| 1 |
1275 |
phoenix |
/*
|
| 2 |
|
|
* linux/fs/hfsplus/super.c
|
| 3 |
|
|
*
|
| 4 |
|
|
* Copyright (C) 2001
|
| 5 |
|
|
* Brad Boyer (flar@allandria.com)
|
| 6 |
|
|
* (C) 2003 Ardis Technologies <roman@ardistech.com>
|
| 7 |
|
|
*
|
| 8 |
|
|
*/
|
| 9 |
|
|
|
| 10 |
|
|
#include <linux/config.h>
|
| 11 |
|
|
#include <linux/module.h>
|
| 12 |
|
|
#include <linux/init.h>
|
| 13 |
|
|
#include <linux/fs.h>
|
| 14 |
|
|
#include <linux/sched.h>
|
| 15 |
|
|
#include <linux/slab.h>
|
| 16 |
|
|
#include <linux/version.h>
|
| 17 |
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
|
| 18 |
|
|
#include <linux/locks.h>
|
| 19 |
|
|
#else
|
| 20 |
|
|
#include <linux/buffer_head.h>
|
| 21 |
|
|
#include <linux/vfs.h>
|
| 22 |
|
|
|
| 23 |
|
|
static struct inode *hfsplus_alloc_inode(struct super_block *sb);
|
| 24 |
|
|
static void hfsplus_destroy_inode(struct inode *inode);
|
| 25 |
|
|
#endif
|
| 26 |
|
|
|
| 27 |
|
|
#include "hfsplus_fs.h"
|
| 28 |
|
|
|
| 29 |
|
|
void hfsplus_inode_check(struct super_block *sb)
|
| 30 |
|
|
{
|
| 31 |
|
|
#if 0
|
| 32 |
|
|
u32 cnt = atomic_read(&HFSPLUS_SB(sb).inode_cnt);
|
| 33 |
|
|
u32 last_cnt = HFSPLUS_SB(sb).last_inode_cnt;
|
| 34 |
|
|
|
| 35 |
|
|
if (cnt <= (last_cnt / 2) ||
|
| 36 |
|
|
cnt >= (last_cnt * 2)) {
|
| 37 |
|
|
HFSPLUS_SB(sb).last_inode_cnt = cnt;
|
| 38 |
|
|
printk("inode_check: %u,%u,%u\n", cnt, last_cnt,
|
| 39 |
|
|
HFSPLUS_SB(sb).cat_tree ? HFSPLUS_SB(sb).cat_tree->node_hash_cnt : 0);
|
| 40 |
|
|
}
|
| 41 |
|
|
#endif
|
| 42 |
|
|
}
|
| 43 |
|
|
|
| 44 |
|
|
static void hfsplus_read_inode(struct inode *inode)
|
| 45 |
|
|
{
|
| 46 |
|
|
struct hfsplus_find_data fd;
|
| 47 |
|
|
struct hfsplus_vh *vhdr;
|
| 48 |
|
|
int err;
|
| 49 |
|
|
|
| 50 |
|
|
atomic_inc(&HFSPLUS_SB(inode->i_sb).inode_cnt);
|
| 51 |
|
|
hfsplus_inode_check(inode->i_sb);
|
| 52 |
|
|
if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) {
|
| 53 |
|
|
read_inode:
|
| 54 |
|
|
HFSPLUS_I(inode).flags = 0;
|
| 55 |
|
|
hfsplus_find_init(HFSPLUS_SB(inode->i_sb).cat_tree, &fd);
|
| 56 |
|
|
err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
|
| 57 |
|
|
if (!err)
|
| 58 |
|
|
err = hfsplus_cat_read_inode(inode, &fd);
|
| 59 |
|
|
hfsplus_find_exit(&fd);
|
| 60 |
|
|
if (err)
|
| 61 |
|
|
goto bad_inode;
|
| 62 |
|
|
return;
|
| 63 |
|
|
}
|
| 64 |
|
|
vhdr = HFSPLUS_SB(inode->i_sb).s_vhdr;
|
| 65 |
|
|
switch(inode->i_ino) {
|
| 66 |
|
|
case HFSPLUS_ROOT_CNID:
|
| 67 |
|
|
goto read_inode;
|
| 68 |
|
|
case HFSPLUS_EXT_CNID:
|
| 69 |
|
|
hfsplus_inode_read_fork(inode, &vhdr->ext_file);
|
| 70 |
|
|
inode->i_mapping->a_ops = &hfsplus_btree_aops;
|
| 71 |
|
|
break;
|
| 72 |
|
|
case HFSPLUS_CAT_CNID:
|
| 73 |
|
|
hfsplus_inode_read_fork(inode, &vhdr->cat_file);
