fs/hpfs/namei.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *  linux/fs/hpfs/namei.c
   4  *
   5  *  Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
   6  *
   7  *  adding & removing files & directories
   8  */
   9 #include <linux/sched.h>
  10 #include "hpfs_fn.h"
  11
  12 static void hpfs_update_directory_times(struct inode *dir)
  13 {
  14         time_t t = get_seconds();
  15         if (t == dir->i_mtime.tv_sec &&
  16             t == dir->i_ctime.tv_sec)
  17                 return;
  18         dir->i_mtime.tv_sec = dir->i_ctime.tv_sec = t;
  19         dir->i_mtime.tv_nsec = dir->i_ctime.tv_nsec = 0;
  20         hpfs_write_inode_nolock(dir);
  21 }
  22
  23 static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
  24 {
  25         const unsigned char *name = dentry->d_name.name;
  26         unsigned len = dentry->d_name.len;
  27         struct quad_buffer_head qbh0;
  28         struct buffer_head *bh;
  29         struct hpfs_dirent *de;
  30         struct fnode *fnode;
  31         struct dnode *dnode;
  32         struct inode *result;
  33         fnode_secno fno;
  34         dnode_secno dno;
  35         int r;
  36         struct hpfs_dirent dee;
  37         int err;
  38         if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
  39         hpfs_lock(dir->i_sb);
  40         err = -ENOSPC;
  41         fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
  42         if (!fnode)
  43                 goto bail;
  44         dnode = hpfs_alloc_dnode(dir->i_sb, fno, &dno, &qbh0);
  45         if (!dnode)
  46                 goto bail1;
  47         memset(&dee, 0, sizeof dee);
  48         dee.directory = 1;
  49         if (!(mode & 0222)) dee.read_only = 1;
  50         /*dee.archive = 0;*/
  51         dee.hidden = name[0] == '.';
  52         dee.fnode = cpu_to_le32(fno);
  53         dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds()));
  54         result = new_inode(dir->i_sb);
  55         if (!result)
  56                 goto bail2;
  57         hpfs_init_inode(result);
  58         result->i_ino = fno;
  59         hpfs_i(result)->i_parent_dir = dir->i_ino;
  60         hpfs_i(result)->i_dno = dno;
  61         result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date));
  62         result->i_ctime.tv_nsec = 0;
  63         result->i_mtime.tv_nsec = 0;
  64         result->i_atime.tv_nsec = 0;
  65         hpfs_i(result)->i_ea_size = 0;
  66         result->i_mode |= S_IFDIR;
  67         result->i_op = &hpfs_dir_iops;
  68         result->i_fop = &hpfs_dir_ops;
  69         result->i_blocks = 4;
  70         result->i_size = 2048;
  71         set_nlink(result, 2);
  72         if (dee.read_only)
  73                 result->i_mode &= ~0222;
  74
  75         r = hpfs_add_dirent(dir, name, len, &dee);
  76         if (r == 1)
  77                 goto bail3;
  78         if (r == -1) {
  79                 err = -EEXIST;
  80                 goto bail3;
  81         }
  82         fnode->len = len;
  83         memcpy(fnode->name, name, len > 15 ? 15 : len);
  84         fnode->up = cpu_to_le32(dir->i_ino);
  85         fnode->flags |= FNODE_dir;
  86         fnode->btree.n_free_nodes = 7;
  87         fnode->btree.n_used_nodes = 1;
  88         fnode->btree.first_free = cpu_to_le16(0x14);
  89         fnode->u.external[0].disk_secno = cpu_to_le32(dno);
  90         fnode->u.external[0].file_secno = cpu_to_le32(-1);
  91         dnode->root_dnode = 1;
  92         dnode->up = cpu_to_le32(fno);
  93         de = hpfs_add_de(dir->i_sb, dnode, "\001\001", 2, 0);
  94         de->creation_date = de->write_date = de->read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds()));
  95         if (!(mode & 0222)) de->read_only = 1;
  96         de->first = de->directory = 1;
  97         /*de->hidden = de->system = 0;*/
