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 LT |
25 | |
26 | static int hfsplus_readpage(struct file *file, struct page *page) | |
27 | { | |
1da177e4 LT |
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 | { | |
1da177e4 LT |
33 | return block_write_full_page(page, hfsplus_get_block, wbc); |
34 | } | |
35 | ||
d5068485 MS |
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) { | |
7caef267 | 41 | truncate_pagecache(inode, inode->i_size); |
d5068485 MS |
42 | hfsplus_file_truncate(inode); |
43 | } | |
44 | } | |
45 | ||
7c0efc62 NP |
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) | |
1da177e4 | 49 | { |
282dc178 CH |
50 | int ret; |
51 | ||
7c0efc62 | 52 | *pagep = NULL; |
282dc178 | 53 | ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, |
7c0efc62 | 54 | hfsplus_get_block, |
6af502de | 55 | &HFSPLUS_I(mapping->host)->phys_size); |
d5068485 MS |
56 | if (unlikely(ret)) |
57 | hfsplus_write_failed(mapping, pos + len); | |
282dc178 CH |
58 | |
59 | return ret; | |
1da177e4 LT |
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 | ||
27496a8c | 67 | static int hfsplus_releasepage(struct page *page, gfp_t mask) |
1da177e4 LT |
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: | |
dd73a01a | 78 | tree = HFSPLUS_SB(sb)->ext_tree; |
1da177e4 LT |
79 | break; |
80 | case HFSPLUS_CAT_CNID: | |
dd73a01a | 81 | tree = HFSPLUS_SB(sb)->cat_tree; |
1da177e4 LT |
82 | break; |
83 | case HFSPLUS_ATTR_CNID: | |
dd73a01a | 84 | tree = HFSPLUS_SB(sb)->attr_tree; |
1da177e4 LT |
85 | break; |
86 | default: | |
87 | BUG(); | |
88 | return 0; | |
89 | } | |
70632249 ES |
90 | if (!tree) |
91 | return 0; | |
09cbfeaf | 92 | if (tree->node_size >= PAGE_SIZE) { |
2753cc28 | 93 | nidx = page->index >> |
09cbfeaf | 94 | (tree->node_size_shift - PAGE_SHIFT); |
1da177e4 LT |
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 { | |
2753cc28 | 107 | nidx = page->index << |
09cbfeaf KS |
108 | (PAGE_SHIFT - tree->node_size_shift); |
109 | i = 1 << (PAGE_SHIFT - tree->node_size_shift); | |
1da177e4 LT |
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 | } | |
1da177e4 LT |
124 | return res ? try_to_free_buffers(page) : 0; |
125 | } | |
126 | ||
c8b8e32d | 127 | static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter) |
1da177e4 LT |
128 | { |
129 | struct file *file = iocb->ki_filp; | |
d5068485 | 130 | struct address_space *mapping = file->f_mapping; |
93c76a3d | 131 | struct inode *inode = mapping->host; |
a6cbcd4a | 132 | size_t count = iov_iter_count(iter); |
eafdc7d1 | 133 | ssize_t ret; |
1da177e4 | 134 | |
c8b8e32d | 135 | ret = blockdev_direct_IO(iocb, inode, iter, hfsplus_get_block); |
eafdc7d1 CH |
136 | |
137 | /* | |
138 | * In case of error extending write may have instantiated a few | |
139 | * blocks outside i_size. Trim these off again. | |
140 | */ | |
6f673763 | 141 | if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) { |
eafdc7d1 | 142 | loff_t isize = i_size_read(inode); |
c8b8e32d | 143 | loff_t end = iocb->ki_pos + count; |
eafdc7d1 CH |
144 | |
145 | if (end > isize) | |
d5068485 | 146 | hfsplus_write_failed(mapping, end); |
eafdc7d1 CH |
147 | } |
148 | ||
149 | return ret; | |
1da177e4 LT |
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 | ||
f5e54d6e | 158 | const struct address_space_operations hfsplus_btree_aops = { |
0af57378 | 159 | .set_page_dirty = __set_page_dirty_buffers, |
1da177e4 LT |
