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