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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>
Kent Overstreeta27bb332013-05-07 16:19:08 -070017#include <linux/aio.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018
19#include "hfsplus_fs.h"
20#include "hfsplus_raw.h"
Vyacheslav Dubeyko324ef392013-02-27 17:03:04 -080021#include "xattr.h"
Vyacheslav Dubeykob4c11072013-09-11 14:24:30 -070022#include "acl.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070023
24static int hfsplus_readpage(struct file *file, struct page *page)
25{
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 return block_read_full_page(page, hfsplus_get_block);
27}
28
29static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
30{
Linus Torvalds1da177e2005-04-16 15:20:36 -070031 return block_write_full_page(page, hfsplus_get_block, wbc);
32}
33
Marco Stornellid5068482012-12-15 11:55:07 +010034static void hfsplus_write_failed(struct address_space *mapping, loff_t to)
35{
36 struct inode *inode = mapping->host;
37
38 if (to > inode->i_size) {
Kirill A. Shutemov7caef262013-09-12 15:13:56 -070039 truncate_pagecache(inode, inode->i_size);
Marco Stornellid5068482012-12-15 11:55:07 +010040 hfsplus_file_truncate(inode);
41 }
42}
43
Nick Piggin7c0efc62007-10-16 01:25:09 -070044static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
45 loff_t pos, unsigned len, unsigned flags,
46 struct page **pagep, void **fsdata)
Linus Torvalds1da177e2005-04-16 15:20:36 -070047{
Christoph Hellwig282dc172010-06-04 11:29:55 +020048 int ret;
49
Nick Piggin7c0efc62007-10-16 01:25:09 -070050 *pagep = NULL;
Christoph Hellwig282dc172010-06-04 11:29:55 +020051 ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
Nick Piggin7c0efc62007-10-16 01:25:09 -070052 hfsplus_get_block,
Christoph Hellwig6af502d2010-10-01 05:43:31 +020053 &HFSPLUS_I(mapping->host)->phys_size);
Marco Stornellid5068482012-12-15 11:55:07 +010054 if (unlikely(ret))
55 hfsplus_write_failed(mapping, pos + len);
Christoph Hellwig282dc172010-06-04 11:29:55 +020056
57 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -070058}
59
60static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
61{
62 return generic_block_bmap(mapping, block, hfsplus_get_block);
63}
64
Al Viro27496a82005-10-21 03:20:48 -040065static int hfsplus_releasepage(struct page *page, gfp_t mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -070066{
67 struct inode *inode = page->mapping->host;
68 struct super_block *sb = inode->i_sb;
69 struct hfs_btree *tree;
70 struct hfs_bnode *node;
71 u32 nidx;
72 int i, res = 1;
73
74 switch (inode->i_ino) {
75 case HFSPLUS_EXT_CNID:
Christoph Hellwigdd73a012010-10-01 05:42:59 +020076 tree = HFSPLUS_SB(sb)->ext_tree;
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 break;
78 case HFSPLUS_CAT_CNID:
Christoph Hellwigdd73a012010-10-01 05:42:59 +020079 tree = HFSPLUS_SB(sb)->cat_tree;
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 break;
81 case HFSPLUS_ATTR_CNID:
Christoph Hellwigdd73a012010-10-01 05:42:59 +020082 tree = HFSPLUS_SB(sb)->attr_tree;
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 break;
84 default:
85 BUG();
86 return 0;
87 }
Eric Sesterhenn70632242008-05-12 14:02:21 -070088 if (!tree)
89 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 if (tree->node_size >= PAGE_CACHE_SIZE) {
Anton Salikhmetov2753cc22010-12-16 18:08:38 +020091 nidx = page->index >>
92 (tree->node_size_shift - PAGE_CACHE_SHIFT);
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 spin_lock(&tree->hash_lock);
94 node = hfs_bnode_findhash(tree, nidx);
95 if (!node)
96 ;
97 else if (atomic_read(&node->refcnt))
98 res = 0;
99 if (res && node) {
100 hfs_bnode_unhash(node);
101 hfs_bnode_free(node);
102 }
103 spin_unlock(&tree->hash_lock);
104 } else {
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200105 nidx = page->index <<
106 (PAGE_CACHE_SHIFT - tree->node_size_shift);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift);
108 spin_lock(&tree->hash_lock);
109 do {
