1 /* 2 * Copyright (c) 2004-2005 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 #include <linux/compat.h> 19 #include <linux/ioctl.h> 20 #include <linux/mount.h> 21 #include <linux/slab.h> 22 #include <asm/uaccess.h> 23 #include "xfs.h" 24 #include "xfs_fs.h" 25 #include "xfs_format.h" 26 #include "xfs_log_format.h" 27 #include "xfs_trans_resv.h" 28 #include "xfs_sb.h" 29 #include "xfs_ag.h" 30 #include "xfs_mount.h" 31 #include "xfs_vnode.h" 32 #include "xfs_inode.h" 33 #include "xfs_itable.h" 34 #include "xfs_error.h" 35 #include "xfs_fsops.h" 36 #include "xfs_alloc.h" 37 #include "xfs_rtalloc.h" 38 #include "xfs_attr.h" 39 #include "xfs_ioctl.h" 40 #include "xfs_ioctl32.h" 41 #include "xfs_trace.h" 42 43 #define _NATIVE_IOC(cmd, type) \ 44 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type)) 45 46 #ifdef BROKEN_X86_ALIGNMENT 47 STATIC int 48 xfs_compat_flock64_copyin( 49 xfs_flock64_t *bf, 50 compat_xfs_flock64_t __user *arg32) 51 { 52 if (get_user(bf->l_type, &arg32->l_type) || 53 get_user(bf->l_whence, &arg32->l_whence) || 54 get_user(bf->l_start, &arg32->l_start) || 55 get_user(bf->l_len, &arg32->l_len) || 56 get_user(bf->l_sysid, &arg32->l_sysid) || 57 get_user(bf->l_pid, &arg32->l_pid) || 58 copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32))) 59 return -XFS_ERROR(EFAULT); 60 return 0; 61 } 62 63 STATIC int 64 xfs_compat_ioc_fsgeometry_v1( 65 struct xfs_mount *mp, 66 compat_xfs_fsop_geom_v1_t __user *arg32) 67 { 68 xfs_fsop_geom_t fsgeo; 69 int error; 70 71 error = xfs_fs_geometry(mp, &fsgeo, 3); 72 if (error) 73 return -error; 74 /* The 32-bit variant simply has some padding at the end */ 75 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1))) 76 return -XFS_ERROR(EFAULT); 77 return 0; 78 } 79 80 STATIC int 81 xfs_compat_growfs_data_copyin( 82 struct xfs_growfs_data *in, 83 compat_xfs_growfs_data_t __user *arg32) 84 { 85 if (get_user(in->newblocks, &arg32->newblocks) || 86 get_user(in->imaxpct, &arg32->imaxpct)) 87 return -XFS_ERROR(EFAULT); 88 return 0; 89 } 90 91 STATIC int 92 xfs_compat_growfs_rt_copyin( 93 struct xfs_growfs_rt *in, 94 compat_xfs_growfs_rt_t __user *arg32) 95 { 96 if (get_user(in->newblocks, &arg32->newblocks) || 97 get_user(in->extsize, &arg32->extsize)) 98 return -XFS_ERROR(EFAULT); 99 return 0; 100 } 101 102 STATIC int 103 xfs_inumbers_fmt_compat( 104 void __user *ubuffer, 105 const xfs_inogrp_t *buffer, 106 long count, 107 long *written) 108 { 109 compat_xfs_inogrp_t __user *p32 = ubuffer; 110 long i; 111 112 for (i = 0; i < count; i++) { 113 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) || 114 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) || 115 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask)) 116 return -XFS_ERROR(EFAULT); 117 } 118 *written = count * sizeof(*p32); 119 return 0; 120 } 121 122 #else 123 #define xfs_inumbers_fmt_compat xfs_inumbers_fmt 124 #endif /* BROKEN_X86_ALIGNMENT */ 125 126 STATIC int 127 xfs_ioctl32_bstime_copyin( 128 xfs_bstime_t *bstime, 129 compat_xfs_bstime_t __user *bstime32) 130 { 131 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */ 132 133 if (get_user(sec32, &bstime32->tv_sec) || 134 get_user(bstime->tv_nsec, &bstime32->tv_nsec)) 135 return -XFS_ERROR(EFAULT); 136 bstime->tv_sec = sec32; 137 return 0; 138 } 139 140 /* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */ 141 STATIC int 142 xfs_ioctl32_bstat_copyin( 143 xfs_bstat_t *bstat, 144 compat_xfs_bstat_t __user *bstat32) 145 { 146 if (get_user(bstat->bs_ino, &bstat32->bs_ino) || 147 get_user(bstat->bs_mode, &bstat32->bs_mode) || 148 get_user(bstat->bs_nlink, &bstat32->bs_nlink) || 149 