Merge remote-tracking branch 'spi/for-5.14' into spi-linus
[linux-2.6-microblaze.git] / fs / hfsplus / inode.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  *  linux/fs/hfsplus/inode.c
4  *
5  * Copyright (C) 2001
6  * Brad Boyer (flar@allandria.com)
7  * (C) 2003 Ardis Technologies <roman@ardistech.com>
8  *
9  * Inode handling routines
10  */
11
12 #include <linux/blkdev.h>
13 #include <linux/mm.h>
14 #include <linux/fs.h>
15 #include <linux/pagemap.h>
16 #include <linux/mpage.h>
17 #include <linux/sched.h>
18 #include <linux/cred.h>
19 #include <linux/uio.h>
20 #include <linux/fileattr.h>
21
22 #include "hfsplus_fs.h"
23 #include "hfsplus_raw.h"
24 #include "xattr.h"
25
26 static int hfsplus_readpage(struct file *file, struct page *page)
27 {
28         return block_read_full_page(page, hfsplus_get_block);
29 }
30
31 static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
32 {
33         return block_write_full_page(page, hfsplus_get_block, wbc);
34 }
35
36 static void hfsplus_write_failed(struct address_space *mapping, loff_t to)
37 {
38         struct inode *inode = mapping->host;
39
40         if (to > inode->i_size) {
41                 truncate_pagecache(inode, inode->i_size);
42                 hfsplus_file_truncate(inode);
43         }
44 }
45
46 static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
47                         loff_t pos, unsigned len, unsigned flags,
48                         struct page **pagep, void **fsdata)
49 {
50         int ret;
51
52         *pagep = NULL;
53         ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
54                                 hfsplus_get_block,
55                                 &HFSPLUS_I(mapping->host)->phys_size);
56         if (unlikely(ret))
57                 hfsplus_write_failed(mapping, pos + len);
58
59         return ret;
60 }
61
62 static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
63 {
64         return generic_block_bmap(mapping, block, hfsplus_get_block);
65 }
66
67 static int hfsplus_releasepage(struct page *page, gfp_t mask)
68 {
69         struct inode *inode = page->mapping->host;
70         struct super_block *sb = inode->i_sb;
71         struct hfs_btree *tree;
72         struct hfs_bnode *node;
73         u32 nidx;
74         int i, res = 1;
75
76         switch (inode->i_ino) {
77         case HFSPLUS_EXT_CNID:
78                 tree = HFSPLUS_SB(sb)->ext_tree;
79                 break;
80         case HFSPLUS_CAT_CNID:
81                 tree = HFSPLUS_SB(sb)->cat_tree;
82                 break;
83         case HFSPLUS_ATTR_CNID:
84                 tree = HFSPLUS_SB(sb)->attr_tree;
85                 break;
86         default:
87                 BUG();
88                 return 0;
89         }
90         if (!tree)
91                 return 0;
92         if (tree->node_size >= PAGE_SIZE) {
93                 nidx = page->index >>
94                         (tree->node_size_shift - PAGE_SHIFT);
95                 spin_lock(&tree->hash_lock);
96                 node = hfs_bnode_findhash(tree, nidx);
97                 if (!node)
98                         ;
99                 else if (atomic_read(&node->refcnt))
100                         res = 0;
101                 if (res && node) {
102                         hfs_bnode_unhash(node);
103                         hfs_bnode_free(node);
104                 }
105                 spin_unlock(&tree->hash_lock);
106         } else {
107                 nidx = page->index <<
108                         (PAGE_SHIFT - tree->node_size_shift);
109                 i = 1 << (PAGE_SHIFT - tree->node_size_shift);
110                 spin_lock(&tree->hash_lock);
111                 do {
112                         node = hfs_bnode_findhash(tree, nidx++);
113                         if (!node)
114                                 continue;
115                         if (atomic_read(&node->refcnt)) {
116                                 res = 0;
117                                 break;
118                         }
119                         hfs_bnode_unhash(node);
120                         hfs_bnode_free(node);
121                 } while (--i && nidx < tree->node_count);
122                 spin_unlock(&tree->hash_lock);
123         }
124         return res ? try_to_free_buffers(page) : 0;
125 }
126
127 static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
128 {
129         struct file *file = iocb->ki_filp;
130         struct address_space *mapping = file->f_mapping;
131         struct inode *inode = mapping->host;
132         size_t count = iov_iter_count(iter);
133         ssize_t ret;
134
135         ret = blockdev_direct_IO(iocb, inode, iter, hfsplus_get_block);
136
137         /*
138          * In case of error extending write may have instantiated a few
139          * blocks outside i_size. Trim these off again.
