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Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/hfsplus 

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/hfsplus: (29 commits)
  hfsplus: fix getxattr return value
  hfsplus: remove the unused hfsplus_kmap/hfsplus_kunmap helpers
  hfsplus: create correct initial catalog entries for device files
  hfsplus: remove superflous rootflags field in hfsplus_inode_info
  hfsplus: fix link corruption
  hfsplus: validate btree flags
  hfsplus: handle more on-disk corruptions without oopsing
  hfsplus: hfs_bnode_find() can fail, resulting in hfs_bnode_split() breakage
  hfsplus: fix oops on mount with corrupted btree extent records
  hfsplus: fix rename over directories
  hfsplus: convert tree_lock to mutex
  hfsplus: add missing extent locking in hfsplus_write_inode
  hfsplus: protect readdir against removals from open_dir_list
  hfsplus: use atomic bitops for the superblock flags
  hfsplus: add per-superblock lock for volume header updates
  hfsplus: remove the rsrc_inodes list
  hfsplus: do not cache and write next_alloc
  hfsplus: fix error handling in hfsplus_symlink
  hfsplus: merge mknod/mkdir/creat
  hfsplus: clean up hfsplus_write_inode
  ...
This commit is contained in:
Linus Torvalds 2010-10-21 12:33:45 -07:00
parent f6f94e2ab1 46bf36ecec
commit 9f1ad09493
16 changed files with 777 additions and 661 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
fs/hfsplus/bfind.c
View File

@ -23,7 +23,7 @@ int hfs_find_init(struct hfs_btree *tree, struct hfs_find_data *fd)
fd->search_key = ptr;
fd->key = ptr + tree->max_key_len + 2;
dprint(DBG_BNODE_REFS, "find_init: %d (%p)\n", tree->cnid, __builtin_return_address(0));
down(&tree->tree_lock);
mutex_lock(&tree->tree_lock);
return 0;
}
@ -32,7 +32,7 @@ void hfs_find_exit(struct hfs_find_data *fd)
hfs_bnode_put(fd->bnode);
kfree(fd->search_key);
dprint(DBG_BNODE_REFS, "find_exit: %d (%p)\n", fd->tree->cnid, __builtin_return_address(0));
up(&fd->tree->tree_lock);
mutex_unlock(&fd->tree->tree_lock);
fd->tree = NULL;
}
@ -52,6 +52,10 @@ int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd)
rec = (e + b) / 2;
len = hfs_brec_lenoff(bnode, rec, &off);
keylen = hfs_brec_keylen(bnode, rec);
if (keylen == 0) {
res = -EINVAL;
goto fail;
}
hfs_bnode_read(bnode, fd->key, off, keylen);
cmpval = bnode->tree->keycmp(fd->key, fd->search_key);
if (!cmpval) {
@ -67,6 +71,10 @@ int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd)
if (rec != e && e >= 0) {
len = hfs_brec_lenoff(bnode, e, &off);
keylen = hfs_brec_keylen(bnode, e);
if (keylen == 0) {
res = -EINVAL;
goto fail;
}
hfs_bnode_read(bnode, fd->key, off, keylen);
}
done:
@ -75,6 +83,7 @@ done:
fd->keylength = keylen;
fd->entryoffset = off + keylen;
fd->entrylength = len - keylen;
fail:
return res;
}
@ -198,6 +207,10 @@ int hfs_brec_goto(struct hfs_find_data *fd, int cnt)
len = hfs_brec_lenoff(bnode, fd->record, &off);
keylen = hfs_brec_keylen(bnode, fd->record);
if (keylen == 0) {
res = -EINVAL;
goto out;
}
fd->keyoffset = off;
fd->keylength = keylen;
fd->entryoffset = off + keylen;

20
fs/hfsplus/bitmap.c
View File

@ -17,6 +17,7 @@
int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset, u32 *max)
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct page *page;
struct address_space *mapping;
__be32 *pptr, *curr, *end;
@ -29,8 +30,8 @@ int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset, u32 *ma
return size;
dprint(DBG_BITMAP, "block_allocate: %u,%u,%u\n", size, offset, len);
mutex_lock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
mapping = HFSPLUS_SB(sb).alloc_file->i_mapping;
mutex_lock(&sbi->alloc_mutex);
mapping = sbi->alloc_file->i_mapping;
page = read_mapping_page(mapping, offset / PAGE_CACHE_BITS, NULL);
if (IS_ERR(page)) {
start = size;
@ -150,16 +151,17 @@ done:
set_page_dirty(page);
kunmap(page);
*max = offset + (curr - pptr) * 32 + i - start;
HFSPLUS_SB(sb).free_blocks -= *max;
sbi->free_blocks -= *max;
sb->s_dirt = 1;
dprint(DBG_BITMAP, "-> %u,%u\n", start, *max);
out:
mutex_unlock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
mutex_unlock(&sbi->alloc_mutex);
return start;
}
int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count)
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct page *page;
struct address_space *mapping;
__be32 *pptr, *curr, *end;
@ -172,11 +174,11 @@ int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count)
dprint(DBG_BITMAP, "block_free: %u,%u\n", offset, count);
/* are all of the bits in range? */
if ((offset + count) > HFSPLUS_SB(sb).total_blocks)
if ((offset + count) > sbi->total_blocks)
return -2;
mutex_lock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
mapping = HFSPLUS_SB(sb).alloc_file->i_mapping;
mutex_lock(&sbi->alloc_mutex);
mapping = sbi->alloc_file->i_mapping;
pnr = offset / PAGE_CACHE_BITS;
page = read_mapping_page(mapping, pnr, NULL);
pptr = kmap(page);
@ -224,9 +226,9 @@ done:
out:
set_page_dirty(page);
kunmap(page);
HFSPLUS_SB(sb).free_blocks += len;
sbi->free_blocks += len;
sb->s_dirt = 1;
mutex_unlock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
mutex_unlock(&sbi->alloc_mutex);
return 0;
}

29
fs/hfsplus/brec.c
View File

@ -42,10 +42,13 @@ u16 hfs_brec_keylen(struct hfs_bnode *node, u16 rec)
recoff = hfs_bnode_read_u16(node, node->tree->node_size - (rec + 1) * 2);
if (!recoff)
return 0;
if (node->tree->attributes & HFS_TREE_BIGKEYS)
retval = hfs_bnode_read_u16(node, recoff) + 2;
else
retval = (hfs_bnode_read_u8(node, recoff) | 1) + 1;
retval = hfs_bnode_read_u16(node, recoff) + 2;
if (retval > node->tree->max_key_len + 2) {
printk(KERN_ERR "hfs: keylen %d too large\n",
retval);
retval = 0;
}
}
return retval;
}
@ -216,7 +219,7 @@ skip:
static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd)
{
struct hfs_btree *tree;
struct hfs_bnode *node, *new_node;
struct hfs_bnode *node, *new_node, *next_node;
struct hfs_bnode_desc node_desc;
int num_recs, new_rec_off, new_off, old_rec_off;
int data_start, data_end, size;
@ -235,6 +238,17 @@ static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd)
new_node->type = node->type;
new_node->height = node->height;
if (node->next)
next_node = hfs_bnode_find(tree, node->next);
else
next_node = NULL;
if (IS_ERR(next_node)) {
hfs_bnode_put(node);
hfs_bnode_put(new_node);
return next_node;
}
size = tree->node_size / 2 - node->num_recs * 2 - 14;
old_rec_off = tree->node_size - 4;
num_recs = 1;
@ -248,6 +262,8 @@ static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd)
/* panic? */
hfs_bnode_put(node);
hfs_bnode_put(new_node);
if (next_node)
hfs_bnode_put(next_node);
return ERR_PTR(-ENOSPC);
}
@ -302,8 +318,7 @@ static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd)
hfs_bnode_write(node, &node_desc, 0, sizeof(node_desc));
/* update next bnode header */
if (new_node->next) {
struct hfs_bnode *next_node = hfs_bnode_find(tree, new_node->next);
if (next_node) {
next_node->prev = new_node->this;
hfs_bnode_read(next_node, &node_desc, 0, sizeof(node_desc));
node_desc.prev = cpu_to_be32(next_node->prev);

67
fs/hfsplus/btree.c
View File

@ -30,7 +30,7 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
if (!tree)
return NULL;
init_MUTEX(&tree->tree_lock);
mutex_init(&tree->tree_lock);
spin_lock_init(&tree->hash_lock);
tree->sb = sb;
tree->cnid = id;
@ -39,10 +39,16 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
goto free_tree;
tree->inode = inode;
if (!HFSPLUS_I(tree->inode)->first_blocks) {
printk(KERN_ERR
"hfs: invalid btree extent records (0 size).\n");
goto free_inode;
}
mapping = tree->inode->i_mapping;
page = read_mapping_page(mapping, 0, NULL);
if (IS_ERR(page))
goto free_tree;
goto free_inode;
/* Load the header */
head = (struct hfs_btree_header_rec *)(kmap(page) + sizeof(struct hfs_bnode_desc));
@ -57,27 +63,56 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
tree->max_key_len = be16_to_cpu(head->max_key_len);
tree->depth = be16_to_cpu(head->depth);
/* Set the correct compare function */
if (id == HFSPLUS_EXT_CNID) {
/* Verify the tree and set the correct compare function */
switch (id) {
case HFSPLUS_EXT_CNID:
if (tree->max_key_len != HFSPLUS_EXT_KEYLEN - sizeof(u16)) {
printk(KERN_ERR "hfs: invalid extent max_key_len %d\n",
tree->max_key_len);
goto fail_page;
}
if (tree->attributes & HFS_TREE_VARIDXKEYS) {
printk(KERN_ERR "hfs: invalid extent btree flag\n");
goto fail_page;
}
tree->keycmp = hfsplus_ext_cmp_key;
} else if (id == HFSPLUS_CAT_CNID) {
if ((HFSPLUS_SB(sb).flags & HFSPLUS_SB_HFSX) &&
break;
case HFSPLUS_CAT_CNID:
if (tree->max_key_len != HFSPLUS_CAT_KEYLEN - sizeof(u16)) {
printk(KERN_ERR "hfs: invalid catalog max_key_len %d\n",
tree->max_key_len);
goto fail_page;
}
if (!(tree->attributes & HFS_TREE_VARIDXKEYS)) {
printk(KERN_ERR "hfs: invalid catalog btree flag\n");
goto fail_page;
}
if (test_bit(HFSPLUS_SB_HFSX, &HFSPLUS_SB(sb)->flags) &&
(head->key_type == HFSPLUS_KEY_BINARY))
tree->keycmp = hfsplus_cat_bin_cmp_key;
else {
tree->keycmp = hfsplus_cat_case_cmp_key;
HFSPLUS_SB(sb).flags |= HFSPLUS_SB_CASEFOLD;
set_bit(HFSPLUS_SB_CASEFOLD, &HFSPLUS_SB(sb)->flags);
}
} else {
break;
default:
printk(KERN_ERR "hfs: unknown B*Tree requested\n");
goto fail_page;
}
if (!(tree->attributes & HFS_TREE_BIGKEYS)) {
printk(KERN_ERR "hfs: invalid btree flag\n");
goto fail_page;
}
size = tree->node_size;
if (!is_power_of_2(size))
goto fail_page;
if (!tree->node_count)
goto fail_page;
tree->node_size_shift = ffs(size) - 1;
tree->pages_per_bnode = (tree->node_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
@ -87,10 +122,11 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
return tree;
fail_page:
tree->inode->i_mapping->a_ops = &hfsplus_aops;
page_cache_release(page);
free_tree:
free_inode:
tree->inode->i_mapping->a_ops = &hfsplus_aops;
iput(tree->inode);
free_tree:
kfree(tree);
return NULL;
}
@ -192,17 +228,18 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree)
while (!tree->free_nodes) {
struct inode *inode = tree->inode;
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
u32 count;
int res;
res = hfsplus_file_extend(inode);
if (res)
return ERR_PTR(res);
HFSPLUS_I(inode).phys_size = inode->i_size =
(loff_t)HFSPLUS_I(inode).alloc_blocks <<
HFSPLUS_SB(tree->sb).alloc_blksz_shift;
HFSPLUS_I(inode).fs_blocks = HFSPLUS_I(inode).alloc_blocks <<
HFSPLUS_SB(tree->sb).fs_shift;
hip->phys_size = inode->i_size =
(loff_t)hip->alloc_blocks <<
HFSPLUS_SB(tree->sb)->alloc_blksz_shift;
hip->fs_blocks =
hip->alloc_blocks << HFSPLUS_SB(tree->sb)->fs_shift;
inode_set_bytes(inode, inode->i_size);
count = inode->i_size >> tree->node_size_shift;
tree->free_nodes = count - tree->node_count;