get_user(bstat->bs_uid, &bstat32->bs_uid) || 150 get_user(bstat->bs_gid, &bstat32->bs_gid) || 151 get_user(bstat->bs_rdev, &bstat32->bs_rdev) || 152 get_user(bstat->bs_blksize, &bstat32->bs_blksize) || 153 get_user(bstat->bs_size, &bstat32->bs_size) || 154 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) || 155 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) || 156 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) || 157 get_user(bstat->bs_blocks, &bstat32->bs_size) || 158 get_user(bstat->bs_xflags, &bstat32->bs_size) || 159 get_user(bstat->bs_extsize, &bstat32->bs_extsize) || 160 get_user(bstat->bs_extents, &bstat32->bs_extents) || 161 get_user(bstat->bs_gen, &bstat32->bs_gen) || 162 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) || 163 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) || 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 -XFS_ERROR(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 -XFS_ERROR(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 XFS_ERROR(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_dmevmask, &p32->bs_dmevmask) || 219 put_user(buffer->bs_dmstate, &p32->bs_dmstate) || 220 put_user(buffer->bs_aextents, &p32->bs_aextents)) 221 return XFS_ERROR(EFAULT); 222 if (ubused) 223 *ubused = sizeof(*p32); 224 return 0; 225 } 226 227 STATIC int 228 xfs_bulkstat_one_compat( 229 xfs_mount_t *mp, /* mount point for filesystem */ 230 xfs_ino_t ino, /* inode number to get data for */ 231 void __user *buffer, /* buffer to place output in */ 232 int ubsize, /* size of buffer */ 233 int *ubused, /* bytes used by me */ 234 int *stat) /* BULKSTAT_RV_... */ 235 { 236 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize, 237 xfs_bulkstat_one_fmt_compat, 238 ubused, stat); 239 } 240 241 /* copied from xfs_ioctl.c */ 242 STATIC int 243 xfs_compat_ioc_bulkstat( 244 xfs_mount_t *mp, 245 unsigned int cmd, 246 compat_xfs_fsop_bulkreq_t __user *p32) 247 { 248 u32 addr; 249 xfs_fsop_bulkreq_t bulkreq; 250 int count; /* # of records returned */ 251 xfs_ino_t inlast; /* last inode number */ 252 int done; 253 int error; 254 255 /* done = 1 if there are more stats to get and if bulkstat */ 256 /* should be called again (unused here, but used in dmapi) */ 257 258 if (!capable(CAP_SYS_ADMIN)) 259 return -XFS_ERROR(EPERM); 260 261 if (XFS_FORCED_SHUTDOWN(mp)) 262 return -XFS_ERROR(EIO); 263 264 if (get_user(addr, &p32->lastip)) 265 return -XFS_ERROR(EFAULT); 266 bulkreq.lastip = compat_ptr(addr); 267 if (get_user(bulkreq.icount, &p32->icount) || 268 get_user(addr, &p32->ubuffer)) 269 return -XFS_ERROR(EFAULT); 270 bulkreq.ubuffer = compat_ptr(addr); 271 if (get_user(addr, &p32->ocount)) 272 return -XFS_ERROR(EFAULT); 273 bulkreq.ocount = compat_ptr(addr); 274 275 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) 276 return -XFS_ERROR(EFAULT); 277 278 if ((count = bulkreq.icount) <= 0) 279 return -XFS_ERROR(EINVAL); 280 281 if (bulkreq.ubuffer == NULL) 282 return -XFS_ERROR(EINVAL); 283 284 if (cmd == XFS_IOC_FSINUMBERS_32) { 285 error = xfs_inumbers(mp, &inlast, &count, 286 bulkreq.ubuffer, xfs_inumbers_fmt_compat); 287 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) { 288 int res; 289 290 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer, 291 sizeof(compat_xfs_bstat_t), NULL, &res); 292 } else if (cmd == XFS_IOC_FSBULKSTAT_32) { 293 error = xfs_bulkstat(mp, &inlast, &count, 294 xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t), 295 bulkreq.ubuffer, &done); 296 } else 297 error = XFS_ERROR(EINVAL); 298 if (error) 299 return -error; 300 301 if (bulkreq.ocount != NULL) { 302 if (copy_to_user(bulkreq.lastip, &inlast, 