|
| 74 |
|
|
inode->i_mapping->a_ops = &hfsplus_btree_aops;
|
| 75 |
|
|
break;
|
| 76 |
|
|
case HFSPLUS_ALLOC_CNID:
|
| 77 |
|
|
hfsplus_inode_read_fork(inode, &vhdr->alloc_file);
|
| 78 |
|
|
break;
|
| 79 |
|
|
case HFSPLUS_START_CNID:
|
| 80 |
|
|
hfsplus_inode_read_fork(inode, &vhdr->start_file);
|
| 81 |
|
|
break;
|
| 82 |
|
|
case HFSPLUS_ATTR_CNID:
|
| 83 |
|
|
hfsplus_inode_read_fork(inode, &vhdr->attr_file);
|
| 84 |
|
|
inode->i_mapping->a_ops = &hfsplus_btree_aops;
|
| 85 |
|
|
break;
|
| 86 |
|
|
default:
|
| 87 |
|
|
goto bad_inode;
|
| 88 |
|
|
}
|
| 89 |
|
|
|
| 90 |
|
|
return;
|
| 91 |
|
|
|
| 92 |
|
|
bad_inode:
|
| 93 |
|
|
make_bad_inode(inode);
|
| 94 |
|
|
}
|
| 95 |
|
|
|
| 96 |
|
|
void hfsplus_write_inode(struct inode *inode, int unused)
|
| 97 |
|
|
{
|
| 98 |
|
|
struct hfsplus_vh *vhdr;
|
| 99 |
|
|
|
| 100 |
|
|
dprint(DBG_INODE, "hfsplus_write_inode: %lu\n", inode->i_ino);
|
| 101 |
|
|
if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) {
|
| 102 |
|
|
hfsplus_cat_write_inode(inode);
|
| 103 |
|
|
return;
|
| 104 |
|
|
}
|
| 105 |
|
|
vhdr = HFSPLUS_SB(inode->i_sb).s_vhdr;
|
| 106 |
|
|
switch (inode->i_ino) {
|
| 107 |
|
|
case HFSPLUS_ROOT_CNID:
|
| 108 |
|
|
hfsplus_cat_write_inode(inode);
|
| 109 |
|
|
break;
|
| 110 |
|
|
case HFSPLUS_EXT_CNID:
|
| 111 |
|
|
if (vhdr->ext_file.total_size != cpu_to_be64(inode->i_size)) {
|
| 112 |
|
|
HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
|
| 113 |
|
|
inode->i_sb->s_dirt = 1;
|
| 114 |
|
|
}
|
| 115 |
|
|
hfsplus_inode_write_fork(inode, &vhdr->ext_file);
|
| 116 |
|
|
hfsplus_write_btree(HFSPLUS_SB(inode->i_sb).ext_tree);
|
| 117 |
|
|
break;
|
| 118 |
|
|
case HFSPLUS_CAT_CNID:
|
| 119 |
|
|
if (vhdr->cat_file.total_size != cpu_to_be64(inode->i_size)) {
|
| 120 |
|
|
HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
|
| 121 |
|
|
inode->i_sb->s_dirt = 1;
|
| 122 |
|
|
}
|
| 123 |
|
|
hfsplus_inode_write_fork(inode, &vhdr->cat_file);
|
| 124 |
|
|
hfsplus_write_btree(HFSPLUS_SB(inode->i_sb).cat_tree);
|
| 125 |
|
|
break;
|
| 126 |
|
|
case HFSPLUS_ALLOC_CNID:
|
| 127 |
|
|
if (vhdr->alloc_file.total_size != cpu_to_be64(inode->i_size)) {
|
| 128 |
|
|
HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
|
| 129 |
|
|
inode->i_sb->s_dirt = 1;
|
| 130 |
|
|
}
|
| 131 |
|
|
hfsplus_inode_write_fork(inode, &vhdr->alloc_file);
|
| 132 |
|
|
break;
|
| 133 |
|
|
case HFSPLUS_START_CNID:
|
| 134 |
|
|
if (vhdr->start_file.total_size != cpu_to_be64(inode->i_size)) {
|
| 135 |
|
|
HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
|
| 136 |
|
|
inode->i_sb->s_dirt = 1;
|
| 137 |
|
|
}
|
| 138 |
|
|
hfsplus_inode_write_fork(inode, &vhdr->start_file);
|
| 139 |
|
|
break;
|
| 140 |
|
|
case HFSPLUS_ATTR_CNID:
|
