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 <linux/uaccess.h> 23 #include <linux/fsmap.h> 24 #include "xfs.h" 25 #include "xfs_fs.h" 26 #include "xfs_format.h" 27 #include "xfs_log_format.h" 28 #include "xfs_trans_resv.h" 29 #include "xfs_mount.h" 30 #include "xfs_inode.h" 31 #include "xfs_itable.h" 32 #include "xfs_error.h" 33 #include "xfs_fsops.h" 34 #include "xfs_alloc.h" 35 #include "xfs_rtalloc.h" 36 #include "xfs_attr.h" 37 #include "xfs_ioctl.h" 38 #include "xfs_ioctl32.h" 39 #include "xfs_trace.h" 40 #include "xfs_sb.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->m_sb, &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 > XFS_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(d_inode(dentry)), 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 d_inode(dentry), 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 d_inode(dentry), 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 d_inode(dentry), 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(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) { 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(d_inode(dentry)), 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 error; 538 539 trace_xfs_file_compat_ioctl(ip); 540 541 switch (cmd) { 542 /* No size or alignment issues on any arch */ 543 case XFS_IOC_DIOINFO: 544 case XFS_IOC_FSGEOMETRY: 545 case XFS_IOC_FSGETXATTR: 546 case XFS_IOC_FSSETXATTR: 547 case XFS_IOC_FSGETXATTRA: 548 case XFS_IOC_FSSETDM: 549 case XFS_IOC_GETBMAP: 550 case XFS_IOC_GETBMAPA: 551 case XFS_IOC_GETBMAPX: 552 case XFS_IOC_FSCOUNTS: 553 case XFS_IOC_SET_RESBLKS: 554 case XFS_IOC_GET_RESBLKS: 555 case XFS_IOC_FSGROWFSLOG: 556 case XFS_IOC_GOINGDOWN: 557 case XFS_IOC_ERROR_INJECTION: 558 case XFS_IOC_ERROR_CLEARALL: 559 case FS_IOC_GETFSMAP: 560 case XFS_IOC_SCRUB_METADATA: 561 return xfs_file_ioctl(filp, cmd, p); 562 #ifndef BROKEN_X86_ALIGNMENT 563 /* These are handled fine if no alignment issues */ 564 case XFS_IOC_ALLOCSP: 565 case XFS_IOC_FREESP: 566 case XFS_IOC_RESVSP: 567 case XFS_IOC_UNRESVSP: 568 case XFS_IOC_ALLOCSP64: 569 case XFS_IOC_FREESP64: 570 case XFS_IOC_RESVSP64: 571 case XFS_IOC_UNRESVSP64: 572 case XFS_IOC_FSGEOMETRY_V1: 573 case XFS_IOC_FSGROWFSDATA: 574 case XFS_IOC_FSGROWFSRT: 575 case XFS_IOC_ZERO_RANGE: 576 return xfs_file_ioctl(filp, cmd, p); 577 #else 578 case XFS_IOC_ALLOCSP_32: 579 case XFS_IOC_FREESP_32: 580 case XFS_IOC_ALLOCSP64_32: 581 case XFS_IOC_FREESP64_32: 582 case XFS_IOC_RESVSP_32: 583 case XFS_IOC_UNRESVSP_32: 584 case XFS_IOC_RESVSP64_32: 585 case XFS_IOC_UNRESVSP64_32: 586 case XFS_IOC_ZERO_RANGE_32: { 587 struct xfs_flock64 bf; 588 589 if (xfs_compat_flock64_copyin(&bf, arg)) 590 return -EFAULT; 591 cmd = _NATIVE_IOC(cmd, struct xfs_flock64); 592 return xfs_ioc_space(filp, cmd, &bf); 593 } 594 case XFS_IOC_FSGEOMETRY_V1_32: 595 return xfs_compat_ioc_fsgeometry_v1(mp, arg); 596 case XFS_IOC_FSGROWFSDATA_32: { 597 struct xfs_growfs_data in; 598 599 if (xfs_compat_growfs_data_copyin(&in, arg)) 600 return -EFAULT; 601 error = mnt_want_write_file(filp); 602 if (error) 603 return error; 604 error = xfs_growfs_data(mp, &in); 605 mnt_drop_write_file(filp); 606 return error; 607 } 608 case XFS_IOC_FSGROWFSRT_32: { 609 struct xfs_growfs_rt in; 610 611 if (xfs_compat_growfs_rt_copyin(&in, arg)) 612 return -EFAULT; 613 error = mnt_want_write_file(filp); 614 if (error) 615 return error; 616 error = xfs_growfs_rt(mp, &in); 617 mnt_drop_write_file(filp); 618 return error; 619 } 620 #endif 621 /* long changes size, but xfs only copiese out 32 bits */ 622 case XFS_IOC_GETXFLAGS_32: 623 case XFS_IOC_SETXFLAGS_32: 624 case XFS_IOC_GETVERSION_32: 625 cmd = _NATIVE_IOC(cmd, long); 626 return xfs_file_ioctl(filp, cmd, p); 627 case XFS_IOC_SWAPEXT_32: { 628 struct xfs_swapext sxp; 629 struct compat_xfs_swapext __user *sxu = arg; 630 631 /* Bulk copy in up to the sx_stat field, then copy bstat */ 632 if (copy_from_user(&sxp, sxu, 633 offsetof(struct xfs_swapext, sx_stat)) || 634 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat)) 635 return -EFAULT; 636 error = mnt_want_write_file(filp); 637 if (error) 638 return error; 639 error = xfs_ioc_swapext(&sxp); 640 mnt_drop_write_file(filp); 641 return error; 642 } 643 case XFS_IOC_FSBULKSTAT_32: 644 case XFS_IOC_FSBULKSTAT_SINGLE_32: 645 case XFS_IOC_FSINUMBERS_32: 646 return xfs_compat_ioc_bulkstat(mp, cmd, arg); 647 case XFS_IOC_FD_TO_HANDLE_32: 648 case XFS_IOC_PATH_TO_HANDLE_32: 649 case XFS_IOC_PATH_TO_FSHANDLE_32: { 650 struct xfs_fsop_handlereq hreq; 651 652 if (xfs_compat_handlereq_copyin(&hreq, arg)) 653 return -EFAULT; 654 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq); 655 return xfs_find_handle(cmd, &hreq); 656 } 657 case XFS_IOC_OPEN_BY_HANDLE_32: { 658 struct xfs_fsop_handlereq hreq; 659 660 if (xfs_compat_handlereq_copyin(&hreq, arg)) 661 return -EFAULT; 662 return xfs_open_by_handle(filp, &hreq); 663 } 664 case XFS_IOC_READLINK_BY_HANDLE_32: { 665 struct xfs_fsop_handlereq hreq; 666 667 if (xfs_compat_handlereq_copyin(&hreq, arg)) 668 return -EFAULT; 669 return xfs_readlink_by_handle(filp, &hreq); 670 } 671 case XFS_IOC_ATTRLIST_BY_HANDLE_32: 672 return xfs_compat_attrlist_by_handle(filp, arg); 673 case XFS_IOC_ATTRMULTI_BY_HANDLE_32: 674 return xfs_compat_attrmulti_by_handle(filp, arg); 675 case XFS_IOC_FSSETDM_BY_HANDLE_32: 676 return xfs_compat_fssetdm_by_handle(filp, arg); 677 default: 678 return -ENOIOCTLCMD; 679 } 680 } 681