blob: a8df651747f0eadaa8af44dffda657f2d64aea3d [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/fs/hfsplus/inode.c
3 *
4 * Copyright (C) 2001
5 * Brad Boyer (flar@allandria.com)
6 * (C) 2003 Ardis Technologies <roman@ardistech.com>
7 *
8 * Inode handling routines
9 */
10
Christoph Hellwig34a2d312010-11-23 14:38:21 +010011#include <linux/blkdev.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070012#include <linux/mm.h>
13#include <linux/fs.h>
14#include <linux/pagemap.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <linux/mpage.h>
Alexey Dobriyane8edc6e2007-05-21 01:22:52 +040016#include <linux/sched.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070017
18#include "hfsplus_fs.h"
19#include "hfsplus_raw.h"
20
21static int hfsplus_readpage(struct file *file, struct page *page)
22{
Linus Torvalds1da177e2005-04-16 15:20:36 -070023 return block_read_full_page(page, hfsplus_get_block);
24}
25
26static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
27{
Linus Torvalds1da177e2005-04-16 15:20:36 -070028 return block_write_full_page(page, hfsplus_get_block, wbc);
29}
30
Nick Piggin7c0efc62007-10-16 01:25:09 -070031static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
32 loff_t pos, unsigned len, unsigned flags,
33 struct page **pagep, void **fsdata)
Linus Torvalds1da177e2005-04-16 15:20:36 -070034{
Christoph Hellwig282dc172010-06-04 11:29:55 +020035 int ret;
36
Nick Piggin7c0efc62007-10-16 01:25:09 -070037 *pagep = NULL;
Christoph Hellwig282dc172010-06-04 11:29:55 +020038 ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
Nick Piggin7c0efc62007-10-16 01:25:09 -070039 hfsplus_get_block,
Christoph Hellwig6af502d2010-10-01 05:43:31 +020040 &HFSPLUS_I(mapping->host)->phys_size);
Christoph Hellwig282dc172010-06-04 11:29:55 +020041 if (unlikely(ret)) {
42 loff_t isize = mapping->host->i_size;
43 if (pos + len > isize)
44 vmtruncate(mapping->host, isize);
45 }
46
47 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -070048}
49
50static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
51{
52 return generic_block_bmap(mapping, block, hfsplus_get_block);
53}
54
Al Viro27496a82005-10-21 03:20:48 -040055static int hfsplus_releasepage(struct page *page, gfp_t mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -070056{
57 struct inode *inode = page->mapping->host;
58 struct super_block *sb = inode->i_sb;
59 struct hfs_btree *tree;
60 struct hfs_bnode *node;
61 u32 nidx;
62 int i, res = 1;
63
64 switch (inode->i_ino) {
65 case HFSPLUS_EXT_CNID:
Christoph Hellwigdd73a012010-10-01 05:42:59 +020066 tree = HFSPLUS_SB(sb)->ext_tree;
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 break;
68 case HFSPLUS_CAT_CNID:
Christoph Hellwigdd73a012010-10-01 05:42:59 +020069 tree = HFSPLUS_SB(sb)->cat_tree;
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 break;
71 case HFSPLUS_ATTR_CNID:
Christoph Hellwigdd73a012010-10-01 05:42:59 +020072 tree = HFSPLUS_SB(sb)->attr_tree;
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 break;
74 default:
75 BUG();
76 return 0;
77 }
Eric Sesterhenn70632242008-05-12 14:02:21 -070078 if (!tree)
79 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 if (tree->node_size >= PAGE_CACHE_SIZE) {
Anton Salikhmetov2753cc22010-12-16 18:08:38 +020081 nidx = page->index >>
82 (tree->node_size_shift - PAGE_CACHE_SHIFT);
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 spin_lock(&tree->hash_lock);
84 node = hfs_bnode_findhash(tree, nidx);
85 if (!node)
86 ;
87 else if (atomic_read(&node->refcnt))
88 res = 0;
89 if (res && node) {
90 hfs_bnode_unhash(node);
91 hfs_bnode_free(node);
92 }
93 spin_unlock(&tree->hash_lock);
94 } else {
Anton Salikhmetov2753cc22010-12-16 18:08:38 +020095 nidx = page->index <<
96 (PAGE_CACHE_SHIFT - tree->node_size_shift);
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift);
98 spin_lock(&tree->hash_lock);
99 do {
100 node = hfs_bnode_findhash(tree, nidx++);
101 if (!node)
102 continue;
103 if (atomic_read(&node->refcnt)) {
104 res = 0;
105 break;
106 }
107 hfs_bnode_unhash(node);
108 hfs_bnode_free(node);
109 } while (--i && nidx < tree->node_count);
110 spin_unlock(&tree->hash_lock);
111 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 return res ? try_to_free_buffers(page) : 0;
113}
114
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
116 const struct iovec *iov, loff_t offset, unsigned long nr_segs)
117{
