1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * NILFS ioctl operations. 4 * 5 * Copyright (C) 2007, 2008 Nippon Telegraph and Telephone Corporation. 6 * 7 * Written by Koji Sato. 8 */ 9 10 #include <linux/fs.h> 11 #include <linux/wait.h> 12 #include <linux/slab.h> 13 #include <linux/capability.h> /* capable() */ 14 #include <linux/uaccess.h> /* copy_from_user(), copy_to_user() */ 15 #include <linux/vmalloc.h> 16 #include <linux/compat.h> /* compat_ptr() */ 17 #include <linux/mount.h> /* mnt_want_write_file(), mnt_drop_write_file() */ 18 #include <linux/buffer_head.h> 19 #include <linux/fileattr.h> 20 #include "nilfs.h" 21 #include "segment.h" 22 #include "bmap.h" 23 #include "cpfile.h" 24 #include "sufile.h" 25 #include "dat.h" 26 27 /** 28 * nilfs_ioctl_wrap_copy - wrapping function of get/set metadata info 29 * @nilfs: nilfs object 30 * @argv: vector of arguments from userspace 31 * @dir: set of direction flags 32 * @dofunc: concrete function of get/set metadata info 33 * 34 * Description: nilfs_ioctl_wrap_copy() gets/sets metadata info by means of 35 * calling dofunc() function on the basis of @argv argument. 36 * 37 * Return Value: On success, 0 is returned and requested metadata info 38 * is copied into userspace. On error, one of the following 39 * negative error codes is returned. 40 * 41 * %-EINVAL - Invalid arguments from userspace. 42 * 43 * %-ENOMEM - Insufficient amount of memory available. 44 * 45 * %-EFAULT - Failure during execution of requested operation. 46 */ 47 static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs, 48 struct nilfs_argv *argv, int dir, 49 ssize_t (*dofunc)(struct the_nilfs *, 50 __u64 *, int, 51 void *, size_t, size_t)) 52 { 53 void *buf; 54 void __user *base = (void __user *)(unsigned long)argv->v_base; 55 size_t maxmembs, total, n; 56 ssize_t nr; 57 int ret, i; 58 __u64 pos, ppos; 59 60 if (argv->v_nmembs == 0) 61 return 0; 62 63 if (argv->v_size > PAGE_SIZE) 64 return -EINVAL; 65 66 /* 67 * Reject pairs of a start item position (argv->v_index) and a 68 * total count (argv->v_nmembs) which leads position 'pos' to 69 * overflow by the increment at the end of the loop. 70 */ 71 if (argv->v_index > ~(__u64)0 - argv->v_nmembs) 72 return -EINVAL; 73 74 buf = (void *)__get_free_pages(GFP_NOFS, 0); 75 if (unlikely(!buf)) 76 return -ENOMEM; 77 maxmembs = PAGE_SIZE / argv->v_size; 78 79 ret = 0; 80 total = 0; 81 pos = argv->v_index; 82 for (i = 0; i < argv->v_nmembs; i += n) { 83 n = (argv->v_nmembs - i < maxmembs) ? 84 argv->v_nmembs - i : maxmembs; 85 if ((dir & _IOC_WRITE) && 86 copy_from_user(buf, base + argv->v_size * i, 87 argv->v_size * n)) { 88 ret = -EFAULT; 89 break; 90 } 91 ppos = pos; 92 nr = dofunc(nilfs, &pos, argv->v_flags, buf, argv->v_size, 93 n); 94 if (nr < 0) { 95 ret = nr; 96 break; 97 } 98 if ((dir & _IOC_READ) && 99 copy_to_user(base + argv->v_size * i, buf, 100 argv->v_size * nr)) { 101 ret = -EFAULT; 102 break; 103 } 104 total += nr; 105 if ((size_t)nr < n) 106 break; 107 if (pos == ppos) 108 pos += n; 109 } 110 argv->v_nmembs = total; 111 112 free_pages((unsigned long)buf, 0); 113 return ret; 114 } 115 116 /** 117 * nilfs_fileattr_get - ioctl to support lsattr 118 */ 119 int nilfs_fileattr_get(struct dentry *dentry, struct fileattr *fa) 120 { 121 struct inode *inode = d_inode(dentry); 122 123 fileattr_fill_flags(fa, NILFS_I(inode)->i_flags & FS_FL_USER_VISIBLE); 124 125 return 0; 126 } 127 128 /** 129 * nilfs_fileattr_set - ioctl to support chattr 130 */ 131 int nilfs_fileattr_set(struct user_namespace *mnt_userns, 132 struct dentry *dentry, struct fileattr *fa) 133 { 134 struct inode *inode = d_inode(dentry); 135 struct nilfs_transaction_info ti; 136 unsigned int flags, oldflags; 137 int ret; 138 139 if (fileattr_has_fsx(fa)) 140 return -EOPNOTSUPP; 141 142 flags = nilfs_mask_flags(inode->i_mode, fa->flags); 143 144 ret = nilfs_transaction_begin(inode->i_sb, &ti, 0); 145 if (ret) 146 return ret; 147 148 oldflags = NILFS_I(inode)->i_flags & ~FS_FL_USER_MODIFIABLE; 149 NILFS_I(inode)->i_flags = oldflags | (flags & FS_FL_USER_MODIFIABLE); 150 151 nilfs_set_inode_flags(inode); 152 inode->i_ctime = current_time(inode); 153 if (IS_SYNC(inode)) 154 nilfs_set_transaction_flag(NILFS_TI_SYNC); 155 156 nilfs_mark_inode_dirty(inode); 157 return nilfs_transaction_commit(inode->i_sb); 158 } 159 160 /** 161 * nilfs_ioctl_getversion - get info about a file's version (generation number) 162 */ 163 static int nilfs_ioctl_getversion(struct inode *inode, void __user *argp) 164 { 165 return put_user(inode->i_generation, (int __user *)argp); 166 } 167 168 /** 169 * nilfs_ioctl_change_cpmode - change checkpoint mode (checkpoint/snapshot) 170 * @inode: inode object 171 * @filp: file object 172 * @cmd: ioctl's request code 173 * @argp: pointer on argument from userspace 174 * 175 * Description: nilfs_ioctl_change_cpmode() function changes mode of 176 * given checkpoint between checkpoint and snapshot state. This ioctl 177 * is used in chcp and mkcp utilities. 