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-rw-r--r--fs/hfsplus/Kconfig31
-rw-r--r--fs/hfsplus/Makefile4
-rw-r--r--fs/hfsplus/acl.h27
-rw-r--r--fs/hfsplus/attributes.c371
-rw-r--r--fs/hfsplus/bfind.c120
-rw-r--r--fs/hfsplus/bitmap.c61
-rw-r--r--fs/hfsplus/bnode.c141
-rw-r--r--fs/hfsplus/brec.c86
-rw-r--r--fs/hfsplus/btree.c240
-rw-r--r--fs/hfsplus/catalog.c226
-rw-r--r--fs/hfsplus/dir.c426
-rw-r--r--fs/hfsplus/extents.c380
-rw-r--r--fs/hfsplus/hfsplus_fs.h441
-rw-r--r--fs/hfsplus/hfsplus_raw.h94
-rw-r--r--fs/hfsplus/inode.c450
-rw-r--r--fs/hfsplus/ioctl.c266
-rw-r--r--fs/hfsplus/options.c98
-rw-r--r--fs/hfsplus/part_tbl.c134
-rw-r--r--fs/hfsplus/posix_acl.c140
-rw-r--r--fs/hfsplus/super.c655
-rw-r--r--fs/hfsplus/unicode.c111
-rw-r--r--fs/hfsplus/wrapper.c228
-rw-r--r--fs/hfsplus/xattr.c875
-rw-r--r--fs/hfsplus/xattr.h49
-rw-r--r--fs/hfsplus/xattr_security.c124
-rw-r--r--fs/hfsplus/xattr_trusted.c71
-rw-r--r--fs/hfsplus/xattr_user.c71
27 files changed, 4452 insertions, 1468 deletions
diff --git a/fs/hfsplus/Kconfig b/fs/hfsplus/Kconfig
new file mode 100644
index 00000000000..24bc20fd42f
--- /dev/null
+++ b/fs/hfsplus/Kconfig
@@ -0,0 +1,31 @@
+config HFSPLUS_FS
+ tristate "Apple Extended HFS file system support"
+ depends on BLOCK
+ select NLS
+ select NLS_UTF8
+ help
+ If you say Y here, you will be able to mount extended format
+ Macintosh-formatted hard drive partitions with full read-write access.
+
+ This file system is often called HFS+ and was introduced with
+ MacOS 8. It includes all Mac specific filesystem data such as
+ data forks and creator codes, but it also has several UNIX
+ style features such as file ownership and permissions.
+
+config HFSPLUS_FS_POSIX_ACL
+ bool "HFS+ POSIX Access Control Lists"
+ depends on HFSPLUS_FS
+ select FS_POSIX_ACL
+ help
+ POSIX Access Control Lists (ACLs) support permissions for users and
+ groups beyond the owner/group/world scheme.
+
+ To learn more about Access Control Lists, visit the POSIX ACLs for
+ Linux website <http://acl.bestbits.at/>.
+
+ It needs to understand that POSIX ACLs are treated only under
+ Linux. POSIX ACLs doesn't mean something under Mac OS X.
+ Mac OS X beginning with version 10.4 ("Tiger") support NFSv4 ACLs,
+ which are part of the NFSv4 standard.
+
+ If you don't know what Access Control Lists are, say N
diff --git a/fs/hfsplus/Makefile b/fs/hfsplus/Makefile
index 3cc0df73015..683fca2e5e6 100644
--- a/fs/hfsplus/Makefile
+++ b/fs/hfsplus/Makefile
@@ -5,5 +5,7 @@
obj-$(CONFIG_HFSPLUS_FS) += hfsplus.o
hfsplus-objs := super.o options.o inode.o ioctl.o extents.o catalog.o dir.o btree.o \
- bnode.o brec.o bfind.o tables.o unicode.o wrapper.o bitmap.o part_tbl.o
+ bnode.o brec.o bfind.o tables.o unicode.o wrapper.o bitmap.o part_tbl.o \
+ attributes.o xattr.o xattr_user.o xattr_security.o xattr_trusted.o
+hfsplus-$(CONFIG_HFSPLUS_FS_POSIX_ACL) += posix_acl.o
diff --git a/fs/hfsplus/acl.h b/fs/hfsplus/acl.h
new file mode 100644
index 00000000000..95c8ed9ec17
--- /dev/null
+++ b/fs/hfsplus/acl.h
@@ -0,0 +1,27 @@
+/*
+ * linux/fs/hfsplus/acl.h
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Handler for Posix Access Control Lists (ACLs) support.
+ */
+
+#include <linux/posix_acl_xattr.h>
+
+#ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
+
+/* posix_acl.c */
+struct posix_acl *hfsplus_get_posix_acl(struct inode *inode, int type);
+int hfsplus_set_posix_acl(struct inode *inode, struct posix_acl *acl,
+ int type);
+extern int hfsplus_init_posix_acl(struct inode *, struct inode *);
+
+#else /* CONFIG_HFSPLUS_FS_POSIX_ACL */
+#define hfsplus_get_posix_acl NULL
+#define hfsplus_set_posix_acl NULL
+
+static inline int hfsplus_init_posix_acl(struct inode *inode, struct inode *dir)
+{
+ return 0;
+}
+#endif /* CONFIG_HFSPLUS_FS_POSIX_ACL */
diff --git a/fs/hfsplus/attributes.c b/fs/hfsplus/attributes.c
new file mode 100644
index 00000000000..e5b221de7de
--- /dev/null
+++ b/fs/hfsplus/attributes.c
@@ -0,0 +1,371 @@
+/*
+ * 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 __init 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) {
+ int res = hfsplus_asc2uni(sb,
+ (struct hfsplus_unistr *)&key->attr.key_name,
+ HFSPLUS_ATTR_MAX_STRLEN, name, strlen(name));
+ if (res)
+ return res;
+ 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;
+}
+
+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;
+
+ hfs_dbg(ATTR_MOD, "find_attr: %s,%d\n", name ? name : NULL, cnid);
+
+ if (!HFSPLUS_SB(sb)->attr_tree) {
+ pr_err("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;
+
+ hfs_dbg(ATTR_MOD, "create_attr: %s,%ld\n",
+ name ? name : NULL, inode->i_ino);
+
+ if (!HFSPLUS_SB(sb)->attr_tree) {
+ pr_err("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:
+ pr_err("only inline data xattr are supported\n");
+ return -EOPNOTSUPP;
+ default:
+ pr_err("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;
+
+ hfs_dbg(ATTR_MOD, "delete_attr: %s,%ld\n",
+ name ? name : NULL, inode->i_ino);
+
+ if (!HFSPLUS_SB(sb)->attr_tree) {
+ pr_err("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 {
+ pr_err("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;
+
+ hfs_dbg(ATTR_MOD, "delete_all_attrs: %d\n", cnid);
+
+ if (!HFSPLUS_SB(dir->i_sb)->attr_tree) {
+ pr_err("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)
+ pr_err("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 5007a41f1be..c1422d91cd3 100644
--- a/fs/hfsplus/bfind.c
+++ b/fs/hfsplus/bfind.c
@@ -22,8 +22,21 @@ int hfs_find_init(struct hfs_btree *tree, struct hfs_find_data *fd)
return -ENOMEM;
fd->search_key = ptr;
fd->key = ptr + tree->max_key_len + 2;
- dprint(DBG_BNODE_REFS, "find_init: %d (%p)\n", tree->cnid, __builtin_return_address(0));
- down(&tree->tree_lock);
+ hfs_dbg(BNODE_REFS, "find_init: %d (%p)\n",
+ tree->cnid, __builtin_return_address(0));
+ 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;
}
@@ -31,20 +44,83 @@ void hfs_find_exit(struct hfs_find_data *fd)
{
hfs_bnode_put(fd->bnode);
kfree(fd->search_key);
- dprint(DBG_BNODE_REFS, "find_exit: %d (%p)\n", fd->tree->cnid, __builtin_return_address(0));
- up(&fd->tree->tree_lock);
+ hfs_dbg(BNODE_REFS, "find_exit: %d (%p)\n",
+ fd->tree->cnid, __builtin_return_address(0));
+ mutex_unlock(&fd->tree->tree_lock);
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;
+ __be32 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 {
+ cur_cnid = 0; /* used-uninitialized warning */
+ search_cnid = 0;
+ 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;
@@ -52,35 +128,41 @@ int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd)
rec = (e + b) / 2;
len = hfs_brec_lenoff(bnode, rec, &off);
keylen = hfs_brec_keylen(bnode, rec);
+ if (keylen == 0) {
+ res = -EINVAL;
+ goto fail;
+ }
hfs_bnode_read(bnode, fd->key, off, keylen);
- cmpval = bnode->tree->keycmp(fd->key, fd->search_key);
- if (!cmpval) {
- 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);
+ if (keylen == 0) {
+ res = -EINVAL;
+ goto fail;
+ }
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;
@@ -111,7 +193,7 @@ 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)
@@ -126,7 +208,7 @@ int hfs_brec_find(struct hfs_find_data *fd)
return res;
invalid:
- printk(KERN_ERR "hfs: inconsistency in B*Tree (%d,%d,%d,%u,%u)\n",
+ pr_err("inconsistency in B*Tree (%d,%d,%d,%u,%u)\n",
height, bnode->height, bnode->type, nidx, parent);
res = -EIO;
release:
@@ -138,7 +220,7 @@ 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)
@@ -198,6 +280,10 @@ int hfs_brec_goto(struct hfs_find_data *fd, int cnt)
len = hfs_brec_lenoff(bnode, fd->record, &off);
keylen = hfs_brec_keylen(bnode, fd->record);
+ if (keylen == 0) {
+ res = -EINVAL;
+ goto out;
+ }
fd->keyoffset = off;
fd->keylength = keylen;
fd->entryoffset = off + keylen;
diff --git a/fs/hfsplus/bitmap.c b/fs/hfsplus/bitmap.c
index d128a25b74d..d2954451519 100644
--- a/fs/hfsplus/bitmap.c
+++ b/fs/hfsplus/bitmap.c
@@ -15,8 +15,10 @@
#define PAGE_CACHE_BITS (PAGE_CACHE_SIZE * 8)
-int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset, u32 *max)
+int hfsplus_block_allocate(struct super_block *sb, u32 size,
+ u32 offset, u32 *max)
{
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct page *page;
struct address_space *mapping;
__be32 *pptr, *curr, *end;
@@ -28,10 +30,14 @@ int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset, u32 *ma
if (!len)
return size;
- dprint(DBG_BITMAP, "block_allocate: %u,%u,%u\n", size, offset, len);
- mutex_lock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
- mapping = HFSPLUS_SB(sb).alloc_file->i_mapping;
+ hfs_dbg(BITMAP, "block_allocate: %u,%u,%u\n", size, offset, len);
+ mutex_lock(&sbi->alloc_mutex);
+ mapping = sbi->alloc_file->i_mapping;
page = read_mapping_page(mapping, offset / PAGE_CACHE_BITS, NULL);
+ if (IS_ERR(page)) {
+ start = size;
+ goto out;
+ }
pptr = kmap(page);
curr = pptr + (offset & (PAGE_CACHE_BITS - 1)) / 32;
i = offset % 32;
@@ -73,20 +79,24 @@ int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset, u32 *ma
break;
page = read_mapping_page(mapping, offset / PAGE_CACHE_BITS,
NULL);
+ if (IS_ERR(page)) {
+ start = size;
+ goto out;
+ }
curr = pptr = kmap(page);
if ((size ^ offset) / PAGE_CACHE_BITS)
end = pptr + PAGE_CACHE_BITS / 32;
else
end = pptr + ((size + 31) & (PAGE_CACHE_BITS - 1)) / 32;
}
- dprint(DBG_BITMAP, "bitmap full\n");
+ hfs_dbg(BITMAP, "bitmap full\n");
start = size;
goto out;
found:
start = offset + (curr - pptr) * 32 + i;
if (start >= size) {
- dprint(DBG_BITMAP, "bitmap full\n");
+ hfs_dbg(BITMAP, "bitmap full\n");
goto out;
}
/* do any partial u32 at the start */
@@ -120,6 +130,10 @@ found:
offset += PAGE_CACHE_BITS;
page = read_mapping_page(mapping, offset / PAGE_CACHE_BITS,
NULL);
+ if (IS_ERR(page)) {
+ start = size;
+ goto out;
+ }
pptr = kmap(page);
curr = pptr;
end = pptr + PAGE_CACHE_BITS / 32;
@@ -138,16 +152,17 @@ done:
set_page_dirty(page);
kunmap(page);
*max = offset + (curr - pptr) * 32 + i - start;
- HFSPLUS_SB(sb).free_blocks -= *max;
- sb->s_dirt = 1;
- dprint(DBG_BITMAP, "-> %u,%u\n", start, *max);
+ sbi->free_blocks -= *max;
+ hfsplus_mark_mdb_dirty(sb);
+ hfs_dbg(BITMAP, "-> %u,%u\n", start, *max);
out:
- mutex_unlock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
+ mutex_unlock(&sbi->alloc_mutex);
return start;
}
int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count)
{
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct page *page;
struct address_space *mapping;
__be32 *pptr, *curr, *end;
@@ -158,15 +173,17 @@ int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count)
if (!count)
return 0;
- dprint(DBG_BITMAP, "block_free: %u,%u\n", offset, count);
+ hfs_dbg(BITMAP, "block_free: %u,%u\n", offset, count);
/* are all of the bits in range? */
- if ((offset + count) > HFSPLUS_SB(sb).total_blocks)
- return -2;
+ if ((offset + count) > sbi->total_blocks)
+ return -ENOENT;
- mutex_lock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
- mapping = HFSPLUS_SB(sb).alloc_file->i_mapping;
+ mutex_lock(&sbi->alloc_mutex);
+ mapping = sbi->alloc_file->i_mapping;
pnr = offset / PAGE_CACHE_BITS;
page = read_mapping_page(mapping, pnr, NULL);
+ if (IS_ERR(page))
+ goto kaboom;
pptr = kmap(page);
curr = pptr + (offset & (PAGE_CACHE_BITS - 1)) / 32;
end = pptr + PAGE_CACHE_BITS / 32;
@@ -199,6 +216,8 @@ int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count)
set_page_dirty(page);
kunmap(page);
page = read_mapping_page(mapping, ++pnr, NULL);
+ if (IS_ERR(page))
+ goto kaboom;
pptr = kmap(page);
curr = pptr;
end = pptr + PAGE_CACHE_BITS / 32;
@@ -212,9 +231,15 @@ done:
out:
set_page_dirty(page);
kunmap(page);
- HFSPLUS_SB(sb).free_blocks += len;
- sb->s_dirt = 1;
- mutex_unlock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
+ sbi->free_blocks += len;
+ hfsplus_mark_mdb_dirty(sb);
+ mutex_unlock(&sbi->alloc_mutex);
return 0;
+
+kaboom:
+ pr_crit("unable to mark blocks free: error %ld\n", PTR_ERR(page));
+ mutex_unlock(&sbi->alloc_mutex);
+
+ return -EIO;
}
diff --git a/fs/hfsplus/bnode.c b/fs/hfsplus/bnode.c
index 29da6574ba7..759708fd933 100644
--- a/fs/hfsplus/bnode.c
+++ b/fs/hfsplus/bnode.c
@@ -27,13 +27,13 @@ void hfs_bnode_read(struct hfs_bnode *node, void *buf, int off, int len)
pagep = node->page + (off >> PAGE_CACHE_SHIFT);
off &= ~PAGE_CACHE_MASK;
- l = min(len, (int)PAGE_CACHE_SIZE - off);
+ l = min_t(int, len, PAGE_CACHE_SIZE - off);
memcpy(buf, kmap(*pagep) + off, l);
kunmap(*pagep);
while ((len -= l) != 0) {
buf += l;
- l = min(len, (int)PAGE_CACHE_SIZE);
+ l = min_t(int, len, PAGE_CACHE_SIZE);
memcpy(buf, kmap(*++pagep), l);
kunmap(*pagep);
}
@@ -42,7 +42,7 @@ void hfs_bnode_read(struct hfs_bnode *node, void *buf, int off, int len)
u16 hfs_bnode_read_u16(struct hfs_bnode *node, int off)
{
__be16 data;
- // optimize later...
+ /* TODO: optimize later... */
hfs_bnode_read(node, &data, off, 2);
return be16_to_cpu(data);
}
@@ -50,7 +50,7 @@ u16 hfs_bnode_read_u16(struct hfs_bnode *node, int off)
u8 hfs_bnode_read_u8(struct hfs_bnode *node, int off)
{
u8 data;
- // optimize later...
+ /* TODO: optimize later... */
hfs_bnode_read(node, &data, off, 1);
return data;
}
@@ -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;
@@ -79,14 +80,14 @@ void hfs_bnode_write(struct hfs_bnode *node, void *buf, int off, int len)
pagep = node->page + (off >> PAGE_CACHE_SHIFT);
off &= ~PAGE_CACHE_MASK;
- l = min(len, (int)PAGE_CACHE_SIZE - off);
+ l = min_t(int, len, PAGE_CACHE_SIZE - off);
memcpy(kmap(*pagep) + off, buf, l);
set_page_dirty(*pagep);
kunmap(*pagep);
while ((len -= l) != 0) {
buf += l;
- l = min(len, (int)PAGE_CACHE_SIZE);
+ l = min_t(int, len, PAGE_CACHE_SIZE);
memcpy(kmap(*++pagep), buf, l);
set_page_dirty(*pagep);
kunmap(*pagep);
@@ -96,7 +97,7 @@ void hfs_bnode_write(struct hfs_bnode *node, void *buf, int off, int len)
void hfs_bnode_write_u16(struct hfs_bnode *node, int off, u16 data)
{
__be16 v = cpu_to_be16(data);
- // optimize later...
+ /* TODO: optimize later... */
hfs_bnode_write(node, &v, off, 2);
}
@@ -109,13 +110,13 @@ void hfs_bnode_clear(struct hfs_bnode *node, int off, int len)
pagep = node->page + (off >> PAGE_CACHE_SHIFT);
off &= ~PAGE_CACHE_MASK;
- l = min(len, (int)PAGE_CACHE_SIZE - off);
+ l = min_t(int, len, PAGE_CACHE_SIZE - off);
memset(kmap(*pagep) + off, 0, l);
set_page_dirty(*pagep);
kunmap(*pagep);
while ((len -= l) != 0) {
- l = min(len, (int)PAGE_CACHE_SIZE);
+ l = min_t(int, len, PAGE_CACHE_SIZE);
memset(kmap(*++pagep), 0, l);
set_page_dirty(*pagep);
kunmap(*pagep);
@@ -129,7 +130,7 @@ void hfs_bnode_copy(struct hfs_bnode *dst_node, int dst,
struct page **src_page, **dst_page;
int l;
- dprint(DBG_BNODE_MOD, "copybytes: %u,%u,%u\n", dst, src, len);
+ hfs_dbg(BNODE_MOD, "copybytes: %u,%u,%u\n", dst, src, len);
if (!len)
return;
tree = src_node->tree;
@@ -141,14 +142,14 @@ void hfs_bnode_copy(struct hfs_bnode *dst_node, int dst,
dst &= ~PAGE_CACHE_MASK;
if (src == dst) {
- l = min(len, (int)PAGE_CACHE_SIZE - src);
+ l = min_t(int, len, PAGE_CACHE_SIZE - src);
memcpy(kmap(*dst_page) + src, kmap(*src_page) + src, l);
kunmap(*src_page);
set_page_dirty(*dst_page);
kunmap(*dst_page);
while ((len -= l) != 0) {
- l = min(len, (int)PAGE_CACHE_SIZE);
+ l = min_t(int, len, PAGE_CACHE_SIZE);
memcpy(kmap(*++dst_page), kmap(*++src_page), l);
kunmap(*src_page);
set_page_dirty(*dst_page);
@@ -187,7 +188,7 @@ void hfs_bnode_move(struct hfs_bnode *node, int dst, int src, int len)
struct page **src_page, **dst_page;
int l;
- dprint(DBG_BNODE_MOD, "movebytes: %u,%u,%u\n", dst, src, len);
+ hfs_dbg(BNODE_MOD, "movebytes: %u,%u,%u\n", dst, src, len);
if (!len)
return;
src += node->page_offset;
@@ -212,7 +213,8 @@ void hfs_bnode_move(struct hfs_bnode *node, int dst, int src, int len)
dst_page--;
}
src -= len;
- memmove(kmap(*dst_page) + src, kmap(*src_page) + src, len);
+ memmove(kmap(*dst_page) + src,
+ kmap(*src_page) + src, len);
kunmap(*src_page);
set_page_dirty(*dst_page);
kunmap(*dst_page);
@@ -249,15 +251,17 @@ void hfs_bnode_move(struct hfs_bnode *node, int dst, int src, int len)
dst &= ~PAGE_CACHE_MASK;
if (src == dst) {
- l = min(len, (int)PAGE_CACHE_SIZE - src);
- memmove(kmap(*dst_page) + src, kmap(*src_page) + src, l);
+ l = min_t(int, len, PAGE_CACHE_SIZE - src);
+ memmove(kmap(*dst_page) + src,
+ kmap(*src_page) + src, l);
kunmap(*src_page);
set_page_dirty(*dst_page);
kunmap(*dst_page);
while ((len -= l) != 0) {
- l = min(len, (int)PAGE_CACHE_SIZE);
- memmove(kmap(*++dst_page), kmap(*++src_page), l);
+ l = min_t(int, len, PAGE_CACHE_SIZE);
+ memmove(kmap(*++dst_page),
+ kmap(*++src_page), l);
kunmap(*src_page);
set_page_dirty(*dst_page);
kunmap(*dst_page);
@@ -268,7 +272,8 @@ void hfs_bnode_move(struct hfs_bnode *node, int dst, int src, int len)
do {
src_ptr = kmap(*src_page) + src;
dst_ptr = kmap(*dst_page) + dst;
- if (PAGE_CACHE_SIZE - src < PAGE_CACHE_SIZE - dst) {
+ if (PAGE_CACHE_SIZE - src <
+ PAGE_CACHE_SIZE - dst) {
l = PAGE_CACHE_SIZE - src;
src = 0;
dst += l;
@@ -297,34 +302,35 @@ void hfs_bnode_dump(struct hfs_bnode *node)
__be32 cnid;
int i, off, key_off;
- dprint(DBG_BNODE_MOD, "bnode: %d\n", node->this);
+ hfs_dbg(BNODE_MOD, "bnode: %d\n", node->this);
hfs_bnode_read(node, &desc, 0, sizeof(desc));
- dprint(DBG_BNODE_MOD, "%d, %d, %d, %d, %d\n",
+ hfs_dbg(BNODE_MOD, "%d, %d, %d, %d, %d\n",
be32_to_cpu(desc.next), be32_to_cpu(desc.prev),
desc.type, desc.height, be16_to_cpu(desc.num_recs));
off = node->tree->node_size - 2;
for (i = be16_to_cpu(desc.num_recs); i >= 0; off -= 2, i--) {
key_off = hfs_bnode_read_u16(node, off);
- dprint(DBG_BNODE_MOD, " %d", key_off);
+ hfs_dbg(BNODE_MOD, " %d", key_off);
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;
- dprint(DBG_BNODE_MOD, " (%d", tmp);
+ hfs_dbg_cont(BNODE_MOD, " (%d", tmp);
hfs_bnode_read(node, &cnid, key_off + tmp, 4);
- dprint(DBG_BNODE_MOD, ",%d)", be32_to_cpu(cnid));
+ hfs_dbg_cont(BNODE_MOD, ",%d)", be32_to_cpu(cnid));
} else if (i && node->type == HFS_NODE_LEAF) {
int tmp;
tmp = hfs_bnode_read_u16(node, key_off);
- dprint(DBG_BNODE_MOD, " (%d)", tmp);
+ hfs_dbg_cont(BNODE_MOD, " (%d)", tmp);
}
}
- dprint(DBG_BNODE_MOD, "\n");
+ hfs_dbg_cont(BNODE_MOD, "\n");
}
void hfs_bnode_unlink(struct hfs_bnode *node)
@@ -340,7 +346,8 @@ void hfs_bnode_unlink(struct hfs_bnode *node)
return;
tmp->next = node->next;
cnid = cpu_to_be32(tmp->next);
- hfs_bnode_write(tmp, &cnid, offsetof(struct hfs_bnode_desc, next), 4);
+ hfs_bnode_write(tmp, &cnid,
+ offsetof(struct hfs_bnode_desc, next), 4);
hfs_bnode_put(tmp);
} else if (node->type == HFS_NODE_LEAF)
tree->leaf_head = node->next;
@@ -351,15 +358,15 @@ void hfs_bnode_unlink(struct hfs_bnode *node)
return;
tmp->prev = node->prev;
cnid = cpu_to_be32(tmp->prev);
- hfs_bnode_write(tmp, &cnid, offsetof(struct hfs_bnode_desc, prev), 4);
+ hfs_bnode_write(tmp, &cnid,
+ offsetof(struct hfs_bnode_desc, prev), 4);
hfs_bnode_put(tmp);
} else if (node->type == HFS_NODE_LEAF)
tree->leaf_tail = node->prev;
- // move down?
- if (!node->prev && !node->next) {
- printk(KERN_DEBUG "hfs_btree_del_level\n");
- }
+ /* move down? */
+ if (!node->prev && !node->next)
+ hfs_dbg(BNODE_MOD, "hfs_btree_del_level\n");
if (!node->parent) {
tree->root = 0;
tree->depth = 0;
@@ -379,16 +386,15 @@ struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *tree, u32 cnid)
struct hfs_bnode *node;
if (cnid >= tree->node_count) {
- printk(KERN_ERR "hfs: request for non-existent node %d in B*Tree\n", cnid);
+ pr_err("request for non-existent node %d in B*Tree\n",
+ cnid);
return NULL;
}
for (node = tree->node_hash[hfs_bnode_hash(cnid)];
- node; node = node->next_hash) {
- if (node->this == cnid) {
+ node; node = node->next_hash)
+ if (node->this == cnid)
return node;
- }
- }
return NULL;
}
@@ -402,7 +408,8 @@ static struct hfs_bnode *__hfs_bnode_create(struct hfs_btree *tree, u32 cnid)
loff_t off;
if (cnid >= tree->node_count) {
- printk(KERN_ERR "hfs: request for non-existent node %d in B*Tree\n", cnid);
+ pr_err("request for non-existent node %d in B*Tree\n",
+ cnid);
return NULL;
}
@@ -416,8 +423,8 @@ static struct hfs_bnode *__hfs_bnode_create(struct hfs_btree *tree, u32 cnid)
node->this = cnid;
set_bit(HFS_BNODE_NEW, &node->flags);
atomic_set(&node->refcnt, 1);
- dprint(DBG_BNODE_REFS, "new_node(%d:%d): 1\n",
- node->tree->cnid, node->this);
+ hfs_dbg(BNODE_REFS, "new_node(%d:%d): 1\n",
+ node->tree->cnid, node->this);
init_waitqueue_head(&node->lock_wq);
spin_lock(&tree->hash_lock);
node2 = hfs_bnode_findhash(tree, cnid);
@@ -429,7 +436,8 @@ static struct hfs_bnode *__hfs_bnode_create(struct hfs_btree *tree, u32 cnid)
} else {
spin_unlock(&tree->hash_lock);
kfree(node);
- wait_event(node2->lock_wq, !test_bit(HFS_BNODE_NEW, &node2->flags));
+ wait_event(node2->lock_wq,
+ !test_bit(HFS_BNODE_NEW, &node2->flags));
return node2;
}
spin_unlock(&tree->hash_lock);
@@ -460,7 +468,7 @@ void hfs_bnode_unhash(struct hfs_bnode *node)
{
struct hfs_bnode **p;
- dprint(DBG_BNODE_REFS, "remove_node(%d:%d): %d\n",
+ hfs_dbg(BNODE_REFS, "remove_node(%d:%d): %d\n",
node->tree->cnid, node->this, atomic_read(&node->refcnt));
for (p = &node->tree->node_hash[hfs_bnode_hash(node->this)];
*p && *p != node; p = &(*p)->next_hash)
@@ -483,7 +491,8 @@ struct hfs_bnode *hfs_bnode_find(struct hfs_btree *tree, u32 num)
if (node) {
hfs_bnode_get(node);
spin_unlock(&tree->hash_lock);
- wait_event(node->lock_wq, !test_bit(HFS_BNODE_NEW, &node->flags));
+ wait_event(node->lock_wq,
+ !test_bit(HFS_BNODE_NEW, &node->flags));
if (test_bit(HFS_BNODE_ERROR, &node->flags))
goto node_error;
return node;
@@ -497,7 +506,8 @@ struct hfs_bnode *hfs_bnode_find(struct hfs_btree *tree, u32 num)
if (!test_bit(HFS_BNODE_NEW, &node->flags))
return node;
- desc = (struct hfs_bnode_desc *)(kmap(node->page[0]) + node->page_offset);
+ desc = (struct hfs_bnode_desc *)(kmap(node->page[0]) +
+ node->page_offset);
node->prev = be32_to_cpu(desc->prev);
node->next = be32_to_cpu(desc->next);
node->num_recs = be16_to_cpu(desc->num_recs);
@@ -556,11 +566,13 @@ node_error:
void hfs_bnode_free(struct hfs_bnode *node)
{
- //int i;
+#if 0
+ int i;
- //for (i = 0; i < node->tree->pages_per_bnode; i++)
- // if (node->page[i])
- // page_cache_release(node->page[i]);
+ for (i = 0; i < node->tree->pages_per_bnode; i++)
+ if (node->page[i])
+ page_cache_release(node->page[i]);
+#endif
kfree(node);
}
@@ -574,7 +586,7 @@ struct hfs_bnode *hfs_bnode_create(struct hfs_btree *tree, u32 num)
node = hfs_bnode_findhash(tree, num);
spin_unlock(&tree->hash_lock);
if (node) {
- printk(KERN_CRIT "new node %u already hashed?\n", num);
+ pr_crit("new node %u already hashed?\n", num);
WARN_ON(1);
return node;
}
@@ -588,7 +600,7 @@ struct hfs_bnode *hfs_bnode_create(struct hfs_btree *tree, u32 num)
pagep = node->page;
memset(kmap(*pagep) + node->page_offset, 0,
- min((int)PAGE_CACHE_SIZE, (int)tree->node_size));
+ min_t(int, PAGE_CACHE_SIZE, tree->node_size));
set_page_dirty(*pagep);
kunmap(*pagep);
for (i = 1; i < tree->pages_per_bnode; i++) {
@@ -606,8 +618,9 @@ void hfs_bnode_get(struct hfs_bnode *node)
{
if (node) {
atomic_inc(&node->refcnt);
- dprint(DBG_BNODE_REFS, "get_node(%d:%d): %d\n",
- node->tree->cnid, node->this, atomic_read(&node->refcnt));
+ hfs_dbg(BNODE_REFS, "get_node(%d:%d): %d\n",
+ node->tree->cnid, node->this,
+ atomic_read(&node->refcnt));
}
}
@@ -618,8 +631,9 @@ void hfs_bnode_put(struct hfs_bnode *node)
struct hfs_btree *tree = node->tree;
int i;
- dprint(DBG_BNODE_REFS, "put_node(%d:%d): %d\n",
- node->tree->cnid, node->this, atomic_read(&node->refcnt));
+ hfs_dbg(BNODE_REFS, "put_node(%d:%d): %d\n",
+ node->tree->cnid, node->this,
+ atomic_read(&node->refcnt));
BUG_ON(!atomic_read(&node->refcnt));
if (!atomic_dec_and_lock(&node->refcnt, &tree->hash_lock))
return;
@@ -632,6 +646,8 @@ 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);
+ if (hfs_bnode_need_zeroout(tree))
+ hfs_bnode_clear(node, 0, tree->node_size);
hfs_bmap_free(node);
hfs_bnode_free(node);
return;
@@ -640,3 +656,16 @@ void hfs_bnode_put(struct hfs_bnode *node)
}
}
+/*
+ * Unused nodes have to be zeroed if this is the catalog tree and
+ * a corresponding flag in the volume header is set.