140          */
141         if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) {
142                 loff_t isize = i_size_read(inode);
143                 loff_t end = iocb->ki_pos + count;
144
145                 if (end > isize)
146                         hfsplus_write_failed(mapping, end);
147         }
148
149         return ret;
150 }
151
152 static int hfsplus_writepages(struct address_space *mapping,
153                               struct writeback_control *wbc)
154 {
155         return mpage_writepages(mapping, wbc, hfsplus_get_block);
156 }
157
158 const struct address_space_operations hfsplus_btree_aops = {
159         .set_page_dirty = __set_page_dirty_buffers,
160         .readpage       = hfsplus_readpage,
161         .writepage      = hfsplus_writepage,
162         .write_begin    = hfsplus_write_begin,
163         .write_end      = generic_write_end,
164         .bmap           = hfsplus_bmap,
165         .releasepage    = hfsplus_releasepage,
166 };
167
168 const struct address_space_operations hfsplus_aops = {
169         .set_page_dirty = __set_page_dirty_buffers,
170         .readpage       = hfsplus_readpage,
171         .writepage      = hfsplus_writepage,
172         .write_begin    = hfsplus_write_begin,
173         .write_end      = generic_write_end,
174         .bmap           = hfsplus_bmap,
175         .direct_IO      = hfsplus_direct_IO,
176         .writepages     = hfsplus_writepages,
177 };
178
179 const struct dentry_operations hfsplus_dentry_operations = {
180         .d_hash       = hfsplus_hash_dentry,
181         .d_compare    = hfsplus_compare_dentry,
182 };
183
184 static void hfsplus_get_perms(struct inode *inode,
185                 struct hfsplus_perm *perms, int dir)
186 {
187         struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
188         u16 mode;
189
190         mode = be16_to_cpu(perms->mode);
191
192         i_uid_write(inode, be32_to_cpu(perms->owner));
193         if (!i_uid_read(inode) && !mode)
194                 inode->i_uid = sbi->uid;
195
196         i_gid_write(inode, be32_to_cpu(perms->group));
197         if (!i_gid_read(inode) && !mode)
198                 inode->i_gid = sbi->gid;
199
200         if (dir) {
201                 mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
202                 mode |= S_IFDIR;
203         } else if (!mode)
204                 mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
205         inode->i_mode = mode;
206
207         HFSPLUS_I(inode)->userflags = perms->userflags;
208         if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
209                 inode->i_flags |= S_IMMUTABLE;
210         else
211                 inode->i_flags &= ~S_IMMUTABLE;
212         if (perms->rootflags & HFSPLUS_FLG_APPEND)
213                 inode->i_flags |= S_APPEND;
214         else
215                 inode->i_flags &= ~S_APPEND;
216 }
217
218 static int hfsplus_file_open(struct inode *inode, struct file *file)
219 {
220         if (HFSPLUS_IS_RSRC(inode))
221                 inode = HFSPLUS_I(inode)->rsrc_inode;
222         if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
223                 return -EOVERFLOW;
224         atomic_inc(&HFSPLUS_I(inode)->opencnt);
225         return 0;
226 }
227
228 static int hfsplus_file_release(struct inode *inode, struct file *file)
229 {
230         struct super_block *sb = inode->i_sb;
231
232         if (HFSPLUS_IS_RSRC(inode))
