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   1 /*
   2  * ioctl.c - NILFS ioctl operations.
   3  *
   4  * Copyright (C) 2007, 2008 Nippon Telegraph and Telephone Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  * Written by Koji Sato <koji@osrg.net>.
  21  */
  22
  23 #include <linux/fs.h>
  24 #include <linux/wait.h>
  25 #include <linux/smp_lock.h>     /* lock_kernel(), unlock_kernel() */
  26 #include <linux/capability.h>   /* capable() */
  27 #include <linux/uaccess.h>      /* copy_from_user(), copy_to_user() */
  28 #include <linux/nilfs2_fs.h>
  29 #include "nilfs.h"
  30 #include "segment.h"
  31 #include "bmap.h"
  32 #include "cpfile.h"
  33 #include "sufile.h"
  34 #include "dat.h"
  35
  36
  37 static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
  38                                  struct nilfs_argv *argv, int dir,
  39                                  ssize_t (*dofunc)(struct the_nilfs *,
  40                                                    __u64 *, int,
  41                                                    void *, size_t, size_t))
  42 {
  43         void *buf;
  44         void __user *base = (void __user *)(unsigned long)argv->v_base;
  45         size_t maxmembs, total, n;
  46         ssize_t nr;
  47         int ret, i;
  48         __u64 pos, ppos;
  49
  50         if (argv->v_nmembs == 0)
  51                 return 0;
  52
  53         if (argv->v_size > PAGE_SIZE)
  54                 return -EINVAL;
  55
  56         buf = (void *)__get_free_pages(GFP_NOFS, 0);
  57         if (unlikely(!buf))
  58                 return -ENOMEM;
  59         maxmembs = PAGE_SIZE / argv->v_size;
  60
  61         ret = 0;
  62         total = 0;
  63         pos = argv->v_index;
  64         for (i = 0; i < argv->v_nmembs; i += n) {
  65                 n = (argv->v_nmembs - i < maxmembs) ?
  66                         argv->v_nmembs - i : maxmembs;
  67                 if ((dir & _IOC_WRITE) &&
  68                     copy_from_user(buf, base + argv->v_size * i,
  69                                    argv->v_size * n)) {
  70                         ret = -EFAULT;
  71                         break;
  72                 }
  73                 ppos = pos;
  74                 nr = dofunc(nilfs, &pos, argv->v_flags, buf, argv->v_size,
  75                                n);
  76                 if (nr < 0) {
  77                         ret = nr;
  78                         break;
  79                 }
  80                 if ((dir & _IOC_READ) &&
  81                     copy_to_user(base + argv->v_size * i, buf,
  82                                  argv->v_size * nr)) {
  83                         ret = -EFAULT;
  84                         break;
  85                 }
  86                 total += nr;
  87                 if ((size_t)nr < n)
  88                         break;
  89                 if (pos == ppos)
  90                         pos += n;
  91         }
  92         argv->v_nmembs = total;
  93
  94         free_pages((unsigned long)buf, 0);
  95         return ret;
  96 }
  97
  98 static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
  99                                      unsigned int cmd, void __user *argp)
 100 {
 101         struct inode *cpfile = NILFS_SB(inode->i_sb)->s_nilfs->ns_cpfile;
 102         struct nilfs_transaction_info ti;
 103         struct nilfs_cpmode cpmode;
 104         int ret;
 105
 106         if (!capable(CAP_SYS_ADMIN))
 107                 return -EPERM;
 108         if (copy_from_user(&cpmode, argp, sizeof(cpmode)))
 109                 return -EFAULT;
 110
 111         nilfs_transaction_begin(inode->i_sb, &ti, 0);
 112         ret = nilfs_cpfile_change_cpmode(
 113                 cpfile, cpmode.cm_cno, cpmode.cm_mode);
 114         if (unlikely(ret < 0)) {
 115                 nilfs_transaction_abort(inode->i_sb);
 116                 return ret;
 117         }
 118         nilfs_transaction_commit(inode->i_sb); /* never fails */
 119         return ret;
 120 }
 121
 122 static int
 123 nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp,
 124                               unsigned int cmd, void __user *argp)
 125 {
 126         struct inode *cpfile = NILFS_SB(inode->i_sb)->s_nilfs->ns_cpfile;