+ */
+bool hfs_bnode_need_zeroout(struct hfs_btree *tree)
+{
+ struct super_block *sb = tree->inode->i_sb;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+ const u32 volume_attr = be32_to_cpu(sbi->s_vhdr->attributes);
+
+ return tree->cnid == HFSPLUS_CAT_CNID &&
+ volume_attr & HFSPLUS_VOL_UNUSED_NODE_FIX;
+}
diff --git a/fs/hfsplus/brec.c b/fs/hfsplus/brec.c
index c88e5d72a40..6e560d56094 100644
--- a/fs/hfsplus/brec.c
+++ b/fs/hfsplus/brec.c
@@ -36,16 +36,25 @@ 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, node->tree->node_size - (rec + 1) * 2);
+ recoff = hfs_bnode_read_u16(node,
+ node->tree->node_size - (rec + 1) * 2);
if (!recoff)
return 0;
- if (node->tree->attributes & HFS_TREE_BIGKEYS)
- retval = hfs_bnode_read_u16(node, recoff) + 2;
- else
- retval = (hfs_bnode_read_u8(node, recoff) | 1) + 1;
+ if (recoff > node->tree->node_size - 2) {
+ pr_err("recoff %d too large\n", recoff);
+ return 0;
+ }
+
+ retval = hfs_bnode_read_u16(node, recoff) + 2;
+ if (retval > node->tree->max_key_len + 2) {
+ pr_err("keylen %d too large\n",
+ retval);
+ retval = 0;
+ }
}
return retval;
}
@@ -81,7 +90,8 @@ again:
end_rec_off = tree->node_size - (node->num_recs + 1) * 2;
end_off = hfs_bnode_read_u16(node, end_rec_off);
end_rec_off -= 2;
- dprint(DBG_BNODE_MOD, "insert_rec: %d, %d, %d, %d\n", rec, size, end_off, end_rec_off);
+ hfs_dbg(BNODE_MOD, "insert_rec: %d, %d, %d, %d\n",
+ rec, size, end_off, end_rec_off);
if (size > end_rec_off - end_off) {
if (new_node)
panic("not enough room!\n");
@@ -96,7 +106,9 @@ again:
}
node->num_recs++;
/* write new last offset */
- hfs_bnode_write_u16(node, offsetof(struct hfs_bnode_desc, num_recs), node->num_recs);
+ hfs_bnode_write_u16(node,
+ offsetof(struct hfs_bnode_desc, num_recs),
+ node->num_recs);
hfs_bnode_write_u16(node, end_rec_off, end_off + size);
data_off = end_off;
data_rec_off = end_rec_off + 2;
@@ -140,15 +152,17 @@ 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 = cpu_to_be16(tree->max_key_len);
+ fd->search_key->key_len =
+ cpu_to_be16(tree->max_key_len);
key_len = tree->max_key_len + 2;
}
goto again;
@@ -177,7 +191,8 @@ again:
mark_inode_dirty(tree->inode);
}
hfs_bnode_dump(node);
- dprint(DBG_BNODE_MOD, "remove_rec: %d, %d\n", fd->record, fd->keylength + fd->entrylength);
+ hfs_dbg(BNODE_MOD, "remove_rec: %d, %d\n",
+ fd->record, fd->keylength + fd->entrylength);
if (!--node->num_recs) {
hfs_bnode_unlink(node);
if (!node->parent)
@@ -188,10 +203,12 @@ 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, offsetof(struct hfs_bnode_desc, num_recs), node->num_recs);
+ hfs_bnode_write_u16(node,
+ offsetof(struct hfs_bnode_desc, num_recs),
+ node->num_recs);
if (rec_off == end_off)
goto skip;
@@ -216,7 +233,7 @@ skip:
static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd)
{
struct hfs_btree *tree;
- struct hfs_bnode *node, *new_node;
+ struct hfs_bnode *node, *new_node, *next_node;
struct hfs_bnode_desc node_desc;
int num_recs, new_rec_off, new_off, old_rec_off;
int data_start, data_end, size;
@@ -227,7 +244,7 @@ static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd)
if (IS_ERR(new_node))
return new_node;
hfs_bnode_get(node);
- dprint(DBG_BNODE_MOD, "split_nodes: %d - %d - %d\n",
+ hfs_dbg(BNODE_MOD, "split_nodes: %d - %d - %d\n",
node->this, new_node->this, node->next);
new_node->next = node->next;
new_node->prev = node->this;
@@ -235,6 +252,17 @@ static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd)
new_node->type = node->type;
new_node->height = node->height;
+ if (node->next)
+ next_node = hfs_bnode_find(tree, node->next);
+ else
+ next_node = NULL;
+
+ if (IS_ERR(next_node)) {
+ hfs_bnode_put(node);
+ hfs_bnode_put(new_node);
+ return next_node;
+ }
+
size = tree->node_size / 2 - node->num_recs * 2 - 14;
old_rec_off = tree->node_size - 4;
num_recs = 1;
@@ -248,6 +276,8 @@ static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd)
/* panic? */
hfs_bnode_put(node);
hfs_bnode_put(new_node);
+ if (next_node)
+ hfs_bnode_put(next_node);
return ERR_PTR(-ENOSPC);
}
@@ -302,8 +332,7 @@ static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd)
hfs_bnode_write(node, &node_desc, 0, sizeof(node_desc));
/* update next bnode header */
- if (new_node->next) {
- struct hfs_bnode *next_node = hfs_bnode_find(tree, new_node->next);
+ if (next_node) {
next_node->prev = new_node->this;
hfs_bnode_read(next_node, &node_desc, 0, sizeof(node_desc));
node_desc.prev = cpu_to_be32(next_node->prev);
@@ -340,16 +369,18 @@ 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;
- dprint(DBG_BNODE_MOD, "update_rec: %d, %d, %d\n", rec, fd->keylength, newkeylen);
+ hfs_dbg(BNODE_MOD, "update_rec: %d, %d, %d\n",
+ rec, fd->keylength, newkeylen);
rec_off = tree->node_size - (rec + 2) * 2;
end_rec_off = tree->node_size - (parent->num_recs + 1) * 2;
@@ -360,7 +391,7 @@ again:
end_off = hfs_bnode_read_u16(parent, end_rec_off);
if (end_rec_off - end_off < diff) {
- printk(KERN_DEBUG "hfs: splitting index node...\n");
+ hfs_dbg(BNODE_MOD, "splitting index node\n");
fd->bnode = parent;
new_node = hfs_bnode_split(fd);
if (IS_ERR(new_node))
@@ -368,7 +399,8 @@ again:
parent = fd->bnode;
rec = fd->record;
rec_off = tree->node_size - (rec + 2) * 2;
- end_rec_off = tree->node_size - (parent->num_recs + 1) * 2;
+ end_rec_off = tree->node_size -
+ (parent->num_recs + 1) * 2;
}
}
@@ -398,7 +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);
@@ -466,13 +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 bb5433608a4..3345c7553ed 100644
--- a/fs/hfsplus/btree.c
+++ b/fs/hfsplus/btree.c
@@ -15,6 +15,118 @@
#include "hfsplus_fs.h"
#include "hfsplus_raw.h"
+/*
+ * Initial source code of clump size calculation is gotten
+ * from http://opensource.apple.com/tarballs/diskdev_cmds/
+ */
+#define CLUMP_ENTRIES 15
+
+static short clumptbl[CLUMP_ENTRIES * 3] = {
+/*
+ * Volume Attributes Catalog Extents
+ * Size Clump (MB) Clump (MB) Clump (MB)
+ */
+ /* 1GB */ 4, 4, 4,
+ /* 2GB */ 6, 6, 4,
+ /* 4GB */ 8, 8, 4,
+ /* 8GB */ 11, 11, 5,
+ /*
+ * For volumes 16GB and larger, we want to make sure that a full OS
+ * install won't require fragmentation of the Catalog or Attributes
+ * B-trees. We do this by making the clump sizes sufficiently large,
+ * and by leaving a gap after the B-trees for them to grow into.
+ *
+ * For SnowLeopard 10A298, a FullNetInstall with all packages selected
+ * results in:
+ * Catalog B-tree Header
+ * nodeSize: 8192
+ * totalNodes: 31616
+ * freeNodes: 1978
+ * (used = 231.55 MB)
+ * Attributes B-tree Header
+ * nodeSize: 8192
+ * totalNodes: 63232
+ * freeNodes: 958
+ * (used = 486.52 MB)
+ *
+ * We also want Time Machine backup volumes to have a sufficiently
+ * large clump size to reduce fragmentation.
+ *
+ * The series of numbers for Catalog and Attribute form a geometric
+ * series. For Catalog (16GB to 512GB), each term is 8**(1/5) times
+ * the previous term. For Attributes (16GB to 512GB), each term is
+ * 4**(1/5) times the previous term. For 1TB to 16TB, each term is
+ * 2**(1/5) times the previous term.
+ */
+ /* 16GB */ 64, 32, 5,
+ /* 32GB */ 84, 49, 6,
+ /* 64GB */ 111, 74, 7,
+ /* 128GB */ 147, 111, 8,
+ /* 256GB */ 194, 169, 9,
+ /* 512GB */ 256, 256, 11,
+ /* 1TB */ 294, 294, 14,
+ /* 2TB */ 338, 338, 16,
+ /* 4TB */ 388, 388, 20,
+ /* 8TB */ 446, 446, 25,
+ /* 16TB */ 512, 512, 32
+};
+
+u32 hfsplus_calc_btree_clump_size(u32 block_size, u32 node_size,
+ u64 sectors, int file_id)
+{
+ u32 mod = max(node_size, block_size);
+ u32 clump_size;
+ int column;
+ int i;
+
+ /* Figure out which column of the above table to use for this file. */
+ switch (file_id) {
+ case HFSPLUS_ATTR_CNID:
+ column = 0;
+ break;
+ case HFSPLUS_CAT_CNID:
+ column = 1;
+ break;
+ default:
+ column = 2;
+ break;
+ }
+
+ /*
+ * The default clump size is 0.8% of the volume size. And
+ * it must also be a multiple of the node and block size.
+ */
+ if (sectors < 0x200000) {
+ clump_size = sectors << 2; /* 0.8 % */
+ if (clump_size < (8 * node_size))
+ clump_size = 8 * node_size;
+ } else {
+ /* turn exponent into table index... */
+ for (i = 0, sectors = sectors >> 22;
+ sectors && (i < CLUMP_ENTRIES - 1);
+ ++i, sectors = sectors >> 1) {
+ /* empty body */
+ }
+
+ clump_size = clumptbl[column + (i) * 3] * 1024 * 1024;
+ }
+
+ /*
+ * Round the clump size to a multiple of node and block size.
+ * NOTE: This rounds down.
+ */
+ clump_size /= mod;
+ clump_size *= mod;
+
+ /*
+ * Rounding down could have rounded down to 0 if the block size was
+ * greater than the clump size. If so, just use one block or node.
+ */
+ if (clump_size == 0)
+ clump_size = mod;
+
+ return clump_size;
+}
/* Get a reference to a B*Tree and do some initial checks */
struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
@@ -30,7 +142,7 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
if (!tree)
return NULL;
- init_MUTEX(&tree->tree_lock);
+ mutex_init(&tree->tree_lock);
spin_lock_init(&tree->hash_lock);
tree->sb = sb;
tree->cnid = id;
@@ -39,13 +151,19 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
goto free_tree;
tree->inode = inode;
+ if (!HFSPLUS_I(tree->inode)->first_blocks) {
+ pr_err("invalid btree extent records (0 size)\n");
+ goto free_inode;
+ }
+
mapping = tree->inode->i_mapping;
page = read_mapping_page(mapping, 0, NULL);
if (IS_ERR(page))
- goto free_tree;
+ goto free_inode;
/* Load the header */
- head = (struct hfs_btree_header_rec *)(kmap(page) + sizeof(struct hfs_bnode_desc));
+ head = (struct hfs_btree_header_rec *)(kmap(page) +
+ sizeof(struct hfs_bnode_desc));
tree->root = be32_to_cpu(head->root);
tree->leaf_count = be32_to_cpu(head->leaf_count);
tree->leaf_head = be32_to_cpu(head->leaf_head);
@@ -57,19 +175,55 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
tree->max_key_len = be16_to_cpu(head->max_key_len);
tree->depth = be16_to_cpu(head->depth);
- /* Set the correct compare function */
- if (id == HFSPLUS_EXT_CNID) {
+ /* Verify the tree and set the correct compare function */
+ switch (id) {
+ case HFSPLUS_EXT_CNID:
+ if (tree->max_key_len != HFSPLUS_EXT_KEYLEN - sizeof(u16)) {
+ pr_err("invalid extent max_key_len %d\n",
+ tree->max_key_len);
+ goto fail_page;
+ }
+ if (tree->attributes & HFS_TREE_VARIDXKEYS) {
+ pr_err("invalid extent btree flag\n");
+ goto fail_page;
+ }
+
tree->keycmp = hfsplus_ext_cmp_key;
- } else if (id == HFSPLUS_CAT_CNID) {
- if ((HFSPLUS_SB(sb).flags & HFSPLUS_SB_HFSX) &&
+ break;
+ case HFSPLUS_CAT_CNID:
+ if (tree->max_key_len != HFSPLUS_CAT_KEYLEN - sizeof(u16)) {
+ pr_err("invalid catalog max_key_len %d\n",
+ tree->max_key_len);
+ goto fail_page;
+ }
+ if (!(tree->attributes & HFS_TREE_VARIDXKEYS)) {
+ pr_err("invalid catalog btree flag\n");
+ goto fail_page;
+ }
+
+ if (test_bit(HFSPLUS_SB_HFSX, &HFSPLUS_SB(sb)->flags) &&
(head->key_type == HFSPLUS_KEY_BINARY))
tree->keycmp = hfsplus_cat_bin_cmp_key;
else {
tree->keycmp = hfsplus_cat_case_cmp_key;
- HFSPLUS_SB(sb).flags |= HFSPLUS_SB_CASEFOLD;
+ set_bit(HFSPLUS_SB_CASEFOLD, &HFSPLUS_SB(sb)->flags);
}
- } else {
- printk(KERN_ERR "hfs: unknown B*Tree requested\n");
+ break;
+ case HFSPLUS_ATTR_CNID:
+ if (tree->max_key_len != HFSPLUS_ATTR_KEYLEN - sizeof(u16)) {
+ pr_err("invalid attributes max_key_len %d\n",
+ tree->max_key_len);
+ goto fail_page;
+ }
+ tree->keycmp = hfsplus_attr_bin_cmp_key;
+ break;
+ default:
+ pr_err("unknown B*Tree requested\n");
+ goto fail_page;
+ }
+
+ if (!(tree->attributes & HFS_TREE_BIGKEYS)) {
+ pr_err("invalid btree flag\n");
goto fail_page;
}
@@ -78,19 +232,23 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
goto fail_page;
if (!tree->node_count)
goto fail_page;
+
tree->node_size_shift = ffs(size) - 1;
- tree->pages_per_bnode = (tree->node_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
+ tree->pages_per_bnode =
+ (tree->node_size + PAGE_CACHE_SIZE - 1) >>
+ PAGE_CACHE_SHIFT;
kunmap(page);
page_cache_release(page);
return tree;
fail_page:
- tree->inode->i_mapping->a_ops = &hfsplus_aops;
page_cache_release(page);
- free_tree:
+ free_inode:
+ tree->inode->i_mapping->a_ops = &hfsplus_aops;
iput(tree->inode);
+ free_tree:
kfree(tree);
return NULL;
}
@@ -108,8 +266,10 @@ void hfs_btree_close(struct hfs_btree *tree)
while ((node = tree->node_hash[i])) {
tree->node_hash[i] = node->next_hash;
if (atomic_read(&node->refcnt))
- printk(KERN_CRIT "hfs: node %d:%d still has %d user(s)!\n",
- node->tree->cnid, node->this, atomic_read(&node->refcnt));
+ pr_crit("node %d:%d "
+ "still has %d user(s)!\n",
+ node->tree->cnid, node->this,
+ atomic_read(&node->refcnt));
hfs_bnode_free(node);
tree->node_hash_cnt--;
}
@@ -118,7 +278,7 @@ void hfs_btree_close(struct hfs_btree *tree)
kfree(tree);
}
-void hfs_btree_write(struct hfs_btree *tree)
+int hfs_btree_write(struct hfs_btree *tree)
{
struct hfs_btree_header_rec *head;
struct hfs_bnode *node;
@@ -127,10 +287,11 @@ void hfs_btree_write(struct hfs_btree *tree)
node = hfs_bnode_find(tree, 0);
if (IS_ERR(node))
/* panic? */
- return;
+ return -EIO;
/* Load the header */
page = node->page[0];
- head = (struct hfs_btree_header_rec *)(kmap(page) + sizeof(struct hfs_bnode_desc));
+ head = (struct hfs_btree_header_rec *)(kmap(page) +
+ sizeof(struct hfs_bnode_desc));
head->root = cpu_to_be32(tree->root);
head->leaf_count = cpu_to_be32(tree->leaf_count);
@@ -144,6 +305,7 @@ void hfs_btree_write(struct hfs_btree *tree)
kunmap(page);
set_page_dirty(page);
hfs_bnode_put(node);
+ return 0;
}
static struct hfs_bnode *hfs_bmap_new_bmap(struct hfs_bnode *prev, u32 idx)
@@ -184,23 +346,26 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree)
struct hfs_bnode *node, *next_node;
struct page **pagep;
u32 nidx, idx;
- u16 off, len;
+ unsigned off;
+ u16 off16;
+ u16 len;
u8 *data, byte, m;
int i;
while (!tree->free_nodes) {
struct inode *inode = tree->inode;
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
u32 count;
int res;
- res = hfsplus_file_extend(inode);
+ res = hfsplus_file_extend(inode, hfs_bnode_need_zeroout(tree));
if (res)
return ERR_PTR(res);
- HFSPLUS_I(inode).phys_size = inode->i_size =
- (loff_t)HFSPLUS_I(inode).alloc_blocks <<
- HFSPLUS_SB(tree->sb).alloc_blksz_shift;
- HFSPLUS_I(inode).fs_blocks = HFSPLUS_I(inode).alloc_blocks <<
- HFSPLUS_SB(tree->sb).fs_shift;
+ hip->phys_size = inode->i_size =
+ (loff_t)hip->alloc_blocks <<
+ HFSPLUS_SB(tree->sb)->alloc_blksz_shift;
+ hip->fs_blocks =
+ hip->alloc_blocks << HFSPLUS_SB(tree->sb)->fs_shift;
inode_set_bytes(inode, inode->i_size);
count = inode->i_size >> tree->node_size_shift;
tree->free_nodes = count - tree->node_count;
@@ -211,7 +376,8 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree)
node = hfs_bnode_find(tree, nidx);
if (IS_ERR(node))
return node;
- len = hfs_brec_lenoff(node, 2, &off);
+ len = hfs_brec_lenoff(node, 2, &off16);
+ off = off16;
off += node->page_offset;
pagep = node->page + (off >> PAGE_CACHE_SHIFT);
@@ -232,7 +398,8 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree)
tree->free_nodes--;
mark_inode_dirty(tree->inode);
hfs_bnode_put(node);
- return hfs_bnode_create(tree, idx);
+ return hfs_bnode_create(tree,
+ idx);
}
}
}
@@ -247,7 +414,7 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree)
kunmap(*pagep);
nidx = node->next;
if (!nidx) {
- printk(KERN_DEBUG "hfs: create new bmap node...\n");
+ hfs_dbg(BNODE_MOD, "create new bmap node\n");
next_node = hfs_bmap_new_bmap(node, idx);
} else
next_node = hfs_bnode_find(tree, nidx);
@@ -256,7 +423,8 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree)
return next_node;
node = next_node;
- len = hfs_brec_lenoff(node, 0, &off);
+ len = hfs_brec_lenoff(node, 0, &off16);
+ off = off16;
off += node->page_offset;
pagep = node->page + (off >> PAGE_CACHE_SHIFT);
data = kmap(*pagep);
@@ -272,7 +440,7 @@ void hfs_bmap_free(struct hfs_bnode *node)
u32 nidx;
u8 *data, byte, m;
- dprint(DBG_BNODE_MOD, "btree_free_node: %u\n", node->this);
+ hfs_dbg(BNODE_MOD, "btree_free_node: %u\n", node->this);
BUG_ON(!node->this);
tree = node->tree;
nidx = node->this;
@@ -288,7 +456,9 @@ void hfs_bmap_free(struct hfs_bnode *node)
hfs_bnode_put(node);
if (!i) {
/* panic */;
- printk(KERN_CRIT "hfs: unable to free bnode %u. bmap not found!\n", node->this);
+ pr_crit("unable to free bnode %u. "
+ "bmap not found!\n",
+ node->this);
return;
}
node = hfs_bnode_find(tree, i);
@@ -296,7 +466,9 @@ void hfs_bmap_free(struct hfs_bnode *node)
return;
if (node->type != HFS_NODE_MAP) {
/* panic */;
- printk(KERN_CRIT "hfs: invalid bmap found! (%u,%d)\n", node->this, node->type);
+ pr_crit("invalid bmap found! "
+ "(%u,%d)\n",
+ node->this, node->type);
hfs_bnode_put(node);
return;
}
@@ -309,7 +481,9 @@ void hfs_bmap_free(struct hfs_bnode *node)
m = 1 << (~nidx & 7);
byte = data[off];
if (!(byte & m)) {
- printk(KERN_CRIT "hfs: trying to free free bnode %u(%d)\n", node->this, node->type);
+ pr_crit("trying to free free bnode "
+ "%u(%d)\n",
+ node->this, node->type);
kunmap(page);
hfs_bnode_put(node);
return;
diff --git a/fs/hfsplus/catalog.c b/fs/hfsplus/catalog.c
index ba117c445e7..32602c667b4 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;
@@ -67,7 +68,7 @@ static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent,
key->key_len = cpu_to_be16(6 + ustrlen);
}
-static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms)
+void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms)
{
if (inode->i_flags & S_IMMUTABLE)
perms->rootflags |= HFSPLUS_FLG_IMMUTABLE;
@@ -77,29 +78,41 @@ static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms)
perms->rootflags |= HFSPLUS_FLG_APPEND;
else
perms->rootflags &= ~HFSPLUS_FLG_APPEND;
- HFSPLUS_I(inode).rootflags = perms->rootflags;
- HFSPLUS_I(inode).userflags = perms->userflags;
+
+ perms->userflags = HFSPLUS_I(inode)->userflags;
perms->mode = cpu_to_be16(inode->i_mode);
- perms->owner = cpu_to_be32(inode->i_uid);
- perms->group = cpu_to_be32(inode->i_gid);
+ perms->owner = cpu_to_be32(i_uid_read(inode));
+ perms->group = cpu_to_be32(i_gid_read(inode));
+
+ if (S_ISREG(inode->i_mode))
+ perms->dev = cpu_to_be32(inode->i_nlink);
+ else if (S_ISBLK(inode->i_mode) || S_ISCHR(inode->i_mode))
+ perms->dev = cpu_to_be32(inode->i_rdev);
+ else
+ perms->dev = 0;
}
-static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, u32 cnid, struct inode *inode)
+static int hfsplus_cat_build_record(hfsplus_cat_entry *entry,
+ u32 cnid, struct inode *inode)
{
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
+
if (S_ISDIR(inode->i_mode)) {
struct hfsplus_cat_folder *folder;
folder = &entry->folder;
memset(folder, 0, sizeof(*folder));
folder->type = cpu_to_be16(HFSPLUS_FOLDER);
+ if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags))
+ folder->flags |= cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT);
folder->id = cpu_to_be32(inode->i_ino);
- HFSPLUS_I(inode).create_date =
+ HFSPLUS_I(inode)->create_date =
folder->create_date =
folder->content_mod_date =
folder->attribute_mod_date =
folder->access_date = hfsp_now2mt();
- hfsplus_set_perms(inode, &folder->permissions);
- if (inode == HFSPLUS_SB(inode->i_sb).hidden_dir)
+ hfsplus_cat_set_perms(inode, &folder->permissions);
+ if (inode == sbi->hidden_dir)
/* invisible and namelocked */
folder->user_info.frFlags = cpu_to_be16(0x5000);
return sizeof(*folder);
@@ -111,28 +124,40 @@ static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, u32 cnid, struct i
file->type = cpu_to_be16(HFSPLUS_FILE);
file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS);
file->id = cpu_to_be32(cnid);
- HFSPLUS_I(inode).create_date =
+ HFSPLUS_I(inode)->create_date =
file->create_date =
file->content_mod_date =
file->attribute_mod_date =
file->access_date = hfsp_now2mt();
if (cnid == inode->i_ino) {
- hfsplus_set_perms(inode, &file->permissions);
+ hfsplus_cat_set_perms(inode, &file->permissions);
if (S_ISLNK(inode->i_mode)) {
- file->user_info.fdType = cpu_to_be32(HFSP_SYMLINK_TYPE);
- file->user_info.fdCreator = cpu_to_be32(HFSP_SYMLINK_CREATOR);
+ file->user_info.fdType =
+ cpu_to_be32(HFSP_SYMLINK_TYPE);
+ file->user_info.fdCreator =
+ cpu_to_be32(HFSP_SYMLINK_CREATOR);
} else {
- file->user_info.fdType = cpu_to_be32(HFSPLUS_SB(inode->i_sb).type);
- file->user_info.fdCreator = cpu_to_be32(HFSPLUS_SB(inode->i_sb).creator);
+ file->user_info.fdType =
+ cpu_to_be32(sbi->type);
+ file->user_info.fdCreator =
+ cpu_to_be32(sbi->creator);
}
- if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
- file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
+ if (HFSPLUS_FLG_IMMUTABLE &
+ (file->permissions.rootflags |
+ file->permissions.userflags))
+ file->flags |=
+ cpu_to_be16(HFSPLUS_FILE_LOCKED);
} else {
- file->user_info.fdType = cpu_to_be32(HFSP_HARDLINK_TYPE);
- file->user_info.fdCreator = cpu_to_be32(HFSP_HFSPLUS_CREATOR);
- file->user_info.fdFlags = cpu_to_be16(0x100);
- file->create_date = HFSPLUS_I(HFSPLUS_SB(inode->i_sb).hidden_dir).create_date;
- file->permissions.dev = cpu_to_be32(HFSPLUS_I(inode).dev);
+ file->user_info.fdType =
+ cpu_to_be32(HFSP_HARDLINK_TYPE);
+ file->user_info.fdCreator =
+ cpu_to_be32(HFSP_HFSPLUS_CREATOR);
+ file->user_info.fdFlags =
+ cpu_to_be16(0x100);
+ file->create_date =
+ HFSPLUS_I(sbi->hidden_dir)->create_date;
+ file->permissions.dev =
+ cpu_to_be32(HFSPLUS_I(inode)->linkid);
}
return sizeof(*file);
}
@@ -145,7 +170,8 @@ 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;
}
@@ -164,32 +190,72 @@ int hfsplus_find_cat(struct super_block *sb, u32 cnid,
type = be16_to_cpu(tmp.type);
if (type != HFSPLUS_FOLDER_THREAD && type != HFSPLUS_FILE_THREAD) {
- printk(KERN_ERR "hfs: found bad thread record in catalog\n");
+ pr_err("found bad thread record in catalog\n");
+ return -EIO;
+ }
+
+ if (be16_to_cpu(tmp.thread.nodeName.length) > 255) {
+ pr_err("catalog name length corrupted\n");
return -EIO;
}
- hfsplus_cat_build_key_uni(fd->search_key, be32_to_cpu(tmp.thread.parentID),
- &tmp.thread.nodeName);
- return hfs_brec_find(fd);
+ hfsplus_cat_build_key_uni(fd->search_key,
+ be32_to_cpu(tmp.thread.parentID),
+ &tmp.thread.nodeName);
+ return hfs_brec_find(fd, hfs_find_rec_by_key);
+}
+
+static void hfsplus_subfolders_inc(struct inode *dir)
+{
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
+
+ if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) {
+ /*
+ * Increment subfolder count. Note, the value is only meaningful
+ * for folders with HFSPLUS_HAS_FOLDER_COUNT flag set.
+ */
+ HFSPLUS_I(dir)->subfolders++;
+ }
+}
+
+static void hfsplus_subfolders_dec(struct inode *dir)
+{
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
+
+ if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) {
+ /*
+ * Decrement subfolder count. Note, the value is only meaningful
+ * for folders with HFSPLUS_HAS_FOLDER_COUNT flag set.
+ *
+ * Check for zero. Some subfolders may have been created
+ * by an implementation ignorant of this counter.
+ */
+ if (HFSPLUS_I(dir)->subfolders)
+ HFSPLUS_I(dir)->subfolders--;
+ }
}
-int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str, struct inode *inode)
+int hfsplus_create_cat(u32 cnid, struct inode *dir,
+ struct qstr *str, struct inode *inode)
{
+ struct super_block *sb = dir->i_sb;
struct hfs_find_data fd;
- struct super_block *sb;
hfsplus_cat_entry entry;
int entry_size;
int err;
- dprint(DBG_CAT_MOD, "create_cat: %s,%u(%d)\n", str->name, cnid, inode->i_nlink);
- sb = dir->i_sb;
- hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
+ hfs_dbg(CAT_MOD, "create_cat: %s,%u(%d)\n",
+ str->name, cnid, inode->i_nlink);
+ err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
+ if (err)
+ return err;
hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
- entry_size = hfsplus_fill_cat_thread(sb, &entry, S_ISDIR(inode->i_mode) ?
+ entry_size = hfsplus_fill_cat_thread(sb, &entry,
+ S_ISDIR(inode->i_mode) ?
HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
- dir->i_ino, str);
- err = hfs_brec_find(&fd);
+ dir->i_ino, str);
+ err = hfs_brec_find(&fd, hfs_find_rec_by_key);
if (err != -ENOENT) {
if (!err)
err = -EEXIST;
@@ -201,7 +267,7 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str, struct ino
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)
@@ -213,14 +279,17 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str, struct ino
goto err1;
dir->i_size++;
+ if (S_ISDIR(inode->i_mode))
+ hfsplus_subfolders_inc(dir);
dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
- mark_inode_dirty(dir);
+ hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);
+
hfs_find_exit(&fd);
return 0;
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);
@@ -229,35 +298,40 @@ err2:
int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
{
- struct super_block *sb;
+ struct super_block *sb = dir->i_sb;
struct hfs_find_data fd;
struct hfsplus_fork_raw fork;
struct list_head *pos;
int err, off;
u16 type;
- dprint(DBG_CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
- sb = dir->i_sb;
- hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
+ hfs_dbg(CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
+ err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
+ if (err)
+ return err;
if (!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;
- off = fd.entryoffset + offsetof(struct hfsplus_cat_thread, nodeName);
+ off = fd.entryoffset +
+ offsetof(struct hfsplus_cat_thread, nodeName);
fd.search_key->cat.parent = cpu_to_be32(dir->i_ino);
- hfs_bnode_read(fd.bnode, &fd.search_key->cat.name.length, off, 2);
+ hfs_bnode_read(fd.bnode,
+ &fd.search_key->cat.name.length, off, 2);
len = be16_to_cpu(fd.search_key->cat.name.length) * 2;
- hfs_bnode_read(fd.bnode, &fd.search_key->cat.name.unicode, off + 2, len);
+ hfs_bnode_read(fd.bnode,
+ &fd.search_key->cat.name.unicode,
+ off + 2, len);
fd.search_key->key_len = cpu_to_be16(6 + len);
} 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;
@@ -269,12 +343,13 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_DATA);
#endif
- off = fd.entryoffset + offsetof(struct hfsplus_cat_file, rsrc_fork);
+ off = fd.entryoffset +
+ offsetof(struct hfsplus_cat_file, rsrc_fork);
hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC);
}
- list_for_each(pos, &HFSPLUS_I(dir).open_dir_list) {
+ list_for_each(pos, &HFSPLUS_I(dir)->open_dir_list) {
struct hfsplus_readdir_data *rd =
list_entry(pos, struct hfsplus_readdir_data, list);
if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
@@ -286,7 +361,7 @@ 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;
@@ -295,8 +370,16 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
goto out;
dir->i_size--;
+ if (type == HFSPLUS_FOLDER)
+ hfsplus_subfolders_dec(dir);
dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
- mark_inode_dirty(dir);
+ 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);
@@ -307,30 +390,37 @@ int hfsplus_rename_cat(u32 cnid,
struct inode *src_dir, struct qstr *src_name,
struct inode *dst_dir, struct qstr *dst_name)
{
- struct super_block *sb;
+ struct super_block *sb = src_dir->i_sb;
struct hfs_find_data src_fd, dst_fd;
hfsplus_cat_entry entry;
int entry_size, type;
- int err = 0;
+ int err;
- dprint(DBG_CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n", cnid, src_dir->i_ino, src_name->name,
+ hfs_dbg(CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n",
+ cnid, src_dir->i_ino, src_name->name,
dst_dir->i_ino, dst_name->name);
- sb = src_dir->i_sb;
- hfs_find_init(HFSPLUS_SB(sb).cat_tree, &src_fd);
+ err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &src_fd);
+ if (err)
+ return err;
dst_fd = src_fd;
/* 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) {
+ err = -EIO;
+ goto out;
+ }
hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
src_fd.entrylength);
+ type = be16_to_cpu(entry.type);
/* 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;
@@ -341,24 +431,26 @@ int hfsplus_rename_cat(u32 cnid,
if (err)
goto out;
dst_dir->i_size++;
+ if (type == HFSPLUS_FOLDER)
+ hfsplus_subfolders_inc(dst_dir);
dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC;
- mark_inode_dirty(dst_dir);
/* 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);
if (err)
goto out;
src_dir->i_size--;
+ if (type == HFSPLUS_FOLDER)
+ hfsplus_subfolders_dec(src_dir);
src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC;
- mark_inode_dirty(src_dir);
/* 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);
@@ -368,14 +460,18 @@ int hfsplus_rename_cat(u32 cnid,
/* create new thread entry */
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);
+ entry_size = hfsplus_fill_cat_thread(sb, &entry, type,
+ dst_dir->i_ino, dst_name);
+ err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
if (err != -ENOENT) {
if (!err)
err = -EEXIST;
goto out;
}
err = hfs_brec_insert(&dst_fd, &entry, entry_size);
+
+ hfsplus_mark_inode_dirty(dst_dir, HFSPLUS_I_CAT_DIRTY);
+ hfsplus_mark_inode_dirty(src_dir, HFSPLUS_I_CAT_DIRTY);
out:
hfs_bnode_put(dst_fd.bnode);
hfs_find_exit(&src_fd);
diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index 29683645fa0..610a3260bef 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -12,9 +12,12 @@
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/random.h>
+#include <linux/nls.h>
#include "hfsplus_fs.h"
#include "hfsplus_raw.h"
+#include "xattr.h"
+#include "acl.h"
static inline void hfsplus_instantiate(struct dentry *dentry,
struct inode *inode, u32 cnid)
@@ -25,7 +28,7 @@ static inline void hfsplus_instantiate(struct dentry *dentry,
/* Find the entry inside dir named dentry->d_name */
static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
+ unsigned int flags)
{
struct inode *inode = NULL;
struct hfs_find_data fd;
@@ -37,9 +40,10 @@ static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
sb = dir->i_sb;
- dentry->d_op = &hfsplus_dentry_operations;
dentry->d_fsdata = NULL;
- hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
+ err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
+ if (err)
+ return ERR_PTR(err);
hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, &dentry->d_name);
again:
err = hfs_brec_read(&fd, &entry, sizeof(entry));
@@ -66,11 +70,17 @@ again:
goto fail;
}
cnid = be32_to_cpu(entry.file.id);
- if (entry.file.user_info.fdType == cpu_to_be32(HFSP_HARDLINK_TYPE) &&
- entry.file.user_info.fdCreator == cpu_to_be32(HFSP_HFSPLUS_CREATOR) &&
- (entry.file.create_date == HFSPLUS_I(HFSPLUS_SB(sb).hidden_dir).create_date ||
- entry.file.create_date == HFSPLUS_I(sb->s_root->d_inode).create_date) &&
- HFSPLUS_SB(sb).hidden_dir) {
+ if (entry.file.user_info.fdType ==
+ cpu_to_be32(HFSP_HARDLINK_TYPE) &&
+ entry.file.user_info.fdCreator ==
+ cpu_to_be32(HFSP_HFSPLUS_CREATOR) &&
+ (entry.file.create_date ==
+ HFSPLUS_I(HFSPLUS_SB(sb)->hidden_dir)->
+ create_date ||
+ entry.file.create_date ==
+ HFSPLUS_I(sb->s_root->d_inode)->
+ create_date) &&
+ HFSPLUS_SB(sb)->hidden_dir) {
struct qstr str;
char name[32];
@@ -83,16 +93,19 @@ again:
linkid = 0;
} else {
dentry->d_fsdata = (void *)(unsigned long)cnid;
- linkid = be32_to_cpu(entry.file.permissions.dev);
+ linkid =
+ be32_to_cpu(entry.file.permissions.dev);
str.len = sprintf(name, "iNode%d", linkid);
str.name = name;
- hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_SB(sb).hidden_dir->i_ino, &str);
+ hfsplus_cat_build_key(sb, fd.search_key,
+ HFSPLUS_SB(sb)->hidden_dir->i_ino,
+ &str);
goto again;
}
} else if (!dentry->d_fsdata)
dentry->d_fsdata = (void *)(unsigned long)cnid;
} else {
- printk(KERN_ERR "hfs: invalid catalog entry type in lookup\n");
+ pr_err("invalid catalog entry type in lookup\n");
err = -EIO;
goto fail;
}
@@ -101,7 +114,7 @@ again:
if (IS_ERR(inode))
return ERR_CAST(inode);
if (S_ISREG(inode->i_mode))
- HFSPLUS_I(inode).dev = linkid;
+ HFSPLUS_I(inode)->linkid = linkid;
out:
d_add(dentry, inode);
return NULL;
@@ -110,117 +123,154 @@ fail:
return ERR_PTR(err);
}
-static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir)
+static int hfsplus_readdir(struct file *file, struct dir_context *ctx)
{
- struct inode *inode = filp->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(file);
struct super_block *sb = inode->i_sb;
int len, err;
- char strbuf[HFSPLUS_MAX_STRLEN + 1];
+ char *strbuf;
hfsplus_cat_entry entry;
struct hfs_find_data fd;
struct hfsplus_readdir_data *rd;
u16 type;
- if (filp->f_pos >= inode->i_size)
+ if (file->f_pos >= inode->i_size)
return 0;
- hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
+ err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
+ if (err)
+ return err;
+ strbuf = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_MAX_STRLEN + 1, GFP_KERNEL);
+ if (!strbuf) {
+ err = -ENOMEM;
+ goto out;
+ }
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;
- switch ((u32)filp->f_pos) {
- case 0:
+ if (ctx->pos == 0) {
/* This is completely artificial... */
- if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR))
+ if (!dir_emit_dot(file, ctx))
+ goto out;
+ ctx->pos = 1;
+ }
+ if (ctx->pos == 1) {
+ if (fd.entrylength > sizeof(entry) || fd.entrylength < 0) {
+ err = -EIO;
goto out;
- filp->f_pos++;
- /* fall through */
- case 1:
- hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength);
+ }
+
+ hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
+ fd.entrylength);
if (be16_to_cpu(entry.type) != HFSPLUS_FOLDER_THREAD) {
- printk(KERN_ERR "hfs: bad catalog folder thread\n");
+ pr_err("bad catalog folder thread\n");
err = -EIO;
goto out;
}
if (fd.entrylength < HFSPLUS_MIN_THREAD_SZ) {
- printk(KERN_ERR "hfs: truncated catalog thread\n");
+ pr_err("truncated catalog thread\n");
err = -EIO;
goto out;
}
- if (filldir(dirent, "..", 2, 1,
+ if (!dir_emit(ctx, "..", 2,
be32_to_cpu(entry.thread.parentID), DT_DIR))
goto out;
- filp->f_pos++;
- /* fall through */
- default:
- if (filp->f_pos >= inode->i_size)
- goto out;
- err = hfs_brec_goto(&fd, filp->f_pos - 1);
- if (err)
- goto out;
+ ctx->pos = 2;
}
-
+ if (ctx->pos >= inode->i_size)
+ goto out;
+ err = hfs_brec_goto(&fd, ctx->pos - 1);
+ if (err)
+ goto out;
for (;;) {
if (be32_to_cpu(fd.key->cat.parent) != inode->i_ino) {
- printk(KERN_ERR "hfs: walked past end of dir\n");
+ pr_err("walked past end of dir\n");
err = -EIO;
goto out;
}
- hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength);
+
+ if (fd.entrylength > sizeof(entry) || fd.entrylength < 0) {
+ err = -EIO;
+ goto out;
+ }
+
+ hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
+ fd.entrylength);
type = be16_to_cpu(entry.type);
- len = HFSPLUS_MAX_STRLEN;
+ len = NLS_MAX_CHARSET_SIZE * HFSPLUS_MAX_STRLEN;
err = hfsplus_uni2asc(sb, &fd.key->cat.name, strbuf, &len);
if (err)
goto out;
if (type == HFSPLUS_FOLDER) {
- if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) {
- printk(KERN_ERR "hfs: small dir entry\n");
+ if (fd.entrylength <
+ sizeof(struct hfsplus_cat_folder)) {
+ pr_err("small dir entry\n");
err = -EIO;
goto out;
}
- if (HFSPLUS_SB(sb).hidden_dir &&
- HFSPLUS_SB(sb).hidden_dir->i_ino == be32_to_cpu(entry.folder.id))
+ if (HFSPLUS_SB(sb)->hidden_dir &&
+ HFSPLUS_SB(sb)->hidden_dir->i_ino ==
+ be32_to_cpu(entry.folder.id))
goto next;
- if (filldir(dirent, strbuf, len, filp->f_pos,
+ if (!dir_emit(ctx, strbuf, len,
be32_to_cpu(entry.folder.id), DT_DIR))
break;
} else if (type == HFSPLUS_FILE) {
+ u16 mode;
+ unsigned type = DT_UNKNOWN;
+
if (fd.entrylength < sizeof(struct hfsplus_cat_file)) {
- printk(KERN_ERR "hfs: small file entry\n");
+ pr_err("small file entry\n");
err = -EIO;
goto out;
}
- if (filldir(dirent, strbuf, len, filp->f_pos,
- be32_to_cpu(entry.file.id), DT_REG))
+
+ mode = be16_to_cpu(entry.file.permissions.mode);
+ if (S_ISREG(mode))
+ type = DT_REG;
+ else if (S_ISLNK(mode))
+ type = DT_LNK;
+ else if (S_ISFIFO(mode))
+ type = DT_FIFO;
+ else if (S_ISCHR(mode))
+ type = DT_CHR;
+ else if (S_ISBLK(mode))
+ type = DT_BLK;
+ else if (S_ISSOCK(mode))
+ type = DT_SOCK;
+
+ if (!dir_emit(ctx, strbuf, len,
+ be32_to_cpu(entry.file.id), type))
break;
} else {
- printk(KERN_ERR "hfs: bad catalog entry type\n");
+ pr_err("bad catalog entry type\n");
err = -EIO;
goto out;
}
- next:
- filp->f_pos++;
- if (filp->f_pos >= inode->i_size)
+next:
+ ctx->pos++;
+ if (ctx->pos >= inode->i_size)
goto out;
err = hfs_brec_goto(&fd, 1);
if (err)
goto out;
}
- rd = filp->private_data;
+ rd = file->private_data;
if (!rd) {
rd = kmalloc(sizeof(struct hfsplus_readdir_data), GFP_KERNEL);
if (!rd) {
err = -ENOMEM;
goto out;
}
- filp->private_data = rd;
- rd->file = filp;
- list_add(&rd->list, &HFSPLUS_I(inode).open_dir_list);
+ file->private_data = rd;
+ rd->file = file;
+ list_add(&rd->list, &HFSPLUS_I(inode)->open_dir_list);
}
memcpy(&rd->key, fd.key, sizeof(struct hfsplus_cat_key));
out:
+ kfree(strbuf);
hfs_find_exit(&fd);
return err;
}
@@ -229,38 +279,18 @@ static int hfsplus_dir_release(struct inode *inode, struct file *file)
{
struct hfsplus_readdir_data *rd = file->private_data;
if (rd) {
+ mutex_lock(&inode->i_mutex);
list_del(&rd->list);
+ mutex_unlock(&inode->i_mutex);
kfree(rd);
}
return 0;
}
-static int hfsplus_create(struct inode *dir, struct dentry *dentry, int mode,
- struct nameidata *nd)
-{
- struct inode *inode;
- int res;
-
- inode = hfsplus_new_inode(dir->i_sb, mode);
- if (!inode)
- return -ENOSPC;
-
- res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
- if (res) {
- inode->i_nlink = 0;
- hfsplus_delete_inode(inode);
- iput(inode);
- return res;
- }
- hfsplus_instantiate(dentry, inode, inode->i_ino);
- mark_inode_dirty(inode);
- return 0;
-}
-
static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir,
struct dentry *dst_dentry)
{
- struct super_block *sb = dst_dir->i_sb;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(dst_dir->i_sb);
struct inode *inode = src_dentry->d_inode;
struct inode *src_dir = src_dentry->d_parent->d_inode;
struct qstr str;
@@ -270,7 +300,10 @@ static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir,
if (HFSPLUS_IS_RSRC(inode))
return -EPERM;
+ if (!S_ISREG(inode->i_mode))
+ return -EPERM;
+ mutex_lock(&sbi->vh_mutex);
if (inode->i_ino == (u32)(unsigned long)src_dentry->d_fsdata) {
for (;;) {
get_random_bytes(&id, sizeof(cnid));
@@ -279,40 +312,42 @@ static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir,
str.len = sprintf(name, "iNode%d", id);
res = hfsplus_rename_cat(inode->i_ino,
src_dir, &src_dentry->d_name,
- HFSPLUS_SB(sb).hidden_dir, &str);
+ sbi->hidden_dir, &str);
if (!res)
break;
if (res != -EEXIST)
- return res;
+ goto out;
}
- HFSPLUS_I(inode).dev = id;
- cnid = HFSPLUS_SB(sb).next_cnid++;
+ HFSPLUS_I(inode)->linkid = id;
+ cnid = sbi->next_cnid++;
src_dentry->d_fsdata = (void *)(unsigned long)cnid;
- res = hfsplus_create_cat(cnid, src_dir, &src_dentry->d_name, inode);
+ res = hfsplus_create_cat(cnid, src_dir,
+ &src_dentry->d_name, inode);
if (res)
/* panic? */
- return res;
- HFSPLUS_SB(sb).file_count++;
+ goto out;
+ sbi->file_count++;
}
- cnid = HFSPLUS_SB(sb).next_cnid++;
+ cnid = sbi->next_cnid++;
res = hfsplus_create_cat(cnid, dst_dir, &dst_dentry->d_name, inode);
if (res)
- return res;
+ goto out;
inc_nlink(inode);
hfsplus_instantiate(dst_dentry, inode, cnid);
- atomic_inc(&inode->i_count);
+ ihold(inode);
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
- HFSPLUS_SB(sb).file_count++;
- sb->s_dirt = 1;
-
- return 0;
+ sbi->file_count++;
+ hfsplus_mark_mdb_dirty(dst_dir->i_sb);
+out:
+ mutex_unlock(&sbi->vh_mutex);
+ return res;
}
static int hfsplus_unlink(struct inode *dir, struct dentry *dentry)
{
- struct super_block *sb = dir->i_sb;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
struct inode *inode = dentry->d_inode;
struct qstr str;
char name[32];
@@ -322,134 +357,165 @@ static int hfsplus_unlink(struct inode *dir, struct dentry *dentry)
if (HFSPLUS_IS_RSRC(inode))
return -EPERM;
+ mutex_lock(&sbi->vh_mutex);
cnid = (u32)(unsigned long)dentry->d_fsdata;
if (inode->i_ino == cnid &&
- atomic_read(&HFSPLUS_I(inode).opencnt)) {
+ atomic_read(&HFSPLUS_I(inode)->opencnt)) {
str.name = name;
str.len = sprintf(name, "temp%lu", inode->i_ino);
res = hfsplus_rename_cat(inode->i_ino,
dir, &dentry->d_name,
- HFSPLUS_SB(sb).hidden_dir, &str);
- if (!res)
+ sbi->hidden_dir, &str);
+ if (!res) {
inode->i_flags |= S_DEAD;
- return res;
+ drop_nlink(inode);
+ }
+ goto out;
}
res = hfsplus_delete_cat(cnid, dir, &dentry->d_name);
if (res)
- return res;
+ goto out;
if (inode->i_nlink > 0)
drop_nlink(inode);
- hfsplus_delete_inode(inode);
- if (inode->i_ino != cnid && !inode->i_nlink) {
- if (!atomic_read(&HFSPLUS_I(inode).opencnt)) {
- res = hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL);
- if (!res)
- hfsplus_delete_inode(inode);
+ if (inode->i_ino == cnid)
+ clear_nlink(inode);
+ if (!inode->i_nlink) {
+ if (inode->i_ino != cnid) {
+ sbi->file_count--;
+ if (!atomic_read(&HFSPLUS_I(inode)->opencnt)) {
+ res = hfsplus_delete_cat(inode->i_ino,
+ sbi->hidden_dir,
+ NULL);
+ if (!res)
+ hfsplus_delete_inode(inode);
+ } else
+ inode->i_flags |= S_DEAD;
} else
- inode->i_flags |= S_DEAD;
+ hfsplus_delete_inode(inode);
} else
- clear_nlink(inode);
+ sbi->file_count--;
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
-
+out:
+ mutex_unlock(&sbi->vh_mutex);
return res;
}
-static int hfsplus_mkdir(struct inode *dir, struct dentry *dentry, int mode)
-{
- struct inode *inode;
- int res;
-
- inode = hfsplus_new_inode(dir->i_sb, S_IFDIR | mode);
- if (!inode)
- return -ENOSPC;
-
- res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
- if (res) {
- inode->i_nlink = 0;
- hfsplus_delete_inode(inode);
- iput(inode);
- return res;
- }
- hfsplus_instantiate(dentry, inode, inode->i_ino);
- mark_inode_dirty(inode);
- return 0;
-}
-
static int hfsplus_rmdir(struct inode *dir, struct dentry *dentry)
{
- struct inode *inode;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
+ struct inode *inode = dentry->d_inode;
int res;
- inode = dentry->d_inode;
if (inode->i_size != 2)
return -ENOTEMPTY;
+
+ mutex_lock(&sbi->vh_mutex);
res = hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name);
if (res)
- return res;
+ goto out;
clear_nlink(inode);
inode->i_ctime = CURRENT_TIME_SEC;
hfsplus_delete_inode(inode);
mark_inode_dirty(inode);
- return 0;
+out:
+ mutex_unlock(&sbi->vh_mutex);
+ return res;
}
static int hfsplus_symlink(struct inode *dir, struct dentry *dentry,
const char *symname)
{
- struct super_block *sb;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
struct inode *inode;
- int res;
+ int res = -ENOSPC;
- sb = dir->i_sb;
- inode = hfsplus_new_inode(sb, S_IFLNK | S_IRWXUGO);
+ mutex_lock(&sbi->vh_mutex);
+ inode = hfsplus_new_inode(dir->i_sb, S_IFLNK | S_IRWXUGO);
if (!inode)
- return -ENOSPC;
+ goto out;
res = page_symlink(inode, symname, strlen(symname) + 1);
- if (res) {
- inode->i_nlink = 0;
- hfsplus_delete_inode(inode);
- iput(inode);
- return res;
- }
+ if (res)
+ goto out_err;
- mark_inode_dirty(inode);
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
-
- if (!res) {
- hfsplus_instantiate(dentry, inode, inode->i_ino);
- mark_inode_dirty(inode);
+ 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;
+
+out_err:
+ clear_nlink(inode);
+ hfsplus_delete_inode(inode);
+ iput(inode);
+out:
+ mutex_unlock(&sbi->vh_mutex);
return res;
}
static int hfsplus_mknod(struct inode *dir, struct dentry *dentry,
- int mode, dev_t rdev)
+ umode_t mode, dev_t rdev)
{
- struct super_block *sb;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
struct inode *inode;
- int res;
+ int res = -ENOSPC;
- sb = dir->i_sb;
- inode = hfsplus_new_inode(sb, mode);
+ mutex_lock(&sbi->vh_mutex);
+ inode = hfsplus_new_inode(dir->i_sb, mode);
if (!inode)
- return -ENOSPC;
+ goto out;
+
+ if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode))
+ init_special_inode(inode, mode, rdev);
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
- if (res) {
- inode->i_nlink = 0;
- hfsplus_delete_inode(inode);
- iput(inode);
- return res;
+ 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;
}
- init_special_inode(inode, mode, rdev);
+
hfsplus_instantiate(dentry, inode, inode->i_ino);
mark_inode_dirty(inode);
+ goto out;
- return 0;
+failed_mknod:
+ clear_nlink(inode);
+ hfsplus_delete_inode(inode);
+ iput(inode);
+out:
+ mutex_unlock(&sbi->vh_mutex);
+ return res;
+}
+
+static int hfsplus_create(struct inode *dir, struct dentry *dentry, umode_t mode,
+ bool excl)
+{
+ return hfsplus_mknod(dir, dentry, mode, 0);
+}
+
+static int hfsplus_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
+{
+ return hfsplus_mknod(dir, dentry, mode | S_IFDIR, 0);
}
static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry,
@@ -459,7 +525,10 @@ static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry,
/* Unlink destination if it already exists */
if (new_dentry->d_inode) {
- res = hfsplus_unlink(new_dir, new_dentry);
+ if (S_ISDIR(new_dentry->d_inode->i_mode))
+ res = hfsplus_rmdir(new_dir, new_dentry);
+ else
+ res = hfsplus_unlink(new_dir, new_dentry);
if (res)
return res;
}
@@ -473,21 +542,30 @@ 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 = generic_removexattr,
+#ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
+ .get_acl = hfsplus_get_posix_acl,
+ .set_acl = hfsplus_set_posix_acl,
+#endif
};
const struct file_operations hfsplus_dir_operations = {
+ .fsync = hfsplus_file_fsync,
.read = generic_read_dir,
- .readdir = hfsplus_readdir,
- .ioctl = hfsplus_ioctl,
+ .iterate = hfsplus_readdir,
+ .unlocked_ioctl = hfsplus_ioctl,
.llseek = generic_file_llseek,
.release = hfsplus_dir_release,
};
diff --git a/fs/hfsplus/extents.c b/fs/hfsplus/extents.c
index 12e899cd788..feca524ce2a 100644
--- a/fs/hfsplus/extents.c
+++ b/fs/hfsplus/extents.c
@@ -83,35 +83,69 @@ static u32 hfsplus_ext_lastblock(struct hfsplus_extent *ext)
return be32_to_cpu(ext->start_block) + be32_to_cpu(ext->block_count);
}
-static void __hfsplus_ext_write_extent(struct inode *inode, struct hfs_find_data *fd)
+static int __hfsplus_ext_write_extent(struct inode *inode,
+ struct hfs_find_data *fd)
{
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
int res;
- hfsplus_ext_build_key(fd->search_key, inode->i_ino, HFSPLUS_I(inode).cached_start,
- HFSPLUS_IS_RSRC(inode) ? HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA);
- res = hfs_brec_find(fd);
- if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_NEW) {
+ WARN_ON(!mutex_is_locked(&hip->extents_lock));
+
+ hfsplus_ext_build_key(fd->search_key, inode->i_ino, hip->cached_start,
+ HFSPLUS_IS_RSRC(inode) ?
+ HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA);
+
+ res = hfs_brec_find(fd, hfs_find_rec_by_key);
+ if (hip->extent_state & HFSPLUS_EXT_NEW) {
if (res != -ENOENT)
- return;
- hfs_brec_insert(fd, HFSPLUS_I(inode).cached_extents, sizeof(hfsplus_extent_rec));
- HFSPLUS_I(inode).flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
+ return res;
+ hfs_brec_insert(fd, hip->cached_extents,
+ sizeof(hfsplus_extent_rec));
+ hip->extent_state &= ~(HFSPLUS_EXT_DIRTY | HFSPLUS_EXT_NEW);
} else {
if (res)
- return;
- hfs_bnode_write(fd->bnode, HFSPLUS_I(inode).cached_extents, fd->entryoffset, fd->entrylength);
- HFSPLUS_I(inode).flags &= ~HFSPLUS_FLG_EXT_DIRTY;
+ return res;
+ hfs_bnode_write(fd->bnode, hip->cached_extents,
+ fd->entryoffset, fd->entrylength);
+ hip->extent_state &= ~HFSPLUS_EXT_DIRTY;
}
+
+ /*
+ * We can't just use hfsplus_mark_inode_dirty here, because we
+ * also get called from hfsplus_write_inode, which should not
+ * redirty the inode. Instead the callers have to be careful
+ * to explicily mark the inode dirty, too.
+ */
+ set_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags);
+
+ return 0;
}
-void hfsplus_ext_write_extent(struct inode *inode)
+static int hfsplus_ext_write_extent_locked(struct inode *inode)
{
- if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_DIRTY) {
+ int res = 0;
+
+ if (HFSPLUS_I(inode)->extent_state & HFSPLUS_EXT_DIRTY) {
struct hfs_find_data fd;
- hfs_find_init(HFSPLUS_SB(inode->i_sb).ext_tree, &fd);
- __hfsplus_ext_write_extent(inode, &fd);
+ res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->ext_tree, &fd);
+ if (res)
+ return res;
+ res = __hfsplus_ext_write_extent(inode, &fd);
hfs_find_exit(&fd);
}
+ return res;
+}
+
+int hfsplus_ext_write_extent(struct inode *inode)
+{
+ int res;
+
+ mutex_lock(&HFSPLUS_I(inode)->extents_lock);
+ res = hfsplus_ext_write_extent_locked(inode);
+ mutex_unlock(&HFSPLUS_I(inode)->extents_lock);
+
+ return res;
}
static inline int __hfsplus_ext_read_extent(struct hfs_find_data *fd,
@@ -122,7 +156,7 @@ 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 ||
@@ -130,41 +164,55 @@ static inline int __hfsplus_ext_read_extent(struct hfs_find_data *fd,
return -ENOENT;
if (fd->entrylength != sizeof(hfsplus_extent_rec))
return -EIO;
- hfs_bnode_read(fd->bnode, extent, fd->entryoffset, sizeof(hfsplus_extent_rec));
+ hfs_bnode_read(fd->bnode, extent, fd->entryoffset,
+ sizeof(hfsplus_extent_rec));
return 0;
}
-static inline int __hfsplus_ext_cache_extent(struct hfs_find_data *fd, struct inode *inode, u32 block)
+static inline int __hfsplus_ext_cache_extent(struct hfs_find_data *fd,
+ struct inode *inode, u32 block)
{
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
int res;
- if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_DIRTY)
- __hfsplus_ext_write_extent(inode, fd);
+ WARN_ON(!mutex_is_locked(&hip->extents_lock));
- res = __hfsplus_ext_read_extent(fd, HFSPLUS_I(inode).cached_extents, inode->i_ino,
- block, HFSPLUS_IS_RSRC(inode) ? HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA);
+ if (hip->extent_state & HFSPLUS_EXT_DIRTY) {
+ res = __hfsplus_ext_write_extent(inode, fd);
+ if (res)
+ return res;
+ }
+
+ res = __hfsplus_ext_read_extent(fd, hip->cached_extents, inode->i_ino,
+ block, HFSPLUS_IS_RSRC(inode) ?
+ HFSPLUS_TYPE_RSRC :
+ HFSPLUS_TYPE_DATA);
if (!res) {
- HFSPLUS_I(inode).cached_start = be32_to_cpu(fd->key->ext.start_block);
- HFSPLUS_I(inode).cached_blocks = hfsplus_ext_block_count(HFSPLUS_I(inode).cached_extents);
+ hip->cached_start = be32_to_cpu(fd->key->ext.start_block);
+ hip->cached_blocks =
+ hfsplus_ext_block_count(hip->cached_extents);
} else {
- HFSPLUS_I(inode).cached_start = HFSPLUS_I(inode).cached_blocks = 0;
- HFSPLUS_I(inode).flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
+ hip->cached_start = hip->cached_blocks = 0;
+ hip->extent_state &= ~(HFSPLUS_EXT_DIRTY | HFSPLUS_EXT_NEW);
}
return res;
}
static int hfsplus_ext_read_extent(struct inode *inode, u32 block)
{
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
struct hfs_find_data fd;
int res;
- if (block >= HFSPLUS_I(inode).cached_start &&
- block < HFSPLUS_I(inode).cached_start + HFSPLUS_I(inode).cached_blocks)
+ if (block >= hip->cached_start &&
+ block < hip->cached_start + hip->cached_blocks)
return 0;
- hfs_find_init(HFSPLUS_SB(inode->i_sb).ext_tree, &fd);
- res = __hfsplus_ext_cache_extent(&fd, inode, block);
- hfs_find_exit(&fd);
+ res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->ext_tree, &fd);
+ if (!res) {
+ res = __hfsplus_ext_cache_extent(&fd, inode, block);
+ hfs_find_exit(&fd);
+ }
return res;
}
@@ -172,55 +220,70 @@ static int hfsplus_ext_read_extent(struct inode *inode, u32 block)
int hfsplus_get_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
- struct super_block *sb;
+ struct super_block *sb = inode->i_sb;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
int res = -EIO;
u32 ablock, dblock, mask;
- int shift;
-
- sb = inode->i_sb;
+ sector_t sector;
+ int was_dirty = 0;
/* Convert inode block to disk allocation block */
- shift = HFSPLUS_SB(sb).alloc_blksz_shift - sb->s_blocksize_bits;
- ablock = iblock >> HFSPLUS_SB(sb).fs_shift;
+ ablock = iblock >> sbi->fs_shift;
- if (iblock >= HFSPLUS_I(inode).fs_blocks) {
- if (iblock > HFSPLUS_I(inode).fs_blocks || !create)
+ if (iblock >= hip->fs_blocks) {
+ if (iblock > hip->fs_blocks || !create)
return -EIO;
- if (ablock >= HFSPLUS_I(inode).alloc_blocks) {
- res = hfsplus_file_extend(inode);
+ if (ablock >= hip->alloc_blocks) {
+ res = hfsplus_file_extend(inode, false);
if (res)
return res;
}
} else
create = 0;
- if (ablock < HFSPLUS_I(inode).first_blocks) {
- dblock = hfsplus_ext_find_block(HFSPLUS_I(inode).first_extents, ablock);
+ if (ablock < hip->first_blocks) {
+ dblock = hfsplus_ext_find_block(hip->first_extents, ablock);
goto done;
}
- down(&HFSPLUS_I(inode).extents_lock);
+ if (inode->i_ino == HFSPLUS_EXT_CNID)
+ return -EIO;
+
+ mutex_lock(&hip->extents_lock);
+
+ /*
+ * hfsplus_ext_read_extent will write out a cached extent into
+ * the extents btree. In that case we may have to mark the inode
+ * dirty even for a pure read of an extent here.
