS_IOC_FSCOUNTS:
 566         case XFS_IOC_SET_RESBLKS:
 567         case XFS_IOC_GET_RESBLKS:
 568         case XFS_IOC_FSGROWFSLOG:
 569         case XFS_IOC_GOINGDOWN:
 570         case XFS_IOC_ERROR_INJECTION:
 571         case XFS_IOC_ERROR_CLEARALL:
 572                 return xfs_file_ioctl(filp, cmd, p);
 573 #ifndef BROKEN_X86_ALIGNMENT
 574         /* These are handled fine if no alignment issues */
 575         case XFS_IOC_ALLOCSP:
 576         case XFS_IOC_FREESP:
 577         case XFS_IOC_RESVSP:
 578         case XFS_IOC_UNRESVSP:
 579         case XFS_IOC_ALLOCSP64:
 580         case XFS_IOC_FREESP64:
 581         case XFS_IOC_RESVSP64:
 582         case XFS_IOC_UNRESVSP64:
 583         case XFS_IOC_FSGEOMETRY_V1:
 584         case XFS_IOC_FSGROWFSDATA:
 585         case XFS_IOC_FSGROWFSRT:
 586                 return xfs_file_ioctl(filp, cmd, p);
 587 #else
 588         case XFS_IOC_ALLOCSP_32:
 589         case XFS_IOC_FREESP_32:
 590         case XFS_IOC_ALLOCSP64_32:
 591         case XFS_IOC_FREESP64_32:
 592         case XFS_IOC_RESVSP_32:
 593         case XFS_IOC_UNRESVSP_32:
 594         case XFS_IOC_RESVSP64_32:
 595         case XFS_IOC_UNRESVSP64_32: {
 596                 struct xfs_flock64      bf;
 597
 598                 if (xfs_compat_flock64_copyin(&bf, arg))
 599                         return -XFS_ERROR(EFAULT);
 600                 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
 601                 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
 602         }
 603         case XFS_IOC_FSGEOMETRY_V1_32:
 604                 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
 605         case XFS_IOC_FSGROWFSDATA_32: {
 606                 struct xfs_growfs_data  in;
 607
 608                 if (xfs_compat_growfs_data_copyin(&in, arg))
 609                         return -XFS_ERROR(EFAULT);
 610                 error = xfs_growfs_data(mp, &in);
 611                 return -error;
 612         }
 613         case XFS_IOC_FSGROWFSRT_32: {
 614                 struct xfs_growfs_rt    in;
 615
 616                 if (xfs_compat_growfs_rt_copyin(&in, arg))
 617                         return -XFS_ERROR(EFAULT);
 618                 error = xfs_growfs_rt(mp, &in);
 619                 return -error;
 620         }
 621 #endif
 622         /* long changes size, but xfs only copiese out 32 bits */
 623         case XFS_IOC_GETXFLAGS_32:
 624         case XFS_IOC_SETXFLAGS_32:
 625         case XFS_IOC_GETVERSION_32:
 626                 cmd = _NATIVE_IOC(cmd, long);
 627                 return xfs_file_ioctl(filp, cmd, p);
 628         case XFS_IOC_SWAPEXT_32: {
 629                 struct xfs_swapext        sxp;
 630                 struct compat_xfs_swapext __user *sxu = arg;
 631
 632                 /* Bulk copy in up to the sx_stat field, then copy bstat */
 633                 if (copy_from_user(&sxp, sxu,
 634                                    offsetof(struct xfs_swapext, sx_stat)) ||
 635                     xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
 636                         return -XFS_ERROR(EFAULT);
 637                 error = xfs_swapext(&sxp);
 638                 return -error;
 639         }
 640         case XFS_IOC_FSBULKSTAT_32:
 641         case XFS_IOC_FSBULKSTAT_SINGLE_32:
 642         case XFS_IOC_FSINUMBERS_32:
 643                 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
 644         case XFS_IOC_FD_TO_HANDLE_32:
 645         case XFS_IOC_PATH_TO_HANDLE_32:
 646         case XFS_IOC_PATH_TO_FSHANDLE_32: {
 647                 struct xfs_fsop_handlereq       hreq;
 648
 649                 if (xfs_compat_handlereq_copyin(&hreq, arg))
 650                         return -XFS_ERROR(EFAULT);
 651                 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
 652                 return xfs_find_handle(cmd, &hreq);
 653         }
 654         case XFS_IOC_OPEN_BY_HANDLE_32: {
 655                 struct xfs_fsop_handlereq       hreq;
 656
 657                 if (xfs_compat_handlereq_copyin(&hreq, arg))
 658                         return -XFS_ERROR(EFAULT);
 659                 return xfs_open_by_handle(filp, &hreq);
 660         }
 661         case XFS_IOC_READLINK_BY_HANDLE_32: {
 662                 struct xfs_fsop_handlereq       hreq;
 663
 664                 if (xfs_compat_handlereq_copyin(&hreq, arg))
 665                         return -XFS_ERROR(EFAULT);
 666                 return xfs_readlink_by_handle(filp, &hreq);
 667         }
 668         case XFS_IOC_ATTRLIST_BY_HANDLE_32:
 669                 return xfs_compat_attrlist_by_handle(filp, arg);
 670         case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
 671                 return xfs_compat_attrmulti_by_handle(filp, arg);
 672         case XFS_IOC_FSSETDM_BY_HANDLE_32:
 673                 return xfs_compat_fssetdm_by_handle(filp, arg);
 674         default:
 675                 return -XFS_ERROR(ENOIOCTLCMD);
 676         }
 677 }