aboutsummaryrefslogtreecommitdiff
path: root/fs/hfsplus
diff options
context:
space:
mode:
Diffstat (limited to 'fs/hfsplus')
-rw-r--r--fs/hfsplus/Makefile4
-rw-r--r--fs/hfsplus/attributes.c399
-rw-r--r--fs/hfsplus/bfind.c93
-rw-r--r--fs/hfsplus/bnode.c8
-rw-r--r--fs/hfsplus/brec.c23
-rw-r--r--fs/hfsplus/btree.c8
-rw-r--r--fs/hfsplus/catalog.c36
-rw-r--r--fs/hfsplus/dir.c55
-rw-r--r--fs/hfsplus/extents.c4
-rw-r--r--fs/hfsplus/hfsplus_fs.h52
-rw-r--r--fs/hfsplus/hfsplus_raw.h68
-rw-r--r--fs/hfsplus/inode.c18
-rw-r--r--fs/hfsplus/ioctl.c108
-rw-r--r--fs/hfsplus/super.c56
-rw-r--r--fs/hfsplus/unicode.c7
-rw-r--r--fs/hfsplus/xattr.c709
-rw-r--r--fs/hfsplus/xattr.h60
-rw-r--r--fs/hfsplus/xattr_security.c104
-rw-r--r--fs/hfsplus/xattr_trusted.c63
-rw-r--r--fs/hfsplus/xattr_user.c63
20 files changed, 1753 insertions, 185 deletions
diff --git a/fs/hfsplus/Makefile b/fs/hfsplus/Makefile
index 3cc0df73015..09d278bb7b9 100644
--- a/fs/hfsplus/Makefile
+++ b/fs/hfsplus/Makefile
@@ -5,5 +5,5 @@
obj-$(CONFIG_HFSPLUS_FS) += hfsplus.o
hfsplus-objs := super.o options.o inode.o ioctl.o extents.o catalog.o dir.o btree.o \
- bnode.o brec.o bfind.o tables.o unicode.o wrapper.o bitmap.o part_tbl.o
-
+ bnode.o brec.o bfind.o tables.o unicode.o wrapper.o bitmap.o part_tbl.o \
+ attributes.o xattr.o xattr_user.o xattr_security.o xattr_trusted.o
diff --git a/fs/hfsplus/attributes.c b/fs/hfsplus/attributes.c
new file mode 100644
index 00000000000..8d691f12471
--- /dev/null
+++ b/fs/hfsplus/attributes.c
@@ -0,0 +1,399 @@
+/*
+ * linux/fs/hfsplus/attributes.c
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Handling of records in attributes tree
+ */
+
+#include "hfsplus_fs.h"
+#include "hfsplus_raw.h"
+
+static struct kmem_cache *hfsplus_attr_tree_cachep;
+
+int hfsplus_create_attr_tree_cache(void)
+{
+ if (hfsplus_attr_tree_cachep)
+ return -EEXIST;
+
+ hfsplus_attr_tree_cachep =
+ kmem_cache_create("hfsplus_attr_cache",
+ sizeof(hfsplus_attr_entry), 0,
+ SLAB_HWCACHE_ALIGN, NULL);
+ if (!hfsplus_attr_tree_cachep)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void hfsplus_destroy_attr_tree_cache(void)
+{
+ kmem_cache_destroy(hfsplus_attr_tree_cachep);
+}
+
+int hfsplus_attr_bin_cmp_key(const hfsplus_btree_key *k1,
+ const hfsplus_btree_key *k2)
+{
+ __be32 k1_cnid, k2_cnid;
+
+ k1_cnid = k1->attr.cnid;
+ k2_cnid = k2->attr.cnid;
+ if (k1_cnid != k2_cnid)
+ return be32_to_cpu(k1_cnid) < be32_to_cpu(k2_cnid) ? -1 : 1;
+
+ return hfsplus_strcmp(
+ (const struct hfsplus_unistr *)&k1->attr.key_name,
+ (const struct hfsplus_unistr *)&k2->attr.key_name);
+}
+
+int hfsplus_attr_build_key(struct super_block *sb, hfsplus_btree_key *key,
+ u32 cnid, const char *name)
+{
+ int len;
+
+ memset(key, 0, sizeof(struct hfsplus_attr_key));
+ key->attr.cnid = cpu_to_be32(cnid);
+ if (name) {
+ len = strlen(name);
+ if (len > HFSPLUS_ATTR_MAX_STRLEN) {
+ printk(KERN_ERR "hfs: invalid xattr name's length\n");
+ return -EINVAL;
+ }
+ hfsplus_asc2uni(sb,
+ (struct hfsplus_unistr *)&key->attr.key_name,
+ HFSPLUS_ATTR_MAX_STRLEN, name, len);
+ len = be16_to_cpu(key->attr.key_name.length);
+ } else {
+ key->attr.key_name.length = 0;
+ len = 0;
+ }
+
+ /* The length of the key, as stored in key_len field, does not include
+ * the size of the key_len field itself.
+ * So, offsetof(hfsplus_attr_key, key_name) is a trick because
+ * it takes into consideration key_len field (__be16) of
+ * hfsplus_attr_key structure instead of length field (__be16) of
+ * hfsplus_attr_unistr structure.
+ */
+ key->key_len =
+ cpu_to_be16(offsetof(struct hfsplus_attr_key, key_name) +
+ 2 * len);
+
+ return 0;
+}
+
+void hfsplus_attr_build_key_uni(hfsplus_btree_key *key,
+ u32 cnid,
+ struct hfsplus_attr_unistr *name)
+{
+ int ustrlen;
+
+ memset(key, 0, sizeof(struct hfsplus_attr_key));
+ ustrlen = be16_to_cpu(name->length);
+ key->attr.cnid = cpu_to_be32(cnid);
+ key->attr.key_name.length = cpu_to_be16(ustrlen);
+ ustrlen *= 2;
+ memcpy(key->attr.key_name.unicode, name->unicode, ustrlen);
+
+ /* The length of the key, as stored in key_len field, does not include
+ * the size of the key_len field itself.
+ * So, offsetof(hfsplus_attr_key, key_name) is a trick because
+ * it takes into consideration key_len field (__be16) of
+ * hfsplus_attr_key structure instead of length field (__be16) of
+ * hfsplus_attr_unistr structure.
+ */
+ key->key_len =
+ cpu_to_be16(offsetof(struct hfsplus_attr_key, key_name) +
+ ustrlen);
+}
+
+hfsplus_attr_entry *hfsplus_alloc_attr_entry(void)
+{
+ return kmem_cache_alloc(hfsplus_attr_tree_cachep, GFP_KERNEL);
+}
+
+void hfsplus_destroy_attr_entry(hfsplus_attr_entry *entry)
+{
+ if (entry)
+ kmem_cache_free(hfsplus_attr_tree_cachep, entry);
+}
+
+#define HFSPLUS_INVALID_ATTR_RECORD -1
+
+static int hfsplus_attr_build_record(hfsplus_attr_entry *entry, int record_type,
+ u32 cnid, const void *value, size_t size)
+{
+ if (record_type == HFSPLUS_ATTR_FORK_DATA) {
+ /*
+ * Mac OS X supports only inline data attributes.
+ * Do nothing
+ */
+ memset(entry, 0, sizeof(*entry));
+ return sizeof(struct hfsplus_attr_fork_data);
+ } else if (record_type == HFSPLUS_ATTR_EXTENTS) {
+ /*
+ * Mac OS X supports only inline data attributes.
+ * Do nothing.
+ */
+ memset(entry, 0, sizeof(*entry));
+ return sizeof(struct hfsplus_attr_extents);
+ } else if (record_type == HFSPLUS_ATTR_INLINE_DATA) {
+ u16 len;
+
+ memset(entry, 0, sizeof(struct hfsplus_attr_inline_data));
+ entry->inline_data.record_type = cpu_to_be32(record_type);
+ if (size <= HFSPLUS_MAX_INLINE_DATA_SIZE)
+ len = size;
+ else
+ return HFSPLUS_INVALID_ATTR_RECORD;
+ entry->inline_data.length = cpu_to_be16(len);
+ memcpy(entry->inline_data.raw_bytes, value, len);
+ /*
+ * Align len on two-byte boundary.
+ * It needs to add pad byte if we have odd len.