160 | .readpage = hfsplus_readpage, |
161 | .writepage = hfsplus_writepage, | |
7c0efc62 NP |
162 | .write_begin = hfsplus_write_begin, |
163 | .write_end = generic_write_end, | |
1da177e4 LT |
164 | .bmap = hfsplus_bmap, |
165 | .releasepage = hfsplus_releasepage, | |
166 | }; | |
167 | ||
f5e54d6e | 168 | const struct address_space_operations hfsplus_aops = { |
0af57378 | 169 | .set_page_dirty = __set_page_dirty_buffers, |
1da177e4 LT |
170 | .readpage = hfsplus_readpage, |
171 | .writepage = hfsplus_writepage, | |
7c0efc62 NP |
172 | .write_begin = hfsplus_write_begin, |
173 | .write_end = generic_write_end, | |
1da177e4 LT |
174 | .bmap = hfsplus_bmap, |
175 | .direct_IO = hfsplus_direct_IO, | |
176 | .writepages = hfsplus_writepages, | |
177 | }; | |
178 | ||
e16404ed | 179 | const struct dentry_operations hfsplus_dentry_operations = { |
d45bce8f DG |
180 | .d_hash = hfsplus_hash_dentry, |
181 | .d_compare = hfsplus_compare_dentry, | |
182 | }; | |
183 | ||
2753cc28 AS |
184 | static void hfsplus_get_perms(struct inode *inode, |
185 | struct hfsplus_perm *perms, int dir) | |
1da177e4 | 186 | { |
dd73a01a | 187 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
1da177e4 LT |
188 | u16 mode; |
189 | ||
190 | mode = be16_to_cpu(perms->mode); | |
191 | ||
16525e3f EB |
192 | i_uid_write(inode, be32_to_cpu(perms->owner)); |
193 | if (!i_uid_read(inode) && !mode) | |
dd73a01a | 194 | inode->i_uid = sbi->uid; |
1da177e4 | 195 | |
16525e3f EB |
196 | i_gid_write(inode, be32_to_cpu(perms->group)); |
197 | if (!i_gid_read(inode) && !mode) | |
dd73a01a | 198 | inode->i_gid = sbi->gid; |
1da177e4 LT |
199 | |
200 | if (dir) { | |
dd73a01a | 201 | mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); |
1da177e4 LT |
202 | mode |= S_IFDIR; |
203 | } else if (!mode) | |
dd73a01a | 204 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); |
1da177e4 LT |
205 | inode->i_mode = mode; |
206 | ||
6af502de | 207 | HFSPLUS_I(inode)->userflags = perms->userflags; |
1da177e4 LT |
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 | ||
1da177e4 LT |
218 | static int hfsplus_file_open(struct inode *inode, struct file *file) |
219 | { | |
220 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 221 | inode = HFSPLUS_I(inode)->rsrc_inode; |
6e715294 AC |
222 | if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
223 | return -EOVERFLOW; | |
6af502de | 224 | atomic_inc(&HFSPLUS_I(inode)->opencnt); |
1da177e4 LT |
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)) | |
6af502de CH |
233 | inode = HFSPLUS_I(inode)->rsrc_inode; |
234 | if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { | |
5955102c | 235 | inode_lock(inode); |
1da177e4 LT |
236 | hfsplus_file_truncate(inode); |
237 | if (inode->i_flags & S_DEAD) { | |
dd73a01a CH |
238 | hfsplus_delete_cat(inode->i_ino, |
239 | HFSPLUS_SB(sb)->hidden_dir, NULL); | |
1da177e4 LT |
240 | hfsplus_delete_inode(inode); |
241 | } | |
5955102c | 242 | inode_unlock(inode); |
1da177e4 LT |
243 | } |
244 | return 0; | |
245 | } | |
246 | ||
549c7297 CB |
247 | static int hfsplus_setattr(struct user_namespace *mnt_userns, |
248 | struct dentry *dentry, struct iattr *attr) | |
d39aae9e | 249 | { |
2b0143b5 | 250 | struct inode *inode = d_inode(dentry); |
d39aae9e CH |
251 | int error; |
252 | ||
2f221d6f | 253 | error = setattr_prepare(&init_user_ns, dentry, attr); |
d39aae9e CH |
254 | if (error) |
255 | return error; | |
1025774c CH |
256 | |