118 struct file *file = iocb->ki_filp;
Josef Sipekf44ea032006-12-08 02:37:04 -0800119 struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
Christoph Hellwigeafdc7d2010-06-04 11:29:53 +0200120 ssize_t ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121
Christoph Hellwigeafdc7d2010-06-04 11:29:53 +0200122 ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
Badari Pulavarty1d8fa7a2006-03-26 01:38:02 -0800123 offset, nr_segs, hfsplus_get_block, NULL);
Christoph Hellwigeafdc7d2010-06-04 11:29:53 +0200124
125 /*
126 * In case of error extending write may have instantiated a few
127 * blocks outside i_size. Trim these off again.
128 */
129 if (unlikely((rw & WRITE) && ret < 0)) {
130 loff_t isize = i_size_read(inode);
131 loff_t end = offset + iov_length(iov, nr_segs);
132
133 if (end > isize)
134 vmtruncate(inode, isize);
135 }
136
137 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138}
139
140static int hfsplus_writepages(struct address_space *mapping,
141 struct writeback_control *wbc)
142{
143 return mpage_writepages(mapping, wbc, hfsplus_get_block);
144}
145
Christoph Hellwigf5e54d62006-06-28 04:26:44 -0700146const struct address_space_operations hfsplus_btree_aops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 .readpage = hfsplus_readpage,
148 .writepage = hfsplus_writepage,
149 .sync_page = block_sync_page,
Nick Piggin7c0efc62007-10-16 01:25:09 -0700150 .write_begin = hfsplus_write_begin,
151 .write_end = generic_write_end,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 .bmap = hfsplus_bmap,
153 .releasepage = hfsplus_releasepage,
154};
155
Christoph Hellwigf5e54d62006-06-28 04:26:44 -0700156const struct address_space_operations hfsplus_aops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157 .readpage = hfsplus_readpage,
158 .writepage = hfsplus_writepage,
159 .sync_page = block_sync_page,
Nick Piggin7c0efc62007-10-16 01:25:09 -0700160 .write_begin = hfsplus_write_begin,
161 .write_end = generic_write_end,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 .bmap = hfsplus_bmap,
163 .direct_IO = hfsplus_direct_IO,
164 .writepages = hfsplus_writepages,
165};
166
Al Viroe16404e2009-02-20 05:55:13 +0000167const struct dentry_operations hfsplus_dentry_operations = {
Duane Griffind45bce82007-07-15 23:41:23 -0700168 .d_hash = hfsplus_hash_dentry,
169 .d_compare = hfsplus_compare_dentry,
170};
171
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200172static struct dentry *hfsplus_file_lookup(struct inode *dir,
173 struct dentry *dentry, struct nameidata *nd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174{
175 struct hfs_find_data fd;
176 struct super_block *sb = dir->i_sb;
177 struct inode *inode = NULL;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200178 struct hfsplus_inode_info *hip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 int err;
180
181 if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
182 goto out;
183
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200184 inode = HFSPLUS_I(dir)->rsrc_inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185 if (inode)
186 goto out;
187
188 inode = new_inode(sb);
189 if (!inode)
190 return ERR_PTR(-ENOMEM);
191
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200192 hip = HFSPLUS_I(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 inode->i_ino = dir->i_ino;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200194 INIT_LIST_HEAD(&hip->open_dir_list);
195 mutex_init(&hip->extents_lock);
Christoph Hellwigb33b7922010-11-23 14:38:13 +0100196 hip->extent_state = 0;
197 hip->flags = 0;
198 set_bit(HFSPLUS_I_RSRC, &hip->flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200200 hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 err = hfsplus_find_cat(sb, dir->i_ino, &fd);
202 if (!err)
203 err = hfsplus_cat_read_inode(inode, &fd);
204 hfs_find_exit(&fd);
205 if (err) {
206 iput(inode);
207 return ERR_PTR(err);
208 }
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200209 hip->rsrc_inode = dir;
210 HFSPLUS_I(dir)->rsrc_inode = inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 igrab(dir);
Christoph Hellwig58a818f2010-10-01 05:44:02 +0200212
213 /*
214 * __mark_inode_dirty expects inodes to be hashed. Since we don't
215 * want resource fork inodes in the regular inode space, we make them
216 * appear hashed, but do not put on any lists. hlist_del()
217 * will work fine and require no locking.
