Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 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 | |
| 11 | #include <linux/mm.h> |
| 12 | #include <linux/fs.h> |
| 13 | #include <linux/pagemap.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <linux/mpage.h> |
Alexey Dobriyan | e8edc6e | 2007-05-21 01:22:52 +0400 | [diff] [blame] | 15 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | |
| 17 | #include "hfsplus_fs.h" |
| 18 | #include "hfsplus_raw.h" |
| 19 | |
| 20 | static int hfsplus_readpage(struct file *file, struct page *page) |
| 21 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | return block_read_full_page(page, hfsplus_get_block); |
| 23 | } |
| 24 | |
| 25 | static int hfsplus_writepage(struct page *page, struct writeback_control *wbc) |
| 26 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | return block_write_full_page(page, hfsplus_get_block, wbc); |
| 28 | } |
| 29 | |
Nick Piggin | 7c0efc6 | 2007-10-16 01:25:09 -0700 | [diff] [blame] | 30 | static int hfsplus_write_begin(struct file *file, struct address_space *mapping, |
| 31 | loff_t pos, unsigned len, unsigned flags, |
| 32 | struct page **pagep, void **fsdata) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | { |
Nick Piggin | 7c0efc6 | 2007-10-16 01:25:09 -0700 | [diff] [blame] | 34 | *pagep = NULL; |
| 35 | return cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, |
| 36 | hfsplus_get_block, |
| 37 | &HFSPLUS_I(mapping->host).phys_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | } |
| 39 | |
| 40 | static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) |
| 41 | { |
| 42 | return generic_block_bmap(mapping, block, hfsplus_get_block); |
| 43 | } |
| 44 | |
Al Viro | 27496a8 | 2005-10-21 03:20:48 -0400 | [diff] [blame] | 45 | static int hfsplus_releasepage(struct page *page, gfp_t mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | { |
| 47 | struct inode *inode = page->mapping->host; |
| 48 | struct super_block *sb = inode->i_sb; |
| 49 | struct hfs_btree *tree; |
| 50 | struct hfs_bnode *node; |
| 51 | u32 nidx; |
| 52 | int i, res = 1; |
| 53 | |
| 54 | switch (inode->i_ino) { |
| 55 | case HFSPLUS_EXT_CNID: |
| 56 | tree = HFSPLUS_SB(sb).ext_tree; |
| 57 | break; |
| 58 | case HFSPLUS_CAT_CNID: |
| 59 | tree = HFSPLUS_SB(sb).cat_tree; |
| 60 | break; |
| 61 | case HFSPLUS_ATTR_CNID: |
| 62 | tree = HFSPLUS_SB(sb).attr_tree; |
| 63 | break; |
| 64 | default: |
| 65 | BUG(); |
| 66 | return 0; |
| 67 | } |
Eric Sesterhenn | 7063224 | 2008-05-12 14:02:21 -0700 | [diff] [blame] | 68 | if (!tree) |
| 69 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | if (tree->node_size >= PAGE_CACHE_SIZE) { |
| 71 | nidx = page->index >> (tree->node_size_shift - PAGE_CACHE_SHIFT); |
| 72 | spin_lock(&tree->hash_lock); |
| 73 | node = hfs_bnode_findhash(tree, nidx); |
| 74 | if (!node) |
| 75 | ; |
| 76 | else if (atomic_read(&node->refcnt)) |
| 77 | res = 0; |
| 78 | if (res && node) { |
| 79 | hfs_bnode_unhash(node); |
| 80 | hfs_bnode_free(node); |
| 81 | } |
| 82 | spin_unlock(&tree->hash_lock); |
| 83 | } else { |
| 84 | nidx = page->index << (PAGE_CACHE_SHIFT - tree->node_size_shift); |
| 85 | i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift); |
| 86 | spin_lock(&tree->hash_lock); |
| 87 | do { |
| 88 | node = hfs_bnode_findhash(tree, nidx++); |
| 89 | if (!node) |
| 90 | continue; |
| 91 | if (atomic_read(&node->refcnt)) { |
| 92 | res = 0; |
| 93 | break; |
| 94 | } |
| 95 | hfs_bnode_unhash(node); |
| 96 | hfs_bnode_free(node); |
| 97 | } while (--i && nidx < tree->node_count); |
| 98 | spin_unlock(&tree->hash_lock); |
| 99 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | return res ? try_to_free_buffers(page) : 0; |
| 101 | } |
| 102 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb, |
