1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2004-2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #include <linux/compat.h> 7 #include <linux/ioctl.h> 8 #include <linux/mount.h> 9 #include <linux/slab.h> 10 #include <linux/uaccess.h> 11 #include <linux/fsmap.h> 12 #include "xfs.h" 13 #include "xfs_fs.h" 14 #include "xfs_format.h" 15 #include "xfs_log_format.h" 16 #include "xfs_trans_resv.h" 17 #include "xfs_mount.h" 18 #include "xfs_inode.h" 19 #include "xfs_itable.h" 20 #include "xfs_error.h" 21 #include "xfs_fsops.h" 22 #include "xfs_alloc.h" 23 #include "xfs_rtalloc.h" 24 #include "xfs_attr.h" 25 #include "xfs_ioctl.h" 26 #include "xfs_ioctl32.h" 27 #include "xfs_trace.h" 28 #include "xfs_sb.h" 29 30 #define _NATIVE_IOC(cmd, type) \ 31 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type)) 32 33 #ifdef BROKEN_X86_ALIGNMENT 34 STATIC int 35 xfs_compat_flock64_copyin( 36 xfs_flock64_t *bf, 37 compat_xfs_flock64_t __user *arg32) 38 { 39 if (get_user(bf->l_type, &arg32->l_type) || 40 get_user(bf->l_whence, &arg32->l_whence) || 41 get_user(bf->l_start, &arg32->l_start) || 42 get_user(bf->l_len, &arg32->l_len) || 43 get_user(bf->l_sysid, &arg32->l_sysid) || 44 get_user(bf->l_pid, &arg32->l_pid) || 45 copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32))) 46 return -EFAULT; 47 return 0; 48 } 49 50 STATIC int 51 xfs_compat_ioc_fsgeometry_v1( 52 struct xfs_mount *mp, 53 compat_xfs_fsop_geom_v1_t __user *arg32) 54 { 55 xfs_fsop_geom_t fsgeo; 56 int error; 57 58 error = xfs_fs_geometry(&mp->m_sb, &fsgeo, 3); 59 if (error) 60 return error; 61 /* The 32-bit variant simply has some padding at the end */ 62 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1))) 63 return -EFAULT; 64 return 0; 65 } 66 67 STATIC int 68 xfs_compat_growfs_data_copyin( 69 struct xfs_growfs_data *in, 70 compat_xfs_growfs_data_t __user *arg32) 71 { 72 if (get_user(in->newblocks, &arg32->newblocks) || 73 get_user(in->imaxpct, &arg32->imaxpct)) 74 return -EFAULT; 75 return 0; 76 } 77 78 STATIC int 79 xfs_compat_growfs_rt_copyin( 80 struct xfs_growfs_rt *in, 81 compat_xfs_growfs_rt_t __user *arg32) 82 { 83 if (get_user(in->newblocks, &arg32->newblocks) || 84 get_user(in->extsize, &arg32->extsize)) 85 return -EFAULT; 86 return 0; 87 } 88 89 STATIC int 90 xfs_inumbers_fmt_compat( 91 void __user *ubuffer, 92 const struct xfs_inogrp *buffer, 93 long count, 94 long *written) 95 { 96 compat_xfs_inogrp_t __user *p32 = ubuffer; 97 long i; 98 99 for (i = 0; i < count; i++) { 100 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) || 101 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) || 102 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask)) 103 return -EFAULT; 104 } 105 *written = count * sizeof(*p32); 106 return 0; 107 } 108 109 #else 110 #define xfs_inumbers_fmt_compat xfs_inumbers_fmt 111 #endif /* BROKEN_X86_ALIGNMENT */ 112 113 STATIC int 114 xfs_ioctl32_bstime_copyin( 115 xfs_bstime_t *bstime, 116 compat_xfs_bstime_t __user *bstime32) 117 { 118 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */ 119 120 if (get_user(sec32, &bstime32->tv_sec) || 121 get_user(bstime->tv_nsec, &bstime32->tv_nsec)) 