233                 inode = HFSPLUS_I(inode)->rsrc_inode;
234         if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
235                 inode_lock(inode);
236                 hfsplus_file_truncate(inode);
237                 if (inode->i_flags & S_DEAD) {
238                         hfsplus_delete_cat(inode->i_ino,
239                                            HFSPLUS_SB(sb)->hidden_dir, NULL);
240                         hfsplus_delete_inode(inode);
241                 }
242                 inode_unlock(inode);
243         }
244         return 0;
245 }
246
247 static int hfsplus_setattr(struct user_namespace *mnt_userns,
248                            struct dentry *dentry, struct iattr *attr)
249 {
250         struct inode *inode = d_inode(dentry);
251         int error;
252
253         error = setattr_prepare(&init_user_ns, dentry, attr);
254         if (error)
255                 return error;
256
257         if ((attr->ia_valid & ATTR_SIZE) &&
258             attr->ia_size != i_size_read(inode)) {
259                 inode_dio_wait(inode);
260                 if (attr->ia_size > inode->i_size) {
261                         error = generic_cont_expand_simple(inode,
262                                                            attr->ia_size);
263                         if (error)
264                                 return error;
265                 }
266                 truncate_setsize(inode, attr->ia_size);
267                 hfsplus_file_truncate(inode);
268                 inode->i_mtime = inode->i_ctime = current_time(inode);
269         }
270
271         setattr_copy(&init_user_ns, inode, attr);
272         mark_inode_dirty(inode);
273
274         return 0;
275 }
276
277 int hfsplus_getattr(struct user_namespace *mnt_userns, const struct path *path,
278                     struct kstat *stat, u32 request_mask,
279                     unsigned int query_flags)
280 {
281         struct inode *inode = d_inode(path->dentry);
282         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
283
284         if (request_mask & STATX_BTIME) {
285                 stat->result_mask |= STATX_BTIME;
286                 stat->btime = hfsp_mt2ut(hip->create_date);
287         }
288
289         if (inode->i_flags & S_APPEND)
290                 stat->attributes |= STATX_ATTR_APPEND;
291         if (inode->i_flags & S_IMMUTABLE)
292                 stat->attributes |= STATX_ATTR_IMMUTABLE;
293         if (hip->userflags & HFSPLUS_FLG_NODUMP)
294                 stat->attributes |= STATX_ATTR_NODUMP;
295
296         stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE |
297                                  STATX_ATTR_NODUMP;
298
299         generic_fillattr(&init_user_ns, inode, stat);
300         return 0;
301 }
302
303 int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
304                        int datasync)
305 {
306         struct inode *inode = file->f_mapping->host;
307         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
308         struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
309         int error = 0, error2;
310
311         error = file_write_and_wait_range(file, start, end);
312         if (error)
313                 return error;
314         inode_lock(inode);
315
316         /*
317          * Sync inode metadata into the catalog and extent trees.
318          */
319         sync_inode_metadata(inode, 1);
320
321         /*
322          * And explicitly write out the btrees.