+ */
+ len = round_up(len, 2);
+ return offsetof(struct hfsplus_attr_inline_data, raw_bytes) +
+ len;
+ } else /* invalid input */
+ memset(entry, 0, sizeof(*entry));
+
+ return HFSPLUS_INVALID_ATTR_RECORD;
+}
+
+int hfsplus_find_attr(struct super_block *sb, u32 cnid,
+ const char *name, struct hfs_find_data *fd)
+{
+ int err = 0;
+
+ dprint(DBG_ATTR_MOD, "find_attr: %s,%d\n", name ? name : NULL, cnid);
+
+ if (!HFSPLUS_SB(sb)->attr_tree) {
+ printk(KERN_ERR "hfs: attributes file doesn't exist\n");
+ return -EINVAL;
+ }
+
+ if (name) {
+ err = hfsplus_attr_build_key(sb, fd->search_key, cnid, name);
+ if (err)
+ goto failed_find_attr;
+ err = hfs_brec_find(fd, hfs_find_rec_by_key);
+ if (err)
+ goto failed_find_attr;
+ } else {
+ err = hfsplus_attr_build_key(sb, fd->search_key, cnid, NULL);
+ if (err)
+ goto failed_find_attr;
+ err = hfs_brec_find(fd, hfs_find_1st_rec_by_cnid);
+ if (err)
+ goto failed_find_attr;
+ }
+
+failed_find_attr:
+ return err;
+}
+
+int hfsplus_attr_exists(struct inode *inode, const char *name)
+{
+ int err = 0;
+ struct super_block *sb = inode->i_sb;
+ struct hfs_find_data fd;
+
+ if (!HFSPLUS_SB(sb)->attr_tree)
+ return 0;
+
+ err = hfs_find_init(HFSPLUS_SB(sb)->attr_tree, &fd);
+ if (err)
+ return 0;
+
+ err = hfsplus_find_attr(sb, inode->i_ino, name, &fd);
+ if (err)
+ goto attr_not_found;
+
+ hfs_find_exit(&fd);
+ return 1;
+
+attr_not_found:
+ hfs_find_exit(&fd);
+ return 0;
+}
+
+int hfsplus_create_attr(struct inode *inode,
+ const char *name,
+ const void *value, size_t size)
+{
+ struct super_block *sb = inode->i_sb;
+ struct hfs_find_data fd;
+ hfsplus_attr_entry *entry_ptr;
+ int entry_size;
+ int err;
+
+ dprint(DBG_ATTR_MOD, "create_attr: %s,%ld\n",
+ name ? name : NULL, inode->i_ino);
+
+ if (!HFSPLUS_SB(sb)->attr_tree) {
+ printk(KERN_ERR "hfs: attributes file doesn't exist\n");
+ return -EINVAL;
+ }
+
+ entry_ptr = hfsplus_alloc_attr_entry();
+ if (!entry_ptr)
+ return -ENOMEM;
+
+ err = hfs_find_init(HFSPLUS_SB(sb)->attr_tree, &fd);
+ if (err)
+ goto failed_init_create_attr;
+
+ if (name) {
+ err = hfsplus_attr_build_key(sb, fd.search_key,
+ inode->i_ino, name);
+ if (err)
+ goto failed_create_attr;
+ } else {
+ err = -EINVAL;
+ goto failed_create_attr;
+ }
+
+ /* Mac OS X supports only inline data attributes. */
+ entry_size = hfsplus_attr_build_record(entry_ptr,
+ HFSPLUS_ATTR_INLINE_DATA,
+ inode->i_ino,
+ value, size);
+ if (entry_size == HFSPLUS_INVALID_ATTR_RECORD) {
+ err = -EINVAL;
+ goto failed_create_attr;
+ }
+
+ err = hfs_brec_find(&fd, hfs_find_rec_by_key);
+ if (err != -ENOENT) {
+ if (!err)
+ err = -EEXIST;
+ goto failed_create_attr;
+ }
+
+ err = hfs_brec_insert(&fd, entry_ptr, entry_size);
+ if (err)
+ goto failed_create_attr;
+
+ hfsplus_mark_inode_dirty(inode, HFSPLUS_I_ATTR_DIRTY);
+
+failed_create_attr:
+ hfs_find_exit(&fd);
+
+failed_init_create_attr:
+ hfsplus_destroy_attr_entry(entry_ptr);
+ return err;
+}
+
+static int __hfsplus_delete_attr(struct inode *inode, u32 cnid,
+ struct hfs_find_data *fd)
+{
+ int err = 0;
+ __be32 found_cnid, record_type;
+
+ hfs_bnode_read(fd->bnode, &found_cnid,
+ fd->keyoffset +
+ offsetof(struct hfsplus_attr_key, cnid),
+ sizeof(__be32));
+ if (cnid != be32_to_cpu(found_cnid))
+ return -ENOENT;
+
+ hfs_bnode_read(fd->bnode, &record_type,
+ fd->entryoffset, sizeof(record_type));
+
+ switch (be32_to_cpu(record_type)) {
+ case HFSPLUS_ATTR_INLINE_DATA:
+ /* All is OK. Do nothing. */
+ break;
+ case HFSPLUS_ATTR_FORK_DATA:
+ case HFSPLUS_ATTR_EXTENTS:
+ printk(KERN_ERR "hfs: only inline data xattr are supported\n");
+ return -EOPNOTSUPP;
+ default:
+ printk(KERN_ERR "hfs: invalid extended attribute record\n");
+ return -ENOENT;
+ }
+
+ err = hfs_brec_remove(fd);
+ if (err)
+ return err;
+
+ hfsplus_mark_inode_dirty(inode, HFSPLUS_I_ATTR_DIRTY);
+ return err;
+}
+
+int hfsplus_delete_attr(struct inode *inode, const char *name)
+{
+ int err = 0;
+ struct super_block *sb = inode->i_sb;
+ struct hfs_find_data fd;
+
+ dprint(DBG_ATTR_MOD, "delete_attr: %s,%ld\n",
+ name ? name : NULL, inode->i_ino);
+
+ if (!HFSPLUS_SB(sb)->attr_tree) {
+ printk(KERN_ERR "hfs: attributes file doesn't exist\n");
+ return -EINVAL;
+ }
+
+ err = hfs_find_init(HFSPLUS_SB(sb)->attr_tree, &fd);
+ if (err)
+ return err;
+
+ if (name) {
+ err = hfsplus_attr_build_key(sb, fd.search_key,
+ inode->i_ino, name);
+ if (err)
+ goto out;
+ } else {
+ printk(KERN_ERR "hfs: invalid extended attribute name\n");
+ err = -EINVAL;
+ goto out;
+ }
+
+ err = hfs_brec_find(&fd, hfs_find_rec_by_key);
+ if (err)
+ goto out;
+
+ err = __hfsplus_delete_attr(inode, inode->i_ino, &fd);
+ if (err)
+ goto out;
+
+out:
+ hfs_find_exit(&fd);
+ return err;
+}
+
+int hfsplus_delete_all_attrs(struct inode *dir, u32 cnid)
+{
+ int err = 0;
+ struct hfs_find_data fd;
+
+ dprint(DBG_ATTR_MOD, "delete_all_attrs: %d\n", cnid);
+
+ if (!HFSPLUS_SB(dir->i_sb)->attr_tree) {
+ printk(KERN_ERR "hfs: attributes file doesn't exist\n");
+ return -EINVAL;
+ }
+
+ err = hfs_find_init(HFSPLUS_SB(dir->i_sb)->attr_tree, &fd);
+ if (err)
+ return err;
+
+ for (;;) {
+ err = hfsplus_find_attr(dir->i_sb, cnid, NULL, &fd);
+ if (err) {
+ if (err != -ENOENT)
+ printk(KERN_ERR "hfs: xattr search failed.\n");
+ goto end_delete_all;
+ }
+
+ err = __hfsplus_delete_attr(dir, cnid, &fd);
+ if (err)
+ goto end_delete_all;
+ }
+
+end_delete_all:
+ hfs_find_exit(&fd);
+ return err;
+}
diff --git a/fs/hfsplus/bfind.c b/fs/hfsplus/bfind.c
index 5d799c13205..d73c98d1ee9 100644
--- a/fs/hfsplus/bfind.c
+++ b/fs/hfsplus/bfind.c
@@ -24,7 +24,19 @@ int hfs_find_init(struct hfs_btree *tree, struct hfs_find_data *fd)
fd->key = ptr + tree->max_key_len + 2;
dprint(DBG_BNODE_REFS, "find_init: %d (%p)\n",
tree->cnid, __builtin_return_address(0));
- mutex_lock(&tree->tree_lock);
+ switch (tree->cnid) {
+ case HFSPLUS_CAT_CNID:
+ mutex_lock_nested(&tree->tree_lock, CATALOG_BTREE_MUTEX);
+ break;
+ case HFSPLUS_EXT_CNID:
+ mutex_lock_nested(&tree->tree_lock, EXTENTS_BTREE_MUTEX);
+ break;
+ case HFSPLUS_ATTR_CNID:
+ mutex_lock_nested(&tree->tree_lock, ATTR_BTREE_MUTEX);
+ break;
+ default:
+ BUG();
+ }
return 0;
}
@@ -38,15 +50,73 @@ 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 +129,12 @@ 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 +144,21 @@ 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 +189,7 @@ 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 +216,7 @@ 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 1c42cc5b899..f31ac6f404f 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;
@@ -646,6 +648,8 @@ void hfs_bnode_put(struct hfs_bnode *node)
if (test_bit(HFS_BNODE_DELETED, &node->flags)) {
hfs_bnode_unhash(node);
spin_unlock(&tree->hash_lock);