+ */
+ was_dirty = (hip->extent_state & HFSPLUS_EXT_DIRTY);
res = hfsplus_ext_read_extent(inode, ablock);
- if (!res) {
- dblock = hfsplus_ext_find_block(HFSPLUS_I(inode).cached_extents, ablock -
- HFSPLUS_I(inode).cached_start);
- } else {
- up(&HFSPLUS_I(inode).extents_lock);
+ if (res) {
+ mutex_unlock(&hip->extents_lock);
return -EIO;
}
- up(&HFSPLUS_I(inode).extents_lock);
+ dblock = hfsplus_ext_find_block(hip->cached_extents,
+ ablock - hip->cached_start);
+ mutex_unlock(&hip->extents_lock);
done:
- dprint(DBG_EXTENT, "get_block(%lu): %llu - %u\n", inode->i_ino, (long long)iblock, dblock);
- mask = (1 << HFSPLUS_SB(sb).fs_shift) - 1;
- map_bh(bh_result, sb, (dblock << HFSPLUS_SB(sb).fs_shift) + HFSPLUS_SB(sb).blockoffset + (iblock & mask));
+ hfs_dbg(EXTENT, "get_block(%lu): %llu - %u\n",
+ inode->i_ino, (long long)iblock, dblock);
+
+ mask = (1 << sbi->fs_shift) - 1;
+ sector = ((sector_t)dblock << sbi->fs_shift) +
+ sbi->blockoffset + (iblock & mask);
+ map_bh(bh_result, sb, sector);
+
if (create) {
set_buffer_new(bh_result);
- HFSPLUS_I(inode).phys_size += sb->s_blocksize;
- HFSPLUS_I(inode).fs_blocks++;
+ hip->phys_size += sb->s_blocksize;
+ hip->fs_blocks++;
inode_add_bytes(inode, sb->s_blocksize);
- mark_inode_dirty(inode);
}
+ if (create || was_dirty)
+ mark_inode_dirty(inode);
return 0;
}
@@ -228,11 +291,12 @@ static void hfsplus_dump_extent(struct hfsplus_extent *extent)
{
int i;
- dprint(DBG_EXTENT, " ");
+ hfs_dbg(EXTENT, " ");
for (i = 0; i < 8; i++)
- dprint(DBG_EXTENT, " %u:%u", be32_to_cpu(extent[i].start_block),
- be32_to_cpu(extent[i].block_count));
- dprint(DBG_EXTENT, "\n");
+ hfs_dbg_cont(EXTENT, " %u:%u",
+ be32_to_cpu(extent[i].start_block),
+ be32_to_cpu(extent[i].block_count));
+ hfs_dbg_cont(EXTENT, "\n");
}
static int hfsplus_add_extent(struct hfsplus_extent *extent, u32 offset,
@@ -269,6 +333,7 @@ static int hfsplus_free_extents(struct super_block *sb,
{
u32 count, start;
int i;
+ int err = 0;
hfsplus_dump_extent(extent);
for (i = 0; i < 8; extent++, i++) {
@@ -285,25 +350,41 @@ found:
for (;;) {
start = be32_to_cpu(extent->start_block);
if (count <= block_nr) {
- hfsplus_block_free(sb, start, count);
+ err = hfsplus_block_free(sb, start, count);
+ if (err) {
+ pr_err("can't free extent\n");
+ hfs_dbg(EXTENT, " start: %u count: %u\n",
+ start, count);
+ }
extent->block_count = 0;
extent->start_block = 0;
block_nr -= count;
} else {
count -= block_nr;
- hfsplus_block_free(sb, start + count, block_nr);
+ err = hfsplus_block_free(sb, start + count, block_nr);
+ if (err) {
+ pr_err("can't free extent\n");
+ hfs_dbg(EXTENT, " start: %u count: %u\n",
+ start, count);
+ }
extent->block_count = cpu_to_be32(count);
block_nr = 0;
}
- if (!block_nr || !i)
- return 0;
+ if (!block_nr || !i) {
+ /*
+ * Try to free all extents and
+ * return only last error
+ */
+ return err;
+ }
i--;
extent--;
count = be32_to_cpu(extent->block_count);
}
}
-int hfsplus_free_fork(struct super_block *sb, u32 cnid, struct hfsplus_fork_raw *fork, int type)
+int hfsplus_free_fork(struct super_block *sb, u32 cnid,
+ struct hfsplus_fork_raw *fork, int type)
{
struct hfs_find_data fd;
hfsplus_extent_rec ext_entry;
@@ -324,7 +405,9 @@ int hfsplus_free_fork(struct super_block *sb, u32 cnid, struct hfsplus_fork_raw
if (total_blocks == blocks)
return 0;
- hfs_find_init(HFSPLUS_SB(sb).ext_tree, &fd);
+ res = hfs_find_init(HFSPLUS_SB(sb)->ext_tree, &fd);
+ if (res)
+ return res;
do {
res = __hfsplus_ext_read_extent(&fd, ext_entry, cnid,
total_blocks, type);
@@ -342,32 +425,36 @@ int hfsplus_free_fork(struct super_block *sb, u32 cnid, struct hfsplus_fork_raw
return res;
}
-int hfsplus_file_extend(struct inode *inode)
+int hfsplus_file_extend(struct inode *inode, bool zeroout)
{
struct super_block *sb = inode->i_sb;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
u32 start, len, goal;
int res;
- if (HFSPLUS_SB(sb).alloc_file->i_size * 8 < HFSPLUS_SB(sb).total_blocks - HFSPLUS_SB(sb).free_blocks + 8) {
- // extend alloc file
- printk(KERN_ERR "hfs: extend alloc file! (%Lu,%u,%u)\n", HFSPLUS_SB(sb).alloc_file->i_size * 8,
- HFSPLUS_SB(sb).total_blocks, HFSPLUS_SB(sb).free_blocks);
+ if (sbi->alloc_file->i_size * 8 <
+ sbi->total_blocks - sbi->free_blocks + 8) {
+ /* extend alloc file */
+ pr_err("extend alloc file! (%llu,%u,%u)\n",
+ sbi->alloc_file->i_size * 8,
+ sbi->total_blocks, sbi->free_blocks);
return -ENOSPC;
}
- down(&HFSPLUS_I(inode).extents_lock);
- if (HFSPLUS_I(inode).alloc_blocks == HFSPLUS_I(inode).first_blocks)
- goal = hfsplus_ext_lastblock(HFSPLUS_I(inode).first_extents);
+ mutex_lock(&hip->extents_lock);
+ if (hip->alloc_blocks == hip->first_blocks)
+ goal = hfsplus_ext_lastblock(hip->first_extents);
else {
- res = hfsplus_ext_read_extent(inode, HFSPLUS_I(inode).alloc_blocks);
+ res = hfsplus_ext_read_extent(inode, hip->alloc_blocks);
if (res)
goto out;
- goal = hfsplus_ext_lastblock(HFSPLUS_I(inode).cached_extents);
+ goal = hfsplus_ext_lastblock(hip->cached_extents);
}
- len = HFSPLUS_I(inode).clump_blocks;
- start = hfsplus_block_allocate(sb, HFSPLUS_SB(sb).total_blocks, goal, &len);
- if (start >= HFSPLUS_SB(sb).total_blocks) {
+ len = hip->clump_blocks;
+ start = hfsplus_block_allocate(sb, sbi->total_blocks, goal, &len);
+ if (start >= sbi->total_blocks) {
start = hfsplus_block_allocate(sb, goal, 0, &len);
if (start >= goal) {
res = -ENOSPC;
@@ -375,57 +462,67 @@ int hfsplus_file_extend(struct inode *inode)
}
}
- dprint(DBG_EXTENT, "extend %lu: %u,%u\n", inode->i_ino, start, len);
- if (HFSPLUS_I(inode).alloc_blocks <= HFSPLUS_I(inode).first_blocks) {
- if (!HFSPLUS_I(inode).first_blocks) {
- dprint(DBG_EXTENT, "first extents\n");
+ if (zeroout) {
+ res = sb_issue_zeroout(sb, start, len, GFP_NOFS);
+ if (res)
+ goto out;
+ }
+
+ hfs_dbg(EXTENT, "extend %lu: %u,%u\n", inode->i_ino, start, len);
+
+ if (hip->alloc_blocks <= hip->first_blocks) {
+ if (!hip->first_blocks) {
+ hfs_dbg(EXTENT, "first extents\n");
/* no extents yet */
- HFSPLUS_I(inode).first_extents[0].start_block = cpu_to_be32(start);
- HFSPLUS_I(inode).first_extents[0].block_count = cpu_to_be32(len);
+ hip->first_extents[0].start_block = cpu_to_be32(start);
+ hip->first_extents[0].block_count = cpu_to_be32(len);
res = 0;
} else {
/* try to append to extents in inode */
- res = hfsplus_add_extent(HFSPLUS_I(inode).first_extents,
- HFSPLUS_I(inode).alloc_blocks,
+ res = hfsplus_add_extent(hip->first_extents,
+ hip->alloc_blocks,
start, len);
if (res == -ENOSPC)
goto insert_extent;
}
if (!res) {
- hfsplus_dump_extent(HFSPLUS_I(inode).first_extents);
- HFSPLUS_I(inode).first_blocks += len;
+ hfsplus_dump_extent(hip->first_extents);
+ hip->first_blocks += len;
}
} else {
- res = hfsplus_add_extent(HFSPLUS_I(inode).cached_extents,
- HFSPLUS_I(inode).alloc_blocks -
- HFSPLUS_I(inode).cached_start,
+ res = hfsplus_add_extent(hip->cached_extents,
+ hip->alloc_blocks - hip->cached_start,
start, len);
if (!res) {
- hfsplus_dump_extent(HFSPLUS_I(inode).cached_extents);
- HFSPLUS_I(inode).flags |= HFSPLUS_FLG_EXT_DIRTY;
- HFSPLUS_I(inode).cached_blocks += len;
+ hfsplus_dump_extent(hip->cached_extents);
+ hip->extent_state |= HFSPLUS_EXT_DIRTY;
+ hip->cached_blocks += len;
} else if (res == -ENOSPC)
goto insert_extent;
}
out:
- up(&HFSPLUS_I(inode).extents_lock);
if (!res) {
- HFSPLUS_I(inode).alloc_blocks += len;
- mark_inode_dirty(inode);
+ hip->alloc_blocks += len;
+ mutex_unlock(&hip->extents_lock);
+ hfsplus_mark_inode_dirty(inode, HFSPLUS_I_ALLOC_DIRTY);
+ return 0;
}
+ mutex_unlock(&hip->extents_lock);
return res;
insert_extent:
- dprint(DBG_EXTENT, "insert new extent\n");
- hfsplus_ext_write_extent(inode);
+ hfs_dbg(EXTENT, "insert new extent\n");
+ res = hfsplus_ext_write_extent_locked(inode);
+ if (res)
+ goto out;
- memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
- HFSPLUS_I(inode).cached_extents[0].start_block = cpu_to_be32(start);
- HFSPLUS_I(inode).cached_extents[0].block_count = cpu_to_be32(len);
- hfsplus_dump_extent(HFSPLUS_I(inode).cached_extents);
- HFSPLUS_I(inode).flags |= HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW;
- HFSPLUS_I(inode).cached_start = HFSPLUS_I(inode).alloc_blocks;
- HFSPLUS_I(inode).cached_blocks = len;
+ memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
+ hip->cached_extents[0].start_block = cpu_to_be32(start);
+ hip->cached_extents[0].block_count = cpu_to_be32(len);
+ hfsplus_dump_extent(hip->cached_extents);
+ hip->extent_state |= HFSPLUS_EXT_DIRTY | HFSPLUS_EXT_NEW;
+ hip->cached_start = hip->alloc_blocks;
+ hip->cached_blocks = len;
res = 0;
goto out;
@@ -434,70 +531,81 @@ insert_extent:
void hfsplus_file_truncate(struct inode *inode)
{
struct super_block *sb = inode->i_sb;
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
struct hfs_find_data fd;
u32 alloc_cnt, blk_cnt, start;
int res;
- dprint(DBG_INODE, "truncate: %lu, %Lu -> %Lu\n", inode->i_ino,
- (long long)HFSPLUS_I(inode).phys_size, inode->i_size);
- if (inode->i_size > HFSPLUS_I(inode).phys_size) {
+ hfs_dbg(INODE, "truncate: %lu, %llu -> %llu\n",
+ inode->i_ino, (long long)hip->phys_size, inode->i_size);
+
+ if (inode->i_size > hip->phys_size) {
struct address_space *mapping = inode->i_mapping;
struct page *page;
void *fsdata;
- u32 size = inode->i_size;
- int res;
+ loff_t size = inode->i_size;
res = pagecache_write_begin(NULL, mapping, size, 0,
AOP_FLAG_UNINTERRUPTIBLE,
&page, &fsdata);
if (res)
return;
- res = pagecache_write_end(NULL, mapping, size, 0, 0, page, fsdata);
+ res = pagecache_write_end(NULL, mapping, size,
+ 0, 0, page, fsdata);
if (res < 0)
return;
mark_inode_dirty(inode);
return;
- } else if (inode->i_size == HFSPLUS_I(inode).phys_size)
+ } else if (inode->i_size == hip->phys_size)
return;
- blk_cnt = (inode->i_size + HFSPLUS_SB(sb).alloc_blksz - 1) >> HFSPLUS_SB(sb).alloc_blksz_shift;
- alloc_cnt = HFSPLUS_I(inode).alloc_blocks;
+ blk_cnt = (inode->i_size + HFSPLUS_SB(sb)->alloc_blksz - 1) >>
+ HFSPLUS_SB(sb)->alloc_blksz_shift;
+
+ mutex_lock(&hip->extents_lock);
+
+ alloc_cnt = hip->alloc_blocks;
if (blk_cnt == alloc_cnt)
- goto out;
+ goto out_unlock;
- down(&HFSPLUS_I(inode).extents_lock);
- hfs_find_init(HFSPLUS_SB(sb).ext_tree, &fd);
+ res = hfs_find_init(HFSPLUS_SB(sb)->ext_tree, &fd);
+ if (res) {
+ mutex_unlock(&hip->extents_lock);
+ /* XXX: We lack error handling of hfsplus_file_truncate() */
+ return;
+ }
while (1) {
- if (alloc_cnt == HFSPLUS_I(inode).first_blocks) {
- hfsplus_free_extents(sb, HFSPLUS_I(inode).first_extents,
+ if (alloc_cnt == hip->first_blocks) {
+ hfsplus_free_extents(sb, hip->first_extents,
alloc_cnt, alloc_cnt - blk_cnt);
- hfsplus_dump_extent(HFSPLUS_I(inode).first_extents);
- HFSPLUS_I(inode).first_blocks = blk_cnt;
+ hfsplus_dump_extent(hip->first_extents);
+ hip->first_blocks = blk_cnt;
break;
}
res = __hfsplus_ext_cache_extent(&fd, inode, alloc_cnt);
if (res)
break;
- start = HFSPLUS_I(inode).cached_start;
- hfsplus_free_extents(sb, HFSPLUS_I(inode).cached_extents,
+ start = hip->cached_start;
+ hfsplus_free_extents(sb, hip->cached_extents,
alloc_cnt - start, alloc_cnt - blk_cnt);
- hfsplus_dump_extent(HFSPLUS_I(inode).cached_extents);
+ hfsplus_dump_extent(hip->cached_extents);
if (blk_cnt > start) {
- HFSPLUS_I(inode).flags |= HFSPLUS_FLG_EXT_DIRTY;
+ hip->extent_state |= HFSPLUS_EXT_DIRTY;
break;
}
alloc_cnt = start;
- HFSPLUS_I(inode).cached_start = HFSPLUS_I(inode).cached_blocks = 0;
- HFSPLUS_I(inode).flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
+ hip->cached_start = hip->cached_blocks = 0;
+ hip->extent_state &= ~(HFSPLUS_EXT_DIRTY | HFSPLUS_EXT_NEW);
hfs_brec_remove(&fd);
}
hfs_find_exit(&fd);
- up(&HFSPLUS_I(inode).extents_lock);
- HFSPLUS_I(inode).alloc_blocks = blk_cnt;
-out:
- HFSPLUS_I(inode).phys_size = inode->i_size;
- HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
- inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits);
- mark_inode_dirty(inode);
+ hip->alloc_blocks = blk_cnt;
+out_unlock:
+ mutex_unlock(&hip->extents_lock);
+ hip->phys_size = inode->i_size;
+ hip->fs_blocks = (inode->i_size + sb->s_blocksize - 1) >>
+ sb->s_blocksize_bits;
+ inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
+ hfsplus_mark_inode_dirty(inode, HFSPLUS_I_ALLOC_DIRTY);
}
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
index d72d0a8b25a..eb5e059f481 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -10,8 +10,16 @@
#ifndef _LINUX_HFSPLUS_FS_H
#define _LINUX_HFSPLUS_FS_H
+#ifdef pr_fmt
+#undef pr_fmt
+#endif
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/fs.h>
+#include <linux/mutex.h>
#include <linux/buffer_head.h>
+#include <linux/blkdev.h>
#include "hfsplus_raw.h"
#define DBG_BNODE_REFS 0x00000001
@@ -21,14 +29,27 @@
#define DBG_SUPER 0x00000010
#define DBG_EXTENT 0x00000020
#define DBG_BITMAP 0x00000040
+#define DBG_ATTR_MOD 0x00000080
+#define DBG_ACL_MOD 0x00000100
-//#define DBG_MASK (DBG_EXTENT|DBG_INODE|DBG_BNODE_MOD)
-//#define DBG_MASK (DBG_BNODE_MOD|DBG_CAT_MOD|DBG_INODE)
-//#define DBG_MASK (DBG_CAT_MOD|DBG_BNODE_REFS|DBG_INODE|DBG_EXTENT)
+#if 0
+#define DBG_MASK (DBG_EXTENT|DBG_INODE|DBG_BNODE_MOD)
+#define DBG_MASK (DBG_BNODE_MOD|DBG_CAT_MOD|DBG_INODE)
+#define DBG_MASK (DBG_CAT_MOD|DBG_BNODE_REFS|DBG_INODE|DBG_EXTENT)
+#endif
#define DBG_MASK (0)
-#define dprint(flg, fmt, args...) \
- if (flg & DBG_MASK) printk(fmt , ## args)
+#define hfs_dbg(flg, fmt, ...) \
+do { \
+ if (DBG_##flg & DBG_MASK) \
+ printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \
+} while (0)
+
+#define hfs_dbg_cont(flg, fmt, ...) \
+do { \
+ if (DBG_##flg & DBG_MASK) \
+ pr_cont(fmt, ##__VA_ARGS__); \
+} while (0)
/* Runtime config options */
#define HFSPLUS_DEF_CR_TYPE 0x3F3F3F3F /* '????' */
@@ -36,10 +57,18 @@
#define HFSPLUS_TYPE_DATA 0x00
#define HFSPLUS_TYPE_RSRC 0xFF
-typedef int (*btree_keycmp)(const hfsplus_btree_key *, const hfsplus_btree_key *);
+typedef int (*btree_keycmp)(const hfsplus_btree_key *,
+ 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;
@@ -60,8 +89,7 @@ struct hfs_btree {
unsigned int max_key_len;
unsigned int depth;
- //unsigned int map1_size, map_size;
- struct semaphore tree_lock;
+ struct mutex tree_lock;
unsigned int pages_per_bnode;
spinlock_t hash_lock;
@@ -99,6 +127,14 @@ struct hfs_bnode {
#define HFS_BNODE_DELETED 4
/*
+ * Attributes file states
+ */
+#define HFSPLUS_EMPTY_ATTR_TREE 0
+#define HFSPLUS_CREATING_ATTR_TREE 1
+#define HFSPLUS_VALID_ATTR_TREE 2
+#define HFSPLUS_FAILED_ATTR_TREE 3
+
+/*
* HFS+ superblock info (built from Volume Header on disk)
*/
@@ -106,85 +142,142 @@ struct hfsplus_vh;
struct hfs_btree;
struct hfsplus_sb_info {
- struct buffer_head *s_vhbh;
+ void *s_vhdr_buf;
struct hfsplus_vh *s_vhdr;
+ void *s_backup_vhdr_buf;
+ struct hfsplus_vh *s_backup_vhdr;
struct hfs_btree *ext_tree;
struct hfs_btree *cat_tree;
struct hfs_btree *attr_tree;
+ atomic_t attr_tree_state;
struct inode *alloc_file;
struct inode *hidden_dir;
struct nls_table *nls;
/* Runtime variables */
u32 blockoffset;
- u32 sect_count;
+ sector_t part_start;
+ sector_t sect_count;
int fs_shift;
- /* Stuff in host order from Vol Header */
+ /* immutable data from the volume header */
u32 alloc_blksz;
int alloc_blksz_shift;
u32 total_blocks;
+ u32 data_clump_blocks, rsrc_clump_blocks;
+
+ /* mutable data from the volume header, protected by alloc_mutex */
u32 free_blocks;
- u32 next_alloc;
+ struct mutex alloc_mutex;
+
+ /* mutable data from the volume header, protected by vh_mutex */
u32 next_cnid;
u32 file_count;
u32 folder_count;
- u32 data_clump_blocks, rsrc_clump_blocks;
+ struct mutex vh_mutex;
/* Config options */
u32 creator;
u32 type;
umode_t umask;
- uid_t uid;
- gid_t gid;
+ kuid_t uid;
+ kgid_t gid;
int part, session;
-
unsigned long flags;
- struct hlist_head rsrc_inodes;
+ int work_queued; /* non-zero delayed work is queued */
+ struct delayed_work sync_work; /* FS sync delayed work */
+ spinlock_t work_lock; /* protects sync_work and work_queued */
};
-#define HFSPLUS_SB_WRITEBACKUP 0x0001
-#define HFSPLUS_SB_NODECOMPOSE 0x0002
-#define HFSPLUS_SB_FORCE 0x0004
-#define HFSPLUS_SB_HFSX 0x0008
-#define HFSPLUS_SB_CASEFOLD 0x0010
+#define HFSPLUS_SB_WRITEBACKUP 0
+#define HFSPLUS_SB_NODECOMPOSE 1
+#define HFSPLUS_SB_FORCE 2
+#define HFSPLUS_SB_HFSX 3
+#define HFSPLUS_SB_CASEFOLD 4
+#define HFSPLUS_SB_NOBARRIER 5
+
+static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb)
+{
+ return sb->s_fs_info;
+}
struct hfsplus_inode_info {
- struct semaphore extents_lock;
- u32 clump_blocks, alloc_blocks;
- sector_t fs_blocks;
- /* Allocation extents from catalog record or volume header */
- hfsplus_extent_rec first_extents;
+ atomic_t opencnt;
+
+ /*
+ * Extent allocation information, protected by extents_lock.
+ */
u32 first_blocks;
+ u32 clump_blocks;
+ u32 alloc_blocks;
+ u32 cached_start;
+ u32 cached_blocks;
+ hfsplus_extent_rec first_extents;
hfsplus_extent_rec cached_extents;
- u32 cached_start, cached_blocks;
- atomic_t opencnt;
+ unsigned int extent_state;
+ struct mutex extents_lock;
+ /*
+ * Immutable data.
+ */
struct inode *rsrc_inode;
- unsigned long flags;
-
__be32 create_date;
- /* Device number in hfsplus_permissions in catalog */
- u32 dev;
- /* BSD system and user file flags */
- u8 rootflags;
- u8 userflags;
+ /*
+ * Protected by sbi->vh_mutex.
+ */
+ u32 linkid;
+
+ /*
+ * Accessed using atomic bitops.
+ */
+ unsigned long flags;
+
+ /*
+ * Protected by i_mutex.
+ */
+ sector_t fs_blocks;
+ u8 userflags; /* BSD user file flags */
+ u32 subfolders; /* Subfolder count (HFSX only) */
struct list_head open_dir_list;
loff_t phys_size;
+
struct inode vfs_inode;
};
-#define HFSPLUS_FLG_RSRC 0x0001
-#define HFSPLUS_FLG_EXT_DIRTY 0x0002
-#define HFSPLUS_FLG_EXT_NEW 0x0004
+#define HFSPLUS_EXT_DIRTY 0x0001
+#define HFSPLUS_EXT_NEW 0x0002
+
+#define HFSPLUS_I_RSRC 0 /* represents a resource fork */
+#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)
-#define HFSPLUS_IS_DATA(inode) (!(HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC))
-#define HFSPLUS_IS_RSRC(inode) (HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC)
+static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode)
+{
+ return list_entry(inode, struct hfsplus_inode_info, vfs_inode);
+}
+
+/*
+ * Mark an inode dirty, and also mark the btree in which the
+ * specific type of metadata is stored.
+ * For data or metadata that gets written back by into the catalog btree
+ * by hfsplus_write_inode a plain mark_inode_dirty call is enough.
+ */
+static inline void hfsplus_mark_inode_dirty(struct inode *inode,
+ unsigned int flag)
+{
+ set_bit(flag, &HFSPLUS_I(inode)->flags);
+ mark_inode_dirty(inode);
+}
struct hfs_find_data {
/* filled by caller */
@@ -205,6 +298,15 @@ struct hfsplus_readdir_data {
struct hfsplus_cat_key key;
};
+/*
+ * Find minimum acceptible I/O size for an hfsplus sb.