50
fs/hfsplus/catalog.c
View File

@ -67,7 +67,7 @@ static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent,
key->key_len = cpu_to_be16(6 + ustrlen);
}
static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms)
void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms)
{
if (inode->i_flags & S_IMMUTABLE)
perms->rootflags |= HFSPLUS_FLG_IMMUTABLE;
@ -77,15 +77,24 @@ static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms)
perms->rootflags |= HFSPLUS_FLG_APPEND;
else
perms->rootflags &= ~HFSPLUS_FLG_APPEND;
HFSPLUS_I(inode).rootflags = perms->rootflags;
HFSPLUS_I(inode).userflags = perms->userflags;
perms->userflags = HFSPLUS_I(inode)->userflags;
perms->mode = cpu_to_be16(inode->i_mode);
perms->owner = cpu_to_be32(inode->i_uid);
perms->group = cpu_to_be32(inode->i_gid);
if (S_ISREG(inode->i_mode))
perms->dev = cpu_to_be32(inode->i_nlink);
else if (S_ISBLK(inode->i_mode) || S_ISCHR(inode->i_mode))
perms->dev = cpu_to_be32(inode->i_rdev);
else
perms->dev = 0;
}
static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, u32 cnid, struct inode *inode)
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
if (S_ISDIR(inode->i_mode)) {
struct hfsplus_cat_folder *folder;
@ -93,13 +102,13 @@ static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, u32 cnid, struct i
memset(folder, 0, sizeof(*folder));
folder->type = cpu_to_be16(HFSPLUS_FOLDER);
folder->id = cpu_to_be32(inode->i_ino);
HFSPLUS_I(inode).create_date =
HFSPLUS_I(inode)->create_date =
folder->create_date =
folder->content_mod_date =
folder->attribute_mod_date =
folder->access_date = hfsp_now2mt();
hfsplus_set_perms(inode, &folder->permissions);
if (inode == HFSPLUS_SB(inode->i_sb).hidden_dir)
hfsplus_cat_set_perms(inode, &folder->permissions);
if (inode == sbi->hidden_dir)
/* invisible and namelocked */
folder->user_info.frFlags = cpu_to_be16(0x5000);
return sizeof(*folder);
@ -111,19 +120,19 @@ static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, u32 cnid, struct i
file->type = cpu_to_be16(HFSPLUS_FILE);
file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS);
file->id = cpu_to_be32(cnid);
HFSPLUS_I(inode).create_date =
HFSPLUS_I(inode)->create_date =
file->create_date =
file->content_mod_date =
file->attribute_mod_date =
file->access_date = hfsp_now2mt();
if (cnid == inode->i_ino) {
hfsplus_set_perms(inode, &file->permissions);
hfsplus_cat_set_perms(inode, &file->permissions);
if (S_ISLNK(inode->i_mode)) {
file->user_info.fdType = cpu_to_be32(HFSP_SYMLINK_TYPE);
file->user_info.fdCreator = cpu_to_be32(HFSP_SYMLINK_CREATOR);
} else {
file->user_info.fdType = cpu_to_be32(HFSPLUS_SB(inode->i_sb).type);
file->user_info.fdCreator = cpu_to_be32(HFSPLUS_SB(inode->i_sb).creator);
file->user_info.fdType = cpu_to_be32(sbi->type);
file->user_info.fdCreator = cpu_to_be32(sbi->creator);
}
if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
@ -131,8 +140,8 @@ static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, u32 cnid, struct i
file->user_info.fdType = cpu_to_be32(HFSP_HARDLINK_TYPE);
file->user_info.fdCreator = cpu_to_be32(HFSP_HFSPLUS_CREATOR);
file->user_info.fdFlags = cpu_to_be16(0x100);
file->create_date = HFSPLUS_I(HFSPLUS_SB(inode->i_sb).hidden_dir).create_date;
file->permissions.dev = cpu_to_be32(HFSPLUS_I(inode).dev);
file->create_date = HFSPLUS_I(sbi->hidden_dir)->create_date;
file->permissions.dev = cpu_to_be32(HFSPLUS_I(inode)->linkid);
}
return sizeof(*file);
}
@ -180,15 +189,14 @@ int hfsplus_find_cat(struct super_block *sb, u32 cnid,
int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str, struct inode *inode)
{
struct super_block *sb = dir->i_sb;
struct hfs_find_data fd;
struct super_block *sb;
hfsplus_cat_entry entry;
int entry_size;
int err;
dprint(DBG_CAT_MOD, "create_cat: %s,%u(%d)\n", str->name, cnid, inode->i_nlink);
sb = dir->i_sb;
hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
entry_size = hfsplus_fill_cat_thread(sb, &entry, S_ISDIR(inode->i_mode) ?
@ -234,7 +242,7 @@ err2:
int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
{
struct super_block *sb;
struct super_block *sb = dir->i_sb;
struct hfs_find_data fd;
struct hfsplus_fork_raw fork;
struct list_head *pos;
@ -242,8 +250,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
u16 type;
dprint(DBG_CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
sb = dir->i_sb;
hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
if (!str) {
int len;
@ -279,7 +286,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC);
}
list_for_each(pos, &HFSPLUS_I(dir).open_dir_list) {
list_for_each(pos, &HFSPLUS_I(dir)->open_dir_list) {
struct hfsplus_readdir_data *rd =
list_entry(pos, struct hfsplus_readdir_data, list);
if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
@ -312,7 +319,7 @@ int hfsplus_rename_cat(u32 cnid,
struct inode *src_dir, struct qstr *src_name,
struct inode *dst_dir, struct qstr *dst_name)
{
struct super_block *sb;
struct super_block *sb = src_dir->i_sb;
struct hfs_find_data src_fd, dst_fd;
hfsplus_cat_entry entry;
int entry_size, type;
@ -320,8 +327,7 @@ int hfsplus_rename_cat(u32 cnid,
dprint(DBG_CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n", cnid, src_dir->i_ino, src_name->name,
dst_dir->i_ino, dst_name->name);
sb = src_dir->i_sb;
hfs_find_init(HFSPLUS_SB(sb).cat_tree, &src_fd);
hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &src_fd);
dst_fd = src_fd;
/* find the old dir entry and read the data */

201
fs/hfsplus/dir.c
View File

@ -39,7 +39,7 @@ static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
dentry->d_op = &hfsplus_dentry_operations;
dentry->d_fsdata = NULL;
hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, &dentry->d_name);
again:
err = hfs_brec_read(&fd, &entry, sizeof(entry));
@ -68,9 +68,9 @@ again:
cnid = be32_to_cpu(entry.file.id);
if (entry.file.user_info.fdType == cpu_to_be32(HFSP_HARDLINK_TYPE) &&
entry.file.user_info.fdCreator == cpu_to_be32(HFSP_HFSPLUS_CREATOR) &&
(entry.file.create_date == HFSPLUS_I(HFSPLUS_SB(sb).hidden_dir).create_date ||
entry.file.create_date == HFSPLUS_I(sb->s_root->d_inode).create_date) &&
HFSPLUS_SB(sb).hidden_dir) {
(entry.file.create_date == HFSPLUS_I(HFSPLUS_SB(sb)->hidden_dir)->create_date ||
entry.file.create_date == HFSPLUS_I(sb->s_root->d_inode)->create_date) &&
HFSPLUS_SB(sb)->hidden_dir) {
struct qstr str;
char name[32];
@ -86,7 +86,8 @@ again:
linkid = be32_to_cpu(entry.file.permissions.dev);
str.len = sprintf(name, "iNode%d", linkid);
str.name = name;
hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_SB(sb).hidden_dir->i_ino, &str);
hfsplus_cat_build_key(sb, fd.search_key,
HFSPLUS_SB(sb)->hidden_dir->i_ino, &str);
goto again;
}
} else if (!dentry->d_fsdata)
@ -101,7 +102,7 @@ again:
if (IS_ERR(inode))
return ERR_CAST(inode);
if (S_ISREG(inode->i_mode))
HFSPLUS_I(inode).dev = linkid;
HFSPLUS_I(inode)->linkid = linkid;
out:
d_add(dentry, inode);
return NULL;
@ -124,7 +125,7 @@ static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir)
if (filp->f_pos >= inode->i_size)
return 0;
hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
hfsplus_cat_build_key(sb, fd.search_key, inode->i_ino, NULL);
err = hfs_brec_find(&fd);
if (err)
@ -180,8 +181,9 @@ static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir)
err = -EIO;
goto out;
}
if (HFSPLUS_SB(sb).hidden_dir &&
HFSPLUS_SB(sb).hidden_dir->i_ino == be32_to_cpu(entry.folder.id))
if (HFSPLUS_SB(sb)->hidden_dir &&
HFSPLUS_SB(sb)->hidden_dir->i_ino ==
be32_to_cpu(entry.folder.id))
goto next;
if (filldir(dirent, strbuf, len, filp->f_pos,
be32_to_cpu(entry.folder.id), DT_DIR))
@ -217,7 +219,7 @@ static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir)
}
filp->private_data = rd;
rd->file = filp;
list_add(&rd->list, &HFSPLUS_I(inode).open_dir_list);
list_add(&rd->list, &HFSPLUS_I(inode)->open_dir_list);
}
memcpy(&rd->key, fd.key, sizeof(struct hfsplus_cat_key));
out:
@ -229,38 +231,18 @@ static int hfsplus_dir_release(struct inode *inode, struct file *file)
{
struct hfsplus_readdir_data *rd = file->private_data;
if (rd) {
mutex_lock(&inode->i_mutex);
list_del(&rd->list);
mutex_unlock(&inode->i_mutex);
kfree(rd);
}
return 0;
}
static int hfsplus_create(struct inode *dir, struct dentry *dentry, int mode,
struct nameidata *nd)
{
struct inode *inode;
int res;
inode = hfsplus_new_inode(dir->i_sb, mode);
if (!inode)
return -ENOSPC;
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
if (res) {
inode->i_nlink = 0;
hfsplus_delete_inode(inode);
iput(inode);
return res;
}
hfsplus_instantiate(dentry, inode, inode->i_ino);
mark_inode_dirty(inode);
return 0;
}
static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir,
struct dentry *dst_dentry)
{
struct super_block *sb = dst_dir->i_sb;
struct hfsplus_sb_info *sbi = HFSPLUS_SB(dst_dir->i_sb);
struct inode *inode = src_dentry->d_inode;
struct inode *src_dir = src_dentry->d_parent->d_inode;
struct qstr str;
@ -270,7 +252,10 @@ static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir,
if (HFSPLUS_IS_RSRC(inode))
return -EPERM;
if (!S_ISREG(inode->i_mode))
return -EPERM;
mutex_lock(&sbi->vh_mutex);
if (inode->i_ino == (u32)(unsigned long)src_dentry->d_fsdata) {
for (;;) {
get_random_bytes(&id, sizeof(cnid));
@ -279,40 +264,41 @@ static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir,
str.len = sprintf(name, "iNode%d", id);
res = hfsplus_rename_cat(inode->i_ino,
src_dir, &src_dentry->d_name,
HFSPLUS_SB(sb).hidden_dir, &str);
sbi->hidden_dir, &str);
if (!res)
break;
if (res != -EEXIST)
return res;
goto out;
}
HFSPLUS_I(inode).dev = id;
cnid = HFSPLUS_SB(sb).next_cnid++;
HFSPLUS_I(inode)->linkid = id;
cnid = sbi->next_cnid++;
src_dentry->d_fsdata = (void *)(unsigned long)cnid;
res = hfsplus_create_cat(cnid, src_dir, &src_dentry->d_name, inode);
if (res)
/* panic? */
return res;
HFSPLUS_SB(sb).file_count++;
goto out;
sbi->file_count++;
}
cnid = HFSPLUS_SB(sb).next_cnid++;
cnid = sbi->next_cnid++;
res = hfsplus_create_cat(cnid, dst_dir, &dst_dentry->d_name, inode);
if (res)
return res;
goto out;
inc_nlink(inode);
hfsplus_instantiate(dst_dentry, inode, cnid);
atomic_inc(&inode->i_count);
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
HFSPLUS_SB(sb).file_count++;
sb->s_dirt = 1;
return 0;
sbi->file_count++;
dst_dir->i_sb->s_dirt = 1;
out:
mutex_unlock(&sbi->vh_mutex);
return res;
}
static int hfsplus_unlink(struct inode *dir, struct dentry *dentry)
{
struct super_block *sb = dir->i_sb;
struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
struct inode *inode = dentry->d_inode;
struct qstr str;
char name[32];
@ -322,21 +308,22 @@ static int hfsplus_unlink(struct inode *dir, struct dentry *dentry)
if (HFSPLUS_IS_RSRC(inode))
return -EPERM;
mutex_lock(&sbi->vh_mutex);
cnid = (u32)(unsigned long)dentry->d_fsdata;
if (inode->i_ino == cnid &&
atomic_read(&HFSPLUS_I(inode).opencnt)) {
atomic_read(&HFSPLUS_I(inode)->opencnt)) {
str.name = name;
str.len = sprintf(name, "temp%lu", inode->i_ino);
res = hfsplus_rename_cat(inode->i_ino,
dir, &dentry->d_name,
HFSPLUS_SB(sb).hidden_dir, &str);
sbi->hidden_dir, &str);
if (!res)
inode->i_flags |= S_DEAD;
return res;
goto out;
}
res = hfsplus_delete_cat(cnid, dir, &dentry->d_name);
if (res)
return res;
goto out;
if (inode->i_nlink > 0)
drop_nlink(inode);
@ -344,10 +331,10 @@ static int hfsplus_unlink(struct inode *dir, struct dentry *dentry)
clear_nlink(inode);
if (!inode->i_nlink) {
if (inode->i_ino != cnid) {
HFSPLUS_SB(sb).file_count--;
if (!atomic_read(&HFSPLUS_I(inode).opencnt)) {
sbi->file_count--;
if (!atomic_read(&HFSPLUS_I(inode)->opencnt)) {
res = hfsplus_delete_cat(inode->i_ino,
HFSPLUS_SB(sb).hidden_dir,
sbi->hidden_dir,
NULL);
if (!res)
hfsplus_delete_inode(inode);
@ -356,107 +343,108 @@ static int hfsplus_unlink(struct inode *dir, struct dentry *dentry)
} else
hfsplus_delete_inode(inode);
} else
HFSPLUS_SB(sb).file_count--;
sbi->file_count--;
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
out:
mutex_unlock(&sbi->vh_mutex);
return res;
}
static int hfsplus_mkdir(struct inode *dir, struct dentry *dentry, int mode)
{
struct inode *inode;
int res;
inode = hfsplus_new_inode(dir->i_sb, S_IFDIR | mode);
if (!inode)
return -ENOSPC;
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
if (res) {
inode->i_nlink = 0;
hfsplus_delete_inode(inode);
iput(inode);
return res;
}
hfsplus_instantiate(dentry, inode, inode->i_ino);
mark_inode_dirty(inode);
return 0;
}
static int hfsplus_rmdir(struct inode *dir, struct dentry *dentry)
{
struct inode *inode;
struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
struct inode *inode = dentry->d_inode;
int res;
inode = dentry->d_inode;
if (inode->i_size != 2)
return -ENOTEMPTY;
mutex_lock(&sbi->vh_mutex);
res = hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name);
if (res)
return res;
goto out;
clear_nlink(inode);
inode->i_ctime = CURRENT_TIME_SEC;
hfsplus_delete_inode(inode);
mark_inode_dirty(inode);
return 0;
out:
mutex_unlock(&sbi->vh_mutex);
return res;
}
static int hfsplus_symlink(struct inode *dir, struct dentry *dentry,
const char *symname)
{
struct super_block *sb;
struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
struct inode *inode;
int res;
int res = -ENOSPC;
sb = dir->i_sb;
inode = hfsplus_new_inode(sb, S_IFLNK | S_IRWXUGO);
mutex_lock(&sbi->vh_mutex);
inode = hfsplus_new_inode(dir->i_sb, S_IFLNK | S_IRWXUGO);
if (!inode)
return -ENOSPC;
goto out;
res = page_symlink(inode, symname, strlen(symname) + 1);
if (res) {
inode->i_nlink = 0;
hfsplus_delete_inode(inode);
iput(inode);
return res;
}
if (res)
goto out_err;
mark_inode_dirty(inode);
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
if (res)
goto out_err;
if (!res) {
hfsplus_instantiate(dentry, inode, inode->i_ino);
mark_inode_dirty(inode);
}
hfsplus_instantiate(dentry, inode, inode->i_ino);
mark_inode_dirty(inode);
goto out;
out_err:
inode->i_nlink = 0;
hfsplus_delete_inode(inode);
iput(inode);
out:
mutex_unlock(&sbi->vh_mutex);
return res;
}
static int hfsplus_mknod(struct inode *dir, struct dentry *dentry,
int mode, dev_t rdev)
{
struct super_block *sb;
struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
struct inode *inode;
int res;
int res = -ENOSPC;
sb = dir->i_sb;
inode = hfsplus_new_inode(sb, mode);
mutex_lock(&sbi->vh_mutex);
inode = hfsplus_new_inode(dir->i_sb, mode);
if (!inode)
return -ENOSPC;
goto out;
if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode))
init_special_inode(inode, mode, rdev);
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
if (res) {
inode->i_nlink = 0;
hfsplus_delete_inode(inode);
iput(inode);
return res;
goto out;
}
init_special_inode(inode, mode, rdev);
hfsplus_instantiate(dentry, inode, inode->i_ino);
mark_inode_dirty(inode);
out:
mutex_unlock(&sbi->vh_mutex);
return res;
}
return 0;
static int hfsplus_create(struct inode *dir, struct dentry *dentry, int mode,
struct nameidata *nd)
{
return hfsplus_mknod(dir, dentry, mode, 0);
}
static int hfsplus_mkdir(struct inode *dir, struct dentry *dentry, int mode)
{
return hfsplus_mknod(dir, dentry, mode | S_IFDIR, 0);
}
static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry,
@ -466,7 +454,10 @@ static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry,
/* Unlink destination if it already exists */
if (new_dentry->d_inode) {
res = hfsplus_unlink(new_dir, new_dentry);
if (S_ISDIR(new_dentry->d_inode->i_mode))
res = hfsplus_rmdir(new_dir, new_dentry);
else
res = hfsplus_unlink(new_dir, new_dentry);
if (res)
return res;
}

