[PATCH] sanitize ->permission() prototype
[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         if (tree->node_size >= PAGE_CACHE_SIZE) {
74                 nidx = page->index >> (tree->node_size_shift - PAGE_CACHE_SHIFT);
75                 spin_lock(&tree->hash_lock);
76                 node = hfs_bnode_findhash(tree, nidx);
77                 if (!node)
78                         ;
79                 else if (atomic_read(&node->refcnt))
80                         res = 0;
81                 if (res && node) {
82                         hfs_bnode_unhash(node);
83                         hfs_bnode_free(node);
84                 }
85                 spin_unlock(&tree->hash_lock);
86         } else {
87                 nidx = page->index << (PAGE_CACHE_SHIFT - tree->node_size_shift);
88                 i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift);
89                 spin_lock(&tree->hash_lock);
90                 do {
91                         node = hfs_bnode_findhash(tree, nidx++);
92                         if (!node)
93                                 continue;
94                         if (atomic_read(&node->refcnt)) {
95                                 res = 0;
96                                 break;
97                         }
98                         hfs_bnode_unhash(node);
99                         hfs_bnode_free(node);
100                 } while (--i && nidx < tree->node_count);
101                 spin_unlock(&tree->hash_lock);
102         }
103         return res ? try_to_free_buffers(page) : 0;
104 }
105
106 static ssize_t hfs_direct_IO(int rw, struct kiocb *iocb,
107                 const struct iovec *iov, loff_t offset, unsigned long nr_segs)
108 {
109         struct file *file = iocb->ki_filp;
110         struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
111
112         return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
113                                   offset, nr_segs, hfs_get_block, NULL);
114 }
115
116 static int hfs_writepages(struct address_space *mapping,
117                           struct writeback_control *wbc)
118 {
119         return mpage_writepages(mapping, wbc, hfs_get_block);
120 }
121
122 const struct address_space_operations hfs_btree_aops = {
123         .readpage       = hfs_readpage,
124         .writepage      = hfs_writepage,
125         .sync_page      = block_sync_page,
126         .write_begin    = hfs_write_begin,
127         .write_end      = generic_write_end,
128         .bmap           = hfs_bmap,
129         .releasepage    = hfs_releasepage,
130 };
131
132 const struct address_space_operations hfs_aops = {
133         .readpage       = hfs_readpage,
134         .writepage      = hfs_writepage,
135         .sync_page      = block_sync_page,
136         .write_begin    = hfs_write_begin,
137         .write_end      = generic_write_end,
138         .bmap           = hfs_bmap,
139         .direct_IO      = hfs_direct_IO,
140         .writepages     = hfs_writepages,
141 };
142
143 /*
144  * hfs_new_inode
145  */
146 struct inode *hfs_new_inode(struct inode *dir, struct qstr *name, int mode)
147 {
148         struct super_block *sb = dir->i_sb;
149         struct inode *inode = new_inode(sb);
150         if (!inode)
151                 return NULL;
152
153         mutex_init(&HFS_I(inode)->extents_lock);
154         INIT_LIST_HEAD(&HFS_I(inode)->open_dir_list);
155         hfs_cat_build_key(sb, (btree_key *)&HFS_I(inode)->cat_key, dir->i_ino, name);
156         inode->i_ino = HFS_SB(sb)->next_id++;
157         inode->i_mode = mode;
158         inode->i_uid = current->fsuid;
159         inode->i_gid = current->fsgid;
160         inode->i_nlink = 1;
161         inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
162         HFS_I(inode)->flags = 0;
163         HFS_I(inode)->rsrc_inode = NULL;
164         HFS_I(inode)->fs_blocks = 0;
