Hi Hin-Tak,
On Sep 15, 2012, at 4:11 AM, Hin-Tak Leung wrote:
> Vyacheslav Dubeyko wrote:
>> Hi,
>>
>> This patch adds support of manipulation by attributes file.
>>
>> With the best regards,
>> Vyacheslav Dubeyko.
>> --
>> From: Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
>> Subject: [PATCH 4/4] hfsplus: add support of manipulation by attributes file
>>
>> This patch adds support of manipulation by attributes file.
>>
>> Reported-by: Hin-Tak Leung <htl10@xxxxxxxxxxxxxxxxxxxxx>
>> Signed-off-by: Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
>
> NACK. It does not work (i.e. cannot read attributes of files which have them), and also generates a lot of warnings, "hfs: xattr searching failed".
>
> The files I looked at are the font suitecase files in the /System/Library/Fonts directory.
>
By the way, do you really confident that any file in your /System/Library/Fonts folder have any extended attribute?
On my Mac none file in /System/Library/Fonts folder has any extended attribute. Could you check presence on extended attributes under Mac OS X by means of `xattr -l` command?
With the best regards,
Vyacheslav Dubeyko.
>> ---
>> fs/hfsplus/bfind.c | 79 +++++++++++++++++++++++++++++++++++++++-------
>> fs/hfsplus/bnode.c | 6 ++-
>> fs/hfsplus/brec.c | 23 ++++++++-----
>> fs/hfsplus/btree.c | 8 +++++
>> fs/hfsplus/catalog.c | 36 +++++++++++++--------
>> fs/hfsplus/dir.c | 24 ++++++++------
>> fs/hfsplus/extents.c | 4 +-
>> fs/hfsplus/hfsplus_fs.h | 41 ++++++++++++++++++++++--
>> fs/hfsplus/inode.c | 13 ++++++++
>> fs/hfsplus/super.c | 36 ++++++++++++++++++++-
>> fs/hfsplus/unicode.c | 7 ++--
>> 11 files changed, 219 insertions(+), 58 deletions(-)
>>
>> diff --git a/fs/hfsplus/bfind.c b/fs/hfsplus/bfind.c
>> index 5d799c1..55baffa 100644
>> --- a/fs/hfsplus/bfind.c
>> +++ b/fs/hfsplus/bfind.c
>> @@ -38,15 +38,73 @@ void hfs_find_exit(struct hfs_find_data *fd)
>> fd->tree = NULL;
>> }
>>
>> -/* Find the record in bnode that best matches key (not greater than...)*/
>> -int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd)
>> +int hfs_find_1st_rec_by_cnid(struct hfs_bnode *bnode,
>> + struct hfs_find_data *fd,
>> + int *begin,
>> + int *end,
>> + int *cur_rec)
>> +{
>> + __be32 cur_cnid, search_cnid;
>> +
>> + if (bnode->tree->cnid == HFSPLUS_EXT_CNID) {
>> + cur_cnid = fd->key->ext.cnid;
>> + search_cnid = fd->search_key->ext.cnid;
>> + } else if (bnode->tree->cnid == HFSPLUS_CAT_CNID) {
>> + cur_cnid = fd->key->cat.parent;
>> + search_cnid = fd->search_key->cat.parent;
>> + } else if (bnode->tree->cnid == HFSPLUS_ATTR_CNID) {
>> + cur_cnid = fd->key->attr.cnid;
>> + search_cnid = fd->search_key->attr.cnid;
>> + } else
>> + BUG();
>> +
>> + if (cur_cnid == search_cnid) {
>> + (*end) = (*cur_rec);
>> + if ((*begin) == (*end))
>> + return 1;
>> + } else {
>> + if (be32_to_cpu(cur_cnid) < be32_to_cpu(search_cnid))
>> + (*begin) = (*cur_rec) + 1;
>> + else
>> + (*end) = (*cur_rec) - 1;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +int hfs_find_rec_by_key(struct hfs_bnode *bnode,
>> + struct hfs_find_data *fd,
>> + int *begin,
>> + int *end,
>> + int *cur_rec)
>> {
>> int cmpval;
>> +
>> + cmpval = bnode->tree->keycmp(fd->key, fd->search_key);
>> + if (!cmpval) {
>> + (*end) = (*cur_rec);
>> + return 1;
>> + }
>> + if (cmpval < 0)
>> + (*begin) = (*cur_rec) + 1;
