Lines Matching refs:sb
32 static int hfs_get_last_session(struct super_block *sb,
35 struct cdrom_device_info *cdi = disk_to_cdi(sb->s_bdev->bd_disk);
39 *size = i_size_read(sb->s_bdev->bd_inode) >> 9;
41 if (HFS_SB(sb)->session >= 0) {
47 te.cdte_track = HFS_SB(sb)->session;
73 int hfs_mdb_get(struct super_block *sb)
85 size = sb_min_blocksize(sb, HFS_SECTOR_SIZE);
89 if (hfs_get_last_session(sb, &part_start, &part_size))
93 bh = sb_bread512(sb, part_start + HFS_MDB_BLK, mdb);
104 if (hfs_part_find(sb, &part_start, &part_size))
108 HFS_SB(sb)->alloc_blksz = size = be32_to_cpu(mdb->drAlBlkSiz);
114 size = min(HFS_SB(sb)->alloc_blksz, (u32)PAGE_SIZE);
123 while (HFS_SB(sb)->alloc_blksz & (size - 1))
126 if (!sb_set_blocksize(sb, size)) {
131 bh = sb_bread512(sb, part_start + HFS_MDB_BLK, mdb);
137 HFS_SB(sb)->mdb_bh = bh;
138 HFS_SB(sb)->mdb = mdb;
141 HFS_SB(sb)->part_start = part_start;
142 HFS_SB(sb)->fs_ablocks = be16_to_cpu(mdb->drNmAlBlks);
143 HFS_SB(sb)->fs_div = HFS_SB(sb)->alloc_blksz >> sb->s_blocksize_bits;
144 HFS_SB(sb)->clumpablks = be32_to_cpu(mdb->drClpSiz) /
145 HFS_SB(sb)->alloc_blksz;
146 if (!HFS_SB(sb)->clumpablks)
147 HFS_SB(sb)->clumpablks = 1;
148 HFS_SB(sb)->fs_start = (be16_to_cpu(mdb->drAlBlSt) + part_start) >>
149 (sb->s_blocksize_bits - HFS_SECTOR_SIZE_BITS);
152 HFS_SB(sb)->free_ablocks = be16_to_cpu(mdb->drFreeBks);
153 HFS_SB(sb)->next_id = be32_to_cpu(mdb->drNxtCNID);
154 HFS_SB(sb)->root_files = be16_to_cpu(mdb->drNmFls);
155 HFS_SB(sb)->root_dirs = be16_to_cpu(mdb->drNmRtDirs);
156 HFS_SB(sb)->file_count = be32_to_cpu(mdb->drFilCnt);
157 HFS_SB(sb)->folder_count = be32_to_cpu(mdb->drDirCnt);
161 bh = sb_bread512(sb, sect, mdb2);
164 HFS_SB(sb)->alt_mdb_bh = bh;
165 HFS_SB(sb)->alt_mdb = mdb2;
170 if (!HFS_SB(sb)->alt_mdb) {
175 HFS_SB(sb)->bitmap = kmalloc(8192, GFP_KERNEL);
176 if (!HFS_SB(sb)->bitmap)
182 size = (HFS_SB(sb)->fs_ablocks + 8) / 8;
183 ptr = (u8 *)HFS_SB(sb)->bitmap;
185 bh = sb_bread(sb, off >> sb->s_blocksize_bits);
190 off2 = off & (sb->s_blocksize - 1);
191 len = min((int)sb->s_blocksize - off2, size);
199 HFS_SB(sb)->ext_tree = hfs_btree_open(sb, HFS_EXT_CNID, hfs_ext_keycmp);
200 if (!HFS_SB(sb)->ext_tree) {
204 HFS_SB(sb)->cat_tree = hfs_btree_open(sb, HFS_CAT_CNID, hfs_cat_keycmp);
205 if (!HFS_SB(sb)->cat_tree) {
213 sb->s_flags |= SB_RDONLY;
217 sb->s_flags |= SB_RDONLY;
219 if (!sb_rdonly(sb)) {