 127         struct nilfs_transaction_info ti;
 128         __u64 cno;
 129         int ret;
 130
 131         if (!capable(CAP_SYS_ADMIN))
 132                 return -EPERM;
 133         if (copy_from_user(&cno, argp, sizeof(cno)))
 134                 return -EFAULT;
 135
 136         nilfs_transaction_begin(inode->i_sb, &ti, 0);
 137         ret = nilfs_cpfile_delete_checkpoint(cpfile, cno);
 138         if (unlikely(ret < 0)) {
 139                 nilfs_transaction_abort(inode->i_sb);
 140                 return ret;
 141         }
 142         nilfs_transaction_commit(inode->i_sb); /* never fails */
 143         return ret;
 144 }
 145
 146 static ssize_t
 147 nilfs_ioctl_do_get_cpinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
 148                           void *buf, size_t size, size_t nmembs)
 149 {
 150         int ret;
 151
 152         down_read(&nilfs->ns_segctor_sem);
 153         ret = nilfs_cpfile_get_cpinfo(nilfs->ns_cpfile, posp, flags, buf,
 154                                       nmembs);
 155         up_read(&nilfs->ns_segctor_sem);
 156         return ret;
 157 }
 158
 159 static int nilfs_ioctl_get_cpstat(struct inode *inode, struct file *filp,
 160                                   unsigned int cmd, void __user *argp)
 161 {
 162         struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
 163         struct nilfs_cpstat cpstat;
 164         int ret;
 165
 166         down_read(&nilfs->ns_segctor_sem);
 167         ret = nilfs_cpfile_get_stat(nilfs->ns_cpfile, &cpstat);
 168         up_read(&nilfs->ns_segctor_sem);
 169         if (ret < 0)
 170                 return ret;
 171
 172         if (copy_to_user(argp, &cpstat, sizeof(cpstat)))
 173                 ret = -EFAULT;
 174         return ret;
 175 }
 176
 177 static ssize_t
 178 nilfs_ioctl_do_get_suinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
 179                           void *buf, size_t size, size_t nmembs)
 180 {
 181         int ret;
 182
 183         down_read(&nilfs->ns_segctor_sem);
 184         ret = nilfs_sufile_get_suinfo(nilfs->ns_sufile, *posp, buf, nmembs);
 185         up_read(&nilfs->ns_segctor_sem);
 186         return ret;
 187 }
 188
 189 static int nilfs_ioctl_get_sustat(struct inode *inode, struct file *filp,
 190                                   unsigned int cmd, void __user *argp)
 191 {
 192         struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
 193         struct nilfs_sustat sustat;
 194         int ret;
 195
 196         down_read(&nilfs->ns_segctor_sem);
 197         ret = nilfs_sufile_get_stat(nilfs->ns_sufile, &sustat);
 198         up_read(&nilfs->ns_segctor_sem);
 199         if (ret < 0)
 200                 return ret;
 201
 202         if (copy_to_user(argp, &sustat, sizeof(sustat)))
 203                 ret = -EFAULT;
 204         return ret;
 205 }
 206
 207 static ssize_t
 208 nilfs_ioctl_do_get_vinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
 209                          void *buf, size_t size, size_t nmembs)
 210 {
 211         int ret;
 212
 213         down_read(&nilfs->ns_segctor_sem);
 214         ret = nilfs_dat_get_vinfo(nilfs_dat_inode(nilfs), buf, nmembs);
 215         up_read(&nilfs->ns_segctor_sem);
 216         return ret;
 217 }
 218
 219 static ssize_t
 220 nilfs_ioctl_do_get_bdescs(struct the_nilfs *nilfs, __u64 *posp, int flags,
 221                           void *buf, size_t size, size_t nmembs)
 222 {
 223         struct inode *dat = nilfs_dat_inode(nilfs);
 224         struct nilfs_bmap *bmap = NILFS_I(dat)->i_bmap;
 225         struct nilfs_bdesc *bdescs = buf;
 226         int ret, i;
 227
 228         down_read(&nilfs->ns_segctor_sem);
 229         for (i = 0; i < nmembs; i++) {
 230                 ret = nilfs_bmap_lookup_at_level(bmap,
 231                                                  bdescs[i].bd_offset,
 232                                                  bdescs[i].bd_level + 1,
 233                                                  &bdescs[i].bd_blocknr);
 234                 if (ret < 0) {
 235                         if (ret != -ENOENT) {
 236                                 up_read(&nilfs->ns_segctor_sem);
 237                                 return ret;
 238                         }