218 */
Al Viro756acc22010-10-23 15:23:40 -0400219 hlist_add_fake(&inode->i_hash);
Christoph Hellwig58a818f2010-10-01 05:44:02 +0200220
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221 mark_inode_dirty(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222out:
223 d_add(dentry, inode);
224 return NULL;
225}
226
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200227static void hfsplus_get_perms(struct inode *inode,
228 struct hfsplus_perm *perms, int dir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229{
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200230 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 u16 mode;
232
233 mode = be16_to_cpu(perms->mode);
234
235 inode->i_uid = be32_to_cpu(perms->owner);
236 if (!inode->i_uid && !mode)
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200237 inode->i_uid = sbi->uid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238
239 inode->i_gid = be32_to_cpu(perms->group);
240 if (!inode->i_gid && !mode)
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200241 inode->i_gid = sbi->gid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242
243 if (dir) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200244 mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 mode |= S_IFDIR;
246 } else if (!mode)
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200247 mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248 inode->i_mode = mode;
249
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200250 HFSPLUS_I(inode)->userflags = perms->userflags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
252 inode->i_flags |= S_IMMUTABLE;
253 else
254 inode->i_flags &= ~S_IMMUTABLE;
255 if (perms->rootflags & HFSPLUS_FLG_APPEND)
256 inode->i_flags |= S_APPEND;
257 else
258 inode->i_flags &= ~S_APPEND;
259}
260
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261static int hfsplus_file_open(struct inode *inode, struct file *file)
262{
263 if (HFSPLUS_IS_RSRC(inode))
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200264 inode = HFSPLUS_I(inode)->rsrc_inode;
Alan Cox6e715292008-10-18 20:28:01 -0700265 if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
266 return -EOVERFLOW;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200267 atomic_inc(&HFSPLUS_I(inode)->opencnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 return 0;
269}
270
271static int hfsplus_file_release(struct inode *inode, struct file *file)
272{
273 struct super_block *sb = inode->i_sb;
274
275 if (HFSPLUS_IS_RSRC(inode))
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200276 inode = HFSPLUS_I(inode)->rsrc_inode;
277 if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800278 mutex_lock(&inode->i_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279 hfsplus_file_truncate(inode);
280 if (inode->i_flags & S_DEAD) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200281 hfsplus_delete_cat(inode->i_ino,
282 HFSPLUS_SB(sb)->hidden_dir, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 hfsplus_delete_inode(inode);
284 }
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800285 mutex_unlock(&inode->i_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 }
287 return 0;
288}
289
Christoph Hellwigd39aae92010-06-04 11:29:59 +0200290static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
291{
292 struct inode *inode = dentry->d_inode;
293 int error;
294
295 error = inode_change_ok(inode, attr);
296 if (error)
297 return error;
Christoph Hellwig10257742010-06-04 11:30:02 +0200298
299 if ((attr->ia_valid & ATTR_SIZE) &&
300 attr->ia_size != i_size_read(inode)) {
301 error = vmtruncate(inode, attr->ia_size);
302 if (error)
303 return error;
304 }
305
306 setattr_copy(inode, attr);
307 mark_inode_dirty(inode);
308 return 0;
Christoph Hellwigd39aae92010-06-04 11:29:59 +0200309}
310
Christoph Hellwigeb29d662010-11-23 14:38:10 +0100311int hfsplus_file_fsync(struct file *file, int datasync)
Al Virob5fc5102010-07-04 12:24:09 +0400312{
Christoph Hellwig28146972010-11-23 14:38:06 +0100313 struct inode *inode = file->f_mapping->host;
Christoph Hellwige3494702010-11-23 14:38:15 +0100314 struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
Christoph Hellwig28146972010-11-23 14:38:06 +0100315 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
Christoph Hellwige3494702010-11-23 14:38:15 +0100316 int error = 0, error2;
Al Virob5fc5102010-07-04 12:24:09 +0400317
Christoph Hellwig28146972010-11-23 14:38:06 +0100318 /*
319 * Sync inode metadata into the catalog and extent trees.