  98         de->fnode = cpu_to_le32(fno);
  99         mark_buffer_dirty(bh);
 100         brelse(bh);
 101         hpfs_mark_4buffers_dirty(&qbh0);
 102         hpfs_brelse4(&qbh0);
 103         inc_nlink(dir);
 104         insert_inode_hash(result);
 105
 106         if (!uid_eq(result->i_uid, current_fsuid()) ||
 107             !gid_eq(result->i_gid, current_fsgid()) ||
 108             result->i_mode != (mode | S_IFDIR)) {
 109                 result->i_uid = current_fsuid();
 110                 result->i_gid = current_fsgid();
 111                 result->i_mode = mode | S_IFDIR;
 112                 hpfs_write_inode_nolock(result);
 113         }
 114         hpfs_update_directory_times(dir);
 115         d_instantiate(dentry, result);
 116         hpfs_unlock(dir->i_sb);
 117         return 0;
 118 bail3:
 119         iput(result);
 120 bail2:
 121         hpfs_brelse4(&qbh0);
 122         hpfs_free_dnode(dir->i_sb, dno);
 123 bail1:
 124         brelse(bh);
 125         hpfs_free_sectors(dir->i_sb, fno, 1);
 126 bail:
 127         hpfs_unlock(dir->i_sb);
 128         return err;
 129 }
 130
 131 static int hpfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl)
 132 {
 133         const unsigned char *name = dentry->d_name.name;
 134         unsigned len = dentry->d_name.len;
 135         struct inode *result = NULL;
 136         struct buffer_head *bh;
 137         struct fnode *fnode;
 138         fnode_secno fno;
 139         int r;
 140         struct hpfs_dirent dee;
 141         int err;
 142         if ((err = hpfs_chk_name(name, &len)))
 143                 return err==-ENOENT ? -EINVAL : err;
 144         hpfs_lock(dir->i_sb);
 145         err = -ENOSPC;
 146         fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
 147         if (!fnode)
 148                 goto bail;
 149         memset(&dee, 0, sizeof dee);
 150         if (!(mode & 0222)) dee.read_only = 1;
 151         dee.archive = 1;
 152         dee.hidden = name[0] == '.';
 153         dee.fnode = cpu_to_le32(fno);
 154         dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds()));
 155
 156         result = new_inode(dir->i_sb);
 157         if (!result)
 158                 goto bail1;
 159
 160         hpfs_init_inode(result);
 161         result->i_ino = fno;
 162         result->i_mode |= S_IFREG;
 163         result->i_mode &= ~0111;
 164         result->i_op = &hpfs_file_iops;
 165         result->i_fop = &hpfs_file_ops;
 166         set_nlink(result, 1);
 167         hpfs_i(result)->i_parent_dir = dir->i_ino;
 168         result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date));
 169         result->i_ctime.tv_nsec = 0;
 170         result->i_mtime.tv_nsec = 0;
 171         result->i_atime.tv_nsec = 0;
 172         hpfs_i(result)->i_ea_size = 0;
 173         if (dee.read_only)
 174                 result->i_mode &= ~0222;
 175         result->i_blocks = 1;
 176         result->i_size = 0;
 177         result->i_data.a_ops = &hpfs_aops;
 178         hpfs_i(result)->mmu_private = 0;
 179
 180         r = hpfs_add_dirent(dir, name, len, &dee);
 181         if (r == 1)
 182                 goto bail2;
 183         if (r == -1) {
 184                 err = -EEXIST;
 185                 goto bail2;
 186         }
 187         fnode->len = len;
 188         memcpy(fnode->name, name, len > 15 ? 15 : len);
 189         fnode->up = cpu_to_le32(dir->i_ino);
 190         mark_buffer_dirty(bh);
 191         brelse(bh);
 192
 193         insert_inode_hash(result);
 194
 195         if (!uid_eq(result->i_uid, current_fsuid()) ||
 196             !gid_eq(result->i_gid, current_fsgid()) ||
 197             result->i_mode != (mode | S_IFREG)) {
 198                 result->i_uid = current_fsuid();
 199                 result->i_gid = current_fsgid();