+ */
+static inline unsigned short hfsplus_min_io_size(struct super_block *sb)
+{
+ return max_t(unsigned short, bdev_logical_block_size(sb->s_bdev),
+ HFSPLUS_SECTOR_SIZE);
+}
+
#define hfs_btree_open hfsplus_btree_open
#define hfs_btree_close hfsplus_btree_close
#define hfs_btree_write hfsplus_btree_write
@@ -234,7 +336,7 @@ struct hfsplus_readdir_data {
#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
@@ -252,101 +354,153 @@ struct hfsplus_readdir_data {
/*
+ * hfs+-specific ioctl for making the filesystem bootable
+ */
+#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 __init hfsplus_create_attr_tree_cache(void);
+void hfsplus_destroy_attr_tree_cache(void);
+int hfsplus_attr_bin_cmp_key(const hfsplus_btree_key *k1,
+ const hfsplus_btree_key *k2);
+int hfsplus_attr_build_key(struct super_block *sb, hfsplus_btree_key *key,
+ u32 cnid, const char *name);
+hfsplus_attr_entry *hfsplus_alloc_attr_entry(void);
+void hfsplus_destroy_attr_entry(hfsplus_attr_entry *entry);
+int hfsplus_find_attr(struct super_block *sb, u32 cnid, const char *name,
+ struct hfs_find_data *fd);
+int hfsplus_attr_exists(struct inode *inode, const char *name);
+int hfsplus_create_attr(struct inode *inode, const char *name,
+ const void *value, size_t size);
+int hfsplus_delete_attr(struct inode *inode, const char *name);
+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);
+int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset,
+ u32 *max);
+int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count);
/* btree.c */
-struct hfs_btree *hfs_btree_open(struct super_block *, u32);
-void hfs_btree_close(struct hfs_btree *);
-void hfs_btree_write(struct hfs_btree *);
-struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *);
-void hfs_bmap_free(struct hfs_bnode *);
+u32 hfsplus_calc_btree_clump_size(u32 block_size, u32 node_size, u64 sectors,
+ int file_id);
+struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id);
+void hfs_btree_close(struct hfs_btree *tree);
+int hfs_btree_write(struct hfs_btree *tree);
+struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree);
+void hfs_bmap_free(struct hfs_bnode *node);
/* bnode.c */
-void hfs_bnode_read(struct hfs_bnode *, void *, int, int);
-u16 hfs_bnode_read_u16(struct hfs_bnode *, int);
-u8 hfs_bnode_read_u8(struct hfs_bnode *, int);
-void hfs_bnode_read_key(struct hfs_bnode *, void *, int);
-void hfs_bnode_write(struct hfs_bnode *, void *, int, int);
-void hfs_bnode_write_u16(struct hfs_bnode *, int, u16);
-void hfs_bnode_clear(struct hfs_bnode *, int, int);
-void hfs_bnode_copy(struct hfs_bnode *, int,
- struct hfs_bnode *, int, int);
-void hfs_bnode_move(struct hfs_bnode *, int, int, int);
-void hfs_bnode_dump(struct hfs_bnode *);
-void hfs_bnode_unlink(struct hfs_bnode *);
-struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *, u32);
-struct hfs_bnode *hfs_bnode_find(struct hfs_btree *, u32);
-void hfs_bnode_unhash(struct hfs_bnode *);
-void hfs_bnode_free(struct hfs_bnode *);
-struct hfs_bnode *hfs_bnode_create(struct hfs_btree *, u32);
-void hfs_bnode_get(struct hfs_bnode *);
-void hfs_bnode_put(struct hfs_bnode *);
+void hfs_bnode_read(struct hfs_bnode *node, void *buf, int off, int len);
+u16 hfs_bnode_read_u16(struct hfs_bnode *node, int off);
+u8 hfs_bnode_read_u8(struct hfs_bnode *node, int off);
+void hfs_bnode_read_key(struct hfs_bnode *node, void *key, int off);
+void hfs_bnode_write(struct hfs_bnode *node, void *buf, int off, int len);
+void hfs_bnode_write_u16(struct hfs_bnode *node, int off, u16 data);
+void hfs_bnode_clear(struct hfs_bnode *node, int off, int len);
+void hfs_bnode_copy(struct hfs_bnode *dst_node, int dst,
+ struct hfs_bnode *src_node, int src, int len);
+void hfs_bnode_move(struct hfs_bnode *node, int dst, int src, int len);
+void hfs_bnode_dump(struct hfs_bnode *node);
+void hfs_bnode_unlink(struct hfs_bnode *node);
+struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *tree, u32 cnid);
+void hfs_bnode_unhash(struct hfs_bnode *node);
+struct hfs_bnode *hfs_bnode_find(struct hfs_btree *tree, u32 num);
+void hfs_bnode_free(struct hfs_bnode *node);
+struct hfs_bnode *hfs_bnode_create(struct hfs_btree *tree, u32 num);
+void hfs_bnode_get(struct hfs_bnode *node);
+void hfs_bnode_put(struct hfs_bnode *node);
+bool hfs_bnode_need_zeroout(struct hfs_btree *tree);
/* brec.c */
-u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *);
-u16 hfs_brec_keylen(struct hfs_bnode *, u16);
-int hfs_brec_insert(struct hfs_find_data *, void *, int);
-int hfs_brec_remove(struct hfs_find_data *);
+u16 hfs_brec_lenoff(struct hfs_bnode *node, u16 rec, u16 *off);
+u16 hfs_brec_keylen(struct hfs_bnode *node, u16 rec);
+int hfs_brec_insert(struct hfs_find_data *fd, void *entry, int entry_len);
+int hfs_brec_remove(struct hfs_find_data *fd);
/* 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_brec_read(struct hfs_find_data *, void *, int);
-int hfs_brec_goto(struct hfs_find_data *, int);
+int hfs_find_init(struct hfs_btree *tree, struct hfs_find_data *fd);
+void hfs_find_exit(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);
+int hfs_find_rec_by_key(struct hfs_bnode *bnode, struct hfs_find_data *fd,
+ int *begin, int *end, int *cur_rec);
+int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd,
+ search_strategy_t rec_found);
+int hfs_brec_find(struct hfs_find_data *fd, search_strategy_t do_key_compare);
+int hfs_brec_read(struct hfs_find_data *fd, void *rec, int rec_len);
+int hfs_brec_goto(struct hfs_find_data *fd, int cnt);
/* catalog.c */
-int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *);
-int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *);
-void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *, u32, struct qstr *);
-int hfsplus_find_cat(struct super_block *, u32, struct hfs_find_data *);
-int hfsplus_create_cat(u32, struct inode *, struct qstr *, struct inode *);
-int hfsplus_delete_cat(u32, struct inode *, struct qstr *);
-int hfsplus_rename_cat(u32, struct inode *, struct qstr *,
- struct inode *, struct qstr *);
+int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *k1,
+ const hfsplus_btree_key *k2);
+int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *k1,
+ const hfsplus_btree_key *k2);
+void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *key,
+ u32 parent, struct qstr *str);
+void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms);
+int hfsplus_find_cat(struct super_block *sb, u32 cnid,
+ struct hfs_find_data *fd);
+int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str,
+ struct inode *inode);
+int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str);
+int hfsplus_rename_cat(u32 cnid, struct inode *src_dir, struct qstr *src_name,
+ struct inode *dst_dir, struct qstr *dst_name);
+
+/* dir.c */
+extern const struct inode_operations hfsplus_dir_inode_operations;
+extern const struct file_operations hfsplus_dir_operations;
/* extents.c */
-int hfsplus_ext_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *);
-void hfsplus_ext_write_extent(struct inode *);
-int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int);
-int hfsplus_free_fork(struct super_block *, u32, struct hfsplus_fork_raw *, int);
-int hfsplus_file_extend(struct inode *);
-void hfsplus_file_truncate(struct inode *);
+int hfsplus_ext_cmp_key(const hfsplus_btree_key *k1,
+ const hfsplus_btree_key *k2);
+int hfsplus_ext_write_extent(struct inode *inode);
+int hfsplus_get_block(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh_result, int create);
+int hfsplus_free_fork(struct super_block *sb, u32 cnid,
+ struct hfsplus_fork_raw *fork, int type);
+int hfsplus_file_extend(struct inode *inode, bool zeroout);
+void hfsplus_file_truncate(struct inode *inode);
/* inode.c */
extern const struct address_space_operations hfsplus_aops;
extern const struct address_space_operations hfsplus_btree_aops;
-extern struct dentry_operations hfsplus_dentry_operations;
-
-void hfsplus_inode_read_fork(struct inode *, struct hfsplus_fork_raw *);
-void hfsplus_inode_write_fork(struct inode *, struct hfsplus_fork_raw *);
-int hfsplus_cat_read_inode(struct inode *, struct hfs_find_data *);
-int hfsplus_cat_write_inode(struct inode *);
-struct inode *hfsplus_new_inode(struct super_block *, int);
-void hfsplus_delete_inode(struct inode *);
+extern const struct dentry_operations hfsplus_dentry_operations;
+
+struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode);
+void hfsplus_delete_inode(struct inode *inode);
+void hfsplus_inode_read_fork(struct inode *inode,
+ struct hfsplus_fork_raw *fork);
+void hfsplus_inode_write_fork(struct inode *inode,
+ struct hfsplus_fork_raw *fork);
+int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd);
+int hfsplus_cat_write_inode(struct inode *inode);
+int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
+ int datasync);
/* ioctl.c */
-int hfsplus_ioctl(struct inode *inode, 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);
+long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
/* options.c */
-int hfsplus_parse_options(char *, struct hfsplus_sb_info *);
-void hfsplus_fill_defaults(struct hfsplus_sb_info *);
-int hfsplus_show_options(struct seq_file *, struct vfsmount *);
+void hfsplus_fill_defaults(struct hfsplus_sb_info *opts);
+int hfsplus_parse_options_remount(char *input, int *force);
+int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi);
+int hfsplus_show_options(struct seq_file *seq, struct dentry *root);
+
+/* part_tbl.c */
+int hfs_part_find(struct super_block *sb, sector_t *part_start,
+ sector_t *part_size);
/* super.c */
-struct inode *hfsplus_iget(struct super_block *, unsigned long);
+struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino);
+void hfsplus_mark_mdb_dirty(struct super_block *sb);
/* tables.c */
extern u16 hfsplus_case_fold_table[];
@@ -354,56 +508,23 @@ extern u16 hfsplus_decompose_table[];
extern u16 hfsplus_compose_table[];
/* unicode.c */
-int hfsplus_strcasecmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *);
-int hfsplus_strcmp(const struct hfsplus_unistr *, 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);
-int hfsplus_hash_dentry(struct dentry *dentry, struct qstr *str);
-int hfsplus_compare_dentry(struct dentry *dentry, struct qstr *s1, struct qstr *s2);
+int hfsplus_strcasecmp(const struct hfsplus_unistr *s1,
+ const struct hfsplus_unistr *s2);
+int hfsplus_strcmp(const struct hfsplus_unistr *s1,
+ const struct hfsplus_unistr *s2);
+int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr,
+ char *astr, int *len_p);
+int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr,
+ int max_unistr_len, const char *astr, int len);
+int hfsplus_hash_dentry(const struct dentry *dentry, struct qstr *str);
+int hfsplus_compare_dentry(const struct dentry *parent,
+ const struct dentry *dentry, unsigned int len,
+ const char *str, const struct qstr *name);
/* wrapper.c */
-int hfsplus_read_wrapper(struct super_block *);
-
-int hfs_part_find(struct super_block *, sector_t *, sector_t *);
-
-/* access macros */
-/*
-static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb)
-{
- return sb->s_fs_info;
-}
-static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode)
-{
- return list_entry(inode, struct hfsplus_inode_info, vfs_inode);
-}
-*/
-#define HFSPLUS_SB(super) (*(struct hfsplus_sb_info *)(super)->s_fs_info)
-#define HFSPLUS_I(inode) (*list_entry(inode, struct hfsplus_inode_info, vfs_inode))
-
-#if 1
-#define hfsplus_kmap(p) ({ struct page *__p = (p); kmap(__p); })
-#define hfsplus_kunmap(p) ({ struct page *__p = (p); kunmap(__p); __p; })
-#else
-#define hfsplus_kmap(p) kmap(p)
-#define hfsplus_kunmap(p) kunmap(p)
-#endif
-
-#define sb_bread512(sb, sec, data) ({ \
- struct buffer_head *__bh; \
- sector_t __block; \
- loff_t __start; \
- int __offset; \
- \
- __start = (loff_t)(sec) << HFSPLUS_SECTOR_SHIFT;\
- __block = __start >> (sb)->s_blocksize_bits; \
- __offset = __start & ((sb)->s_blocksize - 1); \
- __bh = sb_bread((sb), __block); \
- if (likely(__bh != NULL)) \
- data = (void *)(__bh->b_data + __offset);\
- else \
- data = NULL; \
- __bh; \
-})
+int hfsplus_submit_bio(struct super_block *sb, sector_t sector, void *buf,
+ void **data, int rw);
+int hfsplus_read_wrapper(struct super_block *sb);
/* time macros */
#define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U)
@@ -414,6 +535,4 @@ static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode)
#define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec)
#define hfsp_now2mt() __hfsp_ut2mt(get_seconds())
-#define kdev_t_to_nr(x) (x)
-
#endif
diff --git a/fs/hfsplus/hfsplus_raw.h b/fs/hfsplus/hfsplus_raw.h
index fe99fe8db61..8298d0985f8 100644
--- a/fs/hfsplus/hfsplus_raw.h
+++ b/fs/hfsplus/hfsplus_raw.h
@@ -36,7 +36,8 @@
#define HFSP_WRAPOFF_EMBEDSIG 0x7C
#define HFSP_WRAPOFF_EMBEDEXT 0x7E
-#define HFSP_HIDDENDIR_NAME "\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80HFS+ Private Data"
+#define HFSP_HIDDENDIR_NAME \
+ "\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80HFS+ Private Data"
#define HFSP_HARDLINK_TYPE 0x686c6e6b /* 'hlnk' */
#define HFSP_HFSPLUS_CREATOR 0x6866732b /* 'hfs+' */
@@ -51,13 +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 {
@@ -116,7 +127,7 @@ struct hfsplus_vh {
__be32 write_count;
__be64 encodings_bmp;
- u8 finder_info[32];
+ u32 finder_info[8];
struct hfsplus_fork_raw alloc_file;
struct hfsplus_fork_raw ext_file;
@@ -133,6 +144,7 @@ struct hfsplus_vh {
#define HFSPLUS_VOL_NODEID_REUSED (1 << 12)
#define HFSPLUS_VOL_JOURNALED (1 << 13)
#define HFSPLUS_VOL_SOFTLOCK (1 << 15)
+#define HFSPLUS_VOL_UNUSED_NODE_FIX (1 << 31)
/* HFS+ BTree node descriptor */
struct hfs_bnode_desc {
@@ -145,10 +157,10 @@ struct hfs_bnode_desc {
} __packed;
/* HFS+ BTree node types */
-#define HFS_NODE_INDEX 0x00
-#define HFS_NODE_HEADER 0x01
-#define HFS_NODE_MAP 0x02
-#define HFS_NODE_LEAF 0xFF
+#define HFS_NODE_INDEX 0x00 /* An internal (index) node */
+#define HFS_NODE_HEADER 0x01 /* The tree header node (node 0) */
+#define HFS_NODE_MAP 0x02 /* Holds part of the bitmap of used nodes */
+#define HFS_NODE_LEAF 0xFF /* A leaf (ndNHeight==1) node */
/* HFS+ BTree header */
struct hfs_btree_header_rec {
@@ -176,6 +188,9 @@ struct hfs_btree_header_rec {
/* HFS+ BTree misc info */
#define HFSPLUS_TREE_HEAD 0
#define HFSPLUS_NODE_MXSZ 32768
+#define HFSPLUS_ATTR_TREE_NODE_SIZE 8192
+#define HFSPLUS_BTREE_HDR_NODE_RECS_COUNT 3
+#define HFSPLUS_BTREE_HDR_USER_BYTES 128
/* Some special File ID numbers (stolen from hfs.h) */
#define HFSPLUS_POR_CNID 1 /* Parent Of the Root */
@@ -200,6 +215,7 @@ struct hfsplus_cat_key {
struct hfsplus_unistr name;
} __packed;
+#define HFSPLUS_CAT_KEYLEN (sizeof(struct hfsplus_cat_key))
/* Structs from hfs.h */
struct hfsp_point {
@@ -246,7 +262,7 @@ struct hfsplus_cat_folder {
struct DInfo user_info;
struct DXInfo finder_info;
__be32 text_encoding;
- u32 reserved;
+ __be32 subfolders; /* Subfolder count in HFSX. Reserved in HFS+. */
} __packed;
/* HFS file info (stolen from hfs.h) */
@@ -286,9 +302,13 @@ struct hfsplus_cat_file {
struct hfsplus_fork_raw rsrc_fork;
} __packed;
-/* File attribute bits */
+/* File and folder flag bits */
#define HFSPLUS_FILE_LOCKED 0x0001
#define HFSPLUS_FILE_THREAD_EXISTS 0x0002
+#define HFSPLUS_XATTR_EXISTS 0x0004
+#define HFSPLUS_ACL_EXISTS 0x0008
+#define HFSPLUS_HAS_FOLDER_COUNT 0x0010 /* Folder has subfolder count
+ * (HFSX only) */
/* HFS+ catalog thread (part of a cat_entry) */
struct hfsplus_cat_thread {
@@ -323,13 +343,65 @@ struct hfsplus_ext_key {
__be32 start_block;
} __packed;
-#define HFSPLUS_EXT_KEYLEN 12
+#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 37744cf3706..0cf786f2d04 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -8,14 +8,18 @@
* Inode handling routines
*/
+#include <linux/blkdev.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/pagemap.h>
#include <linux/mpage.h>
#include <linux/sched.h>
+#include <linux/aio.h>
#include "hfsplus_fs.h"
#include "hfsplus_raw.h"
+#include "xattr.h"
+#include "acl.h"
static int hfsplus_readpage(struct file *file, struct page *page)
{
@@ -27,14 +31,30 @@ static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
return block_write_full_page(page, hfsplus_get_block, wbc);
}
+static void hfsplus_write_failed(struct address_space *mapping, loff_t to)
+{
+ struct inode *inode = mapping->host;
+
+ if (to > inode->i_size) {
+ truncate_pagecache(inode, inode->i_size);
+ hfsplus_file_truncate(inode);
+ }
+}
+
static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
{
+ int ret;
+
*pagep = NULL;
- return cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+ ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
hfsplus_get_block,
- &HFSPLUS_I(mapping->host).phys_size);
+ &HFSPLUS_I(mapping->host)->phys_size);
+ if (unlikely(ret))
+ hfsplus_write_failed(mapping, pos + len);
+
+ return ret;
}
static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
@@ -53,20 +73,23 @@ static int hfsplus_releasepage(struct page *page, gfp_t mask)
switch (inode->i_ino) {
case HFSPLUS_EXT_CNID:
- tree = HFSPLUS_SB(sb).ext_tree;
+ tree = HFSPLUS_SB(sb)->ext_tree;
break;
case HFSPLUS_CAT_CNID:
- tree = HFSPLUS_SB(sb).cat_tree;
+ tree = HFSPLUS_SB(sb)->cat_tree;
break;
case HFSPLUS_ATTR_CNID:
- tree = HFSPLUS_SB(sb).attr_tree;
+ tree = HFSPLUS_SB(sb)->attr_tree;
break;
default:
BUG();
return 0;
}
+ if (!tree)
+ return 0;
if (tree->node_size >= PAGE_CACHE_SIZE) {
- nidx = page->index >> (tree->node_size_shift - PAGE_CACHE_SHIFT);
+ nidx = page->index >>
+ (tree->node_size_shift - PAGE_CACHE_SHIFT);
spin_lock(&tree->hash_lock);
node = hfs_bnode_findhash(tree, nidx);
if (!node)
@@ -79,7 +102,8 @@ static int hfsplus_releasepage(struct page *page, gfp_t mask)
}
spin_unlock(&tree->hash_lock);
} else {
- nidx = page->index << (PAGE_CACHE_SHIFT - tree->node_size_shift);
+ nidx = page->index <<
+ (PAGE_CACHE_SHIFT - tree->node_size_shift);
i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift);
spin_lock(&tree->hash_lock);
do {
@@ -99,13 +123,30 @@ static int hfsplus_releasepage(struct page *page, gfp_t mask)
}
static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
- const struct iovec *iov, loff_t offset, unsigned long nr_segs)
+ struct iov_iter *iter, loff_t offset)
{
struct file *file = iocb->ki_filp;
- struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
+ struct address_space *mapping = file->f_mapping;
+ struct inode *inode = file_inode(file)->i_mapping->host;
+ size_t count = iov_iter_count(iter);
+ ssize_t ret;
+
+ ret = blockdev_direct_IO(rw, iocb, inode, iter, offset,
+ hfsplus_get_block);
- return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
- offset, nr_segs, hfsplus_get_block, NULL);
+ /*
+ * In case of error extending write may have instantiated a few
+ * blocks outside i_size. Trim these off again.
+ */
+ if (unlikely((rw & WRITE) && ret < 0)) {
+ loff_t isize = i_size_read(inode);
+ loff_t end = offset + count;
+
+ if (end > isize)
+ hfsplus_write_failed(mapping, end);
+ }
+
+ return ret;
}
static int hfsplus_writepages(struct address_space *mapping,
@@ -117,7 +158,6 @@ static int hfsplus_writepages(struct address_space *mapping,
const struct address_space_operations hfsplus_btree_aops = {
.readpage = hfsplus_readpage,
.writepage = hfsplus_writepage,
- .sync_page = block_sync_page,
.write_begin = hfsplus_write_begin,
.write_end = generic_write_end,
.bmap = hfsplus_bmap,
@@ -127,7 +167,6 @@ const struct address_space_operations hfsplus_btree_aops = {
const struct address_space_operations hfsplus_aops = {
.readpage = hfsplus_readpage,
.writepage = hfsplus_writepage,
- .sync_page = block_sync_page,
.write_begin = hfsplus_write_begin,
.write_end = generic_write_end,
.bmap = hfsplus_bmap,
@@ -135,80 +174,35 @@ const struct address_space_operations hfsplus_aops = {
.writepages = hfsplus_writepages,
};
-struct dentry_operations hfsplus_dentry_operations = {
+const struct dentry_operations hfsplus_dentry_operations = {
.d_hash = hfsplus_hash_dentry,
.d_compare = hfsplus_compare_dentry,
};
-static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
-{
- struct hfs_find_data fd;
- struct super_block *sb = dir->i_sb;
- struct inode *inode = NULL;
- int err;
-
- if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
- goto out;
-
- inode = HFSPLUS_I(dir).rsrc_inode;
- if (inode)
- goto out;
-
- inode = new_inode(sb);
- if (!inode)
- return ERR_PTR(-ENOMEM);
-
- inode->i_ino = dir->i_ino;
- INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
- init_MUTEX(&HFSPLUS_I(inode).extents_lock);
- HFSPLUS_I(inode).flags = HFSPLUS_FLG_RSRC;
-
- hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
- err = hfsplus_find_cat(sb, dir->i_ino, &fd);
- if (!err)
- err = hfsplus_cat_read_inode(inode, &fd);
- hfs_find_exit(&fd);
- if (err) {
- iput(inode);
- return ERR_PTR(err);
- }
- HFSPLUS_I(inode).rsrc_inode = dir;
- HFSPLUS_I(dir).rsrc_inode = inode;
- igrab(dir);
- hlist_add_head(&inode->i_hash, &HFSPLUS_SB(sb).rsrc_inodes);
- mark_inode_dirty(inode);
-out:
- d_add(dentry, inode);
- return NULL;
-}
-
-static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir)
+static void hfsplus_get_perms(struct inode *inode,
+ struct hfsplus_perm *perms, int dir)
{
- struct super_block *sb = inode->i_sb;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
u16 mode;
mode = be16_to_cpu(perms->mode);
- inode->i_uid = be32_to_cpu(perms->owner);
- if (!inode->i_uid && !mode)
- inode->i_uid = HFSPLUS_SB(sb).uid;
+ i_uid_write(inode, be32_to_cpu(perms->owner));
+ if (!i_uid_read(inode) && !mode)
+ inode->i_uid = sbi->uid;
- inode->i_gid = be32_to_cpu(perms->group);
- if (!inode->i_gid && !mode)
- inode->i_gid = HFSPLUS_SB(sb).gid;
+ i_gid_write(inode, be32_to_cpu(perms->group));
+ if (!i_gid_read(inode) && !mode)
+ inode->i_gid = sbi->gid;
if (dir) {
- mode = mode ? (mode & S_IALLUGO) :
- (S_IRWXUGO & ~(HFSPLUS_SB(sb).umask));
+ mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
mode |= S_IFDIR;
} else if (!mode)
- mode = S_IFREG | ((S_IRUGO|S_IWUGO) &
- ~(HFSPLUS_SB(sb).umask));
+ mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
inode->i_mode = mode;
- HFSPLUS_I(inode).rootflags = perms->rootflags;
- HFSPLUS_I(inode).userflags = perms->userflags;
+ HFSPLUS_I(inode)->userflags = perms->userflags;
if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
inode->i_flags |= S_IMMUTABLE;
else
@@ -219,42 +213,13 @@ static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, i
inode->i_flags &= ~S_APPEND;
}
-static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms)
-{
- if (inode->i_flags & S_IMMUTABLE)
- perms->rootflags |= HFSPLUS_FLG_IMMUTABLE;
- else
- perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
- if (inode->i_flags & S_APPEND)
- perms->rootflags |= HFSPLUS_FLG_APPEND;
- else
- perms->rootflags &= ~HFSPLUS_FLG_APPEND;
- perms->userflags = HFSPLUS_I(inode).userflags;
- perms->mode = cpu_to_be16(inode->i_mode);
- perms->owner = cpu_to_be32(inode->i_uid);
- perms->group = cpu_to_be32(inode->i_gid);
- perms->dev = cpu_to_be32(HFSPLUS_I(inode).dev);
-}
-
-static int hfsplus_permission(struct inode *inode, int mask, struct nameidata *nd)
-{
- /* MAY_EXEC is also used for lookup, if no x bit is set allow lookup,
- * open_exec has the same test, so it's still not executable, if a x bit
- * is set fall back to standard permission check.
- */
- if (S_ISREG(inode->i_mode) && mask & MAY_EXEC && !(inode->i_mode & 0111))
- return 0;
- return generic_permission(inode, mask, NULL);
-}
-
-
static int hfsplus_file_open(struct inode *inode, struct file *file)
{
if (HFSPLUS_IS_RSRC(inode))
- inode = HFSPLUS_I(inode).rsrc_inode;
- if (atomic_read(&file->f_count) != 1)
- return 0;
- atomic_inc(&HFSPLUS_I(inode).opencnt);
+ inode = HFSPLUS_I(inode)->rsrc_inode;
+ if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
+ return -EOVERFLOW;
+ atomic_inc(&HFSPLUS_I(inode)->opencnt);
return 0;
}
@@ -263,14 +228,13 @@ static int hfsplus_file_release(struct inode *inode, struct file *file)
struct super_block *sb = inode->i_sb;
if (HFSPLUS_IS_RSRC(inode))
- inode = HFSPLUS_I(inode).rsrc_inode;
- if (atomic_read(&file->f_count) != 0)
- return 0;
- if (atomic_dec_and_test(&HFSPLUS_I(inode).opencnt)) {
+ inode = HFSPLUS_I(inode)->rsrc_inode;
+ if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
mutex_lock(&inode->i_mutex);
hfsplus_file_truncate(inode);
if (inode->i_flags & S_DEAD) {
- hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL);
+ hfsplus_delete_cat(inode->i_ino,
+ HFSPLUS_SB(sb)->hidden_dir, NULL);
hfsplus_delete_inode(inode);
}
mutex_unlock(&inode->i_mutex);
@@ -278,78 +242,171 @@ static int hfsplus_file_release(struct inode *inode, struct file *file)
return 0;
}
-extern const struct inode_operations hfsplus_dir_inode_operations;
-extern struct file_operations hfsplus_dir_operations;
+static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
+{
+ struct inode *inode = dentry->d_inode;
+ int error;
+
+ error = inode_change_ok(inode, attr);
+ if (error)
+ return error;
+
+ if ((attr->ia_valid & ATTR_SIZE) &&
+ attr->ia_size != i_size_read(inode)) {
+ inode_dio_wait(inode);
+ truncate_setsize(inode, attr->ia_size);
+ hfsplus_file_truncate(inode);
+ }
+
+ setattr_copy(inode, attr);
+ mark_inode_dirty(inode);
+
+ if (attr->ia_valid & ATTR_MODE) {
+ error = posix_acl_chmod(inode, inode->i_mode);
+ if (unlikely(error))
+ return error;
+ }
+
+ return 0;
+}
+
+int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
+ int datasync)
+{
+ struct inode *inode = file->f_mapping->host;
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
+ int error = 0, error2;
+
+ error = filemap_write_and_wait_range(inode->i_mapping, start, end);
+ if (error)
+ return error;
+ mutex_lock(&inode->i_mutex);
+
+ /*
+ * Sync inode metadata into the catalog and extent trees.
+ */
+ sync_inode_metadata(inode, 1);
+
+ /*
+ * And explicitly write out the btrees.
+ */
+ if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags))
+ error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
+
+ if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) {
+ error2 =
+ filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
+ if (!error)
+ 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 {
+ pr_err("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)
+ error = error2;
+ }
+
+ if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
+ blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
+
+ mutex_unlock(&inode->i_mutex);
+
+ return error;
+}
static const struct inode_operations hfsplus_file_inode_operations = {
- .lookup = hfsplus_file_lookup,
- .truncate = hfsplus_file_truncate,
- .permission = hfsplus_permission,
- .setxattr = hfsplus_setxattr,
- .getxattr = hfsplus_getxattr,
+ .setattr = hfsplus_setattr,
+ .setxattr = generic_setxattr,
+ .getxattr = generic_getxattr,
.listxattr = hfsplus_listxattr,
+ .removexattr = generic_removexattr,
+#ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
+ .get_acl = hfsplus_get_posix_acl,
+ .set_acl = hfsplus_set_posix_acl,
+#endif
};
static const struct file_operations hfsplus_file_operations = {
- .llseek = generic_file_llseek,
- .read = do_sync_read,
- .aio_read = generic_file_aio_read,
- .write = do_sync_write,
- .aio_write = generic_file_aio_write,
+ .llseek = generic_file_llseek,
+ .read = new_sync_read,
+ .read_iter = generic_file_read_iter,
+ .write = new_sync_write,
+ .write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,
.splice_read = generic_file_splice_read,
- .fsync = file_fsync,
+ .fsync = hfsplus_file_fsync,
.open = hfsplus_file_open,
.release = hfsplus_file_release,
- .ioctl = hfsplus_ioctl,
+ .unlocked_ioctl = hfsplus_ioctl,
};
-struct inode *hfsplus_new_inode(struct super_block *sb, int mode)
+struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode)
{
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct inode *inode = new_inode(sb);
+ struct hfsplus_inode_info *hip;
+
if (!inode)
return NULL;
- inode->i_ino = HFSPLUS_SB(sb).next_cnid++;
+ inode->i_ino = sbi->next_cnid++;
inode->i_mode = mode;
- inode->i_uid = current->fsuid;
- inode->i_gid = current->fsgid;
- inode->i_nlink = 1;
+ inode->i_uid = current_fsuid();
+ inode->i_gid = current_fsgid();
+ set_nlink(inode, 1);
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
- INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
- init_MUTEX(&HFSPLUS_I(inode).extents_lock);
- atomic_set(&HFSPLUS_I(inode).opencnt, 0);
- HFSPLUS_I(inode).flags = 0;
- memset(HFSPLUS_I(inode).first_extents, 0, sizeof(hfsplus_extent_rec));
- memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
- HFSPLUS_I(inode).alloc_blocks = 0;
- HFSPLUS_I(inode).first_blocks = 0;
- HFSPLUS_I(inode).cached_start = 0;
- HFSPLUS_I(inode).cached_blocks = 0;
- HFSPLUS_I(inode).phys_size = 0;
- HFSPLUS_I(inode).fs_blocks = 0;
- HFSPLUS_I(inode).rsrc_inode = NULL;
+
+ hip = HFSPLUS_I(inode);
+ INIT_LIST_HEAD(&hip->open_dir_list);
+ mutex_init(&hip->extents_lock);
+ atomic_set(&hip->opencnt, 0);
+ hip->extent_state = 0;
+ hip->flags = 0;
+ hip->userflags = 0;
+ hip->subfolders = 0;
+ memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
+ memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
+ hip->alloc_blocks = 0;
+ hip->first_blocks = 0;
+ hip->cached_start = 0;
+ hip->cached_blocks = 0;
+ hip->phys_size = 0;
+ hip->fs_blocks = 0;
+ hip->rsrc_inode = NULL;
if (S_ISDIR(inode->i_mode)) {
inode->i_size = 2;
- HFSPLUS_SB(sb).folder_count++;
+ sbi->folder_count++;
inode->i_op = &hfsplus_dir_inode_operations;
inode->i_fop = &hfsplus_dir_operations;
} else if (S_ISREG(inode->i_mode)) {
- HFSPLUS_SB(sb).file_count++;
+ sbi->file_count++;
inode->i_op = &hfsplus_file_inode_operations;
inode->i_fop = &hfsplus_file_operations;
inode->i_mapping->a_ops = &hfsplus_aops;
- HFSPLUS_I(inode).clump_blocks = HFSPLUS_SB(sb).data_clump_blocks;
+ hip->clump_blocks = sbi->data_clump_blocks;
} else if (S_ISLNK(inode->i_mode)) {
- HFSPLUS_SB(sb).file_count++;
+ sbi->file_count++;
inode->i_op = &page_symlink_inode_operations;
inode->i_mapping->a_ops = &hfsplus_aops;
- HFSPLUS_I(inode).clump_blocks = 1;
+ hip->clump_blocks = 1;
} else
- HFSPLUS_SB(sb).file_count++;
+ sbi->file_count++;
insert_inode_hash(inode);
mark_inode_dirty(inode);
- sb->s_dirt = 1;
+ hfsplus_mark_mdb_dirty(sb);
return inode;
}
@@ -359,11 +416,11 @@ void hfsplus_delete_inode(struct inode *inode)
struct super_block *sb = inode->i_sb;
if (S_ISDIR(inode->i_mode)) {
- HFSPLUS_SB(sb).folder_count--;
- sb->s_dirt = 1;
+ HFSPLUS_SB(sb)->folder_count--;
+ hfsplus_mark_mdb_dirty(sb);
return;
}
- HFSPLUS_SB(sb).file_count--;
+ HFSPLUS_SB(sb)->file_count--;
if (S_ISREG(inode->i_mode)) {
if (!inode->i_nlink) {
inode->i_size = 0;
@@ -373,40 +430,46 @@ void hfsplus_delete_inode(struct inode *inode)
inode->i_size = 0;
hfsplus_file_truncate(inode);
}
- sb->s_dirt = 1;
+ hfsplus_mark_mdb_dirty(sb);
}
void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
{
struct super_block *sb = inode->i_sb;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
u32 count;
int i;
- memcpy(&HFSPLUS_I(inode).first_extents, &fork->extents,
- sizeof(hfsplus_extent_rec));
+ memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
for (count = 0, i = 0; i < 8; i++)
count += be32_to_cpu(fork->extents[i].block_count);
- HFSPLUS_I(inode).first_blocks = count;
- memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
- HFSPLUS_I(inode).cached_start = 0;
- HFSPLUS_I(inode).cached_blocks = 0;
-
- HFSPLUS_I(inode).alloc_blocks = be32_to_cpu(fork->total_blocks);
- inode->i_size = HFSPLUS_I(inode).phys_size = be64_to_cpu(fork->total_size);
- HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
- inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits);
- HFSPLUS_I(inode).clump_blocks = be32_to_cpu(fork->clump_size) >> HFSPLUS_SB(sb).alloc_blksz_shift;
- if (!HFSPLUS_I(inode).clump_blocks)
- HFSPLUS_I(inode).clump_blocks = HFSPLUS_IS_RSRC(inode) ? HFSPLUS_SB(sb).rsrc_clump_blocks :
- HFSPLUS_SB(sb).data_clump_blocks;
+ hip->first_blocks = count;
+ memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
+ hip->cached_start = 0;
+ hip->cached_blocks = 0;
+
+ hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
+ hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
+ hip->fs_blocks =
+ (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
+ inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
+ hip->clump_blocks =
+ be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
+ if (!hip->clump_blocks) {
+ hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
+ sbi->rsrc_clump_blocks :
+ sbi->data_clump_blocks;
+ }
}
-void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
+void hfsplus_inode_write_fork(struct inode *inode,
+ struct hfsplus_fork_raw *fork)
{
- memcpy(&fork->extents, &HFSPLUS_I(inode).first_extents,
+ memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
sizeof(hfsplus_extent_rec));
fork->total_size = cpu_to_be64(inode->i_size);
- fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode).alloc_blocks);
+ fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
}
int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
@@ -417,7 +480,7 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
- HFSPLUS_I(inode).dev = 0;
+ HFSPLUS_I(inode)->linkid = 0;
if (type == HFSPLUS_FOLDER) {
struct hfsplus_cat_folder *folder = &entry.folder;
@@ -426,13 +489,17 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
sizeof(struct hfsplus_cat_folder));
hfsplus_get_perms(inode, &folder->permissions, 1);
- inode->i_nlink = 1;
+ set_nlink(inode, 1);
inode->i_size = 2 + be32_to_cpu(folder->valence);
inode->i_atime = hfsp_mt2ut(folder->access_date);
inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
- HFSPLUS_I(inode).create_date = folder->create_date;
- HFSPLUS_I(inode).fs_blocks = 0;
+ HFSPLUS_I(inode)->create_date = folder->create_date;
+ HFSPLUS_I(inode)->fs_blocks = 0;
+ if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
+ HFSPLUS_I(inode)->subfolders =
+ be32_to_cpu(folder->subfolders);
+ }
inode->i_op = &hfsplus_dir_inode_operations;
inode->i_fop = &hfsplus_dir_operations;
} else if (type == HFSPLUS_FILE) {
@@ -443,13 +510,14 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
sizeof(struct hfsplus_cat_file));
- hfsplus_inode_read_fork(inode, HFSPLUS_IS_DATA(inode) ?
- &file->data_fork : &file->rsrc_fork);
+ hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ?