| 104 | const struct iovec *iov, loff_t offset, unsigned long nr_segs) |
| 105 | { |
| 106 | struct file *file = iocb->ki_filp; |
Josef Sipek | f44ea03 | 2006-12-08 02:37:04 -0800 | [diff] [blame] | 107 | struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | |
| 109 | return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, |
Badari Pulavarty | 1d8fa7a | 2006-03-26 01:38:02 -0800 | [diff] [blame] | 110 | offset, nr_segs, hfsplus_get_block, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | static int hfsplus_writepages(struct address_space *mapping, |
| 114 | struct writeback_control *wbc) |
| 115 | { |
| 116 | return mpage_writepages(mapping, wbc, hfsplus_get_block); |
| 117 | } |
| 118 | |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame] | 119 | const struct address_space_operations hfsplus_btree_aops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | .readpage = hfsplus_readpage, |
| 121 | .writepage = hfsplus_writepage, |
| 122 | .sync_page = block_sync_page, |
Nick Piggin | 7c0efc6 | 2007-10-16 01:25:09 -0700 | [diff] [blame] | 123 | .write_begin = hfsplus_write_begin, |
| 124 | .write_end = generic_write_end, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | .bmap = hfsplus_bmap, |
| 126 | .releasepage = hfsplus_releasepage, |
| 127 | }; |
| 128 | |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame] | 129 | const struct address_space_operations hfsplus_aops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | .readpage = hfsplus_readpage, |
| 131 | .writepage = hfsplus_writepage, |
| 132 | .sync_page = block_sync_page, |
Nick Piggin | 7c0efc6 | 2007-10-16 01:25:09 -0700 | [diff] [blame] | 133 | .write_begin = hfsplus_write_begin, |
| 134 | .write_end = generic_write_end, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | .bmap = hfsplus_bmap, |
| 136 | .direct_IO = hfsplus_direct_IO, |
| 137 | .writepages = hfsplus_writepages, |
| 138 | }; |
| 139 | |
Al Viro | e16404e | 2009-02-20 05:55:13 +0000 | [diff] [blame] | 140 | const struct dentry_operations hfsplus_dentry_operations = { |
Duane Griffin | d45bce8 | 2007-07-15 23:41:23 -0700 | [diff] [blame] | 141 | .d_hash = hfsplus_hash_dentry, |
| 142 | .d_compare = hfsplus_compare_dentry, |
| 143 | }; |
| 144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dentry, |
| 146 | struct nameidata *nd) |
| 147 | { |
| 148 | struct hfs_find_data fd; |
| 149 | struct super_block *sb = dir->i_sb; |
| 150 | struct inode *inode = NULL; |
| 151 | int err; |
| 152 | |
| 153 | if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc")) |
| 154 | goto out; |
| 155 | |
| 156 | inode = HFSPLUS_I(dir).rsrc_inode; |
| 157 | if (inode) |
| 158 | goto out; |
| 159 | |
| 160 | inode = new_inode(sb); |
| 161 | if (!inode) |
| 162 | return ERR_PTR(-ENOMEM); |
| 163 | |
| 164 | inode->i_ino = dir->i_ino; |
| 165 | INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list); |
Matthias Kaehlcke | 895c23f | 2008-07-25 01:46:36 -0700 | [diff] [blame] | 166 | mutex_init(&HFSPLUS_I(inode).extents_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | HFSPLUS_I(inode).flags = HFSPLUS_FLG_RSRC; |
| 168 | |
| 169 | hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); |
| 170 | err = hfsplus_find_cat(sb, dir->i_ino, &fd); |
| 171 | if (!err) |
| 172 | err = hfsplus_cat_read_inode(inode, &fd); |
| 173 | hfs_find_exit(&fd); |
| 174 | if (err) { |
| 175 | iput(inode); |
| 176 | return ERR_PTR(err); |
| 177 | } |
| 178 | HFSPLUS_I(inode).rsrc_inode = dir; |
| 179 | HFSPLUS_I(dir).rsrc_inode = inode; |
| 180 | igrab(dir); |
| 181 | hlist_add_head(&inode->i_hash, &HFSPLUS_SB(sb).rsrc_inodes); |
| 182 | mark_inode_dirty(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | out: |
| 184 | d_add(dentry, inode); |
| 185 | return NULL; |
| 186 | } |
| 187 | |
