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[PATCH] Make most file operations structs in fs/ const
[deliverable/linux.git] / fs / hfs / inode.c
CommitLineData
1da177e4
LT		 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>
1da177e4
LT		 15#include <linux/mpage.h>
16
17#include "hfs_fs.h"
18#include "btree.h"
19
4b6f5d20 20static const struct file_operations hfs_file_operations;
1da177e4
LT		 21static 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
27static int hfs_writepage(struct page *page, struct writeback_control *wbc)
28{
29 return block_write_full_page(page, hfs_get_block, wbc);
30}
31
32static int hfs_readpage(struct file *file, struct page *page)
33{
34 return block_read_full_page(page, hfs_get_block);
35}
36
37static 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
43static sector_t hfs_bmap(struct address_space *mapping, sector_t block)
44{
45 return generic_block_bmap(mapping, block, hfs_get_block);
46}
47
27496a8c 48static int hfs_releasepage(struct page *page, gfp_t mask)
1da177e4
LT		 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 }
1da177e4
LT		 98 return res ? try_to_free_buffers(page) : 0;
99}
100
1da177e4
LT		 101static 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,
1d8fa7a2 108 offset, nr_segs, hfs_get_block, NULL);
1da177e4
LT		 109}
110
111static int hfs_writepages(struct address_space *mapping,
112 struct writeback_control *wbc)
113{
114 return mpage_writepages(mapping, wbc, hfs_get_block);
115}
116
117struct 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
127struct 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 */
141struct 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);
328b9227 150 hfs_cat_build_key(sb, (btree_key *)&HFS_I(inode)->cat_key, dir->i_ino, name);
1da177e4
LT		 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 inode->i_blksize = HFS_SB(sb)->alloc_blksz;
158 HFS_I(inode)->flags = 0;
159 HFS_I(inode)->rsrc_inode = NULL;
160 HFS_I(inode)->fs_blocks = 0;
161 if (S_ISDIR(mode)) {
162 inode->i_size = 2;
163 HFS_SB(sb)->folder_count++;
164 if (dir->i_ino == HFS_ROOT_CNID)
165 HFS_SB(sb)->root_dirs++;
166 inode->i_op = &hfs_dir_inode_operations;
167 inode->i_fop = &hfs_dir_operations;
168 inode->i_mode |= S_IRWXUGO;
169 inode->i_mode &= ~HFS_SB(inode->i_sb)->s_dir_umask;
170 } else if (S_ISREG(mode)) {
171 HFS_I(inode)->clump_blocks = HFS_SB(sb)->clumpablks;
172 HFS_SB(sb)->file_count++;
173 if (dir->i_ino == HFS_ROOT_CNID)
174 HFS_SB(sb)->root_files++;
175 inode->i_op = &hfs_file_inode_operations;
176 inode->i_fop = &hfs_file_operations;
177 inode->i_mapping->a_ops = &hfs_aops;
178 inode->i_mode |= S_IRUGO|S_IXUGO;
179 if (mode & S_IWUSR)
180 inode->i_mode |= S_IWUGO;
181 inode->i_mode &= ~HFS_SB(inode->i_sb)->s_file_umask;
182 HFS_I(inode)->phys_size = 0;
183 HFS_I(inode)->alloc_blocks = 0;
184 HFS_I(inode)->first_blocks = 0;
185 HFS_I(inode)->cached_start = 0;
186 HFS_I(inode)->cached_blocks = 0;
187 memset(HFS_I(inode)->first_extents, 0, sizeof(hfs_extent_rec));
188 memset(HFS_I(inode)->cached_extents, 0, sizeof(hfs_extent_rec));
189 }
190 insert_inode_hash(inode);
191 mark_inode_dirty(inode);