110 node = hfs_bnode_findhash(tree, nidx++);
111 if (!node)
112 continue;
113 if (atomic_read(&node->refcnt)) {
114 res = 0;
115 break;
116 }
117 hfs_bnode_unhash(node);
118 hfs_bnode_free(node);
119 } while (--i && nidx < tree->node_count);
120 spin_unlock(&tree->hash_lock);
121 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 return res ? try_to_free_buffers(page) : 0;
123}
124
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
Al Virod8d3d942014-03-04 21:27:34 -0500126 struct iov_iter *iter, loff_t offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127{
128 struct file *file = iocb->ki_filp;
Marco Stornellid5068482012-12-15 11:55:07 +0100129 struct address_space *mapping = file->f_mapping;
Al Viro496ad9a2013-01-23 17:07:38 -0500130 struct inode *inode = file_inode(file)->i_mapping->host;
Al Viroa6cbcd42014-03-04 22:38:00 -0500131 size_t count = iov_iter_count(iter);
Christoph Hellwigeafdc7d2010-06-04 11:29:53 +0200132 ssize_t ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133
Al Viro31b14032014-03-05 01:33:16 -0500134 ret = blockdev_direct_IO(rw, iocb, inode, iter, offset,
Christoph Hellwigaacfc19c2011-06-24 14:29:47 -0400135 hfsplus_get_block);
Christoph Hellwigeafdc7d2010-06-04 11:29:53 +0200136
137 /*
138 * In case of error extending write may have instantiated a few
139 * blocks outside i_size. Trim these off again.
140 */
141 if (unlikely((rw & WRITE) && ret < 0)) {
142 loff_t isize = i_size_read(inode);
Al Viroa6cbcd42014-03-04 22:38:00 -0500143 loff_t end = offset + count;
Christoph Hellwigeafdc7d2010-06-04 11:29:53 +0200144
145 if (end > isize)
Marco Stornellid5068482012-12-15 11:55:07 +0100146 hfsplus_write_failed(mapping, end);
Christoph Hellwigeafdc7d2010-06-04 11:29:53 +0200147 }
148
149 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150}
151
152static int hfsplus_writepages(struct address_space *mapping,
153 struct writeback_control *wbc)
154{
155 return mpage_writepages(mapping, wbc, hfsplus_get_block);
156}
157
Christoph Hellwigf5e54d62006-06-28 04:26:44 -0700158const struct address_space_operations hfsplus_btree_aops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159 .readpage = hfsplus_readpage,
160 .writepage = hfsplus_writepage,
Nick Piggin7c0efc62007-10-16 01:25:09 -0700161 .write_begin = hfsplus_write_begin,
162 .write_end = generic_write_end,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 .bmap = hfsplus_bmap,
164 .releasepage = hfsplus_releasepage,
165};
166
Christoph Hellwigf5e54d62006-06-28 04:26:44 -0700167const struct address_space_operations hfsplus_aops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 .readpage = hfsplus_readpage,
169 .writepage = hfsplus_writepage,
Nick Piggin7c0efc62007-10-16 01:25:09 -0700170 .write_begin = hfsplus_write_begin,
171 .write_end = generic_write_end,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 .bmap = hfsplus_bmap,
173 .direct_IO = hfsplus_direct_IO,
174 .writepages = hfsplus_writepages,
175};
176
Al Viroe16404e2009-02-20 05:55:13 +0000177const struct dentry_operations hfsplus_dentry_operations = {
Duane Griffind45bce82007-07-15 23:41:23 -0700178 .d_hash = hfsplus_hash_dentry,
179 .d_compare = hfsplus_compare_dentry,
180};
181
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200182static void hfsplus_get_perms(struct inode *inode,
183 struct hfsplus_perm *perms, int dir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184{
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200185 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 u16 mode;
187
188 mode = be16_to_cpu(perms->mode);
189
Eric W. Biederman16525e32012-02-07 16:27:17 -0800190 i_uid_write(inode, be32_to_cpu(perms->owner));
191 if (!i_uid_read(inode) && !mode)
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200192 inode->i_uid = sbi->uid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193
Eric W. Biederman16525e32012-02-07 16:27:17 -0800194 i_gid_write(inode, be32_to_cpu(perms->group));
195 if (!i_gid_read(inode) && !mode)
