Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
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 | ||
34a2d313 | 12 | #include <linux/blkdev.h> |
1da177e4 LT |
13 | #include <linux/mm.h> |
14 | #include <linux/fs.h> | |
15 | #include <linux/pagemap.h> | |
1da177e4 | 16 | #include <linux/mpage.h> |
e8edc6e0 | 17 | #include <linux/sched.h> |
5b825c3a | 18 | #include <linux/cred.h> |
e2e40f2c | 19 | #include <linux/uio.h> |
9cbae748 | 20 | #include <linux/fileattr.h> |
1da177e4 LT |
21 | |
22 | #include "hfsplus_fs.h" | |
23 | #include "hfsplus_raw.h" | |
324ef39a | 24 | #include "xattr.h" |
1da177e4 | 25 | |
2c69e205 | 26 | static int hfsplus_read_folio(struct file *file, struct folio *folio) |
1da177e4 | 27 | { |
2c69e205 | 28 | return block_read_full_folio(folio, hfsplus_get_block); |
1da177e4 LT |
29 | } |
30 | ||
d5068485 MS |
31 | static void hfsplus_write_failed(struct address_space *mapping, loff_t to) |
32 | { | |
33 | struct inode *inode = mapping->host; | |
34 | ||
35 | if (to > inode->i_size) { | |
7caef267 | 36 | truncate_pagecache(inode, inode->i_size); |
d5068485 MS |
37 | hfsplus_file_truncate(inode); |
38 | } | |
39 | } | |
40 | ||
07a31f72 MWO |
41 | int hfsplus_write_begin(struct file *file, struct address_space *mapping, |
42 | loff_t pos, unsigned len, struct page **pagep, void **fsdata) | |
1da177e4 | 43 | { |
282dc178 CH |
44 | int ret; |
45 | ||
7c0efc62 | 46 | *pagep = NULL; |
be3bbbc5 | 47 | ret = cont_write_begin(file, mapping, pos, len, pagep, fsdata, |
7c0efc62 | 48 | hfsplus_get_block, |
6af502de | 49 | &HFSPLUS_I(mapping->host)->phys_size); |
d5068485 MS |
50 | if (unlikely(ret)) |
51 | hfsplus_write_failed(mapping, pos + len); | |
282dc178 CH |
52 | |
53 | return ret; | |
1da177e4 LT |
54 | } |
55 | ||
56 | static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) | |
57 | { | |
58 | return generic_block_bmap(mapping, block, hfsplus_get_block); | |
59 | } | |
60 | ||
7ffce3d9 | 61 | static bool hfsplus_release_folio(struct folio *folio, gfp_t mask) |
1da177e4 | 62 | { |
7ffce3d9 | 63 | struct inode *inode = folio->mapping->host; |
1da177e4 LT |
64 | struct super_block *sb = inode->i_sb; |
65 | struct hfs_btree *tree; | |
66 | struct hfs_bnode *node; | |
67 | u32 nidx; | |
7ffce3d9 MWO |
68 | int i; |
69 | bool res = true; | |
1da177e4 LT |
70 | |
71 | switch (inode->i_ino) { | |
72 | case HFSPLUS_EXT_CNID: | |
dd73a01a | 73 | tree = HFSPLUS_SB(sb)->ext_tree; |
1da177e4 LT |
74 | break; |
75 | case HFSPLUS_CAT_CNID: | |
dd73a01a | 76 | tree = HFSPLUS_SB(sb)->cat_tree; |
1da177e4 LT |
77 | break; |
78 | case HFSPLUS_ATTR_CNID: | |
dd73a01a | 79 | tree = HFSPLUS_SB(sb)->attr_tree; |
1da177e4 LT |
80 | break; |
81 | default: | |
82 | BUG(); | |
7ffce3d9 | 83 | return false; |
1da177e4 | 84 | } |
70632249 | 85 | if (!tree) |
7ffce3d9 | 86 | return false; |
09cbfeaf | 87 | if (tree->node_size >= PAGE_SIZE) { |
7ffce3d9 | 88 | nidx = folio->index >> |
09cbfeaf | 89 | (tree->node_size_shift - PAGE_SHIFT); |
1da177e4 LT |
90 | spin_lock(&tree->hash_lock); |
91 | node = hfs_bnode_findhash(tree, nidx); | |
92 | if (!node) | |
93 | ; | |
94 | else if (atomic_read(&node->refcnt)) | |
7ffce3d9 | 95 | res = false; |
1da177e4 LT |
96 | if (res && node) { |
97 | hfs_bnode_unhash(node); | |
98 | hfs_bnode_free(node); | |
99 | } | |
100 | spin_unlock(&tree->hash_lock); | |
101 | } else { | |
7ffce3d9 | 102 | nidx = folio->index << |
09cbfeaf KS |
103 | (PAGE_SHIFT - tree->node_size_shift); |
104 | i = 1 << (PAGE_SHIFT - tree->node_size_shift); | |
