1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000-2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #include "xfs.h" 7 #include "xfs_fs.h" 8 #include "xfs_shared.h" 9 #include "xfs_format.h" 10 #include "xfs_log_format.h" 11 #include "xfs_trans_resv.h" 12 #include "xfs_mount.h" 13 #include "xfs_inode.h" 14 #include "xfs_rtalloc.h" 15 #include "xfs_iwalk.h" 16 #include "xfs_itable.h" 17 #include "xfs_error.h" 18 #include "xfs_da_format.h" 19 #include "xfs_da_btree.h" 20 #include "xfs_attr.h" 21 #include "xfs_bmap.h" 22 #include "xfs_bmap_util.h" 23 #include "xfs_fsops.h" 24 #include "xfs_discard.h" 25 #include "xfs_quota.h" 26 #include "xfs_trace.h" 27 #include "xfs_icache.h" 28 #include "xfs_trans.h" 29 #include "xfs_btree.h" 30 #include <linux/fsmap.h> 31 #include "xfs_fsmap.h" 32 #include "scrub/xfs_scrub.h" 33 #include "xfs_sb.h" 34 #include "xfs_ag.h" 35 #include "xfs_health.h" 36 #include "xfs_reflink.h" 37 #include "xfs_ioctl.h" 38 #include "xfs_xattr.h" 39 #include "xfs_rtbitmap.h" 40 #include "xfs_file.h" 41 #include "xfs_exchrange.h" 42 #include "xfs_handle.h" 43 44 #include <linux/mount.h> 45 #include <linux/fileattr.h> 46 47 /* Return 0 on success or positive error */ 48 int 49 xfs_fsbulkstat_one_fmt( 50 struct xfs_ibulk *breq, 51 const struct xfs_bulkstat *bstat) 52 { 53 struct xfs_bstat bs1; 54 55 xfs_bulkstat_to_bstat(breq->mp, &bs1, bstat); 56 if (copy_to_user(breq->ubuffer, &bs1, sizeof(bs1))) 57 return -EFAULT; 58 return xfs_ibulk_advance(breq, sizeof(struct xfs_bstat)); 59 } 60 61 int 62 xfs_fsinumbers_fmt( 63 struct xfs_ibulk *breq, 64 const struct xfs_inumbers *igrp) 65 { 66 struct xfs_inogrp ig1; 67 68 xfs_inumbers_to_inogrp(&ig1, igrp); 69 if (copy_to_user(breq->ubuffer, &ig1, sizeof(struct xfs_inogrp))) 70 return -EFAULT; 71 return xfs_ibulk_advance(breq, sizeof(struct xfs_inogrp)); 72 } 73 74 STATIC int 75 xfs_ioc_fsbulkstat( 76 struct file *file, 77 unsigned int cmd, 78 void __user *arg) 79 { 80 struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount; 81 struct xfs_fsop_bulkreq bulkreq; 82 struct xfs_ibulk breq = { 83 .mp = mp, 84 .idmap = file_mnt_idmap(file), 85 .ocount = 0, 86 }; 87 xfs_ino_t lastino; 88 int error; 89 90 /* done = 1 if there are more stats to get and if bulkstat */ 91 /* should be called again (unused here, but used in dmapi) */ 92 93 if (!capable(CAP_SYS_ADMIN)) 94 return -EPERM; 95 96 if (xfs_is_shutdown(mp)) 97 return -EIO; 98 99 if (copy_from_user(&bulkreq, arg, sizeof(struct xfs_fsop_bulkreq))) 100 return -EFAULT; 101 102 if (copy_from_user(&lastino, bulkreq.lastip, sizeof(__s64))) 103 return -EFAULT; 104 105 if (bulkreq.icount <= 0) 106 return -EINVAL; 107 108 if (bulkreq.ubuffer == NULL) 109 return -EINVAL; 110 111 breq.ubuffer = bulkreq.ubuffer; 112 breq.icount = bulkreq.icount; 113 114 /* 115 * FSBULKSTAT_SINGLE expects that *lastip contains the inode number 116 * that we want to stat. However, FSINUMBERS and FSBULKSTAT expect 117 * that *lastip contains either zero or the number of the last inode to 118 * be examined by the previous call and return results starting with 119 * the next inode after that. The new bulk request back end functions 120 * take the inode to start with, so we have to compute the startino 121 * parameter from lastino to maintain correct function. lastino == 0 122 * is a special case because it has traditionally meant "first inode 123 * in filesystem". 124 */ 125 if (cmd == XFS_IOC_FSINUMBERS) { 126 breq.startino = lastino ? lastino + 1 : 0; 127 error = xfs_inumbers(&breq, xfs_fsinumbers_fmt); 128 lastino = breq.startino - 1; 129 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) { 130 breq.startino = lastino; 131 breq.icount = 1; 132 error = xfs_bulkstat_one(&breq, xfs_fsbulkstat_one_fmt); 133 } else { /* XFS_IOC_FSBULKSTAT */ 134 breq.startino = lastino ? lastino + 1 : 0; 135 error = xfs_bulkstat(&breq, xfs_fsbulkstat_one_fmt); 136 lastino = breq.startino - 1; 137 } 138 139 if (error) 140 return error; 141 142 if (bulkreq.lastip != NULL && 143 copy_to_user(bulkreq.lastip, &lastino, sizeof(xfs_ino_t))) 144 return -EFAULT; 145 146 if (bulkreq.ocount != NULL && 147 copy_to_user(bulkreq.ocount, &breq.ocount, sizeof(__s32))) 148 return -EFAULT; 149 150 return 0; 151 } 152 153 /* Return 0 on success or positive error */ 154 static int 155 xfs_bulkstat_fmt( 156 struct xfs_ibulk *breq, 157 const struct xfs_bulkstat *bstat) 158 { 159 if (copy_to_user(breq->ubuffer, bstat, sizeof(struct xfs_bulkstat))) 160 return -EFAULT; 161 return xfs_ibulk_advance(breq, sizeof(struct xfs_bulkstat)); 162 } 163 164 /* 165 * Check the incoming bulk request @hdr from userspace and initialize the 166 * internal @breq bulk request appropriately. Returns 0 if the bulk request 167 * should proceed; -ECANCELED if there's nothing to do; or the usual 168 * negative error code. 169 */ 170 static int 171 xfs_bulk_ireq_setup( 172 struct xfs_mount *mp, 173 const struct xfs_bulk_ireq *hdr, 174 struct xfs_ibulk *breq, 175 void __user *ubuffer) 176 { 177 if (hdr->icount == 0 || 178 (hdr->flags & ~XFS_BULK_IREQ_FLAGS_ALL) || 179 memchr_inv(hdr->reserved, 0, sizeof(hdr->reserved))) 180 return -EINVAL; 181 182 breq->startino = hdr->ino; 183 breq->ubuffer = ubuffer; 184 breq->icount = hdr->icount; 185 breq->ocount = 0; 186 breq->flags = 0; 187 188 /* 189 * The @ino parameter is a special value, so we must look it up here. 190 * We're not allowed to have IREQ_AGNO, and we only return one inode 191 * worth of data. 192 */ 193 if (hdr->flags & XFS_BULK_IREQ_SPECIAL) { 194 if (hdr->flags & XFS_BULK_IREQ_AGNO) 195 return -EINVAL; 196 197 switch (hdr->ino) { 198 case XFS_BULK_IREQ_SPECIAL_ROOT: 199 breq->startino = mp->m_sb.sb_rootino; 200 break; 201 default: 202 return -EINVAL; 203 } 204 breq->icount = 1; 205 } 206 207 /* 208 * The IREQ_AGNO flag means that we only want results from a given AG. 209 * If @hdr->ino is zero, we start iterating in that AG. If @hdr->ino is 210 * beyond the specified AG then we return no results. 211 */ 212 if (hdr->flags & XFS_BULK_IREQ_AGNO) { 213 if (hdr->agno >= mp->m_sb.sb_agcount) 214 return -EINVAL; 215 216 if (breq->startino == 0) 217 breq->startino = XFS_AGINO_TO_INO(mp, hdr->agno, 0); 218 else if (XFS_INO_TO_AGNO(mp, breq->startino) < hdr->agno) 219 return -EINVAL; 220 221 breq->flags |= XFS_IBULK_SAME_AG; 222 223 /* Asking for an inode past the end of the AG? We're done! */ 224 if (XFS_INO_TO_AGNO(mp, breq->startino) > hdr->agno) 225 return -ECANCELED; 226 } else if (hdr->agno) 227 return -EINVAL; 228 229 /* Asking for an inode past the end of the FS? We're done! */ 230 if (XFS_INO_TO_AGNO(mp, breq->startino) >= mp->m_sb.sb_agcount) 231 return -ECANCELED; 232 233 if (hdr->flags & XFS_BULK_IREQ_NREXT64) 234 breq->flags |= XFS_IBULK_NREXT64; 235 236 return 0; 237 } 238 239 /* 240 * Update the userspace bulk request @hdr to reflect the end state of the 241 * internal bulk request @breq. 242 */ 243 static void 244 xfs_bulk_ireq_teardown( 245 struct xfs_bulk_ireq *hdr, 246 struct xfs_ibulk *breq) 247 { 248 hdr->ino = breq->startino; 249 hdr->ocount = breq->ocount; 250 } 251 252 /* Handle the v5 bulkstat ioctl. */ 253 STATIC int 254 xfs_ioc_bulkstat( 255 struct file *file, 256 unsigned int cmd, 257 struct xfs_bulkstat_req __user *arg) 258 { 259 struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount; 260 struct xfs_bulk_ireq hdr; 261 struct xfs_ibulk breq = { 262 .mp = mp, 263 .idmap = file_mnt_idmap(file), 264 }; 265 int error; 266 267 if (!capable(CAP_SYS_ADMIN)) 268 return -EPERM; 269 270 if (xfs_is_shutdown(mp)) 271 return -EIO; 272 273 if (copy_from_user(&hdr, &arg->hdr, sizeof(hdr))) 274 return -EFAULT; 275 276 error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->bulkstat); 277 if (error == -ECANCELED) 278 goto out_teardown; 279 if (error < 0) 280 return error; 281 282 error = xfs_bulkstat(&breq, xfs_bulkstat_fmt); 283 if (error) 284 return error; 285 286 out_teardown: 287 xfs_bulk_ireq_teardown(&hdr, &breq); 288 if (copy_to_user(&arg->hdr, &hdr, sizeof(hdr))) 289 return -EFAULT; 290 291 return 0; 292 } 293 294 STATIC int 295 xfs_inumbers_fmt( 296 struct xfs_ibulk *breq, 297 const struct xfs_inumbers *igrp) 298 { 299 if (copy_to_user(breq->ubuffer, igrp, sizeof(struct xfs_inumbers))) 300 return -EFAULT; 301 return xfs_ibulk_advance(breq, sizeof(struct xfs_inumbers)); 302 } 303 304 /* Handle the v5 inumbers ioctl. */ 305 STATIC int 306 xfs_ioc_inumbers( 307 struct xfs_mount *mp, 308 unsigned int cmd, 309 struct xfs_inumbers_req __user *arg) 310 { 311 struct xfs_bulk_ireq hdr; 312 struct xfs_ibulk breq = { 313 .mp = mp, 314 }; 315 int error; 316 317 if (!capable(CAP_SYS_ADMIN)) 318 return -EPERM; 319 320 if (xfs_is_shutdown(mp)) 321 return -EIO; 322 323 if (copy_from_user(&hdr, &arg->hdr, sizeof(hdr))) 324 return -EFAULT; 325 326 error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->inumbers); 327 if (error == -ECANCELED) 328 goto out_teardown; 329 if (error < 0) 330 return error; 331 332 error = xfs_inumbers(&breq, xfs_inumbers_fmt); 333 if (error) 334 return error; 335 336 out_teardown: 337 xfs_bulk_ireq_teardown(&hdr, &breq); 338 if (copy_to_user(&arg->hdr, &hdr, sizeof(hdr))) 339 return -EFAULT; 340 341 return 0; 342 } 343 344 STATIC int 345 xfs_ioc_fsgeometry( 346 struct xfs_mount *mp, 347 void __user *arg, 348 int struct_version) 349 { 350 struct xfs_fsop_geom fsgeo; 351 size_t len; 352 353 xfs_fs_geometry(mp, &fsgeo, struct_version); 354 355 if (struct_version <= 3) 356 len = sizeof(struct xfs_fsop_geom_v1); 357 else if (struct_version == 4) 358 len = sizeof(struct xfs_fsop_geom_v4); 359 else { 360 xfs_fsop_geom_health(mp, &fsgeo); 361 len = sizeof(fsgeo); 362 } 363 364 if (copy_to_user(arg, &fsgeo, len)) 365 return -EFAULT; 366 return 0; 367 } 368 369 STATIC int 370 xfs_ioc_ag_geometry( 371 struct xfs_mount *mp, 372 void __user *arg) 373 { 374 struct xfs_perag *pag; 375 struct xfs_ag_geometry ageo; 376 int error; 377 378 if (copy_from_user(&ageo, arg, sizeof(ageo))) 379 return -EFAULT; 380 if (ageo.ag_flags) 381 return -EINVAL; 382 if (memchr_inv(&ageo.ag_reserved, 0, sizeof(ageo.ag_reserved))) 383 return -EINVAL; 384 385 pag = xfs_perag_get(mp, ageo.ag_number); 386 if (!pag) 387 return -EINVAL; 388 389 error = xfs_ag_get_geometry(pag, &ageo); 390 xfs_perag_put(pag); 391 if (error) 392 return error; 393 394 if (copy_to_user(arg, &ageo, sizeof(ageo))) 395 return -EFAULT; 396 return 0; 397 } 398 399 /* 400 * Linux extended inode flags interface. 