| 141 |
|
|
if (vhdr->attr_file.total_size != cpu_to_be64(inode->i_size)) {
|
| 142 |
|
|
HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
|
| 143 |
|
|
inode->i_sb->s_dirt = 1;
|
| 144 |
|
|
}
|
| 145 |
|
|
hfsplus_inode_write_fork(inode, &vhdr->attr_file);
|
| 146 |
|
|
hfsplus_write_btree(HFSPLUS_SB(inode->i_sb).attr_tree);
|
| 147 |
|
|
break;
|
| 148 |
|
|
}
|
| 149 |
|
|
}
|
| 150 |
|
|
|
| 151 |
|
|
static void hfsplus_clear_inode(struct inode *inode)
|
| 152 |
|
|
{
|
| 153 |
|
|
atomic_dec(&HFSPLUS_SB(inode->i_sb).inode_cnt);
|
| 154 |
|
|
if (HFSPLUS_IS_RSRC(inode)) {
|
| 155 |
|
|
HFSPLUS_I(HFSPLUS_I(inode).rsrc_inode).rsrc_inode = NULL;
|
| 156 |
|
|
iput(HFSPLUS_I(inode).rsrc_inode);
|
| 157 |
|
|
}
|
| 158 |
|
|
hfsplus_inode_check(inode->i_sb);
|
| 159 |
|
|
}
|
| 160 |
|
|
|
| 161 |
|
|
static void hfsplus_write_super(struct super_block *sb)
|
| 162 |
|
|
{
|
| 163 |
|
|
struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
|
| 164 |
|
|
|
| 165 |
|
|
dprint(DBG_SUPER, "hfsplus_write_super\n");
|
| 166 |
|
|
sb->s_dirt = 0;
|
| 167 |
|
|
if (sb->s_flags & MS_RDONLY)
|
| 168 |
|
|
/* warn? */
|
| 169 |
|
|
return;
|
| 170 |
|
|
|
| 171 |
|
|
vhdr->free_blocks = cpu_to_be32(HFSPLUS_SB(sb).free_blocks);
|
| 172 |
|
|
vhdr->next_alloc = cpu_to_be32(HFSPLUS_SB(sb).next_alloc);
|
| 173 |
|
|
vhdr->next_cnid = cpu_to_be32(HFSPLUS_SB(sb).next_cnid);
|
| 174 |
|
|
vhdr->folder_count = cpu_to_be32(HFSPLUS_SB(sb).folder_count);
|
| 175 |
|
|
vhdr->file_count = cpu_to_be32(HFSPLUS_SB(sb).file_count);
|
| 176 |
|
|
|
| 177 |
|
|
mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh);
|
| 178 |
|
|
if (HFSPLUS_SB(sb).flags & HFSPLUS_SB_WRITEBACKUP) {
|
| 179 |
|
|
if (HFSPLUS_SB(sb).sect_count) {
|
| 180 |
|
|
struct buffer_head *bh;
|
| 181 |
|
|
u32 block, offset;
|
| 182 |
|
|
|
| 183 |
|
|
block = HFSPLUS_SB(sb).blockoffset;
|
| 184 |
|
|
block += (HFSPLUS_SB(sb).sect_count - 2) >> (sb->s_blocksize_bits - 9);
|
| 185 |
|
|
offset = ((HFSPLUS_SB(sb).sect_count - 2) << 9) & (sb->s_blocksize - 1);
|
| 186 |
|
|
//printk("backup: %u,%u,%u,%u\n", HFSPLUS_SB(sb).blockoffset,
|
| 187 |
|
|
// HFSPLUS_SB(sb).sect_count, block, offset);
|
| 188 |
|
|
bh = sb_bread(sb, block);
|
| 189 |
|
|
vhdr = (struct hfsplus_vh *)(bh->b_data + offset);
|
| 190 |
|
|
if (be16_to_cpu(vhdr->signature) == HFSPLUS_VOLHEAD_SIG) {
|
| 191 |
|
|
memcpy(vhdr, HFSPLUS_SB(sb).s_vhdr, sizeof(*vhdr));
|
| 192 |
|
|
mark_buffer_dirty(bh);
|
| 193 |
|
|
brelse(bh);
|
| 194 |
|
|
} else
|
| 195 |
|
|
printk("backup not found!\n");
|
| 196 |
|
|
}
|
| 197 |
|
|
HFSPLUS_SB(sb).flags &= ~HFSPLUS_SB_WRITEBACKUP;
|
| 198 |
|
|
}
|
| 199 |
|
|
}
|
| 200 |
|
|
|
| 201 |
|
|
static void hfsplus_put_super(struct super_block *sb)
|
| 202 |