165         if (S_ISDIR(mode)) {
166                 inode->i_size = 2;
167                 HFS_SB(sb)->folder_count++;
168                 if (dir->i_ino == HFS_ROOT_CNID)
169                         HFS_SB(sb)->root_dirs++;
170                 inode->i_op = &hfs_dir_inode_operations;
171                 inode->i_fop = &hfs_dir_operations;
172                 inode->i_mode |= S_IRWXUGO;
173                 inode->i_mode &= ~HFS_SB(inode->i_sb)->s_dir_umask;
174         } else if (S_ISREG(mode)) {
175                 HFS_I(inode)->clump_blocks = HFS_SB(sb)->clumpablks;
176                 HFS_SB(sb)->file_count++;
177                 if (dir->i_ino == HFS_ROOT_CNID)
178                         HFS_SB(sb)->root_files++;
179                 inode->i_op = &hfs_file_inode_operations;
180                 inode->i_fop = &hfs_file_operations;
181                 inode->i_mapping->a_ops = &hfs_aops;
182                 inode->i_mode |= S_IRUGO|S_IXUGO;
183                 if (mode & S_IWUSR)
184                         inode->i_mode |= S_IWUGO;
185                 inode->i_mode &= ~HFS_SB(inode->i_sb)->s_file_umask;
186                 HFS_I(inode)->phys_size = 0;
187                 HFS_I(inode)->alloc_blocks = 0;
188                 HFS_I(inode)->first_blocks = 0;
189                 HFS_I(inode)->cached_start = 0;
190                 HFS_I(inode)->cached_blocks = 0;
191                 memset(HFS_I(inode)->first_extents, 0, sizeof(hfs_extent_rec));
192                 memset(HFS_I(inode)->cached_extents, 0, sizeof(hfs_extent_rec));
193         }
194         insert_inode_hash(inode);
195         mark_inode_dirty(inode);
196         set_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags);
197         sb->s_dirt = 1;
198
199         return inode;
200 }
201
202 void hfs_delete_inode(struct inode *inode)
203 {
204         struct super_block *sb = inode->i_sb;
205
206         dprint(DBG_INODE, "delete_inode: %lu\n", inode->i_ino);
207         if (S_ISDIR(inode->i_mode)) {
208                 HFS_SB(sb)->folder_count--;
209                 if (HFS_I(inode)->cat_key.ParID == cpu_to_be32(HFS_ROOT_CNID))
210                         HFS_SB(sb)->root_dirs--;
211                 set_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags);
212                 sb->s_dirt = 1;
213                 return;
214         }
215         HFS_SB(sb)->file_count--;
216         if (HFS_I(inode)->cat_key.ParID == cpu_to_be32(HFS_ROOT_CNID))
217                 HFS_SB(sb)->root_files--;
218         if (S_ISREG(inode->i_mode)) {
219                 if (!inode->i_nlink) {
220                         inode->i_size = 0;
221                         hfs_file_truncate(inode);
222                 }
223         }
224         set_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags);
225         sb->s_dirt = 1;
226 }
227
228 void hfs_inode_read_fork(struct inode *inode, struct hfs_extent *ext,
229                          __be32 __log_size, __be32 phys_size, u32 clump_size)
230 {
231         struct super_block *sb = inode->i_sb;
232         u32 log_size = be32_to_cpu(__log_size);
233         u16 count;
234         int i;
235
236         memcpy(HFS_I(inode)->first_extents, ext, sizeof(hfs_extent_rec));
237         for (count = 0, i = 0; i < 3; i++)
238                 count += be16_to_cpu(ext[i].count);
239         HFS_I(inode)->first_blocks = count;
240
241         inode->i_size = HFS_I(inode)->phys_size = log_size;
242         HFS_I(inode)->fs_blocks = (log_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
243         inode_set_bytes(inode, HFS_I(inode)->fs_blocks << sb->s_blocksize_bits);
244         HFS_I(inode)->alloc_blocks = be32_to_cpu(phys_size) /
245                                      HFS_SB(sb)->alloc_blksz;
246         HFS_I(inode)->clump_blocks = clump_size / HFS_SB(sb)->alloc_blksz;
247         if (!HFS_I(inode)->clump_blocks)