| 188 | static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir) |
| 189 | { |
| 190 | struct super_block *sb = inode->i_sb; |
| 191 | u16 mode; |
| 192 | |
| 193 | mode = be16_to_cpu(perms->mode); |
| 194 | |
| 195 | inode->i_uid = be32_to_cpu(perms->owner); |
| 196 | if (!inode->i_uid && !mode) |
| 197 | inode->i_uid = HFSPLUS_SB(sb).uid; |
| 198 | |
| 199 | inode->i_gid = be32_to_cpu(perms->group); |
| 200 | if (!inode->i_gid && !mode) |
| 201 | inode->i_gid = HFSPLUS_SB(sb).gid; |
| 202 | |
| 203 | if (dir) { |
| 204 | mode = mode ? (mode & S_IALLUGO) : |
| 205 | (S_IRWXUGO & ~(HFSPLUS_SB(sb).umask)); |
| 206 | mode |= S_IFDIR; |
| 207 | } else if (!mode) |
| 208 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & |
| 209 | ~(HFSPLUS_SB(sb).umask)); |
| 210 | inode->i_mode = mode; |
| 211 | |
| 212 | HFSPLUS_I(inode).rootflags = perms->rootflags; |
| 213 | HFSPLUS_I(inode).userflags = perms->userflags; |
| 214 | if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) |
| 215 | inode->i_flags |= S_IMMUTABLE; |
| 216 | else |
| 217 | inode->i_flags &= ~S_IMMUTABLE; |
| 218 | if (perms->rootflags & HFSPLUS_FLG_APPEND) |
| 219 | inode->i_flags |= S_APPEND; |
| 220 | else |
| 221 | inode->i_flags &= ~S_APPEND; |
| 222 | } |
| 223 | |
| 224 | static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms) |
| 225 | { |
| 226 | if (inode->i_flags & S_IMMUTABLE) |
| 227 | perms->rootflags |= HFSPLUS_FLG_IMMUTABLE; |
| 228 | else |
| 229 | perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE; |
| 230 | if (inode->i_flags & S_APPEND) |
| 231 | perms->rootflags |= HFSPLUS_FLG_APPEND; |
| 232 | else |
| 233 | perms->rootflags &= ~HFSPLUS_FLG_APPEND; |
| 234 | perms->userflags = HFSPLUS_I(inode).userflags; |
| 235 | perms->mode = cpu_to_be16(inode->i_mode); |
| 236 | perms->owner = cpu_to_be32(inode->i_uid); |
| 237 | perms->group = cpu_to_be32(inode->i_gid); |
| 238 | perms->dev = cpu_to_be32(HFSPLUS_I(inode).dev); |
| 239 | } |
| 240 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | static int hfsplus_file_open(struct inode *inode, struct file *file) |
| 242 | { |
| 243 | if (HFSPLUS_IS_RSRC(inode)) |
| 244 | inode = HFSPLUS_I(inode).rsrc_inode; |
Alan Cox | 6e71529 | 2008-10-18 20:28:01 -0700 | [diff] [blame] | 245 | if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
| 246 | return -EOVERFLOW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | atomic_inc(&HFSPLUS_I(inode).opencnt); |
| 248 | return 0; |
| 249 | } |
| 250 | |
| 251 | static int hfsplus_file_release(struct inode *inode, struct file *file) |
| 252 | { |
| 253 | struct super_block *sb = inode->i_sb; |
| 254 | |
| 255 | if (HFSPLUS_IS_RSRC(inode)) |
| 256 | inode = HFSPLUS_I(inode).rsrc_inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | if (atomic_dec_and_test(&HFSPLUS_I(inode).opencnt)) { |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 258 | mutex_lock(&inode->i_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | hfsplus_file_truncate(inode); |
| 260 | if (inode->i_flags & S_DEAD) { |
| 261 | hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL); |
| 262 | hfsplus_delete_inode(inode); |
| 263 | } |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 264 | mutex_unlock(&inode->i_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | } |
| 266 | return 0; |
| 267 | } |
| 268 | |
Arjan van de Ven | 92e1d5b | 2007-02-12 00:55:39 -0800 | [diff] [blame] | 269 | static const struct inode_operations hfsplus_file_inode_operations = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | .lookup = hfsplus_file_lookup, |
| 271 | .truncate = hfsplus_file_truncate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | .setxattr = hfsplus_setxattr, |
| 273 | .getxattr = hfsplus_getxattr, |
| 274 | .listxattr = hfsplus_listxattr, |
| 275 | }; |