231
fs/hfsplus/extents.c
View File

@ -85,33 +85,47 @@ static u32 hfsplus_ext_lastblock(struct hfsplus_extent *ext)
static void __hfsplus_ext_write_extent(struct inode *inode, struct hfs_find_data *fd)
{
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
int res;
hfsplus_ext_build_key(fd->search_key, inode->i_ino, HFSPLUS_I(inode).cached_start,
HFSPLUS_IS_RSRC(inode) ? HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA);
WARN_ON(!mutex_is_locked(&hip->extents_lock));
hfsplus_ext_build_key(fd->search_key, inode->i_ino, hip->cached_start,
HFSPLUS_IS_RSRC(inode) ?
HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA);
res = hfs_brec_find(fd);
if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_NEW) {
if (hip->flags & HFSPLUS_FLG_EXT_NEW) {
if (res != -ENOENT)
return;
hfs_brec_insert(fd, HFSPLUS_I(inode).cached_extents, sizeof(hfsplus_extent_rec));
HFSPLUS_I(inode).flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
hfs_brec_insert(fd, hip->cached_extents,
sizeof(hfsplus_extent_rec));
hip->flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
} else {
if (res)
return;
hfs_bnode_write(fd->bnode, HFSPLUS_I(inode).cached_extents, fd->entryoffset, fd->entrylength);
HFSPLUS_I(inode).flags &= ~HFSPLUS_FLG_EXT_DIRTY;
hfs_bnode_write(fd->bnode, hip->cached_extents,
fd->entryoffset, fd->entrylength);
hip->flags &= ~HFSPLUS_FLG_EXT_DIRTY;
}
}
static void hfsplus_ext_write_extent_locked(struct inode *inode)
{
if (HFSPLUS_I(inode)->flags & HFSPLUS_FLG_EXT_DIRTY) {
struct hfs_find_data fd;
hfs_find_init(HFSPLUS_SB(inode->i_sb)->ext_tree, &fd);
__hfsplus_ext_write_extent(inode, &fd);
hfs_find_exit(&fd);
}
}
void hfsplus_ext_write_extent(struct inode *inode)
{
if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_DIRTY) {
struct hfs_find_data fd;
hfs_find_init(HFSPLUS_SB(inode->i_sb).ext_tree, &fd);
__hfsplus_ext_write_extent(inode, &fd);
hfs_find_exit(&fd);
}
mutex_lock(&HFSPLUS_I(inode)->extents_lock);
hfsplus_ext_write_extent_locked(inode);
mutex_unlock(&HFSPLUS_I(inode)->extents_lock);
}
static inline int __hfsplus_ext_read_extent(struct hfs_find_data *fd,
@ -136,33 +150,39 @@ static inline int __hfsplus_ext_read_extent(struct hfs_find_data *fd,
static inline int __hfsplus_ext_cache_extent(struct hfs_find_data *fd, struct inode *inode, u32 block)
{
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
int res;
if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_DIRTY)
WARN_ON(!mutex_is_locked(&hip->extents_lock));
if (hip->flags & HFSPLUS_FLG_EXT_DIRTY)
__hfsplus_ext_write_extent(inode, fd);
res = __hfsplus_ext_read_extent(fd, HFSPLUS_I(inode).cached_extents, inode->i_ino,
block, HFSPLUS_IS_RSRC(inode) ? HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA);
res = __hfsplus_ext_read_extent(fd, hip->cached_extents, inode->i_ino,
block, HFSPLUS_IS_RSRC(inode) ?
HFSPLUS_TYPE_RSRC :
HFSPLUS_TYPE_DATA);
if (!res) {
HFSPLUS_I(inode).cached_start = be32_to_cpu(fd->key->ext.start_block);
HFSPLUS_I(inode).cached_blocks = hfsplus_ext_block_count(HFSPLUS_I(inode).cached_extents);
hip->cached_start = be32_to_cpu(fd->key->ext.start_block);
hip->cached_blocks = hfsplus_ext_block_count(hip->cached_extents);
} else {
HFSPLUS_I(inode).cached_start = HFSPLUS_I(inode).cached_blocks = 0;
HFSPLUS_I(inode).flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
hip->cached_start = hip->cached_blocks = 0;
hip->flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
}
return res;
}
static int hfsplus_ext_read_extent(struct inode *inode, u32 block)
{
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
struct hfs_find_data fd;
int res;
if (block >= HFSPLUS_I(inode).cached_start &&
block < HFSPLUS_I(inode).cached_start + HFSPLUS_I(inode).cached_blocks)
if (block >= hip->cached_start &&
block < hip->cached_start + hip->cached_blocks)
return 0;
hfs_find_init(HFSPLUS_SB(inode->i_sb).ext_tree, &fd);
hfs_find_init(HFSPLUS_SB(inode->i_sb)->ext_tree, &fd);
res = __hfsplus_ext_cache_extent(&fd, inode, block);
hfs_find_exit(&fd);
return res;
@ -172,21 +192,21 @@ static int hfsplus_ext_read_extent(struct inode *inode, u32 block)
int hfsplus_get_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
struct super_block *sb;
struct super_block *sb = inode->i_sb;
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
int res = -EIO;
u32 ablock, dblock, mask;
int shift;
sb = inode->i_sb;
/* Convert inode block to disk allocation block */
shift = HFSPLUS_SB(sb).alloc_blksz_shift - sb->s_blocksize_bits;
ablock = iblock >> HFSPLUS_SB(sb).fs_shift;
shift = sbi->alloc_blksz_shift - sb->s_blocksize_bits;
ablock = iblock >> sbi->fs_shift;
if (iblock >= HFSPLUS_I(inode).fs_blocks) {
if (iblock > HFSPLUS_I(inode).fs_blocks || !create)
if (iblock >= hip->fs_blocks) {
if (iblock > hip->fs_blocks || !create)
return -EIO;
if (ablock >= HFSPLUS_I(inode).alloc_blocks) {
if (ablock >= hip->alloc_blocks) {
res = hfsplus_file_extend(inode);
if (res)
return res;
@ -194,33 +214,33 @@ int hfsplus_get_block(struct inode *inode, sector_t iblock,
} else
create = 0;
if (ablock < HFSPLUS_I(inode).first_blocks) {
dblock = hfsplus_ext_find_block(HFSPLUS_I(inode).first_extents, ablock);
if (ablock < hip->first_blocks) {
dblock = hfsplus_ext_find_block(hip->first_extents, ablock);
goto done;
}
if (inode->i_ino == HFSPLUS_EXT_CNID)
return -EIO;
mutex_lock(&HFSPLUS_I(inode).extents_lock);
mutex_lock(&hip->extents_lock);
res = hfsplus_ext_read_extent(inode, ablock);
if (!res) {
dblock = hfsplus_ext_find_block(HFSPLUS_I(inode).cached_extents, ablock -
HFSPLUS_I(inode).cached_start);
dblock = hfsplus_ext_find_block(hip->cached_extents,
ablock - hip->cached_start);
} else {
mutex_unlock(&HFSPLUS_I(inode).extents_lock);
mutex_unlock(&hip->extents_lock);
return -EIO;
}
mutex_unlock(&HFSPLUS_I(inode).extents_lock);
mutex_unlock(&hip->extents_lock);
done:
dprint(DBG_EXTENT, "get_block(%lu): %llu - %u\n", inode->i_ino, (long long)iblock, dblock);
mask = (1 << HFSPLUS_SB(sb).fs_shift) - 1;
map_bh(bh_result, sb, (dblock << HFSPLUS_SB(sb).fs_shift) + HFSPLUS_SB(sb).blockoffset + (iblock & mask));
mask = (1 << sbi->fs_shift) - 1;
map_bh(bh_result, sb, (dblock << sbi->fs_shift) + sbi->blockoffset + (iblock & mask));
if (create) {
set_buffer_new(bh_result);
HFSPLUS_I(inode).phys_size += sb->s_blocksize;
HFSPLUS_I(inode).fs_blocks++;
hip->phys_size += sb->s_blocksize;
hip->fs_blocks++;
inode_add_bytes(inode, sb->s_blocksize);
mark_inode_dirty(inode);
}
@ -327,7 +347,7 @@ int hfsplus_free_fork(struct super_block *sb, u32 cnid, struct hfsplus_fork_raw
if (total_blocks == blocks)
return 0;
hfs_find_init(HFSPLUS_SB(sb).ext_tree, &fd);
hfs_find_init(HFSPLUS_SB(sb)->ext_tree, &fd);
do {
res = __hfsplus_ext_read_extent(&fd, ext_entry, cnid,
total_blocks, type);
@ -348,29 +368,33 @@ int hfsplus_free_fork(struct super_block *sb, u32 cnid, struct hfsplus_fork_raw
int hfsplus_file_extend(struct inode *inode)
{
struct super_block *sb = inode->i_sb;
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
u32 start, len, goal;
int res;
if (HFSPLUS_SB(sb).alloc_file->i_size * 8 < HFSPLUS_SB(sb).total_blocks - HFSPLUS_SB(sb).free_blocks + 8) {
if (sbi->alloc_file->i_size * 8 <
sbi->total_blocks - sbi->free_blocks + 8) {
// extend alloc file
printk(KERN_ERR "hfs: extend alloc file! (%Lu,%u,%u)\n", HFSPLUS_SB(sb).alloc_file->i_size * 8,
HFSPLUS_SB(sb).total_blocks, HFSPLUS_SB(sb).free_blocks);
printk(KERN_ERR "hfs: extend alloc file! (%Lu,%u,%u)\n",
sbi->alloc_file->i_size * 8,
sbi->total_blocks, sbi->free_blocks);
return -ENOSPC;
}
mutex_lock(&HFSPLUS_I(inode).extents_lock);
if (HFSPLUS_I(inode).alloc_blocks == HFSPLUS_I(inode).first_blocks)
goal = hfsplus_ext_lastblock(HFSPLUS_I(inode).first_extents);
mutex_lock(&hip->extents_lock);
if (hip->alloc_blocks == hip->first_blocks)
goal = hfsplus_ext_lastblock(hip->first_extents);
else {
res = hfsplus_ext_read_extent(inode, HFSPLUS_I(inode).alloc_blocks);
res = hfsplus_ext_read_extent(inode, hip->alloc_blocks);
if (res)
goto out;
goal = hfsplus_ext_lastblock(HFSPLUS_I(inode).cached_extents);
goal = hfsplus_ext_lastblock(hip->cached_extents);
}
len = HFSPLUS_I(inode).clump_blocks;
start = hfsplus_block_allocate(sb, HFSPLUS_SB(sb).total_blocks, goal, &len);
if (start >= HFSPLUS_SB(sb).total_blocks) {
len = hip->clump_blocks;
start = hfsplus_block_allocate(sb, sbi->total_blocks, goal, &len);
if (start >= sbi->total_blocks) {
start = hfsplus_block_allocate(sb, goal, 0, &len);
if (start >= goal) {
res = -ENOSPC;
@ -379,56 +403,56 @@ int hfsplus_file_extend(struct inode *inode)
}
dprint(DBG_EXTENT, "extend %lu: %u,%u\n", inode->i_ino, start, len);
if (HFSPLUS_I(inode).alloc_blocks <= HFSPLUS_I(inode).first_blocks) {
if (!HFSPLUS_I(inode).first_blocks) {
if (hip->alloc_blocks <= hip->first_blocks) {
if (!hip->first_blocks) {
dprint(DBG_EXTENT, "first extents\n");
/* no extents yet */
HFSPLUS_I(inode).first_extents[0].start_block = cpu_to_be32(start);
HFSPLUS_I(inode).first_extents[0].block_count = cpu_to_be32(len);
hip->first_extents[0].start_block = cpu_to_be32(start);
hip->first_extents[0].block_count = cpu_to_be32(len);
res = 0;
} else {
/* try to append to extents in inode */
res = hfsplus_add_extent(HFSPLUS_I(inode).first_extents,