320 */
321 sync_inode_metadata(inode, 1);
Al Virob5fc5102010-07-04 12:24:09 +0400322
Christoph Hellwig28146972010-11-23 14:38:06 +0100323 /*
324 * And explicitly write out the btrees.
325 */
Christoph Hellwige3494702010-11-23 14:38:15 +0100326 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)) {
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200330 error2 =
331 filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
Christoph Hellwige3494702010-11-23 14:38:15 +0100332 if (!error)
333 error = error2;
334 }
335
336 if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) {
337 error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
338 if (!error)
339 error = error2;
340 }
341
Christoph Hellwig34a2d312010-11-23 14:38:21 +0100342 if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
343 blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
344
Christoph Hellwig28146972010-11-23 14:38:06 +0100345 return error;
Al Virob5fc5102010-07-04 12:24:09 +0400346}
347
Arjan van de Ven92e1d5b2007-02-12 00:55:39 -0800348static const struct inode_operations hfsplus_file_inode_operations = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 .lookup = hfsplus_file_lookup,
350 .truncate = hfsplus_file_truncate,
Christoph Hellwigd39aae92010-06-04 11:29:59 +0200351 .setattr = hfsplus_setattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352 .setxattr = hfsplus_setxattr,
353 .getxattr = hfsplus_getxattr,
354 .listxattr = hfsplus_listxattr,
355};
356
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -0800357static const struct file_operations hfsplus_file_operations = {
Anton Salikhmetov20b76432010-12-16 18:08:40 +0200358 .llseek = generic_file_llseek,
Badari Pulavarty543ade12006-09-30 23:28:48 -0700359 .read = do_sync_read,
360 .aio_read = generic_file_aio_read,
361 .write = do_sync_write,
362 .aio_write = generic_file_aio_write,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 .mmap = generic_file_mmap,
Jens Axboe5ffc4ef2007-06-01 11:49:19 +0200364 .splice_read = generic_file_splice_read,
Al Virob5fc5102010-07-04 12:24:09 +0400365 .fsync = hfsplus_file_fsync,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366 .open = hfsplus_file_open,
367 .release = hfsplus_file_release,
Arnd Bergmann7cc4bcc2010-04-27 16:24:20 +0200368 .unlocked_ioctl = hfsplus_ioctl,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369};
370
371struct inode *hfsplus_new_inode(struct super_block *sb, int mode)
372{
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200373 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 struct inode *inode = new_inode(sb);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200375 struct hfsplus_inode_info *hip;
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200376
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 if (!inode)
378 return NULL;
379
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200380 inode->i_ino = sbi->next_cnid++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 inode->i_mode = mode;
David Howells4ac84892008-11-14 10:38:54 +1100382 inode->i_uid = current_fsuid();
383 inode->i_gid = current_fsgid();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 inode->i_nlink = 1;
385 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200386
387 hip = HFSPLUS_I(inode);
388 INIT_LIST_HEAD(&hip->open_dir_list);
389 mutex_init(&hip->extents_lock);
390 atomic_set(&hip->opencnt, 0);
Christoph Hellwigb33b7922010-11-23 14:38:13 +0100391 hip->extent_state = 0;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200392 hip->flags = 0;
393 memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
394 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
395 hip->alloc_blocks = 0;
396 hip->first_blocks = 0;
397 hip->cached_start = 0;
398 hip->cached_blocks = 0;
399 hip->phys_size = 0;
400 hip->fs_blocks = 0;
401 hip->rsrc_inode = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 if (S_ISDIR(inode->i_mode)) {
403 inode->i_size = 2;
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200404 sbi->folder_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 inode->i_op = &hfsplus_dir_inode_operations;
406 inode->i_fop = &hfsplus_dir_operations;
407 } else if (S_ISREG(inode->i_mode)) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200408 sbi->file_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 inode->i_op = &hfsplus_file_inode_operations;
410 inode->i_fop = &hfsplus_file_operations;
411 inode->i_mapping->a_ops = &hfsplus_aops;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200412 hip->clump_blocks = sbi->data_clump_blocks;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 } else if (S_ISLNK(inode->i_mode)) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200414 sbi->file_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415 inode->i_op = &page_symlink_inode_operations;