+ &file->rsrc_fork : &file->data_fork);
hfsplus_get_perms(inode, &file->permissions, 0);
- inode->i_nlink = 1;
+ set_nlink(inode, 1);
if (S_ISREG(inode->i_mode)) {
if (file->permissions.dev)
- inode->i_nlink = be32_to_cpu(file->permissions.dev);
+ set_nlink(inode,
+ be32_to_cpu(file->permissions.dev));
inode->i_op = &hfsplus_file_inode_operations;
inode->i_fop = &hfsplus_file_operations;
inode->i_mapping->a_ops = &hfsplus_aops;
@@ -463,9 +531,9 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
inode->i_atime = hfsp_mt2ut(file->access_date);
inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
- HFSPLUS_I(inode).create_date = file->create_date;
+ HFSPLUS_I(inode)->create_date = file->create_date;
} else {
- printk(KERN_ERR "hfs: bad catalog entry used to create inode\n");
+ pr_err("bad catalog entry used to create inode\n");
res = -EIO;
}
return res;
@@ -478,12 +546,12 @@ int hfsplus_cat_write_inode(struct inode *inode)
hfsplus_cat_entry entry;
if (HFSPLUS_IS_RSRC(inode))
- main_inode = HFSPLUS_I(inode).rsrc_inode;
+ main_inode = HFSPLUS_I(inode)->rsrc_inode;
if (!main_inode->i_nlink)
return 0;
- if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb).cat_tree, &fd))
+ if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
/* panic? */
return -EIO;
@@ -499,11 +567,15 @@ int hfsplus_cat_write_inode(struct inode *inode)
hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
sizeof(struct hfsplus_cat_folder));
/* simple node checks? */
- hfsplus_set_perms(inode, &folder->permissions);
+ hfsplus_cat_set_perms(inode, &folder->permissions);
folder->access_date = hfsp_ut2mt(inode->i_atime);
folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
folder->valence = cpu_to_be32(inode->i_size - 2);
+ if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
+ folder->subfolders =
+ cpu_to_be32(HFSPLUS_I(inode)->subfolders);
+ }
hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
sizeof(struct hfsplus_cat_folder));
} else if (HFSPLUS_IS_RSRC(inode)) {
@@ -521,12 +593,10 @@ int hfsplus_cat_write_inode(struct inode *inode)
hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
sizeof(struct hfsplus_cat_file));
hfsplus_inode_write_fork(inode, &file->data_fork);
- if (S_ISREG(inode->i_mode))
- HFSPLUS_I(inode).dev = inode->i_nlink;
- if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
- HFSPLUS_I(inode).dev = kdev_t_to_nr(inode->i_rdev);
- hfsplus_set_perms(inode, &file->permissions);
- if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
+ hfsplus_cat_set_perms(inode, &file->permissions);
+ if (HFSPLUS_FLG_IMMUTABLE &
+ (file->permissions.rootflags |
+ file->permissions.userflags))
file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
else
file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
@@ -536,6 +606,8 @@ int hfsplus_cat_write_inode(struct inode *inode)
hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
sizeof(struct hfsplus_cat_file));
}
+
+ set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags);
out:
hfs_find_exit(&fd);
return 0;
diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c
index b60c0affbec..d3ff5cc317d 100644
--- a/fs/hfsplus/ioctl.c
+++ b/fs/hfsplus/ioctl.c
@@ -14,175 +14,139 @@
#include <linux/capability.h>
#include <linux/fs.h>
+#include <linux/mount.h>
#include <linux/sched.h>
-#include <linux/xattr.h>
#include <asm/uaccess.h>
#include "hfsplus_fs.h"
-int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
+/*
+ * "Blessing" an HFS+ filesystem writes metadata to the superblock informing
+ * the platform firmware which file to boot from
+ */
+static int hfsplus_ioctl_bless(struct file *file, int __user *user_flags)
{
- unsigned int flags;
+ struct dentry *dentry = file->f_path.dentry;
+ struct inode *inode = dentry->d_inode;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
+ struct hfsplus_vh *vh = sbi->s_vhdr;
+ struct hfsplus_vh *bvh = sbi->s_backup_vhdr;
+ u32 cnid = (unsigned long)dentry->d_fsdata;
- switch (cmd) {
- case HFSPLUS_IOC_EXT2_GETFLAGS:
- flags = 0;
- if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_IMMUTABLE)
- flags |= FS_IMMUTABLE_FL; /* EXT2_IMMUTABLE_FL */
- if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_APPEND)
- flags |= FS_APPEND_FL; /* EXT2_APPEND_FL */
- if (HFSPLUS_I(inode).userflags & HFSPLUS_FLG_NODUMP)
- flags |= FS_NODUMP_FL; /* EXT2_NODUMP_FL */
- return put_user(flags, (int __user *)arg);
- case HFSPLUS_IOC_EXT2_SETFLAGS: {
- if (IS_RDONLY(inode))
- return -EROFS;
-
- if (!is_owner_or_cap(inode))
- return -EACCES;
-
- if (get_user(flags, (int __user *)arg))
- return -EFAULT;
-
- if (flags & (FS_IMMUTABLE_FL|FS_APPEND_FL) ||
- HFSPLUS_I(inode).rootflags & (HFSPLUS_FLG_IMMUTABLE|HFSPLUS_FLG_APPEND)) {
- if (!capable(CAP_LINUX_IMMUTABLE))
- return -EPERM;
- }
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
- /* don't silently ignore unsupported ext2 flags */
- if (flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL))
- return -EOPNOTSUPP;
+ mutex_lock(&sbi->vh_mutex);
- if (flags & FS_IMMUTABLE_FL) { /* EXT2_IMMUTABLE_FL */
- inode->i_flags |= S_IMMUTABLE;
- HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_IMMUTABLE;
- } else {
- inode->i_flags &= ~S_IMMUTABLE;
- HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
- }
- if (flags & FS_APPEND_FL) { /* EXT2_APPEND_FL */
- inode->i_flags |= S_APPEND;
- HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_APPEND;
- } else {
- inode->i_flags &= ~S_APPEND;
- HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_APPEND;
- }
- if (flags & FS_NODUMP_FL) /* EXT2_NODUMP_FL */
- HFSPLUS_I(inode).userflags |= HFSPLUS_FLG_NODUMP;
- else
- HFSPLUS_I(inode).userflags &= ~HFSPLUS_FLG_NODUMP;
-
- inode->i_ctime = CURRENT_TIME_SEC;
- mark_inode_dirty(inode);
- return 0;
- }
- default:
- return -ENOTTY;
- }
+ /* Directory containing the bootable system */
+ vh->finder_info[0] = bvh->finder_info[0] =
+ cpu_to_be32(parent_ino(dentry));
+
+ /*
+ * Bootloader. Just using the inode here breaks in the case of
+ * hard links - the firmware wants the ID of the hard link file,
+ * but the inode points at the indirect inode
+ */
+ vh->finder_info[1] = bvh->finder_info[1] = cpu_to_be32(cnid);
+
+ /* Per spec, the OS X system folder - same as finder_info[0] here */
+ vh->finder_info[5] = bvh->finder_info[5] =
+ cpu_to_be32(parent_ino(dentry));
+
+ mutex_unlock(&sbi->vh_mutex);
+ return 0;
}
-int hfsplus_setxattr(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags)
+static int hfsplus_ioctl_getflags(struct file *file, int __user *user_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));
-out:
- hfs_find_exit(&fd);
- return res;
+ struct inode *inode = file_inode(file);
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
+ unsigned int flags = 0;
+
+ if (inode->i_flags & S_IMMUTABLE)
+ flags |= FS_IMMUTABLE_FL;
+ if (inode->i_flags & S_APPEND)
+ flags |= FS_APPEND_FL;
+ if (hip->userflags & HFSPLUS_FLG_NODUMP)
+ flags |= FS_NODUMP_FL;
+
+ return put_user(flags, user_flags);
}
-ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
- void *value, size_t size)
+static int hfsplus_ioctl_setflags(struct file *file, int __user *user_flags)
{
- 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));
+ struct inode *inode = file_inode(file);
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
+ unsigned int flags;
+ int err = 0;
+
+ err = mnt_want_write_file(file);
+ if (err)
+ goto out;
+
+ if (!inode_owner_or_capable(inode)) {
+ err = -EACCES;
+ goto out_drop_write;
}
- 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 = -ENODATA;
-out:
- if (size)
- hfs_find_exit(&fd);
- return res;
-}
-#define HFSPLUS_ATTRLIST_SIZE (sizeof("hfs.creator")+sizeof("hfs.type"))
+ if (get_user(flags, user_flags)) {
+ err = -EFAULT;
+ goto out_drop_write;
+ }
-ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size)
-{
- struct inode *inode = dentry->d_inode;
+ mutex_lock(&inode->i_mutex);
+
+ if ((flags & (FS_IMMUTABLE_FL|FS_APPEND_FL)) ||
+ inode->i_flags & (S_IMMUTABLE|S_APPEND)) {
+ if (!capable(CAP_LINUX_IMMUTABLE)) {
+ err = -EPERM;
+ goto out_unlock_inode;
+ }
+ }
+
+ /* don't silently ignore unsupported ext2 flags */
+ if (flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) {
+ err = -EOPNOTSUPP;
+ goto out_unlock_inode;
+ }
+
+ if (flags & FS_IMMUTABLE_FL)
+ inode->i_flags |= S_IMMUTABLE;
+ else
+ inode->i_flags &= ~S_IMMUTABLE;
- if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode))
- return -EOPNOTSUPP;
+ if (flags & FS_APPEND_FL)
+ inode->i_flags |= S_APPEND;
+ else
+ inode->i_flags &= ~S_APPEND;
- 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");
+ if (flags & FS_NODUMP_FL)
+ hip->userflags |= HFSPLUS_FLG_NODUMP;
+ else
+ hip->userflags &= ~HFSPLUS_FLG_NODUMP;
- return HFSPLUS_ATTRLIST_SIZE;
+ inode->i_ctime = CURRENT_TIME_SEC;
+ mark_inode_dirty(inode);
+
+out_unlock_inode:
+ mutex_unlock(&inode->i_mutex);
+out_drop_write:
+ mnt_drop_write_file(file);
+out:
+ return err;
+}
+
+long hfsplus_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ void __user *argp = (void __user *)arg;
+
+ switch (cmd) {
+ case HFSPLUS_IOC_EXT2_GETFLAGS:
+ return hfsplus_ioctl_getflags(file, argp);
+ case HFSPLUS_IOC_EXT2_SETFLAGS:
+ return hfsplus_ioctl_setflags(file, argp);
+ case HFSPLUS_IOC_BLESS:
+ return hfsplus_ioctl_bless(file, argp);
+ default:
+ return -ENOTTY;
+ }
}
diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c
index dc64fac0083..c90b72ee676 100644
--- a/fs/hfsplus/options.c
+++ b/fs/hfsplus/options.c
@@ -15,6 +15,7 @@
#include <linux/nls.h>
#include <linux/mount.h>
#include <linux/seq_file.h>
+#include <linux/slab.h>
#include "hfsplus_fs.h"
enum {
@@ -22,10 +23,11 @@ enum {
opt_umask, opt_uid, opt_gid,
opt_part, opt_session, opt_nls,
opt_nodecompose, opt_decompose,
+ opt_barrier, opt_nobarrier,
opt_force, opt_err
};
-static match_table_t tokens = {
+static const match_table_t tokens = {
{ opt_creator, "creator=%s" },
{ opt_type, "type=%s" },
{ opt_umask, "umask=%o" },
@@ -36,6 +38,8 @@ static match_table_t tokens = {
{ opt_nls, "nls=%s" },
{ opt_decompose, "decompose" },
{ opt_nodecompose, "nodecompose" },
+ { opt_barrier, "barrier" },
+ { opt_nobarrier, "nobarrier" },
{ opt_force, "force" },
{ opt_err, NULL }
};
@@ -48,9 +52,9 @@ void hfsplus_fill_defaults(struct hfsplus_sb_info *opts)
opts->creator = HFSPLUS_DEF_CR_TYPE;
opts->type = HFSPLUS_DEF_CR_TYPE;
- opts->umask = current->fs->umask;
- opts->uid = current->uid;
- opts->gid = current->gid;
+ opts->umask = current_umask();
+ opts->uid = current_uid();
+ opts->gid = current_gid();
opts->part = -1;
opts->session = -1;
}
@@ -64,6 +68,32 @@ static inline int match_fourchar(substring_t *arg, u32 *result)
return 0;
}
+int hfsplus_parse_options_remount(char *input, int *force)
+{
+ char *p;
+ substring_t args[MAX_OPT_ARGS];
+ int token;
+
+ if (!input)
+ return 1;
+
+ while ((p = strsep(&input, ",")) != NULL) {
+ if (!*p)
+ continue;
+
+ token = match_token(p, tokens, args);
+ switch (token) {
+ case opt_force:
+ *force = 1;
+ break;
+ default:
+ break;
+ }
+ }
+
+ return 1;
+}
+
/* Parse options from mount. Returns 0 on failure */
/* input is the options passed to mount() as a string */
int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi)
@@ -83,71 +113,87 @@ int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi)
switch (token) {
case opt_creator:
if (match_fourchar(&args[0], &sbi->creator)) {
- printk(KERN_ERR "hfs: creator requires a 4 character value\n");
+ pr_err("creator requires a 4 character value\n");
return 0;
}
break;
case opt_type:
if (match_fourchar(&args[0], &sbi->type)) {
- printk(KERN_ERR "hfs: type requires a 4 character value\n");
+ pr_err("type requires a 4 character value\n");
return 0;
}
break;
case opt_umask:
if (match_octal(&args[0], &tmp)) {
- printk(KERN_ERR "hfs: umask requires a value\n");
+ pr_err("umask requires a value\n");
return 0;
}
sbi->umask = (umode_t)tmp;
break;
case opt_uid:
if (match_int(&args[0], &tmp)) {
- printk(KERN_ERR "hfs: uid requires an argument\n");
+ pr_err("uid requires an argument\n");
+ return 0;
+ }
+ sbi->uid = make_kuid(current_user_ns(), (uid_t)tmp);
+ if (!uid_valid(sbi->uid)) {
+ pr_err("invalid uid specified\n");
return 0;
}
- sbi->uid = (uid_t)tmp;
break;
case opt_gid:
if (match_int(&args[0], &tmp)) {
- printk(KERN_ERR "hfs: gid requires an argument\n");
+ pr_err("gid requires an argument\n");
+ return 0;
+ }
+ sbi->gid = make_kgid(current_user_ns(), (gid_t)tmp);
+ if (!gid_valid(sbi->gid)) {
+ pr_err("invalid gid specified\n");
return 0;
}
- sbi->gid = (gid_t)tmp;
break;
case opt_part:
if (match_int(&args[0], &sbi->part)) {
- printk(KERN_ERR "hfs: part requires an argument\n");
+ pr_err("part requires an argument\n");
return 0;
}
break;
case opt_session:
if (match_int(&args[0], &sbi->session)) {
- printk(KERN_ERR "hfs: session requires an argument\n");
+ pr_err("session requires an argument\n");
return 0;
}
break;
case opt_nls:
if (sbi->nls) {
- printk(KERN_ERR "hfs: unable to change nls mapping\n");
+ pr_err("unable to change nls mapping\n");
return 0;
}
p = match_strdup(&args[0]);
- sbi->nls = load_nls(p);
+ if (p)
+ sbi->nls = load_nls(p);
if (!sbi->nls) {
- printk(KERN_ERR "hfs: unable to load nls mapping \"%s\"\n", p);
+ pr_err("unable to load nls mapping \"%s\"\n",
+ p);
kfree(p);
return 0;
}
kfree(p);
break;
case opt_decompose:
- sbi->flags &= ~HFSPLUS_SB_NODECOMPOSE;
+ clear_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags);
break;
case opt_nodecompose:
- sbi->flags |= HFSPLUS_SB_NODECOMPOSE;
+ set_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags);
+ break;
+ case opt_barrier:
+ clear_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags);
+ break;
+ case opt_nobarrier:
+ set_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags);
break;
case opt_force:
- sbi->flags |= HFSPLUS_SB_FORCE;
+ set_bit(HFSPLUS_SB_FORCE, &sbi->flags);
break;
default:
return 0;
@@ -167,22 +213,26 @@ done:
return 1;
}
-int hfsplus_show_options(struct seq_file *seq, struct vfsmount *mnt)
+int hfsplus_show_options(struct seq_file *seq, struct dentry *root)
{
- struct hfsplus_sb_info *sbi = &HFSPLUS_SB(mnt->mnt_sb);
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(root->d_sb);
if (sbi->creator != HFSPLUS_DEF_CR_TYPE)
seq_printf(seq, ",creator=%.4s", (char *)&sbi->creator);
if (sbi->type != HFSPLUS_DEF_CR_TYPE)
seq_printf(seq, ",type=%.4s", (char *)&sbi->type);
- seq_printf(seq, ",umask=%o,uid=%u,gid=%u", sbi->umask, sbi->uid, sbi->gid);
+ seq_printf(seq, ",umask=%o,uid=%u,gid=%u", sbi->umask,
+ from_kuid_munged(&init_user_ns, sbi->uid),
+ from_kgid_munged(&init_user_ns, sbi->gid));
if (sbi->part >= 0)
seq_printf(seq, ",part=%u", sbi->part);
if (sbi->session >= 0)
seq_printf(seq, ",session=%u", sbi->session);
if (sbi->nls)
seq_printf(seq, ",nls=%s", sbi->nls->charset);
- if (sbi->flags & HFSPLUS_SB_NODECOMPOSE)
- seq_printf(seq, ",nodecompose");
+ if (test_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags))
+ seq_puts(seq, ",nodecompose");
+ if (test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
+ seq_puts(seq, ",nobarrier");
return 0;
}
diff --git a/fs/hfsplus/part_tbl.c b/fs/hfsplus/part_tbl.c
index 1528a6fd029..eb355d81e27 100644
--- a/fs/hfsplus/part_tbl.c
+++ b/fs/hfsplus/part_tbl.c
@@ -2,7 +2,8 @@
* linux/fs/hfsplus/part_tbl.c
*
* Copyright (C) 1996-1997 Paul H. Hargrove
- * This file may be distributed under the terms of the GNU General Public License.
+ * This file may be distributed under the terms of
+ * the GNU General Public License.
*
* Original code to handle the new style Mac partition table based on
* a patch contributed by Holger Schemel (aeglos@valinor.owl.de).
@@ -13,6 +14,7 @@
*
*/
+#include <linux/slab.h>
#include "hfsplus_fs.h"
/* offsets to various blocks */
@@ -58,76 +60,98 @@ struct new_pmap {
*/
struct old_pmap {
__be16 pdSig; /* Signature bytes */
- struct old_pmap_entry {
+ struct old_pmap_entry {
__be32 pdStart;
__be32 pdSize;
__be32 pdFSID;
} pdEntry[42];
} __packed;
+static int hfs_parse_old_pmap(struct super_block *sb, struct old_pmap *pm,
+ sector_t *part_start, sector_t *part_size)
+{
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+ int i;
+
+ for (i = 0; i < 42; i++) {
+ struct old_pmap_entry *p = &pm->pdEntry[i];
+
+ if (p->pdStart && p->pdSize &&
+ p->pdFSID == cpu_to_be32(0x54465331)/*"TFS1"*/ &&
+ (sbi->part < 0 || sbi->part == i)) {
+ *part_start += be32_to_cpu(p->pdStart);
+ *part_size = be32_to_cpu(p->pdSize);
+ return 0;
+ }
+ }
+
+ return -ENOENT;
+}
+
+static int hfs_parse_new_pmap(struct super_block *sb, void *buf,
+ struct new_pmap *pm, sector_t *part_start, sector_t *part_size)
+{
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+ int size = be32_to_cpu(pm->pmMapBlkCnt);
+ int buf_size = hfsplus_min_io_size(sb);
+ int res;
+ int i = 0;
+
+ do {
+ if (!memcmp(pm->pmPartType, "Apple_HFS", 9) &&
+ (sbi->part < 0 || sbi->part == i)) {
+ *part_start += be32_to_cpu(pm->pmPyPartStart);
+ *part_size = be32_to_cpu(pm->pmPartBlkCnt);
+ return 0;
+ }
+
+ if (++i >= size)
+ return -ENOENT;
+
+ pm = (struct new_pmap *)((u8 *)pm + HFSPLUS_SECTOR_SIZE);
+ if ((u8 *)pm - (u8 *)buf >= buf_size) {
+ res = hfsplus_submit_bio(sb,
+ *part_start + HFS_PMAP_BLK + i,
+ buf, (void **)&pm, READ);
+ if (res)
+ return res;
+ }
+ } while (pm->pmSig == cpu_to_be16(HFS_NEW_PMAP_MAGIC));
+
+ return -ENOENT;
+}
+
/*
- * hfs_part_find()
- *
- * Parse the partition map looking for the
- * start and length of the 'part'th HFS partition.
+ * Parse the partition map looking for the start and length of a
+ * HFS/HFS+ partition.
*/
int hfs_part_find(struct super_block *sb,
- sector_t *part_start, sector_t *part_size)
+ sector_t *part_start, sector_t *part_size)
{
- struct buffer_head *bh;
- __be16 *data;
- int i, size, res;
+ void *buf, *data;
+ int res;
- res = -ENOENT;
- bh = sb_bread512(sb, *part_start + HFS_PMAP_BLK, data);
- if (!bh)
- return -EIO;
+ buf = kmalloc(hfsplus_min_io_size(sb), GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
- switch (be16_to_cpu(*data)) {
+ res = hfsplus_submit_bio(sb, *part_start + HFS_PMAP_BLK,
+ buf, &data, READ);
+ if (res)
+ goto out;
+
+ switch (be16_to_cpu(*((__be16 *)data))) {
case HFS_OLD_PMAP_MAGIC:
- {
- struct old_pmap *pm;
- struct old_pmap_entry *p;
-
- pm = (struct old_pmap *)bh->b_data;
- p = pm->pdEntry;
- size = 42;
- for (i = 0; i < size; p++, i++) {
- if (p->pdStart && p->pdSize &&
- p->pdFSID == cpu_to_be32(0x54465331)/*"TFS1"*/ &&
- (HFSPLUS_SB(sb).part < 0 || HFSPLUS_SB(sb).part == i)) {
- *part_start += be32_to_cpu(p->pdStart);
- *part_size = be32_to_cpu(p->pdSize);
- res = 0;
- }
- }
+ res = hfs_parse_old_pmap(sb, data, part_start, part_size);
break;
- }
case HFS_NEW_PMAP_MAGIC:
- {
- struct new_pmap *pm;
-
- pm = (struct new_pmap *)bh->b_data;
- size = be32_to_cpu(pm->pmMapBlkCnt);
- for (i = 0; i < size;) {
- if (!memcmp(pm->pmPartType,"Apple_HFS", 9) &&
- (HFSPLUS_SB(sb).part < 0 || HFSPLUS_SB(sb).part == i)) {
- *part_start += be32_to_cpu(pm->pmPyPartStart);
- *part_size = be32_to_cpu(pm->pmPartBlkCnt);
- res = 0;
- break;
- }
- brelse(bh);
- bh = sb_bread512(sb, *part_start + HFS_PMAP_BLK + ++i, pm);
- if (!bh)
- return -EIO;
- if (pm->pmSig != cpu_to_be16(HFS_NEW_PMAP_MAGIC))
- break;
- }
+ res = hfs_parse_new_pmap(sb, buf, data, part_start, part_size);
+ break;
+ default:
+ res = -ENOENT;
break;
- }
}
- brelse(bh);
-
+out:
+ kfree(buf);
return res;
}
diff --git a/fs/hfsplus/posix_acl.c b/fs/hfsplus/posix_acl.c
new file mode 100644
index 00000000000..df0c9af68d0
--- /dev/null
+++ b/fs/hfsplus/posix_acl.c
@@ -0,0 +1,140 @@
+/*
+ * linux/fs/hfsplus/posix_acl.c
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Handler for Posix Access Control Lists (ACLs) support.
+ */
+
+#include "hfsplus_fs.h"
+#include "xattr.h"
+#include "acl.h"
+
+struct posix_acl *hfsplus_get_posix_acl(struct inode *inode, int type)
+{
+ struct posix_acl *acl;
+ char *xattr_name;
+ char *value = NULL;
+ ssize_t size;
+
+ hfs_dbg(ACL_MOD, "[%s]: ino %lu\n", __func__, inode->i_ino);
+
+ switch (type) {
+ case ACL_TYPE_ACCESS:
+ xattr_name = POSIX_ACL_XATTR_ACCESS;
+ break;
+ case ACL_TYPE_DEFAULT:
+ xattr_name = POSIX_ACL_XATTR_DEFAULT;
+ break;
+ default:
+ return ERR_PTR(-EINVAL);
+ }
+
+ size = __hfsplus_getxattr(inode, xattr_name, NULL, 0);
+
+ if (size > 0) {
+ value = (char *)hfsplus_alloc_attr_entry();
+ if (unlikely(!value))
+ return ERR_PTR(-ENOMEM);
+ size = __hfsplus_getxattr(inode, xattr_name, value, size);
+ }
+
+ if (size > 0)
+ acl = posix_acl_from_xattr(&init_user_ns, value, size);
+ else if (size == -ENODATA)
+ acl = NULL;
+ else
+ acl = ERR_PTR(size);
+
+ hfsplus_destroy_attr_entry((hfsplus_attr_entry *)value);
+
+ if (!IS_ERR(acl))
+ set_cached_acl(inode, type, acl);
+
+ return acl;
+}
+
+int hfsplus_set_posix_acl(struct inode *inode, struct posix_acl *acl,
+ int type)
+{
+ int err;
+ char *xattr_name;
+ size_t size = 0;
+ char *value = NULL;
+
+ hfs_dbg(ACL_MOD, "[%s]: ino %lu\n", __func__, inode->i_ino);
+
+ switch (type) {
+ case ACL_TYPE_ACCESS:
+ xattr_name = POSIX_ACL_XATTR_ACCESS;
+ if (acl) {
+ err = posix_acl_equiv_mode(acl, &inode->i_mode);
+ if (err < 0)
+ return err;
+ }
+ err = 0;
+ break;
+
+ case ACL_TYPE_DEFAULT:
+ xattr_name = POSIX_ACL_XATTR_DEFAULT;
+ if (!S_ISDIR(inode->i_mode))
+ return acl ? -EACCES : 0;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ if (acl) {
+ size = posix_acl_xattr_size(acl->a_count);
+ if (unlikely(size > HFSPLUS_MAX_INLINE_DATA_SIZE))
+ return -ENOMEM;
+ value = (char *)hfsplus_alloc_attr_entry();
+ if (unlikely(!value))
+ return -ENOMEM;
+ err = posix_acl_to_xattr(&init_user_ns, acl, value, size);
+ if (unlikely(err < 0))
+ goto end_set_acl;
+ }
+
+ err = __hfsplus_setxattr(inode, xattr_name, value, size, 0);
+
+end_set_acl:
+ hfsplus_destroy_attr_entry((hfsplus_attr_entry *)value);
+
+ if (!err)
+ set_cached_acl(inode, type, acl);
+
+ return err;
+}
+
+int hfsplus_init_posix_acl(struct inode *inode, struct inode *dir)
+{
+ int err = 0;
+ struct posix_acl *default_acl, *acl;
+
+ hfs_dbg(ACL_MOD,
+ "[%s]: ino %lu, dir->ino %lu\n",
+ __func__, inode->i_ino, dir->i_ino);
+
+ if (S_ISLNK(inode->i_mode))
+ return 0;
+
+ err = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl);
+ if (err)
+ return err;
+
+ if (default_acl) {
+ err = hfsplus_set_posix_acl(inode, default_acl,
+ ACL_TYPE_DEFAULT);
+ posix_acl_release(default_acl);
+ }
+
+ if (acl) {
+ if (!err)
+ err = hfsplus_set_posix_acl(inode, acl,
+ ACL_TYPE_ACCESS);
+ posix_acl_release(acl);
+ }
+ return err;
+}
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index b0f9ad362d1..4cf2024b87d 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -10,6 +10,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/pagemap.h>
+#include <linux/blkdev.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/vfs.h>
@@ -19,41 +20,13 @@ 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"
-struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino)
+static int hfsplus_system_read_inode(struct inode *inode)
{
- struct hfs_find_data fd;
- struct hfsplus_vh *vhdr;
- struct inode *inode;
- long err = -EIO;
-
- inode = iget_locked(sb, ino);
- if (!inode)
- return ERR_PTR(-ENOMEM);
- if (!(inode->i_state & I_NEW))
- return inode;
+ struct hfsplus_vh *vhdr = HFSPLUS_SB(inode->i_sb)->s_vhdr;
- INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
- init_MUTEX(&HFSPLUS_I(inode).extents_lock);
- HFSPLUS_I(inode).flags = 0;
- HFSPLUS_I(inode).rsrc_inode = NULL;
- atomic_set(&HFSPLUS_I(inode).opencnt, 0);
-
- if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) {
- read_inode:
- hfs_find_init(HFSPLUS_SB(inode->i_sb).cat_tree, &fd);
- err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
- if (!err)
- err = hfsplus_cat_read_inode(inode, &fd);
- hfs_find_exit(&fd);
- if (err)
- goto bad_inode;
- goto done;
- }
- vhdr = HFSPLUS_SB(inode->i_sb).s_vhdr;
- switch(inode->i_ino) {
- case HFSPLUS_ROOT_CNID:
- goto read_inode;
+ switch (inode->i_ino) {
case HFSPLUS_EXT_CNID:
hfsplus_inode_read_fork(inode, &vhdr->ext_file);
inode->i_mapping->a_ops = &hfsplus_btree_aops;
@@ -74,148 +47,257 @@ struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino)
inode->i_mapping->a_ops = &hfsplus_btree_aops;
break;
default:
- goto bad_inode;
+ return -EIO;
+ }
+
+ return 0;
+}
+
+struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino)
+{
+ struct hfs_find_data fd;
+ struct inode *inode;
+ int err;
+
+ inode = iget_locked(sb, ino);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+ if (!(inode->i_state & I_NEW))
+ return inode;
+
+ INIT_LIST_HEAD(&HFSPLUS_I(inode)->open_dir_list);
+ mutex_init(&HFSPLUS_I(inode)->extents_lock);
+ HFSPLUS_I(inode)->flags = 0;
+ HFSPLUS_I(inode)->extent_state = 0;
+ HFSPLUS_I(inode)->rsrc_inode = NULL;
+ atomic_set(&HFSPLUS_I(inode)->opencnt, 0);
+
+ if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID ||
+ inode->i_ino == HFSPLUS_ROOT_CNID) {
+ err = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);
+ if (!err) {
+ err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
+ if (!err)
+ err = hfsplus_cat_read_inode(inode, &fd);
+ hfs_find_exit(&fd);
+ }
+ } else {
+ err = hfsplus_system_read_inode(inode);
+ }
+
+ if (err) {
+ iget_failed(inode);
+ return ERR_PTR(err);
}
-done:
unlock_new_inode(inode);
return inode;
-
-bad_inode:
- iget_failed(inode);
- return ERR_PTR(err);
}
-static int hfsplus_write_inode(struct inode *inode, int unused)
+static int hfsplus_system_write_inode(struct inode *inode)
{
- struct hfsplus_vh *vhdr;
- int ret = 0;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
+ struct hfsplus_vh *vhdr = sbi->s_vhdr;
+ struct hfsplus_fork_raw *fork;
+ struct hfs_btree *tree = NULL;
- dprint(DBG_INODE, "hfsplus_write_inode: %lu\n", inode->i_ino);
- hfsplus_ext_write_extent(inode);
- if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) {
- return hfsplus_cat_write_inode(inode);
- }
- vhdr = HFSPLUS_SB(inode->i_sb).s_vhdr;
switch (inode->i_ino) {
- case HFSPLUS_ROOT_CNID:
- ret = hfsplus_cat_write_inode(inode);
- break;
case HFSPLUS_EXT_CNID:
- if (vhdr->ext_file.total_size != cpu_to_be64(inode->i_size)) {
- HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
- inode->i_sb->s_dirt = 1;
- }
- hfsplus_inode_write_fork(inode, &vhdr->ext_file);
- hfs_btree_write(HFSPLUS_SB(inode->i_sb).ext_tree);
+ fork = &vhdr->ext_file;
+ tree = sbi->ext_tree;
break;
case HFSPLUS_CAT_CNID:
- if (vhdr->cat_file.total_size != cpu_to_be64(inode->i_size)) {
- HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
- inode->i_sb->s_dirt = 1;
- }
- hfsplus_inode_write_fork(inode, &vhdr->cat_file);
- hfs_btree_write(HFSPLUS_SB(inode->i_sb).cat_tree);
+ fork = &vhdr->cat_file;
+ tree = sbi->cat_tree;
break;
case HFSPLUS_ALLOC_CNID:
- if (vhdr->alloc_file.total_size != cpu_to_be64(inode->i_size)) {
- HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
- inode->i_sb->s_dirt = 1;
- }
- hfsplus_inode_write_fork(inode, &vhdr->alloc_file);
+ fork = &vhdr->alloc_file;
break;
case HFSPLUS_START_CNID:
- if (vhdr->start_file.total_size != cpu_to_be64(inode->i_size)) {
- HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
- inode->i_sb->s_dirt = 1;
- }
- hfsplus_inode_write_fork(inode, &vhdr->start_file);
+ fork = &vhdr->start_file;
break;
case HFSPLUS_ATTR_CNID:
- if (vhdr->attr_file.total_size != cpu_to_be64(inode->i_size)) {
- HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP;
- inode->i_sb->s_dirt = 1;
- }
- hfsplus_inode_write_fork(inode, &vhdr->attr_file);
- hfs_btree_write(HFSPLUS_SB(inode->i_sb).attr_tree);
+ fork = &vhdr->attr_file;
+ tree = sbi->attr_tree;
break;
+ default:
+ return -EIO;
+ }
+
+ if (fork->total_size != cpu_to_be64(inode->i_size)) {
+ set_bit(HFSPLUS_SB_WRITEBACKUP, &sbi->flags);
+ hfsplus_mark_mdb_dirty(inode->i_sb);
+ }
+ hfsplus_inode_write_fork(inode, fork);
+ if (tree) {
+ int err = hfs_btree_write(tree);
+
+ if (err) {
+ pr_err("b-tree write err: %d, ino %lu\n",
+ err, inode->i_ino);
+ return err;
+ }
}
- return ret;
+ return 0;
}
-static void hfsplus_clear_inode(struct inode *inode)
+static int hfsplus_write_inode(struct inode *inode,
+ struct writeback_control *wbc)
{
- dprint(DBG_INODE, "hfsplus_clear_inode: %lu\n", inode->i_ino);
+ int err;
+
+ hfs_dbg(INODE, "hfsplus_write_inode: %lu\n", inode->i_ino);
+
+ err = hfsplus_ext_write_extent(inode);
+ if (err)
+ return err;
+
+ if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID ||
+ inode->i_ino == HFSPLUS_ROOT_CNID)
+ return hfsplus_cat_write_inode(inode);
+ else
+ return hfsplus_system_write_inode(inode);
+}
+
+static void hfsplus_evict_inode(struct inode *inode)
+{
+ hfs_dbg(INODE, "hfsplus_evict_inode: %lu\n", inode->i_ino);
+ truncate_inode_pages_final(&inode->i_data);
+ clear_inode(inode);
if (HFSPLUS_IS_RSRC(inode)) {
- HFSPLUS_I(HFSPLUS_I(inode).rsrc_inode).rsrc_inode = NULL;
- iput(HFSPLUS_I(inode).rsrc_inode);
+ HFSPLUS_I(HFSPLUS_I(inode)->rsrc_inode)->rsrc_inode = NULL;
+ iput(HFSPLUS_I(inode)->rsrc_inode);
+ }
+}
+
+static int hfsplus_sync_fs(struct super_block *sb, int wait)
+{
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+ struct hfsplus_vh *vhdr = sbi->s_vhdr;
+ int write_backup = 0;
+ int error, error2;
+
+ if (!wait)
+ return 0;
+
+ hfs_dbg(SUPER, "hfsplus_sync_fs\n");
+
+ /*
+ * Explicitly write out the special metadata inodes.