|
|
{
|
| 203 |
|
|
dprint(DBG_SUPER, "hfsplus_put_super\n");
|
| 204 |
|
|
if (!(sb->s_flags & MS_RDONLY)) {
|
| 205 |
|
|
struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
|
| 206 |
|
|
|
| 207 |
|
|
vhdr->modify_date = hfsp_now2mt();
|
| 208 |
|
|
vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_UNMNT);
|
| 209 |
|
|
vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_INCNSTNT);
|
| 210 |
|
|
mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh);
|
| 211 |
|
|
ll_rw_block(WRITE, 1, &HFSPLUS_SB(sb).s_vhbh);
|
| 212 |
|
|
wait_on_buffer(HFSPLUS_SB(sb).s_vhbh);
|
| 213 |
|
|
}
|
| 214 |
|
|
|
| 215 |
|
|
hfsplus_close_btree(HFSPLUS_SB(sb).cat_tree);
|
| 216 |
|
|
hfsplus_close_btree(HFSPLUS_SB(sb).ext_tree);
|
| 217 |
|
|
iput(HFSPLUS_SB(sb).alloc_file);
|
| 218 |
|
|
iput(HFSPLUS_SB(sb).hidden_dir);
|
| 219 |
|
|
brelse(HFSPLUS_SB(sb).s_vhbh);
|
| 220 |
|
|
}
|
| 221 |
|
|
|
| 222 |
|
|
static int hfsplus_statfs(struct super_block *sb, struct statfs *buf)
|
| 223 |
|
|
{
|
| 224 |
|
|
buf->f_type = HFSPLUS_SUPER_MAGIC;
|
| 225 |
|
|
buf->f_bsize = sb->s_blocksize;
|
| 226 |
|
|
buf->f_blocks = be32_to_cpu(HFSPLUS_SB(sb).s_vhdr->total_blocks);
|
| 227 |
|
|
buf->f_bfree = HFSPLUS_SB(sb).free_blocks;
|
| 228 |
|
|
buf->f_bavail = buf->f_bfree;
|
| 229 |
|
|
buf->f_files = 0xFFFFFFFF;
|
| 230 |
|
|
buf->f_ffree = 0xFFFFFFFF - HFSPLUS_SB(sb).next_cnid;
|
| 231 |
|
|
buf->f_namelen = HFSPLUS_MAX_STRLEN;
|
| 232 |
|
|
|
| 233 |
|
|
return 0;
|
| 234 |
|
|
}
|
| 235 |
|
|
|
| 236 |
|
|
int hfsplus_remount(struct super_block *sb, int *flags, char *data)
|
| 237 |
|
|
{
|
| 238 |
|
|
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
|
| 239 |
|
|
return 0;
|
| 240 |
|
|
if (!(*flags & MS_RDONLY)) {
|
| 241 |
|
|
struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
|
| 242 |
|
|
|
| 243 |
|
|
if ((vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_INCNSTNT)) ||
|
| 244 |
|
|
!(vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_UNMNT))) {
|
| 245 |
|
|
printk("HFS+-fs warning: Filesystem was not cleanly unmounted, "
|
| 246 |
|
|
"running fsck.hfsplus is recommended. leaving read-only.\n");
|
| 247 |
|
|
sb->s_flags |= MS_RDONLY;
|
| 248 |
|
|
*flags |= MS_RDONLY;
|
| 249 |
|
|
} else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) {
|
| 250 |
|
|
printk("HFS+-fs: Filesystem is marked locked, leaving read-only.\n");
|
| 251 |
|
|
sb->s_flags |= MS_RDONLY;
|
| 252 |
|
|
*flags |= MS_RDONLY;
|
| 253 |
|
|
}
|
| 254 |
|
|
}
|
| 255 |
|
|
return 0;
|
| 256 |
|
|
}
|
| 257 |
|
|
|
| 258 |
|
|
static struct super_operations hfsplus_sops = {
|
| 259 |
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
|
| 260 |
|
|
.alloc_inode = hfsplus_alloc_inode,
|
| 261 |
|
|