>> + else
>> + *(end) = (*cur_rec) - 1;
>> +
>> + return 0;
>> +}
>> +
>> +/* Find the record in bnode that best matches key (not greater than...)*/
>> +int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd,
>> + search_strategy_t rec_found)
>> +{
>> u16 off, len, keylen;
>> int rec;
>> int b, e;
>> int res;
>>
>> + if (!rec_found)
>> + BUG();
>> +
>> b = 0;
>> e = bnode->num_recs - 1;
>> res = -ENOENT;
>> @@ -59,17 +117,12 @@ int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd)
>> goto fail;
>> }
>> hfs_bnode_read(bnode, fd->key, off, keylen);
>> - cmpval = bnode->tree->keycmp(fd->key, fd->search_key);
>> - if (!cmpval) {
>> - e = rec;
>> + if (rec_found(bnode, fd, &b, &e, &rec)) {
>> res = 0;
>> goto done;
>> }
>> - if (cmpval < 0)
>> - b = rec + 1;
>> - else
>> - e = rec - 1;
>> } while (b <= e);
>> +
>> if (rec != e && e >= 0) {
>> len = hfs_brec_lenoff(bnode, e, &off);
>> keylen = hfs_brec_keylen(bnode, e);
>> @@ -79,19 +132,21 @@ int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd)
>> }
>> hfs_bnode_read(bnode, fd->key, off, keylen);
>> }
>> +
>> done:
>> fd->record = e;
>> fd->keyoffset = off;
>> fd->keylength = keylen;
>> fd->entryoffset = off + keylen;
>> fd->entrylength = len - keylen;
>> +
>> fail:
>> return res;
>> }
>>
>> /* Traverse a B*Tree from the root to a leaf finding best fit to key */
>> /* Return allocated copy of node found, set recnum to best record */
>> -int hfs_brec_find(struct hfs_find_data *fd)
>> +int hfs_brec_find(struct hfs_find_data *fd, search_strategy_t do_key_compare)
>> {
>> struct hfs_btree *tree;
>> struct hfs_bnode *bnode;
>> @@ -122,7 +177,7 @@ int hfs_brec_find(struct hfs_find_data *fd)
>> goto invalid;
>> bnode->parent = parent;
>>
>> - res = __hfs_brec_find(bnode, fd);
>> + res = __hfs_brec_find(bnode, fd, do_key_compare);
>> if (!height)
>> break;
>> if (fd->record < 0)
>> @@ -149,7 +204,7 @@ int hfs_brec_read(struct hfs_find_data *fd, void *rec, int rec_len)
>> {
>> int res;
>>
>> - res = hfs_brec_find(fd);
>> + res = hfs_brec_find(fd, hfs_find_rec_by_key);
>> if (res)
>> return res;
>> if (fd->entrylength > rec_len)
>> diff --git a/fs/hfsplus/bnode.c b/fs/hfsplus/bnode.c
>> index 1c42cc5..5c125ce 100644
>> --- a/fs/hfsplus/bnode.c
>> +++ b/fs/hfsplus/bnode.c
>> @@ -62,7 +62,8 @@ void hfs_bnode_read_key(struct hfs_bnode *node, void *key, int off)
>>
>> tree = node->tree;
>> if (node->type == HFS_NODE_LEAF ||
>> - tree->attributes & HFS_TREE_VARIDXKEYS)
>> + tree->attributes & HFS_TREE_VARIDXKEYS ||
>> + node->tree->cnid == HFSPLUS_ATTR_CNID)
>> key_len = hfs_bnode_read_u16(node, off) + 2;
>> else
>> key_len = tree->max_key_len + 2;
>> @@ -314,7 +315,8 @@ void hfs_bnode_dump(struct hfs_bnode *node)
>> if (i && node->type == HFS_NODE_INDEX) {
>> int tmp;
>>
>> - if (node->tree->attributes & HFS_TREE_VARIDXKEYS)
>> + if (node->tree->attributes & HFS_TREE_VARIDXKEYS ||
>> + node->tree->cnid == HFSPLUS_ATTR_CNID)
>> tmp = hfs_bnode_read_u16(node, key_off) + 2;
>> else
>> tmp = node->tree->max_key_len + 2;
>> diff --git a/fs/hfsplus/brec.c b/fs/hfsplus/brec.c
>> index 2a734cf..298d4e4 100644
>> --- a/fs/hfsplus/brec.c
>> +++ b/fs/hfsplus/brec.c
>> @@ -36,7 +36,8 @@ u16 hfs_brec_keylen(struct hfs_bnode *node, u16 rec)
>> return 0;
>>
>> if ((node->type == HFS_NODE_INDEX) &&
>> - !(node->tree->attributes & HFS_TREE_VARIDXKEYS)) {
>> + !(node->tree->attributes & HFS_TREE_VARIDXKEYS) &&
>> + (node->tree->cnid != HFSPLUS_ATTR_CNID)) {
>> retval = node->tree->max_key_len + 2;
>> } else {
>> recoff = hfs_bnode_read_u16(node,
>> @@ -151,12 +152,13 @@ skip:
>>
>> /* get index key */
>> hfs_bnode_read_key(new_node, fd->search_key, 14);
>> - __hfs_brec_find(fd->bnode, fd);
>> + __hfs_brec_find(fd->bnode, fd, hfs_find_rec_by_key);
>>
>> hfs_bnode_put(new_node);
>> new_node = NULL;
>>
>> - if (tree->attributes & HFS_TREE_VARIDXKEYS)
>> + if ((tree->attributes & HFS_TREE_VARIDXKEYS) ||
>> + (tree->cnid == HFSPLUS_ATTR_CNID))
>> key_len = be16_to_cpu(fd->search_key->key_len) + 2;
>> else {
>> fd->search_key->key_len =
>> @@ -201,7 +203,7 @@ again:
>> hfs_bnode_put(node);
>> node = fd->bnode = parent;
>>
>> - __hfs_brec_find(node, fd);
>> + __hfs_brec_find(node, fd, hfs_find_rec_by_key);
>> goto again;
>> }
>> hfs_bnode_write_u16(node,
>> @@ -367,12 +369,13 @@ again:
>> parent = hfs_bnode_find(tree, node->parent);
>> if (IS_ERR(parent))
>> return PTR_ERR(parent);
>> - __hfs_brec_find(parent, fd);
>> + __hfs_brec_find(parent, fd, hfs_find_rec_by_key);
>> hfs_bnode_dump(parent);
>> rec = fd->record;
>>
>> /* size difference between old and new key */
>> - if (tree->attributes & HFS_TREE_VARIDXKEYS)
>> + if ((tree->attributes & HFS_TREE_VARIDXKEYS) ||
>> + (tree->cnid == HFSPLUS_ATTR_CNID))
>> newkeylen = hfs_bnode_read_u16(node, 14) + 2;
>> else
>> fd->keylength = newkeylen = tree->max_key_len + 2;
>> @@ -427,7 +430,7 @@ skip:
>> hfs_bnode_read_key(new_node, fd->search_key, 14);
>> cnid = cpu_to_be32(new_node->this);
>>
>> - __hfs_brec_find(fd->bnode, fd);
>> + __hfs_brec_find(fd->bnode, fd, hfs_find_rec_by_key);
>> hfs_brec_insert(fd, &cnid, sizeof(cnid));
>> hfs_bnode_put(fd->bnode);
>> hfs_bnode_put(new_node);
>> @@ -495,13 +498,15 @@ static int hfs_btree_inc_height(struct hfs_btree *tree)
>> /* insert old root idx into new root */
>> node->parent = tree->root;
>> if (node->type == HFS_NODE_LEAF ||
>> - tree->attributes & HFS_TREE_VARIDXKEYS)
>> + tree->attributes & HFS_TREE_VARIDXKEYS ||
>> + tree->cnid == HFSPLUS_ATTR_CNID)
>> key_size = hfs_bnode_read_u16(node, 14) + 2;
>> else
>> key_size = tree->max_key_len + 2;
>> hfs_bnode_copy(new_node, 14, node, 14, key_size);
>>
>> - if (!(tree->attributes & HFS_TREE_VARIDXKEYS)) {
>> + if (!(tree->attributes & HFS_TREE_VARIDXKEYS) &&
>> + (tree->cnid != HFSPLUS_ATTR_CNID)) {
>> key_size = tree->max_key_len + 2;
>> hfs_bnode_write_u16(new_node, 14, tree->max_key_len);
>> }
>> diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c
>> index 21023d9..44294af 100644
>> --- a/fs/hfsplus/btree.c
>> +++ b/fs/hfsplus/btree.c
>> @@ -98,6 +98,14 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
>> set_bit(HFSPLUS_SB_CASEFOLD, &HFSPLUS_SB(sb)->flags);
>> }
>> break;
>> + case HFSPLUS_ATTR_CNID:
>> + if (tree->max_key_len != HFSPLUS_ATTR_KEYLEN - sizeof(u16)) {
>> + printk(KERN_ERR "hfs: invalid attributes max_key_len %d\n",
>> + tree->max_key_len);
>> + goto fail_page;
>> + }
>> + tree->keycmp = hfsplus_attr_bin_cmp_key;
>> + break;
>> default:
>> printk(KERN_ERR "hfs: unknown B*Tree requested\n");
>> goto fail_page;
>> diff --git a/fs/hfsplus/catalog.c b/fs/hfsplus/catalog.c
>> index ec2a9c2..c285c8d 100644
>> --- a/fs/hfsplus/catalog.c
>> +++ b/fs/hfsplus/catalog.c
>> @@ -45,7 +45,8 @@ void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *key,
>>
>> key->cat.parent = cpu_to_be32(parent);
>> if (str) {
>> - hfsplus_asc2uni(sb, &key->cat.name, str->name, str->len);
>> + hfsplus_asc2uni(sb, &key->cat.name, HFSPLUS_MAX_STRLEN,
>> + str->name, str->len);
>> len = be16_to_cpu(key->cat.name.length);
>> } else {
>> key->cat.name.length = 0;
>> @@ -167,7 +168,8 @@ static int hfsplus_fill_cat_thread(struct super_block *sb,
>> entry->type = cpu_to_be16(type);
>> entry->thread.reserved = 0;
>> entry->thread.parentID = cpu_to_be32(parentid);
>> - hfsplus_asc2uni(sb, &entry->thread.nodeName, str->name, str->len);
>> + hfsplus_asc2uni(sb, &entry->thread.nodeName, HFSPLUS_MAX_STRLEN,
>> + str->name, str->len);
>> return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2;
>> }
>>
>> @@ -198,7 +200,7 @@ int hfsplus_find_cat(struct super_block *sb, u32 cnid,
>> hfsplus_cat_build_key_uni(fd->search_key,
>> be32_to_cpu(tmp.thread.parentID),
>> &tmp.thread.nodeName);
>> - return hfs_brec_find(fd);
>> + return hfs_brec_find(fd, hfs_find_rec_by_key);
>> }
>>
>> int hfsplus_create_cat(u32 cnid, struct inode *dir,
>> @@ -221,7 +223,7 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir,
>> S_ISDIR(inode->i_mode) ?
>> HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
>> dir->i_ino, str);
>> - err = hfs_brec_find(&fd);
>> + err = hfs_brec_find(&fd, hfs_find_rec_by_key);
>> if (err != -ENOENT) {
>> if (!err)
>> err = -EEXIST;
>> @@ -233,7 +235,7 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir,
>>
>> hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
>> entry_size = hfsplus_cat_build_record(&entry, cnid, inode);
>> - err = hfs_brec_find(&fd);
>> + err = hfs_brec_find(&fd, hfs_find_rec_by_key);
>> if (err != -ENOENT) {
>> /* panic? */
>> if (!err)
>> @@ -253,7 +255,7 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir,
>>
>> err1:
>> hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
>> - if (!hfs_brec_find(&fd))
>> + if (!hfs_brec_find(&fd, hfs_find_rec_by_key))
>> hfs_brec_remove(&fd);
>> err2:
>> hfs_find_exit(&fd);
>> @@ -279,7 +281,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
>> int len;
>>
>> hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
>> - err = hfs_brec_find(&fd);
>> + err = hfs_brec_find(&fd, hfs_find_rec_by_key);
>> if (err)
>> goto out;
>>
>> @@ -296,7 +298,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
>> } else
>> hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
>>
>> - err = hfs_brec_find(&fd);
>> + err = hfs_brec_find(&fd, hfs_find_rec_by_key);
>> if (err)
>> goto out;
>>
>> @@ -326,7 +328,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
>> goto out;
>>
>> hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
>> - err = hfs_brec_find(&fd);
>> + err = hfs_brec_find(&fd, hfs_find_rec_by_key);
>> if (err)
>> goto out;
>>
>> @@ -337,6 +339,12 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
>> dir->i_size--;
>> dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
>> hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);
>> +
>> + if (type == HFSPLUS_FILE || type == HFSPLUS_FOLDER) {
>> + if (HFSPLUS_SB(sb)->attr_tree)
>> + hfsplus_delete_all_attrs(dir, cnid);
>> + }
>> +
>> out:
>> hfs_find_exit(&fd);
>>
>> @@ -363,7 +371,7 @@ int hfsplus_rename_cat(u32 cnid,
>>
>> /* find the old dir entry and read the data */
>> hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
>> - err = hfs_brec_find(&src_fd);
>> + err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
>> if (err)
>> goto out;
>> if (src_fd.entrylength > sizeof(entry) || src_fd.entrylength < 0) {
>> @@ -376,7 +384,7 @@ int hfsplus_rename_cat(u32 cnid,
>>
>> /* create new dir entry with the data from the old entry */
>> hfsplus_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name);
>> - err = hfs_brec_find(&dst_fd);
>> + err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
>> if (err != -ENOENT) {
>> if (!err)
>> err = -EEXIST;
>> @@ -391,7 +399,7 @@ int hfsplus_rename_cat(u32 cnid,
>>
>> /* finally remove the old entry */
>> hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
>> - err = hfs_brec_find(&src_fd);
>> + err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
>> if (err)
>> goto out;
>> err = hfs_brec_remove(&src_fd);
>> @@ -402,7 +410,7 @@ int hfsplus_rename_cat(u32 cnid,
>>
>> /* remove old thread entry */
>> hfsplus_cat_build_key(sb, src_fd.search_key, cnid, NULL);
>> - err = hfs_brec_find(&src_fd);
>> + err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
>> if (err)
>> goto out;
>> type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset);
>> @@ -414,7 +422,7 @@ int hfsplus_rename_cat(u32 cnid,
>> hfsplus_cat_build_key(sb, dst_fd.search_key, cnid, NULL);
>> entry_size = hfsplus_fill_cat_thread(sb, &entry, type,
>> dst_dir->i_ino, dst_name);
>> - err = hfs_brec_find(&dst_fd);
>> + err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
>> if (err != -ENOENT) {
>> if (!err)
>> err = -EEXIST;
>> diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
>> index 6b9f921..ededee4 100644
>> --- a/fs/hfsplus/dir.c
>> +++ b/fs/hfsplus/dir.c
>> @@ -138,7 +138,7 @@ static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir)
>> if (err)
>> return err;
>> hfsplus_cat_build_key(sb, fd.search_key, inode->i_ino, NULL);
>> - err = hfs_brec_find(&fd);
>> + err = hfs_brec_find(&fd, hfs_find_rec_by_key);
>> if (err)
>> goto out;
>>
>> @@ -499,15 +499,19 @@ static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry,
>> }
>>
>> const struct inode_operations hfsplus_dir_inode_operations = {
>> - .lookup = hfsplus_lookup,
>> - .create = hfsplus_create,
>> - .link = hfsplus_link,
>> - .unlink = hfsplus_unlink,
>> - .mkdir = hfsplus_mkdir,
>> - .rmdir = hfsplus_rmdir,
>> - .symlink = hfsplus_symlink,
>> - .mknod = hfsplus_mknod,
>> - .rename = hfsplus_rename,
>> + .lookup = hfsplus_lookup,
>> + .create = hfsplus_create,
>> + .link = hfsplus_link,
>> + .unlink = hfsplus_unlink,
>> + .mkdir = hfsplus_mkdir,
>> + .rmdir = hfsplus_rmdir,
>> + .symlink = hfsplus_symlink,
>> + .mknod = hfsplus_mknod,
>> + .rename = hfsplus_rename,
>> + .setxattr = hfsplus_setxattr,
>> + .getxattr = hfsplus_getxattr,
>> + .listxattr = hfsplus_listxattr,
>> + .removexattr = hfsplus_removexattr,
>> };
>>
>> const struct file_operations hfsplus_dir_operations = {
>> diff --git a/fs/hfsplus/extents.c b/fs/hfsplus/extents.c
>> index 5849e3e..87e59e9 100644
>> --- a/fs/hfsplus/extents.c
>> +++ b/fs/hfsplus/extents.c
>> @@ -95,7 +95,7 @@ static void __hfsplus_ext_write_extent(struct inode *inode,
>> HFSPLUS_IS_RSRC(inode) ?
>> HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA);
>>
>> - res = hfs_brec_find(fd);
>> + res = hfs_brec_find(fd, hfs_find_rec_by_key);
>> if (hip->extent_state & HFSPLUS_EXT_NEW) {
>> if (res != -ENOENT)
>> return;
>> @@ -154,7 +154,7 @@ static inline int __hfsplus_ext_read_extent(struct hfs_find_data *fd,
>>
>> hfsplus_ext_build_key(fd->search_key, cnid, block, type);
>> fd->key->ext.cnid = 0;
>> - res = hfs_brec_find(fd);
>> + res = hfs_brec_find(fd, hfs_find_rec_by_key);
>> if (res && res != -ENOENT)
>> return res;
>> if (fd->key->ext.cnid != fd->search_key->ext.cnid ||
>> diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
>> index 558dbb4..03ed580 100644
>> --- a/fs/hfsplus/hfsplus_fs.h
>> +++ b/fs/hfsplus/hfsplus_fs.h
>> @@ -23,6 +23,7 @@
>> #define DBG_SUPER 0x00000010
>> #define DBG_EXTENT 0x00000020
>> #define DBG_BITMAP 0x00000040
>> +#define DBG_ATTR_MOD 0x00000080
>>
>> #if 0
>> #define DBG_MASK (DBG_EXTENT|DBG_INODE|DBG_BNODE_MOD)
>> @@ -223,6 +224,7 @@ struct hfsplus_inode_info {
>> #define HFSPLUS_I_CAT_DIRTY 1 /* has changes in the catalog tree */
>> #define HFSPLUS_I_EXT_DIRTY 2 /* has changes in the extent tree */
>> #define HFSPLUS_I_ALLOC_DIRTY 3 /* has changes in the allocation file */
>> +#define HFSPLUS_I_ATTR_DIRTY 4 /* has changes in the attributes tree */
>>
>> #define HFSPLUS_IS_RSRC(inode) \
>> test_bit(HFSPLUS_I_RSRC, &HFSPLUS_I(inode)->flags)
>> @@ -302,7 +304,7 @@ static inline unsigned short hfsplus_min_io_size(struct super_block *sb)
>> #define hfs_brec_remove hfsplus_brec_remove
>> #define hfs_find_init hfsplus_find_init
>> #define hfs_find_exit hfsplus_find_exit
>> -#define __hfs_brec_find __hplusfs_brec_find
>> +#define __hfs_brec_find __hfsplus_brec_find
>> #define hfs_brec_find hfsplus_brec_find
>> #define hfs_brec_read hfsplus_brec_read
>> #define hfs_brec_goto hfsplus_brec_goto
>> @@ -324,10 +326,33 @@ static inline unsigned short hfsplus_min_io_size(struct super_block *sb)
>> */
>> #define HFSPLUS_IOC_BLESS _IO('h', 0x80)
>>
>> +typedef int (*search_strategy_t)(struct hfs_bnode *,
>> + struct hfs_find_data *,
>> + int *, int *, int *);
>> +
>> /*
>> * Functions in any *.c used in other files
>> */
>>
>> +/* attributes.c */
>> +int hfsplus_create_attr_tree_cache(void);
>> +void hfsplus_destroy_attr_tree_cache(void);
>> +hfsplus_attr_entry *hfsplus_alloc_attr_entry(void);
>> +void hfsplus_destroy_attr_entry(hfsplus_attr_entry *entry_p);
>> +int hfsplus_attr_bin_cmp_key(const hfsplus_btree_key *,
>> + const hfsplus_btree_key *);
>> +int hfsplus_attr_build_key(struct super_block *, hfsplus_btree_key *,
>> + u32, const char *);
>> +void hfsplus_attr_build_key_uni(hfsplus_btree_key *key,
>> + u32 cnid,
>> + struct hfsplus_attr_unistr *name);
>> +int hfsplus_find_attr(struct super_block *, u32,
>> + const char *, struct hfs_find_data *);
>> +int hfsplus_attr_exists(struct inode *inode, const char *name);
>> +int hfsplus_create_attr(struct inode *, const char *, const void *, size_t);
>> +int hfsplus_delete_attr(struct inode *, const char *);
>> +int hfsplus_delete_all_attrs(struct inode *dir, u32 cnid);
>> +
>> /* bitmap.c */
>> int hfsplus_block_allocate(struct super_block *, u32, u32, u32 *);
>> int hfsplus_block_free(struct super_block *, u32, u32);
>> @@ -369,8 +394,15 @@ int hfs_brec_remove(struct hfs_find_data *);
>> /* bfind.c */
>> int hfs_find_init(struct hfs_btree *, struct hfs_find_data *);
>> void hfs_find_exit(struct hfs_find_data *);
>> -int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *);
>> -int hfs_brec_find(struct hfs_find_data *);
>> +int hfs_find_1st_rec_by_cnid(struct hfs_bnode *,
>> + struct hfs_find_data *,
>> + int *, int *, int *);
>> +int hfs_find_rec_by_key(struct hfs_bnode *,
>> + struct hfs_find_data *,
>> + int *, int *, int *);
>> +int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *,
>> + search_strategy_t);
>> +int hfs_brec_find(struct hfs_find_data *, search_strategy_t);
>> int hfs_brec_read(struct hfs_find_data *, void *, int);
>> int hfs_brec_goto(struct hfs_find_data *, int);
>>
>> @@ -422,6 +454,7 @@ int hfsplus_setxattr(struct dentry *dentry, const char *name,
>> ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
>> void *value, size_t size);
>> ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size);
>> +int hfsplus_removexattr(struct dentry *dentry, const char *name);
>>
>> /* options.c */
>> int hfsplus_parse_options(char *, struct hfsplus_sb_info *);
>> @@ -446,7 +479,7 @@ int hfsplus_strcmp(const struct hfsplus_unistr *,
>> int hfsplus_uni2asc(struct super_block *,
>> const struct hfsplus_unistr *, char *, int *);
>> int hfsplus_asc2uni(struct super_block *,
>> - struct hfsplus_unistr *, const char *, int);
>> + struct hfsplus_unistr *, int, const char *, int);
>> int hfsplus_hash_dentry(const struct dentry *dentry,
>> const struct inode *inode, struct qstr *str);
>> int hfsplus_compare_dentry(const struct dentry *parent,
>> diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
>> index 3d8b4a6..98a6210 100644
>> --- a/fs/hfsplus/inode.c
>> +++ b/fs/hfsplus/inode.c
>> @@ -342,6 +342,18 @@ int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
>> error = error2;
>> }
>>
>> + if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) {
>> + if (sbi->attr_tree) {
>> + error2 =
>> + filemap_write_and_wait(
>> + sbi->attr_tree->inode->i_mapping);
>> + if (!error)
>> + error = error2;
>> + } else {
>> + printk(KERN_ERR "hfs: sync non-existent attributes tree\n");
>> + }
>> + }
>> +
>> if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) {
>> error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
>> if (!error)
>> @@ -363,6 +375,7 @@ static const struct inode_operations hfsplus_file_inode_operations = {
>> .setxattr = hfsplus_setxattr,
>> .getxattr = hfsplus_getxattr,
>> .listxattr = hfsplus_listxattr,
>> + .removexattr = hfsplus_removexattr,
>> };
>>
>> static const struct file_operations hfsplus_file_operations = {
>> diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
>> index 811a84d..250b695 100644
>> --- a/fs/hfsplus/super.c
>> +++ b/fs/hfsplus/super.c
>> @@ -118,6 +118,7 @@ static int hfsplus_system_write_inode(struct inode *inode)
>> case HFSPLUS_ATTR_CNID:
>> fork = &vhdr->attr_file;
>> tree = sbi->attr_tree;
>> + break;
>> default:
>> return -EIO;
>> }
>> @@ -185,6 +186,12 @@ static int hfsplus_sync_fs(struct super_block *sb, int wait)
>> error2 = filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
>> if (!error)
>> error = error2;
>> + if (sbi->attr_tree) {
>> + error2 =
>> + filemap_write_and_wait(sbi->attr_tree->inode->i_mapping);