+ hfs_bnode_clear(node, 0,
+ PAGE_CACHE_SIZE * tree->pages_per_bnode);
hfs_bmap_free(node);
hfs_bnode_free(node);
return;
diff --git a/fs/hfsplus/brec.c b/fs/hfsplus/brec.c
index 2a734cfccc9..298d4e45604 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 685d07d0ed1..efb689c21a9 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 798d9c4c5e7..840d71edd19 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 074e0458924..031c24e5052 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -15,6 +15,7 @@
#include "hfsplus_fs.h"
#include "hfsplus_raw.h"
+#include "xattr.h"
static inline void hfsplus_instantiate(struct dentry *dentry,
struct inode *inode, u32 cnid)
@@ -138,7 +139,7 @@ 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;
@@ -421,6 +422,15 @@ static int hfsplus_symlink(struct inode *dir, struct dentry *dentry,
if (res)
goto out_err;
+ res = hfsplus_init_inode_security(inode, dir, &dentry->d_name);
+ if (res == -EOPNOTSUPP)
+ res = 0; /* Operation is not supported. */
+ else if (res) {
+ /* Try to delete anyway without error analysis. */
+ hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name);
+ goto out_err;
+ }
+
hfsplus_instantiate(dentry, inode, inode->i_ino);
mark_inode_dirty(inode);
goto out;
@@ -450,15 +460,26 @@ static int hfsplus_mknod(struct inode *dir, struct dentry *dentry,
init_special_inode(inode, mode, rdev);
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
- if (res) {
- clear_nlink(inode);
- hfsplus_delete_inode(inode);
- iput(inode);
- goto out;
+ if (res)
+ goto failed_mknod;
+
+ res = hfsplus_init_inode_security(inode, dir, &dentry->d_name);
+ if (res == -EOPNOTSUPP)
+ res = 0; /* Operation is not supported. */
+ else if (res) {
+ /* Try to delete anyway without error analysis. */
+ hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name);
+ goto failed_mknod;
}
hfsplus_instantiate(dentry, inode, inode->i_ino);
mark_inode_dirty(inode);
+ goto out;
+
+failed_mknod:
+ clear_nlink(inode);
+ hfsplus_delete_inode(inode);
+ iput(inode);
out:
mutex_unlock(&sbi->vh_mutex);
return res;
@@ -499,15 +520,19 @@ 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 = generic_setxattr,
+ .getxattr = generic_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 eba76eab6d6..a94f0f779d5 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 a6da86b1b4c..05b11f36024 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)
@@ -46,6 +47,13 @@ typedef int (*btree_keycmp)(const hfsplus_btree_key *,
#define NODE_HASH_SIZE 256
+/* B-tree mutex nested subclasses */
+enum hfsplus_btree_mutex_classes {
+ CATALOG_BTREE_MUTEX,
+ EXTENTS_BTREE_MUTEX,
+ ATTR_BTREE_MUTEX,
+};
+
/* An HFS+ BTree held in memory */
struct hfs_btree {
struct super_block *sb;
@@ -223,6 +231,7 @@ 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 +311,7 @@ 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 +333,33 @@ 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 +401,15 @@ 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);
@@ -417,11 +456,6 @@ int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
/* ioctl.c */
long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
-int hfsplus_setxattr(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags);
-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);
/* options.c */
int hfsplus_parse_options(char *, struct hfsplus_sb_info *);
@@ -446,7 +480,7 @@ 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/hfsplus_raw.h b/fs/hfsplus/hfsplus_raw.h
index 921967e5abb..452ede01b03 100644
--- a/fs/hfsplus/hfsplus_raw.h
+++ b/fs/hfsplus/hfsplus_raw.h
@@ -52,13 +52,23 @@
typedef __be32 hfsplus_cnid;
typedef __be16 hfsplus_unichr;
+#define HFSPLUS_MAX_STRLEN 255
+#define HFSPLUS_ATTR_MAX_STRLEN 127
+
/* A "string" as used in filenames, etc. */
struct hfsplus_unistr {
__be16 length;
- hfsplus_unichr unicode[255];
+ hfsplus_unichr unicode[HFSPLUS_MAX_STRLEN];
} __packed;
-#define HFSPLUS_MAX_STRLEN 255
+/*
+ * A "string" is used in attributes file
+ * for name of extended attribute
+ */
+struct hfsplus_attr_unistr {
+ __be16 length;
+ hfsplus_unichr unicode[HFSPLUS_ATTR_MAX_STRLEN];
+} __packed;
/* POSIX permissions */
struct hfsplus_perm {
@@ -291,6 +301,8 @@ struct hfsplus_cat_file {
/* File attribute bits */
#define HFSPLUS_FILE_LOCKED 0x0001
#define HFSPLUS_FILE_THREAD_EXISTS 0x0002
+#define HFSPLUS_XATTR_EXISTS 0x0004
+#define HFSPLUS_ACL_EXISTS 0x0008
/* HFS+ catalog thread (part of a cat_entry) */
struct hfsplus_cat_thread {
@@ -327,11 +339,63 @@ struct hfsplus_ext_key {
#define HFSPLUS_EXT_KEYLEN sizeof(struct hfsplus_ext_key)
+#define HFSPLUS_XATTR_FINDER_INFO_NAME "com.apple.FinderInfo"
+#define HFSPLUS_XATTR_ACL_NAME "com.apple.system.Security"
+
+#define HFSPLUS_ATTR_INLINE_DATA 0x10
+#define HFSPLUS_ATTR_FORK_DATA 0x20
+#define HFSPLUS_ATTR_EXTENTS 0x30
+
+/* HFS+ attributes tree key */
+struct hfsplus_attr_key {
+ __be16 key_len;
+ __be16 pad;
+ hfsplus_cnid cnid;
+ __be32 start_block;
+ struct hfsplus_attr_unistr key_name;
+} __packed;
+
+#define HFSPLUS_ATTR_KEYLEN sizeof(struct hfsplus_attr_key)
+
+/* HFS+ fork data attribute */
+struct hfsplus_attr_fork_data {
+ __be32 record_type;
+ __be32 reserved;
+ struct hfsplus_fork_raw the_fork;
+} __packed;
+
+/* HFS+ extension attribute */
+struct hfsplus_attr_extents {
+ __be32 record_type;
+ __be32 reserved;
+ struct hfsplus_extent extents;
+} __packed;
+
+#define HFSPLUS_MAX_INLINE_DATA_SIZE 3802
+
+/* HFS+ attribute inline data */
+struct hfsplus_attr_inline_data {
+ __be32 record_type;
+ __be32 reserved1;
+ u8 reserved2[6];
+ __be16 length;
+ u8 raw_bytes[HFSPLUS_MAX_INLINE_DATA_SIZE];
+} __packed;
+
+/* A data record in the attributes tree */
+typedef union {
+ __be32 record_type;
+ struct hfsplus_attr_fork_data fork_data;
+ struct hfsplus_attr_extents extents;
+ struct hfsplus_attr_inline_data inline_data;
+} __packed hfsplus_attr_entry;
+
/* HFS+ generic BTree key */
typedef union {
__be16 key_len;
struct hfsplus_cat_key cat;
struct hfsplus_ext_key ext;
+ struct hfsplus_attr_key attr;
} __packed hfsplus_btree_key;
#endif
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index dcd05be5344..160ccc9cdb4 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -17,6 +17,7 @@
#include "hfsplus_fs.h"
#include "hfsplus_raw.h"
+#include "xattr.h"
static int hfsplus_readpage(struct file *file, struct page *page)
{
@@ -348,6 +349,18 @@ 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)
@@ -365,9 +378,10 @@ int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
static const struct inode_operations hfsplus_file_inode_operations = {
.lookup = hfsplus_file_lookup,
.setattr = hfsplus_setattr,
- .setxattr = hfsplus_setxattr,
- .getxattr = hfsplus_getxattr,
+ .setxattr = generic_setxattr,