 200                 result->i_mode = mode | S_IFREG;
 201                 hpfs_write_inode_nolock(result);
 202         }
 203         hpfs_update_directory_times(dir);
 204         d_instantiate(dentry, result);
 205         hpfs_unlock(dir->i_sb);
 206         return 0;
 207
 208 bail2:
 209         iput(result);
 210 bail1:
 211         brelse(bh);
 212         hpfs_free_sectors(dir->i_sb, fno, 1);
 213 bail:
 214         hpfs_unlock(dir->i_sb);
 215         return err;
 216 }
 217
 218 static int hpfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev)
 219 {
 220         const unsigned char *name = dentry->d_name.name;
 221         unsigned len = dentry->d_name.len;
 222         struct buffer_head *bh;
 223         struct fnode *fnode;
 224         fnode_secno fno;
 225         int r;
 226         struct hpfs_dirent dee;
 227         struct inode *result = NULL;
 228         int err;
 229         if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
 230         if (hpfs_sb(dir->i_sb)->sb_eas < 2) return -EPERM;
 231         hpfs_lock(dir->i_sb);
 232         err = -ENOSPC;
 233         fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
 234         if (!fnode)
 235                 goto bail;
 236         memset(&dee, 0, sizeof dee);
 237         if (!(mode & 0222)) dee.read_only = 1;
 238         dee.archive = 1;
 239         dee.hidden = name[0] == '.';
 240         dee.fnode = cpu_to_le32(fno);
 241         dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds()));
 242
 243         result = new_inode(dir->i_sb);
 244         if (!result)
 245                 goto bail1;
 246
 247         hpfs_init_inode(result);
 248         result->i_ino = fno;
 249         hpfs_i(result)->i_parent_dir = dir->i_ino;
 250         result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date));
 251         result->i_ctime.tv_nsec = 0;
 252         result->i_mtime.tv_nsec = 0;
 253         result->i_atime.tv_nsec = 0;
 254         hpfs_i(result)->i_ea_size = 0;
 255         result->i_uid = current_fsuid();
 256         result->i_gid = current_fsgid();
 257         set_nlink(result, 1);
 258         result->i_size = 0;
 259         result->i_blocks = 1;
 260         init_special_inode(result, mode, rdev);
 261
 262         r = hpfs_add_dirent(dir, name, len, &dee);
 263         if (r == 1)
 264                 goto bail2;
 265         if (r == -1) {
 266                 err = -EEXIST;
 267                 goto bail2;
 268         }
 269         fnode->len = len;
 270         memcpy(fnode->name, name, len > 15 ? 15 : len);
 271         fnode->up = cpu_to_le32(dir->i_ino);
 272         mark_buffer_dirty(bh);
 273
 274         insert_inode_hash(result);
 275
 276         hpfs_write_inode_nolock(result);
 277         hpfs_update_directory_times(dir);
 278         d_instantiate(dentry, result);
 279         brelse(bh);
 280         hpfs_unlock(dir->i_sb);
 281         return 0;
 282 bail2:
 283         iput(result);
 284 bail1:
 285         brelse(bh);
 286         hpfs_free_sectors(dir->i_sb, fno, 1);
 287 bail:
 288         hpfs_unlock(dir->i_sb);
 289         return err;
 290 }
 291
 292 static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *symlink)
 293 {
 294         const unsigned char *name = dentry->d_name.name;
 295         unsigned len = dentry->d_name.len;
 296         struct buffer_head *bh;
 297         struct fnode *fnode;
 298         fnode_secno fno;
 299         int r;
 300         struct hpfs_dirent dee;
 301         struct inode *result;
 302         int err;
 303         if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
 304         hpfs_lock(dir->i_sb);
 305         if (hpfs_sb(dir->i_sb)->sb_eas < 2) {
 306                 hpfs_unlock(dir->i_sb);
 307                 return -EPERM;
 308         }
 309         err = -ENOSPC;
 310         fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