323          */
324         if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags))
325                 error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
326
327         if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) {
328                 error2 =
329                         filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
330                 if (!error)
331                         error = error2;
332         }
333
334         if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) {
335                 if (sbi->attr_tree) {
336                         error2 =
337                                 filemap_write_and_wait(
338                                             sbi->attr_tree->inode->i_mapping);
339                         if (!error)
340                                 error = error2;
341                 } else {
342                         pr_err("sync non-existent attributes tree\n");
343                 }
344         }
345
346         if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) {
347                 error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
348                 if (!error)
349                         error = error2;
350         }
351
352         if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
353                 blkdev_issue_flush(inode->i_sb->s_bdev);
354
355         inode_unlock(inode);
356
357         return error;
358 }
359
360 static const struct inode_operations hfsplus_file_inode_operations = {
361         .setattr        = hfsplus_setattr,
362         .getattr        = hfsplus_getattr,
363         .listxattr      = hfsplus_listxattr,
364         .fileattr_get   = hfsplus_fileattr_get,
365         .fileattr_set   = hfsplus_fileattr_set,
366 };
367
368 static const struct file_operations hfsplus_file_operations = {
369         .llseek         = generic_file_llseek,
370         .read_iter      = generic_file_read_iter,
371         .write_iter     = generic_file_write_iter,
372         .mmap           = generic_file_mmap,
373         .splice_read    = generic_file_splice_read,
374         .fsync          = hfsplus_file_fsync,
375         .open           = hfsplus_file_open,
376         .release        = hfsplus_file_release,
377         .unlocked_ioctl = hfsplus_ioctl,
378 };
379
380 struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir,
381                                 umode_t mode)
382 {
383         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
384         struct inode *inode = new_inode(sb);
385         struct hfsplus_inode_info *hip;
386
387         if (!inode)
388                 return NULL;
389
390         inode->i_ino = sbi->next_cnid++;
391         inode_init_owner(&init_user_ns, inode, dir, mode);
392         set_nlink(inode, 1);
393         inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
394
395         hip = HFSPLUS_I(inode);
396         INIT_LIST_HEAD(&hip->open_dir_list);
397         spin_lock_init(&hip->open_dir_lock);
398         mutex_init(&hip->extents_lock);
399         atomic_set(&hip->opencnt, 0);
400         hip->extent_state = 0;
401         hip->flags = 0;
402         hip->userflags = 0;
403         hip->subfolders = 0;
404         memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
405         memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
406         hip->alloc_blocks = 0;
407         hip->first_blocks = 0;
408         hip->cached_start = 0;
409         hip->cached_blocks = 0;
410         hip->phys_size = 0;
411         hip->fs_blocks = 0;
412         hip->rsrc_inode = NULL;
413         if (S_ISDIR(inode->i_mode)) {
414                 inode->i_size = 2;
415                 sbi->folder_count++;
416                 inode->i_op = &hfsplus_dir_inode_operations;
417                 inode->i_fop = &hfsplus_dir_operations;
418         } else if (S_ISREG(inode->i_mode)) {
419                 sbi->file_count++;
420                 inode->i_op = &hfsplus_file_inode_operations;
421                 inode->i_fop = &hfsplus_file_operations;
422                 inode->i_mapping->a_ops = &hfsplus_aops;
423                 hip->clump_blocks = sbi->data_clump_blocks;
424         } else if (S_ISLNK(inode->i_mode)) {
425                 sbi->file_count++;
426                 inode->i_op = &page_symlink_inode_operations;
427                 inode_nohighmem(inode);
428                 inode->i_mapping->a_ops = &hfsplus_aops;
429                 hip->clump_blocks = 1;
430         } else
431                 sbi->file_count++;
432         insert_inode_hash(inode);
433         mark_inode_dirty(inode);
434         hfsplus_mark_mdb_dirty(sb);
435
436         return inode;
437 }
438
439 void hfsplus_delete_inode(struct inode *inode)
440 {
441         struct super_block *sb = inode->i_sb;
442
443         if (S_ISDIR(inode->i_mode)) {
444                 HFSPLUS_SB(sb)->folder_count--;
445                 hfsplus_mark_mdb_dirty(sb);
446                 return;
447         }
448         HFSPLUS_SB(sb)->file_count--;
449         if (S_ISREG(inode->i_mode)) {
450                 if (!inode->i_nlink) {
451                         inode->i_size = 0;
452                         hfsplus_file_truncate(inode);
453                 }
454         } else if (S_ISLNK(inode->i_mode)) {
455                 inode->i_size = 0;
456                 hfsplus_file_truncate(inode);