+ .getxattr = generic_getxattr,
.listxattr = hfsplus_listxattr,
+ .removexattr = hfsplus_removexattr,
};
static const struct file_operations hfsplus_file_operations = {
diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c
index e3c4c420942..d3ff5cc317d 100644
--- a/fs/hfsplus/ioctl.c
+++ b/fs/hfsplus/ioctl.c
@@ -16,7 +16,6 @@
#include <linux/fs.h>
#include <linux/mount.h>
#include <linux/sched.h>
-#include <linux/xattr.h>
#include <asm/uaccess.h>
#include "hfsplus_fs.h"
@@ -151,110 +150,3 @@ long hfsplus_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return -ENOTTY;
}
}
-
-int hfsplus_setxattr(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags)
-{
- struct inode *inode = dentry->d_inode;
- struct hfs_find_data fd;
- hfsplus_cat_entry entry;
- struct hfsplus_cat_file *file;
- int res;
-
- if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode))
- return -EOPNOTSUPP;
-
- 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);
- if (res)
- goto out;
- hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
- sizeof(struct hfsplus_cat_file));
- file = &entry.file;
-
- if (!strcmp(name, "hfs.type")) {
- if (size == 4)
- memcpy(&file->user_info.fdType, value, 4);
- else
- res = -ERANGE;
- } else if (!strcmp(name, "hfs.creator")) {
- if (size == 4)
- memcpy(&file->user_info.fdCreator, value, 4);
- else
- res = -ERANGE;
- } else
- res = -EOPNOTSUPP;
- if (!res) {
- hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
- sizeof(struct hfsplus_cat_file));
- hfsplus_mark_inode_dirty(inode, HFSPLUS_I_CAT_DIRTY);
- }
-out:
- hfs_find_exit(&fd);
- return res;
-}
-
-ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
- void *value, size_t size)
-{
- struct inode *inode = dentry->d_inode;
- struct hfs_find_data fd;
- hfsplus_cat_entry entry;
- struct hfsplus_cat_file *file;
- ssize_t res = 0;
-
- if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode))
- return -EOPNOTSUPP;
-
- if (size) {
- 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);
- if (res)
- goto out;
- hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
- sizeof(struct hfsplus_cat_file));
- }
- file = &entry.file;
-
- if (!strcmp(name, "hfs.type")) {
- if (size >= 4) {
- memcpy(value, &file->user_info.fdType, 4);
- res = 4;
- } else
- res = size ? -ERANGE : 4;
- } else if (!strcmp(name, "hfs.creator")) {
- if (size >= 4) {
- memcpy(value, &file->user_info.fdCreator, 4);
- res = 4;
- } else
- res = size ? -ERANGE : 4;
- } else
- res = -EOPNOTSUPP;
-out:
- if (size)
- hfs_find_exit(&fd);
- return res;
-}
-
-#define HFSPLUS_ATTRLIST_SIZE (sizeof("hfs.creator")+sizeof("hfs.type"))
-
-ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size)
-{
- struct inode *inode = dentry->d_inode;
-
- if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode))
- return -EOPNOTSUPP;
-
- if (!buffer || !size)
- return HFSPLUS_ATTRLIST_SIZE;
- if (size < HFSPLUS_ATTRLIST_SIZE)
- return -ERANGE;
- strcpy(buffer, "hfs.type");
- strcpy(buffer + sizeof("hfs.type"), "hfs.creator");
-
- return HFSPLUS_ATTRLIST_SIZE;
-}
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 796198d2655..974c26f96fa 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -20,6 +20,7 @@ static struct inode *hfsplus_alloc_inode(struct super_block *sb);
static void hfsplus_destroy_inode(struct inode *inode);
#include "hfsplus_fs.h"
+#include "xattr.h"
static int hfsplus_system_read_inode(struct inode *inode)
{
@@ -118,6 +119,7 @@ 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;
}
@@ -191,6 +193,12 @@ 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;
@@ -281,6 +289,7 @@ 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);
@@ -477,12 +486,20 @@ 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;
+ }
+ }
+ sb->s_xattr = hfsplus_xattr_handlers;
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;
@@ -542,10 +559,27 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
}
err = hfsplus_create_cat(sbi->hidden_dir->i_ino, root,
&str, sbi->hidden_dir);
- mutex_unlock(&sbi->vh_mutex);
- if (err)
+ if (err) {
+ mutex_unlock(&sbi->vh_mutex);
+ goto out_put_hidden_dir;
+ }
+
+ err = hfsplus_init_inode_security(sbi->hidden_dir,
+ root, &str);
+ if (err == -EOPNOTSUPP)
+ err = 0; /* Operation is not supported. */
+ else if (err) {
+ /*
+ * Try to delete anyway without
+ * error analysis.
+ */
+ hfsplus_delete_cat(sbi->hidden_dir->i_ino,
+ root, &str);
+ mutex_unlock(&sbi->vh_mutex);
goto out_put_hidden_dir;
+ }
+ mutex_unlock(&sbi->vh_mutex);
hfsplus_mark_inode_dirty(sbi->hidden_dir,
HFSPLUS_I_CAT_DIRTY);
}
@@ -562,6 +596,8 @@ 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:
@@ -635,9 +671,20 @@ 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;
}
@@ -650,6 +697,7 @@ 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 a32998f29f0..2c2e47dcfdd 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++);
diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c
new file mode 100644
index 00000000000..e8a4b0815c6
--- /dev/null
+++ b/fs/hfsplus/xattr.c
@@ -0,0 +1,709 @@
+/*
+ * linux/fs/hfsplus/xattr.c
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Logic of processing extended attributes
+ */
+
+#include "hfsplus_fs.h"
+#include "xattr.h"
+
+const struct xattr_handler *hfsplus_xattr_handlers[] = {
+ &hfsplus_xattr_osx_handler,
+ &hfsplus_xattr_user_handler,
+ &hfsplus_xattr_trusted_handler,
+ &hfsplus_xattr_security_handler,
+ NULL
+};
+
+static int strcmp_xattr_finder_info(const char *name)
+{
+ if (name) {
+ return strncmp(name, HFSPLUS_XATTR_FINDER_INFO_NAME,
+ sizeof(HFSPLUS_XATTR_FINDER_INFO_NAME));
+ }
+ return -1;
+}
+
+static int strcmp_xattr_acl(const char *name)
+{
+ if (name) {
+ return strncmp(name, HFSPLUS_XATTR_ACL_NAME,
+ sizeof(HFSPLUS_XATTR_ACL_NAME));
+ }
+ return -1;
+}
+
+static inline int is_known_namespace(const char *name)
+{
+ if (strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN) &&
+ strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) &&
+ strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) &&
+ strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN))
+ return false;
+
+ return true;
+}
+
+static int can_set_xattr(struct inode *inode, const char *name,
+ const void *value, size_t value_len)
+{
+ if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN))
+ return -EOPNOTSUPP; /* TODO: implement ACL support */
+
+ if (!strncmp(name, XATTR_MAC_OSX_PREFIX, XATTR_MAC_OSX_PREFIX_LEN)) {
+ /*
+ * This makes sure that we aren't trying to set an
+ * attribute in a different namespace by prefixing it
+ * with "osx."
+ */
+ if (is_known_namespace(name + XATTR_MAC_OSX_PREFIX_LEN))
+ return -EOPNOTSUPP;
+
+ return 0;
+ }
+
+ /*
+ * Don't allow setting an attribute in an unknown namespace.
