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 | ||
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 | ||
07a31f72 MWO |
46 | int hfsplus_write_begin(struct file *file, struct address_space *mapping, |
47 | loff_t pos, unsigned len, struct page **pagep, void **fsdata) | |
1da177e4 | 48 | { |
282dc178 CH |
49 | int ret; |
50 | ||
7c0efc62 | 51 | *pagep = NULL; |
be3bbbc5 | 52 | ret = cont_write_begin(file, mapping, pos, len, pagep, fsdata, |
7c0efc62 | 53 | hfsplus_get_block, |
6af502de | 54 | &HFSPLUS_I(mapping->host)->phys_size); |
d5068485 MS |
55 | if (unlikely(ret)) |
56 | hfsplus_write_failed(mapping, pos + len); | |
282dc178 CH |
57 | |
58 | return ret; | |
1da177e4 LT |
59 | } |
60 | ||
61 | static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) | |
62 | { | |
63 | return generic_block_bmap(mapping, block, hfsplus_get_block); | |
64 | } | |
65 | ||
7ffce3d9 | 66 | static bool hfsplus_release_folio(struct folio *folio, gfp_t mask) |
1da177e4 | 67 | { |
7ffce3d9 | 68 | struct inode *inode = folio->mapping->host; |
1da177e4 LT |
69 | struct super_block *sb = inode->i_sb; |
70 | struct hfs_btree *tree; | |
71 | struct hfs_bnode *node; | |
72 | u32 nidx; | |
7ffce3d9 MWO |
73 | int i; |
74 | bool res = true; | |
1da177e4 LT |
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(); | |
7ffce3d9 | 88 | return false; |
1da177e4 | 89 | } |
70632249 | 90 | if (!tree) |
7ffce3d9 | 91 | return false; |
09cbfeaf | 92 | if (tree->node_size >= PAGE_SIZE) { |
7ffce3d9 | 93 | nidx = folio->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)) | |
7ffce3d9 | 100 | res = false; |
1da177e4 LT |
101 | if (res && node) { |
102 | hfs_bnode_unhash(node); | |
103 | hfs_bnode_free(node); | |
104 | } | |
105 | spin_unlock(&tree->hash_lock); | |
106 | } else { | |
7ffce3d9 | 107 | nidx = folio->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)) { | |
7ffce3d9 | 116 | res = false; |
1da177e4 LT |
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 | } | |
68189fef | 124 | return res ? try_to_free_buffers(folio) : false; |
1da177e4 LT |
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 = { |
e621900a | 159 | .dirty_folio = block_dirty_folio, |
7ba13abb | 160 | .invalidate_folio = block_invalidate_folio, |
2c69e205 | 161 | .read_folio = hfsplus_read_folio, |
1da177e4 | 162 | .writepage = hfsplus_writepage, |
7c0efc62 NP |
163 | .write_begin = hfsplus_write_begin, |
164 | .write_end = generic_write_end, | |
1da177e4 | 165 | .bmap = hfsplus_bmap, |
7ffce3d9 | 166 | .release_folio = hfsplus_release_folio, |
1da177e4 LT |
167 | }; |
168 | ||
f5e54d6e | 169 | const struct address_space_operations hfsplus_aops = { |
e621900a | 170 | .dirty_folio = block_dirty_folio, |
7ba13abb | 171 | .invalidate_folio = block_invalidate_folio, |
2c69e205 | 172 | .read_folio = hfsplus_read_folio, |
7c0efc62 NP |
173 | .write_begin = hfsplus_write_begin, |
174 | .write_end = generic_write_end, | |
1da177e4 LT |
175 | .bmap = hfsplus_bmap, |
176 | .direct_IO = hfsplus_direct_IO, | |
177 | .writepages = hfsplus_writepages, | |
12f9b9a7 | 178 | .migrate_folio = buffer_migrate_folio, |
1da177e4 LT |
179 | }; |
180 | ||
e16404ed | 181 | const struct dentry_operations hfsplus_dentry_operations = { |
d45bce8f DG |
182 | .d_hash = hfsplus_hash_dentry, |
183 | .d_compare = hfsplus_compare_dentry, | |
184 | }; | |
185 | ||
2753cc28 AS |
186 | static void hfsplus_get_perms(struct inode *inode, |
187 | struct hfsplus_perm *perms, int dir) | |
1da177e4 | 188 | { |
dd73a01a | 189 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