 311         if (!fnode)
 312                 goto bail;
 313         memset(&dee, 0, sizeof dee);
 314         dee.archive = 1;
 315         dee.hidden = name[0] == '.';
 316         dee.fnode = cpu_to_le32(fno);
 317         dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds()));
 318
 319         result = new_inode(dir->i_sb);
 320         if (!result)
 321                 goto bail1;
 322         result->i_ino = fno;
 323         hpfs_init_inode(result);
 324         hpfs_i(result)->i_parent_dir = dir->i_ino;
 325         result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date));
 326         result->i_ctime.tv_nsec = 0;
 327         result->i_mtime.tv_nsec = 0;
 328         result->i_atime.tv_nsec = 0;
 329         hpfs_i(result)->i_ea_size = 0;
 330         result->i_mode = S_IFLNK | 0777;
 331         result->i_uid = current_fsuid();
 332         result->i_gid = current_fsgid();
 333         result->i_blocks = 1;
 334         set_nlink(result, 1);
 335         result->i_size = strlen(symlink);
 336         inode_nohighmem(result);
 337         result->i_op = &page_symlink_inode_operations;
 338         result->i_data.a_ops = &hpfs_symlink_aops;
 339
 340         r = hpfs_add_dirent(dir, name, len, &dee);
 341         if (r == 1)
 342                 goto bail2;
 343         if (r == -1) {
 344                 err = -EEXIST;
 345                 goto bail2;
 346         }
 347         fnode->len = len;
 348         memcpy(fnode->name, name, len > 15 ? 15 : len);
 349         fnode->up = cpu_to_le32(dir->i_ino);
 350         hpfs_set_ea(result, fnode, "SYMLINK", symlink, strlen(symlink));
 351         mark_buffer_dirty(bh);
 352         brelse(bh);
 353
 354         insert_inode_hash(result);
 355
 356         hpfs_write_inode_nolock(result);
 357         hpfs_update_directory_times(dir);
 358         d_instantiate(dentry, result);
 359         hpfs_unlock(dir->i_sb);
 360         return 0;
 361 bail2:
 362         iput(result);
 363 bail1:
 364         brelse(bh);
 365         hpfs_free_sectors(dir->i_sb, fno, 1);
 366 bail:
 367         hpfs_unlock(dir->i_sb);
 368         return err;
 369 }
 370
 371 static int hpfs_unlink(struct inode *dir, struct dentry *dentry)
 372 {
 373         const unsigned char *name = dentry->d_name.name;
 374         unsigned len = dentry->d_name.len;
 375         struct quad_buffer_head qbh;
 376         struct hpfs_dirent *de;
 377         struct inode *inode = d_inode(dentry);
 378         dnode_secno dno;
 379         int r;
 380         int err;
 381
 382         hpfs_lock(dir->i_sb);
 383         hpfs_adjust_length(name, &len);
 384
 385         err = -ENOENT;
 386         de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
 387         if (!de)
 388                 goto out;
 389
 390         err = -EPERM;
 391         if (de->first)
 392                 goto out1;
 393
 394         err = -EISDIR;
 395         if (de->directory)
 396                 goto out1;
 397
 398         r = hpfs_remove_dirent(dir, dno, de, &qbh, 1);
 399         switch (r) {
 400         case 1:
 401                 hpfs_error(dir->i_sb, "there was error when removing dirent");
 402                 err = -EFSERROR;
 403                 break;
 404         case 2:         /* no space for deleting */
 405                 err = -ENOSPC;
 406                 break;
 407         default:
 408                 drop_nlink(inode);
 409                 err = 0;
 410         }
 411         goto out;
 412
 413 out1:
 414         hpfs_brelse4(&qbh);
 415 out:
 416         if (!err)
 417                 hpfs_update_directory_times(dir);
 418         hpfs_unlock(dir->i_sb);
 419         return err;
 420 }
 421
 422 static int hpfs_rmdir(struct inode *dir, struct dentry *dentry)
 423 {
 424         const unsigned char *name = dentry->d_name.name;