+ */
+ if (strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) &&
+ strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) &&
+ strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
+ return -EOPNOTSUPP;
+
+ return 0;
+}
+
+int __hfsplus_setxattr(struct inode *inode, const char *name,
+ const void *value, size_t size, int flags)
+{
+ int err = 0;
+ struct hfs_find_data cat_fd;
+ hfsplus_cat_entry entry;
+ u16 cat_entry_flags, cat_entry_type;
+ u16 folder_finderinfo_len = sizeof(struct DInfo) +
+ sizeof(struct DXInfo);
+ u16 file_finderinfo_len = sizeof(struct FInfo) +
+ sizeof(struct FXInfo);
+
+ if ((!S_ISREG(inode->i_mode) &&
+ !S_ISDIR(inode->i_mode)) ||
+ HFSPLUS_IS_RSRC(inode))
+ return -EOPNOTSUPP;
+
+ err = can_set_xattr(inode, name, value, size);
+ if (err)
+ return err;
+
+ if (strncmp(name, XATTR_MAC_OSX_PREFIX,
+ XATTR_MAC_OSX_PREFIX_LEN) == 0)
+ name += XATTR_MAC_OSX_PREFIX_LEN;
+
+ if (value == NULL) {
+ value = "";
+ size = 0;
+ }
+
+ err = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &cat_fd);
+ if (err) {
+ printk(KERN_ERR "hfs: can't init xattr find struct\n");
+ return err;
+ }
+
+ err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &cat_fd);
+ if (err) {
+ printk(KERN_ERR "hfs: catalog searching failed\n");
+ goto end_setxattr;
+ }
+
+ if (!strcmp_xattr_finder_info(name)) {
+ if (flags & XATTR_CREATE) {
+ printk(KERN_ERR "hfs: xattr exists yet\n");
+ err = -EOPNOTSUPP;
+ goto end_setxattr;
+ }
+ hfs_bnode_read(cat_fd.bnode, &entry, cat_fd.entryoffset,
+ sizeof(hfsplus_cat_entry));
+ if (be16_to_cpu(entry.type) == HFSPLUS_FOLDER) {
+ if (size == folder_finderinfo_len) {
+ memcpy(&entry.folder.user_info, value,
+ folder_finderinfo_len);
+ hfs_bnode_write(cat_fd.bnode, &entry,
+ cat_fd.entryoffset,
+ sizeof(struct hfsplus_cat_folder));
+ hfsplus_mark_inode_dirty(inode,
+ HFSPLUS_I_CAT_DIRTY);
+ } else {
+ err = -ERANGE;
+ goto end_setxattr;
+ }
+ } else if (be16_to_cpu(entry.type) == HFSPLUS_FILE) {
+ if (size == file_finderinfo_len) {
+ memcpy(&entry.file.user_info, value,
+ file_finderinfo_len);
+ hfs_bnode_write(cat_fd.bnode, &entry,
+ cat_fd.entryoffset,
+ sizeof(struct hfsplus_cat_file));
+ hfsplus_mark_inode_dirty(inode,
+ HFSPLUS_I_CAT_DIRTY);
+ } else {
+ err = -ERANGE;
+ goto end_setxattr;
+ }
+ } else {
+ err = -EOPNOTSUPP;
+ goto end_setxattr;
+ }
+ goto end_setxattr;
+ }
+
+ if (!HFSPLUS_SB(inode->i_sb)->attr_tree) {
+ err = -EOPNOTSUPP;
+ goto end_setxattr;
+ }
+
+ if (hfsplus_attr_exists(inode, name)) {
+ if (flags & XATTR_CREATE) {
+ printk(KERN_ERR "hfs: xattr exists yet\n");
+ err = -EOPNOTSUPP;
+ goto end_setxattr;
+ }
+ err = hfsplus_delete_attr(inode, name);
+ if (err)
+ goto end_setxattr;
+ err = hfsplus_create_attr(inode, name, value, size);
+ if (err)
+ goto end_setxattr;
+ } else {
+ if (flags & XATTR_REPLACE) {
+ printk(KERN_ERR "hfs: cannot replace xattr\n");
+ err = -EOPNOTSUPP;
+ goto end_setxattr;
+ }
+ err = hfsplus_create_attr(inode, name, value, size);
+ if (err)
+ goto end_setxattr;
+ }
+
+ cat_entry_type = hfs_bnode_read_u16(cat_fd.bnode, cat_fd.entryoffset);
+ if (cat_entry_type == HFSPLUS_FOLDER) {
+ cat_entry_flags = hfs_bnode_read_u16(cat_fd.bnode,
+ cat_fd.entryoffset +
+ offsetof(struct hfsplus_cat_folder, flags));
+ cat_entry_flags |= HFSPLUS_XATTR_EXISTS;
+ if (!strcmp_xattr_acl(name))
+ cat_entry_flags |= HFSPLUS_ACL_EXISTS;
+ hfs_bnode_write_u16(cat_fd.bnode, cat_fd.entryoffset +
+ offsetof(struct hfsplus_cat_folder, flags),
+ cat_entry_flags);
+ hfsplus_mark_inode_dirty(inode, HFSPLUS_I_CAT_DIRTY);
+ } else if (cat_entry_type == HFSPLUS_FILE) {
+ cat_entry_flags = hfs_bnode_read_u16(cat_fd.bnode,
+ cat_fd.entryoffset +
+ offsetof(struct hfsplus_cat_file, flags));
+ cat_entry_flags |= HFSPLUS_XATTR_EXISTS;
+ if (!strcmp_xattr_acl(name))
+ cat_entry_flags |= HFSPLUS_ACL_EXISTS;
+ hfs_bnode_write_u16(cat_fd.bnode, cat_fd.entryoffset +
+ offsetof(struct hfsplus_cat_file, flags),
+ cat_entry_flags);
+ hfsplus_mark_inode_dirty(inode, HFSPLUS_I_CAT_DIRTY);
+ } else {
+ printk(KERN_ERR "hfs: invalid catalog entry type\n");
+ err = -EIO;
+ goto end_setxattr;
+ }
+
+end_setxattr:
+ hfs_find_exit(&cat_fd);
+ return err;
+}
+
+static inline int is_osx_xattr(const char *xattr_name)
+{
+ return !is_known_namespace(xattr_name);
+}
+
+static int name_len(const char *xattr_name, int xattr_name_len)
+{
+ int len = xattr_name_len + 1;
+
+ if (is_osx_xattr(xattr_name))
+ len += XATTR_MAC_OSX_PREFIX_LEN;
+
+ return len;
+}
+
+static int copy_name(char *buffer, const char *xattr_name, int name_len)
+{
+ int len = name_len;
+ int offset = 0;
+
+ if (is_osx_xattr(xattr_name)) {
+ strncpy(buffer, XATTR_MAC_OSX_PREFIX, XATTR_MAC_OSX_PREFIX_LEN);
+ offset += XATTR_MAC_OSX_PREFIX_LEN;
+ len += XATTR_MAC_OSX_PREFIX_LEN;
+ }
+
+ strncpy(buffer + offset, xattr_name, name_len);
+ memset(buffer + offset + name_len, 0, 1);
+ len += 1;
+
+ return len;
+}
+
+static ssize_t hfsplus_getxattr_finder_info(struct dentry *dentry,
+ void *value, size_t size)
+{
+ ssize_t res = 0;
+ struct inode *inode = dentry->d_inode;
+ struct hfs_find_data fd;
+ u16 entry_type;
+ u16 folder_rec_len = sizeof(struct DInfo) + sizeof(struct DXInfo);
+ u16 file_rec_len = sizeof(struct FInfo) + sizeof(struct FXInfo);
+ u16 record_len = max(folder_rec_len, file_rec_len);
+ u8 folder_finder_info[sizeof(struct DInfo) + sizeof(struct DXInfo)];
+ u8 file_finder_info[sizeof(struct FInfo) + sizeof(struct FXInfo)];
+
+ if (size >= record_len) {
+ res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);
+ if (res) {
+ printk(KERN_ERR "hfs: can't init xattr find struct\n");
+ return res;
+ }
+ res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
+ if (res)
+ goto end_getxattr_finder_info;
+ entry_type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset);
+
+ if (entry_type == HFSPLUS_FOLDER) {
+ hfs_bnode_read(fd.bnode, folder_finder_info,
+ fd.entryoffset +
+ offsetof(struct hfsplus_cat_folder, user_info),
+ folder_rec_len);
+ memcpy(value, folder_finder_info, folder_rec_len);
+ res = folder_rec_len;
+ } else if (entry_type == HFSPLUS_FILE) {
+ hfs_bnode_read(fd.bnode, file_finder_info,
+ fd.entryoffset +
+ offsetof(struct hfsplus_cat_file, user_info),
+ file_rec_len);
+ memcpy(value, file_finder_info, file_rec_len);
+ res = file_rec_len;
+ } else {
+ res = -EOPNOTSUPP;
+ goto end_getxattr_finder_info;
+ }
+ } else
+ res = size ? -ERANGE : record_len;
+
+end_getxattr_finder_info:
+ if (size >= record_len)
+ hfs_find_exit(&fd);
+ return res;
+}
+
+ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
+ void *value, size_t size)
+{
+ struct inode *inode = dentry->d_inode;
+ struct hfs_find_data fd;
+ hfsplus_attr_entry *entry;
+ __be32 xattr_record_type;
+ u32 record_type;
+ u16 record_length = 0;
+ ssize_t res = 0;
+
+ if ((!S_ISREG(inode->i_mode) &&
+ !S_ISDIR(inode->i_mode)) ||
+ HFSPLUS_IS_RSRC(inode))
+ return -EOPNOTSUPP;
+
+ if (strncmp(name, XATTR_MAC_OSX_PREFIX,
+ XATTR_MAC_OSX_PREFIX_LEN) == 0) {
+ /* skip "osx." prefix */
+ name += XATTR_MAC_OSX_PREFIX_LEN;
+ /*
+ * Don't allow retrieving properly prefixed attributes
+ * by prepending them with "osx."
