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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>
Christoph Hellwige2e40f22015-02-22 08:58:50 -080017#include <linux/uio.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
Omar Sandoval22c61862015-03-16 04:33:53 -0700125static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
126 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
Omar Sandoval17f8c842015-03-16 04:33:50 -0700134 ret = blockdev_direct_IO(iocb, inode, iter, offset, hfsplus_get_block);
Christoph Hellwigeafdc7d2010-06-04 11:29:53 +0200135
136 /*
137 * In case of error extending write may have instantiated a few
138 * blocks outside i_size. Trim these off again.
139 */
Omar Sandoval6f673762015-03-16 04:33:52 -0700140 if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) {
Christoph Hellwigeafdc7d2010-06-04 11:29:53 +0200141 loff_t isize = i_size_read(inode);
Al Viroa6cbcd42014-03-04 22:38:00 -0500142 loff_t end = offset + count;
Christoph Hellwigeafdc7d2010-06-04 11:29:53 +0200143
144 if (end > isize)
Marco Stornellid5068482012-12-15 11:55:07 +0100145 hfsplus_write_failed(mapping, end);
Christoph Hellwigeafdc7d2010-06-04 11:29:53 +0200146 }
147
148 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149}
150
151static int hfsplus_writepages(struct address_space *mapping,
152 struct writeback_control *wbc)
153{
154 return mpage_writepages(mapping, wbc, hfsplus_get_block);
155}
156
Christoph Hellwigf5e54d62006-06-28 04:26:44 -0700157const struct address_space_operations hfsplus_btree_aops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 .readpage = hfsplus_readpage,
159 .writepage = hfsplus_writepage,
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 .releasepage = hfsplus_releasepage,
164};
165
Christoph Hellwigf5e54d62006-06-28 04:26:44 -0700166const struct address_space_operations hfsplus_aops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 .readpage = hfsplus_readpage,
168 .writepage = hfsplus_writepage,
Nick Piggin7c0efc62007-10-16 01:25:09 -0700169 .write_begin = hfsplus_write_begin,
170 .write_end = generic_write_end,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 .bmap = hfsplus_bmap,
172 .direct_IO = hfsplus_direct_IO,
173 .writepages = hfsplus_writepages,
174};
175
Al Viroe16404e2009-02-20 05:55:13 +0000176const struct dentry_operations hfsplus_dentry_operations = {
Duane Griffind45bce82007-07-15 23:41:23 -0700177 .d_hash = hfsplus_hash_dentry,
178 .d_compare = hfsplus_compare_dentry,
179};
180
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200181static void hfsplus_get_perms(struct inode *inode,
182 struct hfsplus_perm *perms, int dir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183{
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200184 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185 u16 mode;
186
187 mode = be16_to_cpu(perms->mode);
188
Eric W. Biederman16525e32012-02-07 16:27:17 -0800189 i_uid_write(inode, be32_to_cpu(perms->owner));
190 if (!i_uid_read(inode) && !mode)
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200191 inode->i_uid = sbi->uid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192
Eric W. Biederman16525e32012-02-07 16:27:17 -0800193 i_gid_write(inode, be32_to_cpu(perms->group));
194 if (!i_gid_read(inode) && !mode)
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200195 inode->i_gid = sbi->gid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
197 if (dir) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200198 mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 mode |= S_IFDIR;
200 } else if (!mode)
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200201 mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 inode->i_mode = mode;
203
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200204 HFSPLUS_I(inode)->userflags = perms->userflags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205 if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