1da177e4 LT |
190 | u16 mode; |
191 | ||
192 | mode = be16_to_cpu(perms->mode); | |
193 | ||
16525e3f | 194 | i_uid_write(inode, be32_to_cpu(perms->owner)); |
9f2b5deb | 195 | if ((test_bit(HFSPLUS_SB_UID, &sbi->flags)) || (!i_uid_read(inode) && !mode)) |
dd73a01a | 196 | inode->i_uid = sbi->uid; |
1da177e4 | 197 | |
16525e3f | 198 | i_gid_write(inode, be32_to_cpu(perms->group)); |
9f2b5deb | 199 | if ((test_bit(HFSPLUS_SB_GID, &sbi->flags)) || (!i_gid_read(inode) && !mode)) |
dd73a01a | 200 | inode->i_gid = sbi->gid; |
1da177e4 LT |
201 | |
202 | if (dir) { | |
dd73a01a | 203 | mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); |
1da177e4 LT |
204 | mode |= S_IFDIR; |
205 | } else if (!mode) | |
dd73a01a | 206 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); |
1da177e4 LT |
207 | inode->i_mode = mode; |
208 | ||
6af502de | 209 | HFSPLUS_I(inode)->userflags = perms->userflags; |
1da177e4 LT |
210 | if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) |
211 | inode->i_flags |= S_IMMUTABLE; | |
212 | else | |
213 | inode->i_flags &= ~S_IMMUTABLE; | |
214 | if (perms->rootflags & HFSPLUS_FLG_APPEND) | |
215 | inode->i_flags |= S_APPEND; | |
216 | else | |
217 | inode->i_flags &= ~S_APPEND; | |
218 | } | |
219 | ||
1da177e4 LT |
220 | static int hfsplus_file_open(struct inode *inode, struct file *file) |
221 | { | |
222 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 223 | inode = HFSPLUS_I(inode)->rsrc_inode; |
6e715294 AC |
224 | if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
225 | return -EOVERFLOW; | |
6af502de | 226 | atomic_inc(&HFSPLUS_I(inode)->opencnt); |
1da177e4 LT |
227 | return 0; |
228 | } | |
229 | ||
230 | static int hfsplus_file_release(struct inode *inode, struct file *file) | |
231 | { | |
232 | struct super_block *sb = inode->i_sb; | |
233 | ||
234 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de CH |
235 | inode = HFSPLUS_I(inode)->rsrc_inode; |
236 | if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { | |
5955102c | 237 | inode_lock(inode); |
1da177e4 LT |
238 | hfsplus_file_truncate(inode); |
239 | if (inode->i_flags & S_DEAD) { | |
dd73a01a CH |
240 | hfsplus_delete_cat(inode->i_ino, |
241 | HFSPLUS_SB(sb)->hidden_dir, NULL); | |
1da177e4 LT |
242 | hfsplus_delete_inode(inode); |
243 | } | |
5955102c | 244 | inode_unlock(inode); |
1da177e4 LT |
245 | } |
246 | return 0; | |
247 | } | |
248 | ||
c1632a0f | 249 | static int hfsplus_setattr(struct mnt_idmap *idmap, |
549c7297 | 250 | struct dentry *dentry, struct iattr *attr) |
d39aae9e | 251 | { |
2b0143b5 | 252 | struct inode *inode = d_inode(dentry); |
d39aae9e CH |
253 | int error; |
254 | ||
c1632a0f | 255 | error = setattr_prepare(&nop_mnt_idmap, dentry, attr); |
d39aae9e CH |
256 | if (error) |
257 | return error; | |
1025774c CH |
258 | |
259 | if ((attr->ia_valid & ATTR_SIZE) && | |
260 | attr->ia_size != i_size_read(inode)) { | |
562c72aa | 261 | inode_dio_wait(inode); |
059a704c SA |
262 | if (attr->ia_size > inode->i_size) { |
263 | error = generic_cont_expand_simple(inode, | |
264 | attr->ia_size); | |
265 | if (error) | |
266 | return error; | |
267 | } | |
d5068485 MS |
268 | truncate_setsize(inode, attr->ia_size); |
269 | hfsplus_file_truncate(inode); | |
101fa821 | 270 | inode->i_mtime = inode_set_ctime_current(inode); |
1025774c CH |
271 | } |
272 | ||
c1632a0f | 273 | setattr_copy(&nop_mnt_idmap, inode, attr); |
1025774c | 274 | mark_inode_dirty(inode); |
b4c1107c | 275 | |
1025774c | 276 | return 0; |
d39aae9e CH |
277 | } |
278 | ||