| 276 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 277 | static const struct file_operations hfsplus_file_operations = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | .llseek = generic_file_llseek, |
Badari Pulavarty | 543ade1 | 2006-09-30 23:28:48 -0700 | [diff] [blame] | 279 | .read = do_sync_read, |
| 280 | .aio_read = generic_file_aio_read, |
| 281 | .write = do_sync_write, |
| 282 | .aio_write = generic_file_aio_write, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | .mmap = generic_file_mmap, |
Jens Axboe | 5ffc4ef | 2007-06-01 11:49:19 +0200 | [diff] [blame] | 284 | .splice_read = generic_file_splice_read, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | .fsync = file_fsync, |
| 286 | .open = hfsplus_file_open, |
| 287 | .release = hfsplus_file_release, |
| 288 | .ioctl = hfsplus_ioctl, |
| 289 | }; |
| 290 | |
| 291 | struct inode *hfsplus_new_inode(struct super_block *sb, int mode) |
| 292 | { |
| 293 | struct inode *inode = new_inode(sb); |
| 294 | if (!inode) |
| 295 | return NULL; |
| 296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | inode->i_ino = HFSPLUS_SB(sb).next_cnid++; |
| 298 | inode->i_mode = mode; |
David Howells | 4ac8489 | 2008-11-14 10:38:54 +1100 | [diff] [blame] | 299 | inode->i_uid = current_fsuid(); |
| 300 | inode->i_gid = current_fsgid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | inode->i_nlink = 1; |
| 302 | inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list); |
Matthias Kaehlcke | 895c23f | 2008-07-25 01:46:36 -0700 | [diff] [blame] | 304 | mutex_init(&HFSPLUS_I(inode).extents_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | atomic_set(&HFSPLUS_I(inode).opencnt, 0); |
| 306 | HFSPLUS_I(inode).flags = 0; |
| 307 | memset(HFSPLUS_I(inode).first_extents, 0, sizeof(hfsplus_extent_rec)); |
| 308 | memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec)); |
| 309 | HFSPLUS_I(inode).alloc_blocks = 0; |
| 310 | HFSPLUS_I(inode).first_blocks = 0; |
| 311 | HFSPLUS_I(inode).cached_start = 0; |
| 312 | HFSPLUS_I(inode).cached_blocks = 0; |
| 313 | HFSPLUS_I(inode).phys_size = 0; |
| 314 | HFSPLUS_I(inode).fs_blocks = 0; |
| 315 | HFSPLUS_I(inode).rsrc_inode = NULL; |
| 316 | if (S_ISDIR(inode->i_mode)) { |
| 317 | inode->i_size = 2; |
| 318 | HFSPLUS_SB(sb).folder_count++; |
| 319 | inode->i_op = &hfsplus_dir_inode_operations; |
| 320 | inode->i_fop = &hfsplus_dir_operations; |
| 321 | } else if (S_ISREG(inode->i_mode)) { |
| 322 | HFSPLUS_SB(sb).file_count++; |
| 323 | inode->i_op = &hfsplus_file_inode_operations; |
| 324 | inode->i_fop = &hfsplus_file_operations; |
| 325 | inode->i_mapping->a_ops = &hfsplus_aops; |
| 326 | HFSPLUS_I(inode).clump_blocks = HFSPLUS_SB(sb).data_clump_blocks; |
| 327 | } else if (S_ISLNK(inode->i_mode)) { |
| 328 | HFSPLUS_SB(sb).file_count++; |
| 329 | inode->i_op = &page_symlink_inode_operations; |
| 330 | inode->i_mapping->a_ops = &hfsplus_aops; |
| 331 | HFSPLUS_I(inode).clump_blocks = 1; |
| 332 | } else |
| 333 | HFSPLUS_SB(sb).file_count++; |
| 334 | insert_inode_hash(inode); |
| 335 | mark_inode_dirty(inode); |
| 336 | sb->s_dirt = 1; |
| 337 | |
| 338 | return inode; |
| 339 | } |
| 340 | |
| 341 | void hfsplus_delete_inode(struct inode *inode) |
| 342 | { |
| 343 | struct super_block *sb = inode->i_sb; |
| 344 | |
| 345 | if (S_ISDIR(inode->i_mode)) { |
| 346 | HFSPLUS_SB(sb).folder_count--; |
| 347 | sb->s_dirt = 1; |
| 348 | return; |
| 349 | } |
| 350 | HFSPLUS_SB(sb).file_count--; |
| 351 | if (S_ISREG(inode->i_mode)) { |
| 352 | if (!inode->i_nlink) { |
| 353 | inode->i_size = 0; |
| 354 | hfsplus_file_truncate(inode); |
| 355 | } |
| 356 | } else if (S_ISLNK(inode->i_mode)) { |
| 357 | inode->i_size = 0; |
| 358 | hfsplus_file_truncate(inode); |
| 359 | } |
| 360 | sb->s_dirt = 1; |
| 361 | } |
| 362 | |