1da177e4 LT |
105 | spin_lock(&tree->hash_lock); |
106 | do { | |
107 | node = hfs_bnode_findhash(tree, nidx++); | |
108 | if (!node) | |
109 | continue; | |
110 | if (atomic_read(&node->refcnt)) { | |
7ffce3d9 | 111 | res = false; |
1da177e4 LT |
112 | break; |
113 | } | |
114 | hfs_bnode_unhash(node); | |
115 | hfs_bnode_free(node); | |
116 | } while (--i && nidx < tree->node_count); | |
117 | spin_unlock(&tree->hash_lock); | |
118 | } | |
68189fef | 119 | return res ? try_to_free_buffers(folio) : false; |
1da177e4 LT |
120 | } |
121 | ||
c8b8e32d | 122 | static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter) |
1da177e4 LT |
123 | { |
124 | struct file *file = iocb->ki_filp; | |
d5068485 | 125 | struct address_space *mapping = file->f_mapping; |
93c76a3d | 126 | struct inode *inode = mapping->host; |
a6cbcd4a | 127 | size_t count = iov_iter_count(iter); |
eafdc7d1 | 128 | ssize_t ret; |
1da177e4 | 129 | |
c8b8e32d | 130 | ret = blockdev_direct_IO(iocb, inode, iter, hfsplus_get_block); |
eafdc7d1 CH |
131 | |
132 | /* | |
133 | * In case of error extending write may have instantiated a few | |
134 | * blocks outside i_size. Trim these off again. | |
135 | */ | |
6f673763 | 136 | if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) { |
eafdc7d1 | 137 | loff_t isize = i_size_read(inode); |
c8b8e32d | 138 | loff_t end = iocb->ki_pos + count; |
eafdc7d1 CH |
139 | |
140 | if (end > isize) | |
d5068485 | 141 | hfsplus_write_failed(mapping, end); |
eafdc7d1 CH |
142 | } |
143 | ||
144 | return ret; | |
1da177e4 LT |
145 | } |
146 | ||
147 | static int hfsplus_writepages(struct address_space *mapping, | |
148 | struct writeback_control *wbc) | |
149 | { | |
150 | return mpage_writepages(mapping, wbc, hfsplus_get_block); | |
151 | } | |
152 | ||
f5e54d6e | 153 | const struct address_space_operations hfsplus_btree_aops = { |
e621900a | 154 | .dirty_folio = block_dirty_folio, |
7ba13abb | 155 | .invalidate_folio = block_invalidate_folio, |
2c69e205 | 156 | .read_folio = hfsplus_read_folio, |
44afc066 | 157 | .writepages = hfsplus_writepages, |
7c0efc62 NP |
158 | .write_begin = hfsplus_write_begin, |
159 | .write_end = generic_write_end, | |
44afc066 | 160 | .migrate_folio = buffer_migrate_folio, |
1da177e4 | 161 | .bmap = hfsplus_bmap, |
7ffce3d9 | 162 | .release_folio = hfsplus_release_folio, |
1da177e4 LT |
163 | }; |
164 | ||
f5e54d6e | 165 | const struct address_space_operations hfsplus_aops = { |
e621900a | 166 | .dirty_folio = block_dirty_folio, |
7ba13abb | 167 | .invalidate_folio = block_invalidate_folio, |
2c69e205 | 168 | .read_folio = hfsplus_read_folio, |
7c0efc62 NP |
169 | .write_begin = hfsplus_write_begin, |
170 | .write_end = generic_write_end, | |
1da177e4 LT |
171 | .bmap = hfsplus_bmap, |
172 | .direct_IO = hfsplus_direct_IO, | |
173 | .writepages = hfsplus_writepages, | |
12f9b9a7 | 174 | .migrate_folio = buffer_migrate_folio, |
1da177e4 LT |
175 | }; |
176 | ||
e16404ed | 177 | const struct dentry_operations hfsplus_dentry_operations = { |
d45bce8f DG |
178 | .d_hash = hfsplus_hash_dentry, |
179 | .d_compare = hfsplus_compare_dentry, | |
180 | }; | |
181 | ||
2753cc28 AS |
182 | static void hfsplus_get_perms(struct inode *inode, |
183 | struct hfsplus_perm *perms, int dir) | |
1da177e4 | 184 | { |
dd73a01a | 185 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
1da177e4 LT |
186 | u16 mode; |
187 | ||
188 | mode = be16_to_cpu(perms->mode); | |
189 | ||
16525e3f | 190 | i_uid_write(inode, be32_to_cpu(perms->owner)); |