192 set_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags);
193 sb->s_dirt = 1;
194
195 return inode;
196}
197
198void hfs_delete_inode(struct inode *inode)
199{
200 struct super_block *sb = inode->i_sb;
201
202 dprint(DBG_INODE, "delete_inode: %lu\n", inode->i_ino);
203 if (S_ISDIR(inode->i_mode)) {
204 HFS_SB(sb)->folder_count--;
205 if (HFS_I(inode)->cat_key.ParID == cpu_to_be32(HFS_ROOT_CNID))
206 HFS_SB(sb)->root_dirs--;
207 set_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags);
208 sb->s_dirt = 1;
209 return;
210 }
211 HFS_SB(sb)->file_count--;
212 if (HFS_I(inode)->cat_key.ParID == cpu_to_be32(HFS_ROOT_CNID))
213 HFS_SB(sb)->root_files--;
214 if (S_ISREG(inode->i_mode)) {
215 if (!inode->i_nlink) {
216 inode->i_size = 0;
217 hfs_file_truncate(inode);
218 }
219 }
220 set_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags);
221 sb->s_dirt = 1;
222}
223
224void hfs_inode_read_fork(struct inode *inode, struct hfs_extent *ext,
225 __be32 __log_size, __be32 phys_size, u32 clump_size)
226{
227 struct super_block *sb = inode->i_sb;
228 u32 log_size = be32_to_cpu(__log_size);
229 u16 count;
230 int i;
231
232 memcpy(HFS_I(inode)->first_extents, ext, sizeof(hfs_extent_rec));
233 for (count = 0, i = 0; i < 3; i++)
234 count += be16_to_cpu(ext[i].count);
235 HFS_I(inode)->first_blocks = count;
236
237 inode->i_size = HFS_I(inode)->phys_size = log_size;
238 HFS_I(inode)->fs_blocks = (log_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
239 inode_set_bytes(inode, HFS_I(inode)->fs_blocks << sb->s_blocksize_bits);
240 HFS_I(inode)->alloc_blocks = be32_to_cpu(phys_size) /
241 HFS_SB(sb)->alloc_blksz;
242 HFS_I(inode)->clump_blocks = clump_size / HFS_SB(sb)->alloc_blksz;
243 if (!HFS_I(inode)->clump_blocks)
244 HFS_I(inode)->clump_blocks = HFS_SB(sb)->clumpablks;
245}
246
247struct hfs_iget_data {
248 struct hfs_cat_key *key;
249 hfs_cat_rec *rec;
250};
251
252static int hfs_test_inode(struct inode *inode, void *data)
253{
254 struct hfs_iget_data *idata = data;
255 hfs_cat_rec *rec;
256
257 rec = idata->rec;
258 switch (rec->type) {
259 case HFS_CDR_DIR:
260 return inode->i_ino == be32_to_cpu(rec->dir.DirID);
261 case HFS_CDR_FIL:
262 return inode->i_ino == be32_to_cpu(rec->file.FlNum);
263 default:
264 BUG();
265 return 1;
266 }
267}
268
269/*
270 * hfs_read_inode
271 */
272static int hfs_read_inode(struct inode *inode, void *data)
273{
274 struct hfs_iget_data *idata = data;
275 struct hfs_sb_info *hsb = HFS_SB(inode->i_sb);
276 hfs_cat_rec *rec;
277
278 HFS_I(inode)->flags = 0;
279 HFS_I(inode)->rsrc_inode = NULL;
280 init_MUTEX(&HFS_I(inode)->extents_lock);
281 INIT_LIST_HEAD(&HFS_I(inode)->open_dir_list);
282
283 /* Initialize the inode */
284 inode->i_uid = hsb->s_uid;
285 inode->i_gid = hsb->s_gid;
286 inode->i_nlink = 1;
287 inode->i_blksize = HFS_SB(inode->i_sb)->alloc_blksz;
288
289 if (idata->key)
290 HFS_I(inode)->cat_key = *idata->key;
291 else
292 HFS_I(inode)->flags |= HFS_FLG_RSRC;
293 HFS_I(inode)->tz_secondswest = sys_tz.tz_minuteswest * 60;
294
295 rec = idata->rec;
296 switch (rec->type) {
297 case HFS_CDR_FIL:
298 if (!HFS_IS_RSRC(inode)) {
299 hfs_inode_read_fork(inode, rec->file.ExtRec, rec->file.LgLen,