178 * 179 * Return Value: On success, 0 is returned and mode of a checkpoint is 180 * changed. On error, one of the following negative error codes 181 * is returned. 182 * 183 * %-EPERM - Operation not permitted. 184 * 185 * %-EFAULT - Failure during checkpoint mode changing. 186 */ 187 static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp, 188 unsigned int cmd, void __user *argp) 189 { 190 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; 191 struct nilfs_transaction_info ti; 192 struct nilfs_cpmode cpmode; 193 int ret; 194 195 if (!capable(CAP_SYS_ADMIN)) 196 return -EPERM; 197 198 ret = mnt_want_write_file(filp); 199 if (ret) 200 return ret; 201 202 ret = -EFAULT; 203 if (copy_from_user(&cpmode, argp, sizeof(cpmode))) 204 goto out; 205 206 mutex_lock(&nilfs->ns_snapshot_mount_mutex); 207 208 nilfs_transaction_begin(inode->i_sb, &ti, 0); 209 ret = nilfs_cpfile_change_cpmode( 210 nilfs->ns_cpfile, cpmode.cm_cno, cpmode.cm_mode); 211 if (unlikely(ret < 0)) 212 nilfs_transaction_abort(inode->i_sb); 213 else 214 nilfs_transaction_commit(inode->i_sb); /* never fails */ 215 216 mutex_unlock(&nilfs->ns_snapshot_mount_mutex); 217 out: 218 mnt_drop_write_file(filp); 219 return ret; 220 } 221 222 /** 223 * nilfs_ioctl_delete_checkpoint - remove checkpoint 224 * @inode: inode object 225 * @filp: file object 226 * @cmd: ioctl's request code 227 * @argp: pointer on argument from userspace 228 * 229 * Description: nilfs_ioctl_delete_checkpoint() function removes 230 * checkpoint from NILFS2 file system. This ioctl is used in rmcp 231 * utility. 232 * 233 * Return Value: On success, 0 is returned and a checkpoint is 234 * removed. On error, one of the following negative error codes 235 * is returned. 236 * 237 * %-EPERM - Operation not permitted. 238 * 239 * %-EFAULT - Failure during checkpoint removing. 240 */ 241 static int 242 nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp, 243 unsigned int cmd, void __user *argp) 244 { 245 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; 246 struct nilfs_transaction_info ti; 247 __u64 cno; 248 int ret; 249 250 if (!capable(CAP_SYS_ADMIN)) 251 return -EPERM; 252 253 ret = mnt_want_write_file(filp); 254 if (ret) 255 return ret; 256 257 ret = -EFAULT; 258 if (copy_from_user(&cno, argp, sizeof(cno))) 259 goto out; 260 261 nilfs_transaction_begin(inode->i_sb, &ti, 0); 262 ret = nilfs_cpfile_delete_checkpoint(nilfs->ns_cpfile, cno); 263 if (unlikely(ret < 0)) 264 nilfs_transaction_abort(inode->i_sb); 265 else 266 nilfs_transaction_commit(inode->i_sb); /* never fails */ 267 out: 268 mnt_drop_write_file(filp); 269 return ret; 270 } 271 272 /** 273 * nilfs_ioctl_do_get_cpinfo - callback method getting info about checkpoints 274 * @nilfs: nilfs object 275 * @posp: pointer on array of checkpoint's numbers 276 * @flags: checkpoint mode (checkpoint or snapshot) 277 * @buf: buffer for storing checkponts' info 278 * @size: size in bytes of one checkpoint info item in array 279 * @nmembs: number of checkpoints in array (numbers and infos) 280 * 281 * Description: nilfs_ioctl_do_get_cpinfo() function returns info about 282 * requested checkpoints. The NILFS_IOCTL_GET_CPINFO ioctl is used in 283 * lscp utility and by nilfs_cleanerd daemon. 284 * 285 * Return value: count of nilfs_cpinfo structures in output buffer. 286 */ 287 static ssize_t 288 nilfs_ioctl_do_get_cpinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, 289 void *buf, size_t size, size_t nmembs) 290 { 291 int ret; 292 293 down_read(&nilfs->ns_segctor_sem); 294 ret = nilfs_cpfile_get_cpinfo(nilfs->ns_cpfile, posp, flags, buf, 295 size, nmembs); 296 up_read(&nilfs->ns_segctor_sem); 297 return ret; 298 } 299 300 /** 301 * nilfs_ioctl_get_cpstat - get checkpoints statistics 302 * @inode: inode object 303 * @filp: file object 304 * @cmd: ioctl's request code 305 * @argp: pointer on argument from userspace 306 * 307 * Description: nilfs_ioctl_get_cpstat() returns information about checkpoints. 308 * The NILFS_IOCTL_GET_CPSTAT ioctl is used by lscp, rmcp utilities 309 * and by nilfs_cleanerd daemon. 310 * 311 * Return Value: On success, 0 is returned, and checkpoints information is 312 * copied into userspace pointer @argp. On error, one of the following 313 * negative error codes is returned. 314 * 315 * %-EIO - I/O error. 316 * 317 * %-ENOMEM - Insufficient amount of memory available. 318 * 319 * %-EFAULT - Failure during getting checkpoints statistics. 