linux/fs/xfs/xfs_ioctl32.c
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   1/*
   2 * Copyright (c) 2004-2005 Silicon Graphics, Inc.
   3 * All Rights Reserved.
   4 *
   5 * This program is free software; you can redistribute it and/or
   6 * modify it under the terms of the GNU General Public License as
   7 * published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope that it would be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write the Free Software Foundation,
  16 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17 */
  18#include <linux/compat.h>
  19#include <linux/ioctl.h>
  20#include <linux/mount.h>
  21#include <linux/slab.h>
  22#include <asm/uaccess.h>
  23#include "xfs.h"
  24#include "xfs_fs.h"
  25#include "xfs_log.h"
  26#include "xfs_trans.h"
  27#include "xfs_sb.h"
  28#include "xfs_ag.h"
  29#include "xfs_mount.h"
  30#include "xfs_bmap_btree.h"
  31#include "xfs_vnode.h"
  32#include "xfs_dinode.h"
  33#include "xfs_inode.h"
  34#include "xfs_itable.h"
  35#include "xfs_error.h"
  36#include "xfs_dfrag.h"
  37#include "xfs_vnodeops.h"
  38#include "xfs_fsops.h"
  39#include "xfs_alloc.h"
  40#include "xfs_rtalloc.h"
  41#include "xfs_attr.h"
  42#include "xfs_ioctl.h"
  43#include "xfs_ioctl32.h"
  44#include "xfs_trace.h"
  45
  46#define  _NATIVE_IOC(cmd, type) \
  47          _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
  48
  49#ifdef BROKEN_X86_ALIGNMENT
  50STATIC int
  51xfs_compat_flock64_copyin(
  52        xfs_flock64_t           *bf,
  53        compat_xfs_flock64_t    __user *arg32)
  54{
  55        if (get_user(bf->l_type,        &arg32->l_type) ||
  56            get_user(bf->l_whence,      &arg32->l_whence) ||
  57            get_user(bf->l_start,       &arg32->l_start) ||
  58            get_user(bf->l_len,         &arg32->l_len) ||
  59            get_user(bf->l_sysid,       &arg32->l_sysid) ||
  60            get_user(bf->l_pid,         &arg32->l_pid) ||
  61            copy_from_user(bf->l_pad,   &arg32->l_pad,  4*sizeof(u32)))
  62                return -XFS_ERROR(EFAULT);
  63        return 0;
  64}
  65
  66STATIC int
  67xfs_compat_ioc_fsgeometry_v1(
  68        struct xfs_mount          *mp,
  69        compat_xfs_fsop_geom_v1_t __user *arg32)
  70{
  71        xfs_fsop_geom_t           fsgeo;
  72        int                       error;
  73
  74        error = xfs_fs_geometry(mp, &fsgeo, 3);
  75        if (error)
  76                return -error;
  77        /* The 32-bit variant simply has some padding at the end */
  78        if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
  79                return -XFS_ERROR(EFAULT);
  80        return 0;
  81}
  82
  83STATIC int
  84xfs_compat_growfs_data_copyin(
  85        struct xfs_growfs_data   *in,
  86        compat_xfs_growfs_data_t __user *arg32)
  87{
  88        if (get_user(in->newblocks, &arg32->newblocks) ||
  89            get_user(in->imaxpct,   &arg32->imaxpct))
  90                return -XFS_ERROR(EFAULT);
  91        return 0;
  92}
  93
  94STATIC int
  95xfs_compat_growfs_rt_copyin(
  96        struct xfs_growfs_rt     *in,
  97        compat_xfs_growfs_rt_t  __user *arg32)
  98{
  99        if (get_user(in->newblocks, &arg32->newblocks) ||
 100            get_user(in->extsize,   &arg32->extsize))
 101                return -XFS_ERROR(EFAULT);
 102        return 0;
 103}
 104
 105STATIC int
 106xfs_inumbers_fmt_compat(
 107        void                    __user *ubuffer,
 108        const xfs_inogrp_t      *buffer,
 109        long                    count,
 110        long                    *written)
 111{
 112        compat_xfs_inogrp_t     __user *p32 = ubuffer;
 113        long                    i;
 114
 115        for (i = 0; i < count; i++) {
 116                if (put_user(buffer[i].xi_startino,   &p32[i].xi_startino) ||
 117                    put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
 118                    put_user(buffer[i].xi_allocmask,  &p32[i].xi_allocmask))
 119                        return -XFS_ERROR(EFAULT);
 120        }
 121        *written = count * sizeof(*p32);
 122        return 0;
 123}
 124
 125#else
 126#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
 127#endif  /* BROKEN_X86_ALIGNMENT */
 128
 129STATIC int
 130xfs_ioctl32_bstime_copyin(
 131        xfs_bstime_t            *bstime,
 132        compat_xfs_bstime_t     __user *bstime32)
 133{
 134        compat_time_t           sec32;  /* tv_sec differs on 64 vs. 32 */
 135
 136        if (get_user(sec32,             &bstime32->tv_sec)      ||
 137            get_user(bstime->tv_nsec,   &bstime32->tv_nsec))
 138                return -XFS_ERROR(EFAULT);