248                 HFS_I(inode)->clump_blocks = HFS_SB(sb)->clumpablks;
249 }
250
251 struct hfs_iget_data {
252         struct hfs_cat_key *key;
253         hfs_cat_rec *rec;
254 };
255
256 static int hfs_test_inode(struct inode *inode, void *data)
257 {
258         struct hfs_iget_data *idata = data;
259         hfs_cat_rec *rec;
260
261         rec = idata->rec;
262         switch (rec->type) {
263         case HFS_CDR_DIR:
264                 return inode->i_ino == be32_to_cpu(rec->dir.DirID);
265         case HFS_CDR_FIL:
266                 return inode->i_ino == be32_to_cpu(rec->file.FlNum);
267         default:
268                 BUG();
269                 return 1;
270         }
271 }
272
273 /*
274  * hfs_read_inode
275  */
276 static int hfs_read_inode(struct inode *inode, void *data)
277 {
278         struct hfs_iget_data *idata = data;
279         struct hfs_sb_info *hsb = HFS_SB(inode->i_sb);
280         hfs_cat_rec *rec;
281
282         HFS_I(inode)->flags = 0;
283         HFS_I(inode)->rsrc_inode = NULL;
284         mutex_init(&HFS_I(inode)->extents_lock);
285         INIT_LIST_HEAD(&HFS_I(inode)->open_dir_list);
286
287         /* Initialize the inode */
288         inode->i_uid = hsb->s_uid;
289         inode->i_gid = hsb->s_gid;
290         inode->i_nlink = 1;
291
292         if (idata->key)
293                 HFS_I(inode)->cat_key = *idata->key;
294         else
295                 HFS_I(inode)->flags |= HFS_FLG_RSRC;
296         HFS_I(inode)->tz_secondswest = sys_tz.tz_minuteswest * 60;
297
298         rec = idata->rec;
299         switch (rec->type) {
300         case HFS_CDR_FIL:
301                 if (!HFS_IS_RSRC(inode)) {
302                         hfs_inode_read_fork(inode, rec->file.ExtRec, rec->file.LgLen,
303                                             rec->file.PyLen, be16_to_cpu(rec->file.ClpSize));
304                 } else {
305                         hfs_inode_read_fork(inode, rec->file.RExtRec, rec->file.RLgLen,
306                                             rec->file.RPyLen, be16_to_cpu(rec->file.ClpSize));
307                 }
308
309                 inode->i_ino = be32_to_cpu(rec->file.FlNum);
310                 inode->i_mode = S_IRUGO | S_IXUGO;
311                 if (!(rec->file.Flags & HFS_FIL_LOCK))
312                         inode->i_mode |= S_IWUGO;
313                 inode->i_mode &= ~hsb->s_file_umask;
314                 inode->i_mode |= S_IFREG;
315                 inode->i_ctime = inode->i_atime = inode->i_mtime =
316                                 hfs_m_to_utime(rec->file.MdDat);
317                 inode->i_op = &hfs_file_inode_operations;
318                 inode->i_fop = &hfs_file_operations;
319                 inode->i_mapping->a_ops = &hfs_aops;
320                 break;
321         case HFS_CDR_DIR:
322                 inode->i_ino = be32_to_cpu(rec->dir.DirID);
323                 inode->i_size = be16_to_cpu(rec->dir.Val) + 2;
324                 HFS_I(inode)->fs_blocks = 0;
325                 inode->i_mode = S_IFDIR | (S_IRWXUGO & ~hsb->s_dir_umask);
326                 inode->i_ctime = inode->i_atime = inode->i_mtime =
327                                 hfs_m_to_utime(rec->dir.MdDat);
328                 inode->i_op = &hfs_dir_inode_operations;
329                 inode->i_fop = &hfs_dir_operations;
330                 break;
331         default:
332                 make_bad_inode(inode);
333         }
334         return 0;
335 }
336
337 /*
338  * __hfs_iget()
339  *
340  * Given the MDB for a HFS filesystem, a 'key' and an 'entry' in
341  * the catalog B-tree and the 'type' of the desired file return the
342  * inode for that file/directory or NULL.  Note that 'type' indicates
343  * whether we want the actual file or directory, or the corresponding
344  * metadata (AppleDouble header file or CAP metadata file).