320 */ 321 static int nilfs_ioctl_get_cpstat(struct inode *inode, struct file *filp, 322 unsigned int cmd, void __user *argp) 323 { 324 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; 325 struct nilfs_cpstat cpstat; 326 int ret; 327 328 down_read(&nilfs->ns_segctor_sem); 329 ret = nilfs_cpfile_get_stat(nilfs->ns_cpfile, &cpstat); 330 up_read(&nilfs->ns_segctor_sem); 331 if (ret < 0) 332 return ret; 333 334 if (copy_to_user(argp, &cpstat, sizeof(cpstat))) 335 ret = -EFAULT; 336 return ret; 337 } 338 339 /** 340 * nilfs_ioctl_do_get_suinfo - callback method getting segment usage info 341 * @nilfs: nilfs object 342 * @posp: pointer on array of segment numbers 343 * @flags: *not used* 344 * @buf: buffer for storing suinfo array 345 * @size: size in bytes of one suinfo item in array 346 * @nmembs: count of segment numbers and suinfos in array 347 * 348 * Description: nilfs_ioctl_do_get_suinfo() function returns segment usage 349 * info about requested segments. The NILFS_IOCTL_GET_SUINFO ioctl is used 350 * in lssu, nilfs_resize utilities and by nilfs_cleanerd daemon. 351 * 352 * Return value: count of nilfs_suinfo structures in output buffer. 353 */ 354 static ssize_t 355 nilfs_ioctl_do_get_suinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, 356 void *buf, size_t size, size_t nmembs) 357 { 358 int ret; 359 360 down_read(&nilfs->ns_segctor_sem); 361 ret = nilfs_sufile_get_suinfo(nilfs->ns_sufile, *posp, buf, size, 362 nmembs); 363 up_read(&nilfs->ns_segctor_sem); 364 return ret; 365 } 366 367 /** 368 * nilfs_ioctl_get_sustat - get segment usage statistics 369 * @inode: inode object 370 * @filp: file object 371 * @cmd: ioctl's request code 372 * @argp: pointer on argument from userspace 373 * 374 * Description: nilfs_ioctl_get_sustat() returns segment usage statistics. 375 * The NILFS_IOCTL_GET_SUSTAT ioctl is used in lssu, nilfs_resize utilities 376 * and by nilfs_cleanerd daemon. 377 * 378 * Return Value: On success, 0 is returned, and segment usage information is 379 * copied into userspace pointer @argp. On error, one of the following 380 * negative error codes is returned. 381 * 382 * %-EIO - I/O error. 383 * 384 * %-ENOMEM - Insufficient amount of memory available. 385 * 386 * %-EFAULT - Failure during getting segment usage statistics. 387 */ 388 static int nilfs_ioctl_get_sustat(struct inode *inode, struct file *filp, 389 unsigned int cmd, void __user *argp) 390 { 391 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; 392 struct nilfs_sustat sustat; 393 int ret; 394 395 down_read(&nilfs->ns_segctor_sem); 396 ret = nilfs_sufile_get_stat(nilfs->ns_sufile, &sustat); 397 up_read(&nilfs->ns_segctor_sem); 398 if (ret < 0) 399 return ret; 400 401 if (copy_to_user(argp, &sustat, sizeof(sustat))) 402 ret = -EFAULT; 403 return ret; 404 } 405 406 /** 407 * nilfs_ioctl_do_get_vinfo - callback method getting virtual blocks info 408 * @nilfs: nilfs object 409 * @posp: *not used* 410 * @flags: *not used* 411 * @buf: buffer for storing array of nilfs_vinfo structures 412 * @size: size in bytes of one vinfo item in array 413 * @nmembs: count of vinfos in array 414 * 415 * Description: nilfs_ioctl_do_get_vinfo() function returns information 416 * on virtual block addresses. The NILFS_IOCTL_GET_VINFO ioctl is used 417 * by nilfs_cleanerd daemon. 418 * 419 * Return value: count of nilfs_vinfo structures in output buffer. 420 */ 421 static ssize_t 422 nilfs_ioctl_do_get_vinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, 423 void *buf, size_t size, size_t nmembs) 424 { 425 int ret; 426 427 down_read(&nilfs->ns_segctor_sem); 428 ret = nilfs_dat_get_vinfo(nilfs->ns_dat, buf, size, nmembs); 429 up_read(&nilfs->ns_segctor_sem); 430 return ret; 431 } 432 433 /** 434 * nilfs_ioctl_do_get_bdescs - callback method getting disk block descriptors 435 * @nilfs: nilfs object 436 * @posp: *not used* 437 * @flags: *not used* 438 * @buf: buffer for storing array of nilfs_bdesc structures 439 * @size: size in bytes of one bdesc item in array 440 * @nmembs: count of bdescs in array 441 * 442 * Description: nilfs_ioctl_do_get_bdescs() function returns information 443 * about descriptors of disk block numbers. The NILFS_IOCTL_GET_BDESCS ioctl 444 * is used by nilfs_cleanerd daemon. 445 * 446 * Return value: count of nilfs_bdescs structures in output buffer. 447 */ 448 static ssize_t 449 nilfs_ioctl_do_get_bdescs(struct the_nilfs *nilfs, __u64 *posp, int flags, 450 void *buf, size_t size, size_t nmembs) 451 { 452 struct nilfs_bmap *bmap = NILFS_I(nilfs->ns_dat)->i_bmap; 453 struct nilfs_bdesc *bdescs = buf; 454 int ret, i; 455 456 down_read(&nilfs->ns_segctor_sem); 457 for (i = 0; i < nmembs; i++) { 458 ret = nilfs_bmap_lookup_at_level(bmap, 459 bdescs[i].bd_offset, 460 bdescs[i].bd_level + 1, 461 &bdescs[i].bd_blocknr); 462 if (ret < 0) { 463 if (ret != -ENOENT) { 464 up_read(&nilfs->ns_segctor_sem); 465 return ret; 466 } 467 bdescs[i].bd_blocknr = 0; 468 } 469 } 470 up_read(&nilfs->ns_segctor_sem); 471 return nmembs; 472 } 473 474 /** 475 * nilfs_ioctl_get_bdescs - get disk block descriptors 476 * @inode: inode object 477 * @filp: file object 478 * @cmd: ioctl's request code 479 * @argp: pointer on argument from userspace 480 * 481 * Description: nilfs_ioctl_do_get_bdescs() function returns information 482 * about descriptors of disk block numbers. The NILFS_IOCTL_GET_BDESCS ioctl 483 * is used by nilfs_cleanerd daemon. 