9f2b5deb | 191 | if ((test_bit(HFSPLUS_SB_UID, &sbi->flags)) || (!i_uid_read(inode) && !mode)) |
dd73a01a | 192 | inode->i_uid = sbi->uid; |
1da177e4 | 193 | |
16525e3f | 194 | i_gid_write(inode, be32_to_cpu(perms->group)); |
9f2b5deb | 195 | if ((test_bit(HFSPLUS_SB_GID, &sbi->flags)) || (!i_gid_read(inode) && !mode)) |
dd73a01a | 196 | inode->i_gid = sbi->gid; |
1da177e4 LT |
197 | |
198 | if (dir) { | |
dd73a01a | 199 | mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); |
1da177e4 LT |
200 | mode |= S_IFDIR; |
201 | } else if (!mode) | |
dd73a01a | 202 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); |
1da177e4 LT |
203 | inode->i_mode = mode; |
204 | ||
6af502de | 205 | HFSPLUS_I(inode)->userflags = perms->userflags; |
1da177e4 LT |
206 | if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) |
207 | inode->i_flags |= S_IMMUTABLE; | |
208 | else | |
209 | inode->i_flags &= ~S_IMMUTABLE; | |
210 | if (perms->rootflags & HFSPLUS_FLG_APPEND) | |
211 | inode->i_flags |= S_APPEND; | |
212 | else | |
213 | inode->i_flags &= ~S_APPEND; | |
214 | } | |
215 | ||
1da177e4 LT |
216 | static int hfsplus_file_open(struct inode *inode, struct file *file) |
217 | { | |
218 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 219 | inode = HFSPLUS_I(inode)->rsrc_inode; |
6e715294 AC |
220 | if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
221 | return -EOVERFLOW; | |
6af502de | 222 | atomic_inc(&HFSPLUS_I(inode)->opencnt); |
1da177e4 LT |
223 | return 0; |
224 | } | |
225 | ||
226 | static int hfsplus_file_release(struct inode *inode, struct file *file) | |
227 | { | |
228 | struct super_block *sb = inode->i_sb; | |
229 | ||
230 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de CH |
231 | inode = HFSPLUS_I(inode)->rsrc_inode; |
232 | if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { | |
5955102c | 233 | inode_lock(inode); |
1da177e4 LT |
234 | hfsplus_file_truncate(inode); |
235 | if (inode->i_flags & S_DEAD) { | |
dd73a01a CH |
236 | hfsplus_delete_cat(inode->i_ino, |
237 | HFSPLUS_SB(sb)->hidden_dir, NULL); | |
1da177e4 LT |
238 | hfsplus_delete_inode(inode); |
239 | } | |
5955102c | 240 | inode_unlock(inode); |
1da177e4 LT |
241 | } |
242 | return 0; | |
243 | } | |
244 | ||
c1632a0f | 245 | static int hfsplus_setattr(struct mnt_idmap *idmap, |
549c7297 | 246 | struct dentry *dentry, struct iattr *attr) |
d39aae9e | 247 | { |
2b0143b5 | 248 | struct inode *inode = d_inode(dentry); |
d39aae9e CH |
249 | int error; |
250 | ||
c1632a0f | 251 | error = setattr_prepare(&nop_mnt_idmap, dentry, attr); |
d39aae9e CH |
252 | if (error) |
253 | return error; | |
1025774c CH |
254 | |
255 | if ((attr->ia_valid & ATTR_SIZE) && | |
256 | attr->ia_size != i_size_read(inode)) { | |
562c72aa | 257 | inode_dio_wait(inode); |
059a704c SA |
258 | if (attr->ia_size > inode->i_size) { |
259 | error = generic_cont_expand_simple(inode, | |
260 | attr->ia_size); | |
261 | if (error) | |
262 | return error; | |
263 | } | |
d5068485 MS |
264 | truncate_setsize(inode, attr->ia_size); |
265 | hfsplus_file_truncate(inode); | |
a0491073 | 266 | inode_set_mtime_to_ts(inode, inode_set_ctime_current(inode)); |
1025774c CH |
267 | } |
268 | ||
c1632a0f | 269 | setattr_copy(&nop_mnt_idmap, inode, attr); |
1025774c | 270 | mark_inode_dirty(inode); |
b4c1107c | 271 | |
1025774c | 272 | return 0; |
d39aae9e CH |
273 | } |
274 | ||
b74d24f7 | 275 | int hfsplus_getattr(struct mnt_idmap *idmap, const struct path *path, |
549c7297 CB |
276 | struct kstat *stat, u32 request_mask, |
277 | unsigned int query_flags) | |