122 return -EFAULT; 123 bstime->tv_sec = sec32; 124 return 0; 125 } 126 127 /* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */ 128 STATIC int 129 xfs_ioctl32_bstat_copyin( 130 xfs_bstat_t *bstat, 131 compat_xfs_bstat_t __user *bstat32) 132 { 133 if (get_user(bstat->bs_ino, &bstat32->bs_ino) || 134 get_user(bstat->bs_mode, &bstat32->bs_mode) || 135 get_user(bstat->bs_nlink, &bstat32->bs_nlink) || 136 get_user(bstat->bs_uid, &bstat32->bs_uid) || 137 get_user(bstat->bs_gid, &bstat32->bs_gid) || 138 get_user(bstat->bs_rdev, &bstat32->bs_rdev) || 139 get_user(bstat->bs_blksize, &bstat32->bs_blksize) || 140 get_user(bstat->bs_size, &bstat32->bs_size) || 141 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) || 142 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) || 143 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) || 144 get_user(bstat->bs_blocks, &bstat32->bs_size) || 145 get_user(bstat->bs_xflags, &bstat32->bs_size) || 146 get_user(bstat->bs_extsize, &bstat32->bs_extsize) || 147 get_user(bstat->bs_extents, &bstat32->bs_extents) || 148 get_user(bstat->bs_gen, &bstat32->bs_gen) || 149 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) || 150 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) || 151 get_user(bstat->bs_forkoff, &bstat32->bs_forkoff) || 152 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) || 153 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) || 154 get_user(bstat->bs_aextents, &bstat32->bs_aextents)) 155 return -EFAULT; 156 return 0; 157 } 158 159 /* XFS_IOC_FSBULKSTAT and friends */ 160 161 STATIC int 162 xfs_bstime_store_compat( 163 compat_xfs_bstime_t __user *p32, 164 const xfs_bstime_t *p) 165 { 166 __s32 sec32; 167 168 sec32 = p->tv_sec; 169 if (put_user(sec32, &p32->tv_sec) || 170 put_user(p->tv_nsec, &p32->tv_nsec)) 171 return -EFAULT; 172 return 0; 173 } 174 175 /* Return 0 on success or positive error (to xfs_bulkstat()) */ 176 STATIC int 177 xfs_bulkstat_one_fmt_compat( 178 void __user *ubuffer, 179 int ubsize, 180 int *ubused, 181 const xfs_bstat_t *buffer) 182 { 183 compat_xfs_bstat_t __user *p32 = ubuffer; 184 185 if (ubsize < sizeof(*p32)) 186 return -ENOMEM; 187 188 if (put_user(buffer->bs_ino, &p32->bs_ino) || 189 put_user(buffer->bs_mode, &p32->bs_mode) || 190 put_user(buffer->bs_nlink, &p32->bs_nlink) || 191 put_user(buffer->bs_uid, &p32->bs_uid) || 192 put_user(buffer->bs_gid, &p32->bs_gid) || 193 put_user(buffer->bs_rdev, &p32->bs_rdev) || 194 put_user(buffer->bs_blksize, &p32->bs_blksize) || 195 put_user(buffer->bs_size, &p32->bs_size) || 196 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) || 197 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) || 198 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) || 199 put_user(buffer->bs_blocks, &p32->bs_blocks) || 200 put_user(buffer->bs_xflags, &p32->bs_xflags) || 201 put_user(buffer->bs_extsize, &p32->bs_extsize) || 202 put_user(buffer->bs_extents, &p32->bs_extents) || 203 put_user(buffer->bs_gen, &p32->bs_gen) || 204 put_user(buffer->bs_projid, &p32->bs_projid) || 205 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) || 