 239                         bdescs[i].bd_blocknr = 0;
 240                 }
 241         }
 242         up_read(&nilfs->ns_segctor_sem);
 243         return nmembs;
 244 }
 245
 246 static int nilfs_ioctl_get_bdescs(struct inode *inode, struct file *filp,
 247                                   unsigned int cmd, void __user *argp)
 248 {
 249         struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
 250         struct nilfs_argv argv;
 251         int ret;
 252
 253         if (copy_from_user(&argv, argp, sizeof(argv)))
 254                 return -EFAULT;
 255
 256         ret = nilfs_ioctl_wrap_copy(nilfs, &argv, _IOC_DIR(cmd),
 257                                     nilfs_ioctl_do_get_bdescs);
 258         if (ret < 0)
 259                 return ret;
 260
 261         if (copy_to_user(argp, &argv, sizeof(argv)))
 262                 ret = -EFAULT;
 263         return ret;
 264 }
 265
 266 static int nilfs_ioctl_move_inode_block(struct inode *inode,
 267                                         struct nilfs_vdesc *vdesc,
 268                                         struct list_head *buffers)
 269 {
 270         struct buffer_head *bh;
 271         int ret;
 272
 273         if (vdesc->vd_flags == 0)
 274                 ret = nilfs_gccache_submit_read_data(
 275                         inode, vdesc->vd_offset, vdesc->vd_blocknr,
 276                         vdesc->vd_vblocknr, &bh);
 277         else
 278                 ret = nilfs_gccache_submit_read_node(
 279                         inode, vdesc->vd_blocknr, vdesc->vd_vblocknr, &bh);
 280
 281         if (unlikely(ret < 0)) {
 282                 if (ret == -ENOENT)
 283                         printk(KERN_CRIT
 284                                "%s: invalid virtual block address (%s): "
 285                                "ino=%llu, cno=%llu, offset=%llu, "
 286                                "blocknr=%llu, vblocknr=%llu\n",
 287                                __func__, vdesc->vd_flags ? "node" : "data",
 288                                (unsigned long long)vdesc->vd_ino,
 289                                (unsigned long long)vdesc->vd_cno,
 290                                (unsigned long long)vdesc->vd_offset,
 291                                (unsigned long long)vdesc->vd_blocknr,
 292                                (unsigned long long)vdesc->vd_vblocknr);
 293                 return ret;
 294         }
 295         bh->b_private = vdesc;
 296         list_add_tail(&bh->b_assoc_buffers, buffers);
 297         return 0;
 298 }
 299
 300 static ssize_t
 301 nilfs_ioctl_do_move_blocks(struct the_nilfs *nilfs, __u64 *posp, int flags,
 302                            void *buf, size_t size, size_t nmembs)
 303 {
 304         struct inode *inode;
 305         struct nilfs_vdesc *vdesc;
 306         struct buffer_head *bh, *n;
 307         LIST_HEAD(buffers);
 308         ino_t ino;
 309         __u64 cno;
 310         int i, ret;
 311
 312         for (i = 0, vdesc = buf; i < nmembs; ) {
 313                 ino = vdesc->vd_ino;
 314                 cno = vdesc->vd_cno;
 315                 inode = nilfs_gc_iget(nilfs, ino, cno);
 316                 if (unlikely(inode == NULL)) {
 317                         ret = -ENOMEM;
 318                         goto failed;
 319                 }
 320                 do {
 321                         ret = nilfs_ioctl_move_inode_block(inode, vdesc,
 322                                                            &buffers);
 323                         if (unlikely(ret < 0))
 324                                 goto failed;
 325                         vdesc++;
 326                 } while (++i < nmembs &&
 327                          vdesc->vd_ino == ino && vdesc->vd_cno == cno);
 328         }
 329
 330         list_for_each_entry_safe(bh, n, &buffers, b_assoc_buffers) {
 331                 ret = nilfs_gccache_wait_and_mark_dirty(bh);
 332                 if (unlikely(ret < 0)) {
 333                         if (ret == -EEXIST) {
 334                                 vdesc = bh->b_private;
 335                                 printk(KERN_CRIT
 336                                        "%s: conflicting %s buffer: "
 337                                        "ino=%llu, cno=%llu, offset=%llu, "
