diff options
Diffstat (limited to 'fs/ext4/xattr.h')
| -rw-r--r-- | fs/ext4/xattr.h | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h index 099c8b670ef5..6e10ff9393d4 100644 --- a/fs/ext4/xattr.h +++ b/fs/ext4/xattr.h @@ -44,7 +44,7 @@ struct ext4_xattr_entry { __u8 e_name_len; /* length of name */ __u8 e_name_index; /* attribute name index */ __le16 e_value_offs; /* offset in disk block of value */ - __le32 e_value_block; /* disk block attribute is stored on (n/i) */ + __le32 e_value_inum; /* inode in which the value is stored */ __le32 e_value_size; /* size of attribute value */ __le32 e_hash; /* hash value of name and value */ char e_name[0]; /* attribute name */ @@ -69,6 +69,26 @@ struct ext4_xattr_entry { EXT4_I(inode)->i_extra_isize)) #define IFIRST(hdr) ((struct ext4_xattr_entry *)((hdr)+1)) +/* + * Link EA inode back to parent one using i_mtime field. + * Extra integer type conversion added to ignore higher + * bits in i_mtime.tv_sec which might be set by ext4_get() + */ +#define EXT4_XATTR_INODE_SET_PARENT(inode, inum) \ +do { \ + (inode)->i_mtime.tv_sec = inum; \ +} while(0) + +#define EXT4_XATTR_INODE_GET_PARENT(inode) \ +((__u32)(inode)->i_mtime.tv_sec) + +/* + * The minimum size of EA value when you start storing it in an external inode + * size of block - size of header - size of 1 entry - 4 null bytes +*/ +#define EXT4_XATTR_MIN_LARGE_EA_SIZE(b) \ + ((b) - EXT4_XATTR_LEN(3) - sizeof(struct ext4_xattr_header) - 4) + #define BHDR(bh) ((struct ext4_xattr_header *)((bh)->b_data)) #define ENTRY(ptr) ((struct ext4_xattr_entry *)(ptr)) #define BFIRST(bh) ENTRY(BHDR(bh)+1) @@ -77,10 +97,11 @@ struct ext4_xattr_entry { #define EXT4_ZERO_XATTR_VALUE ((void *)-1) struct ext4_xattr_info { - int name_index; const char *name; const void *value; size_t value_len; + int name_index; + int in_inode; }; struct ext4_xattr_search { @@ -140,7 +161,13 @@ extern int ext4_xattr_get(struct inode *, int, const char *, void *, size_t); extern int ext4_xattr_set(struct inode *, int, const char *, const void *, size_t, int); extern int ext4_xattr_set_handle(handle_t *, struct inode *, int, const char *, const void *, size_t, int); -extern void ext4_xattr_delete_inode(handle_t *, struct inode *); +extern struct inode *ext4_xattr_inode_iget(struct inode *parent, unsigned long ea_ino, + int *err); +extern int ext4_xattr_inode_unlink(struct inode *inode, unsigned long ea_ino); +extern int ext4_xattr_delete_inode(handle_t *handle, struct inode *inode, + struct ext4_xattr_ino_array **array); +extern void ext4_xattr_inode_array_free(struct inode *inode, + struct ext4_xattr_ino_array *array); extern int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize, struct ext4_inode *raw_inode, handle_t *handle); |