206 put_user(buffer->bs_forkoff, &p32->bs_forkoff) || 207 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) || 208 put_user(buffer->bs_dmstate, &p32->bs_dmstate) || 209 put_user(buffer->bs_aextents, &p32->bs_aextents)) 210 return -EFAULT; 211 if (ubused) 212 *ubused = sizeof(*p32); 213 return 0; 214 } 215 216 STATIC int 217 xfs_bulkstat_one_compat( 218 xfs_mount_t *mp, /* mount point for filesystem */ 219 xfs_ino_t ino, /* inode number to get data for */ 220 void __user *buffer, /* buffer to place output in */ 221 int ubsize, /* size of buffer */ 222 int *ubused, /* bytes used by me */ 223 int *stat) /* BULKSTAT_RV_... */ 224 { 225 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize, 226 xfs_bulkstat_one_fmt_compat, 227 ubused, stat); 228 } 229 230 /* copied from xfs_ioctl.c */ 231 STATIC int 232 xfs_compat_ioc_bulkstat( 233 xfs_mount_t *mp, 234 unsigned int cmd, 235 compat_xfs_fsop_bulkreq_t __user *p32) 236 { 237 u32 addr; 238 xfs_fsop_bulkreq_t bulkreq; 239 int count; /* # of records returned */ 240 xfs_ino_t inlast; /* last inode number */ 241 int done; 242 int error; 243 244 /* done = 1 if there are more stats to get and if bulkstat */ 245 /* should be called again (unused here, but used in dmapi) */ 246 247 if (!capable(CAP_SYS_ADMIN)) 248 return -EPERM; 249 250 if (XFS_FORCED_SHUTDOWN(mp)) 251 return -EIO; 252 253 if (get_user(addr, &p32->lastip)) 254 return -EFAULT; 255 bulkreq.lastip = compat_ptr(addr); 256 if (get_user(bulkreq.icount, &p32->icount) || 257 get_user(addr, &p32->ubuffer)) 258 return -EFAULT; 259 bulkreq.ubuffer = compat_ptr(addr); 260 if (get_user(addr, &p32->ocount)) 261 return -EFAULT; 262 bulkreq.ocount = compat_ptr(addr); 263 264 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) 265 return -EFAULT; 266 267 if ((count = bulkreq.icount) <= 0) 268 return -EINVAL; 269 270 if (bulkreq.ubuffer == NULL) 271 return -EINVAL; 272 273 if (cmd == XFS_IOC_FSINUMBERS_32) { 274 error = xfs_inumbers(mp, &inlast, &count, 275 bulkreq.ubuffer, xfs_inumbers_fmt_compat); 276 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) { 277 int res; 278 279 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer, 280 sizeof(compat_xfs_bstat_t), NULL, &res); 281 } else if (cmd == XFS_IOC_FSBULKSTAT_32) { 282 error = xfs_bulkstat(mp, &inlast, &count, 283 xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t), 284 bulkreq.ubuffer, &done); 285 } else 286 error = -EINVAL; 287 if (error) 288 return error; 289 290 if (bulkreq.ocount != NULL) { 291 if (copy_to_user(bulkreq.lastip, &inlast, 292 sizeof(xfs_ino_t))) 293 return -EFAULT; 294 295 if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) 296 return -EFAULT; 297 } 298 299 return 0; 300 } 301 302 STATIC int 303 xfs_compat_handlereq_copyin( 304 xfs_fsop_handlereq_t *hreq, 305 compat_xfs_fsop_handlereq_t __user *arg32) 306 { 307 compat_xfs_fsop_handlereq_t hreq32; 308 309 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t))) 310 return -EFAULT; 311 312 hreq->fd = hreq32.fd; 313 hreq->path = compat_ptr(hreq32.path); 314 hreq->oflags = hreq32.oflags; 315 hreq->ihandle = compat_ptr(hreq32.ihandle); 316 hreq->ihandlen = hreq32.ihandlen; 317 hreq->ohandle = compat_ptr(hreq32.ohandle); 318 hreq->ohandlen = compat_ptr(hreq32.ohandlen); 319 320 return 0; 321 } 322 323 STATIC struct dentry * 324 xfs_compat_handlereq_to_dentry( 325 struct file *parfilp, 326 compat_xfs_fsop_handlereq_t *hreq) 327 { 328 return xfs_handle_to_dentry(parfilp, 329 compat_ptr(hreq->ihandle), hreq->ihandlen); 330 } 331 332 STATIC int 333 xfs_compat_attrlist_by_handle( 334 struct file *parfilp, 335 void __user *arg) 336 { 337 int error; 338 attrlist_cursor_kern_t *cursor; 339 compat_xfs_fsop_attrlist_handlereq_t al_hreq; 340 struct dentry *dentry; 341 char *kbuf; 342 343 if (!capable(CAP_SYS_ADMIN)) 344 return -EPERM; 345 if (copy_from_user(&al_hreq, arg, 346 sizeof(compat_xfs_fsop_attrlist_handlereq_t))) 347 return -EFAULT; 348 if (al_hreq.buflen < sizeof(struct attrlist) || 349 al_hreq.buflen > XFS_XATTR_LIST_MAX) 350 return -EINVAL; 351 352 /* 353 * Reject flags, only allow namespaces. 354 */ 355 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) 356 return -EINVAL; 357 358 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq); 359 if (IS_ERR(dentry)) 360 return PTR_ERR(dentry); 361 362 error = -ENOMEM; 363 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP); 364 if (!kbuf) 365 goto out_dput; 366 367 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; 368 error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen, 369 al_hreq.flags, cursor); 370 if (error) 371 goto out_kfree; 372 373 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen)) 374 error = -EFAULT; 375 376 out_kfree: 377 kmem_free(kbuf); 378 out_dput: 379 dput(dentry); 380 return error; 381 } 382 383 STATIC int 384 xfs_compat_attrmulti_by_handle( 385 struct file *parfilp, 386 void __user *arg) 387 { 388 int error; 389 compat_xfs_attr_multiop_t *ops; 390 compat_xfs_fsop_attrmulti_handlereq_t am_hreq; 391 struct dentry *dentry; 392 unsigned int i, size; 393 unsigned char *attr_name; 394 395 if (!capable(CAP_SYS_ADMIN)) 396 return -EPERM; 397 if (copy_from_user(&am_hreq, arg, 398 sizeof(compat_xfs_fsop_attrmulti_handlereq_t))) 399 return -EFAULT; 400 401 /* overflow check */ 402 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t)) 403 return -E2BIG; 404 405 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq); 406 if (IS_ERR(dentry)) 407 return PTR_ERR(dentry); 408 409 error = -E2BIG; 410 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t); 411 if (!size || size > 16 * PAGE_SIZE) 412 goto out_dput; 413 414 ops = memdup_user(compat_ptr(am_hreq.ops), size); 415 if (IS_ERR(ops)) { 416 error = PTR_ERR(ops); 417 goto out_dput; 418 } 419 420 error = -ENOMEM; 421 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); 422 if (!attr_name) 423 goto out_kfree_ops; 424 425 error = 0; 426 for (i = 0; i < am_hreq.opcount; i++) { 427 ops[i].am_error = strncpy_from_user((char *)attr_name, 428 compat_ptr(ops[i].am_attrname), 429 MAXNAMELEN); 430 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) 431 error = -ERANGE; 432 if (ops[i].am_error < 0) 433 break; 434 435 switch (ops[i].am_opcode) { 436 case ATTR_OP_GET: 437 ops[i].am_error = xfs_attrmulti_attr_get( 