484 * 485 * Return Value: On success, 0 is returned, and disk block descriptors are 486 * copied into userspace pointer @argp. On error, one of the following 487 * negative error codes is returned. 488 * 489 * %-EINVAL - Invalid arguments from userspace. 490 * 491 * %-EIO - I/O error. 492 * 493 * %-ENOMEM - Insufficient amount of memory available. 494 * 495 * %-EFAULT - Failure during getting disk block descriptors. 496 */ 497 static int nilfs_ioctl_get_bdescs(struct inode *inode, struct file *filp, 498 unsigned int cmd, void __user *argp) 499 { 500 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; 501 struct nilfs_argv argv; 502 int ret; 503 504 if (copy_from_user(&argv, argp, sizeof(argv))) 505 return -EFAULT; 506 507 if (argv.v_size != sizeof(struct nilfs_bdesc)) 508 return -EINVAL; 509 510 ret = nilfs_ioctl_wrap_copy(nilfs, &argv, _IOC_DIR(cmd), 511 nilfs_ioctl_do_get_bdescs); 512 if (ret < 0) 513 return ret; 514 515 if (copy_to_user(argp, &argv, sizeof(argv))) 516 ret = -EFAULT; 517 return ret; 518 } 519 520 /** 521 * nilfs_ioctl_move_inode_block - prepare data/node block for moving by GC 522 * @inode: inode object 523 * @vdesc: descriptor of virtual block number 524 * @buffers: list of moving buffers 525 * 526 * Description: nilfs_ioctl_move_inode_block() function registers data/node 527 * buffer in the GC pagecache and submit read request. 528 * 529 * Return Value: On success, 0 is returned. On error, one of the following 530 * negative error codes is returned. 531 * 532 * %-EIO - I/O error. 533 * 534 * %-ENOMEM - Insufficient amount of memory available. 535 * 536 * %-ENOENT - Requested block doesn't exist. 537 * 538 * %-EEXIST - Blocks conflict is detected. 539 */ 540 static int nilfs_ioctl_move_inode_block(struct inode *inode, 541 struct nilfs_vdesc *vdesc, 542 struct list_head *buffers) 543 { 544 struct buffer_head *bh; 545 int ret; 546 547 if (vdesc->vd_flags == 0) 548 ret = nilfs_gccache_submit_read_data( 549 inode, vdesc->vd_offset, vdesc->vd_blocknr, 550 vdesc->vd_vblocknr, &bh); 551 else 552 ret = nilfs_gccache_submit_read_node( 553 inode, vdesc->vd_blocknr, vdesc->vd_vblocknr, &bh); 554 555 if (unlikely(ret < 0)) { 556 if (ret == -ENOENT) 557 nilfs_crit(inode->i_sb, 558 "%s: invalid virtual block address (%s): ino=%llu, cno=%llu, offset=%llu, blocknr=%llu, vblocknr=%llu", 559 __func__, vdesc->vd_flags ? "node" : "data", 560 (unsigned long long)vdesc->vd_ino, 561 (unsigned long long)vdesc->vd_cno, 562 (unsigned long long)vdesc->vd_offset, 563 (unsigned long long)vdesc->vd_blocknr, 564 (unsigned long long)vdesc->vd_vblocknr); 565 return ret; 566 } 567 if (unlikely(!list_empty(&bh->b_assoc_buffers))) { 568 nilfs_crit(inode->i_sb, 569 "%s: conflicting %s buffer: ino=%llu, cno=%llu, offset=%llu, blocknr=%llu, vblocknr=%llu", 570 __func__, vdesc->vd_flags ? "node" : "data", 571 (unsigned long long)vdesc->vd_ino, 572 (unsigned long long)vdesc->vd_cno, 573 (unsigned long long)vdesc->vd_offset, 574 (unsigned long long)vdesc->vd_blocknr, 575 (unsigned long long)vdesc->vd_vblocknr); 576 brelse(bh); 577 return -EEXIST; 578 } 579 list_add_tail(&bh->b_assoc_buffers, buffers); 580 return 0; 581 } 582 583 /** 584 * nilfs_ioctl_move_blocks - move valid inode's blocks during garbage collection 585 * @sb: superblock object 586 * @argv: vector of arguments from userspace 587 * @buf: array of nilfs_vdesc structures 588 * 589 * Description: nilfs_ioctl_move_blocks() function reads valid data/node 590 * blocks that garbage collector specified with the array of nilfs_vdesc 591 * structures and stores them into page caches of GC inodes. 592 * 593 * Return Value: Number of processed nilfs_vdesc structures or 594 * error code, otherwise. 595 */ 596 static int nilfs_ioctl_move_blocks(struct super_block *sb, 597 struct nilfs_argv *argv, void *buf) 598 { 599 size_t nmembs = argv->v_nmembs; 600 struct the_nilfs *nilfs = sb->s_fs_info; 601 struct inode *inode; 602 struct nilfs_vdesc *vdesc; 603 struct buffer_head *bh, *n; 604 LIST_HEAD(buffers); 605 ino_t ino; 606 __u64 cno; 607 int i, ret; 608 609 for (i = 0, vdesc = buf; i < nmembs; ) { 610 ino = vdesc->vd_ino; 611 cno = vdesc->vd_cno; 612 inode = nilfs_iget_for_gc(sb, ino, cno); 613 if (IS_ERR(inode)) { 614 ret = PTR_ERR(inode); 615 goto failed; 616 } 617 if (list_empty(&NILFS_I(inode)->i_dirty)) { 618 /* 619 * Add the inode to GC inode list. Garbage Collection 620 * is serialized and no two processes manipulate the 621 * list simultaneously. 