 425         unsigned len = dentry->d_name.len;
 426         struct quad_buffer_head qbh;
 427         struct hpfs_dirent *de;
 428         struct inode *inode = d_inode(dentry);
 429         dnode_secno dno;
 430         int n_items = 0;
 431         int err;
 432         int r;
 433
 434         hpfs_adjust_length(name, &len);
 435         hpfs_lock(dir->i_sb);
 436         err = -ENOENT;
 437         de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
 438         if (!de)
 439                 goto out;
 440
 441         err = -EPERM;
 442         if (de->first)
 443                 goto out1;
 444
 445         err = -ENOTDIR;
 446         if (!de->directory)
 447                 goto out1;
 448
 449         hpfs_count_dnodes(dir->i_sb, hpfs_i(inode)->i_dno, NULL, NULL, &n_items);
 450         err = -ENOTEMPTY;
 451         if (n_items)
 452                 goto out1;
 453
 454         r = hpfs_remove_dirent(dir, dno, de, &qbh, 1);
 455         switch (r) {
 456         case 1:
 457                 hpfs_error(dir->i_sb, "there was error when removing dirent");
 458                 err = -EFSERROR;
 459                 break;
 460         case 2:
 461                 err = -ENOSPC;
 462                 break;
 463         default:
 464                 drop_nlink(dir);
 465                 clear_nlink(inode);
 466                 err = 0;
 467         }
 468         goto out;
 469 out1:
 470         hpfs_brelse4(&qbh);
 471 out:
 472         if (!err)
 473                 hpfs_update_directory_times(dir);
 474         hpfs_unlock(dir->i_sb);
 475         return err;
 476 }
 477
 478 static int hpfs_symlink_readpage(struct file *file, struct page *page)
 479 {
 480         char *link = page_address(page);
 481         struct inode *i = page->mapping->host;
 482         struct fnode *fnode;
 483         struct buffer_head *bh;
 484         int err;
 485
 486         err = -EIO;
 487         hpfs_lock(i->i_sb);
 488         if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh)))
 489                 goto fail;
 490         err = hpfs_read_ea(i->i_sb, fnode, "SYMLINK", link, PAGE_SIZE);
 491         brelse(bh);
 492         if (err)
 493                 goto fail;
 494         hpfs_unlock(i->i_sb);
 495         SetPageUptodate(page);
 496         unlock_page(page);
 497         return 0;
 498
 499 fail:
 500         hpfs_unlock(i->i_sb);
 501         SetPageError(page);
 502         unlock_page(page);
 503         return err;
 504 }
 505
 506 const struct address_space_operations hpfs_symlink_aops = {
 507         .readpage       = hpfs_symlink_readpage
 508 };
 509
 510 static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 511                        struct inode *new_dir, struct dentry *new_dentry,
 512                        unsigned int flags)
 513 {
 514         const unsigned char *old_name = old_dentry->d_name.name;
 515         unsigned old_len = old_dentry->d_name.len;
 516         const unsigned char *new_name = new_dentry->d_name.name;
 517         unsigned new_len = new_dentry->d_name.len;
 518         struct inode *i = d_inode(old_dentry);
 519         struct inode *new_inode = d_inode(new_dentry);
 520         struct quad_buffer_head qbh, qbh1;
 521         struct hpfs_dirent *dep, *nde;
 522         struct hpfs_dirent de;
 523         dnode_secno dno;
 524         int r;
 525         struct buffer_head *bh;
 526         struct fnode *fnode;
 527         int err;
 528
 529         if (flags & ~RENAME_NOREPLACE)
 530                 return -EINVAL;
 531
 532         if ((err = hpfs_chk_name(new_name, &new_len))) return err;
 533         err = 0;
 534         hpfs_adjust_length(old_name, &old_len);
 535
 536         hpfs_lock(i->i_sb);
 537         /* order doesn't matter, due to VFS exclusion */
 538