438 d_inode(dentry), attr_name, 439 compat_ptr(ops[i].am_attrvalue), 440 &ops[i].am_length, ops[i].am_flags); 441 break; 442 case ATTR_OP_SET: 443 ops[i].am_error = mnt_want_write_file(parfilp); 444 if (ops[i].am_error) 445 break; 446 ops[i].am_error = xfs_attrmulti_attr_set( 447 d_inode(dentry), attr_name, 448 compat_ptr(ops[i].am_attrvalue), 449 ops[i].am_length, ops[i].am_flags); 450 mnt_drop_write_file(parfilp); 451 break; 452 case ATTR_OP_REMOVE: 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_remove( 457 d_inode(dentry), attr_name, 458 ops[i].am_flags); 459 mnt_drop_write_file(parfilp); 460 break; 461 default: 462 ops[i].am_error = -EINVAL; 463 } 464 } 465 466 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size)) 467 error = -EFAULT; 468 469 kfree(attr_name); 470 out_kfree_ops: 471 kfree(ops); 472 out_dput: 473 dput(dentry); 474 return error; 475 } 476 477 STATIC int 478 xfs_compat_fssetdm_by_handle( 479 struct file *parfilp, 480 void __user *arg) 481 { 482 int error; 483 struct fsdmidata fsd; 484 compat_xfs_fsop_setdm_handlereq_t dmhreq; 485 struct dentry *dentry; 486 487 if (!capable(CAP_MKNOD)) 488 return -EPERM; 489 if (copy_from_user(&dmhreq, arg, 490 sizeof(compat_xfs_fsop_setdm_handlereq_t))) 491 return -EFAULT; 492 493 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq); 494 if (IS_ERR(dentry)) 495 return PTR_ERR(dentry); 496 497 if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) { 498 error = -EPERM; 499 goto out; 500 } 501 502 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) { 503 error = -EFAULT; 504 goto out; 505 } 506 507 error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask, 508 fsd.fsd_dmstate); 509 510 out: 511 dput(dentry); 512 return error; 513 } 514 515 long 516 xfs_file_compat_ioctl( 517 struct file *filp, 518 unsigned cmd, 519 unsigned long p) 520 { 521 struct inode *inode = file_inode(filp); 522 struct xfs_inode *ip = XFS_I(inode); 523 struct xfs_mount *mp = ip->i_mount; 524 void __user *arg = (void __user *)p; 525 int error; 526 527 trace_xfs_file_compat_ioctl(ip); 528 529 switch (cmd) { 530 /* No size or alignment issues on any arch */ 531 case XFS_IOC_DIOINFO: 532 case XFS_IOC_FSGEOMETRY: 533 case XFS_IOC_FSGETXATTR: 534 case XFS_IOC_FSSETXATTR: 535 case XFS_IOC_FSGETXATTRA: 536 case XFS_IOC_FSSETDM: 537 case XFS_IOC_GETBMAP: 538 case XFS_IOC_GETBMAPA: 539 case XFS_IOC_GETBMAPX: 540 case XFS_IOC_FSCOUNTS: 541 case XFS_IOC_SET_RESBLKS: 542 case XFS_IOC_GET_RESBLKS: 543 case XFS_IOC_FSGROWFSLOG: 544 case XFS_IOC_GOINGDOWN: 545 case XFS_IOC_ERROR_INJECTION: 546 case XFS_IOC_ERROR_CLEARALL: 547 case FS_IOC_GETFSMAP: 548 case XFS_IOC_SCRUB_METADATA: 549 return xfs_file_ioctl(filp, cmd, p); 550 #ifndef BROKEN_X86_ALIGNMENT 551 /* These are handled fine if no alignment issues */ 552 case XFS_IOC_ALLOCSP: 553 case XFS_IOC_FREESP: 554 case XFS_IOC_RESVSP: 555 case XFS_IOC_UNRESVSP: 556 case XFS_IOC_ALLOCSP64: 557 case XFS_IOC_FREESP64: 558 case XFS_IOC_RESVSP64: 559 case XFS_IOC_UNRESVSP64: 560 case XFS_IOC_FSGEOMETRY_V1: 561 case XFS_IOC_FSGROWFSDATA: 562 case XFS_IOC_FSGROWFSRT: 563 case XFS_IOC_ZERO_RANGE: 564 return