b74d24f7 | 279 | int hfsplus_getattr(struct mnt_idmap *idmap, const struct path *path, |
549c7297 CB |
280 | struct kstat *stat, u32 request_mask, |
281 | unsigned int query_flags) | |
f93ca1ed EF |
282 | { |
283 | struct inode *inode = d_inode(path->dentry); | |
284 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); | |
285 | ||
c3eb8409 CCC |
286 | if (request_mask & STATX_BTIME) { |
287 | stat->result_mask |= STATX_BTIME; | |
288 | stat->btime = hfsp_mt2ut(hip->create_date); | |
289 | } | |
290 | ||
f93ca1ed EF |
291 | if (inode->i_flags & S_APPEND) |
292 | stat->attributes |= STATX_ATTR_APPEND; | |
293 | if (inode->i_flags & S_IMMUTABLE) | |
294 | stat->attributes |= STATX_ATTR_IMMUTABLE; | |
295 | if (hip->userflags & HFSPLUS_FLG_NODUMP) | |
296 | stat->attributes |= STATX_ATTR_NODUMP; | |
297 | ||
298 | stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE | | |
299 | STATX_ATTR_NODUMP; | |
300 | ||
0d72b928 | 301 | generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); |
f93ca1ed EF |
302 | return 0; |
303 | } | |
304 | ||
02c24a82 JB |
305 | int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, |
306 | int datasync) | |
b5fc510c | 307 | { |
28146976 | 308 | struct inode *inode = file->f_mapping->host; |
e3494705 | 309 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
28146976 | 310 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
e3494705 | 311 | int error = 0, error2; |
b5fc510c | 312 | |
3b49c9a1 | 313 | error = file_write_and_wait_range(file, start, end); |
02c24a82 JB |
314 | if (error) |
315 | return error; | |
5955102c | 316 | inode_lock(inode); |
02c24a82 | 317 | |
28146976 CH |
318 | /* |
319 | * Sync inode metadata into the catalog and extent trees. | |
320 | */ | |
321 | sync_inode_metadata(inode, 1); | |
322 | ||
323 | /* | |
324 | * And explicitly write out the btrees. | |
325 | */ | |
e3494705 CH |
326 | if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) |
327 | error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); | |
328 | ||
329 | if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { | |
2753cc28 AS |
330 | error2 = |
331 | filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); | |
e3494705 CH |
332 | if (!error) |
333 | error = error2; | |
334 | } | |
335 | ||
324ef39a VD |
336 | if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) { |
337 | if (sbi->attr_tree) { | |
338 | error2 = | |
339 | filemap_write_and_wait( | |
340 | sbi->attr_tree->inode->i_mapping); | |
341 | if (!error) | |
342 | error = error2; | |
343 | } else { | |
d6142673 | 344 | pr_err("sync non-existent attributes tree\n"); |
324ef39a VD |
345 | } |
346 | } | |
347 | ||
e3494705 CH |
348 | if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { |
349 | error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); | |
350 | if (!error) | |
351 | error = error2; | |
352 | } | |
353 | ||
34a2d313 | 354 | if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) |
c6bf3f0e | 355 | blkdev_issue_flush(inode->i_sb->s_bdev); |
34a2d313 | 356 | |
5955102c | 357 | inode_unlock(inode); |
02c24a82 | 358 | |
28146976 | 359 | return error; |
b5fc510c AV |
360 | } |
361 | ||
92e1d5be | 362 | static const struct inode_operations hfsplus_file_inode_operations = { |
d39aae9e | 363 | .setattr = hfsplus_setattr, |
f93ca1ed | 364 | .getattr = hfsplus_getattr, |
1da177e4 | 365 | .listxattr = hfsplus_listxattr, |
9cbae748 MS |
366 | .fileattr_get = hfsplus_fileattr_get, |
367 | .fileattr_set = hfsplus_fileattr_set, | |
1da177e4 LT |
368 | }; |
369 | ||
