[PATCH] Streamline generic_file_* interfaces and filemap cleanups
[linux-2.6.git] / fs / hfs / inode.c
1 /*
2  *  linux/fs/hfs/inode.c
3  *
4  * Copyright (C) 1995-1997  Paul H. Hargrove
5  * (C) 2003 Ardis Technologies <roman@ardistech.com>
6  * This file may be distributed under the terms of the GNU General Public License.
7  *
8  * This file contains inode-related functions which do not depend on
9  * which scheme is being used to represent forks.
10  *
11  * Based on the minix file system code, (C) 1991, 1992 by Linus Torvalds
12  */
13
14 #include <linux/pagemap.h>
15 #include <linux/mpage.h>
16
17 #include "hfs_fs.h"
18 #include "btree.h"
19
20 static const struct file_operations hfs_file_operations;
21 static struct inode_operations hfs_file_inode_operations;
22
23 /*================ Variable-like macros ================*/
24
25 #define HFS_VALID_MODE_BITS  (S_IFREG | S_IFDIR | S_IRWXUGO)
26
27 static int hfs_writepage(struct page *page, struct writeback_control *wbc)
28 {
29         return block_write_full_page(page, hfs_get_block, wbc);
30 }
31
32 static int hfs_readpage(struct file *file, struct page *page)
33 {
34         return block_read_full_page(page, hfs_get_block);
35 }
36
37 static int hfs_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to)
38 {
39         return cont_prepare_write(page, from, to, hfs_get_block,
40                                   &HFS_I(page->mapping->host)->phys_size);
41 }
42
43 static sector_t hfs_bmap(struct address_space *mapping, sector_t block)
44 {
45         return generic_block_bmap(mapping, block, hfs_get_block);
46 }
47
48 static int hfs_releasepage(struct page *page, gfp_t mask)
49 {
50         struct inode *inode = page->mapping->host;
51         struct super_block *sb = inode->i_sb;
52         struct hfs_btree *tree;
53         struct hfs_bnode *node;
54         u32 nidx;
55         int i, res = 1;
56
57         switch (inode->i_ino) {
58         case HFS_EXT_CNID:
59                 tree = HFS_SB(sb)->ext_tree;
60                 break;
61         case HFS_CAT_CNID:
62                 tree = HFS_SB(sb)->cat_tree;
63                 break;
64         default:
65                 BUG();
66                 return 0;
67         }
68         if (tree->node_size >= PAGE_CACHE_SIZE) {
69                 nidx = page->index >> (tree->node_size_shift - PAGE_CACHE_SHIFT);
70                 spin_lock(&tree->hash_lock);
71                 node = hfs_bnode_findhash(tree, nidx);
72                 if (!node)
73                         ;
74                 else if (atomic_read(&node->refcnt))
75                         res = 0;
76                 if (res && node) {
77                         hfs_bnode_unhash(node);
78                         hfs_bnode_free(node);
79                 }
80                 spin_unlock(&tree->hash_lock);
81         } else {
82                 nidx = page->index << (PAGE_CACHE_SHIFT - tree->node_size_shift);
83                 i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift);
84                 spin_lock(&tree->hash_lock);
85                 do {
86                         node = hfs_bnode_findhash(tree, nidx++);
87                         if (!node)
88                                 continue;
89                         if (atomic_read(&node->refcnt)) {
90                                 res = 0;
91                                 break;
92                         }
93                         hfs_bnode_unhash(node);
94                         hfs_bnode_free(node);
95                 } while (--i && nidx < tree->node_count);
96                 spin_unlock(&tree->hash_lock);
97         }
98         return res ? try_to_free_buffers(page) : 0;
99 }
100
101 static ssize_t hfs_direct_IO(int rw, struct kiocb *iocb,
102                 const struct iovec *iov, loff_t offset, unsigned long nr_segs)
103 {
104         struct file *file = iocb->ki_filp;
105         struct inode *inode = file->f_dentry->d_inode->i_mapping->host;
106
107         return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
108                                   offset, nr_segs, hfs_get_block, NULL);
109 }
110