416 inode->i_mapping->a_ops = &hfsplus_aops;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200417 hip->clump_blocks = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 } else
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200419 sbi->file_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 insert_inode_hash(inode);
421 mark_inode_dirty(inode);
422 sb->s_dirt = 1;
423
424 return inode;
425}
426
427void hfsplus_delete_inode(struct inode *inode)
428{
429 struct super_block *sb = inode->i_sb;
430
431 if (S_ISDIR(inode->i_mode)) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200432 HFSPLUS_SB(sb)->folder_count--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433 sb->s_dirt = 1;
434 return;
435 }
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200436 HFSPLUS_SB(sb)->file_count--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 if (S_ISREG(inode->i_mode)) {
438 if (!inode->i_nlink) {
439 inode->i_size = 0;
440 hfsplus_file_truncate(inode);
441 }
442 } else if (S_ISLNK(inode->i_mode)) {
443 inode->i_size = 0;
444 hfsplus_file_truncate(inode);
445 }
446 sb->s_dirt = 1;
447}
448
449void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
450{
451 struct super_block *sb = inode->i_sb;
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200452 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200453 struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454 u32 count;
455 int i;
456
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200457 memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 for (count = 0, i = 0; i < 8; i++)
459 count += be32_to_cpu(fork->extents[i].block_count);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200460 hip->first_blocks = count;
461 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
462 hip->cached_start = 0;
463 hip->cached_blocks = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200465 hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
466 hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
467 hip->fs_blocks =
468 (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
469 inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
470 hip->clump_blocks =
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200471 be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200472 if (!hip->clump_blocks) {
473 hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200474 sbi->rsrc_clump_blocks :
475 sbi->data_clump_blocks;
476 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477}
478
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200479void hfsplus_inode_write_fork(struct inode *inode,
480 struct hfsplus_fork_raw *fork)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481{
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200482 memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 sizeof(hfsplus_extent_rec));
484 fork->total_size = cpu_to_be64(inode->i_size);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200485 fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486}
487
488int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
489{
490 hfsplus_cat_entry entry;
491 int res = 0;
492 u16 type;
493
494 type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
495
Christoph Hellwigf6089ff2010-10-14 09:54:28 -0400496 HFSPLUS_I(inode)->linkid = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 if (type == HFSPLUS_FOLDER) {
498 struct hfsplus_cat_folder *folder = &entry.folder;
499
500 if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
501 /* panic? */;
502 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
503 sizeof(struct hfsplus_cat_folder));
504 hfsplus_get_perms(inode, &folder->permissions, 1);
505 inode->i_nlink = 1;
506 inode->i_size = 2 + be32_to_cpu(folder->valence);
507 inode->i_atime = hfsp_mt2ut(folder->access_date);
508 inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
Roman Zippel9a4cad92006-01-18 17:43:09 -0800509 inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200510 HFSPLUS_I(inode)->create_date = folder->create_date;
511 HFSPLUS_I(inode)->fs_blocks = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 inode->i_op = &hfsplus_dir_inode_operations;
513 inode->i_fop = &hfsplus_dir_operations;
514 } else if (type == HFSPLUS_FILE) {
515 struct hfsplus_cat_file *file = &entry.file;
516
517 if (fd->entrylength < sizeof(struct hfsplus_cat_file))
518 /* panic? */;
519 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
520 sizeof(struct hfsplus_cat_file));
521
Christoph Hellwigb33b7922010-11-23 14:38:13 +0100522 hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ?