4b6f5d20 | 370 | static const struct file_operations hfsplus_file_operations = { |
20b7643d | 371 | .llseek = generic_file_llseek, |
aad4f8bb | 372 | .read_iter = generic_file_read_iter, |
8174202b | 373 | .write_iter = generic_file_write_iter, |
1da177e4 | 374 | .mmap = generic_file_mmap, |
2cb1e089 | 375 | .splice_read = filemap_splice_read, |
b5fc510c | 376 | .fsync = hfsplus_file_fsync, |
1da177e4 LT |
377 | .open = hfsplus_file_open, |
378 | .release = hfsplus_file_release, | |
7cc4bcc6 | 379 | .unlocked_ioctl = hfsplus_ioctl, |
1da177e4 LT |
380 | }; |
381 | ||
b0cd38c7 EF |
382 | struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir, |
383 | umode_t mode) | |
1da177e4 | 384 | { |
dd73a01a | 385 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
1da177e4 | 386 | struct inode *inode = new_inode(sb); |
6af502de | 387 | struct hfsplus_inode_info *hip; |
dd73a01a | 388 | |
1da177e4 LT |
389 | if (!inode) |
390 | return NULL; | |
391 | ||
dd73a01a | 392 | inode->i_ino = sbi->next_cnid++; |
f2d40141 | 393 | inode_init_owner(&nop_mnt_idmap, inode, dir, mode); |
bfe86848 | 394 | set_nlink(inode, 1); |
101fa821 | 395 | inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); |
6af502de CH |
396 | |
397 | hip = HFSPLUS_I(inode); | |
398 | INIT_LIST_HEAD(&hip->open_dir_list); | |
323ee8fc | 399 | spin_lock_init(&hip->open_dir_lock); |
6af502de CH |
400 | mutex_init(&hip->extents_lock); |
401 | atomic_set(&hip->opencnt, 0); | |
b33b7921 | 402 | hip->extent_state = 0; |
6af502de | 403 | hip->flags = 0; |
f3922382 | 404 | hip->userflags = 0; |
d7d673a5 | 405 | hip->subfolders = 0; |
6af502de CH |
406 | memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); |
407 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
408 | hip->alloc_blocks = 0; | |
409 | hip->first_blocks = 0; | |
410 | hip->cached_start = 0; | |
411 | hip->cached_blocks = 0; | |
412 | hip->phys_size = 0; | |
413 | hip->fs_blocks = 0; | |
414 | hip->rsrc_inode = NULL; | |
1da177e4 LT |
415 | if (S_ISDIR(inode->i_mode)) { |
416 | inode->i_size = 2; | |
dd73a01a | 417 | sbi->folder_count++; |
1da177e4 LT |
418 | inode->i_op = &hfsplus_dir_inode_operations; |
419 | inode->i_fop = &hfsplus_dir_operations; | |
420 | } else if (S_ISREG(inode->i_mode)) { | |
dd73a01a | 421 | sbi->file_count++; |
1da177e4 LT |
422 | inode->i_op = &hfsplus_file_inode_operations; |
423 | inode->i_fop = &hfsplus_file_operations; | |
424 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 425 | hip->clump_blocks = sbi->data_clump_blocks; |
1da177e4 | 426 | } else if (S_ISLNK(inode->i_mode)) { |
dd73a01a | 427 | sbi->file_count++; |
1da177e4 | 428 | inode->i_op = &page_symlink_inode_operations; |
21fc61c7 | 429 | inode_nohighmem(inode); |
1da177e4 | 430 | inode->i_mapping->a_ops = &hfsplus_aops; |
6af502de | 431 | hip->clump_blocks = 1; |
1da177e4 | 432 | } else |
dd73a01a | 433 | sbi->file_count++; |
1da177e4 LT |
434 | insert_inode_hash(inode); |
435 | mark_inode_dirty(inode); | |
9e6c5829 | 436 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
437 | |
438 | return inode; | |
439 | } | |
440 | ||
441 | void hfsplus_delete_inode(struct inode *inode) | |
442 | { | |
443 | struct super_block *sb = inode->i_sb; | |
444 | ||
445 | if (S_ISDIR(inode->i_mode)) { | |
dd73a01a | 446 | HFSPLUS_SB(sb)->folder_count--; |
9e6c5829 | 447 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
448 | return; |
449 | } | |
dd73a01a | 450 | HFSPLUS_SB(sb)->file_count--; |
1da177e4 LT |
451 | if (S_ISREG(inode->i_mode)) { |
452 | if (!inode->i_nlink) { | |
453 | inode->i_size = 0; | |