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200196 inode->i_gid = sbi->gid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197
198 if (dir) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200199 mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 mode |= S_IFDIR;
201 } else if (!mode)
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200202 mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 inode->i_mode = mode;
204
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200205 HFSPLUS_I(inode)->userflags = perms->userflags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216static int hfsplus_file_open(struct inode *inode, struct file *file)
217{
218 if (HFSPLUS_IS_RSRC(inode))
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200219 inode = HFSPLUS_I(inode)->rsrc_inode;
Alan Cox6e715292008-10-18 20:28:01 -0700220 if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
221 return -EOVERFLOW;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200222 atomic_inc(&HFSPLUS_I(inode)->opencnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 return 0;
224}
225
226static 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))
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200231 inode = HFSPLUS_I(inode)->rsrc_inode;
232 if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800233 mutex_lock(&inode->i_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 hfsplus_file_truncate(inode);
235 if (inode->i_flags & S_DEAD) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200236 hfsplus_delete_cat(inode->i_ino,
237 HFSPLUS_SB(sb)->hidden_dir, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 hfsplus_delete_inode(inode);
239 }
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800240 mutex_unlock(&inode->i_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 }
242 return 0;
243}
244
Christoph Hellwigd39aae92010-06-04 11:29:59 +0200245static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
246{
247 struct inode *inode = dentry->d_inode;
248 int error;
249
250 error = inode_change_ok(inode, attr);
251 if (error)
252 return error;
Christoph Hellwig10257742010-06-04 11:30:02 +0200253
254 if ((attr->ia_valid & ATTR_SIZE) &&
255 attr->ia_size != i_size_read(inode)) {
Christoph Hellwig562c72a2011-06-24 14:29:45 -0400256 inode_dio_wait(inode);
Marco Stornellid5068482012-12-15 11:55:07 +0100257 truncate_setsize(inode, attr->ia_size);
258 hfsplus_file_truncate(inode);
Christoph Hellwig10257742010-06-04 11:30:02 +0200259 }
260
261 setattr_copy(inode, attr);
262 mark_inode_dirty(inode);
Vyacheslav Dubeykob4c11072013-09-11 14:24:30 -0700263
264 if (attr->ia_valid & ATTR_MODE) {
Christoph Hellwigb0a7ab52013-12-20 05:16:46 -0800265 error = posix_acl_chmod(inode, inode->i_mode);
Vyacheslav Dubeykob4c11072013-09-11 14:24:30 -0700266 if (unlikely(error))
267 return error;
268 }
269
Christoph Hellwig10257742010-06-04 11:30:02 +0200270 return 0;
Christoph Hellwigd39aae92010-06-04 11:29:59 +0200271}
272
Josef Bacik02c24a82011-07-16 20:44:56 -0400273int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
274 int datasync)
Al Virob5fc5102010-07-04 12:24:09 +0400275{
Christoph Hellwig28146972010-11-23 14:38:06 +0100276 struct inode *inode = file->f_mapping->host;
Christoph Hellwige3494702010-11-23 14:38:15 +0100277 struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
Christoph Hellwig28146972010-11-23 14:38:06 +0100278 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
Christoph Hellwige3494702010-11-23 14:38:15 +0100279 int error = 0, error2;
Al Virob5fc5102010-07-04 12:24:09 +0400280
Josef Bacik02c24a82011-07-16 20:44:56 -0400281 error = filemap_write_and_wait_range(inode->i_mapping, start, end);
282 if (error)
283 return error;
284 mutex_lock(&inode->i_mutex);
285
Christoph Hellwig28146972010-11-23 14:38:06 +0100286 /*
287 * Sync inode metadata into the catalog and extent trees.
288 */
289 sync_inode_metadata(inode, 1);
Al Virob5fc5102010-07-04 12:24:09 +0400290
Christoph Hellwig28146972010-11-23 14:38:06 +0100291 /*
292 * And explicitly write out the btrees.