457         }
458         hfsplus_mark_mdb_dirty(sb);
459 }
460
461 void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
462 {
463         struct super_block *sb = inode->i_sb;
464         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
465         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
466         u32 count;
467         int i;
468
469         memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
470         for (count = 0, i = 0; i < 8; i++)
471                 count += be32_to_cpu(fork->extents[i].block_count);
472         hip->first_blocks = count;
473         memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
474         hip->cached_start = 0;
475         hip->cached_blocks = 0;
476
477         hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
478         hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
479         hip->fs_blocks =
480                 (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
481         inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
482         hip->clump_blocks =
483                 be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
484         if (!hip->clump_blocks) {
485                 hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
486                         sbi->rsrc_clump_blocks :
487                         sbi->data_clump_blocks;
488         }
489 }
490
491 void hfsplus_inode_write_fork(struct inode *inode,
492                 struct hfsplus_fork_raw *fork)
493 {
494         memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
495                sizeof(hfsplus_extent_rec));
496         fork->total_size = cpu_to_be64(inode->i_size);
497         fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
498 }
499
500 int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
501 {
502         hfsplus_cat_entry entry;
503         int res = 0;
504         u16 type;
505
506         type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
507
508         HFSPLUS_I(inode)->linkid = 0;
509         if (type == HFSPLUS_FOLDER) {
510                 struct hfsplus_cat_folder *folder = &entry.folder;
511
512                 if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
513                         /* panic? */;
514                 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
515                                         sizeof(struct hfsplus_cat_folder));
516                 hfsplus_get_perms(inode, &folder->permissions, 1);
517                 set_nlink(inode, 1);
518                 inode->i_size = 2 + be32_to_cpu(folder->valence);
519                 inode->i_atime = hfsp_mt2ut(folder->access_date);
520                 inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
521                 inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
522                 HFSPLUS_I(inode)->create_date = folder->create_date;
523                 HFSPLUS_I(inode)->fs_blocks = 0;
524                 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
525                         HFSPLUS_I(inode)->subfolders =
526                                 be32_to_cpu(folder->subfolders);
527                 }
528                 inode->i_op = &hfsplus_dir_inode_operations;
529                 inode->i_fop = &hfsplus_dir_operations;
530         } else if (type == HFSPLUS_FILE) {
531                 struct hfsplus_cat_file *file = &entry.file;
532
533                 if (fd->entrylength < sizeof(struct hfsplus_cat_file))
534                         /* panic? */;
535                 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
536                                         sizeof(struct hfsplus_cat_file));
537
538                 hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ?
539                                         &file->rsrc_fork : &file->data_fork);
540                 hfsplus_get_perms(inode, &file->permissions, 0);
541                 set_nlink(inode, 1);
542                 if (S_ISREG(inode->i_mode)) {
543                         if (file->permissions.dev)
544                                 set_nlink(inode,
545                                           be32_to_cpu(file->permissions.dev));
546                         inode->i_op = &hfsplus_file_inode_operations;
547                         inode->i_fop = &hfsplus_file_operations;
548                         inode->i_mapping->a_ops = &hfsplus_aops;
549                 } else if (S_ISLNK(inode->i_mode)) {
550                         inode->i_op = &page_symlink_inode_operations;
551                         inode_nohighmem(inode);
552                         inode->i_mapping->a_ops = &hfsplus_aops;
553                 } else {
554                         init_special_inode(inode, inode->i_mode,
555                                            be32_to_cpu(file->permissions.dev));
556                 }
557                 inode->i_atime = hfsp_mt2ut(file->access_date);
558                 inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
559                 inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
560                 HFSPLUS_I(inode)->create_date = file->create_date;
561         } else {
562                 pr_err("bad catalog entry used to create inode\n");
563                 res = -EIO;
564         }
565         return res;
566 }
567
568 int hfsplus_cat_write_inode(struct inode *inode)