454 | hfsplus_file_truncate(inode); | |
455 | } | |
456 | } else if (S_ISLNK(inode->i_mode)) { | |
457 | inode->i_size = 0; | |
458 | hfsplus_file_truncate(inode); | |
459 | } | |
9e6c5829 | 460 | hfsplus_mark_mdb_dirty(sb); |
1da177e4 LT |
461 | } |
462 | ||
463 | void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
464 | { | |
465 | struct super_block *sb = inode->i_sb; | |
dd73a01a | 466 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
6af502de | 467 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
1da177e4 LT |
468 | u32 count; |
469 | int i; | |
470 | ||
6af502de | 471 | memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); |
1da177e4 LT |
472 | for (count = 0, i = 0; i < 8; i++) |
473 | count += be32_to_cpu(fork->extents[i].block_count); | |
6af502de CH |
474 | hip->first_blocks = count; |
475 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
476 | hip->cached_start = 0; | |
477 | hip->cached_blocks = 0; | |
478 | ||
479 | hip->alloc_blocks = be32_to_cpu(fork->total_blocks); | |
480 | hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); | |
481 | hip->fs_blocks = | |
482 | (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
483 | inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); | |
484 | hip->clump_blocks = | |
dd73a01a | 485 | be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; |
6af502de CH |
486 | if (!hip->clump_blocks) { |
487 | hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? | |
dd73a01a CH |
488 | sbi->rsrc_clump_blocks : |
489 | sbi->data_clump_blocks; | |
490 | } | |
1da177e4 LT |
491 | } |
492 | ||
2753cc28 AS |
493 | void hfsplus_inode_write_fork(struct inode *inode, |
494 | struct hfsplus_fork_raw *fork) | |
1da177e4 | 495 | { |
6af502de | 496 | memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, |
1da177e4 LT |
497 | sizeof(hfsplus_extent_rec)); |
498 | fork->total_size = cpu_to_be64(inode->i_size); | |
6af502de | 499 | fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); |
1da177e4 LT |
500 | } |
501 | ||
502 | int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) | |
503 | { | |
504 | hfsplus_cat_entry entry; | |
505 | int res = 0; | |
506 | u16 type; | |
507 | ||
508 | type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); | |
509 | ||
f6089ff8 | 510 | HFSPLUS_I(inode)->linkid = 0; |
1da177e4 LT |
511 | if (type == HFSPLUS_FOLDER) { |
512 | struct hfsplus_cat_folder *folder = &entry.folder; | |
513 | ||
81b21c0f TH |
514 | if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) { |
515 | pr_err("bad catalog folder entry\n"); | |
516 | res = -EIO; | |
517 | goto out; | |
518 | } | |
1da177e4 LT |
519 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, |
520 | sizeof(struct hfsplus_cat_folder)); | |
521 | hfsplus_get_perms(inode, &folder->permissions, 1); | |
bfe86848 | 522 | set_nlink(inode, 1); |
1da177e4 | 523 | inode->i_size = 2 + be32_to_cpu(folder->valence); |
4ddfc3dc AB |
524 | inode->i_atime = hfsp_mt2ut(folder->access_date); |
525 | inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); | |
101fa821 JL |
526 | inode_set_ctime_to_ts(inode, |
527 | hfsp_mt2ut(folder->attribute_mod_date)); | |
6af502de CH |
528 | HFSPLUS_I(inode)->create_date = folder->create_date; |
529 | HFSPLUS_I(inode)->fs_blocks = 0; | |
d7d673a5 SA |
530 | if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { |
531 | HFSPLUS_I(inode)->subfolders = | |
532 | be32_to_cpu(folder->subfolders); | |
533 | } | |
1da177e4 LT |
534 | inode->i_op = &hfsplus_dir_inode_operations; |