f93ca1ed EF |
278 | { |
279 | struct inode *inode = d_inode(path->dentry); | |
280 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); | |
281 | ||
c3eb8409 CCC |
282 | if (request_mask & STATX_BTIME) { |
283 | stat->result_mask |= STATX_BTIME; | |
284 | stat->btime = hfsp_mt2ut(hip->create_date); | |
285 | } | |
286 | ||
f93ca1ed EF |
287 | if (inode->i_flags & S_APPEND) |
288 | stat->attributes |= STATX_ATTR_APPEND; | |
289 | if (inode->i_flags & S_IMMUTABLE) | |
290 | stat->attributes |= STATX_ATTR_IMMUTABLE; | |
291 | if (hip->userflags & HFSPLUS_FLG_NODUMP) | |
292 | stat->attributes |= STATX_ATTR_NODUMP; | |
293 | ||
294 | stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE | | |
295 | STATX_ATTR_NODUMP; | |
296 | ||
0d72b928 | 297 | generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); |
f93ca1ed EF |
298 | return 0; |
299 | } | |
300 | ||
02c24a82 JB |
301 | int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, |
302 | int datasync) | |
b5fc510c | 303 | { |
28146976 | 304 | struct inode *inode = file->f_mapping->host; |
e3494705 | 305 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
28146976 | 306 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
e3494705 | 307 | int error = 0, error2; |
b5fc510c | 308 | |
3b49c9a1 | 309 | error = file_write_and_wait_range(file, start, end); |
02c24a82 JB |
310 | if (error) |
311 | return error; | |
5955102c | 312 | inode_lock(inode); |
02c24a82 | 313 | |
28146976 CH |
314 | /* |
315 | * Sync inode metadata into the catalog and extent trees. | |
316 | */ | |
317 | sync_inode_metadata(inode, 1); | |
318 | ||
319 | /* | |
320 | * And explicitly write out the btrees. | |
321 | */ | |
e3494705 CH |
322 | if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) |
323 | error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); | |
324 | ||
325 | if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { | |
2753cc28 AS |
326 | error2 = |
327 | filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); | |
e3494705 CH |
328 | if (!error) |
329 | error = error2; | |
330 | } | |
331 | ||
324ef39a VD |
332 | if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) { |
333 | if (sbi->attr_tree) { | |
334 | error2 = | |
335 | filemap_write_and_wait( | |
336 | sbi->attr_tree->inode->i_mapping); | |
337 | if (!error) | |
338 | error = error2; | |
339 | } else { | |
d6142673 | 340 | pr_err("sync non-existent attributes tree\n"); |
324ef39a VD |
341 | } |
342 | } | |
343 | ||
e3494705 CH |
344 | if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { |
345 | error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); | |
346 | if (!error) | |
347 | error = error2; | |
348 | } | |
349 | ||
34a2d313 | 350 | if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) |
c6bf3f0e | 351 | blkdev_issue_flush(inode->i_sb->s_bdev); |
34a2d313 | 352 | |
5955102c | 353 | inode_unlock(inode); |
02c24a82 | 354 | |
28146976 | 355 | return error; |
b5fc510c AV |
356 | } |
357 | ||
92e1d5be | 358 | static const struct inode_operations hfsplus_file_inode_operations = { |
d39aae9e | 359 | .setattr = hfsplus_setattr, |
f93ca1ed | 360 | .getattr = hfsplus_getattr, |
1da177e4 | 361 | .listxattr = hfsplus_listxattr, |
9cbae748 MS |
362 | .fileattr_get = hfsplus_fileattr_get, |
363 | .fileattr_set = hfsplus_fileattr_set, | |
1da177e4 LT |
364 | }; |
365 | ||
4b6f5d20 | 366 | static const struct file_operations hfsplus_file_operations = { |
20b7643d | 367 | .llseek = generic_file_llseek, |
aad4f8bb | 368 | .read_iter = generic_file_read_iter, |