303 sizeof(xfs_ino_t))) 304 return -XFS_ERROR(EFAULT); 305 306 if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) 307 return -XFS_ERROR(EFAULT); 308 } 309 310 return 0; 311 } 312 313 STATIC int 314 xfs_compat_handlereq_copyin( 315 xfs_fsop_handlereq_t *hreq, 316 compat_xfs_fsop_handlereq_t __user *arg32) 317 { 318 compat_xfs_fsop_handlereq_t hreq32; 319 320 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t))) 321 return -XFS_ERROR(EFAULT); 322 323 hreq->fd = hreq32.fd; 324 hreq->path = compat_ptr(hreq32.path); 325 hreq->oflags = hreq32.oflags; 326 hreq->ihandle = compat_ptr(hreq32.ihandle); 327 hreq->ihandlen = hreq32.ihandlen; 328 hreq->ohandle = compat_ptr(hreq32.ohandle); 329 hreq->ohandlen = compat_ptr(hreq32.ohandlen); 330 331 return 0; 332 } 333 334 STATIC struct dentry * 335 xfs_compat_handlereq_to_dentry( 336 struct file *parfilp, 337 compat_xfs_fsop_handlereq_t *hreq) 338 { 339 return xfs_handle_to_dentry(parfilp, 340 compat_ptr(hreq->ihandle), hreq->ihandlen); 341 } 342 343 STATIC int 344 xfs_compat_attrlist_by_handle( 345 struct file *parfilp, 346 void __user *arg) 347 { 348 int error; 349 attrlist_cursor_kern_t *cursor; 350 compat_xfs_fsop_attrlist_handlereq_t al_hreq; 351 struct dentry *dentry; 352 char *kbuf; 353 354 if (!capable(CAP_SYS_ADMIN)) 355 return -XFS_ERROR(EPERM); 356 if (copy_from_user(&al_hreq, arg, 357 sizeof(compat_xfs_fsop_attrlist_handlereq_t))) 358 return -XFS_ERROR(EFAULT); 359 if (al_hreq.buflen < sizeof(struct attrlist) || 360 al_hreq.buflen > XATTR_LIST_MAX) 361 return -XFS_ERROR(EINVAL); 362 363 /* 364 * Reject flags, only allow namespaces. 365 */ 366 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) 367 return -XFS_ERROR(EINVAL); 368 369 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq); 370 if (IS_ERR(dentry)) 371 return PTR_ERR(dentry); 372 373 error = -ENOMEM; 374 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP); 375 if (!kbuf) 376 goto out_dput; 377 378 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; 379 error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, 380 al_hreq.flags, cursor); 381 if (error) 382 goto out_kfree; 383 384 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen)) 385 error = -EFAULT; 386 387 out_kfree: 388 kmem_free(kbuf); 389 out_dput: 390 dput(dentry); 391 return error; 392 } 393 394 STATIC int 395 xfs_compat_attrmulti_by_handle( 396 struct file *parfilp, 397 void __user *arg) 398 { 399 int error; 400 compat_xfs_attr_multiop_t *ops; 401 compat_xfs_fsop_attrmulti_handlereq_t am_hreq; 402 struct dentry *dentry; 403 unsigned int i, size; 404 unsigned char *attr_name; 405 406 if (!capable(CAP_SYS_ADMIN)) 407 return -XFS_ERROR(EPERM); 408 if (copy_from_user(&am_hreq, arg, 409 sizeof(compat_xfs_fsop_attrmulti_handlereq_t))) 410 return -XFS_ERROR(EFAULT); 411 412 /* overflow check */ 413 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t)) 414 return -E2BIG; 415 416 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq); 417 if (IS_ERR(dentry)) 418 return PTR_ERR(dentry); 419 420 error = E2BIG; 421 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t); 422 if (!size || size > 16 * PAGE_SIZE) 423 goto out_dput; 424 425 ops = memdup_user(compat_ptr(am_hreq.ops), size); 426 if (IS_ERR(ops)) { 427 error = PTR_ERR(ops); 428 goto out_dput; 429 } 430 431 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); 432 if (!attr_name) 433 goto out_kfree_ops; 434 435 error = 0; 436 for (i = 0; i < am_hreq.opcount; i++) { 437 ops[i].am_error = strncpy_from_user((char *)attr_name, 438 compat_ptr(ops[i].am_attrname), 439 MAXNAMELEN); 440 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) 