206 inode->i_flags |= S_IMMUTABLE;
207 else
208 inode->i_flags &= ~S_IMMUTABLE;
209 if (perms->rootflags & HFSPLUS_FLG_APPEND)
210 inode->i_flags |= S_APPEND;
211 else
212 inode->i_flags &= ~S_APPEND;
213}
214
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215static int hfsplus_file_open(struct inode *inode, struct file *file)
216{
217 if (HFSPLUS_IS_RSRC(inode))
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200218 inode = HFSPLUS_I(inode)->rsrc_inode;
Alan Cox6e715292008-10-18 20:28:01 -0700219 if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
220 return -EOVERFLOW;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200221 atomic_inc(&HFSPLUS_I(inode)->opencnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 return 0;
223}
224
225static int hfsplus_file_release(struct inode *inode, struct file *file)
226{
227 struct super_block *sb = inode->i_sb;
228
229 if (HFSPLUS_IS_RSRC(inode))
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200230 inode = HFSPLUS_I(inode)->rsrc_inode;
231 if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800232 mutex_lock(&inode->i_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 hfsplus_file_truncate(inode);
234 if (inode->i_flags & S_DEAD) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200235 hfsplus_delete_cat(inode->i_ino,
236 HFSPLUS_SB(sb)->hidden_dir, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 hfsplus_delete_inode(inode);
238 }
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800239 mutex_unlock(&inode->i_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 }
241 return 0;
242}
243
Christoph Hellwigd39aae92010-06-04 11:29:59 +0200244static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
245{
246 struct inode *inode = dentry->d_inode;
247 int error;
248
249 error = inode_change_ok(inode, attr);
250 if (error)
251 return error;
Christoph Hellwig10257742010-06-04 11:30:02 +0200252
253 if ((attr->ia_valid & ATTR_SIZE) &&
254 attr->ia_size != i_size_read(inode)) {
Christoph Hellwig562c72a2011-06-24 14:29:45 -0400255 inode_dio_wait(inode);
Marco Stornellid5068482012-12-15 11:55:07 +0100256 truncate_setsize(inode, attr->ia_size);
257 hfsplus_file_truncate(inode);
Christoph Hellwig10257742010-06-04 11:30:02 +0200258 }
259
260 setattr_copy(inode, attr);
261 mark_inode_dirty(inode);
Vyacheslav Dubeykob4c11072013-09-11 14:24:30 -0700262
263 if (attr->ia_valid & ATTR_MODE) {
Christoph Hellwigb0a7ab52013-12-20 05:16:46 -0800264 error = posix_acl_chmod(inode, inode->i_mode);
Vyacheslav Dubeykob4c11072013-09-11 14:24:30 -0700265 if (unlikely(error))
266 return error;
267 }
268
Christoph Hellwig10257742010-06-04 11:30:02 +0200269 return 0;
Christoph Hellwigd39aae92010-06-04 11:29:59 +0200270}
271
Josef Bacik02c24a82011-07-16 20:44:56 -0400272int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
273 int datasync)
Al Virob5fc5102010-07-04 12:24:09 +0400274{
Christoph Hellwig28146972010-11-23 14:38:06 +0100275 struct inode *inode = file->f_mapping->host;
Christoph Hellwige3494702010-11-23 14:38:15 +0100276 struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
Christoph Hellwig28146972010-11-23 14:38:06 +0100277 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
Christoph Hellwige3494702010-11-23 14:38:15 +0100278 int error = 0, error2;
Al Virob5fc5102010-07-04 12:24:09 +0400279
Josef Bacik02c24a82011-07-16 20:44:56 -0400280 error = filemap_write_and_wait_range(inode->i_mapping, start, end);
281 if (error)
282 return error;
283 mutex_lock(&inode->i_mutex);
284
Christoph Hellwig28146972010-11-23 14:38:06 +0100285 /*
286 * Sync inode metadata into the catalog and extent trees.
287 */
288 sync_inode_metadata(inode, 1);
Al Virob5fc5102010-07-04 12:24:09 +0400289
Christoph Hellwig28146972010-11-23 14:38:06 +0100290 /*
291 * And explicitly write out the btrees.