xfs_file_ioctl(filp, cmd, p); 565 #else 566 case XFS_IOC_ALLOCSP_32: 567 case XFS_IOC_FREESP_32: 568 case XFS_IOC_ALLOCSP64_32: 569 case XFS_IOC_FREESP64_32: 570 case XFS_IOC_RESVSP_32: 571 case XFS_IOC_UNRESVSP_32: 572 case XFS_IOC_RESVSP64_32: 573 case XFS_IOC_UNRESVSP64_32: 574 case XFS_IOC_ZERO_RANGE_32: { 575 struct xfs_flock64 bf; 576 577 if (xfs_compat_flock64_copyin(&bf, arg)) 578 return -EFAULT; 579 cmd = _NATIVE_IOC(cmd, struct xfs_flock64); 580 return xfs_ioc_space(filp, cmd, &bf); 581 } 582 case XFS_IOC_FSGEOMETRY_V1_32: 583 return xfs_compat_ioc_fsgeometry_v1(mp, arg); 584 case XFS_IOC_FSGROWFSDATA_32: { 585 struct xfs_growfs_data in; 586 587 if (xfs_compat_growfs_data_copyin(&in, arg)) 588 return -EFAULT; 589 error = mnt_want_write_file(filp); 590 if (error) 591 return error; 592 error = xfs_growfs_data(mp, &in); 593 mnt_drop_write_file(filp); 594 return error; 595 } 596 case XFS_IOC_FSGROWFSRT_32: { 597 struct xfs_growfs_rt in; 598 599 if (xfs_compat_growfs_rt_copyin(&in, arg)) 600 return -EFAULT; 601 error = mnt_want_write_file(filp); 602 if (error) 603 return error; 604 error = xfs_growfs_rt(mp, &in); 605 mnt_drop_write_file(filp); 606 return error; 607 } 608 #endif 609 /* long changes size, but xfs only copiese out 32 bits */ 610 case XFS_IOC_GETXFLAGS_32: 611 case XFS_IOC_SETXFLAGS_32: 612 case XFS_IOC_GETVERSION_32: 613 cmd = _NATIVE_IOC(cmd, long); 614 return xfs_file_ioctl(filp, cmd, p); 615 case XFS_IOC_SWAPEXT_32: { 616 struct xfs_swapext sxp; 617 struct compat_xfs_swapext __user *sxu = arg; 618 619 /* Bulk copy in up to the sx_stat field, then copy bstat */ 620 if (copy_from_user(&sxp, sxu, 621 offsetof(struct xfs_swapext, sx_stat)) || 622 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat)) 623 return -EFAULT; 624 error = mnt_want_write_file(filp); 625 if (error) 626 return error; 627 error = xfs_ioc_swapext(&sxp); 628 mnt_drop_write_file(filp); 629 return error; 630 } 631 case XFS_IOC_FSBULKSTAT_32: 632 case XFS_IOC_FSBULKSTAT_SINGLE_32: 633 case XFS_IOC_FSINUMBERS_32: 634 return xfs_compat_ioc_bulkstat(mp, cmd, arg); 635 case XFS_IOC_FD_TO_HANDLE_32: 636 case XFS_IOC_PATH_TO_HANDLE_32: 637 case XFS_IOC_PATH_TO_FSHANDLE_32: { 638 struct xfs_fsop_handlereq hreq; 639 640 if (xfs_compat_handlereq_copyin(&hreq, arg)) 641 return -EFAULT; 642 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq); 643 return xfs_find_handle(cmd, &hreq); 644 } 645 case XFS_IOC_OPEN_BY_HANDLE_32: { 646 struct xfs_fsop_handlereq hreq; 647 648 if (xfs_compat_handlereq_copyin(&hreq, arg)) 649 return -EFAULT; 650 return xfs_open_by_handle(filp, &hreq); 651 } 652 case XFS_IOC_READLINK_BY_HANDLE_32: { 653 struct xfs_fsop_handlereq hreq; 654 655 if (xfs_compat_handlereq_copyin(&hreq, arg)) 656 return -EFAULT; 657 return xfs_readlink_by_handle(filp, &hreq); 658 } 659 case XFS_IOC_ATTRLIST_BY_HANDLE_32: 660 return xfs_compat_attrlist_by_handle(filp, arg); 661 case XFS_IOC_ATTRMULTI_BY_HANDLE_32: 662 return xfs_compat_attrmulti_by_handle(filp, arg); 663 case XFS_IOC_FSSETDM_BY_HANDLE_32: 664 return xfs_compat_fssetdm_by_handle(filp, arg); 665 default: 666 return -ENOIOCTLCMD; 667 } 668 } 669