345  */
346 struct inode *hfs_iget(struct super_block *sb, struct hfs_cat_key *key, hfs_cat_rec *rec)
347 {
348         struct hfs_iget_data data = { key, rec };
349         struct inode *inode;
350         u32 cnid;
351
352         switch (rec->type) {
353         case HFS_CDR_DIR:
354                 cnid = be32_to_cpu(rec->dir.DirID);
355                 break;
356         case HFS_CDR_FIL:
357                 cnid = be32_to_cpu(rec->file.FlNum);
358                 break;
359         default:
360                 return NULL;
361         }
362         inode = iget5_locked(sb, cnid, hfs_test_inode, hfs_read_inode, &data);
363         if (inode && (inode->i_state & I_NEW))
364                 unlock_new_inode(inode);
365         return inode;
366 }
367
368 void hfs_inode_write_fork(struct inode *inode, struct hfs_extent *ext,
369                           __be32 *log_size, __be32 *phys_size)
370 {
371         memcpy(ext, HFS_I(inode)->first_extents, sizeof(hfs_extent_rec));
372
373         if (log_size)
374                 *log_size = cpu_to_be32(inode->i_size);
375         if (phys_size)
376                 *phys_size = cpu_to_be32(HFS_I(inode)->alloc_blocks *
377                                          HFS_SB(inode->i_sb)->alloc_blksz);
378 }
379
380 int hfs_write_inode(struct inode *inode, int unused)
381 {
382         struct inode *main_inode = inode;
383         struct hfs_find_data fd;
384         hfs_cat_rec rec;
385
386         dprint(DBG_INODE, "hfs_write_inode: %lu\n", inode->i_ino);
387         hfs_ext_write_extent(inode);
388
389         if (inode->i_ino < HFS_FIRSTUSER_CNID) {
390                 switch (inode->i_ino) {
391                 case HFS_ROOT_CNID:
392                         break;
393                 case HFS_EXT_CNID:
394                         hfs_btree_write(HFS_SB(inode->i_sb)->ext_tree);
395                         return 0;
396                 case HFS_CAT_CNID:
397                         hfs_btree_write(HFS_SB(inode->i_sb)->cat_tree);
398                         return 0;
399                 default:
400                         BUG();
401                         return -EIO;
402                 }
403         }
404
405         if (HFS_IS_RSRC(inode))
406                 main_inode = HFS_I(inode)->rsrc_inode;
407
408         if (!main_inode->i_nlink)
409                 return 0;
410
411         if (hfs_find_init(HFS_SB(main_inode->i_sb)->cat_tree, &fd))
412                 /* panic? */
413                 return -EIO;
414
415         fd.search_key->cat = HFS_I(main_inode)->cat_key;
416         if (hfs_brec_find(&fd))
417                 /* panic? */
418                 goto out;
419
420         if (S_ISDIR(main_inode->i_mode)) {
421                 if (fd.entrylength < sizeof(struct hfs_cat_dir))
422                         /* panic? */;
423                 hfs_bnode_read(fd.bnode, &rec, fd.entryoffset,
424                            sizeof(struct hfs_cat_dir));
425                 if (rec.type != HFS_CDR_DIR ||
426                     be32_to_cpu(rec.dir.DirID) != inode->i_ino) {
427                 }
428
429                 rec.dir.MdDat = hfs_u_to_mtime(inode->i_mtime);
430                 rec.dir.Val = cpu_to_be16(inode->i_size - 2);
431
432                 hfs_bnode_write(fd.bnode, &rec, fd.entryoffset,
433                             sizeof(struct hfs_cat_dir));
434         } else if (HFS_IS_RSRC(inode)) {
435                 hfs_bnode_read(fd.bnode, &rec, fd.entryoffset,
436                                sizeof(struct hfs_cat_file));
437                 hfs_inode_write_fork(inode, rec.file.RExtRec,
438                                      &rec.file.RLgLen, &rec.file.RPyLen);
439                 hfs_bnode_write(fd.bnode, &rec, fd.entryoffset,
440                                 sizeof(struct hfs_cat_file));
441         } else {
442                 if (fd.entrylength < sizeof(struct hfs_cat_file))
443                         /* panic? */;
444                 hfs_bnode_read(fd.bnode, &rec, fd.entryoffset,
445                            sizeof(struct hfs_cat_file));
446                 if (rec.type != HFS_CDR_FIL ||