+ *
+ * While these special inodes are marked as hashed and written
+ * out peridocically by the flusher threads we redirty them
+ * during writeout of normal inodes, and thus the life lock
+ * prevents us from getting the latest state to disk.
+ */
+ error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
+ 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;
+
+ mutex_lock(&sbi->vh_mutex);
+ mutex_lock(&sbi->alloc_mutex);
+ vhdr->free_blocks = cpu_to_be32(sbi->free_blocks);
+ vhdr->next_cnid = cpu_to_be32(sbi->next_cnid);
+ vhdr->folder_count = cpu_to_be32(sbi->folder_count);
+ vhdr->file_count = cpu_to_be32(sbi->file_count);
+
+ if (test_and_clear_bit(HFSPLUS_SB_WRITEBACKUP, &sbi->flags)) {
+ memcpy(sbi->s_backup_vhdr, sbi->s_vhdr, sizeof(*sbi->s_vhdr));
+ write_backup = 1;
+ }
+
+ error2 = hfsplus_submit_bio(sb,
+ sbi->part_start + HFSPLUS_VOLHEAD_SECTOR,
+ sbi->s_vhdr_buf, NULL, WRITE_SYNC);
+ if (!error)
+ error = error2;
+ if (!write_backup)
+ goto out;
+
+ error2 = hfsplus_submit_bio(sb,
+ sbi->part_start + sbi->sect_count - 2,
+ sbi->s_backup_vhdr_buf, NULL, WRITE_SYNC);
+ if (!error)
+ error2 = error;
+out:
+ mutex_unlock(&sbi->alloc_mutex);
+ mutex_unlock(&sbi->vh_mutex);
+
+ if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
+ blkdev_issue_flush(sb->s_bdev, GFP_KERNEL, NULL);
+
+ return error;
+}
+
+static void delayed_sync_fs(struct work_struct *work)
+{
+ int err;
+ struct hfsplus_sb_info *sbi;
+
+ sbi = container_of(work, struct hfsplus_sb_info, sync_work.work);
+
+ spin_lock(&sbi->work_lock);
+ sbi->work_queued = 0;
+ spin_unlock(&sbi->work_lock);
+
+ err = hfsplus_sync_fs(sbi->alloc_file->i_sb, 1);
+ if (err)
+ pr_err("delayed sync fs err %d\n", err);
}
-static void hfsplus_write_super(struct super_block *sb)
+void hfsplus_mark_mdb_dirty(struct super_block *sb)
{
- struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+ unsigned long delay;
- dprint(DBG_SUPER, "hfsplus_write_super\n");
- sb->s_dirt = 0;
if (sb->s_flags & MS_RDONLY)
- /* warn? */
return;
- vhdr->free_blocks = cpu_to_be32(HFSPLUS_SB(sb).free_blocks);
- vhdr->next_alloc = cpu_to_be32(HFSPLUS_SB(sb).next_alloc);
- vhdr->next_cnid = cpu_to_be32(HFSPLUS_SB(sb).next_cnid);
- vhdr->folder_count = cpu_to_be32(HFSPLUS_SB(sb).folder_count);
- vhdr->file_count = cpu_to_be32(HFSPLUS_SB(sb).file_count);
-
- mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh);
- if (HFSPLUS_SB(sb).flags & HFSPLUS_SB_WRITEBACKUP) {
- if (HFSPLUS_SB(sb).sect_count) {
- struct buffer_head *bh;
- u32 block, offset;
-
- block = HFSPLUS_SB(sb).blockoffset;
- block += (HFSPLUS_SB(sb).sect_count - 2) >> (sb->s_blocksize_bits - 9);
- offset = ((HFSPLUS_SB(sb).sect_count - 2) << 9) & (sb->s_blocksize - 1);
- printk(KERN_DEBUG "hfs: backup: %u,%u,%u,%u\n", HFSPLUS_SB(sb).blockoffset,
- HFSPLUS_SB(sb).sect_count, block, offset);
- bh = sb_bread(sb, block);
- if (bh) {
- vhdr = (struct hfsplus_vh *)(bh->b_data + offset);
- if (be16_to_cpu(vhdr->signature) == HFSPLUS_VOLHEAD_SIG) {
- memcpy(vhdr, HFSPLUS_SB(sb).s_vhdr, sizeof(*vhdr));
- mark_buffer_dirty(bh);
- brelse(bh);
- } else
- printk(KERN_WARNING "hfs: backup not found!\n");
- }
- }
- HFSPLUS_SB(sb).flags &= ~HFSPLUS_SB_WRITEBACKUP;
+ spin_lock(&sbi->work_lock);
+ if (!sbi->work_queued) {
+ delay = msecs_to_jiffies(dirty_writeback_interval * 10);
+ queue_delayed_work(system_long_wq, &sbi->sync_work, delay);
+ sbi->work_queued = 1;
}
+ spin_unlock(&sbi->work_lock);
}
static void hfsplus_put_super(struct super_block *sb)
{
- dprint(DBG_SUPER, "hfsplus_put_super\n");
- if (!sb->s_fs_info)
- return;
- if (!(sb->s_flags & MS_RDONLY) && HFSPLUS_SB(sb).s_vhdr) {
- struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+
+ hfs_dbg(SUPER, "hfsplus_put_super\n");
+
+ cancel_delayed_work_sync(&sbi->sync_work);
+
+ if (!(sb->s_flags & MS_RDONLY) && sbi->s_vhdr) {
+ struct hfsplus_vh *vhdr = sbi->s_vhdr;
vhdr->modify_date = hfsp_now2mt();
vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_UNMNT);
vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_INCNSTNT);
- mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh);
- sync_dirty_buffer(HFSPLUS_SB(sb).s_vhbh);
+
+ hfsplus_sync_fs(sb, 1);
}
- hfs_btree_close(HFSPLUS_SB(sb).cat_tree);
- hfs_btree_close(HFSPLUS_SB(sb).ext_tree);
- iput(HFSPLUS_SB(sb).alloc_file);
- iput(HFSPLUS_SB(sb).hidden_dir);
- brelse(HFSPLUS_SB(sb).s_vhbh);
- if (HFSPLUS_SB(sb).nls)
- unload_nls(HFSPLUS_SB(sb).nls);
+ hfs_btree_close(sbi->attr_tree);
+ hfs_btree_close(sbi->cat_tree);
+ hfs_btree_close(sbi->ext_tree);
+ iput(sbi->alloc_file);
+ iput(sbi->hidden_dir);
+ kfree(sbi->s_vhdr_buf);
+ kfree(sbi->s_backup_vhdr_buf);
+ unload_nls(sbi->nls);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
}
@@ -223,14 +305,18 @@ static void hfsplus_put_super(struct super_block *sb)
static int hfsplus_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+ u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
buf->f_type = HFSPLUS_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
- buf->f_blocks = HFSPLUS_SB(sb).total_blocks << HFSPLUS_SB(sb).fs_shift;
- buf->f_bfree = HFSPLUS_SB(sb).free_blocks << HFSPLUS_SB(sb).fs_shift;
+ buf->f_blocks = sbi->total_blocks << sbi->fs_shift;
+ buf->f_bfree = sbi->free_blocks << sbi->fs_shift;
buf->f_bavail = buf->f_bfree;
buf->f_files = 0xFFFFFFFF;
- buf->f_ffree = 0xFFFFFFFF - HFSPLUS_SB(sb).next_cnid;
+ buf->f_ffree = 0xFFFFFFFF - sbi->next_cnid;
+ buf->f_fsid.val[0] = (u32)id;
+ buf->f_fsid.val[1] = (u32)(id >> 32);
buf->f_namelen = HFSPLUS_MAX_STRLEN;
return 0;
@@ -238,30 +324,30 @@ static int hfsplus_statfs(struct dentry *dentry, struct kstatfs *buf)
static int hfsplus_remount(struct super_block *sb, int *flags, char *data)
{
+ sync_filesystem(sb);
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
return 0;
if (!(*flags & MS_RDONLY)) {
- struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
- struct hfsplus_sb_info sbi;
+ struct hfsplus_vh *vhdr = HFSPLUS_SB(sb)->s_vhdr;
+ int force = 0;
- memset(&sbi, 0, sizeof(struct hfsplus_sb_info));
- sbi.nls = HFSPLUS_SB(sb).nls;
- if (!hfsplus_parse_options(data, &sbi))
+ if (!hfsplus_parse_options_remount(data, &force))
return -EINVAL;
if (!(vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_UNMNT))) {
- printk(KERN_WARNING "hfs: filesystem was not cleanly unmounted, "
- "running fsck.hfsplus is recommended. leaving read-only.\n");
+ pr_warn("filesystem was not cleanly unmounted, running fsck.hfsplus is recommended. leaving read-only.\n");
sb->s_flags |= MS_RDONLY;
*flags |= MS_RDONLY;
- } else if (sbi.flags & HFSPLUS_SB_FORCE) {
+ } else if (force) {
/* nothing */
- } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) {
- printk(KERN_WARNING "hfs: filesystem is marked locked, leaving read-only.\n");
+ } else if (vhdr->attributes &
+ cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) {
+ pr_warn("filesystem is marked locked, leaving read-only.\n");
sb->s_flags |= MS_RDONLY;
*flags |= MS_RDONLY;
- } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_JOURNALED)) {
- printk(KERN_WARNING "hfs: filesystem is marked journaled, leaving read-only.\n");
+ } else if (vhdr->attributes &
+ cpu_to_be32(HFSPLUS_VOL_JOURNALED)) {
+ pr_warn("filesystem is marked journaled, leaving read-only.\n");
sb->s_flags |= MS_RDONLY;
*flags |= MS_RDONLY;
}
@@ -273,9 +359,9 @@ static const struct super_operations hfsplus_sops = {
.alloc_inode = hfsplus_alloc_inode,
.destroy_inode = hfsplus_destroy_inode,
.write_inode = hfsplus_write_inode,
- .clear_inode = hfsplus_clear_inode,
+ .evict_inode = hfsplus_evict_inode,
.put_super = hfsplus_put_super,
- .write_super = hfsplus_write_super,
+ .sync_fs = hfsplus_sync_fs,
.statfs = hfsplus_statfs,
.remount_fs = hfsplus_remount,
.show_options = hfsplus_show_options,
@@ -290,161 +376,232 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
struct inode *root, *inode;
struct qstr str;
struct nls_table *nls = NULL;
- int err = -EINVAL;
+ u64 last_fs_block, last_fs_page;
+ int err;
+ err = -ENOMEM;
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
- return -ENOMEM;
+ goto out;
sb->s_fs_info = sbi;
- INIT_HLIST_HEAD(&sbi->rsrc_inodes);
+ mutex_init(&sbi->alloc_mutex);
+ mutex_init(&sbi->vh_mutex);
+ spin_lock_init(&sbi->work_lock);
+ INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
hfsplus_fill_defaults(sbi);
+
+ err = -EINVAL;
if (!hfsplus_parse_options(data, sbi)) {
- printk(KERN_ERR "hfs: unable to parse mount options\n");
- err = -EINVAL;
- goto cleanup;
+ pr_err("unable to parse mount options\n");
+ goto out_unload_nls;
}
/* temporarily use utf8 to correctly find the hidden dir below */
nls = sbi->nls;
sbi->nls = load_nls("utf8");
if (!sbi->nls) {
- printk(KERN_ERR "hfs: unable to load nls for utf8\n");
- err = -EINVAL;
- goto cleanup;
+ pr_err("unable to load nls for utf8\n");
+ goto out_unload_nls;
}
/* Grab the volume header */
if (hfsplus_read_wrapper(sb)) {
if (!silent)
- printk(KERN_WARNING "hfs: unable to find HFS+ superblock\n");
- err = -EINVAL;
- goto cleanup;
+ pr_warn("unable to find HFS+ superblock\n");
+ goto out_unload_nls;
}
- vhdr = HFSPLUS_SB(sb).s_vhdr;
+ vhdr = sbi->s_vhdr;
/* Copy parts of the volume header into the superblock */
sb->s_magic = HFSPLUS_VOLHEAD_SIG;
if (be16_to_cpu(vhdr->version) < HFSPLUS_MIN_VERSION ||
be16_to_cpu(vhdr->version) > HFSPLUS_CURRENT_VERSION) {
- printk(KERN_ERR "hfs: wrong filesystem version\n");
- goto cleanup;
+ pr_err("wrong filesystem version\n");
+ goto out_free_vhdr;
+ }
+ sbi->total_blocks = be32_to_cpu(vhdr->total_blocks);
+ sbi->free_blocks = be32_to_cpu(vhdr->free_blocks);
+ sbi->next_cnid = be32_to_cpu(vhdr->next_cnid);
+ sbi->file_count = be32_to_cpu(vhdr->file_count);
+ sbi->folder_count = be32_to_cpu(vhdr->folder_count);
+ sbi->data_clump_blocks =
+ be32_to_cpu(vhdr->data_clump_sz) >> sbi->alloc_blksz_shift;
+ if (!sbi->data_clump_blocks)
+ sbi->data_clump_blocks = 1;
+ sbi->rsrc_clump_blocks =
+ be32_to_cpu(vhdr->rsrc_clump_sz) >> sbi->alloc_blksz_shift;
+ if (!sbi->rsrc_clump_blocks)
+ sbi->rsrc_clump_blocks = 1;
+
+ err = -EFBIG;
+ last_fs_block = sbi->total_blocks - 1;
+ last_fs_page = (last_fs_block << sbi->alloc_blksz_shift) >>
+ PAGE_CACHE_SHIFT;
+
+ if ((last_fs_block > (sector_t)(~0ULL) >> (sbi->alloc_blksz_shift - 9)) ||
+ (last_fs_page > (pgoff_t)(~0ULL))) {
+ pr_err("filesystem size too large\n");
+ goto out_free_vhdr;
}
- HFSPLUS_SB(sb).total_blocks = be32_to_cpu(vhdr->total_blocks);
- HFSPLUS_SB(sb).free_blocks = be32_to_cpu(vhdr->free_blocks);
- HFSPLUS_SB(sb).next_alloc = be32_to_cpu(vhdr->next_alloc);
- HFSPLUS_SB(sb).next_cnid = be32_to_cpu(vhdr->next_cnid);
- HFSPLUS_SB(sb).file_count = be32_to_cpu(vhdr->file_count);
- HFSPLUS_SB(sb).folder_count = be32_to_cpu(vhdr->folder_count);
- HFSPLUS_SB(sb).data_clump_blocks = be32_to_cpu(vhdr->data_clump_sz) >> HFSPLUS_SB(sb).alloc_blksz_shift;
- if (!HFSPLUS_SB(sb).data_clump_blocks)
- HFSPLUS_SB(sb).data_clump_blocks = 1;
- HFSPLUS_SB(sb).rsrc_clump_blocks = be32_to_cpu(vhdr->rsrc_clump_sz) >> HFSPLUS_SB(sb).alloc_blksz_shift;
- if (!HFSPLUS_SB(sb).rsrc_clump_blocks)
- HFSPLUS_SB(sb).rsrc_clump_blocks = 1;
/* Set up operations so we can load metadata */
sb->s_op = &hfsplus_sops;
sb->s_maxbytes = MAX_LFS_FILESIZE;
if (!(vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_UNMNT))) {
- printk(KERN_WARNING "hfs: Filesystem was not cleanly unmounted, "
- "running fsck.hfsplus is recommended. mounting read-only.\n");
+ pr_warn("Filesystem was not cleanly unmounted, running fsck.hfsplus is recommended. mounting read-only.\n");
sb->s_flags |= MS_RDONLY;
- } else if (sbi->flags & HFSPLUS_SB_FORCE) {
+ } else if (test_and_clear_bit(HFSPLUS_SB_FORCE, &sbi->flags)) {
/* nothing */
} else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) {
- printk(KERN_WARNING "hfs: Filesystem is marked locked, mounting read-only.\n");
+ pr_warn("Filesystem is marked locked, mounting read-only.\n");
sb->s_flags |= MS_RDONLY;
- } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_JOURNALED)) {
- printk(KERN_WARNING "hfs: write access to a jounaled filesystem is not supported, "
- "use the force option at your own risk, mounting read-only.\n");
+ } else if ((vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_JOURNALED)) &&
+ !(sb->s_flags & MS_RDONLY)) {
+ pr_warn("write access to a journaled filesystem is not supported, use the force option at your own risk, mounting read-only.\n");
sb->s_flags |= MS_RDONLY;
}
- sbi->flags &= ~HFSPLUS_SB_FORCE;
+
+ err = -EINVAL;
/* Load metadata objects (B*Trees) */
- HFSPLUS_SB(sb).ext_tree = hfs_btree_open(sb, HFSPLUS_EXT_CNID);
- if (!HFSPLUS_SB(sb).ext_tree) {
- printk(KERN_ERR "hfs: failed to load extents file\n");
- goto cleanup;
+ sbi->ext_tree = hfs_btree_open(sb, HFSPLUS_EXT_CNID);
+ if (!sbi->ext_tree) {
+ pr_err("failed to load extents file\n");
+ goto out_free_vhdr;
}
- HFSPLUS_SB(sb).cat_tree = hfs_btree_open(sb, HFSPLUS_CAT_CNID);
- if (!HFSPLUS_SB(sb).cat_tree) {
- printk(KERN_ERR "hfs: failed to load catalog file\n");
- goto cleanup;
+ sbi->cat_tree = hfs_btree_open(sb, HFSPLUS_CAT_CNID);
+ if (!sbi->cat_tree) {
+ pr_err("failed to load catalog file\n");
+ goto out_close_ext_tree;
+ }
+ atomic_set(&sbi->attr_tree_state, HFSPLUS_EMPTY_ATTR_TREE);
+ if (vhdr->attr_file.total_blocks != 0) {
+ sbi->attr_tree = hfs_btree_open(sb, HFSPLUS_ATTR_CNID);
+ if (!sbi->attr_tree) {
+ pr_err("failed to load attributes file\n");
+ goto out_close_cat_tree;
+ }
+ atomic_set(&sbi->attr_tree_state, HFSPLUS_VALID_ATTR_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");
+ pr_err("failed to load allocation file\n");
err = PTR_ERR(inode);
- goto cleanup;
+ goto out_close_attr_tree;
}
- HFSPLUS_SB(sb).alloc_file = inode;
+ sbi->alloc_file = inode;
/* Load the root directory */
root = hfsplus_iget(sb, HFSPLUS_ROOT_CNID);
if (IS_ERR(root)) {
- printk(KERN_ERR "hfs: failed to load root directory\n");
+ pr_err("failed to load root directory\n");
err = PTR_ERR(root);
- goto cleanup;
+ goto out_put_alloc_file;
}
- sb->s_root = d_alloc_root(root);
+
+ sb->s_d_op = &hfsplus_dentry_operations;
+ sb->s_root = d_make_root(root);
if (!sb->s_root) {
- iput(root);
err = -ENOMEM;
- goto cleanup;
+ goto out_put_alloc_file;
}
- sb->s_root->d_op = &hfsplus_dentry_operations;
str.len = sizeof(HFSP_HIDDENDIR_NAME) - 1;
str.name = HFSP_HIDDENDIR_NAME;
- hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
+ err = hfs_find_init(sbi->cat_tree, &fd);
+ if (err)
+ goto out_put_root;
hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_ROOT_CNID, &str);
if (!hfs_brec_read(&fd, &entry, sizeof(entry))) {
hfs_find_exit(&fd);
if (entry.type != cpu_to_be16(HFSPLUS_FOLDER))
- goto cleanup;
+ goto out_put_root;
inode = hfsplus_iget(sb, be32_to_cpu(entry.folder.id));
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
- goto cleanup;
+ goto out_put_root;
}
- HFSPLUS_SB(sb).hidden_dir = inode;
+ sbi->hidden_dir = inode;
} else
hfs_find_exit(&fd);
- if (sb->s_flags & MS_RDONLY)
- goto out;
+ if (!(sb->s_flags & MS_RDONLY)) {
+ /*
+ * H+LX == hfsplusutils, H+Lx == this driver, H+lx is unused
+ * all three are registered with Apple for our use
+ */
+ vhdr->last_mount_vers = cpu_to_be32(HFSP_MOUNT_VERSION);
+ vhdr->modify_date = hfsp_now2mt();
+ be32_add_cpu(&vhdr->write_count, 1);
+ vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_UNMNT);
+ vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_INCNSTNT);
+ hfsplus_sync_fs(sb, 1);
+
+ if (!sbi->hidden_dir) {
+ mutex_lock(&sbi->vh_mutex);
+ sbi->hidden_dir = hfsplus_new_inode(sb, S_IFDIR);
+ if (!sbi->hidden_dir) {
+ mutex_unlock(&sbi->vh_mutex);
+ err = -ENOMEM;
+ goto out_put_root;
+ }
+ err = hfsplus_create_cat(sbi->hidden_dir->i_ino, root,
+ &str, sbi->hidden_dir);
+ if (err) {
+ mutex_unlock(&sbi->vh_mutex);
+ goto out_put_hidden_dir;
+ }
- /* H+LX == hfsplusutils, H+Lx == this driver, H+lx is unused
- * all three are registered with Apple for our use
- */
- vhdr->last_mount_vers = cpu_to_be32(HFSP_MOUNT_VERSION);
- vhdr->modify_date = hfsp_now2mt();
- vhdr->write_count = cpu_to_be32(be32_to_cpu(vhdr->write_count) + 1);
- vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_UNMNT);
- vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_INCNSTNT);
- mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh);
- sync_dirty_buffer(HFSPLUS_SB(sb).s_vhbh);
-
- if (!HFSPLUS_SB(sb).hidden_dir) {
- printk(KERN_DEBUG "hfs: create hidden dir...\n");
- HFSPLUS_SB(sb).hidden_dir = hfsplus_new_inode(sb, S_IFDIR);
- hfsplus_create_cat(HFSPLUS_SB(sb).hidden_dir->i_ino, sb->s_root->d_inode,
- &str, HFSPLUS_SB(sb).hidden_dir);
- mark_inode_dirty(HFSPLUS_SB(sb).hidden_dir);
+ 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);
+ }
}
-out:
+
unload_nls(sbi->nls);
sbi->nls = nls;
return 0;
-cleanup:
- hfsplus_put_super(sb);
- if (nls)
- unload_nls(nls);
+out_put_hidden_dir:
+ iput(sbi->hidden_dir);
+out_put_root:
+ dput(sb->s_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:
+ hfs_btree_close(sbi->ext_tree);
+out_free_vhdr:
+ kfree(sbi->s_vhdr_buf);
+ kfree(sbi->s_backup_vhdr_buf);
+out_unload_nls:
+ unload_nls(sbi->nls);
+ unload_nls(nls);
+ kfree(sbi);
+out:
return err;
}
@@ -462,30 +619,36 @@ static struct inode *hfsplus_alloc_inode(struct super_block *sb)
return i ? &i->vfs_inode : NULL;
}
+static void hfsplus_i_callback(struct rcu_head *head)
+{
+ struct inode *inode = container_of(head, struct inode, i_rcu);
+
+ kmem_cache_free(hfsplus_inode_cachep, HFSPLUS_I(inode));
+}
+
static void hfsplus_destroy_inode(struct inode *inode)
{
- kmem_cache_free(hfsplus_inode_cachep, &HFSPLUS_I(inode));
+ call_rcu(&inode->i_rcu, hfsplus_i_callback);
}
#define HFSPLUS_INODE_SIZE sizeof(struct hfsplus_inode_info)
-static int hfsplus_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data,
- struct vfsmount *mnt)
+static struct dentry *hfsplus_mount(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, hfsplus_fill_super,
- mnt);
+ return mount_bdev(fs_type, flags, dev_name, data, hfsplus_fill_super);
}
static struct file_system_type hfsplus_fs_type = {
.owner = THIS_MODULE,
.name = "hfsplus",
- .get_sb = hfsplus_get_sb,
+ .mount = hfsplus_mount,
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("hfsplus");
-static void hfsplus_init_once(struct kmem_cache *cachep, void *p)
+static void hfsplus_init_once(void *p)
{
struct hfsplus_inode_info *i = p;
@@ -501,15 +664,33 @@ 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;
}
static void __exit exit_hfsplus_fs(void)
{
unregister_filesystem(&hfsplus_fs_type);
+
+ /*
+ * Make sure all delayed rcu free inodes are flushed before we
+ * 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 628ccf6fa40..e8ef121a4d8 100644
--- a/fs/hfsplus/unicode.c
+++ b/fs/hfsplus/unicode.c
@@ -17,14 +17,14 @@
/* Returns folded char, or 0 if ignorable */
static inline u16 case_fold(u16 c)
{
- u16 tmp;
-
- tmp = hfsplus_case_fold_table[c >> 8];
- if (tmp)
- tmp = hfsplus_case_fold_table[tmp + (c & 0xff)];
- else
- tmp = c;
- return tmp;
+ u16 tmp;
+
+ tmp = hfsplus_case_fold_table[c >> 8];
+ if (tmp)
+ tmp = hfsplus_case_fold_table[tmp + (c & 0xff)];
+ else
+ tmp = c;
+ return tmp;
}
/* Compare unicode strings, return values like normal strcmp */
@@ -118,10 +118,12 @@ static u16 *hfsplus_compose_lookup(u16 *p, u16 cc)
return NULL;
}
-int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr, char *astr, int *len_p)
+int hfsplus_uni2asc(struct super_block *sb,
+ const struct hfsplus_unistr *ustr,
+ char *astr, int *len_p)
{
const hfsplus_unichr *ip;
- struct nls_table *nls = HFSPLUS_SB(sb).nls;
+ struct nls_table *nls = HFSPLUS_SB(sb)->nls;
u8 *op;
u16 cc, c0, c1;
u16 *ce1, *ce2;
@@ -132,7 +134,7 @@ int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr, c
ustrlen = be16_to_cpu(ustr->length);
len = *len_p;
ce1 = NULL;
- compose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE);
+ compose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags);
while (ustrlen > 0) {
c0 = be16_to_cpu(*ip++);
@@ -140,7 +142,11 @@ int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr, c
/* search for single decomposed char */
if (likely(compose))
ce1 = hfsplus_compose_lookup(hfsplus_compose_table, c0);
- if (ce1 && (cc = ce1[0])) {
+ if (ce1)
+ cc = ce1[0];
+ else
+ cc = 0;
+ if (cc) {
/* start of a possibly decomposed Hangul char */
if (cc != 0xffff)
goto done;
@@ -171,7 +177,8 @@ int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr, c
goto same;
c1 = be16_to_cpu(*ip);
if (likely(compose))
- ce1 = hfsplus_compose_lookup(hfsplus_compose_table, c1);
+ ce1 = hfsplus_compose_lookup(
+ hfsplus_compose_table, c1);
if (ce1)
break;
switch (c0) {
@@ -199,19 +206,21 @@ int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr, c
if (ce2) {
i = 1;
while (i < ustrlen) {
- ce1 = hfsplus_compose_lookup(ce2, be16_to_cpu(ip[i]));
+ ce1 = hfsplus_compose_lookup(ce2,
+ be16_to_cpu(ip[i]));
if (!ce1)
break;
i++;
ce2 = ce1;
}
- if ((cc = ce2[0])) {
+ cc = ce2[0];
+ if (cc) {
ip += i;
ustrlen -= i;
goto done;
}
}
- same:
+same:
switch (c0) {
case 0:
cc = 0x2400;
@@ -222,7 +231,7 @@ int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr, c
default:
cc = c0;
}
- done:
+done:
res = nls->uni2char(cc, op, len);
if (res < 0) {
if (res == -ENAMETOOLONG)
@@ -246,7 +255,7 @@ out:
static inline int asc2unichar(struct super_block *sb, const char *astr, int len,
wchar_t *uc)
{
- int size = HFSPLUS_SB(sb).nls->char2uni(astr, len, uc);
+ int size = HFSPLUS_SB(sb)->nls->char2uni(astr, len, uc);
if (size <= 0) {
*uc = '?';
size = 1;
@@ -286,19 +295,24 @@ 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;
u16 *dstr, outlen = 0;
wchar_t c;
- decompose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE);
- while (outlen < HFSPLUS_MAX_STRLEN && len > 0) {
+ decompose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags);
+ while (outlen < max_unistr_len && len > 0) {
size = asc2unichar(sb, astr, len, &c);
- if (decompose && (dstr = decompose_unichar(c, &dsize))) {
- if (outlen + dsize > HFSPLUS_MAX_STRLEN)
+ if (decompose)
+ dstr = decompose_unichar(c, &dsize);
+ else
+ dstr = NULL;
+ if (dstr) {
+ if (outlen + dsize > max_unistr_len)
break;
do {
ustr->unicode[outlen++] = cpu_to_be16(*dstr++);
@@ -320,7 +334,7 @@ int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr,
* Composed unicode characters are decomposed and case-folding is performed
* if the appropriate bits are (un)set on the superblock.
*/
-int hfsplus_hash_dentry(struct dentry *dentry, struct qstr *str)
+int hfsplus_hash_dentry(const struct dentry *dentry, struct qstr *str)
{
struct super_block *sb = dentry->d_sb;
const char *astr;
@@ -330,8 +344,8 @@ int hfsplus_hash_dentry(struct dentry *dentry, struct qstr *str)
wchar_t c;
u16 c2;
- casefold = (HFSPLUS_SB(sb).flags & HFSPLUS_SB_CASEFOLD);
- decompose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE);
+ casefold = test_bit(HFSPLUS_SB_CASEFOLD, &HFSPLUS_SB(sb)->flags);
+ decompose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags);
hash = init_name_hash();
astr = str->name;
len = str->len;
@@ -341,15 +355,23 @@ int hfsplus_hash_dentry(struct dentry *dentry, struct qstr *str)
astr += size;
len -= size;
- if (decompose && (dstr = decompose_unichar(c, &dsize))) {
+ if (decompose)
+ dstr = decompose_unichar(c, &dsize);
+ else
+ dstr = NULL;
+ if (dstr) {
do {
c2 = *dstr++;
- if (!casefold || (c2 = case_fold(c2)))
+ if (casefold)
+ c2 = case_fold(c2);
+ if (!casefold || c2)
hash = partial_name_hash(c2, hash);
} while (--dsize > 0);
} else {
c2 = c;
- if (!casefold || (c2 = case_fold(c2)))
+ if (casefold)
+ c2 = case_fold(c2);
+ if (!casefold || c2)
hash = partial_name_hash(c2, hash);
}
}
@@ -363,9 +385,10 @@ int hfsplus_hash_dentry(struct dentry *dentry, struct qstr *str)
* Composed unicode characters are decomposed and case-folding is performed
* if the appropriate bits are (un)set on the superblock.
*/
-int hfsplus_compare_dentry(struct dentry *dentry, struct qstr *s1, struct qstr *s2)
+int hfsplus_compare_dentry(const struct dentry *parent, const struct dentry *dentry,
+ unsigned int len, const char *str, const struct qstr *name)
{
- struct super_block *sb = dentry->d_sb;
+ struct super_block *sb = parent->d_sb;
int casefold, decompose, size;
int dsize1, dsize2, len1, len2;
const u16 *dstr1, *dstr2;
@@ -373,12 +396,12 @@ int hfsplus_compare_dentry(struct dentry *dentry, struct qstr *s1, struct qstr *
u16 c1, c2;
wchar_t c;
- casefold = (HFSPLUS_SB(sb).flags & HFSPLUS_SB_CASEFOLD);
- decompose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE);
- astr1 = s1->name;
- len1 = s1->len;
- astr2 = s2->name;
- len2 = s2->len;
+ casefold = test_bit(HFSPLUS_SB_CASEFOLD, &HFSPLUS_SB(sb)->flags);
+ decompose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags);
+ astr1 = str;
+ len1 = len;
+ astr2 = name->name;
+ len2 = name->len;
dsize1 = dsize2 = 0;
dstr1 = dstr2 = NULL;
@@ -388,7 +411,9 @@ int hfsplus_compare_dentry(struct dentry *dentry, struct qstr *s1, struct qstr *
astr1 += size;
len1 -= size;
- if (!decompose || !(dstr1 = decompose_unichar(c, &dsize1))) {
+ if (decompose)
+ dstr1 = decompose_unichar(c, &dsize1);
+ if (!decompose || !dstr1) {
c1 = c;
dstr1 = &c1;
dsize1 = 1;
@@ -400,7 +425,9 @@ int hfsplus_compare_dentry(struct dentry *dentry, struct qstr *s1, struct qstr *
astr2 += size;
len2 -= size;
- if (!decompose || !(dstr2 = decompose_unichar(c, &dsize2))) {
+ if (decompose)
+ dstr2 = decompose_unichar(c, &dsize2);
+ if (!decompose || !dstr2) {
c2 = c;
dstr2 = &c2;
dsize2 = 1;
@@ -410,12 +437,14 @@ int hfsplus_compare_dentry(struct dentry *dentry, struct qstr *s1, struct qstr *
c1 = *dstr1;
c2 = *dstr2;
if (casefold) {
- if (!(c1 = case_fold(c1))) {
+ c1 = case_fold(c1);
+ if (!c1) {
dstr1++;
dsize1--;
continue;
}
- if (!(c2 = case_fold(c2))) {
+ c2 = case_fold(c2);
+ if (!c2) {
dstr2++;
dsize2--;
continue;
diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index 72cab78f050..cc623567143 100644
--- a/fs/hfsplus/wrapper.c
+++ b/fs/hfsplus/wrapper.c
@@ -24,6 +24,71 @@ struct hfsplus_wd {
u16 embed_count;
};
+/**
+ * hfsplus_submit_bio - Perform block I/O
+ * @sb: super block of volume for I/O
+ * @sector: block to read or write, for blocks of HFSPLUS_SECTOR_SIZE bytes
+ * @buf: buffer for I/O
+ * @data: output pointer for location of requested data
+ * @rw: direction of I/O
+ *
+ * The unit of I/O is hfsplus_min_io_size(sb), which may be bigger than
+ * HFSPLUS_SECTOR_SIZE, and @buf must be sized accordingly. On reads
+ * @data will return a pointer to the start of the requested sector,
+ * which may not be the same location as @buf.