292 */
Christoph Hellwige3494702010-11-23 14:38:15 +0100293 if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags))
294 error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
295
296 if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) {
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200297 error2 =
298 filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
Christoph Hellwige3494702010-11-23 14:38:15 +0100299 if (!error)
300 error = error2;
301 }
302
Vyacheslav Dubeyko324ef392013-02-27 17:03:04 -0800303 if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) {
304 if (sbi->attr_tree) {
305 error2 =
306 filemap_write_and_wait(
307 sbi->attr_tree->inode->i_mapping);
308 if (!error)
309 error = error2;
310 } else {
Joe Perchesd6142672013-04-30 15:27:55 -0700311 pr_err("sync non-existent attributes tree\n");
Vyacheslav Dubeyko324ef392013-02-27 17:03:04 -0800312 }
313 }
314
Christoph Hellwige3494702010-11-23 14:38:15 +0100315 if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) {
316 error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
317 if (!error)
318 error = error2;
319 }
320
Christoph Hellwig34a2d312010-11-23 14:38:21 +0100321 if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
322 blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
323
Josef Bacik02c24a82011-07-16 20:44:56 -0400324 mutex_unlock(&inode->i_mutex);
325
Christoph Hellwig28146972010-11-23 14:38:06 +0100326 return error;
Al Virob5fc5102010-07-04 12:24:09 +0400327}
328
Arjan van de Ven92e1d5b2007-02-12 00:55:39 -0800329static const struct inode_operations hfsplus_file_inode_operations = {
Christoph Hellwigd39aae92010-06-04 11:29:59 +0200330 .setattr = hfsplus_setattr,
Vyacheslav Dubeyko324ef392013-02-27 17:03:04 -0800331 .setxattr = generic_setxattr,
332 .getxattr = generic_getxattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 .listxattr = hfsplus_listxattr,
Christoph Hellwigb168fff2014-01-29 23:59:19 -0800334 .removexattr = generic_removexattr,
Vyacheslav Dubeykob4c11072013-09-11 14:24:30 -0700335#ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
336 .get_acl = hfsplus_get_posix_acl,
Christoph Hellwigb0a7ab52013-12-20 05:16:46 -0800337 .set_acl = hfsplus_set_posix_acl,
Vyacheslav Dubeykob4c11072013-09-11 14:24:30 -0700338#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339};
340
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -0800341static const struct file_operations hfsplus_file_operations = {
Anton Salikhmetov20b76432010-12-16 18:08:40 +0200342 .llseek = generic_file_llseek,
Al Viroaad4f8b2014-04-02 14:33:16 -0400343 .read_iter = generic_file_read_iter,
Al Viro81742022014-04-03 03:17:43 -0400344 .write_iter = generic_file_write_iter,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 .mmap = generic_file_mmap,
Jens Axboe5ffc4ef2007-06-01 11:49:19 +0200346 .splice_read = generic_file_splice_read,
Al Virob5fc5102010-07-04 12:24:09 +0400347 .fsync = hfsplus_file_fsync,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 .open = hfsplus_file_open,
349 .release = hfsplus_file_release,
Arnd Bergmann7cc4bcc2010-04-27 16:24:20 +0200350 .unlocked_ioctl = hfsplus_ioctl,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351};
352
Al Viroc47da792011-07-26 03:26:51 -0400353struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354{
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200355 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 struct inode *inode = new_inode(sb);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200357 struct hfsplus_inode_info *hip;
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200358
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 if (!inode)
360 return NULL;
361
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200362 inode->i_ino = sbi->next_cnid++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 inode->i_mode = mode;
David Howells4ac84892008-11-14 10:38:54 +1100364 inode->i_uid = current_fsuid();
365 inode->i_gid = current_fsgid();
Miklos Szeredibfe86842011-10-28 14:13:29 +0200366 set_nlink(inode, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200368
369 hip = HFSPLUS_I(inode);
370 INIT_LIST_HEAD(&hip->open_dir_list);
371 mutex_init(&hip->extents_lock);
372 atomic_set(&hip->opencnt, 0);
Christoph Hellwigb33b7922010-11-23 14:38:13 +0100373 hip->extent_state = 0;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200374 hip->flags = 0;
Matthew Garrettf3922382012-03-13 12:10:34 -0400375 hip->userflags = 0;
Sergei Antonovd7d673a2014-03-10 15:49:51 -0700376 hip->subfolders = 0;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200377 memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
378 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
379 hip->alloc_blocks = 0;
380 hip->first_blocks = 0;
381 hip->cached_start = 0;
382 hip->cached_blocks = 0;
383 hip->phys_size = 0;
384 hip->fs_blocks = 0;
385 hip->rsrc_inode = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 if (S_ISDIR(inode->i_mode)) {
387 inode->i_size = 2;
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200388 sbi->folder_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 inode->i_op = &hfsplus_dir_inode_operations;
390 inode->i_fop = &hfsplus_dir_operations;
391 } else if (S_ISREG(inode->i_mode)) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200392 sbi->file_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 inode->i_op = &hfsplus_file_inode_operations;
394 inode->i_fop = &hfsplus_file_operations;