111 static int hfs_writepages(struct address_space *mapping,
112                           struct writeback_control *wbc)
113 {
114         return mpage_writepages(mapping, wbc, hfs_get_block);
115 }
116
117 const struct address_space_operations hfs_btree_aops = {
118         .readpage       = hfs_readpage,
119         .writepage      = hfs_writepage,
120         .sync_page      = block_sync_page,
121         .prepare_write  = hfs_prepare_write,
122         .commit_write   = generic_commit_write,
123         .bmap           = hfs_bmap,
124         .releasepage    = hfs_releasepage,
125 };
126
127 const struct address_space_operations hfs_aops = {
128         .readpage       = hfs_readpage,
129         .writepage      = hfs_writepage,
130         .sync_page      = block_sync_page,
131         .prepare_write  = hfs_prepare_write,
132         .commit_write   = generic_commit_write,
133         .bmap           = hfs_bmap,
134         .direct_IO      = hfs_direct_IO,
135         .writepages     = hfs_writepages,
136 };
137
138 /*
139  * hfs_new_inode
140  */
141 struct inode *hfs_new_inode(struct inode *dir, struct qstr *name, int mode)
142 {
143         struct super_block *sb = dir->i_sb;
144         struct inode *inode = new_inode(sb);
145         if (!inode)
146                 return NULL;
147
148         init_MUTEX(&HFS_I(inode)->extents_lock);
149         INIT_LIST_HEAD(&HFS_I(inode)->open_dir_list);
150         hfs_cat_build_key(sb, (btree_key *)&HFS_I(inode)->cat_key, dir->i_ino, name);
151         inode->i_ino = HFS_SB(sb)->next_id++;
152         inode->i_mode = mode;
153         inode->i_uid = current->fsuid;
154         inode->i_gid = current->fsgid;
155         inode->i_nlink = 1;
156         inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
157         HFS_I(inode)->flags = 0;
158         HFS_I(inode)->rsrc_inode = NULL;
159         HFS_I(inode)->fs_blocks = 0;
160         if (S_ISDIR(mode)) {
161                 inode->i_size = 2;
162                 HFS_SB(sb)->folder_count++;
163                 if (dir->i_ino == HFS_ROOT_CNID)
164                         HFS_SB(sb)->root_dirs++;
165                 inode->i_op = &hfs_dir_inode_operations;
166                 inode->i_fop = &hfs_dir_operations;
167                 inode->i_mode |= S_IRWXUGO;
168                 inode->i_mode &= ~HFS_SB(inode->i_sb)->s_dir_umask;
169         } else if (S_ISREG(mode)) {
170                 HFS_I(inode)->clump_blocks = HFS_SB(sb)->clumpablks;
171                 HFS_SB(sb)->file_count++;
172                 if (dir->i_ino == HFS_ROOT_CNID)
173                         HFS_SB(sb)->root_files++;
174                 inode->i_op = &hfs_file_inode_operations;
175                 inode->i_fop = &hfs_file_operations;
176                 inode->i_mapping->a_ops = &hfs_aops;
177                 inode->i_mode |= S_IRUGO|S_IXUGO;
178                 if (mode & S_IWUSR)
179                         inode->i_mode |= S_IWUGO;
180                 inode->i_mode &= ~HFS_SB(inode->i_sb)->s_file_umask;
181                 HFS_I(inode)->phys_size = 0;
182                 HFS_I(inode)->alloc_blocks = 0;
183                 HFS_I(inode)->first_blocks = 0;
184                 HFS_I(inode)->cached_start = 0;
185                 HFS_I(inode)->cached_blocks = 0;
186                 memset(HFS_I(inode)->first_extents, 0, sizeof(hfs_extent_rec));
187                 memset(HFS_I(inode)->cached_extents, 0, sizeof(hfs_extent_rec));
188         }
189         insert_inode_hash(inode);
190         mark_inode_dirty(inode);
191         set_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags);
192         sb->s_dirt = 1;
193
194         return inode;
195 }
196
197 void hfs_delete_inode(struct inode *inode)
198 {
199         struct super_block *sb = inode->i_sb;
200
201         dprint(DBG_INODE, "delete_inode: %lu\n", inode->i_ino);
202         if (S_ISDIR(inode->i_mode)) {
203                 HFS_SB(sb)->folder_count--;
204                 if (HFS_I(inode)->cat_key.ParID == cpu_to_be32(HFS_ROOT_CNID))
205                         HFS_SB(sb)->root_dirs--;
206                 set_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags);