+ */
+ if (is_known_namespace(name))
+ return -EOPNOTSUPP;
+ }
+
+ if (!strcmp_xattr_finder_info(name))
+ return hfsplus_getxattr_finder_info(dentry, value, size);
+
+ if (!HFSPLUS_SB(inode->i_sb)->attr_tree)
+ return -EOPNOTSUPP;
+
+ entry = hfsplus_alloc_attr_entry();
+ if (!entry) {
+ printk(KERN_ERR "hfs: can't allocate xattr entry\n");
+ return -ENOMEM;
+ }
+
+ res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->attr_tree, &fd);
+ if (res) {
+ printk(KERN_ERR "hfs: can't init xattr find struct\n");
+ goto failed_getxattr_init;
+ }
+
+ res = hfsplus_find_attr(inode->i_sb, inode->i_ino, name, &fd);
+ if (res) {
+ if (res == -ENOENT)
+ res = -ENODATA;
+ else
+ printk(KERN_ERR "hfs: xattr searching failed\n");
+ goto out;
+ }
+
+ hfs_bnode_read(fd.bnode, &xattr_record_type,
+ fd.entryoffset, sizeof(xattr_record_type));
+ record_type = be32_to_cpu(xattr_record_type);
+ if (record_type == HFSPLUS_ATTR_INLINE_DATA) {
+ record_length = hfs_bnode_read_u16(fd.bnode,
+ fd.entryoffset +
+ offsetof(struct hfsplus_attr_inline_data,
+ length));
+ if (record_length > HFSPLUS_MAX_INLINE_DATA_SIZE) {
+ printk(KERN_ERR "hfs: invalid xattr record size\n");
+ res = -EIO;
+ goto out;
+ }
+ } else if (record_type == HFSPLUS_ATTR_FORK_DATA ||
+ record_type == HFSPLUS_ATTR_EXTENTS) {
+ printk(KERN_ERR "hfs: only inline data xattr are supported\n");
+ res = -EOPNOTSUPP;
+ goto out;
+ } else {
+ printk(KERN_ERR "hfs: invalid xattr record\n");
+ res = -EIO;
+ goto out;
+ }
+
+ if (size) {
+ hfs_bnode_read(fd.bnode, entry, fd.entryoffset,
+ offsetof(struct hfsplus_attr_inline_data,
+ raw_bytes) + record_length);
+ }
+
+ if (size >= record_length) {
+ memcpy(value, entry->inline_data.raw_bytes, record_length);
+ res = record_length;
+ } else
+ res = size ? -ERANGE : record_length;
+
+out:
+ hfs_find_exit(&fd);
+
+failed_getxattr_init:
+ hfsplus_destroy_attr_entry(entry);
+ return res;
+}
+
+static inline int can_list(const char *xattr_name)
+{
+ if (!xattr_name)
+ return 0;
+
+ return strncmp(xattr_name, XATTR_TRUSTED_PREFIX,
+ XATTR_TRUSTED_PREFIX_LEN) ||
+ capable(CAP_SYS_ADMIN);
+}
+
+static ssize_t hfsplus_listxattr_finder_info(struct dentry *dentry,
+ char *buffer, size_t size)
+{
+ ssize_t res = 0;
+ struct inode *inode = dentry->d_inode;
+ struct hfs_find_data fd;
+ u16 entry_type;
+ u8 folder_finder_info[sizeof(struct DInfo) + sizeof(struct DXInfo)];
+ u8 file_finder_info[sizeof(struct FInfo) + sizeof(struct FXInfo)];
+ unsigned long len, found_bit;
+ int xattr_name_len, symbols_count;
+
+ res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);
+ if (res) {
+ printk(KERN_ERR "hfs: can't init xattr find struct\n");
+ return res;
+ }
+
+ res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
+ if (res)
+ goto end_listxattr_finder_info;
+
+ entry_type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset);
+ if (entry_type == HFSPLUS_FOLDER) {
+ len = sizeof(struct DInfo) + sizeof(struct DXInfo);
+ hfs_bnode_read(fd.bnode, folder_finder_info,
+ fd.entryoffset +
+ offsetof(struct hfsplus_cat_folder, user_info),
+ len);
+ found_bit = find_first_bit((void *)folder_finder_info, len*8);
+ } else if (entry_type == HFSPLUS_FILE) {
+ len = sizeof(struct FInfo) + sizeof(struct FXInfo);
+ hfs_bnode_read(fd.bnode, file_finder_info,
+ fd.entryoffset +
+ offsetof(struct hfsplus_cat_file, user_info),
+ len);
+ found_bit = find_first_bit((void *)file_finder_info, len*8);
+ } else {
+ res = -EOPNOTSUPP;
+ goto end_listxattr_finder_info;
+ }
+
+ if (found_bit >= (len*8))
+ res = 0;
+ else {
+ symbols_count = sizeof(HFSPLUS_XATTR_FINDER_INFO_NAME) - 1;
+ xattr_name_len =
+ name_len(HFSPLUS_XATTR_FINDER_INFO_NAME, symbols_count);
+ if (!buffer || !size) {
+ if (can_list(HFSPLUS_XATTR_FINDER_INFO_NAME))
+ res = xattr_name_len;
+ } else if (can_list(HFSPLUS_XATTR_FINDER_INFO_NAME)) {
+ if (size < xattr_name_len)
+ res = -ERANGE;
+ else {
+ res = copy_name(buffer,
+ HFSPLUS_XATTR_FINDER_INFO_NAME,
+ symbols_count);
+ }
+ }
+ }
+
+end_listxattr_finder_info:
+ hfs_find_exit(&fd);
+
+ return res;
+}
+
+ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size)
+{
+ ssize_t err;
+ ssize_t res = 0;
+ struct inode *inode = dentry->d_inode;
+ struct hfs_find_data fd;
+ u16 key_len = 0;
+ struct hfsplus_attr_key attr_key;
+ char strbuf[HFSPLUS_ATTR_MAX_STRLEN +
+ XATTR_MAC_OSX_PREFIX_LEN + 1] = {0};
+ int xattr_name_len;
+
+ if ((!S_ISREG(inode->i_mode) &&
+ !S_ISDIR(inode->i_mode)) ||
+ HFSPLUS_IS_RSRC(inode))
+ return -EOPNOTSUPP;
+
+ res = hfsplus_listxattr_finder_info(dentry, buffer, size);
+ if (res < 0)
+ return res;
+ else if (!HFSPLUS_SB(inode->i_sb)->attr_tree)
+ return (res == 0) ? -EOPNOTSUPP : res;
+
+ err = hfs_find_init(HFSPLUS_SB(inode->i_sb)->attr_tree, &fd);
+ if (err) {
+ printk(KERN_ERR "hfs: can't init xattr find struct\n");
+ return err;
+ }
+
+ err = hfsplus_find_attr(inode->i_sb, inode->i_ino, NULL, &fd);
+ if (err) {
+ if (err == -ENOENT) {
+ if (res == 0)
+ res = -ENODATA;
+ goto end_listxattr;
+ } else {
+ res = err;
+ goto end_listxattr;
+ }
+ }
+
+ for (;;) {
+ key_len = hfs_bnode_read_u16(fd.bnode, fd.keyoffset);
+ if (key_len == 0 || key_len > fd.tree->max_key_len) {
+ printk(KERN_ERR "hfs: invalid xattr key length: %d\n",
+ key_len);
+ res = -EIO;
+ goto end_listxattr;
+ }
+
+ hfs_bnode_read(fd.bnode, &attr_key,
+ fd.keyoffset, key_len + sizeof(key_len));
+
+ if (be32_to_cpu(attr_key.cnid) != inode->i_ino)
+ goto end_listxattr;
+
+ xattr_name_len = HFSPLUS_ATTR_MAX_STRLEN;
+ if (hfsplus_uni2asc(inode->i_sb,
+ (const struct hfsplus_unistr *)&fd.key->attr.key_name,
+ strbuf, &xattr_name_len)) {
+ printk(KERN_ERR "hfs: unicode conversion failed\n");
+ res = -EIO;
+ goto end_listxattr;
+ }
+
+ if (!buffer || !size) {
+ if (can_list(strbuf))
+ res += name_len(strbuf, xattr_name_len);
+ } else if (can_list(strbuf)) {
+ if (size < (res + name_len(strbuf, xattr_name_len))) {
+ res = -ERANGE;
+ goto end_listxattr;
+ } else
+ res += copy_name(buffer + res,
+ strbuf, xattr_name_len);
+ }
+
+ if (hfs_brec_goto(&fd, 1))
+ goto end_listxattr;
+ }
+
+end_listxattr:
+ hfs_find_exit(&fd);
+ return res;
+}
+
+int hfsplus_removexattr(struct dentry *dentry, const char *name)
+{
+ int err = 0;
+ struct inode *inode = dentry->d_inode;
+ struct hfs_find_data cat_fd;
+ u16 flags;
+ u16 cat_entry_type;
+ int is_xattr_acl_deleted = 0;
+ int is_all_xattrs_deleted = 0;
+
+ if ((!S_ISREG(inode->i_mode) &&
+ !S_ISDIR(inode->i_mode)) ||
+ HFSPLUS_IS_RSRC(inode))
+ return -EOPNOTSUPP;
+
+ if (!HFSPLUS_SB(inode->i_sb)->attr_tree)
+ return -EOPNOTSUPP;
+
+ err = can_set_xattr(inode, name, NULL, 0);
+ if (err)
+ return err;
+
+ if (strncmp(name, XATTR_MAC_OSX_PREFIX,
+ XATTR_MAC_OSX_PREFIX_LEN) == 0)
+ name += XATTR_MAC_OSX_PREFIX_LEN;
+
+ if (!strcmp_xattr_finder_info(name))
+ return -EOPNOTSUPP;
+
+ err = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &cat_fd);
+ if (err) {
+ printk(KERN_ERR "hfs: can't init xattr find struct\n");
+ return err;
+ }
+
+ err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &cat_fd);
+ if (err) {
+ printk(KERN_ERR "hfs: catalog searching failed\n");
+ goto end_removexattr;
+ }
+
+ err = hfsplus_delete_attr(inode, name);
+ if (err)
+ goto end_removexattr;
+
+ is_xattr_acl_deleted = !strcmp_xattr_acl(name);
+ is_all_xattrs_deleted = !hfsplus_attr_exists(inode, NULL);
+
+ if (!is_xattr_acl_deleted && !is_all_xattrs_deleted)
+ goto end_removexattr;
+
+ cat_entry_type = hfs_bnode_read_u16(cat_fd.bnode, cat_fd.entryoffset);
+
+ if (cat_entry_type == HFSPLUS_FOLDER) {
+ flags = hfs_bnode_read_u16(cat_fd.bnode, cat_fd.entryoffset +
+ offsetof(struct hfsplus_cat_folder, flags));
+ if (is_xattr_acl_deleted)
+ flags &= ~HFSPLUS_ACL_EXISTS;
+ if (is_all_xattrs_deleted)
+ flags &= ~HFSPLUS_XATTR_EXISTS;
+ hfs_bnode_write_u16(cat_fd.bnode, cat_fd.entryoffset +
+ offsetof(struct hfsplus_cat_folder, flags),
+ flags);
+ hfsplus_mark_inode_dirty(inode, HFSPLUS_I_CAT_DIRTY);
+ } else if (cat_entry_type == HFSPLUS_FILE) {
+ flags = hfs_bnode_read_u16(cat_fd.bnode, cat_fd.entryoffset +
+ offsetof(struct hfsplus_cat_file, flags));
+ if (is_xattr_acl_deleted)
+ flags &= ~HFSPLUS_ACL_EXISTS;
+ if (is_all_xattrs_deleted)
+ flags &= ~HFSPLUS_XATTR_EXISTS;
+ hfs_bnode_write_u16(cat_fd.bnode, cat_fd.entryoffset +
+ offsetof(struct hfsplus_cat_file, flags),
+ flags);
+ hfsplus_mark_inode_dirty(inode, HFSPLUS_I_CAT_DIRTY);
+ } else {
+ printk(KERN_ERR "hfs: invalid catalog entry type\n");
+ err = -EIO;
+ goto end_removexattr;
+ }
+
+end_removexattr:
+ hfs_find_exit(&cat_fd);
+ return err;
+}
+
+static int hfsplus_osx_getxattr(struct dentry *dentry, const char *name,
+ void *buffer, size_t size, int type)
+{
+ char xattr_name[HFSPLUS_ATTR_MAX_STRLEN +
+ XATTR_MAC_OSX_PREFIX_LEN + 1] = {0};
+ size_t len = strlen(name);
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ if (len > HFSPLUS_ATTR_MAX_STRLEN)
+ return -EOPNOTSUPP;
+
+ strcpy(xattr_name, XATTR_MAC_OSX_PREFIX);
+ strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name);
+
+ return hfsplus_getxattr(dentry, xattr_name, buffer, size);
+}
+
+static int hfsplus_osx_setxattr(struct dentry *dentry, const char *name,
+ const void *buffer, size_t size, int flags, int type)
+{
+ char xattr_name[HFSPLUS_ATTR_MAX_STRLEN +
+ XATTR_MAC_OSX_PREFIX_LEN + 1] = {0};
+ size_t len = strlen(name);
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ if (len > HFSPLUS_ATTR_MAX_STRLEN)
+ return -EOPNOTSUPP;
+
+ strcpy(xattr_name, XATTR_MAC_OSX_PREFIX);
+ strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name);
+
+ return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
+}
+
+static size_t hfsplus_osx_listxattr(struct dentry *dentry, char *list,
+ size_t list_size, const char *name, size_t name_len, int type)
+{
+ /*
+ * This method is not used.
+ * It is used hfsplus_listxattr() instead of generic_listxattr().