8174202b | 369 | .write_iter = generic_file_write_iter, |
1da177e4 | 370 | .mmap = generic_file_mmap, |
2cb1e089 | 371 | .splice_read = filemap_splice_read, |
b5fc510c | 372 | .fsync = hfsplus_file_fsync, |
1da177e4 LT |
373 | .open = hfsplus_file_open, |
374 | .release = hfsplus_file_release, | |
7cc4bcc6 | 375 | .unlocked_ioctl = hfsplus_ioctl, |
1da177e4 LT |
376 | }; |
377 | ||
b0cd38c7 EF |
378 | struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir, |
379 | umode_t mode) | |
1da177e4 | 380 | { |
dd73a01a | 381 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
1da177e4 | 382 | struct inode *inode = new_inode(sb); |
6af502de | 383 | struct hfsplus_inode_info *hip; |
dd73a01a | 384 | |
1da177e4 LT |
385 | if (!inode) |
386 | return NULL; | |
387 | ||
dd73a01a | 388 | inode->i_ino = sbi->next_cnid++; |
f2d40141 | 389 | inode_init_owner(&nop_mnt_idmap, inode, dir, mode); |
bfe86848 | 390 | set_nlink(inode, 1); |
a0491073 | 391 | simple_inode_init_ts(inode); |
6af502de CH |
392 | |
393 | hip = HFSPLUS_I(inode); | |
394 | INIT_LIST_HEAD(&hip->open_dir_list); | |
323ee8fc | 395 | spin_lock_init(&hip->open_dir_lock); |
6af502de CH |
396 | mutex_init(&hip->extents_lock); |
397 | atomic_set(&hip->opencnt, 0); | |
b33b7921 | 398 | hip->extent_state = 0; |
6af502de | 399 | hip->flags = 0; |
f3922382 | 400 | hip->userflags = 0; |
d7d673a5 | 401 | hip->subfolders = 0; |
6af502de CH |
402 | memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); |
403 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
404 | hip->alloc_blocks = 0; | |
405 | hip->first_blocks = 0; | |
406 | hip->cached_start = 0; | |
407 | hip->cached_blocks = 0; | |
408 | hip->phys_size = 0; | |
409 | hip->fs_blocks = 0; | |
410 | hip->rsrc_inode = NULL; | |
1da177e4 LT |
411 | if (S_ISDIR(inode->i_mode)) { |
412 | inode->i_size = 2; | |
dd73a01a | 413 | sbi->folder_count++; |
1da177e4 LT |
414 | inode->i_op = &hfsplus_dir_inode_operations; |
415 | inode->i_fop = &hfsplus_dir_operations; | |
416 | } else if (S_ISREG(inode->i_mode)) { | |
dd73a01a | 417 | sbi->file_count++; |
1da177e4 LT |
418 | inode->i_op = &hfsplus_file_inode_operations; |
419 | inode->i_fop = &hfsplus_file_operations; | |
420 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 421 | hip->clump_blocks = sbi->data_clump_blocks; |
1da177e4 | 422 | } else if (S_ISLNK(inode->i_mode)) { |
dd73a01a | 423 | sbi->file_count++; |
1da177e4 | 424 | inode->i_op = &page_symlink_inode_operations; |
21fc61c7 | 425 | inode_nohighmem(inode); |
1da177e4 | 426 | inode->i_mapping->a_ops = &hfsplus_aops; |
6af502de | 427 | hip->clump_blocks = 1; |
1da177e4 | 428 | } else |
dd73a01a | 429 | sbi->file_count++; |
1da177e4 LT |
430 | insert_inode_hash(inode); |
431 | mark_inode_dirty(inode); | |
9e6c5829 | 432 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
433 | |
434 | return inode; | |
435 | } | |
436 | ||
437 | void hfsplus_delete_inode(struct inode *inode) | |
438 | { | |
439 | struct super_block *sb = inode->i_sb; | |
440 | ||
441 | if (S_ISDIR(inode->i_mode)) { | |
dd73a01a | 442 | HFSPLUS_SB(sb)->folder_count--; |
9e6c5829 | 443 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
444 | return; |
445 | } | |
dd73a01a | 446 | HFSPLUS_SB(sb)->file_count--; |
1da177e4 LT |
447 | if (S_ISREG(inode->i_mode)) { |
448 | if (!inode->i_nlink) { | |
449 | inode->i_size = 0; | |
450 | hfsplus_file_truncate(inode); | |
451 | } | |
452 | } else if (S_ISLNK(inode->i_mode)) { | |
453 | inode->i_size = 0; | |
454 | hfsplus_file_truncate(inode); | |