207                 sb->s_dirt = 1;
208                 return;
209         }
210         HFS_SB(sb)->file_count--;
211         if (HFS_I(inode)->cat_key.ParID == cpu_to_be32(HFS_ROOT_CNID))
212                 HFS_SB(sb)->root_files--;
213         if (S_ISREG(inode->i_mode)) {
214                 if (!inode->i_nlink) {
215                         inode->i_size = 0;
216                         hfs_file_truncate(inode);
217                 }
218         }
219         set_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags);
220         sb->s_dirt = 1;
221 }
222
223 void hfs_inode_read_fork(struct inode *inode, struct hfs_extent *ext,
224                          __be32 __log_size, __be32 phys_size, u32 clump_size)
225 {
226         struct super_block *sb = inode->i_sb;
227         u32 log_size = be32_to_cpu(__log_size);
228         u16 count;
229         int i;
230
231         memcpy(HFS_I(inode)->first_extents, ext, sizeof(hfs_extent_rec));
232         for (count = 0, i = 0; i < 3; i++)
233                 count += be16_to_cpu(ext[i].count);
234         HFS_I(inode)->first_blocks = count;
235
236         inode->i_size = HFS_I(inode)->phys_size = log_size;
237         HFS_I(inode)->fs_blocks = (log_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
238         inode_set_bytes(inode, HFS_I(inode)->fs_blocks << sb->s_blocksize_bits);
239         HFS_I(inode)->alloc_blocks = be32_to_cpu(phys_size) /
240                                      HFS_SB(sb)->alloc_blksz;
241         HFS_I(inode)->clump_blocks = clump_size / HFS_SB(sb)->alloc_blksz;
242         if (!HFS_I(inode)->clump_blocks)
243                 HFS_I(inode)->clump_blocks = HFS_SB(sb)->clumpablks;
244 }
245
246 struct hfs_iget_data {
247         struct hfs_cat_key *key;
248         hfs_cat_rec *rec;
249 };
250
251 static int hfs_test_inode(struct inode *inode, void *data)
252 {
253         struct hfs_iget_data *idata = data;
254         hfs_cat_rec *rec;
255
256         rec = idata->rec;
257         switch (rec->type) {
258         case HFS_CDR_DIR:
259                 return inode->i_ino == be32_to_cpu(rec->dir.DirID);
260         case HFS_CDR_FIL:
261                 return inode->i_ino == be32_to_cpu(rec->file.FlNum);
262         default:
263                 BUG();
264                 return 1;
265         }
266 }
267
268 /*
269  * hfs_read_inode
270  */
271 static int hfs_read_inode(struct inode *inode, void *data)
272 {
273         struct hfs_iget_data *idata = data;
274         struct hfs_sb_info *hsb = HFS_SB(inode->i_sb);
275         hfs_cat_rec *rec;
276
277         HFS_I(inode)->flags = 0;
278         HFS_I(inode)->rsrc_inode = NULL;
279         init_MUTEX(&HFS_I(inode)->extents_lock);
280         INIT_LIST_HEAD(&HFS_I(inode)->open_dir_list);
281
282         /* Initialize the inode */
283         inode->i_uid = hsb->s_uid;
284         inode->i_gid = hsb->s_gid;
285         inode->i_nlink = 1;
286
287         if (idata->key)
288                 HFS_I(inode)->cat_key = *idata->key;
289         else
290                 HFS_I(inode)->flags |= HFS_FLG_RSRC;
291         HFS_I(inode)->tz_secondswest = sys_tz.tz_minuteswest * 60;
292
293         rec = idata->rec;
294         switch (rec->type) {
295         case HFS_CDR_FIL:
296                 if (!HFS_IS_RSRC(inode)) {
297                         hfs_inode_read_fork(inode, rec->file.ExtRec, rec->file.LgLen,
298                                             rec->file.PyLen, be16_to_cpu(rec->file.ClpSize));
299                 } else {
300                         hfs_inode_read_fork(inode, rec->file.RExtRec, rec->file.RLgLen,
301                                             rec->file.RPyLen, be16_to_cpu(rec->file.ClpSize));
302                 }
303
304                 inode->i_ino = be32_to_cpu(rec->file.FlNum);
305                 inode->i_mode = S_IRUGO | S_IXUGO;
306                 if (!(rec->file.Flags & HFS_FIL_LOCK))
307                         inode->i_mode |= S_IWUGO;
308                 inode->i_mode &= ~hsb->s_file_umask;
309                 inode->i_mode |= S_IFREG;
310                 inode->i_ctime = inode->i_atime = inode->i_mtime =