395 inode->i_mapping->a_ops = &hfsplus_aops;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200396 hip->clump_blocks = sbi->data_clump_blocks;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 } else if (S_ISLNK(inode->i_mode)) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200398 sbi->file_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 inode->i_op = &page_symlink_inode_operations;
400 inode->i_mapping->a_ops = &hfsplus_aops;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200401 hip->clump_blocks = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 } else
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200403 sbi->file_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 insert_inode_hash(inode);
405 mark_inode_dirty(inode);
Artem Bityutskiy9e6c5822012-07-12 17:26:31 +0300406 hfsplus_mark_mdb_dirty(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407
408 return inode;
409}
410
411void hfsplus_delete_inode(struct inode *inode)
412{
413 struct super_block *sb = inode->i_sb;
414
415 if (S_ISDIR(inode->i_mode)) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200416 HFSPLUS_SB(sb)->folder_count--;
Artem Bityutskiy9e6c5822012-07-12 17:26:31 +0300417 hfsplus_mark_mdb_dirty(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 return;
419 }
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200420 HFSPLUS_SB(sb)->file_count--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 if (S_ISREG(inode->i_mode)) {
422 if (!inode->i_nlink) {
423 inode->i_size = 0;
424 hfsplus_file_truncate(inode);
425 }
426 } else if (S_ISLNK(inode->i_mode)) {
427 inode->i_size = 0;
428 hfsplus_file_truncate(inode);
429 }
Artem Bityutskiy9e6c5822012-07-12 17:26:31 +0300430 hfsplus_mark_mdb_dirty(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431}
432
433void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
434{
435 struct super_block *sb = inode->i_sb;
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200436 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200437 struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 u32 count;
439 int i;
440
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200441 memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 for (count = 0, i = 0; i < 8; i++)
443 count += be32_to_cpu(fork->extents[i].block_count);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200444 hip->first_blocks = count;
445 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
446 hip->cached_start = 0;
447 hip->cached_blocks = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200449 hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
450 hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
451 hip->fs_blocks =
452 (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
453 inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
454 hip->clump_blocks =
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200455 be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200456 if (!hip->clump_blocks) {
457 hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200458 sbi->rsrc_clump_blocks :
459 sbi->data_clump_blocks;
460 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461}
462
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200463void hfsplus_inode_write_fork(struct inode *inode,
464 struct hfsplus_fork_raw *fork)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465{
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200466 memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467 sizeof(hfsplus_extent_rec));
468 fork->total_size = cpu_to_be64(inode->i_size);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200469 fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470}
471
472int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
473{
474 hfsplus_cat_entry entry;
475 int res = 0;
476 u16 type;
477
478 type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
479
Christoph Hellwigf6089ff2010-10-14 09:54:28 -0400480 HFSPLUS_I(inode)->linkid = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 if (type == HFSPLUS_FOLDER) {
482 struct hfsplus_cat_folder *folder = &entry.folder;
483
484 if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
485 /* panic? */;
486 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
487 sizeof(struct hfsplus_cat_folder));
488 hfsplus_get_perms(inode, &folder->permissions, 1);
Miklos Szeredibfe86842011-10-28 14:13:29 +0200489 set_nlink(inode, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 inode->i_size = 2 + be32_to_cpu(folder->valence);
491 inode->i_atime = hfsp_mt2ut(folder->access_date);
492 inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
Roman Zippel9a4cad92006-01-18 17:43:09 -0800493 inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200494 HFSPLUS_I(inode)->create_date = folder->create_date;
495 HFSPLUS_I(inode)->fs_blocks = 0;
Sergei Antonovd7d673a2014-03-10 15:49:51 -0700496 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
497 HFSPLUS_I(inode)->subfolders =
498 be32_to_cpu(folder->subfolders);
499 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500 inode->i_op = &hfsplus_dir_inode_operations;
501 inode->i_fop = &hfsplus_dir_operations;
502 } else if (type == HFSPLUS_FILE) {
503 struct hfsplus_cat_file *file = &entry.file;
504
505 if (fd->entrylength < sizeof(struct hfsplus_cat_file))
506 /* panic? */;
507 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
508 sizeof(struct hfsplus_cat_file));
509
Christoph Hellwigb33b7922010-11-23 14:38:13 +0100510 hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ?