535 | inode->i_fop = &hfsplus_dir_operations; | |
536 | } else if (type == HFSPLUS_FILE) { | |
537 | struct hfsplus_cat_file *file = &entry.file; | |
538 | ||
81b21c0f TH |
539 | if (fd->entrylength < sizeof(struct hfsplus_cat_file)) { |
540 | pr_err("bad catalog file entry\n"); | |
541 | res = -EIO; | |
542 | goto out; | |
543 | } | |
1da177e4 LT |
544 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, |
545 | sizeof(struct hfsplus_cat_file)); | |
546 | ||
b33b7921 CH |
547 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? |
548 | &file->rsrc_fork : &file->data_fork); | |
1da177e4 | 549 | hfsplus_get_perms(inode, &file->permissions, 0); |
bfe86848 | 550 | set_nlink(inode, 1); |
1da177e4 LT |
551 | if (S_ISREG(inode->i_mode)) { |
552 | if (file->permissions.dev) | |
bfe86848 MS |
553 | set_nlink(inode, |
554 | be32_to_cpu(file->permissions.dev)); | |
1da177e4 LT |
555 | inode->i_op = &hfsplus_file_inode_operations; |
556 | inode->i_fop = &hfsplus_file_operations; | |
557 | inode->i_mapping->a_ops = &hfsplus_aops; | |
558 | } else if (S_ISLNK(inode->i_mode)) { | |
559 | inode->i_op = &page_symlink_inode_operations; | |
21fc61c7 | 560 | inode_nohighmem(inode); |
1da177e4 LT |
561 | inode->i_mapping->a_ops = &hfsplus_aops; |
562 | } else { | |
563 | init_special_inode(inode, inode->i_mode, | |
564 | be32_to_cpu(file->permissions.dev)); | |
565 | } | |
4ddfc3dc AB |
566 | inode->i_atime = hfsp_mt2ut(file->access_date); |
567 | inode->i_mtime = hfsp_mt2ut(file->content_mod_date); | |
101fa821 JL |
568 | inode_set_ctime_to_ts(inode, |
569 | hfsp_mt2ut(file->attribute_mod_date)); | |
6af502de | 570 | HFSPLUS_I(inode)->create_date = file->create_date; |
1da177e4 | 571 | } else { |
d6142673 | 572 | pr_err("bad catalog entry used to create inode\n"); |
1da177e4 LT |
573 | res = -EIO; |
574 | } | |
81b21c0f | 575 | out: |
1da177e4 LT |
576 | return res; |
577 | } | |
578 | ||
579 | int hfsplus_cat_write_inode(struct inode *inode) | |
580 | { | |
581 | struct inode *main_inode = inode; | |
582 | struct hfs_find_data fd; | |
583 | hfsplus_cat_entry entry; | |
81b21c0f | 584 | int res = 0; |
1da177e4 LT |
585 | |
586 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 587 | main_inode = HFSPLUS_I(inode)->rsrc_inode; |
1da177e4 LT |
588 | |
589 | if (!main_inode->i_nlink) | |
590 | return 0; | |
591 | ||
dd73a01a | 592 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) |
1da177e4 LT |
593 | /* panic? */ |
594 | return -EIO; | |
595 | ||
596 | if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) | |
597 | /* panic? */ | |
598 | goto out; | |
599 | ||
600 | if (S_ISDIR(main_inode->i_mode)) { | |
601 | struct hfsplus_cat_folder *folder = &entry.folder; | |
602 | ||
81b21c0f TH |
603 | if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) { |
604 | pr_err("bad catalog folder entry\n"); | |
605 | res = -EIO; | |
606 | goto out; | |
607 | } | |
1da177e4 LT |
608 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, |
609 | sizeof(struct hfsplus_cat_folder)); | |
610 | /* simple node checks? */ | |
90e61690 | 611 | hfsplus_cat_set_perms(inode, &folder->permissions); |
1da177e4 LT |
612 | folder->access_date = hfsp_ut2mt(inode->i_atime); |
613 | folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
101fa821 | 614 | folder->attribute_mod_date = hfsp_ut2mt(inode_get_ctime(inode)); |
1da177e4 | 615 | folder->valence = cpu_to_be32(inode->i_size - 2); |
d7d673a5 SA |
616 | if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { |
617 | folder->subfolders = | |
618 | cpu_to_be32(HFSPLUS_I(inode)->subfolders); | |