311                                 hfs_m_to_utime(rec->file.MdDat);
312                 inode->i_op = &hfs_file_inode_operations;
313                 inode->i_fop = &hfs_file_operations;
314                 inode->i_mapping->a_ops = &hfs_aops;
315                 break;
316         case HFS_CDR_DIR:
317                 inode->i_ino = be32_to_cpu(rec->dir.DirID);
318                 inode->i_size = be16_to_cpu(rec->dir.Val) + 2;
319                 HFS_I(inode)->fs_blocks = 0;
320                 inode->i_mode = S_IFDIR | (S_IRWXUGO & ~hsb->s_dir_umask);
321                 inode->i_ctime = inode->i_atime = inode->i_mtime =
322                                 hfs_m_to_utime(rec->dir.MdDat);
323                 inode->i_op = &hfs_dir_inode_operations;
324                 inode->i_fop = &hfs_dir_operations;
325                 break;
326         default:
327                 make_bad_inode(inode);
328         }
329         return 0;
330 }
331
332 /*
333  * __hfs_iget()
334  *
335  * Given the MDB for a HFS filesystem, a 'key' and an 'entry' in
336  * the catalog B-tree and the 'type' of the desired file return the
337  * inode for that file/directory or NULL.  Note that 'type' indicates
338  * whether we want the actual file or directory, or the corresponding
339  * metadata (AppleDouble header file or CAP metadata file).
340  */
341 struct inode *hfs_iget(struct super_block *sb, struct hfs_cat_key *key, hfs_cat_rec *rec)
342 {
343         struct hfs_iget_data data = { key, rec };
344         struct inode *inode;
345         u32 cnid;
346
347         switch (rec->type) {
348         case HFS_CDR_DIR:
349                 cnid = be32_to_cpu(rec->dir.DirID);
350                 break;
351         case HFS_CDR_FIL:
352                 cnid = be32_to_cpu(rec->file.FlNum);
353                 break;
354         default:
355                 return NULL;
356         }
357         inode = iget5_locked(sb, cnid, hfs_test_inode, hfs_read_inode, &data);
358         if (inode && (inode->i_state & I_NEW))
359                 unlock_new_inode(inode);
360         return inode;
361 }
362
363 void hfs_inode_write_fork(struct inode *inode, struct hfs_extent *ext,
364                           __be32 *log_size, __be32 *phys_size)
365 {
366         memcpy(ext, HFS_I(inode)->first_extents, sizeof(hfs_extent_rec));
367
368         if (log_size)
369                 *log_size = cpu_to_be32(inode->i_size);
370         if (phys_size)
371                 *phys_size = cpu_to_be32(HFS_I(inode)->alloc_blocks *
372                                          HFS_SB(inode->i_sb)->alloc_blksz);
373 }
374
375 int hfs_write_inode(struct inode *inode, int unused)
376 {
377         struct inode *main_inode = inode;
378         struct hfs_find_data fd;
379         hfs_cat_rec rec;
380
381         dprint(DBG_INODE, "hfs_write_inode: %lu\n", inode->i_ino);
382         hfs_ext_write_extent(inode);
383
384         if (inode->i_ino < HFS_FIRSTUSER_CNID) {
385                 switch (inode->i_ino) {
386                 case HFS_ROOT_CNID:
387                         break;
388                 case HFS_EXT_CNID:
389                         hfs_btree_write(HFS_SB(inode->i_sb)->ext_tree);
390                         return 0;
391                 case HFS_CAT_CNID:
392                         hfs_btree_write(HFS_SB(inode->i_sb)->cat_tree);
393                         return 0;
394                 default:
395                         BUG();
396                         return -EIO;
397                 }
398         }
399
400         if (HFS_IS_RSRC(inode))
401                 main_inode = HFS_I(inode)->rsrc_inode;
402
403         if (!main_inode->i_nlink)
404                 return 0;
405
406         if (hfs_find_init(HFS_SB(main_inode->i_sb)->cat_tree, &fd))
407                 /* panic? */
408                 return -EIO;
409
410         fd.search_key->cat = HFS_I(main_inode)->cat_key;
411         if (hfs_brec_find(&fd))
412                 /* panic? */
413                 goto out;
414
415         if (S_ISDIR(main_inode->i_mode)) {
416                 if (fd.entrylength < sizeof(struct hfs_cat_dir))
417                         /* panic? */;