 139        bstime->tv_sec = sec32;
 140        return 0;
 141}
 142
 143/* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
 144STATIC int
 145xfs_ioctl32_bstat_copyin(
 146        xfs_bstat_t             *bstat,
 147        compat_xfs_bstat_t      __user *bstat32)
 148{
 149        if (get_user(bstat->bs_ino,     &bstat32->bs_ino)       ||
 150            get_user(bstat->bs_mode,    &bstat32->bs_mode)      ||
 151            get_user(bstat->bs_nlink,   &bstat32->bs_nlink)     ||
 152            get_user(bstat->bs_uid,     &bstat32->bs_uid)       ||
 153            get_user(bstat->bs_gid,     &bstat32->bs_gid)       ||
 154            get_user(bstat->bs_rdev,    &bstat32->bs_rdev)      ||
 155            get_user(bstat->bs_blksize, &bstat32->bs_blksize)   ||
 156            get_user(bstat->bs_size,    &bstat32->bs_size)      ||
 157            xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
 158            xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
 159            xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
 160            get_user(bstat->bs_blocks,  &bstat32->bs_size)      ||
 161            get_user(bstat->bs_xflags,  &bstat32->bs_size)      ||
 162            get_user(bstat->bs_extsize, &bstat32->bs_extsize)   ||
 163            get_user(bstat->bs_extents, &bstat32->bs_extents)   ||
 164            get_user(bstat->bs_gen,     &bstat32->bs_gen)       ||
 165            get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
 166            get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
 167            get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
 168            get_user(bstat->bs_dmstate, &bstat32->bs_dmstate)   ||
 169            get_user(bstat->bs_aextents, &bstat32->bs_aextents))
 170                return -XFS_ERROR(EFAULT);
 171        return 0;
 172}
 173
 174/* XFS_IOC_FSBULKSTAT and friends */
 175
 176STATIC int
 177xfs_bstime_store_compat(
 178        compat_xfs_bstime_t     __user *p32,
 179        const xfs_bstime_t      *p)
 180{
 181        __s32                   sec32;
 182
 183        sec32 = p->tv_sec;
 184        if (put_user(sec32, &p32->tv_sec) ||
 185            put_user(p->tv_nsec, &p32->tv_nsec))
 186                return -XFS_ERROR(EFAULT);
 187        return 0;
 188}
 189
 190/* Return 0 on success or positive error (to xfs_bulkstat()) */
 191STATIC int
 192xfs_bulkstat_one_fmt_compat(
 193        void                    __user *ubuffer,
 194        int                     ubsize,
 195        int                     *ubused,
 196        const xfs_bstat_t       *buffer)
 197{
 198        compat_xfs_bstat_t      __user *p32 = ubuffer;
 199
 200        if (ubsize < sizeof(*p32))
 201                return XFS_ERROR(ENOMEM);
 202
 203        if (put_user(buffer->bs_ino,      &p32->bs_ino)         ||
 204            put_user(buffer->bs_mode,     &p32->bs_mode)        ||
 205            put_user(buffer->bs_nlink,    &p32->bs_nlink)       ||
 206            put_user(buffer->bs_uid,      &p32->bs_uid)         ||
 207            put_user(buffer->bs_gid,      &p32->bs_gid)         ||
 208            put_user(buffer->bs_rdev,     &p32->bs_rdev)        ||
 209            put_user(buffer->bs_blksize,  &p32->bs_blksize)     ||
 210            put_user(buffer->bs_size,     &p32->bs_size)        ||
 211            xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
 212            xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
 213            xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
 214            put_user(buffer->bs_blocks,   &p32->bs_blocks)      ||
 215            put_user(buffer->bs_xflags,   &p32->bs_xflags)      ||
 216            put_user(buffer->bs_extsize,  &p32->bs_extsize)     ||
 217            put_user(buffer->bs_extents,  &p32->bs_extents)     ||
 218            put_user(buffer->bs_gen,      &p32->bs_gen)         ||
 219            put_user(buffer->bs_projid,   &p32->bs_projid)      ||
 220            put_user(buffer->bs_projid_hi,      &p32->bs_projid_hi)     ||
 221            put_user(buffer->bs_dmevmask, &p32->bs_dmevmask)    ||
 222            put_user(buffer->bs_dmstate,  &p32->bs_dmstate)     ||
 223            put_user(buffer->bs_aextents, &p32->bs_aextents))
 224                return XFS_ERROR(EFAULT);
 225        if (ubused)
 226                *ubused = sizeof(*p32);
 227        return 0;
 228}
 229
 230STATIC int
 231xfs_bulkstat_one_compat(
 232        xfs_mount_t     *mp,            /* mount point for filesystem */
 233        xfs_ino_t       ino,            /* inode number to get data for */
 234        void            __user *buffer, /* buffer to place output in */