HFSPLUS_I(inode).alloc_blocks,
res = hfsplus_add_extent(hip->first_extents,
hip->alloc_blocks,
start, len);
if (res == -ENOSPC)
goto insert_extent;
}
if (!res) {
hfsplus_dump_extent(HFSPLUS_I(inode).first_extents);
HFSPLUS_I(inode).first_blocks += len;
hfsplus_dump_extent(hip->first_extents);
hip->first_blocks += len;
}
} else {
res = hfsplus_add_extent(HFSPLUS_I(inode).cached_extents,
HFSPLUS_I(inode).alloc_blocks -
HFSPLUS_I(inode).cached_start,
res = hfsplus_add_extent(hip->cached_extents,
hip->alloc_blocks - hip->cached_start,
start, len);
if (!res) {
hfsplus_dump_extent(HFSPLUS_I(inode).cached_extents);
HFSPLUS_I(inode).flags |= HFSPLUS_FLG_EXT_DIRTY;
HFSPLUS_I(inode).cached_blocks += len;
hfsplus_dump_extent(hip->cached_extents);
hip->flags |= HFSPLUS_FLG_EXT_DIRTY;
hip->cached_blocks += len;
} else if (res == -ENOSPC)
goto insert_extent;
}
out:
mutex_unlock(&HFSPLUS_I(inode).extents_lock);
mutex_unlock(&hip->extents_lock);
if (!res) {
HFSPLUS_I(inode).alloc_blocks += len;
hip->alloc_blocks += len;
mark_inode_dirty(inode);
}
return res;
insert_extent:
dprint(DBG_EXTENT, "insert new extent\n");
hfsplus_ext_write_extent(inode);
hfsplus_ext_write_extent_locked(inode);
memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
HFSPLUS_I(inode).cached_extents[0].start_block = cpu_to_be32(start);
HFSPLUS_I(inode).cached_extents[0].block_count = cpu_to_be32(len);
hfsplus_dump_extent(HFSPLUS_I(inode).cached_extents);
HFSPLUS_I(inode).flags |= HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW;
HFSPLUS_I(inode).cached_start = HFSPLUS_I(inode).alloc_blocks;
HFSPLUS_I(inode).cached_blocks = len;
memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
hip->cached_extents[0].start_block = cpu_to_be32(start);
hip->cached_extents[0].block_count = cpu_to_be32(len);
hfsplus_dump_extent(hip->cached_extents);
hip->flags |= HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW;
hip->cached_start = hip->alloc_blocks;
hip->cached_blocks = len;
res = 0;
goto out;
@ -437,13 +461,15 @@ insert_extent:
void hfsplus_file_truncate(struct inode *inode)
{
struct super_block *sb = inode->i_sb;
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
struct hfs_find_data fd;
u32 alloc_cnt, blk_cnt, start;
int res;
dprint(DBG_INODE, "truncate: %lu, %Lu -> %Lu\n", inode->i_ino,
(long long)HFSPLUS_I(inode).phys_size, inode->i_size);
if (inode->i_size > HFSPLUS_I(inode).phys_size) {
dprint(DBG_INODE, "truncate: %lu, %Lu -> %Lu\n",
inode->i_ino, (long long)hip->phys_size, inode->i_size);
if (inode->i_size > hip->phys_size) {
struct address_space *mapping = inode->i_mapping;
struct page *page;
void *fsdata;
@ -460,47 +486,48 @@ void hfsplus_file_truncate(struct inode *inode)
return;
mark_inode_dirty(inode);
return;
} else if (inode->i_size == HFSPLUS_I(inode).phys_size)
} else if (inode->i_size == hip->phys_size)
return;
blk_cnt = (inode->i_size + HFSPLUS_SB(sb).alloc_blksz - 1) >> HFSPLUS_SB(sb).alloc_blksz_shift;
alloc_cnt = HFSPLUS_I(inode).alloc_blocks;
blk_cnt = (inode->i_size + HFSPLUS_SB(sb)->alloc_blksz - 1) >>
HFSPLUS_SB(sb)->alloc_blksz_shift;
alloc_cnt = hip->alloc_blocks;
if (blk_cnt == alloc_cnt)
goto out;
mutex_lock(&HFSPLUS_I(inode).extents_lock);
hfs_find_init(HFSPLUS_SB(sb).ext_tree, &fd);
mutex_lock(&hip->extents_lock);
hfs_find_init(HFSPLUS_SB(sb)->ext_tree, &fd);
while (1) {
if (alloc_cnt == HFSPLUS_I(inode).first_blocks) {
hfsplus_free_extents(sb, HFSPLUS_I(inode).first_extents,
if (alloc_cnt == hip->first_blocks) {
hfsplus_free_extents(sb, hip->first_extents,
alloc_cnt, alloc_cnt - blk_cnt);
hfsplus_dump_extent(HFSPLUS_I(inode).first_extents);
HFSPLUS_I(inode).first_blocks = blk_cnt;
hfsplus_dump_extent(hip->first_extents);
hip->first_blocks = blk_cnt;
break;
}
res = __hfsplus_ext_cache_extent(&fd, inode, alloc_cnt);
if (res)
break;
start = HFSPLUS_I(inode).cached_start;
hfsplus_free_extents(sb, HFSPLUS_I(inode).cached_extents,
start = hip->cached_start;
hfsplus_free_extents(sb, hip->cached_extents,
alloc_cnt - start, alloc_cnt - blk_cnt);
hfsplus_dump_extent(HFSPLUS_I(inode).cached_extents);
hfsplus_dump_extent(hip->cached_extents);
if (blk_cnt > start) {
HFSPLUS_I(inode).flags |= HFSPLUS_FLG_EXT_DIRTY;
hip->flags |= HFSPLUS_FLG_EXT_DIRTY;
break;
}
alloc_cnt = start;
HFSPLUS_I(inode).cached_start = HFSPLUS_I(inode).cached_blocks = 0;
HFSPLUS_I(inode).flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
hip->cached_start = hip->cached_blocks = 0;
hip->flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
hfs_brec_remove(&fd);
}
hfs_find_exit(&fd);
mutex_unlock(&HFSPLUS_I(inode).extents_lock);
mutex_unlock(&hip->extents_lock);
HFSPLUS_I(inode).alloc_blocks = blk_cnt;
hip->alloc_blocks = blk_cnt;
out:
HFSPLUS_I(inode).phys_size = inode->i_size;
HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits);
hip->phys_size = inode->i_size;
hip->fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
mark_inode_dirty(inode);
}

85
fs/hfsplus/hfsplus_fs.h
View File

@ -62,7 +62,7 @@ struct hfs_btree {
unsigned int depth;
//unsigned int map1_size, map_size;
struct semaphore tree_lock;
struct mutex tree_lock;
unsigned int pages_per_bnode;
spinlock_t hash_lock;
@ -121,16 +121,21 @@ struct hfsplus_sb_info {
u32 sect_count;
int fs_shift;
/* Stuff in host order from Vol Header */
/* immutable data from the volume header */
u32 alloc_blksz;
int alloc_blksz_shift;
u32 total_blocks;
u32 data_clump_blocks, rsrc_clump_blocks;
/* mutable data from the volume header, protected by alloc_mutex */
u32 free_blocks;
u32 next_alloc;
struct mutex alloc_mutex;
/* mutable data from the volume header, protected by vh_mutex */
u32 next_cnid;
u32 file_count;
u32 folder_count;
u32 data_clump_blocks, rsrc_clump_blocks;
struct mutex vh_mutex;
/* Config options */
u32 creator;
@ -143,40 +148,50 @@ struct hfsplus_sb_info {
int part, session;
unsigned long flags;
struct hlist_head rsrc_inodes;
};
#define HFSPLUS_SB_WRITEBACKUP 0x0001
#define HFSPLUS_SB_NODECOMPOSE 0x0002
#define HFSPLUS_SB_FORCE 0x0004
#define HFSPLUS_SB_HFSX 0x0008
#define HFSPLUS_SB_CASEFOLD 0x0010
#define HFSPLUS_SB_WRITEBACKUP 0
#define HFSPLUS_SB_NODECOMPOSE 1
#define HFSPLUS_SB_FORCE 2
#define HFSPLUS_SB_HFSX 3
#define HFSPLUS_SB_CASEFOLD 4
struct hfsplus_inode_info {
struct mutex extents_lock;
u32 clump_blocks, alloc_blocks;
sector_t fs_blocks;
/* Allocation extents from catalog record or volume header */
hfsplus_extent_rec first_extents;
u32 first_blocks;
hfsplus_extent_rec cached_extents;
u32 cached_start, cached_blocks;
atomic_t opencnt;
struct inode *rsrc_inode;
/*
* Extent allocation information, protected by extents_lock.
*/
u32 first_blocks;
u32 clump_blocks;
u32 alloc_blocks;
u32 cached_start;
u32 cached_blocks;
hfsplus_extent_rec first_extents;
hfsplus_extent_rec cached_extents;
unsigned long flags;
struct mutex extents_lock;
/*
* Immutable data.
*/
struct inode *rsrc_inode;
__be32 create_date;
/* Device number in hfsplus_permissions in catalog */
u32 dev;
/* BSD system and user file flags */
u8 rootflags;
u8 userflags;
/*
* Protected by sbi->vh_mutex.
*/
u32 linkid;
/*
* Protected by i_mutex.
*/
sector_t fs_blocks;
u8 userflags; /* BSD user file flags */
struct list_head open_dir_list;
loff_t phys_size;
struct inode vfs_inode;
};
@ -184,8 +199,8 @@ struct hfsplus_inode_info {
#define HFSPLUS_FLG_EXT_DIRTY 0x0002
#define HFSPLUS_FLG_EXT_NEW 0x0004
#define HFSPLUS_IS_DATA(inode) (!(HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC))
#define HFSPLUS_IS_RSRC(inode) (HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC)
#define HFSPLUS_IS_DATA(inode) (!(HFSPLUS_I(inode)->flags & HFSPLUS_FLG_RSRC))
#define HFSPLUS_IS_RSRC(inode) (HFSPLUS_I(inode)->flags & HFSPLUS_FLG_RSRC)
struct hfs_find_data {
/* filled by caller */
@ -311,6 +326,7 @@ int hfsplus_create_cat(u32, struct inode *, struct qstr *, struct inode *);
int hfsplus_delete_cat(u32, struct inode *, struct qstr *);
int hfsplus_rename_cat(u32, struct inode *, struct qstr *,
struct inode *, struct qstr *);
void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms);
/* dir.c */
extern const struct inode_operations hfsplus_dir_inode_operations;
@ -372,26 +388,15 @@ int hfsplus_read_wrapper(struct super_block *);
int hfs_part_find(struct super_block *, sector_t *, sector_t *);
/* access macros */
/*
static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb)
{
return sb->s_fs_info;
}
static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode)
{
return list_entry(inode, struct hfsplus_inode_info, vfs_inode);
}
*/
#define HFSPLUS_SB(super) (*(struct hfsplus_sb_info *)(super)->s_fs_info)
#define HFSPLUS_I(inode) (*list_entry(inode, struct hfsplus_inode_info, vfs_inode))
#if 1
#define hfsplus_kmap(p) ({ struct page *__p = (p); kmap(__p); })
#define hfsplus_kunmap(p) ({ struct page *__p = (p); kunmap(__p); __p; })
#else
#define hfsplus_kmap(p) kmap(p)
#define hfsplus_kunmap(p) kunmap(p)
#endif
#define sb_bread512(sb, sec, data) ({ \
struct buffer_head *__bh; \
@ -419,6 +424,4 @@ static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode)
#define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec)
#define hfsp_now2mt() __hfsp_ut2mt(get_seconds())
#define kdev_t_to_nr(x) (x)
#endif

