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 */ 47static 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_zeroed_page(GFP_NOFS); 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 */ 119int 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 */ 131int nilfs_fileattr_set(struct mnt_idmap *idmap, 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_set_ctime_current(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 */ 163static 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 */ 187static 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); 217out: 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 */ 241static int 242nilfs_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 */ 267out: 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 */ 287static ssize_t 288nilfs_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 */ 321static 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 */ 354static ssize_t 355nilfs_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 */ 388static 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 */ 421static ssize_t 422nilfs_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 */ 448static ssize_t 449nilfs_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 */ 497static 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 */ 540static 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 */ 596static 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 */ 680static 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 */ 715static 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 */ 744static 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 790int 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 */ 843static 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; 875 876 /* 877 * argv[4] points to segment numbers this ioctl cleans. We 878 * use kmalloc() for its buffer because the memory used for the 879 * segment numbers is small enough. 880 */ 881 kbufs[4] = memdup_array_user((void __user *)(unsigned long)argv[4].v_base, 882 nsegs, sizeof(__u64)); 883 if (IS_ERR(kbufs[4])) { 884 ret = PTR_ERR(kbufs[4]); 885 goto out; 886 } 887 nilfs = inode->i_sb->s_fs_info; 888 889 for (n = 0; n < 4; n++) { 890 ret = -EINVAL; 891 if (argv[n].v_size != argsz[n]) 892 goto out_free; 893 894 if (argv[n].v_nmembs > nsegs * nilfs->ns_blocks_per_segment) 895 goto out_free; 896 897 if (argv[n].v_nmembs >= UINT_MAX / argv[n].v_size) 898 goto out_free; 899 900 len = argv[n].v_size * argv[n].v_nmembs; 901 base = (void __user *)(unsigned long)argv[n].v_base; 902 if (len == 0) { 903 kbufs[n] = NULL; 904 continue; 905 } 906 907 kbufs[n] = vmalloc(len); 908 if (!kbufs[n]) { 909 ret = -ENOMEM; 910 goto out_free; 911 } 912 if (copy_from_user(kbufs[n], base, len)) { 913 ret = -EFAULT; 914 vfree(kbufs[n]); 915 goto out_free; 916 } 917 } 918 919 /* 920 * nilfs_ioctl_move_blocks() will call nilfs_iget_for_gc(), 921 * which will operates an inode list without blocking. 922 * To protect the list from concurrent operations, 923 * nilfs_ioctl_move_blocks should be atomic operation. 924 */ 925 if (test_and_set_bit(THE_NILFS_GC_RUNNING, &nilfs->ns_flags)) { 926 ret = -EBUSY; 927 goto out_free; 928 } 929 930 ret = nilfs_ioctl_move_blocks(inode->i_sb, &argv[0], kbufs[0]); 931 if (ret < 0) { 932 nilfs_err(inode->i_sb, 933 "error %d preparing GC: cannot read source blocks", 934 ret); 935 } else { 936 if (nilfs_sb_need_update(nilfs)) 937 set_nilfs_discontinued(nilfs); 938 ret = nilfs_clean_segments(inode->i_sb, argv, kbufs); 939 } 940 941 nilfs_remove_all_gcinodes(nilfs); 942 clear_nilfs_gc_running(nilfs); 943 944out_free: 945 while (--n >= 0) 946 vfree(kbufs[n]); 947 kfree(kbufs[4]); 948out: 949 mnt_drop_write_file(filp); 950 return ret; 951} 952 953/** 954 * nilfs_ioctl_sync - make a checkpoint 955 * @inode: inode object 956 * @filp: file object 957 * @cmd: ioctl's request code 958 * @argp: pointer on argument from userspace 959 * 960 * Description: nilfs_ioctl_sync() function constructs a logical segment 961 * for checkpointing. This function guarantees that all modified data 962 * and metadata are written out to the device when it successfully 963 * returned. 