511 &file->rsrc_fork : &file->data_fork);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 hfsplus_get_perms(inode, &file->permissions, 0);
Miklos Szeredibfe86842011-10-28 14:13:29 +0200513 set_nlink(inode, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514 if (S_ISREG(inode->i_mode)) {
515 if (file->permissions.dev)
Miklos Szeredibfe86842011-10-28 14:13:29 +0200516 set_nlink(inode,
517 be32_to_cpu(file->permissions.dev));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 inode->i_op = &hfsplus_file_inode_operations;
519 inode->i_fop = &hfsplus_file_operations;
520 inode->i_mapping->a_ops = &hfsplus_aops;
521 } else if (S_ISLNK(inode->i_mode)) {
522 inode->i_op = &page_symlink_inode_operations;
523 inode->i_mapping->a_ops = &hfsplus_aops;
524 } else {
525 init_special_inode(inode, inode->i_mode,
526 be32_to_cpu(file->permissions.dev));
527 }
528 inode->i_atime = hfsp_mt2ut(file->access_date);
529 inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
Roman Zippel9a4cad92006-01-18 17:43:09 -0800530 inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200531 HFSPLUS_I(inode)->create_date = file->create_date;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532 } else {
Joe Perchesd6142672013-04-30 15:27:55 -0700533 pr_err("bad catalog entry used to create inode\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 res = -EIO;
535 }
536 return res;
537}
538
539int hfsplus_cat_write_inode(struct inode *inode)
540{
541 struct inode *main_inode = inode;
542 struct hfs_find_data fd;
543 hfsplus_cat_entry entry;
544
545 if (HFSPLUS_IS_RSRC(inode))
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200546 main_inode = HFSPLUS_I(inode)->rsrc_inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547
548 if (!main_inode->i_nlink)
549 return 0;
550
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200551 if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552 /* panic? */
553 return -EIO;
554
555 if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
556 /* panic? */
557 goto out;
558
559 if (S_ISDIR(main_inode->i_mode)) {
560 struct hfsplus_cat_folder *folder = &entry.folder;
561
562 if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
563 /* panic? */;
564 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
565 sizeof(struct hfsplus_cat_folder));
566 /* simple node checks? */
Christoph Hellwig90e61692010-10-14 09:54:39 -0400567 hfsplus_cat_set_perms(inode, &folder->permissions);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 folder->access_date = hfsp_ut2mt(inode->i_atime);
569 folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
570 folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
571 folder->valence = cpu_to_be32(inode->i_size - 2);
Sergei Antonovd7d673a2014-03-10 15:49:51 -0700572 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
573 folder->subfolders =
574 cpu_to_be32(HFSPLUS_I(inode)->subfolders);
575 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
577 sizeof(struct hfsplus_cat_folder));
578 } else if (HFSPLUS_IS_RSRC(inode)) {
579 struct hfsplus_cat_file *file = &entry.file;
580 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
581 sizeof(struct hfsplus_cat_file));
582 hfsplus_inode_write_fork(inode, &file->rsrc_fork);
583 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
584 sizeof(struct hfsplus_cat_file));
585 } else {
586 struct hfsplus_cat_file *file = &entry.file;
587
588 if (fd.entrylength < sizeof(struct hfsplus_cat_file))
589 /* panic? */;
590 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
591 sizeof(struct hfsplus_cat_file));
592 hfsplus_inode_write_fork(inode, &file->data_fork);
Christoph Hellwig90e61692010-10-14 09:54:39 -0400593 hfsplus_cat_set_perms(inode, &file->permissions);
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200594 if (HFSPLUS_FLG_IMMUTABLE &
595 (file->permissions.rootflags |
596 file->permissions.userflags))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597 file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
598 else
599 file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
600 file->access_date = hfsp_ut2mt(inode->i_atime);
601 file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
602 file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
603 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
604 sizeof(struct hfsplus_cat_file));
605 }
Christoph Hellwige3494702010-11-23 14:38:15 +0100606
607 set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608out:
609 hfs_find_exit(&fd);
610 return 0;
611}