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| author | Vyacheslav Dubeyko <slava@dubeyko.com> | 2013-11-12 15:11:09 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-13 12:09:32 +0900 |
| commit | 95e0d7dbb9b28ab0dfad7c7316066b05e1f1d4cd (patch) | |
| tree | 09f42df8169a4fbf3e2f60cb1b36c1e83c8d9019 /fs/hfsplus/hfsplus_fs.h | |
| parent | 099e9245e04d50bb12ed621b4fa61df0a4c9dba9 (diff) | |
| download | lwn-95e0d7dbb9b28ab0dfad7c7316066b05e1f1d4cd.tar.gz lwn-95e0d7dbb9b28ab0dfad7c7316066b05e1f1d4cd.zip | |
hfsplus: implement attributes file creation functionality
Implement functionality of creation AttributesFile metadata file on HFS+
volume in the case of absence of it.
It makes trying to open AttributesFile's B-tree during mount of HFS+
volume. If HFS+ volume hasn't AttributesFile then a pointer on
AttributesFile's B-tree keeps as NULL. Thereby, when it is discovered
absence of AttributesFile on HFS+ volume in the begin of xattr creation
operation then AttributesFile will be created.
The creation of AttributesFile will have success in the case of
availability (2 * clump) free blocks on HFS+ volume. Otherwise,
creation operation is ended with error (-ENOSPC).
Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@infradead.org>
Acked-by: Hin-Tak Leung <htl10@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/hfsplus/hfsplus_fs.h')
| -rw-r--r-- | fs/hfsplus/hfsplus_fs.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h index 1e36f18e904b..08846425b67f 100644 --- a/fs/hfsplus/hfsplus_fs.h +++ b/fs/hfsplus/hfsplus_fs.h @@ -127,6 +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) */ @@ -141,6 +149,7 @@ struct hfsplus_sb_info { 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; |