257 | if ((attr->ia_valid & ATTR_SIZE) && | |
258 | attr->ia_size != i_size_read(inode)) { | |
562c72aa | 259 | inode_dio_wait(inode); |
059a704c SA |
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 | } | |
d5068485 MS |
266 | truncate_setsize(inode, attr->ia_size); |
267 | hfsplus_file_truncate(inode); | |
dc8844aa | 268 | inode->i_mtime = inode->i_ctime = current_time(inode); |
1025774c CH |
269 | } |
270 | ||
2f221d6f | 271 | setattr_copy(&init_user_ns, inode, attr); |
1025774c | 272 | mark_inode_dirty(inode); |
b4c1107c | 273 | |
1025774c | 274 | return 0; |
d39aae9e CH |
275 | } |
276 | ||
549c7297 CB |
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) | |
f93ca1ed EF |
280 | { |
281 | struct inode *inode = d_inode(path->dentry); | |
282 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); | |
283 | ||
c3eb8409 CCC |
284 | if (request_mask & STATX_BTIME) { |
285 | stat->result_mask |= STATX_BTIME; | |
286 | stat->btime = hfsp_mt2ut(hip->create_date); | |
287 | } | |
288 | ||
f93ca1ed EF |
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 | ||
0d56a451 | 299 | generic_fillattr(&init_user_ns, inode, stat); |
f93ca1ed EF |
300 | return 0; |
301 | } | |
302 | ||
02c24a82 JB |
303 | int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, |
304 | int datasync) | |
b5fc510c | 305 | { |
28146976 | 306 | struct inode *inode = file->f_mapping->host; |
e3494705 | 307 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
28146976 | 308 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
e3494705 | 309 | int error = 0, error2; |
b5fc510c | 310 | |
3b49c9a1 | 311 | error = file_write_and_wait_range(file, start, end); |
02c24a82 JB |
312 | if (error) |
313 | return error; | |
5955102c | 314 | inode_lock(inode); |
02c24a82 | 315 | |
28146976 CH |
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 | */ | |
e3494705 CH |
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)) { | |
2753cc28 AS |
328 | error2 = |
329 | filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); | |
e3494705 CH |
330 | if (!error) |
331 | error = error2; | |
332 | } | |
333 | ||
324ef39a VD |
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 { | |
d6142673 | 342 | pr_err("sync non-existent attributes tree\n"); |
324ef39a VD |
343 | } |
344 | } | |
345 | ||
e3494705 CH |
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 | ||
34a2d313 | 352 | if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) |
c6bf3f0e | 353 | blkdev_issue_flush(inode->i_sb->s_bdev); |
34a2d313 | 354 | |
5955102c | 355 | inode_unlock(inode); |
02c24a82 | 356 | |
28146976 | 357 | return error; |
b5fc510c AV |
358 | } |
359 | ||
92e1d5be | 360 | static const struct inode_operations hfsplus_file_inode_operations = { |
d39aae9e | 361 | .setattr = hfsplus_setattr, |
f93ca1ed | 362 | .getattr = hfsplus_getattr, |
1da177e4 | 363 | .listxattr = hfsplus_listxattr, |
9cbae748 MS |
364 | .fileattr_get = hfsplus_fileattr_get, |
365 | .fileattr_set = hfsplus_fileattr_set, | |
1da177e4 LT |
366 | }; |
367 | ||
4b6f5d20 | 368 | static const struct file_operations hfsplus_file_operations = { |
20b7643d | 369 | .llseek = generic_file_llseek, |
aad4f8bb | 370 | .read_iter = generic_file_read_iter, |
8174202b | 371 | .write_iter = generic_file_write_iter, |
1da177e4 | 372 | .mmap = generic_file_mmap, |
5ffc4ef4 | 373 | .splice_read = generic_file_splice_read, |
b5fc510c | 374 | .fsync = hfsplus_file_fsync, |
1da177e4 LT |