 539         /* Erm? Moving over the empty non-busy directory is perfectly legal */
 540         if (new_inode && S_ISDIR(new_inode->i_mode)) {
 541                 err = -EINVAL;
 542                 goto end1;
 543         }
 544
 545         if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) {
 546                 hpfs_error(i->i_sb, "lookup succeeded but map dirent failed");
 547                 err = -ENOENT;
 548                 goto end1;
 549         }
 550         copy_de(&de, dep);
 551         de.hidden = new_name[0] == '.';
 552
 553         if (new_inode) {
 554                 int r;
 555                 if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 1)) != 2) {
 556                         if ((nde = map_dirent(new_dir, hpfs_i(new_dir)->i_dno, new_name, new_len, NULL, &qbh1))) {
 557                                 clear_nlink(new_inode);
 558                                 copy_de(nde, &de);
 559                                 memcpy(nde->name, new_name, new_len);
 560                                 hpfs_mark_4buffers_dirty(&qbh1);
 561                                 hpfs_brelse4(&qbh1);
 562                                 goto end;
 563                         }
 564                         hpfs_error(new_dir->i_sb, "hpfs_rename: could not find dirent");
 565                         err = -EFSERROR;
 566                         goto end1;
 567                 }
 568                 err = r == 2 ? -ENOSPC : r == 1 ? -EFSERROR : 0;
 569                 goto end1;
 570         }
 571
 572         if (new_dir == old_dir) hpfs_brelse4(&qbh);
 573
 574         if ((r = hpfs_add_dirent(new_dir, new_name, new_len, &de))) {
 575                 if (r == -1) hpfs_error(new_dir->i_sb, "hpfs_rename: dirent already exists!");
 576                 err = r == 1 ? -ENOSPC : -EFSERROR;
 577                 if (new_dir != old_dir) hpfs_brelse4(&qbh);
 578                 goto end1;
 579         }
 580
 581         if (new_dir == old_dir)
 582                 if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) {
 583                         hpfs_error(i->i_sb, "lookup succeeded but map dirent failed at #2");
 584                         err = -ENOENT;
 585                         goto end1;
 586                 }
 587
 588         if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 0))) {
 589                 hpfs_error(i->i_sb, "hpfs_rename: could not remove dirent");
 590                 err = r == 2 ? -ENOSPC : -EFSERROR;
 591                 goto end1;
 592         }
 593
 594 end:
 595         hpfs_i(i)->i_parent_dir = new_dir->i_ino;
 596         if (S_ISDIR(i->i_mode)) {
 597                 inc_nlink(new_dir);
 598                 drop_nlink(old_dir);
 599         }
 600         if ((fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) {
 601                 fnode->up = cpu_to_le32(new_dir->i_ino);
 602                 fnode->len = new_len;
 603                 memcpy(fnode->name, new_name, new_len>15?15:new_len);
 604                 if (new_len < 15) memset(&fnode->name[new_len], 0, 15 - new_len);
 605                 mark_buffer_dirty(bh);
 606                 brelse(bh);
 607         }
 608 end1:
 609         if (!err) {
 610                 hpfs_update_directory_times(old_dir);
 611                 hpfs_update_directory_times(new_dir);
 612         }
 613         hpfs_unlock(i->i_sb);
 614         return err;
 615 }
 616
 617 const struct inode_operations hpfs_dir_iops =
 618 {
 619         .create         = hpfs_create,
 620         .lookup         = hpfs_lookup,
 621         .unlink         = hpfs_unlink,
 622         .symlink        = hpfs_symlink,
 623         .mkdir          = hpfs_mkdir,
 624         .rmdir          = hpfs_rmdir,
 625         .mknod          = hpfs_mknod,
 626         .rename         = hpfs_rename,
 627         .setattr        = hpfs_setattr,
 628 };