 338                                        "blocknr=%llu, vblocknr=%llu\n",
 339                                        __func__,
 340                                        vdesc->vd_flags ? "node" : "data",
 341                                        (unsigned long long)vdesc->vd_ino,
 342                                        (unsigned long long)vdesc->vd_cno,
 343                                        (unsigned long long)vdesc->vd_offset,
 344                                        (unsigned long long)vdesc->vd_blocknr,
 345                                        (unsigned long long)vdesc->vd_vblocknr);
 346                         }
 347                         goto failed;
 348                 }
 349                 list_del_init(&bh->b_assoc_buffers);
 350                 bh->b_private = NULL;
 351                 brelse(bh);
 352         }
 353         return nmembs;
 354
 355  failed:
 356         list_for_each_entry_safe(bh, n, &buffers, b_assoc_buffers) {
 357                 list_del_init(&bh->b_assoc_buffers);
 358                 bh->b_private = NULL;
 359                 brelse(bh);
 360         }
 361         return ret;
 362 }
 363
 364 static inline int nilfs_ioctl_move_blocks(struct the_nilfs *nilfs,
 365                                           struct nilfs_argv *argv,
 366                                           int dir)
 367 {
 368         return nilfs_ioctl_wrap_copy(nilfs, argv, dir,
 369                                      nilfs_ioctl_do_move_blocks);
 370 }
 371
 372 static ssize_t
 373 nilfs_ioctl_do_delete_checkpoints(struct the_nilfs *nilfs, __u64 *posp,
 374                                   int flags, void *buf, size_t size,
 375                                   size_t nmembs)
 376 {
 377         struct inode *cpfile = nilfs->ns_cpfile;
 378         struct nilfs_period *periods = buf;
 379         int ret, i;
 380
 381         for (i = 0; i < nmembs; i++) {
 382                 ret = nilfs_cpfile_delete_checkpoints(
 383                         cpfile, periods[i].p_start, periods[i].p_end);
 384                 if (ret < 0)
 385                         return ret;
 386         }
 387         return nmembs;
 388 }
 389
 390 static inline int nilfs_ioctl_delete_checkpoints(struct the_nilfs *nilfs,
 391                                                  struct nilfs_argv *argv,
 392                                                  int dir)
 393 {
 394         return nilfs_ioctl_wrap_copy(nilfs, argv, dir,
 395                                      nilfs_ioctl_do_delete_checkpoints);
 396 }
 397
 398 static ssize_t
 399 nilfs_ioctl_do_free_vblocknrs(struct the_nilfs *nilfs, __u64 *posp, int flags,
 400                               void *buf, size_t size, size_t nmembs)
 401 {
 402         int ret = nilfs_dat_freev(nilfs_dat_inode(nilfs), buf, nmembs);
 403
 404         return (ret < 0) ? ret : nmembs;
 405 }
 406
 407 static inline int nilfs_ioctl_free_vblocknrs(struct the_nilfs *nilfs,
 408                                              struct nilfs_argv *argv,
 409                                              int dir)
 410 {
 411         return nilfs_ioctl_wrap_copy(nilfs, argv, dir,
 412                                      nilfs_ioctl_do_free_vblocknrs);
 413 }
 414
 415 static ssize_t
 416 nilfs_ioctl_do_mark_blocks_dirty(struct the_nilfs *nilfs, __u64 *posp,
 417                                  int flags, void *buf, size_t size,
 418                                  size_t nmembs)
 419 {
 420         struct inode *dat = nilfs_dat_inode(nilfs);
 421         struct nilfs_bmap *bmap = NILFS_I(dat)->i_bmap;
 422         struct nilfs_bdesc *bdescs = buf;
 423         int ret, i;
 424
 425         for (i = 0; i < nmembs; i++) {
 426                 /* XXX: use macro or inline func to check liveness */
 427                 ret = nilfs_bmap_lookup_at_level(bmap,
 428                                                  bdescs[i].bd_offset,
 429                                                  bdescs[i].bd_level + 1,
 430                                                  &bdescs[i].bd_blocknr);
 431                 if (ret < 0) {
 432                         if (ret != -ENOENT)
 433                                 return ret;
 434                         bdescs[i].bd_blocknr = 0;