455 | } | |
9e6c5829 | 456 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
457 | } |
458 | ||
459 | void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
460 | { | |
461 | struct super_block *sb = inode->i_sb; | |
dd73a01a | 462 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
6af502de | 463 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
1da177e4 LT |
464 | u32 count; |
465 | int i; | |
466 | ||
6af502de | 467 | memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); |
1da177e4 LT |
468 | for (count = 0, i = 0; i < 8; i++) |
469 | count += be32_to_cpu(fork->extents[i].block_count); | |
6af502de CH |
470 | hip->first_blocks = count; |
471 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
472 | hip->cached_start = 0; | |
473 | hip->cached_blocks = 0; | |
474 | ||
475 | hip->alloc_blocks = be32_to_cpu(fork->total_blocks); | |
476 | hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); | |
477 | hip->fs_blocks = | |
478 | (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
479 | inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); | |
480 | hip->clump_blocks = | |
dd73a01a | 481 | be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; |
6af502de CH |
482 | if (!hip->clump_blocks) { |
483 | hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? | |
dd73a01a CH |
484 | sbi->rsrc_clump_blocks : |
485 | sbi->data_clump_blocks; | |
486 | } | |
1da177e4 LT |
487 | } |
488 | ||
2753cc28 AS |
489 | void hfsplus_inode_write_fork(struct inode *inode, |
490 | struct hfsplus_fork_raw *fork) | |
1da177e4 | 491 | { |
6af502de | 492 | memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, |
1da177e4 LT |
493 | sizeof(hfsplus_extent_rec)); |
494 | fork->total_size = cpu_to_be64(inode->i_size); | |
6af502de | 495 | fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); |
1da177e4 LT |
496 | } |
497 | ||
498 | int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) | |
499 | { | |
500 | hfsplus_cat_entry entry; | |
501 | int res = 0; | |
502 | u16 type; | |
503 | ||
504 | type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); | |
505 | ||
f6089ff8 | 506 | HFSPLUS_I(inode)->linkid = 0; |
1da177e4 LT |
507 | if (type == HFSPLUS_FOLDER) { |
508 | struct hfsplus_cat_folder *folder = &entry.folder; | |
509 | ||
81b21c0f TH |
510 | if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) { |
511 | pr_err("bad catalog folder entry\n"); | |
512 | res = -EIO; | |
513 | goto out; | |
514 | } | |
1da177e4 LT |
515 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, |
516 | sizeof(struct hfsplus_cat_folder)); | |
517 | hfsplus_get_perms(inode, &folder->permissions, 1); | |
bfe86848 | 518 | set_nlink(inode, 1); |
1da177e4 | 519 | inode->i_size = 2 + be32_to_cpu(folder->valence); |
a0491073 JL |
520 | inode_set_atime_to_ts(inode, hfsp_mt2ut(folder->access_date)); |
521 | inode_set_mtime_to_ts(inode, | |
522 | hfsp_mt2ut(folder->content_mod_date)); | |
101fa821 JL |
523 | inode_set_ctime_to_ts(inode, |
524 | hfsp_mt2ut(folder->attribute_mod_date)); | |
6af502de CH |
525 | HFSPLUS_I(inode)->create_date = folder->create_date; |
526 | HFSPLUS_I(inode)->fs_blocks = 0; | |
d7d673a5 SA |
527 | if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { |
528 | HFSPLUS_I(inode)->subfolders = | |
529 | be32_to_cpu(folder->subfolders); | |
530 | } | |
1da177e4 LT |
531 | inode->i_op = &hfsplus_dir_inode_operations; |
532 | inode->i_fop = &hfsplus_dir_operations; | |
533 | } else if (type == HFSPLUS_FILE) { | |
534 | struct hfsplus_cat_file *file = &entry.file; | |