375 | .open = hfsplus_file_open, |
376 | .release = hfsplus_file_release, | |
7cc4bcc6 | 377 | .unlocked_ioctl = hfsplus_ioctl, |
1da177e4 LT |
378 | }; |
379 | ||
b0cd38c7 EF |
380 | struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir, |
381 | umode_t mode) | |
1da177e4 | 382 | { |
dd73a01a | 383 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
1da177e4 | 384 | struct inode *inode = new_inode(sb); |
6af502de | 385 | struct hfsplus_inode_info *hip; |
dd73a01a | 386 | |
1da177e4 LT |
387 | if (!inode) |
388 | return NULL; | |
389 | ||
dd73a01a | 390 | inode->i_ino = sbi->next_cnid++; |
21cb47be | 391 | inode_init_owner(&init_user_ns, inode, dir, mode); |
bfe86848 | 392 | set_nlink(inode, 1); |
02027d42 | 393 | inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); |
6af502de CH |
394 | |
395 | hip = HFSPLUS_I(inode); | |
396 | INIT_LIST_HEAD(&hip->open_dir_list); | |
323ee8fc | 397 | spin_lock_init(&hip->open_dir_lock); |
6af502de CH |
398 | mutex_init(&hip->extents_lock); |
399 | atomic_set(&hip->opencnt, 0); | |
b33b7921 | 400 | hip->extent_state = 0; |
6af502de | 401 | hip->flags = 0; |
f3922382 | 402 | hip->userflags = 0; |
d7d673a5 | 403 | hip->subfolders = 0; |
6af502de CH |
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; | |
1da177e4 LT |
413 | if (S_ISDIR(inode->i_mode)) { |
414 | inode->i_size = 2; | |
dd73a01a | 415 | sbi->folder_count++; |
1da177e4 LT |
416 | inode->i_op = &hfsplus_dir_inode_operations; |
417 | inode->i_fop = &hfsplus_dir_operations; | |
418 | } else if (S_ISREG(inode->i_mode)) { | |
dd73a01a | 419 | sbi->file_count++; |
1da177e4 LT |
420 | inode->i_op = &hfsplus_file_inode_operations; |
421 | inode->i_fop = &hfsplus_file_operations; | |
422 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 423 | hip->clump_blocks = sbi->data_clump_blocks; |
1da177e4 | 424 | } else if (S_ISLNK(inode->i_mode)) { |
dd73a01a | 425 | sbi->file_count++; |
1da177e4 | 426 | inode->i_op = &page_symlink_inode_operations; |
21fc61c7 | 427 | inode_nohighmem(inode); |
1da177e4 | 428 | inode->i_mapping->a_ops = &hfsplus_aops; |
6af502de | 429 | hip->clump_blocks = 1; |
1da177e4 | 430 | } else |
dd73a01a | 431 | sbi->file_count++; |
1da177e4 LT |
432 | insert_inode_hash(inode); |
433 | mark_inode_dirty(inode); | |
9e6c5829 | 434 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
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)) { | |
dd73a01a | 444 | HFSPLUS_SB(sb)->folder_count--; |
9e6c5829 | 445 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
446 | return; |
447 | } | |
dd73a01a | 448 | HFSPLUS_SB(sb)->file_count--; |
1da177e4 LT |
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 | } | |
9e6c5829 | 458 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
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; | |
dd73a01a | 464 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
6af502de | 465 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
1da177e4 LT |
466 | u32 count; |
467 | int i; | |
468 | ||
6af502de | 469 | memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); |
1da177e4 LT |
470 | for (count = 0, i = 0; i < 8; i++) |
471 | count += be32_to_cpu(fork->extents[i].block_count); | |
6af502de CH |
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 = | |
dd73a01a | 483 | be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; |
6af502de CH |
484 | if (!hip->clump_blocks) { |
485 | hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? | |