3
fs/hfsplus/hfsplus_raw.h
View File

@ -200,6 +200,7 @@ struct hfsplus_cat_key {
struct hfsplus_unistr name;
} __packed;
#define HFSPLUS_CAT_KEYLEN (sizeof(struct hfsplus_cat_key))
/* Structs from hfs.h */
struct hfsp_point {
@ -323,7 +324,7 @@ struct hfsplus_ext_key {
__be32 start_block;
} __packed;
#define HFSPLUS_EXT_KEYLEN 12
#define HFSPLUS_EXT_KEYLEN sizeof(struct hfsplus_ext_key)
/* HFS+ generic BTree key */
typedef union {

183
fs/hfsplus/inode.c
View File

@ -36,7 +36,7 @@ static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
*pagep = NULL;
ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
hfsplus_get_block,
&HFSPLUS_I(mapping->host).phys_size);
&HFSPLUS_I(mapping->host)->phys_size);
if (unlikely(ret)) {
loff_t isize = mapping->host->i_size;
if (pos + len > isize)
@ -62,13 +62,13 @@ static int hfsplus_releasepage(struct page *page, gfp_t mask)
switch (inode->i_ino) {
case HFSPLUS_EXT_CNID:
tree = HFSPLUS_SB(sb).ext_tree;
tree = HFSPLUS_SB(sb)->ext_tree;
break;
case HFSPLUS_CAT_CNID:
tree = HFSPLUS_SB(sb).cat_tree;
tree = HFSPLUS_SB(sb)->cat_tree;
break;
case HFSPLUS_ATTR_CNID:
tree = HFSPLUS_SB(sb).attr_tree;
tree = HFSPLUS_SB(sb)->attr_tree;
break;
default:
BUG();
@ -172,12 +172,13 @@ static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dent
struct hfs_find_data fd;
struct super_block *sb = dir->i_sb;
struct inode *inode = NULL;
struct hfsplus_inode_info *hip;
int err;
if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
goto out;
inode = HFSPLUS_I(dir).rsrc_inode;
inode = HFSPLUS_I(dir)->rsrc_inode;
if (inode)
goto out;
@ -185,12 +186,13 @@ static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dent
if (!inode)
return ERR_PTR(-ENOMEM);
hip = HFSPLUS_I(inode);
inode->i_ino = dir->i_ino;
INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
mutex_init(&HFSPLUS_I(inode).extents_lock);
HFSPLUS_I(inode).flags = HFSPLUS_FLG_RSRC;
INIT_LIST_HEAD(&hip->open_dir_list);
mutex_init(&hip->extents_lock);
hip->flags = HFSPLUS_FLG_RSRC;
hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
err = hfsplus_find_cat(sb, dir->i_ino, &fd);
if (!err)
err = hfsplus_cat_read_inode(inode, &fd);
@ -199,10 +201,18 @@ static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dent
iput(inode);
return ERR_PTR(err);
}
HFSPLUS_I(inode).rsrc_inode = dir;
HFSPLUS_I(dir).rsrc_inode = inode;
hip->rsrc_inode = dir;
HFSPLUS_I(dir)->rsrc_inode = inode;
igrab(dir);
hlist_add_head(&inode->i_hash, &HFSPLUS_SB(sb).rsrc_inodes);
/*
* __mark_inode_dirty expects inodes to be hashed. Since we don't
* want resource fork inodes in the regular inode space, we make them
* appear hashed, but do not put on any lists. hlist_del()
* will work fine and require no locking.
*/
inode->i_hash.pprev = &inode->i_hash.next;
mark_inode_dirty(inode);
out:
d_add(dentry, inode);
@ -211,30 +221,27 @@ out:
static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir)
{
struct super_block *sb = inode->i_sb;
struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
u16 mode;
mode = be16_to_cpu(perms->mode);
inode->i_uid = be32_to_cpu(perms->owner);
if (!inode->i_uid && !mode)
inode->i_uid = HFSPLUS_SB(sb).uid;
inode->i_uid = sbi->uid;
inode->i_gid = be32_to_cpu(perms->group);
if (!inode->i_gid && !mode)
inode->i_gid = HFSPLUS_SB(sb).gid;
inode->i_gid = sbi->gid;
if (dir) {
mode = mode ? (mode & S_IALLUGO) :
(S_IRWXUGO & ~(HFSPLUS_SB(sb).umask));
mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
mode |= S_IFDIR;
} else if (!mode)
mode = S_IFREG | ((S_IRUGO|S_IWUGO) &
~(HFSPLUS_SB(sb).umask));
mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
inode->i_mode = mode;
HFSPLUS_I(inode).rootflags = perms->rootflags;
HFSPLUS_I(inode).userflags = perms->userflags;
HFSPLUS_I(inode)->userflags = perms->userflags;
if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
inode->i_flags |= S_IMMUTABLE;
else
@ -245,30 +252,13 @@ static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, i
inode->i_flags &= ~S_APPEND;
}
static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms)
{
if (inode->i_flags & S_IMMUTABLE)
perms->rootflags |= HFSPLUS_FLG_IMMUTABLE;
else
perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
if (inode->i_flags & S_APPEND)
perms->rootflags |= HFSPLUS_FLG_APPEND;
else
perms->rootflags &= ~HFSPLUS_FLG_APPEND;
perms->userflags = HFSPLUS_I(inode).userflags;
perms->mode = cpu_to_be16(inode->i_mode);
perms->owner = cpu_to_be32(inode->i_uid);
perms->group = cpu_to_be32(inode->i_gid);
perms->dev = cpu_to_be32(HFSPLUS_I(inode).dev);
}
static int hfsplus_file_open(struct inode *inode, struct file *file)
{
if (HFSPLUS_IS_RSRC(inode))
inode = HFSPLUS_I(inode).rsrc_inode;
inode = HFSPLUS_I(inode)->rsrc_inode;
if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
return -EOVERFLOW;
atomic_inc(&HFSPLUS_I(inode).opencnt);
atomic_inc(&HFSPLUS_I(inode)->opencnt);
return 0;
}
@ -277,12 +267,13 @@ static int hfsplus_file_release(struct inode *inode, struct file *file)
struct super_block *sb = inode->i_sb;
if (HFSPLUS_IS_RSRC(inode))
inode = HFSPLUS_I(inode).rsrc_inode;
if (atomic_dec_and_test(&HFSPLUS_I(inode).opencnt)) {
inode = HFSPLUS_I(inode)->rsrc_inode;
if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
mutex_lock(&inode->i_mutex);
hfsplus_file_truncate(inode);
if (inode->i_flags & S_DEAD) {
hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL);
hfsplus_delete_cat(inode->i_ino,
HFSPLUS_SB(sb)->hidden_dir, NULL);
hfsplus_delete_inode(inode);
}
mutex_unlock(&inode->i_mutex);
@ -361,47 +352,52 @@ static const struct file_operations hfsplus_file_operations = {
struct inode *hfsplus_new_inode(struct super_block *sb, int mode)
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct inode *inode = new_inode(sb);
struct hfsplus_inode_info *hip;
if (!inode)
return NULL;
inode->i_ino = HFSPLUS_SB(sb).next_cnid++;
inode->i_ino = sbi->next_cnid++;
inode->i_mode = mode;
inode->i_uid = current_fsuid();
inode->i_gid = current_fsgid();
inode->i_nlink = 1;
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
mutex_init(&HFSPLUS_I(inode).extents_lock);
atomic_set(&HFSPLUS_I(inode).opencnt, 0);
HFSPLUS_I(inode).flags = 0;
memset(HFSPLUS_I(inode).first_extents, 0, sizeof(hfsplus_extent_rec));
memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
HFSPLUS_I(inode).alloc_blocks = 0;
HFSPLUS_I(inode).first_blocks = 0;
HFSPLUS_I(inode).cached_start = 0;
HFSPLUS_I(inode).cached_blocks = 0;
HFSPLUS_I(inode).phys_size = 0;
HFSPLUS_I(inode).fs_blocks = 0;
HFSPLUS_I(inode).rsrc_inode = NULL;
hip = HFSPLUS_I(inode);
INIT_LIST_HEAD(&hip->open_dir_list);
mutex_init(&hip->extents_lock);
atomic_set(&hip->opencnt, 0);
hip->flags = 0;
memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
hip->alloc_blocks = 0;
hip->first_blocks = 0;
hip->cached_start = 0;
hip->cached_blocks = 0;
hip->phys_size = 0;
hip->fs_blocks = 0;
hip->rsrc_inode = NULL;
if (S_ISDIR(inode->i_mode)) {
inode->i_size = 2;
HFSPLUS_SB(sb).folder_count++;
sbi->folder_count++;
inode->i_op = &hfsplus_dir_inode_operations;
inode->i_fop = &hfsplus_dir_operations;
} else if (S_ISREG(inode->i_mode)) {
HFSPLUS_SB(sb).file_count++;
sbi->file_count++;
inode->i_op = &hfsplus_file_inode_operations;
inode->i_fop = &hfsplus_file_operations;
inode->i_mapping->a_ops = &hfsplus_aops;
HFSPLUS_I(inode).clump_blocks = HFSPLUS_SB(sb).data_clump_blocks;
hip->clump_blocks = sbi->data_clump_blocks;
} else if (S_ISLNK(inode->i_mode)) {
HFSPLUS_SB(sb).file_count++;
sbi->file_count++;
inode->i_op = &page_symlink_inode_operations;
inode->i_mapping->a_ops = &hfsplus_aops;
HFSPLUS_I(inode).clump_blocks = 1;
hip->clump_blocks = 1;
} else
HFSPLUS_SB(sb).file_count++;
sbi->file_count++;
insert_inode_hash(inode);
mark_inode_dirty(inode);
sb->s_dirt = 1;
@ -414,11 +410,11 @@ void hfsplus_delete_inode(struct inode *inode)
struct super_block *sb = inode->i_sb;
if (S_ISDIR(inode->i_mode)) {
HFSPLUS_SB(sb).folder_count--;
HFSPLUS_SB(sb)->folder_count--;
sb->s_dirt = 1;
return;
}
HFSPLUS_SB(sb).file_count--;
HFSPLUS_SB(sb)->file_count--;
if (S_ISREG(inode->i_mode)) {
if (!inode->i_nlink) {
inode->i_size = 0;
@ -434,34 +430,39 @@ void hfsplus_delete_inode(struct inode *inode)
void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
{
struct super_block *sb = inode->i_sb;
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
u32 count;
int i;
memcpy(&HFSPLUS_I(inode).first_extents, &fork->extents,
sizeof(hfsplus_extent_rec));
memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
for (count = 0, i = 0; i < 8; i++)
count += be32_to_cpu(fork->extents[i].block_count);
HFSPLUS_I(inode).first_blocks = count;
memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
HFSPLUS_I(inode).cached_start = 0;
HFSPLUS_I(inode).cached_blocks = 0;
hip->first_blocks = count;
memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
hip->cached_start = 0;
hip->cached_blocks = 0;
HFSPLUS_I(inode).alloc_blocks = be32_to_cpu(fork->total_blocks);
inode->i_size = HFSPLUS_I(inode).phys_size = be64_to_cpu(fork->total_size);
HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits);
HFSPLUS_I(inode).clump_blocks = be32_to_cpu(fork->clump_size) >> HFSPLUS_SB(sb).alloc_blksz_shift;
if (!HFSPLUS_I(inode).clump_blocks)
HFSPLUS_I(inode).clump_blocks = HFSPLUS_IS_RSRC(inode) ? HFSPLUS_SB(sb).rsrc_clump_blocks :
HFSPLUS_SB(sb).data_clump_blocks;
hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
hip->fs_blocks =
(inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
hip->clump_blocks =
be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
if (!hip->clump_blocks) {
hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
sbi->rsrc_clump_blocks :
sbi->data_clump_blocks;
}
}
void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
{
memcpy(&fork->extents, &HFSPLUS_I(inode).first_extents,
memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
sizeof(hfsplus_extent_rec));
fork->total_size = cpu_to_be64(inode->i_size);
fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode).alloc_blocks);
fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
}
int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
@ -472,7 +473,7 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
HFSPLUS_I(inode).dev = 0;
HFSPLUS_I(inode)->linkid = 0;
if (type == HFSPLUS_FOLDER) {
struct hfsplus_cat_folder *folder = &entry.folder;
@ -486,8 +487,8 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
inode->i_atime = hfsp_mt2ut(folder->access_date);
inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
HFSPLUS_I(inode).create_date = folder->create_date;
HFSPLUS_I(inode).fs_blocks = 0;
HFSPLUS_I(inode)->create_date = folder->create_date;
HFSPLUS_I(inode)->fs_blocks = 0;
inode->i_op = &hfsplus_dir_inode_operations;
inode->i_fop = &hfsplus_dir_operations;
} else if (type == HFSPLUS_FILE) {
@ -518,7 +519,7 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
inode->i_atime = hfsp_mt2ut(file->access_date);
inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
HFSPLUS_I(inode).create_date = file->create_date;
HFSPLUS_I(inode)->create_date = file->create_date;
} else {
printk(KERN_ERR "hfs: bad catalog entry used to create inode\n");
res = -EIO;
@ -533,12 +534,12 @@ int hfsplus_cat_write_inode(struct inode *inode)
hfsplus_cat_entry entry;
if (HFSPLUS_IS_RSRC(inode))
main_inode = HFSPLUS_I(inode).rsrc_inode;
main_inode = HFSPLUS_I(inode)->rsrc_inode;
if (!main_inode->i_nlink)
return 0;
if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb).cat_tree, &fd))
if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
/* panic? */
return -EIO;
@ -554,7 +555,7 @@ int hfsplus_cat_write_inode(struct inode *inode)
hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
sizeof(struct hfsplus_cat_folder));
/* simple node checks? */
hfsplus_set_perms(inode, &folder->permissions);
hfsplus_cat_set_perms(inode, &folder->permissions);
folder->access_date = hfsp_ut2mt(inode->i_atime);
folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
@ -576,11 +577,7 @@ int hfsplus_cat_write_inode(struct inode *inode)
hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
sizeof(struct hfsplus_cat_file));
hfsplus_inode_write_fork(inode, &file->data_fork);
if (S_ISREG(inode->i_mode))
HFSPLUS_I(inode).dev = inode->i_nlink;
if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
HFSPLUS_I(inode).dev = kdev_t_to_nr(inode->i_rdev);
hfsplus_set_perms(inode, &file->permissions);
hfsplus_cat_set_perms(inode, &file->permissions);
if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
else