535 | ||
81b21c0f TH |
536 | if (fd->entrylength < sizeof(struct hfsplus_cat_file)) { |
537 | pr_err("bad catalog file entry\n"); | |
538 | res = -EIO; | |
539 | goto out; | |
540 | } | |
1da177e4 LT |
541 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, |
542 | sizeof(struct hfsplus_cat_file)); | |
543 | ||
b33b7921 CH |
544 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? |
545 | &file->rsrc_fork : &file->data_fork); | |
1da177e4 | 546 | hfsplus_get_perms(inode, &file->permissions, 0); |
bfe86848 | 547 | set_nlink(inode, 1); |
1da177e4 LT |
548 | if (S_ISREG(inode->i_mode)) { |
549 | if (file->permissions.dev) | |
bfe86848 MS |
550 | set_nlink(inode, |
551 | be32_to_cpu(file->permissions.dev)); | |
1da177e4 LT |
552 | inode->i_op = &hfsplus_file_inode_operations; |
553 | inode->i_fop = &hfsplus_file_operations; | |
554 | inode->i_mapping->a_ops = &hfsplus_aops; | |
555 | } else if (S_ISLNK(inode->i_mode)) { | |
556 | inode->i_op = &page_symlink_inode_operations; | |
21fc61c7 | 557 | inode_nohighmem(inode); |
1da177e4 LT |
558 | inode->i_mapping->a_ops = &hfsplus_aops; |
559 | } else { | |
560 | init_special_inode(inode, inode->i_mode, | |
561 | be32_to_cpu(file->permissions.dev)); | |
562 | } | |
a0491073 JL |
563 | inode_set_atime_to_ts(inode, hfsp_mt2ut(file->access_date)); |
564 | inode_set_mtime_to_ts(inode, | |
565 | hfsp_mt2ut(file->content_mod_date)); | |
101fa821 JL |
566 | inode_set_ctime_to_ts(inode, |
567 | hfsp_mt2ut(file->attribute_mod_date)); | |
6af502de | 568 | HFSPLUS_I(inode)->create_date = file->create_date; |
1da177e4 | 569 | } else { |
d6142673 | 570 | pr_err("bad catalog entry used to create inode\n"); |
1da177e4 LT |
571 | res = -EIO; |
572 | } | |
81b21c0f | 573 | out: |
1da177e4 LT |
574 | return res; |
575 | } | |
576 | ||
577 | int hfsplus_cat_write_inode(struct inode *inode) | |
578 | { | |
579 | struct inode *main_inode = inode; | |
580 | struct hfs_find_data fd; | |
581 | hfsplus_cat_entry entry; | |
81b21c0f | 582 | int res = 0; |
1da177e4 LT |
583 | |
584 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 585 | main_inode = HFSPLUS_I(inode)->rsrc_inode; |
1da177e4 LT |
586 | |
587 | if (!main_inode->i_nlink) | |
588 | return 0; | |
589 | ||
dd73a01a | 590 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) |
1da177e4 LT |
591 | /* panic? */ |
592 | return -EIO; | |
593 | ||
594 | if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) | |
595 | /* panic? */ | |
596 | goto out; | |
597 | ||
598 | if (S_ISDIR(main_inode->i_mode)) { | |
599 | struct hfsplus_cat_folder *folder = &entry.folder; | |
600 | ||
81b21c0f TH |
601 | if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) { |
602 | pr_err("bad catalog folder entry\n"); | |
603 | res = -EIO; | |
604 | goto out; | |
605 | } | |
1da177e4 LT |
606 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, |
607 | sizeof(struct hfsplus_cat_folder)); | |
608 | /* simple node checks? */ | |
90e61690 | 609 | hfsplus_cat_set_perms(inode, &folder->permissions); |
a0491073 JL |
610 | folder->access_date = hfsp_ut2mt(inode_get_atime(inode)); |
611 | folder->content_mod_date = hfsp_ut2mt(inode_get_mtime(inode)); | |
101fa821 | 612 | folder->attribute_mod_date = hfsp_ut2mt(inode_get_ctime(inode)); |
1da177e4 | 613 | folder->valence = cpu_to_be32(inode->i_size - 2); |
d7d673a5 SA |
614 | if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { |
615 | folder->subfolders = | |
616 | cpu_to_be32(HFSPLUS_I(inode)->subfolders); | |
617 | } | |
1da177e4 LT |