964 * 965 * Return Value: On success, 0 is retured. On errors, one of the following 966 * negative error code is returned. 967 * 968 * %-EROFS - Read only filesystem. 969 * 970 * %-EIO - I/O error 971 * 972 * %-ENOSPC - No space left on device (only in a panic state). 973 * 974 * %-ERESTARTSYS - Interrupted. 975 * 976 * %-ENOMEM - Insufficient memory available. 977 * 978 * %-EFAULT - Failure during execution of requested operation. 979 */ 980static int nilfs_ioctl_sync(struct inode *inode, struct file *filp, 981 unsigned int cmd, void __user *argp) 982{ 983 __u64 cno; 984 int ret; 985 struct the_nilfs *nilfs; 986 987 ret = nilfs_construct_segment(inode->i_sb); 988 if (ret < 0) 989 return ret; 990 991 nilfs = inode->i_sb->s_fs_info; 992 ret = nilfs_flush_device(nilfs); 993 if (ret < 0) 994 return ret; 995 996 if (argp != NULL) { 997 down_read(&nilfs->ns_segctor_sem); 998 cno = nilfs->ns_cno - 1; 999 up_read(&nilfs->ns_segctor_sem); 1000 if (copy_to_user(argp, &cno, sizeof(cno))) 1001 return -EFAULT; 1002 } 1003 return 0; 1004} 1005 1006/** 1007 * nilfs_ioctl_resize - resize NILFS2 volume 1008 * @inode: inode object 1009 * @filp: file object 1010 * @argp: pointer on argument from userspace 1011 * 1012 * Return Value: On success, 0 is returned or error code, otherwise. 1013 */ 1014static int nilfs_ioctl_resize(struct inode *inode, struct file *filp, 1015 void __user *argp) 1016{ 1017 __u64 newsize; 1018 int ret = -EPERM; 1019 1020 if (!capable(CAP_SYS_ADMIN)) 1021 goto out; 1022 1023 ret = mnt_want_write_file(filp); 1024 if (ret) 1025 goto out; 1026 1027 ret = -EFAULT; 1028 if (copy_from_user(&newsize, argp, sizeof(newsize))) 1029 goto out_drop_write; 1030 1031 ret = nilfs_resize_fs(inode->i_sb, newsize); 1032 1033out_drop_write: 1034 mnt_drop_write_file(filp); 1035out: 1036 return ret; 1037} 1038 1039/** 1040 * nilfs_ioctl_trim_fs() - trim ioctl handle function 1041 * @inode: inode object 1042 * @argp: pointer on argument from userspace 1043 * 1044 * Description: nilfs_ioctl_trim_fs is the FITRIM ioctl handle function. It 1045 * checks the arguments from userspace and calls nilfs_sufile_trim_fs, which 1046 * performs the actual trim operation. 1047 * 1048 * Return Value: On success, 0 is returned or negative error code, otherwise. 1049 */ 1050static int nilfs_ioctl_trim_fs(struct inode *inode, void __user *argp) 1051{ 1052 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; 1053 struct fstrim_range range; 1054 int ret; 1055 1056 if (!capable(CAP_SYS_ADMIN)) 1057 return -EPERM; 1058 1059 if (!bdev_max_discard_sectors(nilfs->ns_bdev)) 1060 return -EOPNOTSUPP; 1061 1062 if (copy_from_user(&range, argp, sizeof(range))) 1063 return -EFAULT; 1064 1065 range.minlen = max_t(u64, range.minlen, 1066 bdev_discard_granularity(nilfs->ns_bdev)); 1067 1068 down_read(&nilfs->ns_segctor_sem); 1069 ret = nilfs_sufile_trim_fs(nilfs->ns_sufile, &range); 1070 up_read(&nilfs->ns_segctor_sem); 1071 1072 if (ret < 0) 1073 return ret; 1074 1075 if (copy_to_user(argp, &range, sizeof(range))) 1076 return -EFAULT; 1077 1078 return 0; 1079} 1080 1081/** 1082 * nilfs_ioctl_set_alloc_range - limit range of segments to be allocated 1083 * @inode: inode object 1084 * @argp: pointer on argument from userspace 1085 * 1086 * Description: nilfs_ioctl_set_alloc_range() function defines lower limit 1087 * of segments in bytes and upper limit of segments in bytes. 