622 */ 623 igrab(inode); 624 list_add(&NILFS_I(inode)->i_dirty, 625 &nilfs->ns_gc_inodes); 626 } 627 628 do { 629 ret = nilfs_ioctl_move_inode_block(inode, vdesc, 630 &buffers); 631 if (unlikely(ret < 0)) { 632 iput(inode); 633 goto failed; 634 } 635 vdesc++; 636 } while (++i < nmembs && 637 vdesc->vd_ino == ino && vdesc->vd_cno == cno); 638 639 iput(inode); /* The inode still remains in GC inode list */ 640 } 641 642 list_for_each_entry_safe(bh, n, &buffers, b_assoc_buffers) { 643 ret = nilfs_gccache_wait_and_mark_dirty(bh); 644 if (unlikely(ret < 0)) { 645 WARN_ON(ret == -EEXIST); 646 goto failed; 647 } 648 list_del_init(&bh->b_assoc_buffers); 649 brelse(bh); 650 } 651 return nmembs; 652 653 failed: 654 list_for_each_entry_safe(bh, n, &buffers, b_assoc_buffers) { 655 list_del_init(&bh->b_assoc_buffers); 656 brelse(bh); 657 } 658 return ret; 659 } 660 661 /** 662 * nilfs_ioctl_delete_checkpoints - delete checkpoints 663 * @nilfs: nilfs object 664 * @argv: vector of arguments from userspace 665 * @buf: array of periods of checkpoints numbers 666 * 667 * Description: nilfs_ioctl_delete_checkpoints() function deletes checkpoints 668 * in the period from p_start to p_end, excluding p_end itself. The checkpoints 669 * which have been already deleted are ignored. 670 * 671 * Return Value: Number of processed nilfs_period structures or 672 * error code, otherwise. 673 * 674 * %-EIO - I/O error. 675 * 676 * %-ENOMEM - Insufficient amount of memory available. 677 * 678 * %-EINVAL - invalid checkpoints. 679 */ 680 static int nilfs_ioctl_delete_checkpoints(struct the_nilfs *nilfs, 681 struct nilfs_argv *argv, void *buf) 682 { 683 size_t nmembs = argv->v_nmembs; 684 struct inode *cpfile = nilfs->ns_cpfile; 685 struct nilfs_period *periods = buf; 686 int ret, i; 687 688 for (i = 0; i < nmembs; i++) { 689 ret = nilfs_cpfile_delete_checkpoints( 690 cpfile, periods[i].p_start, periods[i].p_end); 691 if (ret < 0) 692 return ret; 693 } 694 return nmembs; 695 } 696 697 /** 698 * nilfs_ioctl_free_vblocknrs - free virtual block numbers 699 * @nilfs: nilfs object 700 * @argv: vector of arguments from userspace 701 * @buf: array of virtual block numbers 702 * 703 * Description: nilfs_ioctl_free_vblocknrs() function frees 704 * the virtual block numbers specified by @buf and @argv->v_nmembs. 705 * 706 * Return Value: Number of processed virtual block numbers or 707 * error code, otherwise. 708 * 709 * %-EIO - I/O error. 710 * 711 * %-ENOMEM - Insufficient amount of memory available. 712 * 713 * %-ENOENT - The virtual block number have not been allocated. 714 */ 715 static int nilfs_ioctl_free_vblocknrs(struct the_nilfs *nilfs, 716 struct nilfs_argv *argv, void *buf) 717 { 718 size_t nmembs = argv->v_nmembs; 719 int ret; 720 721 ret = nilfs_dat_freev(nilfs->ns_dat, buf, nmembs); 722 723 return (ret < 0) ? ret : nmembs; 724 } 725 726 /** 727 * nilfs_ioctl_mark_blocks_dirty - mark blocks dirty 728 * @nilfs: nilfs object 729 * @argv: vector of arguments from userspace 730 * @buf: array of block descriptors 731 * 732 * Description: nilfs_ioctl_mark_blocks_dirty() function marks 733 * metadata file or data blocks as dirty. 734 * 735 * Return Value: Number of processed block descriptors or 736 * error code, otherwise. 737 * 738 * %-ENOMEM - Insufficient memory available. 739 * 740 * %-EIO - I/O error 741 * 742 * %-ENOENT - the specified block does not exist (hole block) 743 */ 744 static int nilfs_ioctl_mark_blocks_dirty(struct the_nilfs *nilfs, 745 struct nilfs_argv *argv, void *buf) 746 { 747 size_t nmembs = argv->v_nmembs; 748 struct nilfs_bmap *bmap = NILFS_I(nilfs->ns_dat)->i_bmap; 749 struct nilfs_bdesc *bdescs = buf; 750 struct buffer_head *bh; 751 int ret, i; 752 753 for (i = 0; i < nmembs; i++) { 754 /* XXX: use macro or inline func to check liveness */ 755 ret = nilfs_bmap_lookup_at_level(bmap, 756 bdescs[i].bd_offset, 757 bdescs[i].bd_level + 1, 758 &bdescs[i].bd_blocknr); 759 if (ret < 0) { 760 if (ret != -ENOENT) 761 return ret; 762 bdescs[i].bd_blocknr = 0; 763 } 764 if (bdescs[i].bd_blocknr != bdescs[i].bd_oblocknr) 765 /* skip dead block */ 766 continue; 767 if (bdescs[i].bd_level == 0) { 768 ret = nilfs_mdt_get_block(nilfs->ns_dat, 769 bdescs[i].bd_offset, 770 false, NULL, &bh); 771 if (unlikely(ret)) { 772 WARN_ON(ret == -ENOENT); 773 return ret; 774 } 775 mark_buffer_dirty(bh); 776 nilfs_mdt_mark_dirty(nilfs->ns_dat); 777 put_bh(bh); 778 } else { 779 ret = nilfs_bmap_mark(bmap, bdescs[i].bd_offset, 780 bdescs[i].bd_level); 781 if (ret < 0) { 782 WARN_ON(ret == -ENOENT); 783 return ret; 784 } 785 } 786 } 787 return nmembs; 788 } 789 790 int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *nilfs, 791 struct nilfs_argv *argv, void **kbufs) 792 { 793 const char *msg; 794 int ret; 795 796 ret = nilfs_ioctl_delete_checkpoints(nilfs, &argv[1], kbufs[1]); 797 if (ret < 0) { 798 /* 799 * can safely abort because checkpoints can be removed 800 * independently. 801 */ 802 msg = "cannot delete checkpoints"; 803 goto failed; 804 } 805 ret = nilfs_ioctl_free_vblocknrs(nilfs, &argv[2], kbufs[2]); 806 if (ret < 0) { 807 /* 808 * can safely abort because DAT file is updated atomically 809 * using a copy-on-write technique. 810 */ 811 msg = "cannot delete virtual blocks from DAT file"; 812 goto failed; 813 } 814 ret = nilfs_ioctl_mark_blocks_dirty(nilfs, &argv[3], kbufs[3]); 815 if (ret < 0) { 816 /* 817 * can safely abort because the operation is nondestructive. 