447                     be32_to_cpu(rec.file.FlNum) != inode->i_ino) {
448                 }
449
450                 if (inode->i_mode & S_IWUSR)
451                         rec.file.Flags &= ~HFS_FIL_LOCK;
452                 else
453                         rec.file.Flags |= HFS_FIL_LOCK;
454                 hfs_inode_write_fork(inode, rec.file.ExtRec, &rec.file.LgLen, &rec.file.PyLen);
455                 rec.file.MdDat = hfs_u_to_mtime(inode->i_mtime);
456
457                 hfs_bnode_write(fd.bnode, &rec, fd.entryoffset,
458                             sizeof(struct hfs_cat_file));
459         }
460 out:
461         hfs_find_exit(&fd);
462         return 0;
463 }
464
465 static struct dentry *hfs_file_lookup(struct inode *dir, struct dentry *dentry,
466                                       struct nameidata *nd)
467 {
468         struct inode *inode = NULL;
469         hfs_cat_rec rec;
470         struct hfs_find_data fd;
471         int res;
472
473         if (HFS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
474                 goto out;
475
476         inode = HFS_I(dir)->rsrc_inode;
477         if (inode)
478                 goto out;
479
480         inode = new_inode(dir->i_sb);
481         if (!inode)
482                 return ERR_PTR(-ENOMEM);
483
484         hfs_find_init(HFS_SB(dir->i_sb)->cat_tree, &fd);
485         fd.search_key->cat = HFS_I(dir)->cat_key;
486         res = hfs_brec_read(&fd, &rec, sizeof(rec));
487         if (!res) {
488                 struct hfs_iget_data idata = { NULL, &rec };
489                 hfs_read_inode(inode, &idata);
490         }
491         hfs_find_exit(&fd);
492         if (res) {
493                 iput(inode);
494                 return ERR_PTR(res);
495         }
496         HFS_I(inode)->rsrc_inode = dir;
497         HFS_I(dir)->rsrc_inode = inode;
498         igrab(dir);
499         hlist_add_head(&inode->i_hash, &HFS_SB(dir->i_sb)->rsrc_inodes);
500         mark_inode_dirty(inode);
501 out:
502         d_add(dentry, inode);
503         return NULL;
504 }
505
506 void hfs_clear_inode(struct inode *inode)
507 {
508         if (HFS_IS_RSRC(inode) && HFS_I(inode)->rsrc_inode) {
509                 HFS_I(HFS_I(inode)->rsrc_inode)->rsrc_inode = NULL;
510                 iput(HFS_I(inode)->rsrc_inode);
511         }
512 }
513
514 static int hfs_permission(struct inode *inode, int mask)
515 {
516         if (S_ISREG(inode->i_mode) && mask & MAY_EXEC)
517                 return 0;
518         return generic_permission(inode, mask, NULL);
519 }
520
521 static int hfs_file_open(struct inode *inode, struct file *file)
522 {
523         if (HFS_IS_RSRC(inode))
524                 inode = HFS_I(inode)->rsrc_inode;
525         if (atomic_read(&file->f_count) != 1)
526                 return 0;
527         atomic_inc(&HFS_I(inode)->opencnt);
528         return 0;
529 }
530
531 static int hfs_file_release(struct inode *inode, struct file *file)
532 {
533         //struct super_block *sb = inode->i_sb;
534
535         if (HFS_IS_RSRC(inode))
536                 inode = HFS_I(inode)->rsrc_inode;
537         if (atomic_read(&file->f_count) != 0)
538                 return 0;
539         if (atomic_dec_and_test(&HFS_I(inode)->opencnt)) {
540                 mutex_lock(&inode->i_mutex);
541                 hfs_file_truncate(inode);
542                 //if (inode->i_flags & S_DEAD) {
543                 //      hfs_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL);
544                 //      hfs_delete_inode(inode);
545                 //}
546                 mutex_unlock(&inode->i_mutex);
547         }
548         return 0;
549 }
550
551 /*
552  * hfs_notify_change()
553  *
554  * Based very closely on fs/msdos/inode.c by Werner Almesberger
555  *
556  * This is the notify_change() field in the super_operations structure
557  * for HFS file systems.  The purpose is to take that changes made to
558  * an inode and apply then in a filesystem-dependent manner.  In this
559  * case the process has a few of tasks to do:
560  *  1) prevent changes to the i_uid and i_gid fields.