 435                 }
 436                 if (bdescs[i].bd_blocknr != bdescs[i].bd_oblocknr)
 437                         /* skip dead block */
 438                         continue;
 439                 if (bdescs[i].bd_level == 0) {
 440                         ret = nilfs_mdt_mark_block_dirty(dat,
 441                                                          bdescs[i].bd_offset);
 442                         if (ret < 0) {
 443                                 WARN_ON(ret == -ENOENT);
 444                                 return ret;
 445                         }
 446                 } else {
 447                         ret = nilfs_bmap_mark(bmap, bdescs[i].bd_offset,
 448                                               bdescs[i].bd_level);
 449                         if (ret < 0) {
 450                                 WARN_ON(ret == -ENOENT);
 451                                 return ret;
 452                         }
 453                 }
 454         }
 455         return nmembs;
 456 }
 457
 458 static inline int nilfs_ioctl_mark_blocks_dirty(struct the_nilfs *nilfs,
 459                                                 struct nilfs_argv *argv,
 460                                                 int dir)
 461 {
 462         return nilfs_ioctl_wrap_copy(nilfs, argv, dir,
 463                                      nilfs_ioctl_do_mark_blocks_dirty);
 464 }
 465
 466 static ssize_t
 467 nilfs_ioctl_do_free_segments(struct the_nilfs *nilfs, __u64 *posp, int flags,
 468                              void *buf, size_t size, size_t nmembs)
 469 {
 470         struct nilfs_sb_info *sbi = nilfs->ns_writer;
 471         int ret;
 472
 473         if (unlikely(!sbi)) {
 474                 /* never happens because called for a writable mount */
 475                 WARN_ON(1);
 476                 return -EROFS;
 477         }
 478         ret = nilfs_segctor_add_segments_to_be_freed(
 479                 NILFS_SC(sbi), buf, nmembs);
 480
 481         return (ret < 0) ? ret : nmembs;
 482 }
 483
 484 static inline int nilfs_ioctl_free_segments(struct the_nilfs *nilfs,
 485                                              struct nilfs_argv *argv,
 486                                              int dir)
 487 {
 488         return nilfs_ioctl_wrap_copy(nilfs, argv, dir,
 489                                      nilfs_ioctl_do_free_segments);
 490 }
 491
 492 int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *nilfs,
 493                                        void __user *argp)
 494 {
 495         struct nilfs_argv argv[5];
 496         const char *msg;
 497         int dir, ret;
 498
 499         if (copy_from_user(argv, argp, sizeof(argv)))
 500                 return -EFAULT;
 501
 502         dir = _IOC_WRITE;
 503         ret = nilfs_ioctl_move_blocks(nilfs, &argv[0], dir);
 504         if (ret < 0) {
 505                 msg = "cannot read source blocks";
 506                 goto failed;
 507         }
 508         ret = nilfs_ioctl_delete_checkpoints(nilfs, &argv[1], dir);
 509         if (ret < 0) {
 510                 /*
 511                  * can safely abort because checkpoints can be removed
 512                  * independently.
 513                  */
 514                 msg = "cannot delete checkpoints";
 515                 goto failed;
 516         }
 517         ret = nilfs_ioctl_free_vblocknrs(nilfs, &argv[2], dir);
 518         if (ret < 0) {
 519                 /*
 520                  * can safely abort because DAT file is updated atomically
 521                  * using a copy-on-write technique.
 522                  */
 523                 msg = "cannot delete virtual blocks from DAT file";
 524                 goto failed;
 525         }
 526         ret = nilfs_ioctl_mark_blocks_dirty(nilfs, &argv[3], dir);
 527         if (ret < 0) {
 528                 /*
 529                  * can safely abort because the operation is nondestructive.
 530                  */
 531                 msg = "cannot mark copying blocks dirty";
 532                 goto failed;
 533         }
 534         ret = nilfs_ioctl_free_segments(nilfs, &argv[4], dir);
 535         if (ret < 0) {
 536                 /*
 537                  * can safely abort because this operation is atomic.