818 */ 819 msg = "cannot mark copying blocks dirty"; 820 goto failed; 821 } 822 return 0; 823 824 failed: 825 nilfs_err(nilfs->ns_sb, "error %d preparing GC: %s", ret, msg); 826 return ret; 827 } 828 829 /** 830 * nilfs_ioctl_clean_segments - clean segments 831 * @inode: inode object 832 * @filp: file object 833 * @cmd: ioctl's request code 834 * @argp: pointer on argument from userspace 835 * 836 * Description: nilfs_ioctl_clean_segments() function makes garbage 837 * collection operation in the environment of requested parameters 838 * from userspace. The NILFS_IOCTL_CLEAN_SEGMENTS ioctl is used by 839 * nilfs_cleanerd daemon. 840 * 841 * Return Value: On success, 0 is returned or error code, otherwise. 842 */ 843 static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp, 844 unsigned int cmd, void __user *argp) 845 { 846 struct nilfs_argv argv[5]; 847 static const size_t argsz[5] = { 848 sizeof(struct nilfs_vdesc), 849 sizeof(struct nilfs_period), 850 sizeof(__u64), 851 sizeof(struct nilfs_bdesc), 852 sizeof(__u64), 853 }; 854 void __user *base; 855 void *kbufs[5]; 856 struct the_nilfs *nilfs; 857 size_t len, nsegs; 858 int n, ret; 859 860 if (!capable(CAP_SYS_ADMIN)) 861 return -EPERM; 862 863 ret = mnt_want_write_file(filp); 864 if (ret) 865 return ret; 866 867 ret = -EFAULT; 868 if (copy_from_user(argv, argp, sizeof(argv))) 869 goto out; 870 871 ret = -EINVAL; 872 nsegs = argv[4].v_nmembs; 873 if (argv[4].v_size != argsz[4]) 874 goto out; 875 if (nsegs > UINT_MAX / sizeof(__u64)) 876 goto out; 877 878 /* 879 * argv[4] points to segment numbers this ioctl cleans. We 880 * use kmalloc() for its buffer because memory used for the 881 * segment numbers is enough small. 882 */ 883 kbufs[4] = memdup_user((void __user *)(unsigned long)argv[4].v_base, 884 nsegs * sizeof(__u64)); 885 if (IS_ERR(kbufs[4])) { 886 ret = PTR_ERR(kbufs[4]); 887 goto out; 888 } 889 nilfs = inode->i_sb->s_fs_info; 890 891 for (n = 0; n < 4; n++) { 892 ret = -EINVAL; 893 if (argv[n].v_size != argsz[n]) 894 goto out_free; 895 896 if (argv[n].v_nmembs > nsegs * nilfs->ns_blocks_per_segment) 897 goto out_free; 898 899 if (argv[n].v_nmembs >= UINT_MAX / argv[n].v_size) 900 goto out_free; 901 902 len = argv[n].v_size * argv[n].v_nmembs; 903 base = (void __user *)(unsigned long)argv[n].v_base; 904 if (len == 0) { 905 kbufs[n] = NULL; 906 continue; 907 } 908 909 kbufs[n] = vmalloc(len); 910 if (!kbufs[n]) { 911 ret = -ENOMEM; 912 goto out_free; 913 } 914 if (copy_from_user(kbufs[n], base, len)) { 915 ret = -EFAULT; 916 vfree(kbufs[n]); 917 goto out_free; 918 } 919 } 920 921 /* 922 * nilfs_ioctl_move_blocks() will call nilfs_iget_for_gc(), 923 * which will operates an inode list without blocking. 924 * To protect the list from concurrent operations, 925 * nilfs_ioctl_move_blocks should be atomic operation. 926 */ 927 if (test_and_set_bit(THE_NILFS_GC_RUNNING, &nilfs->ns_flags)) { 928 ret = -EBUSY; 929 goto out_free; 930 } 931 932 ret = nilfs_ioctl_move_blocks(inode->i_sb, &argv[0], kbufs[0]); 933 if (ret < 0) { 934 nilfs_err(inode->i_sb, 935 "error %d preparing GC: cannot read source blocks", 936 ret); 937 } else { 938 if (nilfs_sb_need_update(nilfs)) 939 set_nilfs_discontinued(nilfs); 940 ret = nilfs_clean_segments(inode->i_sb, argv, kbufs); 941 } 942 943 nilfs_remove_all_gcinodes(nilfs); 944 clear_nilfs_gc_running(nilfs); 945 946 out_free: 947 while (--n >= 0) 948 vfree(kbufs[n]); 949 kfree(kbufs[4]); 950 out: 951 mnt_drop_write_file(filp); 952 return ret; 953 } 954 955 /** 956 * nilfs_ioctl_sync - make a checkpoint 957 * @inode: inode object 958 * @filp: file object 959 * @cmd: ioctl's request code 960 * @argp: pointer on argument from userspace 961 * 962 * Description: nilfs_ioctl_sync() function constructs a logical segment 963 * for checkpointing. This function guarantees that all modified data 964 * and metadata are written out to the device when it successfully 965 * returned. 966 * 967 * Return Value: On success, 0 is retured. On errors, one of the following 968 * negative error code is returned. 969 * 970 * %-EROFS - Read only filesystem. 971 * 972 * %-EIO - I/O error 973 * 974 * %-ENOSPC - No space left on device (only in a panic state). 975 * 976 * %-ERESTARTSYS - Interrupted. 977 * 978 * %-ENOMEM - Insufficient memory available. 979 * 980 * %-EFAULT - Failure during execution of requested operation. 981 */ 982 static int nilfs_ioctl_sync(struct inode *inode, struct file *filp, 983 unsigned int cmd, void __user *argp) 984 { 985 __u64 cno; 986 int ret; 987 struct the_nilfs *nilfs; 988 989 ret = nilfs_construct_segment(inode->i_sb); 990 if (ret < 0) 991 return ret; 992 993 nilfs = inode->i_sb->s_fs_info; 994 ret = nilfs_flush_device(nilfs); 995 if (ret < 0) 996 return ret; 997 998 if (argp != NULL) { 999 down_read(&nilfs->ns_segctor_sem); 1000 cno = nilfs->ns_cno - 1; 1001 up_read(&nilfs->ns_segctor_sem); 1002 if (copy_to_user(argp, &cno, sizeof(cno))) 1003 return -EFAULT; 1004 } 1005 return 0; 1006 } 1007 1008 /** 1009 * nilfs_ioctl_resize - resize NILFS2 volume 1010 * @inode: inode object 1011 * @filp: file object 1012 * @argp: pointer on argument from userspace 1013 * 1014 * Return Value: On success, 0 is returned or error code, otherwise. 