1088 * The NILFS_IOCTL_SET_ALLOC_RANGE is used by nilfs_resize utility. 1089 * 1090 * Return Value: On success, 0 is returned or error code, otherwise. 1091 */ 1092static int nilfs_ioctl_set_alloc_range(struct inode *inode, void __user *argp) 1093{ 1094 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; 1095 __u64 range[2]; 1096 __u64 minseg, maxseg; 1097 unsigned long segbytes; 1098 int ret = -EPERM; 1099 1100 if (!capable(CAP_SYS_ADMIN)) 1101 goto out; 1102 1103 ret = -EFAULT; 1104 if (copy_from_user(range, argp, sizeof(__u64[2]))) 1105 goto out; 1106 1107 ret = -ERANGE; 1108 if (range[1] > bdev_nr_bytes(inode->i_sb->s_bdev)) 1109 goto out; 1110 1111 segbytes = nilfs->ns_blocks_per_segment * nilfs->ns_blocksize; 1112 1113 minseg = range[0] + segbytes - 1; 1114 minseg = div64_ul(minseg, segbytes); 1115 1116 if (range[1] < 4096) 1117 goto out; 1118 1119 maxseg = NILFS_SB2_OFFSET_BYTES(range[1]); 1120 if (maxseg < segbytes) 1121 goto out; 1122 1123 maxseg = div64_ul(maxseg, segbytes); 1124 maxseg--; 1125 1126 ret = nilfs_sufile_set_alloc_range(nilfs->ns_sufile, minseg, maxseg); 1127out: 1128 return ret; 1129} 1130 1131/** 1132 * nilfs_ioctl_get_info - wrapping function of get metadata info 1133 * @inode: inode object 1134 * @filp: file object 1135 * @cmd: ioctl's request code 1136 * @argp: pointer on argument from userspace 1137 * @membsz: size of an item in bytes 1138 * @dofunc: concrete function of getting metadata info 1139 * 1140 * Description: nilfs_ioctl_get_info() gets metadata info by means of 1141 * calling dofunc() function. 1142 * 1143 * Return Value: On success, 0 is returned and requested metadata info 1144 * is copied into userspace. On error, one of the following 1145 * negative error codes is returned. 1146 * 1147 * %-EINVAL - Invalid arguments from userspace. 1148 * 1149 * %-ENOMEM - Insufficient amount of memory available. 1150 * 1151 * %-EFAULT - Failure during execution of requested operation. 1152 */ 1153static int nilfs_ioctl_get_info(struct inode *inode, struct file *filp, 1154 unsigned int cmd, void __user *argp, 1155 size_t membsz, 1156 ssize_t (*dofunc)(struct the_nilfs *, 1157 __u64 *, int, 1158 void *, size_t, size_t)) 1159 1160{ 1161 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; 1162 struct nilfs_argv argv; 1163 int ret; 1164 1165 if (copy_from_user(&argv, argp, sizeof(argv))) 1166 return -EFAULT; 1167 1168 if (argv.v_size < membsz) 1169 return -EINVAL; 1170 1171 ret = nilfs_ioctl_wrap_copy(nilfs, &argv, _IOC_DIR(cmd), dofunc); 1172 if (ret < 0) 1173 return ret; 1174 1175 if (copy_to_user(argp, &argv, sizeof(argv))) 1176 ret = -EFAULT; 1177 return ret; 1178} 1179 1180/** 1181 * nilfs_ioctl_set_suinfo - set segment usage info 1182 * @inode: inode object 1183 * @filp: file object 1184 * @cmd: ioctl's request code 1185 * @argp: pointer on argument from userspace 1186 * 1187 * Description: Expects an array of nilfs_suinfo_update structures 1188 * encapsulated in nilfs_argv and updates the segment usage info 1189 * according to the flags in nilfs_suinfo_update. 1190 * 1191 * Return Value: On success, 0 is returned. On error, one of the 1192 * following negative error codes is returned. 1193 * 1194 * %-EPERM - Not enough permissions 1195 * 1196 * %-EFAULT - Error copying input data 1197 * 1198 * %-EIO - I/O error. 1199 * 1200 * %-ENOMEM - Insufficient amount of memory available. 