.destroy_inode = hfsplus_destroy_inode,
|
| 262 |
|
|
#endif
|
| 263 |
|
|
.read_inode = hfsplus_read_inode,
|
| 264 |
|
|
.write_inode = hfsplus_write_inode,
|
| 265 |
|
|
.clear_inode = hfsplus_clear_inode,
|
| 266 |
|
|
.put_super = hfsplus_put_super,
|
| 267 |
|
|
.write_super = hfsplus_write_super,
|
| 268 |
|
|
.statfs = hfsplus_statfs,
|
| 269 |
|
|
.remount_fs = hfsplus_remount,
|
| 270 |
|
|
};
|
| 271 |
|
|
|
| 272 |
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
|
| 273 |
|
|
struct super_block *hfsplus_read_super(struct super_block *sb, void *data,
|
| 274 |
|
|
int silent)
|
| 275 |
|
|
#else
|
| 276 |
|
|
static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
|
| 277 |
|
|
#endif
|
| 278 |
|
|
{
|
| 279 |
|
|
struct hfsplus_vh *vhdr;
|
| 280 |
|
|
struct hfsplus_sb_info *sbi;
|
| 281 |
|
|
hfsplus_cat_entry entry;
|
| 282 |
|
|
struct hfsplus_find_data fd;
|
| 283 |
|
|
struct qstr str;
|
| 284 |
|
|
int err = -EINVAL;
|
| 285 |
|
|
|
| 286 |
|
|
sbi = kmalloc(sizeof(struct hfsplus_sb_info), GFP_KERNEL);
|
| 287 |
|
|
if (!sbi) {
|
| 288 |
|
|
err = -ENOMEM;
|
| 289 |
|
|
goto out2;
|
| 290 |
|
|
}
|
| 291 |
|
|
memset(sbi, 0, sizeof(HFSPLUS_SB(sb)));
|
| 292 |
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
|
| 293 |
|
|
if (sizeof(struct inode) - offsetof(struct inode, u) < sizeof(struct hfsplus_inode_info)) {
|
| 294 |
|
|
extern void hfsplus_inode_info_exceeded_space_in_inode_error(void);
|
| 295 |
|
|
hfsplus_inode_info_exceeded_space_in_inode_error();
|
| 296 |
|
|
}
|
| 297 |
|
|
|
| 298 |
|
|
if (sizeof(struct super_block) - offsetof(struct super_block, u) < sizeof(struct hfsplus_sb_info)) {
|
| 299 |
|
|
extern void hfsplus_sb_info_exceeded_space_in_super_block_error(void);
|
| 300 |
|
|
hfsplus_sb_info_exceeded_space_in_super_block_error();
|
| 301 |
|
|
}
|
| 302 |
|
|
|
| 303 |
|
|
INIT_LIST_HEAD(&HFSPLUS_SB(sb).rsrc_inodes);
|
| 304 |
|
|
#else
|
| 305 |
|
|
sb->s_fs_info = sbi;
|
| 306 |
|
|
INIT_HLIST_HEAD(&sbi->rsrc_inodes);
|
| 307 |
|
|
#endif
|
| 308 |
|
|
fill_defaults(sbi);
|
| 309 |
|
|
if (!parse_options(data, sbi)) {
|
| 310 |
|
|
if (!silent)
|
| 311 |
|
|
printk("HFS+-fs: unable to parse mount options\n");
|
| 312 |
|
|
err = -EINVAL;
|
| 313 |
|
|
goto out2;
|
| 314 |
|
|
}
|
| 315 |
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
|
| 316 |
|
|
fill_current(sbi, &HFSPLUS_SB(sb));
|
| 317 |
|
|
kfree(sbi);
|
| 318 |
|
|
#endif
|
| 319 |
|
|
|
| 320 |
|
|
/* Grab the volume header */
|
| 321 |
|
|
if (hfsplus_read_wrapper(sb)) {
|
| 322 |
|
|
if (!silent)
|
| 323 |
|
|
printk("HFS+-fs: unable to find HFS+ superblock\n");
|
| 324 |
|
|
err = -EINVAL;
|
| 325 |
|
|
goto out2;
|
| 326 |
|
|
}
|
| 327 |
|
|
vhdr = HFSPLUS_SB(sb).s_vhdr;
|
| 328 |
|
|
|
| 329 |
|