569 {
570         struct inode *main_inode = inode;
571         struct hfs_find_data fd;
572         hfsplus_cat_entry entry;
573
574         if (HFSPLUS_IS_RSRC(inode))
575                 main_inode = HFSPLUS_I(inode)->rsrc_inode;
576
577         if (!main_inode->i_nlink)
578                 return 0;
579
580         if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
581                 /* panic? */
582                 return -EIO;
583
584         if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
585                 /* panic? */
586                 goto out;
587
588         if (S_ISDIR(main_inode->i_mode)) {
589                 struct hfsplus_cat_folder *folder = &entry.folder;
590
591                 if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
592                         /* panic? */;
593                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
594                                         sizeof(struct hfsplus_cat_folder));
595                 /* simple node checks? */
596                 hfsplus_cat_set_perms(inode, &folder->permissions);
597                 folder->access_date = hfsp_ut2mt(inode->i_atime);
598                 folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
599                 folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
600                 folder->valence = cpu_to_be32(inode->i_size - 2);
601                 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
602                         folder->subfolders =
603                                 cpu_to_be32(HFSPLUS_I(inode)->subfolders);
604                 }
605                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
606                                          sizeof(struct hfsplus_cat_folder));
607         } else if (HFSPLUS_IS_RSRC(inode)) {
608                 struct hfsplus_cat_file *file = &entry.file;
609                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
610                                sizeof(struct hfsplus_cat_file));
611                 hfsplus_inode_write_fork(inode, &file->rsrc_fork);
612                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
613                                 sizeof(struct hfsplus_cat_file));
614         } else {
615                 struct hfsplus_cat_file *file = &entry.file;
616
617                 if (fd.entrylength < sizeof(struct hfsplus_cat_file))
618                         /* panic? */;
619                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
620                                         sizeof(struct hfsplus_cat_file));
621                 hfsplus_inode_write_fork(inode, &file->data_fork);
622                 hfsplus_cat_set_perms(inode, &file->permissions);
623                 if (HFSPLUS_FLG_IMMUTABLE &
624                                 (file->permissions.rootflags |
625                                         file->permissions.userflags))
626                         file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
627                 else
628                         file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
629                 file->access_date = hfsp_ut2mt(inode->i_atime);
630                 file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
631                 file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
632                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
633                                          sizeof(struct hfsplus_cat_file));
634         }
635
636         set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags);
637 out:
638         hfs_find_exit(&fd);
639         return 0;
640 }
641
642 int hfsplus_fileattr_get(struct dentry *dentry, struct fileattr *fa)
643 {
644         struct inode *inode = d_inode(dentry);
645         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
646         unsigned int flags = 0;
647
648         if (inode->i_flags & S_IMMUTABLE)
649                 flags |= FS_IMMUTABLE_FL;
650         if (inode->i_flags & S_APPEND)
651                 flags |= FS_APPEND_FL;
652         if (hip->userflags & HFSPLUS_FLG_NODUMP)
653                 flags |= FS_NODUMP_FL;
654
655         fileattr_fill_flags(fa, flags);
656
657         return 0;
658 }
659
660 int hfsplus_fileattr_set(struct user_namespace *mnt_userns,
661                          struct dentry *dentry, struct fileattr *fa)
662 {
663         struct inode *inode = d_inode(dentry);
664         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
665         unsigned int new_fl = 0;
666
667         if (fileattr_has_fsx(fa))
668                 return -EOPNOTSUPP;
669
670         /* don't silently ignore unsupported ext2 flags */
671         if (fa->flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL))
672                 return -EOPNOTSUPP;
673
674         if (fa->flags & FS_IMMUTABLE_FL)
675                 new_fl |= S_IMMUTABLE;
676
677         if (fa->flags & FS_APPEND_FL)
678                 new_fl |= S_APPEND;
679
680         inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND);
681
682         if (fa->flags & FS_NODUMP_FL)
683                 hip->userflags |= HFSPLUS_FLG_NODUMP;
684         else
685                 hip->userflags &= ~HFSPLUS_FLG_NODUMP;
686
687         inode->i_ctime = current_time(inode);
688         mark_inode_dirty(inode);
689
690         return 0;
691 }