300 rec->file.PyLen, be16_to_cpu(rec->file.ClpSize));
301 } else {
302 hfs_inode_read_fork(inode, rec->file.RExtRec, rec->file.RLgLen,
303 rec->file.RPyLen, be16_to_cpu(rec->file.ClpSize));
304 }
305
306 inode->i_ino = be32_to_cpu(rec->file.FlNum);
307 inode->i_mode = S_IRUGO | S_IXUGO;
308 if (!(rec->file.Flags & HFS_FIL_LOCK))
309 inode->i_mode |= S_IWUGO;
310 inode->i_mode &= ~hsb->s_file_umask;
311 inode->i_mode |= S_IFREG;
312 inode->i_ctime = inode->i_atime = inode->i_mtime =
313 hfs_m_to_utime(rec->file.MdDat);
314 inode->i_op = &hfs_file_inode_operations;
315 inode->i_fop = &hfs_file_operations;
316 inode->i_mapping->a_ops = &hfs_aops;
317 break;
318 case HFS_CDR_DIR:
319 inode->i_ino = be32_to_cpu(rec->dir.DirID);
320 inode->i_size = be16_to_cpu(rec->dir.Val) + 2;
321 HFS_I(inode)->fs_blocks = 0;
322 inode->i_mode = S_IFDIR | (S_IRWXUGO & ~hsb->s_dir_umask);
323 inode->i_ctime = inode->i_atime = inode->i_mtime =
324 hfs_m_to_utime(rec->dir.MdDat);
325 inode->i_op = &hfs_dir_inode_operations;
326 inode->i_fop = &hfs_dir_operations;
327 break;
328 default:
329 make_bad_inode(inode);
330 }
331 return 0;
332}
333
334/*
335 * __hfs_iget()
336 *
337 * Given the MDB for a HFS filesystem, a 'key' and an 'entry' in
338 * the catalog B-tree and the 'type' of the desired file return the
339 * inode for that file/directory or NULL. Note that 'type' indicates
340 * whether we want the actual file or directory, or the corresponding
341 * metadata (AppleDouble header file or CAP metadata file).
342 */
343struct inode *hfs_iget(struct super_block *sb, struct hfs_cat_key *key, hfs_cat_rec *rec)
344{
345 struct hfs_iget_data data = { key, rec };
346 struct inode *inode;
347 u32 cnid;
348
349 switch (rec->type) {
350 case HFS_CDR_DIR:
351 cnid = be32_to_cpu(rec->dir.DirID);
352 break;
353 case HFS_CDR_FIL:
354 cnid = be32_to_cpu(rec->file.FlNum);
355 break;
356 default:
357 return NULL;
358 }
359 inode = iget5_locked(sb, cnid, hfs_test_inode, hfs_read_inode, &data);
360 if (inode && (inode->i_state & I_NEW))
361 unlock_new_inode(inode);
362 return inode;
363}
364
365void hfs_inode_write_fork(struct inode *inode, struct hfs_extent *ext,
366 __be32 *log_size, __be32 *phys_size)
367{
368 memcpy(ext, HFS_I(inode)->first_extents, sizeof(hfs_extent_rec));
369
370 if (log_size)
371 *log_size = cpu_to_be32(inode->i_size);
372 if (phys_size)
373 *phys_size = cpu_to_be32(HFS_I(inode)->alloc_blocks *
374 HFS_SB(inode->i_sb)->alloc_blksz);
375}
376
377int hfs_write_inode(struct inode *inode, int unused)
378{
379 struct inode *main_inode = inode;
380 struct hfs_find_data fd;
381 hfs_cat_rec rec;
382
383 dprint(DBG_INODE, "hfs_write_inode: %lu\n", inode->i_ino);
384 hfs_ext_write_extent(inode);
385
386 if (inode->i_ino < HFS_FIRSTUSER_CNID) {
387 switch (inode->i_ino) {
388 case HFS_ROOT_CNID:
389 break;
390 case HFS_EXT_CNID:
391 hfs_btree_write(HFS_SB(inode->i_sb)->ext_tree);
392 return 0;
393 case HFS_CAT_CNID:
394 hfs_btree_write(HFS_SB(inode->i_sb)->cat_tree);
395 return 0;
396 default:
397 BUG();
398 return -EIO;
399 }
400 }
401
402 if (HFS_IS_RSRC(inode))
403 main_inode = HFS_I(inode)->rsrc_inode;
404
405 if (!main_inode->i_nlink)