 235        int             ubsize,         /* size of buffer */
 236        int             *ubused,        /* bytes used by me */
 237        int             *stat)          /* BULKSTAT_RV_... */
 238{
 239        return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
 240                                    xfs_bulkstat_one_fmt_compat,
 241                                    ubused, stat);
 242}
 243
 244/* copied from xfs_ioctl.c */
 245STATIC int
 246xfs_compat_ioc_bulkstat(
 247        xfs_mount_t               *mp,
 248        unsigned int              cmd,
 249        compat_xfs_fsop_bulkreq_t __user *p32)
 250{
 251        u32                     addr;
 252        xfs_fsop_bulkreq_t      bulkreq;
 253        int                     count;  /* # of records returned */
 254        xfs_ino_t               inlast; /* last inode number */
 255        int                     done;
 256        int                     error;
 257
 258        /* done = 1 if there are more stats to get and if bulkstat */
 259        /* should be called again (unused here, but used in dmapi) */
 260
 261        if (!capable(CAP_SYS_ADMIN))
 262                return -XFS_ERROR(EPERM);
 263
 264        if (XFS_FORCED_SHUTDOWN(mp))
 265                return -XFS_ERROR(EIO);
 266
 267        if (get_user(addr, &p32->lastip))
 268                return -XFS_ERROR(EFAULT);
 269        bulkreq.lastip = compat_ptr(addr);
 270        if (get_user(bulkreq.icount, &p32->icount) ||
 271            get_user(addr, &p32->ubuffer))
 272                return -XFS_ERROR(EFAULT);
 273        bulkreq.ubuffer = compat_ptr(addr);
 274        if (get_user(addr, &p32->ocount))
 275                return -XFS_ERROR(EFAULT);
 276        bulkreq.ocount = compat_ptr(addr);
 277
 278        if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
 279                return -XFS_ERROR(EFAULT);
 280
 281        if ((count = bulkreq.icount) <= 0)
 282                return -XFS_ERROR(EINVAL);
 283
 284        if (bulkreq.ubuffer == NULL)
 285                return -XFS_ERROR(EINVAL);
 286
 287        if (cmd == XFS_IOC_FSINUMBERS_32) {
 288                error = xfs_inumbers(mp, &inlast, &count,
 289                                bulkreq.ubuffer, xfs_inumbers_fmt_compat);
 290        } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
 291                int res;
 292
 293                error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
 294                                sizeof(compat_xfs_bstat_t), NULL, &res);
 295        } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
 296                error = xfs_bulkstat(mp, &inlast, &count,
 297                        xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
 298                        bulkreq.ubuffer, &done);
 299        } else
 300                error = XFS_ERROR(EINVAL);
 301        if (error)
 302                return -error;
 303
 304        if (bulkreq.ocount != NULL) {
 305                if (copy_to_user(bulkreq.lastip, &inlast,
 306                                                sizeof(xfs_ino_t)))
 307                        return -XFS_ERROR(EFAULT);
 308
 309                if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
 310                        return -XFS_ERROR(EFAULT);
 311        }
 312
 313        return 0;
 314}
 315
 316STATIC int
 317xfs_compat_handlereq_copyin(
 318        xfs_fsop_handlereq_t            *hreq,
 319        compat_xfs_fsop_handlereq_t     __user *arg32)
 320{
 321        compat_xfs_fsop_handlereq_t     hreq32;
 322
 323        if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
 324                return -XFS_ERROR(EFAULT);
 325
 326        hreq->fd = hreq32.fd;
 327        hreq->path = compat_ptr(hreq32.path);
 328        hreq->oflags = hreq32.oflags;
 329        hreq->ihandle = compat_ptr(hreq32.ihandle);
 330        hreq->ihandlen = hreq32.ihandlen;
 331        hreq->ohandle = compat_ptr(hreq32.ohandle);
 332        hreq->ohandlen = compat_ptr(hreq32.ohandlen);
 333
 334        return 0;
 335}
 336
 337STATIC struct dentry *
 338xfs_compat_handlereq_to_dentry(
 339        struct file             *parfilp,
 340        compat_xfs_fsop_handlereq_t *hreq)
 341{
 342        return xfs_handle_to_dentry(parfilp,
 343                        compat_ptr(hreq->ihandle), hreq->ihandlen);
 344}
 345
 346STATIC int
 347xfs_compat_attrlist_by_handle(
 348        struct file             *parfilp,
 349        void                    __user *arg)
 350{
 351        int                     error;
 352        attrlist_cursor_kern_t  *cursor;
 353        compat_xfs_fsop_attrlist_handlereq_t al_hreq;
 354        struct dentry           *dentry;