| 363 | void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) |
| 364 | { |
| 365 | struct super_block *sb = inode->i_sb; |
| 366 | u32 count; |
| 367 | int i; |
| 368 | |
| 369 | memcpy(&HFSPLUS_I(inode).first_extents, &fork->extents, |
| 370 | sizeof(hfsplus_extent_rec)); |
| 371 | for (count = 0, i = 0; i < 8; i++) |
| 372 | count += be32_to_cpu(fork->extents[i].block_count); |
| 373 | HFSPLUS_I(inode).first_blocks = count; |
| 374 | memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec)); |
| 375 | HFSPLUS_I(inode).cached_start = 0; |
| 376 | HFSPLUS_I(inode).cached_blocks = 0; |
| 377 | |
| 378 | HFSPLUS_I(inode).alloc_blocks = be32_to_cpu(fork->total_blocks); |
| 379 | inode->i_size = HFSPLUS_I(inode).phys_size = be64_to_cpu(fork->total_size); |
| 380 | HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; |
| 381 | inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits); |
| 382 | HFSPLUS_I(inode).clump_blocks = be32_to_cpu(fork->clump_size) >> HFSPLUS_SB(sb).alloc_blksz_shift; |
| 383 | if (!HFSPLUS_I(inode).clump_blocks) |
| 384 | HFSPLUS_I(inode).clump_blocks = HFSPLUS_IS_RSRC(inode) ? HFSPLUS_SB(sb).rsrc_clump_blocks : |
| 385 | HFSPLUS_SB(sb).data_clump_blocks; |
| 386 | } |
| 387 | |
| 388 | void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork) |
| 389 | { |
| 390 | memcpy(&fork->extents, &HFSPLUS_I(inode).first_extents, |
| 391 | sizeof(hfsplus_extent_rec)); |
| 392 | fork->total_size = cpu_to_be64(inode->i_size); |
| 393 | fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode).alloc_blocks); |
| 394 | } |
| 395 | |
| 396 | int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) |
| 397 | { |
| 398 | hfsplus_cat_entry entry; |
| 399 | int res = 0; |
| 400 | u16 type; |
| 401 | |
| 402 | type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); |
| 403 | |
| 404 | HFSPLUS_I(inode).dev = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | if (type == HFSPLUS_FOLDER) { |
| 406 | struct hfsplus_cat_folder *folder = &entry.folder; |
| 407 | |
| 408 | if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) |
| 409 | /* panic? */; |
| 410 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, |
| 411 | sizeof(struct hfsplus_cat_folder)); |
| 412 | hfsplus_get_perms(inode, &folder->permissions, 1); |
| 413 | inode->i_nlink = 1; |
| 414 | inode->i_size = 2 + be32_to_cpu(folder->valence); |
| 415 | inode->i_atime = hfsp_mt2ut(folder->access_date); |
| 416 | inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); |
Roman Zippel | 9a4cad9 | 2006-01-18 17:43:09 -0800 | [diff] [blame] | 417 | inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); |
| 418 | HFSPLUS_I(inode).create_date = folder->create_date; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | HFSPLUS_I(inode).fs_blocks = 0; |
| 420 | inode->i_op = &hfsplus_dir_inode_operations; |
| 421 | inode->i_fop = &hfsplus_dir_operations; |
| 422 | } else if (type == HFSPLUS_FILE) { |
| 423 | struct hfsplus_cat_file *file = &entry.file; |
| 424 | |
| 425 | if (fd->entrylength < sizeof(struct hfsplus_cat_file)) |
| 426 | /* panic? */; |
| 427 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, |
| 428 | sizeof(struct hfsplus_cat_file)); |
| 429 | |
| 430 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_DATA(inode) ? |
| 431 | &file->data_fork : &file->rsrc_fork); |
| 432 | hfsplus_get_perms(inode, &file->permissions, 0); |
| 433 | inode->i_nlink = 1; |
| 434 | if (S_ISREG(inode->i_mode)) { |
| 435 | if (file->permissions.dev) |
| 436 | inode->i_nlink = be32_to_cpu(file->permissions.dev); |
| 437 | inode->i_op = &hfsplus_file_inode_operations; |
| 438 | inode->i_fop = &hfsplus_file_operations; |
| 439 | inode->i_mapping->a_ops = &hfsplus_aops; |
| 440 | } else if (S_ISLNK(inode->i_mode)) { |
| 441 | inode->i_op = &page_symlink_inode_operations; |