159
fs/hfsplus/ioctl.c
View File

@ -17,83 +17,98 @@
#include <linux/mount.h>
#include <linux/sched.h>
#include <linux/xattr.h>
#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include "hfsplus_fs.h"
long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
static int hfsplus_ioctl_getflags(struct file *file, int __user *user_flags)
{
struct inode *inode = filp->f_path.dentry->d_inode;
unsigned int flags;
struct inode *inode = file->f_path.dentry->d_inode;
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
unsigned int flags = 0;
if (inode->i_flags & S_IMMUTABLE)
flags |= FS_IMMUTABLE_FL;
if (inode->i_flags |= S_APPEND)
flags |= FS_APPEND_FL;
if (hip->userflags & HFSPLUS_FLG_NODUMP)
flags |= FS_NODUMP_FL;
return put_user(flags, user_flags);
}
static int hfsplus_ioctl_setflags(struct file *file, int __user *user_flags)
{
struct inode *inode = file->f_path.dentry->d_inode;
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
unsigned int flags;
int err = 0;
err = mnt_want_write(file->f_path.mnt);
if (err)
goto out;
if (!is_owner_or_cap(inode)) {
err = -EACCES;
goto out_drop_write;
}
if (get_user(flags, user_flags)) {
err = -EFAULT;
goto out_drop_write;
}
mutex_lock(&inode->i_mutex);
if ((flags & (FS_IMMUTABLE_FL|FS_APPEND_FL)) ||
inode->i_flags & (S_IMMUTABLE|S_APPEND)) {
if (!capable(CAP_LINUX_IMMUTABLE)) {
err = -EPERM;
goto out_unlock_inode;
}
}
/* don't silently ignore unsupported ext2 flags */
if (flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) {
err = -EOPNOTSUPP;
goto out_unlock_inode;
}
if (flags & FS_IMMUTABLE_FL)
inode->i_flags |= S_IMMUTABLE;
else
inode->i_flags &= ~S_IMMUTABLE;
if (flags & FS_APPEND_FL)
inode->i_flags |= S_APPEND;
else
inode->i_flags &= ~S_APPEND;
if (flags & FS_NODUMP_FL)
hip->userflags |= HFSPLUS_FLG_NODUMP;
else
hip->userflags &= ~HFSPLUS_FLG_NODUMP;
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
out_unlock_inode:
mutex_lock(&inode->i_mutex);
out_drop_write:
mnt_drop_write(file->f_path.mnt);
out:
return err;
}
long hfsplus_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
lock_kernel();
switch (cmd) {
case HFSPLUS_IOC_EXT2_GETFLAGS:
flags = 0;
if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_IMMUTABLE)
flags |= FS_IMMUTABLE_FL; /* EXT2_IMMUTABLE_FL */
if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_APPEND)
flags |= FS_APPEND_FL; /* EXT2_APPEND_FL */
if (HFSPLUS_I(inode).userflags & HFSPLUS_FLG_NODUMP)
flags |= FS_NODUMP_FL; /* EXT2_NODUMP_FL */
return put_user(flags, (int __user *)arg);
case HFSPLUS_IOC_EXT2_SETFLAGS: {
int err = 0;
err = mnt_want_write(filp->f_path.mnt);
if (err) {
unlock_kernel();
return err;
}
if (!is_owner_or_cap(inode)) {
err = -EACCES;
goto setflags_out;
}
if (get_user(flags, (int __user *)arg)) {
err = -EFAULT;
goto setflags_out;
}
if (flags & (FS_IMMUTABLE_FL|FS_APPEND_FL) ||
HFSPLUS_I(inode).rootflags & (HFSPLUS_FLG_IMMUTABLE|HFSPLUS_FLG_APPEND)) {
if (!capable(CAP_LINUX_IMMUTABLE)) {
err = -EPERM;
goto setflags_out;
}
}
/* don't silently ignore unsupported ext2 flags */
if (flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) {
err = -EOPNOTSUPP;
goto setflags_out;
}
if (flags & FS_IMMUTABLE_FL) { /* EXT2_IMMUTABLE_FL */
inode->i_flags |= S_IMMUTABLE;
HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_IMMUTABLE;
} else {
inode->i_flags &= ~S_IMMUTABLE;
HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
}
if (flags & FS_APPEND_FL) { /* EXT2_APPEND_FL */
inode->i_flags |= S_APPEND;
HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_APPEND;
} else {
inode->i_flags &= ~S_APPEND;
HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_APPEND;
}
if (flags & FS_NODUMP_FL) /* EXT2_NODUMP_FL */
HFSPLUS_I(inode).userflags |= HFSPLUS_FLG_NODUMP;
else
HFSPLUS_I(inode).userflags &= ~HFSPLUS_FLG_NODUMP;
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
setflags_out:
mnt_drop_write(filp->f_path.mnt);
unlock_kernel();
return err;
}
return hfsplus_ioctl_getflags(file, argp);
case HFSPLUS_IOC_EXT2_SETFLAGS:
return hfsplus_ioctl_setflags(file, argp);
default:
unlock_kernel();
return -ENOTTY;
}
}
@ -110,7 +125,7 @@ int hfsplus_setxattr(struct dentry *dentry, const char *name,
if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode))
return -EOPNOTSUPP;
res = hfs_find_init(HFSPLUS_SB(inode->i_sb).cat_tree, &fd);
res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);
if (res)
return res;
res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
@ -153,7 +168,7 @@ ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
return -EOPNOTSUPP;
if (size) {
res = hfs_find_init(HFSPLUS_SB(inode->i_sb).cat_tree, &fd);
res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);
if (res)
return res;
res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
@ -177,7 +192,7 @@ ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
} else
res = size ? -ERANGE : 4;
} else
res = -ENODATA;
res = -EOPNOTSUPP;
out:
if (size)
hfs_find_exit(&fd);

10
fs/hfsplus/options.c
View File

@ -143,13 +143,13 @@ int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi)
kfree(p);
break;
case opt_decompose:
sbi->flags &= ~HFSPLUS_SB_NODECOMPOSE;
clear_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags);
break;
case opt_nodecompose:
sbi->flags |= HFSPLUS_SB_NODECOMPOSE;
set_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags);
break;
case opt_force:
sbi->flags |= HFSPLUS_SB_FORCE;
set_bit(HFSPLUS_SB_FORCE, &sbi->flags);
break;
default:
return 0;
@ -171,7 +171,7 @@ done:
int hfsplus_show_options(struct seq_file *seq, struct vfsmount *mnt)
{
struct hfsplus_sb_info *sbi = &HFSPLUS_SB(mnt->mnt_sb);
struct hfsplus_sb_info *sbi = HFSPLUS_SB(mnt->mnt_sb);
if (sbi->creator != HFSPLUS_DEF_CR_TYPE)
seq_printf(seq, ",creator=%.4s", (char *)&sbi->creator);
@ -184,7 +184,7 @@ int hfsplus_show_options(struct seq_file *seq, struct vfsmount *mnt)
seq_printf(seq, ",session=%u", sbi->session);
if (sbi->nls)
seq_printf(seq, ",nls=%s", sbi->nls->charset);
if (sbi->flags & HFSPLUS_SB_NODECOMPOSE)
if (test_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags))
seq_printf(seq, ",nodecompose");
return 0;
}

5
fs/hfsplus/part_tbl.c
View File

@ -74,6 +74,7 @@ struct old_pmap {
int hfs_part_find(struct super_block *sb,
sector_t *part_start, sector_t *part_size)
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct buffer_head *bh;
__be16 *data;
int i, size, res;
@ -95,7 +96,7 @@ int hfs_part_find(struct super_block *sb,
for (i = 0; i < size; p++, i++) {
if (p->pdStart && p->pdSize &&
p->pdFSID == cpu_to_be32(0x54465331)/*"TFS1"*/ &&
(HFSPLUS_SB(sb).part < 0 || HFSPLUS_SB(sb).part == i)) {
(sbi->part < 0 || sbi->part == i)) {
*part_start += be32_to_cpu(p->pdStart);
*part_size = be32_to_cpu(p->pdSize);
res = 0;
@ -111,7 +112,7 @@ int hfs_part_find(struct super_block *sb,
size = be32_to_cpu(pm->pmMapBlkCnt);
for (i = 0; i < size;) {
if (!memcmp(pm->pmPartType,"Apple_HFS", 9) &&
(HFSPLUS_SB(sb).part < 0 || HFSPLUS_SB(sb).part == i)) {
(sbi->part < 0 || sbi->part == i)) {
*part_start += be32_to_cpu(pm->pmPyPartStart);
*part_size = be32_to_cpu(pm->pmPartBlkCnt);
res = 0;