293 */
Christoph Hellwige3494702010-11-23 14:38:15 +0100294 if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags))
295 error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
296
297 if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) {
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200298 error2 =
299 filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
Christoph Hellwige3494702010-11-23 14:38:15 +0100300 if (!error)
301 error = error2;
302 }
303
Vyacheslav Dubeyko324ef392013-02-27 17:03:04 -0800304 if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) {
305 if (sbi->attr_tree) {
306 error2 =
307 filemap_write_and_wait(
308 sbi->attr_tree->inode->i_mapping);
309 if (!error)
310 error = error2;
311 } else {
Joe Perchesd6142672013-04-30 15:27:55 -0700312 pr_err("sync non-existent attributes tree\n");
Vyacheslav Dubeyko324ef392013-02-27 17:03:04 -0800313 }
314 }
315
Christoph Hellwige3494702010-11-23 14:38:15 +0100316 if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) {
317 error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
318 if (!error)
319 error = error2;
320 }
321
Christoph Hellwig34a2d312010-11-23 14:38:21 +0100322 if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
323 blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
324
Josef Bacik02c24a82011-07-16 20:44:56 -0400325 mutex_unlock(&inode->i_mutex);
326
Christoph Hellwig28146972010-11-23 14:38:06 +0100327 return error;
Al Virob5fc5102010-07-04 12:24:09 +0400328}
329
Arjan van de Ven92e1d5b2007-02-12 00:55:39 -0800330static const struct inode_operations hfsplus_file_inode_operations = {
Christoph Hellwigd39aae92010-06-04 11:29:59 +0200331 .setattr = hfsplus_setattr,
Vyacheslav Dubeyko324ef392013-02-27 17:03:04 -0800332 .setxattr = generic_setxattr,
333 .getxattr = generic_getxattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 .listxattr = hfsplus_listxattr,
Christoph Hellwigb168fff2014-01-29 23:59:19 -0800335 .removexattr = generic_removexattr,
Vyacheslav Dubeykob4c11072013-09-11 14:24:30 -0700336#ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
337 .get_acl = hfsplus_get_posix_acl,
Christoph Hellwigb0a7ab52013-12-20 05:16:46 -0800338 .set_acl = hfsplus_set_posix_acl,
Vyacheslav Dubeykob4c11072013-09-11 14:24:30 -0700339#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340};
341
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -0800342static const struct file_operations hfsplus_file_operations = {
Anton Salikhmetov20b76432010-12-16 18:08:40 +0200343 .llseek = generic_file_llseek,
Al Viroaad4f8b2014-04-02 14:33:16 -0400344 .read = new_sync_read,
345 .read_iter = generic_file_read_iter,
Al Viro81742022014-04-03 03:17:43 -0400346 .write = new_sync_write,
347 .write_iter = generic_file_write_iter,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 .mmap = generic_file_mmap,
Jens Axboe5ffc4ef2007-06-01 11:49:19 +0200349 .splice_read = generic_file_splice_read,
Al Virob5fc5102010-07-04 12:24:09 +0400350 .fsync = hfsplus_file_fsync,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 .open = hfsplus_file_open,
352 .release = hfsplus_file_release,
Arnd Bergmann7cc4bcc2010-04-27 16:24:20 +0200353 .unlocked_ioctl = hfsplus_ioctl,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354};
355
Al Viroc47da792011-07-26 03:26:51 -0400356struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357{
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200358 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 struct inode *inode = new_inode(sb);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200360 struct hfsplus_inode_info *hip;
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200361
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 if (!inode)
363 return NULL;
364
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200365 inode->i_ino = sbi->next_cnid++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366 inode->i_mode = mode;
David Howells4ac84892008-11-14 10:38:54 +1100367 inode->i_uid = current_fsuid();
368 inode->i_gid = current_fsgid();
Miklos Szeredibfe86842011-10-28 14:13:29 +0200369 set_nlink(inode, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200371
372 hip = HFSPLUS_I(inode);
373 INIT_LIST_HEAD(&hip->open_dir_list);
374 mutex_init(&hip->extents_lock);
375 atomic_set(&hip->opencnt, 0);
Christoph Hellwigb33b7922010-11-23 14:38:13 +0100376 hip->extent_state = 0;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200377 hip->flags = 0;
Matthew Garrettf3922382012-03-13 12:10:34 -0400378 hip->userflags = 0;
Sergei Antonovd7d673a2014-03-10 15:49:51 -0700379 hip->subfolders = 0;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200380 memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
381 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
382 hip->alloc_blocks = 0;
383 hip->first_blocks = 0;
384 hip->cached_start = 0;
385 hip->cached_blocks = 0;
386 hip->phys_size = 0;
387 hip->fs_blocks = 0;
388 hip->rsrc_inode = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 if (S_ISDIR(inode->i_mode)) {
390 inode->i_size = 2;
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200391 sbi->folder_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 inode->i_op = &hfsplus_dir_inode_operations;
393 inode->i_fop = &hfsplus_dir_operations;
394 } else if (S_ISREG(inode->i_mode)) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200395 sbi->file_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 inode->i_op = &hfsplus_file_inode_operations;
397 inode->i_fop = &hfsplus_file_operations;