| 442 | inode->i_mapping->a_ops = &hfsplus_aops; |
| 443 | } else { |
| 444 | init_special_inode(inode, inode->i_mode, |
| 445 | be32_to_cpu(file->permissions.dev)); |
| 446 | } |
| 447 | inode->i_atime = hfsp_mt2ut(file->access_date); |
| 448 | inode->i_mtime = hfsp_mt2ut(file->content_mod_date); |
Roman Zippel | 9a4cad9 | 2006-01-18 17:43:09 -0800 | [diff] [blame] | 449 | inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); |
| 450 | HFSPLUS_I(inode).create_date = file->create_date; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | } else { |
Roman Zippel | 634725a | 2006-01-18 17:43:05 -0800 | [diff] [blame] | 452 | printk(KERN_ERR "hfs: bad catalog entry used to create inode\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | res = -EIO; |
| 454 | } |
| 455 | return res; |
| 456 | } |
| 457 | |
| 458 | int hfsplus_cat_write_inode(struct inode *inode) |
| 459 | { |
| 460 | struct inode *main_inode = inode; |
| 461 | struct hfs_find_data fd; |
| 462 | hfsplus_cat_entry entry; |
| 463 | |
| 464 | if (HFSPLUS_IS_RSRC(inode)) |
| 465 | main_inode = HFSPLUS_I(inode).rsrc_inode; |
| 466 | |
| 467 | if (!main_inode->i_nlink) |
| 468 | return 0; |
| 469 | |
| 470 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb).cat_tree, &fd)) |
| 471 | /* panic? */ |
| 472 | return -EIO; |
| 473 | |
| 474 | if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) |
| 475 | /* panic? */ |
| 476 | goto out; |
| 477 | |
| 478 | if (S_ISDIR(main_inode->i_mode)) { |
| 479 | struct hfsplus_cat_folder *folder = &entry.folder; |
| 480 | |
| 481 | if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) |
| 482 | /* panic? */; |
| 483 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, |
| 484 | sizeof(struct hfsplus_cat_folder)); |
| 485 | /* simple node checks? */ |
| 486 | hfsplus_set_perms(inode, &folder->permissions); |
| 487 | folder->access_date = hfsp_ut2mt(inode->i_atime); |
| 488 | folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); |
| 489 | folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); |
| 490 | folder->valence = cpu_to_be32(inode->i_size - 2); |
| 491 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, |
| 492 | sizeof(struct hfsplus_cat_folder)); |
| 493 | } else if (HFSPLUS_IS_RSRC(inode)) { |
| 494 | struct hfsplus_cat_file *file = &entry.file; |
| 495 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, |
| 496 | sizeof(struct hfsplus_cat_file)); |
| 497 | hfsplus_inode_write_fork(inode, &file->rsrc_fork); |
| 498 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, |
| 499 | sizeof(struct hfsplus_cat_file)); |
| 500 | } else { |
| 501 | struct hfsplus_cat_file *file = &entry.file; |
| 502 | |
| 503 | if (fd.entrylength < sizeof(struct hfsplus_cat_file)) |
| 504 | /* panic? */; |
| 505 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, |
| 506 | sizeof(struct hfsplus_cat_file)); |
| 507 | hfsplus_inode_write_fork(inode, &file->data_fork); |
| 508 | if (S_ISREG(inode->i_mode)) |
| 509 | HFSPLUS_I(inode).dev = inode->i_nlink; |
| 510 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) |
| 511 | HFSPLUS_I(inode).dev = kdev_t_to_nr(inode->i_rdev); |
| 512 | hfsplus_set_perms(inode, &file->permissions); |
| 513 | if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE) |
| 514 | file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); |
| 515 | else |
| 516 | file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); |
| 517 | file->access_date = hfsp_ut2mt(inode->i_atime); |
| 518 | file->content_mod_date = hfsp_ut2mt(inode->i_mtime); |
| 519 | file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); |
| 520 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, |
| 521 | sizeof(struct hfsplus_cat_file)); |
| 522 | } |
| 523 | out: |
| 524 | hfs_find_exit(&fd); |
| 525 | return 0; |
| 526 | } |