418                 hfs_bnode_read(fd.bnode, &rec, fd.entryoffset,
419                            sizeof(struct hfs_cat_dir));
420                 if (rec.type != HFS_CDR_DIR ||
421                     be32_to_cpu(rec.dir.DirID) != inode->i_ino) {
422                 }
423
424                 rec.dir.MdDat = hfs_u_to_mtime(inode->i_mtime);
425                 rec.dir.Val = cpu_to_be16(inode->i_size - 2);
426
427                 hfs_bnode_write(fd.bnode, &rec, fd.entryoffset,
428                             sizeof(struct hfs_cat_dir));
429         } else if (HFS_IS_RSRC(inode)) {
430                 hfs_bnode_read(fd.bnode, &rec, fd.entryoffset,
431                                sizeof(struct hfs_cat_file));
432                 hfs_inode_write_fork(inode, rec.file.RExtRec,
433                                      &rec.file.RLgLen, &rec.file.RPyLen);
434                 hfs_bnode_write(fd.bnode, &rec, fd.entryoffset,
435                                 sizeof(struct hfs_cat_file));
436         } else {
437                 if (fd.entrylength < sizeof(struct hfs_cat_file))
438                         /* panic? */;
439                 hfs_bnode_read(fd.bnode, &rec, fd.entryoffset,
440                            sizeof(struct hfs_cat_file));
441                 if (rec.type != HFS_CDR_FIL ||
442                     be32_to_cpu(rec.file.FlNum) != inode->i_ino) {
443                 }
444
445                 if (inode->i_mode & S_IWUSR)
446                         rec.file.Flags &= ~HFS_FIL_LOCK;
447                 else
448                         rec.file.Flags |= HFS_FIL_LOCK;
449                 hfs_inode_write_fork(inode, rec.file.ExtRec, &rec.file.LgLen, &rec.file.PyLen);
450                 rec.file.MdDat = hfs_u_to_mtime(inode->i_mtime);
451
452                 hfs_bnode_write(fd.bnode, &rec, fd.entryoffset,
453                             sizeof(struct hfs_cat_file));
454         }
455 out:
456         hfs_find_exit(&fd);
457         return 0;
458 }
459
460 static struct dentry *hfs_file_lookup(struct inode *dir, struct dentry *dentry,
461                                       struct nameidata *nd)
462 {
463         struct inode *inode = NULL;
464         hfs_cat_rec rec;
465         struct hfs_find_data fd;
466         int res;
467
468         if (HFS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
469                 goto out;
470
471         inode = HFS_I(dir)->rsrc_inode;
472         if (inode)
473                 goto out;
474
475         inode = new_inode(dir->i_sb);
476         if (!inode)
477                 return ERR_PTR(-ENOMEM);
478
479         hfs_find_init(HFS_SB(dir->i_sb)->cat_tree, &fd);
480         fd.search_key->cat = HFS_I(dir)->cat_key;
481         res = hfs_brec_read(&fd, &rec, sizeof(rec));
482         if (!res) {
483                 struct hfs_iget_data idata = { NULL, &rec };
484                 hfs_read_inode(inode, &idata);
485         }
486         hfs_find_exit(&fd);
487         if (res) {
488                 iput(inode);
489                 return ERR_PTR(res);
490         }
491         HFS_I(inode)->rsrc_inode = dir;
492         HFS_I(dir)->rsrc_inode = inode;
493         igrab(dir);
494         hlist_add_head(&inode->i_hash, &HFS_SB(dir->i_sb)->rsrc_inodes);
495         mark_inode_dirty(inode);
496 out:
497         d_add(dentry, inode);
498         return NULL;
499 }
500
501 void hfs_clear_inode(struct inode *inode)
502 {
503         if (HFS_IS_RSRC(inode) && HFS_I(inode)->rsrc_inode) {
504                 HFS_I(HFS_I(inode)->rsrc_inode)->rsrc_inode = NULL;
505                 iput(HFS_I(inode)->rsrc_inode);
506         }
507 }
508
509 static int hfs_permission(struct inode *inode, int mask,
510                           struct nameidata *nd)
511 {
512         if (S_ISREG(inode->i_mode) && mask & MAY_EXEC)
513                 return 0;
514         return generic_permission(inode, mask, NULL);
515 }
516
517 static int hfs_file_open(struct inode *inode, struct file *file)
518 {
519         if (HFS_IS_RSRC(inode))
520                 inode = HFS_I(inode)->rsrc_inode;
521         if (atomic_read(&file->f_count) != 1)