1015 */ 1016 static int nilfs_ioctl_resize(struct inode *inode, struct file *filp, 1017 void __user *argp) 1018 { 1019 __u64 newsize; 1020 int ret = -EPERM; 1021 1022 if (!capable(CAP_SYS_ADMIN)) 1023 goto out; 1024 1025 ret = mnt_want_write_file(filp); 1026 if (ret) 1027 goto out; 1028 1029 ret = -EFAULT; 1030 if (copy_from_user(&newsize, argp, sizeof(newsize))) 1031 goto out_drop_write; 1032 1033 ret = nilfs_resize_fs(inode->i_sb, newsize); 1034 1035 out_drop_write: 1036 mnt_drop_write_file(filp); 1037 out: 1038 return ret; 1039 } 1040 1041 /** 1042 * nilfs_ioctl_trim_fs() - trim ioctl handle function 1043 * @inode: inode object 1044 * @argp: pointer on argument from userspace 1045 * 1046 * Description: nilfs_ioctl_trim_fs is the FITRIM ioctl handle function. It 1047 * checks the arguments from userspace and calls nilfs_sufile_trim_fs, which 1048 * performs the actual trim operation. 1049 * 1050 * Return Value: On success, 0 is returned or negative error code, otherwise. 1051 */ 1052 static int nilfs_ioctl_trim_fs(struct inode *inode, void __user *argp) 1053 { 1054 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; 1055 struct request_queue *q = bdev_get_queue(nilfs->ns_bdev); 1056 struct fstrim_range range; 1057 int ret; 1058 1059 if (!capable(CAP_SYS_ADMIN)) 1060 return -EPERM; 1061 1062 if (!blk_queue_discard(q)) 1063 return -EOPNOTSUPP; 1064 1065 if (copy_from_user(&range, argp, sizeof(range))) 1066 return -EFAULT; 1067 1068 range.minlen = max_t(u64, range.minlen, q->limits.discard_granularity); 1069 1070 down_read(&nilfs->ns_segctor_sem); 1071 ret = nilfs_sufile_trim_fs(nilfs->ns_sufile, &range); 1072 up_read(&nilfs->ns_segctor_sem); 1073 1074 if (ret < 0) 1075 return ret; 1076 1077 if (copy_to_user(argp, &range, sizeof(range))) 1078 return -EFAULT; 1079 1080 return 0; 1081 } 1082 1083 /** 1084 * nilfs_ioctl_set_alloc_range - limit range of segments to be allocated 1085 * @inode: inode object 1086 * @argp: pointer on argument from userspace 1087 * 1088 * Description: nilfs_ioctl_set_alloc_range() function defines lower limit 1089 * of segments in bytes and upper limit of segments in bytes. 1090 * The NILFS_IOCTL_SET_ALLOC_RANGE is used by nilfs_resize utility. 1091 * 1092 * Return Value: On success, 0 is returned or error code, otherwise. 1093 */ 1094 static int nilfs_ioctl_set_alloc_range(struct inode *inode, void __user *argp) 1095 { 1096 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; 1097 __u64 range[2]; 1098 __u64 minseg, maxseg; 1099 unsigned long segbytes; 1100 int ret = -EPERM; 1101 1102 if (!capable(CAP_SYS_ADMIN)) 1103 goto out; 1104 1105 ret = -EFAULT; 1106 if (copy_from_user(range, argp, sizeof(__u64[2]))) 1107 goto out; 1108 1109 ret = -ERANGE; 1110 if (range[1] > bdev_nr_bytes(inode->i_sb->s_bdev)) 1111 goto out; 1112 1113 segbytes = nilfs->ns_blocks_per_segment * nilfs->ns_blocksize; 1114 1115 minseg = range[0] + segbytes - 1; 1116 do_div(minseg, segbytes); 1117 maxseg = NILFS_SB2_OFFSET_BYTES(range[1]); 1118 do_div(maxseg, segbytes); 1119 maxseg--; 1120 1121 ret = nilfs_sufile_set_alloc_range(nilfs->ns_sufile, minseg, maxseg); 1122 out: 1123 return ret; 1124 } 1125 1126 /** 1127 * nilfs_ioctl_get_info - wrapping function of get metadata info 1128 * @inode: inode object 1129 * @filp: file object 1130 * @cmd: ioctl's request code 1131 * @argp: pointer on argument from userspace 1132 * @membsz: size of an item in bytes 1133 * @dofunc: concrete function of getting metadata info 1134 * 1135 * Description: nilfs_ioctl_get_info() gets metadata info by means of 1136 * calling dofunc() function. 1137 * 1138 * Return Value: On success, 0 is returned and requested metadata info 1139 * is copied into userspace. On error, one of the following 1140 * negative error codes is returned. 1141 * 1142 * %-EINVAL - Invalid arguments from userspace. 1143 * 1144 * %-ENOMEM - Insufficient amount of memory available. 1145 * 1146 * %-EFAULT - Failure during execution of requested operation. 1147 */ 1148 static int nilfs_ioctl_get_info(struct inode *inode, struct file *filp, 1149 unsigned int cmd, void __user *argp, 1150 size_t membsz, 1151 ssize_t (*dofunc)(struct the_nilfs *, 1152 __u64 *, int, 1153 void *, size_t, size_t)) 1154 1155 { 1156 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; 1157 struct nilfs_argv argv; 1158 int ret; 1159 1160 if (copy_from_user(&argv, argp, sizeof(argv))) 1161 return -EFAULT; 1162 1163 if (argv.v_size < membsz) 1164 return -EINVAL; 1165 1166 ret = nilfs_ioctl_wrap_copy(nilfs, &argv, _IOC_DIR(cmd), dofunc); 1167 if (ret < 0) 1168 return ret; 1169 1170 if (copy_to_user(argp, &argv, sizeof(argv))) 1171 ret = -EFAULT; 1172 return ret; 1173 } 1174 1175 /** 1176 * nilfs_ioctl_set_suinfo - set segment usage info 1177 * @inode: inode object 1178 * @filp: file object 1179 * @cmd: ioctl's request code 1180 * @argp: pointer on argument from userspace 1181 * 1182 * Description: Expects an array of nilfs_suinfo_update structures 1183 * encapsulated in nilfs_argv and updates the segment usage info 1184 * according to the flags in nilfs_suinfo_update. 