561  *  2) map file permissions to the closest allowable permissions
562  *  3) Since multiple Linux files can share the same on-disk inode under
563  *     HFS (for instance the data and resource forks of a file) a change
564  *     to permissions must be applied to all other in-core inodes which
565  *     correspond to the same HFS file.
566  */
567
568 int hfs_inode_setattr(struct dentry *dentry, struct iattr * attr)
569 {
570         struct inode *inode = dentry->d_inode;
571         struct hfs_sb_info *hsb = HFS_SB(inode->i_sb);
572         int error;
573
574         error = inode_change_ok(inode, attr); /* basic permission checks */
575         if (error)
576                 return error;
577
578         /* no uig/gid changes and limit which mode bits can be set */
579         if (((attr->ia_valid & ATTR_UID) &&
580              (attr->ia_uid != hsb->s_uid)) ||
581             ((attr->ia_valid & ATTR_GID) &&
582              (attr->ia_gid != hsb->s_gid)) ||
583             ((attr->ia_valid & ATTR_MODE) &&
584              ((S_ISDIR(inode->i_mode) &&
585                (attr->ia_mode != inode->i_mode)) ||
586               (attr->ia_mode & ~HFS_VALID_MODE_BITS)))) {
587                 return hsb->s_quiet ? 0 : error;
588         }
589
590         if (attr->ia_valid & ATTR_MODE) {
591                 /* Only the 'w' bits can ever change and only all together. */
592                 if (attr->ia_mode & S_IWUSR)
593                         attr->ia_mode = inode->i_mode | S_IWUGO;
594                 else
595                         attr->ia_mode = inode->i_mode & ~S_IWUGO;
596                 attr->ia_mode &= S_ISDIR(inode->i_mode) ? ~hsb->s_dir_umask: ~hsb->s_file_umask;
597         }
598         error = inode_setattr(inode, attr);
599         if (error)
600                 return error;
601
602         return 0;
603 }
604
605
606 static const struct file_operations hfs_file_operations = {
607         .llseek         = generic_file_llseek,
608         .read           = do_sync_read,
609         .aio_read       = generic_file_aio_read,
610         .write          = do_sync_write,
611         .aio_write      = generic_file_aio_write,
612         .mmap           = generic_file_mmap,
613         .splice_read    = generic_file_splice_read,
614         .fsync          = file_fsync,
615         .open           = hfs_file_open,
616         .release        = hfs_file_release,
617 };
618
619 static const struct inode_operations hfs_file_inode_operations = {
620         .lookup         = hfs_file_lookup,
621         .truncate       = hfs_file_truncate,
622         .setattr        = hfs_inode_setattr,
623         .permission     = hfs_permission,
624         .setxattr       = hfs_setxattr,
625         .getxattr       = hfs_getxattr,
626         .listxattr      = hfs_listxattr,
627 };