 355        char                    *kbuf;
 356
 357        if (!capable(CAP_SYS_ADMIN))
 358                return -XFS_ERROR(EPERM);
 359        if (copy_from_user(&al_hreq, arg,
 360                           sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
 361                return -XFS_ERROR(EFAULT);
 362        if (al_hreq.buflen > XATTR_LIST_MAX)
 363                return -XFS_ERROR(EINVAL);
 364
 365        /*
 366         * Reject flags, only allow namespaces.
 367         */
 368        if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
 369                return -XFS_ERROR(EINVAL);
 370
 371        dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
 372        if (IS_ERR(dentry))
 373                return PTR_ERR(dentry);
 374
 375        error = -ENOMEM;
 376        kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
 377        if (!kbuf)
 378                goto out_dput;
 379
 380        cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
 381        error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
 382                                        al_hreq.flags, cursor);
 383        if (error)
 384                goto out_kfree;
 385
 386        if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
 387                error = -EFAULT;
 388
 389 out_kfree:
 390        kfree(kbuf);
 391 out_dput:
 392        dput(dentry);
 393        return error;
 394}
 395
 396STATIC int
 397xfs_compat_attrmulti_by_handle(
 398        struct file                             *parfilp,
 399        void                                    __user *arg)
 400{
 401        int                                     error;
 402        compat_xfs_attr_multiop_t               *ops;
 403        compat_xfs_fsop_attrmulti_handlereq_t   am_hreq;
 404        struct dentry                           *dentry;
 405        unsigned int                            i, size;
 406        unsigned char                           *attr_name;
 407
 408        if (!capable(CAP_SYS_ADMIN))
 409                return -XFS_ERROR(EPERM);
 410        if (copy_from_user(&am_hreq, arg,
 411                           sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
 412                return -XFS_ERROR(EFAULT);
 413
 414        /* overflow check */
 415        if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
 416                return -E2BIG;
 417
 418        dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
 419        if (IS_ERR(dentry))
 420                return PTR_ERR(dentry);
 421
 422        error = E2BIG;
 423        size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
 424        if (!size || size > 16 * PAGE_SIZE)
 425                goto out_dput;
 426
 427        ops = memdup_user(compat_ptr(am_hreq.ops), size);
 428        if (IS_ERR(ops)) {
 429                error = PTR_ERR(ops);
 430                goto out_dput;
 431        }
 432
 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 = XFS_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
 489STATIC int
 490xfs_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 -XFS_ERROR(EPERM);
 501        if (copy_from_user(&dmhreq, arg,
 502                           sizeof(compat_xfs_fsop_setdm_handlereq_t)))
 503                return -XFS_ERROR(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 = -XFS_ERROR(EPERM);
 511                goto out;
 512        }
 513
 514        if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
 515                error = -XFS_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
 522out:
 523        dput(dentry);
 524        return error;
 525}
 526
 527long
 528xfs_file_compat_ioctl(
 529        struct file             *filp,
 530        unsigned                cmd,
 531        unsigned long           p)
 532{
 533        struct inode            *inode = filp->f_path.dentry->d_inode;
 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 |= 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 -XFS_ERROR(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 -XFS_ERROR(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 -XFS_ERROR(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 -XFS_ERROR(EFAULT);
 638                error = mnt_want_write_file(filp);
 639                if (error)
 640                        return error;
 641                error = xfs_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 -XFS_ERROR(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 -XFS_ERROR(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 -XFS_ERROR(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 -XFS_ERROR(ENOIOCTLCMD);
 681        }
 682}
 683
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