|
/* Copy parts of the volume header into the superblock */
|
| 330 |
|
|
sb->s_magic = be16_to_cpu(vhdr->signature);
|
| 331 |
|
|
if (be16_to_cpu(vhdr->version) != HFSPLUS_CURRENT_VERSION) {
|
| 332 |
|
|
if (!silent)
|
| 333 |
|
|
printk("HFS+-fs: wrong filesystem version\n");
|
| 334 |
|
|
goto cleanup;
|
| 335 |
|
|
}
|
| 336 |
|
|
HFSPLUS_SB(sb).total_blocks = be32_to_cpu(vhdr->total_blocks);
|
| 337 |
|
|
HFSPLUS_SB(sb).free_blocks = be32_to_cpu(vhdr->free_blocks);
|
| 338 |
|
|
HFSPLUS_SB(sb).next_alloc = be32_to_cpu(vhdr->next_alloc);
|
| 339 |
|
|
HFSPLUS_SB(sb).next_cnid = be32_to_cpu(vhdr->next_cnid);
|
| 340 |
|
|
HFSPLUS_SB(sb).file_count = be32_to_cpu(vhdr->file_count);
|
| 341 |
|
|
HFSPLUS_SB(sb).folder_count = be32_to_cpu(vhdr->folder_count);
|
| 342 |
|
|
|
| 343 |
|
|
/* Set up operations so we can load metadata */
|
| 344 |
|
|
sb->s_op = &hfsplus_sops;
|
| 345 |
|
|
|
| 346 |
|
|
if ((vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_INCNSTNT)) ||
|
| 347 |
|
|
!(vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_UNMNT))) {
|
| 348 |
|
|
if (!silent)
|
| 349 |
|
|
printk("HFS+-fs warning: Filesystem was not cleanly unmounted, "
|
| 350 |
|
|
"running fsck.hfsplus is recommended. mounting read-only.\n");
|
| 351 |
|
|
sb->s_flags |= MS_RDONLY;
|
| 352 |
|
|
} else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) {
|
| 353 |
|
|
if (!silent)
|
| 354 |
|
|
printk("HFS+-fs: Filesystem is marked locked, mounting read-only.\n");
|
| 355 |
|
|
sb->s_flags |= MS_RDONLY;
|
| 356 |
|
|
}
|
| 357 |
|
|
|
| 358 |
|
|
/* Load metadata objects (B*Trees) */
|
| 359 |
|
|
HFSPLUS_SB(sb).ext_tree = hfsplus_open_btree(sb, HFSPLUS_EXT_CNID);
|
| 360 |
|
|
if (!HFSPLUS_SB(sb).ext_tree) {
|
| 361 |
|
|
if (!silent)
|
| 362 |
|
|
printk("HFS+-fs: failed to load extents file\n");
|
| 363 |
|
|
goto cleanup;
|
| 364 |
|
|
}
|
| 365 |
|
|
HFSPLUS_SB(sb).cat_tree = hfsplus_open_btree(sb, HFSPLUS_CAT_CNID);
|
| 366 |
|
|
if (!HFSPLUS_SB(sb).cat_tree) {
|
| 367 |
|
|
if (!silent)
|
| 368 |
|
|
printk("HFS+-fs: failed to load catalog file\n");
|
| 369 |
|
|
goto cleanup;
|
| 370 |
|
|
}
|
| 371 |
|
|
|
| 372 |
|
|
HFSPLUS_SB(sb).alloc_file = iget(sb, HFSPLUS_ALLOC_CNID);
|
| 373 |
|
|
if (!HFSPLUS_SB(sb).alloc_file) {
|
| 374 |
|
|
if (!silent)
|
| 375 |
|
|
printk("HFS+-fs: failed to load allocation file\n");
|
| 376 |
|
|
goto cleanup;
|
| 377 |
|
|
}
|
| 378 |
|
|
|
| 379 |
|
|
/* Load the root directory */
|
| 380 |
|
|
sb->s_root = d_alloc_root(iget(sb, HFSPLUS_ROOT_CNID));
|
| 381 |
|
|
if (!sb->s_root) {
|
| 382 |
|
|
if (!silent)
|
| 383 |
|
|
printk("HFS+-fs: failed to load root directory\n");
|
| 384 |
|
|
goto cleanup;
|
| 385 |
|
|
}
|
| 386 |
|
|
|
| 387 |
|
|
str.len = sizeof(HFSP_HIDDENDIR_NAME) - 1;