406 return 0;
407
408 if (hfs_find_init(HFS_SB(main_inode->i_sb)->cat_tree, &fd))
409 /* panic? */
410 return -EIO;
411
412 fd.search_key->cat = HFS_I(main_inode)->cat_key;
413 if (hfs_brec_find(&fd))
414 /* panic? */
415 goto out;
416
417 if (S_ISDIR(main_inode->i_mode)) {
418 if (fd.entrylength < sizeof(struct hfs_cat_dir))
419 /* panic? */;
420 hfs_bnode_read(fd.bnode, &rec, fd.entryoffset,
421 sizeof(struct hfs_cat_dir));
422 if (rec.type != HFS_CDR_DIR ||
423 be32_to_cpu(rec.dir.DirID) != inode->i_ino) {
424 }
425
426 rec.dir.MdDat = hfs_u_to_mtime(inode->i_mtime);
427 rec.dir.Val = cpu_to_be16(inode->i_size - 2);
428
429 hfs_bnode_write(fd.bnode, &rec, fd.entryoffset,
430 sizeof(struct hfs_cat_dir));
431 } else if (HFS_IS_RSRC(inode)) {
432 hfs_bnode_read(fd.bnode, &rec, fd.entryoffset,
433 sizeof(struct hfs_cat_file));
434 hfs_inode_write_fork(inode, rec.file.RExtRec,
435 &rec.file.RLgLen, &rec.file.RPyLen);
436 hfs_bnode_write(fd.bnode, &rec, fd.entryoffset,
437 sizeof(struct hfs_cat_file));
438 } else {
439 if (fd.entrylength < sizeof(struct hfs_cat_file))
440 /* panic? */;
441 hfs_bnode_read(fd.bnode, &rec, fd.entryoffset,
442 sizeof(struct hfs_cat_file));
443 if (rec.type != HFS_CDR_FIL ||
444 be32_to_cpu(rec.file.FlNum) != inode->i_ino) {
445 }
446
447 if (inode->i_mode & S_IWUSR)
448 rec.file.Flags &= ~HFS_FIL_LOCK;
449 else
450 rec.file.Flags |= HFS_FIL_LOCK;
451 hfs_inode_write_fork(inode, rec.file.ExtRec, &rec.file.LgLen, &rec.file.PyLen);
452 rec.file.MdDat = hfs_u_to_mtime(inode->i_mtime);
453
454 hfs_bnode_write(fd.bnode, &rec, fd.entryoffset,
455 sizeof(struct hfs_cat_file));
456 }
457out:
458 hfs_find_exit(&fd);
459 return 0;
460}
461
462static struct dentry *hfs_file_lookup(struct inode *dir, struct dentry *dentry,
463 struct nameidata *nd)
464{
465 struct inode *inode = NULL;
466 hfs_cat_rec rec;
467 struct hfs_find_data fd;
468 int res;
469
470 if (HFS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
471 goto out;
472
473 inode = HFS_I(dir)->rsrc_inode;
474 if (inode)
475 goto out;
476
477 inode = new_inode(dir->i_sb);
478 if (!inode)
479 return ERR_PTR(-ENOMEM);
480
481 hfs_find_init(HFS_SB(dir->i_sb)->cat_tree, &fd);
482 fd.search_key->cat = HFS_I(dir)->cat_key;
483 res = hfs_brec_read(&fd, &rec, sizeof(rec));
484 if (!res) {
485 struct hfs_iget_data idata = { NULL, &rec };
486 hfs_read_inode(inode, &idata);
487 }
488 hfs_find_exit(&fd);
489 if (res) {
490 iput(inode);
491 return ERR_PTR(res);
492 }
493 HFS_I(inode)->rsrc_inode = dir;
494 HFS_I(dir)->rsrc_inode = inode;
495 igrab(dir);
496 hlist_add_head(&inode->i_hash, &HFS_SB(dir->i_sb)->rsrc_inodes);
497 mark_inode_dirty(inode);
498out:
499 d_add(dentry, inode);
500 return NULL;
501}
502
503void hfs_clear_inode(struct inode *inode)
504{
505 if (HFS_IS_RSRC(inode) && HFS_I(inode)->rsrc_inode) {
506 HFS_I(HFS_I(inode)->rsrc_inode)->rsrc_inode = NULL;
507 iput(HFS_I(inode)->rsrc_inode);
508 }
509}
510
511static int hfs_permission(struct inode *inode, int mask,
512 struct nameidata *nd)
513{
514 if (S_ISREG(inode->i_mode) && mask & MAY_EXEC)
515 return 0;
516 return generic_permission(inode, mask, NULL);
517}
518