322
fs/hfsplus/super.c
View File

@ -12,7 +12,6 @@
#include <linux/pagemap.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/vfs.h>
#include <linux/nls.h>
@ -21,40 +20,11 @@ static void hfsplus_destroy_inode(struct inode *inode);
#include "hfsplus_fs.h"
struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino)
static int hfsplus_system_read_inode(struct inode *inode)
{
struct hfs_find_data fd;
struct hfsplus_vh *vhdr;
struct inode *inode;
long err = -EIO;
struct hfsplus_vh *vhdr = HFSPLUS_SB(inode->i_sb)->s_vhdr;
inode = iget_locked(sb, ino);
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
mutex_init(&HFSPLUS_I(inode).extents_lock);
HFSPLUS_I(inode).flags = 0;
HFSPLUS_I(inode).rsrc_inode = NULL;
atomic_set(&HFSPLUS_I(inode).opencnt, 0);
if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) {
read_inode:
hfs_find_init(HFSPLUS_SB(inode->i_sb).cat_tree, &fd);
err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
if (!err)
err = hfsplus_cat_read_inode(inode, &fd);
hfs_find_exit(&fd);
if (err)
goto bad_inode;
goto done;
}
vhdr = HFSPLUS_SB(inode->i_sb).s_vhdr;
switch(inode->i_ino) {
case HFSPLUS_ROOT_CNID:
goto read_inode;
switch (inode->i_ino) {
case HFSPLUS_EXT_CNID:
hfsplus_inode_read_fork(inode, &vhdr->ext_file);
inode->i_mapping->a_ops = &hfsplus_btree_aops;
@ -75,74 +45,101 @@ struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino)
inode->i_mapping->a_ops = &hfsplus_btree_aops;
break;
default:
goto bad_inode;
return -EIO;
}
return 0;
}
struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino)
{
struct hfs_find_data fd;
struct inode *inode;
int err;
inode = iget_locked(sb, ino);
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
INIT_LIST_HEAD(&HFSPLUS_I(inode)->open_dir_list);
mutex_init(&HFSPLUS_I(inode)->extents_lock);
HFSPLUS_I(inode)->flags = 0;
HFSPLUS_I(inode)->rsrc_inode = NULL;
atomic_set(&HFSPLUS_I(inode)->opencnt, 0);
if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID ||
inode->i_ino == HFSPLUS_ROOT_CNID) {
hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);
err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
if (!err)
err = hfsplus_cat_read_inode(inode, &fd);
hfs_find_exit(&fd);
} else {
err = hfsplus_system_read_inode(inode);
}
if (err) {
iget_failed(inode);
return ERR_PTR(err);
}
done:
unlock_new_inode(inode);
return inode;
}
bad_inode:
iget_failed(inode);
return ERR_PTR(err);
static int hfsplus_system_write_inode(struct inode *inode)
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
struct hfsplus_vh *vhdr = sbi->s_vhdr;
struct hfsplus_fork_raw *fork;
struct hfs_btree *tree = NULL;
switch (inode->i_ino) {
case HFSPLUS_EXT_CNID:
fork = &vhdr->ext_file;
tree = sbi->ext_tree;
break;
case HFSPLUS_CAT_CNID:
fork = &vhdr->cat_file;
tree = sbi->cat_tree;
break;
case HFSPLUS_ALLOC_CNID:
fork = &vhdr->alloc_file;
break;
case HFSPLUS_START_CNID:
fork = &vhdr->start_file;
break;
case HFSPLUS_ATTR_CNID:
fork = &vhdr->attr_file;
tree = sbi->attr_tree;
default:
return -EIO;
}
if (fork->total_size != cpu_to_be64(inode->i_size)) {
set_bit(HFSPLUS_SB_WRITEBACKUP, &sbi->flags);
inode->i_sb->s_dirt = 1;
}
hfsplus_inode_write_fork(inode, fork);
if (tree)
hfs_btree_write(tree);
return 0;
}
static int hfsplus_write_inode(struct inode *inode,
struct writeback_control *wbc)
{
struct hfsplus_vh *vhdr;
int ret = 0;
dprint(DBG_INODE, "hfsplus_write_inode: %lu\n", inode->i_ino);
hfsplus_ext_write_extent(inode);
if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) {
if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID ||
inode->i_ino == HFSPLUS_ROOT_CNID)
return hfsplus_cat_write_inode(inode);
}
vhdr = HFSPLUS_SB(inode->i_sb).s_vhdr;
switch (inode->i_ino) {
case HFSPLUS_ROOT_CNID:
ret = hfsplus_cat_write_inode(inode);
break;
case HFSPLUS_EXT_CNID:
if (vhdr->ext_file.total_size != cpu_to_be64(inode->i_size)) {
HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
inode->i_sb->s_dirt = 1;
}
hfsplus_inode_write_fork(inode, &vhdr->ext_file);
hfs_btree_write(HFSPLUS_SB(inode->i_sb).ext_tree);
break;
case HFSPLUS_CAT_CNID:
if (vhdr->cat_file.total_size != cpu_to_be64(inode->i_size)) {
HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
inode->i_sb->s_dirt = 1;
}
hfsplus_inode_write_fork(inode, &vhdr->cat_file);
hfs_btree_write(HFSPLUS_SB(inode->i_sb).cat_tree);
break;
case HFSPLUS_ALLOC_CNID:
if (vhdr->alloc_file.total_size != cpu_to_be64(inode->i_size)) {
HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
inode->i_sb->s_dirt = 1;
}
hfsplus_inode_write_fork(inode, &vhdr->alloc_file);
break;
case HFSPLUS_START_CNID:
if (vhdr->start_file.total_size != cpu_to_be64(inode->i_size)) {
HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
inode->i_sb->s_dirt = 1;
}
hfsplus_inode_write_fork(inode, &vhdr->start_file);
break;
case HFSPLUS_ATTR_CNID:
if (vhdr->attr_file.total_size != cpu_to_be64(inode->i_size)) {
HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
inode->i_sb->s_dirt = 1;
}
hfsplus_inode_write_fork(inode, &vhdr->attr_file);
hfs_btree_write(HFSPLUS_SB(inode->i_sb).attr_tree);
break;
}
return ret;
else
return hfsplus_system_write_inode(inode);
}
static void hfsplus_evict_inode(struct inode *inode)
@ -151,51 +148,53 @@ static void hfsplus_evict_inode(struct inode *inode)
truncate_inode_pages(&inode->i_data, 0);
end_writeback(inode);
if (HFSPLUS_IS_RSRC(inode)) {
HFSPLUS_I(HFSPLUS_I(inode).rsrc_inode).rsrc_inode = NULL;
iput(HFSPLUS_I(inode).rsrc_inode);
HFSPLUS_I(HFSPLUS_I(inode)->rsrc_inode)->rsrc_inode = NULL;
iput(HFSPLUS_I(inode)->rsrc_inode);
}
}
int hfsplus_sync_fs(struct super_block *sb, int wait)
{
struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct hfsplus_vh *vhdr = sbi->s_vhdr;
dprint(DBG_SUPER, "hfsplus_write_super\n");
lock_super(sb);
mutex_lock(&sbi->vh_mutex);
mutex_lock(&sbi->alloc_mutex);
sb->s_dirt = 0;
vhdr->free_blocks = cpu_to_be32(HFSPLUS_SB(sb).free_blocks);
vhdr->next_alloc = cpu_to_be32(HFSPLUS_SB(sb).next_alloc);
vhdr->next_cnid = cpu_to_be32(HFSPLUS_SB(sb).next_cnid);
vhdr->folder_count = cpu_to_be32(HFSPLUS_SB(sb).folder_count);
vhdr->file_count = cpu_to_be32(HFSPLUS_SB(sb).file_count);
vhdr->free_blocks = cpu_to_be32(sbi->free_blocks);
vhdr->next_cnid = cpu_to_be32(sbi->next_cnid);
vhdr->folder_count = cpu_to_be32(sbi->folder_count);
vhdr->file_count = cpu_to_be32(sbi->file_count);
mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh);
if (HFSPLUS_SB(sb).flags & HFSPLUS_SB_WRITEBACKUP) {
if (HFSPLUS_SB(sb).sect_count) {
mark_buffer_dirty(sbi->s_vhbh);
if (test_and_clear_bit(HFSPLUS_SB_WRITEBACKUP, &sbi->flags)) {
if (sbi->sect_count) {
struct buffer_head *bh;
u32 block, offset;
block = HFSPLUS_SB(sb).blockoffset;
block += (HFSPLUS_SB(sb).sect_count - 2) >> (sb->s_blocksize_bits - 9);
offset = ((HFSPLUS_SB(sb).sect_count - 2) << 9) & (sb->s_blocksize - 1);
printk(KERN_DEBUG "hfs: backup: %u,%u,%u,%u\n", HFSPLUS_SB(sb).blockoffset,
HFSPLUS_SB(sb).sect_count, block, offset);
block = sbi->blockoffset;
block += (sbi->sect_count - 2) >> (sb->s_blocksize_bits - 9);
offset = ((sbi->sect_count - 2) << 9) & (sb->s_blocksize - 1);
printk(KERN_DEBUG "hfs: backup: %u,%u,%u,%u\n",
sbi->blockoffset, sbi->sect_count,
block, offset);
bh = sb_bread(sb, block);
if (bh) {
vhdr = (struct hfsplus_vh *)(bh->b_data + offset);
if (be16_to_cpu(vhdr->signature) == HFSPLUS_VOLHEAD_SIG) {
memcpy(vhdr, HFSPLUS_SB(sb).s_vhdr, sizeof(*vhdr));
memcpy(vhdr, sbi->s_vhdr, sizeof(*vhdr));
mark_buffer_dirty(bh);
brelse(bh);
} else
printk(KERN_WARNING "hfs: backup not found!\n");
}
}
HFSPLUS_SB(sb).flags &= ~HFSPLUS_SB_WRITEBACKUP;
}
unlock_super(sb);
mutex_unlock(&sbi->alloc_mutex);
mutex_unlock(&sbi->vh_mutex);
return 0;
}
@ -209,48 +208,48 @@ static void hfsplus_write_super(struct super_block *sb)
static void hfsplus_put_super(struct super_block *sb)
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
dprint(DBG_SUPER, "hfsplus_put_super\n");
if (!sb->s_fs_info)
return;
lock_kernel();
if (sb->s_dirt)
hfsplus_write_super(sb);
if (!(sb->s_flags & MS_RDONLY) && HFSPLUS_SB(sb).s_vhdr) {
struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
if (!(sb->s_flags & MS_RDONLY) && sbi->s_vhdr) {
struct hfsplus_vh *vhdr = sbi->s_vhdr;
vhdr->modify_date = hfsp_now2mt();
vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_UNMNT);
vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_INCNSTNT);
mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh);
sync_dirty_buffer(HFSPLUS_SB(sb).s_vhbh);
mark_buffer_dirty(sbi->s_vhbh);
sync_dirty_buffer(sbi->s_vhbh);
}
hfs_btree_close(HFSPLUS_SB(sb).cat_tree);
hfs_btree_close(HFSPLUS_SB(sb).ext_tree);
iput(HFSPLUS_SB(sb).alloc_file);
iput(HFSPLUS_SB(sb).hidden_dir);
brelse(HFSPLUS_SB(sb).s_vhbh);
unload_nls(HFSPLUS_SB(sb).nls);
hfs_btree_close(sbi->cat_tree);
hfs_btree_close(sbi->ext_tree);
iput(sbi->alloc_file);
iput(sbi->hidden_dir);
brelse(sbi->s_vhbh);
unload_nls(sbi->nls);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
unlock_kernel();
}
static int hfsplus_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
buf->f_type = HFSPLUS_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = HFSPLUS_SB(sb).total_blocks << HFSPLUS_SB(sb).fs_shift;
buf->f_bfree = HFSPLUS_SB(sb).free_blocks << HFSPLUS_SB(sb).fs_shift;
buf->f_blocks = sbi->total_blocks << sbi->fs_shift;
buf->f_bfree = sbi->free_blocks << sbi->fs_shift;
buf->f_bavail = buf->f_bfree;
buf->f_files = 0xFFFFFFFF;
buf->f_ffree = 0xFFFFFFFF - HFSPLUS_SB(sb).next_cnid;
buf->f_ffree = 0xFFFFFFFF - sbi->next_cnid;
buf->f_fsid.val[0] = (u32)id;
buf->f_fsid.val[1] = (u32)(id >> 32);
buf->f_namelen = HFSPLUS_MAX_STRLEN;
@ -263,11 +262,11 @@ static int hfsplus_remount(struct super_block *sb, int *flags, char *data)
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
return 0;
if (!(*flags & MS_RDONLY)) {
struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
struct hfsplus_vh *vhdr = HFSPLUS_SB(sb)->s_vhdr;
struct hfsplus_sb_info sbi;
memset(&sbi, 0, sizeof(struct hfsplus_sb_info));
sbi.nls = HFSPLUS_SB(sb).nls;
sbi.nls = HFSPLUS_SB(sb)->nls;
if (!hfsplus_parse_options(data, &sbi))
return -EINVAL;
@ -276,7 +275,7 @@ static int hfsplus_remount(struct super_block *sb, int *flags, char *data)
"running fsck.hfsplus is recommended. leaving read-only.\n");
sb->s_flags |= MS_RDONLY;
*flags |= MS_RDONLY;
} else if (sbi.flags & HFSPLUS_SB_FORCE) {
} else if (test_bit(HFSPLUS_SB_FORCE, &sbi.flags)) {
/* nothing */
} else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) {
printk(KERN_WARNING "hfs: filesystem is marked locked, leaving read-only.\n");
@ -320,7 +319,8 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
return -ENOMEM;
sb->s_fs_info = sbi;
INIT_HLIST_HEAD(&sbi->rsrc_inodes);
mutex_init(&sbi->alloc_mutex);
mutex_init(&sbi->vh_mutex);
hfsplus_fill_defaults(sbi);
if (!hfsplus_parse_options(data, sbi)) {
printk(KERN_ERR "hfs: unable to parse mount options\n");
@ -344,7 +344,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
err = -EINVAL;
goto cleanup;
}
vhdr = HFSPLUS_SB(sb).s_vhdr;
vhdr = sbi->s_vhdr;
/* Copy parts of the volume header into the superblock */
sb->s_magic = HFSPLUS_VOLHEAD_SIG;
@ -353,18 +353,19 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
printk(KERN_ERR "hfs: wrong filesystem version\n");
goto cleanup;
}
HFSPLUS_SB(sb).total_blocks = be32_to_cpu(vhdr->total_blocks);
HFSPLUS_SB(sb).free_blocks = be32_to_cpu(vhdr->free_blocks);
HFSPLUS_SB(sb).next_alloc = be32_to_cpu(vhdr->next_alloc);
HFSPLUS_SB(sb).next_cnid = be32_to_cpu(vhdr->next_cnid);
HFSPLUS_SB(sb).file_count = be32_to_cpu(vhdr->file_count);
HFSPLUS_SB(sb).folder_count = be32_to_cpu(vhdr->folder_count);
HFSPLUS_SB(sb).data_clump_blocks = be32_to_cpu(vhdr->data_clump_sz) >> HFSPLUS_SB(sb).alloc_blksz_shift;
if (!HFSPLUS_SB(sb).data_clump_blocks)
HFSPLUS_SB(sb).data_clump_blocks = 1;
HFSPLUS_SB(sb).rsrc_clump_blocks = be32_to_cpu(vhdr->rsrc_clump_sz) >> HFSPLUS_SB(sb).alloc_blksz_shift;
if (!HFSPLUS_SB(sb).rsrc_clump_blocks)
HFSPLUS_SB(sb).rsrc_clump_blocks = 1;
sbi->total_blocks = be32_to_cpu(vhdr->total_blocks);
sbi->free_blocks = be32_to_cpu(vhdr->free_blocks);
sbi->next_cnid = be32_to_cpu(vhdr->next_cnid);
sbi->file_count = be32_to_cpu(vhdr->file_count);
sbi->folder_count = be32_to_cpu(vhdr->folder_count);
sbi->data_clump_blocks =
be32_to_cpu(vhdr->data_clump_sz) >> sbi->alloc_blksz_shift;
if (!sbi->data_clump_blocks)
sbi->data_clump_blocks = 1;
sbi->rsrc_clump_blocks =
be32_to_cpu(vhdr->rsrc_clump_sz) >> sbi->alloc_blksz_shift;
if (!sbi->rsrc_clump_blocks)
sbi->rsrc_clump_blocks = 1;
/* Set up operations so we can load metadata */
sb->s_op = &hfsplus_sops;
@ -374,7 +375,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
printk(KERN_WARNING "hfs: Filesystem was not cleanly unmounted, "
"running fsck.hfsplus is recommended. mounting read-only.\n");
sb->s_flags |= MS_RDONLY;
} else if (sbi->flags & HFSPLUS_SB_FORCE) {
} else if (test_and_clear_bit(HFSPLUS_SB_FORCE, &sbi->flags)) {
/* nothing */
} else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) {
printk(KERN_WARNING "hfs: Filesystem is marked locked, mounting read-only.\n");
@ -384,16 +385,15 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
"use the force option at your own risk, mounting read-only.\n");
sb->s_flags |= MS_RDONLY;
}
sbi->flags &= ~HFSPLUS_SB_FORCE;
/* Load metadata objects (B*Trees) */
HFSPLUS_SB(sb).ext_tree = hfs_btree_open(sb, HFSPLUS_EXT_CNID);
if (!HFSPLUS_SB(sb).ext_tree) {
sbi->ext_tree = hfs_btree_open(sb, HFSPLUS_EXT_CNID);
if (!sbi->ext_tree) {
printk(KERN_ERR "hfs: failed to load extents file\n");
goto cleanup;
}
HFSPLUS_SB(sb).cat_tree = hfs_btree_open(sb, HFSPLUS_CAT_CNID);
if (!HFSPLUS_SB(sb).cat_tree) {
sbi->cat_tree = hfs_btree_open(sb, HFSPLUS_CAT_CNID);
if (!sbi->cat_tree) {
printk(KERN_ERR "hfs: failed to load catalog file\n");
goto cleanup;
}
@ -404,7 +404,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
err = PTR_ERR(inode);
goto cleanup;
}
HFSPLUS_SB(sb).alloc_file = inode;
sbi->alloc_file = inode;
/* Load the root directory */
root = hfsplus_iget(sb, HFSPLUS_ROOT_CNID);
@ -423,7 +423,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
str.len = sizeof(HFSP_HIDDENDIR_NAME) - 1;
str.name = HFSP_HIDDENDIR_NAME;
hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
hfs_find_init(sbi->cat_tree, &fd);
hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_ROOT_CNID, &str);
if (!hfs_brec_read(&fd, &entry, sizeof(entry))) {
hfs_find_exit(&fd);
@ -434,7 +434,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
err = PTR_ERR(inode);
goto cleanup;
}
HFSPLUS_SB(sb).hidden_dir = inode;
sbi->hidden_dir = inode;
} else
hfs_find_exit(&fd);
@ -449,15 +449,19 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
be32_add_cpu(&vhdr->write_count, 1);
vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_UNMNT);
vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_INCNSTNT);
mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh);
sync_dirty_buffer(HFSPLUS_SB(sb).s_vhbh);
mark_buffer_dirty(sbi->s_vhbh);
sync_dirty_buffer(sbi->s_vhbh);
if (!HFSPLUS_SB(sb).hidden_dir) {
if (!sbi->hidden_dir) {
printk(KERN_DEBUG "hfs: create hidden dir...\n");
HFSPLUS_SB(sb).hidden_dir = hfsplus_new_inode(sb, S_IFDIR);
hfsplus_create_cat(HFSPLUS_SB(sb).hidden_dir->i_ino, sb->s_root->d_inode,
&str, HFSPLUS_SB(sb).hidden_dir);
mark_inode_dirty(HFSPLUS_SB(sb).hidden_dir);
mutex_lock(&sbi->vh_mutex);
sbi->hidden_dir = hfsplus_new_inode(sb, S_IFDIR);
hfsplus_create_cat(sbi->hidden_dir->i_ino, sb->s_root->d_inode,
&str, sbi->hidden_dir);
mutex_unlock(&sbi->vh_mutex);
mark_inode_dirty(sbi->hidden_dir);
}
out:
unload_nls(sbi->nls);
@ -486,7 +490,7 @@ static struct inode *hfsplus_alloc_inode(struct super_block *sb)
static void hfsplus_destroy_inode(struct inode *inode)
{
kmem_cache_free(hfsplus_inode_cachep, &HFSPLUS_I(inode));
kmem_cache_free(hfsplus_inode_cachep, HFSPLUS_I(inode));
}
#define HFSPLUS_INODE_SIZE sizeof(struct hfsplus_inode_info)