227 mark_buffer_dirty(HFS_SB(sb)->mdb_bh);
228 sync_dirty_buffer(HFS_SB(sb)->mdb_bh);
236 hfs_mdb_put(sb);
264 void hfs_mdb_commit(struct super_block *sb)
266 struct hfs_mdb *mdb = HFS_SB(sb)->mdb;
268 if (sb_rdonly(sb))
271 lock_buffer(HFS_SB(sb)->mdb_bh);
272 if (test_and_clear_bit(HFS_FLG_MDB_DIRTY, &HFS_SB(sb)->flags)) {
275 mdb->drFreeBks = cpu_to_be16(HFS_SB(sb)->free_ablocks);
276 mdb->drNxtCNID = cpu_to_be32(HFS_SB(sb)->next_id);
277 mdb->drNmFls = cpu_to_be16(HFS_SB(sb)->root_files);
278 mdb->drNmRtDirs = cpu_to_be16(HFS_SB(sb)->root_dirs);
279 mdb->drFilCnt = cpu_to_be32(HFS_SB(sb)->file_count);
280 mdb->drDirCnt = cpu_to_be32(HFS_SB(sb)->folder_count);
283 mark_buffer_dirty(HFS_SB(sb)->mdb_bh);
289 if (test_and_clear_bit(HFS_FLG_ALT_MDB_DIRTY, &HFS_SB(sb)->flags) &&
290 HFS_SB(sb)->alt_mdb) {
291 hfs_inode_write_fork(HFS_SB(sb)->ext_tree->inode, mdb->drXTExtRec,
293 hfs_inode_write_fork(HFS_SB(sb)->cat_tree->inode, mdb->drCTExtRec,
296 lock_buffer(HFS_SB(sb)->alt_mdb_bh);
297 memcpy(HFS_SB(sb)->alt_mdb, HFS_SB(sb)->mdb, HFS_SECTOR_SIZE);
298 HFS_SB(sb)->alt_mdb->drAtrb |= cpu_to_be16(HFS_SB_ATTRIB_UNMNT);
299 HFS_SB(sb)->alt_mdb->drAtrb &= cpu_to_be16(~HFS_SB_ATTRIB_INCNSTNT);
300 unlock_buffer(HFS_SB(sb)->alt_mdb_bh);
302 mark_buffer_dirty(HFS_SB(sb)->alt_mdb_bh);
303 sync_dirty_buffer(HFS_SB(sb)->alt_mdb_bh);
306 if (test_and_clear_bit(HFS_FLG_BITMAP_DIRTY, &HFS_SB(sb)->flags)) {
312 block = be16_to_cpu(HFS_SB(sb)->mdb->drVBMSt) + HFS_SB(sb)->part_start;
313 off = (block << HFS_SECTOR_SIZE_BITS) & (sb->s_blocksize - 1);
314 block >>= sb->s_blocksize_bits - HFS_SECTOR_SIZE_BITS;
315 size = (HFS_SB(sb)->fs_ablocks + 7) / 8;
316 ptr = (u8 *)HFS_SB(sb)->bitmap;
318 bh = sb_bread(sb, block);
323 len = min((int)sb->s_blocksize - off, size);
337 unlock_buffer(HFS_SB(sb)->mdb_bh);
340 void hfs_mdb_close(struct super_block *sb)
343 if (sb_rdonly(sb))
345 HFS_SB(sb)->mdb->drAtrb |= cpu_to_be16(HFS_SB_ATTRIB_UNMNT);
346 HFS_SB(sb)->mdb->drAtrb &= cpu_to_be16(~HFS_SB_ATTRIB_INCNSTNT);
347 mark_buffer_dirty(HFS_SB(sb)->mdb_bh);
354 void hfs_mdb_put(struct super_block *sb)
356 if (!HFS_SB(sb))
359 hfs_btree_close(HFS_SB(sb)->ext_tree);
360 hfs_btree_close(HFS_SB(sb)->cat_tree);
363 brelse(HFS_SB(sb)->mdb_bh);
364 brelse(HFS_SB(sb)->alt_mdb_bh);
366 unload_nls(HFS_SB(sb)->nls_io);
367 unload_nls(HFS_SB(sb)->nls_disk);
369 kfree(HFS_SB(sb)->bitmap);
370 kfree(HFS_SB(sb));
371 sb->s_fs_info = NULL;