1201 * 1202 * %-EINVAL - Invalid values in input (segment number, flags or nblocks) 1203 */ 1204static int nilfs_ioctl_set_suinfo(struct inode *inode, struct file *filp, 1205 unsigned int cmd, void __user *argp) 1206{ 1207 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; 1208 struct nilfs_transaction_info ti; 1209 struct nilfs_argv argv; 1210 size_t len; 1211 void __user *base; 1212 void *kbuf; 1213 int ret; 1214 1215 if (!capable(CAP_SYS_ADMIN)) 1216 return -EPERM; 1217 1218 ret = mnt_want_write_file(filp); 1219 if (ret) 1220 return ret; 1221 1222 ret = -EFAULT; 1223 if (copy_from_user(&argv, argp, sizeof(argv))) 1224 goto out; 1225 1226 ret = -EINVAL; 1227 if (argv.v_size < sizeof(struct nilfs_suinfo_update)) 1228 goto out; 1229 1230 if (argv.v_nmembs > nilfs->ns_nsegments) 1231 goto out; 1232 1233 if (argv.v_nmembs >= UINT_MAX / argv.v_size) 1234 goto out; 1235 1236 len = argv.v_size * argv.v_nmembs; 1237 if (!len) { 1238 ret = 0; 1239 goto out; 1240 } 1241 1242 base = (void __user *)(unsigned long)argv.v_base; 1243 kbuf = vmalloc(len); 1244 if (!kbuf) { 1245 ret = -ENOMEM; 1246 goto out; 1247 } 1248 1249 if (copy_from_user(kbuf, base, len)) { 1250 ret = -EFAULT; 1251 goto out_free; 1252 } 1253 1254 nilfs_transaction_begin(inode->i_sb, &ti, 0); 1255 ret = nilfs_sufile_set_suinfo(nilfs->ns_sufile, kbuf, argv.v_size, 1256 argv.v_nmembs); 1257 if (unlikely(ret < 0)) 1258 nilfs_transaction_abort(inode->i_sb); 1259 else 1260 nilfs_transaction_commit(inode->i_sb); /* never fails */ 1261 1262out_free: 1263 vfree(kbuf); 1264out: 1265 mnt_drop_write_file(filp); 1266 return ret; 1267} 1268 1269long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 1270{ 1271 struct inode *inode = file_inode(filp); 1272 void __user *argp = (void __user *)arg; 1273 1274 switch (cmd) { 1275 case FS_IOC_GETVERSION: 1276 return nilfs_ioctl_getversion(inode, argp); 1277 case NILFS_IOCTL_CHANGE_CPMODE: 1278 return nilfs_ioctl_change_cpmode(inode, filp, cmd, argp); 1279 case NILFS_IOCTL_DELETE_CHECKPOINT: 1280 return nilfs_ioctl_delete_checkpoint(inode, filp, cmd, argp); 1281 case NILFS_IOCTL_GET_CPINFO: 1282 return nilfs_ioctl_get_info(inode, filp, cmd, argp, 1283 sizeof(struct nilfs_cpinfo), 1284 nilfs_ioctl_do_get_cpinfo); 1285 case NILFS_IOCTL_GET_CPSTAT: 1286 return nilfs_ioctl_get_cpstat(inode, filp, cmd, argp); 1287 case NILFS_IOCTL_GET_SUINFO: 1288 return nilfs_ioctl_get_info(inode, filp, cmd, argp, 1289 sizeof(struct nilfs_suinfo), 1290 nilfs_ioctl_do_get_suinfo); 1291 case NILFS_IOCTL_SET_SUINFO: 1292 return nilfs_ioctl_set_suinfo(inode, filp, cmd, argp); 1293 case NILFS_IOCTL_GET_SUSTAT: 1294 return nilfs_ioctl_get_sustat(inode, filp, cmd, argp); 1295 case NILFS_IOCTL_GET_VINFO: 1296 return nilfs_ioctl_get_info(inode, filp, cmd, argp, 1297 sizeof(struct nilfs_vinfo), 1298 nilfs_ioctl_do_get_vinfo); 1299 case NILFS_IOCTL_GET_BDESCS: 1300 return nilfs_ioctl_get_bdescs(inode, filp, cmd, argp); 1301 case NILFS_IOCTL_CLEAN_SEGMENTS: 1302 return nilfs_ioctl_clean_segments(inode, filp, cmd, argp); 1303 case NILFS_IOCTL_SYNC: 1304 return nilfs_ioctl_sync(inode, filp, cmd, argp); 1305 case NILFS_IOCTL_RESIZE: 1306 return nilfs_ioctl_resize(inode, filp, argp); 1307 case NILFS_IOCTL_SET_ALLOC_RANGE: 1308 return nilfs_ioctl_set_alloc_range(inode, argp); 1309 case FITRIM: 1310 return nilfs_ioctl_trim_fs(inode, argp); 1311 default: 1312 return -ENOTTY; 1313 } 1314} 1315 1316#ifdef CONFIG_COMPAT 1317long nilfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 1318{ 1319 switch (cmd) { 1320 case FS_IOC32_GETVERSION: 1321 cmd = FS_IOC_GETVERSION; 1322 break; 1323 case NILFS_IOCTL_CHANGE_CPMODE: 1324 case NILFS_IOCTL_DELETE_CHECKPOINT: 1325 case NILFS_IOCTL_GET_CPINFO: 1326 case NILFS_IOCTL_GET_CPSTAT: 1327 case NILFS_IOCTL_GET_SUINFO: 1328 case NILFS_IOCTL_SET_SUINFO: 1329 case NILFS_IOCTL_GET_SUSTAT: 1330 case NILFS_IOCTL_GET_VINFO: 1331 case NILFS_IOCTL_GET_BDESCS: 1332 case NILFS_IOCTL_CLEAN_SEGMENTS: 1333 case NILFS_IOCTL_SYNC: 1334 case NILFS_IOCTL_RESIZE: 1335 case NILFS_IOCTL_SET_ALLOC_RANGE: 1336 case FITRIM: 1337 break; 1338 default: 1339 return -ENOIOCTLCMD; 1340 } 1341 return nilfs_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); 1342} 1343#endif 1344