|
| 388 |
|
|
str.name = HFSP_HIDDENDIR_NAME;
|
| 389 |
|
|
hfsplus_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
|
| 390 |
|
|
hfsplus_fill_cat_key(fd.search_key, HFSPLUS_ROOT_CNID, &str);
|
| 391 |
|
|
if (!hfsplus_btree_find_entry(&fd, &entry, sizeof(entry))) {
|
| 392 |
|
|
hfsplus_find_exit(&fd);
|
| 393 |
|
|
if (entry.type != cpu_to_be16(HFSPLUS_FOLDER))
|
| 394 |
|
|
goto cleanup;
|
| 395 |
|
|
HFSPLUS_SB(sb).hidden_dir = iget(sb, be32_to_cpu(entry.folder.id));
|
| 396 |
|
|
if (!HFSPLUS_SB(sb).hidden_dir)
|
| 397 |
|
|
goto cleanup;
|
| 398 |
|
|
} else
|
| 399 |
|
|
hfsplus_find_exit(&fd);
|
| 400 |
|
|
|
| 401 |
|
|
if (sb->s_flags & MS_RDONLY)
|
| 402 |
|
|
goto out;
|
| 403 |
|
|
|
| 404 |
|
|
/* H+LX == hfsplusutils, H+Lx == this driver, H+lx is unused
|
| 405 |
|
|
* all three are registered with Apple for our use
|
| 406 |
|
|
*/
|
| 407 |
|
|
vhdr->last_mount_vers = cpu_to_be32(HFSP_MOUNT_VERSION);
|
| 408 |
|
|
vhdr->modify_date = hfsp_now2mt();
|
| 409 |
|
|
vhdr->write_count = cpu_to_be32(be32_to_cpu(vhdr->write_count) + 1);
|
| 410 |
|
|
vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_UNMNT);
|
| 411 |
|
|
vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_INCNSTNT);
|
| 412 |
|
|
mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh);
|
| 413 |
|
|
ll_rw_block(WRITE, 1, &HFSPLUS_SB(sb).s_vhbh);
|
| 414 |
|
|
wait_on_buffer(HFSPLUS_SB(sb).s_vhbh);
|
| 415 |
|
|
|
| 416 |
|
|
if (!HFSPLUS_SB(sb).hidden_dir) {
|
| 417 |
|
|
printk("HFS+: create hidden dir...\n");
|
| 418 |
|
|
HFSPLUS_SB(sb).hidden_dir = hfsplus_new_inode(sb, S_IFDIR);
|
| 419 |
|
|
hfsplus_create_cat(HFSPLUS_SB(sb).hidden_dir->i_ino, sb->s_root->d_inode,
|
| 420 |
|
|
&str, HFSPLUS_SB(sb).hidden_dir);
|
| 421 |
|
|
mark_inode_dirty(HFSPLUS_SB(sb).hidden_dir);
|
| 422 |
|
|
}
|
| 423 |
|
|
out:
|
| 424 |
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
|
| 425 |
|
|
return sb;
|
| 426 |
|
|
#else
|
| 427 |
|
|
return 0;
|
| 428 |
|
|
#endif
|
| 429 |
|
|
|
| 430 |
|
|
cleanup:
|
| 431 |
|
|
hfsplus_put_super(sb);
|
| 432 |
|
|
out2:
|
| 433 |
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
|
| 434 |
|
|
return NULL;
|
| 435 |
|
|
#else
|
| 436 |
|
|
return err;
|
| 437 |
|
|
#endif
|
| 438 |
|
|
}
|
| 439 |
|
|
|
| 440 |
|
|
MODULE_AUTHOR("Brad Boyer");
|
| 441 |
|
|
MODULE_DESCRIPTION("Extended Macintosh Filesystem");
|
| 442 |
|
|
MODULE_LICENSE("GPL");
|
| 443 |
|
|
|
| 444 |
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
|
| 445 |
|
|
|
| 446 |
|
|
static DECLARE_FSTYPE_DEV(hfsplus_fs_type, "hfsplus", hfsplus_read_super);
|
| 447 |
|
|
|
| 448 |
|
|
static int __init init_hfsplus_fs(void)
|
| 449 |
|
|
{
|
| 450 |
|
|
return register_filesystem(&hfsplus_fs_type);
|