dd73a01a CH |
486 | sbi->rsrc_clump_blocks : |
487 | sbi->data_clump_blocks; | |
488 | } | |
1da177e4 LT |
489 | } |
490 | ||
2753cc28 AS |
491 | void hfsplus_inode_write_fork(struct inode *inode, |
492 | struct hfsplus_fork_raw *fork) | |
1da177e4 | 493 | { |
6af502de | 494 | memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, |
1da177e4 LT |
495 | sizeof(hfsplus_extent_rec)); |
496 | fork->total_size = cpu_to_be64(inode->i_size); | |
6af502de | 497 | fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); |
1da177e4 LT |
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 | ||
f6089ff8 | 508 | HFSPLUS_I(inode)->linkid = 0; |
1da177e4 LT |
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); | |
bfe86848 | 517 | set_nlink(inode, 1); |
1da177e4 | 518 | inode->i_size = 2 + be32_to_cpu(folder->valence); |
4ddfc3dc AB |
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); | |
6af502de CH |
522 | HFSPLUS_I(inode)->create_date = folder->create_date; |
523 | HFSPLUS_I(inode)->fs_blocks = 0; | |
d7d673a5 SA |
524 | if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { |
525 | HFSPLUS_I(inode)->subfolders = | |
526 | be32_to_cpu(folder->subfolders); | |
527 | } | |
1da177e4 LT |
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 | ||
b33b7921 CH |
538 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? |
539 | &file->rsrc_fork : &file->data_fork); | |
1da177e4 | 540 | hfsplus_get_perms(inode, &file->permissions, 0); |
bfe86848 | 541 | set_nlink(inode, 1); |
1da177e4 LT |
542 | if (S_ISREG(inode->i_mode)) { |
543 | if (file->permissions.dev) | |
bfe86848 MS |
544 | set_nlink(inode, |
545 | be32_to_cpu(file->permissions.dev)); | |
1da177e4 LT |
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; | |
21fc61c7 | 551 | inode_nohighmem(inode); |
1da177e4 LT |
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 | } | |
4ddfc3dc AB |
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); | |
6af502de | 560 | HFSPLUS_I(inode)->create_date = file->create_date; |
1da177e4 | 561 | } else { |
d6142673 | 562 | pr_err("bad catalog entry used to create inode\n"); |
1da177e4 LT |
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)) | |
6af502de | 575 | main_inode = HFSPLUS_I(inode)->rsrc_inode; |
1da177e4 LT |
576 | |
577 | if (!main_inode->i_nlink) | |
578 | return 0; | |
579 | ||
dd73a01a | 580 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) |
1da177e4 LT |
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? */ | |
90e61690 | 596 | hfsplus_cat_set_perms(inode, &folder->permissions); |
1da177e4 LT |
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); | |
d7d673a5 SA |
601 | if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { |
602 | folder->subfolders = | |
603 | cpu_to_be32(HFSPLUS_I(inode)->subfolders); | |
604 | } | |
1da177e4 LT |
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); | |
90e61690 | 622 | hfsplus_cat_set_perms(inode, &file->permissions); |
2753cc28 AS |
623 | if (HFSPLUS_FLG_IMMUTABLE & |
624 | (file->permissions.rootflags | | |
625 | file->permissions.userflags)) | |
1da177e4 LT |
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 | } | |
e3494705 CH |
635 | |
636 | set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); | |
1da177e4 LT |
637 | out: |
638 | hfs_find_exit(&fd); | |
639 | return 0; | |
640 | } | |
9cbae748 MS |
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 | } |