16
fs/hfsplus/unicode.c
View File

@ -121,7 +121,7 @@ static u16 *hfsplus_compose_lookup(u16 *p, u16 cc)
int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr, char *astr, int *len_p)
{
const hfsplus_unichr *ip;
struct nls_table *nls = HFSPLUS_SB(sb).nls;
struct nls_table *nls = HFSPLUS_SB(sb)->nls;
u8 *op;
u16 cc, c0, c1;
u16 *ce1, *ce2;
@ -132,7 +132,7 @@ int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr, c
ustrlen = be16_to_cpu(ustr->length);
len = *len_p;
ce1 = NULL;
compose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE);
compose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags);
while (ustrlen > 0) {
c0 = be16_to_cpu(*ip++);
@ -246,7 +246,7 @@ out:
static inline int asc2unichar(struct super_block *sb, const char *astr, int len,
wchar_t *uc)
{
int size = HFSPLUS_SB(sb).nls->char2uni(astr, len, uc);
int size = HFSPLUS_SB(sb)->nls->char2uni(astr, len, uc);
if (size <= 0) {
*uc = '?';
size = 1;
@ -293,7 +293,7 @@ int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr,
u16 *dstr, outlen = 0;
wchar_t c;
decompose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE);
decompose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags);
while (outlen < HFSPLUS_MAX_STRLEN && len > 0) {
size = asc2unichar(sb, astr, len, &c);
@ -330,8 +330,8 @@ int hfsplus_hash_dentry(struct dentry *dentry, struct qstr *str)
wchar_t c;
u16 c2;
casefold = (HFSPLUS_SB(sb).flags & HFSPLUS_SB_CASEFOLD);
decompose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE);
casefold = test_bit(HFSPLUS_SB_CASEFOLD, &HFSPLUS_SB(sb)->flags);
decompose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags);
hash = init_name_hash();
astr = str->name;
len = str->len;
@ -373,8 +373,8 @@ int hfsplus_compare_dentry(struct dentry *dentry, struct qstr *s1, struct qstr *
u16 c1, c2;
wchar_t c;
casefold = (HFSPLUS_SB(sb).flags & HFSPLUS_SB_CASEFOLD);
decompose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE);
casefold = test_bit(HFSPLUS_SB_CASEFOLD, &HFSPLUS_SB(sb)->flags);
decompose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags);
astr1 = s1->name;
len1 = s1->len;
astr2 = s2->name;

40
fs/hfsplus/wrapper.c
View File

@ -65,8 +65,8 @@ static int hfsplus_get_last_session(struct super_block *sb,
*start = 0;
*size = sb->s_bdev->bd_inode->i_size >> 9;
if (HFSPLUS_SB(sb).session >= 0) {
te.cdte_track = HFSPLUS_SB(sb).session;
if (HFSPLUS_SB(sb)->session >= 0) {
te.cdte_track = HFSPLUS_SB(sb)->session;
te.cdte_format = CDROM_LBA;
res = ioctl_by_bdev(sb->s_bdev, CDROMREADTOCENTRY, (unsigned long)&te);
if (!res && (te.cdte_ctrl & CDROM_DATA_TRACK) == 4) {
@ -87,6 +87,7 @@ static int hfsplus_get_last_session(struct super_block *sb,
/* Takes in super block, returns true if good data read */
int hfsplus_read_wrapper(struct super_block *sb)
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct buffer_head *bh;
struct hfsplus_vh *vhdr;
struct hfsplus_wd wd;
@ -122,7 +123,7 @@ int hfsplus_read_wrapper(struct super_block *sb)
if (vhdr->signature == cpu_to_be16(HFSPLUS_VOLHEAD_SIG))
break;
if (vhdr->signature == cpu_to_be16(HFSPLUS_VOLHEAD_SIGX)) {
HFSPLUS_SB(sb).flags |= HFSPLUS_SB_HFSX;
set_bit(HFSPLUS_SB_HFSX, &sbi->flags);
break;
}
brelse(bh);
@ -143,11 +144,11 @@ int hfsplus_read_wrapper(struct super_block *sb)
if (blocksize < HFSPLUS_SECTOR_SIZE ||
((blocksize - 1) & blocksize))
return -EINVAL;
HFSPLUS_SB(sb).alloc_blksz = blocksize;
HFSPLUS_SB(sb).alloc_blksz_shift = 0;
sbi->alloc_blksz = blocksize;
sbi->alloc_blksz_shift = 0;
while ((blocksize >>= 1) != 0)
HFSPLUS_SB(sb).alloc_blksz_shift++;
blocksize = min(HFSPLUS_SB(sb).alloc_blksz, (u32)PAGE_SIZE);
sbi->alloc_blksz_shift++;
blocksize = min(sbi->alloc_blksz, (u32)PAGE_SIZE);
/* align block size to block offset */
while (part_start & ((blocksize >> HFSPLUS_SECTOR_SHIFT) - 1))
@ -158,23 +159,26 @@ int hfsplus_read_wrapper(struct super_block *sb)
return -EINVAL;
}
HFSPLUS_SB(sb).blockoffset = part_start >>
(sb->s_blocksize_bits - HFSPLUS_SECTOR_SHIFT);
HFSPLUS_SB(sb).sect_count = part_size;
HFSPLUS_SB(sb).fs_shift = HFSPLUS_SB(sb).alloc_blksz_shift -
sb->s_blocksize_bits;
sbi->blockoffset =
part_start >> (sb->s_blocksize_bits - HFSPLUS_SECTOR_SHIFT);
sbi->sect_count = part_size;
sbi->fs_shift = sbi->alloc_blksz_shift - sb->s_blocksize_bits;
bh = sb_bread512(sb, part_start + HFSPLUS_VOLHEAD_SECTOR, vhdr);
if (!bh)
return -EIO;
/* should still be the same... */
if (vhdr->signature != (HFSPLUS_SB(sb).flags & HFSPLUS_SB_HFSX ?
cpu_to_be16(HFSPLUS_VOLHEAD_SIGX) :
cpu_to_be16(HFSPLUS_VOLHEAD_SIG)))
goto error;
HFSPLUS_SB(sb).s_vhbh = bh;
HFSPLUS_SB(sb).s_vhdr = vhdr;
if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) {
if (vhdr->signature != cpu_to_be16(HFSPLUS_VOLHEAD_SIGX))
goto error;
} else {
if (vhdr->signature != cpu_to_be16(HFSPLUS_VOLHEAD_SIG))
goto error;
}
sbi->s_vhbh = bh;
sbi->s_vhdr = vhdr;
return 0;
error: