diff options
Diffstat (limited to 'fs/ext4/xattr.h')
| -rw-r--r-- | fs/ext4/xattr.h | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h index 099c8b670ef5..0d2dde1fa87a 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 +69,13 @@ struct ext4_xattr_entry { EXT4_I(inode)->i_extra_isize)) #define IFIRST(hdr) ((struct ext4_xattr_entry *)((hdr)+1)) +/* + * 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 +84,11 @@ 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 { @@ -96,6 +104,11 @@ struct ext4_xattr_ibody_find { struct ext4_iloc iloc; }; +struct ext4_xattr_inode_array { + unsigned int count; /* # of used items in the array */ + struct inode *inodes[0]; +}; + extern const struct xattr_handler ext4_xattr_user_handler; extern const struct xattr_handler ext4_xattr_trusted_handler; extern const struct xattr_handler ext4_xattr_security_handler; @@ -139,8 +152,16 @@ extern ssize_t ext4_listxattr(struct dentry *, char *, size_t); 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 int ext4_xattr_set_credits(struct inode *inode, size_t value_len, + bool is_create, int *credits); +extern int __ext4_xattr_set_credits(struct super_block *sb, struct inode *inode, + struct buffer_head *block_bh, size_t value_len, + bool is_create); -extern void ext4_xattr_delete_inode(handle_t *, struct inode *); +extern int ext4_xattr_delete_inode(handle_t *handle, struct inode *inode, + struct ext4_xattr_inode_array **array, + int extra_credits); +extern void ext4_xattr_inode_array_free(struct ext4_xattr_inode_array *array); extern int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize, struct ext4_inode *raw_inode, handle_t *handle); @@ -169,3 +190,11 @@ static inline int ext4_init_security(handle_t *handle, struct inode *inode, return 0; } #endif + +#ifdef CONFIG_LOCKDEP +extern void ext4_xattr_inode_set_class(struct inode *ea_inode); +#else +static inline void ext4_xattr_inode_set_class(struct inode *ea_inode) { } +#endif + +extern int ext4_get_inode_usage(struct inode *inode, qsize_t *usage); |