519static int hfs_file_open(struct inode *inode, struct file *file)
520{
521 if (HFS_IS_RSRC(inode))
522 inode = HFS_I(inode)->rsrc_inode;
523 if (atomic_read(&file->f_count) != 1)
524 return 0;
525 atomic_inc(&HFS_I(inode)->opencnt);
526 return 0;
527}
528
529static int hfs_file_release(struct inode *inode, struct file *file)
530{
531 //struct super_block *sb = inode->i_sb;
532
533 if (HFS_IS_RSRC(inode))
534 inode = HFS_I(inode)->rsrc_inode;
535 if (atomic_read(&file->f_count) != 0)
536 return 0;
537 if (atomic_dec_and_test(&HFS_I(inode)->opencnt)) {
1b1dcc1b 538 mutex_lock(&inode->i_mutex);
1da177e4
LT		 539 hfs_file_truncate(inode);
540 //if (inode->i_flags & S_DEAD) {
541 // hfs_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL);
542 // hfs_delete_inode(inode);
543 //}
1b1dcc1b 544 mutex_unlock(&inode->i_mutex);
1da177e4
LT		 545 }
546 return 0;
547}
548
549/*
550 * hfs_notify_change()
551 *
552 * Based very closely on fs/msdos/inode.c by Werner Almesberger
553 *
554 * This is the notify_change() field in the super_operations structure
555 * for HFS file systems. The purpose is to take that changes made to
556 * an inode and apply then in a filesystem-dependent manner. In this
557 * case the process has a few of tasks to do:
558 * 1) prevent changes to the i_uid and i_gid fields.
559 * 2) map file permissions to the closest allowable permissions
560 * 3) Since multiple Linux files can share the same on-disk inode under
561 * HFS (for instance the data and resource forks of a file) a change
562 * to permissions must be applied to all other in-core inodes which
563 * correspond to the same HFS file.
564 */
565
566int hfs_inode_setattr(struct dentry *dentry, struct iattr * attr)
567{
568 struct inode *inode = dentry->d_inode;
569 struct hfs_sb_info *hsb = HFS_SB(inode->i_sb);
570 int error;
571
572 error = inode_change_ok(inode, attr); /* basic permission checks */
573 if (error)
574 return error;
575
576 /* no uig/gid changes and limit which mode bits can be set */
577 if (((attr->ia_valid & ATTR_UID) &&
578 (attr->ia_uid != hsb->s_uid)) ||
579 ((attr->ia_valid & ATTR_GID) &&
580 (attr->ia_gid != hsb->s_gid)) ||
581 ((attr->ia_valid & ATTR_MODE) &&
582 ((S_ISDIR(inode->i_mode) &&
583 (attr->ia_mode != inode->i_mode)) ||
584 (attr->ia_mode & ~HFS_VALID_MODE_BITS)))) {
585 return hsb->s_quiet ? 0 : error;
586 }
587
588 if (attr->ia_valid & ATTR_MODE) {
589 /* Only the 'w' bits can ever change and only all together. */
590 if (attr->ia_mode & S_IWUSR)
591 attr->ia_mode = inode->i_mode | S_IWUGO;
592 else
593 attr->ia_mode = inode->i_mode & ~S_IWUGO;
594 attr->ia_mode &= S_ISDIR(inode->i_mode) ? ~hsb->s_dir_umask: ~hsb->s_file_umask;
595 }
596 error = inode_setattr(inode, attr);
597 if (error)
598 return error;
599
600 return 0;
601}
602
603
4b6f5d20 604static const struct file_operations hfs_file_operations = {
1da177e4
LT		 605 .llseek = generic_file_llseek,
606 .read = generic_file_read,
607 .write = generic_file_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
615static 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};
Linux kernel - Deliverables
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