1185 * 1186 * Return Value: On success, 0 is returned. On error, one of the 1187 * following negative error codes is returned. 1188 * 1189 * %-EPERM - Not enough permissions 1190 * 1191 * %-EFAULT - Error copying input data 1192 * 1193 * %-EIO - I/O error. 1194 * 1195 * %-ENOMEM - Insufficient amount of memory available. 1196 * 1197 * %-EINVAL - Invalid values in input (segment number, flags or nblocks) 1198 */ 1199 static int nilfs_ioctl_set_suinfo(struct inode *inode, struct file *filp, 1200 unsigned int cmd, void __user *argp) 1201 { 1202 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; 1203 struct nilfs_transaction_info ti; 1204 struct nilfs_argv argv; 1205 size_t len; 1206 void __user *base; 1207 void *kbuf; 1208 int ret; 1209 1210 if (!capable(CAP_SYS_ADMIN)) 1211 return -EPERM; 1212 1213 ret = mnt_want_write_file(filp); 1214 if (ret) 1215 return ret; 1216 1217 ret = -EFAULT; 1218 if (copy_from_user(&argv, argp, sizeof(argv))) 1219 goto out; 1220 1221 ret = -EINVAL; 1222 if (argv.v_size < sizeof(struct nilfs_suinfo_update)) 1223 goto out; 1224 1225 if (argv.v_nmembs > nilfs->ns_nsegments) 1226 goto out; 1227 1228 if (argv.v_nmembs >= UINT_MAX / argv.v_size) 1229 goto out; 1230 1231 len = argv.v_size * argv.v_nmembs; 1232 if (!len) { 1233 ret = 0; 1234 goto out; 1235 } 1236 1237 base = (void __user *)(unsigned long)argv.v_base; 1238 kbuf = vmalloc(len); 1239 if (!kbuf) { 1240 ret = -ENOMEM; 1241 goto out; 1242 } 1243 1244 if (copy_from_user(kbuf, base, len)) { 1245 ret = -EFAULT; 1246 goto out_free; 1247 } 1248 1249 nilfs_transaction_begin(inode->i_sb, &ti, 0); 1250 ret = nilfs_sufile_set_suinfo(nilfs->ns_sufile, kbuf, argv.v_size, 1251 argv.v_nmembs); 1252 if (unlikely(ret < 0)) 1253 nilfs_transaction_abort(inode->i_sb); 1254 else 1255 nilfs_transaction_commit(inode->i_sb); /* never fails */ 1256 1257 out_free: 1258 vfree(kbuf); 1259 out: 1260 mnt_drop_write_file(filp); 1261 return ret; 1262 } 1263 1264 long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 1265 { 1266 struct inode *inode = file_inode(filp); 1267 void __user *argp = (void __user *)arg; 1268 1269 switch (cmd) { 1270 case FS_IOC_GETVERSION: 1271 return nilfs_ioctl_getversion(inode, argp); 1272 case NILFS_IOCTL_CHANGE_CPMODE: 1273 return nilfs_ioctl_change_cpmode(inode, filp, cmd, argp); 1274 case NILFS_IOCTL_DELETE_CHECKPOINT: 1275 return nilfs_ioctl_delete_checkpoint(inode, filp, cmd, argp); 1276 case NILFS_IOCTL_GET_CPINFO: 1277 return nilfs_ioctl_get_info(inode, filp, cmd, argp, 1278 sizeof(struct nilfs_cpinfo), 1279 nilfs_ioctl_do_get_cpinfo); 1280 case NILFS_IOCTL_GET_CPSTAT: 1281 return nilfs_ioctl_get_cpstat(inode, filp, cmd, argp); 1282 case NILFS_IOCTL_GET_SUINFO: 1283 return nilfs_ioctl_get_info(inode, filp, cmd, argp, 1284 sizeof(struct nilfs_suinfo), 1285 nilfs_ioctl_do_get_suinfo); 1286 case NILFS_IOCTL_SET_SUINFO: 1287 return nilfs_ioctl_set_suinfo(inode, filp, cmd, argp); 1288 case NILFS_IOCTL_GET_SUSTAT: 1289 return nilfs_ioctl_get_sustat(inode, filp, cmd, argp); 1290 case NILFS_IOCTL_GET_VINFO: 1291 return nilfs_ioctl_get_info(inode, filp, cmd, argp, 1292 sizeof(struct nilfs_vinfo), 1293 nilfs_ioctl_do_get_vinfo); 1294 case NILFS_IOCTL_GET_BDESCS: 1295 return nilfs_ioctl_get_bdescs(inode, filp, cmd, argp); 1296 case NILFS_IOCTL_CLEAN_SEGMENTS: 1297 return nilfs_ioctl_clean_segments(inode, filp, cmd, argp); 1298 case NILFS_IOCTL_SYNC: 1299 return nilfs_ioctl_sync(inode, filp, cmd, argp); 1300 case NILFS_IOCTL_RESIZE: 1301 return nilfs_ioctl_resize(inode, filp, argp); 1302 case NILFS_IOCTL_SET_ALLOC_RANGE: 1303 return nilfs_ioctl_set_alloc_range(inode, argp); 1304 case FITRIM: 1305 return nilfs_ioctl_trim_fs(inode, argp); 1306 default: 1307 return -ENOTTY; 1308 } 1309 } 1310 1311 #ifdef CONFIG_COMPAT 1312 long nilfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 1313 { 1314 switch (cmd) { 1315 case FS_IOC32_GETVERSION: 1316 cmd = FS_IOC_GETVERSION; 1317 break; 1318 case NILFS_IOCTL_CHANGE_CPMODE: 1319 case NILFS_IOCTL_DELETE_CHECKPOINT: 1320 case NILFS_IOCTL_GET_CPINFO: 1321 case NILFS_IOCTL_GET_CPSTAT: 1322 case NILFS_IOCTL_GET_SUINFO: 1323 case NILFS_IOCTL_SET_SUINFO: 1324 case NILFS_IOCTL_GET_SUSTAT: 1325 case NILFS_IOCTL_GET_VINFO: 1326 case NILFS_IOCTL_GET_BDESCS: 1327 case NILFS_IOCTL_CLEAN_SEGMENTS: 1328 case NILFS_IOCTL_SYNC: 1329 case NILFS_IOCTL_RESIZE: 1330 case NILFS_IOCTL_SET_ALLOC_RANGE: 1331 case FITRIM: 1332 break; 1333 default: 1334 return -ENOIOCTLCMD; 1335 } 1336 return nilfs_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); 1337 } 1338 #endif 1339