523 &file->rsrc_fork : &file->data_fork);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524 hfsplus_get_perms(inode, &file->permissions, 0);
525 inode->i_nlink = 1;
526 if (S_ISREG(inode->i_mode)) {
527 if (file->permissions.dev)
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200528 inode->i_nlink =
529 be32_to_cpu(file->permissions.dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 inode->i_op = &hfsplus_file_inode_operations;
531 inode->i_fop = &hfsplus_file_operations;
532 inode->i_mapping->a_ops = &hfsplus_aops;
533 } else if (S_ISLNK(inode->i_mode)) {
534 inode->i_op = &page_symlink_inode_operations;
535 inode->i_mapping->a_ops = &hfsplus_aops;
536 } else {
537 init_special_inode(inode, inode->i_mode,
538 be32_to_cpu(file->permissions.dev));
539 }
540 inode->i_atime = hfsp_mt2ut(file->access_date);
541 inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
Roman Zippel9a4cad92006-01-18 17:43:09 -0800542 inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200543 HFSPLUS_I(inode)->create_date = file->create_date;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544 } else {
Roman Zippel634725a2006-01-18 17:43:05 -0800545 printk(KERN_ERR "hfs: bad catalog entry used to create inode\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 res = -EIO;
547 }
548 return res;
549}
550
551int hfsplus_cat_write_inode(struct inode *inode)
552{
553 struct inode *main_inode = inode;
554 struct hfs_find_data fd;
555 hfsplus_cat_entry entry;
556
557 if (HFSPLUS_IS_RSRC(inode))
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200558 main_inode = HFSPLUS_I(inode)->rsrc_inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559
560 if (!main_inode->i_nlink)
561 return 0;
562
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200563 if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 /* panic? */
565 return -EIO;
566
567 if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
568 /* panic? */
569 goto out;
570
571 if (S_ISDIR(main_inode->i_mode)) {
572 struct hfsplus_cat_folder *folder = &entry.folder;
573
574 if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
575 /* panic? */;
576 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
577 sizeof(struct hfsplus_cat_folder));
578 /* simple node checks? */
Christoph Hellwig90e61692010-10-14 09:54:39 -0400579 hfsplus_cat_set_perms(inode, &folder->permissions);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580 folder->access_date = hfsp_ut2mt(inode->i_atime);
581 folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
582 folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
583 folder->valence = cpu_to_be32(inode->i_size - 2);
584 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
585 sizeof(struct hfsplus_cat_folder));
586 } else if (HFSPLUS_IS_RSRC(inode)) {
587 struct hfsplus_cat_file *file = &entry.file;
588 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
589 sizeof(struct hfsplus_cat_file));
590 hfsplus_inode_write_fork(inode, &file->rsrc_fork);
591 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
592 sizeof(struct hfsplus_cat_file));
593 } else {
594 struct hfsplus_cat_file *file = &entry.file;
595
596 if (fd.entrylength < sizeof(struct hfsplus_cat_file))
597 /* panic? */;
598 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
599 sizeof(struct hfsplus_cat_file));
600 hfsplus_inode_write_fork(inode, &file->data_fork);
Christoph Hellwig90e61692010-10-14 09:54:39 -0400601 hfsplus_cat_set_perms(inode, &file->permissions);
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200602 if (HFSPLUS_FLG_IMMUTABLE &
603 (file->permissions.rootflags |
604 file->permissions.userflags))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
606 else
607 file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
608 file->access_date = hfsp_ut2mt(inode->i_atime);
609 file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
610 file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
611 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
612 sizeof(struct hfsplus_cat_file));
613 }
Christoph Hellwige3494702010-11-23 14:38:15 +0100614
615 set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616out:
617 hfs_find_exit(&fd);
618 return 0;
619}