+ *
+ * If @sector is not aligned to the bdev logical block size it will
+ * be rounded down. For writes this means that @buf should contain data
+ * that starts at the rounded-down address. As long as the data was
+ * read using hfsplus_submit_bio() and the same buffer is used things
+ * will work correctly.
+ */
+int hfsplus_submit_bio(struct super_block *sb, sector_t sector,
+ void *buf, void **data, int rw)
+{
+ struct bio *bio;
+ int ret = 0;
+ u64 io_size;
+ loff_t start;
+ int offset;
+
+ /*
+ * Align sector to hardware sector size and find offset. We
+ * assume that io_size is a power of two, which _should_
+ * be true.
+ */
+ io_size = hfsplus_min_io_size(sb);
+ start = (loff_t)sector << HFSPLUS_SECTOR_SHIFT;
+ offset = start & (io_size - 1);
+ sector &= ~((io_size >> HFSPLUS_SECTOR_SHIFT) - 1);
+
+ bio = bio_alloc(GFP_NOIO, 1);
+ bio->bi_iter.bi_sector = sector;
+ bio->bi_bdev = sb->s_bdev;
+
+ if (!(rw & WRITE) && data)
+ *data = (u8 *)buf + offset;
+
+ while (io_size > 0) {
+ unsigned int page_offset = offset_in_page(buf);
+ unsigned int len = min_t(unsigned int, PAGE_SIZE - page_offset,
+ io_size);
+
+ ret = bio_add_page(bio, virt_to_page(buf), len, page_offset);
+ if (ret != len) {
+ ret = -EIO;
+ goto out;
+ }
+ io_size -= len;
+ buf = (u8 *)buf + len;
+ }
+
+ ret = submit_bio_wait(rw, bio);
+out:
+ bio_put(bio);
+ return ret < 0 ? ret : 0;
+}
+
static int hfsplus_read_mdb(void *bufptr, struct hfsplus_wd *wd)
{
u32 extent;
@@ -40,14 +105,16 @@ static int hfsplus_read_mdb(void *bufptr, struct hfsplus_wd *wd)
!(attrib & HFSP_WRAP_ATTRIB_SPARED))
return 0;
- wd->ablk_size = be32_to_cpu(*(__be32 *)(bufptr + HFSP_WRAPOFF_ABLKSIZE));
+ wd->ablk_size =
+ be32_to_cpu(*(__be32 *)(bufptr + HFSP_WRAPOFF_ABLKSIZE));
if (wd->ablk_size < HFSPLUS_SECTOR_SIZE)
return 0;
if (wd->ablk_size % HFSPLUS_SECTOR_SIZE)
return 0;
- wd->ablk_start = be16_to_cpu(*(__be16 *)(bufptr + HFSP_WRAPOFF_ABLKSTART));
+ wd->ablk_start =
+ be16_to_cpu(*(__be16 *)(bufptr + HFSP_WRAPOFF_ABLKSTART));
- extent = be32_to_cpu(get_unaligned((__be32 *)(bufptr + HFSP_WRAPOFF_EMBEDEXT)));
+ extent = get_unaligned_be32(bufptr + HFSP_WRAPOFF_EMBEDEXT);
wd->embed_start = (extent >> 16) & 0xFFFF;
wd->embed_count = extent & 0xFFFF;
@@ -65,19 +132,21 @@ static int hfsplus_get_last_session(struct super_block *sb,
*start = 0;
*size = sb->s_bdev->bd_inode->i_size >> 9;
- if (HFSPLUS_SB(sb).session >= 0) {
- te.cdte_track = HFSPLUS_SB(sb).session;
+ if (HFSPLUS_SB(sb)->session >= 0) {
+ te.cdte_track = HFSPLUS_SB(sb)->session;
te.cdte_format = CDROM_LBA;
- res = ioctl_by_bdev(sb->s_bdev, CDROMREADTOCENTRY, (unsigned long)&te);
+ res = ioctl_by_bdev(sb->s_bdev,
+ CDROMREADTOCENTRY, (unsigned long)&te);
if (!res && (te.cdte_ctrl & CDROM_DATA_TRACK) == 4) {
*start = (sector_t)te.cdte_addr.lba << 2;
return 0;
}
- printk(KERN_ERR "hfs: invalid session number or type of track\n");
+ pr_err("invalid session number or type of track\n");
return -EINVAL;
}
ms_info.addr_format = CDROM_LBA;
- res = ioctl_by_bdev(sb->s_bdev, CDROMMULTISESSION, (unsigned long)&ms_info);
+ res = ioctl_by_bdev(sb->s_bdev, CDROMMULTISESSION,
+ (unsigned long)&ms_info);
if (!res && ms_info.xa_flag)
*start = (sector_t)ms_info.addr.lba << 2;
return 0;
@@ -87,93 +156,106 @@ static int hfsplus_get_last_session(struct super_block *sb,
/* Takes in super block, returns true if good data read */
int hfsplus_read_wrapper(struct super_block *sb)
{
- struct buffer_head *bh;
- struct hfsplus_vh *vhdr;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct hfsplus_wd wd;
sector_t part_start, part_size;
u32 blocksize;
+ int error = 0;
+ error = -EINVAL;
blocksize = sb_min_blocksize(sb, HFSPLUS_SECTOR_SIZE);
if (!blocksize)
- return -EINVAL;
+ goto out;
if (hfsplus_get_last_session(sb, &part_start, &part_size))
- return -EINVAL;
- while (1) {
- bh = sb_bread512(sb, part_start + HFSPLUS_VOLHEAD_SECTOR, vhdr);
- if (!bh)
- return -EIO;
-
- if (vhdr->signature == cpu_to_be16(HFSP_WRAP_MAGIC)) {
- if (!hfsplus_read_mdb(vhdr, &wd))
- goto error;
- wd.ablk_size >>= HFSPLUS_SECTOR_SHIFT;
- part_start += wd.ablk_start + wd.embed_start * wd.ablk_size;
- part_size = wd.embed_count * wd.ablk_size;
- brelse(bh);
- bh = sb_bread512(sb, part_start + HFSPLUS_VOLHEAD_SECTOR, vhdr);
- if (!bh)
- return -EIO;
- }
- if (vhdr->signature == cpu_to_be16(HFSPLUS_VOLHEAD_SIG))
- break;
- if (vhdr->signature == cpu_to_be16(HFSPLUS_VOLHEAD_SIGX)) {
- HFSPLUS_SB(sb).flags |= HFSPLUS_SB_HFSX;
- break;
- }
- brelse(bh);
+ goto out;
+
+ error = -ENOMEM;
+ sbi->s_vhdr_buf = kmalloc(hfsplus_min_io_size(sb), GFP_KERNEL);
+ if (!sbi->s_vhdr_buf)
+ goto out;
+ sbi->s_backup_vhdr_buf = kmalloc(hfsplus_min_io_size(sb), GFP_KERNEL);
+ if (!sbi->s_backup_vhdr_buf)
+ goto out_free_vhdr;
- /* check for a partition block
+reread:
+ error = hfsplus_submit_bio(sb, part_start + HFSPLUS_VOLHEAD_SECTOR,
+ sbi->s_vhdr_buf, (void **)&sbi->s_vhdr,
+ READ);
+ if (error)
+ goto out_free_backup_vhdr;
+
+ error = -EINVAL;
+ switch (sbi->s_vhdr->signature) {
+ case cpu_to_be16(HFSPLUS_VOLHEAD_SIGX):
+ set_bit(HFSPLUS_SB_HFSX, &sbi->flags);
+ /*FALLTHRU*/
+ case cpu_to_be16(HFSPLUS_VOLHEAD_SIG):
+ break;
+ case cpu_to_be16(HFSP_WRAP_MAGIC):
+ if (!hfsplus_read_mdb(sbi->s_vhdr, &wd))
+ goto out_free_backup_vhdr;
+ wd.ablk_size >>= HFSPLUS_SECTOR_SHIFT;
+ part_start += (sector_t)wd.ablk_start +
+ (sector_t)wd.embed_start * wd.ablk_size;
+ part_size = (sector_t)wd.embed_count * wd.ablk_size;
+ goto reread;
+ default:
+ /*
+ * Check for a partition block.
+ *
* (should do this only for cdrom/loop though)
*/
if (hfs_part_find(sb, &part_start, &part_size))
- return -EINVAL;
+ goto out_free_backup_vhdr;
+ goto reread;
+ }
+
+ error = hfsplus_submit_bio(sb, part_start + part_size - 2,
+ sbi->s_backup_vhdr_buf,
+ (void **)&sbi->s_backup_vhdr, READ);
+ if (error)
+ goto out_free_backup_vhdr;
+
+ error = -EINVAL;
+ if (sbi->s_backup_vhdr->signature != sbi->s_vhdr->signature) {
+ pr_warn("invalid secondary volume header\n");
+ goto out_free_backup_vhdr;
}
- blocksize = be32_to_cpu(vhdr->blocksize);
- brelse(bh);
+ blocksize = be32_to_cpu(sbi->s_vhdr->blocksize);
- /* block size must be at least as large as a sector
- * and a multiple of 2
+ /*
+ * Block size must be at least as large as a sector and a multiple of 2.
*/
- if (blocksize < HFSPLUS_SECTOR_SIZE ||
- ((blocksize - 1) & blocksize))
- return -EINVAL;
- HFSPLUS_SB(sb).alloc_blksz = blocksize;
- HFSPLUS_SB(sb).alloc_blksz_shift = 0;
- while ((blocksize >>= 1) != 0)
- HFSPLUS_SB(sb).alloc_blksz_shift++;
- blocksize = min(HFSPLUS_SB(sb).alloc_blksz, (u32)PAGE_SIZE);
+ if (blocksize < HFSPLUS_SECTOR_SIZE || ((blocksize - 1) & blocksize))
+ goto out_free_backup_vhdr;
+ sbi->alloc_blksz = blocksize;
+ sbi->alloc_blksz_shift = ilog2(blocksize);
+ blocksize = min_t(u32, sbi->alloc_blksz, PAGE_SIZE);
- /* align block size to block offset */
+ /*
+ * Align block size to block offset.
+ */
while (part_start & ((blocksize >> HFSPLUS_SECTOR_SHIFT) - 1))
blocksize >>= 1;
if (sb_set_blocksize(sb, blocksize) != blocksize) {
- printk(KERN_ERR "hfs: unable to set blocksize to %u!\n", blocksize);
- return -EINVAL;
+ pr_err("unable to set blocksize to %u!\n", blocksize);
+ goto out_free_backup_vhdr;
}
- HFSPLUS_SB(sb).blockoffset = part_start >>
- (sb->s_blocksize_bits - HFSPLUS_SECTOR_SHIFT);
- HFSPLUS_SB(sb).sect_count = part_size;
- HFSPLUS_SB(sb).fs_shift = HFSPLUS_SB(sb).alloc_blksz_shift -
- sb->s_blocksize_bits;
-
- bh = sb_bread512(sb, part_start + HFSPLUS_VOLHEAD_SECTOR, vhdr);
- if (!bh)
- return -EIO;
-
- /* should still be the same... */
- if (vhdr->signature != (HFSPLUS_SB(sb).flags & HFSPLUS_SB_HFSX ?
- cpu_to_be16(HFSPLUS_VOLHEAD_SIGX) :
- cpu_to_be16(HFSPLUS_VOLHEAD_SIG)))
- goto error;
- HFSPLUS_SB(sb).s_vhbh = bh;
- HFSPLUS_SB(sb).s_vhdr = vhdr;
-
+ sbi->blockoffset =
+ part_start >> (sb->s_blocksize_bits - HFSPLUS_SECTOR_SHIFT);
+ sbi->part_start = part_start;
+ sbi->sect_count = part_size;
+ sbi->fs_shift = sbi->alloc_blksz_shift - sb->s_blocksize_bits;
return 0;
- error:
- brelse(bh);
- return -EINVAL;
+
+out_free_backup_vhdr:
+ kfree(sbi->s_backup_vhdr_buf);
+out_free_vhdr:
+ kfree(sbi->s_vhdr_buf);
+out:
+ return error;
}
diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c
new file mode 100644
index 00000000000..d98094a9f47
--- /dev/null
+++ b/fs/hfsplus/xattr.c
@@ -0,0 +1,875 @@
+/*
+ * linux/fs/hfsplus/xattr.c
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Logic of processing extended attributes
+ */
+
+#include "hfsplus_fs.h"
+#include <linux/posix_acl_xattr.h>
+#include <linux/nls.h>
+#include "xattr.h"
+#include "acl.h"
+
+static int hfsplus_removexattr(struct inode *inode, const char *name);
+
+const struct xattr_handler *hfsplus_xattr_handlers[] = {
+ &hfsplus_xattr_osx_handler,
+ &hfsplus_xattr_user_handler,
+ &hfsplus_xattr_trusted_handler,
+#ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
+ &posix_acl_access_xattr_handler,
+ &posix_acl_default_xattr_handler,
+#endif
+ &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 void hfsplus_init_header_node(struct inode *attr_file,
+ u32 clump_size,
+ char *buf, u16 node_size)
+{
+ struct hfs_bnode_desc *desc;
+ struct hfs_btree_header_rec *head;
+ u16 offset;
+ __be16 *rec_offsets;
+ u32 hdr_node_map_rec_bits;
+ char *bmp;
+ u32 used_nodes;
+ u32 used_bmp_bytes;
+ u64 tmp;
+
+ hfs_dbg(ATTR_MOD, "init_hdr_attr_file: clump %u, node_size %u\n",
+ clump_size, node_size);
+
+ /* The end of the node contains list of record offsets */
+ rec_offsets = (__be16 *)(buf + node_size);
+
+ desc = (struct hfs_bnode_desc *)buf;
+ desc->type = HFS_NODE_HEADER;
+ desc->num_recs = cpu_to_be16(HFSPLUS_BTREE_HDR_NODE_RECS_COUNT);
+ offset = sizeof(struct hfs_bnode_desc);
+ *--rec_offsets = cpu_to_be16(offset);
+
+ head = (struct hfs_btree_header_rec *)(buf + offset);
+ head->node_size = cpu_to_be16(node_size);
+ tmp = i_size_read(attr_file);
+ do_div(tmp, node_size);
+ head->node_count = cpu_to_be32(tmp);
+ head->free_nodes = cpu_to_be32(be32_to_cpu(head->node_count) - 1);
+ head->clump_size = cpu_to_be32(clump_size);
+ head->attributes |= cpu_to_be32(HFS_TREE_BIGKEYS | HFS_TREE_VARIDXKEYS);
+ head->max_key_len = cpu_to_be16(HFSPLUS_ATTR_KEYLEN - sizeof(u16));
+ offset += sizeof(struct hfs_btree_header_rec);
+ *--rec_offsets = cpu_to_be16(offset);
+ offset += HFSPLUS_BTREE_HDR_USER_BYTES;
+ *--rec_offsets = cpu_to_be16(offset);
+
+ hdr_node_map_rec_bits = 8 * (node_size - offset - (4 * sizeof(u16)));
+ if (be32_to_cpu(head->node_count) > hdr_node_map_rec_bits) {
+ u32 map_node_bits;
+ u32 map_nodes;
+
+ desc->next = cpu_to_be32(be32_to_cpu(head->leaf_tail) + 1);
+ map_node_bits = 8 * (node_size - sizeof(struct hfs_bnode_desc) -
+ (2 * sizeof(u16)) - 2);
+ map_nodes = (be32_to_cpu(head->node_count) -
+ hdr_node_map_rec_bits +
+ (map_node_bits - 1)) / map_node_bits;
+ be32_add_cpu(&head->free_nodes, 0 - map_nodes);
+ }
+
+ bmp = buf + offset;
+ used_nodes =
+ be32_to_cpu(head->node_count) - be32_to_cpu(head->free_nodes);
+ used_bmp_bytes = used_nodes / 8;
+ if (used_bmp_bytes) {
+ memset(bmp, 0xFF, used_bmp_bytes);
+ bmp += used_bmp_bytes;
+ used_nodes %= 8;
+ }
+ *bmp = ~(0xFF >> used_nodes);
+ offset += hdr_node_map_rec_bits / 8;
+ *--rec_offsets = cpu_to_be16(offset);
+}
+
+static int hfsplus_create_attributes_file(struct super_block *sb)
+{
+ int err = 0;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+ struct inode *attr_file;
+ struct hfsplus_inode_info *hip;
+ u32 clump_size;
+ u16 node_size = HFSPLUS_ATTR_TREE_NODE_SIZE;
+ char *buf;
+ int index, written;
+ struct address_space *mapping;
+ struct page *page;
+ int old_state = HFSPLUS_EMPTY_ATTR_TREE;
+
+ hfs_dbg(ATTR_MOD, "create_attr_file: ino %d\n", HFSPLUS_ATTR_CNID);
+
+check_attr_tree_state_again:
+ switch (atomic_read(&sbi->attr_tree_state)) {
+ case HFSPLUS_EMPTY_ATTR_TREE:
+ if (old_state != atomic_cmpxchg(&sbi->attr_tree_state,
+ old_state,
+ HFSPLUS_CREATING_ATTR_TREE))
+ goto check_attr_tree_state_again;
+ break;
+ case HFSPLUS_CREATING_ATTR_TREE:
+ /*
+ * This state means that another thread is in process
+ * of AttributesFile creation. Theoretically, it is
+ * possible to be here. But really __setxattr() method
+ * first of all calls hfs_find_init() for lookup in
+ * B-tree of CatalogFile. This method locks mutex of
+ * CatalogFile's B-tree. As a result, if some thread
+ * is inside AttributedFile creation operation then
+ * another threads will be waiting unlocking of
+ * CatalogFile's B-tree's mutex. However, if code will
+ * change then we will return error code (-EAGAIN) from
+ * here. Really, it means that first try to set of xattr
+ * fails with error but second attempt will have success.
+ */
+ return -EAGAIN;
+ case HFSPLUS_VALID_ATTR_TREE:
+ return 0;
+ case HFSPLUS_FAILED_ATTR_TREE:
+ return -EOPNOTSUPP;
+ default:
+ BUG();
+ }
+
+ attr_file = hfsplus_iget(sb, HFSPLUS_ATTR_CNID);
+ if (IS_ERR(attr_file)) {
+ pr_err("failed to load attributes file\n");
+ return PTR_ERR(attr_file);
+ }
+
+ BUG_ON(i_size_read(attr_file) != 0);
+
+ hip = HFSPLUS_I(attr_file);
+
+ clump_size = hfsplus_calc_btree_clump_size(sb->s_blocksize,
+ node_size,
+ sbi->sect_count,
+ HFSPLUS_ATTR_CNID);
+
+ mutex_lock(&hip->extents_lock);
+ hip->clump_blocks = clump_size >> sbi->alloc_blksz_shift;
+ mutex_unlock(&hip->extents_lock);
+
+ if (sbi->free_blocks <= (hip->clump_blocks << 1)) {
+ err = -ENOSPC;
+ goto end_attr_file_creation;
+ }
+
+ while (hip->alloc_blocks < hip->clump_blocks) {
+ err = hfsplus_file_extend(attr_file, false);
+ if (unlikely(err)) {
+ pr_err("failed to extend attributes file\n");
+ goto end_attr_file_creation;
+ }
+ hip->phys_size = attr_file->i_size =
+ (loff_t)hip->alloc_blocks << sbi->alloc_blksz_shift;
+ hip->fs_blocks = hip->alloc_blocks << sbi->fs_shift;
+ inode_set_bytes(attr_file, attr_file->i_size);
+ }
+
+ buf = kzalloc(node_size, GFP_NOFS);
+ if (!buf) {
+ pr_err("failed to allocate memory for header node\n");
+ err = -ENOMEM;
+ goto end_attr_file_creation;
+ }
+
+ hfsplus_init_header_node(attr_file, clump_size, buf, node_size);
+
+ mapping = attr_file->i_mapping;
+
+ index = 0;
+ written = 0;
+ for (; written < node_size; index++, written += PAGE_CACHE_SIZE) {
+ void *kaddr;
+
+ page = read_mapping_page(mapping, index, NULL);
+ if (IS_ERR(page)) {
+ err = PTR_ERR(page);
+ goto failed_header_node_init;
+ }
+
+ kaddr = kmap_atomic(page);
+ memcpy(kaddr, buf + written,
+ min_t(size_t, PAGE_CACHE_SIZE, node_size - written));
+ kunmap_atomic(kaddr);
+
+ set_page_dirty(page);
+ page_cache_release(page);
+ }
+
+ hfsplus_mark_inode_dirty(attr_file, HFSPLUS_I_ATTR_DIRTY);
+
+ sbi->attr_tree = hfs_btree_open(sb, HFSPLUS_ATTR_CNID);
+ if (!sbi->attr_tree)
+ pr_err("failed to load attributes file\n");
+
+failed_header_node_init:
+ kfree(buf);
+
+end_attr_file_creation:
+ iput(attr_file);
+
+ if (!err)
+ atomic_set(&sbi->attr_tree_state, HFSPLUS_VALID_ATTR_TREE);
+ else if (err == -ENOSPC)
+ atomic_set(&sbi->attr_tree_state, HFSPLUS_EMPTY_ATTR_TREE);
+ else
+ atomic_set(&sbi->attr_tree_state, HFSPLUS_FAILED_ATTR_TREE);
+
+ return err;
+}
+
+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;
+
+ if (value == NULL)
+ return hfsplus_removexattr(inode, name);
+
+ err = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &cat_fd);
+ if (err) {
+ pr_err("can't init xattr find struct\n");
+ return err;
+ }
+
+ err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &cat_fd);
+ if (err) {
+ pr_err("catalog searching failed\n");
+ goto end_setxattr;
+ }
+
+ if (!strcmp_xattr_finder_info(name)) {
+ if (flags & XATTR_CREATE) {
+ pr_err("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 = hfsplus_create_attributes_file(inode->i_sb);
+ if (unlikely(err))
+ goto end_setxattr;
+ }
+
+ if (hfsplus_attr_exists(inode, name)) {
+ if (flags & XATTR_CREATE) {
+ pr_err("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) {
+ pr_err("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 {
+ pr_err("invalid catalog entry type\n");
+ err = -EIO;
+ goto end_setxattr;
+ }
+
+end_setxattr:
+ hfs_find_exit(&cat_fd);
+ return err;
+}
+
+static int name_len(const char *xattr_name, int xattr_name_len)
+{
+ int len = xattr_name_len + 1;
+
+ if (!is_known_namespace(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_known_namespace(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 inode *inode,
+ void *value, size_t size)
+{
+ ssize_t res = 0;
+ 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) {
+ pr_err("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 inode *inode, const char *name,
+ void *value, size_t size)
+{
+ 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 (!strcmp_xattr_finder_info(name))
+ return hfsplus_getxattr_finder_info(inode, value, size);
+
+ if (!HFSPLUS_SB(inode->i_sb)->attr_tree)
+ return -EOPNOTSUPP;
+
+ entry = hfsplus_alloc_attr_entry();
+ if (!entry) {
+ pr_err("can't allocate xattr entry\n");
+ return -ENOMEM;
+ }
+
+ res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->attr_tree, &fd);
+ if (res) {
+ pr_err("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
+ pr_err("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) {
+ pr_err("invalid xattr record size\n");
+ res = -EIO;
+ goto out;
+ }
+ } else if (record_type == HFSPLUS_ATTR_FORK_DATA ||
+ record_type == HFSPLUS_ATTR_EXTENTS) {
+ pr_err("only inline data xattr are supported\n");
+ res = -EOPNOTSUPP;
+ goto out;
+ } else {
+ pr_err("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) {
+ pr_err("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;
+ 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) {
+ pr_err("can't init xattr find struct\n");
+ return err;
+ }
+
+ strbuf = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN +
+ XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL);
+ if (!strbuf) {
+ res = -ENOMEM;
+ goto out;
+ }
+
+ 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) {
+ pr_err("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 = NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN;
+ if (hfsplus_uni2asc(inode->i_sb,
+ (const struct hfsplus_unistr *)&fd.key->attr.key_name,
+ strbuf, &xattr_name_len)) {
+ pr_err("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:
+ kfree(strbuf);
+out:
+ hfs_find_exit(&fd);
+ return res;
+}
+
+static int hfsplus_removexattr(struct inode *inode, const char *name)
+{
+ int err = 0;
+ 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 (!HFSPLUS_SB(inode->i_sb)->attr_tree)
+ return -EOPNOTSUPP;
+
+ if (!strcmp_xattr_finder_info(name))
+ return -EOPNOTSUPP;
+
+ err = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &cat_fd);
+ if (err) {
+ pr_err("can't init xattr find struct\n");
+ return err;
+ }
+
+ err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &cat_fd);
+ if (err) {
+ pr_err("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 {
+ pr_err("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;
+ int res;
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ /*
+ * Don't allow retrieving properly prefixed attributes
+ * by prepending them with "osx."
+ */
+ if (is_known_namespace(name))
+ return -EOPNOTSUPP;
+ xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN
+ + XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL);
+ if (!xattr_name)
+ return -ENOMEM;
+ strcpy(xattr_name, XATTR_MAC_OSX_PREFIX);
+ strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name);
+
+ res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
+ kfree(xattr_name);
+ return res;
+}
+
+static int hfsplus_osx_setxattr(struct dentry *dentry, const char *name,
+ const void *buffer, size_t size, int flags, int type)
+{
+ char *xattr_name;
+ int res;
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ /*
+ * Don't allow setting properly prefixed attributes
+ * by prepending them with "osx."
+ */
+ if (is_known_namespace(name))
+ return -EOPNOTSUPP;
+ xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN
+ + XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL);
+ if (!xattr_name)
+ return -ENOMEM;
+ strcpy(xattr_name, XATTR_MAC_OSX_PREFIX);
+ strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name);
+
+ res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
+ kfree(xattr_name);
+ return res;
+}
+
+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..288530cf80b
--- /dev/null
+++ b/fs/hfsplus/xattr.h
@@ -0,0 +1,49 @@
+/*
+ * 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_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 inode *inode, const char *name,
+ void *value, size_t size);
+
+static inline ssize_t hfsplus_getxattr(struct dentry *dentry,
+ const char *name,
+ void *value,
+ size_t size)
+{
+ return __hfsplus_getxattr(dentry->d_inode, name, value, size);
+}
+
+ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size);
+
+int hfsplus_init_security(struct inode *inode, struct inode *dir,
+ const struct qstr *qstr);
+
+int hfsplus_init_inode_security(struct inode *inode, struct inode *dir,
+ const struct qstr *qstr);
+
+#endif
diff --git a/fs/hfsplus/xattr_security.c b/fs/hfsplus/xattr_security.c
new file mode 100644
index 00000000000..6ec5e107691
--- /dev/null
+++ b/fs/hfsplus/xattr_security.c
@@ -0,0 +1,124 @@
+/*
+ * linux/fs/hfsplus/xattr_trusted.c
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Handler for storing security labels as extended attributes.
+ */
+
+#include <linux/security.h>
+#include <linux/nls.h>
+
+#include "hfsplus_fs.h"
+#include "xattr.h"
+#include "acl.h"
+
+static int hfsplus_security_getxattr(struct dentry *dentry, const char *name,
+ void *buffer, size_t size, int type)
+{
+ char *xattr_name;
+ int res;
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
+ GFP_KERNEL);
+ if (!xattr_name)
+ return -ENOMEM;
+ strcpy(xattr_name, XATTR_SECURITY_PREFIX);
+ strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name);
+
+ res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
+ kfree(xattr_name);
+ return res;
+}
+
+static int hfsplus_security_setxattr(struct dentry *dentry, const char *name,
+ const void *buffer, size_t size, int flags, int type)
+{
+ char *xattr_name;
+ int res;
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
+ GFP_KERNEL);
+ if (!xattr_name)
+ return -ENOMEM;
+ strcpy(xattr_name, XATTR_SECURITY_PREFIX);
+ strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name);
+
+ res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
+ kfree(xattr_name);
+ return res;
+}
+
+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;
+ int err = 0;
+
+ xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
+ GFP_KERNEL);
+ if (!xattr_name)
+ return -ENOMEM;
+ for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+
+ if (!strcmp(xattr->name, ""))
+ continue;
+
+ strcpy(xattr_name, XATTR_SECURITY_PREFIX);
+ strcpy(xattr_name +
+ XATTR_SECURITY_PREFIX_LEN, xattr->name);
+ memset(xattr_name +
+ XATTR_SECURITY_PREFIX_LEN + strlen(xattr->name), 0, 1);
+
+ err = __hfsplus_setxattr(inode, xattr_name,
+ xattr->value, xattr->value_len, 0);
+ if (err)
+ break;
+ }
+ kfree(xattr_name);
+ 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);
+}
+
+int hfsplus_init_inode_security(struct inode *inode,
+ struct inode *dir,
+ const struct qstr *qstr)
+{
+ int err;
+
+ err = hfsplus_init_posix_acl(inode, dir);
+ if (!err)
+ err = hfsplus_init_security(inode, dir, qstr);
+ return err;
+}
+
+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..3c5f27e4746
--- /dev/null
+++ b/fs/hfsplus/xattr_trusted.c
@@ -0,0 +1,71 @@
+/*
+ * linux/fs/hfsplus/xattr_trusted.c
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Handler for trusted extended attributes.
+ */
+
+#include <linux/nls.h>
+
+#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;
+ int res;
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
+ GFP_KERNEL);
+ if (!xattr_name)
+ return -ENOMEM;
+ strcpy(xattr_name, XATTR_TRUSTED_PREFIX);
+ strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name);
+
+ res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
+ kfree(xattr_name);
+ return res;
+}
+
+static int hfsplus_trusted_setxattr(struct dentry *dentry, const char *name,
+ const void *buffer, size_t size, int flags, int type)
+{
+ char *xattr_name;
+ int res;
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
+ GFP_KERNEL);
+ if (!xattr_name)
+ return -ENOMEM;
+ strcpy(xattr_name, XATTR_TRUSTED_PREFIX);
+ strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name);
+
+ res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
+ kfree(xattr_name);
+ return res;
+}
+
+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..2b625a538b6
--- /dev/null
+++ b/fs/hfsplus/xattr_user.c
@@ -0,0 +1,71 @@
+/*
+ * linux/fs/hfsplus/xattr_user.c
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Handler for user extended attributes.
+ */
+
+#include <linux/nls.h>
+
+#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;
+ int res;
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
+ GFP_KERNEL);
+ if (!xattr_name)
+ return -ENOMEM;
+ strcpy(xattr_name, XATTR_USER_PREFIX);
+ strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name);
+
+ res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
+ kfree(xattr_name);
+ return res;
+}
+
+static int hfsplus_user_setxattr(struct dentry *dentry, const char *name,
+ const void *buffer, size_t size, int flags, int type)
+{
+ char *xattr_name;
+ int res;
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
+ GFP_KERNEL);
+ if (!xattr_name)
+ return -ENOMEM;
+ strcpy(xattr_name, XATTR_USER_PREFIX);
+ strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name);
+
+ res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
+ kfree(xattr_name);
+ return res;
+}
+
+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 v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 22:21:21 +0000