398 inode->i_mapping->a_ops = &hfsplus_aops;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200399 hip->clump_blocks = sbi->data_clump_blocks;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 } else if (S_ISLNK(inode->i_mode)) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200401 sbi->file_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 inode->i_op = &page_symlink_inode_operations;
403 inode->i_mapping->a_ops = &hfsplus_aops;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200404 hip->clump_blocks = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 } else
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200406 sbi->file_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 insert_inode_hash(inode);
408 mark_inode_dirty(inode);
Artem Bityutskiy9e6c5822012-07-12 17:26:31 +0300409 hfsplus_mark_mdb_dirty(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410
411 return inode;
412}
413
414void hfsplus_delete_inode(struct inode *inode)
415{
416 struct super_block *sb = inode->i_sb;
417
418 if (S_ISDIR(inode->i_mode)) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200419 HFSPLUS_SB(sb)->folder_count--;
Artem Bityutskiy9e6c5822012-07-12 17:26:31 +0300420 hfsplus_mark_mdb_dirty(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 return;
422 }
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200423 HFSPLUS_SB(sb)->file_count--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 if (S_ISREG(inode->i_mode)) {
425 if (!inode->i_nlink) {
426 inode->i_size = 0;
427 hfsplus_file_truncate(inode);
428 }
429 } else if (S_ISLNK(inode->i_mode)) {
430 inode->i_size = 0;
431 hfsplus_file_truncate(inode);
432 }
Artem Bityutskiy9e6c5822012-07-12 17:26:31 +0300433 hfsplus_mark_mdb_dirty(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434}
435
436void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
437{
438 struct super_block *sb = inode->i_sb;
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200439 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200440 struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 u32 count;
442 int i;
443
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200444 memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 for (count = 0, i = 0; i < 8; i++)
446 count += be32_to_cpu(fork->extents[i].block_count);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200447 hip->first_blocks = count;
448 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
449 hip->cached_start = 0;
450 hip->cached_blocks = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200452 hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
453 hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
454 hip->fs_blocks =
455 (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
456 inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
457 hip->clump_blocks =
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200458 be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200459 if (!hip->clump_blocks) {
460 hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200461 sbi->rsrc_clump_blocks :
462 sbi->data_clump_blocks;
463 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464}
465
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200466void hfsplus_inode_write_fork(struct inode *inode,
467 struct hfsplus_fork_raw *fork)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468{
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200469 memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 sizeof(hfsplus_extent_rec));
471 fork->total_size = cpu_to_be64(inode->i_size);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200472 fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473}
474
475int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
476{
477 hfsplus_cat_entry entry;
478 int res = 0;
479 u16 type;
480
481 type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
482
Christoph Hellwigf6089ff2010-10-14 09:54:28 -0400483 HFSPLUS_I(inode)->linkid = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 if (type == HFSPLUS_FOLDER) {
485 struct hfsplus_cat_folder *folder = &entry.folder;
486
487 if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
488 /* panic? */;
489 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
490 sizeof(struct hfsplus_cat_folder));
491 hfsplus_get_perms(inode, &folder->permissions, 1);
Miklos Szeredibfe86842011-10-28 14:13:29 +0200492 set_nlink(inode, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 inode->i_size = 2 + be32_to_cpu(folder->valence);
494 inode->i_atime = hfsp_mt2ut(folder->access_date);
495 inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
Roman Zippel9a4cad92006-01-18 17:43:09 -0800496 inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200497 HFSPLUS_I(inode)->create_date = folder->create_date;
498 HFSPLUS_I(inode)->fs_blocks = 0;
Sergei Antonovd7d673a2014-03-10 15:49:51 -0700499 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
500 HFSPLUS_I(inode)->subfolders =
501 be32_to_cpu(folder->subfolders);
502 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 inode->i_op = &hfsplus_dir_inode_operations;
504 inode->i_fop = &hfsplus_dir_operations;
505 } else if (type == HFSPLUS_FILE) {
506 struct hfsplus_cat_file *file = &entry.file;
507
508 if (fd->entrylength < sizeof(struct hfsplus_cat_file))
509 /* panic? */;
510 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
511 sizeof(struct hfsplus_cat_file));
512
Christoph Hellwigb33b7922010-11-23 14:38:13 +0100513 hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ?