522                 return 0;
523         atomic_inc(&HFS_I(inode)->opencnt);
524         return 0;
525 }
526
527 static int hfs_file_release(struct inode *inode, struct file *file)
528 {
529         //struct super_block *sb = inode->i_sb;
530
531         if (HFS_IS_RSRC(inode))
532                 inode = HFS_I(inode)->rsrc_inode;
533         if (atomic_read(&file->f_count) != 0)
534                 return 0;
535         if (atomic_dec_and_test(&HFS_I(inode)->opencnt)) {
536                 mutex_lock(&inode->i_mutex);
537                 hfs_file_truncate(inode);
538                 //if (inode->i_flags & S_DEAD) {
539                 //      hfs_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL);
540                 //      hfs_delete_inode(inode);
541                 //}
542                 mutex_unlock(&inode->i_mutex);
543         }
544         return 0;
545 }
546
547 /*
548  * hfs_notify_change()
549  *
550  * Based very closely on fs/msdos/inode.c by Werner Almesberger
551  *
552  * This is the notify_change() field in the super_operations structure
553  * for HFS file systems.  The purpose is to take that changes made to
554  * an inode and apply then in a filesystem-dependent manner.  In this
555  * case the process has a few of tasks to do:
556  *  1) prevent changes to the i_uid and i_gid fields.
557  *  2) map file permissions to the closest allowable permissions
558  *  3) Since multiple Linux files can share the same on-disk inode under
559  *     HFS (for instance the data and resource forks of a file) a change
560  *     to permissions must be applied to all other in-core inodes which
561  *     correspond to the same HFS file.
562  */
563
564 int hfs_inode_setattr(struct dentry *dentry, struct iattr * attr)
565 {
566         struct inode *inode = dentry->d_inode;
567         struct hfs_sb_info *hsb = HFS_SB(inode->i_sb);
568         int error;
569
570         error = inode_change_ok(inode, attr); /* basic permission checks */
571         if (error)
572                 return error;
573
574         /* no uig/gid changes and limit which mode bits can be set */
575         if (((attr->ia_valid & ATTR_UID) &&
576              (attr->ia_uid != hsb->s_uid)) ||
577             ((attr->ia_valid & ATTR_GID) &&
578              (attr->ia_gid != hsb->s_gid)) ||
579             ((attr->ia_valid & ATTR_MODE) &&
580              ((S_ISDIR(inode->i_mode) &&
581                (attr->ia_mode != inode->i_mode)) ||
582               (attr->ia_mode & ~HFS_VALID_MODE_BITS)))) {
583                 return hsb->s_quiet ? 0 : error;
584         }
585
586         if (attr->ia_valid & ATTR_MODE) {
587                 /* Only the 'w' bits can ever change and only all together. */
588                 if (attr->ia_mode & S_IWUSR)
589                         attr->ia_mode = inode->i_mode | S_IWUGO;
590                 else
591                         attr->ia_mode = inode->i_mode & ~S_IWUGO;
592                 attr->ia_mode &= S_ISDIR(inode->i_mode) ? ~hsb->s_dir_umask: ~hsb->s_file_umask;
593         }
594         error = inode_setattr(inode, attr);
595         if (error)
596                 return error;
597
598         return 0;
599 }
600
601
602 static const struct file_operations hfs_file_operations = {
603         .llseek         = generic_file_llseek,
604         .read           = do_sync_read,
605         .aio_read       = generic_file_aio_read,
606         .write          = do_sync_write,
607         .aio_write      = generic_file_aio_write,
608         .mmap           = generic_file_mmap,
609         .sendfile       = generic_file_sendfile,
610         .fsync          = file_fsync,
611         .open           = hfs_file_open,
612         .release        = hfs_file_release,
613 };
614
615 static struct inode_operations hfs_file_inode_operations = {
616         .lookup         = hfs_file_lookup,
617         .truncate       = hfs_file_truncate,
618         .setattr        = hfs_inode_setattr,
619         .permission     = hfs_permission,
620         .setxattr       = hfs_setxattr,
621         .getxattr       = hfs_getxattr,
622         .listxattr      = hfs_listxattr,
623 };