| 451 |
|
|
}
|
| 452 |
|
|
|
| 453 |
|
|
static void __exit exit_hfsplus_fs(void)
|
| 454 |
|
|
{
|
| 455 |
|
|
unregister_filesystem(&hfsplus_fs_type);
|
| 456 |
|
|
}
|
| 457 |
|
|
|
| 458 |
|
|
EXPORT_NO_SYMBOLS;
|
| 459 |
|
|
|
| 460 |
|
|
#else
|
| 461 |
|
|
|
| 462 |
|
|
static kmem_cache_t * hfsplus_inode_cachep;
|
| 463 |
|
|
|
| 464 |
|
|
static void init_once(void *p, kmem_cache_t *cachep, unsigned long flags)
|
| 465 |
|
|
{
|
| 466 |
|
|
struct hfsplus_inode_info *i = (struct hfsplus_inode_info *)p;
|
| 467 |
|
|
|
| 468 |
|
|
if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == SLAB_CTOR_CONSTRUCTOR) {
|
| 469 |
|
|
inode_init_once(&i->vfs_inode);
|
| 470 |
|
|
}
|
| 471 |
|
|
}
|
| 472 |
|
|
|
| 473 |
|
|
static struct inode *hfsplus_alloc_inode(struct super_block *sb)
|
| 474 |
|
|
{
|
| 475 |
|
|
struct hfsplus_inode_info *i;
|
| 476 |
|
|
i = (struct hfsplus_inode_info *)kmem_cache_alloc(hfsplus_inode_cachep, SLAB_KERNEL);
|
| 477 |
|
|
return i ? &i->vfs_inode : NULL;
|
| 478 |
|
|
}
|
| 479 |
|
|
|
| 480 |
|
|
static void hfsplus_destroy_inode(struct inode *inode)
|
| 481 |
|
|
{
|
| 482 |
|
|
kmem_cache_free(hfsplus_inode_cachep, &HFSPLUS_I(inode));
|
| 483 |
|
|
}
|
| 484 |
|
|
|
| 485 |
|
|
static struct super_block *hfsplus_get_sb(struct file_system_type *fs_type,
|
| 486 |
|
|
int flags, char *dev_name, void *data)
|
| 487 |
|
|
{
|
| 488 |
|
|
return get_sb_bdev(fs_type, flags, dev_name, data, hfsplus_fill_super);
|
| 489 |
|
|
}
|
| 490 |
|
|
|
| 491 |
|
|
static struct file_system_type hfsplus_fs_type = {
|
| 492 |
|
|
.owner = THIS_MODULE,
|
| 493 |
|
|
.name = "hfsplus",
|
| 494 |
|
|
.get_sb = hfsplus_get_sb,
|
| 495 |
|
|
.kill_sb = kill_block_super,
|
| 496 |
|
|
.fs_flags = FS_REQUIRES_DEV,
|
| 497 |
|
|
};
|
| 498 |
|
|
|
| 499 |
|
|
static int __init init_hfsplus_fs(void)
|
| 500 |
|
|
{
|
| 501 |
|
|
int err;
|
| 502 |
|
|
|
| 503 |
|
|
hfsplus_inode_cachep = kmem_cache_create("hfsplus_inode_cache",
|
| 504 |
|
|
sizeof(struct hfsplus_inode_info), 0, SLAB_HWCACHE_ALIGN,
|
| 505 |
|
|
init_once, NULL);
|
| 506 |
|
|
if (!hfsplus_inode_cachep)
|
| 507 |
|
|
return -ENOMEM;
|
| 508 |
|
|
err = register_filesystem(&hfsplus_fs_type);
|
| 509 |
|
|
if (err)
|
| 510 |
|
|
kmem_cache_destroy(hfsplus_inode_cachep);
|
| 511 |
|
|
return err;
|
| 512 |
|
|
}
|
| 513 |
|
|
|
| 514 |
|
|
static void __exit exit_hfsplus_fs(void)
|
| 515 |
|
|
{
|
| 516 |
|
|
unregister_filesystem(&hfsplus_fs_type);
|
| 517 |
|
|
if (kmem_cache_destroy(hfsplus_inode_cachep))
|
| 518 |
|
|
printk(KERN_INFO "hfsplus_inode_cache: not all structures were freed\n");
|
| 519 |
|
|
}
|
| 520 |
|
|
#endif
|
| 521 |
|
|
|
| 522 |
|
|
module_init(init_hfsplus_fs)
|
| 523 |
|
|
module_exit(exit_hfsplus_fs)
|