441 error = -ERANGE; 442 if (ops[i].am_error < 0) 443 break; 444 445 switch (ops[i].am_opcode) { 446 case ATTR_OP_GET: 447 ops[i].am_error = xfs_attrmulti_attr_get( 448 dentry->d_inode, attr_name, 449 compat_ptr(ops[i].am_attrvalue), 450 &ops[i].am_length, ops[i].am_flags); 451 break; 452 case ATTR_OP_SET: 453 ops[i].am_error = mnt_want_write_file(parfilp); 454 if (ops[i].am_error) 455 break; 456 ops[i].am_error = xfs_attrmulti_attr_set( 457 dentry->d_inode, attr_name, 458 compat_ptr(ops[i].am_attrvalue), 459 ops[i].am_length, ops[i].am_flags); 460 mnt_drop_write_file(parfilp); 461 break; 462 case ATTR_OP_REMOVE: 463 ops[i].am_error = mnt_want_write_file(parfilp); 464 if (ops[i].am_error) 465 break; 466 ops[i].am_error = xfs_attrmulti_attr_remove( 467 dentry->d_inode, attr_name, 468 ops[i].am_flags); 469 mnt_drop_write_file(parfilp); 470 break; 471 default: 472 ops[i].am_error = EINVAL; 473 } 474 } 475 476 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size)) 477 error = XFS_ERROR(EFAULT); 478 479 kfree(attr_name); 480 out_kfree_ops: 481 kfree(ops); 482 out_dput: 483 dput(dentry); 484 return -error; 485 } 486 487 STATIC int 488 xfs_compat_fssetdm_by_handle( 489 struct file *parfilp, 490 void __user *arg) 491 { 492 int error; 493 struct fsdmidata fsd; 494 compat_xfs_fsop_setdm_handlereq_t dmhreq; 495 struct dentry *dentry; 496 497 if (!capable(CAP_MKNOD)) 498 return -XFS_ERROR(EPERM); 499 if (copy_from_user(&dmhreq, arg, 500 sizeof(compat_xfs_fsop_setdm_handlereq_t))) 501 return -XFS_ERROR(EFAULT); 502 503 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq); 504 if (IS_ERR(dentry)) 505 return PTR_ERR(dentry); 506 507 if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { 508 error = -XFS_ERROR(EPERM); 509 goto out; 510 } 511 512 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) { 513 error = -XFS_ERROR(EFAULT); 514 goto out; 515 } 516 517 error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, 518 fsd.fsd_dmstate); 519 520 out: 521 dput(dentry); 522 return error; 523 } 524 525 long 526 xfs_file_compat_ioctl( 527 struct file *filp, 528 unsigned cmd, 529 unsigned long p) 530 { 531 struct inode *inode = file_inode(filp); 532 struct xfs_inode *ip = XFS_I(inode); 533 struct xfs_mount *mp = ip->i_mount; 534 void __user *arg = (void __user *)p; 535 int ioflags = 0; 536 int error; 537 538 if (filp->f_mode & FMODE_NOCMTIME) 539 ioflags |= IO_INVIS; 540 541 trace_xfs_file_compat_ioctl(ip); 542 543 switch (cmd) { 544 /* No size or alignment issues on any arch */ 545 case XFS_IOC_DIOINFO: 546 case XFS_IOC_FSGEOMETRY: 547 case XFS_IOC_FSGETXATTR: 548 case XFS_IOC_FSSETXATTR: 549 case XFS_IOC_FSGETXATTRA: 550 case XFS_IOC_FSSETDM: 551 case XFS_IOC_GETBMAP: 552 case XFS_IOC_GETBMAPA: 553 case XFS_IOC_GETBMAPX: 554 case XFS_IOC_FSCOUNTS: 555 case XFS_IOC_SET_RESBLKS: 556 case XFS_IOC_GET_RESBLKS: 557 case XFS_IOC_FSGROWFSLOG: 558 case XFS_IOC_GOINGDOWN: 559 case XFS_IOC_ERROR_INJECTION: 560 case XFS_IOC_ERROR_CLEARALL: 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 -XFS_ERROR(EFAULT); 591 cmd = _NATIVE_IOC(cmd, struct xfs_flock64); 592 return xfs_ioc_space(ip, inode, filp, ioflags, 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 -XFS_ERROR(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 -XFS_ERROR(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 -XFS_ERROR(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 -XFS_ERROR(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 -XFS_ERROR(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 -XFS_ERROR(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 -XFS_ERROR(ENOIOCTLCMD); 679 } 680 } 681