619 | } | |
1da177e4 LT |
620 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, |
621 | sizeof(struct hfsplus_cat_folder)); | |
622 | } else if (HFSPLUS_IS_RSRC(inode)) { | |
623 | struct hfsplus_cat_file *file = &entry.file; | |
624 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
625 | sizeof(struct hfsplus_cat_file)); | |
626 | hfsplus_inode_write_fork(inode, &file->rsrc_fork); | |
627 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
628 | sizeof(struct hfsplus_cat_file)); | |
629 | } else { | |
630 | struct hfsplus_cat_file *file = &entry.file; | |
631 | ||
81b21c0f TH |
632 | if (fd.entrylength < sizeof(struct hfsplus_cat_file)) { |
633 | pr_err("bad catalog file entry\n"); | |
634 | res = -EIO; | |
635 | goto out; | |
636 | } | |
1da177e4 LT |
637 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, |
638 | sizeof(struct hfsplus_cat_file)); | |
639 | hfsplus_inode_write_fork(inode, &file->data_fork); | |
90e61690 | 640 | hfsplus_cat_set_perms(inode, &file->permissions); |
2753cc28 AS |
641 | if (HFSPLUS_FLG_IMMUTABLE & |
642 | (file->permissions.rootflags | | |
643 | file->permissions.userflags)) | |
1da177e4 LT |
644 | file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); |
645 | else | |
646 | file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); | |
647 | file->access_date = hfsp_ut2mt(inode->i_atime); | |
648 | file->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
101fa821 | 649 | file->attribute_mod_date = hfsp_ut2mt(inode_get_ctime(inode)); |
1da177e4 LT |
650 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, |
651 | sizeof(struct hfsplus_cat_file)); | |
652 | } | |
e3494705 CH |
653 | |
654 | set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); | |
1da177e4 LT |
655 | out: |
656 | hfs_find_exit(&fd); | |
81b21c0f | 657 | return res; |
1da177e4 | 658 | } |
9cbae748 MS |
659 | |
660 | int hfsplus_fileattr_get(struct dentry *dentry, struct fileattr *fa) | |
661 | { | |
662 | struct inode *inode = d_inode(dentry); | |
663 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); | |
664 | unsigned int flags = 0; | |
665 | ||
666 | if (inode->i_flags & S_IMMUTABLE) | |
667 | flags |= FS_IMMUTABLE_FL; | |
668 | if (inode->i_flags & S_APPEND) | |
669 | flags |= FS_APPEND_FL; | |
670 | if (hip->userflags & HFSPLUS_FLG_NODUMP) | |
671 | flags |= FS_NODUMP_FL; | |
672 | ||
673 | fileattr_fill_flags(fa, flags); | |
674 | ||
675 | return 0; | |
676 | } | |
677 | ||
8782a9ae | 678 | int hfsplus_fileattr_set(struct mnt_idmap *idmap, |
9cbae748 MS |
679 | struct dentry *dentry, struct fileattr *fa) |
680 | { | |
681 | struct inode *inode = d_inode(dentry); | |
682 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); | |
683 | unsigned int new_fl = 0; | |
684 | ||
685 | if (fileattr_has_fsx(fa)) | |
686 | return -EOPNOTSUPP; | |
687 | ||
688 | /* don't silently ignore unsupported ext2 flags */ | |
689 | if (fa->flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) | |
690 | return -EOPNOTSUPP; | |
691 | ||
692 | if (fa->flags & FS_IMMUTABLE_FL) | |
693 | new_fl |= S_IMMUTABLE; | |
694 | ||
695 | if (fa->flags & FS_APPEND_FL) | |
696 | new_fl |= S_APPEND; | |
697 | ||
698 | inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND); | |
699 | ||
700 | if (fa->flags & FS_NODUMP_FL) | |
701 | hip->userflags |= HFSPLUS_FLG_NODUMP; | |
702 | else | |
703 | hip->userflags &= ~HFSPLUS_FLG_NODUMP; | |
704 | ||
101fa821 | 705 | inode_set_ctime_current(inode); |
9cbae748 MS |
706 | mark_inode_dirty(inode); |
707 | ||
708 | return 0; | |
709 | } |