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