 538                  */
 539                 msg = "cannot set segments to be freed";
 540                 goto failed;
 541         }
 542         return 0;
 543
 544  failed:
 545         nilfs_remove_all_gcinode(nilfs);
 546         printk(KERN_ERR "NILFS: GC failed during preparation: %s: err=%d\n",
 547                msg, ret);
 548         return ret;
 549 }
 550
 551 static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp,
 552                                       unsigned int cmd, void __user *argp)
 553 {
 554         if (!capable(CAP_SYS_ADMIN))
 555                 return -EPERM;
 556         return nilfs_clean_segments(inode->i_sb, argp);
 557 }
 558
 559 static int nilfs_ioctl_sync(struct inode *inode, struct file *filp,
 560                             unsigned int cmd, void __user *argp)
 561 {
 562         __u64 cno;
 563         int ret;
 564
 565         ret = nilfs_construct_segment(inode->i_sb);
 566         if (ret < 0)
 567                 return ret;
 568
 569         if (argp != NULL) {
 570                 cno = NILFS_SB(inode->i_sb)->s_nilfs->ns_cno - 1;
 571                 if (copy_to_user(argp, &cno, sizeof(cno)))
 572                         return -EFAULT;
 573         }
 574         return 0;
 575 }
 576
 577 static int nilfs_ioctl_get_info(struct inode *inode, struct file *filp,
 578                                 unsigned int cmd, void __user *argp,
 579                                 ssize_t (*dofunc)(struct the_nilfs *,
 580                                                   __u64 *, int,
 581                                                   void *, size_t, size_t))
 582
 583 {
 584         struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
 585         struct nilfs_argv argv;
 586         int ret;
 587
 588         if (copy_from_user(&argv, argp, sizeof(argv)))
 589                 return -EFAULT;
 590
 591         ret = nilfs_ioctl_wrap_copy(nilfs, &argv, _IOC_DIR(cmd), dofunc);
 592         if (ret < 0)
 593                 return ret;
 594
 595         if (copy_to_user(argp, &argv, sizeof(argv)))
 596                 ret = -EFAULT;
 597         return ret;
 598 }
 599
 600 long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 601 {
 602         struct inode *inode = filp->f_dentry->d_inode;
 603         void __user *argp = (void * __user *)arg;
 604
 605         switch (cmd) {
 606         case NILFS_IOCTL_CHANGE_CPMODE:
 607                 return nilfs_ioctl_change_cpmode(inode, filp, cmd, argp);
 608         case NILFS_IOCTL_DELETE_CHECKPOINT:
 609                 return nilfs_ioctl_delete_checkpoint(inode, filp, cmd, argp);
 610         case NILFS_IOCTL_GET_CPINFO:
 611                 return nilfs_ioctl_get_info(inode, filp, cmd, argp,
 612                                             nilfs_ioctl_do_get_cpinfo);
 613         case NILFS_IOCTL_GET_CPSTAT:
 614                 return nilfs_ioctl_get_cpstat(inode, filp, cmd, argp);
 615         case NILFS_IOCTL_GET_SUINFO:
 616                 return nilfs_ioctl_get_info(inode, filp, cmd, argp,
 617                                             nilfs_ioctl_do_get_suinfo);
 618         case NILFS_IOCTL_GET_SUSTAT:
 619                 return nilfs_ioctl_get_sustat(inode, filp, cmd, argp);
 620         case NILFS_IOCTL_GET_VINFO:
 621                 return nilfs_ioctl_get_info(inode, filp, cmd, argp,
 622                                             nilfs_ioctl_do_get_vinfo);
 623         case NILFS_IOCTL_GET_BDESCS:
 624                 return nilfs_ioctl_get_bdescs(inode, filp, cmd, argp);
 625         case NILFS_IOCTL_CLEAN_SEGMENTS:
 626                 return nilfs_ioctl_clean_segments(inode, filp, cmd, argp);
 627         case NILFS_IOCTL_SYNC:
 628                 return nilfs_ioctl_sync(inode, filp, cmd, argp);
 629         default:
 630                 return -ENOTTY;
 631         }
 632 }