618 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, |
619 | sizeof(struct hfsplus_cat_folder)); | |
620 | } else if (HFSPLUS_IS_RSRC(inode)) { | |
621 | struct hfsplus_cat_file *file = &entry.file; | |
622 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
623 | sizeof(struct hfsplus_cat_file)); | |
624 | hfsplus_inode_write_fork(inode, &file->rsrc_fork); | |
625 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
626 | sizeof(struct hfsplus_cat_file)); | |
627 | } else { | |
628 | struct hfsplus_cat_file *file = &entry.file; | |
629 | ||
81b21c0f TH |
630 | if (fd.entrylength < sizeof(struct hfsplus_cat_file)) { |
631 | pr_err("bad catalog file entry\n"); | |
632 | res = -EIO; | |
633 | goto out; | |
634 | } | |
1da177e4 LT |
635 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, |
636 | sizeof(struct hfsplus_cat_file)); | |
637 | hfsplus_inode_write_fork(inode, &file->data_fork); | |
90e61690 | 638 | hfsplus_cat_set_perms(inode, &file->permissions); |
2753cc28 AS |
639 | if (HFSPLUS_FLG_IMMUTABLE & |
640 | (file->permissions.rootflags | | |
641 | file->permissions.userflags)) | |
1da177e4 LT |
642 | file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); |
643 | else | |
644 | file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); | |
a0491073 JL |
645 | file->access_date = hfsp_ut2mt(inode_get_atime(inode)); |
646 | file->content_mod_date = hfsp_ut2mt(inode_get_mtime(inode)); | |
101fa821 | 647 | file->attribute_mod_date = hfsp_ut2mt(inode_get_ctime(inode)); |
1da177e4 LT |
648 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, |
649 | sizeof(struct hfsplus_cat_file)); | |
650 | } | |
e3494705 CH |
651 | |
652 | set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); | |
1da177e4 LT |
653 | out: |
654 | hfs_find_exit(&fd); | |
81b21c0f | 655 | return res; |
1da177e4 | 656 | } |
9cbae748 MS |
657 | |
658 | int hfsplus_fileattr_get(struct dentry *dentry, struct fileattr *fa) | |
659 | { | |
660 | struct inode *inode = d_inode(dentry); | |
661 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); | |
662 | unsigned int flags = 0; | |
663 | ||
664 | if (inode->i_flags & S_IMMUTABLE) | |
665 | flags |= FS_IMMUTABLE_FL; | |
666 | if (inode->i_flags & S_APPEND) | |
667 | flags |= FS_APPEND_FL; | |
668 | if (hip->userflags & HFSPLUS_FLG_NODUMP) | |
669 | flags |= FS_NODUMP_FL; | |
670 | ||
671 | fileattr_fill_flags(fa, flags); | |
672 | ||
673 | return 0; | |
674 | } | |
675 | ||
8782a9ae | 676 | int hfsplus_fileattr_set(struct mnt_idmap *idmap, |
9cbae748 MS |
677 | struct dentry *dentry, struct fileattr *fa) |
678 | { | |
679 | struct inode *inode = d_inode(dentry); | |
680 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); | |
681 | unsigned int new_fl = 0; | |
682 | ||
683 | if (fileattr_has_fsx(fa)) | |
684 | return -EOPNOTSUPP; | |
685 | ||
686 | /* don't silently ignore unsupported ext2 flags */ | |
687 | if (fa->flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) | |
688 | return -EOPNOTSUPP; | |
689 | ||
690 | if (fa->flags & FS_IMMUTABLE_FL) | |
691 | new_fl |= S_IMMUTABLE; | |
692 | ||
693 | if (fa->flags & FS_APPEND_FL) | |
694 | new_fl |= S_APPEND; | |
695 | ||
696 | inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND); | |
697 | ||
698 | if (fa->flags & FS_NODUMP_FL) | |
699 | hip->userflags |= HFSPLUS_FLG_NODUMP; | |
700 | else | |
701 | hip->userflags &= ~HFSPLUS_FLG_NODUMP; | |
702 | ||
101fa821 | 703 | inode_set_ctime_current(inode); |
9cbae748 MS |
704 | mark_inode_dirty(inode); |
705 | ||
706 | return 0; | |
707 | } |