514 &file->rsrc_fork : &file->data_fork);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515 hfsplus_get_perms(inode, &file->permissions, 0);
Miklos Szeredibfe86842011-10-28 14:13:29 +0200516 set_nlink(inode, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517 if (S_ISREG(inode->i_mode)) {
518 if (file->permissions.dev)
Miklos Szeredibfe86842011-10-28 14:13:29 +0200519 set_nlink(inode,
520 be32_to_cpu(file->permissions.dev));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521 inode->i_op = &hfsplus_file_inode_operations;
522 inode->i_fop = &hfsplus_file_operations;
523 inode->i_mapping->a_ops = &hfsplus_aops;
524 } else if (S_ISLNK(inode->i_mode)) {
525 inode->i_op = &page_symlink_inode_operations;
526 inode->i_mapping->a_ops = &hfsplus_aops;
527 } else {
528 init_special_inode(inode, inode->i_mode,
529 be32_to_cpu(file->permissions.dev));
530 }
531 inode->i_atime = hfsp_mt2ut(file->access_date);
532 inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
Roman Zippel9a4cad92006-01-18 17:43:09 -0800533 inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200534 HFSPLUS_I(inode)->create_date = file->create_date;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 } else {
Joe Perchesd6142672013-04-30 15:27:55 -0700536 pr_err("bad catalog entry used to create inode\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 res = -EIO;
538 }
539 return res;
540}
541
542int hfsplus_cat_write_inode(struct inode *inode)
543{
544 struct inode *main_inode = inode;
545 struct hfs_find_data fd;
546 hfsplus_cat_entry entry;
547
548 if (HFSPLUS_IS_RSRC(inode))
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200549 main_inode = HFSPLUS_I(inode)->rsrc_inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550
551 if (!main_inode->i_nlink)
552 return 0;
553
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200554 if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555 /* panic? */
556 return -EIO;
557
558 if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
559 /* panic? */
560 goto out;
561
562 if (S_ISDIR(main_inode->i_mode)) {
563 struct hfsplus_cat_folder *folder = &entry.folder;
564
565 if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
566 /* panic? */;
567 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
568 sizeof(struct hfsplus_cat_folder));
569 /* simple node checks? */
Christoph Hellwig90e61692010-10-14 09:54:39 -0400570 hfsplus_cat_set_perms(inode, &folder->permissions);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 folder->access_date = hfsp_ut2mt(inode->i_atime);
572 folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
573 folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
574 folder->valence = cpu_to_be32(inode->i_size - 2);
Sergei Antonovd7d673a2014-03-10 15:49:51 -0700575 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
576 folder->subfolders =
577 cpu_to_be32(HFSPLUS_I(inode)->subfolders);
578 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
580 sizeof(struct hfsplus_cat_folder));
581 } else if (HFSPLUS_IS_RSRC(inode)) {
582 struct hfsplus_cat_file *file = &entry.file;
583 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
584 sizeof(struct hfsplus_cat_file));
585 hfsplus_inode_write_fork(inode, &file->rsrc_fork);
586 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
587 sizeof(struct hfsplus_cat_file));
588 } else {
589 struct hfsplus_cat_file *file = &entry.file;
590
591 if (fd.entrylength < sizeof(struct hfsplus_cat_file))
592 /* panic? */;
593 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
594 sizeof(struct hfsplus_cat_file));
595 hfsplus_inode_write_fork(inode, &file->data_fork);
Christoph Hellwig90e61692010-10-14 09:54:39 -0400596 hfsplus_cat_set_perms(inode, &file->permissions);
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200597 if (HFSPLUS_FLG_IMMUTABLE &
598 (file->permissions.rootflags |
599 file->permissions.userflags))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600 file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
601 else
602 file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
603 file->access_date = hfsp_ut2mt(inode->i_atime);
604 file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
605 file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
606 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
607 sizeof(struct hfsplus_cat_file));
608 }
Christoph Hellwige3494702010-11-23 14:38:15 +0100609
610 set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611out:
612 hfs_find_exit(&fd);
613 return 0;
614}