+ */
+ return -EOPNOTSUPP;
+}
+
+const struct xattr_handler hfsplus_xattr_osx_handler = {
+ .prefix = XATTR_MAC_OSX_PREFIX,
+ .list = hfsplus_osx_listxattr,
+ .get = hfsplus_osx_getxattr,
+ .set = hfsplus_osx_setxattr,
+};
diff --git a/fs/hfsplus/xattr.h b/fs/hfsplus/xattr.h
new file mode 100644
index 00000000000..847b695b984
--- /dev/null
+++ b/fs/hfsplus/xattr.h
@@ -0,0 +1,60 @@
+/*
+ * linux/fs/hfsplus/xattr.h
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Logic of processing extended attributes
+ */
+
+#ifndef _LINUX_HFSPLUS_XATTR_H
+#define _LINUX_HFSPLUS_XATTR_H
+
+#include <linux/xattr.h>
+
+extern const struct xattr_handler hfsplus_xattr_osx_handler;
+extern const struct xattr_handler hfsplus_xattr_user_handler;
+extern const struct xattr_handler hfsplus_xattr_trusted_handler;
+/*extern const struct xattr_handler hfsplus_xattr_acl_access_handler;*/
+/*extern const struct xattr_handler hfsplus_xattr_acl_default_handler;*/
+extern const struct xattr_handler hfsplus_xattr_security_handler;
+
+extern const struct xattr_handler *hfsplus_xattr_handlers[];
+
+int __hfsplus_setxattr(struct inode *inode, const char *name,
+ const void *value, size_t size, int flags);
+
+static inline int hfsplus_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags)
+{
+ return __hfsplus_setxattr(dentry->d_inode, name, value, size, flags);
+}
+
+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);
+
+int hfsplus_init_security(struct inode *inode, struct inode *dir,
+ const struct qstr *qstr);
+
+static inline int hfsplus_init_acl(struct inode *inode, struct inode *dir)
+{
+ /*TODO: implement*/
+ return 0;
+}
+
+static inline int hfsplus_init_inode_security(struct inode *inode,
+ struct inode *dir,
+ const struct qstr *qstr)
+{
+ int err;
+
+ err = hfsplus_init_acl(inode, dir);
+ if (!err)
+ err = hfsplus_init_security(inode, dir, qstr);
+ return err;
+}
+
+#endif
diff --git a/fs/hfsplus/xattr_security.c b/fs/hfsplus/xattr_security.c
new file mode 100644
index 00000000000..83b842f113c
--- /dev/null
+++ b/fs/hfsplus/xattr_security.c
@@ -0,0 +1,104 @@
+/*
+ * linux/fs/hfsplus/xattr_trusted.c
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Handler for storing security labels as extended attributes.
+ */
+
+#include <linux/security.h>
+#include "hfsplus_fs.h"
+#include "xattr.h"
+
+static int hfsplus_security_getxattr(struct dentry *dentry, const char *name,
+ void *buffer, size_t size, int type)
+{
+ char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
+ size_t len = strlen(name);
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ if (len + XATTR_SECURITY_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
+ return -EOPNOTSUPP;
+
+ strcpy(xattr_name, XATTR_SECURITY_PREFIX);
+ strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name);
+
+ return hfsplus_getxattr(dentry, xattr_name, buffer, size);
+}
+
+static int hfsplus_security_setxattr(struct dentry *dentry, const char *name,
+ const void *buffer, size_t size, int flags, int type)
+{
+ char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
+ size_t len = strlen(name);
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ if (len + XATTR_SECURITY_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
+ return -EOPNOTSUPP;
+
+ strcpy(xattr_name, XATTR_SECURITY_PREFIX);
+ strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name);
+
+ return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
+}
+
+static size_t hfsplus_security_listxattr(struct dentry *dentry, char *list,
+ size_t list_size, const char *name, size_t name_len, int type)
+{
+ /*
+ * This method is not used.
+ * It is used hfsplus_listxattr() instead of generic_listxattr().
+ */
+ return -EOPNOTSUPP;
+}
+
+static int hfsplus_initxattrs(struct inode *inode,
+ const struct xattr *xattr_array,
+ void *fs_info)
+{
+ const struct xattr *xattr;
+ char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
+ size_t xattr_name_len;
+ int err = 0;
+
+ for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+ xattr_name_len = strlen(xattr->name);
+
+ if (xattr_name_len == 0)
+ continue;
+
+ if (xattr_name_len + XATTR_SECURITY_PREFIX_LEN >
+ HFSPLUS_ATTR_MAX_STRLEN)
+ return -EOPNOTSUPP;
+
+ strcpy(xattr_name, XATTR_SECURITY_PREFIX);
+ strcpy(xattr_name +
+ XATTR_SECURITY_PREFIX_LEN, xattr->name);
+ memset(xattr_name +
+ XATTR_SECURITY_PREFIX_LEN + xattr_name_len, 0, 1);
+
+ err = __hfsplus_setxattr(inode, xattr_name,
+ xattr->value, xattr->value_len, 0);
+ if (err)
+ break;
+ }
+ return err;
+}
+
+int hfsplus_init_security(struct inode *inode, struct inode *dir,
+ const struct qstr *qstr)
+{
+ return security_inode_init_security(inode, dir, qstr,
+ &hfsplus_initxattrs, NULL);
+}
+
+const struct xattr_handler hfsplus_xattr_security_handler = {
+ .prefix = XATTR_SECURITY_PREFIX,
+ .list = hfsplus_security_listxattr,
+ .get = hfsplus_security_getxattr,
+ .set = hfsplus_security_setxattr,
+};
diff --git a/fs/hfsplus/xattr_trusted.c b/fs/hfsplus/xattr_trusted.c
new file mode 100644
index 00000000000..426cee27754
--- /dev/null
+++ b/fs/hfsplus/xattr_trusted.c
@@ -0,0 +1,63 @@
+/*
+ * linux/fs/hfsplus/xattr_trusted.c
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Handler for trusted extended attributes.
+ */
+
+#include "hfsplus_fs.h"
+#include "xattr.h"
+
+static int hfsplus_trusted_getxattr(struct dentry *dentry, const char *name,
+ void *buffer, size_t size, int type)
+{
+ char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
+ size_t len = strlen(name);
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ if (len + XATTR_TRUSTED_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
+ return -EOPNOTSUPP;
+
+ strcpy(xattr_name, XATTR_TRUSTED_PREFIX);
+ strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name);
+
+ return hfsplus_getxattr(dentry, xattr_name, buffer, size);
+}
+
+static int hfsplus_trusted_setxattr(struct dentry *dentry, const char *name,
+ const void *buffer, size_t size, int flags, int type)
+{
+ char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
+ size_t len = strlen(name);
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ if (len + XATTR_TRUSTED_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
+ return -EOPNOTSUPP;
+
+ strcpy(xattr_name, XATTR_TRUSTED_PREFIX);
+ strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name);
+
+ return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
+}
+
+static size_t hfsplus_trusted_listxattr(struct dentry *dentry, char *list,
+ size_t list_size, const char *name, size_t name_len, int type)
+{
+ /*
+ * This method is not used.
+ * It is used hfsplus_listxattr() instead of generic_listxattr().
+ */
+ return -EOPNOTSUPP;
+}
+
+const struct xattr_handler hfsplus_xattr_trusted_handler = {
+ .prefix = XATTR_TRUSTED_PREFIX,
+ .list = hfsplus_trusted_listxattr,
+ .get = hfsplus_trusted_getxattr,
+ .set = hfsplus_trusted_setxattr,
+};
diff --git a/fs/hfsplus/xattr_user.c b/fs/hfsplus/xattr_user.c
new file mode 100644
index 00000000000..e34016561ae
--- /dev/null
+++ b/fs/hfsplus/xattr_user.c
@@ -0,0 +1,63 @@
+/*
+ * linux/fs/hfsplus/xattr_user.c
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Handler for user extended attributes.
+ */
+
+#include "hfsplus_fs.h"
+#include "xattr.h"
+
+static int hfsplus_user_getxattr(struct dentry *dentry, const char *name,
+ void *buffer, size_t size, int type)
+{
+ char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
+ size_t len = strlen(name);
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ if (len + XATTR_USER_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
+ return -EOPNOTSUPP;
+
+ strcpy(xattr_name, XATTR_USER_PREFIX);
+ strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name);
+
+ return hfsplus_getxattr(dentry, xattr_name, buffer, size);
+}
+
+static int hfsplus_user_setxattr(struct dentry *dentry, const char *name,
+ const void *buffer, size_t size, int flags, int type)
+{
+ char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
+ size_t len = strlen(name);
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ if (len + XATTR_USER_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
+ return -EOPNOTSUPP;
+
+ strcpy(xattr_name, XATTR_USER_PREFIX);
+ strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name);
+
+ return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
+}
+
+static size_t hfsplus_user_listxattr(struct dentry *dentry, char *list,
+ size_t list_size, const char *name, size_t name_len, int type)
+{
+ /*
+ * This method is not used.
+ * It is used hfsplus_listxattr() instead of generic_listxattr().
+ */
+ return -EOPNOTSUPP;
+}
+
+const struct xattr_handler hfsplus_xattr_user_handler = {
+ .prefix = XATTR_USER_PREFIX,
+ .list = hfsplus_user_listxattr,
+ .get = hfsplus_user_getxattr,
+ .set = hfsplus_user_setxattr,
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-27 23:26:36 +0000