>> + if (!error)
>> + error = error2;
>> + }
>> error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
>> if (!error)
>> error = error2;
>> @@ -272,6 +279,7 @@ static void hfsplus_put_super(struct super_block *sb)
>> hfsplus_sync_fs(sb, 1);
>> }
>>
>> + hfs_btree_close(sbi->attr_tree);
>> hfs_btree_close(sbi->cat_tree);
>> hfs_btree_close(sbi->ext_tree);
>> iput(sbi->alloc_file);
>> @@ -468,12 +476,19 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
>> printk(KERN_ERR "hfs: failed to load catalog file\n");
>> goto out_close_ext_tree;
>> }
>> + if (vhdr->attr_file.total_blocks != 0) {
>> + sbi->attr_tree = hfs_btree_open(sb, HFSPLUS_ATTR_CNID);
>> + if (!sbi->attr_tree) {
>> + printk(KERN_ERR "hfs: failed to load attributes file\n");
>> + goto out_close_cat_tree;
>> + }
>> + }
>>
>> inode = hfsplus_iget(sb, HFSPLUS_ALLOC_CNID);
>> if (IS_ERR(inode)) {
>> printk(KERN_ERR "hfs: failed to load allocation file\n");
>> err = PTR_ERR(inode);
>> - goto out_close_cat_tree;
>> + goto out_close_attr_tree;
>> }
>> sbi->alloc_file = inode;
>>
>> @@ -553,6 +568,8 @@ out_put_root:
>> sb->s_root = NULL;
>> out_put_alloc_file:
>> iput(sbi->alloc_file);
>> +out_close_attr_tree:
>> + hfs_btree_close(sbi->attr_tree);
>> out_close_cat_tree:
>> hfs_btree_close(sbi->cat_tree);
>> out_close_ext_tree:
>> @@ -626,9 +643,23 @@ static int __init init_hfsplus_fs(void)
>> hfsplus_init_once);
>> if (!hfsplus_inode_cachep)
>> return -ENOMEM;
>> +
>> + err = hfsplus_create_attr_tree_cache();
>> + if (err)
>> + goto destroy_inode_cache;
>> +
>> err = register_filesystem(&hfsplus_fs_type);
>> if (err)
>> - kmem_cache_destroy(hfsplus_inode_cachep);
>> + goto destroy_attr_tree_cache;
>> +
>> + return 0;
>> +
>> +destroy_attr_tree_cache:
>> + hfsplus_destroy_attr_tree_cache();
>> +
>> +destroy_inode_cache:
>> + kmem_cache_destroy(hfsplus_inode_cachep);
>> +
>> return err;
>> }
>>
>> @@ -641,6 +672,7 @@ static void __exit exit_hfsplus_fs(void)
>> * destroy cache.
>> */
>> rcu_barrier();
>> + hfsplus_destroy_attr_tree_cache();
>> kmem_cache_destroy(hfsplus_inode_cachep);
>> }
>>
>> diff --git a/fs/hfsplus/unicode.c b/fs/hfsplus/unicode.c
>> index a32998f..2c2e47d 100644
>> --- a/fs/hfsplus/unicode.c
>> +++ b/fs/hfsplus/unicode.c
>> @@ -295,7 +295,8 @@ static inline u16 *decompose_unichar(wchar_t uc, int *size)
>> return hfsplus_decompose_table + (off / 4);
>> }
>>
>> -int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr,
>> +int hfsplus_asc2uni(struct super_block *sb,
>> + struct hfsplus_unistr *ustr, int max_unistr_len,
>> const char *astr, int len)
>> {
>> int size, dsize, decompose;
>> @@ -303,7 +304,7 @@ int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr,
>> wchar_t c;
>>
>> decompose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags);
>> - while (outlen < HFSPLUS_MAX_STRLEN && len > 0) {
>> + while (outlen < max_unistr_len && len > 0) {
>> size = asc2unichar(sb, astr, len, &c);
>>
>> if (decompose)
>> @@ -311,7 +312,7 @@ int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr,
>> else
>> dstr = NULL;
>> if (dstr) {
>> - if (outlen + dsize > HFSPLUS_MAX_STRLEN)
>> + if (outlen + dsize > max_unistr_len)
>> break;
>> do {
>> ustr->unicode[outlen++] = cpu_to_be16(*dstr++);
>>
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