401 */ 402 403 static void 404 xfs_fill_fsxattr( 405 struct xfs_inode *ip, 406 int whichfork, 407 struct fileattr *fa) 408 { 409 struct xfs_mount *mp = ip->i_mount; 410 struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); 411 412 fileattr_fill_xflags(fa, xfs_ip2xflags(ip)); 413 414 if (ip->i_diflags & XFS_DIFLAG_EXTSIZE) { 415 fa->fsx_extsize = XFS_FSB_TO_B(mp, ip->i_extsize); 416 } else if (ip->i_diflags & XFS_DIFLAG_EXTSZINHERIT) { 417 /* 418 * Don't let a misaligned extent size hint on a directory 419 * escape to userspace if it won't pass the setattr checks 420 * later. 421 */ 422 if ((ip->i_diflags & XFS_DIFLAG_RTINHERIT) && 423 xfs_extlen_to_rtxmod(mp, ip->i_extsize) > 0) { 424 fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | 425 FS_XFLAG_EXTSZINHERIT); 426 fa->fsx_extsize = 0; 427 } else { 428 fa->fsx_extsize = XFS_FSB_TO_B(mp, ip->i_extsize); 429 } 430 } 431 432 if (ip->i_diflags2 & XFS_DIFLAG2_COWEXTSIZE) 433 fa->fsx_cowextsize = XFS_FSB_TO_B(mp, ip->i_cowextsize); 434 fa->fsx_projid = ip->i_projid; 435 if (ifp && !xfs_need_iread_extents(ifp)) 436 fa->fsx_nextents = xfs_iext_count(ifp); 437 else 438 fa->fsx_nextents = xfs_ifork_nextents(ifp); 439 } 440 441 STATIC int 442 xfs_ioc_fsgetxattra( 443 xfs_inode_t *ip, 444 void __user *arg) 445 { 446 struct fileattr fa; 447 448 xfs_ilock(ip, XFS_ILOCK_SHARED); 449 xfs_fill_fsxattr(ip, XFS_ATTR_FORK, &fa); 450 xfs_iunlock(ip, XFS_ILOCK_SHARED); 451 452 return copy_fsxattr_to_user(&fa, arg); 453 } 454 455 int 456 xfs_fileattr_get( 457 struct dentry *dentry, 458 struct fileattr *fa) 459 { 460 struct xfs_inode *ip = XFS_I(d_inode(dentry)); 461 462 if (d_is_special(dentry)) 463 return -ENOTTY; 464 465 xfs_ilock(ip, XFS_ILOCK_SHARED); 466 xfs_fill_fsxattr(ip, XFS_DATA_FORK, fa); 467 xfs_iunlock(ip, XFS_ILOCK_SHARED); 468 469 return 0; 470 } 471 472 static int 473 xfs_ioctl_setattr_xflags( 474 struct xfs_trans *tp, 475 struct xfs_inode *ip, 476 struct fileattr *fa) 477 { 478 struct xfs_mount *mp = ip->i_mount; 479 bool rtflag = (fa->fsx_xflags & FS_XFLAG_REALTIME); 480 uint64_t i_flags2; 481 482 if (rtflag != XFS_IS_REALTIME_INODE(ip)) { 483 /* Can't change realtime flag if any extents are allocated. */ 484 if (ip->i_df.if_nextents || ip->i_delayed_blks) 485 return -EINVAL; 486 } 487 488 if (rtflag) { 489 /* If realtime flag is set then must have realtime device */ 490 if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 || 491 xfs_extlen_to_rtxmod(mp, ip->i_extsize)) 492 return -EINVAL; 493 494 /* Clear reflink if we are actually able to set the rt flag. */ 495 if (xfs_is_reflink_inode(ip)) 496 ip->i_diflags2 &= ~XFS_DIFLAG2_REFLINK; 497 } 498 499 /* diflags2 only valid for v3 inodes. */ 500 i_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags); 501 if (i_flags2 && !xfs_has_v3inodes(mp)) 502 return -EINVAL; 503 504 ip->i_diflags = xfs_flags2diflags(ip, fa->fsx_xflags); 505 ip->i_diflags2 = i_flags2; 506 507 xfs_diflags_to_iflags(ip, false); 508 509 /* 510 * Make the stable writes flag match that of the device the inode 511 * resides on when flipping the RT flag. 512 */ 513 if (rtflag != XFS_IS_REALTIME_INODE(ip) && S_ISREG(VFS_I(ip)->i_mode)) 514 xfs_update_stable_writes(ip); 515 516 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); 517 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); 518 XFS_STATS_INC(mp, xs_ig_attrchg); 519 return 0; 520 } 521 522 static void 523 xfs_ioctl_setattr_prepare_dax( 524 struct xfs_inode *ip, 525 struct fileattr *fa) 526 { 527 struct xfs_mount *mp = ip->i_mount; 528 struct inode *inode = VFS_I(ip); 529 530 if (S_ISDIR(inode->i_mode)) 531 return; 532 533 if (xfs_has_dax_always(mp) || xfs_has_dax_never(mp)) 534 return; 535 536 if (((fa->fsx_xflags & FS_XFLAG_DAX) && 537 !(ip->i_diflags2 & XFS_DIFLAG2_DAX)) || 538 (!(fa->fsx_xflags & FS_XFLAG_DAX) && 539 (ip->i_diflags2 & XFS_DIFLAG2_DAX))) 540 d_mark_dontcache(inode); 541 } 542 543 /* 544 * Set up the transaction structure for the setattr operation, checking that we 545 * have permission to do so. On success, return a clean transaction and the 546 * inode locked exclusively ready for further operation specific checks. On 547 * failure, return an error without modifying or locking the inode. 548 */ 549 static struct xfs_trans * 550 xfs_ioctl_setattr_get_trans( 551 struct xfs_inode *ip, 552 struct xfs_dquot *pdqp) 553 { 554 struct xfs_mount *mp = ip->i_mount; 555 struct xfs_trans *tp; 556 int error = -EROFS; 557 558 if (xfs_is_readonly(mp)) 559 goto out_error; 560 error = -EIO; 561 if (xfs_is_shutdown(mp)) 562 goto out_error; 563 564 error = xfs_trans_alloc_ichange(ip, NULL, NULL, pdqp, 565 has_capability_noaudit(current, CAP_FOWNER), &tp); 566 if (error) 567 goto out_error; 568 569 if (xfs_has_wsync(mp)) 570 xfs_trans_set_sync(tp); 571 572 return tp; 573 574 out_error: 575 return ERR_PTR(error); 576 } 577 578 /* 579 * Validate a proposed extent size hint. For regular files, the hint can only 580 * be changed if no extents are allocated. 581 */ 582 static int 583 xfs_ioctl_setattr_check_extsize( 584 struct xfs_inode *ip, 585 struct fileattr *fa) 586 { 587 struct xfs_mount *mp = ip->i_mount; 588 xfs_failaddr_t failaddr; 589 uint16_t new_diflags; 590 591 if (!fa->fsx_valid) 592 return 0; 593 594 if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_df.if_nextents && 595 XFS_FSB_TO_B(mp, ip->i_extsize) != fa->fsx_extsize) 596 return -EINVAL; 597 598 if (fa->fsx_extsize & mp->m_blockmask) 599 return -EINVAL; 600 601 new_diflags = xfs_flags2diflags(ip, fa->fsx_xflags); 602 603 /* 604 * Inode verifiers do not check that the extent size hint is an integer 605 * multiple of the rt extent size on a directory with both rtinherit 606 * and extszinherit flags set. Don't let sysadmins misconfigure 607 * directories. 608 */ 609 if ((new_diflags & XFS_DIFLAG_RTINHERIT) && 610 (new_diflags & XFS_DIFLAG_EXTSZINHERIT)) { 611 unsigned int rtextsize_bytes; 612 613 rtextsize_bytes = XFS_FSB_TO_B(mp, mp->m_sb.sb_rextsize); 614 if (fa->fsx_extsize % rtextsize_bytes) 615 return -EINVAL; 616 } 617 618 failaddr = xfs_inode_validate_extsize(ip->i_mount, 619 XFS_B_TO_FSB(mp, fa->fsx_extsize), 620 VFS_I(ip)->i_mode, new_diflags); 621 return failaddr != NULL ? -EINVAL : 0; 622 } 623 624 static int 625 xfs_ioctl_setattr_check_cowextsize( 626 struct xfs_inode *ip, 627 struct fileattr *fa) 628 { 629 struct xfs_mount *mp = ip->i_mount; 630 xfs_failaddr_t failaddr; 631 uint64_t new_diflags2; 632 uint16_t new_diflags; 633 634 if (!fa->fsx_valid) 635 return 0; 636 637 if (fa->fsx_cowextsize & mp->m_blockmask) 638 return -EINVAL; 639 640 new_diflags = xfs_flags2diflags(ip, fa->fsx_xflags); 641 new_diflags2 = xfs_flags2diflags2(ip, fa->fsx_xflags); 642 643 failaddr = xfs_inode_validate_cowextsize(ip->i_mount, 644 XFS_B_TO_FSB(mp, fa->fsx_cowextsize), 645 VFS_I(ip)->i_mode, new_diflags, new_diflags2); 646 return failaddr != NULL ? -EINVAL : 0; 647 } 648 649 static int 650 xfs_ioctl_setattr_check_projid( 651 struct xfs_inode *ip, 652 struct fileattr *fa) 653 { 654 if (!fa->fsx_valid) 655 return 0; 656 657 /* Disallow 32bit project ids if 32bit IDs are not enabled. */ 658 if (fa->fsx_projid > (uint16_t)-1 && 659 !xfs_has_projid32(ip->i_mount)) 660 return -EINVAL; 661 return 0; 662 } 663 664 int 665 xfs_fileattr_set( 666 struct mnt_idmap *idmap, 667 struct dentry *dentry, 668 struct fileattr *fa) 669 { 670 struct xfs_inode *ip = XFS_I(d_inode(dentry)); 671 struct xfs_mount *mp = ip->i_mount; 672 struct xfs_trans *tp; 673 struct xfs_dquot *pdqp = NULL; 674 struct xfs_dquot *olddquot = NULL; 675 int error; 676 677 trace_xfs_ioctl_setattr(ip); 678 679 if (d_is_special(dentry)) 680 return -ENOTTY; 681 682 if (!fa->fsx_valid) { 683 if (fa->flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | 684 FS_NOATIME_FL | FS_NODUMP_FL | 685 FS_SYNC_FL | FS_DAX_FL | FS_PROJINHERIT_FL)) 686 return -EOPNOTSUPP; 687 } 688 689 error = xfs_ioctl_setattr_check_projid(ip, fa); 690 if (error) 691 return error; 692 693 /* 694 * If disk quotas is on, we make sure that the dquots do exist on disk, 695 * before we start any other transactions. Trying to do this later 696 * is messy. We don't care to take a readlock to look at the ids 697 * in inode here, because we can't hold it across the trans_reserve. 698 * If the IDs do change before we take the ilock, we're covered 699 * because the i_*dquot fields will get updated anyway. 700 */ 701 if (fa->fsx_valid && XFS_IS_QUOTA_ON(mp)) { 702 error = xfs_qm_vop_dqalloc(ip, VFS_I(ip)->i_uid, 703 VFS_I(ip)->i_gid, fa->fsx_projid, 704 XFS_QMOPT_PQUOTA, NULL, NULL, &pdqp); 705 if (error) 706 return error; 707 } 708 709 xfs_ioctl_setattr_prepare_dax(ip, fa); 710 711 tp = xfs_ioctl_setattr_get_trans(ip, pdqp); 712 if (IS_ERR(tp)) { 713 error = PTR_ERR(tp); 714 goto error_free_dquots; 715 } 716 717 error = xfs_ioctl_setattr_check_extsize(ip, fa); 718 if (error) 719 goto error_trans_cancel; 720 721 error = xfs_ioctl_setattr_check_cowextsize(ip, fa); 722 if (error) 723 goto error_trans_cancel; 724 725 error = xfs_ioctl_setattr_xflags(tp, ip, fa); 726 if (error) 727 goto error_trans_cancel; 728 729 if (!fa->fsx_valid) 730 goto skip_xattr; 731 /* 732 * Change file ownership. Must be the owner or privileged. CAP_FSETID 733 * overrides the following restrictions: 734 * 735 * The set-user-ID and set-group-ID bits of a file will be cleared upon 736 * successful return from chown() 737 */ 738 739 if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) && 740 !capable_wrt_inode_uidgid(idmap, VFS_I(ip), CAP_FSETID)) 741 VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID); 742 743 /* Change the ownerships and register project quota modifications */ 744 if (ip->i_projid != fa->fsx_projid) { 745 if (XFS_IS_PQUOTA_ON(mp)) { 746 olddquot = xfs_qm_vop_chown(tp, ip, 747 &ip->i_pdquot, pdqp); 748 } 749 ip->i_projid = fa->fsx_projid; 750 } 751 752 /* 753 * Only set the extent size hint if we've already determined that the 754 * extent size hint should be set on the inode. If no extent size flags 755 * are set on the inode then unconditionally clear the extent size hint. 756 */ 757 if (ip->i_diflags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT)) 758 ip->i_extsize = XFS_B_TO_FSB(mp, fa->fsx_extsize); 759 else 760 ip->i_extsize = 0; 761 762 if (xfs_has_v3inodes(mp)) { 763 if (ip->i_diflags2 & XFS_DIFLAG2_COWEXTSIZE) 764 ip->i_cowextsize = XFS_B_TO_FSB(mp, fa->fsx_cowextsize); 765 else 766 ip->i_cowextsize = 0; 767 } 768 769 skip_xattr: 770 error = xfs_trans_commit(tp); 771 772 /* 773 * Release any dquot(s) the inode had kept before chown. 774 */ 775 xfs_qm_dqrele(olddquot); 776 xfs_qm_dqrele(pdqp); 777 778 return error; 779 780 error_trans_cancel: 781 xfs_trans_cancel(tp); 782 error_free_dquots: 783 xfs_qm_dqrele(pdqp); 784 return error; 785 } 786 787 static bool 788 xfs_getbmap_format( 789 struct kgetbmap *p, 790 struct getbmapx __user *u, 791 size_t recsize) 792 { 793 if (put_user(p->bmv_offset, &u->bmv_offset) || 794 put_user(p->bmv_block, &u->bmv_block) || 795 put_user(p->bmv_length, &u->bmv_length) || 796 put_user(0, &u->bmv_count) || 797 put_user(0, &u->bmv_entries)) 798 return false; 799 if (recsize < sizeof(struct getbmapx)) 800 return true; 801 if (put_user(0, &u->bmv_iflags) || 802 put_user(p->bmv_oflags, &u->bmv_oflags) || 803 put_user(0, &u->bmv_unused1) || 804 put_user(0, &u->bmv_unused2)) 805 return false; 806 return true; 807 } 808 809 STATIC int 810 xfs_ioc_getbmap( 811 struct file *file, 812 unsigned int cmd, 813 void __user *arg) 814 { 815 struct getbmapx bmx = { 0 }; 816 struct kgetbmap *buf; 817 size_t recsize; 818 int error, i; 819 820 switch (cmd) { 821 case XFS_IOC_GETBMAPA: 822 bmx.bmv_iflags = BMV_IF_ATTRFORK; 823 fallthrough; 824 case XFS_IOC_GETBMAP: 825 /* struct getbmap is a strict subset of struct getbmapx. */ 826 recsize = sizeof(struct getbmap); 827 break; 828 case XFS_IOC_GETBMAPX: 829 recsize = sizeof(struct getbmapx); 830 break; 831 default: 832 return -EINVAL; 833 } 834 835 if (copy_from_user(&bmx, arg, recsize)) 836 return -EFAULT; 837 838 if (bmx.bmv_count < 2) 839 return -EINVAL; 840 if (bmx.bmv_count >= INT_MAX / recsize) 841 return -ENOMEM; 842 843 buf = kvcalloc(bmx.bmv_count, sizeof(*buf), GFP_KERNEL); 844 if (!buf) 845 return -ENOMEM; 846 847 error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, buf); 848 if (error) 849 goto out_free_buf; 850 851 error = -EFAULT; 852 if (copy_to_user(arg, &bmx, recsize)) 853 goto out_free_buf; 854 arg += recsize; 855 856 for (i = 0; i < bmx.bmv_entries; i++) { 857 if (!xfs_getbmap_format(buf + i, arg, recsize)) 858 goto out_free_buf; 859 arg += recsize; 860 } 861 862 error = 0; 863 out_free_buf: 864 kvfree(buf); 865 return error; 866 } 867 868 STATIC int 869 xfs_ioc_getfsmap( 870 struct xfs_inode *ip, 871 struct fsmap_head __user *arg) 872 { 873 struct xfs_fsmap_head xhead = {0}; 874 struct fsmap_head head; 875 struct fsmap *recs; 876 unsigned int count; 877 __u32 last_flags = 0; 878 bool done = false; 879 int error; 880 881 if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) 882 return -EFAULT; 883 if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || 884 memchr_inv(head.fmh_keys[0].fmr_reserved, 0, 885 sizeof(head.fmh_keys[0].fmr_reserved)) || 886 memchr_inv(head.fmh_keys[1].fmr_reserved, 0, 887 sizeof(head.fmh_keys[1].fmr_reserved))) 888 return -EINVAL; 889 890 /* 891 * Use an internal memory buffer so that we don't have to copy fsmap 892 * data to userspace while holding locks. Start by trying to allocate 893 * up to 128k for the buffer, but fall back to a single page if needed. 894 */ 895 count = min_t(unsigned int, head.fmh_count, 896 131072 / sizeof(struct fsmap)); 897 recs = kvcalloc(count, sizeof(struct fsmap), GFP_KERNEL); 898 if (!recs) { 899 count = min_t(unsigned int, head.fmh_count, 900 PAGE_SIZE / sizeof(struct fsmap)); 901 recs = kvcalloc(count, sizeof(struct fsmap), GFP_KERNEL); 902 if (!recs) 903 return -ENOMEM; 904 } 905 906 xhead.fmh_iflags = head.fmh_iflags; 907 xfs_fsmap_to_internal(&xhead.fmh_keys[0], &head.fmh_keys[0]); 908 xfs_fsmap_to_internal(&xhead.fmh_keys[1], &head.fmh_keys[1]); 909 910 trace_xfs_getfsmap_low_key(ip->i_mount, &xhead.fmh_keys[0]); 911 trace_xfs_getfsmap_high_key(ip->i_mount, &xhead.fmh_keys[1]); 912 913 head.fmh_entries = 0; 914 do { 915 struct fsmap __user *user_recs; 916 struct fsmap *last_rec; 917 918 user_recs = &arg->fmh_recs[head.fmh_entries]; 919 xhead.fmh_entries = 0; 920 xhead.fmh_count = min_t(unsigned int, count, 921 head.fmh_count - head.fmh_entries); 922 923 /* Run query, record how many entries we got. */ 924 error = xfs_getfsmap(ip->i_mount, &xhead, recs); 925 switch (error) { 926 case 0: 927 /* 928 * There are no more records in the result set. Copy 929 * whatever we got to userspace and break out. 930 */ 931 done = true; 932 break; 933 case -ECANCELED: 934 /* 935 * The internal memory buffer is full. Copy whatever 936 * records we got to userspace and go again if we have 937 * not yet filled the userspace buffer. 938 */ 939 error = 0; 940 break; 941 default: 942 goto out_free; 943 } 944 head.fmh_entries += xhead.fmh_entries; 945 head.fmh_oflags = xhead.fmh_oflags; 946 947 /* 948 * If the caller wanted a record count or there aren't any 949 * new records to return, we're done. 950 */ 951 if (head.fmh_count == 0 || xhead.fmh_entries == 0) 952 break; 953 954 /* Copy all the records we got out to userspace. */ 955 if (copy_to_user(user_recs, recs, 956 xhead.fmh_entries * sizeof(struct fsmap))) { 957 error = -EFAULT; 958 goto out_free; 959 } 960 961 /* Remember the last record flags we copied to userspace. */ 962 last_rec = &recs[xhead.fmh_entries - 1]; 963 last_flags = last_rec->fmr_flags; 964 965 /* Set up the low key for the next iteration. */ 966 xfs_fsmap_to_internal(&xhead.fmh_keys[0], last_rec); 967 trace_xfs_getfsmap_low_key(ip->i_mount, &xhead.fmh_keys[0]); 968 } while (!done && head.fmh_entries < head.fmh_count); 969 970 /* 971 * If there are no more records in the query result set and we're not 972 * in counting mode, mark the last record returned with the LAST flag. 973 */ 974 if (done && head.fmh_count > 0 && head.fmh_entries > 0) { 975 struct fsmap __user *user_rec; 976 977 last_flags |= FMR_OF_LAST; 978 user_rec = &arg->fmh_recs[head.fmh_entries - 1]; 979 980 if (copy_to_user(&user_rec->fmr_flags, &last_flags, 981 sizeof(last_flags))) { 982 error = -EFAULT; 983 goto out_free; 984 } 985 } 986 987 /* copy back header */ 988 if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) { 989 error = -EFAULT; 990 goto out_free; 991 } 992 993 out_free: 994 kvfree(recs); 995 return error; 996 } 997 998 int 999 xfs_ioc_swapext( 1000 xfs_swapext_t *sxp) 1001 { 1002 xfs_inode_t *ip, *tip; 1003 struct fd f, tmp; 1004 int error = 0; 1005 1006 /* Pull information for the target fd */ 1007 f = fdget((int)sxp->sx_fdtarget); 1008 if (!f.file) { 1009 error = -EINVAL; 1010 goto out; 1011 } 1012 1013 if (!(f.file->f_mode & FMODE_WRITE) || 1014 !(f.file->f_mode & FMODE_READ) || 1015 (f.file->f_flags & O_APPEND)) { 1016 error = -EBADF; 1017 goto out_put_file; 1018 } 1019 1020 tmp = fdget((int)sxp->sx_fdtmp); 1021 if (!tmp.file) { 1022 error = -EINVAL; 1023 goto out_put_file; 1024 } 1025 1026 if (!(tmp.file->f_mode & FMODE_WRITE) || 1027 !(tmp.file->f_mode & FMODE_READ) || 1028 (tmp.file->f_flags & O_APPEND)) { 1029 error = -EBADF; 1030 goto out_put_tmp_file; 1031 } 1032 1033 if (IS_SWAPFILE(file_inode(f.file)) || 1034 IS_SWAPFILE(file_inode(tmp.file))) { 1035 error = -EINVAL; 1036 goto out_put_tmp_file; 1037 } 1038 1039 /* 1040 * We need to ensure that the fds passed in point to XFS inodes 1041 * before we cast and access them as XFS structures as we have no 1042 * control over what the user passes us here. 1043 */ 1044 if (f.file->f_op != &xfs_file_operations || 1045 tmp.file->f_op != &xfs_file_operations) { 1046 error = -EINVAL; 1047 goto out_put_tmp_file; 1048 } 1049 1050 ip = XFS_I(file_inode(f.file)); 1051 tip = XFS_I(file_inode(tmp.file)); 1052 1053 if (ip->i_mount != tip->i_mount) { 1054 error = -EINVAL; 1055 goto out_put_tmp_file; 1056 } 1057 1058 if (ip->i_ino == tip->i_ino) { 1059 error = -EINVAL; 1060 goto out_put_tmp_file; 1061 } 1062 1063 if (xfs_is_shutdown(ip->i_mount)) { 1064 error = -EIO; 1065 goto out_put_tmp_file; 1066 } 1067 1068 error = xfs_swap_extents(ip, tip, sxp); 1069 1070 out_put_tmp_file: 1071 fdput(tmp); 1072 out_put_file: 1073 fdput(f); 1074 out: 1075 return error; 1076 } 1077 1078 static int 1079 xfs_ioc_getlabel( 1080 struct xfs_mount *mp, 1081 char __user *user_label) 1082 { 1083 struct xfs_sb *sbp = &mp->m_sb; 1084 char label[XFSLABEL_MAX + 1]; 1085 1086 /* Paranoia */ 1087 BUILD_BUG_ON(sizeof(sbp->sb_fname) > FSLABEL_MAX); 1088 1089 /* 1 larger than sb_fname, so this ensures a trailing NUL char */ 1090 memset(label, 0, sizeof(label)); 1091 spin_lock(&mp->m_sb_lock); 1092 strncpy(label, sbp->sb_fname, XFSLABEL_MAX); 1093 spin_unlock(&mp->m_sb_lock); 1094 1095 if (copy_to_user(user_label, label, sizeof(label))) 1096 return -EFAULT; 1097 return 0; 1098 } 1099 1100 static int 1101 xfs_ioc_setlabel( 1102 struct file *filp, 1103 struct xfs_mount *mp, 1104 char __user *newlabel) 1105 { 1106 struct xfs_sb *sbp = &mp->m_sb; 1107 char label[XFSLABEL_MAX + 1]; 1108 size_t len; 1109 int error; 1110 1111 if (!capable(CAP_SYS_ADMIN)) 1112 return -EPERM; 1113 /* 1114 * The generic ioctl allows up to FSLABEL_MAX chars, but XFS is much 1115 * smaller, at 12 bytes. We copy one more to be sure we find the 1116 * (required) NULL character to test the incoming label length. 1117 * NB: The on disk label doesn't need to be null terminated. 1118 */ 1119 if (copy_from_user(label, newlabel, XFSLABEL_MAX + 1)) 1120 return -EFAULT; 1121 len = strnlen(label, XFSLABEL_MAX + 1); 1122 if (len > sizeof(sbp->sb_fname)) 1123 return -EINVAL; 1124 1125 error = mnt_want_write_file(filp); 1126 if (error) 1127 return error; 1128 1129 spin_lock(&mp->m_sb_lock); 1130 memset(sbp->sb_fname, 0, sizeof(sbp->sb_fname)); 1131 memcpy(sbp->sb_fname, label, len); 1132 spin_unlock(&mp->m_sb_lock); 1133 1134 /* 1135 * Now we do several things to satisfy userspace. 1136 * In addition to normal logging of the primary superblock, we also 1137 * immediately write these changes to sector zero for the primary, then 1138 * update all backup supers (as xfs_db does for a label change), then 1139 * invalidate the block device page cache. This is so that any prior 1140 * buffered reads from userspace (i.e. from blkid) are invalidated, 1141 * and userspace will see the newly-written label. 1142 */ 1143 error = xfs_sync_sb_buf(mp); 1144 if (error) 1145 goto out; 1146 /* 1147 * growfs also updates backup supers so lock against that. 1148 */ 1149 mutex_lock(&mp->m_growlock); 1150 error = xfs_update_secondary_sbs(mp); 1151 mutex_unlock(&mp->m_growlock); 1152 1153 invalidate_bdev(mp->m_ddev_targp->bt_bdev); 1154 1155 out: 1156 mnt_drop_write_file(filp); 1157 return error; 1158 } 1159 1160 static inline int 1161 xfs_fs_eofblocks_from_user( 1162 struct xfs_fs_eofblocks *src, 1163 struct xfs_icwalk *dst) 1164 { 1165 if (src->eof_version != XFS_EOFBLOCKS_VERSION) 1166 return -EINVAL; 1167 1168 if (src->eof_flags & ~XFS_EOF_FLAGS_VALID) 1169 return -EINVAL; 1170 1171 if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) || 1172 memchr_inv(src->pad64, 0, sizeof(src->pad64))) 1173 return -EINVAL; 1174 1175 dst->icw_flags = 0; 1176 if (src->eof_flags & XFS_EOF_FLAGS_SYNC) 1177 dst->icw_flags |= XFS_ICWALK_FLAG_SYNC; 1178 if (src->eof_flags & XFS_EOF_FLAGS_UID) 1179 dst->icw_flags |= XFS_ICWALK_FLAG_UID; 1180 if (src->eof_flags & XFS_EOF_FLAGS_GID) 1181 dst->icw_flags |= XFS_ICWALK_FLAG_GID; 1182 if (src->eof_flags & XFS_EOF_FLAGS_PRID) 1183 dst->icw_flags |= XFS_ICWALK_FLAG_PRID; 1184 if (src->eof_flags & XFS_EOF_FLAGS_MINFILESIZE) 1185 dst->icw_flags |= XFS_ICWALK_FLAG_MINFILESIZE; 1186 1187 dst->icw_prid = src->eof_prid; 1188 dst->icw_min_file_size = src->eof_min_file_size; 1189 1190 dst->icw_uid = INVALID_UID; 1191 if (src->eof_flags & XFS_EOF_FLAGS_UID) { 1192 dst->icw_uid = make_kuid(current_user_ns(), src->eof_uid); 1193 if (!uid_valid(dst->icw_uid)) 1194 return -EINVAL; 1195 } 1196 1197 dst->icw_gid = INVALID_GID; 1198 if (src->eof_flags & XFS_EOF_FLAGS_GID) { 1199 dst->icw_gid = make_kgid(current_user_ns(), src->eof_gid); 1200 if (!gid_valid(dst->icw_gid)) 1201 return -EINVAL; 1202 } 1203 return 0; 1204 } 1205 1206 static int 1207 xfs_ioctl_getset_resblocks( 1208 struct file *filp, 1209 unsigned int cmd, 1210 void __user *arg) 1211 { 1212 struct xfs_mount *mp = XFS_I(file_inode(filp))->i_mount; 1213 struct xfs_fsop_resblks fsop = { }; 1214 int error; 1215 1216 if (!capable(CAP_SYS_ADMIN)) 1217 return -EPERM; 1218 1219 if (cmd == XFS_IOC_SET_RESBLKS) { 1220 if (xfs_is_readonly(mp)) 1221 return -EROFS; 1222 1223 if (copy_from_user(&fsop, arg, sizeof(fsop))) 1224 return -EFAULT; 1225 1226 error = mnt_want_write_file(filp); 1227 if (error) 1228 return error; 1229 error = xfs_reserve_blocks(mp, fsop.resblks); 1230 mnt_drop_write_file(filp); 1231 if (error) 1232 return error; 1233 } 1234 1235 spin_lock(&mp->m_sb_lock); 1236 fsop.resblks = mp->m_resblks; 1237 fsop.resblks_avail = mp->m_resblks_avail; 1238 spin_unlock(&mp->m_sb_lock); 1239 1240 if (copy_to_user(arg, &fsop, sizeof(fsop))) 1241 return -EFAULT; 1242 return 0; 1243 } 1244 1245 static int 1246 xfs_ioctl_fs_counts( 1247 struct xfs_mount *mp, 1248 struct xfs_fsop_counts __user *uarg) 1249 { 1250 struct xfs_fsop_counts out = { 1251 .allocino = percpu_counter_read_positive(&mp->m_icount), 1252 .freeino = percpu_counter_read_positive(&mp->m_ifree), 1253 .freedata = percpu_counter_read_positive(&mp->m_fdblocks) - 1254 xfs_fdblocks_unavailable(mp), 1255 .freertx = percpu_counter_read_positive(&mp->m_frextents), 1256 }; 1257 1258 if (copy_to_user(uarg, &out, sizeof(out))) 1259 return -EFAULT; 1260 return 0; 1261 } 1262 1263 /* 1264 * These long-unused ioctls were removed from the official ioctl API in 5.17, 1265 * but retain these definitions so that we can log warnings about them. 1266 */ 1267 #define XFS_IOC_ALLOCSP _IOW ('X', 10, struct xfs_flock64) 1268 #define XFS_IOC_FREESP _IOW ('X', 11, struct xfs_flock64) 1269 #define XFS_IOC_ALLOCSP64 _IOW ('X', 36, struct xfs_flock64) 1270 #define XFS_IOC_FREESP64 _IOW ('X', 37, struct xfs_flock64) 1271 1272 /* 1273 * Note: some of the ioctl's return positive numbers as a 1274 * byte count indicating success, such as readlink_by_handle. 1275 * So we don't "sign flip" like most other routines. This means 1276 * true errors need to be returned as a negative value. 1277 */ 1278 long 1279 xfs_file_ioctl( 1280 struct file *filp, 1281 unsigned int cmd, 1282 unsigned long p) 1283 { 1284 struct inode *inode = file_inode(filp); 1285 struct xfs_inode *ip = XFS_I(inode); 1286 struct xfs_mount *mp = ip->i_mount; 1287 void __user *arg = (void __user *)p; 1288 int error; 1289 1290 trace_xfs_file_ioctl(ip); 1291 1292 switch (cmd) { 1293 case FITRIM: 1294 return xfs_ioc_trim(mp, arg); 1295 case FS_IOC_GETFSLABEL: 1296 return xfs_ioc_getlabel(mp, arg); 1297 case FS_IOC_SETFSLABEL: 1298 return xfs_ioc_setlabel(filp, mp, arg); 1299 case XFS_IOC_ALLOCSP: 1300 case XFS_IOC_FREESP: 1301 case XFS_IOC_ALLOCSP64: 1302 case XFS_IOC_FREESP64: 1303 xfs_warn_once(mp, 1304 "%s should use fallocate; XFS_IOC_{ALLOC,FREE}SP ioctl unsupported", 1305 current->comm); 1306 return -ENOTTY; 1307 case XFS_IOC_DIOINFO: { 1308 struct xfs_buftarg *target = xfs_inode_buftarg(ip); 1309 struct dioattr da; 1310 1311 da.d_mem = da.d_miniosz = target->bt_logical_sectorsize; 1312 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); 1313 1314 if (copy_to_user(arg, &da, sizeof(da))) 1315 return -EFAULT; 1316 return 0; 1317 } 1318 1319 case XFS_IOC_FSBULKSTAT_SINGLE: 1320 case XFS_IOC_FSBULKSTAT: 1321 case XFS_IOC_FSINUMBERS: 1322 return xfs_ioc_fsbulkstat(filp, cmd, arg); 1323 1324 case XFS_IOC_BULKSTAT: 1325 return xfs_ioc_bulkstat(filp, cmd, arg); 1326 case XFS_IOC_INUMBERS: 1327 return xfs_ioc_inumbers(mp, cmd, arg); 1328 1329 case XFS_IOC_FSGEOMETRY_V1: 1330 return xfs_ioc_fsgeometry(mp, arg, 3); 1331 case XFS_IOC_FSGEOMETRY_V4: 1332 return xfs_ioc_fsgeometry(mp, arg, 4); 1333 case XFS_IOC_FSGEOMETRY: 1334 return xfs_ioc_fsgeometry(mp, arg, 5); 1335 1336 case XFS_IOC_AG_GEOMETRY: 1337 return xfs_ioc_ag_geometry(mp, arg); 1338 1339 case XFS_IOC_GETVERSION: 1340 return put_user(inode->i_generation, (int __user *)arg); 1341 1342 case XFS_IOC_FSGETXATTRA: 1343 return xfs_ioc_fsgetxattra(ip, arg); 1344 case XFS_IOC_GETPARENTS: 1345 return xfs_ioc_getparents(filp, arg); 1346 case XFS_IOC_GETPARENTS_BY_HANDLE: 1347 return xfs_ioc_getparents_by_handle(filp, arg); 1348 case XFS_IOC_GETBMAP: 1349 case XFS_IOC_GETBMAPA: 1350 case XFS_IOC_GETBMAPX: 1351 return xfs_ioc_getbmap(filp, cmd, arg); 1352 1353 case FS_IOC_GETFSMAP: 1354 return xfs_ioc_getfsmap(ip, arg); 1355 1356 case XFS_IOC_SCRUBV_METADATA: 1357 return xfs_ioc_scrubv_metadata(filp, arg); 1358 case XFS_IOC_SCRUB_METADATA: 1359 return xfs_ioc_scrub_metadata(filp, arg); 1360 1361 case XFS_IOC_FD_TO_HANDLE: 1362 case XFS_IOC_PATH_TO_HANDLE: 1363 case XFS_IOC_PATH_TO_FSHANDLE: { 1364 xfs_fsop_handlereq_t hreq; 1365 1366 if (copy_from_user(&hreq, arg, sizeof(hreq))) 1367 return -EFAULT; 1368 return xfs_find_handle(cmd, &hreq); 1369 } 1370 case XFS_IOC_OPEN_BY_HANDLE: { 1371 xfs_fsop_handlereq_t hreq; 1372 1373 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) 1374 return -EFAULT; 1375 return xfs_open_by_handle(filp, &hreq); 1376 } 1377 1378 case XFS_IOC_READLINK_BY_HANDLE: { 1379 xfs_fsop_handlereq_t hreq; 1380 1381 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) 1382 return -EFAULT; 1383 return xfs_readlink_by_handle(filp, &hreq); 1384 } 1385 case XFS_IOC_ATTRLIST_BY_HANDLE: 1386 return xfs_attrlist_by_handle(filp, arg); 1387 1388 case XFS_IOC_ATTRMULTI_BY_HANDLE: 1389 return xfs_attrmulti_by_handle(filp, arg); 1390 1391 case XFS_IOC_SWAPEXT: { 1392 struct xfs_swapext sxp; 1393 1394 if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) 1395 return -EFAULT; 1396 error = mnt_want_write_file(filp); 1397 if (error) 1398 return error; 1399 error = xfs_ioc_swapext(&sxp); 1400 mnt_drop_write_file(filp); 1401 return error; 1402 } 1403 1404 case XFS_IOC_FSCOUNTS: 1405 return xfs_ioctl_fs_counts(mp, arg); 1406 1407 case XFS_IOC_SET_RESBLKS: 1408 case XFS_IOC_GET_RESBLKS: 1409 return xfs_ioctl_getset_resblocks(filp, cmd, arg); 1410 1411 case XFS_IOC_FSGROWFSDATA: { 1412 struct xfs_growfs_data in; 1413 1414 if (copy_from_user(&in, arg, sizeof(in))) 1415 return -EFAULT; 1416 1417 error = mnt_want_write_file(filp); 1418 if (error) 1419 return error; 1420 error = xfs_growfs_data(mp, &in); 1421 mnt_drop_write_file(filp); 1422 return error; 1423 } 1424 1425 case XFS_IOC_FSGROWFSLOG: { 1426 struct xfs_growfs_log in; 1427 1428 if (copy_from_user(&in, arg, sizeof(in))) 1429 return -EFAULT; 1430 1431 error = mnt_want_write_file(filp); 1432 if (error) 1433 return error; 1434 error = xfs_growfs_log(mp, &in); 1435 mnt_drop_write_file(filp); 1436 return error; 1437 } 1438 1439 case XFS_IOC_FSGROWFSRT: { 1440 xfs_growfs_rt_t in; 1441 1442 if (copy_from_user(&in, arg, sizeof(in))) 1443 return -EFAULT; 1444 1445 error = mnt_want_write_file(filp); 1446 if (error) 1447 return error; 1448 error = xfs_growfs_rt(mp, &in); 1449 mnt_drop_write_file(filp); 1450 return error; 1451 } 1452 1453 case XFS_IOC_GOINGDOWN: { 1454 uint32_t in; 1455 1456 if (!capable(CAP_SYS_ADMIN)) 1457 return -EPERM; 1458 1459 if (get_user(in, (uint32_t __user *)arg)) 1460 return -EFAULT; 1461 1462 return xfs_fs_goingdown(mp, in); 1463 } 1464 1465 case XFS_IOC_ERROR_INJECTION: { 1466 xfs_error_injection_t in; 1467 1468 if (!capable(CAP_SYS_ADMIN)) 1469 return -EPERM; 1470 1471 if (copy_from_user(&in, arg, sizeof(in))) 1472 return -EFAULT; 1473 1474 return xfs_errortag_add(mp, in.errtag); 1475 } 1476 1477 case XFS_IOC_ERROR_CLEARALL: 1478 if (!capable(CAP_SYS_ADMIN)) 1479 return -EPERM; 1480 1481 return xfs_errortag_clearall(mp); 1482 1483 case XFS_IOC_FREE_EOFBLOCKS: { 1484 struct xfs_fs_eofblocks eofb; 1485 struct xfs_icwalk icw; 1486 1487 if (!capable(CAP_SYS_ADMIN)) 1488 return -EPERM; 1489 1490 if (xfs_is_readonly(mp)) 1491 return -EROFS; 1492 1493 if (copy_from_user(&eofb, arg, sizeof(eofb))) 1494 return -EFAULT; 1495 1496 error = xfs_fs_eofblocks_from_user(&eofb, &icw); 1497 if (error) 1498 return error; 1499 1500 trace_xfs_ioc_free_eofblocks(mp, &icw, _RET_IP_); 1501 1502 sb_start_write(mp->m_super); 1503 error = xfs_blockgc_free_space(mp, &icw); 1504 sb_end_write(mp->m_super); 1505 return error; 1506 } 1507 1508 case XFS_IOC_EXCHANGE_RANGE: 1509 return xfs_ioc_exchange_range(filp, arg); 1510 1511 default: 1512 return -ENOTTY; 1513 } 1514 } 1515